JPH1026442A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of abnormal sound when starting a compressor by providing two and more holes in an area which is inserted in a vessel of a flow-out pipe and covering the whole vessel of this flow-out pipe with a mesh. SOLUTION: The gas refrigerant discharged from a compressor is liquefied in a condenser 23 by way of a discharge pipe 22 and pressure-reduced while passing through a pressure reducer which comprises a capillary tube and so forth and evaporated in an evaporator 25 and returns to a suction pipe 21 once again and continues cooling operation by repeating the aforesaid cycle. At least two holes are provided in an area which is inserted into a vessel 33 of the flow-out pipe 34 which constitutes an accumulator 31. The liquid refrigerant is gasified by covering the whole flow-out pipe 34 with a mesh or the like while a refrigerator oil deposited during the stop of the compressor 1 is returned to the compressor swiftly. This construction makes it possible to relax the generation of abnormal sound emitted from the accumulator 31 during the starting time of the compressor 1 and prevent the sound from turning to a noise which may damage the quality of a merchandise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND 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 refrigeration oil flowing backward from the compressor when the compressor is stopped. The present invention relates to a refrigeration apparatus for preventing refrigeration.

[0002]

2. Description of the Related Art A conventional refrigeration system will be described below with reference to the drawings. FIG. 3 is a cross-sectional view of a horizontal rotary compressor disclosed in Japanese Patent Application Laid-Open No. Sho 62-13095, 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 housed in the compression chamber 10. Reference numeral 12 denotes a vane which is pressed against the roller 11 by a spring 13 to partition the compression chamber 10 into high and low pressures.

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 composed of a capillary tube or the like, and an evaporator 25.
A connecting pipe 26 connecting the evaporator 25 and the suction pipe 21 is sequentially connected in a ring shape. Further, an accumulator 27 for reducing 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 oil is supplied to the compression element 5 by being transferred to the side.

The refrigerant compressed in the compression chamber 10 is discharged from the discharge valve 20 provided in the sub-side housing 9 into the discharge chamber 16 to silence 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 decompressed while passing through a decompressor 24 composed of a capillary tube or the like. The liquid component is absorbed by the accumulator 27, and the oil component continues the cooling action by repeating a cycle of returning to the compressor side from the oil return opening 27c.

[0013]

However, in the above-described conventional structure, the suction pipe 21 is provided in the through hole 17a which is formed in the main side housing 8 and the sub side housing 9 and is in close contact with both sides of the cylinder 7 and communicates with the compression chamber 10. Since it is press-fitted, the clearance between the sliding parts of the rollers 11 and the vanes 12 and the compression chamber 10 formed in close contact with the main side housing 8 and the sub-side housing 9 on both sides of the cylinder 7 constitutes a passage. As a result, 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 is more likely to occur as the clearance in assembly is larger and as the pressure of the applied refrigerant is higher (for example, MP39 than refrigerant R12). The refrigerating machine oil 6 accumulated in the accumulator 27 is violently stirred by the pressure change at the time of starting the compressor, and during the vigorous stirring, an abnormal sound is generated from the accumulator 27, resulting in noise and impairing the merchantability. Was.

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 which does not easily generate an abnormal sound when the compressor is started.

[0015]

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; Has at least two holes in the part inserted inside,
The outlet pipe has a structure in which the entire inside of the container is covered with a mesh or the like.

Further, a container, an inflow pipe connected to an upper portion of the container, an outflow pipe connected to a lower portion of the container, and a mesh or the like provided on the inflow pipe side and the outflow pipe side in the container, Has a desiccant between them.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the above-described configuration,
A container, an inflow pipe connected to an upper part of the vessel, an outflow pipe inserted from the lower part of the vessel, and at least two holes in a part of the outflow pipe inserted into the vessel, Since the entire inside is covered with a mesh or the like, the liquid refrigerant is gasified, and the refrigerating machine oil accumulated when the compressor is stopped is quickly returned 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.

Further, a container, an inflow pipe connected to an upper portion of the container, an outflow pipe connected to a lower portion of the container, and a mesh or the like provided in the container on the inflow pipe side and the outflow pipe side in the container, Since it has a desiccant in between, the liquid refrigerant can be gasified and the refrigerating machine oil accumulated when the compressor is stopped can be quickly returned to the compressor when the compressor is started, so that the occurrence of abnormal noise can be mitigated In addition, it is possible to prevent a drawback that the product becomes impaired due to noise.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a refrigeration apparatus according to the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

(Embodiment 1) FIG. 1 is a piping diagram of a refrigeration cycle according to an embodiment of the present invention.

