CN101731937A - Pressure-controlled electric pressure cooker with unburnt cooker bottom - Google Patents
Pressure-controlled electric pressure cooker with unburnt cooker bottom Download PDFInfo
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- CN101731937A CN101731937A CN200910174965A CN200910174965A CN101731937A CN 101731937 A CN101731937 A CN 101731937A CN 200910174965 A CN200910174965 A CN 200910174965A CN 200910174965 A CN200910174965 A CN 200910174965A CN 101731937 A CN101731937 A CN 101731937A
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Abstract
The invention relates to a pressure-controlled electric pressure cooker with an unburnt cooker bottom, wherein a normally-closed temperature controller which is opened at low temperature is arranged on the lower surface of the cooker bottom in an electric pressure cooker, the low-temperature opened temperature controller senses the temperature of the cooker bottom, a contact of the low-temperature opened temperature controller is easy to reset and rework after opened, the low-temperature opened temperature controller, a pressure switch and a heater are electrically connected in series, then connected in parallel with a timer and then connected in series with a time switch, and meanwhile, the timer can be connected in parallel with a normally-opened temperature controller which is closed at the temperature of about 100 DEG C, and the low-temperature opened temperature controller can be compounded with the normally-opened temperature controller which is closed at the temperature of 100 DEG C to form a temperature controller and then contacts the cooker bottom of an inner cooker. The invention solves the problem that the cooker bottom of the voltage-controlled electric pressure cooker is easily burnt.
Description
Affiliated technical field
The present invention relates to a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan.
Background technology
Because the advantage when electric pressure cooking saucepan has significant power saving joint, China's electric pressure cooking saucepan development is very fast, electric pressure cooking saucepan factory is in full flourish, technical staff's One's name is legion, each factory is all improving perfect to the electric pressure cooking saucepan technology by every possible means, strive making our factory's electric pressure cooking saucepan performance to surpass other factories, we can say that the improved technical scheme of this improvements energy all expected having accomplished in order to sale! The existing electric pressure cooking saucepan overwhelming majority of China is pressure-controlled, pressure controlled electric pressure cooker is that the deformation displacement amount that adopts pressure switch to experience behind the pressurized of the bottom of a pan is carried out the work regulation and control, and pressure switch can be controlled pot inner pressure and change and keep pot inner pressure to maintain in the scope when making work.The major advantage of pressure controlled electric pressure cooker is the influence that pot inner pressure is not subjected to height above sea level, makes things convenient for the sale of businessman.But pressure controlled electric pressure cooker when cooking food particularly when boiling the meal of rice amount regular meeting the phenomenon that burn easily in the bottom of a pan appears, have a strong impact on the electric pressure cooking saucepan performance.Each pressure appliance pot factory knows that all this problem is pressure controlled electric pressure cooker one a big persistent ailment, all carried out various improvement, but do not have a pressure appliance pot factory can really solve this persistent ailment so far, neither one those skilled in the art propose the rational and effective technical scheme!
Why electric pressure cooking saucepan the phenomenon that burn in the bottom of a pan occurs easily, is because to be placed on the temperature limiter temperature spot in the bottom of a pan too high, its temperature spot between the 140-160 degree, have in addition arrive 165 degree.This looks like the problem of very simple easy solution, as if the temperature spot of temperature limiter has been reduced just, actually this is not so, the temperature spot of existing electric pressure cooking saucepan temperature limiter can not at will reduce, because temperature spot be reduced to 140 the degree after, electric pressure cooking saucepan another problem can occur again: boil not yet done when particularly boiling the meal of rice amount when cooking often.So this crag-fast problem is perplexing whole electric pressure cooking saucepan industry circle and those skilled in the art always, it is long-standing to become one of pressure controlled electric pressure cooker.It is believed that this situation is the unmodifiable inherent shortcoming of pressure controlled electric pressure cooker.
Summary of the invention
In order to overcome the defective of electric pressure cooking saucepan, the invention provides a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan.The technical solution adopted for the present invention to solve the technical problems is: the normally closed type temperature controller (being called for short low disconnected temperature controller) that has a low temperature to disconnect in the electric pressure cooking saucepan below the pot the bottom of a pan, low disconnected temperature controller is experienced cooking bottom temperature, reset easily after low disconnected temperature controller contact disconnects and rework, low disconnected temperature controller and pressure switch and heater three electricity polyphone, it is in parallel after the three contacts with timer, back in parallel and time switch polyphone, simultaneously, timer can be contacted one at 100 temperature controllers open in usual of spending left and right sides temperature closures, and low disconnected temperature controller contacts with the interior pot of the bottom of a pan after can being combined into a compound temperature controller with the temperature controllers open in usual of 100 degree closures.
The invention has the beneficial effects as follows: solved long-standing that electric pressure cooking saucepan industry circle is perplexing always, pressure controlled electric pressure cooker is guaranteed not can burning foods, can make the pressure controlled electric pressure cooker boil food easily again, and technical matters is simple and convenient.
Description of drawings
Fig. 1 is an embodiment of the present invention schematic diagram
Fig. 2 is a kind of circuit theory schematic diagram of the mat woven of fine bamboo strips of the present invention.
Fig. 3 is second kind of circuit theory schematic diagram of the present invention.
The normally closed type temperature controller (low disconnected temperature controller) that pot 9. low temperature disconnect in 5. (adding) hot device 6. pressure switches of 1. shells, 2. outer pots, 3. tortuous support 4. elastic displacement parts, 7. connecting rods 8. among the figure is time switch 11. timers 12. temperature controllers open in usual 10.
The specific embodiment
The inventor furthers investigate the use operation and the circuit design of existing pressure controlled electric pressure cooker product, and the temperature limiter of existing pressure controlled electric pressure cooker all is to carry out one-time action when high temperature dot.Though the adjustable pot inner pressure of pressure switch but can't the sensing cooking bottom temperature, and food burns and generally there is no direct simple causality with pot inner pressure.Existing pressure controlled electric pressure cooker all is heater circuit to be disconnected forever stopping heating once when cooking bottom temperature is too high.The present invention negates the circuit design theory of existing pressure controlled electric pressure cooker absolutely, antipodal low temperature heating mode has repeatedly been proposed, the inventor carries out actual tests under the various different conditions repeatedly according to this invention pattern, the test of having carried out normal voltage and too high voltages and having crossed non-normal working conditions such as low-voltage, the result proves that pattern of the present invention has essential difference than the old model of existing pressure controlled electric pressure cooker, has obtained unforeseeable technique effect.Structure of the present invention can have multiple pattern, and Fig. 1 is one kind of.As shown in Figure 1, pressure controlled electric pressure cooker is divided into (1) three layer on interior pot (8), outer pot (2) and shell, interior pot dress food, and interior pot is placed on above the heating element, can have through hole in the middle of the heating element, and mesopore is installed temperature controller, temperature controller and interior pot of the bottom of a pan Elastic Contact.It comes the pressure of pot (8) in the sensing regulation and control by pressure switch (6).Pot temperature in the contact sensing of the pot the bottom of a pan in low disconnected temperature controller (9) and the electric pressure cooking saucepan, its break-off signal decide according to different model, can select in 105--135 degree (this paper all be degree centigrade), and is the highest below 140.Low break-off signal of breaking temperature controller should be to determine after this temperature controller is loaded onto electric pressure cooking saucepan fuselage coupling again, and temperature range is to work as the interior water temperature of pot between the 110--125 degree preferably.Not only its break-off signal is more much lower than traditional temperature limiter for low disconnected temperature controller, and makes disconnection--replacing repeatedly of closure--disconnections--closure in the course of work of cooking into by the disposable disconnection of traditional mode.When working at ordinary times, product of the present invention can alternately be regulated and control operating temperature pressure by pressure switch (6) regulation and control operating pressure or by low disconnected temperature controller (9) adjusting temperature, pressure or the two.The operating pressure of pressure switch regulation and control should be mated with low disconnected temperature controller break-off signal, but pressure switch is comparatively suitable prior to low disconnected temperature controller work, that is to say, when a large amount of moisture content and don't the sticking the bottom of a pan are arranged in the pot, pairing temperature spot was lower than the temperature spot that low disconnected temperature controller disconnects when pressure switch contact disconnected, and pressure switch is action earlier.Different with the electric pressure cooking saucepan of Temperature Control Type, pressure-controlled operating pressure no matter in the plains region or the highlands all be identical, so the electric pressure cooking saucepan of manufacturer production can make things convenient for use throughout the country.In the plains region, when the water in the pot arrived the 70kPa operating pressure, the temperature of water was about 115 degree in the pot.When but the food contact the bottom of a pan was arranged, when particularly pot was glued in the bottom of a pan, it is high, high sometimes that the temperature that cooking bottom temperature specific pressure switch is reflected is wanted.When cooking bottom temperature arrived certain altitude, low disconnected temperature controller (9) can in time disconnect, because its break-off signal is lower, so the phenomenon of burning foods can not occur; And because the low disconnected temperature controller after the disconnection of contact can be connected as early as possible, so can reheat again in the near future when cooking bottom temperature reduces, replace repeatedly, up to timer (11) set time-up, time switch (10) contact disconnects, and the work of cooking is finished, and heating stops.This moment, food was well-done fully.With the interior the bottom of a pan contact, heating element also can not opened mesopore to low disconnected temperature controller of the present invention in the mesopore that is placed on heater as shown in Figure 1, and low disconnected temperature controller can be placed on heating element or outer pot appropriate location, and the interior pot the bottom of a pan is the direct low temperature controller that breaks of contact.Certainly the accuracy of its sensing cooking bottom temperature is poorer than the accuracy of Fig. 1, only uses when not strict requiring.
Since the stainless steel poor thermal conductivity, the easy burning foods of stainless-steel pan.The present invention is specially adapted to the interior pot that stainless steel material is made.
Fig. 2 is a kind of circuit theory schematic diagram of the mat woven of fine bamboo strips of the invention process.Hang down disconnected temperature controller (9) and pressure switch (6) and heating element (5) three electricity polyphone, in parallel after the three contacts with timer (11), back in parallel and time switch (10) polyphone.Like this, electric current one tunnel flows through through low disconnected temperature controller, pressure switch, heating element, and one the tunnel flows through through timer (11), together contacts with time switch behind two road current parallels, time switch (11) lumps together with timer, and controlled by timer (11) its turn-off time.Be provided with earlier when cooking the time what, promptly be that timer is transferred to a certain position, the electric current timer of flowing through promptly calculates immediately and cooks the time; When being heated to the operating pressure of pressure switch setting, pressure switch contact disconnects, heating stops, because of pressure after the thermal inertia drops to certain certain value gradually, the pressure switch contact closure reheats ... replace repeatedly, after arriving the time of timer setting, time switch disconnects, and heating work stops.When food was adhered in the bottom of a pan, cooking bottom temperature raise very fast, the pressure that the interior also no show pressure switch contact of pot this moment disconnects, and pressure switch contact is still closed, and heating is still being carried out.When arriving the temperature spot of low disconnected temperature controller (9) setting, low disconnected temperature controller contact disconnects, and heating stops, and temperature descends; Low disconnected temperature controller contact is closed again after dropping to uniform temperature, reheats ....
Because food just begins to boil when seething with excitement near water, how much needed time of seething with excitement from the room temperature to water must calculate according to food in the pot, cumbersome.The technical scheme of Fig. 3 can solve this trouble.As shown in Figure 3, a temperature controller open in usual (12) and timer polyphone in 100 degree (being decided to be 100 degree) left and right sides temperature closure with water boiling, in a period of time that plugs in, electric current only flow through heating element circuit and the timer circuit of not flowing through; When left and right sides temperature is spent in arrival in the pot 100, temperature controller open in usual (12) closing of contact, timer just begins to calculate cooks the time, like this no matter the interior food of pot how much, all is easy to set and cooks the time.One promptly opens circuit to setting-up time time switch (10), and heating work stops.Temperature controller open in usual (12) can be made a compound temperature controller with low disconnected temperature controller (9) and be contained in the heating element mesopore and interior pot the bottom of a pan Elastic Contact.
Temperature controller of the present invention can use bimetal strip thermostat, also the temperature controller made of available sensors chip electronic circuit.Timer can use electrodynamic type, Mainspring type or electronic type.
Claims (7)
1. pressure controlled electric pressure cooker that does not burn the bottom of a pan, it is characterized in that having below the pot the bottom of a pan in the electric pressure cooking saucepan normally closed type temperature controller (being called for short low disconnected temperature controller) (9) of a low temperature disconnection, low disconnected temperature controller is experienced cooking bottom temperature, reset easily after low disconnected temperature controller contact disconnects and rework, low disconnected temperature controller and pressure switch (6) and heater (5) three electricity polyphone, in parallel after the three contacts with timer (11), back in parallel and time switch (10) polyphone.
2. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, it is characterized in that timer the temperature controllers open in usual (12) of can contacting in 100 degree left and right sides temperature closures, low disconnected temperature controller can with contact with the interior pot the bottom of a pan after temperature controller open in usual (12) make a compound temperature controller.
3. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, it is characterized in that temperature controller can be the temperature controller that bimetal strip thermostat or sensor chip electronic circuit are made.
4. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, low disconnected temperature controller break-off signal is selected in the 105--135 degree when it is characterized in that enough moisture content and the bottom of a pan non-stick pan are arranged in the electric pressure cooking saucepan pot, and temperature range is that water temperature is selected between the 110--125 degree in the pot preferably.
5. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, it is characterized in that alternately to regulate and control operating temperature pressure by pressure switch (6) regulation and control operating pressure or by low disconnected temperature controller (9) adjusting temperature, pressure or the two when electric pressure cooking saucepan is worked at ordinary times.
6. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, pressure switch is prior to low disconnected temperature controller work regulation and control pot inner pressure when it is characterized in that enough moisture content and the bottom of a pan non-stick pan are arranged in the electric pressure cooking saucepan pot.
7. according to the described a kind of pressure controlled electric pressure cooker that does not burn the bottom of a pan of claim 1, it is characterized in that the electric pressure cooking saucepan timer can be electrodynamic type or Mainspring type or electronic timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910174965A CN101731937A (en) | 2008-11-15 | 2009-10-25 | Pressure-controlled electric pressure cooker with unburnt cooker bottom |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810181804.0 | 2008-11-15 | ||
| CN200910174965A CN101731937A (en) | 2008-11-15 | 2009-10-25 | Pressure-controlled electric pressure cooker with unburnt cooker bottom |
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| Publication Number | Publication Date |
|---|---|
| CN101731937A true CN101731937A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910174965A Pending CN101731937A (en) | 2008-11-15 | 2009-10-25 | Pressure-controlled electric pressure cooker with unburnt cooker bottom |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102961039A (en) * | 2012-11-27 | 2013-03-13 | 叶娟 | Timing system for electric pressure steamer |
| CN103330473A (en) * | 2013-06-07 | 2013-10-02 | 李柏盛 | Directional accumulated-heat guiding rice cooker |
| CN105511522A (en) * | 2014-09-25 | 2016-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooker and heating control device and method thereof. |
-
2009
- 2009-10-25 CN CN200910174965A patent/CN101731937A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102961039A (en) * | 2012-11-27 | 2013-03-13 | 叶娟 | Timing system for electric pressure steamer |
| CN103330473A (en) * | 2013-06-07 | 2013-10-02 | 李柏盛 | Directional accumulated-heat guiding rice cooker |
| CN103330473B (en) * | 2013-06-07 | 2015-11-18 | 李柏盛 | A kind of electric cooker of accumulation of heat directional stream-guidance |
| CN105511522A (en) * | 2014-09-25 | 2016-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooker and heating control device and method thereof. |
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Application publication date: 20100616 |