JPH07159000A - Refrigerant condenser - Google Patents

Abstract

PURPOSE:To make it possible to eliminate joint troubles produced when a fixing unit is brazed with a manifold and tack-braze easily the fixing unit with the manifold having a cylindrical body formed by extrusion molding. CONSTITUTION:A first manifold and a second manifold 19 communicating with a condensation tube 10a which forms a refrigerant passage are installed to both sides of a core unit which comprises a condensation unit and a supercooling unit. A fixing unit 14, which is formed in one piece with an outside manifold plate 19b forming a liquid receiving unit, is installed to the second manifold 19 by means of extrusion molding. This fixing unit 14 is provided with a through hole 14a through which a fixing bolt 23 is inserted. The bolt 23 inserted into the through hole 14a is fastened with a nut 24 so as to fix a mounting bracket 15 on a vehicle side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating cycle refrigerant condenser.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 12, a refrigerant condenser of a refrigeration cycle mounted on a vehicle is mounted on a vehicle side bracket (via a fixing plate 200 attached to a header 100 of the refrigerant condenser). (Not shown). The header 100 closes an inner header 101 into which the end of the tube 110 is inserted, an outer header 102 combined with the inner header 101, and both end openings of a tubular body formed by the inner header 101 and the outer header 102. It is composed of a cap (not shown). The fixing plate 200 has a joint 210 curved in an arc shape, and is temporarily brazed to the outer peripheral surface of the outer header 102 having a substantially circular cross section at the center of the joint 210, and then integrally brazed. It is joined to the outer peripheral surface of the outer header 102. The outer header 102 of the fixing plate 200
In order to improve productivity, spot welding is generally used for temporary attachment to the.

[0003]

However, in the conventional fixing plate 200, the inner peripheral surface of the joint portion 210 is formed with a slightly larger radius of curvature than the outer peripheral surface of the outer header 102, and therefore both ends of the joint portion 210 are formed. The portion does not come into close contact with the outer peripheral surface of the outer header 102, so that floating easily occurs between them.
Therefore, when a brazing defect occurs at the end of the fixing plate 200, the vibration of the vehicle is transmitted to the fixing plate 200, so that the outer header 102 and the fixing plate 200 are transmitted.
There is a risk that the brazing surface of the steel sheet may be peeled off or the fixing plate 200 may be damaged. Further, since it is necessary to temporarily attach the fixing plate 200 to the outer header 102 before the fixing plate 200 is joined to the outer header 102 by integral brazing, the number of manufacturing steps is increased and the cost is increased. There was a problem.

The header 100 shown in FIG. 12 is also used.
Is a split type that is divided into an inner header 101 and an outer header 102, it is easy to temporarily attach the fixing plate 200 to the outer header 102 by spot welding or the like, but as shown in FIG. When using a tubular header 300 whose internal space is closed as an extrusion molded product, a jig cannot be inserted into the header 300 when temporarily attaching the fixing plate 200, so that temporary welding by spot welding is performed. It is difficult to attach.

Therefore, when the tubular header 300 is used, the fixing plate 200 is directly joined to the header 300 by integral brazing without temporarily attaching the fixing plate 200 to the header 300. The problem that it is difficult to obtain arises. Although the fixing plate 200 can be temporarily attached by general welding instead of spot welding, it is not practical because the wall surface of the header 300 may be excessively melted and holes may be opened.

The present invention has been made in view of the above circumstances, and a first object thereof is to provide a refrigerant condenser capable of eliminating the problems caused by brazing and joining a header and a fixed portion. A second object is to provide a refrigerant condenser in which a fixing portion can be easily and temporarily attached to a header having a tubular body formed by extrusion molding.

[0007]

In order to achieve the first object of the present invention, a plurality of refrigerant passages are arranged in parallel, and heat exchange between the refrigerant flowing through the respective refrigerant passages and the heat exchange medium. And a pair of headers provided so as to communicate with both ends of each of the refrigerant passages, and at least one of the pair of headers has a bracket for mounting the refrigerant condenser. The technical means is that the fixing portion for fixing the is integrally formed by extrusion molding.

Further, in order to achieve the above-mentioned second object, the present invention has a core portion in which a plurality of refrigerant passages are arranged in parallel and heat exchange between the refrigerant flowing through each refrigerant passage and the heat exchange medium. And a pair of headers provided in communication with both ends of each of the refrigerant passages, at least one header of the pair of headers has a tubular body formed by extrusion molding, and A temporary attaching portion for temporarily attaching the fixing portion for fixing the bracket for mounting the refrigerant condenser,
The technical means is to be provided integrally with the cylindrical body by extrusion molding.

[0009]

In the refrigerant condenser of the present invention as set forth in claim 1, since the fixing portion for fixing the mounting bracket is integrally formed with at least one header by extrusion molding, the fixing portion will be one header. There is no need to join them by attaching. Therefore, it is not necessary to temporarily attach the fixing portion to one of the headers before joining.

Further, in the refrigerant condenser of the present invention as set forth in claim 2, the temporary attachment portion is provided integrally with the cylindrical body of the header by extrusion molding. Therefore, the fixing portion for fixing the mounting bracket can be temporarily attached to the temporary attaching portion and then joined to the header.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the refrigerant condenser of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a refrigeration cycle of a vehicle air conditioner. The refrigeration cycle 1 includes a refrigerant compressor 2,
Liquid receiver integrated refrigerant condenser 3 (hereinafter abbreviated as refrigerant condenser 3), sight glass 4, expansion valve 5, and refrigerant evaporator 6
1, each of which is connected by a refrigerant pipe 7 such as a metal pipe or a rubber hose as shown in FIG.

When the rotational power is transmitted from the running engine 8 of the vehicle through an electromagnetic clutch (not shown), the refrigerant compressor 2 draws in the gas refrigerant evaporated in the refrigerant evaporator 6 and compresses it into high temperature and high pressure. And then discharge.

The refrigerant condenser 3 condenses the gas refrigerant discharged from the refrigerant compressor 2 into a liquefied gas by blowing air from a cooling fan 9, and a gas-liquid two-phase refrigerant condensed and liquefied in the condensing section 10. Liquid receiving part 1 for separating gas refrigerant and liquid refrigerant
1 (see FIG. 2) and a subcooling unit 12 that supercools the liquid refrigerant separated by the liquid receiving unit 11 by receiving the airflow of the cooling fan 9. The structure of the refrigerant condenser 3 will be described in detail below.

The sight glass 4 is connected to the downstream side of the refrigerant flow from the refrigerant condenser 3 and observes the state of the refrigerant circulating in the refrigeration cycle 1. The sight glass 4 is inspected in the engine room (not shown) of the vehicle. Where people can easily see,
For example, it is mounted alone in the middle of the outlet side refrigerant pipe 7 adjacent to the refrigerant condenser 3.

The expansion valve 5 is connected to the refrigerant inlet side of the refrigerant evaporator 6 and adiabatically expands the high temperature high pressure liquid refrigerant introduced through the sight glass 4 into a low temperature low pressure atomized refrigerant.
In this embodiment, a temperature-operated expansion valve that automatically adjusts the valve opening is used so that the degree of superheat of the refrigerant at the refrigerant outlet of the refrigerant evaporator 6 is maintained at a predetermined value.

The refrigerant evaporator 6 is arranged in a duct (not shown) that guides blown air into the vehicle compartment, and the low temperature and low pressure refrigerant introduced from the expansion valve 5 is sent by the operation of a blower (not shown). Evaporate and vaporize by exchanging heat with outdoor air or indoor air.

Next, the refrigerant condenser 3 will be described with reference to FIG.
And it demonstrates in detail based on FIG. FIG. 2 shows a refrigerant condenser 3
FIG. The refrigerant condenser 3 has, for example, a height of 30.
With a size of 0 to 400 mm and a width of 300 to 600 mm,
Through the fixing plate 13 and the fixing portion 14 (see FIG. 3), in a place where the running wind is easily received in the engine room,
It is fixed to a mounting bracket 15 on the vehicle side.

This refrigerant condenser 3 is, as shown in FIG.
A core portion including the condenser portion 10 and the supercooling portion 12, side plates 16 and 17 respectively arranged at the upper end portion and the lower end portion of the core portion, and arranged at one end side (the left end side in FIG. 2) of the core portion. It is composed of a first header 18, a second header 19 arranged on the other end side of the core part, an inlet pipe 20 and an outlet pipe 21 which are assembled to the first header 18, and is manufactured by integral brazing in a furnace. Has been done.

The condensing section 10 comprises a plurality of condensing tubes 10.
a and corrugated fins 10b are alternately laminated,
It is formed on the upper side of the core portion. The supercooling portion 12 is formed by alternately stacking a plurality of supercooling tubes 12a and corrugated fins 12b, and is formed on the lower side of the core portion.

The condensation tube 10a and the supercooling tube 12a are made of a material such as aluminum or aluminum alloy having excellent corrosion resistance and thermal conductivity, and are extruded to form a plurality of refrigerant passages (shown in the figure). Not manufactured). The number of the condensing tubes 10a is larger than the number of the supercooling tubes 12a, and according to experimental experience, it is desirable that the number of the supercooling tubes 12a is about 15 to 20% of the entire core portion.

The corrugated fins 10b and 12b are for improving the heat radiation efficiency of the refrigerant, and are made by pressing corrugated (corrugated) aluminum or aluminum alloy plates whose both sides are clad with a brazing material. .

The side plates 16 and 17 are connected to the condenser section 10.
Is disposed above the corrugated fins 10b disposed at the uppermost end and below the corrugated fins 12b disposed at the lowermost end of the supercooling unit 12 to hold the core portion, and the surface thereof is clad with a brazing material. The treated aluminum or aluminum alloy plate is pressed into a predetermined shape. Further, the side plates 16 and 17 have through holes (not shown) through which bolts 22 (see FIG. 1) for fixing the mounting stays 9 a of the cooling fan 9 are inserted.
6 is provided at one place and side plate 17 is provided at two places.

The first header 18 is for each condensing tube 10
a and a tube for communicating with each of the supercooling tubes 12a, which is composed of an inner header plate 18a, an outer header plate 18b, a pair of caps 18c, and a first separator 18d, and has corrosion resistance and thermal conductivity, respectively. It is molded from aluminum or aluminum alloy, which has excellent properties.

The inner header plate 18a forms the core portion side of the first header 18, and is formed by press working so as to have a circular arc-shaped cross section. Ends of the condensation tubes 10a and the supercooling tubes 12a are inserted into the inner header plate 18a, and ends of the side plates 16 and 17 are inserted and joined by brazing. There is.

The outer header plate 18b forms the outer side of the first header 18, and is provided by press working so that its cross-sectional shape is a semi-circular shape. Into the outer header plate 18b, the respective ends of the inlet pipe 20 and the outlet pipe 21 are inserted above and below, and joined by brazing. Also, the outer header plate 18b
The fixing plate 13 is temporarily attached by spot welding to the approximately central portion of the and then joined by brazing.

The fixing plate 13 is provided with two through holes (not shown) for inserting the fixing bolts 23, and the bolts inserted through the through holes are attached to the mounting bracket 15. A nut (not shown) is tightened and fixed to 23.

The cap 18c is the inner header plate 1
8a and the outer header plate 18b close the openings at both ends of the cylindrical body, which is formed into a predetermined shape by press working.

The first separator 18d is the first header 18
A first condensation-side communication chamber 18e that communicates with each condensation tube 10a, and a first condensation chamber that communicates with each subcooling tube 12a
It is partitioned into the supercooling side communication chamber 18f, and is inserted into the inner header plate 18a and the outer header plate 18b and then joined by brazing. The inlet pipe 20 is attached to the outer header plate 18b forming the first condensation side communication chamber 18e, and the outlet pipe 21 is
It is assembled to the outer header plate 18b forming the first supercooling-side communication chamber 18f (see FIG. 2).

The second header 19 is for each condensing tube 10
a and one of the subcooling tubes 12a, and the other tubular body forming the liquid receiving portion 11 (the tubular body of the present invention). The inner header plate 19a, the outer header plate 19b, It is composed of a pair of caps 19c and a second separator 19d, and has corrosion resistance,
It is formed of aluminum or an aluminum alloy having excellent thermal conductivity.

The inner header plate 19a forms the core portion side of one of the cylinders, and is formed by press working so as to have a circular arc-shaped cross section. The ends of the condensation tubes 10a and the supercooling tubes 12a are inserted into the inner header plate 19a, and the ends of the side plates 16 and 17 are inserted into the inner header plate 19a.
Each is joined by brazing.

The outer header plate 19b forms the outer side of one cylinder and the other cylinder, and is formed by extrusion molding to have a cross-sectional shape as shown in FIG. The other tubular body forming the liquid receiving portion 11 is provided so that its cross-sectional area is larger than that of the one tubular body (see FIG. 3).

The outer header plate 19b is provided with a partition wall 19b '(that is, a partition wall 19b' for partitioning between one cylinder formed by being combined with the inner header plate 19a and the other cylinder formed by the outer header plate 19b itself). Communication ports 19e and 19f, which communicate one cylinder and the other cylinder, are opened at two locations in the upper and lower portions in the portion that forms the outside of the one cylinder). Further, as shown in FIG. 3, the fixing portion 14 is integrally provided on the outer header plate 19b forming the other cylinder by extrusion molding.

