JPH10170107A - Reversible direction receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and low cost direction reversible receiver by providing a pair of pipes for the flow-in and flow-out of refrigerant communicated with and connected to a sealed vessel and partitioning two chambers in communication with the pipes by a partition in a reversible direction receiver which is capable of changing over the flowing direction of the refrigerant reversibly. SOLUTION: A direction reversible receiver interposed in a refrigerant circuit of a heat pump type refrigeration cycle is provided with a sealed vessel 61 whose interior is partitioned into two sections, thereby forming two compartments 63 and 64. A partition board 62 is notched at a specified height and designed to communicate these two compartments 63 and 64. A pair of pipes 65 and 66 for the flow-in and flow-out of refrigerant, which are communicated with and connected to the compartments 63 and 64 respectively, are inserted into the upper part of the realed vessel 61. A gas refrigerant and a liquid refrigerant are separated from each other in this reversible direction receiver. The liquid refrigerant out of these refrigerants are fed to a throttling device from the pipe 65 where the pressure is reduced and furthermore, the heat is absorbed in a heat exchanger and it is arranged to be returned to a compressor by way of a four way valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversible directional receiver for use in a heat pump type refrigeration cycle in which the flow direction of a refrigerant can be reversibly switched.

[0002]

2. Description of the Related Art Conventionally, in a heat pump type refrigeration cycle in which an optimum refrigerant amount changes, for example, Japanese Patent Application Laid-Open No. 4-6236 discloses a method for coping with the forward and reverse flow of refrigerant.
2. Description of the Related Art As disclosed in Japanese Unexamined Patent Publication No. 2 (1993) -1995, there is known a receiver in which a number of check valves are incorporated.

[0003]

However, such a configuration has a problem that the internal structure is complicated and the cost is high because many check valves are incorporated in the receiver. The present invention has been made in view of the above circumstances, and has as its object to provide an inexpensive reversible direction receiver having a simple configuration.

[0004]

According to the first aspect of the present invention,
In a reversible direction receiver used for a heat pump type refrigeration cycle capable of reversibly switching a flow direction of a refrigerant, a closed container having a predetermined volume and a pair of refrigerant inflow / outflow pipes connected to the closed container. And the inside of the closed container is partitioned into a chamber on the side to which the one pipe communicates and a chamber on the side to which the other pipe communicates, and is installed so as to communicate both chambers at a predetermined height position. It consists of a partition plate.

According to a second aspect of the present invention, in the first aspect, the closed container has a vertically long cylindrical shape or a horizontally long cylindrical shape. According to a third aspect of the present invention, in the first aspect, the pair of pipes is inserted from above the airtight container, and a vibration damping plate is provided between the pipe and an upper portion of the partition plate.

According to a fourth aspect of the present invention, in the first aspect, the pair of pipes is inserted from a lower portion of the closed container, and a foam erasing plate is provided on an upper portion of the partition plate facing an insertion end of the pipe. Is provided.

According to a fifth aspect of the present invention, in the first aspect, a communication hole is provided in a lower portion of the partition plate. According to a sixth aspect of the present invention, in the second aspect, the pair of pipes is inserted from both sides of the horizontally long cylindrical closed container, and penetrates the partition plate installed at an intermediate position in the closed container. Is connected to the room.

As a result, according to the first aspect of the present invention,
The internal structure can be significantly simplified and a desired operation as a reversible directional receiver can be realized. According to the second aspect of the present invention, it is possible to use different types according to the space at the place where the device is used.

According to the third aspect of the invention, it is possible to prevent inadvertent shaking even when the pipe size becomes large,
In addition, entrainment of the gaseous refrigerant when the inflow refrigerant amount becomes large can be prevented.

According to the fourth aspect of the present invention, the flowing refrigerant can be efficiently separated into the liquid refrigerant and the gas refrigerant by colliding with the bubble erasing plate. According to the fifth aspect of the present invention, it is possible to cope with a case where the amount of refrigerant accumulated in the closed container is small and the refrigerant cannot pass through the partition plate. According to the sixth aspect of the invention, the same effect as the first aspect of the invention can be expected.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 shows a refrigerant circuit of a heat pump refrigeration cycle to which a reversible directional receiver according to a first embodiment of the present invention is applied.

In FIG. 1, reference numeral 1 denotes a compressor.
Is connected to the four-way valve 2. The four-way valve 2 is for switching the flow of the refrigerant from the compressor 1.
And, in one switching flow path by the four-way valve 2,
The heat exchanger 3 is connected, and further, a reversible receiver 6 is connected to the heat exchanger 3 via a parallel circuit of a check valve 4 and a throttle device 5. Further, a heat exchanger 7 is connected to the other switching flow path by the four-way valve 2, and the heat exchanger 7 is further connected to a reversible direction receiver 6 through a parallel circuit of a check valve 8 and a throttle device 9. Are connected.

In this case, the flow of the refrigerant from the compressor 1 can be switched by the switching operation of the four-way valve 2. Here, the solid arrow indicates the flow of the refrigerant in the forward direction, and the broken arrow indicates the flow of the refrigerant in the reverse direction. Shows the flow. When the refrigerant flows in the forward direction, the refrigerant compressed by the compressor 1 is sent to the heat exchanger 3 through the four-way valve 2 and radiated here.
It is sent to the reversible direction receiver 6 via the check valve 4, and is separated into the liquid refrigerant and the gas refrigerant by the reversible direction receiver 6, only the liquid refrigerant is discharged, and then the pressure is reduced by the expansion device 9, and the heat exchange is performed. Heat is absorbed by the compressor 7, passes through the four-way valve 2,
And, in the same way, in the case of the forward flow of the refrigerant,
The refrigerant compressed by the compressor 1 is sent to the heat exchanger 7 through the four-way valve 2 and then radiated there, sent to the reversible receiver 6 via the check valve 8 and converted into the liquid refrigerant and the gas refrigerant. The liquid refrigerant is separated and sent to the expansion device 5 to reduce the pressure. The heat is absorbed by the heat exchanger 3 and returned to the compressor 1 through the four-way valve 2.

In such a refrigerant circuit, the reversible directional receiver 6 changes the temperature of the air flowing into the heat exchanger 3 (7) on the heat radiation side or the heat exchanger 7 (3) on the heat absorption side due to seasonal change or room temperature change. When the temperature fluctuates between −30 ° C. and + 50 ° C., the performance of the heat exchangers 3 and 7 changes, and even if the amount of refrigerant accumulated in the heat exchangers 3 and 7 changes, It is possible to cope with the change in the amount of refrigerant.

FIGS. 2A, 2B and 2C show a schematic configuration of a reversible directional receiver 6 used in such a refrigerant circuit. Here, FIG. 2A is a front sectional view, FIG. 2B is a side sectional view, and FIG. 2C is a top sectional view.

In FIG. 1, reference numeral 61 denotes a vertically long cylindrical closed container, and the closed container 61 has a predetermined internal volume. The inside of this closed container 61 is divided by a partition plate 62 arranged along the axial direction, and the two
3, 64 are formed. In this case, the partition plate 62
The two chambers 63, 6 are cut out at predetermined height positions.
4 is communicated.

A pair of refrigerant inflow / outflow pipes 65 and 66 which are separately connected to the chambers 63 and 64, respectively, are inserted into the upper portion of the closed vessel 61. in this case,
One refrigerant inflow / outflow pipe 65 communicates with the check valve 4 and the expansion device 5 of the cooling circuit shown in FIG.
The outlet pipe 66 is connected to the check valve 8 and the throttle device 9 of the cooling circuit.
Is in communication with

When the forward flow of the refrigerant is selected by the four-way valve 2, the refrigerant from the compressor 1 is sent to the heat exchanger 3 through the four-way valve 2 in the direction indicated by the solid line in FIG. , Through the check valve 4 to the reversible directional receiver 6. Then, the reversible directional receiver 6 separates the refrigerant into a gas refrigerant and a liquid refrigerant. The liquid refrigerant is sent to the expansion device 9, the pressure thereof is reduced, the heat is absorbed by the heat exchanger 7, and the four-way valve is removed. 2 and is returned to the compressor 1.

