JPS5816153A - 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] 27. ・Honmeya is concerned with the improvement of refrigeration equipment such as freezers, refrigerators, and prefabricated refrigerators.In particular, after the compressor is stopped, high-temperature refrigerant flows into the evaporator from the high-pressure side due to the pressure difference. lower the temperature,
The purpose is to prevent heat load on the refrigeration equipment.

As shown in Fig. 2, the conventional cooling system of a refrigeration equipment includes a high-pressure container type compressor 1 such as a rotary compressor,
A condenser 2, a dryer 3, a refrigerant control valve 4, a capillary tube 5, an evaporator 6, and a suction pipe are connected in sequence,
When the high-pressure container type compressor 1 is stopped, the refrigerant control valve 4 is closed, and the high-temperature refrigerant on the high-pressure side flows into the evaporator 6 through the capillary tube 5 due to the pressure difference. The purpose was to prevent However, since the compressor 1 is a high-pressure container type, when the compressor 1 is stopped, the high-temperature, high-pressure refrigerant on the high-pressure side passes through the cylinder and is further heated in the shell.
The temperature becomes extremely high, and this refrigerant flows into the evaporator e from inside the suction viagua, resulting in an even greater heat load on the refrigeration system than when the refrigerant control valve 4 is not provided.

The refrigeration system of the present invention includes a check valve in the suction pipe to prevent high-temperature, high-pressure gas from flowing into the evaporator from the high-pressure container type compressor through the suction pipe. In addition, by installing an Aqui-Frector in the heat insulating material and arranging a capillary tape and a refrigerant for heat exchange on the Agui-no-Retar, the high-temperature and high-pressure refrigerant in the condenser is released after the compressor is stopped. , when passing through the capillary chest,
This makes it possible to significantly reduce the amount of heat load on the evaporator by cooling with a cold storage material.

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

In the figure, 8 is a refrigerator body formed by an inner box ♀, an outer box 10, and a heat insulating material 4'A11, and a door 12 having a heat insulating material.
, and a gasket 13 that closes the main body 8 and door 12 to form a heat insulating box, and has a cooling chamber 14 inside. Reference numeral 15 denotes an evaporator, which is installed in the cooling chamber 14 and cools the inside of the cooling chamber 14 to an arbitrary temperature. 16 is a high-pressure container type compressor consisting of a rotary compressor; 17 is a condenser; 18 is a capillary tube including a first cabillary tube 19a and a second capillary tube 19
It is divided into b. This is a bulging tube part with a 20-digit cylindrical tube installed in a part of the Satanic wall 21. And compressor 16, condenser 17, capillary tube 18,
An accumulator 20° and an evaporator 15 form a refrigeration cycle.

The accumulator 20 includes an evaporator 15 and a compressor 16.
It is provided in the middle of the suction pipe 21 that communicates with the air conditioner and is buried in the insulation material 11.

Further, a second cavillary tag 19b is disposed around the outer periphery of the accumulator 20 for heat exchange.

Reference numeral 22 denotes a cold storage material, which is attached to the second capillary tube 19b and the second capillary tube 19b disposed around the outer periphery of the accumulator 20 and the accumulator 2o so as to perform heat exchange. . Second cabillary tape 19b
Insert the first capillary so that the heat exchange length is sufficient.
The inner diameter of the second capillary tube is larger than that of the first capillary tube 19a, and the depressurizing effect within the second capillary tube is also reduced.
The pipe 19a and the evaporator 15 are connected. In other words, the achievable mullet 2o refers to the bulge W of the suction pipe. 23 is a check valve, which is installed on the extended suction pipe.

In the above configuration, when the compressor 16 is in operation, the evaporator 15 cools the cooling chamber 14. Then, the liquid refrigerant that has not been evaporated in the evaporator 15 enters the accumulator 2o, and only the gas refrigerant flows into the suction pipe 21 and is sucked into the n1 compressor 16. The liquid refrigerant that has entered the accumulator 20 evaporates within the accumulator 20 and cools the accumulator 2o and the cool storage material 22 mounted for heat exchange. At this time, the second capillary
Since the temperature of the tube 19b is after being depressurized by the first capillary tube 1'9a, it is lower than that of the cool storage material 22, and the cool storage material 22 is not heated.

Next, when the cooling chamber 14 reaches a predetermined temperature, high-temperature, high-pressure refrigeration tends to flow into the evaporator 16 through the compression pipe 21 due to the pressure difference inside the compressor 16.

However, since the check valve 23 is in operation, high-temperature, high-pressure refrigerant does not flow into the evaporator 15 from the suction pipe 21. Therefore, the high temperature and high pressure refrigerant is transferred from the condenser 17 to the first capillary pipe 19a1 and the second capillary tube 1.
It flows through 9b into the evaporator 15 where the pressure is low.

At this time, the flow n of the refrigerant is simply moved without being subjected to a depressurizing action by the capillary tube 18.

The high-temperature and high-pressure refrigerant flows through the first cavity tag 19a.
The flow n1 enters the second cavity 19b. The second capillary tube 19b is arranged to exchange heat with the cold storage material 22. Since the temperature of the refrigerant flowing into the second capillary tube 19b is higher than the temperature of the regenerator material 22, which is being cooled by the accumulator 20 and the second capillary tube 19b while the compressor 16 is operating, the second capillary tube 19b When the refrigerant passes through the refrigerant, it is cooled by the cold storage material 22 and becomes a low-temperature refrigerant. Second capillary tube 19b
has a relatively large inner diameter and a sufficient length, so that the refrigerant can sufficiently exchange heat with the cold storage material 22, and the refrigerant is transferred to the evaporator 1.
Cool to the same temperature as 5. The refrigerant, which has become a low-temperature refrigerant, flows into the evaporator 16, but since it is cooled to a temperature that is equal to the temperature of the refrigerant and the temperature of the evaporator 16, it almost exceeds the temperature of the evaporator 15 by 1. Sa1! There is no such thing as C1. Therefore, there is no heat load in the cooling chamber 14, and a refrigerant control valve is used in the cooling system of a low-pressure container type compressor even in a high-pressure container type compressor, and when the compressor is stopped,
It is possible to obtain a power saving effect equal to or greater than that obtained by preventing refrigerant from flowing into the evaporator.

As is clear from the above explanation, the refrigeration system of the present company constructs a refrigerant circuit by sequentially connecting a high-pressure container type compressor, a condenser, and a gear villa line-up evaporator. An expansion tube section is installed in a part of the suction tube that connects the compressor and the suction tube, and a capillary Tieg and regenerator material are installed in the expansion tube section.
L-e;n- Since the heat exchange section is buried in the heat insulating material and a check valve is provided at the outlet of the suction tube, the The expansion tube section with heat capacity sufficiently cools the regenerator material, and when the compressor is stopped, the refrigerant temperature of the high-temperature refrigerant that flows into the regenerator material from the condenser through the capillary tip into the evaporator is significantly lowered. In addition, the check valve completely prevents refrigerant from flowing into the evaporator from the high-pressure vessel type compressor, so the evaporator temperature hardly increases and the refrigerant expands into the insulation material. Tube, capillary
Since a heat exchange part is provided for the cold storage material, even if the refrigerant flowing from the condenser to the evaporator side warms up when the compressor is stopped, it will not cause a heat load to the cooling chamber side, and noise can be reduced, etc.5- The effect is great.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a refrigerator equipped with Xu Marming's refrigeration system, and Fig. 2 is a conventional refrigerant circuit diagram. 15...Evaporator, 16...-High pressure container type compressor, 18...Capillary tube,
2゜・・・Accumulator (swelling tube part L 21・
...Suction tube, 22nd ... Cold storage material, 23 ... Check valve. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Decoy/6 21 Figure 2

Claims (2)

[Claims] (1) A compressor, a condenser, a gear pillar tape, and an evaporator are connected in sequence to form a refrigerant circulation circuit, and an expansion tube is provided in a part of the suction tube that connects the evaporator and compressor. A capillary tape and a regenerator material are arranged in the section for heat exchange, and each is buried in the insulation material, and a check valve is installed between the suction tape and the compressor.
1st Samurai (1-suru refrigeration device. (2) The capillary tape is divided into a first gear tube and a second capillary tube, the second capillary tape has a larger inner diameter than the first capillary tube, and the second capillary tape is expanded with the second gear tube. ↓Claim 1 of the first patent claim
Refrigeration equipment as described in section.