Vibration-reducing structure for four-compression-chamber diaphragm pump
A vibration-reducing structure for compressing diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes four operating holes, a first curved vibration-reducing positioning structure circumferentially disposed around the upper side of each operating hole, and or a linked four-curve positioning structure that collectively extends around all of the operating holes. The diaphragm membrane includes four equivalent piston acting zones and second curved vibration-reducing position structures situated at positions corresponding to the positions of the first curved vibration-reducing positioning structures. The first positioning structures in the pump head body, which may be grooves, slots, perforations, or protrusions, mate with the corresponding second positioning structures in the diaphragm membrane to reduce the moment arm generated during pumping by movement of the diaphragm membrane, which may be protrusions, grooves, slots, or perforations, thereby generating less torque to decrease the strength of vibrations and vibration noise.
This application claims the benefit of provisional U.S. Patent Application No. 61/000,622, filed May 20, 2014, and incorporated herein by reference.
FIELD OF THE PRESENT INVENTIONThe present invention relates to a vibration-reducing structure for a four-compression-chamber diaphragm pump, and particularly to a structure that can reduce the vibration strength of the pump so that the annoying noise incurred by the consonant vibration with the housing of an RO purification system is eliminated when the vibration-reducing structure is installed on the water supplying apparatus in either a house, recreational vehicle, or mobile home.
BACKGROUND OF THE INVENTIONConventional compressing diaphragm pumps of the type used with a RO (Reverse Osmosis) purifier or RO water purification system, and which are popularly installed on the water supplying apparatus of houses, recreational vehicles or mobile homes, come in various types. Other than the specific type disclosed in U.S. Pat. No. 6,840,745, the majority of conventional four-compression-chamber diaphragm pumps can be categorized as similar in design to the one shown in
The motor upper chassis 30 includes a bearing 31 through which an output shaft 11 of the motor 10 extends. The motor upper chassis 30 also includes an upper annular rib ring 32 with several fastening bores 33 evenly and circumferentially disposed in a rim of the upper annular rib ring 32.
The wobble plate 40 includes a shaft coupling hole 41 through which the corresponding motor output shaft 11 of the motor 10 extends.
The eccentric roundel mount 50 includes a central bearing 51 at the bottom thereof for receiving the corresponding wobble plate 40. Four eccentric roundels 52 even and circumferentially disposed on the eccentric roundel mount 50. Each eccentric roundel 52 has a screw-threaded bore 54 and an annular positioning groove 55 formed in the top face thereof respectively.
The pump head body 60 covers the upper annular rib ring 32 of the motor upper chassis 30 to encompass the wobble plate 40 with integral protruding cam-lobed shaft and eccentric roundel mount 50 therein, and includes four operating holes 61 evenly and circumferentially disposed therein. Each operating hole 61 has an inner diameter that is slightly bigger than the outer diameter of each corresponding eccentric roundel 52 in the eccentric roundel mount 50 for receiving each corresponding eccentric roundel 52 respectively, a lower annular flange 62 formed thereunder for mating with corresponding upper annular rib ring 32 of the motor upper chassis 30, and several fastening bores 63 evenly disposed around a circumference of the pump head body 60.
The diaphragm membrane 70, which is extrusion-molded from a semi-rigid elastic material and placed on the pump head body 60, includes a pair of parallel rims, including outer raised rim 71 and inner raised rim 72, as well as four evenly spaced radial raised partition ribs 73. Each end of respective radial raised partition ribs 73 connect with the inner raised rim 72, thereby forming four equivalent piston acting zones 74 within the radial raised partition ribs 73, wherein each piston acting zone 74 has an acting zone hole 75 created therein in correspondence with a respective screw-threaded bore 54 in the screw-threaded bore 53 of the eccentric roundel mount 50, and an annular positioning protrusion 76 for each acting zone hole 75 is formed at the bottom side of the diaphragm membrane 70 (as shown in
Each pumping piston 80, which is respectively disposed in each corresponding piston acting zones 74 of the diaphragm membrane 70, has a tiered hole 81 extending therethrough. After each of the annular positioning protrusions 76 in the diaphragm membrane 70 has been inserted into each corresponding annular positioning groove 55 in the eccentric roundel 52 of the eccentric roundel mount 50, respective fastening screws 1 are inserted through the tiered hole 81 of each pumping piston 80 and the acting zone hole 75 of each corresponding piston acting zone 74 in the diaphragm membrane 70, so that the diaphragm membrane 70 and four pumping pistons 80 can be securely screwed into screw-threaded bores 54 of the corresponding four eccentric roundels 52 in the eccentric roundel mount 50 (as can be seen in the enlarged portion of
Piston valvular assembly 90, which suitably covers the diaphragm membrane 70, includes a downwardly extending raised rim 91 for insertion between the outer raised rim 71 and inner raised rim 72 of the diaphragm membrane 70, a central round outlet mount 92 having a central positioning bore 93 with four equivalent sectors, each of which contains a group of multiple evenly circumferentially-located outlet ports 95, a T-shaped plastic anti-backflow valve 94 with a central positioning shank, and four circumferentially-adjacent inlet mounts 96. Each of the inlet mounts 96 includes a group of multiple evenly circumferentially-located inlet ports 97 and an inverted central piston disk 98 respectively so that each piston disk 98 serves as a valve for each corresponding group of multiple inlet ports 97, wherein the central positioning shank of the plastic anti-backflow valve 94 mates with the central positioning bore 93 of the central outlet mount 92 and the group of multiple outlet ports 95 in the central round outlet mount 92 are communicable with the four inlet mounts 96. A hermetically-sealed preliminary-compression chamber 26 is formed in each inlet mount 96 and corresponding piston acting zone 74 in the diaphragm membrane 70 when downwardly extending rim 91 is inserted between the outer raised rim 71 and inner raised rim 72 of the diaphragm membrane 70, such that one end of each preliminary-compression chamber 26 is communicable with each corresponding group of multiple inlet ports 97 (as shown in the enlarged portion of
The pump head cover 20, which covers the pump head body 60 to encompass the piston valvular assembly 90, pumping piston 80 and diaphragm membrane 70 therein, includes a water inlet orifice 21, a water outlet orifice 22, and several fastening bores 23. A tiered rim 24 and an annular rib ring 25 are disposed in the bottom inside of the pump head cover 20 such that the outer rim for the assembly of diaphragm membrane 70 and piston valvular assembly 90 can be hermetically attached to the tiered rim 24 (as shown in the enlarged portion of
By running each fastening bolt 2 through each corresponding fastening bore 23 of pump head cover 20 and each corresponding fastening bore 63 in the pump head body 60, and then putting a nut 3 onto each fastening bolt 2 to securely screw the pump head cover 20 to the pump head body 60, the whole assembly of the four-compression-chamber diaphragm pump is finished (as shown in
Firstly, when the motor 10 is powered on, the wobble plate 40 is driven to rotate by the motor output shaft 11 so that the four eccentric roundels 52 on the eccentric roundel mount 50 sequentially and constantly move in an up-and-down reciprocal stroke.
Secondly, in the meantime, the four pumping pistons 80 and four piston acting zones 73 in the diaphragm membrane 70 are sequentially driven by the up-and-down reciprocal stroke of the four eccentric roundels 52 to move in an up-and-down displacement.
Thirdly, when the eccentric roundel 52 moves in a down stroke, causing pumping piston 80 and piston acting zone 74 to be displaced downwardly, the piston disk 98 in the piston valvular assembly 90 is pushed into an open status so that tap water W can flow into the preliminary-compression chamber 26 via water inlet orifice 21 in the pump head cover 20 and inlet ports 97 in the piston valvular assembly 90 (as indicated by the arrowhead extending from W in the enlarged view of
Fourthly, when the eccentric roundel 52 moves in an up stroke, causing pumping piston 80 and piston acting zone 74 to be displaced upwardly, the piston disk 96 in the piston valvular assembly 90 is pulled into a closed status to compress the tap water W in the preliminary-compression chamber 26 and increase the water pressure therein up to a range of 80 psi-100 psi. The resulting pressurized water Wp causes the plastic anti-backflow valve 94 in the piston valvular assembly 90 to be pushed to an open status.
Fifthly, when the plastic anti-backflow valve 94 in the piston valvular assembly 90 is pushed to an open status, the pressurized water Wp in the preliminary-compression chamber 26 is directed into high-compression chamber 27 via the group of outlet ports 95 for the corresponding sector in the central outlet mount 92, and then expelled out of the water outlet orifice 22 in the pump head cover 20 (as shown in
Finally, orderly iterative action for each group of outlet ports 95 for the four sectors in central outlet mount 92 causes the pressurized water Wp to be constantly discharged out of the conventional four-compression-chamber diaphragm pump to be further RO-filtered by the RO-cartridge so that the final filtered pressurized water Wp can be used in a reverse osmosis water purification system.
Referring to
To address the direct-vibration drawbacks of the conventional four-compression-chamber diaphragm pump, as shown in
In addition to the drawback of increasing overall vibration noise of the housing C, a further drawback occurs in that the water pipe P connected to the water outlet orifice 22 of the pump head cover 20 will synchronously shake in resonance with the primary vibration described above (as indicated by the broken-line depictions of water pipe P in
The additional drawbacks of overall resonant shaking and water leakage in the conventional four-compression-chamber diaphragm pump cannot be solved by the conventional way of addressing the foregoing primary vibration drawback. How to substantially reduce all the drawbacks associated with the operating vibration of the four-compression-chamber diaphragm pump has become an urgent and critical issue.
SUMMARY OF THE INVENTIONAn objective of the present invention is to provide a vibration-reducing structure for four-compressing-chamber diaphragm pump features of a pump head body and a diaphragm membrane, in which the pump head body includes four operating holes and at least one basic curved groove, slot, or perforated segment, or a curved protrusion or set of protrusions, circumferentially disposed around at least a portion of the upper side of each operating hole, and in which the diaphragm membrane includes four equivalent piston acting zones each of which has an acting zone hole, an annular positioning protrusion for each acting zone hole, and at least one basic curved protrusion or set of protrusions, or a groove, slot, or perforated segment, at least partially circumferentially disposed around each concentric annular positioning protrusion at a position corresponding to the position of each mating basic curved groove, slot, perforated segment, protrusions, or sets of protrusions in the pump head body, so that the four basic curved protrusions, sets of protrusions, grooves, slots, or perforated segments are completely inserted into or received by the corresponding four basic curved grooves, slots, perforated segments, protrusions, or sets of protrusions in the pump head body with a short length of moment arm to generate less torque, the torque being obtained by multiplying the length of the moment arm by a constant acting force. With less torque, the vibration strength of the compressing diaphragm pump is substantially reduced.
Another objective is to provide a vibration-reducing structure for four-compressing-chamber diaphragm pump features of a pump head body with at least four basic curved grooves, slots or perforated segments, or curved protrusions, and a diaphragm membrane with four basic curved protrusions, or curved grooves, slots, or perforated segments, such that the four basic curved protrusions, grooves, slots, or perforated segments are completely inserted into the corresponding four basic curved grooves, slots, perforated segments, or protrusions with a short length of moment arm that generates less torque, the torque being obtained by multiplying the length of the moment arm with a constant acting force. With less torque, the vibration strength of the compressing diaphragm pump is substantially reduced. By having the present invention installed on the housing of the reverse osmosis purification unit of a water supplying apparatus in either a house, recreational vehicle or mobile home, the housing being further cushioned by a conventional cushion base with a rubber shock absorber, the annoying noise caused by resonant shaking in the conventional compressing diaphragm pump can be completely eliminated.
A basic curved groove 65 is circumferentially disposed around a portion of the upper side of each operating hole 61 in the pump head body 60 while a basic curved protrusion 77 is circumferentially disposed around a portion of each concentric annular positioning protrusion 76 at the bottom side of the diaphragm membrane 70 at positions corresponding to the positions of the mating basic curved grooves 65 in the pump head body 60 (as shown in
A comparison of
Comparing the operation of the conventional four-compression-chamber diaphragm pump shown in
When the resultant torque is calculated by multiplying the same acting force F by the length of moment arm, the resultant torque of the present invention represented by the embodiment illustrated in
Because of the smaller resultant torque of the present invention, the related vibration strength is substantially reduced.
In a practical test of a prototype of the present invention, the vibration strength was reduced to less than one tenth (10%) of the vibration strength in the conventional four-compression-chamber diaphragm pump.
If the present invention is installed on the housing C of a reverse osmosis purification unit of a water supplying apparatus for a house, recreational vehicle or mobile home, such that it is also cushioned by a conventional cushion base 100 with a rubber shock absorber 102 (as shown in
As shown in
As shown in
Each basic curved protrusion 651 at the upper side of the pump head body 60 is completely inserted into each corresponding basic curved groove 771 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
Referring to
The four basic curved grooves 65 in the pump head body 60 shown in
The linked four-curve protrusion 79 at the bottom side of the diaphragm membrane 70 may be completely inserted into the corresponding linked four-curve groove 68 in the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
Alternatively, as shown in
Thereby, the linked four-curve protrusion 681 at the upper side of the pump head body 60 may be completely inserted into the linked four-curve groove 791 in the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
L3 from the linking four-curve groove 791 to the periphery of the annular positioning protrusion 76 in the diaphragm membrane 70 during operation of the present invention (as shown in
A second outer curved groove 66 is further circumferentially disposed around each basic curved groove 65 in the pump head body 60 (as shown in
Thereby, each pair of basic curved protrusion 77 and second outer curved protrusion 78 at the bottom side of the diaphragm membrane 70 is able to be completely inserted into each pair of corresponding basic curved groove 65 and second outer curved groove 66 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
Alternatively, as shown in
Thereby, each pair of basic curved protrusion 651 and second outer curved protrusion 661 at the upper side of the pump head body 60 is completely inserted into each corresponding pair of basic curved groove 771 and second outer curved groove 781 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
An integral annular groove 601 is circumferentially disposed around each said operating hole 61 in the pump head body 60 (as shown in
Each integral annular protrusion 701 at the bottom side of the diaphragm membrane 70 is completely inserted into each corresponding integral annular groove 601 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
thereby shortening a length of moment arm L2 from the integral annular protrusion 701 to the periphery of the annular positioning protrusion 76 in the diaphragm membrane 70 during operation of the present invention (as shown in
and consequently reducing vibration while enhancing the stability of the moment arm L2 against the acting force F on the eccentric roundel 52.
As shown in
Also, as shown in
Each integral annular protrusion 610 at the upper side of the pump head body 60 is completely inserted into each corresponding integral annular groove 710 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
A group of curved grooves 602 are circumferentially disposed around each operating hole 61 in the pump head body 60 (as shown in
Each group of curved protrusions 702 at the bottom side of the diaphragm membrane 70 is completely inserted into each corresponding group of curved dents 602 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
As shown in
Each group of curved protrusions 620 at the upper side of the pump head body 60 is completely inserted into each group of corresponding curved grooves 720 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
A group of round indents 603 are circumferentially disposed around each operating hole 61 in the pump head body 60 (as shown in
Each group of round protrusions 703 at the bottom side of the diaphragm membrane 70 is completely inserted into each corresponding group of round indents 603 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
As shown in
Each group of round protrusions 630 at the upper side of the pump head body 60 is completely inserted into each group of corresponding round indents 730 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
A group of square indents 604 are circumferentially disposed around each operating hole 61 in the pump head body 60 (as shown in
Each group of square protrusions 704 at the bottom side of the diaphragm membrane 70 is completely inserted into each corresponding group of square indents 604 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
As shown in
Each group of square protrusions 640 at the upper side of the pump head body 60 is completely inserted into each group of corresponding square indents 740 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
An integral annular groove 601 is circumferentially disposed around the upper side of each operating hole 61 and a linked four-curve indent 68 is disposed to encompass all four integral indented rings 601 in the pump head body 60 (as shown in
The linked four-curve protrusion 79 and four integral protruding rings 701 at the bottom side of the diaphragm membrane 70 are completely inserted into the corresponding linked four-curve indent 68 and four integral indented rings 601 at the upper side of the pump head body 60 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
As shown in
As shown in
The linking four-curve protrusion 681 and four integral protruding rings 610 at the upper side of the pump head body 60 are completely inserted into the corresponding linked four-curve indent 791 and four integral indented rings 710 at the bottom side of the diaphragm membrane 70 upon assembly of the pump head body 60 and the diaphragm membrane 70 (as shown in
Based on the foregoing disclosure, the present invention substantially achieves a vibration reducing effect in the four-compression-chamber diaphragm pump by means of simple newly devised pump head body 60 and diaphragm membrane 70 without increasing overall cost. The present invention surely resolves all issues of undesired noise and resonant shaking that result from vibrations in the conventional four-compression-chamber diaphragm pump, which has valuable industrial applicability.
