CN205356724U - Electromagnetic heating electric heat pot of low stand -by power consumption - Google Patents

Abstract

The utility model provides an electromagnetic heating electric heat pot of low stand -by power consumption, including operation display circuit, power, control electromagnetic heating's main control circuit, the operation display circuit includes display module and control chip, its characterized in that, the electric heat pot includes operating condition and standby state, when standby state control chip output off signal is with the power supply of supply interruption to main control circuit. Thereby, the great main control circuit outage of power consumption when standby state to the stand -by power consumption obtains very big reduction, has realized the energy -conservation of electric heat pot.

Description

An electromagnetic heating electric heating pan with low standby power consumption

technical field

The utility model relates to the field of kitchen cooking utensils, in particular to an electromagnetic heating electric heating pot with low standby power consumption.

Background technique

At present, electric heating pots with electromagnetic heating, such as electric rice cookers, electric pressure cookers, and electric saucepans, are made using the principle of electromagnetic induction heating. It is composed of device, controller and ferromagnetic material liner. When in use, an alternating current is fed into the heating coil, and an alternating magnetic field is generated around the coil. Most of the magnetic field lines of the alternating magnetic field pass through the inner pot, and a large amount of eddy current is generated in the inner pot, thereby generating the heat required for cooking. When the electric hot pot is in standby state, the heating coil is turned off. However, components other than the heating coil are still in working condition, which consumes a lot of energy, which is not conducive to energy saving.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electromagnetic heating electric heating pan with low standby power consumption.

In order to achieve the above object, the technical scheme of the utility model is as follows:

An electromagnetic heating electric heating pan with low standby power consumption, including an operation display circuit, a power supply, and a main control circuit for controlling electromagnetic heating, the operation display circuit includes a display module and a control chip, and it is characterized in that the electric heating pan includes a working state and a standby state. In the standby state, the control chip outputs a disconnection signal to cut off the power supply to the main control circuit.

In an embodiment of the present invention, the main control circuit includes a main control power circuit and a main control module, the input end of the main control module is electrically connected to the output end of the main control power circuit, and the output of the control chip is turned off in the standby state. On signal to cut off the power supply to the main control power supply circuit.

In an embodiment of the utility model, the control chip is connected to the first control switch, the input end of the first control switch is electrically connected to the power supply, and the output end of the first control switch is electrically connected to the main control power supply circuit. The open signal is given to the first control switch to cut off the power supply of the power supply to the main control power supply circuit.

In an embodiment of the present invention, the main control circuit further includes an electromagnetic heating main control circuit, and in the standby state, the control chip outputs a disconnection signal to cut off the power supply to the electromagnetic heating main control circuit.

In an embodiment of the utility model, the control chip is connected to the second control switch, the input end of the second control switch is electrically connected to the power supply, and the output end is electrically connected to the electromagnetic heating main control circuit, and the output of the control chip is in the standby state. The disconnection signal is given to the second control switch to cut off the power supply of the power supply to the electromagnetic heating main control circuit.

In an embodiment of the present invention, the second control switch and the electromagnetic heating main control circuit are also electrically connected to an EMI filter circuit, and the control chip outputs a disconnection signal to the second control switch to cut off the power supply in the standby state. Power supply for EMI filter circuit and electromagnetic heating main control circuit.

In an embodiment of the present invention, the control switch includes an input end, an output end and a control end, the input end is electrically connected to a power supply, the output end is electrically connected to the main control circuit, and the control end is electrically connected to a control chip.

In an embodiment of the utility model, the control switch is a relay.

In an embodiment of the present invention, the second control switch is a single-pole double-throw relay, the output end of the single-pole double-throw relay includes a third output end and a fourth output end, and the third output end is electrically connected to the EMI A filter circuit, the fourth output terminal is electrically connected to the operation display circuit, and the output terminals of the EMI filter circuit are respectively electrically connected to the operation display circuit and the electromagnetic heating main control circuit.

In an embodiment of the present invention, in the standby state, the control chip outputs a disconnection signal to the display module to cut off the power supply to it.

In the utility model, the electric heating pot includes a working state and a standby state, and in the standby state, the control chip outputs a disconnection signal to cut off the power supply to the main control circuit. Therefore, in the standby state, the main control circuit that consumes a large amount of power is powered off, thereby greatly reducing the standby power consumption and realizing the energy saving of the electric heating pan.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the illustrations of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the circuit module diagram of the electric heating pot of the first embodiment of the utility model;

Fig. 2 is the circuit diagram of the electric heating pot of the first embodiment of the utility model;

Fig. 3 is the circuit diagram of the electric heating pot of the second embodiment of the utility model;

Reference signs:

22-Switching power supply circuit; 23-Display board power supply circuit; 24-Operation display circuit; 25-Main control module; 26-Main control power supply circuit; 27-Electromagnetic heating main control circuit; 28-EMI filter circuit; 31-First Control switch; 32, 42 - the second control switch.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

first embodiment

The utility model provides an electromagnetic heating electric heating pot with low power consumption. The electromagnetic heating electric heating pot is kitchen cooking utensils such as electromagnetic heating electric rice cooker, electromagnetic heating electric pressure cooker or electromagnetic heating electric stew pot. Please refer to Fig. 1 and Fig. 2 , the electromagnetic heating electric heating pan includes a power supply, an operation display circuit 24, a main control circuit for controlling electromagnetic heating, the operation display circuit 24 includes a display module and a control chip, the control chip is electrically connected to the display module, and the electric heating pan includes a working state and standby state, the working state refers to the stage from the start of cooking to the completion of cooking by the electric heating pan, and the standby state refers to the stage before starting cooking and after the cooking is completed. In the standby state, the control chip outputs a disconnection signal to cut off the power supply Power supply to the main control circuit.

Therefore, in the standby state, the main control circuit with large power consumption is powered off, while the control chip consumes less power, thereby greatly reducing the standby power consumption. Generally, the standby power consumption can reach 0.5W or less 0.5W, realizing the energy saving of the electric heating pan.

In this embodiment, the main control circuit includes a main control power supply circuit 26 and a main control module 25, the input terminal of the operation display circuit 24 and the input terminal of the main control power supply circuit 26 are respectively electrically connected to the power supply, and the main control power supply circuit 26 is electrically connected to the power supply. The control module 25 is electrically connected to the output terminal of the main control power supply circuit 26, and the control chip outputs a disconnection signal to control the main control power supply circuit 26 and the main control module 25 to be powered off in the standby state.

In this embodiment, the control chip is connected to the first control switch 31 through a triode, the input end of the first control switch 31 is electrically connected to the power supply, and its output end is electrically connected to the main control power supply circuit 26, and the control chip is in the standby state. The disconnect signal is output to the first control switch 31 to cut off the power supply to the main control power circuit 26 , thereby also cutting off the power supply to the main control module 25 .

In this embodiment, the main control circuit also includes an electromagnetic heating main control circuit 27 controlled by the main control module 25. The main control module 25 controls whether to heat by controlling the electromagnetic heating main control circuit 27. In the standby state When the control chip outputs a disconnection signal to cut off the power supply to the electromagnetic heating main control circuit 27. Specifically, the control chip is connected to the second control switch 32, the input end of the second control switch 32 is electrically connected to the power supply, and its output end is electrically connected to the electromagnetic heating main control circuit 27, and the output of the control chip is disconnected in the standby state. The signal is sent to the second control switch 32 to cut off the power supply to the electromagnetic heating main control circuit 27 . Thereby further realizing energy saving.

In this embodiment, the first control switch 31 includes a first input terminal, a first output terminal and a first control terminal, and the second control switch 32 includes a second input terminal, a second output terminal and a second control terminal. end, the first input end and the second input end are electrically connected to the power supply respectively, the first output end is electrically connected to the main control power supply circuit 26, the second output end is electrically connected to the electromagnetic heating main control circuit 27, and the first output end is electrically connected to the main control circuit 27 of the electromagnetic heating. The first control terminal and the second control terminal are connected to the control chip, and the first control terminal and the second control terminal are controlled by the control chip. In this embodiment, the first control switch 31 and the second control switch 32 are relays, and the control chip is a display panel microcontroller.

In this embodiment, in order to filter and prevent electromagnetic interference, the electric heating pan further includes an EMI filter circuit 28, and the EMI filter circuit 28 is located between the second control switch 32 and the electromagnetic heating main control circuit 27, that is, the first The second output terminal of the second control switch 32 is electrically connected to the EMI filter circuit 28, and the output terminal of the EMI filter circuit 28 is electrically connected to the electromagnetic heating main control circuit 27. When in standby mode, the control chip outputs a disconnect signal to the second control switch 32 to cut off the power supply Power supply to the EMI filter circuit 28 and the electromagnetic heating main control circuit 27. Therefore, the EMI filter circuit 28 and the electromagnetic heating main control circuit 27 do not need to consume power during standby. In other embodiments of the present invention, the EMI filter loop may not be provided.

In this embodiment, the control chip controls the conduction of the first control switch 31 and the second control switch 32 respectively through the first transistor and the second transistor. Specifically, in this embodiment, the The heating pot also includes a first switch control circuit and a second switch control circuit, the first switch control circuit controls the first control switch 31, and the first switch control circuit includes a first triode, a first two The pole tube, the first resistor and the +12V power supply output terminal, a parallel diode and a relay control terminal are arranged between the +12V power supply output terminal and the collector of the first triode, and the emitter of the first triode is grounded , the base of the first triode is electrically connected to the operation display circuit 24 via a first resistor. The second switch control circuit controls the second control switch 32 , and the principle of the second switch control circuit is similar to that of the first switch control circuit, which will not be repeated here.

In this embodiment, the electric heating pan also includes a switching power supply circuit 22 and a display panel power supply circuit 23, the power supply is electrically connected to the switching power supply circuit 22 and the second control switch 32 respectively, and the switching power supply circuit 22 is respectively connected to the display panel power supply The circuit 23 is electrically connected to the first control switch 31 , and the input end of the operation display circuit 24 is electrically connected to the output end of the display board power supply circuit 23 .

