CN110731705A - portable safe controllable constant-temperature heating base - Google Patents
portable safe controllable constant-temperature heating base Download PDFInfo
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- CN110731705A CN110731705A CN201910882315.6A CN201910882315A CN110731705A CN 110731705 A CN110731705 A CN 110731705A CN 201910882315 A CN201910882315 A CN 201910882315A CN 110731705 A CN110731705 A CN 110731705A
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- temperature
- heating
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- heating base
- water cup
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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
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2444—Drinking cups with heating means
- A47J36/2461—Drinking cups with heating means with electrical heating means
Abstract
portable safe controllable constant temperature heating base comprises a heating base main body, a circuit structure, a heating surface, a fixed claw, a display module, a button and a heating wire, wherein the heating base main body can automatically control the heating wire to heat to realize the constant temperature effect according to whether a water cup is arranged on the heating base or not and the temperature of the water cup.
Description
Technical Field
The invention relates to drinking water appliances, in particular to portable safe and controllable constant-temperature heating bases.
Background
With the improvement of living standard, people always hope to drink water with proper temperature at any time. Especially the old, the patient, the infant, it is more sensitive to the temperature of water, often need when drinking water. The normal drinking warm water is obtained by natural cooling of boiled water, and the temperature is not controllable. The heat-insulating water cup enables water temperature cooling to become slow but cannot meet the requirement for constant proper water temperature, and the water temperature cannot be intelligently adjusted after the water temperature becomes cool.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide portable safe controllable constant-temperature heating bases which are simple in structure, can supply water with set temperature at any time to heat water, can be used for water cups made of various materials, are convenient and practical, and are suitable for being used by families to push .
In order to achieve the above object, the present invention provides a portable safe controllable constant temperature heating base, which comprises: the power supply is used for supplying power; the heating base main body is of a wooden disc structure, a circuit structure is arranged in the heating base main body in a hollow mode, a flat opening structure is arranged on the upper surface of the heating base main body, and bayonets are arranged on the edges of the opening structure; the heating surface is embedded into the flat opening at the upper part of the heating base main body, clamped in the clamping opening, fixed on the upper surface of the heating base main body and used for sealing the heating base main body and the circuit structure inside the heating base main body; the fixing claws comprise a plurality of fixing claws which are arranged on the upper surface of the heating surface along the circumferential direction and are used for fixing and supporting the water cups; the temperature sensor S1 and the pressure sensor are arranged on the upper end face of the fixed claw in a fit mode, the temperature sensor is used for collecting temperature signals of the water cup, and the pressure sensor is used for collecting pressure signals applied to the fixed claw by the water cup; the display module is arranged on the surface of the heating base main body and used for displaying the temperature of the water cup; the button is arranged on the side edge of the display module and used for controlling the circuit structure to heat the water cup; wherein the circuit structure comprises: a heating wire wound below the heating surface and finally heating the cup; the main control unit is connected with the temperature sensor S1, the pressure sensor and the button, receives a temperature signal of the water cup acquired by the temperature sensor S1 and a pressure signal borne by the pressure sensor in a state that the button is closed, and outputs a control signal when the pressure signal exceeds a threshold value and the temperature signal is lower than the threshold value; the main control unit is also connected with the display module and is used for driving the display module to display corresponding temperature according to the temperature signal of the water cup acquired by the temperature sensor S1; the driving unit is connected with the main control unit and used for receiving the control signal output by the main control unit and outputting a driving signal according to the control signal; and the switching element is connected between the output end of the driving unit and the heating wire and is used for correspondingly controlling the heating wire to heat the water cup or disconnecting the heating wire to stop heating according to the driving signal output by the driving unit.
Optionally, the portable safe and controllable constant-temperature heating base is characterized in that the heating wire is formed by connecting an inductor and a capacitor in parallel, an end of the heating wire is grounded through a grounded capacitor C1, the other end of the heating wire is connected with two switching elements, the two switching elements are grounded after being connected in series, and control ends of the two switching elements are both connected with the driving unit.
Optionally, in the portable safe and controllable constant-temperature heating base, of the two switching elements are thyristors, cathodes of the thyristors are grounded, anodes of the thyristors are connected in series with another of the two switching elements, control electrodes of the thyristors are connected with output ends of the driving unit, another of the two switching elements are connected in series between the anodes of the thyristors and the heating wire, and control ends of the two switching elements are connected with another output ends of the driving unit.
Optionally, the portable safe and controllable constant-temperature heating base is further provided with switching elements, wherein the switching elements are triodes arranged in a following state.
Optionally, the portable safe and controllable constant-temperature heating base is characterized in that the grounding capacitor C1 is further connected with a resistor R1 and a temperature sensor S1 in parallel, a end of the temperature sensor S1 is grounded, the other end of the temperature sensor S1 is connected with the input end of the main control unit, and a common end of the resistor R1 and the heating wire is further connected with a filter inductor L1 and connected to the positive electrode of the power supply through the filter inductor L1.
Optionally, the portable safe and controllable constant-temperature heating base is provided with a main control unit which is configured to execute step of receiving an electric signal of the button, receiving a temperature signal of a water cup and a pressure signal of a pressure sensor acquired by the temperature sensor S1 in a state that the button is closed, jumping to a second step when the pressure signal exceeds a threshold value, otherwise, judging whether the pressure signal exceeds the threshold value at set intervals, second step of acquiring the temperature signal of the water cup acquired by the temperature sensor S1, calculating a proportional relation k between the temperature signal and a preset temperature threshold value, driving the display module to display a corresponding temperature according to the temperature signal of the water cup acquired by the temperature sensor S1, third step of outputting a triangular wave control signal to the driving unit according to a duty ratio of 1-k when k is less than 1, controlling the driving unit to amplify the triangular wave control signal and keeping the amplified signal not to exceed a voltage range which the switching element can bear, controlling the driving unit to output the amplified signal, correspondingly driving the switching element to control the switching element to switch element to stop the heating wire in an intermittent heating gap state according to the heating gap k being more than or less than 1.
Optionally, the portable safe and controllable constant-temperature heating base is provided with a time difference between the driving signals output by the driving unit to the two switching elements, and the time difference is proportional to a proportional relation k between the temperature signal and a preset temperature threshold.
Compared with the prior art, the invention has the following technical effects:
1. the automatic heating device can automatically control the heating wire to heat according to whether the water cup is arranged on the heating base or not and the temperature of the water cup, so that the constant temperature effect is realized. The heating base is designed for the old and young, is convenient to carry, and can safely and reliably realize constant-temperature heating.
2. In particular, the invention utilizes two switching elements, the duty ratio of the switching element is adjusted according to the proportional relation k between the temperature signal and the preset temperature threshold value, and the voltage range of the triangular wave control signal for driving the switching element is adjusted according to the voltage which can be borne by the two switching elements. Therefore, the invention can correspondingly drive the switch element to control the heating wire to intermittently heat the water cup at a short time interval according to the on-off state of the switch element, thereby avoiding overheating or failure of the element and simultaneously ensuring reliable heating effect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification , and together with this description , serve to explain the invention and not to limit it.
FIG. 1 is a schematic view of the overall structure of a portable safety controllable constant temperature heating base according to the present invention;
FIG. 2 is a top view of a portable safety controlled constant temperature heating base according to the present invention;
FIG. 3 is a cross-sectional view of a portable safety controlled constant temperature heating base according to the present invention;
FIG. 4 is a schematic diagram of the circuit configuration in a portable safety controlled constant temperature heating base according to the present invention;
fig. 5 is a schematic diagram of a triangular wave control signal in a portable safety controlled constant temperature heating base according to the present invention.
In the drawings, 1 denotes a heating base main body; 11 denotes a circuit configuration; 2 denotes a heating surface; 3 denotes a fixed claw; 4 denotes a display module; 5 denotes a button; and 6 denotes a heating wire.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Fig. 1 and 2 show a portable safety controllable thermostatic heating base according to the invention, comprising:
the power supply is used for supplying power; it can be selected as a usb power supply;
the heating base comprises a heating base body 1 which is of a wooden disc structure, wherein a circuit structure is arranged in the heating base body in a hollow mode, a flat opening structure is arranged on the upper surface of the heating base body, and a bayonet is arranged on the edge of the opening structure; the wood outside the touch screen can be made of oak materials, so that the touch screen has good texture, hard texture and firm structure;
the heating surface 2 is embedded into a flat opening at the upper part of the heating base main body 1, clamped in the clamping opening, fixed on the upper surface of the heating base main body 1 and used for sealing the heating base main body 1 and a circuit structure 11 in the heating base main body; which is made of borosilicate glass. The high-temperature resistance is excellent, the heat can be better conducted, and the heat conduction plate can be used more safely;
a plurality of fixing claws 3 arranged on the upper surface of the heating surface 2 along the circumferential direction and used for fixing and supporting the water cups; the temperature sensor S1 and the pressure sensor are arranged on the upper end face of the fixed claw 3 in a fit mode, the temperature sensor is used for collecting temperature signals of the water cup, the pressure sensor is used for collecting pressure signals applied to the fixed claw by the water cup, and the pressure sensor is connected to the circuit structure 11 in the heating base main body 1 through a hole penetrating through the inner portion of the fixed claw 3 and provides corresponding sampling electric signals for the circuit structure; the material can also be selected from borosilicate glass material, so that the high-temperature-resistant heat-conducting glass has excellent high-temperature resistance, can conduct heat better and can be used more safely;
the display module 4 is arranged on the surface of the heating base main body 1 and used for displaying the temperature of the water cup; the LED display screen comprises a display device, a metal structure frame, a display unit, a twisted-pair transmission cable and a main control unit. The data of the temperature can be displayed, so that people can more visually see the heating temperature;
the button 5 is arranged on the side edge of the display module 4 and used for controlling the circuit structure to heat the water cup; wherein the circuit structure comprises:
a heating wire 6 wound below the heating surface 2 and finally heating the cup;
the main control unit is connected with the temperature sensor S1, the pressure sensor and the button 5, receives a temperature signal of the water cup acquired by the temperature sensor S1 and a pressure signal borne by the pressure sensor in a state that the button 5 is closed, and outputs a control signal when the pressure signal exceeds a threshold value and the temperature signal is lower than the threshold value; the main control unit is also connected with the display module 4 and is used for driving the display module 4 to display the corresponding temperature according to the temperature signal of the water cup collected by the temperature sensor S1;
the driving unit is connected with the main control unit and used for receiving the control signal output by the main control unit and outputting a driving signal according to the control signal;
and the switching element is connected between the output end of the driving unit and the heating wire 6 and is used for correspondingly controlling the heating wire 6 to heat the water cup or disconnecting the heating wire 6 to stop heating according to the driving signal output by the driving unit.
In addition, the button 5 can also adopt a contact button which is pressed doubly, when the th time is pressed, the power is switched on, and when the second time is pressed, the power is switched off.
In other modes, steps can be further arranged on the surface of the water cup to connect a metal wire for sensing the weak current of the human body, and when the weak current of the human body is sensed, a power-off interruption signal is triggered to start a power-off mechanism, namely, the main control unit responds to the interruption signal to stop the driving unit, the heating is stopped, and the safety of a user is protected.
Referring to fig. 3, the heating base body 1 and the heating surface 2 may be set to have thicknesses of 0.4mm to 0.5mm, which not only ensures the proper rigidity but also saves the cost, the heating surface 2 may be further provided with steps of a metal wire gauze as a device for sensing the weak current of the human body, providing an interrupt signal triggered by the human body contact to the main control unit, so that the main control unit stops the driving unit in response to the interrupt signal, stops heating, and protects the safety of the user, the heating wire 6 and the circuit structure 11 are arranged in the heating base body 1 from top to bottom, thereby realizing the heating and the control of the heating process.
Referring to the heating wire 6 shown in the middle of fig. 3, the heating wire is made of cast aluminum, and can be used for heating cups made of various materials, and has the advantages of good thermal effect, good heat conduction and heating time saving, referring to the circuit schematic diagram shown in fig. 4, the heating wire can be equivalently formed by connecting an inductor L2 and a capacitor C2 in parallel, wherein the end of the heating wire 6 is grounded through a grounded capacitor C1, the other end of the heating wire 6 is connected with two switching elements, the two switching elements are grounded after being connected in series, and the control ends of the two switching elements are both connected with the driving unit.
In implementation modes, the button 5 adopts a contact button and can be composed of a button cap, a return spring, a fixed contact, a movable contact, a shell box, a strut link and the like.
Referring to fig. 4, in the circuit structure 11, of the two switching elements are thyristors K1, the cathodes of the thyristors are grounded, the anodes of the thyristors are connected in series with another of the two switching elements, and the control electrodes of the thyristors are connected to output terminals of the driving unit;
another of the two switching elements can be selected as a triode K2 arranged in a following state, which is connected in series between the anode of the thyristor and the heating wire 6, and the control end of which is connected with another output ends of the driving unit.
The grounding capacitor C1 is also connected with a resistor R1 and a temperature sensor S1 in parallel, the end of the temperature sensor S1 is grounded, the other end of the temperature sensor S1 is connected with the input end of the main control unit, and the common end of the resistor R1 and the heating wire 6 is also connected with a filter inductor L1 which is connected to the anode of the power supply through the filter inductor L1.
Therefore, the main control unit realizes the control of the heating process according to the following steps:
when the usb is powered on, the usb is not directly powered on, the device is in a standby state, when an external water cup or liquid to be heated is placed on the usb, a user presses the button 5 for times to be powered on, if the button 5 is not used to be pressed for the second time, the product returns to the standby state, after the power is powered on, the power module converts 5V voltage to supply power to the core chip, the shell 1 is provided with the rotary button 5, when current passes through the rotary button 5, the resistance of the rotary button 5 can be changed through rotation, the heating degree is reached, the display screen 4 is connected with the rotary button 5 through the chip of the main control unit, the temperature is displayed on the display screen 4, the high-temperature-resistant insulating glass 2 is provided with three high-temperature-resistant insulating glass claws 3 which are respectively separated by 120 degrees, the liquid to be heated is prevented from falling off, the surface of the high-temperature-resistant insulating glass 2 is also provided with a metal wire mesh with conductive performance, and when a human body accidentally contacts the metal wire mesh, the main control unit in the trigger circuit structure 11 triggers an interrupt.
When an external cup or liquid to be heated is placed on the portable safe and controllable constant-temperature heating base, a user presses the button 5 for times to switch on the portable safe and controllable constant-temperature heating base to enable the portable safe and controllable constant-temperature heating base to work normally, and the main control unit carries out heating control according to the following steps:
, receiving a temperature signal of the water cup and a pressure signal of the pressure sensor acquired by the temperature sensor S1, jumping to the second step when the pressure signal exceeds a threshold, otherwise, keeping the step , and judging whether the pressure signal exceeds the threshold at set intervals;
secondly, acquiring a temperature signal of the water cup acquired by the temperature sensor S1, and calculating a proportional relation k between the temperature signal and a preset temperature threshold; driving the display module 4 to display the corresponding temperature according to the temperature signal of the water cup acquired by the temperature sensor S1;
thirdly, outputting a triangular wave control signal shown in fig. 5 to the driving unit according to a duty ratio of 1-k when k <1, controlling the driving unit to amplify the triangular wave control signal and keeping the amplified signal not to exceed a voltage range which can be borne by the switching element, controlling the driving unit to output the amplified signal, correspondingly driving the switching element to control the heating wire 6 to intermittently heat the water cup at a short time interval according to the on-off state of the switching element;
when k is more than or equal to 1, the heating wire 6 is kept disconnected to stop heating.
Referring to fig. 5, the triangular wave control signal has a duty ratio T/T =1-k, and a voltage amplitude a does not exceed a voltage range that can be tolerated by the switching element.
In a preferable mode, a time difference Δ is set between the driving signals output by the driving unit to the two switching elements, the time difference Δ is in direct proportion to a proportional relation k between the temperature signals and a preset temperature threshold value, the heating wire 6 is driven to heat only when the two signals reach the turn-on voltage of the switching elements, and the circuit is ensured not to be overloaded through the simple regulation and control, and the heating wire 6 is controlled to heat in a longer time interval with a higher duty ratio when the temperature difference is larger and the heating wire 6 is controlled to heat in a shorter time interval with a higher duty ratio when the temperature difference is smaller according to the proportional relation k between the temperature signals and the preset temperature threshold value.
The portable safe controllable constant-temperature heating base has the advantages of being good in heat resistance, capable of being suitable for cups made of various materials to heat, strong in practicability and capable of accurately seeing the temperature, not only is the appearance exquisite, but also the temperature control is accurate, the functions are practical, the electric quantity is saved, the practical service life is long, the practical applicability is high, the hand-in capability is strong, the noise is low, and the portable safe controllable constant-temperature heating base is very suitable for being applied to family pushing .
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1, kind carry safe controllable constant temperature heating base, its characterized in that includes:
the power supply is used for supplying power;
the heating base comprises a heating base main body (1) which is of a wooden disc structure, wherein a circuit structure is arranged in the heating base main body in a hollow mode, a flat opening structure is arranged on the upper surface of the heating base main body, and bayonets are arranged on the edges of the opening structure;
the heating surface (2) is embedded into a flat opening at the upper part of the heating base main body (1), clamped in the clamping opening, fixed on the upper surface of the heating base main body (1) and used for sealing the heating base main body (1) and a circuit structure (11) in the heating base main body;
the fixed claws (3) comprise a plurality of fixed claws, are arranged on the upper surface of the heating surface (2) along the circumferential direction and are used for fixing and supporting the water cups; the temperature sensor (S1) and the pressure sensor are attached to the upper end face of the fixed claw (3), the temperature sensor is used for collecting temperature signals of the water cup, and the pressure sensor is used for collecting pressure signals applied to the fixed claw by the water cup;
the display module (4) is arranged on the surface of the heating base main body (1) and is used for displaying the temperature of the water cup;
the button (5) is arranged on the side edge of the display module (4) and used for controlling the circuit structure to heat the water cup; wherein the circuit structure comprises:
a heating wire (6) which is wound below the heating surface (2) and finally heats the cup;
the main control unit is connected with the temperature sensor (S1), the pressure sensor and the button (5), receives a temperature signal of a water cup and a pressure signal borne by the pressure sensor, which are acquired by the temperature sensor (S1), in a state that the button (5) is closed, and outputs a control signal when the pressure signal exceeds a threshold value and the temperature signal is lower than the threshold value; the main control unit is also connected with the display module (4) and is used for driving the display module (4) to display the corresponding temperature according to the temperature signal of the water cup acquired by the temperature sensor (S1);
the driving unit is connected with the main control unit and used for receiving the control signal output by the main control unit and outputting a driving signal according to the control signal;
and the switching element is connected between the output end of the driving unit and the heating wire (6) and is used for correspondingly controlling the heating wire (6) to heat the water cup or disconnecting the heating wire (6) to stop heating according to the driving signal output by the driving unit.
2. A portable safety controllable constant temperature heating base as claimed in claim 1, wherein said heating wire (6) is composed of an inductor and a capacitor connected in parallel, said end of said heating wire (6) is grounded through a grounded capacitor (C1), another end of said heating wire (6) is connected with two said switch elements, said two switch elements are connected in series and then grounded, and the control ends of both said switch elements are connected with said driving unit.
3. The portable safety controllable constant temperature heating base according to claim 2, wherein of the two switch elements are thyristors, the negative poles of the thyristors are grounded, the positive poles of the thyristors are connected in series with the other of the two switch elements, and the control poles of the thyristors are connected with output terminals of the driving unit;
the other of the two switching elements are connected in series between the anode of the controllable silicon and the heating wire (6), and the control end of the two switching elements is connected with the other output ends of the driving unit.
4. A portable safety controlled thermostatic heating base as set forth in claims 2-3 wherein said another of said switching elements are transistors arranged in a follow state.
5. A portable safety controllable constant temperature heating base as claimed in claims 2-3, wherein said grounding capacitor (C1) is further connected in parallel with a th resistor (R1) and a temperature sensor (S1), a end of said temperature sensor (S1) is grounded, another end of said temperature sensor (S1) is connected with an input end of said main control unit, a common end of said th resistor (R1) and said heating wire (6) is further connected with a filter inductor (L1) which is connected to a positive electrode of said power supply through said filter inductor (L1).
6. A portable safety controllable thermostatic heating base according to claims 1-5, wherein said main control unit is configured to perform the steps of:
, receiving the electric signal of the button (5), receiving the temperature signal of the water cup collected by the temperature sensor (S1) and the pressure signal of the pressure sensor under the state that the button (5) is closed, jumping to a second step when the pressure signal exceeds a threshold value, otherwise, judging whether the pressure signal exceeds the threshold value at set intervals;
secondly, acquiring a temperature signal of the water cup acquired by the temperature sensor (S1), and calculating a proportional relation k between the temperature signal and a preset temperature threshold; driving the display module (4) to display the corresponding temperature according to the temperature signal of the water cup acquired by the temperature sensor (S1);
thirdly, outputting a triangular wave control signal to the driving unit according to the duty ratio of (1-k) when k is less than 1, controlling the driving unit to amplify the triangular wave control signal and keeping the amplified signal not to exceed the voltage range which can be borne by the switching element, controlling the driving unit to output the amplified signal, correspondingly driving the switching element to control the heating wire (6) to intermittently heat the water cup at a short time interval according to the on-off state of the switching element;
when k is more than or equal to 1, the heating wire (6) is kept disconnected to stop heating.
7. A portable safety controllable thermostatic heating base according to claim 6, wherein a time difference is provided between the driving signals output by said driving unit to said two switching elements, said time difference being proportional to a proportional relationship k between the temperature signal and a predetermined temperature threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910882315.6A CN110731705B (en) | 2019-09-18 | 2019-09-18 | Portable safe controllable constant-temperature heating base |
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| CN201910882315.6A CN110731705B (en) | 2019-09-18 | 2019-09-18 | Portable safe controllable constant-temperature heating base |
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| CN110731705A true CN110731705A (en) | 2020-01-31 |
| CN110731705B CN110731705B (en) | 2021-01-26 |
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| CN110731705B (en) | 2021-01-26 |
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