JP2015227737A - Heat exchanger header - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce materials constituting a header without causing deformation in a peripheral wall part of the header and reliably fix a plate material to the peripheral wall part.SOLUTION: The peripheral wall part of the header 10 is configured by combining a header member 11 with a tank member 12. The plate material 13 disposed inside of the peripheral wall part includes a first engaging claw 31 and a second engaging claw 32 both projecting so as to penetrate through the header member 11 and separated apart from each other in a circumferential direction of the peripheral wall part. The first engaging claw 31 and the second engaging claw 32 are swaged so as to be bent on an outside of the peripheral wall part and brazed to the peripheral wall part.

Description

  The present invention relates to a heat exchanger header provided in, for example, a heat exchanger used in an air conditioner.

  Conventionally, for example, a heat exchanger for heating or cooling air-conditioning air is used in an air-conditioning apparatus. As this type of heat exchanger, for example, as disclosed in Patent Documents 1 and 2, a heat exchanger having a number of tubes and a header connected to an end portion of the tubes is known. The headers of Patent Documents 1 and 2 have a cylindrical shape extending in the tube arrangement direction, a header member located on the tube side, a tank member located on the opposite tube side opposite to the tube, and an inside of the header. The board material provided is provided. A number of slit-like tube insertion holes into which the end portions of the tubes are inserted are formed in the header member.

  The edge part of the header member of Patent Document 1 is fitted to the tank member. Further, the tank member has a through-hole formed in a portion corresponding to the place where the plate material is disposed. One protrusion protruding from the peripheral edge of the plate material is inserted into the through hole. The protrusion of the plate material protrudes from the outer peripheral surface of the header while being inserted into the through hole of the tank member. The tip of the protrusion is caulked to the tank member.

  In addition, a large number of caulking pieces are formed on the edge portion extending in the longitudinal direction of the tank member of Patent Document 2 so as to extend from the edge portion. These caulking pieces are caulked to the outer surface of the header member.

Japanese Patent Application Laid-Open No. 11-182977 JP 2003-28593 A

  By the way, in Patent Document 1, since there is only one protrusion caulking the tank member, the plate member is fixed to the tank member only at one place. For this reason, there is a possibility that the plate member cannot be securely fixed to the tank member. As a result, it is conceivable that the tank member is displaced with respect to the header member before brazing. Further, when caulking the projection of the plate material, it is necessary to crush it by hitting it from the outside of the header. At that time, it is considered that a large force acts on the tank member and the tank member is deformed.

  On the other hand, in Patent Document 2, since a large number of caulking pieces are provided at the edge of the tank member, the tank member is unlikely to be displaced with respect to the header member. However, the caulking piece has a plate shape extending from the edge of the tank member, and since many caulking pieces are provided, a large amount of material is required for providing the caulking pieces, resulting in an increase in weight and cost. become.

  The present invention has been made in view of such points, and the object of the present invention is to reduce the material constituting the header and to add a plate material to the peripheral wall portion without causing deformation of the peripheral wall portion of the header. It is to be able to fix it securely.

  In order to achieve the above object, in the present invention, a plurality of engagement claw portions are provided on the plate material, and the engagement claw portions are caulked by being bent through the peripheral wall portion of the header.

The first invention is
In the header for the cylindrical heat exchanger to which the end of the tube through which the heat exchange medium flows is connected,
The peripheral wall portion of the header is configured by combining a first member located on the tube side and a second member located on the opposite tube side opposite to the tube,
Inside the peripheral wall portion, a plate material is disposed,
The plate member has a first engagement claw portion and a second engagement claw portion protruding so as to penetrate at least one of the first member and the second member and spaced apart from each other in the circumferential direction of the peripheral wall portion. Provided,
The first engaging claw portion and the second engaging claw portion are bent and caulked outside the peripheral wall portion, and are brazed to the peripheral wall portion.

  According to this structure, since the 1st engagement claw part and the 2nd engagement claw part of a board | plate material are caulked in the site | part which mutually separated in the circumferential direction of the surrounding wall part, caulking of several places is attained. As a result, since the plate material is securely fixed to the peripheral wall portion of the header, the caulking piece extending from the tank member as in the conventional example is not necessary, and the material can be reduced. Further, when caulking the first engagement claw portion and the second engagement claw portion, it is only necessary to bend the first engagement claw portion and the second engagement claw portion. It is not necessary to deform, and deformation of the peripheral wall portion of the header is suppressed.

