KR101453099B1 - Oil leaking prevention device for compressor - Google Patents

Abstract

The present invention relates to an oil outflow zone for a compressor. The present invention relates to an air conditioner comprising a chamber body 201 which is in close contact with an edge of a suction port 103 or a discharge port 105 of a compressor 100 and a suction port 103 formed to protrude from the chamber body 201, And a port sealing portion 205 that is inserted into the discharge port 105 to shield the suction port 103 or the discharge port 105. A through hole 202 is formed in the earth main body 201 so that the suction port 103 or the discharge port 105 communicates with the outside so that the inside and the outside of the compressor 100 communicate with each other. Accordingly, there is an advantage that the oil outlet chamber 200 is prevented from being separated by the high pressure inside the compressor 100.

Compressor, Oil spill area, Through hole

Description

[0001] Oil leaking prevention device for compressor [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an oil outflow chamber for a compressor, and more particularly, to an oil outflow chamber for a compressor, in which oil stored in a compressor during storage and transportation of the compressor is discharged through a suction port and a discharge port, To an oil outflow chamber for a compressor.

Generally, a compressor used in an automotive air conditioning system sucks refrigerant evaporated from an evaporator and transfers it to a condenser in a state of high temperature and high pressure which is easy to be liquefied.

The air conditioning system of the vehicle will be described in more detail. First, the refrigerant in the high-temperature and low-pressure gaseous state enters the high-temperature high-pressure gas state by the compression action of the compressor through the compressor. The high-temperature high-pressure gaseous refrigerant flows into the high-temperature high-pressure liquid state by the condensing action of the condenser through the condenser, and the refrigerant in the high-temperature high-pressure liquid state flows through the expansion valve to the low- do. The refrigerant in the low-temperature low-pressure liquid state is returned to the high-temperature low-pressure gaseous state through heat exchange from the evaporator through the evaporator, and the high-temperature low-pressure gas is again compressed by the compressor to become a high-temperature high-pressure gaseous state. This process is repeated a plurality of times to circulate the air conditioning system of the vehicle.

The compressor for compressing the refrigerant includes a reciprocating type in which compression is actually performed while reciprocating the structure for actually compressing the working fluid, and a rotary type in which compression is performed while rotating.

In the reciprocating type, there is a crank type in which the driving force of the driving source is transmitted using a crankshaft, a swash plate type in which the swash plate is transmitted, and a wobble plate type in which a wobble plate is used. Rotary types include rotary rotary axes with vane rotary vanes, scrolling with rotary scrolls and fixed scrolls.

The outer appearance of the compressor is formed by a cylinder block provided between the front and rear housings and the front and rear housings. A plurality of cylinder bores are formed in the cylinder block, and a piston connected to a driving shaft through which a driving force is transmitted is installed in the cylinder bore. The piston reciprocates within the cylinder bore to compress the refrigerant.

The cylinder bore communicates with a suction port and a discharge port formed on one side of the compressor, respectively. The suction port is a portion into which refrigerant flows, and the discharge port is a portion in which refrigerant flows out.

A valve plate is provided between the front and rear housings and the cylinder block so that the cylinder bore, the suction port, and the discharge port are selectively communicated by the valve plate.

Inside the compressor, lubricating oil is stored to reduce the friction generated between the respective components in the operation of the compressor, such as the rotation of the drive shaft and the reciprocating motion of the piston. Such lubricating oil may leak to the outside through the suction port and the discharge port during storage and transportation of the compressor.

In order to prevent the lubricating oil from leaking from the inside of the compressor through the suction and discharge ports, the oil discharge port is coupled to the suction and discharge ports to shield the suction and discharge ports.

FIG. 1 is a cross-sectional view of a structure of an oil outflow prevention chamber for a compressor according to the prior art.

According to this figure, the outer surface of one side of the compressor 10 is formed by the rear housing 11 in which the ports 13 and 15 are formed. The ports 13 and 15 include a suction port 13 through which an external refrigerant flows into the compressor 10 and a discharge port 15 through which the compressed refrigerant is discharged to the outside.

Although not shown, a central portion of the inner surface of the rear housing 11 is divided to form a discharge chamber, and a suction chamber is formed around the discharge chamber. The discharge chamber communicates with the discharge port (15), the suction chamber communicates with the suction port (13), the discharge chamber is a space where compressed refrigerant is stored, and the suction chamber is a space where refrigerant sucked is stored.

The suction port (13) and the discharge port (15) are shielded by the oil outflow barrier (20). The oil outlet chamber 20 is provided in the suction port 13 and the discharge port 15 to prevent the lubricant from leaking to the suction and discharge ports 13 and 15, respectively.

The oil outlet chamber 20 includes a chamber body 21 forming a skeleton and a port sealing portion 23 provided on one side of the chamber body 21 for shielding the ports 13 and 15, . The port sealing portion 23 is formed of an elastic material such as rubber and is pressed against the suction and discharge ports 13 and 15 to shield the suction and discharge ports 13 and 15, respectively.

A bead portion 25 protrudes from the outer surface of the port sealing portion 23. The bead portion 25 is closely adhered to the inner surfaces of the ports 13 and 15 in a predetermined elastic deformation so as to seal between the port sealing portion 23 and the ports 13 and 15, And at the same time, fixing the oil outflow preventing portion 20 so as not to be separated from the rear housing 11. [

However, the oil outflow chamber for a compressor according to the prior art having such a configuration has the following problems.

The oil outflow preventing portion 20 prevents the lubricant from leaking from the inside of the compressor 10 when the compressor 10 is stored or transported for a long time in a state where the compressor 10 is separated from the vehicle by blocking the suction and discharge ports 13, .

However, when the compressor 10 is stored or transported for a long time in a state where the oil outlet 20 is coupled to the compressor 10, the inside of the compressor 10 may be in a state of high temperature and high pressure In this case, there is a problem that the oil outlet chamber 20 is protruded from the suction and discharge ports 13, 15 due to the internal pressure of the compressor 10.

The amount of protrusion of the bead portion 25 of the oil outflow preventing portion 20 is increased so that the oil outflow preventing portion 20 can be more reliably pressed into the suction and discharge ports 13 and 15 There is a problem that the coupling force for coupling the oil outlet chamber 20 to the suction and discharge ports 13 and 15 and the separating force for separating the oil outlet chamber 20 from each other are increased and the workability is deteriorated. In such a case, when the operator separates the oil outlet chamber 20 from the suction and discharge ports 13 and 15, the problem arises that the lubricant oil is scattered by the high temperature and high pressure environment inside the compressor 10 do.

SUMMARY OF THE INVENTION An object of the present invention is to provide an oil outflow chamber in which a through hole for communicating the inside and the outside of the compressor is formed.

According to an aspect of the present invention for achieving the above object, the present invention provides a compressor for a compressor, which is coupled to a compressor having a suction port and a discharge port communicating with the inside of the suction port and the discharge port, And a port sealing member inserted into the suction port or the discharge port and shielding the suction port or the discharge port, the port body being protruded from the chamber body and being shielded from the suction port or the discharge port, And a through hole is formed in the chamber body so that the suction port or the discharge port communicates with the outside.

The port sealing portion is formed in a hollow cylindrical shape in which a deformation space is formed, and the through hole is communicated with the deformation space through the diaphragm body.

The inner diameter of the through-hole is 0.1 mm to 0.5 mm.

The through hole is formed at a position distant from the center of the suction port or discharge port in a direction opposite to the gravitational direction in a state where the oil outlet region is coupled to the compressor.

According to the oil spill prevention zone for a compressor according to the present invention, the following effects can be expected.

According to the present invention, since the through hole is formed in the oil outflow prevention zone and air can flow into the inside and the outside of the compressor, it is possible to prevent the oil outflow prevention zone from being separated by the high pressure inside the compressor, There is an effect that oil can be prevented from leaking during the process.

According to the present invention, since the pressure difference between the inside and the outside of the compressor can be prevented from being increased by the through-hole formed in the oil outflow blocking region, the oil outflow preventing zone can be easily separated from the compressor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

2 is a cross-sectional view showing a structure of a preferred embodiment of an oil outflow preventing chamber for a compressor according to the present invention. FIG. 3 is a perspective view showing an oil outflow preventing structure for a compressor according to an embodiment of the present invention. There is shown a graph showing whether or not the oil leakage is caused by a change in the inner diameter of the through hole constituting the embodiment of the present invention.