The fixed portion 14 has an outer header plate 19b.
Are provided over the entire length of the outer header plate 19b from one end to the other end, and two through holes 14a for inserting the fixing bolts 23 are provided at approximately the center in the longitudinal direction, near the upper end. Has a through hole (not shown) through which a bolt 22 for fixing the mounting stay 9a of the cooling fan 9 is inserted. The fixing portion 14 is fixed to the mounting bracket 15 by tightening a nut 24 on a bolt 23 inserted in the through hole 14a.

The cap 19c closes both end openings of the one cylinder and the other cylinder, and is formed into a predetermined shape by press working. Second separator 19
“D” divides the inside of one cylinder into a second condensation-side communication chamber 19g that communicates with each condensation tube 10a and a second supercooling-side communication chamber 19h that communicates with each supercooling tube 12a. After being inserted into the inner header plate 19a and the outer header plate 19b, they are joined by brazing.

The communication ports 19e and 19f provided in the partition wall 19b 'of the outer header plate 19b are provided at a relatively low position above the second separator 19d so that the second condensation side communication chamber is provided. 19g and the liquid receiving part 11 are connected, the communication port 19f is provided below the second separator 19d, and the second supercooling side communication chamber 19h and the liquid receiving part 11 are connected.
Communicate with.

The cooling fan 9 for blowing air to the refrigerant condenser 3 is bolted to the fixing portions 14 integrally provided with the side plates 16 and 17 and the second header 19 via the four mounting stays 9a. It is fixed by tightening 22 and a nut (not shown) (see FIG. 1).

Next, the operation of this embodiment will be described. When the electromagnetic clutch is energized, the rotational output of the engine 8 is transmitted to the refrigerant compressor 2 and the refrigerant compressor 2 is rotationally driven.
The high-temperature and high-pressure gas refrigerant compressed by the refrigerant compressor 2 is guided to the refrigerant condenser 3 and introduced from the inlet pipe 20 to the first header 18.
Flows into the first condensation side communication chamber 18e. The refrigerant flowing into the first condensing side communication chamber 18e is distributed to the plurality of condensing tubes 10a forming the condensing unit 10, and when passing through each condensing tube 10a, the corrugated fins 10b.
Through which heat is exchanged with the outdoor air to be condensed and liquefied. Almost liquefied refrigerant is used in the second condensation-side communication chamber 1 of the second header 19.
After flowing into 9 g and once being collected, the second separator 19
It flows into the liquid receiving part 11 through the communication port 19e above d.

The gas-liquid two-phase refrigerant flowing into the liquid receiving section 11 is
Since the cross-sectional area of the liquid receiving section 11 is large, the speed of the refrigerant is slowed down, and the bubble-shaped gas refrigerant rises due to buoyancy, so that the gas refrigerant and the liquid refrigerant are separated from each other, and the upper portion of the liquid receiving section 11 is separated. The gas refrigerant and the liquid refrigerant accumulate in the lower part. If the refrigeration cycle 1 is filled with a sufficient amount of refrigerant to form a liquid level in the liquid receiving section 11, the liquid refrigerant separated in the liquid receiving section 11 (saturated liquid refrigerant having no degree of supercooling)
Flows out into the second supercooling side communication chamber 19h through the communication port 19f provided below the second separator 19d.

The liquid refrigerant flowing into the second supercooling side communication chamber 19h is distributed to the respective supercooling tubes 12a, and when passing through the respective supercooling tubes 12a, the outside air is passed through the corrugated fins 12b. Is supercooled by heat exchange with and becomes a liquid refrigerant having a supercooling degree and flows into the first subcooling-side communication chamber 18f of the first header 18.

The liquid refrigerant flowing into the first subcooling side communication chamber 18f flows out of the refrigerant condenser 3 through the outlet pipe 21, and then passes through the sight glass 4 to be guided to the expansion valve 5. Since only the liquid refrigerant that does not contain the gas refrigerant is supplied to the expansion valve 5, the refrigerant circulation amount of the liquid refrigerant flowing into the expansion valve 5 does not decrease, and a sufficient amount of the refrigerant is decompressed to expand the refrigerant. It can be supplied to the evaporator 6.

