WO2019155752A1

WO2019155752A1 - Condenser

Info

Publication number: WO2019155752A1
Application number: PCT/JP2018/045291
Authority: WO
Inventors: 正信飯尾
Original assignee: 株式会社デンソー
Priority date: 2018-02-06
Filing date: 2018-12-10
Publication date: 2019-08-15
Also published as: JP2019138487A

Abstract

This condenser (10) that condenses a refrigerant through heat exchange with air is provided with: a plurality of tubes (300) through which the refrigerant passes; a header tank (200) to which each of the tubes is connected; and a modulator (500) which is a container connected to the head tank and that separates the gas and liquid of the refrigerant received from the header tank. Protrusion parts (210, 220) protruding toward the modulator side are formed in a modulator-facing portion of the header tank by press processing. The modulator is joined to the protrusion parts of the header tank.

Description

Condenser

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2018-019176 filed on February 6, 2018, and claims the benefit of its priority. Which is incorporated herein by reference.

The present disclosure relates to a condenser that condenses refrigerant by heat exchange with air.

A refrigeration cycle such as an air conditioner is provided with a condenser that condenses the refrigerant. In the condenser, heat exchange is performed between a high-temperature gas-phase refrigerant flowing inside and air flowing outside, and the gas-phase refrigerant condenses into a liquid-phase refrigerant.

Such a condenser is often provided with a modulator which is a container for separating the gas-liquid refrigerant. The modulator is also referred to as a “liquid receiver” and supplies only the liquid-phase refrigerant after gas-liquid separation to the downstream side. As an object of supply, for example, a subcool section can be cited. As described in Patent Document 1 below, the modulator is provided in a fixed state with respect to the header tank of the condenser.

If heat is transferred from the header tank in which the high-temperature refrigerant is stored to the modulator in which the low-temperature liquid-phase refrigerant is stored, the liquid-phase refrigerant in the modulator is vaporized, which is not preferable. Therefore, in the condenser described in Patent Document 1 below, a heat insulating gap is formed between the header tank and the modulator, and a joining plate is interposed in a part of the gap. Yes. The said plate is a board | plate material by which the brazing material was clad on both surfaces beforehand. In the condenser described above, the header tank, the modulator, and the entire plate are joined together by a brazing material, thereby fixing the modulator.

Japanese Patent Laid-Open No. 2003-314928

In the condenser described in Patent Document 1, the connection between the header tank and the modulator is performed by interposing a plate which is a separate part. However, if the number of parts is increased in this way and the number of joints by the brazing material is increased, there is a high possibility that joint failure will occur at some joints. In order to prevent the occurrence of defective bonding, it is preferable that the number of parts to be bonded is as small as possible.

This disclosure is intended to provide a condenser capable of preventing poor bonding due to an increase in the number of parts while suppressing heat transfer from the header tank to the modulator.

A condenser according to the present disclosure is a condenser that condenses a refrigerant by heat exchange with air, and is joined to a plurality of tubes through which the refrigerant passes, a header tank to which each tube is connected, and the header tank. And a modulator for separating the gas-liquid refrigerant received from the header tank. A portion of the header tank that faces the modulator is formed with a protrusion that protrudes toward the modulator, and the modulator is joined to the protrusion of the header tank.

In the condenser having such a configuration, the modulator is joined to the protrusion formed in the header tank. The protruding portion is a portion in which a part of the header tank is protruded toward the modulator side by pressing. Since the modulator is joined to such a protruding portion, a gap is formed between the header tank and the modulator at a portion other than the protruding portion. As a result, heat transfer from the header tank toward the modulator is suppressed.

Further, the protruding portion is formed not by joining another part to the header tank but by pressing a part of the header tank. In such a configuration, since the modulator is directly joined to the header tank, it is possible to prevent the occurrence of joint failure due to an increase in joint locations.

According to the present disclosure, it is possible to provide a condenser that can prevent poor bonding due to an increase in the number of parts while suppressing heat transfer from the header tank to the modulator.