In this case, in the reversible direction receiver 6, the liquid refrigerant containing bubbles is supplied from the refrigerant inflow / outflow pipe 65 to the chamber 63.
When the liquid refrigerant flows into the chamber 63, the flow velocity of the liquid refrigerant mixed with air bubbles decreases due to the expanded resistance at the time of flowing into the chamber 63, and is separated into the liquid refrigerant and the gas refrigerant. At this time, since the closed container 61 is divided into the chambers 63 and 64 by the partition plate 62, the liquid refrigerant is accumulated only in the chamber 63 side.

Thereafter, when the amount of the liquid refrigerant accumulated in the chamber 63 increases and reaches a predetermined height of the partition plate 62, the partition plate 6
2 and is moved to the opposite chamber 64. And
Further, when the moving amount of the liquid refrigerant to the chamber 64 increases and rises to the position where the refrigerant inflow / outflow pipe 66 is inserted on the upper surface of the closed container 61, only the liquid refrigerant flows out from the pipe 66.

In the above description, the case of the refrigerant flowing in the forward direction has been described. However, in the case of the refrigerant flowing in the reverse direction, the liquid refrigerant flowing from the refrigerant inflow / outflow pipe 66 is stored in the chamber 64. Thereafter, the vehicle gets over the partition plate 62, moves to the chamber 63, and flows out of the refrigerant inflow / outflow pipe 65, the details of which are the same as described above.

Accordingly, in this way, the inside of the sealed container 61 is divided into two chambers 63 and 64 by the partition plate 62, and the respective chambers 63 and 64 are communicated at a predetermined height position. In addition, refrigerant inflow / outflow pipes 65 and 6
Since the communication devices 6 are individually connected to each other, the internal structure can be significantly simplified, and a predetermined operation as the reversible direction receiver 6 can be realized. (Second Embodiment) FIGS. 3A and 3B show a schematic configuration of a reversible directional receiver according to a second embodiment of the present invention.
The same parts as those in FIG. 2 are denoted by the same reference numerals. Here, FIG.
(A) is a front sectional view, and (b) is a top sectional view.

In this case, the reversible directional receiver 6 is provided with a damping plate 11 above the partition plate 62 inside the sealed container 61 so as to be parallel to the upper surface of the sealed container 61. The pipes 65 and 66 are respectively supported through.

In this way, the sealed container 61 of the reversible direction receiver 6 becomes large, and the pipes 65 and 66 to be inserted are inserted.
In the case where the dimension of the refrigerant becomes large, it is possible to prevent inadvertent shaking by the penetrating support by the damping plate 11, and to prevent the entrainment of the gas refrigerant when the amount of the refrigerant flowing into the reversible receiver 6 increases. It can also be prevented.

In the above description, the damping plate 11 is provided above the partition plate 62, but may be provided at an intermediate portion of the partition plate 62. (Third Embodiment) FIGS. 4A and 4B show a schematic configuration of a reversible directional receiver according to a second embodiment of the present invention.
The same parts as those in FIG. 2 are denoted by the same reference numerals. Here, FIG.
(A) is a front sectional view, and (b) is a top sectional view.

In this case, the reversible direction receiver 6 is provided with the defoaming plate 12 above the partition plate 62 inside the closed container 61 so as to be parallel to the upper surface of the closed container 61.
A pair of refrigerant inflow / outflow pipes 65 and 66 that are separately connected to the chambers 63 and 64 from the bottom are inserted.

In this way, the refrigerant flowing from the bottom side of the sealed container 61 collides with the bubble erasing plate 12 provided above the partition plate 62, so that the liquid refrigerant and the gas refrigerant are efficiently separated. Can be.

In the above description, the bubble erasing plate 12 is provided above the partition plate 62, but may be provided at an intermediate portion of the partition plate 62. (Fourth Embodiment) FIGS. 5A and 5B show a schematic configuration of a reversible directional receiver according to a second embodiment of the present invention.
The same parts as those in FIG. 2 are denoted by the same reference numerals. Here, FIG.
(A) is a front sectional view, and (b) is a top sectional view.

In this case, the reversible direction receiver 6 has a communication hole 621 formed below the partition plate 62 inside the sealed container 61. By doing so, the chamber 6 inside the closed container 61
3 (64), the amount of the accumulated refrigerant is small, and the refrigerant can stably flow out even when the refrigerant cannot pass through the partition plate 62. (Fifth Embodiment) FIGS. 6A and 6B show a schematic configuration of a reversible directional receiver according to a fifth embodiment of the present invention.
The same parts as those in FIG. 2 are denoted by the same reference numerals. Here, FIG.
(A) is a front sectional view, and (b) is a top sectional view.

In this case, the sealed container 61 of the reversible direction receiver 6 has a horizontally long tubular shape. In addition, the closed container 61
Is a partition plate 62 having its inside arranged along the radial direction.
And two chambers 63 and 64 are formed. In this case, the partition plate 62 cuts off a predetermined height position so that these two chambers 63 and 64 communicate with each other.

Then, a pair of refrigerant inflow / outflow pipes 65 and 66 which are respectively connected to the chambers 63 and 64 from the both end surfaces of the closed container 61 are inserted. Even in this case, the same effect as in the first embodiment can be expected. (Sixth Embodiment) FIGS. 7A and 7B show a schematic configuration of a reversible directional receiver according to a sixth embodiment of the present invention.
6 are denoted by the same reference numerals. Here, FIG.
(A) is a front sectional view, and (b) is a top sectional view.

In this case, a pair of refrigerant inflow / outflow pipes 65 and 66 inserted from both end surfaces of the closed container 61 are supported by the partition plate 62 so as to penetrate therethrough. The refrigerant inflow / outflow pipe 66
Is connected to the chamber 63 in communication.

In this way, the size of the sealed container 61 of the reversible receiver 6 is increased, and the pipes 65 and 66 to be inserted are inserted.
In the case where the dimension becomes large, careless shaking can be prevented by the penetration support by the partition plate 62.

[0034]

As described above, according to the present invention, it is possible to provide a simple and inexpensive reversible receiver.

[Brief description of the drawings]

FIG. 1 is a diagram showing a refrigerant circuit of a heat pump refrigeration cycle to which a reversible direction receiver according to a first embodiment of the present invention is applied.

FIG. 2 is a diagram illustrating a schematic configuration of a reversible direction receiver according to the first embodiment.

FIG. 3 is a diagram showing a schematic configuration of a reversible direction receiver according to a second embodiment of the present invention.

FIG. 4 is a diagram illustrating a schematic configuration of a reversible direction receiver according to a third embodiment of the present invention.

FIG. 5 is a diagram illustrating a schematic configuration of a reversible direction receiver according to a fourth embodiment of the present invention.

FIG. 6 is a diagram showing a schematic configuration of a reversible direction receiver according to a fifth embodiment of the present invention.

FIG. 7 is a diagram illustrating a schematic configuration of a reversible direction receiver according to a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Four-way valve, 3 ... Heat exchanger, 4 ... Check valve, 5 ... Throttle device, 6 ... Reversible direction receiver, 61 ... Airtight container, 62 ... Partition plate, 621 ... Communication hole, 63 64: chamber, 65, 66: refrigerant inflow / outflow pipe, 7: heat exchanger, 8: check valve, 9: throttle device, 11: damping plate, 12: foam erasing plate.

Claims (6)

[Claims] 1. A reversible directional receiver for use in a heat pump refrigeration cycle capable of reversibly switching the flow direction of a refrigerant, comprising: a closed container having a predetermined volume; and a refrigerant inflow / outflow connected to the closed container. And a pair of pipes, and the interior of the closed container is partitioned into a chamber on the side where the one pipe is communicated and a chamber on the side where the other pipe is communicated, and communicates the two chambers at a predetermined height position. A reverse direction receiver characterized by comprising a partition plate installed as described above. 2. The reverse receiver according to claim 1, wherein the closed container has a vertically long cylindrical shape or a horizontally long cylindrical shape. 3. The reverse of claim 1, wherein said pair of pipes is inserted from above said closed vessel, and a vibration damping plate is provided between said pipe and an upper portion of said partition plate. Direction receiver. 4. The apparatus according to claim 1, wherein said pair of pipes is inserted from a lower portion of said closed container, and a foam erasing plate is provided above said partition plate opposite to an insertion end of said pipe. Reverse receiver as described. 5. The reverse receiver according to claim 1, wherein a communication hole is provided in a lower portion of the partition plate. 6. The pair of pipes is inserted from both sides of the horizontally long cylindrical closed container, and penetrates through the partition plate installed at an intermediate position in the closed container to communicate with each chamber. 3. The backward receiver according to claim 2, wherein: