JPH1038419A - Freezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent abnormal sound from being produced upon starting a compressor by forming vertically at a predetermined interval a plurality of holes in a portion of an outflow pipe which is inserted into a container, and further forming the same number of holes at a specific angle. SOLUTION: In an accumulator 31, an inflow pipe 32 is inserted into an upper part of a container 33 and an outflow pipe 34 is inserted into a lower part of the container 33, and a plurality of holes 35 are formed at a predetermined interval vertically in a portion of the outflow pipe 34 which is inserted into the container 33, and further holes 35 of the same number are formed opposing by 180 degree the holes 35. Upon interruption of operation of the compressor 1 in ordinary on-off operation or upon interruption of the operation of the compressor 1 during defrosting where frost adhering to an evaporator 25 in the operation is melted, freezer oil revesely flows through a suction pipe 21 owing to a difference between high and low pressure upon interruption of the compressor 1. However, a liquid refrigerant is gasified owing to the holes 35, and hence the freezer oil residing upon the interruption of the compressor 1 is rapidly returned to the compressor 1 and abnormal sound from the accumulator 31 upon starting of the compressor 1 is moderated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulator provided near a compressor such as a refrigerator or the like, in which an abnormal sound is generated from the accumulator when the compressor is restarted due to refrigerating machine oil flowing backward from the compressor when the compressor is stopped. The present invention relates to a refrigeration device to be prevented.

[0002]

2. Description of the Related Art A conventional refrigeration system will be described below with reference to the drawings. FIG. 3 is a sectional view of a horizontal rotary compressor disclosed in Japanese Patent Application Laid-Open No. 2-173386, and FIG. 4 is a piping diagram of a refrigeration system to which the horizontal rotary compressor is applied.

[0003] Reference numeral 1 denotes a substantially cylindrical compressor which is long in the lateral direction and accommodates an electric element 4 comprising a stator 2 and a rotor 3 and a compression element 5 driven by the electric element 4. Numeral 6 denotes lubricating oil which is accumulated below the compressor 1.

The compression element is tightly attached to both sides of the cylinder 7 by a cylinder 7, a main side housing 8 and a sub side housing 9, and forms a compression chamber 10. Reference numeral 14 denotes a crankshaft connected to the roller 3 and has an eccentric portion 15.

Reference numeral 11 denotes a roller fitted to the eccentric part 15, and
It is inscribed in the compression chamber 10. Numeral 12 denotes a vane which is pressed against the roller 11 by a spring 13 to keep the compression chamber high and low.

Reference numeral 18 denotes an oil supply pipe, one end of which enters the lubricating oil 6 and a coil spring 19 fixed to the crankshaft 14 is disposed inside.

Reference numeral 20 denotes a discharge valve provided in the sub-side housing. Reference numeral 17 denotes a discharge cover, and a cup-shaped portion of the discharge cover 17 is formed as a discharge chamber 16.

The oil supply pipe 18 is integrated with the discharge cover 17 and is press-fitted and fixed to the convex portion 9a of the sub-side housing 9. Reference numeral 21 denotes a suction pipe which penetrates through the compressor 1 and is located above the lubricating oil 6 and is press-fitted into a through-hole 17 a communicating with the compression chamber 10 of the cylinder 7 provided in the sub-side housing 9.

[0009] A condenser 23 is connected to the discharge pipe 22, and a decompressor 24 and an evaporator 25 formed by a capillary tube or the like.
And a connecting pipe 26 connecting the evaporator 25 and the suction pipe 21 in a ring shape. An accumulator 27 for reducing the liquid return from the compressor of the connecting pipe 26 is provided. 27b, an opening 27c for oil return provided at the root of the outflow pipe, and a liquid reservoir 27d constitute a refrigeration system.

[0010] The operation of the refrigeration system configured as described above will be described below. The rotation of the rotor 3 constituting the electric element 4 is transmitted to the crankshaft 14 and the eccentric portion 1
Rotational motion is given to the roller fitted in 5, and the refrigerant sucked from the suction pipe 21 is compressed in the compression chamber 10.

The rotation of the rotor 3 also gives a rotational movement to a coil spring 19 fixed to one end of the crankshaft 14, and the lubricating oil 6 accumulated under the compressor 1 by the rotational centrifugal force is removed by the crankshaft 14. The feed to the compression element 5 is effected by the transfer to the side.

The refrigerant compressed in the compression chamber 10 is discharged from a discharge valve 20 provided in the sub-side housing 9 into the discharge chamber 16 to mute the sound, and is discharged from the discharge cover 17 into the compressor 1. .

The released gas refrigerant is liquefied in a condenser 23 through a discharge pipe 22 and is decompressed while passing through a decompressor 24 composed of a capillary tube or the like, and is evaporated at a predetermined temperature in an evaporator 25. Excess refrigerant liquid is sucked in by the accumulator 27, and the oil continues to cool by repeating a cycle of returning to the compressor side from the oil return opening 27c.

[0014]

However, in the above-described conventional structure, the suction pipe 21 is provided in the through hole 17a which is formed in close contact with the main side housing 8 and the sub side housing 9 on both sides of the cylinder 7 and communicates with the compression chamber 10. Since it is press-fitted, the clearance in the assembly between the sliding parts of the rollers 11 and the vanes 12 and the compression chamber 10 formed in close contact with both sides of the cylinder 7 by the main side housing 8 and the sub side housing 9. The portion becomes a passage, and a phenomenon occurs in which the refrigerating machine oil 6 flows backward through the suction pipe 21 and accumulates in the accumulator 27 due to the high / low pressure difference when the compressor is stopped.

This phenomenon occurs as the clearance in assembly increases and as the pressure of the applied refrigerant increases (for example, the refrigerant R
MP39 is more likely to occur than 12).

Refrigeration oil 6 accumulated in the accumulator 27
The vibrator was intensely agitated by the pressure change at the time of starting the compressor, and during the vigorous agitation, an abnormal sound was generated from the accumulator 27, resulting in noise and impairing the merchantability.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a refrigeration apparatus that does not easily generate abnormal noise when the compressor is started.

[0018]

According to the present invention, there is provided a refrigeration apparatus comprising: a container; an inflow pipe connected to an upper part of the vessel; an outflow pipe inserted from a lower part of the vessel; A refrigeration apparatus having a structure in which a plurality of holes are attached at regular intervals in the vertical direction to a portion inserted therein, and the same number of holes are attached at 180 degrees to each other.

Further, the container, an inflow pipe connected to the upper portion of the container, an outflow pipe connected to the lower portion of the container, and a hole gradually enlarged from below in a portion of the outflow pipe inserted into the container. A refrigeration system having a structure in which a plurality of are mounted at regular intervals in the vertical direction, and the same shape and the same number of holes are further mounted facing 180 degrees.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a compressor, a condenser, a decompressor, an evaporator, and an accumulator provided near the compressor are sequentially connected in a ring shape. The accumulator includes a container, an inflow tube connected to an upper portion of the container, an outflow tube inserted from the lower portion of the container, and a plurality of holes formed at predetermined intervals in a vertical direction in a portion of the outflow tube inserted into the container. It is attached and has the same number of holes 180 degrees opposite to each other, and has the effect of gasifying the liquid refrigerant and quickly returning the refrigerating machine oil accumulated when the compressor is stopped to the compressor when the compressor is started.

Thus, the generation of abnormal sound from the accumulator during the vigorous stirring can be mitigated, and the disadvantage that noise is generated and the commercial value is impaired can be prevented.

According to a second aspect of the present invention, a compressor, a condenser, a decompressor, an evaporator, and an accumulator provided near the compressor are sequentially connected in a ring shape, and the accumulator is connected to a container. An inflow pipe connected to the upper part of the vessel, an outflow pipe inserted from the lower part of the vessel, and a plurality of holes gradually enlarged from below in a part of the outflow pipe inserted into the vessel at regular intervals in the vertical direction. It has the same shape and the same number of holes 180 degrees opposite to each other, and it can gasify the liquid refrigerant and quickly return the refrigerating machine oil accumulated when the compressor is stopped to the compressor when the compressor starts up. It is possible to alleviate the generation of noise and prevent a disadvantage that noise is generated and the merchantability is impaired.

An embodiment of a refrigeration apparatus according to the present invention will be described with reference to FIGS. The same components as those in the related art are denoted by the same reference numerals, and detailed description is omitted.

(Embodiment 1) FIG. 1 is a piping diagram of a refrigeration cycle according to an embodiment of the present invention. Accumulator 31
The inflow pipe 32 is inserted into the upper portion of the container 33, the outflow pipe 34 is inserted into the lower part of the container 33, and a plurality of holes 35 are formed at predetermined intervals in the vertical direction in the portion of the outflow pipe 34 inserted into the container 33.
Are attached, and the same number of holes 35 are further attached at 180 degrees to each other.

The operation of the refrigeration system configured as described above will be described below. The gas refrigerant discharged from the compressor 1 passes through a discharge pipe 22, is liquefied in a condenser 23, is decompressed while passing through a decompressor 24 formed of a capillary tube or the like, and is evaporated at a predetermined temperature in an evaporator 25. By repeating the cycle of returning to the suction pipe 21 again, the cooling operation is continued.

When the operation of the compressor 1 is stopped during normal ON-OFF operation, or when the operation of the compressor 1 is stopped during defrost for melting frost adhering to the evaporator 25 during operation, the suction pipe 21 is connected to the main side housing. 8 and the auxiliary side housing 9 are press-fitted into the through holes 17a passing through the compression chambers 10 formed in close contact with both sides of the cylinder 7 so that the rollers 11
When the compressor 1 is stopped, the clearance between the sliding part of the vane 12 and the compression chamber 10 formed in close contact with both sides of the cylinder 7 by the main side housing 8 and the sub side housing 9 is formed. , The refrigerating machine oil 6 flows backward through the suction pipe 21.

