Range Hood

Abstract

The present invention provides a range hood comprising a casing, a partition plate, a motor, a fan, a protective net, a filter screen, a fixation holder and a screen cover, characterized in that said fixation holder configured under said filter screen has one end pivotally connected with a hollow joint of said partition plate inside the bottom portion of said casing, the other end clasped with a resilient hooked plate of said partition plate, and a middle section holding said filter screen. Therefore, the present invention provides a function that said filter screen may be secured and replaced not only easily but also quickly.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a range hood, more specifically, to a range hood that provides a filter screen which may not only be secured easily but also be replaced quickly.

2. Description of the Prior Art

The A range hood is a sort of kitchen equipment for removing airborne grease, combustion products, fumes, steam and odors produced from indoor cooking. A prior art range hood generally contains a casing, at least one motor, at least one fan and a protective net; wherein said motor is configured inside the casing, and the drive axle of said motor is connected with the center of said fan to drive said fan to rotate so that said fan may axially suck fumes, and then, by the centrifugal force, the fumes may be exhausted; wherein said protective net is arranged under the fume inlet so as to prevent the users from stretching their hands into the fan to keep safe. When in use, said fan may rotate at high speed to produce suction force so as to upwards extract the fumes thereunder, and thus the fumes may be removed through the fume outlet. In order to increase the fume-exhaust filtering efficiency, certain of prior art range hoods are provided with an activated carbon filter screen for filtering and purifying fumes; wherein the activated carbon filter screen is arranged under the aforesaid protective net, so that the fumes may be exhausted through the aforementioned filter screen which may absorb and purify the fumes; thus, the fumes may even exhaust indoors instead of being removed outside after being filtered and purified.

However, said prior art range hoods have certain drawbacks described as follows: it is not convenient for the users to change; when said prior art activated carbon filter screen needs to be replaced, it cannot be detached without tools; moreover, said casing easily gathers oil stains so that the users may get their hands dirty with oil stains when the activated carbon filter screen is replaced. Thus, replacing said prior art activated carbon filter screen becomes not only inconvenient but also time consuming. It is against the background and the drawbacks associated therewith that the present invention has been developed.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a range hood provided with a filter screen that may not only be secured easily but also be replaced quickly.

In order to achieve the aforementioned objective, the present invention characterized in that said fixation holder configured under said filter screen has one end pivotally connected with a hollow joint of said partition plate inside the bottom portion of said casing, the other end clasped with a resilient hooked plate of said partition plate, and a middle section holding said filter screen. Therefore, the present invention provides a function that said filter screen may be secured and replaced not only easily but also quickly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order that the present invention may be more fully understood, a preferred embodiment thereof will now be described with reference to the accompanying drawings, in which:

FIG. 1 is a stereogram of the range hood according to the preferred embodiment of the present invention.

FIG. 2 is a stereogram showing the range hood viewed from another angle according to the preferred embodiment of the present invention.

FIG. 3 is a breakdown drawing of the range hood according to the preferred embodiment of the present invention.

FIG. 4 is an upward view of the combination that the fixation holder holds the filter screen according to the preferred embodiment of the present invention.

FIG. 4a is a sectional view of 4a-4a shown in FIG. 4.

FIG. 4b is a sectional view of 4b-4b shown in FIG. 4.

FIG. 5 is a sectional view of 5s-5s shown in FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The means for achieving the aforesaid objective and the functions of the present invention will become apparent from the following description, taken in connection with the accompanying drawings, wherein a preferred embodiment of the present invention is disclosed.

Referring to FIGS. 1 to 3, the range hood disclosed in the present invention comprises as follows:

A casing 1 has a concave hollow bottom portion of which the interior is arranged with a partition plate 2 to form a hollow chamber 10. The top surface of said casing 1 and the back plate la of said casing 1 are respectively provided with a fume outlet 11 connecting said chamber 10. Said outlet 11 may be opened or closed according to the work area where the range hood is mounted and the needs of the users. However, one of said fume outlets 11 must keep open. The bottom surface of said partition plate 2 is provided with a fume inlet 20.

A motor 3, of which the top surface is fixed to the aforementioned casing 1, is provided with a drive axle 30 secured to the center of a fan 4; said fan 4 is configured inside the aforementioned chamber 10 and has a bottom end corresponding to said fume inlet 20. When rotating, said fan 4 may axially suck fumes into said chamber 10, and then, by the centrifugal force, the fumes may be exhausted through said fume outlet 11.

A protective net 5 arranged under said fume inlet 20, is provided with an outer margin fastened to the bottom surface of said partition plate 2.

A filter screen 6, which is an activated carbon filter screen for absorbing, filtering and purifying fumes, is arranged under said protective net 5.

A fixation holder 7, fashioned into the shape of a trapezoid and configured under said filter screen 6, provides a bottom base 70 which has two sides respectively disposed with a pivot pin 71 protruding outward so as to be pivotally connected with a hollow joint 21 of said partition plate 2; wherein, said hollow joint 21 and the body of said partition plate 2 are formed in an integral stamping mode. Moreover, said fixation holder 7 is also provided with a top base 72 clasped with a resilient hooked plate 22 of said partition plate 2. Said resilient hooked plate 22, having a curved shape, is formed with the body of said partition plate 2 in an integral stamping mode. Wherein, the back of said resilient hooked plate 22 is arranged toward said joint 21. The middle section 73 of said fixation holder 7 may hold said filter screen 6.

A screen cover 8, configured under said filter screen 6, as shown in FIG. 5, has one end placed onto a folded lip lb of the bottom margin of said the back plate 1a; wherein said folded lip 1b is flat folded toward the inner side of the casing 1. Moreover, the other end of said screen cover 8 is arranged with a retractable pin 80 allowed to extend outwards to be inserted into a hole of said casing 1 so that said screen cover 8 may be secured to said casing 1. Wherein, said retractable pin 80 is controlled by a hand-pull plate 81 to be able to withdraw inwards so as to be unfastened.

Referring to FIG. 2, FIG. 4 and FIG. 5, the range hood disclosed in the present invention includes the aforementioned members. When the range hood is in use, said fan 4 may rotate at high speed to produce suction force so as to upwards extract the fumes thereunder. The fumes may pass said screen cover 8 and said filter screen 6 so as to allow the fumes to be absorbed, filtered and purified; the filtered and purified fumes may enter the chamber 10 through said protective net 5 and said fume inlet 20, and then the fumes may be removed through said fume outlet 11. Said fume outlets 11 may be opened or closed according to the work area where the range hood is mounted and the needs of the users. If the filtered fumes are exhausted indoors, a fume filter arrangement may be configured at said fume outlet 11 to increase the filtering efficiency.

When said filter screen 6 needs to be replaced, the user may pull said top base 72 of said fixation holder 7 outward to enable said top base 72 to detach from the resilient hooked plate 22 of said partition plate 2 so as to allow said middle section 73 of said fixation holder 7 to release said filter screen 6, and thus the user may take down said filter screen 6 and replace it with a new filter screen; next, the user may turn said top base 72 of said fixation holder 7 to clasp said resilient hooked plate 22 of said partition plate 2 so as to fix the new filter screen 6. Therefore, the present invention provides a function that said filter screen 6 may be secured and replaced not only easily but also quickly.

Moreover, the bottom surface of the partition plate 2 disposed in a range hood may be arranged with two or more than two fume inlets 20. As mentioned above, a protective net 5, a filter screen 6, a fixation holder 7, and a screen cover 8 may be arranged in sequence under each of said fume inlets 20. The structures of said members and the assembling mode thereof are also the same as the mentioned above.

It will be appreciated by those skilled in the art that variations and modifications to the invention described herein will be apparent without departing from the spirit and scope thereof. The variations and modifications as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of the invention as herein set forth.

Claims

1. A range hood comprising:

a casing having a bottom portion arranged with a partition plate partitioning off the interior of said casing as a hollow chamber, and a top surface arranged with at least one fume outlet connecting said chamber, wherein said partition plate is provided with a fume inlet corresponding to said chamber;

a motor having a top surface fixed to said casing provided with a drive axle secured to the center of a fan, and wherein said fan is configured inside said chamber and corresponds to said fume inlet;

a protective net which is arranged under said fume inlet and which is provided with an outer margin fastened to the bottom surface of said partition plate;

a filter screen arranged under said protective net for absorbing, filtering and purifying fumes;

a fixation holder configured under said filter screen, having one end pivotally connected with a joint of said partition plate, the other end clasped with a resilient hooked plate of said partition plate, and a middle section holding said filter screen; and

a screen cover configured under said filter screen having two ends respectively secured to said casing.

2. The range hood as claimed in claim 1, wherein said fixation holder is in the shape of a trapezoid provided with a bottom base having two sides respectively disposed with a pivot pin protruding outward for inserting into said hollow joint of said partition plate so as to enable the both to be pivotally connected with each other, and a top base clasped with a resilient hooked plate of said partition plate; wherein said resilient hooked plate has a curved shape and the back thereof is arranged toward said joint.

3. The range hood as claimed in claim 2, wherein said hollow joint and said resilient hooked plate are formed with the body of said partition plate in an integral stamping mode

4. The range hood as claimed in claim 3, wherein said filter screen is an activated carbon filter screen.

5. The range hood as claimed in claim 4, wherein a back plate arranged to said casing may also be disposed with said fume outlet; wherein said fume outlets configured to said back plate and the top surface of said casing may be opened or closed according to the work area where the range hood is mounted and the needs of the users.

6. The range hood as claimed in claim 5, wherein a fume filter arrangement may be configured at said fume outlet to increase the filtering efficiency if the filtered fumes are exhausted indoors.

7. The range hood as claimed in claim 2, wherein said screen cover has one end placed onto a folded lip of the bottom margin of said the back plate, and the other end arranged with a retractable pin allowed to extend outwards to be inserted into a hole of said casing so as to be secured to said casing; wherein said folded lip is flat folded toward the inner side of the casing, and moreover said retractable pin is controlled by a hand-pull plate to be able to withdraw inwards so as to be unfastened.