FIG. 1 is a diagram illustrating an overall configuration of the condenser according to the first embodiment. FIG. 2 is a cross-sectional view illustrating a configuration of a joint portion between the header tank and the modulator. FIG. 3 is a view showing the AA section and the BB section in FIG. FIG. 4 is a diagram for explaining the shape of the header tank. FIG. 5 is a diagram illustrating the relationship between the protruding amount of the protruding portion and the plate thickness of the reduced thickness portion. FIG. 6 is a diagram illustrating the relationship between the protrusion amount of the protrusion and the stress in the thinned portion. FIG. 7 is a diagram illustrating a configuration of the joint portion between the header tank and the modulator of the condenser according to the second embodiment.

Hereinafter, the present embodiment will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

The configuration of the condenser 10 according to the first embodiment will be described with reference mainly to FIG. The condenser 10 constitutes a part of the refrigeration cycle of the vehicle air conditioner, and is a heat exchanger for condensing the refrigerant circulating in the refrigeration cycle by heat exchange with air. The entire refrigeration cycle is not shown. The condenser 10 includes a pair of

header tanks

100 and 200, tubes 300, fins 400, and a modulator 500.

The header tank 100 is a container for temporarily storing refrigerant supplied from the outside. The header tank 100 is formed as a substantially cylindrical elongated container, and is arranged with its longitudinal direction aligned with the vertical direction.

In the header tank 100, a receiving portion 110 is formed in a portion above the center position in the vertical direction. The receiving unit 110 is a part that receives a refrigerant supplied from the outside and allows the refrigerant to flow into the header tank 100. The receiving part 110 is formed as a connector for connecting a pipe through which a refrigerant flows in the refrigeration cycle.

In the header tank 100, a discharge portion 120 is formed in a portion below the center position in the vertical direction. The discharge part 120 is a part for discharging the refrigerant that has been cooled in the condenser 10 to a liquid phase to the outside. The discharge part 120 is formed as a connector for connecting a pipe through which a refrigerant flows in the refrigeration cycle, similarly to the receiving part 110 described above.

In the inside of the header tank 100, a plate-like separator SP1 is disposed at a portion below the center position in the vertical direction. The internal space of the header tank 100 is divided into upper and lower portions by the separator SP1. The position where the separator SP1 is disposed is lower than the position where the receiving part 110 is formed, and is higher than the position where the discharge part 120 is formed.

The header tank 200 is provided as a container for temporarily storing the refrigerant, like the header tank 100. The header tank 200 is formed as a substantially cylindrical elongated container, and is arranged in a state where the longitudinal direction thereof is along the vertical direction. The header tank 200 is arranged such that its longitudinal direction is substantially parallel or parallel to the longitudinal direction of the header tank 100.

In the inside of the header tank 200, a plate-like separator SP2 is arranged at a portion below the center position in the vertical direction. The internal space of the header tank 200 is divided into upper and lower portions by the separator SP2. The height of the position where the separator SP2 is disposed is the same as the height of the position where the separator SP1 is disposed.

As shown in FIG. 3, the header tank 200 includes a tank member 201 and a base plate 202, and is configured by brazing the two together. Both the tank member 201 and the base plate 202 are made of metal. The tank member 201 is a portion protruding in an arc shape toward the modulator 500 described later. After the tank member 201 is entirely formed by press / roll molding, a later-described

protrusions

210 and 220 are formed by performing press processing on a part thereof.

The base plate 202 is a part that holds a plurality of tubes 300. A plurality of through holes (not shown) are formed in the base plate 202 corresponding to the respective tubes 300. The tube 300 to be described next is brazed to the base plate 202 in a state where the tip portion is inserted into each through hole. In addition, illustration of such a tube 300 is abbreviate | omitted in FIG.

The configuration of the header tank 100 is the same as the configuration of the header tank 200 described above, except that the protruding

portions

210 and 220 are not formed in part. For this reason, the detailed illustration and description thereof will be omitted.

Referring back to FIG. The tube 300 is a metal pipe formed in a cylindrical shape, and is a pipe through which a refrigerant passes. A plurality of tubes 300 are provided in the condenser 10. Inside the tube 300, a flow path through which the refrigerant flows is formed. The shape of the tube 300 in a cross section perpendicular to the refrigerant flow direction is a flat shape, and the longitudinal direction of the flat shape is along the air flow direction. The air flow direction is a direction perpendicular to the paper surface in FIG.

Each tube 300 has one end connected to the header tank 100 and the other end connected to the header tank 200. Thereby, the internal space of the header tank 100 is communicated with the internal space of the header tank 200 via the respective tubes 300.

Each tube 300 has its longitudinal direction perpendicular to the longitudinal direction of the header tank 100 or the like, and is held in a stacked state along the longitudinal direction of the header tank 100 or the like, that is, the vertical direction. Yes.

The fin 400 is a metal plate bent in a wave shape, and is inserted between adjacent tubes 300. The top of each of the undulating fins 400 is brazed to the side of the tube 300. The “side surface of the tube 300” in the above refers to the upper and lower surfaces in the present embodiment. During the operation of the refrigeration cycle, the heat of the refrigerant is transmitted to the air through the tube 300 and also to the air through the tube 300 and the fins 400. That is, the contact area with air is increased by the fins 400, whereby heat exchange between the air and the refrigerant is performed efficiently.

The portion where all the stacked tubes 300 and fins 400 are arranged is a portion where heat is exchanged between the air and the refrigerant, and is a portion referred to as a so-called “heat exchange core portion”.
Side plates 11 and 12 which are metal plates are provided at positions on both the upper and lower sides of the heat exchange core portion. The side plates 11 and 12 are for reinforcing the heat exchange core part and maintaining its shape by sandwiching the heat exchange core part from above and below.

One end of the side plate 11 is fixed to the header tank 100, and the other end is fixed to the header tank 200. The same applies to the side plate 12. The fin 400 is also disposed between the tube 300 disposed on the uppermost side and the side plate 11 and between the tube 300 disposed on the lowermost side and the side plate 12.

The modulator 500 is a container for receiving a refrigerant from the header tank 200 and separating gas and liquid of the refrigerant. The modulator 500 is formed as an elongated cylindrical container having a substantially cylindrical shape, and is arranged in a state where the longitudinal direction thereof is along the vertical direction. The modulator 500 is disposed at a position opposite to the heat exchange core portion with the header tank 200 interposed therebetween. The position of the modulator 500 may be a position different from the above. For example, the modulator 500 may be disposed at a position on the front side or the back side of the header tank 200 in FIG.

Projections

210 and 220 are formed in a portion of the header tank 200 that faces the modulator 500. Each of the protruding

portions

210 and 220 is a portion in which a part of the plate material constituting the header tank 200 is protruded toward the modulator 500 by pressing from the inside. The “plate material” in the above is specifically the tank member 201.

As shown in FIG. 1, the protrusion 210 is formed at a position on the upper side of the separator SP 2 in the header tank 200. On the other hand, the protrusion 220 is formed at a position below the separator SP2. Each of these

protrusions

210 and 220 is joined to the side surface by a brazing material in a state in which the tip is in contact with the side surface of the modulator 500. In other words, the modulator 500 is joined to the

protrusions

210 and 220 in the header tank 200.

FIG. 2 is a cross-sectional view schematically showing the internal structure of the joint portion. As shown in the figure, a through hole 211 is formed in the protrusion 210. Also, a through hole 511 having the same shape as the through hole 211 is formed in a portion of the modulator 500 that faces the through hole 211. For this reason, a portion above the separator SP 2 in the internal space of the header tank 200 and the internal space of the modulator 500 are communicated with each other by the through hole 211 and the through hole 511. The through hole 211 and the through hole 511 function as a refrigerant passage FP 1 for allowing the refrigerant to flow between the header tank 200 and the modulator 500. Note that the entire edges of the through hole 211 and the through hole 511 are closely joined by a brazing material. For this reason, a part of the refrigerant passing through the refrigerant passage FP1 does not leak to the outside.

Similarly to the above, the protrusion 220 is formed with a through hole 221. A through hole 521 having the same shape as the through hole 221 is also formed in a portion of the modulator 500 facing the through hole 221. For this reason, the part below the separator SP2 in the internal space of the header tank 200 and the internal space of the modulator 500 are communicated with each other by the through hole 221 and the through hole 521. The through hole 221 and the through hole 521 also function as the refrigerant passage FP 2 through which the refrigerant flows between the header tank 200 and the modulator 500. Note that the entire edges of the through hole 221 and the through hole 521 are closely joined by a brazing material. For this reason, a part of the refrigerant passing through the refrigerant passage FP2 does not leak to the outside.

As shown in FIG. 2, in the portion between the protrusion 210 and the protrusion 220, a part of the separator SP2 protrudes outward toward the modulator 500 side. In the present embodiment, in order to avoid such a protruding portion of the separator SP2, the protruding portion 210 and the protruding portion 220 are formed so as to be separated for each refrigerant passage FP1, FP2.

Temporarily, in the configuration in which the entire separator SP2 is accommodated in the header tank 200, the projecting portion 210 and the projecting portion 220 may not be separated. That is, it can be set as the structure by which refrigerant path FP1 and FP2 were each formed with respect to the single protrusion part formed so that the upper and lower sides of separator SP2 might be covered.

In addition, it is good also as an aspect in which the protrusion part in which refrigerant passage FP1 etc. are not formed separately from the

protrusion parts

210 and 220 is further provided in the header tank 200. That is, it is good also as an aspect in which refrigerant passage FP1 grade | etc., Is formed only in the one part projection part 210 grade | etc., Among the several projection part 210 grade | etc., Provided.

Referring to FIG. 1 again, the flow of the refrigerant when the refrigeration cycle is operating will be described. The refrigerant is compressed by a compressor (not shown) on the upstream side of the condenser 10 in the refrigeration cycle, and is supplied to the condenser 10 with its temperature and pressure increased. At this time, almost the entire refrigerant is in a gas phase. The refrigerant flows into the header tank 100 from the receiving unit 110 and is temporarily stored in a space above the separator SP1. Thereafter, the refrigerant flows into the respective tubes 300 and flows toward the header tank 200 through the flow paths in the tubes 300.

When passing through the inside of the tube 300, the refrigerant is cooled by external air that passes through the heat exchange core. That is, heat is released from the refrigerant to the air. Thereby, the refrigerant passing through the inside of the tube 300 decreases its temperature, and part or all of it condenses and changes from the gas phase to the liquid phase. Moreover, the air which passes a heat exchange core part is heated, and the temperature is raised.

The refrigerant that has reached the header tank 200 is temporarily stored in the header tank 200 in a space above the separator SP2. The refrigerant flows into the modulator 500 through the refrigerant passage FP 1 of the protrusion 210 and is temporarily stored in the modulator 500.

The refrigerant flowing into the modulator 500 from the header tank 200 is often in a gas-liquid mixed state. In the modulator 500, gas-liquid separation of the refrigerant is performed. As a result, the liquid-phase refrigerant is accumulated in the lower portion of the modulator 500.

The liquid-phase refrigerant passes through the refrigerant passage FP2 of the protrusion 220, flows into the space below the separator SP2 in the header tank 200, and is temporarily stored in the space. Thereafter, the liquid-phase refrigerant flows into the tube 300 provided below the separators SP1 and SP2, and flows again toward the header tank 100 through the flow path in the tube 300. At this time, the liquid phase refrigerant is further cooled by heat exchange with external air. Of the heat exchange core portion, the portion below the separators SP1 and SP2 is a portion where the liquid refrigerant is cooled, that is, a portion functioning as a so-called “subcool portion”. Hereinafter, this portion is also referred to as “subcool portion SC”. Note that the “parts below the separators SP1 and SP2” in the above are parts below the one-dot chain line DL in FIG.

The refrigerant that has passed through the subcool section SC is temporarily stored in the space below the separator SP1 in the header tank 100. Thereafter, the refrigerant is discharged from the discharge unit 120 and flows toward the throttle valve on the downstream side. The illustration of the throttle valve is omitted.

The effect of the

protrusions

210 and 220 being formed will be described with reference to FIG. FIG. 3A is a view showing an AA cross section of FIG. As shown in the figure, a gap is formed between the header tank 200 and the modulator 500 at a portion where the

protrusions

210 and 220 are not formed. Since most of the portions between the header tank 200 and the modulator 500 are not joined and a gap is formed, heat transfer from the header tank 200 toward the modulator 500 is suppressed. As a result, a situation in which the liquid phase refrigerant in the modulator 500 is vaporized by heat from the header tank 200 is prevented.

FIG. 3 (B) is a view showing a BB cross section of FIG. As shown in the figure, in the portion where the protrusion 210 is formed, the header tank 200, specifically, the front end surface of the protrusion 210 is in contact with a part of the modulator 500. . Note that a contacted portion 501 having a concave surface is formed on the entire portion of the modulator 500 facing the header tank 200 over the entire top and bottom. As a result, substantially the entire tip surface of the protrusion 210 can be brought into contact with the modulator 500. The above configuration is the same in the portion where the protrusion 220 is formed.

As a mode of joining between the header tank 200 and the modulator 500, for example, a mode in which a plate which is a separate part is interposed between the two and the header tank 200, the modulator 500, and the plate are brazed can be considered. However, if the number of parts is increased and the number of joints by brazing filler metal is increased, there is a high possibility that joint failure will occur at some joints. In order to prevent the occurrence of defective bonding, it is preferable that the number of parts to be bonded is as small as possible.

Therefore, in the condenser 10 according to the present embodiment, the modulator 500 is directly joined to the projecting

portions

210 and 220 of the header tank 200 instead of interposing another part between the header tank 200 and the modulator 500. I am going to do that. The protruding

portions

210 and 220 are portions formed by pressing the header tank 200, specifically, a part of the tank member 201. For this reason, also in the embodiment of the present embodiment, since the number of joints by the brazing material does not increase, the occurrence of joint failure due to the increase of joints is prevented.

FIG. 4 shows a cross section of the header tank 200 at the position of the protrusion 210, as in FIG. 3 (B). “M” shown in the figure is the amount of protrusion of the protrusion 210 and the protrusion 220. As used herein, the “projection amount” refers to the distance from the portion where the

protrusions

210 and 220 are not formed in the portion facing the modulator 500 in the cross section shown in FIG. That's it. Hereinafter, this protrusion amount is also referred to as “protrusion amount M”.

The protrusion amount M is preferably 0.5 mm or more. If the protruding amount M is smaller than 0.5 mm, the brazing material may enter the gap between the header tank 200 and the modulator 500. As a result, heat insulation between the two is not sufficiently performed, and the liquid refrigerant in the modulator 500 may be vaporized.

“T” shown in FIG. 4 is the thickness of the header tank 200. The “plate thickness” here is the plate thickness of the plate-like member in which the protruding portion 210 or the like is formed in the header tank 200, that is, the plate thickness of the tank member 201, and the protruding portion 210 or the like is formed. It is the plate | board thickness of the tank member 201 in time before. Hereinafter, this plate thickness is also expressed as “plate thickness t”. In the present embodiment, the plate thickness of the tank member 201 before the protrusions 210 and the like are formed is substantially the plate thickness t. However, the initial plate thickness of the tank member 201 may not be uniform throughout.

“R” shown in FIG. 4 is the inner dimension of the header tank 200 along the air flow direction. Specifically, it is the internal dimension along the same direction of the plate-like member in which the protruding portion 210 and the like are formed in the header tank 200. Hereinafter, this inner dimension is also referred to as “inner dimension R”. The “plate member on which the protruding portion 210 and the like are formed” in the above is the tank member 201.

In FIG. 4, the shape of the tank member 201 before the protrusions 210 and the like are formed is indicated by a one-dot chain line. The shape of this alternate long and short dash line is equal to the shape of the tank member 201 in the portion where the

protrusions

210 and 220 are not formed.

When the protruding portion 210 or the like is formed, a part of the tank member 201 is pressed, and the portion is deformed by the protruding amount M in the direction indicated by the arrow in FIG. With such deformation, the plate thickness of a part of the tank member 201 becomes smaller than the plate thickness t described above. Such a portion is a root portion of the projecting portion 210 and the like, and is a portion surrounded by a dotted line with a symbol RD in FIG. In the header tank 200, the portion where the plate thickness is reduced as described above by forming the protruding

portions

210 and 220 by press working is also referred to as a “thinned portion RD” below.

As shown in FIG. 5, the larger the protrusion amount M on the horizontal axis, the smaller the plate thickness on the vertical axis in the thinned portion RD. As a result, the strength of the header tank 200 against the internal pressure is weakened. As is well known, during the operation of the refrigeration cycle, the pressure of the refrigerant inside the condenser 10 is high, so that the header tank 200 is required to have a certain strength. Therefore, if the protrusion amount M becomes too large, there is a concern that the thickness of the thinned portion RD becomes small and the strength of the header tank 200 is insufficient.

6 shows the relationship between the protruding amount M of the protruding portion 210 and the stress generated in the thinned portion RD. In FIG. 6, the protrusion amount M of the protrusions 210 and the like is shown on the horizontal axis, and the stress generated in the thinned portion RD is shown on the vertical axis. Each line of FIG. 6 shows the stress when an internal pressure of 10 MPa is generated inside the header tank 200. This internal pressure of 10 MPa is the maximum value of the internal pressure that can occur during normal operation of the refrigeration cycle.

Line L1 is a stress generated in the thinned portion RD when the plate thickness t is 0.9 mm and the inner dimension R is 20 mm. According to what the present inventors have confirmed through experiments and the like, in the header tank 200 having the above-described shape, even when the

protrusions

210 and 220 are not formed, one of the header tanks 200 does not endure a pressure exceeding 10 MPa. The part was damaged. The stress generated in the thinned portion RD at this time is expressed as “limit stress σ0” below.

The stress of the thinned portion RD indicated by the line L1 or the like increases according to the protruding amount M of the protruding portion 210 or the like. For this reason, in the header tank 200 having the above-described shape indicated by the line L1, even when the

protrusions

210 and 220 are not formed, the stress of the thinned portion RD reaches the limit stress σ0, so the

protrusions

210 and 220 are formed. Can not do it.

The line L2 in FIG. 6 is the stress generated in the thinned portion RD when the plate thickness t is 0.9 mm and the inner dimension R is 15 mm. In this case, since the inner dimension R is smaller than that in the case of the line L1, the stress of the thinned portion RD is also reduced accordingly. In the header tank 200 having the above-described shape, if the protruding amount M is approximately 0.5 mm or less, the stress of the thinned portion RD is smaller than the limit stress σ0, and therefore the header tank 200 is not damaged by the internal pressure.

6 is a stress generated in the thinned portion RD when the plate thickness t is 1.4 mm and the inner dimension R is 12 mm. In the header tank 200 having the above-described shape, if the protruding amount M is approximately 1.5 mm or less, the stress of the thinned portion RD becomes smaller than the limit stress σ0, and therefore the header tank 200 is not damaged by the internal pressure.

