Directly-acting rotary electronic expansion valve

An electronic expansion valve, rotary technology, applied in fluid circulation arrangements, refrigeration components, refrigerators, etc., can solve the problems of unsatisfactory refrigerant flow regulation, no precise regulation, poor dynamic characteristics, etc., which is conducive to large-scale promotion, The effect of fast dynamic response and low cost

Inactive Publication Date: 2002-05-08
周延周
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  • Abstract
  • Description
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Problems solved by technology

The second structure makes the refrigerant flow adjustment more precise through the gear mechanism; however, due to the manufacturing and installation errors of the gear-thread mechanism, the actual refrigerant flow adjustment effect is not ideal; and its transmission chain is too long, and its dynamic characteristics are poor; In the inverter air conditioner, the electronic expansion valve is mainly used for coarse adjustment of the refrigerant flow, and there is no need for fine adjustment, so this structure is not widely used

Method used

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  • Directly-acting rotary electronic expansion valve

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Embodiment Construction

[0020] Such as figure 1 As shown, the direct-acting rotary electronic expansion valve of the present invention includes a permanent magnet stepper motor composed of a permanent magnet plastic magnetic rotor 5 and a stator coil 6, the stator coil and the rotor are separated by a thin-walled sealing cover 4, and the rotor There are refrigerant inflow and outflow bases 9 and 1 on both sides of the shaft end. The refrigerant inflow and outflow bases are integrated with the sealing cover to form the valve body of the electronic expansion valve. Refrigerant inflow and outflow bases are provided with refrigerant inflow orifices 7 at appropriate positions. 1. The refrigerant flows out of the orifice 3, and the two end faces of the rotor are end cams, and the end faces of each cam are opposite to their respective orifices.

[0021] The permanent magnet end face cam rotor 5 is made of permanent magnet plastic mixed magnetic powder, and its outer circle is still circular and has 24 polar...

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Abstract

The directly-acting rotary electronic expansion valve for refrigerant flow rate regulation in household air conditioner includes one permanent magnetic stepped motor comprising a permanent magnetic rotor and a stator winding separated by a sealing hood. At two ends of the rotor shaft, there are refrigerant inlet and outlet bases, which have refrigerant inlet and outlet throttle holes and constitute the valve body of the electronic expansion valve together with the sealing hood. There are cams in the two ends of rotor opposite to separated throttle holes. The stepped motor is driven by outer pulse and controlling the turned angle of the cams and thus the distance between the cam and the throttle hole can regulate the refrigerant flow rate.

Description

technical field [0001] The invention relates to an electronic expansion valve used for adjusting the refrigerant flow rate of household air conditioners, in particular to a direct-acting rotary electronic expansion valve. Background technique [0002] At present, on the basis of the traditional air conditioner, the new inverter air conditioner is more and more favored by consumers. Its remarkable advantage is that it can adjust the refrigerant flow faster and more greatly according to the actual needs, thus realizing the precise control of the room temperature. , and is comfortable and energy-saving. In the inverter air conditioner, there is a key component for automatic regulation of refrigerant flow called electronic expansion valve. [0003] As of September 6, 2001, in the world (including China), there are a total of 52 invention patents related to electronic expansion valves and their control methods. Among them, the representative inventions related to the electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/04
Inventor 周延周
Owner 周延周
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