Abstract: A pneumatic tire has a tread portion provided with two crown main groove and two shoulder main grooves and divided into a center land zone, two middle land zones and two shoulder land zones. The middle land zone is provided with middle auxiliary grooves. The shoulder land zone is provided with shoulder axial grooves. The width of the shoulder axial groove at the axially outer end is more than the width of the shoulder axial groove at the axially inner end. Through the shoulder main groove, the shoulder axial grooves are continued to the respective middle auxiliary grooves.

Abstract: A tyre for a vehicle wheel includes a tread band. The tread band includes a pattern, including at least two circumferential portions, an elongated ridge, and at least two shoulder blocks. The at least two circumferential portions are disposed in axial side-by-side relationship. At least one of the circumferential portions includes a first geometric module repeated along a circumferential extension direction of the tyre. The elongated ridge is bounded by two grooves oblique to the circumferential extension direction and is divided into a plurality of intermediate blocks with respect to an axial extension direction of the tread band. The intermediate blocks are bounded by a plurality of cuts substantially transverse to the elongated ridge. The at least two shoulder blocks are associated with the elongated ridge, are circumferentially aligned along a side edge of the tread band, and are bounded by grooves oriented substantially transversely to the circumferential extension direction.

Abstract: A motorcycle tire having a block pattern suitable for running on rough terrain is disclosed. Each middle block overlaps with one of crown blocks at least partially in the tire circumferential direction. The top face of each crown block has an axially long rectangular shape. The top face of each middle block has a substantially pentagonal shape having five sides which are an axially inner side extending in the tire circumferential direction, a pair of transverse sides inclined so that the circumferential distance therebetween is gradually increased, and a pair of axially outer sides inclined so that the circumferential distance therebetween is gradually decreased. In a ground contacting patch of the tire in its normally inflated loaded condition and at the camber angle of zero, only an axially inner part of the top face of each middle block contacts with the ground.

Abstract: A pneumatic radial tire for a passenger vehicle according to the present invention has an appropriate relationship between a tire cross-sectional width SW and a tire outer diameter OD. Also, a method of using the pneumatic radial tire for a passenger vehicle according to the present invention is to use the above radial tire with at least specified internal pressure.

Abstract: A cushioning device including a layer of styrenic based gel material having top and bottom surfaces, a first layer including: i. layer of maleic anhydride and ii. layer of thermoplastic polyurethane, wherein the first layer has a surface bonded to the top surface of the layer of styrenic based gel material, the second layer has a surface bonded to the bottom of the layer of styrenic based gel material and wherein a pressure sensitive adhesive coating is disposed on at least one of the first and second layers opposite to the layer of styrenic based gel material.

Abstract: This invention relates to a method and a device for temporary bonding of a first substrate with a second substrate. The device is comprised of a mounting apparatus for mounting of the first substrate on a mounting contour with an active mounting surface. The mounting apparatus has an outer ring section for controllable fixing of the first substrate. Deformation means are provided for controllable deformation of the first substrate. The deformation means act within the outer ring section. Bonding means are provided for bonding of the first substrate with the second substrate.

Abstract: The present application relates to a film having a polyester layer comprising a blend of amorphous polyester and a copolymer of an olefin and a hydrocarbon ester of an acrylic acid, wherein the amount of copolymer is at least 30 parts per 100 parts by weight of amorphous polyester and wherein the polyester layer exhibits an E-modulus at 23 C of at least 200 N/mm2?. The application further discloses a method of making graphic with the film, in particular by ink jet printing and further discloses a method of applying the graphic to a substrate such as a building or a vehicle.

Abstract: The invention relates to a connection arrangement (30b) for connecting two profiled elements (32, 34) in a seamless and aerodynamically smooth manner in order to form a profiled surface around which a laminar flow is possible. A first profiled element (32) has a first fixing strip that extends towards the second profiled element (34), and the surface (44) of the first fixing strip is lower than the surfaces of the profiled elements (32, 34) in the outward direction. Furthermore, the second profiled element (34) has a second fixing strip (44) which is molded on the inside and which is arranged below the first fixing strip (36), and the two profiled elements (32, 34) are rigidly connected to each other by means of the second fixing strip. A filler region that can be found below the connecting surface (55) between the profiled surfaces (32, 34) and above the fixing strip surface (44) is tilled with at least two layers of cured filling material.

Abstract: A yarn or thread may include a plurality of substantially aligned filaments, with at least ninety-five percent of a material of the filaments being a thermoplastic polymer material. Various woven textiles and knitted textiles may be formed from the yarn or thread. The woven textiles or knitted textiles may be thermal bonded to other elements to form seams. A strand that is at least partially formed from a thermoplastic polymer material may extend through the seam, and the strand may be thermal bonded at the seam. The woven textiles or knitted textiles may be shaped or molded, incorporated into products, and recycled to form other products.

Abstract: The present invention is a spool-less, continuous bobbin assembly and a method of use for forming a stitch in a stitching surface. The spool-less, continuous bobbin assembly is generally comprised of a needle assembly for an upper thread, a looping assembly for the upper thread and an application assembly to deposit a lower thread material onto a stitching surface.

Abstract: A method includes the following steps. A carbon nanotube array is provided. An original carbon nanotube film is drawn from the carbon nanotube array and suspended. The original carbon nanotube film includes a plurality of carbon nanotubes substantially oriented along a first direction. The suspended original carbon nanotube film is soaked with an atomized organic solvent to form a carbon nanotube film. A support film is provided. The carbon nanotube film is attached to the support film. Wherein, the atomized organic solvent comprises a plurality of organic droplets separated from each other with diameters of larger than or equal to 10 micrometers, and less than or equal to 100 micrometers.

Abstract: The subject application discloses a fabrication method for a solar cell assembly, comprising the following steps: placing a plurality of solar cell sheets, which are connected to each other with connecting sheets, into an injection mold having a plurality of casting molds such that said plurality of solar cell sheets are respectively situated in said plurality of casting molds; injecting an injection molding material into said plurality of casting molds under a heating condition such that said solar cell sheets are encapsulated in said injection molding material, wherein said injection molding material is selected from a group consisting of ethylene-vinyl acetate, polysilicone and polyvinyl butyral; taking the encapsulated plurality of solar cell sheets out of said injection mold; and attaching a substrate and a back sheet respectively to two sides of said encapsulated plurality of solar cell sheets.

Abstract: An image display device is manufactured by: applying a liquid photo-curable resin composition having a total value of cure shrinkage ratios based on pre-curing and complete curing of 3% or more to a surface of the light-transmitting cover member or a surface of the image display member with a thickness greater than that of the light-shielding layer to cancel the step between the light-shielding layer and the light-shielding layer forming surface of the light-transmitting cover member; pre-curing the photo-curable resin composition with the irradiation of ultraviolet rays to form a pre-cured resin layer; bonding the light-transmitting cover member to the image display member such that the pre-cured resin layer is placed inside; and subjecting the pre-cured resin layer to the irradiation of ultraviolet rays to achieve the complete curing thereof. The pre-curing is conducted to obtain a cure shrinkage ratio less than 3% in the complete curing thereof.

Abstract: The present disclosure concerns embodiments of implantable prosthetic devices, and in particular, implantable prosthetic valves, and methods for making such devices. In one aspect, a prosthetic device includes encapsulating layers that extend over a fabric layer and secure the fabric layer to another component of the device. In particular embodiments, the prosthetic device comprises a prosthetic heart valve, and can be configured to be implanted in any of the native heart valves. In addition, the prosthetic heart valve can be, for example, a transcatheter heart valve, a surgical heart valve, or a minimally-invasive heart valve.

Abstract: A method and apparatus for cleaning a substrate after chemical mechanical planarizing (CMP) is provided. The apparatus comprises a housing, a substrate holder rotatable on a first axis and configured to retain a substrate in a substantially vertical orientation, a first pad holder having a pad retaining surface facing the substrate holder in a parallel and spaced apart relation, the first pad holder rotatable on a second axis disposed parallel to the first axis, a first actuator operable to move the pad holder relative to the substrate holder to change a distance between the first axis and the second axis, and a second pad holder disposed in the housing, the second pad holder having a pad retaining surface facing the substrate holder in a parallel and spaced apart relation, the second pad holder rotatable on a third axis parallel to the first axis and the second axis.

Abstract: A vacuum processing apparatus for processing a workpiece under vacuum. The vacuum processing apparatus includes a housing having a first vacuum chamber for processing the workpiece and a second vacuum chamber partitioned from the first vacuum chamber by a partition wall and communicating with the first vacuum chamber through a communication opening formed in the partition wall, a shutter for closing the communication opening of the partition wall, a gate for closing a workpiece load/unload opening communicating with the second vacuum chamber, a workpiece holding unit provided in the first vacuum chamber for holding the workpiece, a processing unit for processing the workpiece held by the workpiece holding unit, a first evacuating unit for evacuating the first vacuum chamber, and a second evacuating unit for evacuating the second vacuum chamber.

