JPH0658638A - Freezer - Google Patents

Abstract

PURPOSE:To prevent dew condensation on an external surface of a sealed container of an accumulator and to improve freezing capacity of a freezer. CONSTITUTION:A tank 15 to surround a sealed container 11 for an accumulator 10 is provided. With an atrium 16 defined by the sealed container 11 and the tank 15, a supply pipe 17 to introduce liquid refrigerant from a condenser 2 and a flowout pipe 18 to introduce the liquid refrigerant in the atrium to an expanding means 4 are allowed to communicated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating device such as an air conditioner, a refrigerator, a dehumidifier, and a water heater.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a refrigerant circuit of a conventional air conditioner. The gas refrigerant discharged from the compressor 1 enters the condenser 2 and radiates heat to the outside air sent from the blower 3 to be condensed and liquefied. This liquid refrigerant enters the receiver 7 and is temporarily stored therein. The liquid refrigerant flowing out from the receiver 7 enters the expansion means 4 and is adiabatically expanded by being throttled here. This refrigerant enters the evaporator 5 and absorbs heat from the indoor air sent by the blower 6 to be evaporated and vaporized. Then, this gas refrigerant returns to the compressor 1 via the accumulator 10.

The accumulator 10 comprises a closed container 11, a U-shaped outlet pipe 12 and an inlet pipe 13. The U-shaped outlet pipe 12 has an oil pickup hole 14 and a gas pickup hole 12b for sucking gas at the time of starting. Has been drilled. Closed container 11
A liquid refrigerant L containing refrigerating machine oil is stored in the inner bottom portion.

The gas refrigerant from the evaporator 5 enters the closed container 11 through the inlet pipe 13, and refrigerating machine oil and liquid refrigerant contained in the gas refrigerant are separated therein. Then, only the gas refrigerant enters the U-shaped outlet pipe 12 through the suction port 12a and is sucked into the compressor 1 through the U-shaped outlet pipe 12. Refrigerating machine oil or liquid refrigerant separated from the gas refrigerant is stored in the bottom of the closed container 11, enters the outlet pipe 12 in small amounts from the oil pickup hole 14, and is accompanied by the gas refrigerant flowing through the compressor. Inhaled to 1.

[0005]

In the conventional refrigeration system described above, since the low-temperature gas refrigerant evaporated and vaporized in the evaporator 5 flows into the closed container 11 of the accumulator 10, the closed container 11 has an outer surface. Water in the air will condense and the surface will corrode. In order to deal with this, the closed container 11 is surrounded by a heat insulating material and the surface of the closed container 11 is subjected to an anticorrosion treatment, but this has a problem that the cost increases. Further, since the accumulator 10 and the receiver 7 are separately arranged,
There is a problem that the refrigerating apparatus becomes large because a space for installing these is required individually.

[0006]

The present invention has been invented to solve the above-mentioned problems, and the gist of the invention is to provide a compressor, a condenser, a receiver, an expansion means, an evaporator and an accumulator. In a refrigerating apparatus in which the refrigerant circulates in this order, a tank surrounding the container of the accumulator is provided, and a supply pipe for introducing the liquid refrigerant from the condenser into the cavity limited by the container and the tank. A refrigerating apparatus is characterized in that a receiver is formed by connecting an outflow pipe for guiding the liquid refrigerant in the cavity to the expansion means.

[0007]

In the present invention, since the liquid refrigerant from the condenser enters the cavity and is temporarily stored therein, it exchanges heat with the low temperature refrigerant in the closed container. Supercooled by.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. A tank 15 that surrounds the closed container 11 of the accumulator 10 is provided, and a cavity limited by the closed container 11 and the tank 15.
By connecting a supply pipe 17 for introducing the liquid refrigerant from the condenser 2 to the upper part of 16 and connecting an outflow pipe 18 for guiding the liquid refrigerant in the cavity 16 to the expansion means 4 to the lower part of the cavity 16. The receiver 20 is configured. Other configurations are similar to those of the conventional one shown in FIG. 3, and corresponding members are designated by the same reference numerals.

Thus, the liquid refrigerant condensed in the condenser 2 enters the cavity 16 from the supply pipe 17 and is temporarily stored therein, and is temporarily stored therein. And is cooled by exchanging heat with the gas refrigerant. After that, the outflow pipe
It is sent from 18 to the expansion means 4.

Thus, since the cold heat that has been diffused into the atmosphere from the closed container 11 of the accumulator 10 can be effectively utilized to supercool the liquid refrigerant condensed in the condenser 2, the Mollier diagram of FIG. 2 is obtained. As shown in, the refrigerating capacity of the refrigerating apparatus can be greatly improved as compared with the conventional one. The closed container 11 is a tank.
Since it is surrounded by 15, it is not necessary to perform anticorrosion treatment on the outer surface of the closed container 11.

[0011]

According to the present invention, the liquid refrigerant from the condenser is supercooled by exchanging heat with the low temperature refrigerant in the closed container while being temporarily stored in the cavity. The refrigerating capacity of the refrigerating apparatus can be improved by effectively utilizing the cold heat radiated from the outer surface of the closed container. Further, since the closed container is surrounded by the tank, it is not necessary to perform anticorrosion treatment on the outer surface of the closed container. Also, since the accumulator and receiver are integrated,
These require less installation space.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a Mollier diagram of the above embodiment.

FIG. 3 is a refrigerant circuit diagram of a conventional air conditioner.

[Explanation of symbols]

 1 compressor 2 condenser 4 expansion means 5 evaporator 10 accumulator 11 closed container 13 inlet pipe 14 outlet pipe 20 receiver 15 tank 16 cavity 17 liquid refrigerant supply pipe 18 liquid refrigerant outflow pipe

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[Procedure amendment]

[Submission date] October 29, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of reference numerals] 1 compressor 2 condenser 4 expansion means 5 evaporator 10 accumulator 11 closed container 13 inlet pipe 12 outlet pipe 20 receiver 15 tank 16 cavity 17 liquid refrigerant supply pipe 18 liquid refrigerant outflow pipe

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A compressor, a condenser, a receiver, an expansion means,
In a refrigeration system in which a refrigerant circulates through an evaporator and an accumulator in this order, a tank surrounding a container of the accumulator is provided, and the liquid refrigerant from the condenser is provided in a cavity limited by the container and the tank. A refrigerating apparatus characterized in that a receiver is formed by connecting a supply pipe to be introduced and an outflow pipe for guiding the liquid refrigerant in the cavity to the expansion means.