CN201207144Y - Pressure and temperature monitoring apparatus for electrical heating cook - Google Patents
Pressure and temperature monitoring apparatus for electrical heating cook Download PDFInfo
- Publication number
- CN201207144Y CN201207144Y CNU2008200473429U CN200820047342U CN201207144Y CN 201207144 Y CN201207144 Y CN 201207144Y CN U2008200473429 U CNU2008200473429 U CN U2008200473429U CN 200820047342 U CN200820047342 U CN 200820047342U CN 201207144 Y CN201207144 Y CN 201207144Y
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Abstract
The utility model provides a pressure temperature measuring and controlling device used for the electric heating cookers such as electric pressure cookers, electric rice cookers and soup porridge cookers; the pressure temperature measuring and controlling device comprises a temperature sensor (2) arranged on the outer lateral surface of a heated inner liner (1), an electric heater (3) arranged on the bottom of the heated inner liner (1) and a controller (4) used for controlling the heating power or heating duty cycle of the electric heater (3); wherein, the signal output end of the temperature sensor (2) is connected with the input end of the controller (4); the output end of the controller (4) is electrically connected with the electric heater (3); the temperature sensor (2) is arranged on the outer lateral surface of the heated liner (1) and is arranged on the position which is lower than the upper edge of the liner in the distance of 1/4 height of the inner liner and is higher than the bottom of the liner in the distance of 1/4 height of the inner liner. The pressure temperature measuring and controlling device not only can improve the measuring and controlling accuracy, but also can realize the automatic detection and control towards the temperature and pressure of the food in the heated liner within the entire temperature or pressure range; the pressure temperature measuring and controlling device used for the electric heating cookers adopts a very simple mode to realize the stepless control on the temperature and pressure.
Description
Technical field
The utility model is a kind of pressure and temperature measurement and control instrument that is used for electric heating cookers such as electric pressure cooking saucepan, electric cooker, soup and gruel pot, belongs to the innovative technology of electric heating cooker pressure and temperature measurement and control instrument.
Background technology
The measurement and control of temperature of electric heating cookers such as existing electric pressure cooking saucepan, electric cooker, soup and gruel pot is nothing more than being to take to carry out thermometric to being heated the inner bag bottom center, perhaps to pot cover, comprise that the protrusion such as the thermometric post that go deep into the inner bag direction from pot cover carry out thermometric, perhaps have both at the same time.
Wherein, carry out the structure of thermometric for being heated the inner bag bottom center, the shortcoming of its existence is to be difficult to avoid the heat radiation of heater members (as heat-generating disc) to be disturbed, and can only be confined to obtain the instant messages of the bottom temp of pot interior food, because food for meeting gelatinization or thickness in the gastronomical process, the difference of the real-time temperature on bottom and top can reach more than 40 degree in its heating process, so limited from the quantity of information of inner bag bottom thermometric acquisition.
For the structure of carrying out thermometric from the pot cover position, the shortcoming of its existence is except the long lead-in wire of needs, also unavoidably producing sensor lead will be through renovating the damaged risk of prolonged and repeated bending at rotating shaft position, and for the electric heating cooker of separate type pot cover class, this class thermometric structure or can not use, easy the to be contaminated contraposition electrode contacts of exposure is just arranged, reduced reliability.As the Chinese patent publication number is disclosed a kind of electric pressure cooking saucepan among the CN2870672Y.
In addition, the Chinese patent publication number is to disclose a kind of novel temperature control electric cooker among the CN2561320Y, its thermometric structure is to lay bimetallic strip Kick type temperature detect switch (TDS) in the lateral location of electric cooker contact inner bag, the shortcoming of its existence is that detection and control accuracy are very poor, more can not satisfy the pressure controlled requirement of electric pressure cooking saucepan.And for example the Chinese patent publication number is disclosed a kind of electric pressure cooking saucepan among the CN2887196Y (application number is 200620057894.9), its thermometric structure be adopt that three mechanical temperature controllers are on the wall that isosceles triangle evenly is arranged on outer pot, the temperature-sensitive face be close in the structure of pot, its setting height(from bottom) is 1/2～1/3 of an interior pot height.The shortcoming that this scheme exists is to use three temperature controllers, cost height.And the precision of temperature controller is low, return difference is big, far can not satisfy the accuracy requirement of Temperature Control Type electric pressure cooking saucepan, in addition, its control mode can only be to cut off the power supply after arriving a certain fixed temperature, can not provide to adapt to pressure that various different foods change provides required continuous temperature and pressure curve with temperature requirement and in whole temperature and pressure scopes of cooking meticulous cooking function.
The utility model content
The purpose of this utility model is to consider the problems referred to above and a kind of observing and controlling precision that can not only improve is provided, and can realize carrying out automatic detection and control in whole temperature and/or the pressure limit to being heated food pressure in the inner bag and/or temperature, realize pressure and/or temperature are carried out the pressure and the temperature measurement and control instrument of the electric heating cooker of stepless control in open-and-shut mode.
The technical solution of the utility model is: the controller that comprises the temperature sensor that is arranged on the lateral surface that is heated inner bag, the electric heater that is arranged on the bottom that is heated inner bag, control electric heater heating power or heating dutycycle, wherein the signal output part of temperature sensor is electrically connected with the input end of controller, and the output terminal of controller is electrically connected with electric heater.
The said temperature sensor is arranged on the lateral surface that is heated inner bag, apart from its coboundary 1/4 inner bag height to position apart from its bottom 1/4 inner bag height.
The said temperature sensor is a temp-sensitive sensor.
The said temperature sensor is a thermistor (temperature) sensor, or thermocouple sensor, or the heat-sensitive semiconductive sensor.
Above-mentioned controller is a single-chip microcomputer.
The input end of above-mentioned controller also is connected with user's control input device.
Above-mentioned user's control input device is a push-button input device, or is touch-type input device.
The output terminal of above-mentioned controller also is connected with display device.
Above-mentioned display device is the LED display device, or is the LCD display device.
The utility model is because to adopt directly lateral surface, the altitude range that is heated inner bag be the structure that thermometric is carried out in zone between inner bag height 1/4 to 3/4 position, with measured temperature as inner bag temperature inside and pressure information, go to adjust the heating power of electric heater or heat dutycycle by controller, preferably resolve the electric cooking appliance temperature control of separate type pot cover class, the temperature detection problem of pressure control.The utility model is used for electric pressure cooking saucepan, because the vapour pressure and the temperature of saturated steam have unique corresponding relation, so can control the purpose of the working pressure of electric pressure cooking saucepan inside being carried out stepless voltage regulation control to the food temperature of heated electric pressure cooking saucepan inner bag by detected temperature value, thereby realize stepless voltage regulation control and Presentation Function to the pressure of electric pressure cooking saucepan in open-and-shut mode to reach.The utility model detects automatically and controls the carrying out that is heated food temperature in the inner bag and pressure and carries out in whole temperature or the pressure limit according to detected temperature value, rather than, only can realize control automatically at a certain fixed temperature or spot pressure as temperature control devices such as mechanical type bimetal plate temperature controling switch.The utility model both had been applicable to pot cover separate type electric cooking appliance, be applicable to the flip-shell electric cooking appliance again, saved the length that connects lead, exempted and renovated the fault that bending brings repeatedly, the heat radiation of having avoided the bottom thermometric to be subjected to heat-generating disc is disturbed, the interference of also having avoided cap, pot edge heat radiation to produce has improved the observing and controlling performance significantly.The utility model is a kind of reasonable in design, and usability is good, the pressure of convenient and practical electric heating cooker and temperature measurement and control instrument.Can be widely used in electric heating cookers such as electric pressure cooking saucepan, electric cooker, soup and gruel pot and carry out the observing and controlling of pressure and/or temperature.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is heated the structural representation in the inner bag outside for the utility model temperature sensor is arranged on.
Embodiment
Embodiment:
Structural representation of the present utility model as shown in Figure 1, 2, comprise the heating power of the temperature sensor 2 that is arranged on the lateral surface that is heated inner bag 1, the electric heater 3 that is arranged on the bottom that is heated inner bag 1, control electric heater 3 or the controller 4 of heating dutycycle, wherein the signal output part of temperature sensor 2 is electrically connected with the input end of controller 4, and the output terminal of controller 4 is electrically connected with electric heater 3.Said temperature sensor 2 is a temp-sensitive sensor.It can be the thermistor (temperature) sensor of making armouring with copper or aluminium, or thermocouple sensor, or the heat-sensitive semiconductive sensor.In the present embodiment, temperature sensor 2 is a thermistor (temperature) sensor.Above-mentioned controller 4 is a single-chip microcomputer.
In the present embodiment, be to realize best control effect, said temperature sensor 2 be arranged on the lateral surface that is heated inner bag 1, apart from its coboundary 1/4 inner bag height to position apart from its bottom 1/4 inner bag height.In above-mentioned interval temperature sensor is set, both can avoid the influence that the heat radiation of pot cover, pot edge produces thermometric, the hyperthermia radiation that can avoid the bottom heat-generating disc again disturbs, compare with mode with existing various thermometric structures, the utility model more can reflect true temperature and the saturation vapor pressure that is heated object in the inner bag.
Use for ease of the user, the input end of above-mentioned controller 4 also is connected with user's control input device 6.Above-mentioned user's control input device 6 is a push-button input device, or is touch-type input device.In the present embodiment, user's control input device 6 is a push-button input device.
For making the user can see the duty of electric heating cooker intuitively, the output terminal of above-mentioned controller 4 also is connected with display device 5.Above-mentioned display device 5 is the LED display device, or is the LCD display device.In the present embodiment, display device 5 is the LED display device.
Principle of work of the present utility model is as follows: because the vapour pressure and the temperature of saturated steam have unique corresponding relation, so can control the purpose of the working pressure of electric pressure cooking saucepan inside being carried out stepless voltage regulation control to reach to the food temperature of heated electric pressure cooking saucepan inner bag by detected temperature value.Present embodiment is by being contained in the lateral surface that is heated inner bag 1, the altitude range that is heated inner bag 1 with 2 pairs of temperature sensors that inner bag closely contacts carries out thermometric for the zone between 1/4 to 3/4 position of its height h, measured temperature is delivered to controller 4 as inner bag temperature inside and pressure information, go to control the heating power of electric heater 3 and other related devices or heat dutycycle by controller 4, reach by a control pot courage temperature inside to realize that food temperature and the pressure that is heated in the inner bag is carried out the purpose that the carrying out in whole temperature or the pressure limit detects automatically and control.
The utility model is used for electric pressure cooking saucepan, can carry out stepless voltage regulation control to the working pressure of electric pressure cooking saucepan inside, thereby has realized stepless voltage regulation control and Presentation Function to the pressure of electric pressure cooking saucepan in open-and-shut mode.
Claims (9)
1, a kind of pressure of electric heating cooker and temperature measurement and control instrument, it is characterized in that comprising the heating power of the temperature sensor (2) that is arranged on the lateral surface that is heated inner bag (1), the electric heater (3) that is arranged on the bottom that is heated inner bag (1), control electric heater (3) or the controller (4) of heating dutycycle, wherein the signal output part of temperature sensor (2) is electrically connected with the input end of controller (4), and the output terminal of controller (4) is electrically connected with electric heater (3).
2, the pressure of electric heating cooker according to claim 1 and temperature measurement and control instrument, it is characterized in that said temperature sensor (2) be arranged on the lateral surface that is heated inner bag (1), apart from its coboundary 1/4 inner bag height to position apart from its bottom 1/4 inner bag height.
3, the pressure of electric heating cooker according to claim 1 and 2 and temperature measurement and control instrument is characterized in that said temperature sensor (2) is a temp-sensitive sensor.
4, the pressure of electric heating cooker according to claim 3 and temperature measurement and control instrument is characterized in that said temperature sensor (2) is a thermistor (temperature) sensor, or thermocouple sensor, or the heat-sensitive semiconductive sensor.
5, the pressure of electric heating cooker according to claim 4 and temperature measurement and control instrument is characterized in that above-mentioned controller (4) is a single-chip microcomputer.
6, the pressure of electric heating cooker according to claim 5 and temperature measurement and control instrument is characterized in that the input end of above-mentioned controller (4) also is connected with user's control input device (6).
7, the pressure of electric heating cooker according to claim 6 and temperature measurement and control instrument is characterized in that above-mentioned user's control input device (6) is push-button input device, or are touch-type input device.
8, the pressure of electric heating cooker according to claim 7 and temperature measurement and control instrument is characterized in that the output terminal of above-mentioned controller (4) also is connected with display device (5).
9, the pressure of electric heating cooker according to claim 8 and temperature measurement and control instrument is characterized in that above-mentioned display device (5) is the LED display device, or are the LCD display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200473429U CN201207144Y (en) | 2008-05-06 | 2008-05-06 | Pressure and temperature monitoring apparatus for electrical heating cook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200473429U CN201207144Y (en) | 2008-05-06 | 2008-05-06 | Pressure and temperature monitoring apparatus for electrical heating cook |
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| Publication Number | Publication Date |
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| CN201207144Y true CN201207144Y (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200473429U Expired - Fee Related CN201207144Y (en) | 2008-05-06 | 2008-05-06 | Pressure and temperature monitoring apparatus for electrical heating cook |
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| CN (1) | CN201207144Y (en) |
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2008
- 2008-05-06 CN CNU2008200473429U patent/CN201207144Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20160506 |