KR20110081562A

KR20110081562A - Refrigerator

Info

Publication number: KR20110081562A
Application number: KR1020100001780A
Authority: KR
Inventors: 임원호
Original assignee: 위니아만도 주식회사
Priority date: 2010-01-08
Filing date: 2010-01-08
Publication date: 2011-07-14

Abstract

PURPOSE: A refrigerator is provided to collect oil necessary for driving a compressor through an oil storage part installed in a connection pipe and to improve the performance of an evaporator by preventing the inflow of oil into the evaporator. CONSTITUTION: A refrigerator comprises a compressor(1), a first evaporator(4), a suction tube(10), a first connection pipe(110). The first evaporator is located under the compressor. The suction tube delivers the refrigerant discharged from the first evaporator into the compressor. The first connection pipe guides the refrigerant discharged from the first evaporator to pass through the suction tube. The first connection pipe comprises an inflow part(110c) for drawing in the refrigerant discharged from the first evaporator, a bent part(110b) bent upward, and an oil storage part(110a) which collects oil when storages are partially off.

Description

Refrigerator {Refrigerator}

The present invention relates to a refrigerator including a connection pipe for introducing a refrigerant discharged from an evaporator into a compressor.

Conventional refrigerators include a compressor (1) installed in a machine room, a first evaporator (4) located under the compressor (1), a second evaporator (5) located under the first evaporator (4), And a third evaporator 6 located below the second evaporator 6.

In addition, the suction pipe 10 allows the refrigerant discharged from the evaporators 11, 12, 13 to flow into the compressor 1, and the refrigerant discharged from the first evaporator 4 passes through the suction tube 10. Fourth connecting pipe (11), the second connecting pipe (12) allowing the refrigerant discharged from the second evaporator (5) to pass through the suction pipe (10), and the discharge from the third evaporator (6) And a third connecting pipe 13 through which the refrigerant passes through the suction pipe 10.

As shown in FIG. 1, in the conventional refrigerator, the suction pipe 10 has one letter, and the fourth connection pipe 11, the second connection pipe 12, and the third connection pipe 13 are described above. It is branched from the suction pipe 10.

The first evaporator 4 and the second evaporator 5 are turned on, the third evaporator 6 is turned off, or the first evaporator 4 is turned on, and the second evaporator 5 and the When the third evaporator 6 is turned off, oil flows into the third evaporator 6 by gravity, and oil is not recovered by the compressor 1 and stays in the third evaporator 6.

This conventional refrigerator has a problem that the amount of oil recovery required for driving the compressor 1 is insufficient, and the performance of the compressor 1 is lowered.

In addition, in order to recover the oil to the compressor (1), since the evaporator must be turned on at a predetermined interval, the temperature of the evaporator is lowered, the storage temperature of the refrigerator is lowered, there is a problem that the storage stored in the refrigerator is damaged.

The present invention has been made in order to solve the above-mentioned problems, including the oil reservoir in the connecting pipe to recover the oil required to drive the compressor.

The refrigerator of the present invention for achieving the above object, the compressor, a first evaporator located below the compressor, a suction pipe for allowing the refrigerant discharged from the first evaporator to be introduced into the compressor, and the first evaporator It includes a first connecting pipe for allowing the refrigerant discharged from the passing through the suction pipe.

The first connection pipe may include an inlet for introducing a refrigerant discharged from the first evaporator, a bent upwardly bent, and an oil storage part for recovering oil when a part of the reservoir is turned off.

In addition, a second evaporator positioned below the first evaporator, and a second connecting tube for allowing the refrigerant discharged from the second evaporator to pass through the suction pipe, a third located below the second evaporator And an evaporator and a third connecting pipe allowing the refrigerant discharged from the third evaporator to pass through the suction pipe.

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

Since no oil flows into the evaporator, the performance of the evaporator can be improved.

Even when a large number of evaporators, such as a second evaporator or a third evaporator, are installed, oil does not flow into the evaporator.

1 is a schematic view of a conventional refrigerator.
2 is a schematic view of a refrigerator according to a preferred embodiment of the present invention.

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 according to a preferred embodiment of the present invention.

The refrigerator applied to this invention is a refrigerator in which the machine room was installed in the upper part.

As shown in FIG. 2, the refrigerator of the present invention includes a machine room in which a compressor 1 and a condenser 2 are installed, a first reservoir installed at a lower portion of the machine room, and a first evaporator installed at an outer wall of the first reservoir. (4), a suction pipe (10) through which the refrigerant discharged from the first evaporator (4) flows into the compressor (1), and a refrigerant discharged from the first evaporator (4) is connected to the suction pipe (10). The first connecting pipe 110 to pass through, the step valve 3 for discharging the refrigerant passing through the condenser 2 to the evaporator (4), and the refrigerant passing through the step valve (3) It comprises a first flow path (7) flowing into the first evaporator (4).

The refrigerator includes a second evaporator 5 positioned below the first evaporator 4 and a second connecting pipe 12 through which the refrigerant discharged from the second evaporator 5 passes through the suction pipe 10. And a second flow path 8 through which the refrigerant passing through the step valve 3 flows into the second evaporator 5.

In addition, a third evaporator 6 positioned below the second evaporator 5 and a third connecting pipe 13 through which the refrigerant discharged from the third evaporator 6 passes through the suction pipe 10. And a third passage 9 through which the refrigerant passing through the step valve 3 flows into the third evaporator 6.

The step valve 3 means a step valve of the prior art.

The first connection pipe 110 includes an inlet 110c for introducing the refrigerant discharged from the first evaporator, a bent portion 110b bent upward, and an oil storage unit 110a for recovering oil when some of the reservoirs are turned off. ).

The inlet 110c has one side connected to the first evaporator 4 and the other side connected to the bent part 110b.

The bent portion 110b is an inverted U-shape, one side of which is connected to the inlet 110c and the other side of the bent portion 110b to the oil reservoir 110a.

One side of the oil storage unit 110a is connected to the bent portion 110b, and the other side thereof is connected to the suction pipe 10.

The oil is separated from the oil while the refrigerant falls vertically from the other side of the bent part 110b and is stored in the oil storage part 110a.

Therefore, the oil does not flow into the second evaporator 6 or the third evaporator 7 located below the first evaporator 4, and there is an advantage of providing the oil necessary for driving the compressor 1.

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

When the first evaporator 4 and the third evaporator 6 are turned on and the second evaporator 5 is turned off, the compressor 1 is operated so that the first flow passage 7 and the third flow passage 9 are closed. It opens and the second flow path 8 closes.

The refrigerant passing through the compressor (1) and passing through the condenser (2) passes through the first passage (7) and the third passage (9) in an open state, so that the first evaporator (4) and the third When entering the compressor 1 via the evaporator 6, the oil stored in the oil storage unit 110a is recovered to the compressor (1).

When the first evaporator 4 and the second evaporator 5 are turned on and the third evaporator 6 is turned off, the compressor 1 is operated so that the first flow passage 7 and the second flow passage 6 are closed. It opens and the third flow path 7 closes.

The refrigerant passing through the compressor (1) and the condenser (2) passes through the first passage (7) and the second passage (8) in an open state, so that the first evaporator (4) and the second When entering the compressor 1 via the evaporator 5, the oil stored in the oil storage unit 110a is recovered to the compressor (1).

When the first evaporator 4 is turned on and the second evaporator 5 and the third evaporator 6 are turned off, the compressor 1 is operated to open the first flow passage 7 and the second flow passage 8. And the third passage 9 is closed.

When the refrigerant passing through the condenser 2 through the compressor 1 passes through the first passage 7 in an open state and enters the compressor 1 through the first evaporator 4, oil Oil stored in the storage unit 110a is recovered to the compressor 1.

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 according to the present invention is particularly suitable for a refrigerator having an upper machine room or a plurality of evaporators.

1: compressor 2: condenser
3: step valve 4: first evaporator
5: second evaporator 6: third evaporator
7: first euro 8: second euro
9: 3rd euro 10: suction pipe
11: fourth connector 12: second connector
13: third connector 110: first connector
110a: oil reservoir 110b: bent portion
110c: inlet

Claims

compressor;
A first evaporator located below the compressor;
A suction pipe through which the refrigerant discharged from the first evaporator flows into the compressor;
And a first connecting pipe allowing the refrigerant discharged from the first evaporator to pass through the suction pipe.
The first connection pipe is a refrigerator, characterized in that it comprises an inlet for introducing the refrigerant discharged from the first evaporator, a bent upwardly bent, and an oil reservoir for recovering oil when some of the reservoir OFF.

The method of claim 1,
And a second evaporator positioned below the first evaporator, and a second connecting tube allowing the refrigerant discharged from the second evaporator to pass through the suction pipe.

The method of claim 2,
And a third evaporator positioned below the second evaporator, and a third connecting tube allowing the refrigerant discharged from the third evaporator to pass through the suction pipe.