Abstract: A drive device is provided to include: a case; a first motor and a second motor having an output shaft extending along a first axial line in the case and a second axial line parallel to the first axial line in the case, respectively; a first output shaft including a first shaft body and roller followers, the roller followers being engaged at a predetermined reduction gear ratio with the rib of the first motor; a second output shaft including a second shaft body and roller followers, the roller followers being engaged at a predetermined reduction gear ratio with the rib of the second motor; a first sealing member located between the case and the outer peripheral surface of the first shaft body; and a second sealing member located between an inner peripheral surface of the first shaft body and an outer peripheral surface of the second shaft body.

Abstract: Substrate processing chamber components for use in substrate processing chambers are provided herein. In some embodiments, a substrate processing chamber component may include a body having a first surface, one or more heat exchangers disposed within the body below the first surface, and one or more anisotropic layers, wherein a separate anisotropic layer is disposed between each of the one or more heat exchangers and the first surface.

Abstract: A plasma equipment includes a chamber, a shower head disposed in an upper part of an inner space of the chamber for discharging a cleaning gas into the chamber, a plasma generator for generating a plasma gas from the cleaning gas, a lower electrode disposed in a lower part of the inner space of the chamber, a chuck covering the lower electrode, and a field inducing unit disposed outside the chamber for inducing an electric field or a magnetic field within the chamber in a direction parallel to top surfaces of the chuck and the lower electrode. The field inducing unit concentrates the plasma gas on an inner sidewall of the chamber and protects the chuck from the plasma gas.

Abstract: Methods and apparatus for plasma-enhanced substrate processing are provided herein. In some embodiments, an apparatus for processing a substrate includes: a process chamber having an internal processing volume disposed beneath a dielectric lid of the process chamber; a substrate support disposed in the process chamber; one or more inductive coils disposed above the dielectric lid to inductively couple RF energy into the processing volume above the substrate support; and one or more first electromagnets to form a first static magnetic field that is substantially vertical in direction and axisymmetric about a central processing axis of the process chamber, and having a magnitude of about 2 to about 10 gauss within the processing volume proximate the lid.

Abstract: A mounting table includes a base member, having a rear surface and a front surface facing the rear surface, in which a coolant path is formed, a groove portion having a bottom surface within the base member being annularly formed on the front surface, the base member being divided into a cylindrical inner base member portion positioned at an inner side of the groove portion and an annular outer base member portion positioned at an outer side of the groove portion by the groove portion; an annular focus ring supported by the outer base member portion, the annular focus ring having, at an inner side surface thereof, a protrusion that is protruded radially and inwardly to cover the groove portion; a first heat transfer member provided between the mounting surface and the coolant path; and a second heat transfer member provided between the focus ring and the coolant path.

Abstract: The present invention includes: a label opening unit, which preliminarily opens a tubular label folded in a sheet; a label expansion unit, which expands the preliminarily opened label; a bottle lifting unit having a mounting, on which the bottle is mounted and which can rise and fall; and a bottle pull-up unit, which lifts the bottle while holding with the bottle an upper end portion of the label attached to the bottle. After the bottle lifting unit has lifted the mounting on which the bottle is mounted, thereby inserting the bottle into the label expanded by the label expansion unit, the bottle pull-up unit pulls up the bottle, thereby removing expansion claws from the label and moving the bottle to above clamp members of the label opening unit.

Abstract: The invention relates to a vacuum drum for receiving a labelling material web that is operatively coupled with means for cutting the labelling material we into portions, applying an adhesive on the cut portions of labelling material and for transferring the glued portions to respective items to be labelled. The vacuum drum has a lateral surface having at least one section adapted to cooperate with the portions and delimited, at opposite angular ends, by respective front and back dumping pads. The lateral surface section having one or more panels defining a quasi-cylindrical surface; the front damping pad. and the at least one panel having a material such that the adhesion of the adhesive to the labelling material is greater than the adhesion of the adhesive to the material, and the cohesion of the adhesive being also greater than the adhesion of the adhesive to the material.

Abstract: A compliant bipolar micro device transfer head array and method of forming a compliant bipolar micro device transfer array from an SOI substrate are described. In an embodiment, a compliant bipolar micro device transfer head array includes a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include first and second silicon interconnects, and first and second arrays of silicon electrodes electrically connected with the first and second silicon interconnects and deflectable into one or more cavities between the base substrate and the silicon electrodes.

Abstract: A labeling machine, particularly of the reel-fed type, includes a framework (2) which supports an application element (10) provided with at least one rotating member (11) adapted to transfer the individual labels on corresponding containers moved by a conveyance element (50); the application assembly is fed by a driving element (20) which unwinds the ribbon of the labels from a reel which is supported by a rotatable support (31) mounted on at least one reel supporting assembly (30). The labeling machine includes an articulation element (100) in order to move reversibly the reel supporting assembly from a working position, in which the rotation axis (3000) of the rotatable support is substantially parallel to the rotation axis (1000) of the rotating member, to a loading position, in which the rotation axis of the rotatable support is transverse to the rotation axis of the rotating member.

Abstract: In a detaching apparatus, a detachment starter bends one end part of a first plate-like body into a cylindrical or prismatic surface in a direction opposite to a second plate-like body, thereby forming a single and straight boundary line between an adhering region and a detached region. A separator increases a distance between a first holder holding the first plate-like body and a second holder holding the second plate-like body to separate the first and second plate-like bodies.

Abstract: A method of preparing a tire for mounting includes providing a tire having a central axis and at least two bead portions, including a first bead portion and a second bead portion. The method also includes providing a plurality of members and moving the plurality of members outward until each of the plurality of members engages the first bead portion of the tire and causes the first bead portion to deflect outwards at a plurality of locations. The method further includes rotating at least one of the tire and the plurality of members about the central axis of the tire while the plurality of members engages the first bead portion of the tire.

Abstract: A programmable wheel and tire assembly machine and method of assembly is disclosed which compensates for different wheel and tire combinations, as well as dynamically manipulates the present arms during the mounting process. An upper present arm is supported in a manner to provide at least two axes of movement, the upper present arms capable of independent manipulation along/about each axis. A lower present arm is supported in a manner to provide at least one axis of movement, the lower present arm capable of manipulation in a horizontal plane. Wheel and tire data is collected and used to generate a mounting protocol for individual tire & wheel combination. Continuous position feedback of the present arms may be employed to further control movement throughout the mounting process.

Abstract: The flexible belt evaporator employs an endless woven textile belt serving as a carrier for saline or otherwise contaminated water for evaporation of the water therefrom, and also serves as the evaporator surface. Mechanical equipment immersed in the saltwater and corresponding maintenance difficulties are largely avoided by placing most or all belt rollers clear of the liquid water tank of the system. Saltwater or contaminated water is sprayed onto the belt from above. The continuing passage of the belt about the exposed rollers results in water evaporation from the belt. Scale and residue buildup on the belt is removed by passing the belt through a wash tank. The wash tank preferably contains an ultrasonic generator to produce ultrasonic energy for removal of residue from the textile belt. The flexible belt evaporator system may be applied to evaporative cooling systems, humidifying systems, and salt or residue recovery systems.

Abstract: A system and method of controlling light distribution in a space including an installed light source, an external light source, at least one blind(s) for a window in the space, a lighting control unit and a daylight/blind control unit, the method includes, in the lighting control unit, estimating task illuminances from the installed light source and the external light source at a plurality of measuring areas within the space, determining an intensity level of each of the installed light source based on the estimated illuminances; and determining a first positioning of the blinds according to predetermined requirements and/or measurements, in the daylight/blind control unit, receiving the plurality of measuring areas data within the space, determining a second positioning of the blinds according to predetermined requirements, selecting either the first or second positioning of the blinds to provide optimal daylight comfort, glare prevention and view.

Abstract: An adjustable window treatment system has a valance frame attachable to a wall bordering a window frame, sliding door or opening. A first pulley is attached to one end of the valance frame and second and third pulleys attached to an opposite end of the valance frame. An attachment frame is suspended relative to the support frame via pulley cords that engage the pulleys. The attachment frame has hooks that couple to a curtain removably attachable to the attachment frame, the hooks being slidable relative to the attachment frame to allow the curtain to slide to one or both sides of the attachment frame to open the curtain. The attachment frame is movable from a raised position where it is disposed behind the face plate and a lowered position via actuation of the pulley cords by a user, thereby allowing the user to detach a curtain from the attachment frame without using a ladder or chair to remove the curtain.

Abstract: A hollow built-in blind includes two glass plates, an annular spacer cooperating with the glass plates to define a receiving space, and a blind disposed in the receiving space and including a lower rail, a plurality of slats, and two pull cords connected to the lower rail. A transmission unit includes a transmission shaft, a winding mechanism disposed on the shaft, and a belt pulley fixed to one end of the shaft. A drive unit is located at one lateral end of the blind and includes a guide wheel spaced apart from the belt pulley, an internal control device operable to move upward and downward in the receiving space, and a timing belt looped over the belt pulley and the guide wheel and having two opposite ends connected to the internal control device to form a closed loop.

Abstract: A fastening assembly for managing and statically positioning or holding objects, and for other uses, the fastening assembly comprising a flexible, corrugated tube, the tube having a first end and a second end, the first and second ends having an attachment mechanism, for example, male and female hook and loop ends (a mechanism commonly referred to by the trademark “Velcro”), which hook and loop ends are capable of being attached to each other to secure the ends of the tube to encompass various objects. The corrugated tube is extendable and condensable, and is allowed to encompass and detachably hold together curtains, drapes, towels, cords, wires, tubes of varying widths carrying liquid or air, lines, strings, or similar groupings of products having length where an advantage exists in collecting, coalescing, binding, and fastening a single product or a grouping of products.

Abstract: A system for tightening panels between two fixed structural members. The system includes a mechanism which can selectively loosen or tighten the panels between the structural members. The system can also include flaps to conceal any gaps between the panels as well as conceal certain structural elements. A series of these systems can be used to create a covering for a frame made of a plurality of fixed structures.

Abstract: A process using a multicomponent enzyme preparation to treat screened once refined pulps and reduces the specific energy consumption and/or increasing production while maintaining or increasing handsheet physical properties. The enzyme preparation has a major endoglucanase activity, a significant mannanase activity and a relatively small cellobiohydrolase activity. This enzyme mixture is prepared from a genetically modified strain of Trichoderma reseii.

Abstract: A process using a multicomponent enzyme preparation to treat chips that have been crushed using a device that combines shear and compressive forces where treatment occurs mainly during decompression and reduces the specific energy consumption and/or increasing production of subsequent refining while maintaining or increasing handsheet physical properties. The enzyme preparation is to have a major endoglucanase activity, a significant mannanase activity and a slight cellobiohydrolase activity. This enzyme mixture is prepared from a genetically modified strain of Trichoderma reseii.

Abstract: A process for pretreating lignocellulosic biomass that increases monomeric sugar yields in subsequent enzymatic hydrolysis and reduces specific energy consumption during production of the hydrolysable material. The pretreatment includes a chemical treatment followed by a mechanical size reduction such as a disc refining step, and includes a second chemical treatment, harsher than the first, which may precede or follow the size reduction.

Abstract: The present invention provides tissue products having a high degree of stretch and low modulus at relatively high tensile strengths, such as geometric mean tensile strengths greater than about 1500 g/3? and more preferably greater than about 2000 g/3?. The combination of a tough, yet relatively supple sheet is preferably achieved by subjecting the embryonic web to a speed differential as it is passed from one fabric in the papermaking process to another, commonly referred to as rush transfer.

Abstract: An uncoated recording medium includes a blend of hardwood and softwood chemical pulp fibers, and thermomechanical pulp (TMP) fibers, with total fiber content at least 80 wt % of the medium's total wt %. Hardwood fibers range from about 20 wt % to about 70 wt %, softwood fibers range from about 30 wt % to about 50 wt %, and TMP fibers range from about 10 wt % to about 30 wt %, all relative to the total fiber content. A TiO2 amount ranges from about 1.5 wt % to about 6 wt % of the total wt %, and a bivalent or multivalent salt amount ranges from about 6,000 to about 16,000 ?g/gram of the medium. The basis weight ranges from about 45 g/m2 to about 63 g/m2.

Abstract: The present invention provides tissue products having an MD/CD Tensile Ratio less than about 0.95, yet relatively high geometric tensile strength, such as geometric mean tensile strengths greater than about 1500 g/3? and more preferably greater than about 2000 g/3?. The combination of a tough, yet relatively supple sheet is preferably achieved by subjecting the embryonic web to a speed differential as it is passed from one fabric in the papermaking process to another, commonly referred to as rush transfer.

Abstract: The present invention provides tissue products having a high degree of stretch and low modulus at relatively high tensile strengths, such as geometric mean tensile strengths greater than about 1500 g/3? and more preferably greater than about 2000 g/3?. The combination of a tough, yet relatively supple sheet is preferably achieved by subjecting the embryonic web to a speed differential as it is passed from one fabric in the papermaking process to another, commonly referred to as rush transfer.

Abstract: A method of producing a trailing arm of a torsion beam axle in which an integrated drive unit of a wheel-adjacent electric drive has an electric machine and a transmission. By using the method, the trailing arm is produced in the form of a casting with a box profile. The contours for producing the area that accommodates the transmission, the connection point to the vehicle body, the bore that receives the cross-member which connects the two trailing arms to one another, the U-profile of the trailing arm, the box profile and the area that accommodates the electric machine, are modeled by cores such that the contours for producing the connection point of the trailing arm to the vehicle body, the bore that receives the cross-member and the U-profile of the trailing arm are modeled by one core.

Abstract: An arc melting and tilt casting apparatus having a casing provided with a vacuum chamber for housing a hearth having a melting trough and pouring means, arc-melting electrode means passing through the casing in the chamber, a mold having a melt receiving orifice, vacuum generating means, sealing means for maintaining the vacuum in the chamber and tilting means for tilting the apparatus to cause the melt to flow from the melting trough via the pouring means in the mold through the mold orifice. The hearth and mold are connected together and moveable as a single unit in the vacuum chamber and out from the chamber.

Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded, where the mold comprises calcium hexaluminate.

Abstract: An HVAC system includes a primary HVAC unit and a supplemental heat exchanger. The primary HVAC unit is disposed within a passenger compartment region of a motor vehicle and configured for at least one of heating and cooling a passenger compartment. The supplemental heat exchanger is spaced apart from the primary HVAC unit and also disposed within the passenger compartment region of the motor vehicle. The supplemental heat exchanger is configured to supplement at least one of the heating and the cooling of the passenger compartment by the primary HVAC unit.

Abstract: A dynamic insulation system suitable for deployment within an envelope or facade of a building or habitable construction is described. The system comprises one or more layers of insulation and one or more void space forming elements (5,12b). The void space forming element comprises a panel attachment means (6) for connecting this element to a layer of insulation and a spacer element (9) that provides a means for defining at least one void space within the envelope or facade to facilitate the uniform, bi-directional, actively or passively driven flow of ventilation air through the void space. The resultant dynamic insulation systems can be made directly from any commonly available insulation sheet material, or combination of materials. This reduces the costs of the system without sacrificing performance or versatility. The system can be cut to any dimension, and joined together without loss of functionality to maximise insulation coverage of the building envelope or facade.

Abstract: The present invention is directed to a heat and energy recovery assembly, system and method. The heat and energy recovery assembly and system may include an insulated chamber for effectuating heat and energy exchange between a primary heat recovery exchanger and the reaction products of fossil fuel combustion gases, waste products, and air. The heat and energy recovery assembly and system are particularly useful on furnace systems.

Abstract: The present disclosure relates to a mobile data centre unit, which is adapted to house at least one rackbeing designed to provide storage space for electronic equipment. The mobile data centre unit is equipped with passive cooling means in order to provide dissipation of heat being generated by the electronic equipment.

Abstract: A heat dissipation module includes a fin stack, a fan and buckles. The fin stack includes fins arranged at interval and in parallel with each other, wherein a notch is formed at an edge of each fin and the notches of the fins are in alignment. The fan includes through holes. Each buckle includes an elastic connecting piece, a first cylinder and a second cylinder. An extension portion is formed at one end of the elastic connecting piece. A lateral side of the first cylinder connects the extension portion. The second cylinder vertically extends from the other end of the elastic connecting piece. The first cylinder is snapped on corresponding notches. The second cylinder is received in a corresponding through hole. Whereby, the first cylinder could be easily snapped on and removed from the notch.

Abstract: In addition to efficiently removing residues from the inner wall of the inner tubes (20), reducing head loss and substantially improving the heat transfer coefficient, the present invention also allows obtaining different pumping flow rates for the product fluid. More particularly, the heat exchange unit (1) stands out because it comprises an elongated rotary rod (30) arranged inside at least one inner tube (20) and provided with cleaning means comprising scraping elements (40) suitable for scraping and detaching the product fluid accumulated on the inner wall of the at least one inner tube (20); and an endless spiral (50) dimensionally suitable for surrounding the rotary rod (30) longitudinally through the spaces existing between the scraping elements (40), said endless spiral (50) being suitable for displacement of the product fluid circulating through the at least one inner tube (20), generating a self-pumping effect.