In the accumulator 31, an inflow pipe 32 is inserted into the upper part of the container 33, an outflow pipe 34 is inserted into the lower part of the container 33, and at least two holes 35 are formed in a part of the outflow pipe 34 inserted into the container 33. And the entire inside of the container 33 of the outflow pipe 34 is covered with a mesh 36 or the like.

The operation of the refrigeration system configured as described above will be described below. The gas refrigerant discharged from the compressor 1 passes through the discharge pipe 22, liquefies in the condenser 23, is decompressed while passing through the decompressor 24 formed of a capillary tube or the like, and evaporates at a predetermined temperature in the 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 defrosting to melt frost adhering to the evaporator 25 during operation, the suction pipe 21 is connected to the main side. Since the housing 11 and the sub-side housing 9 are press-fitted into the through holes 17a communicating with the compression chambers 10 formed in close contact with both sides of the cylinder 7, 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 forms a passage. , The refrigerating machine oil 6 flows backward through the suction pipe 21.

However, at least a portion of the outflow pipe 34 constituting the accumulator 31 which is inserted into the container 33
By having at least three holes 35 and covering the entire inside of the container 33 of the outflow pipe 34 with a mesh 36 or the like, the liquid refrigerant is gasified, and the refrigerating machine oil accumulated when the compressor 1 is stopped is quickly compressed when the compressor 1 is started. Returned to machine 1.

Thus, the occurrence 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 merchantability 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. Has at least two or more holes 35 in the portion inserted into the container, and the entire inside of the container 33 of the outflow pipe 34 is covered with a mesh 36, so that the liquid refrigerant is gasified and accumulated when the compressor 1 is stopped. The refrigerating machine oil can be quickly returned to the compressor 1 when the compressor 1 is started, and the occurrence of abnormal noise can be reduced.

(Embodiment 2) Next, a refrigeration apparatus according to a second embodiment of the present invention will be described with reference to the drawings.
The same components as those in the related art are denoted by the same reference numerals, and detailed description is omitted.

FIG. 2 is a piping diagram of a refrigeration cycle according to a second embodiment of the present invention. A container 43, an inflow pipe 42 connected to the upper part of the container 43, an outflow pipe 44 connected to the lower part of the container 43, and a mesh 45 provided on the inflow pipe 42 side and the outflow pipe 44 side in the container 43 are provided. Desiccant 4 between 45
6 is provided.

According to 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.

[0031]

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: An inlet pipe connected to the container and the upper part of the container, an outlet pipe inserted from the lower part of the container, and at least two holes in a part of the outlet pipe inserted into the container, The entire structure is covered with a mesh or the like, so that the liquid refrigerant can be gasified and the refrigerating machine oil accumulated when the compressor is stopped can be quickly returned to the compressor when the compressor is started. This has the effect of mitigating the generation of abnormal sounds from the vehicle and preventing the drawback of causing noise and deteriorating the merchantability.

Further, a container, an inflow pipe connected to the upper part of the container, an outflow pipe connected to the lower part of the container, and a mesh or the like provided in the container on the inflow pipe side and the outflow pipe side in the container, By having a configuration having a desiccant between, the liquid refrigerant is gasified, and the refrigerating machine oil accumulated when the compressor is stopped can be quickly returned to the compressor when the compressor is started,
Thereby, 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 of causing noise and deteriorating the merchantability.

[Brief description of the drawings]

FIG. 1 is a schematic refrigeration cycle diagram of a refrigeration apparatus according to 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, 42 Inflow pipe 33, 43 Container 34, 44 Outflow pipe 35 Hole 36, 45 Mesh 46 Desiccant

Claims (2)

[Claims] 1. A compressor, a condenser, a decompressor, an evaporator, and an accumulator in the vicinity of the compressor are sequentially connected in a ring shape. The accumulator includes a container, and an inflow pipe connected to an upper portion of the container. And an outflow pipe inserted from the lower part of the container, and at least two or more holes in a portion of the outflow pipe inserted into the container, and having a structure in which the entire inside of the outflow pipe is covered with a mesh. Refrigeration equipment. 2. 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 refrigerating apparatus comprising: an inflow pipe, an outflow pipe connected to a lower portion of a container, and a mesh or the like in the container on the inflow pipe side and the outflow pipe side, and a desiccant between the mesh and the like.