JPH0552191A - Horizontal type compressor - Google Patents

Abstract

PURPOSE:To prevent small iron powder accumulated in an oil reservoir such as a spatter emerging at the time of welding a casing from flowing to the side of an oil feeding pump and to improve reliability of each slide part. CONSTITUTION:An inlet port 60 positioned on the lower end of an oil inlet passage 66 is opposingly opened against an oil reservoir 90, and an annular skirt part 8 which is larger than the opening area of the inlet port 60 proximately opened to the bottom surface of the oil reservoir by extending to the neighborhood of the bottom surface of the oil reservoir 90 is integrally provided. A ring magnet 7 surrounding the inlet port 60 is arranged on the inward part of the skirt part 8 and iron powder and others are removed from oil to be sucked into the oil feeding pump 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal compressor used in a refrigeration system or the like and having an oil pump inside.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2-45686 and as shown in FIG. 3, an oil supply pump P interlocking with a drive shaft D for driving a compression element is provided in a frame H installed in a horizontal casing C. An oil suction pipe R is connected to the end of an oil suction passage R extending below the oil supply pump P, and a suction port L located at the lower end of the oil suction pipe R is provided in the bottom of the casing C in a concave shape. A strainer S is attached around the suction port L while opening to the sump O so that dust and the like accumulated in the oil sump O can be prevented from being sucked up with the oil to the oil supply pump P side.

[0003]

However, with the strainer S as described above, although relatively large dust can be removed, it is difficult to remove fine iron powder and the like, and in particular the horizontal casing K
It is difficult to remove minute spatters and the like generated when welding the body and the lid of the oil pump, and the fine iron powder and the like are sucked up to the oil supply pump P side, and the sliding portion of the oil supply pump P and the oil supply pump P. Damage the sliding parts of each lubrication part
There is a problem of unreliability.

In this case, it is conceivable to dispose a magnet on the wall surface of the casing C located at the bottom of the oil sump O, but even in this case, spatters scattered in a wide range inside the casing C can be completely captured. It is difficult to gather.

A main object of the present invention is to provide a horizontal compressor which can satisfactorily collect fine iron powder such as spatters and improve the reliability of the oil supply pump by devising the arrangement structure of the magnets. There is a point.

[0006]

In order to achieve the above-mentioned main object, the present invention firstly arranges a compression element 3 driven by a drive shaft 4 inside a horizontal casing 9 and at the same time, In a horizontal compressor in which a refueling pump 6 interlocked with the drive shaft 4 is supported by a frame 5 installed inside 9, a suction port 60 of the refueling pump 6 is formed to face an oil reservoir 90 provided at the bottom of the casing 9. With opening
An annular magnet 7 was arranged around the opening of the suction port 60 to surround the opening of the suction port 60.

Secondly, in order to further improve the ability of the magnet 7 to collect the iron powder, in the above first means, the opening area around the suction port 60 is larger than the opening area of the suction port 60, In addition, an annular skirt portion 8 that extends close to the bottom surface of the oil sump 90 and opens in the vicinity of the bottom surface is provided, and the magnet 7 is arranged inside the skirt portion 8.

Thirdly, by effectively utilizing the magnet 7, the magnet 7
In order to further improve the ability to collect iron powder in the above, the opening area of the central hole 70 in the magnet 7 in the first means is
In addition to increasing the opening area of the suction port 60, the axial length of the magnet 7 is set to a length that extends close to the bottom surface of the oil sump 90 and opens close to the bottom surface.

[0009]

By providing the annular magnet 7 around the opening of the suction port 60 in the first means, iron powder or the like can be adsorbed from the oil that is about to be pumped up from the oil sump 90 to the oil supply pump 6, Even the fine iron powder contained therein can be satisfactorily collected by the magnet 7, and the intrusion of iron powder and the like into the oil supply pump 6 side can be satisfactorily blocked.

By the second means, since the opening area of the inner portion of the skirt portion 8 is larger than that of the suction port 60,
The flow velocity of the oil in this portion, that is, the flow velocity of the oil contacting the magnet 7 can be reduced, whereby iron powder or the like can be favorably adsorbed to the magnet 7 from the oil having a low flow velocity, and the iron powder in the magnet 7 can be adsorbed. It is possible to improve the ability to collect such as.

By the third means, the flow velocity of oil passing through the central hole 70 of the magnet 7 can be reduced, and the ability of the magnet 7 to collect iron powder or the like can be improved. In this case,
It is not necessary to specially process the frame 5 or the like to reduce the oil flow velocity, and the magnet 7 can be effectively used.

[0012]

1 is a scroll type open type horizontal compressor, in which a fixed scroll 1 and a movable scroll 2 are provided inside a horizontal casing 9 having a body 91 and lids 92, 93. With a compression element 3 having a pulley 4
The drive shaft 4 connected to an external drive source via 0 is interlocked with the movable scroll 2 via a counterweight 41 provided at the end of the shaft and a swing link 42 fitted thereto, and the movable scroll 2 is The Oldham ring 21 revolves around the fixed scroll 1 in a state where its rotation is blocked, and the suction gas taken from the suction pipe 94 into the casing 9 is compressed in the compression chambers 30 defined between the scrolls. The later discharge gas is taken out from the discharge hole 11 to the discharge pipe 96 through the discharge chamber 95.

An oil supply pump 6 interlocked with the rotation of the drive shaft 4 is supported at the center of a frame 5 which is disposed inside the casing 9 and supports each part. Is mechanically similar to the known one shown in FIG. 3, and has a rotor 62 having an annular eccentric groove 61 that constitutes an oil chamber.
And a vane 64 for contacting the head with the eccentric groove 61 via a spring 63, and an oil suction passage 6 formed inside the frame 5 from an oil reservoir 90 provided at the bottom of the casing 9.
5, a fixed amount of oil is pumped up every one rotation, and this oil is guided to an oil supply passage 43 provided inside the drive shaft 9 via an oil discharge passage 66 and a communication passage 67, and an oil supply portion such as a main bearing 44 is provided. I am trying to supply it to.

The discharge chamber 95 is provided with an oil separator 97 for separating oil from discharge gas, and the oil separated by the separator 97 is stored in the oil reservoir 90 through a capillary tube 98. I'm trying to bring it back.

In the above structure, the suction port 60 located at the lower end of the oil suction passage 66 for sucking oil into the oil supply pump 6 is opened to face the oil sump 90, and
An annular magnet 7 is arranged around the opening of the suction port 60 to surround the opening of the suction port 60.

In addition, at a lower portion of the frame 5 located around the opening of the suction port 60, the frame is larger than the opening area of the suction port 60 and extends close to the bottom surface of the oil sump 90 to be close to the bottom surface. An annular skirt portion 8 that opens to the side is integrally provided. Then, the magnet 7 is arranged inside the skirt portion 8.

Thus, by disposing the magnet 7 around the suction port 60, iron powder or the like can be satisfactorily collected from the oil sucked into the oil supply pump 6, and the sliding parts of the oil supply pump 6 and each oil supply portion can be prevented. The reliability can be improved.

Further, since the skirt portion 8 is provided and the magnet 7 is arranged inside the skirt portion 8, the flow velocity of the oil in the inner portion of the skirt portion 8 can be reduced, and iron powder or the like mixed in the oil can be reduced. The magnet 7 can be favorably adsorbed, and the trapping ability of the magnet 7 can be improved. Moreover, the skirt portion 8 can lower the suction position of the oil from the oil sump 90, and can also increase the substantially effective amount of oil.

By the way, in the structure shown in FIG.
Although the skirt portion 8 is provided by processing the lower portion of the magnet 7, as shown in FIG. 2, the opening area of the central hole 70 in the magnet 7 is made larger than the opening area of the suction port 60, and the magnet 7 is The axial length of may be set to a length that extends close to the bottom surface of the oil sump 90 and opens in close proximity to the bottom surface. In this case, the magnet 7 can be effectively used, and with a simple configuration, Similar to the skirt portion 8, the flow velocity of the oil contacting the magnet 7 can be reduced and the ability to collect iron powder or the like can be improved.

[0020]

As described above, according to the first aspect of the present invention, iron powder or the like can be favorably adsorbed from the oil pumped from the oil reservoir 90 to the oil supply pump 6, and the iron powder or the like can enter the oil supply pump 6 side favorably. Therefore, it is possible to improve the reliability of the lubrication pump 6 and the sliding portion of each lubrication portion connected thereto.

According to the second aspect of the invention, the flow velocity of oil in the inner portion of the skirt portion 8 can be reduced and the magnet 7 can be reduced.
In addition to improving the ability to collect iron powder etc. in
The oil suction position can be lowered, and the effective oil amount can be increased.

According to the third aspect of the invention, the magnet 7 can be effectively used, and the ability to collect iron powder and the like by the magnet 7 can be improved with a simple structure.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a horizontal compressor according to the present invention.

FIG. 2 is a sectional view of a main part showing the second embodiment.

FIG. 3 is a sectional view of a main part of a conventional horizontal compressor.

[Explanation of symbols]

 3 Compressing Element 4 Drive Shaft 5 Frame 6 Oil Pump 7 Magnet 8 Skirt 9 Horizontal Casing 60 Suction Port 70 Center Hole 90 Oil Reservoir

Claims (3)

[Claims] 1. A horizontal type in which a compression element 3 driven by a drive shaft 4 is provided inside a horizontal type casing 9 and a refueling pump 6 interlocking with the drive shaft 4 is supported by a frame 5 installed inside the casing 9. In the compressor, an oil sump 9 provided with a suction port 60 of the oil supply pump 6 at the bottom of the casing 9
The horizontal compressor is characterized in that an annular magnet 7 is provided around the opening of the suction port 60 so as to be opposed to 0 and surrounds the opening of the suction port 60. 2. The suction port 6 is provided around the opening of the suction port 60.
An annular skirt portion 8 that is larger than the opening area of 0 and extends close to the bottom surface of the oil sump 90 and opens in the vicinity of the bottom surface is provided. The magnet 7 is arranged inside the skirt portion 8. The horizontal compressor according to claim 1. 3. The opening area of the central hole 70 in the magnet 7 is
The axial length of the magnet 7 is set to a length that extends close to the bottom surface of the oil sump 90 and opens in close proximity to the bottom surface while increasing the opening area of the suction port 60. Horizontal compressor.