JP2001033121A - Heat exchanger integrated with liquid receiver, and liquid receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a heat exchanger integrated with a liquid receiver by decreasing the number of parts and the labor for assembling work. SOLUTION: In the heat exchanger integrated with a liquid receiver, an internally threaded member 3 of aluminum alloy is fitted in an opening on one end side of an aluminum alloy liquid receiver body 2 assembled along the widthwise direction of a heat exchanger body 1. An externally threaded resin cap 4 having an externally threaded part 42, being screwed into an internally threaded part 38 provided on the inner circumference of the internally threaded member 3, is screwed into the internally threaded member 3. The externally threaded resin cap 4 is provided with a filter 5 molded integrally of resin. According to the structure, the number of parts is decreased and scoring (possibility of twisting off an externally threaded screw) is prevented. Furthermore, number of O-rings 43 can be decreased from two to one by pressing a seal part 39, provided at the open end of the internally threaded member 3, against an annular abutting part 46 provided at one end of the externally threaded cap 4 to bite into the abutting part 46 thereby ensuring airtightness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver integrated heat exchanger in which a receiver body containing a filter and a dryer is integrated with a heat exchanger body.

[0002]

2. Description of the Related Art Conventionally, JP-A-4-43271 and JP-A-9-324962 disclose a liquid receiving device having a filter or dryer built-in and a heat exchanger body. Body heat exchangers have been proposed. When it is necessary to replace the filter or dryer in the receiver body, replacing the receiver body itself integrated with the heat exchanger body is extremely expensive and uneconomical. Will occur.

In order to solve the problem, a detachable cap is attached to the opening end of the receiver body, the cap is removed at the time of replacement work, a filter or a dryer in the receiver body is pulled out, and a new one is removed. After the filter or dryer is placed in the receiver main body, the opening end of the receiver main body is closed with a cap.

[0004] As such a heat exchanger integrated with a receiver (prior art) 100, a filter 1 as shown in FIG.
There is one in which a substantially cylindrical liquid receiver main body 102 containing a heat exchanger 01 is integrated with a heat exchanger main body 103 for condensing and liquefying a refrigerant. A substantially cylindrical female screw member 104 having one open end is joined to one end side of the liquid receiver main body 102 using joining means such as brazing.
4 has a male screw cap 105 screwed therein.

On the outer periphery of the male screw cap 105, there are formed two annular grooves 106 and 107 and a male screw portion 108 which is screwed into a female screw portion provided on the inner periphery of the male screw cap 105. I have. Then, the receiver main body 102
The inner circumference of the outer ring and two annular grooves 106 of the male screw cap 105,
107, two O-rings 111 and 112 are mounted.

Here, two O-rings 111 and 112 are mounted between the receiver main body 102 and the male screw cap 105 because the inner (refrigerant side) O-ring 111 is located outside (outside air side). By blocking the contact with the outside air by the O-ring 112), the corrosion of the inner O-ring 111 due to the contact with the outside air (particularly rainwater or wet water) is prevented, and the leakage of the refrigerant due to the corrosion is prevented. is there.

[0007]

However, in the conventional heat exchanger 100 integrated with a liquid receiver, the liquid receiver main body 10 is not provided.
2. The female screw member 104 and the male screw cap 105 are formed of an aluminum alloy-based metal. In particular, on the outer periphery of the male screw cap 105, two annular grooves 106,
There is a problem that the manufacturing cost is high because the 107 and the male screw portion 108 are provided and need to be formed by cutting or the like.

Further, when the male screw cap 105 is screwed into the female screw member 104 when it is screwed in an inclined state, there is a possibility that the female screw portion is torsioned (defective caulking),
Defective products are likely to occur. In addition, the operation of screwing the male screw cap 105 into the female screw member 104 needs to be carefully performed. Further, since the male screw cap 105 and the filter 101 are provided separately, the number of parts and assembly There is a problem that the number of steps is increased.

Further, since the female screw member 104 and the male screw cap 105 are formed of an aluminum alloy-based metal, the sealing performance between the female screw member 104 and the male screw cap 105 is insufficient as described above. Therefore, it is necessary to adopt a structure using two O-rings 111 and 112, which causes a problem that the manufacturing cost becomes high.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat exchanger integrated with a liquid receiver, which can reduce the manufacturing cost. Another object of the present invention is to provide a heat exchanger integrated with a liquid receiver, which can suppress generation of defective products due to caulking failure. Another object of the present invention is to provide a heat exchanger integrated with a liquid receiver, which can reduce the number of parts and the number of assembling steps.

[0011]

According to the first aspect of the present invention, the opening end of the cylindrical liquid receiver main body integrally assembled with the heat exchanger main body is made of a resin made of resin integrally molded with a filter. The number of parts and the number of assembling steps are reduced as compared with the conventional technology in which a filter and a cap are separated, thereby reducing the manufacturing cost of a heat exchanger integrated with a receiver. Can be.

According to the second aspect of the present invention, the cap made of resin is temporarily screwed into the inside of the metal cylindrical female screw member fitted into the opening end side of the liquid receiver main body. Even if it is screwed into the female screw member in a tilted state,
The female screw portion of the female screw member is not twisted, and defective products due to bad caulking hardly occur. Since the annular groove and the male screw portion can be formed on the outer periphery of the cap by integral molding with resin, the manufacturing cost of the cap can be reduced.

According to the third aspect of the present invention, the resin cap is screwed into the metallic cylindrical female screw member, so that the female abutment is provided on the annular contact portion provided at one end of the cap. One end of the screw member comes into contact so as to bite. Thereby, the inside and the outside can be made airtight with one end of the female screw member and the contact portion, so that the seal member mounted inside the contact portion blocks the contact with the outside air, and the outside air of the seal member is blocked. Corrosion due to contact with water, and refrigerant leakage due to corrosion can be prevented.

According to the fourth aspect of the present invention, the dryer is constituted by a large number of particulate desiccants contained in a ventilated cloth bag, so that when the dryer needs to be replaced, the cap is received. By removing the cloth bag from the inside of the receiver body with a tool or the like after removing the container from the opening end of the container body or the female screw member, the removal operation of the dryer can be easily completed.

According to the fifth aspect of the present invention, the filter and the cap are separated from each other by closing the opening end of the cylindrical liquid receiver main body with a resin cap integrally formed with the filter. Compared with the conventional technique, the number of parts and the number of assembling steps are reduced, and the manufacturing cost of the liquid receiver can be reduced.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Structure of Embodiment] FIGS. 1 to 4 show an embodiment of the present invention.
FIG. 3 is a diagram showing a main configuration of a heat exchanger integrated with a liquid receiver.
FIG. 2 is a view showing an entire configuration of a heat exchanger integrated with a liquid receiver.

The heat exchanger integrated with a receiver according to the present embodiment is a component of a refrigeration cycle of a vehicle air conditioner, and exchanges heat between a refrigerant flowing from a refrigerant compressor (not shown) and air. This is a receiver-consolidated refrigerant condenser that sends only liquid refrigerant to a pressure reducing device (not shown) such as an expansion valve after condensing and liquefying the refrigerant. The heat exchanger integrated with a liquid receiver is installed together with a radiator and a cooling fan in a place where the traveling wind of the vehicle is easily received in an engine room of a vehicle such as a vehicle.

The heat exchanger integrated with the liquid receiver is a heat exchanger body (condenser body) 1 for exchanging heat between refrigerant and air.
And a cylindrical liquid receiver main body 2 integrally assembled along the width direction of the heat exchanger main body 1, and a cylindrical female fitted into one open end of the liquid receiver main body 2. It has a screw member 3 and a male screw cap 4 screwed into the female screw member 3. The heat exchanger integrated with the receiver is manufactured by integral brazing using vacuum or brazing using a non-corrosive flux, and then the filter 5 and the dryer 6 integrally molded with the male screw cap 4 are assembled. You.

The heat exchanger body 1 is connected to a plurality of tubes 7 for exchanging heat between refrigerant and air, side plates 10 joined to both ends of these tubes 7, and one end of the plurality of tubes 7. It comprises a first header 11, a second header 12 connected to the other ends of the plurality of tubes 7, and the like.

The plurality of tubes 7 are refrigerant pipes extending in the width direction of the heat exchanger main body 1 and having a flat cross section and an oblong shape. In addition, a corrugated fin 9 for improving the heat radiation efficiency of the refrigerant is provided between two adjacent tubes 7. That is, the heat exchanger body 1 is configured by alternately stacking a plurality of tubes 7 and corrugated fins 9.

