KR20200031309A - Refrigerant recovery apparatus - Google Patents

Abstract

A refrigerant recovery device according to an embodiment of the present invention may comprise: a refrigerant transport system which recovers a first refrigerant from a target device to a refrigerant container, or injects the same from the refrigerant container into the target device; and a heat pump system which circulates a second refrigerant to heat or cool the first refrigerant. Here, the refrigerant transport system may comprise: a first compressor compressing the first refrigerant; a first heat exchanger which communicates with the refrigerant container and allows the first refrigerant and the second refrigerant to exchange heat; and a first four-way valve which allows one between a suction unit and a discharge unit of the first compressor to communicate with the target device, and the other one to communicate with the first heat exchanger. In addition, the heat pump system may comprise: a second compressor compressing the second refrigerant; a second heat exchanger in which the second refrigerant is condensed or evaporated, and which is connected to the first heat exchanger by a circulation flow path; and a second four-way valve which allows one between a suction unit and a discharge unit of the second compressor to communicate with the first heat exchanger, and the other one to communicate with the second heat exchanger. Therefore, the recovery speed and the injection speed of the refrigerant can be increased.

Description

Refrigerant recovery device {REFRIGERANT RECOVERY APPARATUS}

The present invention relates to a refrigerant recovery device.

The refrigerant recovery device is a device that recovers refrigerant enclosed in a device (hereinafter referred to as a target device) driven using a refrigerant such as an air conditioner or a refrigerator.

In general, when the refrigerant recovery device recovers the refrigerant, cooling of the refrigerant is essential to increase recovery capacity and reduce recovery time.

The refrigerant recycling unit disclosed in Prior Art Document 1 (US 5313808) dissipates the recovered refrigerant that has passed through the compressor into the air in cooling the recovered refrigerant. However, in general, since the temperature of air is room temperature (about 20 degrees Celsius), the amount of heat exchanged with air is relatively small, and there is a problem that the recovery rate of refrigerant is also limited.

Meanwhile, the refrigerant filling device can inject refrigerant into a target device. For example, after the refrigerant of the target device is recovered by the refrigerant recovery device, maintenance work of the target device may be performed, and when the maintenance work is completed, a new refrigerant may be injected into the target device by the refrigerant filling device.

Since increasing the temperature of the injected refrigerant may shorten the refrigerant injection time, the conventional refrigerant filling device heated the injection tank using a heater as disclosed in the prior art document 2 (US 2009/0158756 A1). However, this type of heating has a problem in that energy consumption is large and the heating time of the refrigerant is long because it heats not only the refrigerant but also the entire injection container.

In addition, in the related art, there is a inconvenience in that a refrigerant recovery device and a refrigerant filling device must be provided for recovering and filling the refrigerant in the target device.

US 5313808 (Registered on May 24, 1994) US 2009/0158756 A1 (released on June 25, 2009)

One problem to be solved by the present invention is to provide a refrigerant recovery device capable of injection of refrigerant as well as recovery of refrigerant.

Another problem to be solved by the present invention is to provide a refrigerant recovery device having a high refrigerant recovery rate.

Another problem to be solved by the present invention is to provide a refrigerant recovery device having a high refrigerant injection rate.

A refrigerant recovery device according to a first embodiment of the present invention includes a refrigerant transfer system for recovering a first refrigerant from a target device to a refrigerant container or injecting the refrigerant into the target device; And a heat pump system that circulates a second refrigerant that heats or cools the first refrigerant. The refrigerant transfer system includes a first compressor for compressing the first refrigerant; A first heat exchanger in communication with the refrigerant container and exchanging the first refrigerant and the second refrigerant; And a first quadrilateral communicating one of the suction and discharge portions of the first compressor with the target device and the other with the first heat exchanger. The heat pump system includes a second compressor for compressing the second refrigerant; A second heat exchanger in which the second refrigerant is condensed or evaporated and connected to the first heat exchanger through a circulation passage; And a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger.

The heat pump system may further include an expansion mechanism installed in the circulation passage and the second refrigerant expanded.

In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container, the first quadrilateral communicates with the suction unit of the first compressor and the discharge unit of the first compressor through the first heat exchange. The second quadrilateral may communicate with a suction portion of the second compressor with the first heat exchanger and a discharge portion of the second compressor with the second heat exchanger.

In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device, the first four sides communicate with the suction part of the first compressor with the first heat exchanger and the discharge part of the first compressor with the target device. And communicating with the second heat exchanger, the suction part of the second compressor communicates with the second heat exchanger and the discharge part of the second compressor communicate with the first heat exchanger.

A refrigerant recovery device according to a second embodiment of the present invention includes a refrigerant transfer system for recovering a first refrigerant from a target device to a refrigerant container or injecting the refrigerant into the target device; And a heat pump system that circulates a second refrigerant that heats or cools the first refrigerant. The refrigerant transfer system includes a first compressor for compressing the first refrigerant; A first heat exchanger in communication with the refrigerant container and exchanging the first refrigerant and the second refrigerant; A second heat exchanger communicating with the target device and exchanging the first refrigerant and the second refrigerant; And a first quadrilateral communicating one of the suction and discharge portions of the first compressor with the first heat exchanger and the other with the second heat exchanger. The heat pump system includes a second compressor for compressing the second refrigerant; A circulation flow path connecting the first heat exchanger and the second heat exchanger; And a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger.

The heat pump system may further include an expansion mechanism installed in the circulation passage and the second refrigerant expanded.

In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container, the first quadrilateral communicates with the suction portion of the first compressor with the second heat exchanger and the discharge portion of the first compressor with the first In communication with the heat exchanger, the second quadrilateral may communicate with the first heat exchanger the suction part of the second compressor and the discharge part of the second compressor with the second heat exchanger.

In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device, the first quadrilateral communicates with the suction portion of the first compressor with the first heat exchanger and the discharge portion of the first compressor with the second In communication with the heat exchanger, the second quadrilateral may communicate with the suction portion of the second compressor with the second heat exchanger and with the discharge portion of the second compressor with the first heat exchanger.

A refrigerant recovery device according to a third embodiment of the present invention includes a refrigerant transfer system for recovering a first refrigerant from a target device to a refrigerant container or injecting the refrigerant into the target device; And a heat pump system that circulates a second refrigerant that heats or cools the first refrigerant. The refrigerant transfer system includes a first compressor for compressing the first refrigerant; And a first quadrilateral communicating one of the suction and discharge portions of the first compressor with the target device and the other with the refrigerant container. The heat pump system includes a second compressor for compressing the second refrigerant; A first heat exchanger disposed in the refrigerant container; A second heat exchanger in which the second refrigerant is condensed or evaporated and connected to the first heat exchanger through a circulation passage; And a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger.

The heat pump system may further include an expansion mechanism installed in the circulation passage and the second refrigerant expanded.

In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container, the first quadrilateral communicates with the suction unit of the first compressor and the discharge unit of the first compressor with the refrigerant container. The second quadrant may communicate with the suction portion of the second compressor with the first heat exchanger and the discharge portion of the second compressor with the second heat exchanger.

In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device, the first quadrilateral communicates with the suction part of the first compressor with the refrigerant container and the discharge part of the first compressor with the target device. The second quadrant may communicate with the suction portion of the second compressor with the second heat exchanger and the discharge portion of the second compressor with the first heat exchanger.

According to a preferred embodiment of the present invention, the refrigerant recovery device has the advantage of performing both the recovery of the refrigerant and the injection of the refrigerant by switching the first four sides.

In addition, by cooling the refrigerant discharged from the compressor, the recovery / injection speed of the refrigerant may be increased.

In addition, the efficiency of the compressor may be improved by heating the refrigerant sucked into the compressor, and the recovery / injection speed of the refrigerant may be further increased.

In addition, since the refrigerant recovered / injected along the refrigerant transfer system is heated or cooled by a heat pump system, the heating / cooling speed is increased and energy efficiency is improved.

1 is a block diagram of a refrigerant recovery device according to a first embodiment of the present invention.
2 is a diagram showing a flow path of a refrigerant when the refrigerant recovery device according to the first embodiment of the present invention is in an injection mode.
3 is a block diagram of a refrigerant recovery device according to a second embodiment of the present invention.
4 is a view showing a flow path of the refrigerant when the refrigerant recovery device according to the second embodiment of the present invention is in an injection mode.
5 is a block diagram of a refrigerant recovery device according to a third embodiment of the present invention.
6 is a view showing a flow path of the refrigerant when the refrigerant recovery device according to the third embodiment of the present invention is in the injection mode.

Hereinafter, a specific embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a block diagram of a refrigerant recovery device according to a first embodiment of the present invention.

In addition, FIG. 1 shows a flow path of the refrigerant when the refrigerant recovery device according to the first embodiment of the present invention is in the recovery mode.

The refrigerant recovery device 1 according to the present embodiment can collect the refrigerant from the target device 2 and collect it in the refrigerant container 5 or inject the refrigerant from the refrigerant container 5 into the target device 2. .

The target device 2 may include an outdoor unit 3 and an indoor unit 4 of an air conditioner. However, the present invention is not limited thereto, and it is obvious that the target device 2 may include a refrigerator.

In the refrigerant container 5, refrigerant transferred from the target device 2 to the refrigerant recovery device 1 may be collected. Conversely, a refrigerant transferred from the refrigerant container 5 to the refrigerant recovery device 1 may be injected into the target device 2.

The refrigerant container 5 may be a component included in the refrigerant recovery device 1. However, hereinafter, description will be made on the basis of the case where the refrigerant container 5 has a separate configuration from the refrigerant recovery device 1.

The refrigerant recovery device 1 may include a refrigerant transfer system 10 and a heat pump system 20.

The refrigerant transfer system 10 may transfer the refrigerant of the target device 2 and recover it to the refrigerant container 5. The refrigerant transfer system 10 may transfer the refrigerant in the refrigerant container 5 and inject it into the target device 2. The refrigerant transferred along the refrigerant transfer system 10 may be referred to as a first refrigerant.

The refrigerant transfer system 10 of the present embodiment may include a first compressor 30, a first quadrilateral 50 and a first heat exchanger 70.

The first compressor 30 may compress the first refrigerant. The first refrigerant may be sucked into the suction part 32 of the first compressor 30 and discharged to the discharge part 31.

An oil separator may be provided in the discharge part 31 of the first compressor 30.

The first oblique side 50 may be connected to the suction part 32 and the discharge part 31 of the first compressor 30. The first oblique side 50 communicates any one of the suction part 32 and the discharge part 31 of the first compressor 30 with the target device 2 and the other with the first heat exchanger 70. Can do it.

The first transfer passage 13 may be connected to the first quadrilateral 50. The first transfer passage 13 may be selectively communicated with the suction part 32 or the discharge part 31 of the first compressor 30.

The first transfer channel 13 may communicate with the target device 2. In more detail, the first transfer passage 13 may be connected to the first device 11 connected to the target device 2 and extended to the refrigerant recovery device 1.

When there are a plurality of target devices (2), the first extension passage (11) is a common passage connected to the first transfer passage (13), and a branch passage connected to each target device (3) (4) branched from the common passage It may include.

The second transfer passage 14 may connect the first four sides 50 and the first heat exchanger 70. The second transfer passage 14 may be selectively communicated with the suction part 32 or the discharge part 31 of the first compressor 30.

The first heat exchanger 70 may communicate with the refrigerant container 5. In more detail, the first heat exchanger 70 may be connected to the third transfer channel 15 in communication with the refrigerant container 5. In more detail, the third transfer passage 15 may be connected to the second extension passage 12 extending to the refrigerant recovery device 1 by being connected to the refrigerant container 5.

In the first heat exchanger 70, the first refrigerant flowing along the refrigerant transfer system 10 and the second refrigerant circulating along the heat pump system 20 to be described later may be exchanged.

In more detail, the first heat exchanger 70 includes a heat exchanger transport channel 70A connecting the second transport channel 14 and the third transport channel 15, and a first circulation channel 21 and a product to be described later. 3 may include a heat exchanger circulation passage (70B) connecting the circulation passage (23).

The first refrigerant passing through the heat exchanger transfer flow path 70A and the second refrigerant passing through the heat exchanger circulation flow path 70B may not be mixed with each other, but may be exchanged with each other in a process that flows independently.

For example, the first heat exchanger 70 may be a plate-type heat exchanger each elongated in a direction in which the heat exchanger transport flow path 70A and the heat exchanger circulation flow path 70B cross each other.

As another example, the first heat exchanger 70 may be a double-tube heat exchanger in which any one of the heat exchanger transport flow path 70A and the heat exchanger circulation flow path 70B surrounds the other.

Meanwhile, the heat pump system 20 may circulate the refrigerant to cool or heat the refrigerant flowing along the refrigerant transfer system 10. The refrigerant circulating along the heat pump system 20 may be referred to as a second refrigerant.

The heat pump system 20 of the present exemplary embodiment may include a second compressor 40, a second quadrilateral 60, a second heat exchanger 80, and an expansion mechanism 90.

The second compressor 40 may compress the second refrigerant. The second refrigerant may be sucked into the suction part 42 of the second compressor 40 and discharged to the discharge part 41.

An oil separator may be provided in the discharge part 41 of the second compressor 40.

The second quadrangular side 60 may be connected to the suction portion 42 and the discharge portion 41 of the second compressor 40. The second quadrant 60 communicates with one of the suction part 42 and the discharge part 41 of the second compressor 40 with the first heat exchanger 70 and the other with the second heat exchanger 80. Can communicate with.

The first circulation flow path 21 may be connected to the second oblique side 60. The first circulation passage 21 may be selectively communicated with the suction part 42 or the discharge part 41 of the second compressor 40.

The first circulation flow path 21 may be connected to the first heat exchanger 70. In more detail, the first circulation channel 21 may be connected to the heat exchanger circulation channel 70B of the first heat exchanger.

The second circulation flow path 22 may connect the second quadrangular side 60 and the second heat exchanger 80. The second circulation passage 22 may be selectively communicated with the suction part 42 or the discharge part 41 of the second compressor 40.

The second heat exchanger 80 may be connected to the first heat exchanger 70 through a third circulation channel 23. In more detail, the third circulation channel 23 may be connected to the heat exchanger circulation channel 70B of the first heat exchanger 70.

The second heat exchanger 80 may condense or evaporate the second refrigerant. The second heat exchanger 80 may exchange heat blown by the blowing fan 80A with the second refrigerant. However, the present invention is not limited thereto, and it is of course possible that the second heat exchanger 80 may be configured in a water cooling type.

The expansion mechanism 90 may be installed in the third circulation channel 23. The second refrigerant flowing along the third circulation passage 23 may be expanded while passing through the expansion mechanism 90. The expansion mechanism may include an electronic expansion valve (EEV).

Meanwhile, the refrigerant recovery device 1 according to the present embodiment may be controlled in a recovery mode in which the refrigerant of the target device 2 is recovered and collected in the refrigerant container 5. The operation of the refrigerant recovery device 1 in the recovery mode will be described below.

In the recovery mode, the first quadrilateral 50 communicates the suction portion 32 of the first compressor 30 with the target device 2 and the discharge portion 31 of the first compressor 30 to the first heat exchanger. Can communicate with (70). In more detail, the first quadrilateral 50 communicates the suction portion 32 of the first compressor 30 with the first transfer flow path, and the discharge portion 31 of the first compressor 30 with the second transfer flow path ( 14).

By the suction force of the first compressor (30), the first refrigerant of the target device (2) passes through the first extension channel (11), the first transport channel (13), and the first four sides (50) in sequence. It may be sucked into the suction part 32 of the compressor 30 and compressed in the first compressor 30.

The first refrigerant compressed in the first compressor (30) and discharged to the discharge part (31) of the first compressor (30) passes through the first four sides (50) and the second transport passage (14) to exchange the first heat. It can be flowed into the group (70). In more detail, the first refrigerant may flow into the heat exchanger transfer passage 70A of the first heat exchanger 70.

The first refrigerant passing through the heat exchanger transport flow path 70A may be cooled by heat exchange with the second refrigerant passing through the heat exchanger circulation flow path 70B. That is, the temperature of the second refrigerant passing through the heat exchanger circulation flow path 70B may be lower than the temperature of the first refrigerant passing through the heat exchanger transfer flow path 70A. For example, the temperature of the second refrigerant may be approximately -20 degrees Celsius.

The first refrigerant cooled by the second refrigerant in the first heat exchanger (70) can be recovered into the refrigerant container (5) by sequentially passing through the third transfer passage (15) and the second extension passage (12). .

On the other hand, in the recovery mode, the second quadrant 60 communicates the suction portion 42 of the second compressor 40 with the first heat exchanger 70 and the discharge portion 41 of the second compressor 40. It can communicate with the second heat exchanger (80). In more detail, the second quadrilateral 60 communicates the suction portion 42 of the second compressor 40 with the first circulation flow path 21 and removes the discharge portion 41 of the second compressor 40. It is possible to communicate with the two circulation flow path (22).

The second refrigerant compressed by the second compressor 40 and discharged to the discharge part 41 of the second compressor 40 passes through the second quadrant 60 and the second circulation passage 22 to exchange the second heat. It can be flowed into the group (80).

The second refrigerant flowing into the second heat exchanger 80 may be condensed by exchanging heat with the air flowed by the blowing fan 80A.

The second refrigerant condensed in the second heat exchanger (80) flows to the third circulation flow path (23), passes through the expansion mechanism (90), and expands to the first heat exchanger (70). In more detail, the second refrigerant expanded in the expansion mechanism 90 may flow into the heat exchanger circulation flow path 70B of the first heat exchanger 70.

The second refrigerant passing through the heat exchanger circulation passage (70B) may be evaporated by heat exchange with the first refrigerant passing through the heat exchanger transfer passage (70A), thereby cooling the first refrigerant as described above.

The second refrigerant evaporated from the first heat exchanger (70) may pass through the first circulation passage (21) and the second quadrant (60) and be sucked into the suction part (42) of the second compressor (40).

The second compressor 40 may compress the second refrigerant again and discharge it to the discharge unit 41, and the second refrigerant may circulate the heat pump system 20 along the path described above.

According to the recovery mode of the refrigerant recovery device 1 according to the present embodiment, since the first refrigerant to be recovered is cooled by the second low-temperature refrigerant in the first heat exchanger 70, than the cooling by heat exchange with conventional air The cooling rate can be faster. Accordingly, the recovery speed of the first refrigerant may be increased and the recovery time may be shortened.

2 is a diagram showing a flow path of a refrigerant when the refrigerant recovery device according to the first embodiment of the present invention is in an injection mode.

The refrigerant recovery device 1 according to the present embodiment may be controlled in an injection mode in which the refrigerant in the refrigerant container 5 is transferred and injected into the target device 2. Hereinafter, the operation of the refrigerant recovery device 1 in the injection mode will be described.

In the injection mode, the first quadrilateral 50 communicates the suction portion 32 of the first compressor 30 with the first heat exchanger 70 and targets the discharge portion 31 of the first compressor 30 (2). In more detail, the first quadrilateral 50 communicates the suction portion 32 of the first compressor 30 with the second transfer flow path 14 and the discharge portion 31 of the first compressor 30. It is possible to communicate with the transfer passage 13.

The first refrigerant of the refrigerant container (5) by the suction force of the first compressor (30) is the second extension passage (12)? It may flow through the third transfer channel 15 to the first heat exchanger (70). In more detail, the first refrigerant may flow into the heat exchanger transfer passage 70A of the first heat exchanger 70.

The first refrigerant passing through the heat exchanger transfer flow path 70A may be heated by heat exchange with the second refrigerant passing through the heat exchanger circulation flow path 70B. That is, the temperature of the second refrigerant passing through the heat exchanger circulation flow path 70B may be higher than the temperature of the first refrigerant passing through the heat exchanger transfer flow path 70A.

The first refrigerant heated by the second refrigerant in the first heat exchanger (70) passes through the second transfer passage (14) and the first four sides (50), and the suction part (32) of the first compressor (30) It can be sucked into, and compressed in the first compressor (30).

The first refrigerant compressed in the first compressor (30) can be discharged to the discharge part (31) of the first compressor (30), the first four sides (50), the first transport passage (13) and the first extension The flow path 11 may be sequentially passed to be injected into the target device 2.

On the other hand, in the injection mode, the second quadrilateral 60 communicates with the second heat exchanger 80 the suction part 42 of the second compressor 40 and the discharge part 41 of the second compressor 40. It can be in communication with the first heat exchanger (70). In more detail, the second quadrant 60 communicates the suction portion 42 of the second compressor 40 with the second circulation flow path 22 and removes the discharge portion 41 of the second compressor 40. It is possible to communicate with one circulation passage (21).

The second refrigerant compressed by the second compressor (40) and discharged to the discharge part (41) of the second compressor (40) passes through the second four sides (60) and the first circulation passage (21) to exchange the first heat. It can be flowed into the group (70). In more detail, the second refrigerant may flow into the heat exchanger circulation passage 70B of the first heat exchanger 70.

The second refrigerant passing through the heat exchanger circulation flow path 70B may be condensed by exchanging heat with the first refrigerant passing through the heat exchanger transfer flow path 70A, thereby heating the first refrigerant as described above.

The second refrigerant condensed in the first heat exchanger (70) flows to the third circulation flow path (23), passes through the expansion mechanism (90) and expands, and then flows to the second heat exchanger (80).

The second refrigerant flowing into the second heat exchanger 80 may be evaporated by exchanging heat with the air flowed by the blowing fan 80A.

The second refrigerant evaporated from the second heat exchanger 80 may be sucked through the second circulation passage 22 and the second quadrant 60 to be sucked into the suction part 42 of the second compressor 40.

The second compressor 40 may compress the second refrigerant again and discharge it to the discharge unit 41, and the second refrigerant may circulate the heat pump system 20 along the path described above.

According to the injection mode of the refrigerant recovery device 1 according to the present embodiment, since the first refrigerant to be injected is heated by the high temperature second refrigerant in the first heat exchanger 70, the first refrigerant and the second refrigerant are directly Heat exchanger. That is, compared to the case where the refrigerant container is heated by a heater or the like as in the related art, rapid heating is possible and energy consumption can be reduced. Accordingly, the injection speed of the first refrigerant may be increased and the injection time may be shortened.

3 is a block diagram of a refrigerant recovery device according to a second embodiment of the present invention.

The refrigerant recovery device 100 according to the present embodiment can collect the refrigerant from the target device 2 and collect it in the refrigerant container 5 or inject the refrigerant from the refrigerant container 5 into the target device 2. .

The refrigerant recovery device 100 may include a refrigerant transfer system 110 and a heat pump system 120.

The refrigerant transfer system 110 may transfer the refrigerant of the target device 2 and recover it to the refrigerant container 5. The refrigerant transfer system 110 may transfer the refrigerant in the refrigerant container 5 and inject it into the target device 2. The refrigerant transferred along the refrigerant transfer system 110 may be referred to as a first refrigerant.

The refrigerant transfer system 110 of the present embodiment may include a first compressor 130, a first quadrilateral 150, a first heat exchanger 170 and a second heat exchanger 180.

The first compressor 130 may compress the first refrigerant. The first refrigerant may be sucked into the suction part 132 of the first compressor 130 and discharged to the discharge part 131.

An oil separator may be provided in the discharge part 131 of the first compressor 130.

The first four sides 150 may be connected to the suction unit 132 and the discharge unit 131 of the first compressor 130. The first oblique side 150 communicates any one of the suction part 132 and the discharge part 131 of the first compressor 130 with the first heat exchanger 170 and the other second heat exchanger 180. Can communicate with.

The connecting passage 113A may communicate with the target device 2. In more detail, the connection flow path 113A may be connected to the first extension flow path 11 connected to the target device 2 and extended to the refrigerant recovery device 1.

In addition, the connection flow path 113A may connect the first extension flow path 11 and the second heat exchanger 180.

The first transfer passage 113B may connect the second heat exchanger 180 and the first four sides 150. The first transfer passage 113B may be selectively communicated with the suction part 132 or the discharge part 131 of the first compressor 130.

The second transfer passage 114 may connect the first four sides 150 and the first heat exchanger 170. The second transfer passage 114 may be selectively communicated with the suction part 132 or the discharge part 131 of the first compressor 130.

The first heat exchanger 170 may communicate with the refrigerant container 5. In more detail, the first heat exchanger 170 may be connected to a third transfer passage 115 communicating with the refrigerant container 5. In more detail, the third transport flow path 115 may be connected to the second extension flow path 12 connected to the refrigerant container 5 and extended to the refrigerant recovery device 1.

In the first heat exchanger 170, the first refrigerant flowing along the refrigerant transfer system 110 and the second refrigerant circulating along the heat pump system 120 may be exchanged.

In more detail, the first heat exchanger 170 includes a first heat exchanger transport passage 170A connecting the second transport passage 114 and the third transport passage 115, and a first circulation passage 121 to be described later. And a first heat exchanger circulation passage 170B connecting the third circulation passage 123.

The first refrigerant passing through the first heat exchanger transport flow path 170A and the second refrigerant passing through the first heat exchanger circulation flow path 170B may not be mixed with each other, but may be exchanged with each other in an independent flow process.

As an example, the first heat exchanger 170 may be a plate heat exchanger each formed in a direction in which the first heat exchanger transport flow path 170A and the first heat exchanger circulation flow path 170B cross each other.

As another example, the first heat exchanger 170 may be a double-tube heat exchanger in which one of the first heat exchanger transport flow path 170A and the first heat exchanger circulation flow path 170B surrounds the other.

The second heat exchanger 180 may communicate with the target device 2. In more detail, the second heat exchanger 180 may be connected to the connection passage 113A communicating with the target device 2. In more detail, the connection flow path 113A may be connected to the first extension flow path 11 connected to the target device 2 and extended to the refrigerant recovery device 1.

In the second heat exchanger 180, the first refrigerant flowing along the refrigerant transfer system 110 and the second refrigerant circulating along the heat pump system 120 may be exchanged.

In more detail, the second heat exchanger 180 includes a second heat exchanger transport passage 180A that connects the connection passage 113A and the first transport passage 113B, and a second circulation passage 122 and A second heat exchanger circulating passage 180B connecting the one circulating passage 121 may be included.

The first refrigerant passing through the second heat exchanger transport flow path 180A and the second refrigerant passing through the second heat exchanger circulation flow path 180B may not be mixed with each other, but may be exchanged with each other in a process that flows independently.

For example, the second heat exchanger 180 may be a plate-type heat exchanger formed to be elongated in a direction in which the second heat exchanger transport passage 180A and the second heat exchanger circulation passage 180B cross each other.

