WO2017129062A1 - 洗衣机、干衣机用翅片换热器及其制作方法 - Google Patents
洗衣机、干衣机用翅片换热器及其制作方法 Download PDFInfo
- Publication number
- WO2017129062A1 WO2017129062A1 PCT/CN2017/071904 CN2017071904W WO2017129062A1 WO 2017129062 A1 WO2017129062 A1 WO 2017129062A1 CN 2017071904 W CN2017071904 W CN 2017071904W WO 2017129062 A1 WO2017129062 A1 WO 2017129062A1
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- WIPO (PCT)
- Prior art keywords
- heat exchange
- fin
- heat exchanger
- tube
- washing machine
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0063—Condensers
Definitions
- the invention relates to the technical field of heat exchangers, and in particular to a fin heat exchanger for a washing machine and a clothes dryer and a manufacturing method thereof.
- a heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger.
- Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers. Heat exchangers are also used in equipment such as refrigerators, washing machines, dry cleaning machines, and air conditioners used in daily life. Conventional heat exchangers for washing machines and dryers are mainly parallel flow or copper tube fin heat exchangers. Although finned heat exchangers are mature in structure and manufacturing process, there are still some details of defects. .
- FIG. 1 A commonly used parallel flow form heat exchanger is shown in FIG. 1 , which comprises square tubes 121 arranged in parallel, a heat exchange fin 122 is arranged between the square tubes, a heat exchange medium is introduced into the square tube, and diffusion through the heat exchange sheet is performed.
- Heat exchange such a heat exchange structure has poor heat exchange efficiency and takes up a large space.
- the copper tube fin heat exchanger is shown in FIG. 2, which comprises a plurality of heat exchange copper tubes 123 and a plurality of fin groups 124. Each of the fin groups is respectively inserted with a heat exchange copper tube, and the heat exchange copper tubes are passed between The connecting elbow 120 is connected, and the two ends of the heat exchange copper tube are first flared 125 for inserting the connecting elbow, and then the heat exchange copper tube and the connecting elbow are integrally formed by welding, such that the heat exchange method There is no guarantee of smoothness between the inner wall of the copper pipe and the inner wall of the connecting elbow, and the second is to produce a solder joint at the heat exchange copper pipe and the connecting elbow.
- the disclosure number is CN204830968U, a utility model named "a fin-type heat exchanger containing a U-shaped heat exchange tube", between the two ports of the U-shaped heat exchange tube in the finned heat exchanger
- the elbow and the heat exchange tube are integrated by welding, that is to say, the heat exchange tube uses a welding method to connect a plurality of tubes, and the welding between the heat exchange tube and the elbow is adopted.
- the way to make the connection the junction between the tube and the tube produces a solder joint.
- the patent name is a dryer for dry clothes in a fully automatic washing machine, comprising a plurality of flat rectangular pipes arranged in parallel from top to bottom, disposed between adjacent pipes and on, Fins on the outer wall of the lower pipe, which constitute a metal core for heat exchange, the pipe is composed of a single composite aluminum alloy material bent and brazed; a plastic is connected at each end of the metal core
- the cover body is configured to form a drawer structure as a whole; the plastic cover body has a flat rectangular window that is butted against the pipe, and the periphery of the plastic cover body is provided with a rubber piece.
- the pipe is composed of a piece of composite aluminum alloy material bent and brazed.
- the pipe circulating as a medium also needs to be welded, that is, a solder joint is generated on the pipe.
- the thickness of the pipe through which the fluid passes is relatively thin.
- the high temperature generated by the welding is likely to cause damage to the heat exchange tube, the welding is difficult, and the quality of the welded portion is difficult to ensure.
- the third is because the joint of the joint number CN204830968U needs to be welded one week, and the public number CN202969102U pipe is bent and welded by a piece of composite aluminum alloy material. Due to the small volume of the heat exchanger itself, it is difficult to weld and takes a long time, which results in low efficiency of the heat exchanger/condenser, which increases the processing cost of the enterprise.
- an object of the present invention is to provide a washing machine and a dry machine which overcome the existing solder joints in the heat exchange pipe and have heat exchanger leakage due to the presence of solder joints, unstable heat exchange performance and short service life.
- a fin heat exchanger for a washing machine and a dryer comprising a fin group, and a heat exchange tube interposed in the fin group, the heat exchange tube being bent by a metal tube through a plurality of consecutive twists and turns and then passing at least once Folding into at least two rows of bypass groups and inserting into the above-mentioned fin group as a whole; both ends of the heat exchange tube are outside the fin group, one end serves as a medium inlet end, and the other end serves as a medium discharge end; the metal tube It is an aluminum tube or a copper tube.
