KR20110067698A

KR20110067698A - An oil recovery structure in a refrigerator

Info

Publication number: KR20110067698A
Application number: KR1020090124395A
Authority: KR
Inventors: 김해성
Original assignee: 위니아만도 주식회사
Priority date: 2009-12-15
Filing date: 2009-12-15
Publication date: 2011-06-22

Abstract

PURPOSE: A structure for collecting oil from a refrigerator is provided to enable oil to be smoothly collected in a compressor and enhance the efficiency of a refrigerator. CONSTITUTION: A structure for collecting oil from a refrigerator comprises an accumulator(5), two or more evaporators, and a connecting pipe. The evaporators are connected to the accumulator. The evaporators comprise a first evaporator(3) and a second evaporator(4), and refrigerant discharged from the evaporators through the connecting pipe flows into the accumulator. The connecting pipe comprises a first connecting pipe(60) and a second connecting pipe(70). Refrigerant discharged from the first evaporator flows into the accumulator through the first connecting pipe. Refrigerant discharged from the second evaporator flows into the accumulator through the second connecting pipe.

Description

{An Oil Recovery Structure in a refrigerator}

The present invention relates to a refrigerator oil recovery structure.

In the conventional refrigerator oil recovery structure, as shown in FIG. 1, the compressor 1 installed in the machine room, the first evaporator 3 disposed under the machine room, the compressor 1 and the first evaporator ( 3) an accumulator 5 disposed therebetween, a connecting pipe 6 connecting the accumulator 5 and the first evaporator 3, and a second evaporator disposed below the first evaporator 3 ( 4), a branch pipe (7) connecting the connecting pipe (6) and the second evaporator (4), and a check valve (8) disposed at the branch pipe (7).

This refrigerator oil recovery structure has oil stored in the accumulator 5 when the first evaporator 3 and the second evaporator 4 are both turned on or off with or without the check valve 8. Is recovered smoothly.

When the first evaporator 3 is turned on and the second evaporator 4 is turned off, oil is accumulated at the top of the check valve 8, and oil accumulated at restart is recovered to the compressor 1.

However, when there is no check valve 8 in the branch pipe 7, oil flows to the second evaporator 4 by gravity, and oil is not recovered to the compressor 1, and the second evaporator 4 There is a problem that the stay of the inside, the performance of the evaporator is lowered, the efficiency of the refrigerator is lowered.

In addition, when the second evaporator 4 is turned off, the second evaporator 4 must be turned on at a predetermined interval in order to recover oil to the compressor 1, so that the temperature of the second evaporator 4 is lowered, thereby reducing the temperature of the refrigerator. As the storage temperature is lowered, there is a problem that the storage stored in the refrigerator is damaged.

The present invention has been made to solve the above-described problem, and smooth oil recovery to the compressor even without the check valve.

Refrigerator oil recovery structure of the present invention for achieving the above object includes an accumulator, at least two or more evaporators connected to the accumulator, and a connecting pipe for introducing the refrigerant discharged from the evaporator to the accumulator.

The evaporator includes a first evaporator and a second evaporator, and the connection pipe includes a first connection pipe through which the refrigerant discharged from the first evaporator is introduced into the accumulator, and the refrigerant discharged from the second evaporator. Including a second connecting pipe to be introduced into, characterized in that the first connecting pipe and the second connecting pipe is individually connected to the accumulator.

According to the refrigerator oil recovery structure of the present invention as described above, there are the following effects.

A first connector connecting a first evaporator and a second connector connecting the accumulator and the second evaporator, wherein the first evaporator is turned on and the second evaporator is turned off, or the first evaporator is Is OFF, even if the second evaporator is turned ON or both are turned OFF, the oil can be smoothly recovered by the compressor, and the efficiency of the refrigerator can be improved.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, among the configurations of the present invention to be described below, the same configuration as the prior art will be referred to the above-described prior art, and a detailed description thereof will be omitted.

2 is a schematic diagram of a refrigerator oil recovery structure according to a preferred embodiment of the present invention.

