CN201262268Y

CN201262268Y - Normally closed solenoid valve

Info

Publication number: CN201262268Y
Application number: CNU200820185463XU
Authority: CN
Inventors: 谢晓武; 徐燕芬
Original assignee: CHANGZHOU CHANGHENG RUTH APPLIANCE Co Ltd
Current assignee: CHANGZHOU CHANGHENG RUTH APPLIANCE Co Ltd
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2009-06-24
Anticipated expiration: 2018-09-05

Abstract

The utility model relates to the field of pipeline controlling equipment for cooling equipment, in particular to a normally closed electromagnetic valve. The electromagnetic valve has a valve base with a through hole and an electromagnetic coil; a valve pocket is arranged in the valve base; an air outlet pipe communicated with the through hole is arranged at one end of the valve, and an air inlet tube communicated with the valve pocket is arranged on one side of the valve; an iron core is arranged in the valve pocket; one end of the iron core is fixed onto the valve base, and a valve core is arranged at the other end of the iron core; the valve core is in the shape of a ball and the diameter of the valve core is larger than that of the flow-through hole; and the valve core is arranged at an end part of the through hole. The utility model has the advantages of good sealing effect, safety, and low probability of leakage.

Description

Normally closed solenoid valve

Technical field

The utility model relates to chiller plant pipeline control apparatus field, especially normally closed solenoid valve.

Background technique

Normally closed solenoid valve is of wide application, as: in the ice making machine, in the air-conditioning, in the hydraulic type pneumatic circuit of various device, for ice making machine and air conditioner, its a kind of parts that are absolutely necessary, working principle is when the air conditioner normal operation, the valve no electric circuit, this system pipeline is closed condition, when carrying out dehumidifier, the valve energising is opened, compressor inlet is directly flowed back in compressor 10%-20% exhaust, thereby but energy saving, the producer of domestic production normally closed solenoid valve is a lot of at present, what adopt mostly is plane adhesive and rubber seal, sealability is not good, is easy to generate leakage, and is dangerous.

Summary of the invention

The purpose of this utility model is the above-mentioned shortcoming at prior art, and normally closed solenoid valve safely and effectively is provided.

The technological scheme that realizes the utility model above-mentioned purpose is:

Normally closed solenoid valve, valve seat and electromagnetic coil with band through hole, has a valve pocket in the valve seat, valve seat one end is provided with outlet pipe and is connected with through hole, and a side is provided with suction tude and is connected with valve pocket, is provided with iron core in the valve pocket, one end of iron core is fixed on the valve seat, the other end is provided with spool, spool be spherical and diameter greater than the diameter of through hole, spool is in the end of through hole.

The described valve seat the other end is provided with chock plug, and described iron core is fixed on the chock plug by spring.

The utility model has the advantages that good sealing effect, safety is difficult for leaking.

Description of drawings

Fig. 1 is the utility model structural representation;

Among the figure, 1, valve seat, 2, valve pocket, 3, outlet pipe, 4, suction tude, 5, iron core, 6, spool, 7, through hole, 8, chock plug, 9, spring, 10, electromagnetic coil.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model.

As shown in the figure, normally closed solenoid valve, have a valve seat 1 and

electromagnetic coil

10,1 li through hole 7 of processing of valve seat and a valve pocket 2, valve seat 1 bottom welding outlet pipe 3 is connected with through hole 7, one face down bonding is connected to suction tude 4 and is connected with valve pocket 2, a chock plug 8 sealing valve pockets 2 are installed in the upper end of valve seat 1, electromagnetic coil 10 is fixed on the chock plug 8 by screw, an iron core 5 is installed in the valve pocket 2 to be fixed on the chock plug 8 by spring 9, the other end of iron core 5 is welded with the diameter spool 6 bigger than through hole 7, and spool 6 is a steel ball, and through hole 7 and spool 6 closures.When electromagnetic coil 10 no electric circuits, the elastic force of spring 9 flicks iron core 5, makes the steel ball spool 6 and through hole 7 tight closure of iron core 5 ends, makes through hole 7 and valve pocket 2 be in not on-state, and the gas of suction tude 4 can't flow in the outlet pipe 3; When electromagnetic coil 10 energisings, the magnetic attraction iron core 5 that electromagnetic coil 10 is produced makes its steel ball iron core 6 with its end leave through hole 7, and through hole 7 is on state with valve pocket 2, and the gas of suction tude 4 can flow in the outlet pipe 3.

Claims

1, normally closed solenoid valve, valve seat (1) and electromagnetic coil (10) with band through hole (7), has a valve pocket (2) in the valve seat (1), valve seat (1) one end is provided with outlet pipe (3) and is connected with through hole (7), one side is provided with suction tude (4) and is connected with valve pocket (2), be provided with iron core (5) in the valve pocket (2), one end of iron core (5) is fixed on the valve seat (1), the other end is provided with spool (6), it is characterized in that: spool (6) is the spherical and diameter diameter greater than through hole (7), and spool (6) is in the end of through hole (7).

2, normally closed solenoid valve according to claim 1 is characterized in that: valve seat (1) the other end is provided with chock plug (8), and described iron core (5) is fixed on the chock plug (8) by spring (9).