KR100363315B1 - Compressor axis sealing apparatus of airconditioner - Google Patents

Abstract

The present invention provides an air conditioner installed in a vehicle and the like for cooling the room, comprising a sealing means for preventing the leakage of refrigerant and oil on the shaft of the compressor for compressing the refrigerant according to the operation of the air conditioner. It is installed with a seal with a double seal, and the seal with a double seal is used to reduce the pressure difference by subtracting the pressure between one chamber and two chambers of the compressor, and the refrigerant and oil The present invention relates to a compressor shaft seal of an air conditioner to prevent leakage.

The present invention provides a piston for compressing the refrigerant while reciprocating in the cylinder and the compressor (1) is provided with a compressor shaft (2) for rotational movement for compression, the compressor shaft (2) the compressor ( In order to prevent the refrigerant and oil having a pressure compressed in the compression chamber 3 of 1) from leaking along the compressor shaft 2, a bracket 4 in which the compressor shaft 2 is installed is provided. A filter (5) for absorbing oil is installed at one end thereof, and the seal (6) (9) having a sealing portion (7) (10) consisting of double sealing blades (8) (11) is doubled on one surface thereof. The pressure chamber 12 is formed between the chambers 6 and 9 to subtract the pressure difference from the compression chamber 3.

Description

Compressor shaft seal of air conditioner {COMPRESSOR AXIS SEALING APPARATUS OF AIRCONDITIONER}

The present invention provides an air conditioner installed in a vehicle and the like for cooling the room, comprising a sealing means for preventing the leakage of refrigerant and oil on the shaft of the compressor for compressing the refrigerant according to the operation of the air conditioner. It is installed with a seal with a double seal, and the seal with a double seal is used to reduce the pressure difference by subtracting the pressure between one chamber and two chambers of the compressor, and the refrigerant and oil The present invention relates to a compressor shaft seal of an air conditioner to prevent leakage.

Conventionally, a typical vehicle has an air conditioner that is a cooling device for cooling the inside of a vehicle. The air conditioner is provided with a compressor and a condenser fan and a receiver dryer installed therein, and an evaporator is installed in the receiver dryer. The evaporator was connected to the compressor to form a refrigerant circuit.

In addition, the compressor receives power from the engine of the vehicle to compress the refrigerant and deliver the compressed refrigerant to the condenser. The compressor compresses the refrigerant while reciprocating in the cylinder as shown in FIG. 1. The compressor 101 is configured to install a compressor shaft 102 for rotational movement for compression.

In addition, the compressor shaft 102 is provided with a sealing means to prevent leakage of refrigerant and oil having a pressure compressed in the compression chamber 103 of the compressor 101 along the compressor shaft 102, It installs the seat ring 105 on one end bracket 104 of the compressor shaft 102 and the carbon ring 106 is installed on one surface thereof, and the seal 107 having an elastic function on one side of the carbon ring 106. Is configured to elastically install with a spring 108 and when pressure is generated in the compressor 101, the seal 107 pushes the carbon ring 106 toward the seat ring 105 by the pressure. Friction to prevent the leakage of refrigerant and oil by these frictions.

However, such a conventional method is to control the pressure generated during the compression action of the compressor 101 by the friction force between the seal ring 107 and the seat ring 105 according to the movement force of the carbon ring 106 and the friction force Since the refrigerant and the oil compressed in the compression chamber 103 by the leak is prevented from leaking along the compressor shaft 102, the number of parts to prevent the leakage and to act as a sealing operation has been increased, the number of parts Due to the increase of, the precision of these was significantly reduced, and there was a closed end where the actual sealing could not be made reliably. Since the sealing should be performed by the adhesion of the rings, the incidence of leakage due to their friction was high, resulting in the reliability of the sealing. There existed a problem, such as this large fall.

The present invention has been made in view of the above-mentioned conventional problems. The present invention provides an air conditioner installed in a vehicle and the like for cooling the room, wherein the refrigerant and oil are on an axis of a compressor for compressing the refrigerant according to the driving of the air conditioner. A sealing means is provided to prevent leakage of the sealing means, and the sealing means is provided with a seal having a double sealing part, and the pressure difference between the one chamber and the two chambers of the compressor is reduced by the seal having the double sealing part. To reduce, and to reduce the pressure load of the seal to provide a compressor shaft sealing device of the air conditioner to prevent leakage of refrigerant and oil, which will be described in detail below based on the accompanying drawings. .

1 is a cross-sectional view showing a conventional compressor shaft sealing configuration

2 is a cross-sectional view showing a compressor shaft sealing configuration of the present invention.

Explanation of symbols on the main parts of the drawing

1: compressor

2: compressor shaft

3: compression chamber

4: Bracket

5: filter

6,9: thread

7,10: sealing part

8,11: double sealing wing

12: pressure chamber

A piston for compressing the refrigerant is provided while reciprocating in the cylinder, and the compressor 1 is provided with a compressor shaft 2 for rotational movement for compression, and the compressor shaft 2 is provided with a compressor shaft. One end of the bracket 4, on which the compressor shaft 2 is installed, in installing a sealing means to prevent leakage of refrigerant and oil having a pressure compressed in the compression chamber 3 along the compressor shaft 2; A filter (5) for absorbing oil is installed on one side thereof, and a seal (6) (9) having a seal (7) (10) consisting of double sealing blades (8) (11) is provided on one surface thereof. The pressure chamber 12 which subtracts the pressure difference with the said compression chamber 3 between the chambers 6 and 9 is comprised so that it may be formed.

The present invention configured as described above is provided with a piston for compressing the refrigerant while reciprocating in the cylinder and the compressor (1) is provided with a compressor shaft (2) for rotational movement for compression, the compressor shaft (2) ) In the compression chamber (3) of the compressor (1) is provided with a sealing means to prevent the refrigerant and oil having a pressure leak along the compressor shaft (2), the compressor shaft (2) A seal (6) (9) having a filter (5) for absorbing oil at one end of the bracket (4) to be installed and a seal (7) (10) consisting of double sealing blades (8) (11) on one surface thereof. Is installed in duplicate so that the pressure chamber 12 for subtracting the pressure difference from the compression chamber 3 is formed between the chambers 6 and 9 so that the compression chamber is driven by the driving of the compressor 1. When pressure is generated in (3) and this compression pressure is transmitted to the chamber (9), the seal (9) and seal (6) A pressure difference is generated between the pressure chambers 12 formed therebetween, and the sealing portions 7 and 10 made up of the double sealing wings 8 and 11 of the respective chambers 6 and 9 are caused by the pressure difference. Are in close contact with the compressor shaft 2.

Therefore, the sealing function of the seals 6 and 9 is strengthened, and the refrigerant and oil having a pressure compressed in the compression chamber by the sealing action of the reinforced seals 6 and 9 are applied to the compressor shaft 2. Leakage is prevented, and since some oil leaked along the seals 6 and 9 is absorbed by the filter 5, leakage of the oil and the like is reliably prevented and Sealing is performed reliably.

The present invention as described above is to install a double sealing structure of a simple configuration as described above in the compressor shaft and prevent the leakage of the refrigerant and oil by the close action of the seal due to the pressure difference with the compression chamber in the pressure chamber formed between the seals Even if the pressure generated in the compression chamber is strong, the pressure chamber is primarily buffered so that the load on the seals can be reduced and the leakage of the seal can be greatly reduced as the load decreases. It is possible to improve the efficiency of the compressor by preventing oil or the like from leaking along the compressor shaft.

Claims (1)

A piston for compressing the refrigerant is provided while reciprocating in the cylinder, and the compressor 1 is provided with a compressor shaft 2 for rotational movement for compression, and the compressor shaft 2 is provided with a compressor shaft. In order to prevent the refrigerant and oil compressed by the compression chamber 3 from leaking along the compressor shaft 2, a sealing means is provided, and oil is provided at one end of the bracket 4 in which the compressor shaft 2 is installed. Filter (5) for absorbing water, and seals (6) (9) are doubled on one surface thereof, and the pressure difference with the compression chamber (3) is subtracted between the seals (6) and (9). In the structure in which the pressure chamber 12 to be formed is formed, A double seal blade (8) (11) is formed in the seal (6) (9), the compressor shaft sealing device of the air conditioner.