The outer appearance of the compressor 100 includes a front housing (not shown) and a rear housing 101 and a cylinder block (not shown) provided between the front housing and the rear housing 101 Not shown). A plurality of cylinder bores are formed in the cylinder block, and a piston connected to a driving shaft through which a driving force is transmitted is installed in the cylinder bore. The piston reciprocates within the cylinder bore to compress the refrigerant.

Reference numeral 101 denotes a rear housing. The rear housing 101 forms an outer surface of one side of the compressor 100. The suction port (103) and the discharge port (105) are formed in the rear housing (101). The suction port 103 and the discharge port 105 are roughly divided into a suction port 103 and a discharge port 105.

The suction port 103 serves as a passage through which refrigerant flows. The suction port 103 selectively communicates with the cylinder bore and a valve unit (not shown) Is introduced into the cylinder bore. The suction port 103 is formed through the rear housing 101 so as to have a substantially circular cross section.

On the surface of the rear housing 101 where the suction port 103 is formed, a discharge port 105 is formed. The discharge port 105 serves as a passage through which the refrigerant compressed by the operation of the compressor 100 is discharged.

The discharge port 105 is also selectively communicated with the cylinder bore by the valve unit so that the refrigerant compressed in the cylinder bore is discharged to the outside. The suction port 103 is formed through the rear housing 101 such that the suction port 103 is circular in cross-section.

Although not shown, a central portion of the inner surface of the rear housing 101 is divided into a discharge chamber, and a suction chamber is formed around the discharge chamber so as to be separated from the discharge chamber. The discharge chamber communicates with the discharge port (105), and the suction chamber communicates with the suction port (103)

The suction chamber is a space in which the refrigerant introduced into the compressor 100 through the suction port 103 is temporarily stored, and the refrigerant compressed by the operation of the compressor 100 is temporarily stored in the discharge chamber. It is a space to be stored. The refrigerant stored in the suction chamber flows into the cylinder bore and is compressed. The refrigerant stored in the discharge chamber is transferred to the outside of the compressor (100) through the discharge port (105) and transferred to the condenser.

The suction port (103) and the discharge port (105) of the rear housing (101) are shielded by the oil outlet chamber (200). The oil outlet chamber 200 is installed in the suction port 103 and the discharge port 105 of the rear housing 101 to seal the suction port 103 and the discharge port 105, The oil stored in the compressor 100 is prevented from flowing out through the suction port 103 and the discharge port 105 during storage and transportation of the compressor 100. The entirety of the oil outlet chamber 200 is made of a material having elasticity such as a urethane.

The skeleton of the oil outlet chamber 200 is formed by a plate body 201 having a predetermined thickness. When the oil outlet chamber 200 is coupled to the compressor 100, the chamber body 201 is connected to the suction port 103 or the discharge port 105 of the rear housing 101 corresponding to the edge of the discharge port 105 And is in contact with the outer surface.

A through hole 202 is formed in the earth body 201. The through hole 202 is formed to penetrate through the insulation body 201 to communicate between the inside of the suction port 103 and the discharge port 105 and the outside of the compressor 100. That is, the through-hole 202 prevents the inside of the compressor 100 from being in a high-temperature and high-pressure state during storage and transportation of the compressor 100, and the oil outflow chamber 200 is connected to the suction port 103 Or discharging from the discharge port 105. In addition, the through hole 202 reduces the pressure difference between the inside and the outside of the compressor 100, so that the oil outlet chamber 200 can be easily separated from the compressor 100.

2, the through-hole 202 communicates with the deformation space 206 of the port sealing portion 205, which will be described below, through the earth's main body 201. As shown in FIG. As a result, the through hole 202 is communicated with the inside of the suction port 103 or the discharge port 105 and the inside of the compressor 100 As shown in Fig.

At this time, the inner diameter of the through hole 202 is preferably 0.1 mm to 0.5 mm. This is because the air between the inside and the outside of the compressor 100 can flow through the through hole 202 but the oil inside the suction port 103 or the discharge port 105 leaks to the outside, So that it can be prevented from being introduced into the suction port (103) or the discharge port (105).

FIG. 4 is a graph showing experimental data as to whether or not the oil flows out according to a change in the inner diameter of the through hole 202. As shown in the figure, when the inner diameter of the through hole 202 is 0.5 mm or less, the oil in the suction port 103 or the discharge port 105 does not flow out to the outside. However, . Therefore, it is preferable that the inner diameter of the through hole 202 is formed to be 0.5 mm so that the air in the compressor 100 can communicate with the air as much as possible and the oil can be prevented from flowing out.

The through hole 202 may be formed at a position distant from the center of the earth body 201 in the direction opposite to the gravity direction when the oil outlet chamber 200 is coupled to the compressor 100 . This is to prevent oil from reaching the periphery of the inlet of the through hole 202 when the oil is not filled in the suction port 103 or the discharge port 105. The flow of air between the inside of the suction port 103 or the discharge port 105 and the outside of the compressor 100 can be made more smooth through the through hole 202. [

A handle 203 for gripping the oil outflow chamber 200 is provided on one surface of the earth body 201. Accordingly, the operator can grip or separate the oil outlet chamber 200 from the suction port 103 and the discharge port 105 of the compressor 100 by holding the handle 203. Of course, the handle 203 may be omitted from the oil outflow barrier 200.

A port sealing portion 205 is provided on the opposite side of the surface of the earth body 201 on which the handle 203 is provided. The port sealing portion 205 is formed in a cylindrical shape having a substantially predetermined length and is positioned inside the suction port 103 and the discharge port 105 to seal the suction port 103 and the discharge port 105, . The outer diameter of the port sealing portion 205 is smaller than the inner diameter of the suction port 103 and the discharge port 105 so that the port sealing portion 205 can be easily inserted into the suction port 103 and the discharge port 105. [ .

More precisely, as shown in FIG. 2, the port sealing portion 205 is a hollow cylindrical shape in which a deformation space 206 is formed. The deformation space 206 corresponds to a free space that allows the port sealing portion 205 to be easily elastically deformed in the process of being inserted into the suction port 103 and the discharge port 105.

At this time, the port sealing portion 205 is formed around the through hole 202, and the deformation space 206 is communicated with the through hole 202. The deformation space 206 communicates with the outside of the compressor 100 and consequently the suction port 103 and the discharge port 105 can communicate with the outside of the compressor 100. [

 A bead portion 207 protrudes from the outer surface of the port sealing portion 205. The bead portion 207 is formed into a curved surface whose surface has a predetermined radius. When the port sealing portion 205 is inserted into the suction port 103 and the discharge port 105, the bead portion 207 is elastically deformed by a predetermined amount, so that the suction port 103 and the discharge port 105 And seals between the port sealing portion 205 and the inner surfaces of the suction port 103 and the discharge port 105. Although three bead portions 207 are formed in this embodiment, more than four bead portions 207 may be formed as needed.

Hereinafter, the process of coupling the oil outlet region for a compressor to the suction port and the discharge port of the compressor according to the embodiment of the present invention will be described in detail.

All parts are assembled and oil for lubrication and cooling is left in the completed compressor 100. [ The oil in the compressor 100 may leak to the outside through the suction port 103 and the discharge port 105 of the compressor 100. Therefore, prior to storing or conveying the compressor 100, (100) to the suction port (103) and the discharge port (105), respectively. That is, the operator assemble and store the oil outflow chamber 200 to the suction port 103 and the discharge port 105 of the compressor 100, and when the compressor 100 is used afterwards, (200) are separated from each other.

The operator joins the oil outlet chamber 200 to the suction port 103 and the discharge port 105. At this time, the port sealing portion 205 of the oil outlet chamber 200 is connected to the outlet port 105 of the compressor 100 To be inserted into the suction port (103) and the discharge port (105).

The bead portion 207 of the port sealing portion 205 is inserted into the suction port 103 and the discharge port 105 when the port sealing portion 205 of the oil outflow blocking portion 200 is inserted into the suction port 103 and the discharge port 105, And the portion corresponding to the inlet of the discharge port 105. Since the bead portion 207 is elastically deformable due to the nature of the material, the operator overcomes the elastic force of the bead portion 207 and inserts the port sealing portion 205 into the suction port 103 and the discharge port 105 do.

