DE102016106190A1 - Heat exchanger and its production process - Google Patents

Abstract

A heat exchanger has a stacked body (2), a sump (4) and a connector (6, 7). The sump has a plate member (42) and a container outer housing (41). The container outer housing has an outer surface to which the connector is connected. The connector has an abutting portion (63, 73) abutting on the outer surface of the container outer casing, and one end side of the abutting portion in the stacking direction is connected to the outer surface of the container outer casing by welding. The abutting portion has a weld (632, 634, 732, 734) where the abutted portion is welded to the container outer casing, and the weld is a location at which a thickness (Th1) of the abutted portion in a counter direction between the connector and the container outer case is smaller than a maximum thickness (Thmax) of the abutted portion in the opposite direction, and at which a distance (L1) from the weld to a portion of the outer peripheral portion closest to the abutting portion is longer than a shortest distance (Lmin) from the region of the outer peripheral portion to the adjacent portion.

Description

The present disclosure relates to a heat exchanger and a manufacturing method thereof.

A heat exchanger in which a pipe joint connector is temporarily fixed to a header in a manner that a projecting portion of the connector is deformed after being inserted into a through hole provided in the header tank is, for example, in Patent Literature 1 ( JP 2007-205621 A ), known. According to Patent Literature 1, the connector is temporarily fixed to the sump in a manner that a former is disposed inside the sump and the protruding portion of the connector is deformed by the former when temporarily fixing the connector to the sump. In addition, according to Patent Literature 1, a divided header tank in which a tank outer casing forming an outer casing and a plate member connecting pipes are coupled together to be mounted to each other are used as the header tank.

However, the manner of deforming the protruding portion of the connector from an inner side of the header tank by the former as described in Patent Literature 1 requires complicated operation, which complicates a manufacturing operation for the heat exchanger. Consequently, such a way is not preferable.

The inventors of the present disclosure consider that a connector is temporarily fixed to a header in a manner that the connector is coupled by welding to an outer surface of the header.

However, considering the compressive strength, the connector is constructed to have a block shape, and a thickness of the connector is larger than a portion of the header forming the outer surface. As a result, the connector has a larger heat capacity than the sump, and a temperature on a side adjacent to the connector increases less easily during welding compared to a temperature on a side adjacent to the sump. Therefore, when the connector is connected to the outer surface of the collector by welding, the connector can not melt, and a connection state may not be stable due to damage to the collector.

In addition, according to Patent Literature 1, the divided header tank constituted by the tank outer shell and the plate member is used as the header tank, and the connector is connected around a coupling portion between the tank outer shell and the plate member.

According to such a structure, thermal deformation caused in welding may have an effect on a coupling state between the container outer case and the plate member in the collecting container when the connector is temporarily fixed to the collecting container by welding. Such an effect is not preferred since the effect leads to a reduction in the tightness of the collecting container.

The present disclosure addresses the issues described above, and it is an object of the present disclosure to provide a heat exchanger in which a connection state between a connector and a collecting container can be stably ensured and the tightness of the collecting container can be ensured when the connector by welding is connected to the sump, and to provide a manufacturing method of the heat exchanger.

A heat exchanger according to a first aspect of the present disclosure has a stacked body, a sump, and a connector. Pipes through which a heat exchange target fluid flows are stacked in the stacked body. The sump extends in a stacking direction of the stacked body. The sump is connected to a longitudinal end portion of each of the tubes and has an inner space communicating with an interior of each of the tubes. The connector connects a pipe in which the heat exchange target fluid flows to the sump. A passage in the inside of the piping for the heat exchange target fluid flows and the inside of the header are communicated with each other through the connector.

The sump has a plate member and a container outer housing. The plate member is connected to the longitudinal end portion of each of the tubes. The container outer housing is connected to the plate member and forms the inner space between the plate member and the container outer housing. The container outer housing has an outer surface to which the connector is connected. The container outer case faces an outer peripheral portion that provides an outer edge of the plate member, and has an outer end portion thereof Outside peripheral portion is coupled. The connector has an abutting portion which abuts the outer surface of the container outer housing. One end side of the abutting portion in the stacking direction is connected by welding to the outer surface of the container outer casing. The adjacent section has a weld at which the adjacent portion is welded to the container outer housing. The weld is a point at which a thickness of the abutted portion in a counter direction between the joint and the container outer casing is smaller than a maximum thickness of the adjacent portion in the opposite direction, and at which a distance from the weld to a portion of the outer peripheral portion closest to the adjacent portion is longer than a shortest distance from the region of the outer peripheral portion to the adjacent portion.

According to the first aspect, the abutting portion of the connector abutting on the container outer housing has a location with a small thickness, and the location is connected by welding to the container outer housing. Therefore, destabilization of a connection state between the connector and the container outer case due to a heat capacity difference between the connector and the container outer case can be suppressed.

Further, the abutting portion of the connector abutting the container outer housing has a location spaced from the outer peripheral portion of the container outer housing coupled to an outer edge of the plate member, and the location is connected to the container outer housing by welding. Thus, thermal deformation or the like caused when the connector and the outer surface of the container outer case are welded together can be prevented from having an effect on a connection state between the plate member and the container outer case.

Thus, according to the heat exchanger of the first aspect of the present disclosure, a stable connection state between the connector and the header tank can be secured, and tightness of the header tank can be ensured when the connector is connected to the header tank by welding.

According to a second aspect of the present disclosure, a heat exchanger has a stacked body, a header tank and a connector. Pipes through which a heat exchange target fluid passes are stacked in the stacked body. The sump extends in a stacking direction of the stacked body. The sump is connected to a longitudinal end portion of each of the tubes and has an inner space communicating with an interior of each of the tubes. The connector connects a pipe in which the heat exchange target fluid flows to the sump. A passage in the inside of the tube for the heat exchange target fluid and the inside of the header are communicated with each other through the connector. The sump has a plate member and a container outer housing.

The plate member is connected to the longitudinal end portion of each of the tubes. The container outer housing is coupled to the plate member and forms the interior between the plate member and the container outer housing. The container outer housing has an outer surface to which the connector is connected. The container outer case faces an outer peripheral portion that provides an outer edge of the plate member, and has an outer end portion that is coupled to the outer peripheral portion. The connector has an abutting portion which abuts the outer surface of the container outer housing. One end side of the abutting portion in the stacking direction is connected to the outer surface of the container outer casing by welding. The adjacent section has a weld at which the adjacent portion is welded to the container outer housing. The weld is a position where a thickness of the abutting portion in a counter direction between the connector and the container outer case is smaller than a maximum thickness of the abutting portion in the opposite direction, and is a position spaced apart by a specified distance from the connecting portion Plate element and the container outer housing is removed.

The second aspect of the present disclosure can produce the same effect as the first aspect.

Here, the container outer case and the plate member may be joined by excess fusion in welding before the container outer case and the plate member are brazed when the connector is connected to the container outer case around a joint portion between the plate member and the container outer case. In this case, a relative positional relationship between the container outer case and the plate member before brazing is set, and it is easy to leave a void between the braids during brazing Container outer housing and the plate member are provided.

Then, a manufacturing method of a heat exchanger according to the present disclosure has deformation, welding and brazing. In forming, a part of the outer peripheral portion of the plate member is bent along a circumference of the outer end portion of the container outer case to couple the container outer case and the plate member to each other. In welding, the connector is connected to the outer surface of the container outer housing, which is coupled to the plate member. In brazing, the plate member and the container outer housing connected to the connector are coupled together.

According to the present disclosure, the abutting portion of the connector abutting on the container outer housing has the location spaced from the outer peripheral portion of the container outer housing coupled to the outer peripheral portion of the plate member, and the location is connected to the container outer housing by welding. Therefore, a reason for coupling between the container outer case and the plate member caused by excessive melting in welding prior to brazing the container outer case and the plate member to each other can be minimized.

Therefore, according to the present disclosure, occurrence of a void between the container outer case and the plate member can be suppressed when the container outer case and the plate member are welded together, and leakproofness of the collecting container can be sufficiently ensured.

The foregoing and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description made with reference to the accompanying drawings

1 FIG. 10 is an entire configuration diagram illustrating a heat exchanger according to a first embodiment. FIG.

2 FIG. 10 is a perspective view illustrating a portion of the heat exchange around a sump according to the first embodiment. FIG.

3 FIG. 11 is an exploded perspective view illustrating the header tank of the heat exchanger according to the first embodiment. FIG.

4 FIG. 10 is a perspective view of the header tank of the heat exchanger according to the first embodiment. FIG.

5 is one along one in 1 shown cross-sectional view taken VV line.

6 FIG. 12 is a schematic cross-sectional view illustrating a container outer case of the collecting container according to the first embodiment. FIG.

7 is one along one in 1 taken line VII-VII taken cross-sectional view.

8th FIG. 12 is a schematic cross-sectional view illustrating the header tank to which a connector is connected according to the first embodiment. FIG.

9 is one from a by an arrow IX in 8th Directed diagram viewed.

10 FIG. 10 is a block diagram showing a manufacturing method of the heat exchanger according to the first embodiment. FIG.

11 FIG. 12 is a schematic cross-sectional view illustrating a header to which a connector according to a first modified example of the first embodiment is connected. FIG.

12 FIG. 12 is a schematic cross-sectional view illustrating a header to which a connector according to a second modified example of the first embodiment is connected. FIG.

13 is a perspective view illustrating a connector according to a second embodiment.

14 is a schematic cross-sectional view illustrating a collecting container to which a connector according to the second embodiment is connected.

15 FIG. 10 is a perspective view illustrating the heat exchanger around the sump according to the second embodiment. FIG.

Embodiments of the present disclosure will be described hereinafter with reference to the drawings. In the embodiments, a part corresponding to or equivalent to an object described in a previous embodiment may be assigned the same reference number, and descriptions for the part may be omitted. In one embodiment, when only a portion of a construction is described, parts that are incorporated in FIG Previous embodiments have been described, are applied to the other parts of the structure.

First Embodiment

In the present embodiment, an example in which a heat exchanger of the present disclosure is directed to a radiator (ie, a gas cooler) will be described. 1 is applied, which performs a heat exchange between refrigerant and air in an air conditioner for a vehicle that performs an air conditioning for a vehicle compartment, so that the refrigerant radiates heat. A heat exchange target fluid is the refrigerant according to the present embodiment.

The spotlight 1 assembles a vapor compression refrigeration cycle together with a compressor, a pressure reduction mechanism, and an evaporator, not shown. The refrigeration cycle of the present embodiment is constructed by a supercritical refrigeration cycle in which a refrigerant pressure on a high pressure side becomes greater than or equal to a supercritical pressure (ie, comes into a supercritical state). In the refrigeration cycle, carbon dioxide is used as the refrigerant. Ethylene, ethane or nitrogen monoxide can be used as the refrigerant. A direction shown by each arrow, the left and right in 1 indicates indicates a direction from a front of a vehicle in a state mounted in the vehicle. In other words, a direction is defined by each arrow, the left and right in 1 is shown, a direction in a state in which a direction of travel of the vehicle is defined as forward.

As in 1 shown has the spotlight 1 the present embodiment, a heat exchange core part 2 , a side plate 3 , a pair of storage containers 4 , a container cap 5 and a pair of connectors 6 . 7 ,

Each of the elements that the spotlight 1 is made of aluminum metal, such as aluminum or an aluminum alloy. The spotlight 1 is provided in such a manner that the elements are brazed to a brazing material which, in a state in which the elements are mounted, is arranged in advance in a required portion of the elements.

The heat exchange core part 2 builds a heat exchange section of the radiator 1 on, in which the refrigerant and air exchange heat with each other. The heat exchange core part 2 has pipes 21 in which the refrigerant flows, and a rib 22 that is between adjacent two of the tubes 21 is arranged and promotes heat exchange between the refrigerant and air. According to the present embodiment, the heat exchange core part builds 2 a stacked body in which the pipes 21 are stacked.

The pipes 21 of the present embodiment are constructed by a single-hole tube or a porous tube having a flat-shaped section. The pipes 21 are arranged so as to be away from each other by a specified distance so that their flat surfaces are arranged parallel to each other.

The side plate 3 is a reinforcing element that the heat exchange core part 2 strengthened. The side plate 3 The present embodiment is on each side of the heat exchange core part 2 in a stacking direction of the tubes 21 (ie one in 1 shown top-bottom direction).

The pair of storage tanks 4 acts as a container, each with both longitudinal end sections of the tubes 21 connected and collects or distributes that in the pipes 21 flowing refrigerant. A hollow member having a tubular shape and extending in the stacking direction of the tubes 21 extends, builds each bin 4 on. Every collection container 4 It forms an interior with an interior of each of the tubes 21 communicates.

As in 2 to 7 As shown, a divided collection container becomes the collection container 4 used according to the present embodiment. The collection container 4 The present embodiment has a container outer housing 41 , a plate element 42 and an interlayer element 43 ,

The plate element 42 is an element with which each longitudinal end portion of the tubes 21 connected is. The plate element 42 is formed by deforming an element made of brazing-coated aluminum and having an elongated plate shape.

The plate element 42 The present embodiment has a plate portion 421 and an outer peripheral portion 422 , The plate section 421 is with slotted holes 421a provided that have a shape that leads to a flat sectional shape of the tubes 21 fits. The outer peripheral portion 422 is made by bending both end portions of the plate member 42 in a width direction perpendicular to a longitudinal direction toward a side adjacent to the container outer case and the intermediate layer member 43 built up.

A lot of the slotted holes 421a in the plate section 421 are formed, is equal to a lot of the tubes 21 , As in 7 As shown, the longitudinal end portion of each of the tubes becomes 21 in one State in which he is in the slot hole 421 is inserted, with the plate element 42 connected.

The outer peripheral portion 422 is a section of an outer end section 412 facing, in an outer periphery of the container outer housing 41 is formed and with the outer end portion 412 is coupled. The outer peripheral portion 422 is with claw sections 423 for temporarily fixing the container outer casing 41 , the plate element 42 and the intermediate layer element prior to brazing the container outer casing 41 and the plate member 42 to each other, provided.

In particular, the collection container 4 , as in 3 and 4 shown in a way temporarily fixed that the claw sections 423 the outer peripheral portion 422 along an outer edge of the container outer casing 41 bent and in a state in which the interlayer element 43 between the container outer casing 41 and the plate element 42 is inserted, plastically deformed.

The container outer casing 41 is an element that works together with the plate element 42 The interior forms with the interior of the pipes 21 communicates. The container outer casing 41 is formed by deforming an element made of aluminum coated with the brazing material and having an elongated plate shape. The container outer casing 41 has a refrigerant circulation section 411 and the outer end portion 412 , The refrigerant circulation section 411 is achieved by deforming a central portion of the container outer casing 41 in the width direction perpendicular to the longitudinal direction so as to have a U-shaped cross section. The outer end section 412 extends from a base side of the refrigerant circulation portion 411 in the width direction in the direction of the plate member 42 ,

The refrigerant circulation section 411 bulges from the intermediate layer element 43 away, and the refrigerant flows in an inner space of the refrigerant circulation portion 411 in the longitudinal direction of the collecting container 4 , A depth dimension of the refrigerant circulation section 411 with respect to the outer end portion 412 is greater than or equal to a width dimension of the refrigerant circulation area 411 , Consequently, by reducing the width dimension of the refrigerant circulating section 411 prevents a load due to a pressure of the refrigerant flowing into the interior of the sump 4 flows concentrically in one direction, in which the container outer casing 41 and the plate element 42 spaced apart from each other.

As in 4 and 5 shown is the outer end portion 412 a section of the claw sections 423 the outer peripheral portion 422 and the intermediate layer element 43 is held. That is, the outer end portion 412 has a surface that matches the claw sections 423 the outer peripheral portion 422 facing, and the other surface, the intermediate layer element 43 is facing.

As in 6 shown, the container has outer housing 41 In the present embodiment, on its outer surface side, a corrosion protection sacrificial layer 413 , which is made of metal, its potential compared to a material that the container outer casing 41 builds up, is smaller. According to the present embodiment, the anticorrosion sacrificial layer becomes 413 formed by thermal spraying (ie zinc spraying), wherein zinc, compared to aluminum or aluminum alloy, the container outer housing 41 build, is a base metal, on the outer surface of the container outer housing 41 is sprayed. Corrosion resistance of the container outer casing 41 is due to the corrosion protection sacrificial effect of the corrosion protection sacrificial layer 413 ensured.

As in 2 shown connects each of the connectors 6 . 7 for the tubing connection with the outer surface of the container outer casing 41 , A connection state between the container outer casing 41 and each of the connectors 6 . 7 will be described later. The intermediate layer element 43 is constructed as a structural member that is separate from the container outer housing 41 and the plate element 42 is disconnected. In particular, the intermediate layer element 43 made of a bare material made of an aluminum alloy without being coated with the brazing material and having an elongated plate shape. The intermediate layer element 43 has a length in the longitudinal direction equal to a length of the container outer casing 41 in the longitudinal direction.

The intermediate layer element 43 The present embodiment has through-holes 431 provided from an upper surface to a lower surface facing each other through the intermediate layer member 43 walk. The through holes 431 are formed in places, each of the slot holes 421a of the plate element 42 correspond. An end portion of each of the through holes 421 in the longitudinal direction is with a step portion 431a as a position regulating portion, which is an end position of the tubes 21 regulated, provided (see 5 and 7 ). In this way, the interlayer element regulates 43 that is not covered with the brazing material that End position of the pipes 21 , Consequently, a reason for the clogging of the end portion of the tubes 21 that is caused by the brazing material when the sump 4 and the heat exchange core part 2 be brazed together, be suppressed.

As in 1 shown is the separator 4a inside one of the pair of collection containers 4 arranged. The separator 4a is an element that defines the interior of the collection container 4 divided into an upper room and a lower room.

The container cap 5 is with an end portion of each sump 4 in the longitudinal direction (ie, the stacking direction of the tubes 21 ) and closes each of the end portions of the collection container 4 in a top-down direction. An illustration of the container cap 5 is in 2 to 4 omitted.

The pair of connectors 6 . 7 is a connector through which a passage 91 inside the outer pipe 9 in which the refrigerant flows, and the interior of the collecting container 4 communicate with each other. As in 2 shown is each of the pair of connectors 6 . 7 with one of the pair of storage tanks 4 in which the separator 4a is arranged, connected. One of the pair of connectors 6 . 7 builds an inlet-side connector 6 on that the refrigerant to the sump 4 and another of the pair of connectors 6 . 7 builds an outlet-side connector 7 on, which introduces the refrigerant to the collecting tank 4 to stream.

The connector 6 and the connector 7 have essentially the same structure. Consequently, in the present embodiment, a structure of the inlet side connector 6 and a description of a structure of the outlet side connector 7 is omitted. A number of clips in each of the drawings show a portion of the outlet-side connector 7 that is the part of the inlet side connector 6 equivalent.

As in 8th and 9 shown is the inlet-side connector 6 constructed by an element made of aluminum and having a block shape. The inlet-side connector 6 is with a connection hole 61 ( 71 ) provided through an opening 41a located in the outer surface of the container outer casing 41 is provided with the interior of the collecting container 4 communicates.

The inlet-side connector 6 The present embodiment has a connecting portion 62 ( 72 ) on one side, with the outer pipe 9 connects, and an adjacent section 63 ( 73 ) located on the outer surface of the container outer casing 41 is applied. An outer shape of the connecting portion 62 ( 72 ) is larger than an outer shape of the adjacent portion 63 ( 73 ).

According to the present embodiment, the connector is 6 with a recessed section 631 ( 731 ) recessed inward in an end portion of the adjacent portion 63 ( 73 ) on one end side in the longitudinal direction of the collecting container 4 Mistake. In other words, the recessed section 631 in an end surface of the adjacent section 63 provided. The recessed section 631 ( 731 ) is provided to have a thickness Th1 of the adjacent portion 63 ( 73 ) in a opposite direction between the adjacent section 63 ( 73 ) and the container outer casing 41 closer to a thickness Th2 of the refrigerant circulation portion 411 of the container outer casing 41 set. The recessed section 631 ( 731 ) of the present embodiment is provided by a round bottomed hole provided by cylindrical countersinking.

The recessed section 631 ( 731 ) of the present embodiment is so in the adjoining section 63 ( 73 ) is formed such that the thickness Th1 of a portion of the adjacent portion 63 ( 73 ), with the recessed section 631 ( 731 ) is substantially equal to the thickness Th2 of the refrigerant circulating section 411 of the container outer casing 41 becomes. In particular, the recessed section 631 ( 731 ) of the present embodiment is formed at a position at which a distance from the abutting portion 63 ( 73 ) to the outer surface of the container outer casing 41 substantially equal to the thickness Th2 of the refrigerant circulating section 411 is.

The recessed section 631 ( 731 ) of the present embodiment is at a position closer to a central portion than an end portion of the end surface of the adjacent portion 63 ( 73 ) formed at one end in the width direction is formed. Besides, the recessed section is 631 ( 731 ) is formed such that its thickness D1 is smaller than a dimension D2 from the lower surface of the recessed portion 631 ( 731 ) to the through hole 61 ( 71 ) (ie, D1 <D2) is sufficient compressive strength of a portion of the inlet side connector 6 ( 7 ) around the through hole 61 ( 71 ).

Each of the pair of connectors 6 . 7 having the structure described above is brazed to the outer surface of the container outer casing 41 after being welded by MIG welding (ie metal welding with inert Gases) temporarily on the outer surface of the container outer casing 41 was fixed. "Welding" mentioned in the present embodiment is a technique (ie, fusion welding) in which a base member is melted and different from a brazing joint in which the base member is coupled using a brazing material or solder without being melted.

As in 2 is shown, an end portion of the adjacent section 63 ( 73 ) each of the pair of connectors 6 . 7 in the longitudinal direction of the collecting container 4 (ie the stacking direction of the tubes 21 ) by welding to the outer surface of the container outer casing 41 connected.

Then a weld 632 ( 732 ), in which each of the pair of connectors is welded to the container outer casing 41 is connected with reference to 8th described in detail. The Gegenüberrichtung between the inlet side connector 6 and the container outer casing 41 corresponds to the right-left direction in 8th , and a direction perpendicular to the opposite direction between the inlet side connector 6 and the container outer casing 41 corresponds to a top-bottom direction in 8th ,

The weld 632 ( 732 ) is a location where the thickness Th1 of the adjacent section 63 ( 73 ) in the opposite direction between the connector and the container outer casing is smaller than a maximum thickness of the adjacent portion 63 ( 73 ) in the opposite direction (ie Th1 <Thmax).

The weld 632 ( 732 ) of the present embodiment is a position where the thickness Th1 of the adjacent portion 63 ( 73 ) smaller than a thickness of another portion of the adjacent portion 63 ( 73 ). In other words, the weld is 632 ( 732 ) a position at which the thickness Th1 in the opposite direction between the connecting piece 6 ( 7 ) and the container outer casing 41 smaller than the maximum thickness Thmax of the adjacent section 63 ( 73 ) in the opposite direction (ie Th1 <Thmax). In particular, the weld is 632 ( 732 ) a spot between the recessed section 631 ( 731 ) and the container outer casing 41 and adjacent to the container outer housing 41 is arranged.

Besides, the weld is 632 ( 732 ) a location at which a distance L1 from the weld 632 ( 732 ) to a portion of the outer peripheral portion 422 closest to the adjacent section 63 ( 73 ) is longer than a shortest distance Lmin from the region of the outer peripheral portion 422 to the adjacent section 63 ( 73 ) (ie, L1> Lmin) in the direction perpendicular to the opposite direction in which the connector 6 . 7 and the container outer casing 41 opposite each other is sword. In other words, the weld is 632 ( 732 ) a location at a specified distance from a joint area between the plate member 42 and the container outer casing 41 path. In other words, the shortest distance Lmin is a shortest distance in the direction perpendicular to the opposite direction from the region of the outer peripheral portion 422 closest to the adjacent section 63 ( 73 ) is to an area of the adjacent section 63 ( 73 ) in contact with the refrigerant circulation section 411 is.

The weld 632 ( 732 ) of the present embodiment is a position where the distance L1 from the region of the outer peripheral portion 422 closest to the adjacent section 63 ( 73 ) longer than a distance to another part of the adjacent section 63 ( 73 ) in the direction perpendicular to the opposite direction. In particular, the weld is 632 ( 732 ) adjacent a center portion of the refrigerant circulation portion 411 in the direction perpendicular to the opposite direction.

A manufacturing process for the spotlight 1 According to the present embodiment, referring to FIG 10 described. 10 shows a schematic manufacturing method for the radiator 1 , As in 10 Shown in a first half of the manufacturing process for the spotlight 1 In the present embodiment, the heat exchange core part 2 and the collection container 4 separated from each other. Therefore, the first half of the manufacturing process is described separately. Regarding the collection container 4 , the container will be outside housing 41 , the plate element 42 , the interlayer element 43 , the container cap 5 and each of the pair of connectors 6 . 7 prepared in advance (ie manufacturing). The container outer casing 41 , the plate element 42 and the intermediate layer element 43 are formed by a method such as pressure molding to have a required shape, and are coated with the brazing material in a required area. The manufacturing method comprises forming in which the corrosion protection sacrificial layer 413 by Zn spraying on the outer surface of the container outer casing 41 is trained.

Subsequently, elements become 41 - 43 holding the collection container 4 build up by bending the claw sections 423 the outer peripheral portion 422 along the outer edge of the container outer casing 41 and plastically deforming the claw portion 423 in a state in which the interlayer element 43 between the container outer casing 41 and the plate element 42 is inserted (ie deforming), coupled together. When deforming the container cap 5 with the longitudinal end portion of the collecting container 4 connected after the elements 41 - 43 holding the collection container 4 build up, are coupled with each other.

Each of the pair of connectors 6 . 7 is achieved by MIG welding (ie, welding the connector) to the outer surface of the container outer casing 41 that with the plate element 42 coupled, connected. In welding, each of the pair of connectors becomes 6 . 7 at the weld described above with the outer surface of the container outer housing 41 connected.

With respect to the heat exchange core part 2 become the pipes 21 , the rib 22 and the side plate 3 manufactured (ie, manufactured) by a method such as pressure molding such that they have a required shape and coated in a required area with the brazing material. The pipes 21 , the rib 22 and the side plate 3 be in a state where the rib 22 between each of the adjacent two of the tubes 21 is arranged and the side plate 3 in the end portion of the tubes 21 in the stacking direction, is mounted to each other by a device such as a wire (ie, temporarily mounting the heat exchange core part).

Then the one with the connectors 6 . 7 connected storage tanks 4 and the one with the side plate 3 mounted heat exchange core part 2 mounted together (ie, mounting the sump and the heat exchange core member). In this process, both longitudinal end portions of the tubes 21 in both - the slot hole 421a that in the plate element 42 of the collection container 4 is provided, and the through hole 431 of the intermediate layer element 43 - used.

An assembled body of the collection container 4 and the heat exchange core portion 2 is heated in a kiln, so that the collecting tank 4 and the heat exchange core part 2 brazed to be integrated with each other. In a case where a device for mounting the collecting container 3 and the heat exchange core 2 is used, the device is finally removed.

According to the radiator described above 1 In the present embodiment, the adjacent portion has 63 . 73 each of the connectors 6 . 7 lying on the container outer casing 41 is applied, a site with a small thickness, and the site is by welding with the container outer housing 41 connected. Therefore, a destabilization of a connection state between each of the connectors 6 . 7 and the container outer casing 41 due to a heat capacity difference between each of the connectors 6 . 7 and the container outer casing 41 be suppressed.

Furthermore, the adjacent section has 63 . 73 in which each of the connectors 6 . 7 on the container outer casing 41 rests on a point from the outer end portion 412 of the container outer casing 41 that with an outer peripheral portion 422 of the plate element 42 is coupled, and the location is determined by welding to the container outer housing 41 connected. Consequently, it is possible to prevent the thermal deformation or the like from being caused when each of the connectors 6 . 7 and the outer surface of the container outer casing 41 welded together, an effect on a connection state between the plate member 42 and the container outer casing 41 Has.

Therefore, according to the radiator 1 In the present embodiment, a stable connection state between each of the connectors 6 . 7 and the collection container 4 be ensured, and a tightness of the sump 4 can be ensured if any of the connectors 6 . 7 by welding with the collecting container 4 is connected.

Thus, a structure with which the tightness of the sump 4 can be sufficiently ensured for a supercritical refrigeration cycle in which a pressure of the radiator 1 flowing refrigerant is high (in particular greater than or equal to 7 MPa) is preferred.

According to the present embodiment, the recessed portion 631 . 731 in the end portion of each of the connectors 6 . 7 formed in the stacking direction, and the point with a small thickness through the recessed portion 631 . 731 is the weld 632 . 732 , As a result, the heat capacity difference between the container outer case 41 and each of the connectors 6 . 7 be reduced by a simple work, such as cylindrical countersinking.

Here can the corrosion resistance of the collection container 4 by forming the anticorrosion sacrificial layer 413 on the outer surface side of the container outer casing 41 be improved.

However, a corrosion preventing effect of the anticorrosive sacrificial layer may 413 by a base material that leaks out of each element during welding, in a case where each of the connectors 6 . 7 by welding with the Outer surface of the container outer casing 41 is reduced.

Then, according to the present embodiment, the adjacent portion 63 . 73 each of the connectors 6 . 7 attached to the container outer casing 41 is applied, the site with a small thickness, and the site is by welding to the container outer housing 41 connected. Consequently, an influence on the anticorrosion sacrificial layer 413 of the container outer casing 41 be reduced in welding, since a weld bead, which is formed during welding, can be small. As a result, corrosion in a boundary surface between the container outer casing 41 and each of the connectors 6 . 7 through the anticorrosion sacrificial layer 413 be suppressed.

The container outer casing 41 and the plate element 42 may be due to excess fusion during welding prior to brazing the container outer casing 41 and the plate member 42 be connected to each other when each of the connectors 6 . 7 around the connection area between the plate element 42 and the container outer casing 41 around with the container outer casing 41 is connected. In this case, a relative positional relationship between the container outer case becomes 41 and the plate element 42 prior to brazing, and brazing can easily leave a void between the container outer casing 41 and the plate element 42 be formed.

Then, according to the present embodiment, the adjacent portion 63 . 73 each of the connectors 6 . 7 lying on the container outside housing 41 is applied, the location of the outer peripheral portion 412 of the container outer casing 41 that with the outer edge 422 of the plate element 42 is coupled, and the location is determined by welding to the container outer housing 41 connected. Therefore, a coupling between the container outer housing 41 and the plate element 42 , caused by the excess melting during welding of each of the connectors 6 . 7 and the container outer casing 41 before brazing the container outer casing 41 and the plate element 42 is caused to be suppressed.

Thus, according to the present embodiment, the occurrence of the void space between the container outer case 41 and the plate element 42 be suppressed, and the tightness of the sump 4 can be sufficiently ensured if the container outer housing 41 and the plate element 42 be coupled by brazing.

According to the present embodiment, the recessed portion 631 . 731 attached to each of the connectors 6 . 7 is provided, a round hole with ground. However, the recessed section 631 . 731 of the present embodiment as described below.

(A first modified example of the first embodiment)

As in 11 Shown can be an oval hole with ground in the adjacent section 63 ( 73 ) each of the connectors 6 . 7 be formed to move in the direction perpendicular to the Gegenüberrichtung between the sump 4 and each of the connectors 6 . 7 to extend, and the oval hole builds a recessed section 631A ( 731A ) on.

(A second modified example of the first embodiment)

As in 12 shown, a groove in the adjacent section 63 ( 73 ) each of the connectors 6 . 7 be formed to move in the direction perpendicular to the Gegenüberrichtung between the sump 4 and each of the connectors 6 . 7 to extend, and the groove builds a recessed section 631B ( 731B ) on.

Second Embodiment

A second embodiment will be described hereinafter. A description of a part that corresponds to or equivalent to an object described in the first embodiment may be omitted or simplified in the present embodiment.

According to the present embodiment, as in 13 to 15 shown is a prominent section 633 ( 733 ) in the adjacent section 63 ( 73 ) each of the connectors 6 . 7 provided to in the longitudinal direction of the collection container 4 (ie the stacking direction of the tubes 21 ) to preside.

The previous section 633 ( 733 ) stands from the end portion of the adjacent portion 63 ( 73 ) of the inlet side connector 6 on the end side in the longitudinal direction of the collecting container 4 (that is, from the end surface of the adjacent section 63 in front). The previous section 633 ( 733 ) is provided such that the thickness Th1 of the adjacent portion 63 ( 73 ) in the opposite direction between the adjacent section 63 ( 73 ) and the container outer casing 41 closer to the thickness Th2 of the refrigerant circulating section 411 of the container outer casing 41 comes.

The previous section 633 ( 733 ) of the present embodiment is formed such that the thickness Th1 of a portion of the adjacent portion 63 ( 73 ), with the preceding section 633 ( 733 ) is equal to the thickness Th2 of the refrigerant circulating section 411 becomes. The previous section 633 ( 733 ) of the present embodiment is in an area of the end surface of the adjacent portion 63 ( 73 ) is formed closer to a center position than an end portion in the width direction. According to the present embodiment, the thickness Th1 of the protruding portion 633 ( 733 ) of the adjacent section 63 ( 73 ) smaller than a thickness of another location in the adjacent section ( 63 ).

The weld 634 ( 734 ) of the present embodiment, reference is made to 14 described. According to the present embodiment, an end portion of the protruding portion 633 ( 733 ) in the longitudinal direction of the collecting container 4 (ie the stacking direction of the tubes 21 ) the weld 634 ( 734 ).

The weld 634 ( 734 ) is a location at which a distance L1 from the weld 634 ( 734 ) to a portion of the outer peripheral portion 422 closest to the adjacent section 63 ( 73 ) is longer than a shortest distance Lmin from the region of the outer peripheral portion 422 to the adjacent section 63 ( 73 ) (ie, L1> Lmin) in the direction perpendicular to the opposite direction in which the connector 6 . 7 and the container outer casing 41 lie opposite each other is. In particular, the weld is 634 ( 734 ) in the direction perpendicular to the opposite direction adjacent to the center portion of the refrigerant circulation portion 411 in the container outer casing 41 ,

Other constructions are the same as in the first embodiment. According to the structure of the present embodiment, the abutting portion 63 . 73 each of the connectors 6 . 7 resting on the container outer casing 41 abut, a location with a small thickness, and the site is made by welding to the container outer housing 41 connected. Furthermore, the adjacent section has 63 . 73 each of the connectors 6 . 7 lying on the container outside housing 41 is applied, a position which is a specified distance away from the outer peripheral portion 412 of the container outer casing 41 is that with the outer peripheral portion 422 of the plate element 42 is coupled, and the location is determined by welding to the container outer housing 41 connected. In this way, according to the radiator 1 In the present embodiment, a stable connection state between each of the connectors 6 . 7 and the collection container 4 be ensured, and a tightness of the sump 4 can be ensured if any of the connectors 6 . 7 by welding with the collecting container 4 is connected.

According to the present embodiment, the provision of the recessed portion is 631 . 731 in each of the connectors 6 . 7 as the first embodiment in a point advantageous that the recessed portion 631 . 731 is provided with a simple job.

However, in a case where the recessed portion exists 631 . 731 with each of the connectors 6 . 7 is provided, a fear that the recessed section 631 . 731 himself with the connection hole 61 ( 71 ), through which the outer pipeline 9 each of the connectors 6 . 7 and the collection container 4 communicate with each other. This disturbance leads to an increase of restrictions in a construction of the connectors 6 . 7 ,

According to the present embodiment, the above section 633 ( 733 ) in the end portion of each of the connectors 6 . 7 formed on the end side in the stacking direction, and the end portion of the protruding portion 633 ( 733 ) in the stacking direction is called the weld 634 ( 734 ). Therefore, the flow of the protruding portion occurs 633 ( 733 ) with the connection hole 61 ( 71 ), in each of the connectors 6 . 7 is provided, not, and a design flexibility of each of the connectors 6 . 7 can be improved.

(Other modifications)

• (1) In den vorstehend beschriebenen Ausführungsformen wird der Wärmetauscher (d. h. der Strahler oder der Verdampfer) der vorliegenden Offenbarung für die Fahrzeugklimaanlage verwendet, die den überkritischen Kältekreislauf aufbaut. Jedoch kann der Wärmetauscher der vorliegenden Offenbarung als ein Wärmetauscher (d. h. ein Kondensator oder Verdampfer) für eine Klimaanlage verwendet werden, die einen normalen unterkritischen Kältekreislauf oder einen Wärmetauscher (d. h. Strahler) zum Kühlen eines Verbrennungsmotors eines Fahrzeugs aufbaut. Der Wärmetauscher der vorliegenden Offenbarung ist nicht darauf beschränkt, in einem Fahrzeug verwendet zu werden, und kann als ein Wärmetauscher für einen anderen Zweck verwendet werden.
• (2) Wie in den vorstehend beschriebenen Ausführungsformen wird bevorzugt, die Korrosionsschutzopferschicht 413 auf der Außenoberfläche des Sammelbehälters 4 auszubilden, um die Korrosionsbeständigkeit des Sammelbehälters 4 zu verbessern. Jedoch kann die Korrosionsschutzopferschicht 413 weggelassen werden.
• (3) Das in den vorstehend beschriebenen Ausführungsformen beschriebene Herstellungsverfahren des Strahlers 1 ist ein Beispiel, und der Strahler 1 kann durch ein anderes Herstellungsverfahren hergestellt werden.
• (4) In den vorstehend beschriebenen Ausführungsformen versteht sich, dass die Elemente, die die Ausführungsformen bilden, abgesehen von einem Fall, in dem sie explizit als notwendig spezifiziert werden, oder einem Fall, in dem sie prinzipiell als absolut notwendig betrachtet werden, nicht notwendig sind. Die vorstehend beschriebenen Ausführungsformen sind in einem möglichen Bereich kombinierbar.
• (5) Selbst wenn in den vorstehend beschriebenen Ausführungsformen ein Faktor, wie etwa eine Menge von Elementen, ein Wert, eine Größe, ein Bereich erwähnt werden, versteht sich, dass der Faktor, abgesehen von einem Fall, in dem er explizit als notwendig spezifiziert wird, oder einem Fall, in dem er prinzipiell als absolut notwendig betrachtet wird, nicht auf einen spezifischen Wert beschränkt ist.
• (7) Selbst bei einem Merkmal, wie etwa einem Material, das ein Element ausbildet, einer Form eines Elements oder einer Positionsbeziehung von Elementen versteht sich, abgesehen von einem Fall, in dem es explizit als notwendig spezifiziert wird, oder einem Fall, in dem es prinzipiell als absolut notwendig betrachtet wird, dass ein derartiges Merkmal nicht auf ein spezifisches Material, eine Form, eine Positionsbeziehung oder ähnliches beschränkt ist.

The embodiments of the present disclosure are described above. However, the present disclosure is not limited to the above-described embodiments, and may be modified within the scope of the present disclosure as defined by the appended claims. For example, the present disclosure may be variously changed as follows. It should be understood that structures described in the embodiments described above are preferred structures, and the present disclosure is not limited to having the preferred structures. The present disclosure is intended to cover various modifications and equivalent arrangements within the scope of the present disclosure.

• (1) In the above-described embodiments, the heat exchanger (ie, the radiator or the evaporator) of the present disclosure is used for the vehicle air conditioner that constructs the supercritical refrigeration cycle. However, the heat exchanger of the present disclosure may be used as a heat exchanger (i.e. H. a condenser or evaporator) may be used for an air conditioning system that builds a normal subcritical refrigeration cycle or a heat exchanger (ie radiator) for cooling an internal combustion engine of a vehicle. The heat exchanger of the present disclosure is not limited to being used in a vehicle, and can be used as a heat exchanger for another purpose.
• (2) As in the above-described embodiments, it is preferable that the anticorrosion sacrificial layer 413 on the outer surface of the collecting container 4 to train the corrosion resistance of the collection container 4 to improve. However, the corrosion protection sacrificial layer 413 be omitted.
• (3) The manufacturing method of the radiator described in the above-described embodiments 1 is an example, and the spotlight 1 can be made by another manufacturing process.
• (4) In the above-described embodiments, it is understood that the elements constituting the embodiments are not necessary except for a case where they are explicitly specified as necessary or a case in which they are considered to be absolutely necessary in principle are. The embodiments described above can be combined in a possible range.
• (5) Even though a factor such as a set of elements, a value, a size, an area are mentioned in the above-described embodiments, it will be understood that the factor, except for a case in which it explicitly specifies as necessary or in a case in which it is considered to be absolutely necessary in principle, is not limited to a specific value.
• (7) Even in a feature such as a material constituting an element, a shape of an element, or a positional relationship of elements, it should be understood, except for a case where it is explicitly specified as necessary, or a case where In principle, it is considered absolutely necessary that such a feature is not limited to a specific material, shape, positional relationship or the like.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2007-205621 A [0002]

Claims (7)

A heat exchanger comprising: a stacked body ( 2 ), in which several pipes ( 21 ), wherein a heat exchange target fluid passes through the plurality of tubes; a collection container ( 4 ), which extends in a stacking direction of the stacked body, wherein the collecting container is connected to a longitudinal end portion of each of the plurality of tubes and has an interior communicating with an interior of each of the plurality of tubes; and a connector ( 6 . 7 ), which is a pipe ( 9 ), in which the heat exchange target fluid flows, communicates with the sump, and through the connector a passage ( 91 ) communicates with the interior of the collecting container inside the conduit for the heat exchange target fluid flows, the collecting container having: a plate element ( 42 ) connected to the longitudinal end portion of each of the plural tubes; and a container outer housing ( 41 ), which is coupled to the plate element and forms the interior space between the plate element and the container outer housing, wherein the container outer housing has an outer surface, with which the connecting piece is connected, the container outer housing an outer peripheral portion ( 422 facing), which provides an outer edge of the plate member, and an outer end portion (FIG. 412 ), which is coupled to the outer peripheral portion, the connector has an abutting portion ( 63 . 73 ), which abuts on the outer surface of the container outer casing and one end side of the abutting portion is connected by welding to the outer surface of the container outer casing, and the abutting portion a weld ( 632 . 634 . 732 . 734 ) at which the abutting portion is welded to the container outer casing, and the weld is a position at which a thickness (Th1) of the abutting portion in a counter direction between the connector and the container outer casing is smaller than a maximum thickness (Thmax) of the adjacent one Is in the opposite direction, and at which a distance (L1) from the weld to a portion of the outer peripheral portion that is closest to the abutting portion is longer than a shortest distance (Lmin) from the region of the outer peripheral portion to the abutting portion , Heat exchanger according to claim 1, wherein the connecting piece with a recessed portion ( 631 . 631A . 631B . 731 . 731A . 731B ) is provided in an end portion of the adjacent portion in the stacking direction, and the thickness of the adjacent portion at the weld ( 632 . 732 ) through the recessed portion is smaller than a thickness of another portion of the adjacent portion. Heat exchanger according to claim 1, wherein the abutting portion of the connecting piece with a projecting portion ( 633 . 733 ) protruding in the stacking direction and having the thickness which is smaller than a thickness of another location in the adjacent portion, and the welding point (FIG. 634 . 734 ) is an end portion of the protruding portion in the stacking direction. A heat exchanger according to any one of claims 1 to 3, wherein the container outer casing has an anticorrosive sacrificial layer on an outer surface side ( 413 ) made of metal whose potential is less than a potential of a material constituting the container outer casing. A heat exchanger according to any one of claims 1 to 4, wherein the container outer casing is connected to the plate member by brazing in a state in which the outer end portion of the plate member is coupled to the outer peripheral portion of the container outer casing and the connecting piece is connected to the outer surface of the container outer casing , The manufacturing method of the heat exchanger according to any one of claims 1 to 5, wherein the production method comprises: plastically deforming a part of the outer peripheral portion of the plate member so as to be bent along a circumference of the outer end portion of the container outer case to couple the container outer case and the plate member together; Welding the connector to the outer surface of the container outer housing coupled to the plate member; and Brazing the plate member and the container outer housing connected to the connector to be coupled together. A heat exchanger comprising: a stacked body ( 2 ), in which several pipes ( 21 ), wherein a heat exchange target fluid passes through the plurality of tubes; a collection container ( 4 ), which extends in a stacking direction of the stacked body, wherein the collecting container is connected to a longitudinal end portion of each of the plurality of tubes and has an interior communicating with an interior of each of the plurality of tubes; and a connector ( 6 . 7 ), which is a pipe ( 9 ), in which the heat exchange target fluid flows, with the A collecting container connects, whereby through the connecting piece a passage ( 91 ) communicates with the interior of the collecting container inside the conduit for the heat exchange target fluid flows, the collecting container having: a plate element ( 42 ) connected to the longitudinal end portion of each of the plural tubes; and a container outer housing ( 41 ), which is coupled to the plate element and forms the interior space between the plate element and the container outer housing, wherein the container outer housing has an outer surface, with which the connecting piece is connected, the container outer housing an outer peripheral portion ( 422 facing), which provides an outer edge of the plate member, and an outer end portion (FIG. 412 ), which is coupled to the outer peripheral portion, the connector has an abutting portion ( 63 . 73 ), which abuts on the outer surface of the container outer casing and one end side of the abutting portion is connected by welding to the outer surface of the container outer casing, and the abutting portion a weld ( 632 . 634 . 732 . 734 ) at which the abutting portion is welded to the container outer casing, and the weld is a position at which a thickness (Th1) of the abutting portion in a counter direction between the connector and the container outer casing is smaller than a maximum thickness (Thmax) of the adjacent one Section is in the opposite direction, and the weld is a specified distance away from a connection area between the plate member and the container outer housing.

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