KR0115192Y1 - Airconditioning cycle apparatus - Google Patents

Abstract

The present invention relates to a cooling and heating cycle device that can selectively perform the cooling and heating.

The present invention, in turn, the compressor 10 and the first heat exchanger 20 and the second heat exchanger 30, the first reducer 40 and the second reducer disposed between the first heat exchanger and the second heat exchanger (50) In the cooling and heating cycle apparatus having a four-way valve (60) for selectively switching the flow direction of the refrigerant from the compressor in accordance with the cooling or heating, the four-way valve (60) is a normal body 61 and the inside of the body A sliding piston 62 and a slider 63 which slides together with the piston to flow the refrigerant to the first heat exchanger 20 or the second heat exchanger 30 in accordance with cooling or heating. A coolant inlet 71 and an outlet 72 are formed, and a check valve 73 is provided in the piston to open the coolant inlet and outlet when cooling and close it when heating.

Description

Air Conditioning Cycle System

1 is a cycle configuration diagram of a conventional heating and cooling device.

2 is a cycle configuration diagram of a heating and cooling device according to the present invention.

3 is an operating state of the cooling of the four-way valve employed in the present invention.

4 is an operating state diagram when heating the four-way valve employed in the present invention.

* Explanation of symbols for main parts of the drawings

10: compressor 20: first heat exchanger

30: second heat exchanger 60: four-way valve

61: main body 62: piston

71: refrigerant inlet 72: refrigerant outlet

73: check valve

The present invention relates to a cooling and heating cycle device, and more specifically to a four-way valve for switching the refrigerant flow direction for cooling or heating to check valve (CHECK VALVE) to prevent the refrigerant flow in one direction The present invention relates to a cooling / heating cycle apparatus having a multifunctional four-way valve capable of performing multifunction by structurally integrating.

The configuration of a conventional heating and cooling air conditioner capable of selectively performing cooling and heating and a cooling / heating cycle apparatus employed in the application thereof is as shown in FIG. That is, the compressor 1, the outdoor side heat exchanger 2, the capillary tube 3, the expansion valve 4, and the indoor side heat exchanger 5 are sequentially connected by a refrigerant pipe to perform a refrigeration cycle device. In addition, the four-way valve (6) is provided to selectively switch the flow direction of the refrigerant from the compressor (1) in accordance with the cooling and heating, and the check valve (7) and expansion valve (3) to prevent the refrigerant from flowing in the reverse direction Installed in parallel.

In the cooling and heating cycle apparatus configured as described above, cooling and heating are selectively performed. First, the flow of the refrigerant during cooling is as follows. When cooling, the refrigerant flows as indicated by the solid arrows. The refrigerant from the compressor 1 passes through the four-way valve 6 and passes through the outdoor heat exchanger 2 to exchange heat with the ambient air, and After depressurizing while passing through, it passes through the check valve 7 and enters the indoor heat exchanger 5. The low pressure refrigerant passing through the check valve (7) is evaporated while passing through the indoor heat exchanger (5) to absorb heat from the surrounding air to cool the air, and then enter the compressor (1) through the four-way valve (6) again. .

On the contrary, during heating, the refrigerant from the compressor (1) is switched in four-way valve (6) to flow through the indoor heat exchanger (5) to perform heating and to expand the expansion valve (4) and the capillary tube (3). It enters into the outdoor heat exchanger (2).

At this time, the check valve 7 serves to allow the refrigerant to pass through the expansion valve 4 without passing through it. The refrigerant decompressed through the expansion valve (4) and the capillary tube (3) enters the compressor (1) again through the outdoor heat exchanger (5) and the four-way valve (5).

However, in the conventional air-conditioning cycle apparatus, the four-way valve and the check valve are separate components, so that the space occupied on the set is not only large, but also complicated.

The present invention is to solve the above problems, an object of the present invention is to provide a compact and compact size of the product and at the same time the cooling and heating cycle device having a multi-function four-way valve consisting of a check valve and a four-way valve that can simplify the structure To provide.

The present invention for achieving the above object is, the compressor and the first heat exchanger and the second heat exchanger, which are in turn connected by a refrigerant pipe, the first reducer and the second reducer disposed between the first heat exchanger and the second heat exchanger, A cooling and heating cycle apparatus having a four-way valve for selectively switching the flow direction of the refrigerant so that the refrigerant from the compressor flows to the first heat exchanger or the second heat exchanger side in accordance with cooling or heating. It is characterized in that it is further provided with a check valve to allow the flow of refrigerant and block the flow of refrigerant during heating.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the heating and cooling cycle device according to the present invention.

