JPH06200890A - Compressor - Google Patents

Abstract

PURPOSE:To provide a highly reliable compressor which restrains lubricant from being deteriorated in quality with lubricant effectively cooled. CONSTITUTION:The compressor is so constituted that electrically driven elements, a compression element, lubricant 6, and an oil feed pump composed of a coil spring 16 moving lubricant 6 by its rotation, and of an oil feed pipe 17 are contained in a sealed container, and an oil cooling pipe 26 is provided while being so constituted that one end of the cooling pipe passes through the sealed container 1 so as to be opened in lubricant 6, and the other end passes through the sealed container 1 so as to be connected to the oil feed pipe 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor used in a refrigerating device such as a refrigerator and a refrigerator.

[0002]

2. Description of the Related Art A conventional compressor will be described below with reference to the drawings. 5 and 6 are shown in JP-A-62-1.
FIG. 7 shows a horizontal rotary compressor disclosed in Japanese Patent No. 3095, and FIG. 7 shows a refrigeration system to which the horizontal rotary compressor is applied.

Reference numeral 1 in the figure is a substantially cylindrical closed container which is long in the lateral direction, and accommodates an electric element 4 composed of a stator 2 and a rotor 3, and a compression element 5 driven by the electric element 4. Lubricating oil 6 is stored under the closed container 1. The compression element 5 has compression chambers 10 formed on both sides of a cylinder 7 by closely contacting a main side housing 8 and a sub side housing 9. The rotor 3
A crankshaft 11 having an eccentric portion 11a is coupled to the roller shaft 12. A roller 12 is fitted to the eccentric portion 11a, and the roller 12 is inscribed in the compression chamber 10. The roller 1
A vane 13 is pressed against a spring 2 by a spring 14, and the compression chamber 10 is partitioned into a high pressure side and a low pressure side by the pressure contact of the vane 13.

An oil supply pump 15 for supplying the lubricating oil 6
The oil supply pipe 17 and the coil spring 16 fixed to the crankshaft 11 are arranged inside the oil supply pipe 17. A discharge valve 18 is provided in the sub-side housing 9, and a discharge cover 19 is provided in the front part. The cup-shaped portion of the discharge cover 19 is connected to the discharge chamber 19a.
Is formed as. A curved oil supply pipe 17 is fixed to the central portion of the discharge chamber 19a to fix the discharge cover 1
9, and is lightly press-fitted and fixed to the convex portion 9a of the sub-side housing 9. The tip of the oil supply pipe 17 is inserted into the lubricating oil 6.

The suction pipe 20 penetrates through the closed container 1, is located above the lubricator 6, and has the auxiliary side housing 9
Is communicated with the compression chamber 10 of the cylinder 7 provided in the. Further, the discharge pipe 21 extends through the closed container 1.

As shown in FIG. 7, the refrigeration system includes a condenser 22, a capillary tube 23, an evaporator 24, the evaporator 24 and the suction pipe 2 which are connected to a discharge pipe 21 of the closed container 1.
It is composed of a connecting pipe 25 connecting 0.

In the above structure, the rotation of the rotor 3 is transmitted to the crankshaft 11, and the coil spring 16 of the oil supply pump 15 fixed to the crankshaft 11 is rotated.
Is rotated by being regulated by the oil supply pipe 17 integrally fixed to the discharge cover 19 in the sub-side housing 9 while keeping the curved shape, and the lubricating oil 6 is sequentially transferred to the crankshaft 11 by the lead of the coil spring 16. Be refueled.

The refrigerant sucked from the suction pipe 20 and compressed in the compression chamber 10 is silenced by being discharged into the discharge chamber 19a from the discharge valve 18 provided in the sub-side housing 9, and sealed by the discharge cover 19. The refrigerant is discharged into the container 1, and the refrigerant is sucked into the suction pipe 20 again by the discharge pipe 21, the condenser 22, the capillary tube 23, the evaporator 24, and the connecting pipe 25.

[0009]

However, in the above-mentioned structure, when the compressor is operated, the heat generated when the refrigerant is compressed and the heat generated when the electric element 4 is rotated are closed containers. In order to accelerate deterioration and deterioration of the lubricating oil 6 due to being discharged and accumulated in the closed container 1 and increasing the temperature inside the closed container 1, there are problems such as deterioration of lubricity and pipe clogging due to decomposed and insoluble substances.

In view of the above problems, it is an object of the present invention to provide a highly reliable compressor that cools lubricating oil and does not promote deterioration and deterioration of lubricating oil.

[0011]

To achieve the above object, the present invention provides a lubricating oil sealed in a closed container, an electric element and a compression element, and a coil spring fixed to one end of a rotary shaft of the compression element. A compressor provided with an oil supply pump including an oil supply pipe that houses the coil spring,
One end penetrates the closed container and opens into the lubricating oil,
The other end is configured to include a cold oil pipe that penetrates the closed container and is connected to one end of the oil supply pipe.

Further, there is provided a lubricating oil sealed in a closed container, an electric element and a compression element, an oil supply pump including a coil spring fixed to one end of a rotary shaft of the compression element and an oil supply pipe accommodating the coil spring. A compressor provided, wherein one end penetrates the hermetic container to open in the lubricating oil, the other end penetrates the hermetic container to open in the lubricating oil, and the tip of the coil spring is The structure is provided with a cold oil pipe to be stored.

[0013]

In the above structure, the rotating action of the rotary shaft of the compression element causes the coil spring in the connected oil supply pump to rotate, so that the lubricating oil is sucked from one end of the cold oil pipe opened in the lubricating oil and the inside of the cold oil pipe flows. Forced circulation. At this time,
The lubricating oil is cooled by heat exchange with the atmosphere outside the closed container of the cold oil pipe.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. (Embodiment 1) This will be described with reference to FIGS. Reference numeral 15 denotes an oil supply pump, in which an oil supply pipe 17 accommodates a coil spring 16 connected to the crankshaft 11 of the compression element 5.
The cold oil pipe 26 penetrates the closed container 1 at one end to open into the lubricating oil 6, and the other end penetrates the closed container 1 to penetrate the oil supply pipe 17.
Is connected to one end of.

In the above structure, the rotation of the rotor 3 is transmitted to the crankshaft 11, and the coil spring 16 fixed to the crankshaft 11 is fixed to the auxiliary side housing 9 integrally with the discharge cover 19 to refuel. Tube 17
The coil 6 is rotated while maintaining a curved shape, and the lubricating oil 6 is sequentially supplied to the crankshaft 11 by the leads of the coil spring 16.

At this time, the lubricating oil 6 takes a path from the inside of the closed container 1 through the inside of the cold oil pipe 26 to the oil supply pipe 17, so that heat exchange with the atmosphere having a relatively low temperature is performed while passing through the cold oil pipe 26. , And cooled. The cooled lubricating oil 6 is
Oil is directly fed to the compression element 5.

Since the lubricating oil 6 is cooled in this way, deterioration deterioration is suppressed, and since the oil supply pipe 17 and the cold oil pipe 26 are connected, the lubricating oil 6 having a considerably low temperature is directly supplied to the compression element 5. Therefore, the temperature rise of the supplied lubricating oil 6 can be greatly suppressed, the deterioration of the lubricity and the generation of decomposed insoluble matter can be suppressed, and the life of the compressor can be extended. (Embodiment 2) This will be described with reference to FIGS. The oil supply pipe 17 of the oil supply pump 15 houses the coil spring 16, and one end of the oil supply pump 17 is opened into the lubricating oil 6 in the closed container 1.
The cold oil pipe 26 has one end penetrating the hermetic container 1 and opening into the lubricating oil 6, the other end penetrating the hermetic container 1 and opening into the lubricating oil 6, and houses the tip of the coil spring 16. .

In the above structure, the rotation of the rotor 3 is transmitted to the crankshaft 11, and the coil spring 16 of the oil supply pump 15 fixed to the crankshaft 11 is fixed.
However, the lubricating oil 6 existing in the vicinity of the open end of the oil supply pipe 17 is regulated by the oil supply pipe 17 integrally fixed to the discharge cover 19 in the sub-side housing 9 to rotate, and the lubricating oil 6 existing near the open end of the oil supply pipe 17 is the coil spring 16 Oil is sequentially supplied to the crankshaft 11 by the lead.

On the other hand, since the tip of the coil spring 16 is housed in the cold oil pipe 26, the lubricating oil 6 is supplied from the inside of the closed container 1 to the cold oil pipe 26 by the lead of the coil spring 16.
Since it passes through the inside, it is cooled by performing heat exchange with an atmosphere having a relatively low temperature while passing through the cold oil pipe 26. The cooled lubricating oil 6 is returned to the closed container 1 again from the other end of the opening of the cold oil pipe 26.

Here, the lubricating oil 6 supplied to the compression element 5
Is collected from the open end of the oil supply pipe 17, and the flow path resistance when passing through the cold oil pipe 26 is not added.
A large amount of lubricating oil 6 can be supplied as compared with the case where 7 and the cold oil pipe 26 are connected.

In this way, the lubricating oil 6 is cooled to suppress deterioration and deterioration, and since one end of the oil supply pipe 17 is opened in the lubricating oil 6, the amount of the lubricating oil 6 supplied is made relatively large. Therefore, the lubricity of the mechanical portion of the compression element 5 can be improved and the amount of wear can be reduced, so that the life of the compressor can be extended.

In order to perform the heat exchange between the lubricating oil 6 and the atmosphere more effectively, the cold oil pipe 26 is forcibly cooled by a fan or the like, or the cold oil pipe 26 is a fin tube type heat exchanger having a high heat exchange rate. It may be configured such that

[0023]

As is apparent from the above description of the embodiments, the compressor of the present invention has a structure in which an oil supply pipe and a cooling pipe are connected, and the lubricating oil exchanges heat with the atmosphere when passing through the cold oil pipe. Therefore, the lubricating oil is cooled, the deterioration of the lubricating oil is suppressed, the deterioration of the lubricity is suppressed, the generation of decomposed insoluble matter can be suppressed, and therefore the life of the compressor can be extended.

Further, one end of the oil supply pipe is opened in the lubricating oil so that a relatively large amount of the lubricating oil can be supplied, the lubricity of the mechanical portion of the compression element is improved, and the amount of wear is increased. Can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a compressor according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of an oil supply pump of the compressor.

FIG. 3 is a sectional view of a compressor according to another embodiment of the present invention.

FIG. 4 is a sectional view of an essential part of an oil supply pump of the compressor.

FIG. 5 is a sectional view of a conventional compressor.

FIG. 6 is a sectional view of a main part of the oil supply pump of FIG.

FIG. 7 is a refrigeration system diagram to which a conventional compressor is applied.

[Explanation of symbols]

 1 Airtight Container 4 Electric Element 5 Compression Element 6 Lubricating Oil 11 Crank Shaft 15 Oil Pump 16 Coil Spring 17 Oil Pipe 26 Cold Oil Pipe

Claims (2)

[Claims] 1. An oil supply pump comprising: a lubricating oil in an airtight container; an electric element and a compression element; a coil spring fixed to one end of a rotary shaft of the compression element; and an oil supply pipe accommodating the coil spring. A compressor provided with a cold oil pipe penetrating the closed container and opening into the lubricating oil, and the other end penetrating the closed container and connected to one end of the oil supply pipe. 2. An oil supply pump comprising: a lubricating oil in a hermetic container; an electric element and a compression element; a coil spring fixed to one end of a rotary shaft of the compression element; and an oil supply pipe accommodating the coil spring. A compressor provided with a cold oil pipe that penetrates through the closed container and opens into the lubricating oil, and has the other end that penetrates through the closed container and opens into the lubricating oil and that houses the tip of the coil spring. .