CN2492155Y - Multi-sensor rotary-closing automatic control pressure-cooker - Google Patents

Abstract

The utility model relates to a spinning and conjunction type automatic controlling pressure cooker with a plurality of sensors. The pressure cooker comprises a water level automatic detector (3), a click type pressure restrict valve (9), an infrared pressure measurement and control safety valve (8), an electromagnetism safety handle (11), a spill basin (7), a W-shaped model silicon rubber cover sealing ring (14) and a spring detector (134). Compared with prior pressure cookers, the utility model has the advantages of convenience for adjusting pressure, visualized indicating, and multiplex safety protection. The connector of the pressure cooker can be controlled by an electronic control Gas fitting and a single-chip by digital or imitation signal. The automation degree and the safety protection level for the fuel gas type pressure cooker are improved, and the utility model is an upgrade product for the home-use pressure cooker.

Description

The multisensor revolving type is controlled pressure cooker automatically

The present invention relates to a kind of sensor and control household electrical appliance (cooker) field automatically.

In the prior art of pressure cooker, mainly done some improvement on pressure limiting valve and safety valve, silicone rubber O-ring pressure release window, dead-man's handle: the pressure limiting valve that has has been taked large aperture gas port anti-clogging and the quick-fried measure of spring clip erosion control; Safety valve changes spring (wherein utilize in the simple and easy indication pot of piston rod lifting and have or not pressure) into by easy molten chip of past; Dead-man's handle generally adopts latching valve (locking of air pressure float tenon) measure, and offers safety relief hole etc. in pot cover silicone rubber O-ring position.Above-mentioned measure has certain improvement to the security performance of pressure cooker, still, still has big limitation.Show that mainly prior art just guarantees the safety of pressure cooker during the gas superpressure by pressure release in pressure cooker, can't accomplish to control automatically firepower and prevent that the pressure cooker internal pressure from further raising; The pressure limiting valve of prior art can not or be not easy to according to the kind of cooking food and the meticulous adjusting of characteristics and changes pressure cooker internal pressure (can not realize automatic cooking) in good time; The actual pressure indication does not have graduation mark so that accurate, judgement fast in the pressure cooker; Can not accomplish regularly culinary art; The handle latching valve easily stops up malfunctioning because of swill; The anti-overflow basin can only collect the liquid that pressure limiting valve is discharged, and the liquid that discharge in safety valve, handle float hole is failed effectively to collect.Though and the prior art of electric pressure cooker can realize automatic cooking, but it does not detect actual pressure in the pressure cooker, but by temperature control element such as magnetic steel temperature limiters at pot external body thermometric and control the electric heating circuit break-make and control operating pressure in the pot indirectly, meticulous inadequately on operating pressure is regulated and control; Adopt the mode of spring contact break-make to regulate firepower, firepower is regulated underaction, accurate, ablates easily in the contact, and spring measurement and control of temperature element is directly to pressure cooker heater or heated body thermometric, and long-term work was easily lost efficacy down in high temperature.Y type silicon rubber pot cover sealing ring is 150 ° of open two arms because of the inboard, and structurally the elastic force deficiency easily causes deformation failure, causes sealing ring gas leakage and overflows the interior soup of pot.

Task of the present invention provide a kind of simple in structure, cost is relatively low, the safe and reliable multisensor automatic cooking pressure cooker of action.It can set the pressure cooker operating pressure easily and intuitively, can show and control pressure cooker internal pressure, water level, temperature and work steam discharge situation automatically by sensor, can carry out numeral or analog signal interface with electric-controlled gas valve (driver is stepper motor or magnetic valve) and Single-chip Controlling gas-cooker easily, control cooking time and firepower automatically and accurately; Automatically lock handle, dead-man's handle automatic unlocking when the pressure cooker internal gas pressure is lower than certain pressure when reaching certain air pressure in the high-speed double electromagnet pressure cooker.

Push type pressure limiting valve among the present invention is located at the centre of pot cover, adopts nested spring structure, and the pressure limiting valve main body is connected by pressure limiting valve air guide screw spiral with high-pressure pot cover, and an anti-blanking cover is arranged in the bottom of air guide screw rod; The exhaust hole that two symmetries are arranged in the pressure limiting valve bottom part body (apart from the pot cover certain distance) of pot cover upside, one of them exhaust hole is over against pressure limiting valve work steam discharge sensor cluster, this assembly is a square box shape, and an annular stator is arranged at its bottom, is linked under the pressure limiting valve main body on the pot cover.Sensor cluster has a heat-sensitive sensor towards the exhaust hole side, is fixed on the work steam discharge check-out console outside; In the work steam discharge check-out console infrared light emitting diode is installed.There are a Hookean spring and said modules rear side to join in work steam discharge check-out console inboard; There is one group of infrared ray to receive the triode array at this assembly housing and infrared light emitting diode opposed inside.During pressure limiting valve work steam discharge, thermistor can at first detect thermal signal; When steam discharge air pressure increases, pressure cooker is discharged gas and is overcome work steam discharge sensor cluster spring pressure, thereby the steam discharge check-out console that pushes the work forward moves after driving infrared light emitting diode, above-mentioned infrared ray receives the work steam discharge situation that the triode array just can detect pressure cooker, and can transmit work exhaust steam pressure status signals to the parallel input port of single-chip microcomputer with the parallel way of output, also can only use selected operating point signal or operating point and each signal line of upper and lower side thereof to transmit analog signal and give corresponding control appliance; In pressure limiting valve main body one side middle and upper part helical teeth shape locating slot is arranged.The pressure limiting valve loam cake is linked on the pressure limiting valve main body, and the inner centre of loam cake has one the two telescopic piston of joint fit, in the middle of the piston line pressure spring is housed, and piston base has the two seals groove, is with circular silicone rubber O-ring on the seal groove; Relative main body locating slot one side of loam cake has a location handle, can set operating pressure by the location locking bolt on the position fixing handle.This push type pressure limiting valve pressure regulate fast and reliable accurately, its work steam discharge sensor of setting up can automatic measuring and controlling to the work steam discharge situation of pressure cooker, is convenient to and single-chip microcomputer and other electric-controlled parts interfaces.

The water level automatic detector adopts multi-electrode observing and controlling mode in the pot, it highly is slightly less than the pressure cooker body height, there are a working power electrode and a temperature element (adopting platinum temperature detecting resistance or similar temperature element) in the nearly pressure cooker of its bottom one side joint bottom, hit exactly to the vertical line at its top in its bottom, equidistant (also can adopt gradually white-out row) many of distributions are (identical with the figure place of single-chip microcomputer, as adopt 16 single-chip microcomputers, 16 electrodes then can distribute, other are analogized) stainless steel electrode, do high-insulation with polytetrafluoroethylene (PTFE) around the electrode and handle.Inside at the water level automatic detector, be lined with one deck thermal insulation, insulating materials (as asbestos or expanded perlite film etc.), each electrode signal line is by water level automatic detector signaling interface, connect water level automatic detection signal line in the pot, deliver to the parallel digital signal input interface of single-chip microcomputer after amplification is handled through signal.Have or not the signal of telecommunication can detect actual water level in the pressure cooker easily according to each electrode, be used for control culinary art in real time.By detection, can prevent effectively that also food burns in pressure cooker dry combustion method or the pot to water level in the pressure cooker and temperature.

Infrared ray pressure testing and controlling safety valve is located at a side of pressure limiting valve, and it is divided into five parts: Anti-stop cover base, main body, middle cover, loam cake, infrared ray pressure sensor.Main body connects safety valve air guide screw rod and is fixed on the high-pressure pot cover by it; Main body is cylindrical, and the both sides at its middle part have four safe exhaust holes of symmetry; Body interior has a piston body, the two seals groove is arranged at the bottom of piston body, be with silicone rubber O-ring in the seal groove, be used to prevent a pot inner high voltage steam premature leakage, and with silicon rubber middle cover sealing ring synergy, avoiding pot inner high voltage gas to scurry into the safety valve loam cake influences infrared ray pressure detecting element operate as normal.Be with Hookean spring on the connecting rod of piston; The top of main body and middle cover are by being threaded, and there is a rounded square hole in the central authorities of middle cover, and there is silicon rubber middle cover sealing ring the inboard in hole.Piston rod is a rounded square, passes from middle cover rounded square hole.Piston rod part is being fixed an infrared light emitting diode.The fixing threaded hole of two symmetries in middle cover two ends is used for being connected with loam cake.The circle cup of loam cake shape such as back-off.Its inside with the corresponding side of infrared light emitting diode, arranged vertical several infrared rays and is received triodes (quantity is identical with single-chip microcomputer signal input electrode figure place).Infrared ray receives the leaded interface of triode and can link to each other with single-chip microcomputer parallel digital signal input interface, or directly regulates the firepower size by analog circuit control step electric motor type or electromagnetic type gas valve.When the pressure cooker internal pressure increased, steam pressure overcame the emergency valve piston spring force in the pot, thereby promoting to move on the piston to drive on the infrared light emitting diode moves, and infrared ray receives the received infrared signal of triode array respective change also takes place.When the pressure cooker internal gas pressure continue to rise and promotes that piston rises and when having surpassed safe exhaust hole minimum altitude, pot inner high voltage steam releases from the safety exhaust hole, guarantees that a pot interior vapor pressure does not does not meet or exceed safe air pressure; When vapor pressure in the pressure cooker descended, piston moved down under spring force and the effect of piston own wt.When the piston underside sealing ring is lower than safe exhaust hole minimum altitude, closed safe valve exhaust hole.When hot outer reception triode array is connected with the parallel input port of single-chip microcomputer, can form data signal output; Also relevant work can be put holding wire or operating point and up and down each holding wire receive on magnetic valve or the stepper motor driver, can control automatically gas valve by analog form.Safety valve is to the observing and controlling at any time of the pressure condition in the pressure cooker and show that by infrared ray pressure sensor output control signal, firepower is regulated in realization automatically continuously.When steam pressure reaches safe pressure in the pressure cooker, can realize safe steam discharge reliably, by outputing signal to single-chip microcomputer or other analog circuits, firepower is regulated or closed to the control driving element simultaneously.Infrared ray pressure testing and controlling safety valve can also lock or release the pressure cooker handle by steam pressure signal controlling pressure cooker handle safety tenon electromagnet in the output pressure cooker, has avoided in the past directly controlling the malfunctioning of handle locking that the safe tenon of lifting causes because of swill in the pressure cooker stops up and release by vapor pressure in the pressure cooker.Above-mentioned infrared ray work steam discharge detects, the interior actual working pressure of infrared ray pot detects, water level detecting, adopted digital principle, need not mould/analog/digital converter by any complexity, promptly can make things convenient for and export data signal exactly and be connected, each the relevant workpiece in the pressure cooker culinary art be carried out digitlization drive control with single-chip microcomputer parallel digital signal input interface.Compare with adopting silicon pressure sensor or other intelligent pressure sensors, have with low cost, reliable in action, interface is easy, the visual in image advantage such as accurately of pot inner pressure indication.And not with the situation of interface microcontroller under, can also be easily and relevant analog controller spare interface: transfinite as driving gas-cooker gas control valve, water level/deficiency alarm, steam pressure overload alarm device is connected in the pressure cooker with solenoid control pipe gas valve, stepper motor.

W type silicon rubber pot cover sealing ring of the present invention is the improvement to former Y type silicon rubber pot cover sealing ring.In the middle of two arms of the Y type of former Y type silicon rubber pot cover sealing ring, set up a solid circles high density high-tension silicon rubber loop, increase the elastic force of Y type two arms, delay the deformation failure that it causes because of pressurized for a long time.

The handle safe locking device of this pressure cooker adopts the Electromagnetic Control mode.The lower handle of dead-man's handle has a lower handle lock hole, is used to hold dead-man's handle locking bolt, realizes the safety locking of pressure cooker handle.The upper handle of dead-man's handle is provided with dead-man's handle locking bolt, locking bolt tenon (main body is aluminium alloy or other nonmagnetic substances), locking bolt tenon electromagnet, locking bolt driving lever, the locking bolt devices such as depression bar that reset that reset.At inboard about 1/3rd places of upper handle, be provided with a handle locking bolt installing hole, dead-man's handle locking bolt is contained in the locking bolt installing hole, and dead-man's handle locking bolt epimere has a hollow parts, and locking bolt spring is housed, and its top is rotary with locking bolt blind nut.Under locking bolt spring force and the effect of locking bolt self gravitation, promote dead-man's handle locking bolt and lock the lower handle lock hole downwards, stop the unlatching of pressure cooker handle when being used in pressure cooker, steam pressure being arranged.In the appropriate location, the outside of locking bolt installing hole, be provided with locking bolt the reset driving lever and the depression bar installing hole that resets.Reset behind the Pressure-bar spring at the locking bolt of packing into, the locking bolt driving lever that resets is connected to the locking bolt and resets on the depression bar, and the locking bolt of together packing into the reset driving lever and the depression bar installing hole that resets, and is used to open dead-man's handle locking bolt.Be provided with a locking bolt tenon installing hole in the inboard appropriate location of upper handle, locking bolt tenon, locking bolt tenon electromagnet, handle locking bolt tenon iron hoop, locking bolt tenon spring shield, the low elastic spring of locking bolt tenon are housed in the hole, and the aperture screws with locking bolt tenon blind nut.The infrared ray that the safety valve infrared ray receives triode array bottom receives triode and sends one road operating current and directly control dead-man's handle tenon electromagnet by upper handle locking bolt tenon electromagnet circuit input interface: when the safety valve infrared ray receives in the triode array infrared ray of below and receives triode and receive the infrared signal that infrared light emitting diode sends, send high level signal and trigger the interior chain signal SCR control of the safety valve utmost point of the chain signal line output interface of pot internal gas pressure, make its conducting, sending operating current joystick locking bolt tenon electromagnet generates an electromagnetic field, overcome the elastic force of the low elastic spring of locking bolt tenon, realize that dead-man's handle locks the bolt release thereby attract locking bolt tenon iron hoop drive locking bolt tenon to break away from dead-man's handle locking bolt; When the safety valve infrared ray receives triode array infrared ray bottom and receives Guan Wei of triode and receive the infrared signal that infrared light emitting diode sends, send low level signal and give the utmost point of the chain signal silicon controlled control of safety valve in the chain signal line output interface of pot internal gas pressure, controllable silicon ends because of control utmost point low level, locking bolt tenon electromagnet disappears because of dead electricity magnetic field, and locking bolt tenon is locked secure handle locking bolt under the low elastic spring elastic force effect of locking bolt tenon.In the side of upper handle, also be provided with handle locking bolt tenon and force open keyhole, be used for that pressure cooker has a power failure or push locking bolt tenon aside with the handle locking bolt tenon driving lever of forcing to unblank during fault, realize manual release.

Pressure cooker is close to the pot cover face and is provided with one and is slightly less than pot cover, but can hold the anti-overflow basin (being made by aluminium alloy, stainless steel or other temperature-resistant materials) of pressure limiting valve, safety valve, and the basin circle is a little more than pressure limiting valve operating pressure exhaust hole and safety valve safe pressure exhaust hole.When work steam discharge or safe steam discharge, the food liquid that pressure cooker inner high voltage gas is taken out of promptly is housed inside in the anti-overflow basin.Novel anti-overflow basin sphere of action of the present invention is big, guarantees that the liquid of taking out of in pressure limiting valve, the safety valve steam discharge can both effectively be collected.

The spring detector is by placing all kinds of springs of pressure cooker respectively on the detector bracket bar, and detects with serial balancing weight, and the position of indicating on the safety groove according to balancing weight is whether the detected spring of decidable is qualified.

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is the front view of pressure cooker.Wherein (1) represents pressure cooker body; (2) water level automatic detector installing hole in the expression pot; (3) water level automatic detector in the expression pot; (4) vice handle riveted formula contiguous block; (5) the secondary handle of expression pressure cooker; (6) expression pot cover; (7) expression anti-overflow basin; (8) expression infrared ray pressure testing and controlling safety valve; (9) expression push type pressure limiting valve; (10) expression upper handle riveted formula contiguous block; (11) upper handle of expression Electromgnetic seat handle; (12) expression lower handle riveted formula contiguous block; (13) lower handle of expression Electromgnetic seat handle.

Fig. 2 is the pot cover sealing ring.(14) expression W type silicon rubber pot cover sealing ring profile.

Fig. 3 is the vertical view of pressure cooker.(15) the standing screw installing hole of expression Electromgnetic seat handle; (16) standing screw of expression Electromgnetic seat handle; (17) the secondary handle standing screw of expression pressure cooker installing hole; (18) the secondary handle standing screw of expression pressure cooker.

Fig. 4 is a pot interior water level automatic detector front view.(19) expression working power electrode; (20) expression water level detecting electrode; (21) expression anti-dry automatic temperature-adjusting detects controller; (22) expression water level automatic detector main body in teflon insulation is handled pot.

Fig. 5 is a pot interior water level automatic detector side view.(23) water level automatic detector silicone rubber O-ring in the expression pot.

Fig. 6 is a pot interior water level automatic detector cutaway view.(24) water level automatic detector shell in the expression pot; (25) expression adiabatic insulation; (26) water level automatic detector internal power cord and holding wire in the expression pot.

Fig. 7 is a pot interior water level automatic detector rearview.(27) water level automatic detector signal output interface in the expression pot.

Fig. 8 is a fixedly plug of pot interior water level automatic detector installing hole.(28) represent fixedly plug main body; (29) represent fixedly plug silicone rubber O-ring; (30) represent fixedly plug pad; (31) expression hold-down nut.

Fig. 9 is a pot interior water level automatic detector filter mantle front view.(32) expression filter mantle.

Figure 10 is a pot interior water level automatic detector filter mantle side view.

Figure 11 is a pot interior water level automatic detector filter mantle vertical view.

Figure 12 is the pressure cooker body vertical view.(33) water level automatic detector and filter mantle Fixing clamp-seat in the expression riveted formula pot.

Figure 13 is the structural representation of pressure limiting valve.Wherein (34) represent the pressure limiting valve loam cake; (35) expression location lock body; (36) expression location locking bolt; (37) expression location lock spring; (38) expression location locking closure; (39) expression pressure limiting valve loam cake location-plate; (40) expression pressure limiting valve loam cake location-plate hold-down screw; (41) the secondary handle of expression loam cake; (42) the secondary handle set bolt of expression loam cake; (43) expression pressure limiting valve main body positioning tooth; (44) expression pressure is regulated confinement block; (45) expression pressure is regulated the confinement block hold-down screw; (46) expression pressure limiting valve piston body; (47) expression pressure limiting valve piston seal groove; (48) expression silicon rubber pressure limiting valve piston packing; (49) expression pressure limiting valve exhaust hole; (50) expression pressure limiting valve main body; (51) expression piston body sleeve pipe; (52) expression pressure limiting valve piston spring; (53) expression pressure limiting valve loam cake locating slot; (54) expression gasket seal; (55) expression pressure limiting valve air guide screw rod; (56) expression pressure limiting valve Anti-stop cover base; (57) expression hold-down nut; (58) expression Anti-stop cover; (59) expression sensor cluster main body.

Figure 14 is the sensor cluster detail structure chart.Wherein (60) represent pressure limiting valve sensor spring; (61) expression thermistor; (62) expression infrared light emitting diode base; (63) expression infrared light emitting diode; (64) expression infrared light emitting diode seat spring reference column; (65) the expression infrared ray receives the triode array; (66) expression infrared light emitting diode seat guide plate; (67) expression sensor cluster connecting plate; (68) expression sensor cluster connecting plate hold-down screw; (69) expression sensor spring reference column; (70) expression work steam discharge signal line output interface.

Figure 15 is the pressure limiting valve loam cake partial side view among Figure 14.Wherein the transparent indicating window body of operating pressure is set in (71) expression; (72) the transparent indicating window of operating pressure is set in expression; (73) expression pressure/cooking food is selected groove; (74) expression pressure mark groove.

Figure 16 is the safety valve structure schematic diagram.Wherein (75) represent the safety valve main body; (76) expression safety valve exhaust hole; (77) expression gasket seal; (78) expression safety valve air guide screw rod; (79) expression safety valve Anti-stop cover base; (80) expression hold-down nut; (81) expression Anti-stop cover; (82) expression emergency valve piston; (83) expression emergency valve piston seal groove; (84) expression silicon rubber piston packing; (85) expression rounded square piston rod; (86) expression emergency valve piston spring; (87) expression safety valve middle cover; (88) expression silicon rubber safety valve middle cover sealing ring; (89) expression safety valve loam cake; (90) the heat insulation Connection Block of expression infrared light emitting diode; (91) expression infrared light emitting diode; (92) the heat insulation Connection Block hold-down screw of expression infrared light emitting diode; (93) the expression infrared ray receives the triode array; (94) expression pot internal gas pressure signal line output interface; (95) the expression pot chain signal line output interface of internal gas pressure (including the chain signal controllable silicon of safety valve); (96) expression safety valve loam cake hold-down screw.

Figure 17 is the internal anatomy of Figure 16 A-A '.

Figure 18 is the safety valve loam cake partial side view among Figure 16.Wherein (97) represent the transparent indicating window main body of actual pressure in the pot; (98) the transparent indication window of actual pressure in the expression pot; (99) actual pressure indication groove in the expression pot.

Figure 19 is Figure 16 B-B ' profile.(100) expression middle cover plane; (101) expression rounded square piston rod plane.

Figure 20 is an Electromgnetic seat handle arrangement schematic diagram.Wherein (102) represent the lower handle lock hole; (103) expression locking bolt tenon installing hole; (104) expression handle locking bolt tenon; (105) expression handle locking bolt tenon iron hoop; (106) expression locking bolt tenon allocating slot; (107) expression locking bolt tenon blind nut; (108) the low elastic spring of expression locking bolt tenon; (109) expression locking bolt tenon spring shield; (110) expression locking bolt tenon electromagnet; (111) expression locking bolt tenon electromagnet fixing hole; (112) expression locking bolt tenon electromagnet standing screw; (113) expression locking bolt tenon electromagnet circuit input interface; (114) expression handle locking bolt installing hole; (115) expression dead-man's handle locking bolt; (116) expression locking bolt blind nut; (117) expression handle locking bolt spring; (118) the reset driving lever and the depression bar installing hole that resets of expression locking bolt; (119) the expression locking bolt depression bar that resets; (120) the expression locking bolt driving lever that resets; (121) the expression locking bolt driving lever connecting axle that resets; (122) the expression handle locking bolt Pressure-bar spring that resets.

Figure 21 is Figure 20 A-A ' side view.Wherein (102) represent the lower handle lock hole.

Figure 22 represents Figure 20 side view.Wherein (123) expression handle locking bolt tenon is forced open keyhole.

Figure 23 is a handle attachment.Wherein (124) expression handle locking bolt tenon forces to unblank driving lever.

Figure 24 is a holding wire 1.(125) water level automatic detection signal line in the expression pot.

Figure 25 is a holding wire 2.(126) expression pressure limiting valve holding wire.

Figure 26 is a holding wire 3.(127) the chain holding wire of expression pot internal gas pressure.

Figure 27 is a holding wire 4.(128) expression safety valve holding wire.

Figure 28 is the spring detector.(129) expression balancing weight; (130) expression spring shim; (131) represent safe groove; (132) expression detector bracket bar; (133) expression standard spring; (134) expression detector bracket.

Figure 29 is a spring detector vertical view.

Figure 30 is an electrical schematic diagram.

Below by accompanying drawing, the present invention will be further described in conjunction with the embodiments.

This pressure cooker is made up of pressure cooker body (1) and pot cover (6).On pressure cooker body (1), be provided with in the pot handle (13), secondary handle (5) under the water level automatic detector (3), Electromgnetic seat handle; Pot cover (6) is provided with handle (11), anti-overflow basin (7) on W type silicon rubber pot cover sealing ring (14), infrared ray pressure testing and controlling safety valve (8), push type pressure limiting valve (9), the Electromgnetic seat handle.

Water level automatic detector (3) is by working power electrode (19) in the pot, water level detecting electrode (20), the anti-dry automatic temperature-adjusting detects controller (21), water level automatic detector main body (22) in teflon insulation is handled pot, water level automatic detector silicone rubber O-ring (23) in the pot, water level automatic detector shell (24) in the pot, adiabatic insulation (25), water level automatic detector internal power cord and holding wire (26) in the pot, water level automatic detector signal output interface (27) in the pot, fixing plug main body (28), fixing plug silicone rubber O-ring (29), fixing plug pad (30), hold-down nut (31), filter mantle (32), water level automatic detector and filter mantle Fixing clamp-seat (33) are formed in the riveted formula pot.After water level automatic detector (3) in the pot packed into pot interior water level automatic detector silicone rubber O-ring (23), insert water level automatic detector and filter mantle Fixing clamp-seat (33) in the riveted formula pot respectively with filter mantle (32), water level automatic detector silicone rubber O-ring (23) is enclosed within on pot interior water level automatic detector installing hole (2) in the pot, and water level detecting automatic control signal line (125) in the pot is connected on the data signal input interface of single-chip microcomputer (as not using single-chip microcomputer temporarily, also can connect gas valve emergency shutdown signaling interface to upper electrode water receiving position overload alarm device signaling interface to the electrode signal line of extreme lower position) get final product.The water level automatic detector belongs to easily-consumed products can change voluntarily by the user except that silicone rubber O-ring in the pot, and other parts are overall package, and the user can not dismantle.In the user does not use pot for a long time during water level automatic detector (3), also water level automatic detector (3) in the pot and filter mantle (32) can be taken out, fixedly plug main body (28) puts fixedly and is contained on pot interior water level automatic detector installing hole (2) behind the plug silicone rubber O-ring (29) (flat limit up), pack into fixedly plug pad (flat limit is up) (30), and the nut that is locked (31).

Push type pressure limiting valve device is by pressure limiting valve loam cake (34), location lock body (35), location locking bolt (36), pressure limiting valve location lock spring (37), location locking closure (38), pressure limiting valve loam cake location-plate (39), pressure limiting valve loam cake location-plate hold-down screw (40), the secondary handle (41) of loam cake, the secondary handle set bolt (42) of loam cake, pressure limiting valve main body positioning tooth (43), pressure is regulated confinement block (44), pressure is regulated confinement block hold-down screw (45), pressure limiting valve piston body (46), pressure limiting valve piston seal groove (47), silicon rubber pressure limiting valve piston packing (48), pressure limiting valve exhaust hole (49), pressure limiting valve main body (50), piston body sleeve pipe (51), pressure limiting valve piston spring (52), pressure limiting valve loam cake locating slot (53), gasket seal (54), pressure limiting valve air guide screw rod (55), pressure limiting valve Anti-stop cover base (56), hold-down nut (57), Anti-stop cover (58), sensor cluster main body (59), pressure limiting valve sensor spring (60), thermistor (61), infrared light emitting diode base (62), infrared light emitting diode (63), infrared light emitting diode seat spring reference column (64), infrared ray receives triode array (65), infrared light emitting diode seat guide plate (66), sensor cluster connecting plate (67), sensor cluster connecting plate hold-down screw (68), sensor spring reference column (69), work steam discharge signal line output interface (70), set the transparent indicating window main body of operating pressure (71), set the transparent indicating window of operating pressure (72), pressure/cooking food is selected groove (73), pressure mark groove (74) is formed.After pressure limiting valve air guide screw rod (55) connection pressure limiting valve main body (50), one end passes gasket seal (54) and sensor cluster connecting plate (67) installing hole, anti-overflow basin (7) installing hole, pot cover (6) installing hole, put pressure limiting valve Anti-stop cover base (56) back and be fixed on the high-pressure pot cover by hold-down nut (57), Anti-stop cover (58) rotation is fixed on the pressure limiting valve Anti-stop cover base (56).Article two, silicon rubber piston packing (48) is linked in respectively on the twice pressure limiting valve piston seal groove (47) of pressure limiting valve piston body (46), piston body sleeve pipe (51) is screwed onto on the pressure limiting valve piston body (46), piston body sleeve pipe (51) is gone up cover limited valve piston spring (52), pressure limiting valve loam cake (34) is linked on the pressure limiting valve main body (50), and make location lock body (35) align pressure limiting valve main body positioning tooth (43), make pressure limiting valve loam cake location-plate (39) align pressure limiting valve loam cake locating slot (53) and fixing with pressure limiting valve loam cake location-plate hold-down screw (40), to locate locking bolt (36) and pressure limiting valve location lock spring (37) the location lock body (35) of packing into, and screw in location locking closure (38) and to locate lock body (35) rear end.With pack into infrared light emitting diode seat (62) outside of thermistor (61), infrared light emitting diode (63) infrared light emitting diode base (62) inboard of packing into, thereafter infrared light emitting diode base (62), pressure limiting valve sensor spring (60), infrared ray are received triode array (65), work steam discharge signal line output interface (70) the sensor cluster main body (59) of packing into successively, use sensor cluster connecting plate hold-down screw (68) that sensor cluster main body (59) is fixed on the sensor cluster connecting plate (67) at last.

Infrared ray pressure testing and controlling relief valve device is by safety valve main body (75), safety valve exhaust hole (76), gasket seal (77), safety valve air guide screw rod (78), safety valve Anti-stop cover base (79), hold-down nut (80), Anti-stop cover (81), emergency valve piston (82), emergency valve piston seal groove (83), silicon rubber piston packing (84), rounded square piston rod (85), emergency valve piston spring (86), safety valve middle cover (87), silicon rubber middle cover sealing ring (88), safety valve loam cake (89), the heat insulation Connection Block of infrared light emitting diode (90), infrared light emitting diode (91), the heat insulation Connection Block hold-down screw of infrared light emitting diode (92), infrared ray receives triode array (93), pot internal gas pressure signal line output interface (94), the pot chain signal line output interface of internal gas pressure (95) (including the chain signal controllable silicon of safety valve), safety valve loam cake hold-down screw (96), the transparent indicating window main body of actual pressure (97) in the pot, the transparent indication window of actual pressure (98) in the pot, actual pressure indication groove (99) is formed in the pot.Safety valve air guide screw rod (78) is connected safety valve main body (75) back one end pass anti-overflow basin (7) the corresponding mounting hole, pack into gasket seal (77), pass pot cover (6) installing hole, it is fixing tight with hold-down nut (80) to put safety valve Anti-stop cover base (79) back, and Anti-stop cover (81) rotation is packed on the safety valve Anti-stop cover base (79); Emergency valve piston spring (86) packed into rounded square piston rod (85) and with behind latter's precession emergency valve piston (82), two silicon rubber piston packings (84) are packed into the safety valve main body (75) of packing into behind the emergency valve piston seal groove (83); Silicon rubber safety valve middle cover sealing ring (88) is put into safety valve middle cover (87), and with safety valve middle cover (87) precession safety valve main body (75), infrared light emitting diode (91) is packed on the heat insulation Connection Block of infrared light emitting diode (90), and the heat insulation Connection Block of infrared light emitting diode (90) is fixed on the top of rounded square piston rod (85) with the heat insulation Connection Block hold-down screw of infrared light emitting diode (92).Infrared ray is received triode array (93) and pot internal gas pressure signal line output interface (94) and the pot chain signal line output interface of internal gas pressure (95) the safety valve loam cake (89) of packing into successively, and transparent pressure indicating window main body (97) pressing that panel is marked with pot interior actual pressure indication groove (99) is bonded on safety valve loam cake (89) relevant position, thereafter holding wire and the infrared ray with infrared light emitting diode (91) receives triode array (a 93) holding wire access pot internal gas pressure signal line output interface (94), infrared ray is received (93) pipes of triode array output signal line insert the chain signal SCR control of the pot chain signal line output interface of internal gas pressure (95) the internal safety valve utmost point, at last safety valve loam cake (89) is packed into safety valve middle cover (87), and fixing with safety valve loam cake hold-down screw (96).

The Electromgnetic seat handle is by lower handle lock hole (102), locking bolt tenon installing hole (103), handle locking bolt tenon (104), handle locking bolt tenon iron hoop (directly being fixed on when dispatching from the factory on the handle locking bolt tenon (104)) (105), locking bolt tenon allocating slot (106), locking bolt tenon blind nut (107), the low elastic spring (108) of locking bolt tenon, locking bolt tenon spring shield (109), locking bolt tenon electromagnet (110), locking bolt tenon electromagnet fixing hole (111), locking bolt tenon electromagnet standing screw (112), locking bolt tenon electromagnet circuit input interface (113), handle locking bolt installing hole (114), dead-man's handle locking bolt (115), locking bolt blind nut (116), handle locking bolt spring (117), locking bolt the reset driving lever and the depression bar installing hole (118) that resets, the locking bolt depression bar (119) that resets, the locking bolt driving lever (120) that resets, the locking bolt driving lever connecting axle (121) that resets, the handle locking bolt Pressure-bar spring (122) that resets, handle locking bolt tenon is forced open keyhole (123), handle locking bolt tenon forces to unblank driving lever (124), the pot chain holding wire of internal gas pressure (127) is formed.With dead-man's handle lock bolt (115) pack into the locking bolt installing hole (114), reinstall handle locking bolt spring (117), precession locking bolt blind nut (116), again handle is locked bolt tenon (104) pack into the locking bolt tenon installing hole (103), thereafter will lock bolt tenon electromagnet (110) packs into, and locking bolt tenon electromagnet standing screw (112) precession locking bolt tenon electromagnet fixing threaded hole (111), after will locking bolt tenon electromagnet connecting line access locking bolt tenon electromagnet circuit input interface (113), to lock bolt tenon spring shield (109) precession handle locking bolt tenon (104), to lock pack into the rear portion of locking bolt tenon spring shield (109) of the low elastic spring (108) of bolt tenon again, screw with locking bolt tenon blind nut (107) again.Handle locking bolt Pressure-bar spring (122) the locking bolt of packing into that resets resets behind the bottom of the driving lever and depression bar installing hole (118) that reset, to lock bolt driving lever (120) the locking bolt depression bar (119) that resets of packing into that resets, again it is packed into locking bolt the reset driving lever and the depression bar installing hole (118) that resets, and pass and lock bolt and reset and be fixed on the upper handle (11) behind the positioning shaft hole of driving lever (120) with the locking bolt driving lever connecting axle (121) that resets.

The spring detector is made up of balancing weight (balancing weight that corresponding specification is arranged) (129), spring shim (130), safe groove (131), detector bracket bar (132), standard spring (133), detector bracket (134).Pressure limiting valve piston spring (52), pressure limiting valve sensor spring (60), pressure limiting valve location lock spring (37), emergency valve piston spring (86), the low elastic spring (108) of locking bolt tenon, handle locking bolt spring (117) and the handle locking bolt Pressure-bar spring (122) that resets is put into detector bracket bar (132) respectively, put spring shim (130) again, putting balancing weight (129) at last into, is whether the decidable springiness can qualified according to the position of balancing weight (129) on safety groove (131).Standard spring (133) is used for detecting with pressure limiting valve piston spring (52) and emergency valve piston spring (86) contrast, also can meet an urgent need in case of necessity and replace above-mentioned two kinds of springs.By regularly or at any time detecting all kinds of springs, can in time find the spring aging conditions, and in time be replaced with qualified spring voluntarily according to circumstances.

Embodiment: stew the Pig spareribs group food.

At first, water level automatic detector (3) in the pot is inserted water level automatic detector and filter mantle Fixing clamp-seat (33) in the riveted formula pot, again filter mantle (32) is also inserted water level automatic detector and filter mantle Fixing clamp-seat (33) in the riveted formula pot, water level automatic detector holding wire (125) in the pot is inserted water level automatic detector signal output interface (27) in the pot, and the other end inserts single-chip microcomputer parallel signal input interface.Thereafter, main ingredient got ready cook, add suitable quantity of water and flavouring, high-pressure pot cover closes, upper handle (11) fastened to downwards on the pressure cooker body and rotate to left align with lower handle (13) and hear " click clatter " one, the expression upper handle has screwed and has put in place, and dead-man's handle locking bolt (115) has been locked lower handle lock hole (102); Pressure/cooking food is outwards stirred and pressed to pressure limiting valve loam cake location locking bolt (36) selects " chop " graticule in the groove (73) to align with pressure limiting valve body mark groove (74), unclamp location locking bolt (36), locate locking bolt (36) and under the elastic force of pressure limiting valve location lock spring (37) promotes, mesh with pressure limiting valve main body positioning tooth (43).Thereafter, connect pot chain signal line output interface of internal gas pressure (95) and locking bolt tenon electromagnet incoming line interface (113) with the chain holding wire of pot internal gas pressure (127), and, be connected with the parallel input port of single-chip microcomputer respectively behind safety valve holding wire (128) the insertion safety valve pot internal gas pressure signal line output interface (94) with pressure limiting valve holding wire (126) insertion work steam discharge signal line output interface (70).If water level superelevation or low excessively in the pressure cooker, the interior water level automatic detector (3) of pot will be sent corresponding signal water level automatic detector holding wire (125) notice single-chip microcomputer in pot and make corresponding warning and control pipeline burnt gas valve or gas-cooker gas lockout valve by force, and water level does not transfinite (water level higher limit and lower limit can also can be provided with from the single-chip microcomputer end by the user in use by manufacturer is default), and then Single-chip Controlling is opened corresponding gas pipeline switch (but the gas-cooker manual firing also can be set to regularly or pass through phone from the single-chip microcomputer end, network, Remote Control Automatic igniting such as infrared ray).

During culinary art, when vapor pressure in the pressure cooker does not raise as yet, when a pipe of safety valve infrared ray reception triode array (93) receives the infrared signal of infrared light emitting diode (91), the output high level makes the controllable silicon conducting for the chain signal SCR control of the pot chain signal line output interface of internal gas pressure (95) the internal safety valve utmost point, send operating current control locking bolt tenon electromagnet (110) by the chain holding wire of pot internal gas pressure (127) and produce magnetic field, overcome the elastic force of the low elastic spring (108) of locking bolt tenon, attract handle locking bolt tenon iron hoop (105) to drive handle locking bolt tenon (104) and withdraw from dead-man's handle locking bolt (115), the pressure cooker upper handle is not by double locking, reset behind the depression bar (118) when pressing the locking bolt, to drive the locking bolt driving lever (120) that resets and stir dead-man's handle locking bolt (115) and rise to and break away from lower handle lock hole (102), upper handle (with the pot cover interlock) just can free folding.

When steam pressure in the pressure cooker raises, the corresponding rising of emergency valve piston (82), driving infrared light emitting diode (91) raises, infrared ray receives (93) infrared receiver tubes of triode array and does not receive infrared signal, be that the output low level signal is given the chain signal SCR control of the pot chain signal line output interface of internal gas pressure (95) the internal safety valve utmost point, controllable silicon ends, the electric current supply of the pot chain holding wire of internal gas pressure (127) interrupt latch bolt tenon electromagnet (110), locking bolt tenon electromagnet (110) loses electromagnetic field, the elastic force driving handle locking bolt tenon (104) of the low elastic spring (108) of locking bolt tenon pins dead-man's handle locking bolt (115), the pressure cooker upper handle is by double locking, even down by the locking bolt depression bar (119) that resets, upper handle also can not free folding (promptly pinning pot cover), thereby realize pressure cooker handle double insurance, make it not because of the release that resets of fault or other unexpected factor.

Vapor pressure continues to raise in pressure cooker, the also corresponding rising of emergency valve piston (82), driving infrared light emitting diode (91) continues to raise, infrared ray receives each infrared ray in the triode array (93) and receives triode because of the corresponding generation high level of difference and the low level of vertical height separately, be transferred to after single-chip microcomputer does respective handling through safety valve holding wire (128), can regulate the gas supply amount of stepper motor pipe gas valve or electromagnetic pipeline gas valve adjusting gas-cooker by respective drive element, also can directly regulate gas-cooker gas valve control flame size to adapt to the culinary art needs by the control step motor through gear drive.When vapor pressure in the pressure cooker reaches the operating pressure of setting (being the pressure of " chop " groove mark in this example), under pressure limiting valve piston body (46) vapor pressure in pressure cooker promotes, overcome the elastic force that pressure limiting valve piston spring (52) is set, rising also surpasses pressure limiting valve exhaust hole (49), high steam in the pressure cooker is outside pressure limiting valve exhaust hole (49) is discharged pressure cooker, thermistor (61) is experienced heat, sends pressure limiting valve steam discharge signal by pressure limiting valve holding wire (126) and gives single-chip microcomputer; Simultaneously, it is corresponding mobile that the displacement that infrared light emitting diode base (62) causes because of pressure limiting valve work exhaust steam pressure changes drives infrared light emitting diode (63), infrared ray receives the infrared ray that is shone by infrared light emitting diode (63) in the triode array (65) and receives triode output data signal 1, the infrared ray that is shone by infrared light emitting diode (63) does not receive triode output digital signaling zero, thereby forms the real-time parallel data signal and export to single-chip microcomputer by pressure limiting valve holding wire (126); And emergency valve piston (82) also rises because of the elastic force overcome emergency valve piston spring (86) that raises of steam pressure in the pressure cooker, thereby driving infrared light emitting diode (91) raises, infrared ray receives whether each infrared ray reception triode produces data signal " 1 " or " 0 " respectively because of receiving infrared signal in the triode array (93), and delivers to single-chip microcomputer through safety valve holding wire (128); Water level automatic detector (3) is also sent in the pressure cooker in the water level signal and pressure cooker actual temperature signal to single-chip microcomputer by a water level automatic detector holding wire (125) in the pot at any time in the pot, the above-mentioned several signals of single-chip microcomputer analysis-by-synthesis can meticulous adjusting control driving element (the ratio adjusting of gas valve break-make, burnt gas valve open degree size or gas-cooker combustion gas and air etc.).Exempt from the steam discharge culinary art as need and (can preserve food nutrition better, reduce environmental pollution) time, can the heat power of gas burner scope be adjusted in pressure limiting valve thermistor (61) automatically by single-chip microcomputer and not detect pressure cooker steam discharge signal, and the safety valve infrared ray receive actual steam pressure signal in the pressure cooker of triode array (93) output the operating pressure of approaching setting (sets from the Single-chip Controlling end: actual steam pressure does not reach setting pressure and then controls driving element and strengthen firepower in the pressure cooker, thermistor detect steam discharge signal or the interior steam pressure of pressure cooker reach or be higher than setting pressure then reduce firepower).When the operating pressure that reaches setting and remain to the default time (setting at the single-chip microcomputer end: receive triode array (93) from the safety valve infrared ray and export corresponding actual working pressure signal for the first time and pick up counting), single-chip microcomputer can send the drive control signal of cutting out valve of gas pipeline or gas-cooker burnt gas valve, sends voice or acousto-optic alert signal (also can divide the different pressures time period accurately to control) simultaneously.When the safety valve infrared ray receives triode array (93) and detects that actual steam pressure reaches safe pressure in the pressure cooker, the silicon rubber piston packing (84) of emergency valve piston (82) bottom surpasses the height of safety valve exhaust hole (76), and the high steam in the pressure cooker is by the urgent steam discharge pressure release of safety valve exhaust hole (76) (this moment, pressure limiting valve was also at steam discharge); The infrared ray reception triode (setting when dispatching from the factory according to the pressure cooker performance indications) corresponding to the safe pressure position receives the infrared signal that infrared light emitting diode sends in the safety valve infrared ray reception triode array (93) simultaneously, the safety valve infrared ray receives triode array (93) and sends corresponding digital signal notice Single-chip Controlling driving element emergency cut-off valve of gas pipeline or gas-cooker burnt gas valve, the pressure cooker explosion danger that prevents lasting firepower from causing steam pressure continuation rising in the pressure cooker and cause sends voice or sound and light alarm simultaneously.

