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Displacement control valve for variable displacement compressor

A technology for controlling valves and compressors, which is applied in the field of displacement control valves of variable displacement compressors, and can solve problems such as inability to release crankcase pressure

Active Publication Date: 2015-01-21
DOOWON TECHN COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, during the initial operation of the compressor, when the pressure increases due to the evaporation of liquid refrigerant or abnormal operation of the compressor, the displacement control valve according to the prior art cannot relieve the pressure Pc of the crankcase

Method used

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  • Displacement control valve for variable displacement compressor
  • Displacement control valve for variable displacement compressor
  • Displacement control valve for variable displacement compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0073] like image 3 and Figure 4 As shown, the displacement control valve 100 according to the first exemplary embodiment of the present invention comprises: a valve housing 110 in which several connection holes are formed; an electronic solenoid 130; The valve body 120.

[0074] In addition, a first guide hole 117 for guiding the movement of the valve body 120 is formed in the valve sleeve 110 .

[0075] Specifically, when electric current is applied to the electronic solenoid 130 , the valve body 120 reciprocates to open and close the first guide hole 117 formed in the valve housing 110 .

[0076] A crankcase connection hole 112 and a discharge chamber connection hole 113 are formed in the valve housing 110 to which the pressure Pc of the crankcase 86 and the pressure Pd of the discharge chamber 24 are applied, respectively. The exhaust chamber connection hole 113 and the crankcase connection hole 112 are connected to each other through the first guide hole 117 .

[00...

Embodiment approach 2

[0108] like Figure 5 and Image 6 As shown, the displacement control valve 100 according to the second exemplary embodiment of the present invention comprises: a valve sleeve 110 in which several connection holes are formed; an electronic solenoid 130; The valve body 120.

[0109] In addition, a first guide hole 117 for guiding the movement of the valve body 120 is formed in the valve sleeve 110 .

[0110] Specifically, when electric current is applied to the electronic solenoid 130 , the valve body 120 reciprocates to open and close the first guide hole 117 formed in the valve housing 110 .

[0111] A crankcase connection hole 112 and a discharge chamber connection hole 113 to which the pressure Pc of the crankcase 86 and the pressure Pd of the discharge chamber 24 are respectively applied are formed on the valve sleeve 110 . The exhaust chamber connection hole 113 and the crankcase connection hole 112 are connected to each other through the first guide hole 117 .

[011...

Embodiment approach 3

[0144] like Figure 7 to Figure 10 As shown, the displacement control valve 100 according to the third exemplary embodiment of the present invention comprises: a valve housing 110 in which several connection holes are formed; an electronic solenoid 130; The valve body 120.

[0145] In addition, a first guide hole 117 for guiding the movement of the valve body 120 is formed in the valve sleeve 110 .

[0146] Specifically, when electric current is applied to the electronic solenoid 130 , the valve body 120 reciprocates to open and close the first guide hole 117 formed in the valve housing 110 .

[0147] A crankcase connection hole 112 and a discharge chamber connection hole 113 are formed in the valve housing 110 to which the pressure Pc of the crankcase 86 and the pressure Pd of the discharge chamber 24 are applied, respectively. The exhaust chamber connection hole 113 and the crankcase connection hole 112 are connected to each other through the first guide hole 117 .

[014...

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PUM

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Abstract

Disclosed is a displacement control valve for a variable displacement compressor. The displacement control valve comprises: a valve housing having a crank chamber connection hole, a discharge chamber connection hole and a suction chamber connection hole formed therein, which respectively receive the pressure from the compressor crank chamber, discharge chamber, and suction chamber, and further having a first guide hole penetratingly formed therein, which is positioned between the discharge chamber connection hole and the crank chamber connection hole; a valve body which, whilst moving reciprocally, opens and closes the opening of the first guide hole; and an electronic solenoid which causes the reciprocal movement of the valve by applying electric current; a sleeve which connects the electronic solenoid and the valve body; and an air extraction valve which controls the connection between the crank chamber and the suction chamber by movement of the sleeve. Thus, when the pressure in the compressor crank chamber increases rapidly, the pressure can be quickly released via the suction chamber due to the air extraction valve.

Description

technical field [0001] The present invention relates to a displacement control valve for a variable displacement compressor, and more particularly, to a displacement control valve for a variable displacement compressor that can quickly release the pressure in the crankcase of the compressor when the pressure increases rapidly. Compressor displacement control valve. Background technique [0002] The compressor included in the cooling system of the vehicle air conditioner is directly connected to the engine through a belt, so the number of revolutions of the compressor cannot be controlled. [0003] Therefore, recently, a variable displacement compressor in which a refrigerant discharge amount which is not controlled by the number of revolutions of an engine can be changed to obtain a cooling capacity has been widely used. [0004] The invention discloses various types of variable displacement compressors, such as swash plate type, rotary type, scroll type and the like. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B27/14F16K31/06F04B27/08F04B39/00F04B25/04
CPCF16K31/0634F04B2027/1854F04B2027/1813F04B27/1804F04B2027/1827
Inventor 李建祜李容柱郭勇锡
Owner DOOWON TECHN COLLEGE