CN2743635Y

CN2743635Y - New type straight moving electro magnetic valve

Info

Publication number: CN2743635Y
Application number: CN 200420090411
Authority: CN
Inventors: 陈雨忠; 王强; 李周洋
Original assignee: Zhejiang Sanhua Co Ltd
Current assignee: Zhejiang Sanhua Co Ltd
Priority date: 2004-09-21
Filing date: 2004-09-21
Publication date: 2005-11-30
Anticipated expiration: 2014-09-21

Abstract

The utility model relates to a straight moving electromagnetic valve for refrigerating system. The present electromagnetic valve is in a connecting pipe type, namely the connecting pipe is needed to weld a valve body on a refrigerating circuit when the valve body is installed, and therefore, the valve body is difficult to install and disassemble. The utility model comprises a casing, a coil and a valve seat which are respectively connected with the upper and lower part of the casing, an end socket plugging on the upper end of the casing, and a core iron positioning in the casing. The utility model is characterized in that the bottom of the valve seat is provided with at least one axial coolant entrance, and the valve seat below the core iron is provided with a coolant exit. The lower end of the core iron is provided with a sealing plug matched with the coolant exit, and a valve opening is formed between the upper parts of the coolant entrance and the coolant exit and the core iron. The utility model is in no connecting tube type, and installation, disassembly and maintenance are simpler and more convenient.

Description

Novel straight moving electromagnetic valve

Technical field

The utility model relates to a kind of direct action solenoid valve that is used for refrigeration systems such as air-conditioning, freezing, refrigeration.

Background technique

Along with applying of refrigeration systems such as air-conditioning, freezing, refrigeration, solenoid valve is as the critical elements of electronic control, and its application is also increasingly extensive, also more and more requires convenient succinct to aspects such as the installation in using, maintenances.At present, be widely used in the refrigeration system as the solenoid valve of controlling automatically, (parts such as coil have been omitted among the figure) as shown in Figure 1, 2, it comprises sleeve pipe, is connected to the coil and the valve seat of sleeve pipe upper and lower end, and shutoff is at the end socket and the core iron that is positioned at sleeve pipe of sleeve pipe upper end, have entrance sleeve and discharge connection on the described valve seat, between inlet tube and outer pipe, have valve port, and in the core iron lower end affixed steel ball that cooperates with valve port or sealing plug; Along with the energising or the outage of coil, core iron moves up and down in sleeve pipe, firm ball or sealing plug are left or the shutoff valve port so control valve port switching; The drawback of this type of solenoid valve maximum is that valve body all needs with taking over its welding to be linked in the refrigerating circuit when mounted, install, dismounting is cumbersome, and valve body needs protection in the welding, and in case this protection was lost efficacy, valve body tends to produce and leaks.In addition, it is also cumbersome safeguard, often needs to destroy valve body or refrigerating circuit is finished, and has shortened the working life of solenoid valve.

The model utility content

Technical problem to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, and a kind of solenoid valve that does not have adapter is provided, and to avoid the generation of valve body leakage phenomenon, makes its installation, dismounting and maintenance more simple, convenient.

The technical solution of the utility model is as follows: novel straight moving electromagnetic valve, comprise sleeve pipe, be connected to the coil of sleeve pipe upper and lower part and valve seat, shutoff is at the end socket of sleeve pipe upper end and the core iron that is positioned at sleeve pipe, the bottom that it is characterized in that described valve seat has at least one axial refrigerant import, the valve seat place that is positioned at the core iron below has a refrigerant exit, there is a sealing plug that cooperates with refrigerant exit the lower end of core iron, forms a valve port between the top of refrigerant inlet/outlet and core iron.The utility model is no adapter type, can reduce a lot of special manufacturing procedure of present solenoid valve, has gone the welding of two places adapter on valve seat especially less, and valve body has been played effective protection, has avoided the generation of valve body leakage phenomenon; It is more simple, convenient that installation, dismounting and maintenance become.

Described novel straight moving electromagnetic valve has a damping spring between sealing plug and core iron, make the sealing of sealing plug sensitive more.

Further technological scheme of the present utility model is: the outer surface of valve seat is provided with screw thread, and screw thread is used for valve seat is connected in refrigerating circuit, changes existing adapter welding, installs, convenient disassembly is quick.

Described novel straight moving electromagnetic valve, the valve seat place that is positioned at the screw thread top forms at least one step, so only need just valve body can be tightened on the valve base with spanner.

That the lower end of described valve seat has is interior, in, outer three annular grooves, described refrigerant import is located in the further groove, inner groovy the refrigerant import and and the outlet between, outer groove is positioned at the outside of refrigerant import, inner groovy is built-in with a refrigerant cage ring, outer groove is built-in with a valve seat insert, and the refrigerant cage ring is used for import below and outlet below are separated.

The utility model changes existing adapter type into no adapter type, has following beneficial effect: 1) in the installation process valve body has been played effective protection, avoided the generation of valve body leakage phenomenon; 2) it is more simple, convenient that installation, dismounting and maintenance become, the working life of having improved solenoid valve.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings

Fig. 1 is the structural representation of existing a kind of solenoid valve.

Fig. 2 is the structural representation of existing another kind of solenoid valve.

Fig. 3 is a structural representation of the present utility model.

Embodiment

As shown in Figure 3, novel straight moving electromagnetic valve, comprise sleeve pipe 5, be connected to the coil 1 of sleeve pipe upper and lower part and valve seat 9, shutoff at the end socket 2 of sleeve pipe upper end, be positioned at the core iron 4 of sleeve pipe and be positioned at the returning spring 3 of core iron, the bottom of valve seat has two axial refrigerant imports 12, the valve seat place that is positioned at the core iron below has a refrigerant exit 10, there is a sealing plug 7 that cooperates with refrigerant exit 10 lower end of

core iron

4,4 of sealing plug 7 and core irons have a

damping spring

6, and 4 of sealing plug 7 bottoms and core irons have a sealing gasket 8.Form a valve port between the top of refrigerant inlet/outlet and core iron, when closed electromagnetic valve (the sealing plug shutoff is on refrigerant exit), valve port does not communicate with refrigerant exit; When solenoid valve is opened (sealing plug breaks away from refrigerant exit), valve port communicates with refrigerant exit.Screw thread 14 is arranged on the outer surface of valve seat, and the valve seat place that is positioned at screw thread 14 tops forms two steps 11.That the lower end of valve seat has is interior, in, outer three annular grooves, refrigerant import 12 is arranged in the further groove 13, inner groovy the refrigerant import and and the outlet between, outer groove is positioned at the outside of refrigerant import, inner groovy is built-in with refrigerant cage ring 16, and outer groove is built-in with valve seat insert 15.

Claims

1, novel straight moving electromagnetic valve, comprise sleeve pipe (5), be connected to the coil (1) of sleeve pipe upper and lower part and valve seat (9), shutoff is at the end socket (2) of sleeve pipe upper end and the core iron (4) that is positioned at sleeve pipe, the bottom that it is characterized in that described valve seat (9) has at least one axial refrigerant import (12), the valve seat place that is positioned at the core iron below has a refrigerant exit (10), there is a sealing plug (7) that cooperates with refrigerant exit (12) lower end of core iron (4), forms a valve port between the top of refrigerant inlet/outlet and core iron (4).

2, novel straight moving electromagnetic valve according to claim 1 is characterized in that between described sealing plug (7) and core iron (4) damping spring (6) being arranged.

3, novel straight moving electromagnetic valve according to claim 1 and 2 is characterized in that the outer surface of described valve seat (9) is provided with screw thread (14).

4, novel straight moving electromagnetic valve according to claim 3 is characterized in that the valve seat place that is positioned at screw thread (14) top forms at least one step (11).

5, novel straight moving electromagnetic valve according to claim 1, that the lower end that it is characterized in that described valve seat has is interior, in, outer three annular grooves, described refrigerant import (12) is located in the further groove (13), inner groovy be positioned at refrigerant import (12) and and the outlet (10) between, outer groove is positioned at the outside of refrigerant import, inner groovy is built-in with a refrigerant cage ring (16), and outer groove is built-in with a valve seat insert (15).