An air conditioner outdoor unit fin mold and an air conditioner outdoor unit fin

Abstract

The present invention discloses a fin die for an outdoor unit of an air conditioner. The die includes an upper die, and the upper die includes an upper die body and a plurality of punches arranged on the bottom surface of the upper die body. The punches are in the shape of a curved cylinder, and the cross-sections of the plurality of punches perpendicular to their own axes are all circular and have equal dimensions; the axes of the plurality of punches are all arc lines, and the centers of the circular arc axes of the plurality of punches fall on a first straight line, and the first straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body. The flanging obtained by stamping with the punches and the flanging concave holes is also in the shape of a curved cylinder surface, and the inner wall shape of the flanging is the same as the outer wall shape of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger. After assembly, the inner wall of the flanging fits well with the outer wall of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger, the contact area is increased, thereby reducing the contact thermal resistance and improving the heat exchange efficiency of the fin.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly relates to a fin mold for an air conditioner outdoor unit and a fin for an air conditioner outdoor unit. Background Art

[0002] Existing household air conditioner outdoor units mainly use finned heat exchangers for heat exchange. In the case where the air conditioner installation positions in buildings are becoming more and more crowded, for side-inlet outdoor units, their heat exchangers are usually J-shaped heat exchangers.

[0003] Refer to Figures 1-4 , the heat exchange tubes of the J-shaped heat exchanger are horizontally arranged and in the shape of a J. The straight pipe sections of the J-shaped heat exchange tubes extend along the inner wall of the rear air inlet surface close to the air conditioner outdoor unit, and the arc pipe sections of the J-shaped heat exchange tubes bend the heat exchange tubes towards the side wall. Compared with the straight pipe heat exchanger, the J-shaped heat exchanger makes full use of the internal space of the outdoor unit and extends the length of the heat exchange tubes, thereby improving the heat exchange efficiency.

[0004] Fins are provided on both the straight pipe sections and the arc pipe sections of the heat exchange tubes of the J-shaped heat exchanger. During the assembly process of the heat exchanger, several heat exchange tubes are matched with the corresponding fin holes of each fin to form a tube-fin type J-shaped heat exchanger. A flanging structure is provided along the periphery of the fin holes, and the flanging of one fin among two adjacent fins abuts against the other fin. The flanging structure can be used to position the fins.

[0005] In order to make the fin installation more convenient, an interference fit is formed between the flanging of the fin holes on the fin body and the heat exchange tubes, so as to ensure a certain contact area between the flanging and the heat exchange tubes, thereby reducing the contact thermal resistance between the flanging and the heat exchange tubes.

[0006] The above assembly method has a good effect on the straight pipe sections of the heat exchange tubes. However, for the arc pipe sections of the heat exchange tubes, the following defects exist in this assembly method: Since the arc pipe sections of the heat exchange tubes are circular arcs, and the axis of the flanging of the fin holes is a straight line, although a certain degree of interference fit is adopted, there are still parts of the inner wall surface of the flanging that do not contact the outer wall surface of the arc pipe sections of the heat exchange tubes, which affects the heat transfer between the heat exchange tubes and the fins and is not conducive to improving the heat exchange efficiency. Summary of the Invention

[0007] The purpose of the present invention is to solve the defects existing in the prior art, and to propose a fin mold for an air conditioner outdoor unit and a fin for an air conditioner outdoor unit. The fin for the air conditioner outdoor unit can increase the contact area between the arc pipe sections of the J-shaped heat exchange tubes of the J-shaped heat exchanger and the flanging of the fin holes, thereby improving the heat exchange efficiency of the air conditioner outdoor unit.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] An air conditioner outdoor unit fin mold, the air conditioner outdoor unit fin mold includes: an upper mold, the upper mold includes an upper mold body and a plurality of punches arranged on the bottom surface of the upper mold body; a lower mold, the lower mold includes a lower mold body, and a plurality of flanging concave holes are penetrated through the lower mold body.

[0010] The plurality of punches include a front row of punches and a rear row of punches, and the front row of punches and the rear row of punches are arranged alternately. The plurality of flanging concave holes include a front row of flanging concave holes and a rear row of flanging concave holes, and the front row of flanging concave holes and the rear row of flanging concave holes are arranged alternately.

[0011] The punches are integrally in a shape similar to a cylinder, and the cross-sections of the plurality of punches perpendicular to their own axes are all circular and have equal sizes. The axes of a plurality of the front row of punches are all arc lines, and the centers of the circular arc axes of the plurality of the front row of punches fall on a first straight line, and the first straight line is a horizontal straight line extending left and right behind the upper surface of the lower mold body. The axes of a plurality of the rear row of punches are all arc lines, and the centers of the circular arc axes of the plurality of the rear row of punches fall on a second straight line, and the second straight line is a horizontal straight line extending left and right behind the upper surface of the lower mold body.

[0012] The flanging concave holes are integrally in a shape similar to a cylindrical hole, and the cross-sections of the plurality of flanging concave holes perpendicular to their own axes are all circular and have equal sizes. The axes of a plurality of the front row of flanging concave holes are all arc lines, and the centers of the circular arc axes of the plurality of the front row of flanging concave holes fall on a third straight line, and the third straight line is a horizontal straight line extending left and right behind the upper surface of the lower mold body. The axes of a plurality of the rear row of flanging concave holes are all arc lines, and the centers of the circular arc axes of the plurality of the rear row of flanging concave holes fall on a fourth straight line, and the fourth straight line is a horizontal straight line extending left and right behind the upper surface of the lower mold body.

[0013] Wherein, the first straight line coincides with the third straight line, and the second straight line coincides with the fourth straight line.

[0014] Wherein, the size of the cross-section of the punch perpendicular to its own axis is smaller than the cross-section of the flanging concave hole perpendicular to its own axis.

[0015] As a further preferred technical solution of the present invention, the first straight line, the second straight line, the third straight line and the fourth straight line coincide.

[0016] Further, during the stamping process of the mold, the upper mold makes a circular arc movement relative to the lower mold, and the center of the circular arc movement falls on the first straight line.

[0017] An air conditioner outdoor unit fin, the air conditioner outdoor unit fin includes a fin body, the fin body has a plurality of fin holes for connecting heat exchange tubes, and the fin holes have flanges.

[0018] A plurality of the fin holes include front row fin holes and rear row fin holes, the front row fin holes and the rear row fin holes are arranged staggeredly, the front row fin holes have front flanges, and the rear row fin holes have rear flanges.

[0019] The flanges are in the shape of a quasi-cylindrical surface, and the cross-sections of the flanges perpendicular to their own axes are also circular and have equal sizes. The axes of a plurality of the front flanges are all arc lines, and the centers of the arc-shaped axes of a plurality of the front flanges fall on a fifth straight line, and the fifth straight line is a horizontal straight line extending left and right behind the lower surface of the fin body. The axes of a plurality of the rear flanges are all arc lines, and the centers of the arc-shaped axes of a plurality of the rear flanges fall on a sixth straight line, and the sixth straight line is a horizontal straight line extending left and right behind the lower surface of the fin body.

[0020] It should be noted that taking the rear flange and the arc-shaped pipe section of the inner heat exchange pipe of the J-shaped heat exchanger as an example, by setting the rear flange to be in the shape of a quasi-cylindrical surface, the cross-sections of the rear flange perpendicular to its own axis are also circular and have equal sizes, and the inner wall shape of the rear flange is the same as the outer wall shape of the arc-shaped pipe section of the corresponding inner heat exchange pipe of the J-shaped heat exchanger. Referring to the figure, the inner wall of the rear flange fits well with the outer wall of the arc-shaped pipe section of the corresponding inner heat exchange pipe of the J-shaped heat exchanger, and the contact area is increased.

[0021] The contact area between the front flange and the arc-shaped pipe section of the outer heat exchange pipe of the J-shaped heat exchanger is also the same, which will not be elaborated here.

[0022] As a further preferred technical solution of the present invention, the fifth straight line and the sixth straight line coincide.

[0023] The present invention has the following beneficial effects:

[0024] 1. The flange formed by stamping through the punch and the flanging concave hole is also in the shape of a curved cylindrical surface, the cross-sections of the flange perpendicular to its own axis are also circular and have equal sizes, and the axis of the flange is consistent with the arc-shaped axis of the corresponding punch. Therefore, the inner wall shape of the flange is the same as the outer wall shape of the arc-shaped pipe section of the heat exchange pipe of the corresponding J-shaped heat exchanger. After assembly, the inner wall of the flange fits well with the outer wall of the arc-shaped pipe section of the heat exchange pipe of the corresponding J-shaped heat exchanger, and the contact area is increased, thereby reducing the contact thermal resistance between the flange and the arc-shaped pipe section of the heat exchange pipe of the corresponding J-shaped heat exchanger and improving the heat exchange efficiency of the fin.

[0025] 2. The front flanging is formed by stamping with the front punch and the front flanging concave hole, and the rear flanging is formed by stamping with the rear punch and the rear flanging concave hole. The first straight line, the second straight line, the third straight line, and the fourth straight line coincide. The arc radius of the arc-shaped axis of the front flanging is greater than the arc radius of the arc-shaped axis of the rear flanging. The fin with the front flanging and the rear flanging can be applied to a J-shaped heat exchanger composed of two rows of inner and outer heat exchange tubes with different bending radians of the inner heat exchange tube and the outer heat exchange tube but the same tube spacing. The tube spacing of the two rows of inner and outer heat exchange tubes of the J-shaped heat exchanger remains unchanged, improving the uniformity of the temperature field distribution in the heat exchange area, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural diagram of a J-type heat exchanger in the prior art;

[0027] Figure 2 is Figure 1 a top view of the J-type heat exchanger in;

[0028] Figure 3 is Figure 2 a partially enlarged cross-sectional view at A in, showing only one heat exchange fin;

[0029] Figure 4 is Figure 3 a partially enlarged schematic view at B in;

[0030] Figure 5 a mold for manufacturing the fin of an air conditioner outdoor unit according to the present invention;

[0031] Figure 6 During the stamping process of the mold, the mold is along Figure 5 a cross-sectional structural schematic view of the mold along the C-C line in;

[0032] Figure 7 is Figure 6 a right view of the mold in;

[0033] Figure 8 an air conditioner outdoor unit fin provided by the present invention;

[0034] Figure 9 a cross-sectional structural schematic view of the heat exchange fin provided by the present invention and the circular arc pipe section of the J-shaped heat exchange pipe after assembly and along Figure 8 the D-D line in;

[0035] Figure 10 is Figure 9 a partially enlarged schematic view at E in.

[0036] In the figure: 111 is the upper die body, 121 is the lower die body, 1121 is the front row punch, 1122 is the rear row punch, 1221 is the front row flanging concave hole, and 1122 is the rear row flanging concave hole;

[0037] 21 is the fin body, 221 is the front row fin hole, 222 is the rear row fin hole, and 2221 is the rear row flanging;

[0038] 31 is the arc tube section of the inner heat exchange tube. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0041] Embodiment 1

[0042] Embodiment 1 of the present invention provides a fin mold for an air conditioner outdoor unit. As Figure 5 shown, the fin mold for the air conditioner outdoor unit includes: an upper die, the upper die includes an upper die body 111 and a plurality of punches arranged on the bottom surface of the upper die body 111; a lower die, the lower die includes a lower die body 121, and a plurality of flanging concave holes are provided through the lower die body 121.

[0043] The plurality of punches include a front row punch 1121 and a rear row punch 1122, and the front row punch 1121 and the rear row punch 1122 are arranged alternately. The plurality of flanging concave holes include a front row flanging concave hole 1221 and a rear row flanging concave hole 1222, and the front row flanging concave hole 1221 and the rear row flanging concave hole 1222 are arranged alternately.

[0044] Refer to Figures 6-7, the punch is in the shape of a curved cylinder, and the cross-sections of several of the punches perpendicular to their own axes are all circular and of equal size. The axes of several of the front row punches 1121 are all arc lines, and the centers of the circular arc axes of several of the front row punches 1121 fall on a first straight line, and the first straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body 121. The axes of several of the rear row punches 1122 are all arc lines, and the centers of the circular arc axes of several of the rear row punches 1122 fall on a second straight line, and the second straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body 121.

[0045] The flanging concave holes are in the shape of curved cylindrical holes, and the cross-sectional dimensions of several of the flanging concave holes perpendicular to their own axes are all circular and of equal size. The axes of several of the front row flanging concave holes 1221 are all arc lines, and the centers of the circular arc axes of several of the front row flanging concave holes 1221 fall on a third straight line, and the third straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body 121. The axes of several of the rear row flanging concave holes 1222 are all arc lines, and the centers of the circular arc axes of several of the rear row flanging concave holes 1222 fall on a fourth straight line, and the fourth straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body 121.

[0046] Among them, the first straight line coincides with the third straight line, and the second straight line coincides with the fourth straight line.

[0047] Among them, the size of the cross-section of the punch perpendicular to its own axis is smaller than the size of the cross-section of the flanging concave hole perpendicular to its own axis.

[0048] It can be understood that the flanging obtained by stamping through the punch and the flanging concave hole is also in the shape of a curved cylindrical surface, and the cross-sections of the flanging perpendicular to their own axes are also all circular and of equal size, and the axis of the flanging is consistent with the circular arc axis of the corresponding punch. Therefore, the inner wall shape of the flanging is the same as the outer wall shape of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger. After assembly, the inner wall of the flanging fits well with the outer wall of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger, and the contact area increases, thereby reducing the contact thermal resistance between the flanging and the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger and improving the heat exchange efficiency of the fin.

[0049] As a further preferred technical solution of the present invention, the first straight line, the second straight line, the third straight line and the fourth straight line coincide.

[0050] It can be understood that the front flanging is formed by stamping with the front punch 1121 and the front flanging concave hole 1221, and the rear flanging is formed by stamping with the rear punch 1122 and the rear flanging concave hole 1222. The first straight line, the second straight line, the third straight line, and the fourth straight line coincide. The arc radius of the arc-shaped axis of the front flanging is greater than the arc radius of the arc-shaped axis of the rear flanging. The fin with the front flanging and the rear flanging can be applied to a J-shaped heat exchanger composed of two rows of inner and outer heat exchange tubes with different bending radians of the inner heat exchange tube and the outer heat exchange tube but the same tube body spacing. The tube body spacing of the two rows of inner and outer heat exchange tubes of the J-shaped heat exchanger remains unchanged, improving the uniformity of the temperature field distribution in the heat exchange area, thereby improving the heat exchange efficiency.

[0051] Further, during the stamping process of the mold, the upper mold moves in a circular arc relative to the lower mold, and the center of the circular arc movement falls on the first straight line.

[0052] Embodiment 2

[0053] Embodiment 2 of the present invention provides a fin for an air conditioner outdoor unit, as Figure 8 shown. The fin for the air conditioner outdoor unit includes a fin body 21. The fin body 21 has a plurality of fin holes for connecting heat exchange tubes, and the fin holes have flangings.

[0054] A plurality of the fin holes include front row fin holes 221 and rear row fin holes 222. The front row fin holes 221 and the rear row fin holes 222 are arranged in an alternating manner. The flanging of the front row fin holes 221 is the front flanging, and the flanging of the rear row fin holes 222 is the rear flanging 2221.

[0055] Referring to Figures 9-10 , the flanging is in the shape of a curved cylindrical surface. The cross-sections perpendicular to the axis of the flanging are all circular and have the same size. The axes of a plurality of the front flangings are all arc lines, and the centers of the arc-shaped axes of a plurality of the front flangings fall on a fifth straight line. The fifth straight line is a horizontal straight line extending left and right behind the lower surface of the fin body 21. The axes of a plurality of the rear flangings 2221 are all arc lines, and the centers of the arc-shaped axes of a plurality of the rear flangings 2221 fall on a sixth straight line. The sixth straight line is a horizontal straight line extending left and right behind the lower surface of the fin body 21.

[0056] It should be noted that taking the rear flanging 2221 and the arc-shaped tube section 31 of the inner heat exchange tube of the J-shaped heat exchanger as an example, by setting the rear flanging 2221 to be in the shape of a curved cylindrical surface, the cross-sections perpendicular to the axis of the rear flanging 2221 are also all circular and have the same size, and the inner wall shape of the rear flanging 2221 is the same as the outer wall shape of the arc-shaped tube section 31 of the corresponding inner heat exchange tube of the J-shaped heat exchanger. Referring toFigure 10 The inner wall of the rear flanging 2221 fits well with the outer wall of the arc tube section 31 of the inner heat exchange tube of the corresponding J-shaped heat exchanger, increasing the contact area.