2 is a cycle configuration diagram of a cooling and heating cycle apparatus according to the present invention.

As shown in the drawing, the subject innovation consists of a compressor 10, a first heat exchanger 20 as an outdoor side heat exchanger, and a second heat exchanger 30 as an indoor side heat exchanger connected in sequence by a refrigerant pipe. Between the first heat exchanger 20 and the second heat exchanger 30, a capillary tube 40, which is a first reducer, and an expansion valve 50, which is a second reducer, are installed. In addition, the four-way valve 60 for flowing the refrigerant from the compressor 10 to the first heat exchanger 20 side during cooling and to the second heat exchanger 30 side during heating is provided with a refrigerant discharge pipe ( 11) and the suction pipe 12 is installed.

3 and 4, the four-way valve 60 is shown as a characteristic element of the present invention. Referring to this, the four-way valve 60 is a normal body 61, the piston 62 sliding the inside of the main body 61, and the sliding together with the piston 62 to cool the refrigerant according to the cooling or heating And a slider 63 for selectively switching its flow direction so as to flow toward the first heat exchanger 20 or the second heat exchanger 30. The piston 62 is composed of two spaced apart by a predetermined interval and is connected by a piston rod (64). The slider 63 is coupled to this piston rod 64 and slides together. The piston 62 and the slider 63 are slid left and right by the magnetic force generated by the operation of the solenoid coil (not shown) as in the prior art.

A suction port 65 and a discharge port 66 are formed on the side wall of the main body 61 to allow the refrigerant to be sucked and discharged between the compressor 10, and they are preferably formed on opposite sides. The first outlet opening 67 and the second outlet opening and closing on both sides of the discharge port 66 by the slider 63 to selectively allow the refrigerant to flow in and out between the first heat exchanger 20 or the second heat exchanger 30. Inlet 68 is formed. The first outlet port 67 allows the refrigerant to flow in and out between the first heat exchanger 20, which is an outdoor heat exchanger, and the second outlet port 68, with the second heat exchanger 30, which is an indoor heat exchanger. The refrigerant is to flow in and out between. Therefore, during cooling, the refrigerant enters from the second heat exchanger 30 through the second outlet inlet 68, is guided by the slider 63, and then exits toward the compressor 10 through the outlet 66. The refrigerant enters from the first heat exchanger 20 through the first outlet port 67, is guided by the slider 63, and then exits through the outlet port 66 toward the compressor 10.

According to a feature of the present invention, one end of the main body 61 is formed with a refrigerant inlet 71 and an outlet 72. The refrigerant inlet 71 is connected to the capillary tube 40, and the refrigerant outlet 72 is connected to the second heat exchanger 30, which is an indoor heat exchanger.

As shown in FIG. 2, the expansion valve 50 connects a refrigerant pipe connecting the refrigerant inlet 71 and the capillary tube 40 with a refrigerant pipe connecting the refrigerant outlet 72 and the second heat exchanger 30. And the refrigerant inlet 71 and outlet 72 are in parallel relationship with the refrigerant flow path.

In addition, a check valve 73 for opening and closing the refrigerant inlet 71 and the outlet 72 is provided at the piston 62 on the side where the refrigerant inlet 71 and the outlet 72 are formed. The check valve 73 is formed to protrude in the form of a protrusion on the outer surface of the piston 62 to open the refrigerant inlet 71 and the outlet 72 during cooling, and the refrigerant inlet 71 and the outlet 72 during heating. Close it.

Referring to the operation of the cooling and heating cycle apparatus according to the present invention configured as described as follows.

First, the operation during cooling will be described with reference to FIGS. 2 and 3.

The refrigerant compressed by the compressor 10 is discharged through the refrigerant discharge pipe 11 and introduced into the four-way valve 60 through the refrigerant inlet 65 of the four-way valve 60.

At this time, since the piston 62 and the slider 63 are moved to the right side of the drawing by the operation of the solenoid, the first outlet inlet 67, the refrigerant inlet 71, and the outlet 72 are open. The refrigerant introduced into the four-way valve 60 is introduced into the first heat exchanger 20, which is an outdoor heat exchanger, through the open first outlet inlet 67. The refrigerant heat-exchanged in the first heat exchanger 20 is depressurized through the capillary tube 40 and flows into the four-way valve 60 again through the refrigerant inlet 71. In this case, the four-way valve 60 has a left piston 62. Since a certain space is formed by), the refrigerant flows into this portion and flows out through the outlet 72.

The refrigerant flowing out of the four-way valve 60 enters the second heat exchanger 30, which is an outdoor heat exchanger, heat exchanges, and then flows into the four-way valve 60 through the second outlet inlet 68. The refrigerant introduced in this way is guided by the slider 63 and discharged through the discharge port 66 to enter the compressor 10 to perform one cycle. As this cycle continues, cooling air is performed since cold air is generated in the second heat exchanger 30. The solid arrow in FIG. 2 shows the refrigerant flow when cooling.

Next, the operation during heating will be described with reference to FIGS. 2 and 4.

The refrigerant compressed by the compressor 10 is discharged through the refrigerant discharge pipe 11 and introduced into the four-way valve 60 through the refrigerant inlet 65 of the four-way valve 60.

At this time, since the piston 62 and the slider 63 are moved to the left side of the drawing yarn by the operation of the solenoid as opposed to the cooling time, the second inlet and outlet 68 are opened, and the refrigerant inlet 71 and the outlet 72 are the check valve 73. Closed by).

The refrigerant introduced into the four-way valve 60 is introduced into the second heat exchanger 30, which is an indoor side heat exchanger, through the open second outlet inlet 68. The refrigerant heat exchanged in the second heat exchanger 30 is decompressed while passing through the expansion valve 50 and the capillary tube 40. At this time, the check valve 73 blocking the coolant inlet 71 and the coolant outlet 72 prevents the coolant from flowing therein and flows toward the expansion valve 50.

The pressure-reduced refrigerant is heat-exchanged while passing through the first heat exchanger (20), and then flows back into the four-way valve (60) through the first outlet (67) and is discharged through the outlet (66) to be sucked back into the compressor (10). To perform the cycle.

As this cycle continues, the warm air is generated in the first heat exchanger 30 so that heating is performed. The dashed arrows in FIG. 2 indicate the refrigerant flow during heating.

In this embodiment, the coolant inlet and outlet are formed at one end of the left side of the main body, and the check valve is also configured to be provided at the left piston.

As described in detail above, the cooling and heating cycle apparatus according to the present invention has the advantage that the compact and structure of the set can be achieved by integrating the check valve with the conventional four-way valve disposed in separate positions as a separate component. That is, the refrigerant inlet and outlet are formed on one side of the four-way valve main body, and a check valve is provided on the piston so that the check valve selectively opens and closes the refrigerant inlet and the outlet in accordance with cooling or heating. Will

Claims (1)

Compressors connected in turn by a refrigerant pipe, a first heat exchanger and a second heat exchanger, a first reducer and a second reducer disposed between the first heat exchanger and the second heat exchanger, and the refrigerant from the compressor is cooled or cooled. And a four-way valve for selectively switching the refrigerant flow direction to flow toward the first heat exchanger or the second heat exchanger, wherein the four-way valve has a tubular body and a suction port for guiding refrigerant to be sucked into the body from the compressor; A discharge port for guiding the refrigerant to be discharged to the compressor from the main body, two outlets arranged between the discharge port, a piston sliding inside the main body, and a piston sliding along the piston to cool and heat the discharge port; A slider for selectively communicating with any one of the two outlets to switch the flow direction of the refrigerant In the cooling and heating cycle device provided, the four-way valve is formed in the main body 61, during cooling, the thermal refrigerant is bypassed in the middle of the first reducer 40 and the second reducer 50 After flowing into the main body (61), it is guided to flow toward the second heat exchanger (30), and closed during heating, and the refrigerant passes through the second reducer (50) and the first reducer (40) in turn. It is provided in the refrigerant inlet 71 and the outlet 72 and the piston 62 to flow to the first heat exchanger 20, and the inlet 71 and the outlet 72 are opened at the time of cooling and the inlet at the time of heating. Cooling and heating cycle apparatus comprising a check valve (73) for closing the 71 and the outlet (72).