Here, a part of the plurality of tubes 7 serves as a condensing tube (condensing part) for allowing the refrigerant to flow from the first header 11 to the second header 12 to condense and liquefy the refrigerant. The remaining tube 7 is the second header 1
The refrigerant flows from 2 to the first header 11 and functions as a subcooling tube (supercooling unit) for supercooling the refrigerant. In addition,
In the present embodiment, the number of tubes for condensation is larger than the number of tubes for supercooling. According to experiments, the number of tubes for supercooling is 10% to 10% of the number of tubes of the entire heat exchanger body 1. About 30% is desirable.

The first header 11 is formed into a predetermined shape by press-forming a metal such as an aluminum alloy. The first header 11 has a header plate 13 having a substantially U-shaped cross section into which one ends of a plurality of tubes 7 are inserted, and a tank plate 14 having a semicircular cross section connected to the opening side of the header plate 13. And two aluminum caps 15 for closing the opening ends on both sides in the width direction.

The first header 11 formed in the first header 11
The inner space of is a substantially annular plate-shaped separator (compartment plate) 1
6, the inlet-side communication chamber 18 communicating with the inlet of the refrigerant compressor via the inlet pipe 17 and the outlet-side communication chamber 2 communicating with the inlet of a decompression device such as an expansion valve via the outlet pipe 19.
It is divided into 0 and 0.

The second header 12 is formed into a predetermined shape by press-forming a metal such as an aluminum alloy. The second header 12 has a header plate 21 having a substantially U-shaped cross section into which the other ends of the plurality of tubes 7 are inserted, and a tank plate having a semicircular cross section connected to the opening side of the header plate 21. 22, two aluminum caps 23 for closing the opening ends on both sides in the width direction.

The second header 12 formed in the second header 12
The inner space of is a substantially annular plate-shaped separator (compartment plate) 2
4, the first communication chamber 26 communicating with the internal space of the liquid receiver main body 2 through a circular first through hole 25 (not shown) and the liquid receiver main body 2 through a second circular through hole 27. It is partitioned into a second communication chamber 28 communicating with the internal space.

The liquid receiver main body 2 is formed into a substantially cylindrical shape by press-forming a metal such as an aluminum alloy. The liquid receiver main body 2 separates the refrigerant flowing from the circular first communication hole 31 communicating with the first through hole 25 of the second header 12 into gas and liquid and separates the refrigerant into the second through hole 27 of the second header 12.
Is a gas-liquid separation unit that allows only the liquid refrigerant to flow out from the circular second communication hole 32 that communicates with.

The first communication hole 31 is opened by a convex first step portion 33 provided so as to rise from the side surface of the upper end of the second header 12 of the liquid receiver main body 2. Further, as shown in FIGS. 4A and 4B, the second communication hole 32 has a convex shape provided so as to rise from the side surface of the lower end portion of the second header 12 of the liquid receiver main body 2. Two step portion 34
It is open at.

A filter 5 for removing foreign substances in the refrigerant and a dryer 6 for absorbing moisture in the refrigerant are inserted into the internal space (gas-liquid separation chamber) 35 of the liquid receiver main body 2. . Among them, the dryer 6 is composed of a large number of particulate desiccants 62 placed in a permeable cloth bag 61. A male screw cap (resin cap) 4 made of resin integrally formed with a filter 5 is screwed into an opening (open end) on one end side of the liquid receiver main body 2. Also,
An aluminum cap 36 made of a metal such as an aluminum alloy is joined to an opening (opening end) on the other end side of the liquid receiver main body 2 using joining means such as brazing.

The female screw member 3 is formed into a substantially cylindrical shape by press-forming a metal such as an aluminum alloy. The female screw member 3 is fitted into the inner periphery of the opening end of the receiver main body 2 and is joined to the inner periphery of the opening end of the receiver main body 2 by using joining means such as brazing. The female screw member 3 functions as a cap holder for holding the male screw cap 4 integrally formed with the filter 5.

The female screw member 3 includes the second header 1
2 and the second communication hole 3 of the receiver body 2
A circular communication hole 37 communicating with the second communication hole 2 is formed. A female screw portion 38 with which the male screw cap 4 is screwed is formed on the inner periphery of the female screw member 3 on the opening end side by cutting or the like. The open end of the female screw member 3 has a pointed (inclined) annular seal portion 39 and the open end of the liquid receiver main body 2 so as to enter the liquid receiver main body 2 from that position. An annular locking portion 40 is provided which is locked to the open end of the liquid receiver main body 2 so as to restrict the pressure.

The male screw cap 4 is shown in FIGS.
As shown in (a), for example, a thermoplastic resin such as 6 nylon resin is molded into a predetermined shape by resin molding. The male screw cap 4 is screwed into the female screw member 3 to close the open end of the liquid receiver main body 2, and is integrally formed when the resin cap main body 41 is formed by resin. And a filter (resin filter main body) 5.

On the outer periphery of the resin cap body 41, a male screw portion 42 screwed to the female screw portion 38 provided on the inner periphery of the female screw member 3 and the inner periphery of the female screw member 3 are mounted. 1
An annular O-ring groove (corresponding to the annular groove of the present invention) 44 for fitting the O-rings (corresponding to the seal member of the present invention) 43 is formed.

One end of the resin cap body 41 has a one-character engagement groove (not shown) with which a tool such as a flathead screwdriver is engaged, and a filter 5 for preventing resin molding defects. A concave groove 45 having the same thickness is formed. An annular contact portion 46 is formed integrally with the outer periphery of the opening end of the resin cap body 41.

The contact portion 46 is so formed as to hermetically contact the seal portion 39 provided at the open end of the female screw member 3.
It has a shape (flange shape) that protrudes radially from the outer periphery of the open end of the resin cap main body 41, and has a tapered inclined surface such that the thickness becomes thinner toward the radial direction. I have.

As shown in FIGS. 1 and 4A, the filter 5 is formed integrally with the male screw cap 4.
A shaft portion 51 protruding in the axial direction from the center of the end surface of the resin cap body 41, a polygonal side wall portion 52 protruding in the axial direction from the outer peripheral side of the end surface of the resin cap body 41, and foreign matter in the refrigerant are removed. And a plurality of frame members 54 formed by insert-molding a resin net 53 therefor.

A flange 57 is provided on the outer periphery of the upper end of the plurality of side walls 52 in contact with the inner periphery of the upper end of the female screw member 3 in the figure. The shaft portion 51 and the plurality of side wall portions 52 are integrally formed with the resin cap main body 41 of the male screw cap 4 at the time of the primary molding for forming the male screw cap 4. Further, the plurality of frames 54 are integrally formed with the resin cap body 41 of the male screw cap 4 at the time of secondary molding for insert molding the net 53.

The plurality of frames 54 are formed, for example, in a substantially square shape, and are integrally mounted on rectangular windows provided on the plurality of side walls 52, respectively. The ends of the plurality of side walls 52 serve as inlets 55 through which the refrigerant flows,
The windows of the plurality of side walls 52 are provided with outlets 56 through which the refrigerant flows out.
It has been.

Next, a method of attaching and detaching the filter 5 and the dryer 6 according to this embodiment will be briefly described with reference to FIGS.

For example, when the refrigerant compressor breaks down due to seizure or the like, foreign matter such as a metal piece enters the refrigeration cycle and accumulates near the filter 5 and the dryer 6 in the receiver main body 2. In such a case, before replacing the refrigerant compressor and operating the refrigeration cycle again, the filter
And the dryer 6 need to be replaced with a new one.

When replacing the filter 5 or the dryer 6, use a tool such as a flathead screwdriver with a male screw cap 4.
The female screw member 3 assembled to the opening end of the liquid receiver main body 2 by engaging with a one-character-shaped engaging groove formed on the end face of the resin cap main body 41 and rotating the same in the left rotation direction, for example. Remove the male screw cap 4.

Next, the filter 6 and the dryer 6 integrally formed with the male screw cap 4 are picked up from the inside of the receiver body 2 by using a tool such as tweezers to drier 6 in the receiver body 2. Can be removed from the receiver main body 2. Then, after inserting a new dryer 6 into a predetermined position in the liquid receiver main body 2 using a tool, a female screw cap 4 with a new filter 5 is attached to the open end of the liquid receiver main body 2. By screwing the screw member 3 into the screw member 3 using a tool, the replacement work of the filter 5 and the dryer 6 is completed.

[Operation of Embodiment] Next, the operation of the heat exchanger integrated with a liquid receiver of this embodiment will be briefly described with reference to FIGS.

The high-temperature, high-pressure gas refrigerant compressed and discharged in the refrigerant compressor flows into the inlet-side communication chamber 18 of the first header 11 through the inlet pipe 17. The gas refrigerant flowing into the inlet-side communication chamber 18 is
It is distributed to a plurality of tubes 7 which serve as condensation tubes inside.

The gas refrigerant distributed to the plurality of tubes 7 exchanges heat with outdoor air (outside air) via the corrugated fins 9 when passing through the plurality of tubes 7 to be condensed and liquefied. Most of the liquid refrigerant is left except for the refrigerant. The refrigerant in the gas-liquid two-phase state flows from the plurality of tubes 7 into the first communication chamber 26 of the second header 12.

The gas-liquid two-phase refrigerant flowing into the first communication chamber 26 is once collected, and then flows into the receiver main body 2 through the first through hole 25 and the first communication hole 31. Then, gas-liquid separation is performed in the receiver main body 2. In the receiver main body 2, moisture in the refrigerant is absorbed by the dryer 6.

Then, only the liquid refrigerant in the receiver main body 2 is
A plurality of nets attached to the windows (outflow ports 56) of the side walls 52 from the inflow port 55 into the internal space surrounded by the plurality of side walls 52 of the filter 5 integrally formed with the male screw cap 4. The foreign matter is removed by the plurality of nets 53 when passing through 53.

The liquid refrigerant from which the foreign matter has been removed passes through the communication hole 37 of the female screw member 3, the second communication hole 32 and the second through hole 27 of the receiver main body 2, and the second communication chamber of the second header 12. 2
8 flows into. The liquid refrigerant flowing into the second communication chamber 28 is distributed to the plurality of tubes 7 serving as subcooling tubes in the second communication chamber 28.

The liquid refrigerant distributed to the plurality of tubes 7 exchanges heat with the outside air via the corrugated fins 9 when passing through the plurality of tubes 7 and is supercooled, and has a degree of subcooling (subcooling). It becomes a liquid refrigerant and flows into the outlet side communication chamber 20 of the first header 11. The exit side communication room 20
The liquid refrigerant that has flowed into the chamber passes through an outlet pipe 19 to a pressure reducing device such as an expansion valve.

[Effects of the Embodiment] As described above, the heat exchanger integrated with the receiver according to the present embodiment has the filter 5 inside the female screw member 3 fitted on the open end side of the receiver main body 2. The open end of the liquid receiver main body 2 is closed by screwing the male screw cap 4 integrally molded with. Thereby, the filter 5
Since the number of parts and the number of assembling steps are reduced as compared with the conventional technique in which the heat sink and the male screw cap 4 are separately provided, the manufacturing cost of the heat exchanger integrated with the receiver can be reduced.

Also, by screwing a resin male screw cap 4 into a metal female screw member 3 fitted on the open end side of the liquid receiver main body 2, the open end of the liquid receiver main body 2 is closed. It is closed. As a result, even if the male screw cap 4 is screwed into the female screw member 3 in a tilted state, the female screw portion of the female screw member 3 will not be twisted, and defective products due to caulking failure will occur. Can be prevented. Further, since the external thread portion 42 and the O-ring groove 44 can be formed on the outer periphery of the external thread cap 4 by integral molding with resin, the manufacturing cost of the external thread cap 4 is lower than that of the conventional technique that required cutting or the like. Can be reduced.

Further, by screwing a male screw cap 4 made of resin into the female screw member 3 made of metal, an annular contact provided on the outer periphery of the open end of the resin cap body 41 of the male screw cap 4 is formed. The seal portion 39 provided at the open end of the female screw member 3 comes into contact with the portion 46 so as to bite. Thereby,
The inside (coolant side) and the outside (outside air side) can be hermetically sealed by the seal portion 39 of the female screw member 3 and the contact portion 46 of the male screw cap 4.

Therefore, the O-ring 43 mounted on the inner side of the abutting portion 46 is cut off from contacting with the outside air, and the O-ring 43 is in contact with the outside air (especially corrosive fluid such as rainwater or water). Corrosion due to contact can be prevented, and refrigerant leakage due to corrosion can be reliably prevented.

Accordingly, only one O-ring 43 is required, and only one O-ring groove 44 needs to be provided on the outer periphery of the male screw cap 4. As a result, the number of components and the number of assembling steps can be reduced as compared with the conventional technique, and the male screw cap 4 can be formed at low cost, so that the manufacturing cost of the heat exchanger integrated with the receiver can be reduced.

Further, by constituting the dryer 6 with a large number of particulate desiccants 62 placed in a ventilated cloth bag 61,
When it is necessary to replace the dryer 6, after removing the male screw cap 4 from the female screw member 3 fitted to the opening end side of the receiver main body 2, the cloth bag 61 is removed from the receiver main body 2 with a tool or the like. The removal operation of the dryer 6 can be easily completed by picking out.

[Other Embodiments] In the present embodiment, the present invention is incorporated in a refrigeration cycle of an air conditioner for a vehicle such as an automobile. However, the present invention may be incorporated in a refrigeration cycle of an air conditioner for a railway vehicle, a ship, and an aircraft. Also, it may be incorporated in a refrigeration cycle of a stationary air conditioner such as a house or a factory.
In particular, it is desirable to apply the present invention to those in which the refrigerant circulation amount in the refrigeration cycle fluctuates.

In the present embodiment, a female screw member 3 constituting a cap holder is fitted into the inner circumference of the opening end side of the liquid receiver main body 2, and the male screw cap 4 is fitted on the inner circumference of the female screw member 3.
However, a female screw portion is formed on the inner periphery of the opening end side of the receiver body 2, and the male screw cap 4 is screwed directly into the inner periphery of the opening end side of the receiver body 2. You may do it. In this case, the number of parts and the number of assembling steps can be further reduced, and the manufacturing cost can be further reduced.

In this embodiment, an example in which the present invention is applied to a heat exchanger integrated with a liquid receiver has been described. However, the present invention may be applied to a liquid receiver that is not integrated with the heat exchanger. good. Further, in the present embodiment, an example is described in which the present invention is applied to a heat exchanger integrated with a heat exchanger provided with a heat exchanger body 1 for exchanging heat between a refrigerant and air. The present invention may be applied to a heat exchanger integrated with a liquid receiver having a heat exchanger body for exchanging heat with a liquid.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a main structure of a heat exchanger integrated with a liquid receiver according to the present invention (embodiment).

FIG. 2 is a front view showing a main configuration of a heat exchanger integrated with a liquid receiver according to the present invention (embodiment).

FIG. 3 is a front view showing an overall configuration of a heat exchanger integrated with a liquid receiver according to the present invention (embodiment).

FIG. 4A is a cross-sectional view showing an assembled state of a male screw cap, and FIG. 4B is a plan view showing a second step portion in which a second through hole of the receiver main body is formed. (Embodiment).

FIG. 5 is a cross-sectional view illustrating a main configuration of a conventional heat exchanger integrated with a liquid receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger main body 2 Liquid receiver main body 3 Female screw member 4 Male screw cap 5 Filter 6 Dryer 7 Tube 9 Corrugated fin 11 First header 12 Second header 25 First through hole 27 Second through hole 31 First communication hole 32 Second communication hole 38 Female screw part 39 Seal part 42 Male screw part 43 O-ring (seal member) 44 O-ring groove (annular groove) 46 Contact part 61 Cloth bag 62 Particulate desiccant

Claims (5)

[Claims] (A) a heat exchanger main body for condensing and liquefying a refrigerant; (b) a cylindrical liquid receiver main body integrally assembled to the heat exchanger main body and having one end opened; A) A heat exchanger integrated with a liquid receiver, which is integrally formed with a filter for removing foreign matter in the refrigerant and includes a resin cap for closing an open end of the liquid receiver body. 2. The heat exchanger integrated with a liquid receiver according to claim 1, wherein a metal cylindrical female screw member into which the cap is screwed is provided at an opening end side of the liquid receiver main body. Is fitted on the outer periphery of the cap, a male screw portion screwed into a female screw portion provided on the inner periphery of the female screw member, and a seal member mounted between the inner periphery of the female screw member. A heat exchanger integrated with a liquid receiver, wherein an annular groove is provided for fitting the heat exchanger. 3. The heat exchanger integrated with a liquid receiver according to claim 2, wherein one end of said cap is annularly abutted in a radial direction so as to abut on one end of said female screw member. A heat exchanger integrated with a liquid receiver, wherein the part is integrally formed. 4. The heat exchanger integrated with a receiver according to claim 1, wherein a dryer for absorbing moisture in the refrigerant is provided inside the receiver body. The heat exchanger integrated with a liquid receiver, wherein the dryer is provided with a large number of particulate desiccants placed in a permeable cloth bag. 5. A liquid receiving device main body having an opening at one end, and a filter for removing foreign matter in a refrigerant are integrally formed, and an opening end of the liquid receiving device main body is closed. Receiver with a resin cap for use.