CN2385188Y - Automatic closing valve for accidental flameout of gas stove - Google Patents

Abstract

The utility model discloses an improved gas safety valve with an automatic protection device. The utility model is characterized in that a valve body of an existing conventional gas valve is provided with a control device which is additionally provided, is composed of a sensing mechanism and an actuating mechanism, and is used for controlling a valve core to drive a rotating handle to do the closing and the rotation. The utility model controls the same valve core, when the utility model is opened, the electric current is output by a temperature sensor, dynamic force is generated by an electromagnet, and the valve core is locked by a position pin. When the fire is accidentally extinguished, the output electric current is reduced, locking pressure is cancelled, and the valve core returns to an original position to realize the closing by the function of the restoring force of a spring. The use is safer and convenient. The utility model can replace a conventional gas valve without the automatic protection function.

Description

The unexpected flame-out self acting stop valve of combustion gas tool

The utility model relates to the combustion gas air valve device, specifically a kind of air valve with safety protection device.

Existing combustion gas tool air valve has two kinds, a kind of is the combustion gas tool air valve of not establishing protector of accident extinguishing, as the single, double road air valve on the universal gas kitchen range, it mainly is made up of valve body, spool, swing handle, suction port, air outlet and interlock ignition mechanism, meets accident easily under the operator-less situation; Another kind is the air valve that has the automatic control closing function, it comprises an electromagnet by temperature transducer control, its armature directly is connected with the air valve spool, automatically realize during the output of temperature transducer no current closing, automatic closing function when this air valve can play accident extinguishing, but it occurs with independent additional device form of installing usually, be equivalent to increase a valve, this is from another angle, increased a position of leaking combustion gas undoubtedly, obviously belong to good configuration by no means, it is a little unfavorable to bring unavoidably.

The purpose of this utility model is to propose the unexpected flame-out self acting stop valve of a kind of improved combustion gas tool, and it combines both structural features, controls a spool jointly, and nationality is to overcome above-mentioned deficiency separately.

The unexpected flame-out self acting stop valve of the combustion gas tool that the utility model provides, comprise valve body, spool, swing handle, it is characterized in that on valve body, being provided with one additional, being used to of forming control spool by sensing mechanism and actuator and drive the control gear that swing handle is closed rotation: said sensing mechanism is made of a temperature transducer and electromagnet thereof; Said actuator be used to produce the spring of restoring force and positioning ring, moving plate by connecting rod means and one, and spool is formed; Connecting rod in the connecting rod means links to each other with electromagnet armature, be provided with a locating stud with the connecting rod interlock therebetween, the hole groove that row establishes on centring pin end and the positioning ring cylindrical wall matches, by the mode of pressure of executing at armature and spring restoring force balance location and locking are set, the setting of spring acts on moving plate and the positioning ring its restoring force to drive spool with swing handle that to close the direction of gas distribution channel consistent.

The utility model has the advantages that and to control the positioning pressure that electromagnet produces switch by temperature transducer, the position location of control spool rotation angle and at temperature transducer when stopping working no-output, cancel pressure, device and the existing Air Valve Control of cutting off gas distribution channel under the restoring force effect of spring combine, control same spool, control procedure is directly perceived, and is easy to use.Because when armature was removed pressure, spring force can promote the spool rotation, to guarantee to realize closing, reliable operation is also checked easily.

Describe below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is the structural representation of gas range air valve.

Fig. 2 is a structure principle chart of the present utility model.

As shown in Figure 1, this is a kind of common structure of air valve of gas range, suction port 1 place down, and logical outward air supply pipe, snapping is screwed from the bottom up.Air outlet 2 is access to burning kitchen range dish, and the single port twoport all can.The 3rd, valve body is provided with spool in the valve body valve pocket, and spool can rotate with swing handle 5 and connect or close gas distribution channel, 6 expression knobs.The 7th, piezoelectric ignition device is contained on the supporting plate 4 of a switching or installation usefulness, correspondingly is provided with the shifting block device of ignition usefulness on the swing handle axle.Establish the inclined-plane that rollback is used on the shifting block, corresponding with shifting block, the stage clip of dodging usefulness in addition, this is a kind of of more common structure, the employing pulse igniting that has.It is characterized in that the extention that belongs to inventive point comprises temperature transducer 8, is that thermocouple and electromagnet 9 are connected on the supporting plate 4 together here.The locating stud of a locking usefulness of connecting rod 10 formation connecting rod means controls located in the above, it is provided with a part of actuator that comprises spring in face shield chamber down.

