CN201110418Y

CN201110418Y - Electromagnetic valve for refrigeration system

Info

Publication number: CN201110418Y
Application number: CNU200720070602XU
Authority: CN
Inventors: 王勇
Original assignee: FENGHUA WUZHOU REFRIGERATION FITTINGS Co Ltd
Current assignee: FENGHUA WUZHOU REFRIGERATION FITTINGS Co Ltd
Priority date: 2007-06-01
Filing date: 2007-06-01
Publication date: 2008-09-03
Anticipated expiration: 2017-06-01

Abstract

The utility model discloses an electromagnetic valve of a freezing system without high-temperature welding such as high-frequency or argon arc welding and the like when preparing, using epoxy resin package to replace welding, which comprises an armature iron, a copper tube, a valve core, a valve body, an electromagnet ring, a frame, a sleeve, a case and an epoxy resin package layer. The utility model is characterized in that the electromagnetic valve which comprises the armature iron, the copper tube, the valve core, the valve body, the electromagnet ring and the frame is placed in a case, the valve body is arranged among the frames and two ends of the valve body are connected with the armature iron, the joint end of the armature iron and the valve body is provided with the sleeve, the armature iron center is provided with a copper and is connected with two sides of the valve core, the frame is arranged on the exterior of the armature iron, the valve body and the sleeve and is winded by the electromagnet ring, the epoxy resin is injected in the gap of the case for forming the package layer and fixing the copper tube, the armature iron and the sleeve and sealing the gap among the copper tube, the armature iron and the sleeve. The produce preparation technique is simplified and the preparation procedure needn't high temperature and environment pollution, which doesn't influence the material quality and is high in product ratio, further the epoxy resin can infiltrate tiny gap, thereby the seal effect is better.

Description

A kind of refrigeration system solenoid valve

Technical field

The utility model relates to the electric elements in the chiller plants such as refrigerator-freezer, refrigerator, air conditioner, the concrete a kind of refrigeration system solenoid valve of system refrigeration system inner refrigerant circuit of accusing.

Background technique

The solenoid valve of control refrigerant cycle in the refrigeration system of existing refrigerator, refrigerator-freezer, air conditioner, during fabrication in order to prevent the leakage of its refrigeration agent, between circulation copper pipe and valve body and armature, generally adopt the higher silver wire of silver content, carry out seal welding through high frequency or argon arc welding.Yet the temperature of high frequency welding need reach more than 800 ℃, so high temperature can be annealed to the armature and the copper tube of magnetically soft alloy material, thereby the soft magnet performance that may make armature changes or impels the copper pipe sclerosis, serious meeting makes the copper pipe surface layer produce oxidation, need carry out pickling processes again, this can produce pollution to environment.When argon arc welding is welded, need constantly cool off simultaneously, not be melted with the rubber parts that prevents valve inner with cold water.So constantly colding and heat succeed each other repeatedly can cause weld cracking, thereby valve body is scrapped.So manufacture a product with said welding method, not only complex process, and yield rate is very low, thereby cost of production is high, and process links is many simultaneously, and operation easier is big.

The model utility content

The purpose of this utility model is: for overcoming the existing refrigeration system technical deficiency of solenoid valve manufacture process, improve the yield rate of product, provide a kind of simple in structure easy to manufacture, the refrigeration system solenoid valve that cost of production is low.

The technological scheme of the utility model technical solution problem is: replace welding with epoxy encapsulation.The utility model comprises armature, copper pipe, spool, valve body, electromagnetic coil and skeleton, sleeve pipe, housing and epoxy encapsulation layer, it is characterized in that and to be positioned over by the solenoid valve that armature, copper pipe, spool, valve body, electromagnetic coil and skeleton are formed in the housing, described valve body is arranged in the middle of the skeleton, two ends of valve body is connected with armature, armature and the valve body end that joins is provided with sleeve pipe, armature central authorities have penetrated copper pipe, the inner end of copper pipe is connected with the spool both sides, outside armature, valve body and sleeve pipe, be provided with the skeleton of coiling, be wound with electromagnetic coil on the skeleton.Epoxy resin has been injected in gap in housing, forms encapsulated layer behind the described epoxy resin cure, copper pipe, armature and sleeve pipe is fixed and with the clearance seal between them.

Described valve body is made by at least one permanent magnet, in establish spool, peripheral hardware electromagnetic coil and skeleton.

The utility model is owing to adopt epoxy resin cure to substitute high frequency or argon arc welding welding, and its preparation process is simplified, and working process does not have high temperature, non-environmental-pollution, material to valve body does not have influence, the yield rate height, and epoxy resin can infiltrate small gap, so its sealing effect is better.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Each title and mark among the figure: 1. copper pipe, 2. encapsulated layer, 3. armature, 4. skeleton, 5. valve body, 6. electromagnetic coil, 7. housing, 8. armature, 9. sleeve pipe, 10. spool.

Embodiment

With the solenoid valve of alternative high frequency of epoxy resin cure or argon arc welding welding, can be the bistable electromagnetic valve in the refrigeration system, also can be monostable solenoid valve or rotating electromagnetic valve, present embodiment is a kind of monostable solenoid valve.Referring to Fig. 1: be respectively arranged with armature 3 and armature 8 at sleeve pipe 9 two ends, the spool 10 that can move back and forth between the armature, penetrate the copper pipe 1 of ventilation, liquid on armature 3 and the armature 8 respectively, be provided with permanent magnet in sleeve pipe 9 grooves, be inserted in skeleton 4 by the above valve body of forming 5, skeleton 4 is around with electromagnetic coil 6, and put into housing 7 together, injection ring epoxy resins in the housing 7, whole electromagnetic coil 6 of submergence and valve body 5, an exposed portions serve copper pipe 1.Treat to form encapsulated layer 2 behind the epoxy resin cure, with armature 3 and armature 8, the clearance seal between copper pipe 1 and the sleeve pipe 9 plays the generation that stops refrigeration agent to leak outside, the effect of protection electromagnetic coil 6.Elder generation is with copper pipe 1 when making assembling, armature 3 and armature 8, sleeve pipe 9 location, then with spool 10, valve body 5, the solenoid valve that electromagnetic coil 6 and skeleton 4 are formed is positioned in the housing 7, valve body 5 is arranged at skeleton 4 centres, the two ends of valve body 5 are connected with armature 8 with armature 3, and join with the valve body 5 that has at least a permanent magnet to make, central authorities penetrate copper pipe 1, the inner end of copper pipe 1 is connected with spool 10 both sides, gap injection ring epoxy resins in housing 7, form encapsulated layer 2, with copper pipe 1, armature 3 and armature 8, sleeve pipe 9 is fixed and with its clearance seal, can be made the finished product solenoid valve after waiting to solidify.

This product is when installing and using, the feed liquor and the fluid two ends of copper pipe 1 are linked into respectively in the pipeline of refrigeration system, the two poles of the earth of electromagnetic coil 6 lead-in wire is connected with control circuit, the executive circuit of being made up of control unit drives spool 10, thereby the break-make of control refrigerant cycle process makes refrigerant compression function proper functioning.

Claims

1. refrigeration system solenoid valve, comprise armature (3) and armature (8), copper pipe (1), spool (10), valve body (5), electromagnetic coil (6) and skeleton (4), sleeve pipe (9), housing (7) and epoxy encapsulation layer (2), it is characterized in that will be by armature (3) and armature (8), copper pipe (1), spool (10), valve body (5), the solenoid valve that electromagnetic coil (6) and skeleton (4) are formed is positioned in the housing (7), described valve body (5) is arranged in the middle of the skeleton (4), the two ends of valve body (5) are connected with armature (8) with armature (3), both connecting parts are provided with sleeve pipe (9), armature (3) and armature (8) central authorities have penetrated copper pipe (1), the inner end of copper pipe (1) is connected with spool (10) both sides, at armature (3) and armature (8), valve body (5) peripheral hardware has coil rack (4), be around with electromagnetic coil (6), gap injection ring epoxy resins in housing (7), form encapsulated layer (2) behind the described epoxy resin cure, with copper pipe (1), armature (3) and armature (8) and sleeve pipe (9) are fixing and with its clearance seal.

2. refrigeration system solenoid valve as claimed in claim 1, it is characterized in that in the described valve body (5) it being the spool of making by at least one permanent magnet (10), peripheral hardware electromagnetic coil (6) and skeleton (4), the two poles of the earth lighting outlet of described electromagnetic coil (6) is connected with control circuit.