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Electromagnetic valve

A technology of solenoid valves and solenoid coils, applied in valve details, valve devices, valve operation/release devices, etc., can solve the problems of not taking into account, reducing the sound of refrigerant flow, etc., and achieve the effect of ensuring strength and suppressing noise

Active Publication Date: 2013-12-18
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned existing solenoid valve does not take into account that the metal mesh woven by metal wires is sintered to form a multi-layer porous member and the porous member formed by a metal wire into a dense mesh to make the refrigerant in the refrigerant Bubble subdivision, and further reduce the sound of refrigerant flow

Method used

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Embodiment Construction

[0034] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0035] figure 1 , 2 It is a sectional view of the first embodiment of the solenoid valve of the present invention; Figure 3A , 3B , 3C is figure 1 An explanatory diagram of the multilayer structure formed by sintering the porous part of the main part; Figure 4 for figure 1 The state diagram when the solenoid valve is closed.

[0036] figure 1In the solenoid valve 1, a tubular casing part 4 is erected on the valve body 2 with a valve chamber 21, for example, by welding, and includes an electromagnetic coil 3 arranged on the outer periphery of the casing part 4, fixed in the casing part 4 The cylindrical attractor 10, the core iron 6 disposed inside the sleeve part 4 facing the attractor 10, the cylindrical valve connected to the core iron 6 and movable in the axial direction of the sleeve part 4 The rod 9, the inflow side channel 22 and the outflow side chan...

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Abstract

The invention relates to an electromagnetic valve. A valve rod can be in contact with or be separated from a valve seat formed on a valve body through an electromagnetic coil; the valve body comprises an inflow-side channel and an outflow-side channel, a first porous part and a second porous part, which form a throttling passage by clamping, are sequentially arranged in the valve rod, the first porous part and a communicating hole for communicating the interior of the valve rod with the inflow-side channel are arranged in opposite directions, the first porous part is of a multi-layer structure of a sintered net, which is formed by sintering a metal net formed by weaving metal wires, the second porous part is of a structure with sparse-dense meshes, which is formed by the metal wires, a circular ring-like groove of the valve rod is communicated with the communicating hole for forming a continuing space, and the circular ring-like groove and the first porous part can be formed in the valve rod in the opposite directions. The electromagnetic valve provided by the invention can inhibit the flowing sound of a cooling medium, exactly perform sectionalization on bubbles in the cooling medium and maintain the strength for a long time, and further has the advantages of long service life, good productivity and low cost.

Description

technical field [0001] The invention relates to a solenoid valve for an air conditioner. Background technique [0002] Air conditioners generally switch between cooling and heating by reversing the flow of refrigerant to the outdoor heat exchanger and the indoor heat exchanger. [0003] In order to perform dehumidification operation in the refrigeration cycle system of an air conditioner, the indoor heat exchanger is divided into two types for cooling and reheating, and the dehumidification operation is performed with an expander installed between them. [0004] When the solenoid valve is used as an expander to throttling, the refrigerant will generate flow noise along with its throttling action, and when the refrigerant generates flow sound, noise will be formed. [0005] In order to prevent the generation of refrigerant flow sound, for example, refer to Patent Document 1 of JP-A-2003-156269. In this prior art, a first member for subdividing air bubbles is provided on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/06F16K47/02
Inventor 严卫林
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD