JPS5872850A - Refrigerator - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a refrigeration system that uses a high-pressure container type compressor, such as a rotary type compressor, as a compressor constituting a cooling system.

Conventionally, in refrigerators using this type of refrigeration system, the temperature inside the refrigerator has been controlled by controlling the compressor, which forms part of the cooling system, in an ON-OFF state. and,
At the moment the compressor stops, a large amount of high θ+XH high pressure refrigerant remains in the condenser and compressor. Therefore, at the same time as the compressor is stopped, the cooling system's pressure reducing device, the cavillary cheep, has the function of a pressure equalizing pipe that balances high and low pressures, rather than its original pressure reducing function.
The high temperature, high pressure refrigerant in the condenser flows into the evaporator. The inlet of such high-pressure, high-temperature refrigerant into the evaporator, that'! However, this method had the drawback of increasing the amount of cargo inside the sake warehouse, which ultimately led to an increase in electricity costs.

In view of this, the present invention aims to prevent high-pressure, high-width refrigerant from flowing into the evaporator by providing a float valve for controlling the flow of refrigerant between the outlet 1j of the condenser and the cavity archive. It is.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 is a refrigerator main body, and a partition material 4 is provided to partition the inside of a cabinet 3 made of heat-insulating LY2 into a freezer compartment 6. The royal room is divided into 6 cold rooms. Drawing room 5.6 and d, respectively dedicated freezer door 7. It has a refrigerator compartment door 8. The inside of the partition member 4 is equipped with an evaporator 9 that forms part of the cooling system, a fan 10 that sends cold air into the refrigerator, and a cold air outlet 11 for the freezer compartment. Cold air is sent from the cold air outlet 12 for the refrigerator compartment to the n rooms 5 and 6, respectively, to cool the inside of the refrigerator. The cold air outlet 12 for the refrigerator compartment is equipped with a damper 13 that detects the temperature inside the refrigerator compartment 6 and adjusts the opening of the cold air outlet 12 for the refrigerator compartment. It is equipped with a thermostat 15 that detects this and turns off the operation of the compressor 14. The cooling system is a rotary type compression f? that creates high pressure inside the closed container. ! 1
14. Condenser 16. The evaporators 9 are connected in sequence, with a suction pipe 17° between the evaporator 9 outlet and the compressor 14 suction port, and a capillary cheep 18 between the evaporator 9 outlet and the condenser 16 outlet. They are connected. 19 is a float valve that is vertically connected between the outlet of the condenser 16 and the inlet of the capillary tube 18 with the inlet side made of earth, and is located at the bottom of the piping circuit of the cooling system. The refrigerant circuit is controlled to open and close when stopped.

The float valve 19 has a float part 2 in which a float part 21 made of a foamed phase material such as chloroprene or nitrile rubber and a closure body 22 made of nylon etc. are integrated inside a container 20 made of gold.
3 is housed so as to be movable downward with a gap, and the conical closure body 22 is sealed by a sole portion 24 made of metal or the like. It looks like this.

Furthermore, a stop 26 with a plurality of communication holes 25a is provided at the upper part of the container 20 so that the float part 23 can be stopped at a position where the float part 23 is raised several times. 26r1 A protrusion provided on the float 210 to keep the communication hole 25a open at the point where the float part 23 hits the stop plate 25, and above the float valve 19, there is a protrusion from the 1st part of the condenser 16. Refrigerant passage 20a
is provided in the container 20 and connected to the outlet of the condensate R7n6. A capillary tube 18 is located below the float valve 19.
An outlet 20b connected to the person 1-1 is provided at the bottom of the container 20, and its inner diameter is made to be the same as the inner diameter of the cavity recess 18.

Next, the operation of the above configuration will be explained.

Damper 1 provided at cold air outlet 12 for refrigerator compartment in refrigerator compartment 6
3, adjust the opening of the cold air outlet 12 for the refrigerator compartment,
The amount of cold air cooled by the evaporator 9 and sent by the fan 1° into the refrigerator compartment 6 is controlled to cool the refrigerator compartment 6 to a predetermined temperature.

It's a trench, thanks to the thermostat 15 installed in the freezer room 5.
The temperature of the freezer compartment 6 is detected, and if the temperature exceeds a predetermined temperature, the compressor 14. The fan 7 is operated to control the temperature to a predetermined temperature. During cooling operation, compressor 14, condenser 16. Capillary tube 18. The evaporator 9 constitutes a regular cooling system, the compressor 14 is operated, and the refrigerant is supplied to the condenser 1.
When the refrigerant liquid begins to condense and liquefy at 6, the refrigerant liquid begins to accumulate inside the container 20 of the vertically mounted float valve 19. At this time, inside the container 2o of the float valve 19, the closing body 22 and the sealing part 24 cause the high-pressure refrigerant compressed by the compressor 14 to push down the float part 23. The float part 23 floats up due to the buoyancy action of the shi to prevent it from flowing, the seal part 24 opens, and the refrigerant passes through the refrigerant passage 20a, the communication hole 25a, between the float part 21 and the container 20, the seal part 24, and the outlet 20b. The liquid flows into the cavity top 18. The specific gravity and volume of the float portion 21 are determined based on the specific gravity of the refrigerant liquid and the high pressure inside the condenser 16.

On the other hand, when the compressor 14 is stopped by the thermostat 15, the liquefied refrigerant that has been flowing into the condenser 16 and the flow 1-F 19 flows into the gear villa refrigerant at position 1, which is slightly lower than the upper surface of the float part 21 of the float valve 19. When the refrigerant flows through the pipe 18, the buoyant force decreases compared to the refrigerant gas pressure, and the blocker 22 is sealed by the seal H1*4, so that the refrigerant no longer flows. Therefore, the high-pressure, high-temperature refrigerant in the condenser 16 does not flow into the evaporator 9 through the capillary pipe 18.

Further, since the stop plate 25 provided inside the float valve 19 container is located at a position several 1 mL from the upper surface of the float section 23, the float section 23 can easily move up and down without greatly tilting.

Since the float part 23 is made of a foamable material such as chloroprene or nitrile rubber, it has no swelling effect on refrigerants such as chlorofluorocarbon gas and is inexpensive.

As is clear from the above description, the refrigerator according to the present invention includes a high-pressure container type compressor and condenser.

The cooling system, which consists of a cabillary ceiling and an evaporator connected in sequence, cools the inside of the refrigerator and reduces the compressor's 0N.
- Since the internal temperature side (goods) is controlled by OFF operation and a float valve is installed vertically between the condenser outlet and the capillary tube inlet, water flows into the evaporator when the cooling operation is stopped. It is possible to eliminate the need for high-pressure, high-temperature refrigerant, and since it is a float valve, it can be controlled without using a special power source or electricity such as a solenoid valve, so it is possible to obtain a very large power saving effect. becomes.

Furthermore, the float valve is made of inexpensive materials and has a relatively simple structure, so it has the advantage that it can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a refrigerator according to an embodiment of the present invention, and FIG.
The figure shows a cooling→no-cycle diagram of the same refrigerator, and Figure 3 shows a cross-sectional view of the float valve. 14... Compressor, 16... Condenser, 1
8... Capillary tube, 19...
float valve. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 2 Figure 3

Claims (1)

[Claims] A cooling system consisting of a compressor, a condenser, a cavity archive, and an evaporator connected in sequence cools the inside of the refrigerator and controls the temperature inside the refrigerator by turning the compressor on and off. The refrigeration system is equipped with a float valve that opens and closes depending on the increase and decrease of circulating refrigerant due to the operation of the compressor, between the inlet of the cavity chest and the inlet.