JPH01271688A - Horizontal rotary compressor - Google Patents

Abstract

PURPOSE:To reduce the size of an enclosing case by incorporating an oil-supply pump member formed integrally with a spring material into an oil-supply tube portion fixed to a side housing and engaging the oil-supply pump member with a coupling pin eccentrically fixed to the end of a crankshaft. CONSTITUTION:An oil-supply tube portion 46, which is fixed to a side housing 42, is made of plastics integrally with a mounting portion 47 and an oil-supply guide portion 49. An oil-supply pump member 51 is formed integrally with an engaging portion 55 and a throttle-forming portion 57. The engaging portion 55 is formed by bending into the shape of a ring one end of a coupling portion 54 rotatably engaged with a coupling pin 53 fixed in an engaging hole 52 eccentrically made in the end of a crankshaft 36. The throttle-forming portion 57 is formed at the other end of the coupling portion 54, and is provided with a throttle 56 for an oil passage hole in its bottom portion. The throttle-forming portion 57 is formed integrally by means of a spring having elasticity such as piano wire.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Publicly funded The present invention is directed to a horizontal 11
@Relates to rotary compressors.

2. Description of the Related Art Conventionally, for oiling a horizontal rotary compressor mounted so that the crankshaft is positioned horizontally, for example, Japanese Patent Publication No. 61-47
As shown in Japanese Patent No. 994, an oil supply system was used in which a coil spring integrated with the crankshaft was placed in a curved oil supply pipe.

Hereinafter, an example of the conventional horizontal rotary compressor mentioned above will be described with reference to the drawings.

FIG. 3 shows a conventional horizontal rotary compressor.

In FIG. 3, 1 is a closed case, 2 is a stator of an electric element, and 3 is a quadrupler. Reference numeral 4 denotes a crankshaft to which the stomach 3 is press-fitted and fixed.

Reference numeral 5 denotes a p-ra, which is rotatably arranged on the circumference of the eccentric portion 6 of the crankshaft 4. 7 is a cylinder, and 8 is a side housing on the side of the rotor 3, which is fixed to the sealed case 1 by welding. Reference numeral 9 denotes a side housing on the opposite side of the quadrature, and integrally includes a bearing 10. Reference numeral 11 denotes a curved oil supply pipe, and inside thereof, a coil spring 12 having an outer diameter close to the inner diameter of the oil supply pipe 11 is integrated with the crankshaft 4. Reference numeral 13 denotes lubricating oil, which is sealed in the sealed case 1.

Regarding the horizontal rotary compressor configured as above, the oil supply operation thereof will be explained in particular.

When the horizontal 1!11 rotary compressor is in operation, the rotor 3 rotates and the crankshaft 4 press-fitted into the rotor 3 also rotates. When the crankshaft 4 rotates, the coil spring 12 fixed to the crankshaft 4 moves the oil supply pipe 1 fixed to the bearing 10.
1 and rotates while maintaining the curved shape, lubricating oil 1
3 are sequentially advanced upward through the oil supply pipe 11 by the lead of the coil spring 12, and are supplied to the crankshaft 4. As the crankshaft 4 rotates, the parts that require oil are supplied with oil and are slid.

Problems to be Solved by the Invention However, with the above configuration, space is required to longitudinally arrange the curved oil supply pipe 11 that communicates with the crankshaft 4 and is fixed to the bearing 10. Since the length of the sealed case 1 is increased, the space inside the sealed case 1 has to be increased in volume. This large space volume requires a large amount of refrigerant to be sealed when piping is connected to a refrigeration system, which results in a large sealed case 1, and the coil spring 12 is tightly wound and has a long material length. It had problems such as high cost. Furthermore, since the coil spring 12 rotates in a forcibly bent state within the curved oil supply pipe 11, there is large friction between the inner surface of the oil supply pipe 11 and the outer diameter of the coil spring 12, which causes noise and load. In addition, under severe conditions such as high speeds, the oil supply parts such as the oil supply pipe 11 and coil spring 12 wear out. Furthermore, in order to improve the refueling ability, the coil diameter of the coil spring 12 may be increased, or
Alternatively, by increasing the diameter of the material wire, the oil transfer volume formed between the lead of the coil spring 12 and the inner surface of the oil supply pipe 11 can be increased, but by increasing the diameter of the coil and wire, friction becomes extreme. There was also the problem that the refueling capacity could not be improved as much as expected because of the increase in fuel consumption.

The present invention is based on the W! In consideration of the 4 luck points, we aim to reduce noise and load by reducing materials and reducing *** by downsizing the sealed case and coil spring, and furthermore, even under severe conditions such as high speeds, oil supply pipes and coil springs etc. To provide a compressor equipped with a lubricating device that allows highly reliable operation with a lubricating device that does not wear parts, and also allows the lubricating capacity to be freely adjusted.