The refrigerator to be applied to the present invention includes a machine room in which a compressor 1 and a condenser 2 are installed, a first storage room provided below the machine room, a second storage room arranged below the first storage room, and the first storage room. A first evaporator 3 provided on the outer wall of the reservoir, a second evaporator 4 provided on the outer wall of the second reservoir, and an accumulator 5 disposed between the compressor 1 and the first evaporator 3 It includes.

A condenser 3 for condensing the high temperature and high pressure gas refrigerant discharged from the compressor 1 to a high temperature and high pressure liquid refrigerant, and expanding the high temperature and high pressure liquid refrigerant discharged from the condenser 3 to obtain a low temperature and low pressure. An expansion device (not shown) for changing into a liquid refrigerant, and an evaporator (3, 4) for phase-changing the low temperature and low pressure liquid refrigerant passing through the expansion device with ambient air to change into a low temperature low pressure gas refrigerant. Include.

The gas refrigerant passing through the evaporators 3 and 4 is a mixed refrigerant including some liquid refrigerant, and the accumulator 5 separating the liquid refrigerant from the mixed refrigerant so that only the gas refrigerant can be sent to the compressor 1 is provided. It is arranged between the compressor 1 and the evaporators 3, 4.

As shown in FIG. 2, the refrigerator oil recovery structure of the present invention includes an accumulator 5, at least two evaporators 3 and 4 connected to the accumulator 5, and the evaporators 3 and 4. It comprises a connecting pipe (60, 70) for introducing the refrigerant discharged from the accumulator (5).

The evaporators 3, 4 comprise a first evaporator 3 and a second evaporator 4.

The connection pipes 60 and 70 may include a first connection pipe 60 allowing the refrigerant discharged from the first evaporator 3 to flow into the accumulator 5, and the refrigerant discharged from the second evaporator 4. It includes a second connecting pipe (70) for introducing into the accumulator (5), the first connecting pipe 60 and the second connecting pipe (70) are individually connected to the accumulator (5) .

The outlet of the first connecting pipe 60 and the outlet of the second connecting pipe 70 are configured separately in the accumulator 5, so that oil is not required to be installed even without a check valve (not shown). ) Has the advantage that the smooth recovery.

The operation of the present embodiment having the above-described configuration will be described below.

When the first evaporator 3 is turned on and the second evaporator 4 is turned off, the compressor 1 is operated, and the refrigerant passing through the compressor 1 and passing through the condenser 2 is the first evaporator. It passes through (3) and flows into the accumulator (5), and oil is recovered by the said compressor (1).

When the first evaporator 3 is turned off and the second evaporator 4 is turned on, the compressor 1 is operated, and the refrigerant passing through the compressor 1 and passing through the condenser 2 is the second evaporator. It passes through (4) and flows into the accumulator (5), and oil is recovered by the said compressor (1).

In this process, there is an advantage that the oil is smoothly recovered to the compressor 1 without flowing into the evaporators 3 and 4 due to gravity.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

As described above, the refrigerator oil recovery structure according to the present invention is particularly suitable for a refrigerator having an upper machine room or a plurality of evaporators.

1 is a schematic view of a conventional refrigerator oil recovery structure.

2 is a schematic view of a refrigerator oil recovery structure according to a preferred embodiment of the present invention.

** Description of symbols for the main parts of the drawing **

1: compressor 2: condenser

3: first evaporator 4: second evaporator

5: accumulator 6: connector

7: branch pipe 60: first connector

70: second connector

Claims

Accumulators;

At least two evaporators connected to the accumulator;

It includes a connecting pipe for introducing the refrigerant discharged from the evaporator to the accumulator,

The evaporator includes a first evaporator and a second evaporator,

The connecting tube includes a first connecting tube for allowing the refrigerant discharged from the first evaporator to be introduced into the accumulator, and a second connecting tube for allowing the refrigerant discharged from the second evaporator to be introduced into the accumulator,

The refrigerator oil recovery structure, characterized in that the first connecting pipe and the second connecting pipe are individually connected to the accumulator.