KR0134978Y1 - Accumulator - Google Patents

Abstract

The present invention provides a refrigeration cycle that can reduce the installation space and improve the cooling capacity by forming a receiver and a liquid separator integrally so that the low temperature liquid refrigerant and the high temperature gas refrigerant can exchange heat with each other. In the refrigeration cycle in which a compressor, a condenser, an expansion valve, and an evaporator are connected through a refrigerant pipe, and the receiver and the liquid separator are installed independently, a fluid pipe having a refrigerant pipe connecting the expansion valve and the condenser is installed at the top. The separator and the pipes connected to the evaporator and the compressor are respectively formed up and down, and are integrally formed through the receiver.

Description

Refrigeration cycle receiver combined liquid separator

1 is a general refrigeration cycle circuit diagram.

2 is a Moriel diagram of a conventional device.

3 is a schematic diagram showing a conventional receiver structure.

Figure 4 is a longitudinal sectional view showing a conventional liquid separator.

5 is a graph comparing the coefficient of performance when applying the receiver and the liquid separator.

Figure 6 is a view showing a receiver combined liquid separator of the present invention, (a) is a cross-sectional view. (b) is a side sectional view.

7 is a circuit diagram showing a freezing cycle of the present invention.

8 is a Molieel diagram by the freezing cycle of the present invention.

* Explanation of symbols for main parts of the drawings

100: refrigerant separator 110: receiver

120: liquid separator

The present invention is to separate the refrigerant in the refrigeration cycle, in particular the liquid separator of the combined cycle of the refrigeration cycle united in one body so that the cooling and heating can be performed at the same time by using the temperature difference of the refrigerant flowing into the receiver and the liquid separator It is about.

In general, the refrigeration cycle is forced to circulate the refrigerant by a mechanical method to achieve heat exchange with the outside air through the compression-condensation-expansion-evaporation process to achieve the desired cooling, the configuration of the refrigeration cycle And described with reference to Figure 2 as follows.

In the evaporator 40, the liquid refrigerant evaporates and the low pressure refrigerant vapor, which absorbs heat from the surroundings, enters the compressor 10, where the pressure and temperature are increased to enter the condenser, where the refrigerant is sufficiently compressed to condenser 20 Maintain a temperature higher than the temperature of the coolant that removes heat. After the heat is removed from the condenser 20, the condensed liquid refrigerant enters the receiver 50, and then the refrigerant falls to the evaporator pressure through the expansion valve 30.

When the liquid separator 60 does not sufficiently exchange heat with the outside air in the evaporator 40, the liquid discharged through the evaporator 40 outlet and the gaseous refrigerant are separated to introduce only the gas refrigerant into the compressor 10. The group 50 stores the liquid refrigerant liquefied in the condenser 20, but when the refrigerant is not completely liquefied in the condenser 20, it is difficult to expand the gas refrigerant having a large specific volume to a certain flow rate so that only the liquid refrigerant expands ( 40).

As shown in FIG. 3, the receiver 50 receives liquid refrigerant discharged from the condenser 20 through an inlet pipe 51 provided at one side of the receiver 50, and stores the fluid on the other side. Outlet pipe 52 extending to the lower end of the body 50 is installed so that only the liquid refrigerant can be sent to the expansion valve 30. When the amount of liquid refrigerant liquefied in the condenser 20 is large, the liquid refrigerant is stored in the receiver 50, and the liquid refrigerant remaining in the condenser 20 is reduced, so that the heat exchange area of the condenser 20 may be utilized as it is.

The liquid separator 60 is attached to the suction port side of the compressor 10 as shown in the cross-sectional view of FIG. The liquid separator 60 includes a filter network 61 for filtering foreign matters from the refrigerant discharged from the evaporator 40, and a baffle 62 for preventing liquid refrigerant from flowing directly into the compressor 10. It becomes the structure connected with 63.

In addition, an oil suction hole 64 is formed in the gas coolant discharge tube 63 for sending the refrigeration oil to the sliding part of the extruder 10.

However, as shown in Fig. 5, the air-conditioning system using the receiver has a lower discharge pressure than the air-conditioning system using the liquid separator, which results in a higher coefficient of performance (COP). Although air conditioners emphasize the need for receivers, receivers and separators are not used or partially attached to household refrigeration systems, except for large refrigeration systems, for reasons of installation space and cost. Most air conditioning systems do not use receivers, but R22 refrigerant, which is a working fluid used in air conditioners, is applied as an alternative refrigerant. In the air conditioners, there is an urgent need for structures that can reduce costs and secure installation space as the need for receivers increases. to be.

In addition, even if the receiver and the liquid separator are installed in the refrigeration cycle, because the refrigerant flowed into the outside air heat, the cooling and heating is not enough, the gas refrigerant flows into the expansion valve or the liquid refrigerant flows into the compressor to reduce the cooling capacity There was this.

The present invention has been devised in view of the above points, and in particular, the receiver and the liquid separator are integrally formed so that the low temperature liquid refrigerant and the high temperature gas refrigerant having a large temperature distribution can exchange with each other, thereby reducing the installation space and cooling ability. It is an object of the present invention to provide a liquid separator of the refrigeration cycle combined with the liquid separator to improve the performance.

In order to achieve the above object, the liquid separator combined liquid separator of the present invention is a compressor, a condenser, an expansion valve, and an evaporator connected through a refrigerant pipe, and in a refrigeration cycle in which the receiver and the liquid separator are installed independently, the expansion valve and the condenser are connected to each other. A receiver and a liquid separator each having a refrigerant pipe installed on an upper surface thereof, and a liquid separator having a refrigerant pipe connected to an evaporator and a compressor installed up and down, respectively, are integrally formed through the receiver.

According to this configuration, the high-temperature liquid refrigerant flowing out of the condenser flows into the receiver, the liquid refrigerant and gas refrigerant is in equilibrium up and down, and the liquid refrigerant stored in the lower portion and the low-temperature liquid refrigerant introduced into the liquid separator After cooling by heat exchange, the liquid is introduced into the expansion valve, and at the same time, the liquid refrigerant introduced into the liquid separator at a low temperature in the evaporator is exchanged with the high temperature liquid refrigerant introduced into the receiver and introduced into the compressor in a gaseous state.

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

6 is a block diagram showing a freezing cycle of the present invention, the same parts as in the prior art will be attached with the same reference numerals. In the drawing, reference numeral 100 denotes a refrigerant separator. The refrigerant separator 100 includes a conventional receiver and a liquid separator formed in a single body in a double structure and is attached to a compressor, and the movement process of the refrigerant is the same as in the prior art.

The refrigerant separator 100 consists of a single body having a double cylindrical structure in which the liquid separator 120 penetrates the receiver 110 in the form of a conventional compressor equipped with a liquid separator as shown in FIG. There is a storage space.

The refrigerant separator 100 has a suction pipe 112 connected to the condenser 20 on one side of the upper surface of the cylindrical body 111 of the receiver 110, the discharge pipe 113 is connected to the expansion valve 30 on the other side The end portion is inclined at a predetermined angle so as to freely discharge the refrigerant to the expansion side 30 and is configured to extend downward.

In addition, a cylindrical liquid separator 120 penetrates vertically in the center of the body 111 of the receiver 110 so that the low temperature liquid refrigerant introduced into the liquid separator 120 and the high temperature introduced into the receiver 110 are formed. The liquid refrigerant is formed to exchange heat, and the liquid separator 120 is provided with a filter net 122 for filtering foreign substances of the refrigerant discharged from the evaporator 40 in the upper portion of the body 121, the filter net ( A baffle 123 extending upward from the bottom of the main body 121 is connected to the compressor 10 through the gas refrigerant discharge pipe 124 so that only the gas refrigerant may flow into the compressor 10 below the 122. have.

Referring to the operation and effect of the present invention configured as described above, the present invention is the refrigerant discharged from the evaporator 40 is introduced into the liquid separator 120, the refrigerant introduced is a liquid refrigerant is a mixture of liquid and gas The gas refrigerant is stored in the lower portion and only the gas refrigerant flows into the compressor 10. The low temperature liquid refrigerant accumulated in the lower portion of the liquid separator 120 is introduced from the condenser 20 to exchange heat with the high temperature liquid refrigerant stored in the receiver 110. Gradually evaporating.

Meanwhile, the high temperature liquid refrigerant discharged from the condenser 20 accumulates in the receiver 110, and the liquid refrigerant and the gas refrigerant are in equilibrium in the receiver 110. Herein, the liquid refrigerant exchanges heat with the low temperature liquid refrigerant of the liquid separator 120, so that the liquid refrigerant flows out into the expansion valve 30 through the discharge tube 113 in a state of being sufficiently cooled.

That is, since the high temperature liquid refrigerant introduced into the receiver 110 and the low temperature liquid refrigerant introduced into the liquid separator 120 exchange heat with each other in the refrigerant separator 100 with a significant temperature difference, the heating and cooling of the refrigerant proceed rapidly. As a result, only the gas refrigerant enters the compressor 10 and only the liquid refrigerant flows into the expansion valve 30, thereby improving the freezing capacity.

The present invention has a conventional refrigeration cycle of 1'-2'-3'-4 'and a refrigeration cycle of 1-2-3, as shown in FIG. Considering that 4, the freezing capacity of ΔH is improved.

That is, the saturated steam refrigerant 1 'introduced into the compressor 10 exchanges heat with the high temperature liquid refrigerant inside the receiver 110 to become the superheated steam refrigerant 1 and enters the compressor 10, and the high temperature inside the receiver 110. The liquid refrigerant 3 'is also introduced into the expansion valve 30 with the liquid refrigerant 3 sufficiently supercooled by heat exchange with the low temperature liquid refrigerant inside the liquid separator 120.

As described above, the present invention not only reduces the installation area and reduces the cost by integrally forming the liquid separator and the receiver, but also the conventional liquid separator in which the refrigerant liquid exchanges heat with the ambient air. Heat exchange with the liquid refrigerant in the liquid separator prevents liquid compression due to rapid evaporation of the liquid refrigerant in the liquid separator, and the liquid refrigerant in the fluid container is sufficiently supercooled because it exchanges heat with the liquid refrigerant in the liquid separator. The possibility of gas refrigerant entering the expansion valve is eliminated to improve the cooling capacity.

Claims (4)

In the refrigeration cycle of the air conditioner consisting of a compressor, a condenser, an expansion valve, an evaporator, the liquid separator located between the evaporator and the compressor and the receiver located between the condenser and the expansion valve in a double cylinder form, the liquid separator is An inlet pipe connected to the evaporator to introduce a low temperature liquid refrigerant and a gas refrigerant; A cylindrical body which separates the liquid refrigerant and the gas refrigerant and exchanges heat with the high temperature liquid refrigerant in the receiver constituting the outer cylinder to accelerate the evaporation of the liquid refrigerant; A discharge body configured to be connected to the compressor and into which only a gas refrigerant flows in, and constitute an inner cylinder of the double cylinder, and the receiver includes a cylinder body for storing liquid refrigerant at a predetermined level; An inlet pipe connected to the condenser to introduce a high temperature liquid refrigerant; It is connected to the expansion valve and is located on the inner circumferential surface of the receiver is composed of an outlet pipe for introducing only the supercooled liquid refrigerant by heat exchange with the low-temperature refrigerant of the liquid separator constituting the inner cylinder, by configuring the outer cylinder of the double cylinder And a liquid cycle separator for a freezing cycle receiver, characterized in that the liquid separator and the receiver are integrated. The liquid separator according to claim 1, wherein the pipes connecting the expansion valve and the condenser are respectively installed on an upper portion of the receiver. The liquid separator according to claim 1, wherein the pipes connected to the evaporator and the compressor are respectively installed above and below the liquid separator. The liquid separator according to claim 1, wherein the liquid separator is integrally formed through the receiver.