Control valve of variable capacitance compressor

A compressor and variable-capacity technology, which is used in liquid variable-capacity machinery, variable-capacity pump components, and pump control, and can solve problems such as the inability to control the speed

Inactive Publication Date: 2004-05-19
TGK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The compressor used in the refrigeration cycle of the car air conditioner is driven by the engine, and the speed of the engine changes according to the motion state of the car, so the speed cannot be controlled

Method used

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  • Control valve of variable capacitance compressor
  • Control valve of variable capacitance compressor
  • Control valve of variable capacitance compressor

Examples

Experimental program
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Embodiment Construction

[0025] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] figure 1 It is a central longitudinal cross-sectional view of the variable displacement compressor control valve structure of the first embodiment of the present invention.

[0027] The control valve of the variable displacement compressor includes a valve section located at the upper position in the figure. In the valve part, the opening at the top of the body 11 forms a port 12 communicating with the discharge chamber of the variable displacement compressor and subjected to the discharge pressure Pd, and the filter 13 is arranged on the port 12 . The port 12, which bears the discharge pressure Pd, communicates with the inside of the port 14, which communicates with the crank chamber of the variable displacement compressor and is formed in the body 11 so as to export the control pressure Pc into the crank chamber. The valve seat 15 serves as the...

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PUM

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Abstract

The object of the present invention is to provide a control valve for a variable displacement compressor, which is capable of controlling the variable displacement compressor to the minimum capacity without using an electromagnetic clutch, and can be constructed without accommodating a solenoid in a pressure chamber. A plunger of a solenoid is formed by a first plunger and a second plunger, and a diaphragm is disposed between them, for sensing suction pressure Ps, such that the first plunger controls a valve element via a shaft, with component elements of the solenoid except for the first plunger being disposed on a side of the diaphragm where the atmospheric pressure is received. Further, when the solenoid is not energized, the high suction pressure Ps urges the second plunger toward the core via the diaphragm, and a spring causes the first plunger to urge the valve element to the fully open position, which enables the variable displacement compressor to be controlled to the minimum capacity.

Description

technical field [0001] The present invention relates to a control valve of a variable displacement compressor, more specifically, the present invention relates to a control valve used for controlling the displacement of refrigerant in a variable displacement compressor of an automobile air conditioner. Background technique [0002] The compressor used in the refrigeration cycle of the car air conditioner is driven by the engine, and the engine speed changes according to the motion state of the car, so the speed cannot be controlled. For this reason, generally, a variable displacement compressor capable of changing the refrigerant displacement is employed in order to obtain sufficient cooling capacity without being limited by the rotational speed of the engine. [0003] In variable displacement compressors, generally, a swing plate provided in an airtight crank chamber so that its inclination angle is variable is driven by the rotation of a rotating shaft to perform a swingin...

Claims

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Application Information

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IPC IPC(8): F04B49/03F04B53/10
Inventor 广田久寿梶原盛光
Owner TGK
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