CN100391389C

CN100391389C - Electric pressure rice cooker

Info

Publication number: CN100391389C
Application number: CNB011031751A
Authority: CN
Inventors: 方展崇; 张文辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-11
Filing date: 2001-02-11
Publication date: 2008-06-04
Anticipated expiration: 2021-02-11
Also published as: CN1771873A; CN100446704C; CN1369247A

Abstract

The present invention provides a pressure rice cooker which relates to a pressure rice cooker. A high-intensity axle seat is connected with an outer cooker, a metal sheet is combined into a connection handle, and the axle seat is firmly hinged with a circular pipe on one end of the metal sheet; a temperature control device which utilizes the expansion of heating liquid in a liquid storage pipe or the increase of air pressure to make a film box sheet displace or a temperature control device which utilizes the heating deformation of main and auxiliary double metal sheets is used for controlling heating temperature. Thus, the pressure rice cooker has the advantages of high safety, convenient operation and reliable performance.

Description

A kind of electric pressure

Affiliated technical field

A kind of electric pressure of the present invention relates to a kind of electric pressure.

Background technology

Electric pressure is auto-electronic pressure cooker again.Electric cooker comprises that electric pressure cooking saucepan is human main cooking vessel, and household electric appliances are all improved it in all one's effort research all over the world, though room for improvement is more and more littler, a bit improving of it just is enough to the human lives is produced great effective influence.Commercially available Xisi, famous beauty in the late Spring and Autumn Period's electric cooker is easy and safe to operate, but it is to cook with normal pressure, and performance is restricted.Existing electric pressure utilizes HTHP to cook, and time-saving energy-saving is in tune with the times, but its pot cover separates with the pot body.The electric pressure the greatest danger is that quick-fried the flying out of pot cover makes people's casualties, and the pot cover electric pressure inconvenient operation of separating with the pot body, unhygienic.The heating control mode of commercially available electric pressure has weak point simultaneously, and it has three kinds of modes, and a kind of is to utilize pressure directly to control heating-up temperature, and a kind of is to utilize electronics or computer control temperature, and a kind of is to utilize pressure limiting valve control temperature.Utilize the pattern of pressure control temperature that the pot body is had relatively high expectations, and easy deformation and producing than mistake with the passing of time; With electronics or computer control mode cost is higher and not enough heatproof; Utilize the mode of pressure limiting valve control temperature then similar to general pressure cooker, can spray steam, smell, energy-conservation inadequately when cooking, taste scatters and disappears.

Summary of the invention

In order to overcome existing electric pressure cooking saucepan defective, the invention provides a kind of electric pressure, this electric pressure not only has the function of existing electric pressure cooking saucepan time-saving energy-saving, and has the easy to operate function of Xisi, famous beauty in the late Spring and Autumn Period's electric cooker.

The technical solution adopted for the present invention to solve the technical problems is: the middle pot of the electric pressure of A.T.C pressure or interior pot upper edge and pot cover lower edge utilize the chimeric rotatory sealing of embedded structure, utilize timing system to regulate heat time heating time, the axle bed that the outer pot upside has metal or other high-strength material to make, connect handle sheet metal is arranged, the hole that the axle bed that the pipe of sheet metal one end is incorporated into outer pot is incorporated into pipe and axle bed to bearing pin again makes it to become hinge and is connected, there is plastic sheath to cover (or apply with plastics) on the sheet metal, sheet metal has the commentaries on classics hole, pot cover has rotary column above the center, the commentaries on classics hole is incorporated into rotary column and the fixing pot cover that makes can rotate, connect handle top the plastics handle is arranged, float-controlled valve is contained in and connects handle when utilizing rotation on the appropriate location of pot cover whether float-controlled valve is hidden when pot cover being placed fasten contraposition and can float, float-controlled valve is covered and can not float, temperature controller auto-control temperature, pressure by company's handle when fastening not contraposition.

The invention has the beneficial effects as follows: owing to adopt such scheme, quick-fried the flying out of pot cover that can fundamentally solve electric pressure makes the accident of people's casualties, and easy and safe to operate, the fast energy-saving of cooking is delicious, and features simple structure is reliable, and cost reduces.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is an embodiment of the invention principle schematic.

Fig. 2 utilizes expansion of liquids or air pressure to make bellows sheet deformation displacement control the temperature controller of temperature,

Fig. 3 is the temperature controller that utilizes major-minor two bimetal leafs control temperature.

Fig. 4 is the temperature controller that two temperature-measuring parts are arranged.

Fig. 5 is the circuit theory diagrams that two temperature-measuring parts or two temperature measurement circuits are arranged.

Among the figure in the interior pot 4. of 1. temperature controllers, 2. heaters 3. pot 5. outer pots 6. end hands 7. bearing pins 8. axle beds 9. sheet metals 10. plastic sheaths 11. clench nails 12. connect handle 13. float-controlled valves 14. handles 15. pressure limiting valves 16. rotary columns 17. and turn hole 18. retainer spring spares 19. and help rotating part 20. pot covers 21. pipes 22. spring leafs 23. push rods 24. decide 37. protruding 38. wires, 39. sealing rings of frame 25. springs, 26. liquid storage tubes 27. bellows sheets, 28. wires 29. contacts, 30. set screw 31. timers, 32. main bimetal leaf 33. spring leafs 34. contacts, 35. auxiliary bimetal leafs 36. supporting grains, 40. normally opened contacts, 41. normally-closed contacts, 42. time switches. 43. set screw

The specific embodiment

In Fig. 1, the pot body is divided into (5) three layers of interior pot (3), middle pot (4), outer pots, interior pot dress food, and mutual chimeric shape is made in middle pot upper edge and pot cover (20) lower edge, by pot in sealing ring (39) sealing.The outer pot upside has end hand (6), axle bed (8) employing high-strength material preferably metal is made, axle bed (8) firmly links together with outer pot, connects handle (12) and is combined with clench nail (11) by sheet metal (9), plastic sheath (10), and connecting handle top has handle (14) so that the usefulness of folding.Sheet metal lower-left end has two pipes that separate (21), and pipe (21) is incorporated in the axle bed (8), screws in bearing pin (7), and connecting handle just can be that the center spins upside down with the bearing pin.Illustrate herein that axle bed also can be divided into two pipes as pipe (21), and the pipe (21) of sheet metal lower-left end also can be made one as axle bed, closes into and inserts bearing pin.Rotary column (16) is arranged above the center of pot cover (20), and sheet metal (9) has the commentaries on classics hole (17) that is a bit larger tham the rotary column diameter, goes in the rotary column to fix it again changeing borehole jack, and pot cover can rotary column be the center rotation just.Pot cover links together by the sheet metal that connects handle securely with the pot body like this, and pot cover is not only turning but also rotatable, and even the plastic sheath of handle can not conduct heat with handle.So fundamentally solve pot cover because of pressure when excessive quick-fried flying out make the accident of people's casualties, and easy to operate, handsome in appearance.For pot cover can turn during pot cover in upset, connect a location spring part (18) below sheet metal, do a recess at the pot cover correct position, the rotation pot cover is worked as retainer spring spare and is stuck once arriving recess, so just can make things convenient for folding to the chimeric position of good pot cover lower edge and middle pot upper edge.And firmly counter-rotating, spring part is deviate from recess again.Sheet metal is made the balanced seal of the loosening form of certain elasticity in order to pot cover.For attractive in appearance and convenient boiler-cover rotation folding, shown in Fig. 1 vertical view, connect the handle right-hand member and be preferably made isocentric circular arc with rotating part (19) left end that helps that is fastened on the pot cover right-hand member.Rotate for pot cover is fixed in the certain angle, keeper is arranged in the pot cover appropriate location.Can float when the appropriate location that float-controlled valve (13) is contained in pot cover fastens contraposition with convenient pot cover, fasten not contraposition and then connected handle and cover the sealing of to float to guarantee safety.

As shown in Figure 1, heater (2) has a mesopore, and the temperature-sensitive part of temperature controller (1) is in mesopore, and interior pot (3) is placed on the heater.In order to make temperature controller can better experience interior cooking bottom temperature, the pot the bottom of a pan in the pipe face of temperature controller is close to.Available for this reason spring part cooperates temperature controller above the high from heater core of pipe face, not push down temperature control organ pipe face after interior pot puts in when interior pot puts in.Temperature controller can have multiple mode, temperature controller of the present invention can adopt suitable existing product, the inventor has invented two kinds of simple and effective temperature controllers, a kind of is the mode that adopts expansion of liquids or gas increased by thermal pressure, as shown in Figure 2, make the interior filled with fluid of liquid storage tube (26) of suitable shape or adorn the lower liquid of a certain amount of boiling point, liquid storage tube connects bellows sheet (27), deciding frame (24) is close on liquid storage tube, the bellows sheet has a push rod (23) in the middle of the outside, push rod is changeable, decide to fix on the frame microswitch, microswitch has spring leaf (22), and spring leaf has contact (29) to contact with the contact of another sheet metal, the connection heater is drawn by lead (28) in the contact, and the contact is normally closed at ordinary times.Spring leaf is made definite shape and is made that the contact can disconnect by jumping when being pressed to a certain degree downwards when push rod (push rod and the insulation of bellows sheet), close in push rod semi-coast contact great-jump-forward again, spring leaf is regulated temperature when changing contact switch and jump by set screw (30), the elasticity of spring leaf also can be without set screw with other modes such as regulating with eccentric mode.For easy, the unite title of usefulness " set screw " of this paper replaces.The bellows sheet can be not yet directly on liquid storage tube and can below liquid storage tube, connect a little copper pipe, the little copper pipe other end directly or indirectly connects the bellows sheet again, bellows sheet and spring leaf just can be installed on pot side so that regulate temperature required like this.For the stability of bellows sheet also can add upper spring (25).In order to prevent the too high generation plastic deformation of bellows sheet Yin Wendu, can make the plastic deformation that definite shape is protected the bellows sheet deciding frame.The pot the bottom of a pan in the liquid storage tube face is close to.When reaching about 115 ℃, temperature (can change temperature) by the elasticity of adjusting set screw, heated liquid expands or low-boiling point liquid produces high-pressure gas, promoting the bellows sheet protrudes downwards, the downward top of push rod spring leaf (22) is beated spring leaf suddenly, the contact disconnects, heating stops, and interior pot temperature descends, bellows sheet retraction.When push rod reduces top pressure spring sheet pressure after to a certain degree, spring leaf jumps suddenly and recovers original state and closed again in the contact, and heating restarts.In order to make reset temperature, can use set screw (40) regulating spring sheet near break-off signal.Go round and begin again like this, until till the timer setting-up time.Second kind of temperature controller is the distortion that utilizes bimetal leaf.General bimetal strip thermostat break-off signal is comparatively accurate, but that reset temperature then differs is bigger, does not reach instructions for use.Temperature controller of the present invention requires reset temperature near break-off signal, does a temperature controller with major-minor two bimetal leafs for this reason, and Fig. 3 is a principle schematic.According to the difference of shape, the active layers of two bimetal leafs and passive layer can be in the same way, also can be incorgruous.Fig. 3 is one of them embodiment.The shape that main bimetallic (32) upwards bends up in the middle of making, active layers is following, passive layer is last, stator (piece) is arranged below, a hole is arranged in the middle of the main bimetal leaf, pass this hole by supporting grain (36) and hold, spring leaf (33) is arranged above the main bimetal leaf, its right-hand member is fixed, and left end has contact (34), and the corresponding contact of this contact is drawn by lead respectively and connected heater.Spring leaf is in position gone out to lower cam position (37).The auxilliary bimetal leaf (35) of making bending is arranged on spring leaf, and active layers is last, and passive layer is down, and its effect is to reset as early as possible when the contact break-off signal is reduced.Stator (piece) is also arranged above the auxilliary bimetal leaf.The contact is normally closed at ordinary times, and when temperature was elevated to 115 ℃ of left and right sides, main bimetal leaf stretched the salient point of jack-up spring leaf (33), and spring leaf upwards bends up, the unexpected tripping in contact.At this moment auxilliary bimetal leaf (35) also becomes straight, temperature descends after the contact disconnects, (35) become curved under the auxilliary bimetallic, because stator is arranged above it, auxilliary bimetal leaf withstands spring leaf (33) downwards to pressing down, recover original form with this acceleration spring sheet and closed in the contact, thereby make reset temperature near break-off signal.In order to improve precision, can connect set screw on the stator up and down.(not scheming not draw) for easy figure.

The zequin of existing automatic pressure pot heat tracing time has two kinds of modes, and a kind of is promptly to pick up counting about 115 degree from reaching specified HTHP, and another kind is to plug in from the beginning to heat just to carry out timing.These two kinds of modes all exist weak point.This is to make and produce gas leakage in the pot because the pot cover sealing ring is stained with thing such as rice sometimes, perhaps forgotten putting pressure limiting valve sometimes, also have other reason all may make in the pot and do not rise pressure, do not reach rated temperature pressure forever in the pot, timer just can not walked about like this, heat generating member constantly generates heat, and the result burns out food so that the pot body.If pick up counting but heat once plugging in, then because water temperature water yield difference, the time is difficult to calculate to be determined.The inventor is through practice. invented a kind of timing new method, Here it is from closing on boiling or boiling the time picks up counting, like this no matter in the pot the bad liter of sealing not temperature, pressure, also regardless of water temperature water yield difference, timer also guarantees the timing of normally walking about, and cooks and can control the duration and degree of heating.This clocking method is applicable to all types of electric pressure cooking saucepans.This clocking method can be implemented in various manners, can produce the temperature control method of the bottom of a pan displacement with pressure with existing, can make the electronics computer mode of sensor with thermistor, also can implement with common temperature controller.Mode with thermistor or temperature controller can be divided into two kinds again, and a kind of is to make water temperature maintenance basic synchronization temperature in temperature controller and thermistor and the pot, and another kind is to make the two temperature that big gap be arranged.In first kind of mode, for temperature controller two temperature-measuring parts must be arranged, i.e. normally opened contact (40) and normally-closed contact (41).As shown in Figure 4, normally opened contact be used for when temperature near or reach boiling and the time close so that timer picks up counting, normally-closed contact is used to make kettle temperature to keep constant temperature and pressure; For thermistor two circuit must be arranged, one be when water temperature near or arrive 100 and timer picked up counting when spending, another circuit is to keep constant temperature till the setting-up time about 115 degree when arriving.The ball bearing made using principle of above-mentioned several modes is seen Fig. 5.Heater (2) one power turn-ons promptly heat among the figure, close timer (31) is picked up counting when water temperature arrives 100 normally opened contacts when spending (40), heater is heated to when reaching rated temperature in the pot temperature controller or electronics computer circuit or pressure switch and regulates and control to keep in the pot constant temperature and pressure up to the timer setting-up time, time switch (42) disconnects, heating stops, no matter whether seal in the pot, all stop heating equally like this when arriving setting-up time.In sum, the pot sealing configures the time in making after the pot cover that closes when cooking rotates to an angle, and plugs in and promptly heats by setting-up time.Get the reverse rotation of when food, arrest the handle pot cover that upwards overturns, get the pot cover that closes after the food as Xisi, famous beauty in the late Spring and Autumn Period's electric cooker, very convenient, close polite peace and quiet when covering.

The middle pot of above-mentioned Fig. 1 also can be integrated with interior pot, in pot become interior pot.In order to save material, (interior) pot in can making of thin aluminium sheet, corrosion resistant plate or iron plate, and the shape of reinforcement dynamics is made in chimeric position and the bottom of a pan in the upper edge.Can there be the additional even part of fixed seal ring sealing ring and pot cover to be lumped together and take out cleaning easily in the pot cover.Timer can be made button or rotary like that as electric cooker, can preset regularly.Thermal cut-off, warmer etc. can be arranged.Temperature controller of the present invention can be to fix it after product regulates, and also can be to change heating-up temperature by adjusting set screw at any time according to the food situation.The present invention also can replace temperature controller regulation and control kettle temperature pressure with electronic circuit or computer system or pressure controlling system even with pressure limiting valve.

Claims

1. electric pressure, wherein pot or interior pot upper edge utilize embedded structure to cooperate rotatory sealing with the pot cover lower edge, utilize timing system to regulate heat time heating time, it is characterized in that the axle bed that the outer pot upside has high-strength material to make, connect handle sheet metal is arranged, the pipe of sheet metal one end is incorporated into hole that axle bed is incorporated into pipe and axle bed to bearing pin again and makes it to become hinge and be connected, there is plastic sheath to cover on the sheet metal, sheet metal has the commentaries on classics hole, pot cover has rotary column above the center, the commentaries on classics hole is incorporated into rotary column and the fixing pot cover that makes can rotate, connect handle top the plastics handle is arranged, float-controlled valve is contained in and connects handle when utilizing rotation on the appropriate location of pot cover whether float-controlled valve is hidden float-controlled valve can float when making the pot cover rotation fasten contraposition when in the pot air pressure being arranged, when the pot cover rotation fastens not contraposition float-controlled valve covered by handle even non-rising, temperature controller auto-control temperature, pressure.

2. electric pressure according to claim 1 is characterized in that temperature controller has a slice master bimetal leaf and the auxilliary bimetal leaf of a slice.

3. electric pressure according to claim 1 is characterized in that connecting the handle right-hand member and pot cover helps the rotating part left end to make isocentric circular arc.

4. electric pressure according to claim 1 is characterized in that sheet metal connects the retainer spring sheet and cooperates with the pot cover recess playing fixation.

5. electric pressure according to claim 1 is characterized in that temperature controller is replaced by electronic circuit or computer regulated system or pressure controlling system.