JPH1037872A - Horizontal compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high performance compressor which can reduce an oil delivering amount without causing a deficiency of oil supply even though the compressor is inclined and produces foaming in the case that the inside of a sealed container is a low pressure gas introducing type compressor. SOLUTION: This horizontal compressor is formed in such a way that a compression element 20 and an motor driven element 10 are stored in a sealed container 1, and oil is supplied to the compression element 20 mounted at the other end 13a of a rotary shaft 13 through an oil pump 42 mounted at one end 13b of the rotary shaft 13. In this case, an oil pooling chamber 1A and a sealed chamber 1B are partitioned and formed by a partitioning member 7 in the sealed container 1, and oil is sucked from both oil pooling chamber 1A and sealed chamber 1B to an oil pump 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal compressor having an oil pump used for a refrigerator or an air conditioner for supplying oil to a compression element.

[0002]

2. Description of the Related Art Conventionally, in this type of horizontal scroll compressor, oil is supplied to a scroll compression element mounted on the other end of the rotary shaft via an oil pump mounted on one end of the rotary shaft. Have been. In particular,
The oil pump includes a housing having one cylinder, a suction hole, and a discharge hole, a cover for closing an opening of the cylinder of the housing, and is housed in a cylinder of the housing and fitted to an eccentric portion of a rotary shaft. And one rotor that rotates eccentrically in the cylinder.

[0003] The oil stored in the sealed container is pumped up by the oil pump, and the sliding portions of the bearings and the scroll compressing elements are lubricated through the oil supply holes of the rotating shaft.

Here, when the inside of the closed vessel is a compressor of a low pressure gas introduction type, the oil reservoir and the suction port of the oil pump are provided at the lower part of the closed vessel.

In the case where a high-pressure gas introduction type compressor is used in the closed container, oil accumulates in a low pressure portion of the container. Therefore, the suction port of the oil pump is provided in a low-pressure closed chamber of the closed container. I have.

[0006]

However, in the above-described conventional horizontal scroll compressor, when the inside of the closed vessel is a low-pressure gas introduction type compressor, the oil diffuses to one side in the closed vessel, so that the compression is not performed. If the machine tilts or forms, there is a problem that oil shortage is likely to occur, and the oil discharge amount increases.

On the other hand, when the inside of the closed vessel is a high-pressure gas introduction type compressor, the low pressure portion is located near the discharge pipe serving as the discharge gas outlet of the compressor, so that the oil is discharged together with the discharge gas. There is a problem that the oil discharge amount increases easily.

According to the present invention, when the inside of a closed container is a compressor of a low-pressure gas introduction type, even if the compressor tilts or forms, the oil discharge amount can be reduced without causing a shortage of oil supply even if the compressor is formed. An object is to provide a compressor.

Another object of the present invention is to provide a compressor capable of effectively reducing the amount of oil discharged even when a high-pressure gas introduction type compressor is used in the closed vessel.

[0010]

According to a first aspect of the present invention, a compression element and an electric element are housed in a closed container, and the oil reservoir chamber and the closed chamber are separated by a partition member in the closed container. Two oil pumps are mounted at one end of the rotating shaft, and oil is sucked from the oil reservoir to the one oil pump and supplied to the compression element mounted at the other end of the rotating shaft. In addition, the oil is sucked from the closed chamber to the other oil pump and supplied to the oil reservoir.

According to a second aspect of the present invention, the compression element and the electric element are housed in the closed container, and the oil reservoir chamber and the closed chamber are defined by the partition member in the closed container, and one end of the rotating shaft is provided. , Two oil pumps are mounted, oil is sucked from the oil reservoir to the one of the oil pumps, oil is supplied to the compression element mounted at the other end of the rotary shaft, and Suction oil into other oil pumps,
In the internal low-pressure horizontal compressor for supplying oil to the oil reservoir,
The oil supply path that supplies oil from the closed chamber to the oil pump is
The compression element is configured to be opened below a gas suction port.

According to a third aspect of the present invention, the compression element and the electric element are housed in the closed container, and the oil reservoir chamber and the closed chamber are defined by the partition member in the closed container, and one end of the rotating shaft is provided. , Two oil pumps are mounted, oil is sucked from the oil reservoir to the one of the oil pumps, oil is supplied to the compression element mounted at the other end of the rotary shaft, and Suction oil into other oil pumps,
In the internal high-pressure horizontal compressor for supplying oil to the oil reservoir,
The oil supply path that supplies oil from the closed chamber to the oil pump is
The compression element is configured to be opened below a gas discharge port.

