JP2003240386A - Heat-exchanger with receiver tank, coupling member for receiver tank, fitting structure for heat-exchanger to receiver tank, and refrigerating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a size, to reduce the number of part items, to enhance easiness in fitting, and to reduce a cost. <P>SOLUTION: There are provided a heat-exchanger main body 10, a receiver tank 3 and a block flange 4, in the present invention. The flange 4 has a main body 41, an embedded part 42 attached to one side header 11 under an embedded condition, a flow-in passage 4a of which the flow-in side end part is arranged in an upper end of the embedded part 42 to be communicated with a condensing part 2 of the heat-exchanger main body 10, and a flow-out part 4b of which the flow-out side end part is arranged in a side face of the embedded part 42 to be communicated with a super-cooling part 3. A flange-like partitioning piece 50 is integrally formed in an outer circumference of an upper end of the embedded part in the flange 4, and an outer circumferential end edge of the partitioning piece 50 is engaged with an inner circumferential face of the one side header to make the partitioning piece 50 constituted as a partitioning member for partitioning an inside of the header. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensing system device such as a heat exchanger with a receiver tank, a receiver tank connecting member, a receiver tank assembly structure of a heat exchanger, which is preferably used for a vehicle air-conditioning refrigeration system. Class and refrigeration system.

[0002]

2. Description of the Related Art In recent years, in the process of condensing a refrigerant in a refrigeration cycle of an air conditioner for a vehicle or the like, the condensed refrigerant is supercooled to a temperature several degrees lower to increase the amount of heat radiation and then decompressed. A technique has been proposed that attempts to improve the refrigerating capacity by introducing a means and an evaporator.

In this proposed technique, development of a heat exchanger with a receiver tank (subcool system condenser) in which a receiver tank is assembled to a heat exchanger having a condensing portion and a supercooling portion as one body is under way.

As shown in FIG. 8, this heat exchanger with a receiver tank has a pair of headers (101) (101).
The heat exchanger main body (100) is formed by arranging in parallel a number of heat exchange tubes whose both ends are connected for communication.
Furthermore, a partition member (10) provided in the header (101)
According to 2), the heat exchange tube has multiple paths (P1) to
(P5) and the paths (P1) to (P1)
The condensing part (110) is constituted by 3), and the pass (P4)
By (P5), a supercooling unit (120) independent of the condensing unit (110) is formed.

The condenser (11) in the header (101)
0) is provided with a condenser inlet (111) and a condenser outlet (112) at upper and lower positions, and a supercooling portion inlet (111) is provided at a vertical position of the supercooling portion (120) in one header (101). 121) and the supercooling section outlet (12
2) has been formed.

The receiver tank (130) provided on the other side of the header (101) has its receiver tank inlet (131) communicated with the condenser outlet (111) and the receiver tank outlet (132) undercooled. It is connected to the section entrance (121).

In this heat exchanger with a receiver tank, the gas refrigerant flowing from the condenser inlet (111) into the condenser (110) is passed through each path (P1) of the condenser (110).
Through (P3) in order, heat is exchanged with the outside air and condensed. Furthermore, the condensed refrigerant is condensed at the outlet (1
12) and the receiver tank inlet (131) to be guided into the receiver tank (130), where it is temporarily stored, and only the liquid refrigerant passes through the receiver tank outlet (132) and the supercooling unit inlet (121). It is led to the cooling unit (120). Further, the liquid refrigerant that has flowed into the supercooling unit (120) is supercooled by the outside air while flowing through the fourth and fifth paths (P4) and (P5), and then the supercooling unit outlet (12).
It will be drained from 2).

In such a heat exchanger integrated with a receiver tank, for example, as shown in FIG. 9, the receiver tank (130) has a coupling member such as a block flange (140) in the heat exchanger body (100). It is common that they are connected via. That is, the flange (140) of the heat exchanger includes the first block (151) joined to the periphery of the condenser outlet (112) of the header (101) of the heat exchanger body (100) and the supercooling unit inlet. (13
1) It integrally has a second block (152) joined to the periphery. The first block (151) has an inflow path (141) having one end (outflow side end) opened on the upper surface of the flange and the other end (inflow side end) communicating with and connected to the condenser outlet (112). While being formed, the second block (15
In 2), one end (inflow side end) is opened to the upper surface of the flange, and the other end (outflow side end) is at the supercooling section inlet (121).
An outflow path (142) is formed that is connected to and communicates with.

On the other hand, in the receiver tank (130), the lower end closing member (136) has the receiver tank inlet (131) and the receiver tank outlet (1) communicating with the inside of the tank.
32) has been formed.

The receiver tank entrance / exit (131)
(132) is communicatively connected to the ends of the inflow path (141) and the outflow path (142) of the block flange (140) via joint pipes (145) (145), and in that state, the receiver tank (140). ) Is attached to the upper surface of the block flange (140).

[0011]

In a refrigeration system such as a car air conditioner to which such a heat exchanger with a receiver tank is applied, it is required to reduce the size and weight in order to effectively use the limited space of the vehicle body. ing.

However, the receiver tank (130)
When trying to miniaturize the
The stable region of the refrigerant, that is, the stable region in the supercooled state of the refrigerant with respect to the amount of the refrigerant enclosed becomes narrow, and an excessive amount of the enclosed refrigerant or an insufficient amount of the enclosed refrigerant easily occurs, which makes it difficult to obtain stable refrigeration performance. Occur.

Further, if the heat exchanger main body (100) is attempted to be downsized, the area for the refrigerant condensing core becomes small and it becomes difficult to supply a stable liquid refrigerant, so that good refrigerating performance cannot be obtained. The problem occurs.

On the other hand, in the condensation equipment such as the heat exchanger with the receiver tank and the refrigeration system, in addition to the above-mentioned miniaturization, the number of parts is reduced, the assembling workability is improved, and further the cost is reduced. It is the current situation that such requirements are required as much as possible.

The present invention solves the above-mentioned problems of the prior art and achieves stable refrigeration performance while achieving miniaturization, reducing the number of parts and costs, and further improving workability in assembly. It is an object of the present invention to provide a condensing system device such as a heat exchanger with a receiver tank and a refrigeration system capable of achieving the above.

[0016]

In order to achieve the above object, a heat exchanger with a receiver tank according to the first aspect of the present invention is provided with a plurality of heat exchange tubes arranged in parallel between a pair of headers. And a receiver tank inlet and an outlet are provided at the lower end of the heat exchanger main body, which is configured to condense the refrigerant by the condensing section configured by the heat exchange tube, and stores the refrigerant flowing from the receiver tank inlet. Then, a receiver tank that allows only the liquid refrigerant to flow out from the receiver tank outlet, and a coupling member for coupling the receiver tank to the one header are provided, and the coupling member is the lower end of the receiver tank. A connecting member main body to which is assembled, and an embedded portion provided on a side portion of the main body and embedded in the one header, An end portion is disposed on an upper end surface of the buried portion and communicates with the condenser portion, and an outflow side end portion is disposed on an upper end surface of the coupling member body and has an inflow passage communicating with the receiver tank inlet. The outer peripheral edge of the flange-shaped segment is joined to the inner peripheral surface of the one header, and the outer periphery of the flange-shaped segment is integrally formed on the outer periphery of the upper end of the embedded portion of the coupling member. The inside of the one header is partitioned by the flange-shaped partition, and the refrigerant condensed by the condenser is introduced from the inflow side end of the inflow path of the coupling member and passes through the inflow path. The gist of the invention is that it is configured to be introduced into the receiver tank.

In the heat exchanger with receiver tank according to the first aspect of the present invention, since the embedded portion of the receiver tank connecting member is embedded in one header,
The installation space of the buried part can be omitted. Further, a flange-shaped partition is integrally provided around the inlet of the inflow path on the upper end surface of the buried portion, and one header is partitioned by the partition, so a partition member for partitioning the inside of the header is It is not necessary to assemble separately, and the number of parts can be reduced accordingly.

Further, since a part of the coupling member is embedded in the one header, the receiver tank assembled to the coupling member can be brought as close as possible to the one header.

In the first aspect of the present invention, it is preferable that the inflow passage of the coupling member is formed such that the inflow side half portion is formed as a refrigerant descending flow passage for lowering the refrigerant downward.

That is, when this structure is adopted, the position where the receiver tank is assembled can be arranged downward as a whole, and as a result, a long receiver tank can be used, and the tank capacity can be reduced. It can be secured sufficiently large.

Further, in the first aspect of the present invention, it is preferable to adopt a structure in which the refrigerant descending passage is arranged so that the passage direction thereof is inclined with respect to the axis of the one header.

That is, in the case of adopting this structure, the upper end opening area of the descending passage can be made larger than that in which the descending passage is arranged parallel to the axis of the header, so that the introduction of the refrigerant can be improved. Can be performed efficiently and smoothly, and the pressure loss of the refrigerant can be reduced.

The second aspect of the present invention is directed to a so-called subcool system condenser having a supercooling portion in the heat exchanger body.

That is, according to the second aspect of the present invention, a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by partition members in the same direction, A heat exchanger body divided into an upper condensation section and a lower supercooling section, a receiver tank inlet and an outlet are provided at the lower end, and the refrigerant introduced from the receiver tank inlet is stored to store only the liquid refrigerant. A receiver tank that is made to flow out from the receiver tank outlet, and a connecting member that connects the receiver tank to the one header, the connecting member being a connecting member main body to which the lower end of the receiver tank is assembled, and A buried part provided on a side part of the main body and arranged in a buried state in the one header, and an inflow side end part is arranged on an upper end surface of the buried part. An inflow path communicating with the condensing part and having an outflow side end portion arranged on the upper end surface of the coupling member body and communicating with the receiver tank inlet; and an inflow side end portion arranged on the upper end surface of the coupling member body. An outlet passage communicating with the receiver tank outlet and having an outflow side end portion arranged on the lower outer surface of the embedded portion and communicating with the supercooling portion, and on the outer periphery of the upper end of the embedded portion in the coupling member, A flange-shaped partition that projects outward is integrally formed, and the flange-shaped partition is configured as the partition member in the one header, and the refrigerant condensed by the condenser is in the coupling member. The refrigerant in the receiver tank is introduced from the inflow side end portion of the inflow path and introduced into the receiver tank through the inflow path, while the refrigerant in the receiver tank passes through the outflow path of the coupling member. Those from the outlet end made is configured to be introduced into the supercooling section has a gist.

Also in this second invention, similar to the above,
It is possible to reduce the size and size.

Further, in the second aspect of the present invention, in order to secure a large tank capacity, it is preferable to adopt a structure in which the mounting position of the receiver tank can be lowered as follows.

That is, in the second aspect of the invention, it is preferable to adopt a structure in which the inflow passage of the coupling member is arranged such that the outflow side end thereof is located lower than the inflow side end.

Further, in the second aspect of the present invention, it is more preferable to adopt a structure in which the outflow side end of the inflow path of the coupling member is arranged at a height position corresponding to the supercooling section.

It is even more preferable to employ a structure in which the inflow path of the coupling member is formed so that the inflow side half part thereof is formed as a refrigerant descending flow path for descending the refrigerant downward.

Further, in the second aspect of the present invention, in order to make the upper opening area of the descending passage in the inflow passage of the coupling member large, it is preferable to adopt the following construction.

That is, in the second aspect of the present invention, it is preferable to adopt a configuration in which the refrigerant descending passage is arranged so that the passage direction thereof is inclined with respect to the axis of the one header.

The third aspect of the present invention specifies a receiver tank connecting member applicable to the first aspect of the present invention.

That is, according to the third aspect of the present invention, a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and a heat exchanger main body in which a condensing section is formed by the heat exchange tubes. In a receiver tank coupling member for coupling a receiver tank for liquid refrigerant storage, a coupling member body to which a lower end of the receiver tank is assembled, and a header provided on a side portion of the coupling member body, and one header A buried part disposed in a buried state, an inflow side end part is arranged on an upper end face of the buried part, and an outflow side end part is arranged on an upper end face of the coupling member main body, and the condensing part is connected to the receiver. An inflow path for communicating with the receiver tank inlet at the lower end of the tank and an outer periphery of the upper end of the buried portion are integrally formed so as to project outward, and an outer peripheral edge is an inner periphery of the one header. Are joined, it is summarized as those comprising a flange-like partition piece for dividing an inside of the one header.

