CN87214649U

CN87214649U - Automatic lighter for gas stoves

Info

Publication number: CN87214649U
Application number: CN 87214649
Authority: CN
Inventors: 兰侠
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-10-22
Filing date: 1987-10-22
Publication date: 1988-07-13

Abstract

The utility model relates to an automatic lighter for gas stoves, which is added a beating rod and a beating rod spring based on an original piezoelectric ceramic lighter. The beating rod is matched with a beating block in the slide mode. A discharge needle is installed in the cavity body of a lighting ceramic block and is provided with a fire bounded below adjustment and control machine. The utility model has the advantages of simple structure, high reliability, long service life, convenient operation, low cost, multiple points for discharging to light and convenient batch production.

Description

Automatic lighter for gas stoves

The utility model relates to a kind of gas furnace automatic ignitor, is specially adapted to the automatic igniting of common liquefied gas furnace and gas burner.

The piezoelectric ceramics igniter that is used at present on the low-grade gas furnace mostly is that spray point is fixed on stove and accessory, the single-point discharge, and the igniting reliability is not high.And do not solve the regulation and control problem that the lower limit fire is measured, and when needs are turned the fire amount down, carefully transfer while must see the fire amount, do not note slightly just might extinguishing fire.

The purpose of this utility model provides a kind of simple in structure, igniting reliability height, and long service life, and can regulate and control the gas furnace automatic ignitor that the lower limit fire is measured.

The utility model is achieved in that it comprises piezoelectric ceramics, hits piece, hits piece spring, spray point, pusher dog, and particularly it also comprises and hits bar and hit the bar spring, hits bar and hits piece for being slidingly matched, and spray point is installed in the cavity of the ceramic block of lighting a fire.

Pusher dog is installed on the switching knob, pusher dog drives and hits piece when turning knob, hit piece and promote to hit bar, both compress spring separately simultaneously, when going to certain angle, piece is hit in the pusher dog disengaging, hit piece and hit bar and move under the effect of spring force separately, because the quality of hitting piece is less than hitting bar, and the spring force that they bear is identical, therefore in accelerated motion, they can draw back a bit of distance, hit piece and at first clash into piezoelectric ceramics, produce a high-voltage pulse, and then hit bar and hit piece, hit the impulsive force that piece will hit bar and pass to piezoelectric ceramics, produce second high-voltage pulse, two high-voltage pulses that successively produce reach spray point in the igniting ceramic block cavity through leads, so two discharge sparks can successively occur between spray point and the burner, light gas reliably.In addition, in the igniting ceramic block positive and negative two spray points can be set also, positive and negative spray point is connected with the positive and negative lead wires of piezoelectric ceramics respectively.Two high-voltage pulses that impact to produce so just can be between positive spray point and burner, and between burner and the negative spray point, and four discharge sparks once appear in the realization disruptive discharge of connecting, and obtain higher igniting reliability.

The regulation and control of the utility model lower limit fire amount, be to realize like this, it forms fire amount regulating and controlling mechanism by knob, button bar, regulating sleeve, straight pin, one crank slot is arranged on the knob, cooperate by the button bar of straight pin with the band straight trough, straight pin is spun in the inner trapezoidal thread groove of regulating sleeve, regulating sleeve is enclosed within on the knob, and fix with alignment pin, alignment pin can rotate 360 ° in the alignment pin chute of knob, rotary regulating sleeve, and straight pin slides in cover inner trapezoidal thread groove, simultaneously in the crank slot of knob, do axially-movable, drive the button bar and rotate a certain angle with respect to knob.In use, the back twist switch, the fire amount reduces gradually, when back twist puts in place.Be that pusher dog is hit projection on the piece when withstanding, at this moment because the lower limit fire amount that is used in when first use back twist puts in place on the stove and accessory is inappropriate often, at this moment rotary regulating sleeve again, change the fit angle of button bar and knob, measure and obtain suitable lower limit fire, in a single day lower limit fire amount mixes up, in the use afterwards, generally do not need to transfer again.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model overall structure schematic diagram.

Fig. 2 is the switching device schematic diagram.

Fig. 3 is positive and negative spray point scheme of installation.

Fig. 4,5 is a lower limit fire amount regulating and controlling mechanism schematic diagram.

Fig. 6,7 is igniting ceramic block schematic diagram.

The utility model is by switching device 1, and igniting ceramic block 2 and lower limit fire amount regulating and controlling mechanism 3 are formed, and the igniting ceramic block is installed on the burner neck, and the igniting ceramic block has the cavity of more than one installation spray point, and spray point is connected with lead with piezoelectric ceramics.As shown in Figure 1.

The switching device of Fig. 2 by piezoelectric ceramics 4, pusher dog 5, hit piece 6, hit bar 7, hit piece spring 8, hit bar spring 9, assembling box 10, installation cover 11 form, hitting piece 6 has a blind hole and hits bar 7 and be slidingly matched, hitting the bar other end has a boss so that with hit bar spring 9 and interact.Wherein pusher dog is to be used for driving hitting piece and hitting bar compression spring separately, makes its storage energy, and when piece was hit in the pusher dog disengaging, the energy of two compression springs began to discharge, and hit piece and gave two impulsive forces of piezoelectric ceramics with hitting bar with priority, so obtain two high-voltage pulses.

Lower limit fire amount regulating and controlling mechanism shown in Fig. 4,5 mainly is made up of knob 12, straight pin 13, regulating sleeve 14, button bar 15, alignment pin 16.On switching knob and button bar, open a crank slot and straight trough respectively, in groove, insert a straight pin 13 during connection, and on knob 12, put a regulating sleeve 14 that has inner trapezoidal thread, simultaneously straight pin 13 is screwed in the trapezoidal thread, when rotary regulating sleeve 14, straight pin 13 crank slot direction along knob 12 in the trapezoidal thread of regulating sleeve 14 is done axially-movable, thereby drives 15 rotations of button bar, change the angle of button bar and knob, and obtain suitable lower limit fire amount.

Fig. 6,7 igniting ceramic block are by ceramic body 17, spray point 18, clamp nut 19, lug plate 20, lead 21 are formed, the cavity that spray point is installed is arranged at ceramic block top, and the bottom has a hole to supply to penetrate lead, the ceramic block bottom is a rectangular channel, can be enclosed within on the stove fire neck during installation.Ceramic body is the material of high temperature high voltage resistant, and spray point is fixed on by clamp nut in the cavity of ceramic block, when high-voltage pulse reaches spray point by lead by lug plate, just produces the high-voltage breakdown discharge between spray point and stove fire, produces spark ignition gas.Because spray point is placed in the cavity of ceramic body, igniting back spray point does not directly contact the high-temperature high-pressure of flame on the one hand, is not subjected to washing away of combustion gas on the other hand, and therefore long-term use can scaling loss, long service life.

Assembling box 10, installation cover 11, knob 12, regulating sleeve 14 are all used injection molding.

The utility model has the advantages that the multiple spot discharge igniting, the igniting good reliability. Spray point has been avoided ablation in the ceramic block cavity, long service life. And lower limit fire amount is controlled, simple in structure, and fitting operation is convenient, cost is low, be convenient to batch production.

Claims

1, a kind of gas furnace automatic ignitor, it comprises piezoelectric ceramics, hits piece, hits the piece spring, and spray point, pusher dog is characterized in that it also comprises to hit bar, hit the bar spring, and hit bar and hit piece for being slidingly matched, spray point is installed in the cavity of the ceramic block of lighting a fire.

2, automatic ignitor according to claim 1, the ceramic block that it is characterized in that lighting a fire has the cavity of more than one installation spray point, and the igniting ceramic block is installed on the burner neck.

3, automatic ignitor according to claim 2 is provided with positive and negative two spray points in the ceramic block that it is characterized in that lighting a fire, positive and negative spray point is connected with the positive and negative lead wires of piezoelectric ceramics respectively.

4, a kind of gas furnace lower limit fire amount regulating and controlling mechanism, comprise knob, button bar, it is characterized in that also comprising a crank slot is arranged on regulating sleeve, straight pin, the knob, cooperate by the button bar of straight pin with the band straight trough, straight pin is spun in the inner trapezoidal thread groove of regulating sleeve, regulating sleeve is enclosed within on the knob, and fix with alignment pin, alignment pin can rotate 360 ° in the alignment pin chute of knob, straight pin slides in cover inner trapezoidal thread groove during rotary regulating sleeve, simultaneously in the crank slot of knob, do axially-movable, drive the button bar and rotate a certain angle with respect to knob.