Means for Solving the Problems In order to solve the above problems, the horizontal rotary compressor of the present invention stores lubricating oil in a sealed case and has a bearing for pivotally supporting a crankshaft on a compression element, - an oil supply pipe part integrally formed of plastic fixed to the side housing and having an oil supply guide part whose end opens into the lubricating oil and a mounting part communicating with the bearing sliding part; A refueling pump member integrally formed from a spring material, which includes a built-in diaphragm forming part that forms a diaphragm, an engaging part bent into a ring shape, and a connecting part that connects the diaphragm forming part and the engaging part. and a connecting pin fixed to an engaging hole drilled at an eccentric position of the end of the crankshaft, and the oil supply device is configured such that the engaging portion is fitted into the connecting pin.

According to the present invention, with the above configuration, the oil supply pipe portion with a short curved shape in the longitudinal direction of the crankshaft is provided close to the bearing, so that the sealed case can be downsized and the rotation of the crankshaft can be reduced. When the engaging portion of the ring-shaped bent connecting portion of the fuel pump member rotatably engaged with the connecting pin fixed at an eccentric position at the end of the crankshaft within the fuel feeding pipe portion rotates, the other end reciprocates. The aperture forming portion provided at the other end of the connecting portion slides back and forth within the oil supply pipe portion with less regulation, that is, with less friction. Due to this slow reciprocating sliding movement, the lubricating oil that has flowed into the ridges in the lubricating oil of the aperture forming portion is sequentially transferred into the oil supply pipe portion due to its viscosity. Here, the amount of lubricating oil to be transferred is determined by adjusting the wheel center distance for engaging the engaging part of the oil supply pump member with the end of the crankshaft, or adjusting the oil passage cross-sectional area formed by the throttle of the throttle forming part. Since it can be freely adjusted by either or a combination of both, the sliding parts that require lubrication as the crankshaft rotates are supplied with oil and lubricated.

EXAMPLE Hereinafter, a horizontal rotary compressor according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a horizontal rotary compressor according to an embodiment of the present invention. FIG. 2 shows an enlarged cross-section of the main part taken along the line A-A in FIG. In Figures 1 and 2, 31
is a closed case with an electric element 32 and a rotary compression element 33.
It is integrated and stored. 34 is the above-mentioned electricity! iI! !
! The element 32 is a stator, and 35 is a rotor. 36 is a crankshaft to which the rotor 35 is press-fitted and fixed. A roller 37 is rotatably arranged on the circumference of the eccentric portion 38 of the crankshaft 36. 39 is a cylinder, 40 is a side housing on the side of the rotor 35 which integrally has a bearing 41, and is welded and fixed to the sealed case 31;
Reference numeral 2 designates a side housing on the side opposite to the quadrature 35, which integrally has a bearing 43. A vane 44 is in contact with the outer circumference of the roller 37 and partitions the compression chamber 45 formed within the cylinder 39 into a high pressure chamber (not shown) and a low pressure chamber (not shown).

Reference numeral 46 denotes an oil supply pipe part integrally molded from plastic and fixed to the side housing 42, and is constructed by integrating a mounting part 47 that fits into the bearing 43 and an oil supply guide part 49 having an opening 48 provided below. ing. The upper end of the oil supply guide part 49 is connected to the mounting part 47, and the lower end is connected to the opening 48, which is connected to the lubricating oil 50 stored below the sealed case 31.
is immersed. Reference numeral 51 denotes an oil supply pump member, and a connecting portion 54 is rotatably engaged with a connecting pin 53 fixed to an engaging hole 52 eccentrically provided at the end of the crankshaft 36.
An engaging part 55 having one end bent into a ring shape and an elastic spring material such as piano wire are integrated at the other end to form a diaphragm forming part 57 having a diaphragm 56 as an oil passage hole at the bottom. It extends into the oil supply pipe section 46 from the engagement hole 52, and is configured such that the aperture forming section 57 is immersed in the lubricating oil 50 within the oil supply guide section 49.

The diaphragm forming portion 57 is located within the opening 48 .
This forms a throttle 56 with a smaller cross-sectional area for the passage of oil.

Regarding the horizontal rotary compressor configured as above, the oil supply operation thereof will be explained in particular.

When operating a horizontal rotary compressor, electricity 11! When the stator 34 of the I element 32 is energized and the date 35 rotates, the crankshaft 36 rotates, and the compression element 33 compresses the refrigerant, and the rotation of the crankshaft 36 is supported by the engagement hole 52. By eccentrically rotating the connecting portion 54 using the connecting pin 53 shown in FIG. Due to the 111131 reciprocation of B, the lubricating oil 50 flowing from the orifice 56 of the orifice 9 forming part 57 rises into the oil supply guide part 49 due to viscosity, passes through the oil supply pipe part 46, and is supplied with oil as the crankshaft 36 rotates. The necessary sliding parts are supplied with oil and lubricated.

As described above, according to the above embodiment, the horizontal rotary compressor stores the lubricating oil 50 in the sealed case 31, and has the bearing 43 on the compression element 33 that pivotally supports the crankshaft 36, -
The oil supply guide part 49 has an opening 4B in the S lubricant 50.
and a mounting portion 47 that communicates with the sliding plow portion of the bearing 43, an oil supply pipe portion 46 that is integrally molded of plastic and is fixed to the side housing 42, and is built into the oil supply pipe portion 46 and forms a throttle 956. The oil supply pump member is integrally molded from a spring material and includes a diaphragm forming portion 57, an engaging portion 55 bent into a ring shape, and a connecting portion 54 connecting the diaphragm forming portion S7 and the engaging portion 55. 51 and a connecting pin 53 fixed to an engaging hole 52 bored at an eccentric position at the end of the crankshaft 36, and the engaging portion 55 is fitted into the connecting pin 53. Equipped with a configuration. As a result, the space volume of the sealed case 31 can be reduced and the size can be reduced, the material for the coil spring can also be reduced, noise and load can be reduced by reducing friction, the lubrication capacity can be freely adjusted, and the A lubrication device that does not wear out during operation can be created.

In the embodiment, an application example of a horizontal rotary compressor is shown, but the present invention is not limited to this, and can also be applied to a reciprocating type or a screw type compressor. Furthermore, it can be applied to a vertical compressor or a compressor that can be used both vertically and horizontally, expanding the scope of use.

Effects of the Invention As described above, the present invention stores lubricating oil in a sealed case, has a bearing for pivotally supporting a crankshaft in a compression element, and has an oil supply guide portion with one end opening into the lubricating oil; an oil supply pipe part integrally molded of plastic fixed to the fin side housing and having a mounting part that communicates with the bearing sliding part; an aperture forming part that is built in the oil supply pipe part and forms a throttle; A refueling pump member integrally formed from a spring material including a bent engaging portion and a connecting portion connecting the aperture forming portion and the engaging portion; By providing the structure of the oil supply device including a connecting pin fixed to an engagement hole and the engaging portion being fitted into the connecting pin, the space volume of the sealed case can be reduced and the oil supply pump can be made small and compact. When comparing the spring material of the member with the same oil supply capacity as the conventional one, the material length can be reduced by 10% and the material cost can be reduced. In addition, noise and load are reduced by reducing friction, and parts such as the oil supply pipe of the oil supply system do not wear out even when operated under severe conditions, allowing highly reliable compressor operation. Due to integral molding, the number of parts is small and it can be manufactured at low cost, and it can be easily installed to the side housing by fitting it.Furthermore, due to the insulation effect of the plastic, there is little heat conduction from the 1m pressure element, and the viscosity of the oil is stable, making it possible to lubricate. can. The attachment of the fuel pump member is facilitated by the structure of the ring-shaped engaging portion of the connecting portion and the connecting pin. Regarding oil supply capacity, it is possible to adjust the eccentric distance of the engagement hole that disguises the engagement part of the oil supply pump member as the end of the crankshaft, or to adjust the oil passage cross-sectional area formed by the throttle, or a combination of both. It can be easily adjusted by just changing it. Furthermore, it can be applied not only to horizontal rotary compressors but also to reciprocating type, screw type, vertical type and ma-horizontal type compressors, and has a wide range of applications.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a horizontal rotary compressor according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of main parts taken along the line A-A in Fig. 1, and Fig. 3 is a conventional horizontal rotary compressor. FIG. 31... Sealed case, 33... Compression element, 34°... Stator, 35... Datator, 36... Crankshaft , 37...
Roller, 38... Eccentric part, 39... Cylinder, 40... Side housing, 41...
...Bearing, 42-...Side housing, 4
3...bearing, 44...vane, 45...
...Compression chamber, 46...Oil supply pipe section, 47.
...Mounting part, 48...Opening, 49...
...Oil supply guide section, 50...Lubricating oil, 51.
...Refueling pump member, 52...Engagement hole,
53...Connection pin, 54...Connection part,
55... Engaging portion, 56... Diaphragm 9, S7
・・・・・・Aperture forming part. Name of agent: Patent attorney Toshio Tsuchinakao (1 person) Fig. 1 31... Sealed case i. - Oil supply pipe section m... Compression! ! t 47...Mounting part...Stator 48 -Open 035...〇-Evening...Refueling guide part I...Crankshaft E...
Lubricating oil field... cylinder Field... consecutive PI (
ν2...Side housing Me...Connection part 11.4
3...Bearing 5...Setting section...Vane $...Crest 45...Compression chamber
Te...Crest formation part Figure 2

Claims (1)

[Claims] Lubricating oil stored in a sealed case, a stator press-fitted into the sealed case, a rotor driven by the stator, a crankshaft having an eccentric part press-fitted into the rotor, and rotation of the crankshaft. a cylinder that forms a compression chamber concentrically with the center; a side housing that airtightly closes both sides of the cylinder and has bearings that pivotally support the crankshaft; a compression element having a roller that rolls along the inner wall of the cylinder, a vane that comes into contact with the outer periphery of the roller and partitions the compression chamber into a high pressure chamber and a low pressure chamber, and an oil supply guide portion that opens into the lubricating oil at one end. an oil supply pipe part integrally molded of plastic and fixed to the side housing and having a mounting part communicating with the bearing sliding part; a forming part built into the oil supply pipe part and forming an orifice; A refueling pump member integrally formed from a spring material including a bent engaging portion and a connecting portion connecting the aperture forming portion and the engaging portion; and a connecting pin fixed to an engaging hole, the engaging portion being fitted into the connecting pin.