CN212875692U - Thermoelectric generation's cooking utensils electrical power generating system - Google Patents

Abstract

The utility model provides a temperature difference power generation's cooking utensils electrical power generating system, this system includes the cooking utensils main part, be provided with the thermoelectric generation unit in the cooking utensils main part, a battery case for supplying power and igniteing, with the thermoelectric generation unit, the charge management module that the battery case is connected, and the pulse ignition module who is connected with the battery case, the thermoelectric generation unit is installed on the temperature rise part of cooking utensils main part, a temperature difference signal for according to the temperature rise part becomes the electric energy with heat energy conversion, charge the battery case through the electric energy that produces, the charge management module is used for controlling the battery case forward and charges, and control the thermoelectric generation unit stop work or cut off the charging circuit when detecting the battery case electric quantity. The utility model discloses utilize the heat of gas-cooker combustion process release to charge, need not often to change the battery, can recycle and guarantee safe in utilizationly.

Description

Thermoelectric generation's cooking utensils electrical power generating system

Technical Field

The utility model relates to a domestic gas cooking utensils technical field especially relates to a thermoelectric generation's cooking utensils electrical power generating system.

Background

The thermoelectric generation directly converts heat energy into electric energy according to the Seebeck effect, and the semiconductor thermoelectric generation piece has the advantages of no noise, no pollution, no abrasion, light weight, long service life and the like, and can be applied to recycling of various waste heat. However, for a long time, due to the restriction of thermoelectric conversion efficiency and the limitation of cost, the thermoelectric generation technology is mainly applied to the advanced fields of aerospace, military and the like. In recent years, the emergence of a batch of high-performance thermoelectric conversion materials provides possibility for the application of thermoelectric generation technology in industrial and civil industries.

Gas cookers are common kitchen equipment, and the control device of the gas cookers and electrical elements such as ignition pins are usually powered by dry batteries or alkaline batteries. Because dry batteries or alkaline batteries have short service lives, the batteries need to be replaced frequently, and the use of the batteries by users is inconvenient. Meanwhile, in the combustion process of the gas stove, a large amount of heat is released, wherein about 40% of the heat is taken away by smoke and is directly wasted through heat dissipation.

In addition, the battery power is limited, so when the battery power is lower than a certain value after the gas stove is used for a period of time, the functions of ignition and the like of the gas stove cannot work normally, so that a user needs to frequently replace the battery in the use process of the gas stove, on one hand, the use cost is increased, on the other hand, the environment is polluted due to improper recovery of the replaced battery, and therefore, the power supply structure of the gas stove is very necessary to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an utilize the heat of gas-cooker combustion process release to charge, need not often to change the battery, can recycle and guarantee safe in utilization's thermoelectric generation's cooking utensils electrical power generating system.

In order to realize foretell main purpose, the utility model provides a pair of thermoelectric generation's cooking utensils electrical power generating system, it includes the cooking utensils main part, be provided with thermoelectric generation unit in the cooking utensils main part, be used for the power supply ignition the battery case, with thermoelectric generation unit the battery case that the battery case is connected charge management module and with the pulse ignition module that the battery case is connected, thermoelectric generation unit installs on the temperature rise part of cooking utensils main part, be used for the basis the temperature difference signal of temperature rise part becomes the electric energy with heat energy conversion, it is right through the electric energy that produces the battery case charges, charge management module is used for controlling the battery case is forward to charge, and is detecting control when the battery case electric quantity is full of thermoelectric generation unit stop work or cut off charging circuit.

In a further scheme, at least one of the cooker main bodies is provided with the temperature rise part which is a fire cover, a combustion disc or other parts with temperature rise when the gas cooker works on the burner of the cooker main body.

In a further scheme, the thermoelectric generation unit comprises a thermoelectric generation module and a boosting constant-current module which are connected in series.

In a further scheme, the thermoelectric generation module comprises a heat conduction surface, a heat dissipation surface and a thermoelectric generation sheet, and the thermoelectric generation sheet is clamped between the heat conduction surface and the heat dissipation surface.

In a further scheme, the boost constant-current module comprises a first boost chip and a second boost chip, a first inductor, a first filter capacitor, a second filter capacitor and a second inductor are sequentially connected between the input end of the first boost chip and the input end of the second boost chip, the first filter capacitor and the second filter capacitor are connected in parallel and are connected with the input end of the power supply, the output end of the first boost chip is connected with the output end of the first power supply, and the output end of the second boost chip is connected with the output end of the second power supply.

In a further scheme, the charging management module comprises a charging management chip, a first triode, a first field effect transistor, a current-limiting resistor and a charging indicator lamp, a first pin of the charging management chip is connected to a base electrode of the first triode, a collector electrode of the first triode is connected to a grid electrode of the first field effect transistor, and a source electrode of the first field effect transistor is connected to a power supply end of the battery box through the current-limiting resistor.

In a further aspect, the battery box is connected to the pulse ignition module for continuously supplying power to the pulse ignition module.

In a further scheme, the battery box is connected to the charging management module and is used for storing the electric energy output by the charging management module, and limiting the stored electric energy to a preset rated voltage value for use by an internal circuit of the cooker.

Therefore, the utility model discloses on the fire lid/burning dish of domestic gas cooking utensils or be close to fire lid/burning dish department and install thermoelectric generation module, the heat conduction face of the heat heating semiconductor thermoelectric generation piece that utilizes the burning to produce, thereby make the both ends face of semiconductor thermoelectric generation piece form the difference in temperature and produced voltage, the electric energy that the thermoelectric generation piece provided passes through boost circuit, promote electric energy voltage to the safe voltage that can satisfy energy storage battery and the operating voltage of charge management module, charge through the rechargeable battery of charge management module in to the battery box, rechargeable battery is the control system power supply of domestic gas cooking utensils, the battery power that the compensation gas-cooker during operation consumed, reach the mesh that need not to change the battery, the difficult problem that needs often to change the battery in the current gas-cooker use has been solved.

In addition, the charging management chip monitors the electric quantity state of the battery in real time during charging, and during charging, the charging indicator lamp is started to inform a user that the battery box is in the charging state; when the electric quantity of the battery reaches a full-charge state, the charging loop is automatically cut off, and meanwhile, the charging indicator lamp is turned off to inform a user that the electric quantity of the battery is fully charged at the moment.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a thermoelectric power generation stove power supply system of the present invention.

Fig. 2 is a schematic circuit diagram of a voltage-boosting constant-current module in an embodiment of a power supply system of a thermoelectric power generation cooker.

Fig. 3 is a schematic circuit diagram of the voltage-boosting constant current module of the second thermoelectric generation unit in the embodiment of the thermoelectric generation cooker power supply system.

Fig. 4 is a schematic circuit diagram of a charging management module in an embodiment of a thermoelectric power generation cooker power supply system.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1, the utility model discloses a thermoelectric generation's cooking utensils electrical power generating system includes the cooking utensils main part, be provided with thermoelectric generation unit 10 in the cooking utensils main part, a battery case 20 for supplying power and igniteing, with thermoelectric generation unit 10, the management module 30 that charges that battery case 20 is connected, and the pulse ignition module 40 of being connected with battery case 20, thermoelectric generation unit 10 is installed on the temperature rise part 100 of cooking utensils main part, a temperature difference signal for according to temperature rise part 100 converts heat energy into electric energy, charge battery case 20 through the electric energy that produces, the management module 30 that charges is used for controlling battery case 20 forward and charges, and control thermoelectric generation unit 10 stop work or cut off the charging circuit when detecting battery case 20 electric quantity full of.

In this embodiment, the thermoelectric generation unit 10 is installed on at least one temperature rising component 100 of the stove body, and the temperature rising component 100 is a fire cover, a burning tray or other components on the burner of the gas stove body, which have a temperature rise when the gas stove operates. For example, one or more thermoelectric generation units 10 are installed on or near a left combustion disc of a gas range, and one or more thermoelectric generation units 10 are installed on or near a right combustion disc of the gas range, such as a first thermoelectric generation unit 10 installed on the left combustion disc of the gas range and a second thermoelectric generation unit 10 installed on the right combustion disc of the gas range.

In the present embodiment, the thermoelectric generation unit 10 includes a thermoelectric generation module 11 and a voltage-boosting constant-current module 12 that are connected in series with each other. The thermoelectric generation module 11 includes a heat conduction surface, a heat dissipation surface and a thermoelectric generation sheet, and the thermoelectric generation sheet is sandwiched between the heat conduction surface and the heat dissipation surface. Preferably, the thermoelectric generation piece is a semiconductor thermoelectric generation piece. It can be seen that, by configuring the semiconductor thermoelectric generation sheet, when there is a certain difference between the temperatures at the two sides of the semiconductor thermoelectric generation sheet, a current is generated in the circuit loop, however, the voltage corresponding to the current is low and is not suitable for charging the battery module, so that after configuring the corresponding boosting constant current module 12 after the semiconductor thermoelectric generation unit 10, the voltage output by the boosting constant current module 12 is suitable for charging the battery and the current is relatively stable.

Of course, semiconductor thermoelectric generation piece can be installed on the kitchen face of a kitchen range, and semiconductor thermoelectric generation piece 3 mountable has on the part of great temperature rise when gas-cooker during operation, and the part that has great temperature rise can be but not limited to kitchen face, furnace end etc. all belong to the utility model discloses a protection range.

Referring to fig. 2, the boost constant current module 12 includes a first boost chip IC1 and a second boost chip IC2, a first inductor L1, a first filter capacitor C1, a second filter capacitor E1 and a second inductor L2 are sequentially connected between an input end of the first boost chip IC1 and an input end of the second boost chip IC2, the first filter capacitor C1 and the second filter capacitor E1 are connected in parallel and connected to the power input terminal VIN, an output end of the first boost chip IC1 is connected to a first power output terminal VDD1, and an output end of the second boost chip IC2 is connected to a second power output terminal VDD.

The first thermoelectric generation unit and the second thermoelectric generation unit of the present embodiment have the same circuit structure, except that the voltage boosting constant current module 12 is independent, and the voltage boosting constant current module of the second thermoelectric generation unit includes filter capacitors E3 and C4, inductors L2 and L4, and voltage boosting chips IC3 and IC4, as shown in fig. 3.

Referring to fig. 4, the charging management module 30 includes a charging management chip U1, a first transistor Q1, a first fet Q2, a current limiting resistor R1, and a charging indicator LED1, wherein a first pin of the charging management chip U1 is connected to a base of the first transistor Q1, a collector of the first transistor Q1 is connected to a gate of the first fet Q2, and a source of the first fet Q2 is connected to a power supply terminal of the battery box 20 through the current limiting resistor R1. Preferably, the charge management chip U1 is an R5F1026A microcontroller.

In the present embodiment, the battery box 20 is connected to the charging management module 30, and is configured to store the electric energy output by the charging management module 30, and limit the stored electric energy to a preset rated voltage value for the internal circuit of the kitchen range. The battery pack 20 is connected to the pulse ignition module 40 for continuously supplying power to the pulse ignition module 40. The pulse ignition module 40 is a pulse igniter, the charging management module 30 can control the pulse igniter to discharge, control the pulse igniter to be turned on and off, and ignite the gas in the stove by using the pulse igniter.

In practical application, the low voltage of the thermoelectric generation module 11 is boosted to 3.3V voltage through the filter capacitors E1 and C1, the inductors L1 and L3, the boost chips IC1 and IC2, and the voltage boosted by the first boost chip IC1 is provided to the charge management chip U1, so that the charge management chip U1 enters a normal operation state, at this time, the charge management chip U1 judges the voltage state of the battery, if the battery voltage is greater than 2.7V, it is judged that the battery is in a full power state, no output is provided from the chip pin 20, the first triode Q1 is not conducted, the first field effect transistor Q2 is not conducted, the boosted voltage does not charge the battery, and the battery is informed to the full power state by the charge indicator light LED 1; if the voltage of the battery is less than 2.4V, the battery is judged to be in a power-off state, a pin 20 of the chip outputs a high level, the first triode Q1 is conducted, the first field-effect tube Q2 is also conducted, and the boosted voltage charges the battery through the current-limiting resistor R1; simultaneously, the charging indicator light LED1 is flashed to inform a user that the battery is in a power-off state and is charging the battery; the single chip can memorize the last state, if the last time is full power, the full power state is firstly prompted at this time, and when the battery voltage is detected to be lower than 2.4V, the charging state is entered.