- the fin group is formed by arranging a plurality of heat exchange fins, and in order to obtain a heat exchange space between the fins, a gap is formed between adjacent heat exchange fins in the fin group, in order to make the heat exchange tube and the fin Forming a firm bond between the sets of sheets and reasonably distributing the heat exchange space between the heat exchange tubes and the fin sets, and each of the heat exchange fins is provided with a plurality of sockets for inserting the twisted pipe segments in the heat exchange tubes, and each socket corresponds to Insert a bypass pipe section in the heat exchange tube.
- the sockets on the adjacent heat exchange fins in the fin group are projected from the upper surface or the lower surface of the heat exchange fin to form an overlap.
- the fin group includes two or more side by side arrangement, and the heat exchange fins arranged side by side in the adjacent fin group are integrally formed, and the integrated heat exchange fins are arranged in the lateral direction thereof. 12 sockets, arranged in the longitudinal direction 2-20 sockets.
- the heat exchange fins in the adjacent fin groups are staggered or in the same plane, and all the fin groups constitute a fin heat exchange unit for inserting the heat exchange tubes, and are arranged in the lateral direction of the fin heat exchange unit.
- the socket is arranged in an inclined manner on the corresponding heat exchange fin, and the center line of the socket and the lateral direction of the heat exchange fin An angle A is formed, and the angle A is 0°-90°.
- the socket includes two arc-shaped jacks, and a linear retaining slot connecting the two arc-shaped jacks between the two arc-shaped jacks, and two straight pipe sections of the heat exchange tube that are twisted back into the pipe section Insert one of the two arc-shaped jacks one by one.
- the gaps formed between the adjacent heat exchange fins are equal or unequal, and the planes of the adjacent heat exchange fins which are parallel to each other or adjacent to the heat exchange fins form a cross.
- heat exchange fins are straight or wave type.
- the meandering bend of the heat exchange tube is an arc segment.
- the heat exchange tube removes the bypass pipe section at the fold, and forms an angle B between the planes of the adjacent bypass pipe segments at other places.
- the outer diameter ⁇ of the heat exchange tube is 6 mm - 12.7 mm
- the wall thickness d1 is not less than 0.4 mm
- the thickness d2 of the heat exchange fin is not less than 0.09 mm.
- the inner wall of the heat exchange tube is a smooth surface or a flow guiding tooth arranged along the length direction of the heat exchange tube.
- the heat exchange tube is bent and formed by a continuous twisting of a metal tube, and then the formed heat exchange tube is integrally inserted into the fin group as a whole, in the whole heat exchange tube.
- the heat exchanger with such a structure solves the current problem, that is, there is no damage caused by the need to weld, the heat exchange tube during the welding process, and the heat exchange tube is ensured;
- a whole heat exchange tube is circulated, there is no impact damage to the heat exchange tube due to the large impact force of the fluid, and the fluid is not caused by the high temperature of the fluid flowing into the heat exchange tube.
- the leakage of the medium ensures the heat exchange performance of the heat exchange tubes; and there is no problem that the inner wall of the welded pipe joints is uneven, the flow of the fluid medium is hindered, and the performance of the heat exchanger is low.
- the heat exchange tube is continuously twisted and bent and formed into a whole after folding and the heat exchange tube is inserted into the fin group as a whole.
- the heat exchanger is simple and convenient to manufacture, and the heat exchanger is improved.
- the working efficiency, and the production cost of the heat exchanger is reduced, and the utility model is convenient for popularization and use, and the clothes dryer and the washing machine adopting the heat exchanger are effectively protected in the drying function, and the heat exchanger problem does not occur. Frequent repairs and replacements.
- a washing machine and a clothes dryer comprising the fin heat exchanger, which is formed by inserting a fin by a metal tube after a plurality of continuous twisting and bending and at least one folding to form at least two rows of bypass pipes.
- the composition of the group enhances the drying function of the washing machine and the dryer.
- a method for manufacturing a fin heat exchanger for a washing machine or a dryer includes the following steps:
- the total length of a metal tube and the number of heat exchange fins in the fin group are determined according to the size of the heat exchanger;
- the second step is to determine the number of twists and turns of the metal tube and the radius R of the bend back;
- the metal pipe is bent back and bent in the second step and the bending radius, and the twisted return pipe is folded at least once to form at least two rows of the bypass pipe group to obtain Heat exchange tube
- a plurality of sockets for inserting the heat exchange tubes into the heat exchange fins are processed by each of the heat exchange fins, and the corresponding positions on the heat exchange fins are overlapped after being projected;
- the heat exchange fins are sequentially arranged on the assembly mold, a gap arrangement is formed between the adjacent heat exchange fins, and the sockets at the same position between the adjacent heat exchange fins on the assembly mold are projected and overlapped to obtain a fin group formed by heat exchange fins;
- the heat exchange tube obtained in the third step is inserted into the fin group in the fifth step as a whole, and the corresponding ones of the heat exchange tubes are inserted into the corresponding positions on the fin group. After being inserted into position, the twisting and bending section of the bypass pipe in the heat exchange tube is outside the fin group;
- the heat exchange tube inserted in the fin group is introduced into the fluid to expand the tube, so that a solid combination is formed between the heat exchange tube and the fin group to obtain an integral heat exchanger, and the obtained heat exchanger is obtained.