The receiver tank connecting member according to the third aspect of the present invention, when applied to a heat exchanger with a receiver tank, has the same effect as that of the first aspect of the present invention.

In the third aspect of the present invention, it is preferable to adopt the following configuration, as in the first aspect of the present invention.

That is, in the third aspect of the present invention, it is preferable to adopt a structure in which the inflow side half portion is formed as a refrigerant descending flow path for lowering the refrigerant downward.

Further, in the third aspect of the present invention, the refrigerant descending passage is arranged such that the passage direction is inclined with respect to the axis of the one header.
Even more preferable.

The fourth aspect of the present invention specifies a receiver tank connecting member applicable to the second aspect of the present invention.

That is, according to the fourth aspect of the present invention, a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by partition members in the same direction, A heat exchanger body, which is divided into an upper condensing portion and a lower supercooling portion, is a receiver tank connecting member for connecting a receiver tank for liquid refrigerant storage, and the lower end of the receiver tank is assembled. A coupling member body and a side portion of the coupling member body,
And an embedded portion that is embedded in one of the headers,
An inflow side end portion is arranged on an upper end surface of the buried portion, and an outflow side end portion is arranged on an upper end surface of the coupling member body, for communicating the condensing portion with a receiver tank inlet at a lower end of the receiver tank. An inflow path and an inflow side end portion are arranged on an upper end surface of the coupling member body, and an outflow side end portion is arranged on a lower outer surface of the buried portion to supercool the receiver tank outlet at the lower end of the receiver tank. With an outflow passage for communicating with the portion, and a flange-shaped partition formed integrally on the outer periphery of the upper end of the embedded portion so as to project outward and configured as the partition member in the one header. Is the gist.

The receiver tank connecting member according to the fourth aspect of the present invention, when applied to a heat exchanger with a receiver tank, has the same effect as that of the second aspect of the present invention.

In the fourth aspect of the invention, it is desirable to adopt the following configuration, like the second aspect of the invention.

That is, in the fourth aspect of the present invention, it is preferable that the inflow passage has a structure in which the outflow side end is arranged lower than the inflow side end.

Further, in the fourth aspect of the present invention, it is more preferable to adopt a structure in which the inflow passage of the coupling member is formed as a refrigerant descending flow passage for allowing the inflow side half portion to descend the refrigerant downward.

Further, in the fourth aspect of the present invention, the refrigerant descending passage is arranged such that the passage direction is inclined with respect to the axis of the one header.
Even more desirable.

The fifth aspect of the present invention specifies the receiver tank assembly structure of the heat exchanger applicable to the first aspect of the present invention.

That is, in the fifth aspect of the present invention, a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and a heat exchanger main body in which a condensing section is formed by the heat exchange tubes. In the receiver tank assembling structure of the heat exchanger adapted to assemble a receiver tank for liquid refrigerant storage, a joining member main body and a joining member having an embedded portion provided on a side portion of the main body are provided. In the connecting member, an inflow side end portion is arranged on an upper end surface of the embedded portion, and an outflow side end portion is arranged on an upper end surface of the coupling member body, and an upper end outer periphery of the embedded portion, And a flange-shaped partition formed integrally so as to project outward,
The coupling member is attached in a state in which the embedded portion is embedded in one header, and the outer peripheral edge of the partition is the one so that the inside of the one header is partitioned by the flange-shaped partition. , The lower end of the receiver tank is assembled to the coupling member body, and the condensing portion is communicated with the receiver tank inlet at the lower end of the receiver tank by the inflow path. I am trying.

The receiver tank assembling structure of the heat exchanger of the fifth aspect of the present invention, when applied to the heat exchanger with the receiver tank, has the same effect as that of the first aspect of the invention.

The sixth aspect of the present invention specifies the receiver tank assembly structure of the heat exchanger applicable to the second aspect of the present invention.

That is, in the sixth aspect of the present invention, a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by a partition member in the same direction, A receiver tank assembly structure of a heat exchanger, wherein a receiver tank for storing a liquid refrigerant is assembled to a heat exchanger body divided into an upper condensation section and a lower supercooling section, and a coupling member body And a coupling member having an embedded portion provided on a side portion of the main body,
The coupling member has an inflow side end portion disposed on an upper end surface of the embedded portion and an outflow side end portion disposed on an upper end surface of the coupling member body, and an inflow side end portion of the coupling member body. Of the outflow passage, which is disposed on the upper end surface of the outflow side end portion on the lower surface of the embedded portion, and the outer periphery of the upper end of the embedded portion,
And a flange-shaped partition formed integrally so as to project outward, the coupling member is attached in a state in which the embedded portion is embedded in one header, and the flange-shaped partition of the one An outer peripheral edge of the partition is joined to an inner peripheral surface of the one header so that the partition member in the header is configured, and a lower end of the receiver tank is assembled to the coupling member main body to condense the condensation member. The gist is that the part is connected to the receiver tank inlet at the lower end of the receiver tank by the inflow path, and the receiver tank outlet at the lower end of the receiver tank is connected to the supercooling part by the outflow path.

The receiver tank assembly structure of the heat exchanger according to the sixth aspect of the invention has the same effects as the second aspect of the invention when applied to the heat exchanger with the receiver tank.

The seventh invention specifies a refrigeration system to which the heat exchanger with a receiver tank of the first invention is applied.