Therefore, the utility model discloses on the fire lid/burning dish of domestic gas cooking utensils or be close to fire lid/burning dish department and install thermoelectric generation module 11, the heat conduction face of the heat heating semiconductor thermoelectric generation piece that utilizes the burning to produce, thereby make the both ends face of semiconductor thermoelectric generation piece form the difference in temperature and produced voltage, pass through boost circuit to the electric energy that the thermoelectric generation piece provided, promote electric energy voltage to the safe voltage that can satisfy energy storage battery and the operating voltage of charge management module 30, charge to the rechargeable battery in battery case 20 through charge management module 30, rechargeable battery is the control system power supply of domestic gas cooking utensils, the battery power that the compensation gas-cooker during operation consumed, reach the mesh that need not to change the battery, the difficult problem that needs often to change the battery in the current gas-cooker use has been solved.

In addition, the charging management chip U1 monitors the state of charge of the battery in real time, and during charging, activates the charging indicator light to inform the user that the battery box 20 is in a charging state; when the electric quantity of the battery reaches a full-charge state, the charging loop is automatically cut off, and meanwhile, the charging indicator lamp is turned off to inform a user that the electric quantity of the battery is fully charged at the moment.

The embodiment also provides a charging management method of the thermoelectric generation stove power supply system, which is applied to the thermoelectric generation stove power supply system, the method comprises the steps that a heat conducting surface of a thermoelectric generation module 11 is contacted with a component which has temperature rise when a gas stove is burnt, when the gas stove is ignited, flame heat of the gas stove is transferred to the stove surface, the temperature of the stove surface rises, the heat conducting surface of the thermoelectric generation module 11 absorbs heat around the temperature rise component 100 when the gas stove works, temperature difference is generated between the heat conducting surface and a heat radiating surface of the thermoelectric generation module 11, the heat conducting surface of the thermoelectric generation module 11 transfers the heat to a thermoelectric generation sheet and generates output voltage through a Seebeck effect, the output voltage of the thermoelectric generation sheet is boosted and stabilized by a boosting constant current module 12 and then outputs charging voltage to charge a battery box 20, the charging management module 30 controls the battery box 20 to charge in the forward direction, and detects the charging voltage in the battery box 20 as feedback in real time, and controls the temperature difference power generation unit 10 to stop working or cut off the charging loop when detecting that the battery box 20 is fully charged.

Further, the charging management module 30 monitors the electric quantity state of the battery box 20 during charging in real time, and when the battery box 20 is in the charging state, the charging indicator lamp is started to prompt the charging state; when the battery box 20 reaches a full state, the charging management module 30 controls to cut off the charging loop and turn off the charging indicator light to indicate the full state.

Further, after the low voltage of the thermoelectric generation module 11 is boosted to the charging voltage by the boosting constant current module 12, the voltage is output to the charging management chip U1, so that the charging management chip U1 enters a normal operation state, the voltage state of the battery in the battery box 20 is determined, if the battery voltage is smaller than a preset threshold value, the battery is determined to be in a power-off state, the charging management chip U1 controls the signal output pin to output a high level to the base of the first switch, the first triode and the first field effect transistor are both turned on, the charging loop is controlled to be normally turned on, the charging management chip U1 controls the battery box 20 to be charged in the forward direction, and the charging indicator light is flashed to indicate that the battery box 20 is charged in the charging state, wherein the charging management chip U1 compares the voltage difference between the boosting constant current module 12 and the battery to determine whether the charging condition is reached.

Further, if the battery voltage is greater than the preset threshold, it is determined that the battery is in a full power state, the charging management chip U1 controls the signal output pin to have no output, the first transistor and the first fet are both turned off, the charging circuit is controlled to be cut off, and the charging indicator is turned on to indicate that the battery box 20 is in a full power state.

Further, when the current value of the charging loop exceeds a preset threshold value, it can be determined that the charging loop is overloaded, the charging management chip U1 controls the signal output pin to output a low level, the first triode is cut off, and the charging loop is controlled to be cut off.

Further, when a large current or voltage is required, a plurality of thermoelectric generation pieces can be mounted on the temperature rising part 100 of the cooker body, and when a multi-piece structure is adopted, the thermoelectric generation pieces are connected in parallel or in series.

Therefore, the utility model discloses on the fire lid/burning dish of domestic gas cooking utensils or be close to fire lid/burning dish department and install thermoelectric generation module 11, the heat conduction face of the heat heating semiconductor thermoelectric generation piece that utilizes the burning to produce, thereby make the both ends face of semiconductor thermoelectric generation piece form the difference in temperature and produced voltage, pass through boost circuit to the electric energy that the thermoelectric generation piece provided, promote electric energy voltage to the safe voltage that can satisfy energy storage battery and the operating voltage of charge management module 30, charge to the rechargeable battery in battery case 20 through charge management module 30, rechargeable battery is the control system power supply of domestic gas cooking utensils, the battery power that the compensation gas-cooker during operation consumed, reach the mesh that need not to change the battery, the difficult problem that needs often to change the battery in the current gas-cooker use has been solved.

In addition, the charging management chip U1 monitors the state of charge of the battery in real time, and during charging, activates the charging indicator light to inform the user that the battery box 20 is in a charging state; when the electric quantity of the battery reaches a full-charge state, the charging loop is automatically cut off, and meanwhile, the charging indicator lamp is turned off to inform a user that the electric quantity of the battery is fully charged at the moment.

It should be noted that the above is only the preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all the insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a thermoelectric generation's cooking utensils electrical power generating system, includes the cooking utensils main part, its characterized in that:

the kitchen range is provided with thermoelectric generation unit in the main part of the kitchen range, be used for supplying power the battery case of ignition, with thermoelectric generation unit the management module that charges that the battery case is connected and with the pulse ignition module that the battery case is connected, thermoelectric generation unit installs on the temperature rise part of kitchen range main part, be used for the basis the temperature difference signal of temperature rise part converts heat energy into electric energy, and is right through the electric energy that produces the battery case charges, it is used for controlling to charge the management module the battery case is forward to charge, and is detecting control when the battery case electric quantity is full of thermoelectric generation unit stop work or cut off the return circuit that charges.

2. The cooktop power system of claim 1, wherein:

the temperature difference power generation unit is installed to at least one of cooking utensils main part the temperature rise part is installed the thermoelectric generation unit, the temperature rise part is on fire lid, burning tray or other parts that have the temperature rise when the gas-cooker works on the cooking utensils main part furnace end.

3. The cooktop power system of claim 1, wherein:

the temperature difference power generation unit comprises a temperature difference power generation module and a boosting constant-current module which are connected in series.

4. The cooktop power system of claim 3, wherein:

the thermoelectric generation module comprises a heat conduction surface, a heat dissipation surface and thermoelectric generation pieces, wherein the thermoelectric generation pieces are arranged between the heat conduction surface and the heat dissipation surface in a clamping mode.

5. The cooktop power system of claim 3, wherein:

the boost constant-current module comprises a first boost chip and a second boost chip, wherein a first inductor, a first filter capacitor, a second filter capacitor and a second inductor are sequentially connected between the input end of the first boost chip and the input end of the second boost chip, the first filter capacitor and the second filter capacitor are connected in parallel and are connected with the input end of the power supply, the output end of the first boost chip is connected with the output end of the first power supply, and the output end of the second boost chip is connected with the output end of the second power supply.

6. Hob power supply system according to any one of claims 1 to 5, characterized in that:

the charging management module comprises a charging management chip, a first triode, a first field effect transistor, a current-limiting resistor and a charging indicator lamp, wherein a first pin of the charging management chip is connected to a base electrode of the first triode, a collector electrode of the first triode is connected to a grid electrode of the first field effect transistor, and a source electrode of the first field effect transistor is connected to a power supply end of the battery box through the current-limiting resistor.

7. Hob power supply system according to any one of claims 1 to 5, characterized in that:

the battery box is connected to the pulse ignition module and used for continuously supplying power to the pulse ignition module.

8. Hob power supply system according to any one of claims 1 to 5, characterized in that:

the battery box is connected to the charging management module and used for storing the electric energy output by the charging management module and limiting the stored electric energy to a preset rated voltage value for the use of an internal circuit of the kitchen range.

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