- the heat exchanger is removed from the assembly mold, that is, the heat exchanger is completed.
- the obtained heat exchange tube removes the bypass pipe section at the fold, and the other twisted pipe sections at other places form a bend of 0°-90°.
- sockets are arranged obliquely or horizontally or vertically on the heat exchange fins.
- the heat exchange tube in the heat exchanger is inserted into the arranged fin group by continuous bending of a metal tube, and can be used for an evaporator or a condenser, and has the advantages that the whole part is integrated except for the inlet and outlet. There is no solder joint, the safety hazard of leakage is eliminated, the production process is simple, the cost is low, and the heat exchange performance is high.
- the product of the process structure breaks the traditional concept and application range of the heat exchanger for the washing machine and the dryer. The technical innovation and breakthrough of the equipment products in this industry.
- FIG. 1 is a schematic structural view of a conventional heat exchanger
- FIG. 2 is a schematic structural view of a bent portion of a heat exchange tube in a conventional heat exchanger
- Embodiment 3 is a schematic structural view of Embodiment 1 of a heat exchanger according to the present invention.
- Figure 4 is a top plan view of Figure 3;
- Figure 5 is a schematic left side view of Figure 3;
- Figure 6 is a schematic right side view of Figure 3;
- FIG. 7 is a schematic structural view of a second embodiment of a heat exchanger according to the present invention.
- FIG. 7A is a schematic rear view of FIG. 7;
- Figure 8 is a schematic plan view showing the structure of a single heat exchange fin in the present invention.
- Figure 9 is a schematic view showing the planar structure of a heat exchange tube formed after a plurality of twists and turns bending in the present invention.
- Figure 10 is a schematic view showing the shape of the heat exchange tube formed by folding the heat exchange tube of Figure 9;
- Figure 11 is a schematic left side view of Figure 10;
- FIG. 12 is a schematic cross-sectional structural view of a first embodiment of a heat exchange tube according to the present invention.
- Figure 13 is a schematic cross-sectional view showing the second embodiment of the heat exchange tube of the present invention.
- Figure 14 is a schematic cross-sectional view showing the third embodiment of the heat exchange tube of the present invention.
- Figure 15 is a schematic cross-sectional view showing the fourth embodiment of the heat exchange tube of the present invention.
- Figure 16 is a schematic cross-sectional view showing the fifth embodiment of the heat exchange tube of the present invention.
- Figure 17 is a schematic view showing another structure of a bend portion of a heat exchange tube returning pipe section in the present invention.
- Figure 18 is a schematic structural view of Embodiment 3 of the heat exchanger of the present invention.
- Figure 19 is a schematic structural view of a fourth embodiment of a heat exchanger according to the present invention.
- Embodiment 5 of a heat exchanger is a schematic structural view of Embodiment 5 of a heat exchanger according to the present invention.
- FIG. 21 is a schematic structural view of Embodiment 6 of a heat exchanger according to the present invention.
- Figure 22 is a schematic structural view of Embodiment 7 of the heat exchanger of the present invention.
- Figure 23 is a schematic view showing the structure of an embodiment 8 of the heat exchanger of the present invention.
- 100 is a fin heat exchanger
- 101 is a fin group
- 102 is a heat exchange tube
- 103 is a bypass tube group
- 104 is a medium inlet end
- 105 is a medium discharge end
- 106 is a heat exchange fin
- 107 For the gap
- 108 is the return pipe section
- 109 is the socket
- 110 is the arc-shaped jack
- 111 is the retaining slot
- 112 is the straight pipe section
- 113 is the winding bend
- 114 is the fold
- 115 is the inner groove
- 116 For the internal teeth
- 117 is the first side wall
- 118 is the second side wall
- 119 is the bottom wall of the groove
- 120 is the connecting elbow.
- a fin heat exchanger 100 for a washing machine and a dryer includes a fin group 101 and a heat exchange tube 102 interposed in the fin group, and the heat exchange tube is bent by a metal tube through a plurality of consecutive twists and turns and then at least One fold is formed to have at least two rows of bypass groups 103 and then inserted into the above-mentioned fin group as a whole; both ends of the heat exchange tube are outside the fin group, one end serves as a medium inlet end 104, and the other end serves as a medium discharge end 105.
- the metal tube is made of aluminum tube or copper tube with good thermal conductivity. In order to consider the manufacturing cost and the processability, the aluminum tube is preferably used for bending.
- the fin group is formed by a plurality of heat exchange fins 106, and a gap 107 is formed between adjacent heat exchange fins in each fin group, and a branch pipe section is disposed on each heat exchange fin for the heat exchange tube 108 is inserted into a plurality of sockets 109, each of which is correspondingly inserted into a bypass pipe section in the heat exchange tube.