When water level in the pressure cooker is lower than lower limit (water level lower limit pressure cooker in manually is set when pre-if user uses when dispatching from the factory), a water level automatic detector (3) is sent corresponding parallel digital signal and is notified single-chip microcomputer in the pot; Simultaneously, the anti-dry automatic temperature-adjusting detects controller (21) and sends the interior real time temperature signal of pressure cooker to single-chip microcomputer in the pot, pipeline burnt gas valve or gas-cooker burnt gas valve are regulated or closed to output respective drive signal control respective drive element after the above-mentioned information of single-chip microcomputer analysis-by-synthesis, to avoid in the pressure cooker no-water dry combustion to cause food to burn and pressure cooker is crossed cause thermal damage, send voice or sound and light alarm simultaneously.

When chop in the pressure cooker do ripe after, still higher because of vapor pressure in the pressure cooker, handle still pins.Steam pressure Yin Wendu descends or pressure limiting valve loam cake appropriateness is heightened the acceleration exhaust in pressure cooker, make when steam pressure drops to safety value in the pressure cooker, emergency valve piston (82) is displaced downwardly to the bottom under the elastic force effect of the gravity of own wt and emergency valve piston spring (86), drive infrared light emitting diode (91) and move down into the end, after the pipe that the safety valve infrared ray receives triode array (93) receives the infrared signal that infrared light emitting diode (91) launches, the output high level signal is given the chain signal SCR control of the pot chain signal line output interface of internal gas pressure (95) the internal safety valve utmost point, the controllable silicon conducting is also sent operating current control locking bolt tenon electromagnet (110) by the pot chain holding wire of internal gas pressure (127) and is generated an electromagnetic field, overcome the elastic force of the low elastic spring (108) of locking bolt tenon, attract handle locking bolt tenon iron hoop (105) to drive handle locking bolt tenon (104) and withdraw from dead-man's handle locking bolt (115), the pressure cooker upper handle is not by double locking, reset behind the depression bar (119) when pressing the locking bolt, to drive the locking bolt driving lever (120) that resets stirs dead-man's handle locking bolt (115) and rises, after dead-man's handle locking bolt (115) broke away from lower handle lock hole (102), upper handle (with the pot cover interlock) again can free folding.

As because of having a power failure or fault causes dead-man's handle locking bolt tenon (104) can not release the time, should observe the transparent indication window of actual pressure (98) in the safety valve pot, confirm (significant caution sign must be set on high-pressure pot cover after steam pressure has dropped to safety value in the pressure cooker, " be sure not to open by force high-pressure pot cover ") without confirming that steam pressure has dropped to safety value in the pressure cooker, handle can be locked the bolt tenon driving lever (124) of forcing to unblank inserts handle locking bolt tenon and forces open keyhole (123), push handle locking bolt tenon (104) aside, thereafter press the locking bolt depression bar (119) that resets, upper handle (with the pot cover interlock) just can free folding.

Claims (7)

1, a kind of multisensor revolving type is controlled pressure cooker automatically, it includes pressure cooker body (1), pot cover (6), water level automatic detector (3) in the pot, anti-overflow basin (7), infrared ray pressure testing and controlling safety valve (8), push type pressure limiting valve (9), electromagnetism upper handle (11), lower handle (13), W type silicon rubber pot cover sealing ring (14) and spring detector, it is characterized in that pressure limiting valve is the spring push type, the pressure setting range is by pressure limiting valve main body positioning tooth (43), pressure is regulated confinement block (44), pressure limiting valve loam cake location-plate (39), pressure limiting valve loam cake locating slot (53) limits; Pressure is regulated by the setting transparent indicating window main body of operating pressure (71), sets the transparent indicating window of operating pressure (72), pressure/cooking food selection groove (73), pressure mark groove (74), locatees lock body (35), location locking bolt (36), locatees lock spring (37), is located locking closure (38) and pressure limiting valve main body positioning tooth (43) setting; The work steam discharge is controlled automatically by pressure limiting valve exhaust hole (49), sensor cluster main body (59), sensor spring (60), thermistor (61), infrared light emitting diode base (62), infrared light emitting diode (63), infrared ray receives triode array (65), sensor cluster connecting plate (67), work steam discharge signal line output interface (70), water level automatic detection signal line (125) in the pot, pressure limiting valve holding wire compositions such as (126), the signal of telecommunication of its output can be controlled the analog device interface with single-chip microcomputer or other electronics easily automatically, thereby the work of control related drive element realizes the automatic control to pressure cooker.

2, automatically control pressure cooker according to the described multisensor revolving type of claim 1, it is characterized in that pot interior water level automatic detector (3) is by water level automatic detector main body (22) in teflon insulation is handled pot, working power electrode (19), water level detecting electrode (number of poles is identical with the figure place of single-chip microcomputer) (20), anti-dry automatic temperature-adjusting detector (21), water level automatic detector silicone rubber O-ring (23) in the pot, water level automatic detector shell (24) in the pot, adiabatic insulation (25), water level automatic detector internal power cord and holding wire (26) in the pot, water level automatic detector signal output interface (27) is formed in the pot, except that silicone rubber O-ring is the self-mountable ﹠ dismountuble easily-consumed products, other elements are by the fixing encapsulation of producer, wherein, working power electrode (19) is contained in pot lower end of interior water level automatic detector main body (22), with the bottom of a pan one small distance is arranged very much, water level detecting electrode (20) is one group a plurality of (identical with the single-chip microcomputer figure place that is adopted), adopt vertical evenly the distribution or uneven distribution (upward dredging close down), the parallel digital signal or the water level of water level reaches/analog signal of lower limit in the exportable pressure cooker of water level signal electrode, is used for realizing the accurately control in real time of igniting automatically and firepower size with single-chip microcomputer or simulation electronic control device interface to drive pipeline burnt gas valve or gas-cooker burnt gas valve.

3, automatically control pressure cooker according to the described multisensor revolving type of claim 1, it is characterized in that on the emergency valve piston (82) in the infrared ray pressure testing and controlling safety valve (8) twice piston seal groove (83) being arranged, silicon rubber piston packing (84), silicon rubber safety valve middle cover sealing ring (88), guarantee that pot inner high voltage gas can not scurry into safety valve loam cake (89) in emergency valve piston (82) moves, safety valve exhaust hole (76) is at the middle part of safety valve main body (75), when gas in the pressure cooker when safe pressure is following, emergency valve piston (82) lifting with gas pressure size in the pressure cooker, but the lower seal circle height of silicon rubber piston packing (84) does not surpass safety valve exhaust hole (76), infrared ray pressure testing and controlling safety valve (8) can not discharged gas, have only when gas pressure meets or exceeds safe pressure in the pressure cooker, emergency valve piston (82) rising causes the lower seal circle height of silicon rubber piston packing (84) to surpass safety valve exhaust hole (76), and pressure cooker inner high voltage gas could pass through safety valve exhaust hole (76) and discharge the outer realization of a pot emergency decompression; There are infrared light emitting diode (91) and infrared ray to receive triode array (93) and pot internal gas pressure signal line output interface (94) in the safety valve loam cake (89), the pot chain signal line output interface of internal gas pressure (95) (in the chain signal controllable silicon of safety valve is arranged), safety valve holding wire (128), be used for indicating in real time in the pressure cooker actual working pressure and control firepower and regulate and (for example control solenoid gas valve, heat power of gas burner stepper motor control valve, electric pressure cooker thyristor supply power governor etc.), by adopting rounded square piston rod (85), infrared light emitting diode (91) can correctly be located, guarantee that infrared ray receives the accurately infrared signal that sends of receiving infrared-ray emitting diode (91) of triode array (93), and sealing function by silicon rubber safety valve middle cover sealing ring (88), prevent that effectively the high steam in the pressure cooker from scurrying into safety valve loam cake (89), avoid it to influence the operate as normal of associated electronic components, when not using electronic signal, also can judge the actual pressure of steam in the pressure cooker by directly observing the position of rounded square piston rod (85) with respect to actual pressure indication groove (99) in the pot on the transparent indication window of actual pressure in the pot (98).

4, automatically control pressure cooker according to the described multisensor revolving type of claim 1, it is characterized in that the Electromgnetic seat handle is by upper handle (11), lower handle (13), lower handle lock hole (102), dead-man's handle locking bolt (115), locking bolt tenon electromagnet (110), handle locking bolt tenon (aluminium alloy or other non-magnetic materials) (104), handle locking bolt tenon iron hoop (105) (being fixed on during product export on the handle locking bolt tenon), the low elastic spring (108) of handle locking bolt tenon, the locking bolt driving lever (120) that resets, handle locking bolt tenon is forced open keyhole (123), handle locking bolt tenon forces to unblank driving lever (124), the locking bolt depression bar (119) that resets, the handle locking bolt Pressure-bar spring (122) that resets, locking bolt tenon electromagnet circuit input interface (113), the chain holding wire of pot internal gas pressure compositions such as (127), during culinary art, when vapor pressure in the pressure cooker does not raise as yet, when a pipe of safety valve infrared ray reception triode array (93) bottom receives the infrared signal of infrared light emitting diode (91), the output high level makes the controllable silicon conducting for the chain signal SCR control of the pot chain signal line output interface of internal gas pressure (95) the internal safety valve utmost point, sending operating current control locking bolt tenon electromagnet (110) by the chain holding wire of pot internal gas pressure (127) generates an electromagnetic field, overcome the elastic force of the low elastic spring (108) of handle locking bolt tenon, attract handle locking bolt tenon iron hoop (105) to drive handle locking bolt tenon (104) and withdraw from dead-man's handle locking bolt (115), the pressure cooker upper handle is not by double locking, reset behind the depression bar (119) when pressing the locking bolt, to drive the locking bolt driving lever (120) that resets and stir dead-man's handle locking bolt (115) and rise to and break away from lower handle lock hole (102), upper handle just can free folding; When steam pressure in the pressure cooker raises, the corresponding rising of emergency valve piston (82), driving infrared light emitting diode (91) raises, infrared ray receives (93) infrared receiver tubes of triode array and does not receive infrared signal, be that the output low level signal is given the chain signal SCR control of the safety valve utmost point in the pot chain signal line output interface of internal gas pressure (95), controllable silicon ends, the electric current supply of the pot chain holding wire of internal gas pressure (127) interrupt latch bolt tenon electromagnet (110), locking bolt tenon electromagnet (110) loses electromagnetic field, the elastic force driving handle locking bolt tenon (104) of the low elastic spring (108) of locking bolt tenon pins dead-man's handle locking bolt (115), the pressure cooker upper handle is by double locking, even press the locking bolt depression bar (119) that resets, upper handle also can not free folding, thereby realize pressure cooker handle double insurance, make it not because of the release that resets of fault or other unexpected factor.

5, control pressure cooker automatically according to the described multisensor revolving type of claim 1, it is characterized in that anti-overflow basin (7) basin circle height is a little more than pressure limiting valve exhaust hole (49) and safety valve exhaust hole (76), diameter is slightly less than pot cover (6), but held infrared ray pressure testing and controlling safety valve (8), push type pressure limiting valve (9), the food liquid that the interior gases at high pressure of pressure cooker that pressure limiting valve exhaust hole (49) and safety valve exhaust hole (76) are discharged are taken out of can be held by anti-overflow basin (7).

6, control pressure cooker automatically according to the described multisensor revolving type of claim 1, it is characterized in that W type silicon rubber pot cover sealing ring (14) outside is vertical plane, the inboard is the W type, it is 75 ° secondary lobe that an opening angle is respectively arranged up and down, the cylindric solid rim of the high-tension that it is gross thickness 1/3 that there is a diameter centre, can increase the sealing elastic force of silicone rubber O-ring, delay its ageing failure.

7, control pressure cooker automatically according to the described multisensor revolving type of claim 1, the bottom that it is characterized in that the spring detector is detector bracket (134), there is the detector bracket bar (132) of a column in its central authorities, and detector bracket bar (132) is marked with performance qualified district mark and the defective district mark that safe groove (131) is various springs; Spring shim (130) external diameter greater than or approximate the balancing weight diameter, there is a circular hole at its center, diameter is greater than the diameter of detector bracket; There is a circular hole at the center of balancing weight (129), and its diameter is greater than the diameter of detector bracket; Standard spring (133) is used for contrast and detects pressure limiting valve piston spring (52) and emergency valve piston spring (86), replaceable in case of necessity above-mentioned two kinds of springs; Utilize balancing weight (129), spring shim (130), standard spring (133) and detector bracket bar (132), whether the elastic force that can detect all kinds of springs of this pressure cooker easily is qualified.

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