Claims
1. A four-compression-chamber diaphragm pump with a vibration-reducing structure, wherein said four-compression-chamber diaphragm pump includes a motor, a pump head body fixed to a motor housing, a roundel mount situated on a lower side of the pump head body and four eccentric roundels that extend through four operating holes in the pump head body, a diaphragm membrane fixed to the eccentric roundels through the operating holes and situated on an upper side of the pump head body, and four pumping pistons arranged to be moved in a pumping action upon movement of the diaphragm membrane, wherein:
- the pump head body includes at least one first curved vibration-reducing positioning structure at each operating hole on the upper side of the pump head body,
- the diaphragm membrane includes at least one second curved positioning structure at a respective position on the diaphragm membrane that corresponds to a position of said at least one first vibration-reducing positioning structure on the pump head body, and
- the at least one first positioning structure mates with the corresponding at least one second positioning structure to reduce a moment arm generated during pumping by movement of the diaphragm membrane, thereby generating less torque during said movement to decrease a strength of vibrations and vibration noise.
2. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein said motor includes an output shaft, and said compressing diaphragm pump further includes a wobble plate with an integral protruding cam-lobed shaft and a piston valvular assembly, and wherein:
- said output shaft of said motor extends through a shaft coupling hole in said wobble plate to cause said wobble plate to rotate;
- said integral protruding cam-lobed shaft of said wobble plate extends through a central bearing of said eccentric roundel mount;
- said four eccentric roundels are evenly disposed around a circumference of the eccentric roundel mount, whereby rotation of said wobble plate causes sequential up-and-down movement of each of said eccentric roundels, each eccentric roundel having a top face, a positioning groove formed in the top face, and a fastening bore formed in the top face;
- said pump head body is secured to an upper chassis of the said motor to encompass the wobble plate and eccentric roundel mount therein, said four operating holes in said pump head body being disposed at locations corresponding to locations of said four eccentric roundels, each operating hole having an inner diameter slightly bigger than an outer diameter of a corresponding one of said eccentric roundels for respectively receiving the corresponding one of the eccentric roundels;
- said diaphragm membrane is made of a semi-rigid elastic material and placed on the pump head body, said diaphragm membrane including four annular raised rims extending from a bottom side of the diaphragm membrane to mate with the respective positioning grooves in the top face of the respective four eccentric roundels, as well as four evenly spaced radial raised partition ribs extending from a top side of the diaphragm membrane to form four equivalent piston acting zones, wherein each piston acting zone has an acting zone hole formed therein at a position corresponding to a position of a fastening bore in a respective one of the eccentric roundels;
- each pumping piston has a tiered hole and a fastening member extends through the tiered hole of each pumping piston, through the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, and into the respective fastening hole in a respective one of the eccentric roundels to secure the diaphragm membrane and each of the four pumping pistons to the corresponding four eccentric roundels in the eccentric roundel mount;
- said piston valvular assembly, which covers the diaphragm membrane and is peripherally secured to the diaphragm membrane by sealing engagement, includes a central outlet mount having a central positioning bore and four equivalent sectors, each of which contains multiple evenly circumferentially-located outlet ports, a T-shaped plastic anti-backflow valve with a central positioning shank, and four circumferential inlet mounts, each of the four circumferential inlet mounts including multiple evenly circumferentially-located inlet ports and an inverted central piston disk mounted to the respective inlet mount so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein the central positioning shank of the plastic anti-backflow valve mates with the central positioning bore of the central outlet mount such that said multiple outlet ports in the central round outlet mount communicate with the four circumferential inlet mounts, and a hermetic preliminary water-pressurizing chamber is formed in each inlet mount and corresponding piston acting zone in the diaphragm membrane upon the diaphragm membrane being peripherally secured to the piston valvular assembly such that one end of each of the preliminary water-pressuring chamber is communicable with each corresponding one of said inlet ports;
- said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, and a water outlet orifice, said pump head cover being hermetically attached to the assembly of diaphragm membrane and piston valvular assembly, wherein a high-pressured water chamber is configured between a cavity formed by an inside wall of an annular rib ring and the central outlet mount of the piston valvular assembly;
- said at least one first positioning structure includes at least one of a basic curved groove, curved slot, curved set of openings, curved protrusion, and curved set of protrusions, each said first positioning structure being circumferentially-disposed around an upper side of each of the four operating holes in the pump head body or linked to extend collectively around an upper side of all of the operating holes; and
- said at least one second vibration-reducing positioning structure includes one of a basic curved protrusion, curved set of protrusions, curved groove, curved slot, and curved set of openings, each said at least one second positioning structure being circumferentially-disposed around each of the four annular raised rims at the bottom side of the diaphragm membrane at a position corresponding to a position of each first positioning structure in the pump head body so that each second positioning structure at the bottom side of the diaphragm membrane is mated with each corresponding first positioning structure at the upper side of the pump head body upon assembly of the pump head body and the diaphragm membrane, whereby the moment arm generated by movement of the diaphragm membrane in response to up-and-down movement of the pistons extends between the first vibration-reducing structures and a periphery of the second vibration-reducing structures to thereby reduce vibrations resulting from said movement of the diaphragm.
3. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a curved groove or slot in the pump head body and each said second vibration-reducing positioning structure is a curved protrusion extending from the diaphragm membrane.
4. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 3, wherein each said first vibration-reducing positioning structure includes a second curved groove or slot circumferentially disposed around the first groove or slot in the pump head body and each said second vibration-reducing positioning structure includes a second curved protrusion circumferentially disposed around the first curved protrusion extending from the diaphragm membrane.
5. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a curved protrusion extending from the pump head body and each said second vibration-reducing positioning structure is a curved groove or slot extending from the diaphragm membrane.
6. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 5, wherein each said first vibration-reducing positioning structure includes a second curved protrusion circumferentially disposed around the first curved protrusion extending from the pump head body and each said second vibration-reducing positioning structure includes a second curved groove or slot circumferentially disposed around the first curved groove or slot in the diaphragm membrane.
7. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein said first vibration-reducing positioning structures are combined to form a linked four-curve groove or slot in the pump head body and said second vibration-reducing positioning structures are combined to form a linked four-curve protrusion extending from the diaphragm membrane.
8. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein said first vibration-reducing positioning structures are combined to form a linked four-curve protrusion extending from the pump head body and said second vibration-reducing positioning structures are combined to form a linked four-curve groove or slot in the diaphragm membrane.
9. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure includes an annular groove or perforated ring in the pump head body and each said second vibration-reducing positioning structure includes a curved protrusion or set of protrusions extending from the diaphragm membrane.
10. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 9, wherein said first vibration-reducing positioning structure further includes a linked four-curve protrusion extending from the pump head body and around all four of said operating holes and corresponding annular grooves or perforated rings, and wherein said second vibration-reducing positioning structure further includes a linked four-curve groove or slot in the diaphragm membrane that extends around all four of said raised rims and curved protrusions or sets of protrusions extending from the diaphragm membrane.
11. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure includes a curved protrusion or set of protrusions extending from the pump head body and each said second vibration-reducing positioning structure includes an annular groove or perforated ring in the diaphragm membrane.
12. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 11, wherein said first vibration-reducing positioning structure further includes a linked four-curve protrusion extending from the pump head body and around all four of said raised rims and corresponding curved protrusions or sets of protrusions, and wherein said second vibration-reducing positioning structure further includes a linked four-curve groove or slot in the diaphragm membrane that extends around all four of said operating holes and annular grooves or perforated rings in the diaphragm membrane.
13. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of curved grooves or slots in the pump head body and each said second vibration-reducing positioning structure is a set of curved protrusions extending from the diaphragm membrane.
14. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of curved protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of curved grooves or slots in the diaphragm membrane.
15. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of round indents or holes in the pump head body and each said second vibration-reducing positioning structure is a set of round protrusions extending from the diaphragm membrane.
16. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of round protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of round indents or holes in the diaphragm membrane.
17. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of square indents or holes in the pump head body and each said second vibration-reducing positioning structure is a set of square protrusions extending from the diaphragm membrane.
18. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein each said first vibration-reducing positioning structure is a set of square protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of square indents or holes in the diaphragm membrane.
19. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein said diaphragm membrane includes an inner raised rim and a parallel outer raised rim extending from a top of said diaphragm membrane, said piston valvular assembly includes a downwardly extending raised rim, and said to downwardly extending raised rim of said piston valvular assembly extends between said inner and outer raised rims of said diaphragm membrane to provide a peripheral seal when said diaphragm membrane is peripherally secured to said piston valvular assembly.
20. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein said fastening bores in said eccentric roundels are threaded bores and said fastening members are screws.
21. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 2, wherein said cavity is formed by a bottom of an annular rib ring of the pump head cover being pressed onto a rim of the central outlet mount of the piston valvular assembly.
22. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a curved groove or slot in the pump head body and each said second vibration-reducing positioning structure is a curved protrusion extending from the diaphragm membrane.
23. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 22, wherein each said first vibration-reducing positioning structure includes a second curved groove or slot circumferentially disposed around the first groove or slot in the pump head body and each said second vibration-reducing positioning structure includes a second curved protrusion circumferentially disposed around the first curved protrusion extending from the diaphragm membrane.
24. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a curved protrusion extending from the pump head body and each said second vibration-reducing positioning structure is a curved groove or slot extending from the diaphragm membrane.
25. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 24, wherein each said first vibration-reducing positioning structure includes a second curved protrusion circumferentially disposed around the first curved protrusion extending from the pump head body and each said second vibration-reducing positioning structure includes a second curved groove or slot circumferentially disposed around the first curved groove or slot in the diaphragm membrane.
26. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein said first vibration-reducing positioning structures are combined to form a linked four-curve groove or slot in the pump head body and said second vibration-reducing positioning structures are combined to form a linked four-curve protrusion extending from the diaphragm membrane.
27. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein said first vibration-reducing positioning structures are combined to form a linked four-curve protrusion extending from the pump head body and said second vibration-reducing positioning structures are combined to form a linked four-curve groove or slot in the diaphragm membrane.
28. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure includes an annular groove or perforated ring in the pump head body and each said second vibration-reducing positioning structure includes a curved protrusion or set of protrusions extending from the diaphragm membrane.
29. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 28, wherein said first vibration-reducing positioning structure further includes a linked four-curve protrusion extending from the pump head body and around all four of said operating holes and corresponding annular grooves or perforated rings, and wherein said second vibration-reducing positioning structure further includes a linked four-curve groove or slot in the diaphragm membrane that extends around all four of said curved protrusions or sets of protrusions extending from the diaphragm membrane.
30. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure includes a curved protrusion or set of protrusions extending from the pump head body and each said second vibration-reducing positioning structure includes an annular groove or perforated ring in the diaphragm membrane.
31. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 30, wherein said first vibration-reducing positioning structure further includes a linked four-curve protrusion extending from the pump head body and around all four of said operating holes and corresponding curved protrusions or sets of protrusions, and wherein said second vibration-reducing positioning structure further includes a linked four-curve groove or slot in the diaphragm membrane that extends around all four of said annular grooves or perforated rings in the diaphragm membrane.
32. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of curved grooves or slots in the pump head body and each said second vibration-reducing positioning structure is a set of curved protrusions extending from the diaphragm membrane.
33. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of curved protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of curved grooves or slots in the diaphragm membrane.
34. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of round indents or holes in the pump head body and each said second vibration-reducing positioning structure is a set of round protrusions extending from the diaphragm membrane.
35. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of round protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of round indents or holes in the diaphragm membrane.
36. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of square indents or holes in the pump head body and each said second vibration-reducing positioning structure is a set of square protrusions extending from the diaphragm membrane.
37. A four-compression-chamber diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein each said first vibration-reducing positioning structure is a set of square protrusions extending from the pump head body and each said second vibration-reducing positioning structure is a set of square indents or holes in the diaphragm membrane.
38. The compressing diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein said motor is a brushed motor.
39. The compressing diaphragm pump with a vibration-reducing structure as claimed in claim 1, wherein said motor is a brushless motor.
Type: Application
Filed: Apr 29, 2015
Publication Date: Nov 26, 2015
Inventors: Ying Lin Cai (Guangdong), Chao Fou Hsu (Kaohsiung City)
Application Number: 14/699,101