The second invention is
The header for a heat exchanger according to claim 1,
A through hole into which the proximal end side of the first engagement claw portion is inserted is formed in the peripheral wall portion,
The width of the base end side of the first engagement claw portion is set wider than the width of the distal end side of the first engagement claw portion.

  According to this configuration, since the width on the base end side of the first engagement claw portion is wide, deformation of the first engagement claw portion is suppressed when the first engagement claw portion is inserted into the through hole of the peripheral wall portion. The Moreover, since the deformation | transformation of the base end side is suppressed when bending a 1st engagement nail | claw part, the force concerning the surrounding wall part of a header reduces.

According to a third invention, in the second invention,
A step is formed between the proximal end side and the distal end side of the first engaging claw portion.

  According to this configuration, when the first engaging claw portion is bent while being inserted into the through hole of the peripheral wall portion, it is possible to easily bend the portion where the step is formed as a starting point. Deformation on the proximal end side of the engaging claw portion is suppressed.

According to a fourth invention, in any one of the first to third inventions,
The peripheral wall portion is formed so as to curve outward of the header,
The first engagement claw portion and the second engagement claw portion are bent to the side approaching each other through the curved portion of the peripheral wall portion.

  According to this configuration, the pressure resistance of the header is increased by curving the peripheral wall portion. And since the 1st engagement nail | claw part and the 2nd engagement claw part are bent to the side which penetrates the curved part of a surrounding wall part and mutually approaches, a 1st engagement claw part and a 2nd engagement claw part The caulking force acts reliably on the peripheral wall portion.

According to a fifth invention, in the first or second invention,
A notch portion is formed between the proximal end side and the distal end side of the first engagement claw portion.

  According to this configuration, when the first engagement claw portion is bent, it is possible to easily bend the portion where the cutout portion is formed as a starting point. Deformation is suppressed.

A sixth invention is the invention according to any one of the first to fifth aspects,
The said board | plate material is arrange | positioned at the both ends of the longitudinal direction of the said surrounding wall part at least, It is characterized by the above-mentioned.

  According to this structure, it becomes possible to couple | bond a 1st member and a 2nd member using a board | plate material.

7th invention is the header for heat exchangers as described in 6th,
The said board | plate material arrange | positioned at the both ends of the longitudinal direction of the said surrounding wall part is the obstruction | occlusion board | plate material which obstruct | occludes the both ends side of the said surrounding wall part, It is characterized by the above-mentioned.

  According to this structure, it becomes possible to obstruct | occlude the both ends of a surrounding wall part using a board | plate material.

According to an eighth invention, in any one of the first to sixth inventions,
The plate member is disposed at least in an intermediate portion in the longitudinal direction of the peripheral wall portion and has an opening through which a heat exchange medium flows.

  According to this structure, it can prevent that a 1st member and a 2nd member open by arrange | positioning a board | plate material in the intermediate part of the longitudinal direction of a surrounding wall part. In such a case, it is conceivable that the plate material has an opening and is likely to be deformed. However, in the present invention, the first engaging claw and the second engaging claw are bent. Therefore, the force acting on the plate material to deform the portion where the opening is formed is smaller than in the case of being deformed by hitting from outside as in the conventional example. Therefore, deformation of the plate material can be prevented and it can be surely caulked, and deformation of the peripheral wall portion of the header can also be suppressed.

  According to the first invention, the plate member is provided with the first engagement claw portion and the second engagement claw portion, and the engagement claw portions are caulked by being bent while penetrating the peripheral wall portion of the header. Therefore, the plate material can be securely fixed to the peripheral wall portion without causing deformation of the peripheral wall portion of the header while reducing the material constituting the header.

  According to the second invention, since the width on the proximal end side of the first engagement claw portion is made wider than the width on the distal end side, the first engagement claw portion is inserted when the first engagement claw portion is inserted into the through hole of the peripheral wall portion. The deformation of the engaging claw portion can be suppressed and the caulking can be surely performed, and the force applied to the peripheral wall portion of the header when the first engaging claw portion is bent can be reduced to suppress the deformation of the peripheral wall portion.

  According to the third aspect, since the step is formed between the proximal end side and the distal end side of the first engagement claw portion, the first engagement claw portion can be easily bent. Thereby, since the deformation | transformation of the base end side of a 1st engagement nail | claw part can be suppressed, brazing failure can be suppressed.

