KR0118133Y1 - Lubricating oil supplier for the cylnder of a refrigerant compressor - Google Patents

Abstract

The present invention relates to a device for lubricating oil to a cylinder of a compressor used in a refrigerator, a cold beverage vending machine, a freezer, etc. More specifically, a refrigerant and a lubricating oil are supplied to a surface contact portion of a cylinder and a piston to smoothly drive the oil. The present invention relates to a cylinder lubricating oil lubrication device for refrigeration and freezer compressors, in which cooling oil in the compressor 10 is pumped up so as to prevent dilution of oil as much as possible, thereby improving cooling capacity, increasing operation efficiency, and reducing noise. Oil supply pump 20 for lubricating the cylinder 11, drive cap 30 attached to the drive shaft 12 of the compressor 10 to operate the oil supply pump, cooling supplied by the oil supply pump 20 The oil is supplied to the friction surface of the cylinder 11 and the piston 13 so as to lubricate the inlet 111 installed in the cylinder 11 and the remaining oil in the oil supplied to the cylinder 11. The outlet port 112 and the distribution port 131 installed to penetrate the piston 13 to be discharged to the outside is characterized in that it comprises.

Description

Cylinder Lubrication Oil Lubrication Equipment for Refrigeration and Freezer Compressor

1 is a cross-sectional view showing a schematic configuration of a compressor to which the present invention is applied.

2 is an enlarged cross-sectional view of the excerpts of the present invention.

3 is a partial cross-sectional view of the same part.

Figure 4 is a cross-sectional view showing the operating state of the cylinder in which lubrication oil is oiled by the present invention.

5 is an exploded perspective view of the check valve used in the present invention.

* Explanation of symbols for the main parts of the drawings

10: Compressor 11: Cylinder

12: Drive shaft 13: piston

20: oil supply pump 21: suction port

22: Extrusion port 23: Pump room

24: Tandem spring 26: Compression rod

27, 27 ': Check valve 30: Drive cam,

111: inlet 112: outlet,

131: distribution outlet

The present invention relates to a cylinder lubricating oil lubrication device of a compressor for refrigerators and freezers. More specifically, the lubricating oil is concentrated in the surface contact portion of the cylinder and the piston to prevent the refrigerant and oil from being diluted to the maximum, thereby improving the cooling capacity and The present invention relates to a cylinder lubricating oil lubrication device for a compressor to obtain an increase in operating efficiency and a noise reduction effect.

A cylinder lubricating oil lubrication device for a compressor used in a refrigerator or a freezer of a conventional refrigerator or cold beverage vending machine, as shown in FIG. 6, is a piston 4 in the cylinder 3 by the drive shaft 2 of the compressor 1. ), The oil is sucked into the cylinder 3 through the oil supply pipe 5 through the cylinder cover 6 side by the suction force generated during the reciprocation of the forward and backward reciprocation, and the friction surface of the cylinder 3 and the piston 4 It is configured to lubricate and lubricate.

However, such a conventional lubrication device is diluted with the refrigerant sucked and compressed in the cylinder than the amount of lubricated oil lubricating the friction surface, the amount of oil flowing into the refrigeration cycle is more, the oil noise generated in the condenser, and There are disadvantages such as impeding the flow of the coolant to degrade the performance.

In addition, since the cooling oil of the compressor flows into the refrigerating cycle, the cooling function of the heat generated during the operation of the compressor is lowered, thereby increasing the temperature of the compressor, and the compression efficiency is lowered because it does not sufficiently cool the heat generated during the reciprocating motion of the piston. There were many problems.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a lubricating oil lubrication device which prevents the lubricating oil which is zeroly lubricated into the cylinder from being diluted with the refrigerant sucked and compressed by the cylinder. will be.

Another object of the present invention is to provide a lubricating oil lubrication device for preventing the cooling oil of the compressor from flowing into the refrigeration cycle to improve the compression efficiency.

This object of the present invention is achieved by providing a lubricating oil lubrication device that allows the lubricating oil lubricated into the cylinder to be concentrated lubricated to the friction surface side of the cylinder and piston. The lubrication oil is directed to the friction surface side of the cylinder and piston. An oil supply pump for lubrication is provided, and a drive cam is provided on the drive shaft to operate the oil supply pump.

The oil supply pump is installed at the lower part of the cylinder, and is provided with a compression rod that is operated by a driving cam to perform a pumping action.

The oil lubricated by the lubrication pump is lubricated through the lubrication pipe to the friction surface side of the cylinder and piston.

At this time, the inlet is provided on the upper surface of the cylinder, and the outlet on the lower surface thereof, respectively, so that the oil being lubricated can be lubricated to the friction surface side of the cylinder and the piston. When the piston reaches the bottom dead center, the inflow and outflow There is a distribution channel to communicate with the spheres.

Therefore, when the piston is located at the bottom dead center, most of the oil flowing through the inlet of the cylinder flows out of the cylinder through the outlet and the outlet, and only a portion of the oil is lubricated to the friction surface. Since the oil is lubricated to the friction surface, the oil is prevented from being diluted in the refrigerant unnecessarily, and the lubrication function can be sufficiently exhibited.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a compressor 10 to which a lubricating oil lubrication device according to an embodiment of the present invention is applied.

The lubricating oil lubrication device of the present invention includes a lubrication oil pump 20 for pumping oil 0 in the compressor 10 to the cylinder 11 and a drive installed in the drive shaft 12 to operate the lubrication pump. An inlet through which the cam 30 and the oil (0) lubricated by the lubrication pump (20) are penetrated to the upper surface of the cylinder (11) so as to be lubricated to the friction surface (a) of the cylinder (11) and the piston (13). It consists of a (111), the outlet port 111, 112 is installed through the lower surface of the cylinder, and the distribution port 131 is installed vertically through the piston (13).

A suction pipe 41 for sucking oil (0) is connected to the suction port 21 of the oil supply pump, and the extrusion port 22 and the inlet port 111 are connected to the oil supply pipe 42.

2 and 3 show the oil supply pump 20 in detail.

The oil supply pump has a pump chamber 23 and a compression rod 26 which is coupled to penetrate through a through hole in the front of the pump chamber and is installed to be forwardly blown forward by the ball spring 24 and the fixing ring 25. • Check valves 27 and 27 'are provided in the extrusion ports 21 and 22, respectively.

Then, the spring 24 and the fixing ring 25 is wrapped by the cover 28, the fixing ring 25 is fixedly installed on the front end side of the compression rod 26 to support the tip of the spring 24.

The tip of the compression rod 26 penetrates through the through hole in the front surface of the cover 28 and is exposed to the front to be in close contact with the drive cam 30.

In Fig. 5, check valves 27 and 27 'are shown in detail.

These check valves are composed of upper and lower valve bodies 271 and 271 'and check balls 273 and 273' which are incorporated in the valve holes 272 and 272 'in these valve bodies, respectively.

The valve body 271 and the valve hole 272 are formed in a cone shape of the upper narrow down light, the lower valve body 271 'and the valve hole 272' is formed in an inverted circumferential shape of an upper light lower narrow shape, The bottom surface and the upper surface having a large area are respectively attached to the suction and extrusion ports 21 and 22 so as to be in close contact with each other.

Valve ball 272 is, " Since the check balls 273 and 273 'are raised so as not to be blocked, the valve ball 272' is formed into a circular shape, and thus the check balls 273 and 273 'are blocked when the check balls 273 and 273' are lowered.

The inflow and outflow ports 111 and 112 are installed to penetrate through the upper and lower surfaces of the cylinders 11 on the same line, and the distribution port 131 is located at the bottom dead center as shown in FIG. When positioned, they are placed in a line with the inflow and outflow ports 111 and 112, and are distributed to each other. It is provided to penetrate up and down in the (13).

In addition, the piston 13 is coupled to the other end of the cam rod 15 to be reciprocated by the drive shaft 12 so as to linearly move in the cylinder 11.

The operation of the lubricating oil oil supply device according to the embodiment of the present invention configured as described above is as follows.

When the drive shaft 12 is rotated, the piston 13 is moved forward and backward in the cylinder 11 by the operation of the cam rod 15, so that the refrigerant is sucked into and compressed into the cylinder.

In this process, since the drive cam 30 installed below the drive shaft 12 is also rotated, the compression rod 26 of the oil supply pump 20 is simultaneously moved by the action of the drive cam 30 and the carbon spring 24. After the reciprocating operation, the pumping operation is performed.

