KR0120166Y1 - Refrigeration apparatus for refrigerator - Google Patents

Abstract

The present invention relates to a refrigeration apparatus of a refrigerator having a structure capable of preventing the compressor oil from splashing out at the beginning of the compressor without requiring a high starting voltage at the initial startup of the compressor. A first valve installed on a pipe that communicates between the compressor and the condenser, the first valve being a solenoid valve that closes the pipe when the compressor is turned off and is closed for a predetermined time when the compressor is turned on; A third valve installed on a pipe connecting the compressor and the evaporator to communicate with each other, the third valve being a solenoid valve that closes the pipe when the compressor is OFF and is closed for a predetermined time when the compressor is ON; A pipe connecting the pipes to communicate with each other at a predetermined position closer to the compressor than the first and third valves; And a second valve installed on the pipe, the second valve being a solenoid valve which opens the pipe when the compressor is OFF and is open for a predetermined time when the compressor is ON.

Description

Refrigerator freezer

1 is a schematic diagram showing a refrigerator of a conventional refrigerator;

Figure 2 is a schematic diagram showing a refrigerator of the refrigerator of the present invention.

* Explanation of symbols for main parts of the drawings

1: compressor 2: condenser

3: evaporator 4: capillary

5, 6, 7, 10: connecting pipe

11, 12, 13: first, second and third valve

The present invention relates to a refrigerating device of a refrigerator, and more particularly, to a refrigerating device of a refrigerator having a structure capable of preventing the compressor oil from splashing out at the beginning of the compressor without requiring a high starting voltage at the initial startup of the compressor.

The refrigerator of the conventional refrigerator has a pipe (5) for communicating between the compressor (1) and the condenser (2) and the pipe (7) and the evaporator for communicating between the condenser (2) and the evaporator (3). It consists of a pipe 6 which connects between 3 and the compressor 1 in communication so that a refrigerant circulates through the cycle.

The conventional refrigeration apparatus as described above requires a high starting voltage because the refrigerant pressure in the cycle is high at the initial start of the compressor 1, and the compressor oil is splashed out at the beginning of the compressor 1 and the refrigerant in the cycle is started. There was a problem that mixed with and caused the clogging of the capillary (4).

In consideration of the above problems, the present invention does not require a high starting voltage at the initial start of the compressor, and provides a refrigerator freezing apparatus having a structure in which the oil for the compressor is protruded at the initial start of the compressor and does not cause capillary blockage. It aims to do it.

In order to achieve the above object, the present invention provides a refrigerator for a refrigerator, which is installed on a pipe connecting the compressor and the condenser to communicate with each other, the pipe is closed when the compressor is turned off and when the compressor is turned on for a predetermined time. A first valve which is a solenoid valve;

A third valve installed on a pipe connecting the compressor and the evaporator to communicate with each other, the third valve being a solenoid valve that closes the pipe when the compressor is OFF and is closed for a predetermined time when the compressor is ON;

A pipe connecting the pipes to communicate with each other at a predetermined position closer to the compressor than the first and third valves;

And a second valve installed on the pipe, the second valve being a solenoid valve which opens the pipe when the compressor is OFF and is open for a predetermined time when the compressor is ON.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the subject innovation.

In FIG. 2, reference numeral 1 denotes a compressor, 2 a condenser, 3 an evaporator, and 4 a capillary tube.

The compressor 1 and the condenser 2 are communicatively connected by a pipe 5, and the compressor 1 and the evaporator 3 are communicatively connected by a pipe 6. have.

In addition, the condenser 2 and the evaporator 3 are connected to each other by a pipe 7 provided with a capillary tube 4.

The pipes 5, 6 are connected to each other by a pipe 10, and a first valve 12, which is a solenoid valve for opening and closing the pipe 10, is provided on the pipe 10.

On the pipe 5, a first valve 11, which is a solenoid valve for opening and closing the pipe 5, is provided at a position closer to the condenser 2 than the pipe 10, and the pipe 6 is provided on the pipe 6. The third valve 13 which is a solenoid valve which opens and closes the said pipe 6 is provided in the position closer to the said evaporator 3 than the 10.

Hereinafter, the operation and effect of the present invention according to the above configuration.

When the compressor 1 is turned off, the first and third valves 11 and 13 are closed, and the second valve 12 is opened to block the refrigerant on the high pressure side L2. Maintain low pressure.

At the initial start-up when the compressor 1 is turned on, for example, the L1 side refrigerant at low load because the first and third valves 11 and 13 are closed and only the second valve 12 is opened for about 10 seconds. Since only a start is required, the compressor 1 can be started with a low start voltage. In addition, since the compressor oil protruding at the initial startup of the compressor 1 is recovered by returning to the compressor 1 after circulating only the L1 side, there is no fear of capillary blockage due to the oil.

As an example of the compressor 1, when the initial start of about 10 seconds is completed, the first and third valves 11 and 13 are opened, and the second valve 12 is closed, so that the pipe 10 is shut off to cool the refrigerant. Will cycle through the normal cycle.

Therefore, the present invention is a very useful design that can prevent the capillary clogging caused by the compressor oil, as well as can start the compressor (1) at a low voltage during the initial startup of the compressor by the configuration and operation.

Claims (1)

In the refrigerating device of a refrigerator, a compressor is installed on a pipe 5 that communicates between the compressor 1 and the condenser 2 so that the pipe 5 is closed when the compressor 1 is turned off and the compressor is turned on. A first valve 11 which is a solenoid valve closed for a predetermined time at the time; It is installed on the pipe 6 which connects between the compressor 1 and the evaporator 3 in communication, and closes the pipe 6 when the compressor 1 is turned off and closes for a predetermined time when the compressor is turned on. A third valve 13 which is a solenoid valve present; A pipe (10) for mutually connecting the pipes (5, 6) at a predetermined position closer to the compressor (1) than the first and third valves (11, 13); And a second valve 12 which is provided on the pipe 10 and is a solenoid valve which opens the pipe 10 when the compressor 1 is OFF and is open for a predetermined time when the compressor is ON. Refrigerator freezer.