As another example, the second heat exchanger 180 may be a double-tube heat exchanger in which one of the second heat exchanger transport passage 180A and the second heat exchanger circulation flow passage 180B surrounds the other circumference.

Meanwhile, the heat pump system 120 may cool or heat the refrigerant flowing along the refrigerant transfer system 110 by circulating the refrigerant. The refrigerant circulating along the heat pump system 120 may be referred to as a second refrigerant.

The heat pump system 120 of the present exemplary embodiment may include a second compressor 140, a second quadrilateral 160, and an expansion mechanism 190.

The second compressor 140 may compress the second refrigerant. The second refrigerant may be sucked into the suction part 142 of the second compressor 140 and discharged to the discharge part 141.

An oil separator may be provided in the discharge part 141 of the second compressor 140.

The second quadrangular side 160 may be connected to the suction part 142 and the discharge part 141 of the second compressor 140. The second quadrant 160 communicates any one of the suction part 142 and the discharge part 141 of the second compressor 140 with the first heat exchanger 170 and the other second heat exchanger 180. Can communicate with.

The first circulation flow path 121 may be connected to the second quadrant 160. The first circulation passage 121 may be selectively communicated with the suction part 142 or the discharge part 141 of the second compressor 140.

The first circulation flow path 121 may be connected to the first heat exchanger 170. In more detail, the first circulation flow path 121 may be connected to the first heat exchanger circulation flow path 170B of the first heat exchanger 170.

The second circulation flow path 122 may connect the second quadrant 160 and the second heat exchanger 180. The second circulation passage 122 may be selectively communicated with the suction part 142 or the discharge part 141 of the second compressor 140.

The third circulation flow path 123 may connect the second heat exchanger 180 and the first heat exchanger 170. In more detail, the third circulation channel 23 may connect the first heat exchanger circulation flow path 170B of the first heat exchanger 170 and the second heat exchanger circulation flow path 180B of the second heat exchanger 180. have.

The expansion mechanism 190 may be installed in the third circulation channel 123. The second refrigerant flowing along the third circulation passage 123 may be expanded while passing through the expansion mechanism 190. The expansion mechanism 190 may include an electronic expansion valve (EEV).

Meanwhile, the refrigerant recovery device 100 according to the present embodiment may be controlled in a recovery mode in which the refrigerant of the target device 2 is recovered and collected in the refrigerant container 5. Hereinafter, the operation of the refrigerant recovery device 100 in the recovery mode will be described.

In the recovery mode, the first oblique side 150 communicates with the suction unit 132 of the first compressor 130 with the second heat exchanger 180 and discharge unit 131 of the first compressor 130 with the first. It can be in communication with the heat exchanger 170. In more detail, the first quadrilateral 150 communicates the suction portion 132 of the first compressor 130 with the first transfer passage 113B, and the discharge portion 131 of the first compressor 130 is the second. It is possible to communicate with the transfer passage 114.

The first refrigerant of the target device 2 may flow through the first extension passage 11 and the connection passage 113A to the second heat exchanger 180 by the suction force of the first compressor 130. In more detail, the first refrigerant may flow into the second heat exchanger transport passage 180A of the second heat exchanger 180.

The first refrigerant passing through the second heat exchanger transfer passage 180A may be heated in heat exchange with the second refrigerant passing through the second heat exchanger circulation passage 180B. That is, the temperature of the second refrigerant passing through the second heat exchanger circulation flow path 180B may be higher than the temperature of the first refrigerant passing through the second heat exchanger transfer flow path 180A.

The first refrigerant heated by the second refrigerant in the second heat exchanger 180 passes through the first transfer passage 113B and the first four sides 150 and the suction portion 132 of the first compressor 130 It can be sucked into and compressed in the first compressor (130).

The first refrigerant compressed by the first compressor 130 and discharged to the discharge part 131 of the first compressor 130 passes through the first four sides 150 and the second transfer passage 114 to exchange the first heat. It may be flowed to the group (170). In more detail, the first refrigerant may flow into the first heat exchanger transport flow path 170A of the first heat exchanger 170.

The first refrigerant passing through the first heat exchanger transport flow path 170A may be cooled by exchanging heat with the second refrigerant passing through the first heat exchanger circulation flow path 170B. That is, the temperature of the second refrigerant passing through the first heat exchanger circulation flow path 170B may be lower than the temperature of the first refrigerant passing through the first heat exchanger transfer flow path 170A.

The first refrigerant cooled by the second refrigerant in the first heat exchanger 170 may be recovered into the refrigerant container 5 by sequentially passing through the third transfer passage 115 and the second extension passage 12. .

Meanwhile, in the recovery mode, the second quadrant 160 communicates the suction portion 142 of the second compressor 140 with the first heat exchanger 170 and the discharge portion 141 of the second compressor 140. It can be in communication with the second heat exchanger (180). In more detail, the second quadrant 160 communicates the suction portion 142 of the second compressor 140 with the first circulation flow path 121 and removes the discharge portion 141 of the second compressor 140. 2 can be in communication with the circulation passage 122.

The second refrigerant compressed by the second compressor 140 and discharged to the discharge part 141 of the second compressor 140 passes through the second four sides 160 and the second circulation passage 122 to exchange the second heat. It may be flowed to the group (180). In more detail, the second refrigerant may flow into the second heat exchanger circulation flow path 180B of the second heat exchanger 180.

The second refrigerant passing through the second heat exchanger circulation flow path 180B may be condensed by exchanging heat with the first refrigerant passing through the second heat exchanger transfer flow path 180A, thereby heating the first refrigerant as described above. You can.

The second refrigerant condensed in the second heat exchanger 180 flows to the third circulation flow path 123, passes through the expansion mechanism 190 and expands, and then flows to the first heat exchanger 170. In more detail, the second refrigerant expanded in the expansion mechanism 190 may flow into the first heat exchanger circulation flow path 170B of the first heat exchanger 170.

The second refrigerant passing through the first heat exchanger circulation flow path (170B) can be evaporated by exchanging heat with the first refrigerant passing through the first heat exchanger transfer flow path (170A), thereby cooling the first refrigerant as described above. You can.

The second refrigerant evaporated from the first heat exchanger 170 may pass through the first circulation passage 121 and the second quadrant 160 and be sucked into the suction part 142 of the second compressor 140.

The second compressor 140 may compress the second refrigerant again and discharge it to the discharge unit 141, and the second refrigerant may circulate the heat pump system 120 along the path described above.

According to the recovery mode of the refrigerant recovery device 1 according to the present embodiment, since the first refrigerant discharged from the first compressor 130 is cooled by the second low-temperature refrigerant in the first heat exchanger 70, conventional air Cooling may be faster than cooling by heat exchange with. Accordingly, the recovery speed of the first refrigerant may be increased and the recovery time may be shortened.

In addition, since the first refrigerant is heated in the second heat exchanger 180 and sucked into the first compressor 130, the efficiency of the first compressor 130 increases and the recovery rate of the first refrigerant can be further increased.

4 is a view showing a flow path of the refrigerant when the refrigerant recovery device according to the second embodiment of the present invention is in an injection mode.

The refrigerant recovery device 100 according to the present embodiment may be controlled in an injection mode in which the refrigerant in the refrigerant container 5 is transferred and injected into the target device 2. Hereinafter, the operation of the refrigerant recovery device 100 in the injection mode will be described.

In the injection mode, the first quadrilateral 150 communicates with the suction unit 132 of the first compressor 130 with the first heat exchanger 170 and the discharge unit 131 of the first compressor 130 with the second It can be in communication with the heat exchanger 180. In more detail, the first quadrilateral 150 communicates the suction portion 132 of the first compressor 130 with the second transfer flow path 114 and the discharge portion 131 of the first compressor 130. It can be communicated with the transfer passage (113B).

The first refrigerant of the refrigerant container (5) by the suction force of the first compressor 130 is the second extension passage (12)? It may flow through the third transfer passage 115 to the first heat exchanger 170. In more detail, the first refrigerant may flow into the first heat exchanger transport flow path 170A of the first heat exchanger 170.

The first refrigerant passing through the first heat exchanger transport flow path 170A may be heated in heat exchange with the second refrigerant passing through the first heat exchanger circulation flow path 170B. That is, the temperature of the second refrigerant passing through the first heat exchanger circulation flow path 170B may be higher than the temperature of the first refrigerant passing through the first heat exchanger transfer flow path 170A.

The first refrigerant heated by the second refrigerant in the first heat exchanger 170, passes through the second transfer passage 114 and the first four sides 150, the suction portion 132 of the first compressor 130 It can be sucked into, and compressed in the first compressor (130).

The first refrigerant compressed in the first compressor 130 may be discharged to the discharge unit 131 of the first compressor 130, and passes through the first four sides 150 and the first transfer passage 113B. 2 may be flowed to the heat exchanger (180). In more detail, the first refrigerant may flow into the second heat exchanger transport passage 180A of the second heat exchanger 180.

The first refrigerant passing through the second heat exchanger transfer passage 180A may be cooled by exchanging heat with the second refrigerant passing through the second heat exchanger circulation passage 180B. That is, the temperature of the second refrigerant passing through the second heat exchanger circulation flow path 180B may be lower than the temperature of the first refrigerant passing through the second heat exchanger transfer flow path 180A.

The first refrigerant heated by the second refrigerant in the first heat exchanger 170 may be sequentially injected through the connecting flow path 113A and the first extension flow path 11 to the target device 2.

Meanwhile, in the injection mode, the second quadrant 160 communicates with the second heat exchanger 180 the suction portion 142 of the second compressor 140 and the discharge portion 141 of the second compressor 140. It can be in communication with the first heat exchanger 170. In more detail, the second quadrilateral 160 communicates the suction portion 142 of the second compressor 140 with the second circulation flow path 122 and removes the discharge portion 141 of the second compressor 140. 1 can be in communication with the circulation passage 121.

The second refrigerant compressed by the second compressor 140 and discharged to the discharge part 141 of the second compressor 140 passes through the second four sides 160 and the first circulation passage 121 to exchange the first heat. It may be flowed to the group (170). In more detail, the second refrigerant may flow into the first heat exchanger circulation flow path 170B of the first heat exchanger 170.

The second refrigerant passing through the first heat exchanger circulation flow path 170B may be condensed by exchanging heat with the first refrigerant passing through the first heat exchanger transfer flow path 170A, thereby heating the first refrigerant as described above. You can.

The second refrigerant condensed in the first heat exchanger 170 flows into the third circulation flow path 123, passes through the expansion mechanism 190 and expands to the second heat exchanger 180. In more detail, the second refrigerant may flow into the second heat exchanger circulation flow path 180B of the second heat exchanger 180.

The second refrigerant passing through the second heat exchanger circulation flow path (180B) can be evaporated by heat exchange with the first refrigerant passing through the second heat exchanger transfer flow path (180A), thereby cooling the first refrigerant as described above. You can.

The second refrigerant evaporated from the second heat exchanger 180 may be sucked through the second circulation passage 122 and the second quadrant 160 to be sucked into the suction part 142 of the second compressor 140.

The second compressor 140 may compress the second refrigerant again and discharge it to the discharge unit 141, and the second refrigerant may circulate the heat pump system 120 along the path described above.

According to the injection mode of the refrigerant recovery device 1 according to the present embodiment, since the first refrigerant discharged from the first compressor 130 is heated by the second high temperature refrigerant in the first heat exchanger 170, the first The refrigerant and the second refrigerant can be directly heat exchanged. That is, compared to the case where the refrigerant container is heated by a heater or the like as in the related art, rapid heating is possible and energy consumption can be reduced. Accordingly, the injection speed of the first refrigerant may be increased and the injection time may be shortened.

In addition, since the first refrigerant discharged from the first compressor 130 is cooled by the second low-temperature refrigerant in the second heat exchanger 180, the recovery speed of the first refrigerant may be further increased.

5 is a block diagram of a refrigerant recovery device according to a third embodiment of the present invention.

Also, FIG. 5 shows a flow path of the refrigerant when the refrigerant recovery device according to the third embodiment of the present invention is in the recovery mode.

The refrigerant recovery device 200 according to the present embodiment may collect the refrigerant from the target device 2 and collect it in the refrigerant container 5 or inject the refrigerant from the refrigerant container 5 into the target device 2. .

The refrigerant recovery device 200 may include a refrigerant transfer system 210 and a heat pump system 220.

The refrigerant transfer system 210 may transfer the refrigerant of the target device 2 and recover it to the refrigerant container 5. The refrigerant transfer system 210 may transfer the refrigerant in the refrigerant container 5 and inject it into the target device 2. The refrigerant transferred along the refrigerant transfer system 210 may be referred to as a first refrigerant.

The refrigerant transfer system 210 of the present embodiment may include a first compressor 230 and a first quadrilateral 250.

The first compressor 230 may compress the first refrigerant. The first refrigerant may be sucked into the suction part 232 of the first compressor 230 and discharged to the discharge part 231.

An oil separator may be provided in the discharge part 231 of the first compressor 230.

The first quadrangular side 250 may be connected to a suction portion 232 and a discharge portion 231 of the first compressor 230. The first oblique side 250 can communicate with any one of the suction unit 232 and the discharge unit 231 of the first compressor 230 with the target device 2 and the other with the refrigerant container 5. have.

The first transfer channel 213 may be connected to the first quadrangular side 250. The first transfer passage 213 may be selectively communicated with the suction part 232 or the discharge part 231 of the first compressor 230.

The first transfer channel 213 may communicate with the target device 2. In more detail, the first transfer channel 213 may be connected to the first extension channel 11 extending to the refrigerant recovery device 1 by being connected to the target device 2.

The second transport flow path 214 may be connected to the first four sides 250. The second transfer passage 214 may be selectively communicated with the suction part 232 or the discharge part 231 of the first compressor 230.

Meanwhile, the heat pump system 220 may circulate the refrigerant to cool or heat the refrigerant in the refrigerant container 5. The refrigerant circulating along the heat pump system 220 may be referred to as a second refrigerant.

The heat pump system 220 of the present embodiment may include a second compressor 240, a second quadrilateral 260, a first heat exchanger 270, a second heat exchanger 280, and an expansion mechanism 290. have.

The second compressor 240 may compress the second refrigerant. The second refrigerant may be sucked into the suction part 242 of the second compressor 240 and discharged to the discharge part 241.

An oil separator may be provided at the discharge part 241 of the second compressor 240.

The second quadrangular side 260 may be connected to a suction portion 242 and a discharge portion 241 of the second compressor 240. The second quadrangular side 260 communicates with one of the suction part 242 and the discharge part 241 of the second compressor 240 with the first heat exchanger 270 and the other with the second heat exchanger 280. Can communicate with.

The first circulation channel 221 may connect the second quadrangular side 260 and the first heat exchanger 270. The first circulation passage 221 may be selectively communicated with the suction part 242 or the discharge part 241 of the second compressor 240.

The second circulation channel 222 may connect the second quadrangular side 260 and the second heat exchanger 280. The second circulation passage 222 may be selectively communicated with the suction part 242 or the discharge part 241 of the second compressor 240.

The third circulation flow path 223 may connect the second heat exchanger 280 and the first heat exchanger 270.

The first heat exchanger 270 may be disposed in the refrigerant container 5. In the first heat exchanger 170, the first refrigerant contained in the refrigerant container 5 and the second refrigerant circulating along the heat pump system 120 may be exchanged.

The second heat exchanger 280 may condense or evaporate the second refrigerant. The second heat exchanger 280 may exchange heat blown by the blowing fan 280A with the second refrigerant. However, the present invention is not limited thereto, and the second heat exchanger 280 may be configured in a water-cooling type.

The expansion mechanism 290 may be installed in the third circulation channel 223. The second refrigerant flowing along the third circulation flow path 223 may be expanded while passing through the expansion mechanism 290. The expansion mechanism 290 may include an electronic expansion valve (EEV).

Meanwhile, the refrigerant recovery device 200 according to the present embodiment may be controlled in a recovery mode in which the refrigerant of the target device 2 is recovered and collected in the refrigerant container 5. Hereinafter, the operation of the refrigerant recovery device 200 in the recovery mode will be described.

In the recovery mode, the first quadrant 250 communicates the suction unit 232 of the first compressor 230 with the target device 2 and the discharge unit 231 of the first compressor 230 to the refrigerant container 5 ). In more detail, the first quadrant 250 communicates the suction portion 232 of the first compressor 230 with the first transfer passage 213 and the discharge portion 231 of the first compressor 230. It is possible to communicate with the transfer passage 214.

By the suction force of the first compressor 230, the first refrigerant of the target device 2 sequentially passes through the first extended flow path 11, the first transfer flow path 213, and the first four sides 250 and is first. It may be sucked into the suction part 232 of the compressor 230 and compressed in the first compressor 230.

The first refrigerant compressed by the first compressor 230 and discharged to the discharge part 231 of the first compressor 230 passes through the first four sides 250 and the second transfer passage 214 to form a refrigerant container ( 5).

The refrigerant container 5 may be cooled by the first heat exchanger 270. That is, the temperature of the second refrigerant passing through the first heat exchanger 270 may be lower than the temperature of the first refrigerant flowing into the refrigerant container 5.

Meanwhile, in the recovery mode, the second quadrant 260 communicates the suction portion 242 of the second compressor 240 with the first heat exchanger 270 and the discharge portion 241 of the second compressor 240. It can be in communication with the second heat exchanger (280). In more detail, the second quadrilateral 260 communicates the suction portion 242 of the second compressor 240 with the first circulation channel 221, and removes the discharge portion 241 of the second compressor 240. 2 can be communicated with the circulation passage (222).

The second refrigerant compressed by the second compressor 240 and discharged to the discharge part 241 of the second compressor 240 passes through the second four sides 260 and the second circulation passage 222 to exchange the second heat. It can be flowed to the group 280.

The second refrigerant flowing into the second heat exchanger 280 may be condensed by exchanging heat with the air flowed by the blowing fan 280A.

The second refrigerant condensed in the second heat exchanger 280 flows to the third circulation flow path 223, passes through the expansion mechanism 290 and expands, and then flows to the first heat exchanger 270.

The second refrigerant flowing into the first heat exchanger 270 may be evaporated by exchanging heat with the first refrigerant contained in the refrigerant container 5, whereby the first refrigerant may be cooled as described above.

The second refrigerant evaporated from the first heat exchanger 270 may pass through the first circulation flow path 221 and the second four sides 260 and be sucked into the suction unit 242 of the second compressor 240.

The second compressor 240 may compress the second refrigerant again and discharge it to the discharge unit 241, and the second refrigerant may circulate the heat pump system 220 along the path described above.

According to the recovery mode of the refrigerant recovery device 200 according to the present embodiment, since the first refrigerant in the refrigerant container is cooled by the second low-temperature refrigerant passing through the first heat exchanger 270, the recovery rate of the first refrigerant Can be faster. In addition, the cooling rate of the first refrigerant is faster than that of cooling the first refrigerant by exchanging heat with air.

6 is a view showing a flow path of the refrigerant when the refrigerant recovery device according to the third embodiment of the present invention is in the injection mode.

The refrigerant recovery device 200 according to the present embodiment may be controlled in an injection mode in which the refrigerant in the refrigerant container 5 is transferred and injected into the target device 2. Hereinafter, the operation of the refrigerant recovery device 200 in the injection mode will be described.

In the injection mode, the first quadrant 250 communicates the suction portion 232 of the first compressor 230 with the refrigerant container 5 and the discharge portion 231 of the first compressor 230 to the target device (2) ). In more detail, the first quadrilateral 250 communicates the suction portion 232 of the first compressor 230 with the second transfer flow path 214 and the discharge portion 231 of the first compressor 230. It can be communicated with the transfer passage 213.

The first refrigerant contained in the refrigerant container 5 may be heated by the first heat exchanger 270. That is, the temperature of the second refrigerant passing through the first heat exchanger 270 may be higher than the temperature of the first refrigerant contained in the refrigerant container 5.

