KR200363573Y1 - A heating and cooling system for a fresh gas separator - Google Patents

Abstract

The present invention relates to a cooling and heating system to which a fresh gas separation device is applied, an expander (1) for expanding a refrigerant in an insulated state, an indoor unit (2) having a heat exchanger, a compressor (3) for compressing the refrigerant in an insulated state, and It consists of an outdoor unit (4) having a heat exchanger, condensation of the refrigerant gas of the high temperature and high pressure compressed by the compressor (3) in the indoor unit (2), and the refrigerant liquid condensed in the indoor unit (2) in the expander (1) And a housing (5) in which the liquid refrigerant accumulates between the expander (1) and the outdoor unit (evaporator) 4 while being expanded and sucked by the compressor 3 after evaporating in the outdoor unit 4, A gas inlet pipe 6 for introducing fresh gas in the center of the housing 5 is installed in a vertical state, and a pure liquid refrigerant may be supplied to an outdoor unit (evaporator) 4 at a lower side of the housing 5. Liquid refrigerant recovery passage (7) As a tank, it is possible to increase the amount of the outdoor unit by suppressing the fresh gas flowing into the outdoor unit (evaporator) through the fresh gas separator, and to improve the heat exchange efficiency by supplying pure liquid refrigerant to the outdoor unit (evaporator). .

Description

Heating and cooling system with fresh gas separator {A heating and cooling system for a fresh gas separator}

The present invention relates to a cooling and heating system using a fresh gas separation device. In particular, the fresh gas contained in the liquid refrigerant is completely separated before the liquid refrigerant flows into the evaporator, thereby supplying a pure liquid refrigerant to the evaporator to increase the heat exchange effect. The present invention relates to a cooling and heating system in which a fresh gas separator is applied to stabilize the entire system.

In general, the heating cycle is a high-temperature, high-pressure, gaseous refrigerant flows into the indoor unit to condense and release heat to the room, and the refrigerant discharged from the indoor unit is expanded to low temperature and low pressure in the expander and discharged to the outdoor unit, and the outdoor unit is introduced The low temperature low pressure refrigerant is evaporated to extract heat from the outside and discharged to the compressor, and the compressor compresses the refrigerant to high temperature and high pressure and introduces it into the indoor unit.

However, since a fresh gas is introduced into the outdoor unit (evaporator) to lower the evaporation efficiency, a heat exchange effect is reduced, and a separate system capable of removing the fresh gas contained in the low temperature and low pressure liquid refrigerant passing through the expander on the heating circuit is provided. There was no problem.

On the other hand, in the outdoor unit acting as the evaporator is not enough evaporation of the refrigerant liquid is sucked into the compressor in the wet refrigerant vapor state occurs liquid back phenomenon, the refrigerant is evaporated in the cylinder of the compressor expands while the efficiency is reduced, In some cases, the liquid separator may be damaged and the compressor may be damaged. Thus, a liquid separator is installed between the outdoor unit and the compressor to prevent refrigerant liquid from being sucked into the compressor.

However, there exists a method of forming a heating fluid chamber in the liquid separator and heating it to vaporize it, which requires another external energy.

The present invention has been devised in view of the above-mentioned circumstances. Before the liquid refrigerant flows into the evaporator, the fresh gas contained in the liquid refrigerant is completely separated and a pure liquid refrigerant is supplied to the evaporator to increase the heat exchange effect. In addition, the purpose of the present invention is to provide a cooling and heating system with a fresh gas separator that can stabilize the entire system.

The present invention for achieving the above object is composed of an expander for expanding the refrigerant in a thermal insulation state, an indoor unit having a heat exchanger, a compressor for compressing the refrigerant in the thermal insulation state, and an outdoor unit having a heat exchanger, A cooling and heating system configured to condense a compressed high-temperature, high-pressure refrigerant gas in an indoor unit, expand the refrigerant liquid condensed in the indoor unit in the expander, and form a circulation cycle that is evaporated in the outdoor unit and sucked into the compressor. A housing is installed between the inflator and the outdoor unit (evaporator) to accumulate liquid refrigerant, and a gas inlet pipe for introducing a fresh gas in the center of the housing is installed in a vertical state, and a pure liquid refrigerant is disposed at one lower side of the housing. It is a structure installed with a liquid refrigerant recovery passage that can be supplied to an outdoor unit (evaporator).

In addition, a thermal accelerator composite circuit is formed between the expander and the indoor unit, and a circuit SV-4 having a bypass structure at the outlet of the compressor is connected to the indoor unit, and a circuit having the bypass structure SV-. The bypass expansion valve is installed in 4) to prevent the liquid refrigerant from flowing into the compressor by increasing the compressor suction temperature through the heat promotion of the heat promotion composite circuit.

Therefore, by suppressing the fresh gas flowing into the outdoor unit (evaporator) through the fresh gas separator, the amount of the outdoor unit can be increased, and the heat exchange efficiency can be improved by supplying pure liquid refrigerant to the outdoor unit (evaporator). When the outside air temperature is lowered by the air conditioning system, the preheating function in the thermal accelerator composite circuit is increased, and the temperature of the refrigerant in the outlet of the thermal accelerator is increased, and the inlet temperature of the compressor is decreased by the rise of the compressor suction temperature. The overall heating system is stable and the temperature can be raised.

1 is a block diagram showing a cooling and heating system to which the fresh gas separation apparatus according to the present invention is applied,

Figure 2 is a state diagram showing a fresh gas separator device according to the present invention,

Figure 3 is a block diagram showing a state in which a circuit for preventing liquid refrigerant compressor inflow is applied to the heating and cooling system according to the present invention.

Explanation of symbols on the main parts of the drawings

1: expander 2: indoor unit

3: compressor 4: outdoor unit

5 housing 6 gas inlet pipe

7: liquid refrigerant recovery passage 8: fresh gas separator

9: heat promoting composite circuit 10: bypass expansion valve

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a heating and cooling system is applied fresh gas separation apparatus according to the present invention, Figure 2 is a state diagram showing a fresh gas separation apparatus device according to the present invention, Figure 3 is a heating and cooling system according to the present invention It is a block diagram which shows the state to which the liquid refrigerant compressor inflow prevention circuit was applied.

Referring to the configuration of the present invention by the above drawings, the expander (1) for expanding the refrigerant in a heat insulating state, the indoor unit (2) having a heat exchanger, the compressor (3) for compressing the refrigerant in a heat insulating state, and heat exchange And an outdoor unit (4) having a group, condensing the refrigerant gas of high temperature and high pressure compressed by the compressor (3) in the indoor unit (2), and expanding the refrigerant liquid condensed in the indoor unit (2) in the expander (1). And a housing (5) in which a liquid refrigerant accumulates between the expander (1) and the outdoor unit (evaporator) 4 while forming a circulating cycle which is sucked into the compressor 3 after evaporating in the outdoor unit 4. Is installed, the gas inlet pipe 6 for introducing the fresh gas in the center of the housing 5 is installed in a vertical state, the pure water liquid refrigerant in the lower side of the housing 5 outdoor unit (evaporator) ( 4) the liquid refrigerant recovery passage (7) provided for supplying Structure.

Here, the fresh gas separator 8 having the above structure is a device for blocking the introduction of the fresh gas into the outdoor unit (evaporator) 4 before the liquid refrigerant flows into the outdoor unit (evaporator) 4, the expander ( The fresh gas separator 8 is installed between 1) and the outdoor unit (evaporator) 4 so that the liquid refrigerant accumulates in the housing 5 of the fresh gas separator 8.

That is, the liquid refrigerant supplied from the expander 1 passes through the fresh gas separator 8 to separate the gas contained in the liquid refrigerant into the gas inlet pipe 6, and thus the pure liquid from which the gas is separated. The refrigerant is supplied to the outdoor unit (evaporator) 4 through the liquid refrigerant recovery passage 7.

Therefore, the fresh gas is completely separated before the outdoor unit (evaporator) 4 is introduced into the liquid refrigerant through the fresh gas separator 8, and the pure liquid refrigerant is supplied to the outdoor unit (evaporator) 4 so that the heat exchange (evaporation) effect is improved. As a result, the heat exchange effect of approximately 3 ° C. is increased after installation of the fresh gas separator 8.

On the other hand, when the circuit for preventing liquid refrigerant compressor inflow is added to the air-conditioning system to which the fresh gas separator 8 is applied, as shown in FIG. 3, a thermal acceleration complex circuit between the expander 1 and the indoor unit 2 ( 9), a circuit SV-4 having a bypass structure at the outlet of the compressor 3 is connected to the indoor unit 2, and bypassed to the circuit SV-4 having the bypass structure. Pass expansion valve 10 is installed to increase the suction temperature of the compressor (3) through the heat promotion of the heat promoting composite circuit (9) to prevent the liquid refrigerant flow into the compressor (3).

