JP2018202489A - Manufacturing method of air conditioner and/or manufacturing method of outdoor unit for use in air conditioner - Google Patents

Abstract

To provide a manufacturing method of an air conditioner with a heat exchanger in which a flare plate stop position adjustment is unnecessary even when the position of a pipe port part of a pipe changes by kind of heat exchanger and flare processing of the same shape is formed at constant depth in the pipe port parts of pipes with different lengths, and/or the manufacturing method of an outdoor unit for use in the air conditioner.SOLUTION: A manufacturing method of an air conditioner is characterized as follows: a flare base B with a flare punch 10 in a tip is drawn to a reference table A through connection/tensile force generating means for connecting the flare base B with a grip body base 3h, and generating tensile force in the direction to draw each other between constant distances, and is drawn to the fixed/retained grip body base 3h side through locking means; thereby, the flare punch 10 is forcibly fitted into the pipe expansion part of the pipe port part side to give flare processing; then, the flare base B, the grip body base 3h and each slide base are escaped from a heat exchanger 5; and thereby the air conditioner with the heat exchanger 5 is manufactured and/or its outdoor unit is manufactured.SELECTED DRAWING: Figure 1

Description

  Even if the present invention expands a hairpin tube or a straight tube inserted through each through hole of a plurality of radiating fins and integrally forms the radiating fin, the entire length of the expanded hairpin tube or straight tube is reduced. Not only can it be kept substantially the same as before the expansion, but also a method of manufacturing an air conditioner having a heat exchanger that can efficiently perform flare processing in the same process and / or used in the air conditioner The present invention relates to a method for manufacturing an outdoor unit.

Conventionally, for example, as a method of manufacturing a heat exchanger that can keep the total length of a pipe to be expanded, which is approximately the same as that before the expansion, both techniques of JP-A-2002-205134 and JP-A-2000-301271 are integrated. There are some used.
JP 2002-205134 A JP 2000-301271 A

  That is, the one described in the former gazette is reciprocally movable along the longitudinal direction of a support column installed on the base of the tube expansion device, and protrudes from the end plate of the heat exchanger set on the base. An expanded tube having a reference stand for stopping a stripper plate at a predetermined position, which can be externally fitted to the tube so as to set the projecting length of the tube, and which has a stripper which pushes the end plate down while abutting the end plate. The latter publication uses a gripping body having a plurality of tube abutting members that can be replaced with the stripper and can be radially expanded and contracted in a direction intersecting the longitudinal direction of the tube. In addition to being able to keep the total length of the pipe expanded by using the gripping body substantially the same as before the pipe expansion, the so-called secondary and tertiary flare processing is performed at the tube opening of the pipe after the primary expansion. Also Succoth is what can be.

  The tube expansion apparatus using both the technique described in the former gazette and the latter gazette will be described in more detail. The first plate body (stripper plate) having a gripping body is used as an end plate of a heat exchanger. When the first plate body is further lowered while the tip end of the tube abutting member of the gripping body is brought into contact with the end plate while being moved downward from the projecting tube side, the first plate body comes into contact with the reference base. Thus, the movement is prevented and the length of the tube protruding from the end plate can be set via the tube abutting member of the gripping body.

  Next, by lowering the mandrel plate body provided with the tube expansion mandrel, the tube expansion mandrel is press-fitted from the tube opening portion with a predetermined size to form a tube expansion portion having a predetermined length, and then the periphery of the tube expansion portion is formed. The surface portion is gripped and held by a plurality of tube abutting members that are radially expandable / contractible of the gripping body, and then the mandrel plate body is lowered again to expand the tube through the tube expansion mandrel, and then the tube expanding portion. Is released from the fixing of the pipe contact member, and then the flare plate having the flare punch is lowered to the heat exchanger side, and the flare punch is press-fitted into the pipe opening portion to perform the flare processing, thereby producing the heat exchanger. It can be done.

  However, the tube expansion device having the above-described configuration lowers the flare plate having the flare punch to the heat exchanger side and press-fits the flare punch into the pipe opening portion to perform flare processing. The length of the tube used in the heat exchanger (the length of the heat exchanger also changes, so the position of the end plate naturally changes) is not always constant.

  Therefore, there is a problem that not only an adjustment device for adjusting the stop position of the flare plate that is lowered every time the position of the end plate of the heat exchanger for expanding the tube is changed, but also the adjustment work is complicated. .

  That is, the present invention relates to a tube projecting from a heat exchanger end plate with a predetermined projecting length depending on the position of the tube opening of the heat exchanger tube to be expanded, more specifically, the type of the heat exchanger. Even if the position of the pipe mouth part changes appropriately depending on the position of the end plate, an adjustment device for adjusting the stop position of the flare plate to be flared is not necessary each time. The complicated adjustment work is not necessary at all, and the tubes inserted in a staggered manner into the heat dissipating fins of the heat exchanger are arranged in multiple rows such as 3 rows, 4 rows, etc. Even in this case, not only can the tube located on the inner side be securely and firmly held in the same manner as the straight tube or hairpin tube located on the outer side, but also a heat exchanger for expanding the tube. The diameter of the straight pipe or hairpin pipe is the same as the heat exchanger specification. Even if it changes depending on the type, the tube mouth side of the tube can be held securely and firmly, and complicated flare processing can be applied to the tube in the same process. Regardless of the protruding length of the tube protruding from the end plate of the exchanger, the same flare processing is always performed by applying a predetermined flaring process from the tube mouth of the tube until it reaches the same position of the tube separated from the end plate by a certain distance. Can be formed in a heat exchanger, so that not only the quality control is easy when brazing a bend pipe or the like to the flared portion, but also the occurrence of defects such as water leakage can be reduced. An object of the present invention is to provide the market with a method for manufacturing an air conditioner having a quality heat exchanger and / or a method for manufacturing an outdoor unit used in the air conditioner.

Therefore, the present invention invents a method of manufacturing an air conditioner having a completely new heat exchanger and / or a method of manufacturing an outdoor unit used in the air conditioner in order to solve the above problems, and takes the following measures. It is a thing.
That is, in the method of manufacturing an air conditioner according to the present invention, the heat exchanger (5) includes a plurality of heat radiation fins (6), an end plate (5a) sandwiching the plurality of heat radiation fins, and a pipe (7 In addition, the tube (7) protruding from the end plate (5a) can be radially expanded and contracted in the direction intersecting the longitudinal direction of the tube (7) from the side of the tube port (7b) and on the outer peripheral portion. A gripping body (3) having a plurality of pipe abutting members (3f) having a surface portion that radially expands toward the pipe (7) side and capable of covering the pipe (7) is provided. A reference for setting the protruding length of the tube (7) that moves the gripping body base (3h) toward the heat exchanger (5) and then moves the gripping base (3h) protruding from the end plate (5a) The gripper base (3h) is brought into contact with the base (A) by contact (Aa). After stopping the movement to the exchanger (5) side, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then from the end plate (5a). The expansion mandrel (2), which is present in a reciprocating manner in the gripping body (3), is press-fitted in a predetermined dimension from the tube opening (7b) of the protruding tube (7) to expand the tube expansion portion (7d) having a predetermined length. Is formed between the end plate (5a) and the gripping body base (3h), and is fitted onto the gripping body (3) having the plurality of tube contact members (3f). By moving (C1) the sliding base (3d) provided with the moving gripper sliding means (Xa) to the heat exchanger (5) side, each of the plurality of tube contact members (3f) is moved. The tube expansion portion (7d) is reduced in diameter and gripped by the plurality of tube contact members (3f), and then the tube expansion mandrel (2) is advanced again. After the pipe (7) is expanded, the sliding base (3d) is retracted (C2) from the heat exchanger (5) to release the expanded section (7d) from gripping the pipe abutting member (3f). After that, it exists behind the gripping body base (3h) through a predetermined distance, and has a predetermined length as far as possible so as to be fitted into the tube expansion mandrel (2) in the gripping body (3). A flare base (B) having a flare pipe (10a) with a flare punch (10) for flare processing is connected to the flare base (B) and the gripping body base (3h), and at a fixed distance from each other. Through the connecting and pulling force generating means that generates a pulling force in the direction of pulling in between, the gripper base (3h) side that is fixedly held by the reference base (A) via the locking means is always pulled at a constant distance. (C3) From the expanded portion (7d) on the side of the tube opening (7b) By inserting the flare punch (10), the pipe (7) spaced apart from the end plate (5a) by a certain distance regardless of the protruding length of the pipe (7) protruding from the end plate (5a) of the heat exchanger (5). Predetermined flare processing (7j) is performed from the tube opening (7b) of the pipe (7) until the same position is reached, and then each of the flare base (B), the gripping body base (3h) and the sliding base (3d) Regardless of the protruding length of the tube (7) protruding from the end plate (5a), a bend tube is brazed to the flared portion of the heat exchanger (5) manufactured by evacuating the heat exchanger (5). The production of an air conditioner (20) having a heat exchanger (5) having a bend pipe brazed at the same position of a pipe (7) spaced apart from the end plate (5a) by a certain distance. .

