JPH10184575A - Gas compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas compressor reducing the outflow quantity of lubricating oil to an air conditioning system so as to improve the cooling effect of the air conditioning system. SOLUTION: A gas compressor is provided with a compressor body 13 and an oil reservoir chamber 27 storing lubricating oil A fed to the sliding parts of the compressor body 13. The compressor body 13 consists of a cylinder 16 having the inner periphery of approximately elliptic cylinder shape in the inner periphery and provided between a front side block 14 and a rear side block 15, a rotor 18 horizontally mounted in a rotatable state in a cylinder chamber 39 formed by both side blocks 14, 15 and the cylinder 16, and a vane slidably mounted in a vane groove formed at the rotor 18. Refrigerant gas is sucked into the cylinder chamber 39 and compressed by the rotation of the rotor 8, and high pressure refrigerant gas after compression is discharged to a discharge chamber on the oil reservoir chamber 27. A plurality of ribs lid are formed at the internal wall of the discharge chamber 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas compressor used for an air conditioner system and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, in a gas compressor of this type, an opening end of a casing 1 is closed by a front head 2 and a compressor body 3 connected to an electromagnetic clutch 20 in the casing 1. Is configured to be stored.

The compressor body 3 includes a front side block 4
And a cylinder 6 having a substantially elliptical cylindrical shape on the inner periphery between the rear side block 5 and the cylinder chamber 49 formed by the side blocks 4, 5 and the cylinder 6. .

The rotor 8 is integrally provided with a rotor shaft 8a penetrating between end faces thereof, and the rotor shaft 8a is supported by an F bearing 4a of a front side block 4 and an R bearing 5a of a rear side block 5. .

A non-illustrated vane groove (not shown) is formed in the rotor 8 in a radial direction, and a vane (not shown) is mounted in the vane groove so as to be able to move forward and backward. It is urged toward the inner wall side of the cylinder 6 by the hydraulic pressure at the bottom of the vane groove.

[0006] Front and rear side blocks 4,
5, a small chamber of the cylinder chamber 49 partitioned by the cylinder 6, the rotor 8, and the vane is referred to as a compression chamber 41, 41,.
The rotation of the rotor 8 repeatedly changes the capacity.

In the compressor body 3, when the rotor 8 rotates and the capacity of the compression chambers 41, 41,... Changes, the low-pressure refrigerant gas in the suction chamber 42 is sucked and compressed by the change in capacity. At this time, the low-pressure refrigerant gas in the suction chamber 42 is
The air is introduced from the air conditioner system (not shown) outside the casing 1 through the suction port 1a.

The compressed high-pressure refrigerant gas is supplied to the compression chambers 41 and 4.
1 through the discharge port (not shown) of the cylinder 6, the discharge communication path of the rear side block 5, the oil separator 45, and the discharge chamber 46, and then from the discharge port 1b to the air conditioning system outside the casing 1. At this time, the oil separator 45 separates the lubricating oil A from the high-pressure refrigerant gas, and the separated lubricating oil A accumulates in the oil storage chamber 47 below the discharge chamber 46.

The discharge chamber 46 and the oil storage chamber 47 are separated from the partition plate 1.
The lubricating oil A in the oil storage chamber 47 is wound up by the discharge flow of the high-pressure refrigerant gas and is prevented from entering the discharge chamber 46. The lubricating oil A stored in the oil storage chamber 47 is supplied by pressure to sliding parts such as the F bearing 4a and the R bearing 5a via the oil passage 48.

[0010]

By the way, in the gas compressor as proposed above, the high-pressure refrigerant gas after compression and the lubricating oil A are not sufficiently separated in the oil separator 45, and a large amount of the lubricating oil A is produced. Spills into the air conditioning system. Therefore, there is a problem that the heat exchanged by the evaporator in the air conditioner system is absorbed by the lubricating oil A, and the cooling effect of the air conditioner system is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the amount of lubricating oil flowing out to an air conditioning system and improve the cooling effect of the air conditioning system. It is an object of the present invention to provide a gas compressor.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0013]

In order to achieve the above object,
The gas compressor according to the present invention is rotatably suspended in a cylinder chamber formed by a pair of side blocks and an inner peripheral substantially elliptical cylindrical cylinder provided between the pair of side blocks and the cylinder. A rotor, a compressor body comprising a vane slidably mounted in a vane groove formed in the rotor, and an oil storage chamber for storing lubricating oil supplied to a sliding portion of the compressor body, By the rotation of the rotor, the refrigerant gas is sucked and compressed into the cylinder chamber, and the compressed high-pressure refrigerant gas is discharged into the discharge chamber on the oil storage chamber.In the gas compressor, a plurality of ribs are formed on the inner wall of the discharge chamber. Characterized by being formed,
An inclined surface is formed on the rib.

Therefore, in the present invention, since the plurality of ribs are formed on the inner wall of the discharge chamber, the high-pressure refrigerant gas discharged into the discharge chamber collides with the plurality of ribs, and the flow velocity thereof is reduced. As a result, the residence time of the high-pressure refrigerant gas in the discharge chamber is lengthened, and the lubricating oil in the high-pressure refrigerant gas is reliably dropped and separated into the oil storage chamber. Also, by forming an inclined surface on the rib,
The lubricating oil attached to the ribs is efficiently dropped and stored in the oil storage chamber.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. In describing the embodiments, those having the same functions will be denoted by the same reference numerals.

FIG. 1 is a sectional view of a gas compressor according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG.
FIG. 4 is a front view of a rib forming part of a gas compressor according to another embodiment of the present invention, and FIG. 4 is a front view of a rib forming part of a gas compressor according to another embodiment of the present invention.

In the gas compressor shown in FIGS. 1 and 2, an opening end of a casing 11 is closed by a front head 12, a compressor body 13 is housed in the casing 11, and an electromagnetic clutch 30 is attached to the compressor body 13. Are connected.

The electromagnetic clutch 30 includes a front head 29
A pulley 32 rotatably disposed via a bearing 31 on the side of the clutch plate 3 on the tip end side of the pulley 32.
3 is disposed, and a coil case 34 is disposed on the rear end face side of the pulley 32. The clutch plate 33 includes an elastic member 35.
And is integrally connected to a rotor shaft to be described later,
The elastic member 35 constantly pulls the pulley 32 away from the distal end surface. The coil case 34 is connected to the front head 2 via a mounting plate 36 and a retaining ring 37.
The electromagnetic coil 38 is housed inside the power supply unit 9. The electromagnetic coil 38 brings the pulley 32 and the clutch plate 33 into close contact with each other by the attractive force of the excitation.

The compressor body 13 has a cylinder 16 having a substantially elliptical cylindrical shape on the inner periphery between a front side block 14 and a rear side block 15, and a cylinder chamber 39 formed by the side blocks 14, 15 and the cylinder 16. Is horizontally mounted so that the rotor 18 can rotate.

The rotor 18 is integrally provided with a rotor shaft 18a penetrating between end faces thereof, and the rotor shaft 18a is supported by an F bearing 14a of the front side block 14 and an R bearing 15a of the rear side block 15.

A slit-shaped vane groove 17 is formed in the rotor 18 in the radial direction.
9, 19 ... are mounted to be able to move forward and backward, and vanes 19, 19
Are energized toward the inner wall side of the cylinder 16 by the centrifugal force and the oil pressure at the bottom of the vane groove when the rotor 18 rotates.

Front and rear side blocks 14,
15, cylinder 16, rotor 18, vanes 19, 19 ...
The small chamber of the cylinder chamber 39 partitioned by the compression chamber 2
The capacity change is repeated as 1, 21,... By the rotation of the rotor 18.

In such a gas compressor, when the electromagnetic coil 38 is excited, the clutch plate 33 is drawn toward the pulley 32 by the attraction of the electromagnetic coil 38, whereby the elastic member 35 is elastically deformed. Pulley 32
And the clutch plate 33 come into close contact with each other. As a result, the rotational force of the pulley 32 is transmitted to the rotor shaft 18a via the clutch plate 33 and the elastic member 35, and the pulley 32 and the rotor shaft 18a
And the rotor 18 rotates integrally.

The rotation of the rotor 18 causes the compression chambers 21, 21,.
When the capacity changes, the low-pressure refrigerant gas in the suction chamber 22 is sucked and compressed by the change in capacity. At this time, the low-pressure refrigerant gas in the suction chamber 22 is introduced from the air conditioning system side (not shown) outside the casing 11 through the suction port 11a.

The compressed high-pressure refrigerant gas is supplied to the compression chambers 21 and
1 to the discharge hole (not shown) of the cylinder 16, the discharge communication path of the rear side block 15, the oil separator 25, the discharge chamber 26
, And then the casing 1
1) to the outside air conditioning system side.

At this time, the oil separator 15 separates the lubricating oil A from the high-pressure refrigerant gas, and the separated lubricating oil A is supplied to the discharge chamber 2.
6. The oil is collected in the oil storage chamber 27 below. A plurality of ribs 11d are formed on the inner wall of the discharge chamber 26 so as to protrude in the horizontal direction (see also FIG. 3), and the high-pressure refrigerant gas discharged into the discharge chamber 26 is supplied to the plurality of ribs 11d. They collide and their flow velocity decreases. Therefore, the residence time of the high-pressure refrigerant gas in the discharge chamber 26 is prolonged, and the lubricating oil A in the high-pressure refrigerant gas is reliably dropped into the oil storage chamber 27 and separated.

The discharge chamber 26 and the oil storage chamber 27 are provided on the inner wall of the casing 11 so as to protrude horizontally.
1c, the lubricating oil A in the oil storage chamber 27 is prevented from being wound up by the discharge flow of the high-pressure refrigerant gas and returning to the discharge chamber 26. Further, an oil passage 11e is formed at the tip of the partition plate 11c.
e, the lubricating oil A in the discharge chamber 26 is stored in the oil storage chamber 27. Thus, the lubricating oil A stored in the oil storage chamber 27 is supplied to the F bearing 14 via the oil passage 28.
a, and is supplied under pressure to a sliding portion such as the R bearing 15a.