However, a plurality of holes 35 are attached to the portion of the outflow pipe 34 constituting the accumulator 31 which is inserted into the container 33 at regular intervals in the vertical direction.
By attaching the same number of holes 35 to each other, the liquid refrigerant is gasified, and the refrigerating machine oil accumulated when the compressor 1 is stopped is quickly returned to the compressor 1 when the compressor 1 is started.

Thus, the generation of abnormal sound from the accumulator 31 at the time of starting the compressor 1 can be mitigated, and the disadvantage that noise is generated and the commercial value is impaired can be prevented.

As described above, the refrigerating apparatus according to the present embodiment comprises the container 33, the inflow pipe 32 connected to the upper part of the vessel 33, the outflow pipe 34 inserted from the lower part of the vessel 33, and the inside of the vessel 33 of the outflow pipe 34. A plurality of holes 35 are attached at regular intervals in the vertical direction to the portion inserted into the
5, the liquid refrigerant is gasified, and the refrigerating machine oil accumulated when the compressor 1 is stopped can be quickly returned to the compressor 1 when the compressor 1 is started, and the generation of abnormal noise can be reduced.

(Embodiment 2) FIG. 2 is a piping diagram of a refrigeration cycle according to a second embodiment of the present invention. An inflow pipe 42 is inserted into the upper part of the container 43 and an outflow pipe 44 is inserted into the lower part of the container 43. , And the same shape facing 180 degrees,
The structure has the same number of holes 45.

With this configuration, the liquid refrigerant is gasified, and the refrigerating machine oil collected when the compressor 1 is stopped is quickly returned to the compressor 1 when the compressor 1 is started. The disadvantage of impairing the merchantability can be prevented.

[0032]

As described above, according to the present invention, a compressor, a condenser, a decompressor, an evaporator, and an accumulator provided near the compressor are sequentially connected in a ring shape, and the accumulator comprises: A container, an inflow pipe connected to the upper part of the vessel, an outflow pipe inserted from the lower part of the vessel, and a plurality of holes provided at predetermined intervals in a vertical direction in a portion of the outflow pipe inserted into the vessel, and further 180 degrees. By adopting a configuration in which the same number of holes are attached to each other, liquid refrigerant is gasified, and refrigeration oil accumulated when the compressor is stopped can be quickly returned to the compressor when the compressor is started. This has the effect of reducing the occurrence of abnormal sound from the accumulator and preventing the drawback that it becomes noise and impairs the merchantability.

Also, holes gradually enlarged from below are formed in the container, the inflow pipe connected to the upper part of the vessel, the outflow pipe inserted from the lower part of the vessel, and the part of the outflow pipe inserted into the vessel. A plurality of holes are attached at regular intervals in the direction, and the same shape and the same number of holes are further attached at 180 degrees opposite to each other, so that the liquid refrigerant is gasified, The compressor can be quickly returned to the compressor, whereby the generation of abnormal sound from the accumulator at the time of starting the compressor can be mitigated, and there is an effect of preventing a drawback that noise is generated and the merchantability is impaired.

[Brief description of the drawings]

FIG. 1 is a schematic refrigeration cycle diagram of a refrigeration apparatus of the present invention.

FIG. 2 is a schematic refrigeration cycle diagram of a refrigeration apparatus according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a conventional rotary compressor.

FIG. 4 is a schematic refrigeration cycle diagram of a conventional refrigeration apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 23 Condenser 24 Decompressor 25 Evaporator 31 Accumulator 32 Inflow pipe 33 Container 34 Outflow pipe 35 hole 42 Inflow pipe 43 Container 44 Outflow pipe 45 hole

Claims (2)

[Claims] 1. A compressor, a condenser, a decompressor, an evaporator, and an accumulator provided in the vicinity of the compressor are sequentially connected in a ring shape, and the accumulator is connected to a container and an upper portion of the container. A structure in which a plurality of holes are attached to the inflow pipe, an outflow pipe inserted from the lower part of the vessel, and a part of the outflow pipe inserted into the vessel at regular intervals in the vertical direction, and furthermore, the same number of holes are attached at 180 ° opposition. A refrigeration apparatus having: 2. A compressor, a condenser, a decompressor, an evaporator, and an accumulator provided near the compressor are sequentially connected in a ring shape, and the accumulator is connected to a container and an upper portion of the container. An inflow pipe, an outflow pipe inserted from the lower part of the container, and a plurality of holes gradually enlarged from below are attached to the portion of the outflow pipe inserted into the container at regular intervals in the vertical direction, and further opposed by 180 degrees. A refrigeration system having the same shape and the same number of holes.