- the single heat exchange fins in the fin group in the present embodiment are one-piece in one piece to enhance the heat diffusion capability of the entire heat exchange fin.
- the heat exchange fins can be made of a metal sheet having a good heat transfer property such as an aluminum sheet or a copper sheet.
- the sockets on the adjacent heat exchange fins in the fin group overlap with the projection of the light source from the upper surface or the lower surface of the heat exchange fin, so that the smoothness of the heat exchanger tube is ensured, and the second is to ensure
- the heat exchange tubes installed on each heat exchange fin can be uniform and uniform to ensure the heat exchange performance of the entire heat exchanger.
- Each of the heat exchange fins is arranged with 2-12 sockets in its lateral direction and 2-20 sockets in its longitudinal direction. Referring to Fig. 8, four sockets are arranged in the lateral direction of the heat exchange fins, and four sockets are arranged in the longitudinal direction. Of course, the number of sockets of the heat exchange fins in the lateral or longitudinal direction thereof can be opened as needed. Meet the requirements of making heat exchangers of different sizes.
- the socket is arranged on the heat exchange fin in the same direction, and the center line of the socket is
- the transverse direction of the heat exchange fin forms an angle A, and the angle A is between 0° and 90°.
- the angle A is 0°
- the overall shape of the socket is consistent with the lateral direction of the heat exchange fin, that is, the socket is horizontal.
- the whole of the socket is consistent with the longitudinal direction of the heat exchange fin, that is, the socket is arranged vertically on the heat exchange fin; when the socket is inclined, preferably 50° -70°, such as 50° or 55° or 60° or 65° or 70°, can increase the heat exchange area and reduce the volume of the heat exchanger.
- each socket in order to ensure that the socket can form a stable combination with the inserted heat exchange tube returning pipe segments, each socket includes two curved jacks 110, and two arc jacks are connected between the two arc jacks.
- Straight type yielding slot 111 let The width of the slot is smaller than the arc-shaped jack but slightly larger than the outer diameter of the heat exchange tube, and the arc-shaped jack is an arc-shaped jack larger than the central angle of more than 180°; the two straight-line segments 112 of the bypass pipe section in the heat exchange tube are respectively One-to-one insertion is inserted into two arc-shaped jacks.
- the loop-back bend 113 in the loop-back pipe section is inserted through the let-off slot, and the two straight pipe sections on both sides of one turn-back section are respectively placed in two arc-shaped inserts.
- the outer diameter of the heat exchange tube is increased by expanding the heat exchange tube to compensate for the straight line.
- the gap between the pipe section and the arc-shaped insertion hole enables the outer wall of the straight pipe section to form a firm bond with the inner wall of the arc-shaped insertion hole, thereby stably assembling the heat exchange pipe into the fin group.
- the obliquely arranged sockets are inserted into the ones of the heat exchange tubes one by one, so that the entire heat exchange tubes are obliquely inserted on the fin groups, so that the structure can not only increase the length of the heat exchange tubes, but also increase the heat exchange.
- the number of bending of the tube makes the medium circulation time longer, prolongs the heat exchange time, makes the heat exchange performance better, and the scope of action becomes wider; in addition, the heat exchange tube is compact but not dense, and the layers are distinct. Very convenient for installation and maintenance.
- such a structure can reduce the volume of the heat exchanger, greatly reduce the space occupied by the heat exchanger, and the heat exchange tube can be better.
- the connection with the heat exchange fins is compact and firm; and it facilitates the assembly of the heat exchange tubes and fins, greatly improves the assembly efficiency and product quality, and improves the efficiency of the enterprise.
- the gaps formed between the adjacent heat exchange fins may be equal or unequal, and the planes of the adjacent heat exchange fins which are parallel to each other or adjacent to the heat exchange fins form an intersection.
- the gaps between the heat exchange fins are selected equally and the heat exchange fins are kept parallel.
- adjacent The gap d3 between the heat exchange fins is not less than 2 mm to ensure sufficient heat exchange space between the heat exchange fins and improve the heat exchange capacity of the heat exchanger.
- the heat exchange fins in this embodiment are straight or wave type, and when the heat exchange surface is obtained, the heat exchange fins can be processed into a wave shape, and the heat exchange fins have a shape relative to the straight fin type heat exchange fins. Larger heat transfer surface to further enhance the heat exchange capacity of the entire heat exchanger.
- the straight-sheet heat exchange fins are easier to manufacture and produce, reduce the input cost of the production equipment, and improve the processing efficiency of the heat exchange fins. Therefore, the heat exchange fins shown in the drawings of the present embodiment are of a straight type.
- the meandering bend 113 of the heat exchange tube is an arc-shaped section.
- the meandering bend of the fold-out portion 114 in the heat-exchange tube is greater than the curvature of the other bend-back bend.
- the curvature of the winding back bend can also be the same as that of other non-folding bends, depending on the product requirements.
- the winding pipe section of the heat exchange tube is arranged in the horizontal direction except for the turn-over pipe section, and an angle B is formed between the planes of the adjacent bypass pipe sections at other places, and the angle between the angle A and the angle B is selected, and the heat exchange tube is selected.
- the single bypass group on both sides of the middle fold appears to be arranged in a wave shape to ensure that the twisted and folded heat exchanger can be smoothly inserted into the corresponding position of the socket; the heat exchange shown in FIG. In the tube, there are three folds, that is, four loopback groups. Of course, the number of the two can be rooted. According to different size of the heat exchanger to determine.
- the outer diameter ⁇ of the heat exchange tube in this embodiment is 6 mm or 7 mm or 8 mm or 9 mm or 10 mm or 11 mm or 12.7 mm, the wall thickness d1 is not less than 0.4 mm, and the thickness d2 of the heat exchange fin is not less than 0.09 mm.
- the inner wall of the heat exchange tube is a smooth surface or a guide arranged along the length of the heat exchange tube.
- the flow tooth; the guide tooth may be linear or spiral arranged on the inner wall of the heat exchange tube.
- the inner wall of the heat exchange tube is uniformly provided with a plurality of inner grooves 115 recessed toward the inner wall of the heat exchange tube, and inner teeth 116 protruding toward the middle portion of the heat exchange tube are formed between the adjacent inner grooves.
- the inner groove and the inner tooth extend in the axial direction of the inner wall of the heat exchange tube, and the inner groove is formed by the first side wall 117, the second side wall 118 and the bottom wall 119, and the first side wall 117 and the second side An angle ⁇ is formed between the walls 118, and different inner groove structures can be realized by selecting different angles ⁇ ; as shown in FIG.
- the shape of the inner groove is a trapezoid shape with a large notch and a small groove bottom; or FIG.
- the shape of the inner groove is a rectangular shape having the same size as the groove bottom; or as shown in FIG. 14, the inner groove shape is a dovetail shape having a small groove and a large groove bottom.
- the cross section of the inner groove is curved; and the triangular shape as shown in Fig. 16.
- the inner grooves of different cross sections constitute different guiding teeth, so as to efficiently guide the flow medium in the heat exchange tube and increase the contact area between the circulating medium and the heat exchange tube, thereby improving the heat transfer efficiency.
- the guide tooth is used on the inner wall of the heat exchange tube, on the one hand, the weight of the heat exchange tube can be reduced, that is, the weight of the heat exchange tube is reduced, and the deformation is not easy to be performed during the manufacturing process of the bent tube to ensure the quality of the product;
- the tooth can increase the contact area of the fluid medium in the tube and improve the heat exchange efficiency; in particular, the inner wall of the ordinary heat exchange tube is a smooth structure, and collisions are inevitable during the installation process, so that the tube may form a pit, and the inner wall of the tube member
- the formation of the convex portion disturbs the flow stability and flow of the fluid in the tube, causes uneven heat exchange area, insufficient heat exchange, and short service life, and these problems can be solved by the guide tooth, and the guide tooth can be made
- the heat transfer coefficient of the entire heat exchanger is greatly improved.
- the production is convenient, fast, and the yield is high.
- it is necessary to ensure that the spliced fins are on the same horizontal surface and seamlessly connected, otherwise the spacing between the fins cannot be ensured, and once the deviation occurs, the re-production may occur, otherwise the heat exchange may be caused.
- the heat exchange effect of the device is also affected; and the invention completely avoids this situation, greatly reduces the wind resistance between the fins, improves the heat exchange rate and the heat exchange effect, and greatly reduces the useless work and improves the yield.
- the meandering bend of the heat exchange tube is an arc segment, which ensures smooth flow of the fluid medium in the tube and stable flow rate.
- the connection between the connecting elbow of the copper tube fin heat exchanger and the heat exchange copper tube is not a smooth connection and there is a solder joint.
- the surface of the tube is recessed in the phase, and there are many folds, that is, the diameter of the tube.shrinked.
- the flow rate and flow rate are affected.
- the original medium flows smoothly in the tube, and the rapid flow is suddenly formed in the elbow, which is very unfavorable for the effective heat exchange, and the heat exchange tube will be Uneven heating and cooling causes the heat exchange tubes to burst and is very unsafe.
- the curved portion of the winding back solves the problem, and the use is safe and reliable and the heat exchange efficiency is improved.
- Embodiment 2 of the heat exchanger of the present invention is described:
- Embodiment 2 differs from Embodiment 1 in that the fin group is composed of two side by side, and the heat exchange fins of the two fin groups may be staggered or may be in the same plane, but the two fin groups
- the heat exchange fins are independent of each other and are not integral.
- the two fin sets form a fin heat exchange unit for inserting a bent heat exchange tube; likewise, the lateral direction of the fin heat exchange unit
- There are 2-12 sockets, and 2-20 sockets are arranged in the longitudinal direction for the heat exchange tube after twisting and folding.
- the number of fin groups can be set as needed, such as three, four, and so on.
- the number of rows of the bypass pipe group can be increased, as shown in FIGS. 18 and 19: a heat exchanger having six rows of bypass pipes; as shown in FIG. 20: having eight rows of bypass pipes
- the heat exchanger of the group of course, the increase in the number of the return pipe group can be increased according to the size of the different assembly space; at the same time, the number of columns of the bypass pipe group can be increased on the basis of the second embodiment of the heat exchanger, such as Figure 21 shows a six-row heat exchanger consisting of three fin sets (two rows of bypass groups in each fin set); as shown in Figure 22, two fin sets (each fin set) There are three rows of heat exchangers in which three rows of helium return pipes are formed, and eight columns of heat exchangers composed of two fin groups (four rows of bypass pipes in each fin group) as shown in FIG.
- the fin group when the number of rows of the loopback pipe group is not more than 6, the fin group preferably adopts a monolithic structure; when the number of rows of the loopback pipe group is greater than 6, two or more fin groups may be selected.
- a washing machine and a clothes dryer include the fin heat exchanger, which has at least two columns formed by a metal pipe after a plurality of continuous twisting and bending and then at least one folding. After the return pipe group is inserted into the fin group as a whole, the drying function of the washing machine and the dryer is improved.
- the fin heat exchanger here can be realized by any of the above embodiments, and the fin heat exchanger can directly replace the heat exchange part in the current washing machine and the dryer, and the space is reduced, and The heat transfer performance is greatly improved.
- a method for manufacturing a fin heat exchanger for a washing machine or a dryer includes the following steps:
- the first step is to determine the total length of a metal tube and the number of heat exchange fins in the fin group according to the size of the heat exchanger; here, the heat exchange tube can be fabricated by using only one aluminum tube, and the wing
- the production of the film has also been changed from the original two stitching to the current one-piece integral, which not only saves a lot of cost, but also prevents the fin from being deformed, resulting in a reduction in the heat exchange effect of the fin, and at the same time ensuring the heat exchange tube.
- the air tightness and the firmness of the heat exchanger structure are examples of the heat exchanger structure.
- the number of times of bending N 1 , N 2 , N 3 and the bending radii R 1 , R 2 , R 3 of the first bypass pipe group 121, the second bypass pipe group 122 and the third bypass pipe group 123 are determined.
- the bending wheel with the radius R 1 , R 2 , and R 3 is selected; this can quickly and accurately bend the aluminum tube, thereby forming the heat exchange tube, saving time and greatly improving work efficiency.
- the bending wheel of R 1 is manually bent at the bending point, and the first winding pipe group is formed after bending N 1 times, and then the bending wheel with the diameter R 2 is replaced by N 2 times to form a second roundabout.
- the bending wheel of the diameter R 3 is bent N 3 times to form a third loopback group, and then the first loopback group middle, the second loopback group, and the third turnback plugging portion are turned over. Folding, the heat exchange tube as shown in Fig.
- the process steps are clear, the higher production requirements can be achieved, the yield and quality of the product can be improved, and the yield rate can be improved; the heat exchange tube is removed during the twisting and bending process of the heat exchange tube
- the loopback section of the fold is bent at 0°-90° between adjacent loopback sections at other locations.
- the R 2 or the meandering bends R 1 , R 3 of the folds may be a whole R of a circular arc segment (as shown in FIG. 9 ), or may be two arc segments R 10 . Formed in connection with the intermediate straight section 126 (as shown in Figure 17). According to different product needs, choose to use.
- a plurality of sockets for inserting the heat exchange tubes into the heat exchange fins are processed by each of the heat exchange fins, and the corresponding positions of the heat transfer fins are overlapped after projection; the sockets are inclined Arranged on the heat exchange fin; the socket includes two arcuate jacks, and a linear retaining slot that connects the two arcuate jacks between the two arcuate jacks.
- the center line of the socket forms an angle A with the lateral direction of the heat exchange fin, and the angle A is between 0° and 90°. When the angle A is 0°, the overall shape of the socket is consistent with the lateral direction of the heat exchange fin.
- the socket is arranged horizontally on the heat exchange fin; when the angle A is 90°, the whole of the socket is consistent with the longitudinal direction of the heat exchange fin, that is, the socket is arranged vertically on the heat exchange fin;
- 50°-70° such as 50° or 55° or 60° or 65° or 70°, can increase the heat exchange area and reduce The volume of the heat exchanger. Select settings as needed.
- the bending angle between the loopback sections is preferably the same as the angle of the socket.
- the heat exchange fins are sequentially arranged on the assembly mold, a gap arrangement is formed between the adjacent heat exchange fins, and the sockets at the same position between the adjacent heat exchange fins on the assembly mold are projected and overlapped to obtain a fin group formed by heat exchange fins;
- the heat exchange tube obtained in the third step is inserted into the fin group in the fifth step as a whole, and the corresponding ones of the heat exchange tubes are inserted into the corresponding positions on the fin group.
- the twisting and bending section of the bypass pipe in the heat exchange tube is outside the fin group; when the plug is inserted, the twisting and bending portion in the twisting pipe is inserted through the letting slot, and two sides of one turnback portion Straight pipe segments are inserted into the two arcuate jacks.
- the fin group here may be formed by one fin group or may be formed by two or more fin groups.
- the outer wall of the heat exchange tube forms an interference fit with the inner hole of the socket, and the heat exchange tube and the fin group form a firm joint to obtain a monolithic heat exchanger, and the obtained heat exchanger is assembled from the mold.
- a copper tube is welded on both ends of the heat exchange tube, and the other end of the copper tube is sealed with a sealing sleeve, and a heat shrinkable tube is formed at a welded portion of the copper tube and the heat exchange tube to form a protective sleeve.
- the heat transfer area of a single system of the structural heat exchanger shown in Figure 1 can be more than 10 square meters, and the heat transfer coefficient can reach K ⁇ 1000 W / m 2 ° C, while the heat transfer of the single system of the heat exchanger of the present invention
- the area can be more than 14 square meters, the heat transfer coefficient can reach K ⁇ 3000W / m2 ° C, the scope of action is significantly larger, and the heat transfer effect is obvious.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Textile Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Claims (16)
- 洗衣机、干衣机用翅片换热器,包括翅片组,以及穿插于翅片组中的换热管,其特征在于,所述换热管由一根金属管经过多次连续迂回弯折再经过至少一次翻折形成具有至少两列迂回管组后作为整体插入上述翅片组中;换热管的两端处于翅片组的外部,一端用作介质进入端,另一端用作介质排出端;金属管为铝管或铜管。
- 根据权利要求1所述的洗衣机、干衣机用翅片换热器,其特征在于,所述翅片组由多个换热翅片排列而成,翅片组中相邻换热翅片之间形成间隙,在每个换热翅片上开设有供上述换热管中迂回管段插入的多个插口,每一个插口对应插入换热管中的一个迂回管段。
- 根据权利要求2所述的洗衣机、干衣机用翅片换热器,其特征在于,所述翅片组中相邻换热翅片上的插口从换热翅片的上表面或下表面投影后形成重叠。
- 根据权利要求2所述的洗衣机、干衣机用翅片换热器,其特征在于,所述翅片组包括并排排列的两个或两个以上,相邻翅片组中并排的换热翅片为一体式成型,构成的一体式换热翅片在其横向方向布置有2—12个插口,在其纵向方向布置有2—20个插口。
- 根据权利要求4所述的洗衣机、干衣机用翅片换热器,其特征在于,相邻翅片组中的换热翅片错开布置或处于同一平面内,所有翅片组构成一个翅片换热单元供上述换热管插入,在翅片换热单元的横向方向布置有2—12个插口,纵向方向布置有2—20个插口。
- 根据权利要求4或5所述的洗衣机、干衣机用翅片换热器,其特征在于,所述插口呈倾斜方式布置在对应的换热翅片上,插口的中心线与换热翅片的横向之间形成夹角A,夹角A为0°—90°。
- 根据权利要求6所述的洗衣机、干衣机用翅片换热器,其特征在于,所述插口包括两个弧形插孔,以及处于两个弧形插孔之间连通两个弧形插孔的直线型让位槽口,换热管中迂回管段的两个直线管段分别一一对应插入两个弧形插孔中。
- 根据权利要求4或5所述的洗衣机、干衣机用翅片换热器,其特征在于,相邻换热翅片之间形成的间隙相等或不等,相邻换热翅片之间相互平行或相邻换热翅片延伸出的平面形成交叉。
- 根据权利要求8所述的洗衣机、干衣机用翅片换热器,其特征在于,所述换热翅片为直片式或波浪式。
- 根据权利要求1所述的洗衣机、干衣机用翅片换热器,其特征在于,所述换热管的迂回弯折处为弧形段。
- 根据权利要求1所述的洗衣机、干衣机用翅片换热器,其特征在于,所述换热管中除去翻折处的迂回管段,其他处的相邻迂回管段所在平面之间形成夹角B。
- 根据权利要求1—5、7或9—11中任一项所述的洗衣机、干衣机用翅片换热器,其特征在于,所述换热管的外径φ为6mm—12.7mm,壁厚d1不小于0.4mm,换热翅片的厚度d2不小于0.09mm。
- 根据权利要求1—5、7或9—11中任一项所述的洗衣机、干衣机用翅片换热器,其特征在于,所述换热管内壁为光滑面或者为沿着换热管的长度方向布置的导流齿。
- 一种洗衣机、干衣机,其特征在于,包括如权利要求1—5、7或9—11中任一项所述的翅片换热器。
- 洗衣机、干衣机用翅片换热器制作方法,其特征在于,包括以下步骤:第一步,根据换热器的大小来确定一根金属管的总长度以及翅片组中换热翅片的片数;第二步,确定金属管的迂回弯折次数,以及迂回弯折处的半径R;第三步,将金属管以第二步中弯折次数及弯折半径进行迂回弯折,并将迂回弯折后的迂回管进行至少一次的翻折形成至少两列的迂回管组,以获得换热管;第四步,采用冲压设备在每一个换热翅片加工出供上述换热管迂回管装插的多个插口,每个换热翅片上对应位置的插口在投影后形成重叠;第五步,将换热翅片依次排列于组装模具上,相邻换热翅片之间形成间隙布置,且组装模具上相邻换热翅片之间同位置的插口投影后重叠,以获得由换热翅片排列而成的翅片组;第六步,将第三步中获得的换热管作为整体插入第五步中翅片组中,换热管中的迂回管一一对应的装插入于翅片组上对应位置的插口中,装插到位后,换热管中迂回管的迂回弯折段处于翅片组外部;第七步,使换热管外壁与插口内孔形成过盈配合,换热管与翅片组之间形成牢固结合,以获得整体式的换热器,将获得的换热器从组装模具上取下,即完成换热器的制作过程。
- 根据权利要求15所述的洗衣机、干衣机用翅片换热器制作方法,其特征在于,在第三步中,所获得的换热管除去翻折处的迂回管段,其他处的相邻迂回管段之间形成0°-90°的弯折。
Priority Applications (4)
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KR1020187020170A KR20180097638A (ko) | 2016-01-29 | 2017-01-20 | 세탁기, 건조기용 핀 열교환기 및 그의 제조 방법 |
JP2018533782A JP2019502085A (ja) | 2016-01-29 | 2017-01-20 | 洗濯機・衣類乾燥機用フィンチューブ熱交換器及びその製造方法 |
EP17743677.1A EP3409827A4 (en) | 2016-01-29 | 2017-01-20 | HEAT EXCHANGER WITH FINS FOR LAUNDRY OR DRYER, AND METHOD FOR MANUFACTURING THE SAME |
US16/048,639 US20180335260A1 (en) | 2016-01-29 | 2018-07-30 | Fin heat exchanger for clothes washing machine or clothes dryer, and method for manufacturing same |
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CN201610065765.2A CN105544165A (zh) | 2016-01-29 | 2016-01-29 | 干洗机用冷凝器以及制作方法 |
CN201610065765.2 | 2016-01-29 |
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US16/048,639 Continuation US20180335260A1 (en) | 2016-01-29 | 2018-07-30 | Fin heat exchanger for clothes washing machine or clothes dryer, and method for manufacturing same |
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WO2017129062A1 true WO2017129062A1 (zh) | 2017-08-03 |
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US (1) | US20180335260A1 (zh) |
EP (1) | EP3409827A4 (zh) |
JP (1) | JP2019502085A (zh) |
KR (1) | KR20180097638A (zh) |
CN (1) | CN105544165A (zh) |
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CN105544165A (zh) * | 2016-01-29 | 2016-05-04 | 常州市常蒸蒸发器有限公司 | 干洗机用冷凝器以及制作方法 |
CN107199274B (zh) * | 2017-05-09 | 2020-08-04 | 柳州申通汽车科技有限公司 | 加工汽车空调冷凝器芯体的装置 |
CN108862554B (zh) * | 2018-07-11 | 2021-09-14 | 广州市自净环保有限公司 | 一种用于污水净化的加温曝气池及其方法 |
CN108917429B (zh) * | 2018-07-30 | 2024-05-28 | 常州市常蒸热交换器科技有限公司 | 斜插管式翅片蒸发器 |
CN108930849A (zh) * | 2018-08-27 | 2018-12-04 | 常州市常蒸蒸发器有限公司 | 一种制冷设备用铜铝接头及制造工艺 |
CN112179164B (zh) * | 2019-07-05 | 2022-02-15 | 海信容声(广东)冷柜有限公司 | 一种翅片式换热器及制冷设备 |
CN112045013B (zh) * | 2020-08-24 | 2021-03-09 | 湛江通宝制冷设备有限公司 | 一种热交换器冷凝组件制作加工工艺 |
WO2024087687A1 (zh) * | 2022-10-26 | 2024-05-02 | 无锡小天鹅电器有限公司 | 换热器结构及衣物处理设备 |
CN117260203A (zh) * | 2023-08-29 | 2023-12-22 | 江苏龙净节能科技有限公司 | 一种热管换热模块制造方法 |
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- 2017-01-20 EP EP17743677.1A patent/EP3409827A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
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CN105544165A (zh) | 2016-05-04 |
JP2019502085A (ja) | 2019-01-24 |
EP3409827A4 (en) | 2019-03-06 |
US20180335260A1 (en) | 2018-11-22 |
KR20180097638A (ko) | 2018-08-31 |
EP3409827A1 (en) | 2018-12-05 |
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