In the refrigerant evaporator 6, heat exchange is performed between the low-temperature low-pressure refrigerant decompressed and expanded by the expansion valve 5 and the air flowing in the duct. The gas refrigerant evaporated and vaporized by heat exchange with air is sucked into the refrigerant compressor 2 again, and the refrigeration cycle 1
Circulate. On the other hand, the air cooled by heat exchange with the low-temperature low-pressure refrigerant flows in the duct and is supplied into the vehicle interior.

As described above, in this embodiment, the fixing portion 14
Is integrally formed with the outer header plate 19b of the second header 19 by extrusion molding, it is not necessary to braze the fixing portion 14 and the second header 19 as in the conventional case.

Next, a second embodiment of the present invention will be described. 4 is a cross-sectional view of the second header 19, and FIG. 5 is a perspective view of the outer header plate 19b and the fixing plate of the second header 19. The second header 19 of the present embodiment is fixed to the mounting bracket 15 via the fixing plate 25 (fixing portion of the present invention) provided separately from the outer header plate 19b. The fixing plate 25 is the outer header plate 1
After being temporarily attached to the temporary attachment portion 26 provided on 9b, they are joined by brazing.

The temporary attachment portion 26 is formed integrally with the outer header plate 19b by extrusion molding (see FIG. 5), and protrudes from the outer peripheral surface of the outer header plate 19b and is bent into a hook shape (L-shaped cross section). It is provided.

The fixing plate 25 is a supporting piece provided with a joining piece 25a curved along the outer peripheral surface of the outer header plate 19b and a through hole 25b for inserting the fixing bolt 23 (see FIG. 1). 25c and. In this fixing plate 25, the joining piece 25a is in close contact with the outer peripheral surface of the outer header plate 19b, and the end portion of the joining piece 25a is inserted into the recess formed by the temporary attachment portion 26 and the outer peripheral surface of the outer header plate 19b. In this state, it is temporarily attached to the end of the temporary attachment portion 26 by welding (A in FIG. 4) and then joined to the outer header plate 19b by integral brazing.

As described above, in this embodiment, it is not necessary to temporarily fix the fixing plate 25 directly to the outer peripheral surface of the outer header plate 19b, and the temporary fixing portion 26 provided integrally with the outer header plate 19b is used. Can be done. Therefore, even when the fixing plate 25 is temporarily attached to the temporary attaching portion 26 by welding, the outer header plate 1
No holes are formed in the 9b by welding, and the fixing plate 25 can be easily attached temporarily.

Next, a third embodiment of the present invention will be described. 6 is a sectional view of the second header, and FIG. 7 is a perspective view of the outer header plate 19b and the fixing plate 25 of the second header. In this embodiment, similarly to the second embodiment, the outer header plate 19b is provided with a temporary attachment portion 26 for temporarily attaching the fixing plate 25, and the temporary attachment portion 26 is formed by extrusion molding. Integrated with the plate 19b,
It is provided upright on the outer peripheral surface of the outer header plate 19b.

The fixing plate 25 comprises a joining piece 25a and a supporting piece 25c as in the second embodiment.
The tip portion of 5a is bent along the temporary attachment portion 26.
The fixing plate 25 is provided with the joining piece 25a in close contact with the outer peripheral surface of the outer header plate 19b, and the temporary mounting portion 2
6 and the end of the joining piece 25a are temporarily attached by spot welding (position shown by an arrow in FIG. 6), and then joined to the outer header plate 19b by integral brazing. Thus, in this embodiment, the fixing plate 25 can be easily temporarily attached to the temporary attachment portion 26 provided integrally with the outer header plate 19b by spot welding.

Next, a fourth embodiment of the present invention will be described. FIG. 8 is a sectional view of the refrigerant condenser 3 according to the fourth embodiment.
As shown in FIG. 8, in the refrigerant condenser 3 of the present embodiment, a separator 27 is added to each of the first subcooling-side communication chamber 18f and the second subcooling-side communication chamber 19h to connect the first subcooling-side communication chamber 18h. The refrigerant is allowed to flow in an S shape between the chamber 18f and the second supercooling-side communication chamber 19h.

Next, a fifth embodiment of the present invention will be described. FIG. 9 is a sectional view of the refrigerant condenser 3 according to the fifth embodiment.
As shown in FIG. 9, in the refrigerant condenser 3 of the present embodiment, a separator 28 is added to each of the first condensing side communication chamber 18e and the second condensing side communication chamber 19g so that the first condensing side communication chamber 18e.
The refrigerant is allowed to flow in an S shape between the second condensing side communication chamber 19g and the second condensing side communication chamber 19g.

[Modification] In each of the above-described embodiments, the first header 18 is of the split type consisting of the inner header plate 18a and the outer header plate 18b, but it may be integrally molded by extrusion molding. As a result, the first header 1
The eight fixing plates 13 can be integrally provided with the first header 18 by extrusion molding. Further, even when the first header 18 is of the split type, as shown in FIG. 10, the outer header plate 18b of the first header 18 and the fixing plate 13 may be integrally provided by extrusion molding. Since the second header 19 having the liquid receiving portion 11 needs to open the communication ports 19e and 19f in the outer header plate 19b, it is preferable to use a split type of the inner header plate 19a and the outer header plate 19b. good.

In the refrigerant condenser 3 of each embodiment, the second
Although the case where the liquid receiving unit 11 is integrally formed with the header 19 is shown, as shown in FIG. 11, the refrigerant condenser 3 without the liquid receiving unit 11 may be used. In this case, the second header 19 can have the same shape as the first header 18.

[0053]

In the refrigerant condenser according to the first aspect of the present invention, the fixing portion is integrally formed with at least one header by extrusion molding, so that the header and the fixing portion are not brazed. As a result, both brazing defects,
There is no risk of problems such as peeling of the brazing surface. Also,
Since it is not necessary to temporarily attach the fixing portion to the header, the number of manufacturing steps can be reduced and the cost can be reduced.
In the refrigerant condenser of the present invention according to claim 2, the temporary attachment portion is integrally formed with the tubular body of at least one of the headers by extrusion molding so that the attachment bracket is fixed to the temporary attachment portion. The part can be easily attached temporarily. For this reason, compared with the case of joining directly by brazing etc. without temporarily attaching the fixed part,
It is possible to stabilize the assembling accuracy of the fixed portion with respect to the header.

[Brief description of drawings]

FIG. 1 is a refrigeration cycle diagram of a vehicle air conditioner.

FIG. 2 is a sectional view of a refrigerant condenser (first embodiment).

FIG. 3 is a cross-sectional view showing a state in which a second header is attached to a vehicle body.

FIG. 4 is a sectional view of a second header according to the second embodiment.

FIG. 5 is a perspective view of an outer header plate and a fixing portion according to the second embodiment.

FIG. 6 is a sectional view of a second header according to the third embodiment.

FIG. 7 is a sectional view of an outer header plate and a fixing portion according to the third embodiment.

FIG. 8 is a cross-sectional view of a refrigerant condenser according to a fourth embodiment.

FIG. 9 is a sectional view of a refrigerant condenser according to a fifth embodiment.

FIG. 10 is a cross-sectional view of a first header showing a modified example of this embodiment.

FIG. 11 is a cross-sectional view of a refrigerant condenser showing a modified example of this embodiment.

FIG. 12 is a cross-sectional view showing a joined state of a header and a fixing portion according to a conventional technique.

FIG. 13 is a cross-sectional view showing a joined state of a header and a fixed portion according to a conventional technique.

[Explanation of symbols]

 3 Refrigerant condenser 10 Condensing part (core part) 10a Condensing tube (refrigerant passage) 12 Supercooling part (core part) 12a Supercooling tube (refrigerant passage) 14 Fixing part 15 Mounting bracket 18 First header 19 Second Header 25 Fixing plate (fixing part) 26 Temporary mounting part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Yamanaka 1-1, Showa-cho, Kariya city, Aichi Prefecture Nihondenso Co., Ltd.

Claims (2)

[Claims] 1. A core section, in which a plurality of refrigerant passages are arranged in parallel, for exchanging heat between a refrigerant flowing through the respective refrigerant passages and a heat exchange medium, and both ends of the respective refrigerant passages are connected to each other. And a pair of headers, and at least one of the pair of headers,
A refrigerant condenser, wherein a fixing portion for fixing the mounting bracket of the refrigerant condenser is integrally provided by extrusion molding. 2. A core section, in which a plurality of refrigerant passages are arranged in parallel, for exchanging heat between a refrigerant flowing through each of the refrigerant passages and a heat exchange medium, and both ends of each of the refrigerant passages are communicated with each other. At least one of the pair of headers has a tubular body formed by extrusion molding, and a fixing portion for fixing the bracket for mounting the refrigerant condenser is provisionally provided. A refrigerant condenser, wherein a temporary attachment portion for attachment is provided integrally with the cylindrical body by extrusion molding.