That is, in the seventh aspect of the invention, the refrigerant compressed by the compressor is condensed by the heat exchanger with the receiver tank, the condensed refrigerant is passed through the pressure reducer to reduce the pressure, and the reduced pressure refrigerant is evaporated by the evaporator. In the refrigeration system to be returned to the compressor, the heat exchanger with the receiver tank, between the pair of headers, a plurality of heat exchange tubes for connecting both ends to both headers are arranged in parallel,
A heat exchanger main body configured to condense the refrigerant by a condensing section configured by the heat exchange tube, a receiver tank inlet and an outlet are provided at the lower end, and the refrigerant introduced from the receiver tank inlet is stored to store the liquid. A receiver tank configured to allow only a refrigerant to flow out from the receiver tank outlet, and a connecting member for connecting the receiver tank to the one header, the connecting member being a combination with which the lower end of the receiver tank is assembled. The member main body, an embedded portion provided on a side portion of the main body and embedded in the one header, and an inflow side end portion is disposed on an upper end surface of the embedded portion and communicates with the condenser portion. And an inflow passage having an outflow side end portion arranged on the upper end surface of the coupling member body and communicating with the receiver tank inlet, and embedded in the coupling member. On the outer periphery of the upper end of the section, a flange-shaped segment protruding outward is integrally formed, and the outer peripheral edge of the flange-shaped segment is joined to the inner peripheral surface of the one header, The gist is that the inside of one of the headers is partitioned.

The refrigeration system of the seventh invention is the same as the first refrigeration system.
Since it is applied to the heat exchanger with a receiver tank of the invention, it has the same effects as the first invention.

The eighth invention specifies a refrigeration system to which the heat exchanger with a receiver tank of the second invention is applied.

That is, in the eighth aspect of the present invention, the refrigerant compressed by the compressor is condensed by the heat exchanger with the receiver tank, the condensed refrigerant is passed through the decompressor to be decompressed, and the decompressed refrigerant is evaporated by the evaporator. In the refrigeration system to be returned to the compressor, the heat exchanger with the receiver tank, between the pair of headers, a plurality of heat exchange tubes for connecting both ends to both headers are arranged in parallel,
The inside of both headers are partitioned by a partition member in the same direction, and a heat exchanger main body is divided into an upper condensation section and a lower supercooling section, and a receiver tank inlet and outlet are provided at the lower end. The receiver tank which stores the refrigerant introduced from the inlet and allows only the liquid refrigerant to flow out from the receiver tank outlet, and a coupling member for coupling the receiver tank to the one header, and the coupling The member is a coupling member main body to which the lower end of the receiver tank is assembled, an embedded portion provided on a side portion of the main body and embedded in the one header, and an inflow side end portion of the embedded portion. An inflow path that is disposed on the upper end surface and communicates with the condenser section, and an outflow side end portion that is disposed on the upper end surface of the coupling member body and that communicates with the receiver tank inlet; An end portion is disposed on the upper end surface of the coupling member body and communicates with the receiver tank outlet, and an outlet side end portion is disposed on a lower outer surface of the embedded portion and communicates with the supercooling portion. A flange-shaped partition that protrudes outward is integrally formed on the outer periphery of the upper end of the embedded portion of the coupling member, and the flange-shaped partition is configured as the partition member in the one header. Is the gist.

The refrigerating system according to the eighth aspect of the present invention is the same as the above second aspect.
Since the heat exchanger with a receiver tank of the invention is applied, the same operational effects as those of the second invention can be obtained.

[0057]

1 is a front view showing both sides of a heat exchanger with a receiver tank according to an embodiment of the present invention, and FIG. 2 is an enlarged front sectional view showing the periphery of a block flange of the heat exchanger. FIG. 3 is a front sectional view showing the block flange and its surroundings in an exploded manner.

As shown in these figures, this heat exchanger comprises a multi-flow type heat exchanger body (10), a receiver tank (3), and a receiver tank (3) which is a heat exchanger body (10). And a block flange (4) serving as a connecting member for connecting to.

The heat exchanger body (10) is provided with a pair of left and right vertically facing headers (11) facing each other. Between the pair of headers (11), a large number of flat tubes (12) along the horizontal direction as heat exchange tubes are vertically connected with both ends thereof connected to both headers (11). They are arranged in parallel at predetermined intervals. Further, corrugated fins (13) are arranged between the flat tubes (12) and outside the outermost flat tubes (12), and side plates are provided outside the outermost corrugated fins (13). (1
4) is provided.

A flange-shaped partition (50) of a block flange (4), which will be described in detail later, is provided at a predetermined height position of one header (11) in the heat exchanger body (10), and the other header is also provided. A partition plate (16) is provided at the same height as the partition (50) in (11). Then, by both of these partition pieces (50) and partition members such as partition plates (16), both headers (1
1) is partitioned by the same level, and the partition members (16) (5
0) as a boundary, the upper flat tube (12) is configured as the condensing section (1), and the lower flat tube (12) is independent from the condensing section (1) in the supercooling section (2). ) Is configured as.

In addition, the header (1
A partition plate (17) for refrigerant turn is provided at an appropriate height position inside 1). In the heat exchanger body (10) of the present embodiment, the condensing part (1) is the first. Or third
Are divided into three paths (P1) to (P3).

Furthermore, a condenser inlet (1a) is provided in the upper part of the other header (11) of the heat exchanger body (10) corresponding to the first pass (P1), and the lower part thereof is
A subcooling section outlet (2b) is provided corresponding to the subcooling section (2).

The receiver tank (3) has a tank main body (31) made of a vertically long tubular member whose upper end is closed and whose lower end is opened, and an inlet / outlet member (which is attached to the lower end opening of the tank main body (31) in a closed manner. 32) and.

On the lower surface side of the inlet / outlet member (32), an inlet convex step (35) is formed so as to project downward, and the convex step (35) of the tank main body (31) is formed. A receiver tank inlet (3a) communicating with the inside is formed.

Further, on the lower surface side of the entrance / exit member (32), an exit concave step portion (36) is formed so as to be depressed upward,
A receiver tank outlet (3b) communicating with the inside of the tank body (31) is formed in the recessed step portion (36).

In this receiver tank (3), the refrigerant introduced from the inlet (3a) into the tank body (31) is temporarily stored in the tank body (31), and only the liquid refrigerant is received in the receiver tank outlet (3b). ) Is configured to be drained from.

