JP2590694Y2 - Oil separation equipment for refrigerator refrigerant liquid - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation device for separating oil mixed in a refrigerant liquid of a refrigerator.

[0002]

2. Description of the Related Art The refrigerant of a refrigerator has the property of mixing or mixing oil such as lubricating oil. When oil is mixed, the efficiency of each device of the refrigerator is reduced or the lubricating oil is emulsified.

The refrigerant discharged from the refrigerator has a high temperature and enters the condenser together with the oil, where the oil is mixed with the refrigerant liquid and sent to the evaporator. In the evaporator, the refrigerant liquid evaporates, and the oil remains and accumulates at the bottom of the evaporator and is fixed, which makes it difficult to extract the oil. Therefore, the oil must be drained before this situation occurs.

FIG. 2 is a system diagram of a conventional oil separating device for a refrigerant liquid of a refrigerator. The high-temperature gas exiting the refrigerator 1 is sent to the condenser 2 where it condenses and enters the evaporator 3. The refrigerant liquid in the evaporator 3 containing the oil is collected in a refrigerant separation container 13 and heated by an electric heater 14 to separate the oil. The evaporated refrigerant gas is returned to the suction line 11 of the refrigerator. It is returned to the lubricating oil line of the refrigerator 1 by the return pump 6.

[0005]

SUMMARY OF THE INVENTION In the above-described conventional apparatus for recovering a refrigerant from a conventional evaporator into a refrigerant separation vessel and heating it with an electric heater, the conventional apparatus consumes electricity for a heating source and operates a refrigerator. Squeezing expenses. Especially when heating continuously, the heating cost cannot be ignored.

The present invention has been made to solve this drawback.

[0007]

Means for Solving the Problems The present invention of refrigeration refrigerant liquid oil separator device, the evaporator portion, mixed refrigerant liquid oil yield
Connected via a collection pipe with an on-off valve
A refrigerant separation container that collects the same refrigerant liquid, and a high-temperature refrigerant gas that is provided at the bottom of the refrigerant separation container and compressed by a refrigerator.
A perforated pipe that blows out into the collected refrigerant liquid, a refrigerant gas return pipe that connects an upper part of the refrigerant separation container to a suction line of a refrigerator, and a lower part of the refrigerant separation container that is connected to a lubrication oil line of the refrigerator. An oil return pipe for connection is provided.

[0008]

According to the present invention, a high-temperature refrigerant gas compressed by a refrigerator is blown out of a perforated pipe into the bottom of a refrigerant separation container in which an oil-mixed refrigerant liquid is recovered from an evaporator. As a result, the refrigerant liquid in the refrigerant separation container is heated and its temperature rises, and the refrigerant liquid becomes a refrigerant gas and returns from the upper part of the refrigerant separation container to the refrigerator suction line via the refrigerant gas return pipe. On the other hand, the oil separated from the refrigerant in the refrigerant separation container is returned to the lubricating oil line of the refrigerator through the oil return pipe.

As described above, the present invention utilizes the high-temperature refrigerant gas compressed by the refrigerator and cools the refrigerant from the evaporator.
Since oil is separated in the medium, the oil separation device is downsized.
By that, to reduce the equipment cost, and can be separated oil from the refrigerant fluid without applying heating costs.

[0010]

FIG. 1 shows an embodiment of the present invention. A refrigerator 1 is connected to the condenser 2 by a discharge pipe 7. Reference numeral 3 denotes an evaporator to which the refrigerant liquid is supplied from the condenser 2, and the refrigerant gas evaporated by the evaporator 3 returns to the refrigerator 1 through the suction pipe 11 of the refrigerator.

Reference numeral 4 denotes a refrigerant separation vessel connected to a lower part of the evaporator 3 through a recovery pipe 8 having a valve 8a. A porous pipe 5 is disposed substantially horizontally at the bottom of the refrigerant separation vessel 4. ing. One end of the perforated pipe 5 is connected to a branch pipe 9 branched from a discharge pipe 7 of the refrigerator and having a valve 9a, and the other end is closed.

The upper part of the refrigerant separation vessel 4 is connected to a suction pipe 11 of a refrigerator through a refrigerant gas return pipe 10 having a valve 10a, and the lower part thereof is connected to an oil return pipe 12 having an oil return pump 6. To the lubricating oil line of the refrigerator 1.

In the present embodiment, the refrigerant gas mixed with the oil which has been compressed by the refrigerator 1 and has become a high-temperature gas enters the condenser 2 through the discharge pipe 7 together with the oil and is cooled to become a refrigerant liquid. It is sent to the evaporator 3. Although the refrigerant liquid evaporates in the evaporator 3, the oil remains in the evaporator 3 and accumulates in a state mixed with a part of the refrigerant liquid.

The oil-mixed refrigerant liquid is supplied to the refrigerant separation container 4.
Through the collection tube 8. After closing the valve 8a of the recovery pipe 8, the valve 9a of the branch pipe 9 and the valve 1 of the refrigerant gas return pipe 10 are closed.
0a is opened and the refrigerator 1 is placed in the collected refrigerant liquid.
The high-temperature refrigerant gas compressed by the refrigerator 1 through the discharge pipe 7 and the branch pipe 9 is blown out of the perforated pipe 5 provided at the bottom of the refrigerant separation container 4.

As a result, the oil-mixed refrigerant liquid is heated and separated into refrigerant and oil, and the refrigerant turns into a gas from the upper part of the separation vessel 4 through the refrigerant gas return pipe 10 to the suction pipe 11 of the refrigerator 1. Return. The separated oil is sucked into the oil return pump 6 from the lower part of the refrigerant separation container 4 and returns to the lubrication line of the refrigerator 1 through the oil return pipe 12.

As described above, in this embodiment, the high-temperature refrigerant gas compressed by the refrigerator is blown out from the perforated pipe 5 in the refrigerant separation container 4 and the refrigerant liquid and oil are separated in the refrigerant separation container 4. Can be performed, and the oil can be separated from the refrigerant liquid without using a heating source such as an electric heater as in the related art, reducing equipment costs, and without adding heating costs.

[0017]

According to the invention present invention, the Ru can remove a heat source such as an electric heater for separating the refrigerant liquid and the oil co
In order to separate oil in the refrigerant liquid from inside the evaporator,
Since the oil separation device is reduced in size , the equipment cost is reduced, and the heating cost, which is a burden on the operation cost of the refrigerator, can be eliminated, thereby contributing to energy saving.

[Brief description of the drawings]

FIG. 1 is a system diagram of an embodiment of the present invention.

FIG. 2 is a system diagram of a conventional oil separation device for a refrigerant liquid of a refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Evaporator 4 Refrigerant separation container 5 Perforated pipe 6 Oil return pump 7 Discharge pipe 8 Recovery pipe 9 Branch pipe 10 Refrigerant gas return pipe 11 Suction pipe 12 Oil return pipe

Claims (1)

(57) [Scope of request for utility model registration] 1. A in evaporator unit, mixed refrigerant liquid oil yield
Connected via a collection pipe with an on-off valve
A refrigerant separation container that collects the same refrigerant liquid, and a high-temperature refrigerant gas that is provided at the bottom of the refrigerant separation container and compressed by a refrigerator.
A perforated pipe that blows out into the collected refrigerant liquid, a refrigerant gas return pipe that connects an upper part of the refrigerant separation container to a suction line of a refrigerator, and a lower part of the refrigerant separation container that is connected to a lubrication oil line of the refrigerator. An oil separation device for a refrigerant liquid of a refrigerator, comprising an oil return pipe connected thereto.