Bi-stable pulse electromagnetic valve and refrigerator

A pulsed solenoid valve, bistable technology, applied in household refrigerators, valve details, valve devices, etc., can solve problems such as unreliability and wrong commutation core iron action, and achieve the effect of improving reliability

Inactive Publication Date: 2010-09-01
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0004] When the bistable pulse solenoid valve with the above structure is subjected to lightning strikes or external high-voltage pulse interference during use, a transient electromagnetic pulse magnetic field will be generated in the excitation coil of the solenoid valve, which will cause the core iron in the valve body to move and cause wrong commutation or Vibration noise caused by unreliable action of core iron

Method used

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  • Bi-stable pulse electromagnetic valve and refrigerator
  • Bi-stable pulse electromagnetic valve and refrigerator
  • Bi-stable pulse electromagnetic valve and refrigerator

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the solution, further detailed description will be given below in conjunction with the accompanying drawings and implementation manners.

[0033] The bistable pulse solenoid valve mainly includes an excitation coil 1 and valve body components. The excitation coil 1 is set and fixed on the outer circumference of the valve body. The excitation coil and the valve body work together to realize the control of the refrigerant circulation path in the refrigeration system by the solenoid valve. The specific working principle of the solenoid valve has been described in detail in the background technology. introduction and will not be repeated here.

[0034] image 3 It is the first embodiment of the bistable pulse solenoid valve of the present invention, specifically the schematic diagram of the circuit structure of the excitation coil. This schematic diagram only shows the parts related to the present invention, ...

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Abstract

The invention discloses a bi-stable pulse electromagnetic valve, which is used for controlling a circulating path of a refrigerant in a refrigerating system and comprises a magnet exciting coil and a valve body component. The magnet exciting coil of the prior art comprises a coil winding, a thermistor and a current connecting insert. When the electromagnetic valve of the prior art is struck by lightning and disturbed by external high-voltage pulse during use, the magnet exciting coil of the electromagnetic valve produces instantaneous electromagnetic pulse magnetic fields so that error reversion produced by a core iron in the valve body component or vibration noise produced by unreliable core iron motion seriously affects the using reliability of the electromagnetic valve. The magnet exciting coil is connected in parallel with a voltage dependent resistor so as to radically solve the problem that the electromagnetic valve produces the error reversion or the vibration noise when the electromagnetic valve is struck by lightning and disturbed by the external high-voltage pulse and ensure the reliability of a product in the system.

Description

technical field [0001] The invention is applied to a solenoid valve for controlling the flow path of refrigerant in a refrigeration system, such as a bistable pulse solenoid valve used in a refrigerator to control the flow path of a refrigerant medium. Background technique [0002] The utility model relates to a bistable pulse solenoid valve used for controlling refrigerant circulation path in a refrigeration system, which includes an exciting coil and a valve body part. The structure and working principle of a bistable pulse solenoid valve for refrigerators are described in detail below: [0003] The valve body parts include a large casing made of a thin-walled non-magnetic material and valve seats on both sides made of a magnetically conductive material. Inside the large casing there is another thin-walled tube made of the same The shaft is equipped with a small sleeve, and the valve core assembly can move back and forth in the small sleeve. A pair of permanent magnets wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F25D11/00
Inventor 杨国灿石超梁
Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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