CN110209218B - Magnetic suspension temperature measuring device and cooking equipment - Google Patents
Magnetic suspension temperature measuring device and cooking equipment Download PDFInfo
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- CN110209218B CN110209218B CN201811520895.6A CN201811520895A CN110209218B CN 110209218 B CN110209218 B CN 110209218B CN 201811520895 A CN201811520895 A CN 201811520895A CN 110209218 B CN110209218 B CN 110209218B
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- 238000010411 cooking Methods 0.000 title claims abstract description 68
- 239000000725 suspension Substances 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 25
- 238000005339 levitation Methods 0.000 claims description 24
- 230000005669 field effect Effects 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000009529 body temperature measurement Methods 0.000 claims description 18
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 101710084464 Purine nucleoside phosphorylase DeoD-type 2 Proteins 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 235000013305 food Nutrition 0.000 description 5
- 238000010025 steaming Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 102000004213 Neuropilin-2 Human genes 0.000 description 1
- 108090000770 Neuropilin-2 Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/146—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations arrangements for moving thermometers to or from a measuring position
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2207/00—Application of thermometers in household appliances
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Automation & Control Theory (AREA)
- Induction Heating Cooking Devices (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a magnetic suspension temperature measuring device and cooking equipment, which comprise a temperature sensor with a permanent magnet, a magnetic force generator and a controller, wherein the temperature sensor is arranged in the cooking equipment, the magnetic force generator is arranged at the top or the bottom of the cooking equipment, and the controller is respectively connected with the magnetic force generator and the temperature sensor and is used for adjusting the position of the temperature sensor by controlling the magnetic force of the magnetic force generator. According to the invention, the position of the temperature sensor in the cooking equipment can be changed, so that the actual temperatures of different layers of the cooking equipment are obtained, the controller can control the heating modes of heating pipes at different positions through the difference between the actual temperatures of the different layers of the cooking equipment and the target temperature, the difference between the actual temperatures of the different positions and the target temperature is reduced, and the effect of reasonably controlling the whole temperature field in the cooking equipment is achieved. In addition, cooking of different layers and different temperatures can be realized, and user experience is improved.
Description
Technical Field
The invention belongs to the technical field of temperature sensors, and particularly relates to a magnetic suspension temperature measuring device and cooking equipment.
Background
Temperature field accurate control is a core requirement of oven design, temperature field control not only depends on reasonable combination of heating pipes, but also depends on the number and positions of temperature sensors, the requirement is hardly met by a single temperature sensor, and cost is increased by a plurality of temperature sensors.
At present, the oven on the market has the problem of inaccurate temperature, and the temperature of the oven is difficult to control, so that the problems of scorching of food and dry mouthfeel of the food easily occur during use, and the mouthfeel of cooked food is influenced. In addition, when the existing oven is used for cooking multi-layer/multi-quantity foods, the temperature difference between different points is larger (20 ℃ -30 ℃) in the working process of the oven on the market due to inconsistent cooking degree of foods which are not accurately cooked due to uneven baking temperature. When the upper, middle and lower three layers of dishes are different, the three dishes have different temperature requirements, the oven on the market at present can not realize the temperature field control of different layers at the same time, and when the dishes are cooked separately, the waiting time cost is very high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a magnetic suspension temperature measuring device and cooking equipment.
The technical scheme of the invention is realized as follows:
the embodiment of the invention provides a magnetic suspension temperature measuring device which comprises a temperature sensor with a permanent magnet, a magnetic force generator and a controller, wherein the temperature sensor is arranged in cooking equipment, the magnetic force generator is arranged at the top or the bottom of the cooking equipment, and the controller is respectively connected with the magnetic force generator and the temperature sensor and is used for adjusting the position of the temperature sensor by controlling the magnetic force of the magnetic force generator.
Preferably, the magnetic force generator is provided one, and the magnetic force generator is provided on a top wall or a bottom wall of the cooking apparatus and is located directly above or directly below the temperature sensor.
Preferably, two of the magnetic force generators are provided, and the two magnetic force generators are provided on the top wall and the bottom wall of the cooking apparatus and are located directly above and below the temperature sensor, respectively.
Preferably, the cooking device further comprises springs, wherein the springs are arranged on the upper side and the lower side of the temperature sensor, and the temperature sensor is connected with the top wall and the bottom wall of the cooking device through the springs on the upper side and the lower side.
Preferably, the control circuit of the magnetic force generator comprises an electromagnet circuit and a voltage regulating circuit, wherein the electromagnet circuit is provided with an electromagnet, one end of the electromagnet circuit is connected with the controller through one end of the voltage regulating circuit, and the other end of the electromagnet circuit is directly connected with the controller.
Preferably, the electromagnet circuit further comprises a third optocoupler U3, an inverter, a third NPN triode N3, a second zener diode D2, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17; the first end of the third optocoupler U3 is connected with a power supply through a fifteenth resistor R15, the second end of the third optocoupler U3 is connected with a controller through an inverter, the third end of the third optocoupler U is connected with a voltage regulating circuit, one path of the fourth end of the third optocoupler U is grounded through a seventeenth resistor R17, the other path of the fourth end of the third optocoupler U is connected with a base electrode of a third NPN triode N3 through a sixteenth resistor R16, a collector electrode of the third NPN triode N3 is connected between the third optocoupler U3 and the voltage regulating circuit through a second voltage stabilizing diode D2, the second voltage stabilizing diode D2 is connected with an electromagnet in parallel, and an emitter electrode of the third NPN triode N3 is grounded.
Preferably, the voltage regulating circuit includes a first PNP type triode P1, a first NPN type triode N1, a second PNP type triode P2, a second NPN type triode N2, a first MOS field effect transistor M1, a first overvoltage protection diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first electrolytic capacitor E1, a second electrolytic capacitor E2, and a second inductor L2; the other end of the sixth resistor R6 is connected with the base electrode of the first PNP type triode P1, the emitter electrode of the first PNP type triode P1 is connected with a +5V power supply, the collector electrode of the first PNP type triode P1 is connected with the base electrode of the second NPN type triode N2 through an eighth resistor R8, one path of the collector electrode of the second NPN type triode N2 is sequentially connected with an electromagnet circuit through a fourth resistor R4, a first MOS field effect transistor M1 and a second inductor L2, the other path of the second NPN type triode N1 is respectively connected with the base electrode of the first NPN type triode N1 and the second PNP type triode P2, the collector electrode of the first NPN type triode N1 is connected between the fourth resistor R4 and the first MOS field effect transistor M1, the emitter electrode of the second PNP type triode P2 is connected with the common-type triode R7, the common-connection of the first NPN 9 and the second P2 is connected with the second N2 of the first NPN type triode E2, the common-connection of the third resistor R3 and the second NPN 2 is connected with the second E2, the common-connection of the other end of the first NPN type triode E2 and the second E2 is connected with the first N2, the common-connection of the first NPN type triode E2 and the second E2 is connected with the second E2; one end of the first resistor R1 is connected with the base electrode of the first PNP triode P1, and the other end of the first resistor R1 is connected with the emitter electrode of the first PNP triode P1; one end of the fourth resistor R4 is also connected with a power supply.
Preferably, the control circuit of the temperature sensor further comprises a second MOS field effect transistor Q2, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and an eighteenth capacitor C18; one path of the first end of the temperature sensor is connected with the controller through a twenty-fourth resistor R24, a twenty-second resistor R22 and a twenty-first resistor R21, the other path is connected with the controller through a twenty-fifth resistor R25, the first end of the second MOS field effect transistor Q2 is connected between the twenty-fourth resistor R24 and the twenty-second resistor R22 in parallel, the second end of the second MOS field effect transistor Q2 is connected between the twenty-second resistor R22 and the twenty-first resistor R21 in parallel, the third end of the third MOS field effect transistor Q2 is connected with one end of a third resistor R23, the other end of the third resistor R23 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, one end of the eighteenth capacitor C18 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, the other end of the eighteenth capacitor C18 is connected with the second end of the temperature sensor in common ground.
The embodiment of the invention also provides cooking equipment, which comprises the magnetic suspension temperature measuring device, wherein the magnetic suspension temperature measuring device is arranged in the cooking equipment.
Compared with the prior art, the temperature sensor with the permanent magnet and the magnetic force generator are arranged in the cooking equipment, the magnetic force of the magnetic force generator is controlled by the controller, the temperature sensor is controlled to move, and the position of the temperature sensor in the cooking equipment can be changed, so that the actual temperatures of different layers of the cooking equipment are obtained, the controller can control the heating modes of heating pipes at different positions through the difference between the actual temperatures of different layers of the cooking equipment and the target temperature, the difference between the actual temperatures of different positions and the target temperature is reduced, and the effect of reasonably controlling the whole temperature field in the cooking equipment is achieved. In addition, cooking of different layers and different temperatures can be realized, and user experience is improved.
Drawings
FIG. 1 is a schematic diagram of a magnetic levitation temperature measurement device according to embodiment 1 of the present invention;
FIG. 2 is a circuit diagram of an electromagnet circuit in a magnetic levitation temperature measurement device according to embodiment 1 of the present invention;
FIG. 3 is a circuit diagram of a voltage regulating circuit in the magnetic levitation temperature measurement device according to embodiment 1 of the present invention;
FIG. 4 is a circuit diagram of a control circuit of a temperature sensor in the magnetic levitation temperature device according to embodiment 1 of the present invention;
FIG. 5 is a first diagram of a control circuit of the magnetic levitation temperature measurement device according to embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of a magnetic levitation temperature measurement device according to embodiment 2 of the present invention;
FIG. 7 is a diagram showing a state of use of the magnetic levitation temperature device according to embodiment 2 of the present invention;
FIG. 8 is a second state diagram of the magnetic levitation temperature measurement device according to embodiment 2 of the present invention;
FIG. 9 is a second control circuit diagram of the magnetic levitation temperature measurement device according to embodiment 1 of the present invention.
The reference numerals are as follows:
1-temperature sensor, 2-magnetic force generator, 21-electromagnet, 22-electromagnet circuit, 23-voltage regulating circuit, 3-controller, 4-cooking equipment and 5-spring.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Embodiment 1 of the present invention provides a magnetic levitation temperature measurement device, as shown in fig. 1, comprising a temperature sensor 1 with a permanent magnet, a magnetic force generator 2 and a controller 3, wherein the temperature sensor 1 is arranged in a cooking device 4, the magnetic force generator 2 is arranged at the top or bottom of the cooking device 4, and the controller 3 is respectively connected with the magnetic force generator 2 and the temperature sensor 1 for adjusting the position of the temperature sensor 1 by controlling the magnetic force of the magnetic force generator 2.
The cooking device 4 is an oven, a steam box or a steaming and baking integrated machine.
Wherein the magnetic force generator 2 is provided one, and the magnetic force generator 2 is provided on the top wall or the bottom wall of the cooking apparatus 4 and is located directly above or directly below the temperature sensor 1.
The control circuit of the magnetic force generator 2 comprises an electromagnet circuit 22 provided with an electromagnet 21 and a voltage regulating circuit 23, wherein one end of the electromagnet circuit 22 is connected with the controller 3 through one end of the voltage regulating circuit 23, and the other end is directly connected with the controller 3.
The controller 3 can control the magnetic force of the electromagnet 21 of the magnetic force generator 2, so that the temperature sensor 1 is controlled to move to the corresponding position, and the magnetic force generator 2 can control the temperature sensor 1 to move up and down to detect the temperature of different layers.
The cooking appliance further comprises springs 5, wherein the springs 5 are arranged at two sides and are respectively positioned at the upper side and the lower side of the temperature sensor 1, and the temperature sensor 1 is respectively connected with the top wall and the bottom wall of the cooking appliance 4 through the springs 5 at the upper side and the lower side.
The arrangement of the spring 5 ensures that the temperature sensor 1 with the permanent magnet moves up and down under the combined action of magnetic force and spring force, ensures that the temperature sensor 1 moves in the vertical direction and does not move transversely, thereby ensuring the accuracy of the position movement of the temperature sensor 1 and the measurement precision.
The position of the temperature sensor of the existing cooking apparatus cannot be moved, and the existing cooking apparatus is generally used in layers, generally divided into an upper layer, a Zhong Ceng layer, and a lower layer. The controller 3 controls the generation intensity of the magnetic force generator 2, so that the suspension height of the temperature sensor 1 is changed, and the real-time temperature of the upper, middle and lower layers can be monitored, thereby realizing the control of the different temperatures of the three layers. The temperature sensor 1 can be suspended at any point within the upper and lower limits as required, thereby realizing multi-point temperature monitoring.
The control circuit of the magnetic force generator 2 includes an electromagnet circuit 22 and a voltage regulating circuit 23.
Referring to fig. 2, the electromagnet circuit 22 includes an electromagnet 21, a third optocoupler U3, an inverter, a third NPN transistor N3, a second zener diode D2, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17.
Specifically, the first end of the third optocoupler U3 is connected to the power supply through a fifteenth resistor R15, the second end is connected to the controller 3 through an inverter, the third end is connected to the voltage regulating circuit 23, one path of the fourth end is grounded through a seventeenth resistor R17, the other path is connected to the base of the third NPN triode N3 through a sixteenth resistor R16, the collector of the third NPN triode N3 is connected between the third optocoupler U3 and the voltage regulating circuit 23 through a second zener diode D2, the second zener diode D2 is connected in parallel with the electromagnet 21, and the emitter of the third NPN triode N3 is grounded.
Referring to fig. 3, the voltage regulating circuit 23 includes a first PNP transistor P1, a first NPN transistor N1, a second PNP transistor P2, a second NPN transistor N2, a first MOS field effect transistor M1, a first overvoltage protection diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first electrolytic capacitor E1, a second electrolytic capacitor E2, and a second inductor L2.
Specifically, one end of the sixth resistor R6 is connected with the controller 3, the other end is connected with the base electrode of the first PNP type triode P1, the emitter electrode of the first PNP type triode P1 is connected with a +5V power supply, the collector electrode is connected with the base electrode of the second NPN type triode N2 through the eighth resistor R8, one path of the collector electrode of the second NPN type triode N2 is sequentially connected with the electromagnet circuit 22 through the fourth resistor R4, the first MOS field effect transistor M1 and the second inductor L2, the other path of the collector electrode of the second NPN type triode N2 is respectively connected with the base electrodes of the first NPN type triode N1 and the second PNP type triode P2, the collector electrode of the first NPN type triode N1 is connected between the fourth resistor R4 and the first MOS field effect transistor M1, the emitter electrode of the second PNP type triode P2 is connected with one end of the ninth resistor R9 and the third resistor R3 which are connected in series between the first NPN type triode N1 and the second PNP type triode P2, the other end of the resistor is connected between the fourth resistor R4 and the first MOS field effect transistor M1, the ninth resistor R9 and the third resistor R3 which are connected in series are also connected with the first MOS field effect transistor M1, one end of the seventh resistor R7 is connected between the eighth resistor R8 and the second NPN type triode N2, one end of the second resistor R2 is connected with the emitter of the second NPN type triode N2, the other ends of the seventh resistor R7 and the second resistor R2 are grounded together with the collector of the second PNP type triode P2, one end of the first overvoltage protection diode D1 and one end of the first electrolytic capacitor E1 are connected with the two ends of the second inductor L2 respectively, one end of the second electrolytic capacitor E2 is connected between one end of the second inductor L2 and the electromagnet circuit 22, and the other ends of the first overvoltage protection diode D1, the first electrolytic capacitor E1 and the second electrolytic capacitor E2 are grounded together; one end of the first resistor R1 is connected with the base electrode of the first PNP type triode P1, and the other end of the first resistor R1 is connected with the emitter electrode of the first PNP type triode P1; one end of the fourth resistor R4 is also connected with a power supply.
Referring to fig. 4, the control circuit of the temperature sensor 1 includes the temperature sensor 1, a second MOS field effect transistor Q2, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and an eighteenth capacitor C18.
Specifically, one path of the first end of the temperature sensor 1 is connected to the controller 3 through a twenty-fourth resistor R24, a twenty-second resistor R22 and a twenty-first resistor R21, the other path is connected to the controller 3 through a twenty-fifth resistor R25, the first end of the second MOS fet Q2 is connected between the twenty-fourth resistor R24 and the twenty-second resistor R22 in parallel with a power supply, the second end is connected between the twenty-second resistor R22 and the twenty-first resistor R21, the third end is connected to one end of a third resistor R23, the other end of the third resistor R23 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, one end of the eighteenth capacitor C18 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, the other end of the eighteenth capacitor C18 is connected to the second end of the temperature sensor 1, and the other end of the eighteenth capacitor C18 is commonly grounded to the second end of the temperature sensor 1.
Referring to fig. 5, the control circuit of the magnetic levitation temperature measurement device provided in embodiment 1 includes a controller 3, an electromagnet circuit 22, a voltage regulating circuit 23 and a control circuit of the temperature sensor 1, wherein an output end of a pulse width modulation signal of the controller 3 is connected with the voltage regulating circuit 23, an output end of a magnetic switching signal of the controller 3 is connected with the electromagnet circuit 22, and the controller 3 is further provided with two ports connected with the temperature sensor 1.
Example 2
Embodiment 2 of the present invention provides a magnetic levitation temperature measurement device, referring to fig. 6, comprising a temperature sensor 1 with a permanent magnet, a magnetic force generator 2, and a controller 3, wherein the temperature sensor 1 is disposed in a cooking apparatus 4, the magnetic force generator 2 is disposed at the top or bottom of the cooking apparatus 4, and the controller 3 is connected with the magnetic force generator 2 and the temperature sensor 1, respectively, for adjusting the position of the temperature sensor 1 by controlling the magnitude of the magnetic force generator 2.
The cooking device 4 is an oven, a steam box or a steaming and baking integrated machine.
Wherein two magnetic force generators 2 are provided, and the two magnetic force generators 2 are respectively arranged on the top wall and the bottom wall of the cooking apparatus 4 and are positioned right above and below the temperature sensor 1.
The two magnetic force generators 2 are respectively arranged right above and right below the temperature sensor 1, can provide different electromagnetic force combinations according to the requirement, ensure the moving distance of the temperature sensor 1, and are simultaneously arranged right above and right below the temperature sensor 1, so that the temperature sensor 1 can be ensured to move in the vertical direction.
The control circuit of the magnetic force generator 2 comprises an electromagnet circuit 22 provided with an electromagnet 21 and a voltage regulating circuit 23, wherein one end of the electromagnet circuit 22 is connected with the controller 3 through one end of the voltage regulating circuit 23, and the other end is directly connected with the controller 3.
The controller 3 can control the magnetic force of the electromagnet 21 of the magnetic force generator 2, so that the temperature sensor 1 is controlled to move to the corresponding position, and the magnetic force generator 2 can control the temperature sensor 1 to move up and down to detect the temperature of different layers.
The cooking appliance further comprises springs 5, wherein the springs 5 are arranged at two sides and are respectively positioned at the upper side and the lower side of the temperature sensor 1, and the temperature sensor 1 is respectively connected with the top wall and the bottom wall of the cooking appliance 4 through the springs 5 at the upper side and the lower side.
The arrangement of the spring 5 ensures that the temperature sensor 1 with the permanent magnet moves up and down under the combined action of magnetic force and spring force, and can further ensure that the temperature sensor 1 moves in the vertical direction without transverse movement, thereby ensuring the accuracy of the position movement of the temperature sensor 1 and ensuring the measurement accuracy.
The position of the temperature sensor of the existing cooking apparatus cannot be moved, and the existing cooking apparatus is generally used in layers, generally divided into an upper layer, a Zhong Ceng layer, and a lower layer.
Referring to fig. 7 and 8, the controller 3 controls the generation intensity of the upper and lower magnetic force generators 2 so that the suspension height of the temperature sensor 1 is changed, and the real-time temperatures of the upper, middle and lower layers can be monitored, thereby realizing the control of the three layers at different temperatures. If the temperature of the lower layer of the cooking equipment is required to be detected, the generation intensities of the upper magnetic force generator 2 and the lower magnetic force generator 2 are controlled, so that the temperature sensor 1 moves downwards to the lower layer position, if the temperature of the upper layer of the cooking equipment is required to be detected, the generation intensities of the upper magnetic force generator 2 and the lower magnetic force generator 2 are controlled, so that the temperature sensor 1 moves upwards to the upper layer position, and the temperature sensor 1 can float at any point within the upper limit range and the lower limit range according to the requirement, so that the multi-point temperature monitoring is realized.
Referring to fig. 9, the control circuit of the magnetic levitation temperature measurement device provided in embodiment 2 includes a controller 3, an electromagnet circuit 22, a voltage regulating circuit 23 and a control circuit of a temperature sensor 1, the controller 3 is provided with two output ends of pulse width modulation signals and two output ends of magnetic force switch signals, one magnetic force generator 2 corresponds to one control circuit, the control circuit of the magnetic force generator 2 includes the electromagnet circuit 22 and the voltage regulating circuit 23, the voltage regulating circuit 23 is connected with the output end of the pulse width modulation signals of the controller 3, the electromagnet circuit 22 is connected with the output end of the magnetic force switch signals of the controller 3, and the controller 3 is further provided with two ports connected with the temperature sensor 1.
According to the invention, the temperature sensor with the permanent magnet and the magnetic force generator are arranged in the cooking equipment, the magnetic force of the magnetic force generator is controlled by the controller, the temperature sensor is controlled to move, and the position of the temperature sensor in the cooking equipment can be changed, so that the actual temperatures of different layers of the cooking equipment are obtained, the controller can control the heating modes of heating pipes at different positions through the difference between the actual temperatures of different layers of the cooking equipment and the target temperature, the difference between the actual temperatures of different positions and the target temperature is reduced, and the effect of reasonably controlling the whole temperature field in the cooking equipment is achieved. In addition, cooking of different layers and different temperatures can be realized, and user experience is improved.
Example 3
Embodiment 2 of the present invention provides a cooking apparatus, which includes a magnetic levitation temperature device as described in embodiment 1 or embodiment 2, and the magnetic levitation temperature device is disposed in the cooking apparatus 4.
The cooking device 4 is an oven, a steam box or a steaming and baking integrated machine.
The temperature sensor 1 with the permanent magnet is arranged in the cooking equipment 4, the upper side and the lower side of the temperature sensor 1 are connected with the top wall and the bottom wall of the cooking equipment 4 through springs, the magnetic force generator 2 is arranged at least one, the magnetic force generator 2 is arranged on the top wall or/and the bottom wall of the cooking equipment 4, and the controller 3 is respectively connected with the magnetic force generator 2 and the temperature sensor 1 and used for adjusting the position of the temperature sensor 1 by controlling the magnetic force of the magnetic force generator 2.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. The magnetic suspension temperature measuring device is characterized by comprising a temperature sensor (1) with a permanent magnet, a magnetic force generator (2) and a controller (3), wherein the temperature sensor (1) is arranged in a cooking device (4), the magnetic force generator (2) is arranged at the top or the bottom of the cooking device (4), and the controller (3) is respectively connected with the magnetic force generator (2) and the temperature sensor (1) and is used for controlling the magnetic force of the magnetic force generator (2) through the controller (3) to adjust the position of the temperature sensor (1); different layers are arranged in the cooking equipment (4), and the controller (3) controls the magnetic force generator (2) to change in strength, so that the temperature sensor (1) moves to the different layers, and further temperature monitoring is carried out on the different layers in the cooking equipment (4).
2. Magnetic levitation temperature measurement device according to claim 1, characterized in that the magnetic force generator (2) is provided one, the magnetic force generator (2) being provided on the top wall or the bottom wall of the cooking device (4) and being located directly above or directly below the temperature sensor (1).
3. Magnetic levitation temperature measurement device according to claim 1, characterized in that two magnetic force generators (2) are provided, two magnetic force generators (2) being provided on the top and bottom walls of the cooking device (4) and directly above and directly below the temperature sensor (1), respectively.
4. A magnetic levitation temperature measurement device according to claim 2 or 3, further comprising springs (5), wherein the springs (5) are arranged at two upper and lower sides of the temperature sensor (1), and the temperature sensor (1) is connected with the top wall and the bottom wall of the cooking device (4) through the springs (5) at the upper and lower sides, respectively.
5. The magnetic levitation temperature measurement device according to claim 4, wherein the control circuit of the magnetic force generator (2) comprises an electromagnet circuit (22) provided with an electromagnet (21) and a voltage regulating circuit (23), one end of the electromagnet circuit (22) is connected with the controller (3) through one end of the voltage regulating circuit (23), and the other end is directly connected with the controller (3).
6. The magnetic levitation temperature measurement device of claim 5, wherein the electromagnet circuit (22) further comprises a third optocoupler U3, an inverter, a third NPN transistor N3, a second zener diode D2, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17; the first end of the third optocoupler U3 is connected with a power supply through a fifteenth resistor R15, the second end of the third optocoupler U3 is connected with a controller (3) through an inverter, the third end of the third optocoupler U is connected with a voltage regulating circuit (23), one path of the fourth end of the third optocoupler U is grounded through a seventeenth resistor R17, the other path of the fourth end of the third optocoupler U is connected with a base electrode of a third NPN triode N3 through a sixteenth resistor R16, a collector electrode of the third NPN triode N3 is connected between the third optocoupler U3 and the voltage regulating circuit (23) through a second voltage stabilizing diode D2, the second voltage stabilizing diode D2 is connected with an electromagnet (21) in parallel, and an emitter electrode of the third NPN triode N3 is grounded.
7. The magnetic levitation temperature measurement device according to claim 6, wherein the voltage regulating circuit (23) comprises a first PNP transistor P1, a first NPN transistor N1, a second PNP transistor P2, a second NPN transistor N2, a first MOS field effect transistor M1, a first overvoltage protection diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first electrolytic capacitor E1, a second electrolytic capacitor E2, and a second inductor L2; one end of the sixth resistor R6 is connected with the controller (3), the other end of the sixth resistor R6 is connected with the base electrode of the first PNP type triode P1, the emitter electrode of the first PNP type triode P1 is connected with a +5V power supply, the collector electrode of the first PNP type triode P1 is connected with the base electrode of the second NPN type triode N2 through an eighth resistor R8, one path of the collector electrode of the second NPN type triode N2 is sequentially connected with the electromagnet circuit (22) through a fourth resistor R4, a first MOS field effect transistor M1 and a second inductor L2, the other path of the second NPN type triode N1 is respectively connected with the base electrode of the first NPN type triode N1 and a second PNP type triode P2, the collector electrode of the first NPN type triode N1 is connected between the fourth resistor R4 and the first MOS field effect transistor M1, the emitter electrode of the second PNP 2 is connected with the common resistor R9 and the second MOS field effect transistor M2, the common resistor R9 is connected between the third resistor R2 and the third resistor E2 and the second inductor E2, the common resistor R2 is connected with the common resistor R2 and the other end of the second inductor E2 is connected with the third resistor E2; one end of the first resistor R1 is connected with the base electrode of the first PNP triode P1, and the other end of the first resistor R1 is connected with the emitter electrode of the first PNP triode P1; one end of the fourth resistor R4 is also connected with a power supply.
8. The magnetic levitation temperature measurement device according to claim 7, wherein the control circuit of the temperature sensor (1) further comprises a second MOS field effect transistor Q2, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and an eighteenth capacitor C18; one path of the first end of the temperature sensor (1) is connected with the controller (3) through a twenty-fourth resistor R24, a twenty-second resistor R22 and a twenty-first resistor R21, the other path of the first end of the temperature sensor is connected with the controller (3) through a twenty-fifth resistor R25, the first end of the second MOS field effect tube Q2 is connected between the twenty-fourth resistor R24 and the twenty-second resistor R22 in parallel, the second end of the second MOS field effect tube Q2 is connected between the twenty-second resistor R22 and the twenty-first resistor R21 in parallel, the third end of the second MOS field effect tube Q2 is connected with one end of the twenty-third resistor R23, the other end of the twenty-third resistor R23 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, one end of the eighteenth capacitor C18 is connected between the twenty-fourth resistor R24 and the twenty-fifth resistor R25, the other end of the eighteenth capacitor C18 is connected with the second end of the temperature sensor (1) in common ground.
9. Cooking apparatus, characterized in that it comprises a magnetic levitation temperature device according to any of claims 1-8, said magnetic levitation temperature device being arranged inside the cooking apparatus (4).
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