According to experiments and analyzes conducted by the present inventors, when the protrusion amount M, the plate thickness t, and the inner dimension R are expressed in units of millimeters, the protrusion amount M satisfies the following formula (1). Then, the knowledge that the stress of the thinned portion RD can be suppressed to be smaller than the limit stress σ0 is obtained. Note that “t” in the formula (1) when the initial plate thickness of the tank member 201 is not uniform indicates the initial plate thickness in the portion of the tank member 201 where the thinned portion RD is formed. To do.
M ≦ 2.5−0.12 × R / t (1)

If the header tank 200 is configured so as to satisfy the condition expressed by the above formula (1), the stress generated in the thinned portion RD can be suppressed to be smaller than the limit stress σ0 during normal use. Damage to the tank 200 is prevented.

The second embodiment will be described with reference to FIG. This embodiment is different from the first embodiment only in the configuration of a portion of the modulator 500 that faces the protruding portion 210 and the like, and the rest is the same as the first embodiment.

FIG. 7 shows a cross section of the header tank 200 and the modulator 500 at the position of the protrusion 210, as in FIG. 3 (B). In the present embodiment, a part of the modulator 500 is formed so as to protrude toward the header tank 200. The portion formed in this way is also referred to as “protection portion 502” below. The front end portion of the protection part 502 is concave, and the shape of the inner surface thereof is substantially the same as the surface shape of the tank member 201. The entire inner surface of the protection unit 502 is in contact with the surface of the tank member 201 and is brazed to the surface. A portion of the surface of the tank member 201 covered from the outside by the protective portion 502 includes the entire thinned portion RD.

In addition, refrigerant passages FP1 and FP2 similar to those in the first embodiment are formed in a part of the protective portion 502 so as to penetrate the protruding portion 210 and the protective portion 502, but FIG. Is omitted.

As described above, in the condenser 10 according to the present embodiment, the protection part 502 formed in the modulator 500 covers the entire thinning part RD from the outside. The durability of the header tank 200 against the internal pressure is improved by covering the thinned portion RD whose durability is relatively small from the outside. For this reason, in the case of this embodiment, the protrusion amount M does not need to satisfy said Formula (1).

If the durability of the header tank 200 can be sufficiently secured, only a part of the thinned portion RD is covered by the protective portion 502, and the other part of the thinned portion RD is outside. It is good also as an aspect which is exposed.

The embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those in which those skilled in the art appropriately modify the design of these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the specific examples described above and their arrangement, conditions, shape, and the like are not limited to those illustrated, and can be changed as appropriate. Each element included in each of the specific examples described above can be appropriately combined as long as no technical contradiction occurs.

Claims

A condenser (10) for condensing refrigerant by heat exchange with air,
A plurality of tubes (300) through which refrigerant passes;
A header tank (200) to which each said tube is connected;
A container joined to the header tank, the modulator (500) for separating the gas-liquid refrigerant received from the header tank,
Protruding portions (210, 220) protruding toward the modulator side are formed by pressing in a portion of the header tank facing the modulator,
The modulator is a condenser joined to the protruding portion of the header tank.
The condenser according to claim 1, wherein a refrigerant passage (FP1, FP2) for allowing a refrigerant to flow between the header tank and the modulator is formed in the protrusion.
A plurality of the refrigerant passages are formed,
The condenser according to claim 2, wherein the protrusion is divided for each of the refrigerant passages.
The condenser according to any one of claims 1 to 3, wherein a protruding amount of the protruding portion is 0.5 mm or more.
The projecting amount of the projecting portion is expressed in millimeters, M, the inner dimension of the header tank along the air flow direction is expressed in millimeters, and the header tank thickness is defined as R. 5. The condenser according to claim 4, wherein the header tank is configured so as to satisfy a condition of M ≦ 2.5−0.12 × R / t when t is expressed in millimeters. .
Of the header tank, when the projecting portion is formed by pressing, the portion where the plate thickness is reduced, and the thinned portion (RD),
The condenser according to any one of claims 1 to 5, wherein a protective part (502) formed on the modulator covers at least a part of the thinning part from the outside.