On the other hand, as shown in FIGS. 2 to 6, the block flange (4) includes a main body (41) and the main body (4).
The embedded portion (4) integrally provided on the side surface of 1) so as to project laterally.
2) and.

On the upper surface of the flange body (41), an inlet concave step (45) which can accommodate the inlet convex step (35) of the receiver tank (3) is formed, and at the same time, the receiver tank (35) is formed. An outlet convex step (46) which can be fitted to the outlet concave step (36) of 3) is formed.

Inside the block flange (4),
An inflow path (4a) for communicating between the condenser section (1) and the receiver tank (3) and an outflow path (4b) for communicating between the receiver tank (3) and the supercooling section (3) are provided. Has been.

One end (inflow side end) of the inflow path (4a) is opened to the upper end surface of the embedding part (42), and the other end (outflow side end) thereof is a recessed step for entrance (45). It is opened on the bottom of the inside.

The inflow path (4a) is constructed as a refrigerant descending flow path (40a) in which the inflow side half part descends obliquely downward and the outflow side half part is vertically elevating as a refrigerant ascending flow path. It is configured.

Further, the inflow path (4a) is arranged such that the inflow side end is located higher than the outflow side end.

The outflow passage (4b) has one end (inflow side end) opened to the upper end surface of the outlet convex step (46) and the other end (outflow side end) of the buried portion (42). It is opened on the outer surface of the side part.

On the outer periphery of the upper end of the embedded portion (42) of the block flange (4), an outward flange-shaped partition (50) is integrally formed so as to project outward. The flange-shaped segment (50) is formed so that the outer peripheral shape matches the inner peripheral shape of the one header (11).

As shown in FIGS. 2 and 8, the embedded portion (42) of the block flange (4) is provided between the condenser portion (1) and the supercooling portion (2) inside one of the headers (11). , Buried so that it can be fitted from the side,
The peripheral portion (41) of the flange body (41) on the embedded portion side
a) (41a) is bonded and fixed to the header (11) in an airtight state. Further, as shown in FIGS. 2 and 7, the outer peripheral edge of the flange-shaped partition (50) at the upper end of the embedded portion is joined and fixed to the inner peripheral surface of the header (11) in a circumferentially continuous state, and this flange The partition section (50) is configured as a partition member for partitioning between the condensing section (1) and the subcooling section (2) inside the one header (11) as described above.

Further, in this joined state, the inflow path (4
The inflow side end of a) is open-connected to the condensing section (1) and is configured as a condensing section outlet (1b), and the outflow side end of the outflow passage (4b) is connected to the supercooling section (2). The openings are communicated with each other to form a supercooling section inlet (2a).

Here, in this embodiment, the inflow path (4
The outflow side end of a) is arranged such that the height position thereof corresponds to the upper end of the supercooling section (2), and further the inflow path (4a).
Of the inflow side end of the inflow path (4a)
In other words, it is arranged at a lower position than the condenser outlet (1b).

As shown in FIGS. 2 and 3, the uneven steps (35) and (36) of the receiver tank (3) are fitted to the uneven steps (45) and (46) of the block flange (4). Then, the lower end of the receiver tank (3) is attached to the block flange (4).

Further, as shown in FIG. 1, the upper part of the receiver tank (3) is fixed to one header (11) via a bracket (6).

In the heat exchanger with the receiver tank of this embodiment, the header (11), the flat tube (12),
Each core component such as the fin (13), the side plate (14), the receiver tank (3), and the block flange (4) is made of aluminum (including its alloy), an aluminum brazing sheet, or the like, and appropriately. While brazing filler metal is interposed, they are collectively brazed in a furnace in a temporarily assembled state, so that the whole is connected and integrated.

In the present embodiment, the flange-shaped partition (50) of the block flange (4) is joined and fixed to the inner peripheral surface of the header (11) during this collective brazing.

The heat exchanger with a receiver tank having the above construction is used as a condenser of an air conditioning refrigeration system of an automobile together with a compressor, a pressure reducing means such as an expansion valve, and an evaporator. Then, in this refrigeration cycle, the high-temperature and high-pressure gas refrigerant compressed by the compressor is condensed into the condenser inlet (1a).
From the first to third passes (P
1) to (P3) flow in a meandering manner, during which heat is exchanged with the outside air and condensed.

This condensed refrigerant is introduced from the condenser outlet (1b) into the inflow passage (4a) of the block flange (4),
The receiver tank inlet (3
It is introduced from a) into the receiver tank (3).

The refrigerant introduced into the receiver tank (3) is temporarily stored in the tank, and only the liquid refrigerant flows out from the receiver tank outlet (3b) and passes through the outflow passage (4b) to the outflow passage (4b). ) Is introduced into the supercooling section (2) from the outflow side end, that is, the supercooling section inlet (2a).

The liquid refrigerant introduced into the subcooling section (2) is
While flowing through the supercooling section (2), it is supercooled by the outside air and then flows out through the supercooling section outlet (2b).

The liquid refrigerant thus discharged from the heat exchanger with the receiver tank is decompressed and expanded by the expansion valve,
In the evaporator, heat is absorbed from the outside air to be vaporized and vaporized, and the vapor returns to the compressor. In this way, the refrigerant circulates in the refrigeration cycle of the refrigeration system to obtain a predetermined refrigeration performance.

As described above, according to the heat exchanger with the receiver tank of the present embodiment, the block flange (4) for connecting the receiver tank and the embedded portion (42) are attached to the header of the heat exchanger body (10). Since it is joined in the state of being buried in (11), the installation space of the buried portion (42) can be omitted, and the size and size can be reduced.

Further, a flange-shaped partition (50) is provided around the inlet of the inflow passage (4a) on the upper end surface of the buried portion (42).
Are integrally provided, and the partition section (50) partitions the inside of one header (11) to condense section (1) and supercooling section (2).
Since it is divided into and, it is not necessary to separately assemble a partition member for partitioning between the condensing section (1) and the supercooling section (2), and the number of parts can be reduced accordingly. The assembling work can be easily performed, and the cost can be reduced.

Furthermore, a part of the block flange (4) (4
Since 2) is embedded in the one header (11), the receiver tank (4) joined to the block flange (4) can be brought as close as possible to the one header (11), and the heat The entire exchanger can be made smaller.

Further, in this embodiment, the inflow side of the inflow passage (4a) in the block flange (4) is lowered so that the outflow side end of the inflow passage (4a) is lower than the inflow side end. Since the receiver tank (3) is arranged, the receiver tank (3) can be arranged at a lower position as a whole, and accordingly, the receiver tank (3) having a long size can be used. Therefore, a sufficiently large tank capacity of the receiver tank (3) can be secured, a stable region in a supercooled state of the refrigerant can be widened, and an excessive amount of the refrigerant and an insufficient amount of the refrigerant can be prevented, and stable refrigeration can be achieved. Performance can be obtained and refrigeration performance can be improved.

Further, since the receiver tank (3) can be of a long size, it is possible to use a receiver tank (3) having a small diameter size while ensuring a sufficient tank capacity, and to further reduce the size and size. Can be planned.

Further, in this embodiment, the descending flow path (40) in the inflow path (4a) of the block flange (4) is used.
a) is inclined with respect to the axis of the header (11), and the upper opening surface of the descending flow path (40a) is attached to the header (1).
Since it is orthogonal to the axis of 1), the descending flow path (40
The upper end opening area of a) can be formed larger than the flow path area in the middle of the descending flow path (40a). Since the upper end opening area of the descending flow path (40a) can be formed large as described above, the introduction of the refrigerant can be efficiently and smoothly performed,
The pressure loss can be reduced, the refrigerant can be supplied in a more stable state, and the refrigeration performance can be further improved.

For reference, in this embodiment, the upper opening area (condensing section outlet 1b) of the downflow channel (40a) is 6
It is set as large as about 2 mm ² .

In the above embodiment, the present invention is applied to a heat exchanger with a receiver tank in which a supercooling unit is formed in a heat exchanger body, that is, a case where a so-called subcool system condenser is applied. The present invention is not limited to this, and can be applied to a heat exchanger in which a condenser and a subcooler are separately provided in the same manner as described above, and a supercooling portion is not formed in the heat exchanger body. It can also be applied to a heat exchanger with a receiver tank, such as a condenser with a receiver tank.

Further, in the above embodiment, the inlet / outlet member is formed separately from the tank main body, but the present invention is not limited to this, and may be applied to one in which the inlet / outlet member is formed integrally with the tank main body. You can

Needless to say, the number of passes of the heat exchanger main body, the number of heat exchange tubes in each pass, etc. are not limited to the above.

[0097]

As described above, according to the present invention, since the receiver tank connecting member is joined in a state where the embedded portion is embedded in the header of the heat exchanger body, the installation space for the embedded portion can be reduced. It can be omitted and the size and size can be reduced. Furthermore, since a flange-shaped partition is integrally provided around the inlet of the inflow passage on the upper end surface of the embedded portion, and one header is partitioned by the partition,
Since it is not necessary to separately assemble a partition member for partitioning the inside of the header, the number of parts can be reduced correspondingly, and the assembling work can be performed easily, and eventually the cost can be reduced. Further, since a part of the coupling member is embedded in one of the headers, the receiver tank assembled to the coupling member can be brought as close as possible to the one of the headers, thereby achieving further miniaturization and compactness. There is an effect that can be.

In the present invention, when the inflow side of the inflow path of the coupling member is lowered, the outflow side end of the inflow path can be arranged at a lower position than the inflow side end, so that it is assembled at the lower position. The receiver tank can be installed at a lower position as a whole, and as a result, a receiver tank having a long size can be used.
Therefore, it is possible to secure a sufficiently large tank capacity of the receiver tank, widen the stable region in the supercooled state of the refrigerant, and prevent an excessive amount of the refrigerant and an insufficient amount of the refrigerant,
Stable refrigerating performance can be obtained, and the refrigerating performance can be further improved. Moreover, since a long size receiver tank can be used,
There is an advantage that it is possible to use a tank having a small diameter while maintaining a sufficient tank capacity, and to further reduce the size and size.

Further, in the present invention, when the descending passage in the inflow passage of the coupling member is inclined with respect to the axial center of the header, the opening area of the upper end of the descending passage can be increased. Therefore, there are advantages that the refrigerant can be introduced efficiently and smoothly, the pressure loss can be reduced, the refrigerant can be supplied in a more stable state, and the refrigeration performance can be further improved.

[Brief description of drawings]

FIG. 1 is a front view showing both sides of a heat exchanger with a receiver tank according to an embodiment of the present invention.

FIG. 2 is an enlarged front cross-sectional view showing the periphery of the block flange in the heat exchanger of the embodiment.

FIG. 3 is a front cross-sectional view showing the block flange and its periphery in the heat exchanger of the embodiment in an exploded manner.

FIG. 4 is a perspective view showing a block flange of the embodiment.

FIG. 5 is a plan view showing a block flange of the embodiment.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is an enlarged plan view showing the vicinity of the inlet of the block flange of the embodiment.

FIG. 8 is a front view schematically showing a refrigerant flow path in a conventional heat exchanger with a receiver tank.

FIG. 9 is a front sectional view showing a block flange and its surroundings in a conventional heat exchanger with a receiver tank in a disassembled state.

[Explanation of symbols]

1 ... Condensing part 2 ... Supercooling section 3 ... Receiver tank 3a ... Receiver tank inlet 3b ... Receiver tank outlet 4 ... Block flange (coupling member) 4a ... Inflow path 4b ... Outflow path 10 ... Heat exchanger body 11 ... Header 12 ... Flat tube (heat exchange tube) 16 ... Partition plate (partition member) 40a ... Refrigerant descending flow path 41 ... Block flange body (coupling member body) 42 ... Buried part 50 ... Flange-shaped partition (partition member)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keiji Yamazaki             Showaden 1-480 Inuzuka, Oyama City, Tochigi Prefecture             Koyama Works Co., Ltd. F-term (reference) 3L065 DA13                 3L103 AA03 AA05 BB38 CC22 CC30                       DD03 DD08 DD18 DD34 DD42                       DD73

Claims (19)

[Claims] 1. A heat exchange system in which a plurality of heat exchange tubes, both ends of which are connected in communication with each other, are arranged in parallel between a pair of headers, and a refrigerant is condensed by a condensing section formed by the heat exchange tubes. A main body, a receiver tank inlet and an outlet are provided at the lower end, the receiver tank stores the refrigerant introduced from the receiver tank inlet, and only the liquid refrigerant flows out from the receiver tank outlet; And a coupling member for coupling the one header to the one header, the coupling member being provided with a coupling member main body to which the lower end of the receiver tank is assembled, and a side portion of the main body, and being embedded in the one header. And the inflow side end portion are arranged on the upper end surface of the embedded portion so as to communicate with the condensing portion, and the outflow side end portion is in front. And an inflow passage that is disposed on the upper end surface of the coupling member body and communicates with the receiver tank inlet, the outer periphery of the upper end of the embedded portion of the coupling member is integrally formed with a flange-shaped partition that projects outward, The outer peripheral edge of the flange-shaped partition is joined to the inner peripheral surface of the one header, the inside of the one header is partitioned by the flange-shaped partition, the refrigerant condensed by the condenser unit A heat exchanger with a receiver tank, which is configured to be introduced from an inflow side end portion of an inflow path of the coupling member and introduced into the receiver tank through the inflow path. 2. The heat exchanger with a receiver tank according to claim 1, wherein an inflow path of the coupling member is formed as a refrigerant descending flow path for allowing the inflow side half part to descend the refrigerant downward. 3. The heat exchanger with a receiver tank according to claim 2, wherein the refrigerant descending passage is arranged such that the passage direction is inclined with respect to the axis of the one header. 4. A plurality of heat exchange tubes, both ends of which are communicated and connected to both headers, are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by partitioning members in the same direction to form an upper condenser part. The heat exchanger main body is divided into a lower supercooling section, and a receiver tank inlet and outlet are provided at the lower end, and the refrigerant flowing from the receiver tank inlet is stored and only the liquid refrigerant is supplied from the receiver tank outlet. A receiver tank adapted to flow out, and a coupling member for coupling the receiver tank to the one header, wherein the coupling member is a coupling member main body to which the lower end of the receiver tank is assembled, and the side of the main body And an inflow side end portion are disposed on an upper end surface of the embedded portion and communicate with the condensing portion. And an outflow side end portion is disposed on the upper end surface of the coupling member body and communicates with the receiver tank inlet, and an inflow side end portion is disposed on the upper end surface of the coupling member body and the receiver tank outlet And an outflow path having an outflow side end portion arranged on the lower outer surface of the buried portion and communicating with the supercooling portion, and projecting outward at the outer periphery of the upper end of the buried portion in the coupling member. The flange-shaped partition is integrally formed, and the flange-shaped partition is configured as the partition member in the one header, and the refrigerant condensed by the condensing unit flows into the inflow path of the coupling member. While flowing in from the side end portion and being introduced into the receiver tank through the inflow passage, the refrigerant in the receiver tank passes through the outflow passage of the coupling member and is at the outflow side end portion of the outflow passage. A receiver tank with heat exchanger, characterized by comprising configured to be introduced into the supercooling unit. 5. The heat exchanger with a receiver tank according to claim 4, wherein an inflow path of the coupling member is arranged such that an outflow side end thereof is lower than an inflow side end. 6. The heat exchanger with a receiver tank according to claim 4, wherein an outflow side end of the inflow path of the coupling member is arranged at a height position corresponding to the supercooling section. 7. The heat exchange with receiver tank according to claim 4, wherein the inflow path of the coupling member is formed as a refrigerant descending flow path for allowing the inflow side half part to descend the refrigerant downward. vessel. 8. The heat exchanger with a receiver tank according to claim 7, wherein the refrigerant descending passage is arranged such that the passage direction is inclined with respect to the axis of the one header. 9. A liquid refrigerant storage is provided in a heat exchanger main body in which a plurality of heat exchange tubes having both ends communicating with both headers are arranged in parallel between a pair of headers, and a condensing section is formed by the heat exchange tubes. Is a receiver tank coupling member for coupling a receiver tank for use, wherein a lower end of the receiver tank is assembled, a coupling member body is provided on a side portion of the coupling member body, and is disposed in an embedded state in one header. And the inflow side end portion is disposed on the upper end surface of the embedded portion, and the outflow side end portion is disposed on the upper end surface of the coupling member body, and the condensing portion is connected to the receiver tank at the lower end of the receiver tank. An inflow path for communicating with the inlet and an outer periphery of an upper end of the buried portion are integrally formed so as to project outward, and an outer peripheral edge is joined to an inner peripheral surface of the one header. A receiver tank coupling member and a flange-like partition piece for dividing the interior of one of the headers. 10. The receiver tank connecting member according to claim 9, wherein the inflow side half portion of the inflow path is formed as a refrigerant descending flow path for lowering the refrigerant downward. 11. The receiver tank coupling member according to claim 10, wherein the refrigerant descending flow passage is arranged such that the flow passage direction is inclined with respect to the axis of the one header. 12. A plurality of heat exchange tubes, both ends of which are communicated and connected to both headers, are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by a partition member in the same direction to form an upper condenser part. A heat exchanger body divided into a lower supercooling section, a receiver tank coupling member for coupling a receiver tank for liquid refrigerant storage, and a coupling member body to which the lower end of the receiver tank is assembled, An embedded portion provided on a side portion of the coupling member main body and disposed in an embedded state in one header, an inflow side end portion is disposed on an upper end surface of the embedded portion, and an outflow side end portion is the coupling member. An inflow path disposed on the upper end surface of the main body for communicating the condensing part with the receiver tank inlet at the lower end of the receiver tank, and an inflow side end portion disposed on the upper end surface of the coupling member main body and flowing out. End is disposed on the lower outer surface of the embedded portion,
An outlet passage for communicating an outlet of the receiver tank at the lower end of the receiver tank with the supercooling portion, and an outer periphery of the upper end of the buried portion, which is integrally formed so as to project outward, and the partition member in the one header. And a flange-shaped partition configured as a receiver tank coupling member. 13. The receiver tank coupling member according to claim 12, wherein the outflow side end portion of the inflow path is arranged lower than the inflow side end portion. 14. The receiver tank connecting member according to claim 12, wherein the inflow path of the connecting member is formed as a refrigerant descending flow path for allowing the inflow side half part to descend the refrigerant downward. 15. The receiver tank connecting member according to claim 14, wherein the refrigerant descending passage is arranged such that the passage direction is inclined with respect to the axis of the one header. 16. A liquid refrigerant reservoir is provided between a pair of headers, wherein a plurality of heat exchange tubes whose both ends communicate with each other are connected in parallel, and a heat exchanger main body in which a condensing section is formed by the heat exchange tubes. A receiver tank assembling structure of a heat exchanger configured to assemble a receiver tank for use with a connecting member main body, and a connecting member having an embedded portion provided on a side portion of the main body, wherein the connecting member is An inflow path having an inflow side end portion arranged at an upper end surface of the embedded portion and an outflow side end portion arranged at an upper end surface of the coupling member main body, and an outer periphery of an upper end portion of the embedded portion protruding outward. And a flange-shaped partition integrally formed as described above, wherein the coupling member is attached such that the embedded portion is embedded in one header, and The outer peripheral edge of the partition is joined to the inner peripheral surface of the one header so that the parts are partitioned, the lower end of the receiver tank is assembled to the coupling member body, and the condensing part is the receiver tank. A receiver tank assembly structure for a heat exchanger, characterized in that it is connected to the receiver tank inlet at the lower end by the inflow path. 17. A plurality of heat exchange tubes, both ends of which are communicated and connected to both headers, are arranged in parallel between a pair of headers, and the insides of both headers are partitioned by a partition member in the same direction to form an upper condenser part. A receiver tank assembly structure for a heat exchanger, in which a receiver tank for liquid refrigerant storage is assembled to a heat exchanger body that is divided into a lower-side supercooling section. A coupling member having an embedded portion provided on a side portion, wherein the coupling member has an inflow side end portion arranged on an upper end surface of the embedded portion, and an outflow side end portion on an upper end surface of the coupling member body. An inflow passage arranged, an inflow side end portion is arranged on an upper end surface of the coupling member body, and an outflow side end portion is arranged on a lower surface of the embedded portion, and an upper end outer periphery of the embedded portion. ,
And a flange-shaped partition integrally formed so as to project outward, the coupling member is mounted in a state in which the embedded portion is embedded in one header, and the flange-shaped partition of the one An outer peripheral edge of the partition is joined to an inner peripheral surface of the one header so as to be configured as the partition member in a header, and a lower end of the receiver tank is assembled to the coupling member body, Part is connected to the receiver tank inlet at the lower end of the receiver tank by the inflow path, and the receiver tank outlet at the lower end of the receiver tank is connected to the supercooling part by the outflow path. Receiver tank assembly structure. 18. A refrigerant compressed by a compressor is condensed by a heat exchanger with a receiver tank, the condensed refrigerant is passed through a pressure reducer to reduce the pressure, and the reduced pressure refrigerant is evaporated by an evaporator to the compressor. A refrigeration system configured to return the heat exchanger with a receiver tank, wherein a plurality of heat exchange tubes connecting both ends to both headers are arranged in parallel between a pair of headers, and the heat exchange tubes are configured by the heat exchange tubes. The heat exchanger main body is configured to condense the refrigerant by the condensing part, and the receiver tank inlet and outlet are provided at the lower end, and the refrigerant introduced from the receiver tank inlet is stored to store only the liquid refrigerant in the receiver tank. A receiver tank adapted to flow out from an outlet, and a coupling member for coupling the receiver tank to the one header, A coupling member is a coupling member main body to which the lower end of the receiver tank is assembled, an embedded portion provided on a side portion of the main body and embedded in the one header, and an inflow side end portion is the embedded portion. An inflow passage that is disposed on an upper end surface of the coupling member and communicates with the condenser portion, and an outflow side end portion is disposed on an upper end surface of the coupling member body that communicates with the receiver tank inlet. On the outer periphery of the upper end of the section, a flange-shaped partition that projects outward is integrally formed, and the outer peripheral edge of the flange-shaped partition is joined to the inner peripheral surface of the one header, and the flange-shaped partition is used. A refrigeration system characterized in that the inside of the one header is partitioned. 19. A refrigerant compressed by a compressor is condensed by a heat exchanger with a receiver tank, the condensed refrigerant is passed through a pressure reducer to reduce the pressure, and the pressure-reduced refrigerant is evaporated by an evaporator to the compressor. A refrigeration system to be returned, the heat exchanger with a receiver tank, between the pair of headers, a plurality of heat exchange tubes that connect both ends to both headers are arranged in parallel, the inside of both headers, The heat exchanger main body is divided into equal parts by a partition member and is divided into an upper condensing part and a lower supercooling part, and a receiver tank inlet and an outlet are provided at the lower end, and the refrigerant introduced from the receiver tank inlet is provided. And a receiver tank configured to allow only the liquid refrigerant to flow out from the receiver tank outlet, and for connecting the receiver tank to the one header. A coupling member, the coupling member includes a coupling member body to which a lower end of the receiver tank is assembled, a buried portion provided in a side portion of the body, and embedded in the one header. An inflow path, a side end of which is disposed on an upper end surface of the buried portion and communicates with the condenser, and an outflow side end of which is disposed on an upper end surface of the coupling member body and communicates with the receiver tank inlet; An outflow passage having a side end portion arranged on an upper end surface of the coupling member body and communicating with the receiver tank outlet, and an outflow side end portion arranged on a lower outer surface of the buried portion and communicating with the supercooling portion. A flange-shaped partition that projects outward is integrally formed on the outer periphery of the upper end of the embedded portion of the coupling member, and the flange-shaped partition is configured as the partition member in the one header. Refrigeration system and wherein the door.