At this time, the bead portion 207 of the port sealing portion 205 is elastically deformed by a predetermined amount and inserted into the suction port 103 and the discharge port 105 so that the suction port 103 and the discharge port 105 The port sealing portion 205 is inserted into the suction port 103 and the discharge port 105 while being compressed on the inner surface.

The suction port 103 and the discharge port 105 of the compressor 100 are completely shielded by the port sealing portion 205 when the oil outlet chamber 200 is completely coupled to the compressor 100, The oil in the compressor 100 is prevented from leaking to the outside through the port 103 and the discharge port 105. [

The through hole 202 is formed in the annular body 201 of the oil outlet chamber 200 so that the oil outlet chamber 200 is coupled to the suction port 103 and the discharge port 105 The inside of the suction port 103 and the discharge port 105 and the outside of the compressor 100 are communicated. Accordingly, it is possible to prevent the inside of the compressor 100 from being in a state of high temperature and high pressure and to prevent the oil outflow chamber 200 from being separated from the suction port 103 and the discharge port 105 .

At this time, the diameter of the through hole 202 is 0.1 mm to 0.5 mm, and air can flow to the inside and the outside of the compressor 100, but oil does not leak or foreign matter does not flow.

The pressure difference between the inside and the outside of the compressor 100 is prevented from being increased by the through hole 202 of the oil outlet chamber 200. The operator can thereby control the oil outflow chamber 200 from the compressor 100, Can be easily separated with a relatively small force.

It is to be understood that the scope of the present invention is defined by the appended claims rather than by the foregoing description and that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. It is obvious that it can be done.

Although the deformation space 206 is formed in the port sealing portion 205 in the present embodiment, the deformation space 206 is not formed in the port sealing portion 205, 202 may be formed through the port sealing portion 205.

In this embodiment, the through-hole 202 is formed in a circular shape having a cross-sectional shape, but it is not limited thereto, and may have various shapes including a triangle or a square. In addition, the number of the through holes 202 is not necessarily one, and a plurality of through holes 202 may be formed in the earth body 201.

Although the bead portion 207 is formed on the outer surface of the port sealing portion 205 in the present embodiment, the bead portion 207 is not formed in the port sealing portion 205, 205 may be formed larger than the inner diameter of the suction port 103 and the discharge port 105 and may be press-fitted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a structure of an oil outflow prevention zone for a compressor according to a prior art; FIG.

FIG. 2 is a sectional view showing a configuration of a preferred embodiment of an oil outflow preventing chamber for a compressor according to the present invention. FIG.

3 is a perspective view showing the structure of an oil outflow prevention zone for a compressor according to an embodiment of the present invention.

FIG. 4 is a graph showing an oil leakage according to a change in an inner diameter of a through hole of a chamber body constituting an embodiment of the present invention. FIG.

Description of the Related Art [0002]

100: compressor 101: rear housing

103: Suction port 105: Discharge port

200: Oil spill room 201: Room earth body

202: through hole 203: handle 205: port sealing portion 206: deformation space

207:

Claims (3)

The suction port 103 and the discharge port 105 are connected to the compressor 100 through which the suction port 103 and the discharge port 105 communicate with the inside of the suction port 103 or the discharge port 105, And a discharge port 105 which is formed to protrude from the chamber body 201 and which is in contact with the edge of the suction port 103 or the discharge port 105, And a port sealing portion (205) which is inserted and shields the suction port (103) or the discharge port (105) A through hole 202 is formed in the earth body 201 so that the suction port 103 or the discharge port 105 communicates with the outside, The port sealing part 205 is formed in a hollow cylindrical shape in which a deformation space 206 is formed and the through hole 202 penetrates the deformation space 206 to form the deformation space 206, And an oil outlet zone for the compressor. delete The suction port 103 and the discharge port 105 are connected to the compressor 100 through which the suction port 103 and the discharge port 105 communicate with the inside of the suction port 103 or the discharge port 105, And a discharge port 105 which is formed to protrude from the chamber body 201 and which is in contact with the edge of the suction port 103 or the discharge port 105, And a port sealing portion (205) which is inserted and shields the suction port (103) or the discharge port (105) A through hole 202 is formed in the earth body 201 so that the suction port 103 or the discharge port 105 communicates with the outside, Wherein the through hole (202) has an inner diameter of 0.1 mm to 0.5 mm.

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