Method for processing a heat exchanger and pressing device for processing a heat exchanger

Abstract

A method for processing a heat exchanger and a pressing device for processing a heat exchanger are provided, the method for processing a heat exchanger comprising the steps of: preparing a heat exchanger, in which a bent segment of one heat exchange tube of the heat exchanger contacts at least a portion of a bent segment of another heat exchange tube adjacent to the first tube in the longitudinal direction, disposing a pressing member such that at least a portion of the pressing member contacts at least a portion of the bent segment of at least one heat exchange tube, and moving the pressing member to rotate the bent segment by a predetermined angle or move a predetermined distance with respect to the first segment to which it is connected, and / or moving the bent segment of the heat exchange tube to rotate the bent segment by a predetermined angle or move a predetermined distance with respect to the first segment to which it is connected, thereby preventing the bent segment of one heat exchange tube from contacting the bent segment of the heat exchange tube adjacent to the first tube in the longitudinal direction.

Description

Technical Field

[0001] [Cross - reference to Related Applications] This application claims priority to a Chinese patent application No. 202110413029.2, filed in China on April 16, 2021, and all of its contents are incorporated herein by reference.

[0002] The present disclosure relates to the field of heat exchange technology, and specifically, to a processing method of a heat exchanger and a pressing device for processing the heat exchanger.

Background Art

[0003] Micro - channel heat exchangers are widely used in the air - conditioning field. In related technologies, a micro - channel heat exchanger includes a plurality of heat exchange tubes. To increase the heat exchange area, the heat exchange tubes are twisted and bent to form a heat exchanger with two or more rows. Therefore, local overlapping or superposition of heat exchange tubes occurs at the bent portions of adjacent heat exchange tubes. After the heat exchanger is used, dust and moisture in the air enter the portions where they overlap and contact the heat exchange tubes, accelerating the corrosion of the heat exchange tubes in this part and affecting the reliability of the heat exchange tubes. In related technologies, it is necessary to increase the distance between adjacent heat exchange tubes so that the bent portions of the heat exchange tubes do not contact. Within a limited heat exchange area, increasing the distance between adjacent heat exchange tubes reduces the number of heat exchange tubes, affecting the heat exchange performance.

Summary of the Invention

[0004] Therefore, the embodiments of the present disclosure provide a processing method of a heat exchanger. This processing method of the heat exchanger enables the bent segment of one heat exchange tube not to contact the bent segment of an adjacent other heat exchange tube, and without increasing the distance between adjacent heat exchange tubes, which is advantageous for improving the reliability and heat exchange performance of the heat exchanger.

[0005] Embodiments of the present disclosure further provide a pressing device for processing a heat exchanger. The pressing device can rotate a bending segment by a predetermined angle with respect to a first segment connected thereto, or move it by a predetermined distance, so that the bending segment of one heat exchange tube does not contact the bending segment of the other adjacent heat exchange tube.

[0006] The method for processing a heat exchanger according to an embodiment of the present disclosure includes the step of providing the heat exchanger, where the heat exchanger includes a first tube, a second tube, and heat exchange tubes. The heat exchange tubes communicate the first tube and the second tube. The heat exchange tubes include a first segment, a second segment, and a bending segment. One end of the bending segment is connected to the first segment, and the other end of the bending segment is connected to the second segment. The bending segment of the heat exchange tube includes a torsion segment. There are a plurality of the heat exchange tubes. The first segments of the plurality of heat exchange tubes are provided at intervals along the longitudinal direction of the first tube. The second segments of the plurality of heat exchange tubes are provided at intervals along the longitudinal direction of the first tube. Before processing the heat exchanger, the bending segment of one of the heat exchange tubes contacts at least a part of the bending segment of the other heat exchange tube adjacent in the longitudinal direction of the first tube. The step of arranging a pressing member so that at least a part of the pressing member contacts at least a part of the bending segment of at least one of the heat exchange tubes. Moving the pressing member so that the bending segment is rotated by a predetermined angle with respect to the first segment to which it is connected, or moved by a predetermined distance, and / or moving the bending segment of the heat exchange tube so that the bending segment is rotated by a predetermined angle with respect to the first segment to which it is connected, or moved by a predetermined distance, so that the bending segment of one of the heat exchange tubes after processing does not contact the bending segment of the heat exchange tube adjacent in the longitudinal direction of the first tube.

[0007] According to the method for processing a heat exchanger according to an embodiment of the present disclosure, by using a pressing member to prevent the bent segment of one heat exchange tube from contacting the bent segment of the adjacent other heat exchange tube, it is possible to reduce the accumulation of dust and moisture in the air in the twisted segment of the bent segment, mitigate the corrosion of the heat exchange tube, which is advantageous for improving the reliability of the heat exchanger. Further, since the distance between adjacent heat exchange tubes does not increase, it is advantageous for improving the heat exchange performance of the heat exchanger.

[0008] Thereby, the method for processing a heat exchanger according to an embodiment of the present disclosure is advantageous for improving the reliability and heat exchange performance of the heat exchanger.

[0009] In some embodiments, the twisted segment is formed by twisting at least a part of the bent segment of the heat exchange tube with respect to the first segment of the heat exchange tube, and the pressing member moves to change the longitudinal position of the pressing member and a part of the bent segment of the first tube.

[0010] In some embodiments, the heat exchange tube includes a first side surface and a second side surface installed along a first direction, and the heat exchange tube includes a third side surface and a fourth side surface installed along a second direction. During movement, the pressing member contacts a part of the third side surface of at least one of the bent segments, and rotates the bent segment by a predetermined angle or moves it by a predetermined distance with respect to the first segment to which the bent segment is connected.

[0011] In some embodiments, during movement, the pressing member contacts a part of the second side surface of at least one of the bent segments, and rotates the bent segment by a predetermined angle or moves it by a predetermined distance with respect to the first segment to which the bent segment is connected.

[0012] In some embodiments, during movement, the pressing member simultaneously contacts a plurality of the bent segments, and rotates the plurality of bent segments by a predetermined angle or moves them by a predetermined distance with respect to the first segments to which the plurality of bent segments are respectively connected.

[0013] In some embodiments, the pressing member includes a rotating portion and a shaft, the rotating portion includes at least a partial circumferential surface, and during the movement of the pressing member, the circumferential surface of the rotating portion contacts a portion of the bent segment of at least one of the heat exchange tubes.

[0014] In some embodiments, during the movement of the pressing member, the rotating portion rotates around the axis of the shaft, and the rotation direction of the rotating portion is opposite to the rotation direction with respect to the first segment to which the bent segment is connected.

[0015] In some embodiments, during the movement of the pressing member, the rotation direction of the rotating portion is opposite to the movement direction of the pressing member.

[0016] In some embodiments, the heat exchange tube is a microchannel flat tube.

[0017] A pressing device for processing a heat exchanger, the heat exchanger includes a heat exchange tube, the heat exchange tube includes a first segment, a second segment and a bent segment, one end of the bent segment is connected to the first segment, the other end of the bent segment is connected to the second segment, the pressing device presses the bent segment of the heat exchange tube to rotate by a predetermined angle or move by a predetermined distance, the pressing device includes a pressing member, the pressing member includes an outer surface, and the surface hardness of at least a part of the outer surface is not higher than the surface hardness of the heat exchange tube.

[0018] According to the pressing device for the processing of the heat exchanger of the embodiment of the present disclosure, the bending segment of the heat exchange tube of the heat exchanger is rotated by a predetermined angle with respect to the connected first segment, or moved by a predetermined distance, so that the heat exchange tube is pressed, rotated or moved, and thus the bending segment of one heat exchange tube can be prevented from contacting the bending segment of the adjacent other heat exchange tube. Therefore, it is possible to reduce the accumulation of dust and moisture in the air in the torsion segment of the bending segment of the heat exchange tube and alleviate the corrosion of the heat exchange tube.

[0019] In addition, the surface hardness of the outer surface of the pressing member is equal to or lower than the surface hardness of the heat exchange tube, so that it is possible to avoid the heat exchange tube being crushed and deformed or scratched on the surface.

[0020] Thereby, the pressing device for the processing of the heat exchanger of the embodiment of the present disclosure can alleviate the corrosion of the heat exchange tube, which is advantageous for improving the reliability and heat exchange performance of the heat exchange tube.

[0021] In some embodiments, the outer surface of the pressing member includes an arc surface or an inclined surface, and the surface hardness of at least a part of the arc surface or the inclined surface is equal to or lower than the surface hardness of the heat exchange tube.

[0022] In some embodiments, the heat exchange tube includes a first side surface and a second side surface installed along a first direction, the heat exchange tube includes a third side surface and a fourth side surface installed along a second direction, the pressing member includes an arc surface and a flat surface, the arc surface of the pressing member contacts the third side surface of the bending segment, and the pressing member can rotate the bending segment by a predetermined angle with respect to the connected first segment or move it by a predetermined distance.

[0023] In some embodiments, the pressing member includes a circular member including a circumferential surface and a first hole, and a shaft located in the first hole, and the circumferential surface is symmetrically provided around the shaft.

[0024] In some embodiments, the circular member is connected to the shaft, and the circumferential surface of the circular member can contact a portion of the bent segment of at least one of the heat exchange tubes.

[0025] In some embodiments, the pressing member further includes protrusions, the protrusions are connected to the circumferential surface and are located outside the circumferential surface, there are a plurality of the protrusions, and the plurality of protrusions are provided at intervals along the circumferential direction of the circumferential surface.

[0026] In some embodiments, the heat exchange tube includes a first side surface and a second side surface installed along a first direction, the heat exchange tube further includes a third side surface and a fourth side surface installed along a second direction, and one side of the protrusion of the pressing member can contact the third side surface of the bent segment.

[0027] In some embodiments, the pressing member further includes a supporting member, and both ends of the shaft are connected to the supporting member.

[0028] In some embodiments, the bent segment of the heat exchange tube includes a torsion segment, there are a plurality of the heat exchange tubes, the first segments of the plurality of heat exchange tubes are provided at intervals along the longitudinal direction of the first tube, the second segments of the plurality of heat exchange tubes are provided at intervals along the longitudinal direction of the first tube, before processing the heat exchanger, the bent segment of one of the heat exchange tubes contacts at least a part of the bent segment of the other heat exchange tube adjacent to the first tube in the longitudinal direction of the first tube, when the pressing member moves, the circular member can rotate around the axis of the shaft, and the rotation direction of the circular member is opposite to the rotation direction of the first segment of the heat exchange tube of the bent segment.

[0029] In some embodiments, the position of the tip of the pressing member is higher than the position of the lower end of the bent segment of the heat exchange tube.

[0030] In some embodiments, the distance D between the tip of the pressing member and the lower end of the bent segment of the heat exchange tube is greater than or equal to the vertical movement distance B of the bottom of the bent segment.

Brief Description of the Drawings

[0031]

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Mode for Carrying Out the Invention

[0032] Embodiments of the present disclosure will be described in detail below. These embodiments are shown in the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are for explaining the present disclosure, and it should not be understood as limiting the present disclosure.

[0033] As shown in FIGS. 1-14, according to the method for processing a heat exchanger of the embodiment of the present disclosure, the following steps are included.

[0034] Prepare a heat exchanger 100, which includes a first pipe 11, a second pipe 12, and heat exchange pipes 20. The heat exchange pipes 20 are microchannel flat pipes. The heat exchange pipes 20 communicate the first pipe 11 and the second pipe 12. The heat exchange pipes 20 include a first segment 21, a second segment 22, and a bent segment 23. One end of the bent segment 23 is connected to the first segment 21, and the other end of the bent segment 23 is connected to the second segment 22. There are multiple heat exchange pipes 20, and the multiple heat exchange pipes 20 are provided at intervals along the longitudinal direction of the first pipe 11. The bent segment 23 of one heat exchange pipe 20 contacts at least a part of the bent segment 23 of the other heat exchange pipe 20 adjacent to it in the longitudinal direction (left - right direction in FIG. 1) of the first pipe 11. As shown in FIGS. 1 and 2, the first segments 21 of the multiple heat exchange pipes 20 are provided at intervals along the longitudinal direction of the first pipe 11, and the second segments 22 of the multiple heat exchange pipes 20 are provided at intervals along the longitudinal direction of the first pipe 11. The bent segment 23 of the heat exchange pipe 20 includes a twisted segment 231, and the twisted segment 231 is formed by at least a part of the bent segment 23 of the heat exchange pipe 20 being twisted with respect to the first segment 21 of the heat exchange pipe 20. Specifically, at least a part of the bent part 23 of the heat exchange pipe 20 is twisted to the left with respect to the first segment 21 to form the twisted segment 231, and the twisted segment 231 of the bent segment 23 of one heat exchange pipe 20 contacts at least a part of the twisted segment 231 of the bent segment 23 of the adjacent other heat exchange pipe 20. Specifically, the first pipe 11 and the second pipe 12 are the header pipes 10 of the heat exchanger 100. The heat exchanger 100 further includes side plates 30 provided on both the left and right sides of the heat exchanger 100 and fins 40 connected to the heat exchange pipes 20. The arrangement method of the fins 40 is selected according to the type and use scene of the heat exchanger 100.

[0035] The pressing member 50 is arranged such that at least a part of the pressing member 50 contacts at least a part of the bending segment 23 of at least one heat exchange tube 20. Specifically, as shown in FIGS. 5, 7, 9, and 11, the pressing member 50 is arranged below the heat exchanger 100, the top of the pressing member 50 contacts the bottom of the bending segment 23 of the heat exchange tube 20, and the position of the tip of the pressing member 50 is higher than the position of the lower end of the bending segment 23 of the heat exchange tube 20. That is, the top of the pressing member 50 contacts at least the right side of the bottom of the bending segment 23. Therefore, when at least a part of the pressing member 50 and the heat exchange tube 20 move relative to each other in the longitudinal direction of the first tube 11, the bending segment 23 can rotate by a predetermined angle with respect to the connected first segment 21 or move by a predetermined distance.

[0036] Move the pressing member 50 so as to rotate the bending segment 23 by a predetermined angle with respect to the connected first segment 21 or move it by a predetermined distance, and / or Move the bending segment 23 of the heat exchange tube 20 so as to rotate the bending segment 23 by a predetermined angle with respect to the connected first segment 21 or move it by a predetermined distance, that is, the bending segment 23 of the heat exchanger 100 changes its longitudinal position in the first tube 11. As a whole, the pressing member 50 and the bending segment 23 of the heat exchange tube 20 are moved relative to each other in the longitudinal direction of the first tube 11. Thereby, the bending segment 23 of one heat exchange tube 20 is prevented from contacting the bending segment 23 of the heat exchange tube 20 adjacent in the longitudinal direction of the first tube 11. That is, there is a gap between the bending segment 23 of one heat exchange tube 20 and the bending segment 23 of one or two heat exchange tubes 20 adjacent in the longitudinal direction of the first tube 11.

[0037] Note that the movement of the pressing member 50 includes translation and rotation. That is, the pressing member 50 can be rotated by a predetermined angle with respect to the first segment 21 to which the bending segment 23 is connected, or can be rotated so as to move by a predetermined distance, and the pressing member 50 can be rotated by a predetermined angle with respect to the first segment 21 to which the bending segment 23 is connected, or can also be translated so as to move by a predetermined distance.

[0038] As shown in FIGS. 3 and 4, while the bending segment 23 rotates by an angle A with respect to the first segment 21, the bottom of the bending segment 23 moves by a distance B in the vertical direction and moves by a distance C in the horizontal direction.

[0039] The pressing member 50 moves and translates in the longitudinal direction of the first tube 11. That is, the position of the pressing member 50 in the longitudinal direction (the left - right direction in FIG. 1) of the first tube 11 changes, and the bending segments 23 of the plurality of heat - exchange tubes 20 of the heat exchanger 100 rotate by a predetermined angle sequentially or move by a predetermined distance with respect to the first segments 21 connected thereto.

[0040] According to the processing method of the heat exchanger of the embodiment of the present disclosure, since the pressing member 50 and the bending segment 23 of the heat - exchange tube 20 move relatively, and the bending segment 23 of one heat - exchange tube 20 does not contact the bending segment 23 of the adjacent other heat - exchange tube 20, it is possible to reduce the accumulation of dust and moisture in the air in the torsion segment 231 of the bending segment 23, mitigate the corrosion of the heat - exchange tube 20, which is advantageous for improving the heat - exchange performance of the heat exchanger 100.

[0041] Thereby, the processing method of the heat exchanger of the embodiment of the present disclosure is advantageous for improving the reliability and heat - exchange performance of the heat exchanger 100.

[0042] In some embodiments, as shown in FIGS. 3 and 4, the heat exchange tube 20 includes a first side surface and a second side surface installed along a first direction, and the heat exchange tube 20 includes a third side surface and a fourth side surface installed along a second direction. Note that in the first segment 21 and the second segment 22 of the heat exchange tube 20, the first direction is the thickness direction (the left-right direction in FIG. 1) of the first segment 21, the second direction is the width direction of the first segment 21, the first side surface, the second side surface, the third side surface, and the fourth side surface are flat surfaces. In the bent segment 23 and the twisted segment 231 of the heat exchange tube 20, the first direction and the second direction are not fixed, the first direction and the second direction change according to the twist of the bent segment 23, and the first side surface, the second side surface, the third side surface, and the fourth side surface are curved surfaces. Specifically, the projections of the first side surface, the second side surface, the third side surface, and the fourth side surface on the cross-section of the heat exchange tube 20 surround the outer peripheral contour of the cross-section of the heat exchange tube 20. As an example, in FIG. 4, the first side surface of the torsion segment 231 is substantially upward, the second side surface of the torsion segment 231 is substantially downward, the third side surface of the torsion segment 231 is substantially rightward, and the fourth side surface of the torsion segment 231 is substantially leftward.

[0043] As shown in FIGS. 5-12, during movement, the pressing member 50 contacts a part of the third side surface of at least one bent segment 23, and rotates the bent segment 23 by a predetermined angle with respect to the first segment 21 to which the bent segment 23 is connected, or moves it by a predetermined distance.

[0044] As shown in FIGS. 5-10 and FIGS. 15-17, the pressing member 50 has an arc surface 51, the pressing member 50 moves forward from right to left, and during the movement of the pressing member 50, the arc surface 51 of the pressing member 50 contacts the third side surface of the bent segment 23, and rotates the bent segment 23 by a predetermined angle with respect to the first segment 21 to which the bent segment 23 is connected, or moves it by a predetermined distance.

[0045] The position of the tip of the pressing member 50 is higher than the position of the lower end of the bent segment 23 of the heat exchange tube 20, and the distance between the tip of the pressing member 50 and the lower end of the bent segment 23 of the heat exchange tube 20 is D. Note that D is greater than or equal to B, the value of B can be increased by increasing the number of times the pressing member 50 moves forward from right to left, and the value of B can also be increased by increasing the value of D.

[0046] In some embodiments, as shown in FIGS. 7, 8, and 16, the pressing member 50 includes a rotating portion and a shaft 502. The rotating portion includes at least a partial circumferential surface, and the circumferential surface of the rotating portion is in contact with a portion of the bent segment 23 of at least one heat exchange tube 20.

[0047] According to the method for manufacturing a heat exchanger of an embodiment of the present disclosure, after the contact portion between the circumferential surface of the rotating portion and the bent segment 23 wears, the rotating portion can rotate by a certain angle around the axis of the shaft 502, eliminating the need to replace the pressing member 50, enabling the continuous manufacturing of the heat exchanger 100, improving the service life of the pressing member 50, and also improving the manufacturing efficiency.

[0048] Furthermore, as shown in FIGS. 9, 10, and 17, while the pressing member 50 is moving, the rotating portion can rotate around the axis of the shaft 502, and the rotation direction of the rotating portion is opposite to the rotation direction with respect to the first segment 21 to which the bent segment 23 is connected. It should be noted that when the rotating portion rotates counterclockwise, the pressing member 50 moves from right to left, and the rotation direction of the rotating portion is the same as the moving direction of the entire pressing member 50.

[0049] According to the method for manufacturing a heat exchanger of an embodiment of the present disclosure, while the pressing member 50 moves in the longitudinal direction of the first tube 11, the rotating portion is rotationally driven around the axis of the shaft 502 by an external force, and the rotation direction of the rotating portion is the same as the moving direction of the pressing member 50. Therefore, the manufacturing efficiency can be improved, and the horizontal thrust on the heat exchange tube 20 when the pressing member 50 moves is reduced, improving the deformation of the heat exchanger 100.

[0050] As shown in FIGS. 11, 12, and 18, the pressing member 50 includes a circular member 501 and a protrusion 504. The circular member 501 is rotatable about its axis. The protrusion 504 is provided on the outer peripheral surface of the circular member 501. There are a plurality of protrusions 504, and the plurality of protrusions 504 are provided at intervals along the circumferential direction of the circular member 501. When the circular member 501 rotates counterclockwise, the pressing member 50 moves forward from left to right. That is, the rotation direction of the circular member 501 is opposite to the moving direction of the pressing member 50. During the movement of the pressing member 50, the protrusion 504 of the pressing member 50 contacts the third side surface of the bent segment 23.

[0051] The position of the tip of the pressing member 50 is higher than the position of the lower end of the bent segment 23 of the heat exchange tube 20, and the distance between the tip of the pressing member 50 and the lower end of the bent segment 23 of the heat exchange tube 20 is D. Note that D is less than or equal to B. The value of B can be increased by increasing the number of times the pressing member 50 moves forward from left to right, and the value of B can also be increased by increasing the value of D.

[0052] According to the processing method of the heat exchanger of the embodiment of the present disclosure, the protrusion 504 of the pressing member 50 contacts the third side surface of the bent segment 23. Due to the rotation of the circular member 501, the protrusion 504 rotates the bent segment 23 by a predetermined angle or moves it by a predetermined distance with respect to the first segment 21 to which the bent segment 23 is connected. Since the circular member 501 rotates counterclockwise and the pressing member 50 moves forward from left to right, during one forward movement of the pressing member 50, the rotation angles and moving distances of the bent segments 23 of each heat exchange tube 20 are equal, which is advantageous for improving the appearance of the heat exchanger 100. In addition, since the heat exchange tube 20 does not receive a horizontal thrust, the deformation of the heat exchanger 100 can be improved, that is, the amount of deformation of the heat exchanger 100 can be reduced.

[0053] In some embodiments, as shown in FIGS. 13 and 14, during movement, the pressing member 50 also contacts a part of the second side surface of at least one bent segment 23 and rotates the bent segment 23 by a predetermined angle or moves it by a predetermined distance with respect to the first segment 21 to which the bent segment 23 is connected.

[0054] Specifically, the pressing member 50 is made of a flexible material. The pressing member 50 contacts the bending segment 23 from bottom to top, presses the pressing member 50, deforms the upper surface of the pressing member 50, and makes it contact the second side surface of the bending segment 23. The pressing member 50 moves from right to left, and rotates the bending segment 23 by a predetermined angle with respect to the first segment 21 to which the bending segment 23 is connected by frictional force, or moves it by a predetermined distance.

[0055] Furthermore, during movement, the pressing member 50 simultaneously contacts a plurality of bending segments 23, and rotates the plurality of bending segments 23 by a predetermined angle with respect to the first segment 21 to which each bending segment 23 is connected, or moves it by a predetermined distance.

[0056] According to the processing method of the heat exchanger of the embodiment of the present disclosure, during movement, the pressing member 50 can rotate the bending segment 23 by a predetermined angle with respect to the first segment 21 to which the bending segment 23 is connected, or move it by a predetermined distance. There is no need for positioning, the processing process is simplified, and the processing efficiency can be improved.

[0057] Hereinafter, with reference to the drawings, a pressing device for processing a heat exchanger according to an embodiment of the present disclosure will be described.

[0058] As shown in FIGS. 15-20, according to the pressing device for processing a heat exchanger of the embodiment of the present disclosure, this pressing device is for pressing the heat exchange tube 20 to rotate or move. The pressing device includes a pressing member 50. The pressing member 50 includes an outer surface, and the surface hardness of at least a part of the outer surface is not higher than the surface hardness of the heat exchange tube 20.

[0059] Furthermore, the pressing member includes an arc surface 51 or an inclined surface, and the surface hardness of at least a part of the arc surface 51 or the inclined surface is not higher than the surface hardness of the heat exchange tube 20.

[0060] Since the arc surface 51 or the inclined surface of the pressing member can contact the heat exchange tube 20, the bending segment 23 of the heat exchange tube 20 can be rotated by a predetermined angle with respect to the first segment 21 of the heat exchange tube 20, or pressed to move by a predetermined distance.

[0061] As shown in FIGS. 5-12, the position of the tip of the pressing member 50 is higher than the position of the lower end of the bending segment 23 of the heat exchange tube 20, and the distance between the tip of the pressing member 50 and the lower end of the bending segment 23 of the heat exchange tube 20 is D. Note that D is greater than or equal to B, and the value of B can be increased by increasing the number of times the pressing member 50 moves from right to left, and the value of B can also be increased by increasing the value of D.

[0062] According to the pressing device for processing the heat exchanger of the embodiment of the present disclosure, by moving the pressing member or moving the heat exchanger, the bending segment 23 of the heat exchange tube 20 of the heat exchanger 100 can be rotated by a predetermined angle with respect to the first segment 21 to which it is connected, or moved by a predetermined distance, so that the bending segment 23 of one heat exchange tube 20 does not contact the bending segment 23 of the adjacent other heat exchange tube 20. Therefore, it is possible to reduce the accumulation of dust and moisture in the air in the torsion segment 231 of the bending segment 23 of the heat exchange tube 20, alleviate the corrosion of the heat exchange tube, and is advantageous for improving the reliability of the heat exchange tube.

[0063] Note that since the surface hardness of the outer surface of the pressing member 50 is less than or equal to the surface hardness of the heat exchange tube 20, it is possible to avoid the heat exchange tube 20 from being crushed and deformed or scratched on the surface, which is advantageous for improving the reliability of the heat exchange tube.

[0064] Thereby, the pressing device for processing the heat exchanger of the embodiment of the present disclosure can reduce the accumulation of dust and moisture in the air in the torsion segment 231 of the bending segment 23 of the heat exchange tube 20 of the heat exchanger 100, and can avoid the heat exchange tube 20 from being crushed and deformed or scratched on the surface, which is advantageous for improving the reliability of the heat exchange tube.

[0065] As shown in FIGS. 5, 6 and 15, the pressing member 50 has an arc surface 51 and a flat surface 52. As the pressing member 50 advances from right to left, during the movement of the pressing member 50, the arc surface 51 of the pressing member 50 contacts the third side surface of the bending segment 23, causing the bending segment 23 to rotate by a predetermined angle or move by a predetermined distance with respect to the first segment 21 to which the bending segment 23 is connected. Even after the bending segment 23 rotates by a predetermined angle or moves by a predetermined distance, the flat surface 52 above the pressing member 50 can contact the bending segment 23, and to a certain extent, prevent the return of the bending segment 23.

[0066] In some embodiments, as shown in FIGS. 7-10, 16 and 17, the pressing member 50 of the pressing device for processing the heat exchanger according to the embodiments of the present disclosure includes a circular member 501 and a shaft 502. At least a part of the outer peripheral surface of the circular member 501 is formed as an arc surface 51. The circular member 501 has a shaft hole (i.e., the first hole), and the circular member 501 is sleeved on the shaft 502.

[0067] As shown in FIGS. 7, 8 and 16, the circular member 501 and the shaft 502 are fixedly connected. The circumferential surface of the circular member 501 contacts a part of the bending segment 23 of at least one heat exchange tube 20. After the contact part between the circumferential surface of the circular member 501 and the bending segment 23 wears, the circular member 501 can rotate by a certain angle around the axis of the shaft 502, eliminating the need to replace the pressing member 50, enabling the processing of the heat exchanger 100 to continue, improving the service life of the pressing member 50, and also improving the processing efficiency.

[0068] As shown in FIGS. 9, 10, and 17, the circular member 501 can rotate around its axis with respect to the shaft 502, and both ends of the shaft 502 are connected to the support member 503. During the movement of the pressing member 50, the circular member 501 rotates around the axis of the shaft 502, and the rotation direction of the circular member 501 is opposite to the rotation direction with respect to the first segment 21 to which the bending segment 23 is connected. Note that the circular member 501 rotates counterclockwise, the pressing member 50 moves from right to left, and the rotation direction of the rotating portion is the same as the moving direction of the entire pressing member 50. Therefore, the pressing member 50 can improve the processing efficiency of the heat exchanger 100. Also, when the pressing member 50 moves, the horizontal thrust on the heat exchange tube 20 becomes smaller, and the deformation of the heat exchanger 100 can be improved, that is, the amount of deformation of the heat exchanger 100 can be reduced.

[0069] In some embodiments, as shown in FIGS. 11, 12, and 18, the pressing member 50 of the pressing device for processing the heat exchanger according to the embodiments of the present disclosure includes a circular member 501, a shaft 502, and a protrusion 504.

[0070] The circular member 501 includes a circumferential surface and a first hole (not shown). The shaft 502 is located within the first hole, and the circumferential surface of the circular member 501 is provided symmetrically around the shaft 502. That is, the shaft 502 fits into the first hole, and the distance between the center line of the shaft 502 and each location on the circumferential surface of the circular member 501 is equal. In other words, the outer peripheral contour obtained by projecting the shaft 502 onto one end surface of the circular member 501 is the first circle, the projection of the circumferential surface of the circular member 501 onto the end surface is the second circle, and the first circle and the second circle are concentric.

[0071] The protrusions 504 are connected to the circumferential surface of the circular member 501 and are located outside the circumferential surface. There are a plurality of protrusions 504, and the plurality of protrusions 504 are provided at intervals along the circumferential direction of the circumferential surface of the circular member 501. Note that the outside of this circumferential surface is the side away from the shaft 502 of the circumferential surface.

[0072] When operating the pressing device for processing the heat exchanger according to an embodiment of the present disclosure, the circular member 501 rotates counterclockwise around the axis of the shaft 502, and the pressing member 50 translates from left to right. That is, the rotation direction of the circular member 501 and the moving direction of the pressing member 50 are opposite. During the movement of the pressing member 50, one side of the protrusion 504 of the pressing member 50 contacts the third side surface of the bent segment 23.

[0073] According to the pressing device for processing the heat exchanger according to an embodiment of the present disclosure, in one translational movement of the pressing member 50, the rotation angle and the moving distance of the bent segment 23 of each heat exchange tube 20 are equal, which can improve the appearance of the heat exchanger 100. Moreover, since the heat exchange tube 20 does not receive a horizontal thrust, the deformation of the heat exchanger 100, that is, the amount of deformation of the heat exchanger 100, can be reduced.

[0074] In the description of the present disclosure, terms such as "center", "longitudinal direction", "lateral direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. indicate the orientation or positional relationship shown based on the drawings. They are only for explaining the present disclosure and simplifying the description, and do not indicate or imply that the shown device or element must have a specific orientation and be structured and operated according to a specific orientation. Therefore, they should not be understood as limitations to the present disclosure.

[0075] Also, the terms "first" and "second" are used only for the purpose of explanation, and do not indicate or imply relative importance or implicitly indicate the number of the shown technical features. Thus, the features limited to "first" and "second" can explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless there is no specific clear limitation.

[0076] In the present disclosure, unless there are clear regulations and limitations, terms such as "attach", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, an integral one, or a mechanical connection, an electrical connection, or a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two elements or an interaction relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present disclosure according to the specific situation.

[0077] In the present disclosure, unless there are particularly clear regulations and limitations, the fact that the first feature is "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Also, the fact that the first feature is "above", "upward", and "upper surface" of the second feature may only indicate that the first feature is directly above or obliquely above the second feature, or the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "below", "downward", "beneath" the second feature may only indicate that the first feature is directly below or obliquely below the second feature, or the horizontal height of the first feature is lower than that of the second feature.

[0078] In the present disclosure, descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in combination with the corresponding embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the general descriptions of the above terms are not necessarily directed to the same embodiment or example. Also, the described specific features, structures, materials, or advantages can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, unless they conflict with each other, those skilled in the art can combine or combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0079] The embodiments of the present disclosure have been shown and described above. However, the above embodiments are exemplary and should not be construed as limitations on the present disclosure. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Description of Reference Numerals

[0080] heat exchanger 100, manifold 10, first pipe 11, second pipe 12, heat exchange pipe 20, first segment 21, second segment 22, bent segment 23, torsion segment 231, side plate 30, fin 40, pressing member 50, arc surface 51, flat surface 52, circular member 501, shaft 502, support member 503, protrusion 504.

Claims

1. A method for fabricating a heat exchanger, comprising the steps of: providing the heat exchanger, the heat exchanger including a first tube, a second tube, and a heat exchange tube, the heat exchange tube communicating with the first tube and the second tube, the heat exchange tube including a first segment, a second segment, and a bent segment, one end of the bent segment being connected to the first segment and the other end of the bent segment being connected to the second segment, the bent segment of the heat exchange tube including a twisted segment, the heat exchange tube being a plurality of heat exchange tubes, the first segments of the plurality of heat exchange tubes being spaced apart along a longitudinal direction of the first tube, the second segments of the plurality of heat exchange tubes being spaced apart along a longitudinal direction of the first tube, and the bent segment of one of the heat exchange tubes contacting at least a portion of the bent segment of the other of the heat exchange tubes adjacent to the longitudinal direction of the first tube prior to processing of the heat exchanger; positioning a pressing member such that at least a portion of the pressing member contacts at least a portion of the bent segment of at least one of the heat exchange tubes; moving the pressing member to rotate the bent segment through a predetermined angle or move the bent segment through a predetermined distance relative to the connected first segment; and / or moving the bent segment of the heat exchange tube such that the bent segment is rotated a predetermined angle or moved a predetermined distance relative to the first segment to which it is connected; and ensuring that the bent segment of one of the heat exchange tubes after processing does not contact the bent segment of a longitudinally adjacent heat exchange tube of the first tube. How to process a heat exchanger.

2. the twisted segment is formed by twisting at least a portion of the bent segment of the heat exchange tube relative to the first segment of the heat exchange tube, and the pressing member moves such that positions of the pressing member and a portion of the bent segment in the longitudinal direction of the first tube change. A method for manufacturing the heat exchanger according to claim 1.

3. the heat exchange tube includes a first side and a second side that are disposed along a first direction, the heat exchange tube includes a third side and a fourth side that are disposed along a second direction, and the pressing member contacts a portion of the third side of at least one of the bent segments during movement to rotate the bent segment by a predetermined angle or move the bent segment by a predetermined distance relative to the first segment to which it is connected; A method for manufacturing the heat exchanger according to claim 1.

4. During the movement, the pressing member contacts a portion of a second side of at least one of the bent segments to rotate the bent segment by a predetermined angle or move the bent segment by a predetermined distance relative to the first segment to which it is connected. A method for manufacturing the heat exchanger according to claim 3.

5. During the movement of the pressing member, the pressing member simultaneously contacts the plurality of bending segments to rotate the plurality of bending segments by a predetermined angle or move the plurality of bending segments by a predetermined distance relative to the first segment connected to each of the bending segments. A method for processing the heat exchanger according to any one of claims 1 to 4.

6. the pressing member includes a rotating portion and a shaft, the rotating portion includes at least a portion of a circumferential surface, and the circumferential surface of the rotating portion contacts a portion of the bent segment of at least one of the heat exchange tubes while the pressing member is moving; A method for processing the heat exchanger according to any one of claims 1 to 4.

7. While the pressing member is moving, the rotating part rotates around the axis of the shaft, and the rotation direction of the rotating part is opposite to the rotation direction of the bent segment relative to the first segment to which the bent segment is connected. A method for manufacturing the heat exchanger according to claim 6.

8. While the pressing member is moving, the rotation direction of the rotating part is opposite to the movement direction of the pressing member. A method for manufacturing the heat exchanger according to claim 7.

9. The heat exchange tube is a microchannel flat tube; A method for processing the heat exchanger according to any one of claims 1 to 4.

10. A pressing device for processing a heat exchanger, comprising: The heat exchanger includes a heat exchange tube, the heat exchange tube including a first segment, a second segment, and a curved segment, one end of the curved segment being connected to the first segment and the other end of the curved segment being connected to the second segment, the pressing device pressing the curved segment of the heat exchange tube to rotate by a predetermined angle or move by a predetermined distance, the pressing device including a pressing member, the pressing member including an outer surface, and a surface hardness of at least a portion of the outer surface being equal to or less than a surface hardness of the heat exchange tube. Pressing device for processing heat exchangers.

11. the outer surface of the pressing member includes an arcuate surface or an inclined surface, and the surface hardness of at least a portion of the arcuate surface or the inclined surface is equal to or lower than the surface hardness of the heat exchange tube; A pressing device for processing a heat exchanger according to claim 10.

12. The heat exchange tube includes a first side and a second side that are arranged along a first direction, the heat exchange tube includes a third side and a fourth side that are arranged along a second direction, the pressing member includes an arc surface and a plane surface, the arc surface of the pressing member contacts the third side of the bent segment, and the pressing member enables the bent segment to rotate by a predetermined angle or move by a predetermined distance relative to the first segment to which it is connected. A pressing device for processing a heat exchanger according to claim 10.

13. The pressing member is a circular member including a circumferential surface and a first aperture; an axis located in the first bore, the circumferential surface being symmetrically disposed about the axis; A pressing device for processing a heat exchanger according to claim 10.

14. a circular member connected to the shaft, the circumferential surface of the circular member being contactable with a portion of the bent segment of at least one of the heat exchange tubes; A pressing device for processing a heat exchanger according to claim 13.

15. The pressing member further includes a protrusion, The protrusion is connected to the circumferential surface of the circular member and is located outside the circumferential surface, the protrusion is multiple, and the multiple protrusions are spaced apart along the circumferential direction of the circumferential surface. A pressing device for processing a heat exchanger according to claim 13.

16. The heat exchange tube includes a first side and a second side that are arranged along a first direction, the heat exchange tube includes a third side and a fourth side that are arranged along a second direction, and one side of the protrusion of the pressing member is contactable with the third side of the bent segment. A pressing device for processing a heat exchanger according to claim 15.

17. The pressing member further includes a support member, and both ends of the shaft are connected to the support member. A pressing device for processing a heat exchanger according to claim 13.

18. the bent segment of the heat exchange tube includes a twisted segment, the heat exchange tube is multiple, first segments of the multiple heat exchange tubes are spaced apart along the moving direction of the pressing member, and second segments of the multiple heat exchange tubes are spaced apart along the moving direction of the pressing member, before processing the heat exchanger, the bent segment of one of the heat exchange tubes contacts at least a portion of the bent segment of another of the heat exchange tubes adjacent to the moving direction of the pressing member, and while the pressing member is moving, the circular member is rotatable around the axis of the shaft, and the rotation direction of the circular member is opposite to the rotation direction of the bent segment relative to the first segment of the heat exchange tube. A pressing device for processing a heat exchanger according to claim 17.

19. The position of the tip of the pressing member is higher than the position of the lower end of the bent segment of the heat exchange tube. A pressing device for processing the heat exchanger according to any one of claims 10 to 18.

20. The distance between the tip of the pressing member and the lower end of the bent segment of the heat exchange tube is equal to or greater than the vertical movement distance of the bottom of the bent segment. A pressing device for processing a heat exchanger according to claim 19.

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