  According to the fourth invention, since the first engagement claw portion and the second engagement claw portion are bent to the side approaching each other through the curved portion of the peripheral wall portion of the header, the first engagement claw The caulking force of the part and the second engaging claw part can be reliably applied to the peripheral wall part.

  According to the fifth aspect, since the notch portion is formed between the proximal end side and the distal end side of the first engagement claw portion, the first engagement claw portion can be easily bent. Thereby, since the deformation | transformation of the base end side of a 1st engagement nail | claw part can be suppressed, brazing failure can be suppressed.

  According to the sixth invention, since the plate material is disposed at least at both ends in the longitudinal direction of the peripheral wall portion, the first member and the second member can be coupled using the plate material.

  According to 7th invention, the both ends of a surrounding wall part can be obstruct | occluded using the board | plate material arrange | positioned at the both ends of the longitudinal direction of a surrounding wall part.

  According to the eighth aspect of the present invention, it is possible to prevent the first member and the second member from opening by disposing the plate material in the intermediate portion in the longitudinal direction of the peripheral wall portion. By bending and caulking the part and the second engaging claw part, it is possible to surely caulk while preventing deformation of the plate material, and thus deformation of the peripheral wall part of the header, and the effect of the first invention is further remarkable. It will be a thing.

It is a front view of the heat exchanger which concerns on embodiment of this invention. It is a disassembled perspective view of a header. It is the A section enlarged view in FIG. It is a top view of an upper side obstruction board material. (A) is the VV sectional view taken on the line of FIG. 1, (b) is the VV sectional view before caulking. It is the VI-VI sectional view taken on the line of FIG. It is an equivalent figure of Drawing 5 (b) concerning a modification.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is a front view of a heat exchanger 1 according to an embodiment of the present invention viewed from the downstream side in the flow direction of external air. This embodiment demonstrates the case where the heat exchanger 1 is a condenser of the vehicle air conditioner which is not shown in figure. Accordingly, the heat exchanger 1 liquefies gas refrigerant as a heat exchange medium by exchanging heat with external air. The present invention can be applied not only to a condenser but also to other various heat exchangers.

  The heat exchanger 1 includes a core 2, a right header 10 disposed on the right side in a front view, and a left header 20 disposed on the left side. In the description of this embodiment, the side that is right in the front view of the heat exchanger 1 is simply referred to as “right”, and the side that is left in the front view of the heat exchanger 1 is simply referred to as “left”.

  End plates 2 a are respectively disposed on the upper end portion and the lower end portion of the core 2. The upper and lower end plates 2a, 2a extend substantially parallel to each other in the left-right direction. The core 2 has a large number of fins 2b and tubes 2c disposed between the upper and lower end plates 2a, 2a. The end plate 2a, the fin 2b and the tube 2c are made of an aluminum alloy, and are brazed and integrated.

  The tube 2c is made of a tubular member through which a refrigerant flows and extends in the left-right direction. The tubes 2c are arranged at intervals in the vertical direction. The cross-sectional shape of the tube 2c is a shape that is long in the passing direction of the external air.

  The fin 2b is arrange | positioned between the tubes 2c and 2c adjacent up and down, and is extended in the left-right direction. The fin 2b is a corrugated fin having a wave shape when viewed from the air passing direction.

  The right header 10 is a cylindrical member to which the right end portion of the tube 2c is connected. As shown in FIG. 2, the peripheral wall portion of the right header 10 includes a header member (first member) 11 located on the tube 2c side, and a tank member (second member) located on the opposite tube side opposite to the tube 2c. Member) 12. Both the header member 11 and the tank member 12 are made of an aluminum alloy.

  The right header 10 further includes an upper closing plate member 13, a lower closing plate member 14, and an intermediate plate member 15. The upper closing plate member 13, the lower closing plate member 14, and the intermediate plate member 15 are made of an aluminum alloy and are disposed inside the right header 10.

  The upper closing plate 13 extends substantially horizontally, and is positioned between the uppermost tube 2 c of the core 2 and the upper end plate 2 a on the upper side of the peripheral wall portion of the right header 10, and above the peripheral wall portion of the right header 10. It is a member for closing.

  The lower closing plate 14 also extends substantially horizontally. The lower closing plate member 14 is positioned between the lowermost tube 2c of the core 2 and the lower end plate 2a on the lower side of the peripheral wall portion of the right header 10 and closes the lower side of the peripheral wall portion of the right header 10. It is a member for.

  The intermediate plate 15 also extends substantially horizontally. The intermediate plate member 15 is positioned between the adjacent tubes 2 c and 2 c in the intermediate portion in the vertical direction of the peripheral wall portion of the right header 10.

  The header member 11 has a halved shape that opens to the side opposite to the tube, and extends in the vertical direction from the upper end of the core 2 to the vicinity of the lower end. On both edge portions extending in the longitudinal direction (vertical direction) on the inner surface of the header member 11, fitting recesses 11a and 11a into which the tank member 12 is fitted are formed. The fitting recess 11 a is formed across the upper and lower ends of the header member 11. The part between both fitting recessed parts 11a and 11a of the header member 11 is the curved part 11b curved toward the tube 2c side.

  A large number of tube insertion holes 11c into which the right end portion of the tube 2c is inserted are formed in the curved portion 11b of the header member 11 at intervals in the vertical direction corresponding to the arrangement position of the tube 2c. The tube insertion hole 11c has a slit shape extending in the width direction of the header member 11 (external air flow direction) in the curved portion 11b. The right end portion of the tube 2c is in communication with the inside of the right header 10 while being inserted into the tube insertion hole 11c. The right end of the tube 2c is brazed to the peripheral edge of the tube insertion hole 11c.

  In the vicinity of the upper end of the curved portion 11b of the header member 11, an upper first through hole 11d is formed on the upstream side in the external air flow direction, and an upper second through hole 11e is formed on the downstream side in the external air flow direction. Has been. A header-side first engagement claw portion 31 and a header-side second engagement claw portion 32 of the upper closing member 13 described later are inserted into the upper first through-hole 11d and the upper second through-hole 11e, respectively. ing.

  Near the lower end of the curved portion 11b of the header member 11, a lower first through hole 11f is formed on the upstream side in the external air flow direction, and a lower second through hole 11g is formed on the downstream side in the external air flow direction. Has been. A header-side first engagement claw portion 35 and a header-side second engagement claw portion 36 of the lower blocking member 14 described later are inserted into the lower first through-hole 11f and the lower second through-hole 11g, respectively. It has become.

  An intermediate first through hole 11h is formed on the upstream side of the curved portion 11b of the header member 11 on the upstream side in the external air flow direction, and an intermediate second through hole 11i is formed on the downstream side in the external air flow direction. Is formed. A header side first engagement claw portion 51 and a header side second engagement claw portion 52 of the intermediate member 15 to be described later are inserted into the intermediate first through hole 11h and the intermediate second through hole 11i, respectively. Yes.

  The tank member 12 has a halved shape that opens to the tube 2c side, and extends in the vertical direction from the upper end of the core 2 to the vicinity of the lower end. Both edge portions extending in the longitudinal direction (vertical direction) on the inner surface of the tank member 12 are adapted to fit into the fitting recesses 11 a and 11 a of the header member 11. Both edges extending in the longitudinal direction of the tank member 12 are brazed to the inner surfaces of the fitting recesses 11 a and 11 a of the header member 11.

  A portion between both edge portions extending in the longitudinal direction of the tank member 12 is a curved portion 12 b curved toward the outside of the right header 10. As shown in FIG. 5A, an upper first through hole 12d is formed in the vicinity of the upper end of the curved portion 12b of the tank member 12 on the upstream side in the external air flow direction, and the downstream side in the external air flow direction. In addition, an upper second through hole 12e is formed. A tank-side first engagement claw portion 41 and a tank-side second engagement claw portion 42 of the upper closing member 13 described later are inserted into the upper first through-hole 12d and the upper second through-hole 12e, respectively. ing.

  Although not shown, a lower first through hole is formed in the vicinity of the lower end of the curved portion 12b of the tank member 12 on the upstream side in the external air flow direction, and the lower second through hole is formed in the downstream side in the external air flow direction. Is formed. A tank-side first engagement claw portion and a tank-side second engagement claw portion (both not shown) of the lower closing member 14 described later are inserted into the lower first through-hole and the lower second through-hole, respectively. It is like that.

