CN1061532C

CN1061532C - Pressure cooker time switch

Info

Publication number: CN1061532C
Application number: CN 96118256
Authority: CN
Inventors: 柏道超
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-11
Filing date: 1996-07-11
Publication date: 2001-02-07
Anticipated expiration: 2016-07-11
Also published as: CN1170557A

Abstract

The present invention relates to a timing switch used when a pressure cooker is used on a fuel gas furnace. The timing switch utilizes the pressure cooker to achieve air pressure which can raise a pressure limiting valve to push a piston, drive a rack, and automatically start mechanical components, such as timers, intermittent gears, etc. The present invention can complete the procedures of automatically turning off an air door, reducing fire force, automatically closing the fuel gas switch for flameout, etc. according to the time preset by people. Thereby, the timing switch can achieve the purposes of reducing labour intensity, saving fuel gas, and providing best fire force for cooking food so as to improve the quality of the cooking food, and has active functions to the safety usage of the pressure cooker. When the pressure cooker is not used, the switch can also be used, but only has the functions of a common switch.

Description

Pressure cooker time switch

The present invention relates on gas furnace, particularly the time switch of on gas furnace, using during the working pressure pot.

At present during working pressure pot cooking food, often need the people to grasp the required time of culinary art and the size of firepower, if grasp improper, will run into some problems, and for example cook, the time has lacked, just half cooked, be not very good eating, the time has been grown, and firepower is big, not only waste combustion gas, meal more is not very good eating by burnt simultaneously, causes waste; And for example cook meat, bone etc., the time has lacked, fiery merit less than, eat the dead time to have grown, not only waste combustion gas, also can lose due agreeable to the taste degree etc.

Purpose of the present invention, be to provide a pressure cooker time switch for gas furnace, it can control the time of culinary art and the size of firepower automatically according to people's instruction, and energy auto extinguishing, make the food of culinary art reach best fiery merit, thereby alleviate people's labour intensity, improve the food cooking quality, increase the delicious food and the agreeable to the taste degree of food.

The object of the present invention is achieved like this: set up a passive intermittent gear on the valve switch axle; With the valve switch axle axle regularly that be arranged in parallel, this band brake support ring, ratchet and knob that is provided with timer, braked wheel, spring and sliding motion thereon is the active intermittent gear of one.

On pressure cooker cover, set up an air outlet adapter seat, on connect a force pipe, the other end of pipe is received on the cylinder of time switch, and a piston is arranged in the cylinder, the piston tail end links to each other with tooth bar, tooth bar respectively with passive intermittent gear, oval brake switch on pinion.

The people is when using time switch, hand is pinched knob and is pushed away slightly forward, regularly the spring on the axle is compressed, ratchet breaks away from the control of ratchet forward, the brake support ring backs down the angle of caliper forward, brake off pincers are to the braking of braked wheel, and the more latter half of active intermittent gear of the number of teeth is meshed with passive intermittent gear on the valve switch axle forward simultaneously; When staff twisting knob counterclockwise rotates, drive passive intermittent gear and toward the clockwise direction the combustion gas door is opened fully; At the same time, passive intermittent gear drives tooth bar and is moved to the left, and piston also is moved to the left to the left end of cylinder, drives oval brake switch again with hour rack and rotates 90 ° of degree, and the major axis that makes oval brake switch in vertical state.When knob continued to rotate counterclockwise, because of the passive intermittent gear of the anodontia drive of active intermittent gear rotates, burnt gas switch kept maximum invariant position, only drive the timer clockwork spring energetically, the time index on the knob points to the time figure of being given.After the people looses one's grip, set back at the effect bottom ratchet wheel of axle spring regularly, with click-fit; Initiatively intermittent gear resets, and the gear of initiatively having a rest that its first half number of teeth is few is corresponding with passive intermittent gear; The brake support ring resets, and caliper plays braking action to braked wheel.

When the air pressure in the pressure cooker can lift pressure limiting valve and gives vent to anger, Pneumatic pipe cleaner overvoltage solenoid enters in the cylinder of time switch, promotes piston and tooth bar and moves right, and one section passive intermittent gear of rack drives is to turning over an angle counterclockwise, burnt gas switch is turned down, reduce firepower; Pinion on the oval brake switch of another section rack drives changes 90 ° of angles, and the major axis of oval brake switch is the level of state, and struts caliper, the timer rotation that picks up counting.When timer soon forwarded the time of being given to, initiatively intermittent gear just had tooth and the engagement of passive intermittent gear, and progressively with valve-closing, stove is flame-out, and timer puts in place.

The present invention is owing to adopted the timer timing, intermittent gear and tooth bar transmission, and utilize air pressure in the pressure cooker to lift to start the timer timing on opportunity that pressure limiting valve gives vent to anger, turn down valve, reduce firepower, so that close operations such as valve stops working automatically, thereby controlled cooking time exactly, improve the food cooking quality, saved combustion gas, alleviated people's labour intensity; Again since in pressure cooker, produce can lift the air pressure that pressure limiting valve gives vent to anger after, can automatically burnt gas switch be turned down, reduce firepower, like this to the safe handling of pressure cooker, play certain positive role.

Concrete structure of the present invention is provided by following examples and accompanying drawing thereof.

Fig. 1 is gas furnace, pressure cooker, force pipe connection diagram.

Fig. 2 is a time switch assembling B-B cross-sectional schematic.

Fig. 3 is a time switch assembling A-A cross-sectional schematic.

Fig. 4 is an active intermittent gear structural representation.

Fig. 5 is regularly the axle construction schematic diagram.

Fig. 6 is the switch shaft structural representation.

Fig. 7 is the caliper structural representation.

Fig. 8 is oval brake switch organigram.

Below in conjunction with 1-8 figure the present invention is done further detailed explanation:

On switch shaft 11, be fixed with burnt gas switch 22 and passive intermittent gear 10; With the switch shaft 11 regularly axle 18 that be arranged in parallel, band brake support ring 26, ratchet 13 and knob 28 that timer 23, braked wheel 15, spring 27, key 29 and sliding motion thereon are housed on this are the active intermittent gear 16 of one.Initiatively the facewidth of intermittent gear 16 is the twice of passive intermittent gear 10 facewidth, this wide tooth dimidiation portion, and the tooth of first half is few, and latter half of tooth is many, and the difference of its number of teeth equals the number of teeth on the tooth bar 9.The periphery of braked wheel 15 is provided with the caliper 14 of band angle 25, and the inboard of caliper 14 is fixed with rubber 24, and two outsides of braking jaw respectively are provided with spring 30, and the oval brake switch 19 of band pinion 20 is housed in the middle of the braking jaw.There is ratchet 12 in the outside of ratchet 13, and ratchet 12 is contained on the shell 17.

Covering of pressure cooker 3, set up an air outlet adapter seat 5, and connect force pipe 4 thereon, press the to be engaged in other end of pipe 4 is connected on the pipe joint 6 on the time switch 2 on the gas furnace 1, pipe joint 6 is an one with cylinder 7, and piston 8 is arranged in the cylinder 7, and the tail end of piston 8 is provided with tooth bar 9 and 21, pinion 20 in tooth on the tooth bar 9 and the 10 corresponding or engagements of passive intermittent gear, the tooth of tooth bar 21 and oval brake switch 19 is corresponding or mesh.

Pressure cooker time switch static condition before use is: as shown in Figure 1, 2, 3, piston 8 is in the right-hand member of cylinder 7, and tooth bar 9 and 21 also is in low order end, and the major axis of oval brake switch 19 is the level of state, and struts caliper 14, and braked wheel 15 is not braked.Burnt gas switch 22 on the switch shaft 11 is closed condition.Regularly the spring 27 on the axle 18 is in relaxation state; Ratchet 12 and ratchet 13 are in mated condition, and control regularly axle 18 can not be rotated; Initiatively the less gear of the first half number of teeth of intermittent gear 16 is meshed with passive intermittent gear 10.Angle 25 on brake support ring 26 and the caliper 14 is separated.Time index on the knob 28 points to " 0 ".

During working pressure pot time switch 2, at first force pipe 4 is received on the air outlet adapter seat 5 on the pressure cooker 3.Push away knob 28 slightly forward with hand then, regularly the spring 27 on the axle 18 is compressed, and ratchet 13 has broken away from the control of ratchet 12 forward; Brake support ring 26 withstands the angle 25 of caliper 14 forward, and caliper 14 is strutted, and braked wheel 15 is not braked; Initiatively intermittent gear 16 forward, the gear that the latter half of number of teeth is more is meshed with passive intermittent gear 10; With hand knob 28 was rotated regularly axle at 18 o'clock to counter clockwise direction, initiatively the passive intermittent gear 10 of intermittent gear 16 drives is opened to maximum position to clockwise direction with burnt gas switch 22, and this moment, firepower was also maximum; When knob 28 continues counterclockwise to rotate, because initiatively intermittent gear 16 is anodontia, can not drive passive intermittent gear 10 rotates, so, burnt gas switch 22 still is in maximum invariant position, knob 28 continues buttons when changeing, and the clockwork spring that only drives timer 23 makes the index on the knob 28 point to desire on the fixed time energetically simultaneously.When the passive intermittent gear 10 of active intermittent gear 16 drives is opened combustion gas door switch 22, passive intermittent gear 10 drives tooth bar 9 and is moved to the left, this moment, piston 8 was moved to the left to the left end of cylinder 7, with hour rack 21 when being moved to the left, the pinion 20 that drives on the oval brake switch 19 rotates 90 ° of angles, and the major axis that makes oval brake switch 19 in vertical state.After the people lighted stove fire and gives the instruction time of timer 2, hand left knob 28, and under the effect of spring 27, brake support ring 26 leaves caliper 14, and under the effect of spring 30, caliper 14 is braked braked wheel 15 immediately, and restriction regularly axle 18 can not be rotated; Initiatively intermittent gear 16 and ratchet 13 all return to the preceding static condition of original use.

When gas furnace 1 burning fire power makes air pressure in the pressure cooker 3 can lift pressure limiting valve to give vent to anger, air pressure in the pressure cooker 3 enters in the cylinder 7 by force pipe 4, pipe joint 6 simultaneously, promoting piston 8 and tooth bar 9,21 moves right, tooth hour rack 9 drives passive intermittent gear 10 and counterclockwise rotates an angle, burnt gas switch 22 is turned down, reduce firepower; The pinion 20 that tooth bar 21 drives on the oval brake switch 19 rotates 90 ° of angles, and the major axis of oval brake switch 19 is the level of state, and caliper 14 is opened, and timer 23 is not braked, during the beginning tropometer.Before timer 23 soon reaches the scheduled time, initiatively the few gear of the anterior number of teeth of intermittent gear 16 has tooth and 10 engagements of passive intermittent gear, drive burnt gas switch 22 to counterclockwise rotating, progressively close burnt gas switch 22, stove fire extinguishes, timer 23 puts in place, and the time index on the knob 28 points to " 0 ".Return to the static condition before using again.

In addition: pressure cooker time switch can use when working pressure pot not equally, but can only play the effect of general switch.

Claims

1. pressure cooker time switch, be installed on the gas furnace (1), working pressure pot (3) comes cooking food, it is characterized in that: with force pipe (4) air outlet adapter seat (5) and the pipe joint (6) on the pressure cooker time switch (2) that pressure cooker (3) covers are connected, the piston (8) that utilizes the air pressure that produces energy jack-up pressure limiting valve in the pressure cooker (3) to promote pressure cooker time switch (2) moves; Pipe joint (6) is an one with cylinder (7), piston (8) in the cylinder (7) is an one with tooth bar (9), (21), tooth bar (9) is meshed with passive intermittent gear (10) or is corresponding, and tooth bar (21) is meshed with pinion (20) on the oval brake switch (19) or is corresponding; Be fixed with valve switch (22) and passive intermittent gear (10) on the switch shaft (11);

With switch shaft (11) a timing axle (18) is set abreast, this a end is equipped with timer (23) and is fixed with braked wheel (15), the other end is established a key (29), suit one active intermittent gear (16) on it, brake support ring (26), ratchet (13) and knob (28) are one with active intermittent gear (16), can be together in the regularly reciprocal sliding motion of direction of axle (18) upper edge key (29); Between braked wheel (15) and the active intermittent gear (16) spring (27) is housed;

Two outsides of braked wheel (15) are provided with the caliper (14) of band angle (25), and the inboard of these pincers is fixed with rubber (24), and the outside is provided with spring (30), are provided with the oval brake switch (19) of band pinion (20) in the middle of the braking jaw; Angle (25) on the caliper (14) is corresponding with the angle of brake support ring (26);

Initiatively the facewidth of intermittent gear (16) is the twice of passive intermittent gear (10) facewidth, two halves before and after initiatively the number of teeth on the intermittent gear (16) is divided into, the first half number of teeth is few, the latter half of number of teeth is many, when this gear of hand push travels forward, the latter half of gear that its number of teeth is many is meshed with passive intermittent gear (10), drive passive intermittent gear (10) and rotate this moment when rotating active intermittent gear (16), burnt gas switch (22) is opened, driving tooth bar (9) simultaneously moves, make piston (8) move on to the left end of cylinder, make pinion (20) rotate an angle of 90 degrees, oval brake switch (19) in vertical state, the time indicator on the knob (28) points to the regular hour numeral; External force is removed, and set back by the active force of spring (27), and the less first half gear of number of teeth this moment is meshed with passive intermittent gear (10) or is corresponding.

2. pressure cooker time switch according to claim 1, the air pressure that it is characterized in that having only pressure cooker in (3) reaches when can the jack-up pressure limiting valve giving vent to anger, air pressure in the cylinder (7) could promote piston (8) compression spring (30) moves tooth bar (9), (21), tooth bar (9) drives passive intermittent gear (10) and rotates an angle when mobile, burnt gas switch (22) is turned down, reduce firepower, drive pinion (20) and oval brake switch (19) rotation an angle of 90 degrees when tooth bar (21) is mobile, strut drag knob (14), timer (23) is started working.

3. pressure cooker according to claim 1 regularly starts, it is characterized in that the front and back halves of intermittent gear (16) initiatively all has the place of tooth, in fact be exactly the whole tooth of broad, latter half of many teeth will be put in order tooth exactly and reject the part of being left 1/2 facewidth after 1/2 facewidth.