CN2193111Y - High pressure electric rice cooker - Google Patents
High pressure electric rice cooker Download PDFInfo
- Publication number
- CN2193111Y CN2193111Y CN 94209400 CN94209400U CN2193111Y CN 2193111 Y CN2193111 Y CN 2193111Y CN 94209400 CN94209400 CN 94209400 CN 94209400 U CN94209400 U CN 94209400U CN 2193111 Y CN2193111 Y CN 2193111Y
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- thermal switch
- relay
- cooker
- high pressure
- pressure
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Abstract
The utility model relates to a high pressure electric rice cooker which combines a conventional electric rice cooker and a pressure cooker, which comprises an insulation cover 1, a pressure cooker 2, an insulation casing 3, a circuit board 4, a metal circular ring 5, a pressure valve 6, a hasp 7, a buckling hook 8, an electric resistance furnace 9, a power bakelite plug socket 10, a thermal relay 11 (K2), a thermal switch 12, a connecting rod 13 of the thermal switch, an electric contact 14 of the thermal switch, a power plug 15 and a reset switch 16. After the high pressure electric rice cooker is switched on, the pressure valve is impulsed by high-pressure steam in the pressure cooker, and a microswitch is actuated to cut off power supply when temperature is increased to a certain degree. When the temperature is reduced, the power is switched on by the utilization of the action of the thermal relay, and high temperature and high-pressure state in the cooker is ensured. The utility model has better insulation performance than the present electric rice cookers.
Description
The utility model relates to the family expenses electric cooking appliance, is specifically related to the high pressure electric cooker of conventional electric cooker of a kind of combination and pressure cooker.
Existing electric cooker does not mostly have high pressure, only limits to dry cook food, has promptly lost the function of automatic switch for the soup group food; And the internal temperature of this electric cooker is subject to the water vapor temperature, can only remain on below 100 °, and for the low pressure highlands of rarefaction of air, the water vapor temperature is too low and can not boil food.And the pressure cooker of prior art is because high pressure energy makes generation high temperature in the pot; But this pressure cooker does not have heat-insulation layer, can lose excessive power in colder area, and simultaneously, pressure cooker can not realize boiling the electric automatic control of stewing food.Do not see a kind of prior art electric cooker and pressure cooker shortcoming and have the high pressure electric cooker of advantage separately simultaneously separately that overcomes as yet.
The purpose of this utility model is to provide a kind of not only can be operated in high pressure, but also can be operated in the high pressure electric cooker of normal pressure.This high pressure electric cooker is after connecting power supply, when temperature reaches certain limit, the microswitch that it forms by the impulsion of the high steam in pressure cooker pressure valve is cut off the electricity supply, after temperature reduces, then utilize the action that is installed in the electrothermal relay on the resistance furnace to connect power supply and be in high-temperature high-pressure state to guarantee to remain in the pot; And have than the better heat-insulating property of existing electric cooker.
The purpose of this utility model is to realize like this, construct a kind of high pressure electric cooker, comprise: there is the insulation cover 1 of a circular hole centre, the pressure cooker device of forming by pressure cooker body 21 and high-pressure pot cover 22 2, the lagging casing 3 that can hold described pressure cooker body 21, be located at the circuit board 4 of described lagging casing 3 bottoms, metal garden ring 5, be placed on the described high-pressure pot cover 22 and with the relative pressure valve 6 of described insulation cover 1 circular hole, hasp 7, take and collude 8, be located at the resistance furnace 9 of described pressure cooker body 2 bottoms, power supply bakelite receptacle 10, electrothermal relay 11(K2), thermal switch 12, thermal switch connecting rod 13, thermal switch electrical contact 14, attaching plug 15, reset switch 16, adopt hinge to be connected between described insulation cover 1 and the described lagging casing 3, described hasp 7 is located on the avris relative with described hinge side of described insulation cover 1, described taking colluded 8 and is located on described lagging casing 3 and described and the insulation cover 1 on the hasp 7 installation position relative positions, described power supply bakelite receptacle 10 is located at the outside below of described lagging casing 3, described electrothermal relay 11 is located at the bottom of described resistance furnace 9, described thermal switch 12 is located in the circular hole of described resistance furnace 9 centres, described thermal switch connecting rod 13 is connected between described thermal switch 12 and the described manual reset switch 16, and described thermal switch electrical contact 14 is located on the described thermal switch connecting rod 13.
High pressure electric cooker of the present utility model, it is characterized in that, compositions such as the handle 701 that described hasp 7 is made of metal, rotational lantern ring 702, screw 703, fixed support 704, rotating fulcrum 705, described hasp 7 is fixed on the described insulation cover 1 by described screw 703, described hasp 7 103 directly is connected with the annulus at insulation cover top by going between, described rotating fulcrum 705 is located on the described fixed support 704, and the rotating fulcrum of described rotational lantern ring 702 is located on the described handle 701.
High pressure electric cooker of the present utility model, its feature also is, described insulation cover 1 comprises: solidify lid 101 that the centre that forms is provided with a circular hole, metal ring 102 in the circular hole that is located at described lid 101, be located at a nut 104 on described lid 101 edges, connect the lead 103 of described annulus 102 and described nut 104 with the organic plastics powder hot-pressing of partiting thermal insulation, described annulus 102, lead 103, nut 104 are fixed on when hot pressing in the described lid 101.
High pressure electric cooker of the present utility model, it is characterized in that, described taking colluded 8 and is made up of two parallel metal hook 801, insulating trip 803, insulation sleeve 804, rivet 805 and two conducting strips 806 that are provided with, described hook 801 is fixed on described lagging casing 802(3 by rivet 805 and conducting strip 806) on, described two hooks 801 by insulating trip 803, insulation sleeve 804 mutually insulateds and with described lagging casing 3 insulation, described two hooks 801 communicate with described two conducting strips 806 respectively.
High pressure electric cooker of the present utility model, it is characterized in that, described circuit board 4 adopts the switch element of triode V as control loop, the base stage of described triode V and the control loop between the emitter stage are by electrothermal relay 11(K2), normally opened contact K1-2 and normally-closed contact K1-3, the thermal switch 14(K3 of relay K 1) form, an end and the lagging casing of the movable contact spring of the movable contact spring of described electrothermal relay K2 and described thermal switch 14 and the normally-closed contact K1-3 of described relay K 1 communicate; The other end of described electrothermal relay K2 is connected with the normally opened contact K1-2 of described relay K 1, and links to each other with the base stage of described triode by resistance 2R; The other end of described relay K 1 normally opened contact K1-2 links to each other with the normally-closed contact of described thermal switch K3, and the other end of the normally closed interlock K1-3 of described relay K 1 links to each other with described thermal switch 14 normally open contacts, and is connected with the emitter stage of described triode V.
High pressure electric cooker of the present utility model is characterized in that, described described two conducting strips 806 that collude in 8 taken are connected in the described circuit board 4 power switch 2K as the high pressure electric cooker by two leads 807.
High pressure electric cooker of the present utility model both can be used as common electric cooker usefulness, can be used as the electric heating pressure cooker again and used, and had solved the auto-programming of HTHP maintenance process.
In conjunction with the accompanying drawings, further specify embodiment of the present utility model.In the accompanying drawing:
Fig. 1 is the structural representation of the utility model high pressure electric cooker;
Fig. 2 is the structural representation of insulation cover in the utility model high pressure electric cooker;
Fig. 3 is the hasp structure schematic diagram in the utility model high pressure electric cooker;
Fig. 4 takes the hooking structure schematic diagram in the utility model high pressure electric cooker;
Fig. 5 is the electrical installation schematic diagram in the utility model high pressure electric cooker;
Fig. 6 is the characteristic schematic diagram of the utility model high pressure electric cooker kettle temperature.
As shown in Figure 1, the utility model high pressure electric cooker is by insulation cover 1, pressure cooker 2, lagging casing 3, circuit board 4, metal garden ring 5, press valve 6, hasp 7, take and collude 8, resistance furnace 9, power supply bakelite receptacle 10, electrothermal relay 11(K2), thermal switch 12, thermal switch connecting rod 13, thermal switch electrical contact 14, attaching plug 15, reset switch 16 compositions such as grade, adopt hinge to be connected between described insulation cover 1 and the described lagging casing 3, described metal garden ring 5 is located in the circular hole of described insulation cover 1 centre, pressure cooker 2 is placed in the lagging casing 3, after covering insulation cover 1, hasp 7 buckle take collude 8 after, annulus 5(102) aperture and must guarantee that with the relative distance relation of pressing valve 6 annulus 5 can not contact with pressure valve 6, have only after producing high steam impulsion pressure valve in the pressure cooker, press valve 6 must be connected with annulus 5 again, they are equivalent to the effect of switch S in Fig. 5 circuit here.
Electrothermal relay 11 is that the bimetal leaf that adopts the pressing of copper iron to form is made, because copper and the hot coefficient of dilatation of iron is different, thereby heated bending, available screw directly is fixed on electrothermal relay on the resistance furnace 9, must guarantee after the installation that two contact chips of electrothermal relay 11 disconnect under the state of cooling, after being heated, probably when water temperature in the pressure cooker during at 80 ℃, electrothermal relay 11 bendings, two contact chips are communicated with, can automatically restore to off-state again after the cooling, be equivalent to the effect of electrothermal relay K2 among Fig. 4.
What thermal switch 12 adopted is thermal switch commonly used in the general electric cooker, and this thermal switch is installed in the middle circular hole of resistance furnace, can beat automatically after being heated.Thermal switch 12 is fixed on the connecting rod 13, and the other end of this connecting rod is then directly drawn, and is fixed on the power supply bakelite receptacle, has fixed a cover normally-open normally-close change-over switch 14 simultaneously on connecting rod 13.The thermal switch work characteristics is the same with thermal switch in the general electric cooker, when resistance furnace is heated to a certain degree, greatly when 160 ℃ of left and right sides, thermal switch just can be beated, the result that beats is by being fixed on the connecting rod on the thermal switch, the normally-open normally-close contact that is fixed on the connecting rod is changed, and after the high pressure kettle temperature reduced, thermal switch can not restore.Be fixed at connecting rod on that end of supply socket bakelite, manual reset switch F is housed, only press reset switch and just can restore, they play the thermal switch K3 in Fig. 4 circuit.
In Fig. 3, be installed in hasp 7 on the insulation cover 1 by handle 701, rotational lantern ring 702, screw 703, fixed support 704, rotating fulcrum 705 compositions such as grade, whole hasp all adopts metal to make, and be fixed on the insulation cover 1 by screw 703, like this, hasp 7 103 directly is connected with the annulus of tops by going between, and handle can be rotated, its rotating fulcrum 705 is on fixed support 704, and the rotating fulcrum of rotational lantern ring 702 is located on the handle 701, when handle 701 rotated around the rotating fulcrum 705 on the fixed support 704, rotational lantern ring 702 can be made rectilinear motion up and down.
Figure 4 illustrates two hooks 801 that are fixed on the lagging casing 3, they are respectively by insulating spacer 803 and insulation sleeve 804 and lagging casing 3 insulation, in lagging casing 3 the insides, two conducting strips 806 are housed respectively, and with rivet 805 hook 801 and conducting strip 806 are fixed on the lagging casing 3, and and casing insulation; Two conducting strips 806 are drawn with two leads respectively and are sent on the circuit board 4.
In conjunction with Fig. 3 and Fig. 4, can see, when the rotational lantern ring among Fig. 3 702 moves up and down, can fasten two hooks 801 among Fig. 4 tightly at the top dead-centre of rotational lantern ring 702, these two hooks can be communicated with, be connected with annulus on the insulation cover by hasp simultaneously, its effect is equivalent to the effect that contact L4 in Fig. 5 circuit and contact L5 are communicated with switch 2K.
In Fig. 1, the metal part of lagging casing 3, pressure cooker 2, the pressure valve 6 of pressure cooker, resistance furnace 9, electrothermal relay 11(K2) movable contact, thermal switch 12 and thermal switch connecting rod 13 and connecting rod on the moving part of electric contact point in installing and using, must reliably be communicated with, they are equivalent to the ground connection in Fig. 5 circuit, i.e. D point position.
Further specify the circuit theory diagrams among Fig. 5, the element among the figure in the frame of broken lines all is installed on the circuit board 4, draws 8 lines (label is L1, L2, L3, L4, L5, L6, L7, L8) altogether and communicates with external circuit.From scheming as seen, this is a general on-off circuit, and external 220V AC power is by after transformer transformation, rectification and the filtering, for entire circuit partly provides working power, among the figure: R
ZIt is load, just be used for to whole cooker heating, be installed in the resistance furnace and with the resistance wire of resistance furnace metal SI semi-insulation, receive respectively on the normally opened contact K1-1 of power supply and relay K 1 at its two ends, the other end of this normally opened contact K1-1 is received the other end of power supply, like this, has only when relay K 1 adhesive resistance wire R
ZJust can pass to electric current and produce heat, the closing and divide the conducting of depending on triode V still to end of relay K 1, when triode V conducting, relay K 1 adhesive, load resistance R
ZEnergising, the resistance furnace heating; Otherwise V ends when triode, and relay K 1 disconnects, and resistance furnace does not just generate heat yet.
From Fig. 5 as seen, have only when L4, L5 connect with switch 2K, Fig. 4 circuit could operate as normal.The duty of triode V depends on the height of A point current potential.Between 2 of A, E is to form with a series of on-off switch contact combinations.When the A point was communicated with the E point, 2 of A, E were exactly equipotential, and the base stage b of triode V and the voltage between the emitter e are zero, and triode V is in cut-off state.When 2 of A, E disconnected, A, E point-to-point transmission just had potential difference, just have electric current to pass through between the base stage b of triode V and the emitter e, and like this, triode V is in conducting state.
On off state 2 of A, E is such, K1-2 is the normally opened contact of relay K 1, K1-3 is the normally-closed contact of relay K 1, K2 is an electrothermal relay, this electrothermal relay K2 disconnects when cold conditions, closure when being heated to a certain degree (being generally about 80 ℃) can return to original off-state from dynamic elasticity after the cooling.K3 is a thermal switch, when cold conditions, go up logical disconnected down, just label L6 communicates with label L8, and label L6 and label L5 disconnect, after being heated to a certain degree (being generally 160 ℃), thermal switch K3 just jumps to another kind of duty, promptly go up disconnected logical down state, promptly label L6 links to each other with label L5, and label L6 and label L8 disconnect.After thermal switch cooling, this switch can not turn back to original cold conditions, only press manual reset switch F after, thermal switch K3 just can return to the duty of original cold conditions, the situation of return to just that label L6 and L8 are logical, L6 and L5 breaking.In Fig. 1, when insulation cover and housing closes and hasp 7 with take collude 8 hang up after, just connect the power supply among Fig. 5, when hand is pressed reset switch F, make thermal switch K3 return to the logical disconnected down state of going up among Fig. 5, promptly label L6 and L8 lead to, and at this moment point of the A among Fig. 5 and E point are owing to the reason of the disconnection of the normally opened contact K1-2 of relay K 1 and electrothermal relay K2, cause an A point and some E to be in off-state, there is potential difference, triode V conducting, relay K 1 adhesive between some A and the some E, because the adhesive of relay K 1, the K1-2 closure, K1-3 disconnects, because the disconnection of K1-3, and switch S also disconnects, and institute is so that A, 2 of E remain on off-state always.As can be seen from Figure 1, switch S is represented the disconnection of the pressure valve 6 and the annulus on the insulation cover of pressure cooker.In Fig. 5, as long as 2 of A, E keep disconnecting, triode V is with regard to conducting, and resistance wire is switched on and generated heat.
Along with the resistance wire heating, the high pressure kettle temperature constantly raises, after temperature is raised to a certain degree (about 80 ℃), and electrothermal relay K2 action, transfer adhesive to by original disconnection, but because K1-3 disconnects and the disconnection of S, A point and E point still keep off-state always, resistance wire continues heating, the high pressure kettle temperature constantly raises, and is last, because the effect of high steam, make the upwards impulsion of pressure valve of pressure cooker, when running into the annulus on the insulation cover, just switch S becomes the moment closure from disconnection, again because the K1-2 closure causes an A, E communicates immediately, A, E is an equipotential, do not have voltage between the base stage b of triode V and the emitter e yet and be in cut-off state, relay K 1 outage, thereby the contact K1-2 of relay K 1 is returned to often open, K1-3 returns to normally closed, because the K1-3 closure, electrothermal relay K2 is closed again, thereby makes A, 2 of E keep being communicated with, be A, 2 equipotentials of E, triode V is remain off always, makes relay K 1 keep outage, and resistance wire stops heating.Because good heat insulating in the pot, can make and keep higher temperature and elevated pressures in the pressure cooker always, Here it is, and high pressure-temperature keeps process, have only when the high pressure kettle temperature drops to electrothermal relay K2 and bounce back under the original cold conditions situation condition, be approximately 80 ℃, again because the disconnection of electrothermal relay, relay K 1 adhesive, K1-2 is in closure simultaneously, K1-3 is in disconnection, and relay keeps adhesive, the resistance wire heating, the electrothermal relay K2 closure of being heated subsequently, point A, E makes A because relay contact K1-3 disconnects and the disconnection of S, 2 of E continue to keep disconnecting, the resistance wire heating, have only when the steam in pressure cooker impulsion presses valve to run into annulus on the insulation cover, just be equivalent to switch S and connect A, 2 of E just form again and are communicated with, and triode ends, relay K 1 outage, this returns to high pressure-temperature again and keeps status of processes.Go round and begin again like this, make the temperature and pressure in the pressure cooker be in higher state always.
After if water is done in the pressure cooker; in the time of can not producing steam impulsion pressure valve phenomenon; at this moment; resistance wire will constantly heat; but when having arrived certain temperature (about 160 ℃); beating will appear in thermal switch; be that former normal battle in the thermal control switch contact is closed, former normally closed point disconnects, and D and E are communicated; point A communicates with the E point with thermal switch contact K3 by electrothermal relay K2; so some A and some E form equipotential, triode V ends, and resistance wire stops heating; this itself has just played a kind of protective effect; at this moment have only when kettle temperature to drop to normal temperature, promptly K2 returns to when disconnecting, and just can make A; disconnect between the E; the relay K adhesive, the resistance wire heating.Kettle temperature raises, probably about 80 ℃, and saltus step again after electrothermal relay K2 is heated, from being disconnected to closure, thermal switch is in 2 of D, E is communicated, and some A becomes equipotential with some E, the relay outage, triode conducting and the duty of ending depend on the condition that electrothermal relay disconnects and connects.The normal temperature heat insulation work process of Here it is high pressure electric cooker of the present utility model has only when pressing the manual reset switch F of thermal switch K3, and thermal switch contact K3 just resets into original state, just go up logical disconnected down, i.e. label L6 and L5 disconnection.Will be operated in the duty of HTHP in the pressure cooker.
High pressure electric cooker of the present utility model, if use common pan, its operating characteristic and kettle temperature are the same with common electric cooker.
Claims (6)
1, a kind of high pressure electric cooker, it is characterized in that comprising: there is the insulation cover 1 of a circular hole centre, the pressure cooker of forming by pressure cooker body 21 and high-pressure pot cover 22 2, the lagging casing 3 that can hold described pressure cooker body 21, be located at the circuit board 4 of described lagging casing 3 bottoms, metal garden ring 5, be placed on the described high-pressure pot cover 22 and with the relative pressure valve 6 of described insulation cover 1 circular hole, hasp 7, take and collude 8, be located at the resistance furnace 9 of described pressure cooker body 2 bottoms, power supply bakelite receptacle 10, electrothermal relay 11 (K2), thermal switch 12, thermal switch connecting rod 13, thermal switch electrical contact 14, attaching plug 15, reset switch 16, adopt hinge to be connected between described insulation cover 1 and the described lagging casing 3, described hasp 7 is located on the avris relative with described hinge side of described insulation cover 1, described taking colluded 8 and is located on described lagging casing 3 and described and the insulation cover 1 on the hasp 7 installation position relative positions, described power supply bakelite receptacle 10 is located at the outside below of described lagging casing 3, described electrothermal relay 11 is located at the bottom of described resistance furnace 9, described thermal switch 12 is located in the circular hole of described resistance furnace 9 centres, described thermal switch connecting rod 13 is connected between described thermal switch 12 and the described manual reset switch 16, and described thermal switch electrical contact 14 is located on the described thermal switch connecting rod 13.
2, high pressure electric cooker as claimed in claim 1, it is characterized in that, compositions such as the handle 701 that described hasp 7 is made of metal, rotational lantern ring 702, screw 703, fixed support 704, rotating fulcrum 705, described hasp 7 is fixed on the described insulation cover 1 by described screw 703, described hasp 7 103 directly is connected with the annulus at insulation cover top by going between, described rotating fulcrum 705 is located on the described fixed support 704, and the rotating fulcrum of described rotational lantern ring 702 is located on the described handle 701.
3, high pressure electric cooker as claimed in claim 1, its feature also is, described insulation cover 1 comprises: solidify lid 101 that the centre that forms is provided with a circular hole, metal ring 102 in the circular hole that is located at described lid 101, be located at a nut 104 on described lid 101 edges, connect the lead 103 of described annulus 102 and described nut 104 with the organic plastics powder hot-pressing of partiting thermal insulation, described annulus 102, lead 103, nut 104 are fixed on when hot pressing in the described lid 101.
4, high pressure electric cooker as claimed in claim 1, it is characterized in that, described taking colluded 8 and is made up of two parallel metal hook 801, insulating trip 803, insulation sleeve 804, rivet 805 and two conducting strips 806 that are provided with, described hook 801 is fixed on described lagging casing 802(3 by rivet 805 and conducting strip 806) on, described two hooks 801 by insulating trip 803, insulation sleeve 804 mutually insulateds and with described lagging casing 3 insulation, described two hooks 801 communicate with described two conducting strips 806 respectively.
5, high pressure electric cooker as claimed in claim 1, it is characterized in that, described circuit board 4 adopts the switch element of triode V as control loop, the base stage of described triode V and the control loop between the emitter stage are by electrothermal relay 11(K2), the normally opened contact K1-2 of relay K 1 and normally-closed contact K1-3, thermal switch 14(K3) forms, an end and the lagging casing of the movable contact spring of the movable contact spring of described electrothermal relay K2 and described thermal switch 14 and the normally-closed contact K1-3 of described relay K 1 communicate: the other end of described electrothermal relay K2 is connected with the normally opened contact K1-2 of described relay K 1, and links to each other with the base stage of described triode by resistance 2R; The other end of described relay K 1 normally opened contact K1-2 links to each other with the normally-closed contact of described thermal switch K3, and the other end of the normally closed interlock K1-3 of described relay K 1 links to each other with described thermal switch 14 normally open contacts, and is connected with the emitter stage of described triode V.
6, high pressure electric cooker as claimed in claim 1 is characterized in that, described described two conducting strips 806 that collude in 8 taken are connected in the described circuit board 4 power switch 2K as the high pressure electric cooker by two leads 807.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94209400 CN2193111Y (en) | 1994-04-18 | 1994-04-18 | High pressure electric rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94209400 CN2193111Y (en) | 1994-04-18 | 1994-04-18 | High pressure electric rice cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2193111Y true CN2193111Y (en) | 1995-03-29 |
Family
ID=33827096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94209400 Expired - Fee Related CN2193111Y (en) | 1994-04-18 | 1994-04-18 | High pressure electric rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2193111Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772123A (en) * | 2011-05-10 | 2012-11-14 | 聂后昌 | Pan sheathed with case |
-
1994
- 1994-04-18 CN CN 94209400 patent/CN2193111Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772123A (en) * | 2011-05-10 | 2012-11-14 | 聂后昌 | Pan sheathed with case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |