CN2353991Y

CN2353991Y - Electromagnetic valve for refrigerating apparatus

Info

Publication number: CN2353991Y
Application number: CN 98245439
Authority: CN
Inventors: 吴贤良
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-19
Filing date: 1998-10-19
Publication date: 1999-12-15
Anticipated expiration: 2008-10-19

Abstract

The utility model relates to an electromagnetic valve for a refrigerating apparatus, which is especially suitable for being installed to be used in the refrigerator, the freeze cabinet, etc. The utility model is composed of a magnetizer, a coil, a coil skeleton of a packaging circuit board with a leading wire, a movable iron core, a fixed iron core; the attraction surfaces of the movable iron core and the fixed iron core are the matching surfaces of an inner conical surface and an outer conical surface; a control circuit on the circuit board is a full wave bridge type rectifier circuit composed of a diode, is connected with resistor R and capacitance C in parallel, and is connected with the coil L in series; the characteristics of the circuits of the resistor R, the capacitance C and the coil L are utilized to make the movable iron core and the fixed iron core to be attracted when the current is big, and to maintain the attracting state of the movable iron core and the fixed iron core when the current is small, therefore, the effect of saving the energy by 50% is achieved; simultaneously, the attracting surface is enlarged, the attracting performance is enhanced, and the impact noise of the attracting instant is reduced. The volume is caused to be reduced, the material is saved, and the utility model has explosion protection and moisture protection.

Description

The refrigerating appliance solenoid valve

The utility model relates to a kind of solenoid valve, the refrigerating appliance solenoid valve of installing, using in the electrical equipment such as suitable especially refrigerator, refrigerator.

Employed solenoid valve power consumption in the current refrigerator, and noise is big, befouling environment, do sorrow people's life.

Patent No. 96208235.X " household refrigerator solenoid valve " only provides a kind of buffering spacer that installs the band eyelet additional, reduces the technological scheme of using noise.

The patent No. 95206838.3 " a kind of low-power consumption electromagnetic valve " provides a kind of control with the winding change-over circuit on the circuit board to start winding and keep winding to reach the purpose of low-loss and energy-saving.

The purpose of this utility model is to provide a kind of refrigerating appliance solenoid valve, and is simple in structure, volume is little, both low power consumption can saving power, can reduce noise again.

The utility model is achieved in that refrigerating appliance is with connecting the moving iron core that has spring, sealing plug in the coil rack of solenoid valve by the circuit board that has magnet case, coil and packaging belt lead-in wire, have the static iron core of valve port and the diplopore utmost point, spring and connect whole the composition with sleeve pipe, and the adhesive face of a. static iron core, moving iron core is the fitting surface of inside and outside conical surface, and the control circuit on the b. circuit board is by diode D ₁, D ₂, D ₃, D ₄The full-wave bridge rectifier circuit of forming, two exchange termination power, two dc terminal are connecting resistance R, an end (end of coil L) of capacitor C parallel connection and the end (end of resistance R, capacitor C parallel connection) of coil L respectively, and the end in addition of resistance R, capacitor C parallel connection be connected with holding in addition of coil L form.

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

Fig. 2. the control circuit circuti diagram;

Fig. 3. control circuit alternative plan circuti diagram.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Moving iron core (10) has through hole for middle and periphery, and an end is the plane, and an end is conical cylindrical body.

Static iron core (7) is for there is through hole the centre, and an end has outside thread, and an end is the cylindrical body of the internal conical surface that cooperates with the conical surface that moves iron core (10) end.

Control circuit on the circuit board (1) is by diode D ₁, D ₂, D ₃, D ₄Form full-wave bridge rectifier circuit, two exchange termination powers, two dc terminal respectively the end (end of coil L) of connecting resistance R, capacitor C parallel connection and coil L one end (end of resistance R, capacitor C parallel connection) and the end in addition of resistance R, capacitor C parallel connection be connected with holding in addition of coil L form.

Be wound with (L) coil (4) on the coil rack (2), be fixed with magnet case (5) on the biend, the static iron core (7) of an end fixing belt valve port (8) of endoporus, and be fixed on the magnet case (5) with nut.The end in addition of endoporus connects the diplopore utmost point (12) and is with the moving iron core (10) of sealing plug (11), spring (15), and sleeve pipe (13) links into an integrated entity the diplopore utmost point (12), moving iron core (10), static iron core (7), spring (9).

The circuit board (1) of band lead-in wire (14) is fixed on the outside of coil rack (2) coil (4), is integral with epoxy encapsulation at last.

During use, this solenoid valve is connected on 220 volts of power supplys, switch on moment, no electric charge is equivalent to the short circuit state on the electric capacity, supply voltage all is added in coil L two ends, the electric current maximum that flows through among the coil L, this moment, moving iron core (10) moved to static iron core (7) direction under the electromagnetic force effect, promptly made dynamic and static iron core adhesive under the maximum current situation.The electric capacity both end voltage increases gradually subsequently, and reach stable, the suitable turnoff state of electric capacity this moment, supply voltage is added on resistance R and the coil L, at this moment the electric current that flows through on the coil L is just very little, but the attracting state that can keep dynamic and static iron core (10), (7), at this moment the then moving iron core (10) of deenergization leaves static iron core (7) and gets back to the origin-location under the effect of spring (9) power.At this moment the electric charge on the capacitor C is a cyclic process by the resistance R discharge up to zero.Energising again, adhesive makes the continuous fast pace periodic duty of solenoid valve.

The working procedure of second kind of control circuit is same as described above not to be described in detail.

The utility model is compared with prior art: this magnetic valve circuit plate control circuit utilizes R, C, L circuit Charge-discharge characteristic is grasped time difference and the quantity of its maximum, minimum current, and it is dynamic and static that maximum current is used for The adhesive of iron core, minimum current is used for keeping the attracting state of dynamic and static iron core, takes full advantage of the energy, power consumption Reduce by 50% than original magnetic valve, and temperature rise is low, wiring board can be encapsulated in again in the coil rack, reach explosion-proof, Moistureproof purpose. Adhesive mating surface because of dynamic and static iron core is improved to inside and outside cone by original flat state again The mating surface of face has increased contact area electromagnetic force is increased, if will keep same electromagnetic force, just can subtract The volume of few magnetic valve. And the adhesive displacement of moving iron core was S originally, and adhesive face cone face angle is now α, then vertical displacement is Ssin α, the bump distance is reduced, so noise is low.

Claims

1. refrigerating appliance solenoid valve, by having magnet case (5), connect the moving iron core (10) that has spring (15), sealing plug (11) in the coil rack (2) of the circuit board (1) of coil (4) and packaging belt leaded (14), the static iron core (7), spring (9) and the diplopore utmost point (12) that have valve port (8), and connect whole the composition with sleeve pipe (13), the adhesive face that it is characterized in that a. static iron core, moving iron core is the fitting surface of inside and outside conical surface, and the control circuit on the b. circuit board is by diode D ₁, D ₂, D ₃, D ₄The full-wave bridge rectifier circuit of forming, two exchange termination power, two dc terminal are connecting resistance R, an end (end of coil L) of capacitor C parallel connection and the end (end of resistance R, capacitor C parallel connection) of coil L respectively, and the end in addition of resistance R, capacitor C parallel connection be connected with holding in addition of coil L form.

2. solenoid valve according to claim 1 is characterized in that moving iron core (10) has through hole for middle and periphery, and an end is the plane, and an end is conical cylindrical body.Static iron core (7) is for there is through hole the centre, and an end has outside thread, and an end is the cylindrical body of the internal conical surface that cooperates with the conical surface that moves iron core (10) end.