[0057] The contact area between the front flanging and the arc tube section of the outer heat exchange tube of the J-shaped heat exchanger is the same, which will not be elaborated here.

[0058] It can be understood that by setting the flanging as a curved cylindrical surface, the cross-section of the flanging perpendicular to its own axis is also circular and has the same size. The shape of the inner wall of the flanging is the same as the shape of the outer wall of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger. After assembly, the inner wall of the flanging fits well with the outer wall of the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger, increasing the contact area, thereby reducing the contact thermal resistance between the flanging and the arc tube section of the heat exchange tube of the corresponding J-shaped heat exchanger and improving the heat exchange efficiency of the fin.

[0059] As a further preferred technical solution of the present invention, the fifth straight line coincides with the sixth straight line.

[0060] It can be understood that the fifth straight line coincides with the sixth straight line, the arc radius of the circular arc axis of the front flanging is greater than the arc radius of the circular arc axis of the rear flanging 2221, and the fin can be applied to a J-shaped heat exchanger composed of two rows of inner and outer heat exchange tubes with different bending radians of the inner heat exchange tube and the outer heat exchange tube but the same tube spacing. The tube spacing of the two rows of inner and outer heat exchange tubes of the J-shaped heat exchanger remains unchanged, improving the uniformity of the temperature field distribution in the heat exchange area, thereby improving the heat exchange efficiency.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An outdoor unit fin mold of an air conditioner, characterized in that The die includes an upper die and a lower die. The upper die includes an upper die body (111) and a plurality of punches arranged on the bottom surface of the upper die body (111). The lower die includes a lower die body (121). The plurality of punches include a front row of punches (1121) and a rear row of punches (1122), and the front row of punches (1121) and the rear row of punches (1122) are arranged alternately. The punches are in the shape of a curved cylinder. The cross-sections of the plurality of punches perpendicular to their own axes are all circular and of equal size. The axes of the plurality of front row punches (1121) are all arc lines, and the centers of the circular arc axes of the plurality of front row punches (1121) fall on a first straight line, and the first straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body (121). The axes of the plurality of rear row punches (1122) are all arc lines, and the centers of the circular arc axes of the plurality of rear row punches (1122) fall on a second straight line, and the second straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body (121). A plurality of flanging concave holes are provided through the lower die body (121). The plurality of flanging concave holes include a front row of flanging concave holes (1221) and a rear row of flanging concave holes (1222), and the front row of flanging concave holes (1221) and the rear row of flanging concave holes (1222) are arranged alternately. The flanging concave holes are in the shape of a curved cylindrical hole. The cross-sectional dimensions of the plurality of flanging concave holes perpendicular to their own axes are all circular and of equal size. The axes of the plurality of front row flanging concave holes (1221) are all arc lines, and the centers of the circular arc axes of the plurality of front row flanging concave holes (1221) fall on a third straight line, and the third straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body (121). The axes of the plurality of rear row flanging concave holes (1222) are all arc lines, and the centers of the circular arc axes of the plurality of rear row flanging concave holes (1222) fall on a fourth straight line, and the fourth straight line is a horizontal straight line extending left and right behind the upper surface of the lower die body (121).

2. The fin mold of the outdoor unit of the air conditioner according to claim 1, characterized in that The first straight line coincides with the third straight line, and the second straight line coincides with the fourth straight line.

3. The fin mold for the outdoor unit of an air conditioner according to claim 2, characterized in that, The size of the cross-section of the punch perpendicular to its own axis is smaller than the size of the cross-section of the flanging concave hole perpendicular to its own axis.

4. The fin mold for an air conditioner outdoor unit according to claim 2, wherein The first straight line, the second straight line, the third straight line, and the fourth straight line coincide.

5. The fin die of the air conditioner outdoor unit according to claim 4, characterized in that, During the stamping process of the die, the upper die moves in a circular arc relative to the lower die, and the center of the circular arc movement falls on the first straight line.

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