Here, the cooling and heating system for preventing the refrigerant entering the liquid refrigerant compressor having the above structure is characterized in that it comprises a bypass expansion valve 10 for optimizing the system according to the bypass on the circuit (SV-4) and the temperature and pressure of the system. It is to be done.

Therefore, the cooling and heating system increases the preheating function of the heat promoting composite circuit 9 when the outside air temperature decreases, so that the temperature of the refrigerant exiting the heat promoting composite circuit 9 rises approximately 4 ° C. It is to increase the suction temperature of the compressor (3).

Here, the air conditioner using the air-conditioning system to which the fresh gas separator 8 is applied, first, the refrigerant in a low pressure gas state is compressed in the compressor (3), and then the indoor unit (condenser) 2 in a high temperature and high pressure steam state. The refrigerant is condensed into the liquid phase by releasing heat, and the condensed refrigerant expands under reduced pressure in the expander (1) while passing through the heat promoting composite circuit (9) and is supplied to the outdoor unit (evaporator) 4. As the refrigerant is evaporated by absorbing heat from the outside in the outdoor unit (evaporator) 4, the refrigerant is returned to the compressor 3 again.

In addition, the heating apparatus using the air-conditioning system to which the fresh gas separator 8 is applied, first, the bypass circuit SV- in the process of delivering the refrigerant discharged from the indoor unit 2 to the heat promoting composite circuit 9. The bypass expansion valve 10 of 4) operates to increase the preheating function in the heat promoting composite circuit 9 when the outside temperature decreases, thereby raising the temperature of the refrigerant exiting the heat promoting composite circuit 9, and thus increasing the temperature. Supplied refrigerant flows into the expander (1), and the liquid refrigerant flows into the outdoor unit (evaporator) 4 through the fresh gas separator 8 installed between the expander 1 and the outdoor unit (evaporator) 4. Before the fresh gas is completely separated, pure liquid refrigerant is supplied to the outdoor unit (evaporator) 4.

Therefore, the temperature of the refrigerant flowing into the outdoor unit (evaporator) 4 through the fresh gas separator 8 may be reduced and the generation of fresh gas may be suppressed to increase the efficiency of the system, and the compressor may be promoted through heat promotion. By increasing the suction temperature of (3) it is possible to minimize the introduction of liquid refrigerant into the compressor (3).

As described above, according to the air-conditioning system to which the fresh gas separator according to the present invention is applied, the amount of the outdoor unit can be increased by suppressing the fresh gas flowing into the outdoor unit (evaporator), and the pure liquid refrigerant is converted into the outdoor unit (evaporator). By supplying the heat exchange efficiency can be improved, the temperature of the heat-promoting composite circuit outlet refrigerant is increased by the increase in the preheating function in the heat-promoting composite circuit when the outside air temperature is lowered by the air-conditioning system, and the temperature of the compressor suction temperature through the heat promotion Increasing the flow of compressor liquid refrigerant is reduced, and the overall heating system is stabilized, and the temperature can be raised.

Claims (2)

The compressor (3) includes an expander (1) for expanding the refrigerant in an adiabatic state, an indoor unit (2) having a heat exchanger, a compressor (3) for compressing the refrigerant in an adiabatic state, and an outdoor unit (4) having a heat exchanger. Condensed in the indoor unit (2), the refrigerant liquid condensed in the indoor unit (2) is expanded in the expander (1), and evaporated in the outdoor unit (4), and then the compressor ( In the heating and cooling system configured to form a circulation cycle that is sucked into 3), Between the inflator 1 and the outdoor unit (evaporator) 4, a housing 5 in which liquid refrigerant accumulates is installed, and a gas inlet pipe 6 for introducing fresh gas into the center of the housing 5 is vertical. And a fresh gas recovery device, characterized in that the liquid refrigerant recovery passage 7 is provided at one lower side of the housing 5 to supply the pure liquid refrigerant to the outdoor unit (evaporator) 4. Air conditioning system. 2. The indoor unit according to claim 1, wherein a heat-promoting compound circuit (9) is formed between the expander (1) and the indoor unit (2), and a circuit (SV-4) having a bypass structure at the outlet of the compressor (3). It is configured to be connected to (2), the bypass expansion valve 10 is installed in the circuit (SV-4) having the bypass structure to suck the compressor (3) through the heat promotion of the heat promoting composite circuit (9) Cooling and heating system with a fresh gas separation device, characterized in that to increase the temperature to prevent the liquid refrigerant flow into the compressor (3).