According to a fourth aspect of the present invention, the compression element and the electric element are housed in the closed container, and the oil reservoir chamber and the closed chamber are defined by the partition member in the closed container, and one end of the rotating shaft is provided. , Two oil pumps are mounted, oil is sucked from the oil reservoir to the one of the oil pumps, oil is supplied to the compression element mounted at the other end of the rotary shaft, and Suction oil into other oil pumps,
In a horizontal compressor that supplies oil to the oil reservoir, the oil supply capacity of an oil pump that supplies oil from the closed chamber to the oil reservoir is:
The oil supply capacity to supply oil from the oil reservoir to the compression element is equal to or more than the oil supply capacity.

According to a fifth aspect of the present invention, the compression element and the electric element are housed in the closed container, and the oil reservoir chamber and the closed chamber are defined by the partition member in the closed container, and one end of the rotating shaft is provided. , Two oil pumps are mounted, oil is sucked from the oil reservoir to the one of the oil pumps, oil is supplied to the compression element mounted at the other end of the rotary shaft, and Suction oil into other oil pumps,
In the horizontal compressor for supplying oil to the oil reservoir, the oil supply path for sucking oil from the closed chamber to the oil pump is configured by an oil supply pipe led out of the closed chamber from the lower part of the closed chamber to the oil pump. is there.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows the overall configuration of a horizontal scroll compressor according to the present invention.

The closed container 1 is formed by a cylindrical case 2 and upper and lower end caps 3 and 4 which are covered on both left and right ends of the case 2. A main frame 6 serving as a main bearing member and a shaft support member 7 serving as a sub-bearing member are shrink-fitted or press-fitted on both left and right end portions of the cylindrical case 2.
It is fixed in a sealed state. A first sealed chamber 1A is formed between the shaft support member 7 and the end cap 4, and a second sealed chamber 1B is formed between the shaft support member 7 and the end cap 3. . Then, the second closed chamber 1
In B, an electric element 10 is accommodated between the main frame 6 and the shaft support member 7, and a scroll compression element 20 driven by the electric element 10 is accommodated between the main frame 6 and the end cap 3. I have.

The electric element 10 comprises a stator 11, a rotor 12 rotatably inserted into the stator 11, and a rotating shaft 13 forming a central axis of the rotor 12. , The left and right ends 13a, 13b of the rotating shaft 13
The side is rotatably supported by the main frame 6 and the shaft support member 7 via a bearing member.

The scroll compression element 20 includes a fixed scroll 21 and a swinging scroll 3 which are opposed to each other.
The involute teeth 23 formed on the end plate 22 of the fixed scroll 21 are
By engaging the involute teeth 33 formed on the one end plate 32 with each other, a compression chamber P is formed in which a plurality of compression spaces are gradually reduced from the outside to the inside.

The oscillating scroll 31 is supported by the main frame 6 so as to be eccentrically rotatable in conjunction with the eccentric end 13a of the rotating shaft 13, and the Oldham coupling 20A
As a result, the orbiting scroll 31 is revolved so as not to rotate with respect to the fixed scroll 21 and is eccentrically moved, so that a low-pressure refrigerant directly introduced from the suction port 8A facing the outside into the second closed chamber 1B. The gas is compressed in the compression chamber P via an introduction path to be described later, and the compressed high-pressure refrigerant gas is discharged from a discharge port 24 provided at the center of the fixed scroll 21.

A discharge chamber 1C is provided on the discharge side of the discharge port 24 of the fixed scroll 21 in the scroll compression element 20, and is separated from the second closed chamber 1B. The high-pressure refrigerant gas discharged from the port 24 is discharged from the discharge pipe 40.

The inner bottom space of the first closed chamber 1A formed by the case 2 and the end cap 4 is used as an oil reservoir 41 for lubricating oil.

The lubricating oil stored in the oil sump 41 is supplied to the eccentric portion 1 at the other end of the rotary shaft 13 of the electric element 10.
43a is sucked from the suction pipe 43 of one oil pump 42b provided at the shaft support portion of the shaft support member 7 that supports the shaft 3b.
And lubricated to the sliding portions of each bearing.

The oil accumulated in the closed chamber 1B is supplied to the suction chamber 21a provided at the bottom of the case 2 forming the closed chamber 1B and in the fixed scroll 21 of the scroll compression element 20 by the other oil pump 42b. The oil is sucked from the opening 44c of the pipe 13 located at the lower part of the pipe, passes through 44D provided on the shaft support member 7, and is discharged to the oil reservoir 41 from the discharge port 43b of the oil pump 42b.

The shaft support member 7, which also serves as a partition between the oil reservoir 41 and the closed chamber 1B, is provided with an opening 44A so as to prevent a pressure difference between the oil reservoir 41 and the closed chamber 1B. The low-pressure refrigerant gas directly introduced into the second closed chamber 1B from the suction port 8A passes through a suction port 21a provided in the fixed scroll 21 of the scroll compression element 20, and the compression chamber P
And the low-pressure refrigerant gas introduced through such an introduction path is compressed in the compression chamber P, and the compressed high-pressure refrigerant gas is discharged from a discharge port 24 provided in the fixed scroll 21. The liquid is discharged into the discharge chamber 1C, and further discharged from the closed container 1 through a discharge port 40 provided in the discharge chamber 1C.

That is, the above-described low-pressure refrigerant gas flows from the suction port 8A to the suction port 21 provided in the fixed scroll 21.
a, the oil contained in the refrigerant is separated and falls to the bottom of the case 2, and the oil is sucked from the opening 44 c of the pipe 13 by the oil pump 42 b, and is collected from the discharge port 43 b of the oil pump 42 b. The oil is fed into the oil reservoir 41, and the oil is stored in the oil sump 41 and supplied from the oil supply pipe 43 to each bearing sliding portion through the discharge port 43a of the oil pump 42a by the oil pump 42a and the oil supply hole 46.

Here, the oil level of the lubricating oil accumulated at the bottom in the second sealed chamber 1B is lower than the oil level of the lubricating oil accumulated in the oil sump 41 at the inner bottom of the first sealed chamber 1A. Thereby, the electric element 10 housed in the second closed chamber 1B
By preventing the agitation of the lubricating oil by the rotor 12, the oil supply by the oil pump 42 is smoothed, and the input loss caused by the agitation of the lubricating oil by the rotor 12 of the electric element 10 as before, or This prevents the compression efficiency from deteriorating due to an increase in oil discharge.

Here, the first closed chamber 1A and the second closed chamber 1B, which are oil storage chambers, are formed in the closed container 1 by the partition member 7 in the closed container 1. 1
Oil is being supplied to A.

Therefore, when the inside of the closed vessel 1 is a compressor of a low-pressure gas introduction type, sufficient oil supply from 1A to each moving part can be achieved without causing oil shortage even if the compressor tilts or forms. And a high-performance compressor capable of reducing the oil discharge amount.

Also, as described in claim 2, the closed chamber 1B
The communication pipe 44B, which is an oil supply path for supplying oil from the oil pump 42 to the oil pump 42,
The opening 44C is provided at the lower side, so that the oil can be sucked from the low-pressure portion where the oil easily accumulates, and the oil in 1B can be effectively used without remaining.

Further, as described in claim 4, the closed chamber 1B
The oil supply capacity for supplying oil to the oil pump 42 from
Since the oil supply capacity for supplying oil from the oil reservoir 1A to the oil pump 42 is equal to or higher than the oil supply capacity, the oil in the closed container can be effectively used without leaving any oil.

Further, since the oil reservoir 1A is defined by the shaft support member 7, which is an existing component, the number of components can be reduced.

Further, since a part of the passage connecting the closed chamber 1B and the oil pump 42 is formed in the shaft support member 7, the work of connecting the piping is eliminated, and the number of parts can be reduced.

FIG. 2 shows another embodiment.
, The compression element 20 and the electric element 10 are housed in a sealed container 1 filled with high-pressure gas, and the rotary shaft 13 is connected to the rotary shaft 13 via a two-circuit oil pump 42 mounted on one end of the rotary shaft 13. Compression element 2 attached to the other end 13a of the
In the horizontal compressor configured to supply oil to the oil reservoir 0, a sealed chamber 1B with the oil reservoir 1A is defined by the partition member 7 and the main frame 6 in the closed vessel 1, and an oil pump 42a starts from 1A. An oil supply pipe 44B for supplying oil to each moving part and supplying oil from 1B to 1A by the other oil pump 426 is provided with a gas discharge port 40.
Is arranged below the opening 44C.

In this case, that is, in the case where the inside of the closed vessel 1 is a high-pressure gas introduction type compressor, the lower part of the gas discharge port 40 of the compressor, that is, the lower part of the compressor, that is, the most oil in the discharge chamber 1B. Since the opening 44C of the oil supply pipe 44B is arranged in a place where the oil is accumulated, the oil discharge amount can be reduced without discharging the oil together with the discharge gas, and the oil in 1B can be effectively used without remaining.

FIG. 3 shows another embodiment, in which the compression element 20 and the electric element 10 are housed in the closed container 1 and mounted on one end 13b of the rotating shaft 13 as described in claim 5. The other end 13 of the rotary shaft 13 via an oil pump 42
In the horizontal compressor configured to supply oil to the compression element 20 mounted on the main body 6 and the shaft support member 7 serving as a partition member, the oil reservoir chamber 1A and the closed chamber 1B are provided in the closed container 1. And an oil supply passage for supplying oil to each moving part from 1A by an oil pump 42a and supplying oil from 1B to 1A by the other oil pump 426 from the lower part of the closed chamber 1B to a closed container. 1
The oil pump 42b is led out and passes through the oil reservoir 1A.
This is constituted by an oil supply pipe 44B leading to the upper end. 44C is an opening of the oil supply pipe 44B.

In this case, since the oil supply pipe 44B is disposed outside the closed vessel 1, even if there are various obstacles such as the stator 11 between the closed chamber 1B and the oil pump 42, there is no problem. Instead, the inside of the sealed container 1 can be simplified, and the piping work can be simplified.

[0037]

As is apparent from the above description, according to the present invention, in the case of the compressor of the low pressure gas introduction type in the closed container, even if the compressor tilts or forms, the refueling is performed. It is possible to provide a high-performance compressor capable of reducing the oil discharge amount without causing shortage.

Further, even when the inside of the closed vessel is a high-pressure gas introduction type compressor, since the opening of the oil supply pipe is arranged below the gas discharge port of the compressor, which is a low pressure part, the discharge gas and The oil discharge amount can be reduced without discharging the oil together.

Further, by disposing the oil supply pipe outside the closed container, even if there are various obstacles such as the stator between the closed chamber and the oil pump, no problem occurs and the inside of the closed container is simplified. And the piping work can be facilitated.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an overall configuration of a horizontal scroll compressor according to the present invention.

FIG. 2 is a vertical sectional side view showing an overall configuration of a horizontal scroll compressor according to another embodiment.

FIG. 3 is a vertical sectional side view showing an overall configuration of a horizontal scroll compressor according to still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closed container 6 Main frame 7 Axle support member 10 Electric element 13 Rotating shaft 13b Eccentric part 20 Scroll compression element 21 Fixed scroll 23 Involute tooth 31 Swing scroll 33 Involute tooth P Compression chamber 42 Oil pump 44B Oil supply pipe 1A Oil reservoir 1B Closed chamber 1C Discharge chamber

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuyoshi Tsuchiya 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] An oil reservoir and a closed chamber are defined by a partition member in a closed container, and two oil pumps are mounted on one end of a rotating shaft. Sucking oil from the oil reservoir into the one oil pump, supplying oil to the compression element mounted on the other end of the rotating shaft, and supplying oil from the sealed chamber to the other oil pump. A horizontal compressor for sucking and supplying oil to the oil reservoir. 2. An oil reservoir and an airtight chamber are defined in a sealed container by housing a compression element and an electric element. A partition member defines an oil reservoir chamber and an airtight chamber. Sucking oil from the oil reservoir into the one oil pump, supplying oil to the compression element mounted on the other end of the rotating shaft, and supplying oil from the sealed chamber to the other oil pump. In the internal low-pressure horizontal compressor that sucks and supplies oil to the oil reservoir, an oil supply path that supplies oil from a closed chamber to an oil pump is opened below a gas inlet of the compression element. Horizontal compressor. 3. A compression element and an electric element are housed in an airtight container, an oil reservoir chamber and an airtight chamber are defined by a partition member in the airtight container, and two oil pumps are mounted at one end of a rotary shaft. Sucking oil from the oil reservoir into the one oil pump, supplying oil to the compression element mounted on the other end of the rotating shaft, and supplying oil from the sealed chamber to the other oil pump. In the internal high-pressure type horizontal compressor that sucks and supplies oil to the oil reservoir, an oil supply path that supplies oil from a closed chamber to an oil pump is opened below a gas discharge port of the compression element. Horizontal compressor. 4. A compression container and a motorized element are housed in a closed container, and an oil reservoir and a closed chamber are defined by a partition member in the closed container, and two oil pumps are mounted on one end of a rotating shaft. Sucking oil from the oil reservoir into the one oil pump, supplying oil to the compression element mounted on the other end of the rotating shaft, and supplying oil from the sealed chamber to the other oil pump. In a horizontal compressor that sucks and supplies oil to the oil reservoir, the oil supply capacity of an oil pump that supplies oil from the closed chamber to the oil reservoir is equal to or more than the oil supply capacity that supplies oil from the oil reservoir to the compression element. A horizontal compressor. 5. A compression container and a motorized element are housed in a closed container, and an oil reservoir and a closed chamber are defined by a partition member in the closed container, and two oil pumps are mounted at one end of a rotating shaft. Sucking oil from the oil reservoir into the one oil pump, supplying oil to the compression element mounted on the other end of the rotating shaft, and supplying oil from the sealed chamber to the other oil pump. In a horizontal compressor that sucks and supplies oil to the oil reservoir, an oil supply path that sucks oil from the closed chamber to the oil pump is configured by an oil supply pipe that is led out of the closed chamber from the lower part of the closed chamber to the oil pump. A horizontal compressor characterized by being made.