CN214675117U

CN214675117U - Anti-dry burning stove circuit and stove

Info

Publication number: CN214675117U
Application number: CN202120813630.6U
Authority: CN
Inventors: 黄宏
Original assignee: Guangdong Gelaru Energy Saving Technology Co ltd
Current assignee: Guangdong Gelaru Energy Saving Technology Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-11-09
Anticipated expiration: 2031-04-20

Abstract

The dry-burning prevention stove circuit comprises a coupler detection circuit, a main control circuit, an IGBT drive circuit, an input circuit and an output interface; one end of the coupler detection circuit is used for being connected with a thermosensitive sensor of the cooker, and the other end of the coupler detection circuit is connected with the main control circuit and used for detecting the temperature of the coupler detection circuit and judging whether the coupler detection circuit is dry-burning-free liquid or not; the main control circuit is connected with the IGBT drive circuit and used for receiving the signal of the coupler detection circuit and controlling the output of the IGBT drive circuit; input circuit is through IGBT drive circuit and output interface connection to make input circuit export the electric energy of receiving to the drum that generates heat through output interface under IGBT drive circuit's allotment on, this application can in time control the heating power of boiler and relative accurate temperature control, the dry combustion method function of preventing that contains, the heating process does not have naked light, pan and stove relatively fixed, can not take place to remove, lower comparing, this kind of neotype stove has more superior security performance, effectively prevent accident and take place.

Description

Anti-dry burning stove circuit and stove

Technical Field

The utility model relates to a kitchen guarding's electrical apparatus field especially relates to prevent dry combustion method stove circuit.

Background

When a conventional household boiler is used for heating, for example, natural gas or coal gas, in case of unskilled skill of an operator, besides difficulty in controlling accurate temperature, scalding or burning accidents are easy to happen; when the heating ring is used for heating or electromagnetic heating, under the condition that open fire is not available but other protection devices are not available, dangerous conditions such as dry burning and the like are easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the technical scheme provides the dry-burning prevention stove circuit which can accurately and effectively detect the turn-off power output when no liquid or food exists in the cooker, so that the fire hazard caused by dry burning is avoided, and the power can be controlled according to the temperature to achieve the effects of energy conservation and environmental protection.

In order to achieve the purpose, the technical scheme is as follows:

the dry-burning prevention stove circuit comprises a coupler detection circuit, a main control circuit, an IGBT drive circuit, an input circuit and an output interface;

one end of the coupler detection circuit is used for being connected with a thermosensitive sensor of the cooker, and the other end of the coupler detection circuit is connected with the main control circuit and used for detecting the temperature of the coupler detection circuit and judging whether the coupler detection circuit is dry-burning-free liquid or not;

the main control circuit is connected with the IGBT drive circuit and used for receiving signals of the coupler detection circuit and controlling the output of the IGBT drive circuit;

the input circuit is connected with the output interface through the IGBT drive circuit, so that the input circuit outputs the received electric energy to the heating wire coil through the output interface under the allocation of the IGBT drive circuit.

In some embodiments, the coupler detection circuit includes an input voltage, wherein the input voltage is connected to the lower coupler through a resistor R27, the resistor R27 also being connected to the master control circuit.

In some embodiments, the output of the IGBT driver circuit is at the base of transistor Q1, the emitter of transistor Q1 is connected to ground, and the collector is connected to the output interface.

In some embodiments, the output interface is grounded through a resistor R21, a resistor R18, a resistor R31 and a resistor R34, and is also connected to the master control circuit.

In some embodiments, the input circuit is connected to the master circuit through a potentiometer RW 1.

The application still provides a stove, including the shell and as above prevent dry combustion method stove circuit, still include with prevent the lower coupler of dry combustion method stove circuit electricity connection, the coupler is used for communicating with the last coupler of pan down, still includes the heating wire coil.

The beneficial effect of this application does:

this application is more convenient than current domestic boiler installation, and the appearance is more novel, and production technology is simple relatively, can in time control the heating power and the relatively accurate temperature control of boiler, and the dry combustion method function of preventing that contains, heating process do not have naked light, and pan and stove relatively fixed can not take place to remove, compares down, and this kind of neotype stove has more superior security performance, effectively prevents the accident and takes place.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic circuit diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-2, the dry-burning prevention stove circuit includes a coupler detection circuit 1, a main control circuit 2, an IGBT driving circuit 3, an input circuit 4, and an output interface 5;

one end of the coupler detection circuit 1 is used for being connected with a thermosensitive sensor of a cooker, and the other end of the coupler detection circuit is connected with the main control circuit 2 and used for detecting the temperature of the coupler detection circuit and judging whether the coupler detection circuit does not burn liquid or not;

the main control circuit 2 is connected with the IGBT drive circuit 3 and used for receiving the signal of the coupler detection circuit 1 and controlling the output of the IGBT drive circuit 3;

the input circuit 4 is connected with the output interface 5 through the IGBT driving circuit 3, so that the input circuit 4 outputs the received electric energy to the heating wire coil through the output interface 5 under the allocation of the IGBT driving circuit 3.

The working principle is as follows: the base of the stove and the bottom plate of the cooker are respectively provided with a coupler for guiding, before the product is added, the cooker is arranged on the stove in an aligned mode, the two couplers are smoothly connected, and heating can be carried out by pressing a switch. In the heating process, open fire does not exist, and the cooker does not need to be moved;

secondly, if the liquid in the cooker is burnt, the continuous heating temperature can be abnormally increased, the lower coupler feeds back the temperature of the cooker to the main control circuit after detecting the temperature, the main control circuit can judge whether the cooker is burnt without the liquid at present according to the temperature feedback information, so that a signal is output to the IGBT drive circuit, the IGBT drive circuit controls the opening and closing between the input circuit and the output interface by utilizing the characteristics of the silicon controlled rectifier, and the power output to the heating wire coil is changed to adjust the output power of the IGBT drive circuit.

According to the principle, the dry burning prevention device can play a role in preventing dry burning, and is superior to other types of boilers in temperature control and power control in heating, accidents can be effectively prevented, and the life safety of users is guaranteed.

In this embodiment, the coupler detection circuit 1 includes an input voltage, wherein the input voltage is connected with the lower coupler through a resistor R27, the resistor R27 is further connected with the main control circuit 2, the input voltage is +5V, and is provided by the switching power supply, so that the voltage value obtained by the pin 13 of the main control chip U2 is different according to the characteristic that the resistance value of the thermistor in the cookware changes along with the temperature, and the cookware is in which state.

In this embodiment, the output end of the IGBT driving circuit 3 is located on the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the output interface 5, the pin 1 of the main control chip U2 outputs different PWM signals to the IGBT driving module, and at this time, the IGBT driving module also outputs different PWM signals to the transistor Q1 according to the signals, so that the grounding frequency of the input circuit is also changed, thereby changing the power output to the heater coil, and playing a role in regulation.

In this embodiment, the output interface 5 is grounded through the resistor R21, the resistor R18, the resistor R31 and the resistor R34, and is further connected to the main control circuit 2, and the pins 2 and 3 of the main control chip U2 detect the power of the output interface and output the power to the IGBT driving circuit in time to change the output power.

In this embodiment, the input circuit 4 is connected to the main control circuit 2 through a potentiometer RW1 to adjust the power offset.

As shown in fig. 2, the present application further provides a stove, which includes a housing 6 and the above dry-burning-proof stove circuit, and further includes a lower coupler 7 electrically connected to the dry-burning-proof stove circuit, where the lower coupler 7 is used for communicating with an upper coupler of a pot, and further includes a heating wire coil.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the scope of the present application, which is within the scope of the present application, except that the same or similar principles and basic structures as the present application may be used.

Claims

1. The dry-burning-prevention stove circuit is characterized by comprising a coupler detection circuit (1), a main control circuit (2), an IGBT drive circuit (3), an input circuit (4) and an output interface (5);

one end of the coupler detection circuit (1) is used for being connected with a thermosensitive sensor of a cooker, and the other end of the coupler detection circuit is connected with the main control circuit (2) and used for detecting the temperature of the coupler detection circuit and judging whether the coupler detection circuit is dry-fired or not;

the main control circuit (2) is connected with the IGBT driving circuit (3) and used for receiving signals of the coupler detection circuit (1) and controlling the output of the IGBT driving circuit (3);

the input circuit (4) is connected with the output interface (5) through the IGBT driving circuit (3), so that the input circuit (4) outputs the received electric energy to the heating wire coil through the output interface (5) under the condition of the distribution of the IGBT driving circuit (3).

2. The dry-fire prevention stove circuit according to claim 1, characterized in that: the coupler detection circuit (1) comprises an input voltage, wherein the input voltage is connected with the lower coupler through a resistor R27, and the resistor R27 is also connected with the main control circuit (2).

3. The dry-fire prevention stove circuit according to claim 2, characterized in that: the output end of the IGBT driving circuit (3) is arranged on the base electrode of a triode Q1, the emitting electrode of the triode Q1 is grounded, and the collecting electrode of the triode Q1 is connected with the output interface (5).

4. The dry-fire prevention stove circuit according to claim 3, characterized in that: the output interface (5) is grounded through a resistor R21, a resistor R18, a resistor R31 and a resistor R34, and is also connected to the main control circuit (2).

5. The dry-fire prevention stove circuit according to claim 4, characterized in that: the input circuit (4) is connected to the master control circuit (2) via a potentiometer RW 1.

6. A stove, characterized by comprising a housing (6) and the dry-burning prevention stove circuit according to any one of claims 1 to 5, further comprising a lower coupler (7) electrically connected with the dry-burning prevention stove circuit, wherein the lower coupler (7) is used for communicating with an upper coupler of a pot, and further comprises a heating wire coil.