CN213721484U - Electric chafing dish temperature controller with switch button - Google Patents
Electric chafing dish temperature controller with switch button Download PDFInfo
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- CN213721484U CN213721484U CN202022067481.1U CN202022067481U CN213721484U CN 213721484 U CN213721484 U CN 213721484U CN 202022067481 U CN202022067481 U CN 202022067481U CN 213721484 U CN213721484 U CN 213721484U
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Abstract
The utility model discloses a set up electric chafing dish temperature controller of switch button, including shell, adjust knob, temperature sensing stick and power cord, the temperature sensing stick part embedded in the shell and with shell fixed connection, the inside of shell is equipped with the circuit board, the circuit board respectively with the temperature sensing stick with power cord electric connection, the shell is equipped with the switch button, the switch button with circuit board electric connection, the circuit board includes temperature regulation circuit. The utility model discloses a set up electric chafing dish temperature controller of switch button, it sets up opening and closing of switch direct control heater, and it experiences the change of temperature in real time through thermistor and can show the temperature through the display screen, and the user passes through the temperature of display screen real-time observation electric chafing dish and when reaching anticipated temperature, directly closes the heater through the switch, improves food preparation effect and speed.
Description
Technical Field
The utility model belongs to the technical field of electric chafing dish temperature controller, concretely relates to set up electric chafing dish temperature controller of switch button.
Background
The structure of the electric heating tube type chafing dish is that the heating tube is embedded at the bottom of a pot, and the shape of the pot is usually square or round. The control mode is that a mechanical temperature controller is adopted to control the temperature in the pot, the principle is that the temperature is transmitted to a bimetallic strip through a heat conduction pipe at the bottom of the pot, and the opening and closing of a contact is determined by utilizing the difference of thermal expansion coefficients of the bimetallic strip, so that the temperature in the pot is automatically stabilized in a certain range, the temperature control error is large, the fluctuation is large, the food making effect and speed are influenced, the output power control cannot be realized by controlling the temperature through the on-off of the metal switch, the precision of a mechanical temperature probe is low, and the reaction is slow.
The publication number is: CN107894796A, the subject of which is an invention patent of an electronic temperature controller, discloses a technical scheme of the electronic temperature controller, which comprises a circuit board (1), a fixing screw (2), a digital display (3), a power indicator (4), an operation indicator (5), a temperature mode indicator (6), a power mode indicator (7), a controllable silicon (8), a reduction key (9), a function key (10), an addition key (11), a first resistor (12), an amplifying circuit (13), a second resistor (14), a singlechip (15), a cold end compensation (16), a third resistor (17), a photoelectric coupler (18), a power line (19) and a temperature sensor (20), wherein the left end of the front surface of the circuit board (1) is connected with the fixing screw (2) through a bolt, the digital display (3) is arranged on the right side of the fixing screw (2), and the digital display (3) is welded with the circuit board (1), a power supply indicator lamp (4) is arranged above the circuit board (1), an operation indicator lamp (5) is arranged on the right side of the power supply indicator lamp (4), a temperature mode indicator lamp (6) is arranged on the right side of the operation indicator lamp (5), a power mode indicator lamp (7) is arranged on the right side of the temperature mode indicator lamp (6), the upper end of the right side of the digital display (3) is welded with a silicon controlled rectifier (8), a reduction key (9) is arranged at the bottom end of the digital display (3), a function key (10) is arranged on the right side of the reduction key (9), an addition key (11) is arranged on the right side of the function key (10), a first resistor (12) is arranged on the right side of the digital display (3), an amplifying circuit (13) is arranged on the right side of the first resistor (12), a second resistor (14) is arranged on the right side of the amplifying circuit (13), and a single chip microcomputer (15) is arranged below the amplifying circuit (13), the right side of the singlechip (15) is welded with a cold end compensation (16), a third resistor (17) is arranged below the right side of the cold end compensation (16), a photoelectric coupler (18) is arranged on the left side of the third resistor (17), the back of the circuit board (1) is welded with a power line (19), the right side of the circuit board (1) is welded with a temperature sensor (20), the reduction key (9), the function key (10) and the addition key (11) are all electrically connected with a power line (19) and a singlechip (15), the temperature sensor (20), the amplifying circuit (13), the power indicator (4), the operation indicator (5), the temperature mode indicator (6), the power mode indicator (7) and the cold end compensation (16) are all electrically connected with the singlechip (15), the photoelectric coupler (18), the digital display (3) and the controlled silicon (8) are electrically connected with the cold end compensation (16).
Take above-mentioned utility model patent as an example, its temperature controller that is used for the electric chafing dish has been mentioned, but its technical scheme with the utility model discloses a difference. Therefore, the above problems are further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a set up electric chafing dish temperature controller of switch button, it sets up opening and closing of switch direct control heater, and it experiences the change of temperature in real time through thermistor and can show the temperature through the display screen, and the user passes through the temperature of display screen real-time observation electric chafing dish and when reaching anticipated temperature, directly closes the heater through the switch, improves food preparation effect and speed.
Another object of the utility model is to provide a set up electric chafing dish temperature controller of switch button, it can also realize automatically regulated temperature through thermistor (thermistor's resistance variation range can be for the temperature variation range, adjusts through handling the chip).
In order to achieve the above object, the utility model provides a set up spark-erosion pan temperature controller of switch button, including shell, adjust knob, temperature sensing stick and power cord, temperature sensing stick part embedded in the shell and with shell fixed connection, adjust knob is located the top of shell, the power cord part embedded in the shell, the inside of shell is equipped with the circuit board, the circuit board respectively with the temperature sensing stick with power cord electric connection, the shell is equipped with switch button (direct control heating switch), switch button with circuit board electric connection, the circuit board includes temperature regulation circuit, temperature regulation circuit includes:
the heater is connected with the input end A and the input end B (connected with the power line), and the heater X2 and the switch S are connected in series between the input end A and the input end B (the switch S is a part of the switch key and directly controls the on-off of the heater X2);
the processing chip U1, the thermistor R1 and the heater coil X1, the 2 pin of the processing chip U1 is electrically connected with the 1 pin of the processing chip U1 through the varistor RP1 and the thermistor R1, one end of the varistor RP1 far away from the thermistor R1 is electrically connected with the 4 pin of the processing chip U1 through the resistor R3, the common end of the thermistor R1 and the varistor RP1 is electrically connected with the 4 pin of the controller U1 through the resistor R2, the varistor RP2 and the resistor R4 in sequence, the 3 pin of the controller U1 is also electrically connected with the moving end of the varistor RP2, and the 6 pin of the processing chip U1 is electrically connected with the 4 pin of the rectifier bridge B through the heater coil X1.
As a further preferable technical solution of the above technical solution, the input terminal a is electrically connected to 5 pins of the transformer T, the input terminal B is electrically connected to 6 pins of the transformer T, and an indicator lamp H (for indicating a power on state) is connected in series between 1 pin and 2 pins of the transformer T.
As a further preferable technical solution of the above technical solution, the 3 pins of the transformer T are electrically connected to the 1 pin of the rectifier bridge B, and the 4 pins of the transformer T are electrically connected to the 3 pins of the rectifier bridge B.
As a further preferable technical solution of the above technical solution, one path of the 2 pins of the rectifier bridge B is electrically connected to the 7 pins of the processing chip U1, and the other path of the 2 pins of the rectifier bridge B is electrically connected to the 4 pins of the processing chip U1 through a capacitor C2.
As a further preferable technical solution of the above technical solution, one path of the 6-pin of the processing chip U1 is electrically connected to the 7-pin of the processing chip U1 through a diode D1 and a resistor R5 in sequence, the other path of the 6-pin of the processing chip U1 is electrically connected to the 4-pin of the processing chip U1 through a resistor R6 and a diode D3 in sequence, and both ends of the heater coil X1 are connected in parallel to a diode D2.
As a further preferable technical solution of the above technical solution, the housing is further provided with a display screen (for displaying temperature), and the display screen is electrically connected to the circuit board.
Drawings
Fig. 1 is a schematic structural diagram of an electric chafing dish temperature controller with a switch button of the present invention.
Fig. 2 is a temperature regulating circuit diagram of an electric chafing dish temperature controller with switch buttons of the utility model.
The reference numerals include: 10. a housing; 20. adjusting a knob; 30. a temperature sensing bar; 40. a power line; 50. and (6) switching a key.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
The utility model discloses a set up electric chafing dish temperature controller of switch button, combine preferred embodiment below, make further description to utility model's concrete embodiment.
Referring to fig. 1 of the accompanying drawings, fig. 1 is a schematic structural diagram of an electric chafing dish temperature controller with switch keys of the present invention, and fig. 2 is a circuit diagram of an electric chafing dish temperature controller with switch keys of the present invention.
In the embodiment of the present invention, those skilled in the art will note that the housing, the adjusting knob, the temperature sensing rod, and the like according to the present invention can be regarded as the prior art.
PREFERRED EMBODIMENTS
The utility model discloses a set up switch button's electric chafing dish temperature controller, including shell 10, adjust knob 20, temperature sensing stick 30 and power cord 40, temperature sensing stick 30 part embedded in shell 10 and with shell 10 fixed connection, adjust knob 20 is located the top of shell 10, power cord 40 part embedded in shell 10, the inside of shell 10 is equipped with circuit board (not shown), the circuit board respectively with temperature sensing stick 30 with power cord 40 electric connection, shell 10 is equipped with switch button 50 (the switch of direct control heating), switch button 50 with circuit board electric connection, the circuit board includes temperature regulation circuit, temperature regulation circuit includes:
the heater is connected with the input end A and the input end B (connected with the power line), and the heater X2 and the switch S are connected in series between the input end A and the input end B (the switch S is a part of the switch key and directly controls the on-off of the heater X2);
the processing chip U1, the thermistor R1 and the heater coil X1, the 2 pin of the processing chip U1 is electrically connected with the 1 pin of the processing chip U1 through the varistor RP1 and the thermistor R1, one end of the varistor RP1 far away from the thermistor R1 is electrically connected with the 4 pin of the processing chip U1 through the resistor R3, the common end of the thermistor R1 and the varistor RP1 is electrically connected with the 4 pin of the controller U1 through the resistor R2, the varistor RP2 and the resistor R4 in sequence, the 3 pin of the controller U1 is also electrically connected with the moving end of the varistor RP2, and the 6 pin of the processing chip U1 is electrically connected with the 4 pin of the rectifier bridge B through the heater coil X1.
Specifically, the input end a is electrically connected to 5 pins of the transformer T, the input end B is electrically connected to 6 pins of the transformer T, and an indicator lamp H (for indicating a power-on state) is connected in series between 1 pin and 2 pins of the transformer T.
More specifically, the 3 pins of the transformer T are electrically connected to the 1 pin of the rectifier bridge B, and the 4 pins of the transformer T are electrically connected to the 3 pins of the rectifier bridge B.
Furthermore, one path of the 2 pins of the rectifier bridge B is electrically connected to the 7 pins of the processing chip U1, and the other path of the 2 pins of the rectifier bridge B is electrically connected to the 4 pins of the processing chip U1 through a capacitor C2.
Furthermore, one path of the 6-pin of the processing chip U1 is electrically connected to the 7-pin of the processing chip U1 through a diode D1 and a resistor R5 in sequence, the other path of the 6-pin of the processing chip U1 is electrically connected to the 4-pin of the processing chip U1 through a resistor R6 and a diode D3 in sequence, and two ends of the heater coil X1 are connected in parallel with a diode D2.
Preferably, the housing 10 is further provided with a display screen (not shown) for displaying temperature, and the display screen is electrically connected with the circuit board.
It is worth mentioning that the technical features such as the shell, the adjusting knob and the temperature sensing rod that the utility model discloses the patent application relates to should be regarded as prior art, and the concrete structure of these technical features, theory of operation and the control mode that may involve, spatial arrangement mode adopt the conventional selection in this field can, should not be regarded as the utility model discloses a point of invention is located, the utility model discloses a do not do further specifically expand the detailed description.
It will be apparent to those skilled in the art that modifications and variations can be made in the above-described embodiments, or some features of the invention may be substituted or omitted, and any modification, substitution, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a set up switch button's electric chafing dish temperature controller, includes shell, adjust knob, temperature sensing stick and power cord, temperature sensing stick part embedded in the shell and with shell fixed connection, adjust knob is located the top of shell, power cord part embedded in the shell, its characterized in that, the inside of shell is equipped with the circuit board, the circuit board respectively with the temperature sensing stick with power cord electric connection, the shell is equipped with the switch button, the switch button with circuit board electric connection, the circuit board includes temperature regulation circuit, temperature regulation circuit includes:
the device comprises an input end A and an input end B, wherein a heater X2 and a switch S are connected between the input end A and the input end B in series;
the processing chip U1, the thermistor R1 and the heater coil X1, the 2 pin of the processing chip U1 is electrically connected with the 1 pin of the processing chip U1 through the varistor RP1 and the thermistor R1, one end of the varistor RP1 far away from the thermistor R1 is electrically connected with the 4 pin of the processing chip U1 through the resistor R3, the common end of the thermistor R1 and the varistor RP1 is electrically connected with the 4 pin of the processing chip U1 through the resistor R2, the varistor RP2 and the resistor R4 in sequence, the 3 pin of the processing chip U1 is also electrically connected with the moving end of the varistor RP2, and the 6 pin of the processing chip U1 is electrically connected with the 4 pin of the rectifier bridge B through the heater coil X1.
2. The electric chafing dish temperature controller with switch buttons as claimed in claim 1, wherein the input terminal A is electrically connected with 5 pins of a transformer T, the input terminal B is electrically connected with 6 pins of the transformer T, and an indicator lamp H is connected between 1 pin and 2 pins of the transformer T in series.
3. The electric chafing dish temperature controller with switch button as claimed in claim 2, wherein 3 pins of the transformer T are electrically connected with 1 pin of the rectifier bridge B and 4 pins of the transformer T are electrically connected with 3 pins of the rectifier bridge B.
4. The temperature controller for electric chafing dish with switch button as claimed in claim 3, wherein one path of 2 pins of said rectifier bridge B is electrically connected to 7 pins of said processing chip U1 and the other path of 2 pins of said rectifier bridge B is electrically connected to 4 pins of said processing chip U1 through capacitor C2.
5. The electric chafing dish temperature controller with switch buttons as claimed in claim 4, wherein one path of the 6 pins of the processing chip U1 is electrically connected with the 7 pins of the processing chip U1 through a diode D1 and a resistor R5 in sequence, the other path of the 6 pins of the processing chip U1 is electrically connected with the 4 pins of the processing chip U1 through a resistor R6 and a diode D3 in sequence, and two ends of the heater coil X1 are connected with a diode D2 in parallel.
6. The electric chafing dish temperature controller with the switch button as claimed in claim 5, wherein the casing is further provided with a display screen, and the display screen is electrically connected with the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022067481.1U CN213721484U (en) | 2020-09-19 | 2020-09-19 | Electric chafing dish temperature controller with switch button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022067481.1U CN213721484U (en) | 2020-09-19 | 2020-09-19 | Electric chafing dish temperature controller with switch button |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213721484U true CN213721484U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022067481.1U Active CN213721484U (en) | 2020-09-19 | 2020-09-19 | Electric chafing dish temperature controller with switch button |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213721484U (en) |
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2020
- 2020-09-19 CN CN202022067481.1U patent/CN213721484U/en active Active
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