JPS599467A - Accumulator for refrigerator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an accumulator installed on the suction side of a compressor in a refrigeration cycle such as an air conditioner or a heat pump type air conditioner/heater. Conventionally, in a refrigeration cycle/L' such as an air conditioner or a one-pump type air-conditioning/heating system, refrigerant liquid returns from the evaporator to the compressor when the compressor starts up, so as a preventive measure, conventionally the compressor An accumulator is provided on the suction side.

An example of the structure of the conventional accumulator will be explained with reference to FIG. In FIG. 1, the cylindrical container 1 includes a suction pipe 3 that takes in the refrigerant from the evaporator 2, and a suction pipe 3 that takes in the refrigerant from the evaporator 2.
A connecting pipe 5 having openings 4 on three sides is provided, and the connecting pipe 5 is connected to the suction lower of the compressor 6.

To briefly explain the shortcomings of this conventional accumulator, the liquid refrigerant that had accumulated in the evaporator 2 passes through the suction pipe 3 and temporarily accumulates at the bottom of the cylindrical container 1 at the same time as the compressor 6 is started. Although the structure is such that only the gas component is sent through the connecting pipe 6, the pressure inside the cylindrical container 1 begins to drop rapidly immediately after the liquid refrigerant accumulates in the cylindrical container 1 after the compressor 6 is started. Therefore, the liquid refrigerant in the cylindrical container 1 causes a boiling phenomenon, and the inside of the cylindrical container 1 is filled with the foamed refrigerant in a gas-liquid mixed state. The foamed refrigerant containing a large amount of this liquid component is sent from the connecting pipe 6 to the compressor 6, and the actual situation is that the liquid refrigerant and the gas refrigerant are not completely separated.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and its purpose is to provide an accumulator that prevents the foam from returning to the compressor due to the foaming phenomenon immediately after the compressor is started.

In order to achieve the configuration and objectives of the invention, the present invention provides a cylindrical container containing:
A partition plate is provided to divide the inside of this cylindrical container into the royal and royal rooms, an opening is provided in the center of this partition plate, and one end is passed through the opening of the partition plate and one end is connected to the upper chamber.
, a connecting pipe whose other end communicates with the suction port of the compressor is provided, and the area of the connecting port formed between the connecting pipe and the opening of the partition plate is twice the cross-sectional area of the connecting pipe. By making it as small as below, it is possible to prevent the foaming phenomenon of the refrigerant in the accumulator that occurs immediately after the compressor is started.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Here, the same parts as in FIG. 1 are given the same numbers and will be explained.

In the figure, the liquid refrigerant accumulated in the evaporator 2 passes through the suction pipe 3 at the same time as the compressor 6 is started, and passes through the royal 1 of the cylindrical container 1.
0, passes through the communication port 12 formed between the opening provided in the center of the partition plate 11 and the connecting pipe 5, and enters the lower chamber 13.
It accumulates in After that, the pressure in the upper chamber 10 where the opening 4 of the connecting pipe 5 is provided decreases rapidly, but if the cross-sectional area of the connecting port 12 is less than twice the cross-sectional area of the connecting pipe 6, the cross-sectional area of the cylindrical container 1 is Since it is very small compared to the area, even if the liquid refrigerant accumulated in the lower chamber 13 causes a foaming phenomenon, the amount of foamed refrigerant that enters the upper chamber 10 is very small.

Therefore, the opening 4 of the connecting pipe 6 provided above the upper chamber 1o
The liquid component of the refrigerant does not enter into the compressor 6, the gas component always flows into the compressor 6, the gas-liquid separation is completely performed, and the suction of liquid refrigerant is prevented. As described above, in the present invention, the area of the communication port formed between the connecting pipe and the opening of the partition plate is set to be less than twice the cross-sectional area of the connecting pipe, so that the liquid generated when the compressor is started is reduced. Since the foaming phenomenon of the refrigerant is suppressed only in the lower chamber, and the liquid refrigerant does not enter the chamber where the opening of the connecting pipe connected to the compressor suction port is open, the liquid refrigerant does not flow when the compressor is started. This has the effect of providing an accumulator that does not suck in refrigerant.

[Brief explanation of drawings]

FIG. 1 is a diagram of an accumulator and its refrigeration cycle showing a conventional example, and FIG. 2 is a diagram of an accumulator and its refrigeration cycle showing an embodiment of the present invention. 1...Cylindrical container, 6...Connecting pipe, 6...
...Compressor, 1o...Upper chamber, 11...
・・Partition plate, 12・・・・Connection port, 13・・・・
・Lower chamber. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A cylindrical container, a partition plate that divides this cylindrical container into a royal room and a royal room, an opening provided in the center of this partition plate, and one end that passes through the opening of this partition plate and opens into the upper chamber. A connecting pipe is provided, the other end of which connects to the suction port of the compressor, and the area of the connecting port formed between the connecting pipe and the opening of the partition plate is determined by the cross-sectional area of the connecting pipe. Accumulator for refrigeration equipment that is less than 2 times as large.