The structural principle that embodiment shown in Figure 2 specifically provides.The part valve body of wherein indicating 3 is synthetic whole with 3 pairs of the former valve bodies of part of Fig. 1, and 18 is the overlapping joint of swing handle end, joins with spool 17.Be arranged in 14, one on the spring that valve pocket 13 on the valve body 3 is provided with dish type and be fixed on the valve body, also can adopt torsion spring or sheet spring structure.The 15th, moving plate is stuck on the base of a fruit head of spool, and the termination of positioning ring 16 is provided with one section flange, stirs bar and is contained on the positioning ring face, and other establishes a stage clip overhead and imposes elastic force, and the shifting block on the moving plate acts on flange arc end.Positioning ring is provided with that pin-and-hole is used for that mounting spring is moved about, arranges on its cylindrical wall to be provided with the location with hole groove 19, is used when doing the pressure location with locating stud 11.The right 8 is thermocouples, is contained in the zone of combustion, is used to produce thermoelectric current, can export enough electric currents, by 12 actions of electromagnet 9 control armature.Armature 12 is connected with connecting rod 10, and the other end of connecting rod is by the pillar 20 and the supporting plate 4 of suspension joint are fixed with it.Middle locating stud and connecting rod overhead or movable adjustable be connected and along the key seat activity, the locating stud end is blunted cone shape, pass the valve shell layer or directly overhead on the wall of positioning ring 16, do to locate and cooperate with hole groove 19 slotted eyes.

The dynamic duty process is as follows:

1, in the face of air valve, push-turn key 6 is opened greatly to counterclockwise direction, and turning to then needs the position,

After combustion gas is lighted simultaneously, keep 3-5 second, be parked on the hole groove fixed position of a certain correspondence.Opening

In the time of big, fuel gas path is opened, and ignition mechanism is lighted a fire automatically, ignition 3-5 electromagnet in second

The beginning sticking reaches effective location;

After working in 2 stickings location, but the regulated at will firepower is transferred to the position that needs, and even zero-bit is closed

Close;

When 3, knob is positioned at the non-zero position, if meet unexpected flame-out suddenly, and combustion gas is still in discharging, then in 45 seconds, along with the surplus temperature drop of temperature transducer is low, the electric current in the electromagnetic coil is decreased to and is not enough to keep sticking, then under the effect of spring restoring force, antagonism locating stud end pressure and upspringing, the shifting block that is driven moving plate 15 by the flange of positioning ring 16 cuts off blast tubes rapidly toward zero-bit direction rotating band movable valve plug 17, realizes closing automatically.Former thereupon combustion gas of releasing is diffusion rapidly also, is diluted to safe degree.

4, keep safety shut-off state.Again open, then repeat said process.

Claims (1)

1, the unexpected flame-out self acting stop valve of a kind of combustion gas tool, comprise valve body (3), spool (17), swing handle (5), it is characterized in that on valve body, being provided with one additional, being used to of forming control spool by sensing mechanism and actuator and drive the control gear that swing handle is closed rotation: said sensing mechanism, by a temperature transducer (8) and electromagnet (9) formation thereof; Said actuator, by connecting rod means and a spring (14) that is used to produce restoring force, and positioning ring (16), moving plate (15), and spool (17) is formed; Connecting rod in the connecting rod means (10) links to each other with electromagnet armature (12), be provided with a locating stud (11) with the connecting rod interlock therebetween, the hole groove (19) that row establishes on centring pin end and the positioning ring cylindrical wall matches, by the mode of pressure of executing at armature and spring restoring force balance location and locking are set, the setting of spring makes its restoring force act on moving plate (15) and positioning ring (16) and goes up that to close the direction of gas distribution channel consistent with swing handle drive spool.

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