Furthermore, in the method of manufacturing an air conditioner according to the present invention, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7 In addition, the tube (7) protruding from the end plate (5a) can be radially expanded and contracted in the direction intersecting the longitudinal direction of the tube (7) from the side of the tube port (7b) and on the outer peripheral portion. A gripping body (3) having a plurality of pipe abutting members (3f) having a surface portion that radially expands toward the pipe (7) side and capable of covering the pipe (7) is provided. A reference for setting the protruding length of the tube (7) that moves the gripping body base (3h) toward the heat exchanger (5) and then moves the gripping base (3h) protruding from the end plate (5a) The gripper base (3h) is brought into contact with the base (A) by contact (Aa). After stopping the movement to the exchanger (5) side, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then from the end plate (5a). The expansion mandrel (2), which is present in a reciprocating manner in the gripping body (3), is press-fitted in a predetermined dimension from the tube opening (7b) of the protruding tube (7) to expand the tube expansion portion (7d) having a predetermined length. Is formed between the end plate (5a) and the gripping body base (3h), and is fitted onto the gripping body (3) having the plurality of tube contact members (3f). By moving (C1) the sliding base (3d) provided with the moving gripper sliding means (Xa) to the heat exchanger (5) side, each of the plurality of tube contact members (3f) is moved. The tube expansion portion (7d) is reduced in diameter and gripped by the plurality of tube contact members (3f), and then the tube expansion mandrel (2) is advanced again. While expanding the pipe (7), the pipe (7) is present behind the gripper base (3h) through a predetermined distance, and within the gripper (3), the pipe mandrel (2) is fitted to the pipe expansion mandrel (2) as much as possible. A flare base (B) having a flare pipe (10a) provided with a flare punch (10) for flare processing at the tip while having a length is connected to the flare base (B) and the gripping body base (3h). At the same time, to the gripper base (3h) side that is fixedly held by the reference base (A) via the locking means via the connecting and pulling force generating means that generates a pulling force in a direction that pulls each other at a certain distance. (C3) A pipe protruding from the end plate (5a) of the heat exchanger (5) by pressing the flare punch (10) from the expanded pipe (7d) on the side of the pipe opening (7b). Regardless of the protruding length of (7) A predetermined flaring process (7j) is applied from the pipe opening (7b) of the pipe (7) until it reaches the same position of the pipe (7) separated from the rate (5a) by a certain distance, and then the sliding base (3d) is applied. By retracting (C2) from the heat exchanger (5), the expanded pipe portion (7d) is released from the gripping of the tube contact member (3f), and the flare base (B), the gripping body base (3h), and the slide A bend pipe is brazed to the flared portion of the heat exchanger (5) manufactured by escaping each of the dynamic bases (3d) from the heat exchanger (5), and then the pipe (7 The air conditioner (20) has a heat exchanger (5) having a bend pipe brazed at the same position of the pipe (7) spaced apart from the end plate (5a) by a fixed distance regardless of the projection length of ) To manufacture.

  Furthermore, the manufacturing method of the outdoor unit used for the air conditioner in the present invention is such that the heat exchanger (5) is inserted into the plurality of radiation fins (6), the end plate (5a) sandwiching the plurality of radiation fins, and each of them. In addition, the pipe (7) protrudes from the end plate (5a) and is radially expandable in a direction intersecting with the longitudinal direction of the pipe (7) from the tube opening (7b) side of the pipe (7). And a gripping body having a plurality of tube abutting members (3f) capable of covering the tube (7) and having a surface portion radially expanding toward the tube (7) side direction on the outer peripheral portion. 3) The gripper base (3h) having 3) is moved to the heat exchanger (5) side, and then the gripping base (3h) that moves is projected from the end plate (5a). Grip by making contact (Aa) with the reference base (A) that sets the length After stopping the movement of the base (3h) to the heat exchanger (5) side, the holding body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then A mandrel (2) for expanding the tube that is reciprocally inserted into the gripping body (3) from the tube port (7b) of the tube (7) protruding from the end plate (5a) is press-fitted with a predetermined size to a predetermined length. After the tube expansion portion (7d) is formed, the holding body (3f) provided between the end plate (5a) and the holding body base (3h) and having the plurality of pipe contact members (3f) ( 3) By moving (C1) the sliding base (3d) provided with the gripper sliding means (Xa) to be fitted and slid to the heat exchanger (5), a plurality of tube contact members Each of (3f) is reduced in diameter and the expanded portion (7d) is gripped by the plurality of tube abutting members (3f), and then the expanded mandrel 2) is advanced again and the pipe (7) is expanded, and then the sliding base (3d) is retracted (C2) from the heat exchanger (5) so that the expanded section (7d) is connected to the pipe abutting member (3f). Is then released from the gripping body base (3h) at a predetermined distance behind the gripping body base (3h) and has a predetermined length as long as it can be fitted into the tube expansion mandrel (2) in the gripping body (3). A flare base (B) having a flare pipe (10a) provided with a flare punch (10) for flare processing at the tip, and connecting the flare base (B) and the gripping body base (3h) To the grip base (3h) side secured to the reference table (A) via the locking means via the connecting and pulling force generating means for generating a pulling force in a direction to draw each other at a certain distance. Always pull at a certain distance (C3) on the side of the tube port (7b) A fixed distance from the end plate (5a) regardless of the protruding length of the tube (7) protruding from the end plate (5a) of the heat exchanger (5) by press-fitting the flare punch (10) from the expanded portion (7d). A predetermined flaring process (7j) is applied from the tube opening (7b) of the pipe (7) until it reaches the same position of the pipe (7), and then the flare base (B), the gripping body base (3h) and the sliding A bend pipe is brazed to the flared portion of the heat exchanger (5) manufactured by escaping each base (3d) from the heat exchanger (5), and then the pipe (7) protruding from the end plate (5a) Air conditioner (20) having a heat exchanger (5) having a bend pipe brazed at the same position of a pipe (7) spaced apart from the end plate (5a) by a fixed distance regardless of the protruding length of It is to manufacture the outdoor unit (21).

