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Compressor capacity control valve and control method and application thereof

A technology for compressor capacity and control valves, which is applied in pump control, mechanical equipment, machines/engines, etc., can solve problems such as the inability of four-way valves, and achieve the effects of low production cost, high reliability, and simple structure

Active Publication Date: 2009-08-26
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if it is necessary to switch the pressure switching hole A to the high pressure side, and the pressure switching hole B is also the high pressure side, or the pressure switching hole A is the low pressure side, and the pressure switching hole B is also the low pressure side, or in the aforementioned state, When it is necessary to switch to the pressure switching hole A as the high pressure side and the pressure switching hole B as the low pressure side, the four-way valve is not competent

Method used

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  • Compressor capacity control valve and control method and application thereof
  • Compressor capacity control valve and control method and application thereof
  • Compressor capacity control valve and control method and application thereof

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] In the figure: 1 is the housing, 2 is the valve seat, 3 is the slider, 4 is the crankshaft, 5 is the stepper motor, 6 is the motor rotor, 7 is the coil, 11 is the low pressure cavity, 12 is the high pressure cavity, 13 14 is a one-way valve, 15 is a coil spring, 16 is a retaining ring, 21 is a first pressure switching hole, 22 is a second pressure switching hole, 23 is a first connecting pipe, 24 is a second connecting pipe, 25 is the third connecting pipe, 26 is the fourth connecting pipe, 31 is the balance hole, 32 is the pilot valve, 33 is the arm, 34 is the limit plate, 35 is the stop pin, 36 is the arm block, 41 is the leaf spring, 42 is a disc, 43 is a square hole, 44 is a lifting hook, 45 is a disc stopper, 46 is a slider stopper, 47 is a fixed stopper, 51 is a tapered protrusion, and 52 is a horizontal hole.

[0045] see Figure 1-Figur...

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Abstract

A capacity control valve for a compressor, comprising a valve seat arranged in a shell, a rotary slider arranged on the valve seat and its driving device, three or more connecting pipes are arranged on the valve seat, and each connecting pipe leads to the valve respectively. There are three or more through-holes inside the seat, one of which is a low-pressure hole in the low-pressure side circuit of the inner cavity of the valve seat, and the circuit is provided with a low-pressure circuit switch device for controlling the switch of the circuit, and the other two The first pressure switch hole and the second pressure switch hole are arranged on the valve seat. The balance hole communicates with the inside of the housing and the inner cavity of the slider. The circuit where the balance hole is located is provided with a balance hole switch device. In the present invention, the pressure of the two connecting pipes can be freely switched back and forth between high pressure and low pressure through the rotating slider, and can be switched back and forth among four modes at most; the mode switching can be performed by rotating the slider with a small torque, and its reliability is high , Low production cost.

Description

technical field [0001] The invention relates to a capacity control valve of a compressor and its control method and application, in particular to a capacity control valve of a rotary compressor and its control method and application. Background technique [0002] Common switching valves used to switch the direction of fluid flow generally use two-way valves, three-way valves or four-way valves, etc. Among them, the four-way valve with the most functions has the function of reversing the flow direction of the fluid connected to two pressure switching holes. For example, when the pressure switching hole A is on the high pressure side, the pressure switching hole B is on the low pressure side. By switching the four-way valve, the pressure switching hole A can be placed on the low pressure side. At this time, the pressure switching hole B is on the high pressure side. However, if it is necessary to switch the pressure switching hole A to the high pressure side, and the pressure ...

Claims

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Application Information

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IPC IPC(8): F04B49/22F04C28/00
Inventor 高强小津政雄李华明吴多更
Owner GUANGDONG MEIZHI COMPRESSOR
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