  An intermediate first through hole 12h is formed on the upstream side in the external air flow direction at the intermediate portion in the vertical direction of the curved portion 12b of the tank member 12, and an intermediate second through hole 12i is formed on the downstream side in the external air flow direction. Is formed. A tank side first engagement claw portion 61 and a tank side second engagement claw portion 62 of the intermediate member 15 to be described later are inserted into the intermediate first through hole 12h and the intermediate second through hole 12i, respectively. Yes.

  As shown in FIG. 4, the upper closing member 13 is formed by connecting the header member 11 from the main body 13 a having a shape that matches the horizontal cross-sectional shape of the right header 10 and the edge of the main body 13 a on the header member 11 side. The header side first engagement claw portion 31 and the header side second engagement claw portion 32 that protrude so as to penetrate and the tank member 12 side edge of the main body portion 13a protrude so as to penetrate the tank member 12. A tank side first engagement claw portion 41 and a tank side second engagement claw portion 42 are provided.

  The header-side first engagement claw portion 31 and the header-side second engagement claw portion 32 are arranged with a space therebetween in the circumferential direction of the peripheral wall portion of the right header 10, and the tank-side first engagement claw portion 41. And the tank side 2nd engaging claw part 42 is also arrange | positioned at intervals in the circumferential direction of the surrounding wall part of the right side header 10. FIG.

  Leakage of the refrigerant is prevented by brazing the peripheral edge portion of the main body portion 13 a of the upper closing member 13 to the inner surface of the peripheral wall portion of the right header 10. Further, as shown in FIG. 5, the header side first engagement claw portion 31 and the header side second engagement claw portion 32 are inserted into the upper first through hole 11d and the upper second through hole 11e of the header member 11, respectively. In this state, it protrudes from the peripheral wall portion of the right header 10, is bent and caulked outside the peripheral wall portion, and is brazed to the peripheral wall portion. Further, the tank side first engagement claw portion 41 and the tank side second engagement claw portion 42 are inserted into the upper first through hole 12d and the upper second through hole 12e of the tank member 12, respectively. Projecting from the peripheral wall portion to the outside, bent and caulked outside the peripheral wall portion, and brazed to the peripheral wall portion.

  The base end side portion 31a of the header side first engaging claw portion 31 is a portion inserted into the upper first through hole 11d, and the distal end side portion 31b is a portion protruding outward from the upper first through hole 11d. . The width | variety of the base end side part 31a of the header side 1st engaging claw part 31 is set more widely than the width | variety of the front end side part 31b. Specifically, the width of the base end side portion 31a of the header-side first engaging claw portion 31 is set to be close to the width of the upper first through hole 11d, and the base end side portion 31a is It is brazed to the peripheral part of 1d through-hole 11d. The width of the tip side portion 31b is set to be narrower than the width of the upper first through hole 11d. And the level | step difference 31c is formed between the base end side part 31a and the front end side part 31b of the header side 1st engagement nail | claw part 31. FIG.

  The header side second engagement claw portion 32 is configured in the same manner as the header side first engagement claw portion 31, and the proximal end side portion 32 a of the header side second engagement claw portion 32 is an upper second through hole. 11e, and the tip side portion 32b is a portion protruding from the upper second through hole 11e to the outside. Further, a step 32c is formed between the proximal end side portion 32a and the distal end side portion 32b.

  The tank side first engagement claw portion 41 is configured in the same manner as the header side first engagement claw portion 31 and has a proximal end side portion 41a, a distal end side portion 41b, and a step 41c. The tank-side second engagement claw portion 42 is configured in the same manner as the header-side second engagement claw portion 32, and has a proximal end side portion 42a, a distal end side portion 42b, and a step 42c.

  The lower closing member 14 is configured in the same manner as the upper closing member 13, and has a main body portion 14a and four engagement claw portions 35 and 36 (only two are shown) as shown in FIG. Yes. The engaging claws 35 and 36 are inserted into the lower first through hole 11f and the lower second through hole 11g of the header member 11, respectively.

  As shown in FIG. 6, the intermediate plate 15 also includes the main body portion 15 a, the header side first engagement claw portion 51 and the header side second engagement claw portion 52, the tank side first engagement claw portion 61 and the tank side. A second engaging claw portion 62. The header side first engagement claw portion 51 and the header side second engagement claw portion 52 are inserted into the intermediate first through hole 11 h and the intermediate second through hole 11 i of the header member 11, respectively. It protrudes from the portion to the outside, is bent and caulked outside the peripheral wall portion, and is brazed to the peripheral wall portion. In addition, the tank side first engagement claw portion 61 and the tank side second engagement claw portion 62 are inserted into the intermediate first through hole 12h and the upper second through hole 12i of the tank member 12, respectively. Projecting from the peripheral wall portion to the outside, bent and caulked outside the peripheral wall portion, and brazed to the peripheral wall portion.

  The header side first engaging claw portion 51 has a proximal end side portion 51a, a distal end side portion 51b, and a step 51c. Moreover, the header side 2nd engaging claw part 52 has the base end side part 52a, the front end side part 52b, and the level | step difference 52c. Moreover, the tank side 1st engaging claw part 61 has the base end side part 61a, the front end side part 61b, and the level | step difference 61c. Furthermore, the tank side second engagement claw portion 62 has a proximal end side portion 62a, a distal end side portion 62b, and a step 62c.

  The main body 15a of the intermediate plate 15 has an opening 15b through which the refrigerant flows. The opening 15b is formed so as to penetrate the main body 15a.

  As shown in FIG. 1, a supply pipe 100 to which a refrigerant is supplied is connected to the upper portion of the right header 10. High-pressure refrigerant discharged from a compressor (not shown) flows through the supply pipe 100.

  The left header 20 is configured in the same manner as the right header 10, and includes a tube-side header member 21, an anti-tube-side tank member 22, an upper closing plate member 23, a lower closing plate member 24, and an intermediate plate member 25. I have. Each of the plate members 23 to 25 is basically the same as the one on the right side, but the intermediate plate member 25 is not formed with an equivalent to the opening 15 b of the right intermediate plate member 15. A discharge pipe 200 for discharging the refrigerant is connected to the lower portion of the left header 20. An opening similar to the opening 15b of the right intermediate plate 15 may be formed in the intermediate plate 25.

  Next, the manufacturing procedure of the right header 10 will be described. As shown in FIG. 2, first, the upper closing plate member 13, the lower closing plate member 14 and the intermediate plate member 15 are assembled to the tank member 12. At this time, the engaging claw portions 31, 32, 41, and 42 of the upper closing plate member 13 have a shape protruding straight without being bent as shown in FIG. The same applies to the lower closing plate member 14 and the intermediate plate member 15.

  Then, the tank side first engagement claw portion 41 and the tank side second engagement claw portion 42 of the upper closing plate member 13 are inserted into the upper first through hole 12 d and the upper second through hole 12 e of the tank member 12. Further, the engaging claw portion (not shown) of the lower closing plate member 14 is similarly inserted into the through hole (not shown) of the tank member 12. Further, the tank side first engagement claw portion 61 and the tank side second engagement claw portion 62 of the intermediate plate member 15 are inserted into the intermediate first through hole 12 h and the intermediate second through hole 12 i of the tank member 12.

  Thereafter, the header member 11 is aligned with the tank member 12. That is, the header side first engagement claw portion 31 and the header side second engagement claw portion 32 of the upper closing plate member 13 are inserted into the upper first through hole 11 d and the upper second through hole 11 e of the header member 11. Similarly, the engaging claws 35 and 36 of the lower closing plate member 14 are inserted into the through holes 11 f and 11 g of the tank member 12. Further, the header side first engagement claw portion 51 and the header side second engagement claw portion 52 of the intermediate plate member 15 are inserted into the intermediate first through hole 11 h and the upper second through hole 11 i of the header member 11. Further, the edge of the tank member 12 is fitted into the fitting recesses 11 a and 11 a of the header member 11.

  Next, the header-side first engagement claw portion 31 and the header-side second engagement claw portion 32 of the upper closing plate member 13 are bent and crimped to the sides approaching each other. As a result, the header side first engagement claw portion 31 and the header side second engagement claw portion 32 sandwich the portion between the upper first through hole 11d and the upper second through hole 11e of the header member 11. The caulking force surely acts on a plurality of locations on the peripheral wall portion of the header member 11. Therefore, the caulking piece extending from the tank member as in the conventional example becomes unnecessary, and the material can be reduced.

  When the header side first engagement claw portion 31 and the header side second engagement claw portion 32 are caulked, the header side first engagement claw portion 31 and the header side second engagement claw portion 32 are bent. Since it is good, it is not necessary to be deformed by hitting from outside as in the conventional example, and deformation of the peripheral wall portion of the right header 10 is suppressed. When the header side first engagement claw portion 31 is bent, it can be easily bent starting from the portion where the step 31c is formed.

  Further, since the width of the base end side portion 31a of the header side first engagement claw portion 31 is wide, the header side first engagement claw portion 31 is inserted into the through hole 11d of the peripheral wall portion of the right header 10 when the header side first engagement claw portion 31 is inserted. The deformation of the first engagement claw portion 31 is suppressed. Moreover, since the deformation | transformation of the base end side part 31a is suppressed when bending the header side 1st engaging claw part 31, the force concerning the surrounding wall part of the right side header 10 reduces.

  Similarly, the engagement claw portions 35 and 36 on the header member 11 side of the lower closing plate member 14 and the header side first engagement claw portion 51 and the header side second engagement claw portion 52 of the intermediate plate material 15 are also bent. Caulking.

  Further, the tank side first engagement claw portion 41 and the tank side second engagement claw portion 42 of the upper closing plate member 13 are bent and caulked, and the engagement claw portion on the tank member 12 side of the lower closing plate member 14 ( The tank side first engaging claw portion 61 and the tank side second engaging claw portion 62 of the intermediate plate 15 are also caulked in the same manner. Thereby, the header member 11 and the tank member 12 can be combined with each other by the upper closing plate member 13, the lower closing plate member 14 and the intermediate plate member 15.

  Similarly, the header member 21 and the tank member 22 are connected to each other by the upper closing plate member 23, the lower closing plate member 24, and the intermediate plate member 25 in the left header 20 as well.

  Thereafter, the right header 10 and the left header 20 are assembled to the core 2 and then conveyed into a brazing furnace to braze each part. At this time, since the right header member 11 and the tank member 12 are joined together by the upper closing plate member 13, the lower closing plate member 14 and the intermediate plate member 15, there is no displacement. The same applies to the header member 21 and the tank member 22 on the left side.

  When using the heat exchanger 1, high-pressure refrigerant flows from the supply pipe 100 into the right header 10, and then flows to the left through the upper tube 2c. The liquid refrigerant in the right header 10 flows downward from the right header 10 through the opening 15b of the intermediate plate 15 and bypasses the middle tube 2c. Further, the refrigerant in the upper tube 2 c gradually condenses while exchanging heat with the external air, and flows into the left header 20. The refrigerant flowing into the left header 20 flows to the right through the middle tube 2c and flows into the right header 10. The refrigerant in the right header 10 flows through the lower tube 2 c to the left, flows into the left header 20, and is discharged from the discharge pipe 200. When an opening is formed in the intermediate plate 25, the liquid refrigerant mainly flows downward from the opening of the intermediate plate 25 and bypasses the lower tube 2c.

  As described above, according to this embodiment, the upper closing plate member 13 is provided with the first engagement claw portion 31 and the second engagement claw portion 32, and the engagement claw portions 31, 32 are connected to the right header 10. Since the caulking is performed by bending the peripheral wall portion, the upper blocking plate member 13 can be attached to the right closing header 10 without reducing the material constituting the right header 10 and without causing deformation of the peripheral wall portion of the right header 10. It can be securely fixed to the peripheral wall. The same applies to the lower closing plate material 14 and the intermediate plate material 15, and the same applies to the left header 20.

  Further, since the width of the base end side portion 31a of the first engagement claw portion 31 of the upper closing plate member 13 is wider than the width of the tip end side portion 31b, the first engagement is made in the through hole 11d in the peripheral wall portion of the right header 20. When the claw portion 31 is inserted, the deformation of the first engagement claw portion 31 can be restrained and surely caulked, and when the first engagement claw portion 31 is bent, it is applied to the peripheral wall portion of the right header 10. The force is reduced and deformation of the peripheral wall can be suppressed.

  Further, since the step 31c is formed between the proximal end side portion 31a and the distal end side portion 31b of the first engagement claw portion 31 of the upper closing plate member 13, the first engagement claw portion 31 can be easily bent. it can. Thereby, since the deformation | transformation of the base end side part 31a of the 1st engagement nail | claw part 31 can be suppressed, brazing failure can be suppressed.

  Moreover, since the 1st engagement nail | claw part 31 and the 2nd engagement claw part 32 penetrate the curved part of the surrounding wall part of the right side header 10, and are bent in the side which mutually approaches, the 1st engagement claw part 31 And the caulking force of the 2nd engagement nail | claw part 32 can be made to act with respect to a surrounding wall part reliably.

  In addition, since the intermediate plate member 15 is provided at the intermediate portion in the longitudinal direction of the peripheral wall portion of the right header 10, it is possible to prevent the header member 11 and the tank member 12 from being opened. Since the intermediate plate 15 has the opening 15b, it can be considered that the intermediate plate 15 is easily deformed. However, in this embodiment, when crimping, the intermediate plate 15 is not deformed by hitting from the outside as in the conventional example. However, the force acting to deform the portion of the intermediate plate 15 where the opening 15b is formed is reduced, and therefore, the intermediate plate 15 can be prevented from being deformed and reliably caulked. In addition, deformation of the peripheral wall portion of the right header 10 can be prevented.

  Further, as in the modification shown in FIG. 7, a notch 31d may be formed between the base end side portion 31a and the tip end side portion 31b of the header side first engagement claw portion 31 of the upper closing plate member 13. . Thereby, since the header side 1st engagement nail | claw part 31 can be bent easily, a deformation | transformation of the base end side part 31a of the header side 1st engagement claw part 31 can be suppressed, and a brazing defect can be suppressed. Similarly, notch portions 32d, 41d, and 42d can be formed in the header side second engagement claw portion 32, the tank side first engagement claw portion 41, and the tank side second engagement claw portion 42, respectively.

  In the above embodiment, the upper closing plate member 13 is joined to the header side first engagement claw portion 31 and the header side second engagement claw portion 32, the tank side first engagement claw portion 41 and the tank side second engagement. The claw portion 42 is provided, but not limited thereto, the header side first engagement claw portion 31 and the header side second engagement claw portion 32, the tank side first engagement claw portion 41 and the tank side second. Any one of the engaging claws 42 may be provided.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the heat exchanger header according to the present invention can be used, for example, in a heat exchanger of an air conditioner.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Core 2c Tube 10 Right side header 11 Header member (1st member)
11d Upper first through hole 11e Upper second through hole 12 Tank member (second member)
13 Upper closing plate member 14 Lower closing plate member 15 Intermediate plate member 15b Opening portion 31 Header side first engaging claw portion 31a Base end side portion 31b Tip side portion 31c Step 31d Notch portion 32 Header side second engaging claw portion

Claims (8)

In the header for the cylindrical heat exchanger to which the end of the tube through which the heat exchange medium flows is connected,
The peripheral wall portion of the header is configured by combining a first member located on the tube side and a second member located on the opposite tube side opposite to the tube,
Inside the peripheral wall portion, a plate material is disposed,
The plate member has a first engagement claw portion and a second engagement claw portion protruding so as to penetrate at least one of the first member and the second member and spaced apart from each other in the circumferential direction of the peripheral wall portion. Provided,
The header for a heat exchanger, wherein the first engaging claw portion and the second engaging claw portion are bent and caulked outside the peripheral wall portion, and are brazed to the peripheral wall portion. The header for a heat exchanger according to claim 1,
A through hole into which the proximal end side of the first engagement claw portion is inserted is formed in the peripheral wall portion,
The heat exchanger header, wherein a width of a base end side of the first engagement claw portion is set wider than a width of a distal end side of the first engagement claw portion. The header for a heat exchanger according to claim 2,
A header for a heat exchanger, wherein a step is formed between a proximal end side and a distal end side of the first engagement claw portion. In the header for heat exchangers according to any one of claims 1 to 3,
The peripheral wall portion is formed so as to curve outward of the header,
The header for a heat exchanger, wherein the first engagement claw portion and the second engagement claw portion are bent to the side approaching each other through the curved portion of the peripheral wall portion. In the header for heat exchangers according to claim 1 or 2,
A header for a heat exchanger, wherein a notch is formed between a proximal end side and a distal end side of the first engagement claw portion. In the header for heat exchangers as described in any one of Claim 1 to 5,
The heat exchanger header, wherein the plate member is disposed at least on both ends in the longitudinal direction of the peripheral wall portion. The header for a heat exchanger according to claim 6,
The header for a heat exchanger, wherein the plate members disposed on both end sides in the longitudinal direction of the peripheral wall portion are closed plate members that close both end sides of the peripheral wall portion. In the header for heat exchangers as described in any one of Claim 1 to 6,
A header for a heat exchanger, wherein the plate member is disposed at least in an intermediate portion in a longitudinal direction of the peripheral wall portion and has an opening through which a heat exchange medium flows.

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