  Furthermore, the manufacturing method of the outdoor unit used for the air conditioner in the present invention is such that the heat exchanger (5) is inserted into the plurality of radiation fins (6), the end plate (5a) sandwiching the plurality of radiation fins, and each of them. In addition, the pipe (7) protrudes from the end plate (5a) and is radially expandable in a direction intersecting with the longitudinal direction of the pipe (7) from the tube opening (7b) side of the pipe (7). And a gripping body having a plurality of tube abutting members (3f) capable of covering the tube (7) and having a surface portion radially expanding toward the tube (7) side direction on the outer peripheral portion. 3) The gripper base (3h) having 3) is moved to the heat exchanger (5) side, and then the gripping base (3h) that moves is projected from the end plate (5a). Grip by making contact (Aa) with the reference base (A) that sets the length After stopping the movement of the base (3h) to the heat exchanger (5) side, the holding body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then A mandrel (2) for expanding the tube that is reciprocally inserted into the gripping body (3) from the tube port (7b) of the tube (7) protruding from the end plate (5a) is press-fitted with a predetermined size to a predetermined length. After the tube expansion portion (7d) is formed, the holding body (3f) provided between the end plate (5a) and the holding body base (3h) and having the plurality of pipe contact members (3f) ( 3) By moving (C1) the sliding base (3d) provided with the gripper sliding means (Xa) to be fitted and slid to the heat exchanger (5), a plurality of tube contact members Each of (3f) is reduced in diameter, and the expanded portion (7d) is gripped by the plurality of tube abutting members (3f), and then the expanded mandrel ( ) Again to expand the tube (7), while existing behind the gripper base (3h) through a predetermined distance, and to the tube expansion mandrel (2) within the gripper (3). A flare base (B) having a flare pipe (10a) having a flare punch (10) for flare processing at the tip while having a predetermined length as much as possible in an external fitting state, the flare base (B) and a gripping body base ( 3h), and a gripping body fixedly held on the reference table (A) via a locking means via a connecting and pulling force generating means for generating a pulling force in a direction that pulls them together at a fixed distance. The end plate (5) of the heat exchanger (5) is drawn by always pulling it toward the base (3h) side at a constant distance (C3) and press-fitting the flare punch (10) from the expanded portion (7d) on the side of the tube opening (7b). Projection length of tube (7) projecting from 5a) Regardless of the end plate (5a), a predetermined flaring process (7j) is applied from the pipe opening (7b) to the same position of the pipe (7) spaced apart from the end plate (5a). By retracting (3d) from the heat exchanger (5) (3d), the expanded pipe portion (7d) is released from the gripping of the tube contact member (3f), and the flare base (B) and gripping body base ( 3h) and the sliding base (3d) are each escaped from the heat exchanger (5), and the bend pipe is brazed to the flared portion of the heat exchanger (5), and then protrudes from the end plate (5a). Air having a heat exchanger (5) with a bend pipe brazed at the same position of the pipe (7) at a certain distance from the end plate (5a) regardless of the protruding length of the pipe (7) It is to manufacture the outdoor unit (21) of the harmony machine (20).

  In the present invention, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5). (5a) The tube (7) projecting from (5a) is radially expandable / contractable in the direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side, and toward the tube (7) side direction toward the outer peripheral portion. A gripping body base (3h) having a gripping body (3) having a plurality of pipe abutting members (3f) having a radially expanding surface portion and capable of covering the pipe (7) is heated. The gripper base (3h) moved to the exchanger (5) side is then brought into contact with the reference base (A) for setting the projecting length of the tube (7) projecting from the end plate (5a) (Aa ) To stop the movement of the gripper base (3h) to the heat exchanger (5) side. Thereafter, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the tube opening (7b) of the pipe (7) protruding from the end plate (5a). After that, a tube expansion mandrel (2) that reciprocates in the holding body (3) is press-fitted with a predetermined size to form a tube expansion portion (7d) having a predetermined length, and then gripped with the end plate (5a). A gripping body sliding means (Xa) is provided between the gripping body base (3h) and externally sliding on the gripping body (3) having the plurality of tube contact members (3f). By moving (C1) the sliding base (3d) toward the heat exchanger (5), the diameter of each of the plurality of tube contact members (3f) is reduced, and the expanded portion (7d) is connected to the plurality of tubes. After gripping by the contact member (3f), the tube expansion mandrel (2) is then advanced again to expand the tube (7), By retracting (3d) from the heat exchanger (5) (3d), the pipe expansion part (7d) is released from the grip of the pipe abutting member (3f), and then the rear side of the gripper base (3h) is predetermined. And a flare pipe having a flare punch (10) for flaring at the tip while having a predetermined length so as to be fitted to the expansion mandrel (2) in the gripping body (3). The flare base (B) having (10a) connects the flare base (B) and the gripping body base (3h), and at the same time, connects and pulls to generate a pulling force in a direction that pulls them apart by a certain distance It is always drawn at a fixed distance to the gripper base (3h) side fixed and held to the reference base (A) via the lock means via the force generating means (C3) and the pipe opening (7b) side is expanded Press-fitting flare punch (10) from part (7d) Regardless of the protruding length of the tube (7) protruding from the end plate (5a) of the heat exchanger (5), a predetermined flare is reached until the same position of the tube (7) separated from the end plate (5a) by a certain distance. Processing (7j) is performed from the tube opening (7b) of the tube (7), and then each of the flare base (B), the gripping body base (3h) and the sliding base (3d) is removed from the heat exchanger (5). Since the heat exchanger is manufactured by escaping, it is possible to always move the flare base (B) to be flare processed by pulling it toward the grip base (3h) side at a constant distance, thereby expanding the tube. The position of the pipe opening (7b) of the pipe (7) of the heat exchanger (5) to be performed (the total length of the heat exchanger (5) varies depending on the length of the pipe used in the heat exchanger for expanding the pipe, Is the type of heat exchanger (5). Therefore, even if it changes, not only an adjustment device for adjusting the stop position of the flare base (flare plate) is required, but also no complicated adjustment work is required, and the length of the pipe (7) is not changed. The pipes separated from the end plate (5a) by a fixed distance regardless of the protruding length of the pipe (7) protruding from the end plate (5a) of various heat exchangers (5) where the position of the end plate (5a) is appropriately different The special effect that the heat exchanger (5) in which the flare processing of the same shape was formed in the depth to the same position of (7) can be manufactured efficiently is produced.

  Further, according to the present invention, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5). The tube (7) protruding from the end plate (5a) is radially expandable / contractable in the direction intersecting with the longitudinal direction of the tube (7) from the tube opening (7b) side, and on the outer peripheral portion in the tube (7) side direction. Grasping body base (3h) having a gripping body (3) having a plurality of tube abutting members (3f) having a surface portion that radially expands toward the surface and capable of covering the tube (7) Is moved to the heat exchanger (5) side, and then the moving grip base (3h) is brought into contact with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). (Aa) Stops the gripper base (3h) from moving toward the heat exchanger (5). After that, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the tube port portion (7) protruding from the end plate (5a) ( 7b), a tube expansion mandrel (2) existing in a reciprocating manner in the holding body (3) is press-fitted with a predetermined size to form a tube expansion portion (7d) having a predetermined length, and then the end plate (5a) Gripping body sliding means (Xa) provided between the gripping body base (3h) and externally sliding on the gripping body (3) having the plurality of tube contact members (3f) Is moved to the heat exchanger (5) side (C1), thereby reducing the diameter of each of the plurality of tube abutting members (3f) and providing a plurality of expanded portions (7d). The tube abutment member (3f) is then held, and then the tube expansion mandrel (2) is advanced again to expand the tube (7). It exists behind the body base (3h) through a predetermined distance, and has a predetermined length to be fitted to the tube expansion mandrel (2) in the gripping body (3), while being flared at the tip. A flare base (B) having a flare pipe (10a) provided with a flare punch (10) is flared at the tip while having a predetermined length so as to be fitted to a mandrel (2) for expansion in a gripping body (3). A flare base (B) having a flare pipe (10a) with a flare punch (10) for processing is connected to the flare base (B) and the gripping body base (3h), and is connected to each other for a certain distance. Is always pulled at a fixed distance to the gripper base (3h) side, which is fixedly held on the reference base (A) via the locking means, via the connecting and pulling force generating means that generates a pulling force in the pulling direction. (C3) Pipe opening (7 b) From the end plate (5a) regardless of the projecting length of the pipe (7) projecting from the end plate (5a) of the heat exchanger (5) by press-fitting the flare punch (10) from the expanded pipe portion (7d) on the side A predetermined flaring process (7j) is applied from the pipe opening (7b) of the pipe (7) until it reaches the same position of the pipe (7) separated by a certain distance, and then the sliding base (3d) is attached to the heat exchanger (5 ) From the gripping of the tube abutting member (3f), the flare base (B), the gripping body base (3h) and the sliding base (3d) Since the heat exchanger is manufactured by escaping each from the heat exchanger (5), the flare base (B) to be flared is always drawn toward the holding body base (3h) at a constant distance. The mandrel for pipe expansion (2) pipes the process of moving By performing 7) during the process of expanding the tube (during the primary expansion), the total process time can be shortened to about half compared to the total process time of performing the secondary and tertiary flare expansion after the primary expansion. In addition to the effect that it is possible to realize a pipe expansion process with extremely high production efficiency, the position (7b) of the pipe port (7b) of the pipe (7) of the heat exchanger (5) for pipe expansion is performed. Even if the total length of the heat exchanger (5) changes depending on the length of the tube used in the heat exchanger, and the position of the end plate changes) depending on the type of the heat exchanger (5). The adjustment device for adjusting the stop position of the flare base (flare plate) is not necessary, and no complicated adjustment work is required. Various heat exchangers (5) with different positions Regardless of the protruding length of the tube (7) protruding from the plate (5a), the same shape of flaring is formed at the depth from the end plate (5a) to the same position of the tube (7) spaced apart from the end plate (5a). The heat exchanger (5) can be manufactured efficiently.

  Further, according to the present invention, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5). The tube (7) protruding from the end plate (5a) is radially expandable / contractable in the direction intersecting with the longitudinal direction of the tube (7) from the tube opening (7b) side, and on the outer peripheral portion in the tube (7) side direction. Grasping body base (3h) having a gripping body (3) having a plurality of tube abutting members (3f) having a surface portion that radially expands toward the surface and capable of covering the tube (7) Is moved to the heat exchanger (5) side, and then the moving grip base (3h) is brought into contact with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). (Aa) Stops the gripper base (3h) from moving toward the heat exchanger (5). After that, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the tube port portion (7) protruding from the end plate (5a) ( 7b), when the tube expansion portion (7d) having a predetermined length is formed by press-fitting the tube expansion mandrel (2) existing in a reciprocating manner into the gripping body (3) with a predetermined size. The flare base (B) having the flare pipe (10a) provided with the flare punch (10) for flare processing at the tip is moved to the heat exchanger (5) side by moving the tip of the flare punch (10). The abutment is maintained between the tube opening (7b) and the abutment portion (7b), and thereafter, the abutment is provided between the end plate (5a) and the gripper base (3h). Gripping body sliding means (Xa) for externally sliding on the gripping body (3) having The sliding base (3d) is moved (C1) toward the heat exchanger (5), thereby reducing the diameter of each of the plurality of tube abutting members (3f) so that the expanded portion (7d) is connected to the plurality of tubes. After gripping by the contact member (3f) and then expanding the tube mandrel (2) again to expand the tube (7), there is a predetermined distance behind the gripper base (3h). In addition, the flare having a flare pipe (10a) having a flare punch (10) for flaring at the tip while having a predetermined length so as to be fitted to the tube expansion mandrel (2) in the gripping body (3). The base (B) is connected to the flare base (B) and the gripping body base (3h), and via a connecting and tensile force generating means for generating a tensile force in a direction of pulling each other at a certain distance. A gripping body fixedly held on the reference table (A) via a locking means The end plate (5) of the heat exchanger (5) is drawn by always pulling it toward the base (3h) side at a constant distance (C3) and press-fitting the flare punch (10) from the expanded portion (7d) on the side of the tube opening (7b). Regardless of the protruding length of the tube (7) protruding from 5a), the predetermined flare processing (7j) is performed until the tube (7) reaches the same position of the tube (7) spaced apart from the end plate (5a) by a predetermined distance. The pipe expansion part (7d) is released from the grip of the pipe contact member (3f) by applying from the mouth part (7b) and then retracting the sliding base (3d) from the heat exchanger (5) (C2). Since the heat exchanger is manufactured by escaping each of the flare base (B), the gripper base (3h), and the sliding base (3d) from the heat exchanger (5), the flare base is subjected to flare processing. (B) always toward the gripper base (3h) Before the step of moving at a fixed distance, the mandrel (2) for expanding the tube while maintaining the contact while causing a part of the tip of the flare punch (10) of the flare base (B) to enter the tube opening (7b). ) Is performed during the process of expanding the pipe (7) (during the primary expansion) or after the expansion (after the primary expansion), the abutment between the pipe opening (7b) and the tip of the flare punch (10) It is possible to avoid the impact in advance, and thus it is possible to prevent the pipe opening (7b) from being deformed by galling or the like, and the flare punch (10) from being damaged, and thus heat exchange with a very low defect rate. Not only can be manufactured, but also the total process time can be shortened compared to the total process time for secondary and tertiary flare pipe expansion after the primary pipe expansion, realizing a pipe expansion process with extremely high production efficiency. It has the effect of being able to Not only the position of the tube opening (7b) of the pipe (7) of the heat exchanger (5) for expanding the pipe (the total length of the heat exchanger (5) depending on the length of the pipe used for the heat exchanger for expanding the pipe) Even if the position of the end plate changes depending on the type of the heat exchanger (5), an adjustment device for adjusting the stop position of the flare base (flare plate) is unnecessary. In addition, it does not require any complicated adjustment work and protrudes from the end plates (5a) of various heat exchangers (5) where the positions of the end plates (5a) are appropriately changed through the entire length of the pipe (7). Regardless of the projecting length of the pipe (7), the heat exchanger (5) in which the same shape of flaring is formed at a depth from the end plate (5a) to the same position of the pipe (7) separated by a certain distance. ) Can be manufactured efficiently There is an effect.

  According to each of the above inventions, for example, when the tubes (7) inserted in a zigzag manner in the heat dissipating fins of the heat exchanger (5) are arranged in a plurality of rows such as 3 rows, 4 rows, etc. Even so, not only can the tube (7) located on the inner side be securely and firmly held in the same manner as the tube (7) located on the outer side, but also a heat exchanger that expands the tube ( Even if the pipe diameter of the pipe (7) of 5) varies depending on the type of specification of the heat exchanger (5), the pipe mouth (7b) side of the pipe (7) is securely attached to the plurality of pipes. The holding member (3) having the contact member (3f) can be held, and a complicated flare process can be applied to the pipe (7) in the same process.

  Furthermore, in each of the above inventions, when the gripper base (3h) is moved to the heat exchanger (5) side, the tip of the tube contact member (3f) is connected to the end plate (5a) of the heat exchanger (5). The tube abutting member (3f) is further moved to the heat exchanger (5) side through the gripper base (3h) while maintaining the abutted state. When the protrusion length from the end plate (5a) of the pipe (7) is set by bringing the holding base (3h) into contact with the reference base (A) (Aa), the heat exchanger (5 ), The position of the end plate (5a) and the position of the tube (7) protruding from the end plate (5a) always through the reference table (A) that can reciprocate. There is an effect that the protruding length can always be easily and reliably maintained.

  Furthermore, in each of the above inventions, the flare base (B) and the gripping body base (at the time of flare processing) are connected to at least one of the coupling / tensile force generating means, the flare base (B) and / or the gripping body base (3h). When a distance adjusting means capable of adjusting and setting the distance to 3h) is provided, the end plate (5a) has a predetermined length from the end plate (5a) of various heat exchangers (5) having different positions. The basic position and basic depth of the flare formation in the case where the same flare processing is always formed at a constant depth at the tube mouth portion (7b) of the protruding pipe (7) is set easily and reliably as appropriate. There is an effect that the heat exchanger (5) having the flare processing of the same shape at the position and depth can be efficiently manufactured in large quantities.

  Furthermore, this invention provides the manufacturing method of the air conditioner (20) which has the heat exchanger (5) manufactured by each said manufacturing method, and is full length etc. in the longitudinal direction of a pipe | tube (7). Even when the positions of the end plates (5a) of different heat exchangers (5) are appropriately different depending on the various heat exchangers (5), pipes (7) protruding from the end plates (5a) with a predetermined length (7) The heat exchanger (5) in which the same shape of flare processing is formed at a depth from the end plate (5a) to the same position of the pipe (7) regardless of the protrusion length of A high-quality heat exchanger that can be manufactured and therefore can reduce not only the ease of quality control but also the occurrence of defects such as water leaks when brazing a bend pipe or the like to the flared portion ( 5) Spread the air conditioner (20) with There is an effect that theft can be.

  Furthermore, this invention provides the outdoor unit (21) used for the air conditioner (20) which has the heat exchanger (5) manufactured by each said manufacturing method, and is the length of a pipe | tube (7). Even when the positions of the end plates (5a) of the various heat exchangers (5) having different overall lengths in the directions differ depending on the various heat exchangers (5), the end plates (5a) have a predetermined length. Regardless of the projecting length of the projecting tube (7), a heat exchanger in which the same shape of flaring is formed at a depth from the end plate (5a) to the same position of the tube (7) spaced apart from the end plate (5a) ( 5) can be manufactured efficiently, and therefore, not only the quality control is easy when brazing a bend pipe etc. to the flare processing part, but also the occurrence of defects such as water leakage is reduced. The air conditioner (20) with the heat exchanger (5) Need be the outdoor unit (21) is an effect that can be spread in the market.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted schematic explanatory view of a heat exchanger manufacturing apparatus for carrying out an air conditioner manufacturing method and / or an outdoor unit manufacturing method used in the air conditioner of the present invention. The heat exchanger manufactured with the manufacturing apparatus of the heat exchanger for enforcing the manufacturing method of the air conditioner of this invention and / or the manufacturing method of the outdoor unit used for this air conditioner is shown, FIG. Is an air conditioner equipped with a heat exchanger, and (b) is an outdoor unit used in an air conditioner equipped with a heat exchanger.

  Hereinafter, a manufacturing apparatus of a heat exchanger for carrying out a manufacturing method of an air conditioner in the present invention and / or a manufacturing method of an outdoor unit used in the air conditioner will be described with reference to the drawings. To the tube expansion device (Japanese Patent Laid-Open No. 2002-205134) described in the prior art (the tube expansion device provided with the reference base A and capable of setting the projection length of the tube 7 from the end plate 5a via the gripping body base 3h described later) Japanese Patent Application Laid-Open No. 2000-301271 (a first plate body 3h (hereinafter, referred to as a gripping body base 3h) having a gripping body 3 having a plurality of pipe contact members 3f) and externally fitted to the gripping body 3 A gripper sliding means for sliding is provided, and by moving to the heat exchanger 5 side, each of the plurality of tube contact members 3f is reduced in diameter, and the expanded portion 7d is replaced with the plurality of tube contact members 3f. To hold the second plate body 3d (hereinafter referred to as a sliding base). And a flare plate (hereinafter referred to as flare base B) for press-fitting the flare punch 10 into the expanded portion 7d on the side of the tube opening 7b and applying a predetermined flare processing 7j. Hereinafter, description of each part will be made using the numbers of each part of JP-A-2000-301271, and description of overlapping parts, operation, etc. will be omitted below.

  In FIG. 1, reference numeral 1 denotes a heat exchanger manufacturing apparatus having an enlarged main part. The manufacturing apparatus 1 connects the pipe 7 from the tube opening 7 b side of the pipe 7 protruding from the end plate 5 a of the heat exchanger 5. A tube mandrel 2 having a predetermined length that can be expanded by a predetermined length is provided in a reciprocating manner, and radially in a direction intersecting with the longitudinal direction of the tube 7 from the tube opening 7b side of the tube 7 protruding from the end plate 5a. A gripping body 3 having a plurality of tube abutting members 3f that can be expanded and contracted, has a surface portion that radially expands in the direction of the tube 7 side, and can cover the tube 7 is provided. A first reciprocating means (not shown) using a gripper base 3h and various cylinders or various ball screws using a hydraulic pressure or a motor for moving the gripper base 3h to the heat exchanger 5 side. ) And the heat exchanger 5 side through the first reciprocating means In order to stop the movement of the gripping body base 3h to the heat exchanger 5 side by abutting the moving gripping base 3h, and to set the projecting length of the tube 7 projecting from the end plate 5a, the motor A reference table A which can be reciprocated via a second reciprocating means (not shown) using various ball screws or cylinders driven via the reference table A, and the gripper base 3h. A third means using various ball screws or cylinders between the lock means Ab, such as a lock pin, which is driven removably through a motor or the like to hold and hold, and between the end plate 5a and the grip base 3h. A reciprocating means (not shown) is provided, and a gripping body sliding means Xa that can be fitted and slid on the gripping body 3 having the plurality of pipe contact members 3f is provided, and The gripper sliding means Xa is moved to the third reciprocating means. The tube expansion portion of a predetermined length formed through the tube expansion mandrel 2 by reducing the diameter of each of the plurality of tube contact members 3f by moving C1 to the heat exchanger 5 side via the tube expansion mandrel 2 (not shown). 7d is held by a plurality of tube contact members 3f, and the gripper sliding means Xa is retracted C2 from the heat exchanger 5 via a third reciprocating means (not shown). A sliding base 3d provided with the gripping body sliding means Xa and a predetermined distance behind the gripping body base 3h to release the pipe from the gripping of the tube contact member 3f. A flare base B having a flare pipe 10a having a predetermined length provided with a flare punch 10 for flaring at the tip, and the flare base B and the gripping body base. 3h and pull each other at a certain distance It is provided with a connecting and pulling force generating means Xb for generating a pulling force in the approaching direction.

Next, a method for manufacturing a heat exchanger using the heat exchanger manufacturing apparatus having the above-described configuration will be described.
The first manufacturing method includes a heat exchanger (5) including a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates. In addition, the tube (7) protruding from the end plate (5a) is radially expandable / contractable in the direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side, and the tube (7) side on the outer peripheral portion. A grip body base having a grip portion (3) having a plurality of tube abutting members (3f) having a surface portion that radially expands in a direction and capable of covering the tube (7). 3h) is moved to the heat exchanger (5) side, and then the moving grip base (3h) is moved to the reference stand (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). The gripper base (3h) is moved to the heat exchanger (5) side by abutting (Aa). After stopping, the holding base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the tube port of the pipe (7) protruding from the end plate (5a) After the pipe expansion mandrel (2), which is reciprocated into the gripping body (3) from the section (7b), is press-fitted with a predetermined dimension to form a pipe expansion section (7d) having a predetermined length, the end plate ( 5a) and a gripping body sliding means (between the gripping body base (3h) and externally sliding on the gripping body (3) having the plurality of pipe contact members (3f). The sliding base (3d) provided with Xa) is moved (C1) toward the heat exchanger (5), thereby reducing the diameter of each of the plurality of tube abutting members (3f) and expanding the tube (7d). Is held by a plurality of tube contact members (3f), and then the tube expansion mandrel (2) is advanced again to expand the tube (7). Then, the sliding base (3d) is retracted (C2) from the heat exchanger (5) to release the expanded portion (7d) from the grip of the tube contact member (3f), and then the grip base (3h) A flare punch (10) for flaring is provided at the tip of the tube (3) at a rear end with a predetermined length so as to be fitted to the tube expansion mandrel (2) in the holding body (3). The flare base (B) having the provided flare pipe (10a) connects the flare base (B) and the gripping body base (3h), and generates a pulling force in a direction that pulls them apart at a certain distance. It is always drawn at a fixed distance to the gripper base (3h) side fixed and held to the reference base (A) via the locking means via the connecting and pulling force generating means (C3). ) Flare punch (10) from the expanded pipe (7d) side By press-fitting, the pipe (7) that protrudes from the end plate (5a) of the heat exchanger (5) reaches the same position of the pipe (7) that is spaced apart from the end plate (5a) regardless of the protruding length of the pipe (7). Predetermined flare processing (7j) is performed from the pipe opening (7b) of the pipe (7), and then each of the flare base (B), the gripping body base (3h) and the sliding base (3d) is a heat exchanger ( 5) Since the heat exchanger is manufactured by escaping from the flare base (B), the flare base (B) to be flare processed can always be pulled and moved to the gripping body base (3h) side, Therefore, the total length of the heat exchanger (5) varies depending on the position of the tube opening (7b) of the pipe (7) of the heat exchanger (5) for expanding the pipe (the length of the pipe used for the heat exchanger for expanding the pipe). , And therefore the position of the end plate changes) Even if it varies depending on the type of 5), not only an adjustment device for adjusting the stop position of the flare base (flare plate) is required, but also the length of the tube (7) can be reduced while eliminating any complicated adjustment work. Regardless of the projecting length of the tube (7) projecting from the end plate (5a) of various heat exchangers (5) where the position of the end plate (5a) is appropriately changed over the entire length, etc. The heat exchanger (5) in which the flare processing of the same shape is formed at a depth up to the same position of the pipe (7) that is separated from each other can be effectively manufactured.