In this embodiment, in order to further save energy, the control chip outputs a disconnection signal to the display module to cut off the power supply to it in the standby state.

In this embodiment, the voltage of the power supply is generally grid voltage, generally 220V.

second embodiment

Fig. 3 is the circuit diagram of the second embodiment of the utility model, and the circuit of Fig. 3 is similar to the circuit of Fig. 2, and the main difference between this embodiment and the first embodiment is that the EMI filter circuit 28 can also operate circuits such as the display circuit 24 For filtering and anti-electromagnetic interference.

Please refer to Fig. 3, in this embodiment, the second control switch 42 is a SPDT relay, and the output terminals of the SPDT relay include a third output terminal and a fourth output terminal, and the third output terminal Electrically connected to the EMI filter circuit 28, the fourth output terminal is electrically connected to the operation display circuit 24, specifically the fourth output terminal is electrically connected to the operation display circuit 24 through the switching power supply circuit 22 and the display panel power supply circuit 23, and the EMI filter circuit The output terminals of 28 are electrically connected to the operation display circuit 24 and the electromagnetic heating main control circuit 27 respectively. Specifically, the output terminals of the EMI filter circuit 28 are electrically connected to the operation display circuit 24 via the switching power supply circuit 22 and the display panel power supply circuit 23 . When the operation display circuit 24 controls the SPDT relay so that the power supply is connected to the third output terminal, the voltage output by the power supply is sent to the electromagnetic heating main control circuit 27 and the switching power supply circuit 22 respectively after passing through the EMI filter circuit 28, Now it is the working state; when the operation display circuit 24 controls the SPDT relay so that the power supply is connected to the fourth output terminal, the EMI filter circuit 28 is disconnected at this time, so that the voltage of the power supply is directly output to the switching power supply circuit 22, This corresponds to the standby state. In this embodiment, since the EMI filter circuit 28 can filter and resist interference to most circuits in the electric heating pan, the working stability of the electric heating pan is improved.

In the present invention, electrical connection refers to direct electrical connection or indirect electrical connection between two front and rear modules or between circuits.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. An electromagnetic heating electric heating pot with low standby power consumption, comprising an operation display circuit, a power supply, and a main control circuit for controlling electromagnetic heating, the operation display circuit includes a display module and a control chip, and it is characterized in that the electric heating pot includes a working state and a standby state. In the standby state, the control chip outputs a disconnect signal to cut off the power supply to the main control circuit. 2. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 1, wherein the main control circuit comprises a main control power supply circuit and a main control module, and the input end of the main control module is electrically connected to the main control The output terminal of the power supply circuit, in the standby state, the control chip outputs a disconnection signal to cut off the power supply from the power supply to the main control power supply circuit. 3. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 2, wherein the control chip is connected to a first control switch, the input end of the first control switch is electrically connected to a power supply, and the output end of the first control switch is electrically connected to a power supply. The main control power supply circuit is connected, and the control chip outputs a disconnection signal to the first control switch in the standby state to cut off the power supply to the main control power supply circuit. 4. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 2, wherein the main control circuit also includes an electromagnetic heating main control circuit, and when in a standby state, the control chip outputs a disconnection signal to cut off the power supply. The power supply of the electromagnetic heating main control circuit. 5. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 4, wherein the control chip is connected to a second control switch, the input end of the second control switch is electrically connected to a power supply, and the output end of the second control switch is electrically connected to a power supply. The electromagnetic heating main control circuit is connected, and in the standby state, the control chip outputs a disconnection signal to the second control switch to cut off the power supply to the electromagnetic heating main control circuit. 6. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 5, characterized in that, an EMI filter circuit is also electrically connected between the second control switch and the electromagnetic heating main control circuit, and in the standby state The control chip outputs a disconnection signal to the second control switch to cut off the power supply to the EMI filter loop and the electromagnetic heating main control circuit. 7. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 3, 5 or 6, wherein the control switch includes an input terminal, an output terminal and a control terminal, the input terminal is electrically connected to a power supply, and the output terminal The terminal is electrically connected to the main control circuit, and the control terminal is electrically connected to the control chip. 8. The electromagnetic heating electric heating pan with low standby power consumption according to claim 7, characterized in that the control switch is a relay. 9. The electromagnetic heating electric heating pan with low standby power consumption as claimed in claim 6, wherein the second control switch is a single-pole double-throw relay, and the output end of the single-pole double-throw relay includes a third output end and The fourth output terminal, the third output terminal is electrically connected to the EMI filter circuit, the fourth output terminal is electrically connected to the operation display circuit, and the output terminals of the EMI filter circuit are respectively electrically connected to the operation display circuit and the electromagnetic heating main control circuit. 10. The electromagnetic heating electric heating pan with low standby power consumption according to any one of claims 1-6, 9, characterized in that, in the standby state, the control chip outputs a disconnection signal to the display module to cut off the power supply to it .