When the pumping operation proceeds as described above, part of the oil (0) in the compressor (10) is sucked into the pump chamber (23) through the suction pipe (41) and is lubricated to the cylinder (11) side through the oil feed pipe (42).

The oil 0 can be lubricated by the lubrication pump 20 to the cylinder 11 side in the pump chamber 23 when the compression rod 26 is advanced by the elastic force of the carbon spring 24. Since the suction force is generated, the check ball 273 'in the check valve 27' of the extrusion port 22 is lowered to the lower end of the valve hole 272 'of the lower valve body 271' by this suction force. The valve ball is blocked, and on the contrary, the check ball 273 in the check valve 27 of the suction port 21 rises into the valve hole 272 of the upper valve element 271.

In this case, the valve ball 272 is “ Since the check ball 273 is raised, the check ball 273 is not blocked by the check ball, and at the same time, the valve hole 272 of the lower valve body 271 'is opened, so that the oil in the compressor 10 Some of them are sucked into the pump chamber 23 through the check valve 27 'through the suction pipe 41 by the suction force generated in the pump chamber 33.

On the other hand, when the compression rod 26 is pushed back by the drive cam 30, the compression force is applied to the pump chamber 23. At this time, the check ball 273 of the check valve 27 on the suction port 21 side is It is lowered to block the valve hole 272 ', and on the contrary, the check ball 273' of the check valve 27 'on the extrusion port 22 is raised so that the valve hole 272 is opened so that it is sucked into the pump chamber 23. The oil (0) is supplied to the cylinder (11) side through the oil supply pipe (42) via the check valve (27 ').

As a result of the operation of the oil supply pump 20, the suction and the oil supply operation of the oil (0) are repeatedly performed. When the oil (0) is sucked into the pump chamber 23, the piston 13 is moved in FIG. As it can be seen to advance to the bottom dead center, the distribution port 131 is located on the same line as the inlet and outlet 111 and 112, so as to communicate with each other remaining in the inlet 111 and the distribution port 131 The oil flows down into the compressor 10 via the outlet 112.

On the contrary, when oil (0) sucked into the pump chamber (23) is fed to the cylinder (11) side via the oil supply pipe (42) by the compression action of the oil supply pump (20), the piston (13) is reversed As shown in FIG. 4 (b), the oil flows to the cylinder 11 and the piston 13 as the distribution port 131 is displaced from the inlet / outlet 111 and 112. Lubrication is to be supplied to the friction surface (a) of the).

The present invention in which the lubricating oil is lubricated to the friction surface a of the cylinder 11 and the piston 13 by the repetition of this operation, the lubricated oil is lubricated to the space in the cylinder 11 where the refrigerant is sucked and compressed In this case, the oil is intensively supplied only to the friction surface (a), and since the excess oil flows out of the cylinder 11 through the outlet 112, the amount of oil diluted in the refrigerant is reduced as much as possible.

Accordingly, the present invention effectively prevents oil from flowing into the refrigeration cycle, thereby eliminating noise and smoothly flowing the refrigerant, thereby improving the performance of the compressor.

Claims (2)

It is installed to pump up the oil in the compressor (10) to the cylinder 11 side, the pump chamber 23 is provided with an oil inlet port 21 and the extrusion port 22, and coupled to penetrate the front of the pump chamber An oil supply pump (20) having a compression rod (26) and a carbon spring (24) installed to carbonize the rod; Check valves 27 and 27 'provided in the suction / extrusion ports 21 and 22 of this oil supply pump; A drive cam (30) attached to a lower portion of the drive shaft (12) for operating the piston (13) of the cylinder to reverse the compression rod (26); An inlet 111 penetrating the upper surface of the cylinder such that oil supplied to the oil supply pump with the cylinder 11 is supplied to the friction surface of the cylinder and the piston 13; An outlet 112 installed through the lower surface of the cylinder such that residual oil in the oil lubricated through the inlet is discharged to the outside of the cylinder 11; A cylinder lubrication oil lubrication device for a compressor for a refrigerator / freezer, characterized in that it comprises a distribution port (131) installed vertically through the piston so that the introduced oil flows. According to claim 1, wherein only the outlet 111, 112 and the distribution port 131 is installed so that the piston 13 is in a straight line with each other when the piston 13 is advanced in the cylinder 11 to reach the bottom dead center. A cylinder lubricating oil lubrication device for a refrigerator / freezer compressor.