  Further, in the second manufacturing method, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of them. In addition, the tube (7) protruding from the end plate (5a) is radially expandable / contractable in the direction intersecting with the longitudinal direction of the tube (7) from the tube opening (7b) side, and the tube (7) is disposed on the outer peripheral portion. A gripping body base having a gripping body (3) having a plurality of pipe abutting members (3f) having a surface portion radially expanding toward the side and capable of covering the pipe (7) (3h) is moved to the heat exchanger (5) side, and then the reference base (A) for setting the projecting length of the pipe (7) projecting the gripping body base (3h) projecting from the end plate (5a) To the heat exchanger (5) side of the gripper base (3h) After stopping the movement, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the pipe of the pipe (7) protruding from the end plate (5a) After the tube expansion mandrel (2), which is reciprocated into the gripping body (3) from the mouth (7b), is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the end plate A gripping body sliding means provided between the gripping body base (3h) and externally sliding on the gripping body (3) having the plurality of pipe contact members (3f). The sliding base (3d) provided with (Xa) is moved (C1) toward the heat exchanger (5), thereby reducing the diameter of each of the plurality of tube contact members (3f) and expanding the tube (7d). ) Is held by a plurality of tube abutting members (3f), and then the tube expansion mandrel (2) is advanced again to expand the tube (7). In addition, it exists behind the gripping body base (3h) through a predetermined distance, and has a predetermined length as much as possible to be fitted to the tube expansion mandrel (2) in the gripping body (3). A flare base (B) having a flare pipe (10a) with a flare punch (10) for flare processing is connected to the flare base (B) and the gripping body base (3h), and at a fixed distance from each other. Through the connecting and pulling force generating means that generates a pulling force in the direction of pulling in between, the gripper base (3h) side that is fixedly held by the reference base (A) via the locking means is always pulled at a constant distance. (C3) By inserting the flare punch (10) from the expanded pipe (7d) on the side of the pipe opening (7b), the protruding length of the pipe (7) protruding from the end plate (5a) of the heat exchanger (5) Regardless of the end plate (5a) A predetermined flaring process (7j) is performed from the pipe opening (7b) of the pipe (7) until it reaches the same position of the pipe (7) separated by a fixed distance, and then the sliding base (3d) is attached to the heat exchanger (5 ) From the gripping of the tube abutting member (3f), the flare base (B), the gripping body base (3h) and the sliding base (3d) Since the heat exchanger is manufactured by escaping each from the heat exchanger (5), the flare base (B) to be flared is always drawn toward the holding body base (3h) at a constant distance. Compared with the total process time in which secondary and tertiary flare expansion is performed after the primary expansion by performing the moving process during the process of expanding the pipe (7) by the expansion mandrel (2) (during the primary expansion). The total process time can be shortened to about half, which is the ultimate in production efficiency. In addition to the effect that a high tube expansion process can be realized, the position of the port (7b) of the tube (7) of the heat exchanger (5) that performs the tube expansion (used for the heat exchanger that performs the tube expansion) Even if the total length of the heat exchanger (5) changes depending on the length of the pipe to be changed and the position of the end plate changes) depending on the type of the heat exchanger (5), the flare base (flare) Not only an adjustment device for adjusting the stop position of the plate (plate) but also a complicated adjustment operation is required, and various positions of the end plate (5a) are appropriately changed through the entire length of the pipe (7). Regardless of the protruding length of the tube (7) protruding from the end plate (5a) of the heat exchanger (5), the depth from the end plate (5a) to the same position of the tube (7) separated by a certain distance The same shape of flare processing was formed It provides the exceptional effect that exchanger (5) can be efficiently produced.

  Further, in the third manufacturing method, the heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of them. In addition, the tube (7) protruding from the end plate (5a) is radially expandable / contractable in the direction intersecting with the longitudinal direction of the tube (7) from the tube opening (7b) side, and the tube (7) is disposed on the outer peripheral portion. A gripping body base having a gripping body (3) having a plurality of pipe abutting members (3f) having a surface portion radially expanding toward the side and capable of covering the pipe (7) (3h) is moved to the heat exchanger (5) side, and then the reference base (A) for setting the projecting length of the pipe (7) projecting the gripping body base (3h) projecting from the end plate (5a) To the heat exchanger (5) side of the gripper base (3h) After stopping the movement, the gripper base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the pipe of the pipe (7) protruding from the end plate (5a) When a tube expansion mandrel (2) that exists in a reciprocating manner in the gripping body (3) from the mouth (7b) is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the tube The flare base (B) having a flare pipe (10a) provided with a flare punch (10) for flare processing at the tip at the mouth (7b) is moved to the heat exchanger (5) side to move the flare punch (10). The abutment is maintained between a part of the distal end entering the tube opening (7b) and then provided between the end plate (5a) and the gripper base (3h), and the plurality of tube abutments Grasping body sliding means (fitting and sliding on the gripping body (3) having the member (3f) The sliding base (3d) provided with a) is moved (C1) toward the heat exchanger (5), thereby reducing the diameter of each of the plurality of tube contact members (3f) and expanding the tube (7d). Is held by a plurality of tube abutting members (3f), and then the tube expansion mandrel (2) is advanced again to expand the tube (7), and then a predetermined distance is set rearward from the holding body base (3h). And a flare pipe (10a) provided with a flare punch (10) for flaring at the tip while having a predetermined length so as to be fitted into the tube expansion mandrel (2) in the holding body (3). The flare base (B) having the above-mentioned is connected to the flare base (B) and the gripping body base (3h), and generates a tensile force in the direction of pulling each other at a certain distance. Fixed to the reference table (A) via the locking means. The heat exchanger (5) by always pulling it toward the holding base (3h) side at a constant distance (C3) and press-fitting the flare punch (10) from the expanded portion (7d) on the side of the tube opening (7b). Regardless of the protruding length of the tube (7) protruding from the end plate (5a), the predetermined flare processing (7j) is performed until the tube (7) is located at a certain distance from the end plate (5a) until it reaches the same position. 7), and then the sliding base (3d) is retracted (C2) from the heat exchanger (5) to hold the expanded portion (7d) by the tube abutting member (3f). Since the heat exchanger is manufactured by releasing each of the flare base (B), the gripping body base (3h), and the sliding base (3d) from the heat exchanger (5) The gripper base (3h) side Before the step of always pulling and moving at a constant distance, a mandrel for expanding the pipe while maintaining a contact while a part of the tip of the flare punch (10) of the flare base (B) enters the pipe opening (7b). (2) is performed during the process of expanding the pipe (7) (during the primary expansion) or after the expansion (after the primary expansion), so that the tube opening (7b) and the tip of the flare punch (10) It is possible to avoid the contact impact in advance, and thus it is possible to prevent the pipe opening (7b) from being deformed by galling or the like and damaging the flare punch (10), and therefore the defect rate is extremely low. Not only can heat exchangers be manufactured, but the total process time can be shortened compared to the total process time for secondary and tertiary flare pipe expansion after the primary pipe expansion. The effect of being able to be realized As well as the position of the tube opening (7b) of the tube (7) of the heat exchanger (5) for expanding the tube (the heat exchanger (5) depending on the length of the tube used for the heat exchanger for expanding the tube) No adjustment device is required to adjust the stop position of the flare base (flare plate) even if the total length of the plate changes and the end plate position changes depending on the type of heat exchanger (5). In addition, the end plate (5a) of various heat exchangers (5) where the position of the end plate (5a) is appropriately changed via the entire length of the pipe (7) and the like without any complicated adjustment work. Heat exchanger in which flare processing of the same shape is formed at a depth from the end plate (5a) to the same position of the pipe (7) regardless of the protruding length of the pipe (7) protruding from the pipe (5) can be manufactured efficiently Has an exceptional effect.

  Therefore, according to each of the above manufacturing methods, for example, each of the tubes (7) inserted in a zigzag manner in the heat dissipating fins of the heat exchanger (5) has a plurality of rows such as three rows, four rows, and the like. Even in this case, not only can the tube (7) positioned on the inner side reliably and firmly be held in the same manner as the tube (7) positioned on the outer side, but also the heat for expanding the tube. Even if the pipe diameter of the pipe (7) of the exchanger (5) changes depending on the specification type of the heat exchanger (5), the pipe mouth (7b) side of the pipe (7) is securely and firmly attached. The holding body (3) having a plurality of pipe contact members (3f) can be held, and complicated flare processing can be applied to the pipe (7) in the same process.

