CN101268908A - Simple multi-function electric pressure cooker - Google Patents

Abstract

The invention relates to a simple and multifunctional electric pressure cooker which belongs to the technical field of the electric pressure cooker. The lower part of a cooker body is provided with a heating tray (4), a middle hole is arranged in the middle of the heating tray, a temperature controller is arranged in the middle hole of the heating tray, an internal pot (5) is arranged on the heating tray and the temperature controller, a timer is arranged on the cooker body and the temperature controller in the middle of the heating tray is positioned like that: a single-functional dish-shaped double metal sheet temperature controller (2) that can switch on a timing circuit when the temperature in the pot reaches about 100 DEG C, and a dish-shaped double metal sheet temperature controller (3) which has double function and can not only control the pot to work within the rated working temperature scope, but also can ensure the food not to be burnt because of the overheating of the pot bottom, are combined together to form a composite temperature controller (1) that leads the temperature sensing ends of two single temperature controllers to be elastically contacted with the pot bottom of the internal pot of the electric pressure cooker. The simple and multifunctional electric pressure cooker has simple and convenient structure and complete function, and provides the stable technical foundation on the popularization and the dissemination of the electric pressure cookers in China and all over the world.

Description

Simple multi-function electric pressure cooker

Affiliated technical field

The present invention relates to a kind of simple multi-function electric pressure cooker.

Background technology

The usual pressure pot is controlled operating pressure by the pressure limiting valve exhaust, power consumption and not environmental protection; The pressure cooker of temperature automatically controlled pressure control is called for short electric pressure cooking saucepan, and it is divided into two kinds, and a kind of is computermatic, and remaining is referred to as mechanical timer formula (abbreviation mechanical type).More expensive and the non-refractory of computermatic electric pressure cooking saucepan.Existing machinery timing electric pressure cooking saucepan technical scheme has multiple, but all not ideal enough, the function that has is complete inadequately, and the complete electric pressure cooking saucepan technical scheme parts of function are too much, complex structure.The electric pressure cooking saucepan technical scheme that existing capability is complete must have three kinds of basic functions, one is the function of control operating temperature pressure, one is that the control the bottom of a pan can be because of the function of overheated burning foods, and one is can make things convenient for the working time accurately to be set and the time to make the walk about function of effective timing of timer in the undesired gas leakage of pot cover.All three parts (device) must be set simultaneously for carrying out above-mentioned three function existing machinery timing electric pressure cooking saucepans, one is to connect the normally opened contact of timer circuit and supporting timer when the 100 degree left and right sides, one is the pressure switch or the temperature controller of constant temperature and pressure when the 75Kpa pressure or the 115 degree left and right sides, and one is the temperature controller that disconnects more than 140 degree.Existing electric pressure cooking saucepan prevents that the overheated selected temperature controller break-off signal in the bottom of a pan is placed on the position difference and the model difference in the bottom of a pan according to temperature controller, generally all between 140 to 170 degree, break-off signal is blown temperature low spot slightly than thermal cut-off, but all the temperature that disconnects of the temperature controller contact of constant temperature work is much higher as far as possible than the control operating temperature.

Existing machinery formula electric pressure cooking saucepan mainly adopts pressure switch to experience the bottom of a pan compressive deformation and produces displacement and regulate and control operating pressure, wants art higher to the bottom of a pan material property, and technology bothers, and pressure switch easily produces displacement and influences accuracy through long-term work.Proposed in the former patent of inventor bellows sheet temperature controller that a kind of usefulness is equipped with gas or liquid carry out temperature adjusting electric pressure cooking saucepan and according to two contacts of this bellows sheet temperature controller supporting the ball bearing made using principle.But this temperature control technology is because complex process, poor stability, and must dispose in addition other prevent the overheated work in the bottom of a pan at the temperature controller of high-temperature disconnection very, the technique effect of shortage reality.

Existing bimetal leaf butterfly temperature controller is with low cost, easy to assembly, stable and reliable for performance, but it has a fatal weak point, and reset temperature (also being the temperature difference that resets) is too big, and its temperature difference that resets of the product that is suitable for producing in batches reaches about 10 degrees centigrade.Electric pressure cooking saucepan generally is at 115 degree left and right sides constant temperature and pressures, industry technical staff thinks, the bimetal strip thermostat excessive temperature differentials that resets, to make a pot interior operating temperature rise and fall excessive and be difficult to accurately be provided with the time effects of the cooking effect of cooking, lack practicality, therefore general producer all not have to adopt the butterfly shaped dual metal sheet temperature controller as the temperature-control pressure-control device separately, and the inventor thinks that also having the butterfly shaped dual metal sheet temperature controller now is difficult to once to propose in the former patent as the temperature-control pressure-control element of electric pressure cooking saucepan a kind of bimetal strip thermostat that temperature-compensating arranged as the cook temp-controlling element of temperature of electric pressure cooking saucepan.But the inventor proves that through long-term deeply test above-mentioned prejudice is wrong.

The inventor consults various data and the various commercially available electric pressure cooking saucepans of test before this, find existing electric pressure cooking saucepan technology particularly the mechanical type electric pressure cooking saucepan do not have convenient and reasonable ground to address the problem simultaneously: can make things convenient for when the working time accurately being set and can solving pot cover gas leakage the timer timing of walking about as usual, can occur in time stopping when overheated the electric pressure cooking saucepan technology that heats again unusually in the bottom of a pan.For ideal solves the particularly above-mentioned defective of mechanical type electric pressure cooking saucepan of electric pressure cooking saucepan, invented the technical scheme of utilizing two temperature controllers on the known voltage power pot technical foundation that the inventor generally uses in the whole nation, solved the problem that perplexs whole electric pressure cooking saucepan industry at that time ideally with pressure switch regulation and control operating pressure.But this kind electric pressure cooking saucepan still needs to be provided with simultaneously timer, bimetal strip thermostat and pressure switch or another temperature controller for the basic function that realizes above-mentioned three kinds of indispensabilities.

In a word, the cost performance of existing electric pressure cooking saucepan still exists deficiency and defective, causes present electric pressure cooking saucepan very low in the popularity rate in the whole world, the whole nation.

Summary of the invention

In order to overcome the defective of existing electric pressure cooking saucepan, the invention provides a kind of simple multi-function electric pressure cooker.

The present invention solves the technical scheme that its this problem of skill adopted: heat-generating disc is arranged at electric pressure cooking saucepan pot body bottom, (leading to) hole in having in the middle of the heat-generating disc, temperature controller is in the heat-generating disc mesopore, heat-generating disc and interior pot is arranged above the temperature controller, pot has timer on one's body, temperature controller is to place like this: a single function butterfly bimetal strip thermostat of connecting timing circuit when arriving the 100 degree left and right sides in the pot, one has dual-use function, can control the work in the nominal operation temperature range that remains in the pot, can ensure that again reason is overheated and burn out the butterfly shaped dual metal sheet temperature controller of food in the bottom of a pan, lump together and form a compound temperature controller and make pot the bottom of a pan Elastic Contact in two single temperature controller temperature-sensitive ends and the electric pressure cooking saucepan.

The invention has the beneficial effects as follows: mechanism is simple, and is multiple functional, and parts are few and can effectively cook, and in same function and performance voltage power pot, this electric pressure cooking saucepan structure is the simplest, and cost is minimum and steady quality is reliable.

Description of drawings

Fig. 1 is combined into a compound temperature controller schematic diagram to single function temperature controller and two single temperature controllers of difunctional temperature controller.

Fig. 2 is an embodiment of the invention principle schematic.

1. compound temperature controllers among the figure, 2. butterfly shaped dual metal sheet list function temperature controller, the 3. difunctional temperature controller of butterfly shaped dual metal sheet, 4. heat-generating disc (device), 5. in pot, 6. pot body, 7. pot cover, 8. timer, 9. time switch, 10. power end, 11. power ends

The specific embodiment

As shown in Figure 1, compound temperature controller (1) is made of two single temperature controllers, one is butterfly shaped dual metal sheet list function temperature controller (2), its function be in pot food temperature near or arrive 100 degree and become closure state by normally open during (with the ebulliometer of water) left and right sides the timer circuit connection is picked up counting, one is the difunctional temperature controller of butterfly shaped dual metal sheet (3), its function is can control pot interior food to remain on work in the rated temperature, can ensure that again reason is overheated and burn out food in the bottom of a pan, makes a compound temperature controller (1) to these two single temperature controllers.Each single temperature controller respectively has two lead-out wires to connect end.

Fig. 2 is one of embodiment of the invention principle schematic.As shown in Figure 2, electric pressure cooking saucepan has a pot body (6), and heat-generating disc (4) is arranged at the bottom, and heat-generating disc also is heating element.Through hole is arranged in the middle of the heat-generating disc, compound temperature controller (1) is furnished with spring assembly (not drawing among the figure) and is placed in the through hole, in pot (5) be placed on heat-generating disc and above the temperature controller, two single temperature controller temperature-sensitive ends keep cooking bottom temperature in two accurate sensings of single temperature controllers energy by the bottom of a pan under the pot in compound temperature controller (1) Elastic Contact.Timer (8) is equipped with in the suitable place of pot body, and timer is furnished with time switch (9).Single function temperature controller (2) one ends be connected power end (11) after difunctional temperature controller (3) one ends connect mutually, one the other end of difunctional temperature controller (3) connection heating element (4) connects end, the other end of single temperature controller (2) is connected with timer (8) one ports, another connects heating element end and is connected timer (8) another port, the time switch (9) that this connectivity port is positioned at timer before, time switch connects power end (10).Its operation principle can be as can be seen from Figure 2.At first set and cook the time according to food species, timer (8) knob is rotated to a certain position, plug in, electric current is through difunctional temperature controller (3), heating element (4) begins heating, when arriving the 100 degree left and right sides (good more near water boiling point more), single function temperature controller (2) begins the closed timing circuit of connecting from normally open, timer begins to calculate cooks the time, heating element continues heating, when arriving nominal operation temperature upper limit (such as about 115) in the pot, difunctional temperature controller (3) contact disconnects, kettle temperature descends, the contact is connected heating again when dropping to uniform temperature, disconnects again in limited time on operating temperature ... go round and begin again like this to make and maintain in the pot in the nominal operation temperature range.What will say here is that an experience theorem is arranged on the science: every rising 10 degree of temperature, reaction (cooking) speed doubles.Because there are much relations temperature and the food time of boiling, electric pressure cooking saucepan should remain in the temperature constant state as far as possible and work, and could make things convenient for when cooking like this working time accurately is set, in order to avoid boil not yet done ripe sometimes excessive situation when having.Those skilled in the art comprised that the inventor thought in the past, and the existing 115 degree butterfly shaped dual metal sheets that can produce in batches reset the temperature difference about 10 degree, and the temperature difference that resets is big like this to be unsuitable for the electric pressure cooking saucepan operating temperature.But the inventor finds through the reality test, though originally break-off signal is that its temperature difference that resets of butterfly shaped dual metal sheet temperature controller of 115 degree is 10 degree, but after suitably loading onto electric pressure cooking saucepan, the changing value of kettle temperature is but well below 10 degree, majority is not more than 5 degree, is suitable for doing the control device of the operating temperature of electric pressure cooking saucepan fully.After the time of cooking was set in arrival, time switch (9) disconnected, and heating stops.Begin to calculate the time of cooking because the present invention utilizes single temperature controller (2) to connect timer circuit during the left and right sides at 100 degree,, make food boil to such an extent that just arrive the duration and degree of heating like this no matter how many differences of food can both make things convenient for accurately setting to cook the time in the pot; And owing to connect timing circuit from about 100 degree, so the timing even pot cover gas leakage timer also can be walked about, one is that the automatic disconnection heater circuit stops to heat to setting-up time.

The same with electric cooker, existing whole electric pressure cooking saucepans are to prevent that the overheated set temperature controller in the bottom of a pan all must be higher than 140 degree, otherwise cause easily rice particularly the rice amount boil not yet done situation, the inventor also thinks always like this, so that also is provided with this high temperature temperature controller in application number is " there is the electric pressure cooking saucepan of three temperature controllers in the bottom of a pan " patent of 2007100853767 under the bottom of a pan.But the inventor further furtherd investigate and carried out in fact rather than theoretic test through making great efforts to have found 100 degree and 115 to spend two kinds of bimetal strip thermostats in many ways afterwards; test through various schemes detects; find that just the low temperature bimetal strip thermostat about 115 degree can be used as the device that prevents the bottom of a pan overtemperature protection simultaneously; and the rice that cooks when interior pot is stainless steel material is better than the electric pressure cooking saucepan of other types; all adopt aluminum in the other types electric pressure cooking saucepan before the pot; many in recent years electric pressure cooking saucepans adopt stainless steels do in pot, but occurred cooking rice particularly during the rice amount the bottom of a pan boil burnt situation easily.If the temperature controller break-off signal is turned down any such as being transferred to 140 degree, causes rice to boil not yet done phenomenon again easily.And the employing the art of this patent though the temperature controller break-off signal has only about 115 degree, above-mentioned situation could not occur, unforeseeable technique effect really occurred!

The technology that the present invention is combined into a compound temperature controller by the single butterfly shaped dual metal sheet temperature controller of two each tool specific functions also can be directly with two butterfly shaped dual metal sheets with same specified function make one with the identical compound temperature controller of compound temperature controller (1) effect.

The same with the relevant patent before the inventor, the relevant parts of Fig. 2 schematic diagram only relate to this patent principle part, and other accessories do not write out, in this explanation.

The invention provides the electric pressure cooking saucepan of not only easy but also multipotency, the technical foundation condition that promotes the popularization use and provide solid in the national whole world for electric pressure cooking saucepan.

Claims (2)

1, a kind of simple multi-function electric pressure cooker, heat-generating disc (4) is arranged at its pot body bottom, mesopore is arranged in the middle of the heat-generating disc, temperature controller is in the heat-generating disc mesopore, heat-generating disc and interior pot (5) is arranged above the temperature controller, pot has timer on one's body, it is characterized in that, temperature controller in the middle of the heat-generating disc is to place like this: a single function butterfly shaped dual metal sheet temperature controller (2) of connecting timing circuit when kettle temperature arrives the 100 degree left and right sides, one has dual-use function, can control the work in the nominal operation temperature range that remains in the pot, can ensure that again reason is overheated and burn out the butterfly shaped dual metal sheet temperature controller (3) of food in the bottom of a pan, lump together and form a compound temperature controller (1) and make pot the bottom of a pan Elastic Contact in two single temperature controller temperature-sensitive ends and the electric pressure cooking saucepan.

2, according to the described simple multi-function electric pressure cooker of claim 1, it is characterized in that the single butterfly shaped dual metal sheet temperature controller of two each tool specific functions can be directly with two butterfly shaped dual metal sheets with same specified function make one with the identical compound temperature controller of compound temperature controller (1) effect.

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