This pressure feeding is performed by the compression chamber 21 and the oil storage chamber 2.
7, that is, due to the pressure difference between the low-pressure section and the high-pressure section, and the reason why the oil storage chamber 27 is the high-pressure section is that the compressed high-pressure refrigerant gas passes through the oil storage chamber 27 as described above. It is.

As described above, the discharge holes 23 are formed in the compression chambers 21 and
1 to the oil storage chamber 27 as a means for discharging the compressed high-pressure refrigerant gas to the oil storage chamber 27 side, and the oil passage 28 is provided between the oil storage chamber 27 and the sliding portion of the compressor body 13 (F bearings 14a, R
It is provided as a means for pressure-feeding and supplying the lubricating oil A to the bearing 15a).

As described above, according to the gas compressor of the present embodiment, since the plurality of ribs 11d are formed on the inner wall of the discharge chamber 26, the high-pressure refrigerant gas collides with the plurality of ribs 11d. Since the flow velocity is reduced, the residence time of the high-pressure refrigerant gas in the discharge chamber 26 is lengthened, and the lubricating oil A in the high-pressure refrigerant gas is reliably dropped into the oil storage chamber 27 and separated. Therefore, since the high-pressure refrigerant gas having a low content of the lubricating oil A is discharged from the gas compressor, the amount of the lubricating oil A flowing out into the air conditioning system can be reduced, and the heat exchange property of the evaporator is improved. In addition, the cooling effect of the air conditioning system can be improved.

As described above, the gas compressor according to the embodiment of the present invention has been described in detail. However, the present invention is not limited to the gas compressor described in the above embodiment, but is defined by the claims of the present invention. Various changes in design may be made without departing from the spirit of the described invention.

For example, in the gas compressor according to the present embodiment, a plurality of ribs 11d protruding in the horizontal direction from the inner wall of the discharge chamber 26 have been described. However, as shown in FIG. A rib 11f may be formed in which a central portion is bent upward and both sides are inclined downward. According to this, the lubricating oil A attached to the rib 11f is efficiently dropped and stored in the oil storage chamber 27, and the separation of the high-pressure refrigerant gas and the lubricating oil A can be promoted. Furthermore, partition plate 1
The same effect as that of the rib 11f can be obtained by protruding the inner wall of the casing 11 obliquely downward from the inner wall of the casing 11 also.

[0033]

As will be understood from the above description, in the gas compressor of the present invention, since a plurality of ribs are formed on the inner wall of the discharge chamber, the high-pressure refrigerant gas collides with the plurality of ribs, and the flow velocity thereof is reduced. As a result, the residence time of the high-pressure refrigerant gas in the discharge chamber is prolonged, and the lubricating oil in the high-pressure refrigerant gas is reliably dropped and separated into the oil storage chamber.

In addition, since the inclined surface is formed on the rib, the lubricating oil attached to the rib efficiently drops into the oil storage chamber, and the separation of the high-pressure refrigerant gas and the lubricating oil is promoted.

Accordingly, a high-pressure refrigerant gas having a low lubricating oil content is discharged from the gas compressor, and the amount of lubricating oil flowing out to the air conditioning system can be reduced. As a result, the heat exchange of the evaporator of the air conditioner system is efficiently performed, and the cooling effect of the air conditioner system can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a gas compressor showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a front view of a rib forming portion of the gas compressor according to the embodiment of the present invention.

FIG. 4 is a front view of a rib forming portion of a gas compressor according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional gas compressor.

[Explanation of symbols]

 Reference Signs List 11 casing 11a suction port 11b discharge port 11c partition plate 11d, 11f rib 12 front head 13 compressor body 14 front side block 14a F bearing 15 rear side block 15a R bearing 16 cylinder 17 vane groove 18 rotor 18a rotor shaft 19 vane 21 compression chamber Reference Signs List 22 suction chamber 23 discharge hole 25 oil separator 26 discharge chamber 27 oil storage chamber 28 oil passage 29 front head 30 electromagnetic clutch 31 bearing 32 pulley 33 clutch plate 34 coil case 35 elastic member 36 mounting plate 37 retaining ring 38 electromagnetic coil 39 cylinder Chamber A Lubricating oil

Claims (2)

[Claims] An inner cylindrical member provided between a pair of side blocks and a rotor rotatably suspended in a cylinder chamber formed by the pair of side blocks and the cylinder; A compressor main body including a vane slidably mounted in a vane groove formed in the rotor; and an oil storage chamber for storing lubricating oil supplied to a sliding portion of the compressor main body. Thus, in the gas compressor that draws the refrigerant gas into the cylinder chamber and compresses the compressed high-pressure refrigerant gas and discharges the compressed high-pressure refrigerant gas to the discharge chamber above the oil storage chamber, a plurality of ribs are formed on the inner wall of the discharge chamber. Features a gas compressor. 2. The gas compressor according to claim 1, wherein an inclined surface is formed on said rib.