  Furthermore, in each of the above inventions, when the gripper base (3h) is moved to the heat exchanger (5) side, the tip of the tube contact member (3f) is connected to the end plate (5a) of the heat exchanger (5). The tube abutting member (3f) is further moved to the heat exchanger (5) side through the gripper base (3h) while maintaining the abutted state. When the protrusion length from the end plate (5a) of the pipe (7) is set by bringing the holding base (3h) into contact with the reference base (A) (Aa), the heat exchanger (5 ), The position of the end plate (5a) and the position of the tube (7) protruding from the end plate (5a) always through the reference table (A) that can reciprocate. There is an effect that the protruding length can always be easily and reliably maintained.

  Furthermore, in each of the above inventions, the flare base (B) and the gripping body base (at the time of flare processing) are connected to at least one of the coupling / tensile force generating means, the flare base (B) and / or the gripping body base (3h). The position of the end plate (5a) can be adjusted if distance adjustment means (not shown) using a combination of bolts and nuts or a ball screw is provided. The flare punch (10) is press-fitted from the expanded portion (7d) on the tube opening (7b) side of the tube (7) protruding from the end plate (5a) of various heat exchangers (5) with different lengths. Thus, the pipe (7) protruding from the end plate (5a) of the heat exchanger (5) has a predetermined distance until it reaches the same position of the pipe (7) spaced apart from the end plate (5a) by a predetermined distance. Flare processing ( j) is applied from the tube opening (7b) of the pipe (7) to form the same shape of the flare, and the end position (5a) Regardless of the protruding length of the tube (7) protruding from the end plate (5a), the heat exchanger (5) having the same flared shape at the same position of the tube (7) that is always a fixed distance away from the end plate (5a) There is an effect that it can be manufactured.

  Furthermore, this invention provides the air conditioner (20) which has the heat exchanger (5) manufactured by each said manufacturing method, Therefore various lengths etc. which differ in the longitudinal direction of a pipe | tube (7). Even when the position of the end plate (5a) of the heat exchanger (5) differs appropriately depending on the various heat exchangers (5), the pipe (7) protruding from the end plate (5a) by a predetermined length Regardless of the protrusion length, a predetermined flaring process (7j) is applied from the pipe opening (7b) of the pipe (7) until it reaches the same position of the pipe (7) spaced apart from the end plate (5a) by a constant distance. It is possible to form a flare processing of the shape, and therefore, not only the quality control is easy when brazing a bend pipe etc. to the flare processing portion, but also the occurrence of defects such as water leakage can be reduced. Air conditioner (20 with quality heat exchanger (5) The there is an effect that can be spread in the market.

  Furthermore, this invention provides the outdoor unit (21) used for the air conditioner (20) which has the heat exchanger (5) manufactured by said each manufacturing method, Therefore, pipe | tube (7) Even when the positions of the end plates (5a) of various heat exchangers (5) having different overall lengths in the longitudinal direction are appropriately different depending on the various heat exchangers (5), a predetermined length from the end plate (5a). Regardless of the projecting length of the tube (7) projecting at the end of the tube (7), a predetermined flaring process (7j) is carried out until it reaches the same position of the tube (7) that is spaced a certain distance from the end plate (5a). (7b) can always be used to form a flare with the same shape. Therefore, not only is it easy to control quality when brazing a bend pipe or the like to the flare processing part, but also water leaks, etc. Quality heat exchanger (5 Outdoor unit for use in a have air conditioner (20) and (21) an effect that can be spread in the market.

  Furthermore, the pipe expansion device for realizing the method for manufacturing a heat exchanger according to the present invention does not necessarily have to be a vertical tube expansion apparatus, and may be a so-called horizontal apparatus device. Needless to say, the number, arrangement, and location of the gripping bodies having the tube abutting members are not limited. Furthermore, the flare base, the gripping body base, the sliding base, the reference base, and the gripping body slide are not limited. The specific shape and structure of the moving means are not limited, and various cylinders and various types using hydraulics or motors for the first to third reciprocating means as well as the connecting and pulling force generating means. Although the case where a ball screw or the like is used has been described, the specific structure, shape, power source, etc. of each means are not limited in any way, and the specific structure of the distance adjusting means is also included. Arbitrarily set within the intended range It is of course free to change.

  The present invention can not only keep the total length of the hairpin tube or straight tube to be expanded substantially the same as before the expansion, but even if the position of the end plate differs appropriately depending on the type of heat exchanger, etc. Regardless of the protruding length of the tube protruding from the end plate, the predetermined flare processing can be performed from the tube mouth portion of the tube until reaching the same position of the tube separated from the end plate by a certain distance, When performing flare processing, the conventional complicated position adjustment and expensive adjustment devices are no longer necessary, and flare processing can always be performed efficiently on the same primary pipe expansion process, and always at a constant distance from the end plate. If it is only easy to quality control in the case where a bend pipe or the like is brazed to the flare processed part by applying a predetermined flare process from the pipe mouth part of the pipe to the same position of the separated pipes Also water leakage defects such as occurrence of such a manufacturing method of the outdoor unit for use in the production method of an air conditioner having a high-quality heat exchanger which can be reduced and / or the air conditioner.

A ... Reference base B ... Flare base 1 ... Heat exchanger manufacturing device 2 ... Tube expansion mandrel 3 ... Grasping body 3d ... Sliding base 3f ... Pipe contact member 3h ... Grasping body base 5 ... Heat exchanger 5a ... End plate 7 ... Tube 10 ... Flare punch

Claims (4)

  The heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5a). A surface portion that is radially expandable / contractable in a direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side of the protruding tube (7) and radially expands toward the tube (7) side direction on the outer peripheral portion. And a gripping body base (3h) comprising a gripping body (3) having a plurality of pipe abutting members (3f) capable of covering the pipe (7). ) Side, and then the moving grip base (3h) is brought into contact (Aa) with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). After stopping the gripper base (3h) toward the heat exchanger (5), the gripper base (3h) The body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the gripping body is formed from the tube opening (7b) of the pipe (7) protruding from the end plate (5a). (3) After the tube expansion mandrel (2) that is reciprocally present in the tube is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the end plate (5a) and the gripper base (3h) ) And a sliding base having gripping body sliding means (Xa) that fits and slides on the gripping body (3) having the plurality of tube contact members (3f). 3d) is moved to the heat exchanger (5) side (C1), thereby reducing the diameter of each of the plurality of tube contact members (3f), thereby expanding the expanded portion (7d) to the plurality of tube contact members (3f). ), And then the tube expansion mandrel (2) is advanced again to expand the tube (7), and then the sliding base (3d) By retracting (C2) from the heat exchanger (5), the expanded portion (7d) is released from the grip of the tube abutting member (3f) and then rearward from the grip base (3h) via a predetermined distance. And a flare pipe (10a) having a flare punch (10) for flaring at the tip while having a predetermined length so as to be fitted into the tube expansion mandrel (2) in the gripping body (3). The flare base (B) having the connecting and pulling force generating means for connecting the flare base (B) and the gripping body base (3h) and generating a tensile force in a direction of pulling each other at a certain distance. Through the gripper base (3h), which is fixedly held on the reference base (A) via the locking means, and is always drawn at a fixed distance (C3) The pipe expansion part (7d) on the pipe port part (7b) side Heat exchanger by press-fitting flare punch (10) from Regardless of the protruding length of the pipe (7) protruding from the end plate (5a) of (5), a predetermined flaring process (7j) is performed until the pipe (7) is located at a fixed distance from the end plate (5a). Is produced from the tube opening (7b) of the pipe (7), and then the flare base (B), the gripping body base (3h) and the sliding base (3d) are each escaped from the heat exchanger (5). The bend pipe is brazed to the flared portion of the heat exchanger (5), and the pipe is then spaced apart from the end plate (5a) by a fixed distance regardless of the protruding length of the pipe (7) protruding from the end plate (5a). A method for producing an air conditioner, comprising producing an air conditioner (20) having a heat exchanger (5) having a bend pipe brazed at the same position of (7).   The heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5a). A surface portion that is radially expandable / contractable in a direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side of the protruding tube (7) and radially expands toward the tube (7) side direction on the outer peripheral portion. And a gripping body base (3h) comprising a gripping body (3) having a plurality of pipe abutting members (3f) capable of covering the pipe (7). ) Side, and then the moving grip base (3h) is brought into contact (Aa) with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). After stopping the gripper base (3h) toward the heat exchanger (5), the gripper base (3h) The body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the gripping body is formed from the tube opening (7b) of the pipe (7) protruding from the end plate (5a). (3) After the tube expansion mandrel (2) that is reciprocally present in the tube is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the end plate (5a) and the gripper base (3h) ) And a sliding base having gripping body sliding means (Xa) that fits and slides on the gripping body (3) having the plurality of tube contact members (3f). 3d) is moved to the heat exchanger (5) side (C1), thereby reducing the diameter of each of the plurality of tube contact members (3f), thereby expanding the expanded portion (7d) to the plurality of tube contact members (3f). ), And then the mandrel for tube expansion (2) is advanced again to expand the tube (7), A flare punch (10) for flaring is provided at the tip of the tube (3) at a rear end with a predetermined length so as to be fitted to the tube expansion mandrel (2) in the holding body (3). The flare base (B) having the provided flare pipe (10a) connects the flare base (B) and the gripping body base (3h), and generates a pulling force in a direction that pulls them apart at a certain distance. It is always drawn at a fixed distance to the gripper base (3h) side fixed and held to the reference base (A) via the locking means via the connecting and pulling force generating means (C3). ) The flared punch (10) is press-fitted from the expanded pipe portion (7d) on the side, and is constant from the end plate (5a) regardless of the protruding length of the tube (7) protruding from the end plate (5a) of the heat exchanger (5). Tube (7) spaced apart by A predetermined flaring process (7j) is performed from the pipe opening (7b) of the pipe (7) until the same position is reached, and then the sliding base (3d) is retracted (C2) from the heat exchanger (5). The expanded pipe portion (7d) is released from the gripping of the tube abutting member (3f), and the flare base (B), the gripping body base (3h) and the sliding base (3d) are each replaced with a heat exchanger (5). A bend pipe is brazed to the flared portion of the heat exchanger (5) manufactured by escaping from the end plate (5a), and then fixed from the end plate (5a) regardless of the protruding length of the pipe (7) protruding from the end plate (5a). The air conditioner (20) is manufactured by having a heat exchanger (5) having a bend pipe brazed at the same position of the pipe (7) that is spaced apart from each other. Method.   The heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5a). A surface portion that is radially expandable / contractable in a direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side of the protruding tube (7) and radially expands toward the tube (7) side direction on the outer peripheral portion. And a gripping body base (3h) comprising a gripping body (3) having a plurality of pipe abutting members (3f) capable of covering the pipe (7). ) Side, and then the moving grip base (3h) is brought into contact (Aa) with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). After stopping the gripper base (3h) toward the heat exchanger (5), the gripper base (3h) The body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the gripping body is formed from the tube opening (7b) of the pipe (7) protruding from the end plate (5a). (3) After the tube expansion mandrel (2) that is reciprocally present in the tube is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the end plate (5a) and the gripper base (3h) ) And a sliding base having gripping body sliding means (Xa) that fits and slides on the gripping body (3) having the plurality of tube contact members (3f). 3d) is moved to the heat exchanger (5) side (C1), thereby reducing the diameter of each of the plurality of tube contact members (3f), thereby expanding the expanded portion (7d) to the plurality of tube contact members (3f). ), And then the tube expansion mandrel (2) is advanced again to expand the tube (7), and then the sliding base (3d) By retracting (C2) from the heat exchanger (5), the expanded portion (7d) is released from the grip of the tube abutting member (3f) and then rearward from the grip base (3h) via a predetermined distance. And a flare pipe (10a) having a flare punch (10) for flaring at the tip while having a predetermined length so as to be fitted into the tube expansion mandrel (2) in the gripping body (3). The flare base (B) having the connecting and pulling force generating means for connecting the flare base (B) and the gripping body base (3h) and generating a tensile force in a direction of pulling each other at a certain distance. Through the gripper base (3h), which is fixedly held on the reference base (A) via the locking means, and is always drawn at a fixed distance (C3) The pipe expansion part (7d) on the pipe port part (7b) side Heat exchanger by press-fitting flare punch (10) from Regardless of the protruding length of the pipe (7) protruding from the end plate (5a) of (5), a predetermined flaring process (7j) is performed until the pipe (7) is located at a fixed distance from the end plate (5a). Is produced from the tube opening (7b) of the pipe (7), and then the flare base (B), the gripping body base (3h) and the sliding base (3d) are each escaped from the heat exchanger (5). The bend pipe is brazed to the flared portion of the heat exchanger (5), and the pipe is then spaced apart from the end plate (5a) by a fixed distance regardless of the protruding length of the pipe (7) protruding from the end plate (5a). An air conditioner characterized by producing an outdoor unit (21) of an air conditioner (20) having a heat exchanger (5) equipped with a bend pipe brazed at the same position of (7) The manufacturing method of the outdoor unit used.   The heat exchanger (5) includes a plurality of radiating fins (6), an end plate (5a) sandwiching the plurality of radiating fins, and a pipe (7) inserted through each of the end plates (5a). A surface portion that is radially expandable / contractable in a direction intersecting the longitudinal direction of the tube (7) from the tube opening (7b) side of the protruding tube (7) and radially expands toward the tube (7) side direction on the outer peripheral portion. And a gripping body base (3h) comprising a gripping body (3) having a plurality of pipe abutting members (3f) capable of covering the pipe (7). ) Side, and then the moving grip base (3h) is brought into contact (Aa) with the reference base (A) for setting the protruding length of the tube (7) protruding from the end plate (5a). After stopping the gripper base (3h) toward the heat exchanger (5), the gripper base (3h) The body base (3h) and the reference base (A) are fixedly held via the locking means (Ab), and then the gripping body is formed from the tube opening (7b) of the pipe (7) protruding from the end plate (5a). (3) After the tube expansion mandrel (2) that is reciprocally present in the tube is press-fitted in a predetermined size to form a tube expansion portion (7d) having a predetermined length, the end plate (5a) and the gripper base (3h) ) And a sliding base having gripping body sliding means (Xa) that fits and slides on the gripping body (3) having the plurality of tube contact members (3f). 3d) is moved to the heat exchanger (5) side (C1), thereby reducing the diameter of each of the plurality of tube contact members (3f), thereby expanding the expanded portion (7d) to the plurality of tube contact members (3f). ), And then the mandrel for tube expansion (2) is advanced again to expand the tube (7), A flare punch (10) for flaring is provided at the tip of the tube (3) at a rear end with a predetermined length so as to be fitted to the tube expansion mandrel (2) in the holding body (3). The flare base (B) having the provided flare pipe (10a) connects the flare base (B) and the gripping body base (3h), and generates a pulling force in a direction that pulls them apart at a certain distance. It is always drawn at a fixed distance to the gripper base (3h) side fixed and held to the reference base (A) via the locking means via the connecting and pulling force generating means (C3). ) The flared punch (10) is press-fitted from the expanded pipe portion (7d) on the side, and is constant from the end plate (5a) regardless of the protruding length of the tube (7) protruding from the end plate (5a) of the heat exchanger (5). Tube (7) spaced apart by A predetermined flaring process (7j) is performed from the pipe opening (7b) of the pipe (7) until the same position is reached, and then the sliding base (3d) is retracted (C2) from the heat exchanger (5). The expanded pipe portion (7d) is released from the gripping of the tube abutting member (3f), and the flare base (B), the gripping body base (3h) and the sliding base (3d) are each replaced with a heat exchanger (5). A bend pipe is brazed to the flared portion of the heat exchanger (5) manufactured by escaping from the end plate (5a), and then fixed from the end plate (5a) regardless of the protruding length of the pipe (7) protruding from the end plate (5a). The outdoor unit (21) of the air conditioner (20) has a heat exchanger (5) having a bend pipe brazed at the same position of the pipe (7) separated by a distance of Manufacturing method of outdoor unit used for air conditioner.