CN113063166A

CN113063166A - Active cooling scald preventing device

Info

Publication number: CN113063166A
Application number: CN202110445384.8A
Authority: CN
Inventors: 杜启明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-07-02

Abstract

The invention discloses an active cooling and scald preventing device, which relates to the technical field of electric ceramic furnaces and aims at solving the problem that an existing electric ceramic furnace is easy to scald due to mistaken touch of a heating surface after being used without power-off active rapid cooling and temperature warning functions. The heating plate is concave, so that safety is improved, articles can be effectively prevented from falling down, and the heating plate is convenient to use.

Description

Active cooling scald preventing device

Technical Field

The invention relates to the technical field of electric ceramic furnaces, in particular to an active cooling and scalding prevention device.

Background

The electric ceramic stove is still very high at the face temperature under the outage condition to can keep continuing high temperature for a long time, during the outage, be off-state because of the electric ceramic stove display screen, the user is very easy because of the mistake touches the heating face and scalds, and the electric ceramic stove on the market only shows relevant parameters such as power, time, mode under the on-state, does not have outage initiative rapid cooling and temperature warning function, consequently, in order to solve this type of problem, we have proposed an active cooling scald preventing device.

Disclosure of Invention

The active cooling and scalding prevention device provided by the invention solves the problem that an electric ceramic furnace is easy to scald due to mistaken touch of a heating surface after power-off active rapid cooling and temperature warning functions are not available.

In order to achieve the purpose, the invention adopts the following technical scheme:

an active cooling and scalding prevention device comprises a shell, wherein a limiting plate is arranged at the top end of the shell, the top end of the limit plate is provided with a limit groove, one end of the limit groove passes through the limit plate and extends to the inside of the shell, a heating plate is arranged in the shell, a telescopic rod is arranged at the bottom end of the heating plate, one end of the telescopic rod far away from the heating plate is connected with the inner wall of the shell, the circumferential side wall of the telescopic rod is sleeved with a return spring, the bottom end of the heating plate is provided with a temperature sensor, the top end of the shell is provided with an auxiliary power supply, a charging manager, a microprocessor and an MOS tube, a temperature state warning lamp strip is arranged on the circumferential outer wall of the shell, a power failure detection circuit module and a lithium battery are arranged on the inner side wall of the shell, the inside of casing is provided with cooling fan, cooling fan's one end is passed the casing and is extended to the outside.

Preferably, one end of the return spring is connected with the heating plate, and the end of the return spring, which is far away from the heating plate, is connected with the shell.

Preferably, the handle is installed to the outer wall of casing, the handle is the symmetry setting with the axis of casing.

Preferably, the support frame is installed to the bottom of casing, the support frame is the symmetry setting with the axis of casing.

Preferably, charge manager and MOS pipe are located the both sides of cooling fan, microprocessor is located the MOS pipe and keeps away from one side of cooling fan, auxiliary power source is located the one side that the cooling fan was kept away from to the charge manager, the lateral wall of casing is provided with power input interface.

The invention has the beneficial effects that:

1. the voltage of the auxiliary power supply is input into the auxiliary power supply through the power supply input interface, the auxiliary power supply outputs 5VDC constant voltage, the 5VDC voltage is used for charging the lithium battery through the charging manager, and the charging current of the lithium battery is set to be 100mA constant current; the lithium battery supplies power to the microprocessor when the electric ceramic furnace is in a power-off state, and the temperature sensor provides a temperature analog signal for the microprocessor; write program software input microprocessor, microprocessor can convert the temperature analog signal that temperature sensor provided into temperature value signal, if outage detection circuitry module detects commercial power disconnection or shuts down, and when the board temperature value that generates heat was higher than 55 ℃, the cooling fan starts, and the initiative is the board cooling that generates heat, and MOS pipe drive temperature state warning lamp strip is luminous simultaneously to can effectually warn people dangerous touch of asking for, can effectually prevent people to scald.

2. When the temperature of the heating plate is lower than 55 ℃, the fan stops rotating, the temperature state warning light bar is extinguished, and after the cooling process is finished, the microprocessor enters the sleep micro-power standby mode, and limits the articles placed on the heating plate through the limiting plate and the limiting groove to prevent the articles from toppling over.

To sum up, the device can effectually warn people danger and do not touch, and can effectually prevent people and scald, and the board that generates heat is concave formula installation and has improved the security, can effectually prevent that article from empting simultaneously, facilitates the use.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is a schematic circuit structure of the present invention.

Reference numbers in the figures: 1. a power input interface; 2. an auxiliary power supply; 3. a charging manager; 4. a lithium battery; 5. a temperature sensor; 6. a microprocessor; 7. a temperature state warning light bar; 8. an MOS tube; 9. a cooling fan; 10. a power-off detection circuit module; 11. a housing; 12. a limiting plate; 13. a heat generating plate; 14. a limiting groove; 15. a telescopic rod; 16. a return spring; 17. a handle; 18. a support frame.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the type of the electrical appliance provided by the invention is only used for reference. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.

Referring to fig. 1-3, an active cooling and scald preventing device comprises a shell 11, a limiting plate 12 is installed on the top end of the shell 11, a limiting groove 14 is arranged on the top end of the limiting plate 12, one end of the limiting groove 14 penetrates through the limiting plate 12 and extends to the inside of the shell 11, a heating plate 13 is arranged inside the shell 11, a telescopic rod 15 is installed at the bottom end of the heating plate 13, one end, away from the heating plate 13, of the telescopic rod 15 is connected with the inner wall of the shell 11, a reset spring 16 is sleeved on the circumferential side wall of the telescopic rod 15, a temperature sensor 5 is arranged at the bottom end of the heating plate 13, an auxiliary power supply 2, a charging manager 3, a microprocessor 6 and a MOS tube 8 are installed at the top end of the shell 11, a temperature state warning light bar 7 is installed on the circumferential outer wall of the shell 11, a power-off, the inside of casing 11 is provided with cooling fan 9, cooling fan 9's one end passes casing 11 and extends to the outside.

In this embodiment, one end of the return spring 16 is connected to the heat-generating plate 13, and one end of the return spring 16 away from the heat-generating plate 13 is connected to the casing 11.

Further, handle 17 is installed to the outer wall of casing 11, handle 17 is the symmetry setting with the axis of casing 11, support frame 18 is installed to the bottom of casing 11, support frame 18 is the symmetry setting with the axis of casing 11.

Besides, the charging manager 3 and the MOS tube 8 are located on two sides of the cooling fan 9, the microprocessor 6 is located on one side of the MOS tube 8 away from the cooling fan 9, the auxiliary power supply 2 is located on one side of the charging manager 3 away from the cooling fan 9, and the side wall of the casing 11 is provided with the power input interface 1.

A part function definition of an active cooling and scald preventing device is as follows: as follows:

the power input interface 1 is a commercial power input interface and inputs rated voltage of 85-264 Vac;

the AC-DC auxiliary power supply 2 consists of a power management chip BP2902A and peripheral elements, inputs 85-264 Vac and outputs constant voltage 5 Vdc;

the charging manager 3 has the main control IC of TC4056, inputs 5Vdc provided by the auxiliary power supply 2 through programming of the TC4056, and outputs 100mA current to charge the lithium battery 4;

the lithium battery 4 is 3.7V rated voltage and is provided with a protection board WS01, the lithium battery 4 stores energy during the work of the electric ceramic furnace, and provides electric energy for the microprocessor 6 when the electric ceramic furnace is powered off, the microprocessor 6 is powered by the lithium battery 4, a MICROCHIP singlechip PIC16F685 main control chip is adopted, and a 12-bit high-precision AD conversion module is arranged;

the microprocessor 6 converts the temperature analog electric signal output by the temperature sensor 5 into a digital electric signal, programs are compiled and recorded to the microprocessor 6, the microprocessor 6 calculates the temperature analog electric signal output by the temperature sensor 5 according to instructions, and finally a temperature value is obtained, wherein the model of the temperature sensor 5 is TS 502-3274A;

the power failure detection circuit module 10 forms high-low potential logic by a pull-up resistor and a pull-down resistor, the input end is connected with the AC-DC auxiliary power supply 2, the output end is connected with the microprocessor 6, when the power failure detection circuit module 10 is turned off or the commercial power is disconnected, the microprocessor 6 actively starts the cooling fan 9 to cool, and when the temperature value of the heating plate 13 is higher than 55 ℃, the temperature state warning lamp bar 7 emits red light to warn a user that high temperature exists, so that the scalding is prevented by touching; when the temperature value is lower than 55 ℃, the temperature state warning light bar 7 is turned off, and the cooling fan 9 stops rotating and can be touched without scalding danger;

the temperature state warning light bar 7 is provided with a plurality of red light emitting LEDs for warning labels to be backlight, the temperature sensor 5 is a negative temperature coefficient 100k resistance value, is tightly attached to the heating plate 13 of the electric ceramic furnace and can sense the temperature of the heating plate, and the MOS tube 8 is adopted to drive the temperature state warning light bar 7 to emit light and extinguish for enabling the display scheme to be simple and practical.

The working principle is as follows: when the device is used, the device is firstly input into an auxiliary power supply 2 through a power supply input interface 1, the auxiliary power supply 2 outputs 5VDC constant voltage, the 5VDC constant voltage is used for charging a lithium battery 4 through a charging manager 3, and the charging current of the lithium battery is set to be 100mA constant current; the lithium battery 4 supplies power to the microprocessor 6 in the power-off state of the electric ceramic furnace, and the temperature sensor 5 provides a temperature analog signal for the microprocessor 6; write program software input microprocessor 6, microprocessor 6 can convert the temperature analog signal that temperature sensor 5 provided into temperature value signal, if outage detection circuitry module 10 detects the commercial power disconnection or shut down, and generate heat when 13 temperature values of board are higher than 55 ℃, cooling fan 9 starts, initiatively for the board 13 cooling that generates heat, MOS pipe 8 drives temperature state warning light strip 7 and is luminous simultaneously, thereby can effectually warn people's danger and do not touch, can effectually prevent people's scald, fan stall when 13 temperature of the board that generates heat is less than 55 ℃, temperature state warning light strip 7 extinguishes, after the cooling process, microprocessor 6 gets into the little consumption standby of sleeping, and it is spacing to placing the article on the board 13 that generates heat through limiting plate 12 and spacing groove 14, prevent that article from empting.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an active cooling scald preventing device, includes casing (11), its characterized in that, limiting plate (12) are installed on the top of casing (11), the top of limiting plate (12) is provided with spacing groove (14), the inside that limiting plate (12) extend to casing (11) is passed to the one end of spacing groove (14), the inside of casing (11) is provided with heating plate (13), telescopic link (15) are installed to the bottom of heating plate (13), the one end that heating plate (13) were kept away from in telescopic link (15) is connected with the inner wall of casing (11), the circumference lateral wall cover of telescopic link (15) is equipped with reset spring (16), the bottom of heating plate (13) is provided with temperature sensor (5), auxiliary power source (2), charge manager (3), microprocessor (6) and MOS pipe (8) are installed on the top of casing (11), temperature status warning lamp strip (7) are installed to the circumference outer wall of casing (11), outage detection circuitry module (10) and lithium cell (4) are installed to the inside lateral wall of casing (11), the inside of casing (11) is provided with cooling fan (9), the one end of cooling fan (9) is passed casing (11) and is extended to the outside.

2. The active cooling and scalding prevention device according to claim 1, wherein one end of the return spring (16) is connected with the heating plate (13), and one end of the return spring (16) away from the heating plate (13) is connected with the housing (11).

3. The active cooling and scalding prevention device according to claim 1, wherein a handle (17) is installed on an outer wall of the housing (11), and the handle (17) is symmetrically arranged with respect to a central axis of the housing (11).

4. The active cooling and scalding prevention device according to claim 1, wherein a support frame (18) is installed at a bottom end of the housing (11), and the support frame (18) is symmetrically arranged with a central axis of the housing (11).

5. The active cooling and scalding prevention device according to claim 1, wherein the charging manager (3) and the MOS tube (8) are located at two sides of the cooling fan (9), the microprocessor (6) is located at one side of the MOS tube (8) far away from the cooling fan (9), the auxiliary power source (2) is located at one side of the charging manager (3) far away from the cooling fan (9), and the side wall of the housing (11) is provided with the power input interface (1).