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Bistable magnetic valve

A solenoid valve, bistable technology, applied in the direction of valve details, multi-way valves, valve devices, etc., can solve the problems of casing leakage, small valve core holding force, and noisy permanent magnets, etc., to achieve low noise and high efficiency. Product quality, the effect of solving the valve leakage phenomenon

Inactive Publication Date: 2009-05-06
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved and the technical task proposed by the present invention are to overcome the disadvantages of the prior art, such as the high noise when the valve core and the casing collide and the relatively small holding force of the permanent magnet to the valve core, and provide a new The bistable solenoid valve, and on this basis, overcome the inconvenient assembly of the separate plastic spacer and the leakage of the casing.

Method used

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  • Bistable magnetic valve
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  • Bistable magnetic valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as Figure 2A , 2B , 2C, the bistable solenoid valve includes a valve body 1 and a coil not shown in the figure, wherein: the valve body 1 includes a sleeve 11, a single-hole valve seat 12, a double-hole valve seat 13, a valve core 14. Plastic sleeve 16 and two permanent magnets 15:

[0047] The casing 11 is directly punched into a straight tube shape, with the same outer diameter and inner diameter;

[0048] The single-hole valve seat 12 is processed by turning, drilling, etc., and its outer diameter is consistent with the inner diameter of the casing 11, and a first outlet 122 is arranged on it, and the inner end of the first outlet 122 protrudes from the single-hole valve seat 12 End face, the outer end of the first outlet 122 is connected to a first outlet pipe 121;

[0049] The double-hole valve seat 13 is processed by turning, drilling, etc., and is provided with an inlet 134, a second outlet 135, and a positioning step 131 that interferes with the end sur...

Embodiment 2

[0057] Such as Figure 3A , 3B , 3C, except that the spool 14 is different from the first embodiment, the rest of the structure is the same as the first embodiment: the spool 14 is a hollow magnetic conductor 141 with a cylindrical surface and is installed in the magnetic conductor 141. An assembly composed of two seals 142 and one elastic member 143, wherein the two seals 142 are located at both ends of the magnetizer 141, and the elastic member 143 is located between the two seals 142 to form an elastic support for the seal, so as to buffer the elasticity The impact when the parts contact the first outlet and the second outlet reduces noise and prevents damage to the seal.

Embodiment 3

[0059] Such as Figure 4A , 4B As shown, except that the plastic sleeve 16 and the valve core 14 are different from the first embodiment, the rest of the structure is the same as the first embodiment: the plastic sleeve 16 is not provided with a flow groove or a through hole as a passage, and at its two ends No recess is provided; the spool 14 is an assembly composed of a hollow magnetizer 141 and two seals 142 installed in the magnetizer 141 and an elastic member 143, wherein the two seals 142 are located at both ends of the magnetizer 141, The elastic member 143 is located between the two sealing members 142 to form an elastic support for the sealing member, so as to buffer the impact when the elastic member contacts the first outlet and the second outlet, reduce noise and prevent the seal from being damaged. On the outer wall of the magnetizer 141 A circulation groove 144 is opened on it as the channel 17 . When the spool 14 blocked the first outlet 122, the inlet pipe 13...

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Abstract

The invention provides a bistable electromagnetic valve, which belongs to fluid control elements. The prior art has the disadvantages that the prior art is high in the impact noise of valve cores and casing pipes and small in the holding force of permanent magnets to the valve cores. The valve has a valve body, wherein the valve body comprises a casing pipe, a single-hole valve seat with a first outlet, a double-hole valve seat with an inlet and a second outlet, a valve core and at least two permanent magnets; the single-hole valve seat and the double-hole valve seat are connected with two ends of the casing pipe respectively; and a channel is arranged between the first outlet and the inlet. The valve is characterized in that a plastic sleeve is arranged in the casing pipe; the permanent magnets are positioned on the plastic sleeve; and the valve core is arranged in the plastic sleeve and is used for blocking the first outlet or the second outlet. The valve has the advantage of low noise as the collision produced between the valve core in motion and the plastic sleeve is the collision between metal and plastics, and the permanent magnets are kept in a shorter distance with the valve core, so as to generate larger holding force.

Description

technical field [0001] The invention belongs to a fluid control element, in particular to a bistable solenoid valve which uses the electromagnetic field of an electromagnetic coil to control fluid flow. Background technique [0002] Existing bistable solenoid valves such as Figure 1A , 1B As shown, it has a valve body 1, which includes a sleeve 11, a single-hole valve seat 12 and a double-hole valve seat 13 respectively connected to both ends of the sleeve 11, a valve core 14 placed in the sleeve 11 and Two permanent magnets 15 positioned outside the casing 11 by two independent plastic spacers 18, however, the bistable solenoid valve with this structure has the following defects: [0003] 1. The valve core includes a magnetic conductor that induces the magnetic field of the permanent magnet and the electromagnetic field generated by the electromagnetic coil (the magnetic conductor is usually made of iron material, and the material is hard). When moving in the sleeve, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/044F16K31/06
Inventor 石超樑
Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD