CN2403325Y - Electric pressure cooker - Google Patents

Abstract

The utility model relates to an electric pressure cooker, which is composed of a cooker cover, a casing, an outer cooker, an inner cooker sheathed in the outer cooker, a heating plate arranged below the bottom of the inner cooker, a heating control component, etc. The bottom of the outer cooker is a thin plane on which a layer of metal plate is arranged. The heating plate is arranged on the metal plate. A position switch connected with a heating circuit is arranged at the lower bottom of the outer cooker. The utility model has the advantages of simple structure, compact structure, easy manufacture, low cost, and high safety.

Description

A kind of electric pressure cooking saucepan

The utility model relates to a kind of electric pressure cooking saucepan.

Existing electric pressure cooking saucepan mostly is pressure-controlled, as Chinese patent 91100026.7 and 932194007.7 disclosed technical schemes, its common feature is that the elasticity of outer pot connects in realizing by elastic device, with this pressure signal transmission in interior pot is come out, be transformed into displacement signal, by the mechanical switch transmission, pressure signal transmission is reached the purpose of the automatic control of pressure to the switch of control circuit again.But its pressure signal transmission process complexity, the loss of signal is big, and difficulty of processing height, cost height, reliability are lower; Simultaneously, the poor linearity of pressure signal, debugging and control difficulty, automaticity is not high.For addressing this problem, someone adopts the technical scheme in the outer the bottom of a pan of thin plate, when inner pot pressure increases, pressure is delivered to heat-generating disc by the interior the bottom of a pan and is delivered to the outer the bottom of a pan of thin plate again, make it that elastic deformation take place, directly control travel switch in the heater circuit with the automatic control of realization pressure by being fixed on rigid rod this bottom of a pan, plane under again.This technical scheme elasticity of demand device realizes that the elasticity of interior outer pot connects, and therefore, its pressure signal transmission is direct, simple in structure, handling ease; But owing to be not whole plane contact between the heat-generating disc and the outer the bottom of a pan, but several feets of heat-generating disc contact with the outer the bottom of a pan, the outer pot bottom position that is contacted like this is bigger than the pressure that other position is subjected to, the intensity in the thin plate the bottom of a pan is less again, therefore the bottom of a pan deformation quantity everywhere differs more outside, thereby the poor linearity of outer the bottom of a pan deformation influences voltage-controlled precision; If adopt the bottom of a pan outside the thick plane, then intensity is big, elasticity is little, is difficult to control by deformation.

The purpose of this utility model provide a kind of simple in structure, handling ease, saving material, with low cost, pressure signal transmission is direct, the electric pressure cooking saucepan of the automatic precise control of pressure.

Order of the present utility model can be achieved through the following technical solutions: the utility model comprises pot cover, shell, outer pot, is enclosed within interior pot, heat-generating disc, heating Control Component in the outer pot, between pot cover and interior pot, be provided with sealing ring, pot cover is fastened on the outer pot, the outer the bottom of a pan is a thin plate structure, this the bottom of a pan, plane is provided with the layer of metal plate, heat-generating disc places on the metallic plate, and the outer pot lower bottom part is provided with the one stroke switch, and travel switch, heat-generating disc and heating Control Component link together.

Good effect of the present utility model is the outer the bottom of a pan is designed to thin plate, and be provided with the layer of metal plate outside between the bottom of a pan and the heat-generating disc, therefore, whole outer pot all can adopt thin material to make, promptly guarantee the elasticity in the outer the bottom of a pan, guaranteed the intensity in the outer the bottom of a pan again, and whole outer pot adopts thin material can save material, reduce cost; Simultaneously, the utility model is directly controlled heater circuit by the travel switch that is located under the outer pot, has therefore both removed the elastic connecting device between the interior outer pot from, omitted complicated conversion transmission mechanism again, pressure signal transmission is direct, and the linearity is good, precise control automatically.The utility model also has simple in structure, the characteristics of handling ease.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Accompanying drawing 1 is the utility model structural representation.

As shown in drawings, the utility model comprises pot cover 1, shell, be enclosed within the outer pot 3 in the shell, be enclosed within the interior pot 4 in the outer pot 3, heat-generating disc 5, be arranged on the heating Control Component 8 between shell and the outer pot 3, include timer in the Control Component 8 with the control dwell time, between pot cover 1 and interior pot 4, be provided with sealing ring 2, pot cover 1 is fastened on the outer pot 3, the slim steel of outer pot 3 usefulness constitute, its bottom design becomes the plane, outer pot 3 bottom surfaces are provided with layer of metal plate 6, metallic plate 6 can be manufactured with cold-reduced sheet or corrosion resistant plate or steel spring plate, this layer metallic plate can be designed to monoblock, also can be designed to some places side by side, also can establish reinforcement on metallic plate 6, heat-generating disc 5 is located on the metallic plate 6.Metallic plate 6 has guaranteed the intensity in the slim outer the bottom of a pan, and the linearity is good when making the deformation of the outer the bottom of a pan, guarantees the operate as normal of pressure cooker in working pressure range; Can guarantee that again there is certain elasticity in the outer the bottom of a pan, make the utility model when reaching setup pressure value, can there be enough elastic deformations to control the work of heater circuit, can make simultaneously the utility model pots 4 reach certain value in when pressure reaches safe pressure, making to bottom offset by the deformation of outer pot 3 bottom surfaces, destroy the sealing of pot 4 in 2 pairs of the sealing rings, realize pressure release, guarantee safety; Be provided with one stroke switch 7 in outer pot 3 bottoms, travel switch 7 is connected with the heating circuit of heat-generating disc 5, disconnects travel switch 7, can disconnect heater circuit, and heating is stopped, increasing temperature and pressure no longer in the pot.

For making the utility model when cooking food of different nature, can choose different pot inner pressures, travel switch 7 more than 2 is set below outer pot 3 bottoms, about these travel switches, stagger successively in position, the left and right sides, the outer like this bottom of a pan is different with the distance of each travel switch, in heating Control Component 11, a button change-over switch is set again, different in kind according to cooking food can insert heater circuit with different travel switches by the button change-over switch, and different travel switches is different with the distance in the outer the bottom of a pan, therefore will disconnect different travel switches just needs outer pot 3 bottoms that the elastic deformation of different sizes is arranged, pressure size just in the pot 4 is different, so can choose different operating pressures by change-over switch, to satisfy the needs of culinary art heterogeneity food.

The utility model in use, on control panel, choose the time of required operating pressure and needs pressurize earlier by button change-over switch and timer knob according to the food of culinary art, in interior pot 4, install the food that to cook then, interior pot 4 is put into outer pot 3, pot 4 upper edges in sealing ring 2 places, after having fastened pot cover 1, pot cover 1 forms sealing with interior pot 4, connects power supply and makes that pot 4 heats in 5 pairs of the heat-generating discs.Carrying out with heating, pressure in the interior pot 4 rises gradually, in interior pot 4 under the effect of pressure, heat-generating disc 5 acts at the bottom of the thin plate of outer pot 3 by the metallic plate under it 6 on, make 3 end of outer pot pressurized more even, the bottom integrated deformation gradually of the outer pot 3 that slim steel constitute, in the safe pressure scope, the pressure cooker operate as normal.When the pressure in the pressure cooker reached the operating pressure of setting, the elastic deformation of outer pot 3 bottoms disconnected travel switch, and heater circuit stops heating; When pot inner pressure descends gradually, 3 end of outer pot elastic reset, when reaching setting value, travel switch is closed again, and heat-generating disc 5 heating of switching on once more remains in the setting pressure scope inner pot pressure.So periodic duty to timer arrives the time of setting, timing break of contact heater circuit, and cooking process is finished, and enters keeping warm mode automatically.So just realized controlling automatically the purpose of heater circuit fully by the pressure signal in the interior pot 4.

For making the utility model that more multiple tracks security perimeter in use be arranged, also pressure limiting valve commonly used 9 and safety valve 10 can be set on pot cover 1.So just can form following maltilevel security defence line; During operate as normal, by the pressure in the pot 4 in the device controls such as heating Control Component 8, travel switch 7; Heating Control Component 8 and travel switch 7 are malfunctioning, can pass through pressure limiting valve 9 pressure limitings; Pressure limiting valve 9 stops up, and can pass through safety valve 10 pressure releases; Safety valve 10 also stops up, and then can guarantee the safety of using by the sealing pressure release between pot cover 1 and the interior pot 4 at last.

Claims (5)

1, a kind of electric pressure cooking saucepan, include pot cover (1), shell, outer pot (3), be enclosed within the interior pot (4) in the outer pot (3), heat-generating disc (5), heating Control Component (8), between pot cover (1) and interior pot (4), be provided with sealing ring (2), pot cover (1) is fastened on the outer pot (3), it is characterized in that outer pot (3) bottom is thin plate, on the thin plate the bottom of a pan, be provided with layer of metal plate (6), heat-generating disc (5) places on the metallic plate (6), outer pot (3) lower bottom part is provided with one stroke switch (7), travel switch (7), heat-generating disc (5) and heating Control Component (8) link together.

2, electric pressure cooking saucepan according to claim 1 is characterized in that metallic plate (6) is to form side by side by some.

3, electric pressure cooking saucepan according to claim 1 and 2 is characterized in that under the outer pot (3) side is provided with the travel switch (7) more than 2, about these travel switches, position, the left and right sides staggers successively.

4, electric pressure cooking saucepan according to claim 3 is characterized in that being provided with pressure limiting valve (9) on pot cover (1).

5, electric pressure cooking saucepan according to claim 4.It is characterized in that on pot cover (1), also being provided with safety valve (10).

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