The first refrigerant of the refrigerant container (5) by the suction force of the first compressor (230) passes through the second extension passage (12), the second conveyance passage (214) and the first four sides (250), the first compressor ( It is sucked into the suction unit 232 of 230, it may be compressed in the first compressor (230).

The first refrigerant compressed in the first compressor 230 may be discharged to the discharge part 231 of the first compressor 230, the first four sides 250, the first transport flow path 213 and the first extension The flow path 11 may be sequentially passed to be injected into the target device 2.

Meanwhile, in the injection mode, the second quadrilateral 260 communicates the suction portion 242 of the second compressor 240 with the second heat exchanger 280 and the discharge portion 241 of the second compressor 240. It can be in communication with the first heat exchanger (270). In more detail, the second quadrilateral 260 communicates the suction portion 242 of the second compressor 240 with the second circulation passage 222, and removes the discharge portion 241 of the second compressor 240. 1 can be in communication with the circulation passage (221).

The second refrigerant compressed by the second compressor 240 and discharged to the discharge part 241 of the second compressor 240 passes through the second four sides 260 and the first circulation passage 221 to exchange the first heat. It can be flowed to the group (270).

The second refrigerant flowing into the first heat exchanger 270 may be condensed by exchanging heat with the first refrigerant contained in the refrigerant container 5, whereby the first refrigerant may be heated as described above.

The second refrigerant condensed in the first heat exchanger 270 flows to the third circulation flow path 223, passes through the expansion mechanism 290 and expands, and then flows to the second heat exchanger 280.

The second refrigerant flowed to the second heat exchanger 280 may be evaporated while exchanging heat with the air flowed by the blowing fan 280A.

The second refrigerant evaporated from the second heat exchanger 280 may be sucked into the suction unit 242 of the second compressor 240 through the second circulation passage 222 and the second quadrant 260.

The second compressor 240 may compress the second refrigerant again and discharge it to the discharge unit 241, and the second refrigerant may circulate the heat pump system 220 along the path described above.

According to the recovery mode of the refrigerant recovery device 200 according to the present embodiment, since the first refrigerant in the refrigerant container is heated by the high temperature second refrigerant passing through the first heat exchanger 270, the first compressor 230 Can improve the efficiency and speed of injection of the first refrigerant.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (12)

A refrigerant transfer system for recovering the first refrigerant from the target device to the refrigerant container or injecting the refrigerant into the target device; And
It includes a heat pump system for circulating the second refrigerant for heating or cooling the first refrigerant,
The refrigerant transfer system,
A first compressor compressing the first refrigerant;
A first heat exchanger in communication with the refrigerant container and exchanging the first refrigerant and the second refrigerant; And
And a first quadrangle communicating one of the suction and discharge portions of the first compressor with the target device and the other with the first heat exchanger.
The heat pump system,
A second compressor compressing the second refrigerant;
A second heat exchanger in which the second refrigerant is condensed or evaporated and connected to the first heat exchanger and a circulation passage; And
A refrigerant recovery device including a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger. According to claim 1,
The heat pump system,
The refrigerant recovery device further includes an expansion mechanism installed in the circulation passage and the second refrigerant expanded. According to claim 1,
In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container,
The first quadrilateral communicates the suction portion of the first compressor with the target device and the discharge portion of the first compressor with the first heat exchanger,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the first heat exchanger and communicating the discharge portion of the second compressor with the second heat exchanger. According to claim 1,
In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device,
The first quadrilateral communicates the suction portion of the first compressor with the first heat exchanger and the discharge portion of the first compressor with the target device,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the second heat exchanger and communicating the discharge portion of the second compressor with the first heat exchanger. A refrigerant transfer system for recovering the first refrigerant from the target device to the refrigerant container or injecting the refrigerant into the target device; And
It includes a heat pump system for circulating the second refrigerant for heating or cooling the first refrigerant,
The refrigerant transfer system,
A first compressor compressing the first refrigerant;
A first heat exchanger in communication with the refrigerant container and exchanging the first refrigerant and the second refrigerant;
A second heat exchanger communicating with the target device and exchanging the first refrigerant and the second refrigerant; And
And a first quadrilateral communicating one of the suction and discharge portions of the first compressor with the first heat exchanger and the other with the second heat exchanger,
The heat pump system,
A second compressor compressing the second refrigerant;
A circulation flow path connecting the first heat exchanger and the second heat exchanger; And
A refrigerant recovery apparatus including a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger. The method of claim 5,
The heat pump system,
The refrigerant recovery device further includes an expansion mechanism installed in the circulation passage and the second refrigerant expanded. The method of claim 5,
In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container,
The first quadrilateral, the suction portion of the first compressor communicates with the second heat exchanger, and the discharge portion of the first compressor communicates with the first heat exchanger,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the first heat exchanger and communicating the discharge portion of the second compressor with the second heat exchanger. The method of claim 5,
In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device,
The first four sides, the suction portion of the first compressor communicates with the first heat exchanger and the discharge portion of the first compressor communicates with the second heat exchanger,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the second heat exchanger and communicating the discharge portion of the second compressor with the first heat exchanger. A refrigerant transfer system for recovering the first refrigerant from the target device to the refrigerant container or injecting the refrigerant into the target device; And
It includes a heat pump system for circulating the second refrigerant for heating or cooling the first refrigerant,
The refrigerant transfer system,
A first compressor compressing the first refrigerant; And
And a first quadrangle communicating one of the suction and discharge portions of the first compressor with the target device and the other with the refrigerant container.
The heat pump system,
A second compressor compressing the second refrigerant;
A first heat exchanger disposed in the refrigerant container;
A second heat exchanger in which the second refrigerant is condensed or evaporated and connected to the first heat exchanger and a circulation passage; And
A refrigerant recovery device including a second quadrilateral communicating one of the suction and discharge portions of the second compressor with the first heat exchanger and the other with the second heat exchanger. The method of claim 9,
The heat pump system,
The refrigerant recovery device further includes an expansion mechanism installed in the circulation passage and the second refrigerant expanded. The method of claim 9,
In the recovery mode in which the first refrigerant is recovered from the target device to the refrigerant container,
The first four sides, the suction portion of the first compressor communicates with the target device and the discharge portion of the first compressor communicates with the refrigerant container,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the first heat exchanger and communicating the discharge portion of the second compressor with the second heat exchanger. The method of claim 9,
In the injection mode in which the first refrigerant is injected from the refrigerant container to the target device,
The first quadrilateral communicates the suction portion of the first compressor with the refrigerant container and the discharge portion of the first compressor with the target device,
The second quadrant is a refrigerant recovery device for communicating the suction portion of the second compressor with the second heat exchanger and communicating the discharge portion of the second compressor with the first heat exchanger.

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