CN209966118U

CN209966118U - Adjustable temperature control device of electric kettle

Info

Publication number: CN209966118U
Application number: CN201721862064.8U
Authority: CN
Inventors: 张玲忠
Original assignee: JIANGSU XISHAN SPECIALIZED SECONDARY SCHOOL
Current assignee: JIANGSU XISHAN SPECIALIZED SECONDARY SCHOOL
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2020-01-21
Anticipated expiration: 2027-12-27

Abstract

The utility model discloses an adjustable temperature control device of an electric kettle, which comprises a heating power adjusting circuit, a main control circuit, a heating display circuit and an indicator light circuit; the heating power regulating circuit is electrically connected with the main control circuit; the main control circuit is electrically connected with the heating display circuit and the indicator light circuit. The utility model adjusts the heating power of the heating power adjusting circuit through the key group in the main control circuit; the heat preservation temperature is preset through a microcontroller of the main control circuit, and a nixie tube of the heating display circuit is controlled to display the percentage of the current heating power in the rated power, the current temperature, the preset heat preservation temperature and the water boiling time. The utility model discloses both can the controlled temperature can the controlled power again, compatible overwhelming majority's electric kettle, with low costs moreover, made things convenient for daily life needs greatly, suitable popularization and application.

Description

Adjustable temperature control device of electric kettle

Technical Field

The utility model relates to an electric kettle field especially relates to an adjustable temperature control device of electric kettle.

Background

In some occasions, water with temperature requirement is needed, and boiled water with certain temperature is needed sometimes. The traditional thermos mainly adopts a reed switch type thermos as a main part, and does not have a thermos with a temperature control function and controllable power. When the boiled water needs to be used, the boiled water can only wait for natural cooling, which is troublesome; there is no hot water kettle and controller which can provide warm and boiled water and regulate the power of the water heater. In some regions, high-power electric appliances cannot be used due to some limitations, most of the hot water kettles on the market have the power of 1000-2000W, cannot be used in some limited regions, and cannot control the temperature and the power at the same time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems mentioned in the background technology part through an adjustable temperature control device of an electric kettle.

To achieve the purpose, the utility model adopts the following technical proposal:

an adjustable temperature control device of an electric kettle comprises a heating power adjusting circuit, a main control circuit, a heating display circuit and an indicator light circuit; the heating power regulating circuit is electrically connected with the main control circuit; the main control circuit is electrically connected with the heating display circuit and the indicator light circuit.

Specifically, the heating power adjusting circuit comprises a bidirectional thyristor SG1, a photocoupler U1, a heater P2, an AC-DC converter AC-DC1, a connection terminal J1, a connection terminal J2, a resistor R1, a resistor R2, a resistor R3, a capacitor C3, and a resistor R5, wherein a first anode of the bidirectional thyristor SG1 is connected with one end of the resistor R1, a connection terminal J1, and a first AC pin of the AC-DC converter AC-DC1, the other end of the resistor R1 is connected with a first anode of the photocoupler U1, the other end of the resistor R1 is connected with the capacitor C1 in series and then connected with a second anode of the bidirectional thyristor SG1, one end of the resistor R1, the connection terminal J1, the other end of the resistor R1 is connected with a control electrode of the bidirectional thyristor SG1 and a second anode of the photocoupler U1, an anode and a cathode of the photocoupler U1 are respectively connected with a power supply terminal VCC, a resistor R1 and a PWM, a second alternating current pin of the alternating current-direct current converter AC-DC1 is connected with a connection terminal J1 and a connection terminal J2, a heater P2 is connected with a direct current pin of the alternating current-direct current converter AC-DC1, and a grounding pin of the alternating current-direct current converter AC-DC1 is grounded.

Particularly, the heating display circuit comprises a nixie tube for displaying rated power percentage, current temperature, preset heat preservation temperature and water boiling time.

The adjustable temperature control device of the electric kettle can adjust the heating power of the heating power adjusting circuit through the key group in the main control circuit; the heat preservation temperature is preset through a microcontroller of the main control circuit, and a nixie tube of the heating display circuit is controlled to display the percentage of the current heating power in the rated power, the current temperature, the preset heat preservation temperature and the water boiling time. The utility model discloses both can the controlled temperature can the controlled power again, compatible overwhelming majority's electric kettle, with low costs moreover, made things convenient for daily life needs greatly, suitable popularization and application.

Drawings

Fig. 1 is a structural diagram of a heating power regulating circuit provided in an embodiment of the present invention;

fig. 2 is a structural diagram of a heating display circuit provided in an embodiment of the present invention;

fig. 3 is a circuit structure diagram of an indicator light provided by an embodiment of the present invention;

fig. 4 is a structure diagram of a main control circuit provided in an embodiment of the present invention;

fig. 5 is a diagram of a power regulation auxiliary circuit according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The adjustable temperature control device of the electric kettle in the embodiment specifically comprises a heating power adjusting circuit, a main control circuit, a heating display circuit and an indicator light circuit; the heating power regulating circuit is electrically connected with the main control circuit; the main control circuit is electrically connected with the heating display circuit and the indicator light circuit. In this embodiment, as shown in fig. 1, the heating power adjusting circuit includes a triac SG1, a photocoupler U1, a heater P2, an AC-DC converter AC-DC1, a connection terminal J1, a connection terminal J2, a resistor R1, a resistor R2, a resistor R3, a capacitor C3, and a resistor R5, a first anode of the triac SG1 is connected to one end of the resistor R1, one end of the resistor R2, a connection terminal J1, and a first AC pin of the AC-DC converter AC-DC1, another end of the resistor R1 is connected to a first anode of the photocoupler U1, another end of the resistor R2 is connected in series to a capacitor C3, and then connected to a second anode of the triac SG1, one end of the resistor R5, and a connection terminal J2, another end of the resistor R5 is connected to a control electrode of the triac SG1 and a second anode of the photocoupler U1, and a cathode of the photocoupler U1 are connected to VCC and a power supply, The resistor R3 and the resistor R3 are connected with the PWM modulation end, the second alternating current pin of the alternating current-direct current converter AC-DC1 is connected with a connection terminal J1 and a connection terminal J2, the heater P2 is connected with the direct current pin of the alternating current-direct current converter AC-DC1, and the grounding pin of the alternating current-direct current converter AC-DC1 is grounded.

In this embodiment, as shown in fig. 2, fig. 2 is a structure diagram of a heating display circuit provided in the embodiment of the present invention, in the diagram, U4 and U5 both adopt 74HC595 displacement buffers, and a nixie tube J4 of the heating display circuit is used for displaying rated power percentage, current temperature, preset heat preservation temperature and water boiling time. As shown in fig. 3, fig. 3 is the circuit structure diagram of the indicating lamp provided by the embodiment of the present invention, in which the LED1 is a power indicating lamp, and the LED2, the LED3 and the LED4 are respectively a current temperature indicating lamp, a preset temperature indicating lamp and a time indicating lamp for boiling water. As shown in fig. 4, fig. 4 is the structure diagram of the main control circuit provided by the embodiment of the present invention, three SWPB buttons in the diagram are respectively a display switch button, an increase button and a decrease button from top to bottom according to the direction of the circuit diagram, P3 and P4 are heaters, and microcontroller U3 adopts an 8-bit microcontroller of a domestic macro-crystal IAP15W61S 4. As shown in fig. 5, fig. 5 is a diagram of a power regulation auxiliary circuit structure provided by an embodiment of the present invention, and the auxiliary heating power regulation circuit completes the heating power regulation.

The utility model discloses well main control circuit uses 8 bit microcontroller control bidirectional thyristor SG1 to control and detect the pure resistance load more than 1000W, realizes power control. The utility model discloses provide the warm water of giving birth to and ripe warm water respectively, the power that can regulate and control the water heater reaches the heat preservation effect. The microcontroller controls the optocoupler and then controls the load power of the bidirectional thyristor control circuit, and main data is displayed by a nixie tube. The temperature acquisition uses a thermocouple to acquire temperature, and the current water temperature can be acquired through the operation of a microcontroller when a voltage analog value is acquired. When the power supply is used, (1) the plug is connected with commercial power, and a default power preset value can be displayed after the power supply is powered on; (2) press the setting button, switch cyclically, power control interface. The value represents the percentage power setting of the rated power, and the numerical setting is made by adding a decrease button, e.g. 50% of the preset value, then the hot water is made at 50% of the rated power. The rated power is 1500w, and the actual operation power is 750w +/-20 w for water boiling. (3) The current temperature display interface numerical value represents the currently detected temperature, and the thermocouple placing position is a temperature display interface preset for the kettle mouth. (4) The numerical value represents the preset heat preservation temperature, the control is carried out by adding a reduction button, and the heating is stopped and the heat preservation is carried out when the temperature setting is sent to the preset value. (existing limitation: the reed switch type kettle has an upper temperature limit and is powered off after reaching the upper temperature limit. (5) a display interface of the water boiling time, wherein the numerical value is displayed as the current water boiling time in minutes.

The utility model can adjust the heating power of the heating power adjusting circuit through the key group in the main control circuit; the heat preservation temperature is preset through a microcontroller of the main control circuit, and a nixie tube of the heating display circuit is controlled to display the percentage of the current heating power in the rated power, the current temperature, the preset heat preservation temperature and the water boiling time. The utility model discloses both can the controlled temperature can the controlled power again, compatible overwhelming majority's electric kettle, with low costs moreover, made things convenient for daily life needs greatly, suitable popularization and application.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An adjustable temperature control device of an electric kettle is characterized by comprising a heating power adjusting circuit, a main control circuit, a heating display circuit and an indicator light circuit; the heating power regulating circuit is electrically connected with the main control circuit; the main control circuit is electrically connected with the heating display circuit and the indicator light circuit; the heating power regulating circuit comprises a bidirectional thyristor SG1, a photoelectric coupler U1, a heater P2, an AC-DC converter AC-DC1, a connection terminal J1, a connection terminal J2, a resistor R1, a resistor R2, a resistor R3, a capacitor C3 and a resistor R5, wherein a first anode of the bidirectional thyristor SG1 is connected with one end of the resistor R1, the connection terminal J1 and a first AC pin of the AC-DC converter AC-DC1, the other end of the resistor R1 is connected with a first anode of the photoelectric coupler U1, the other end of the resistor R1 is connected with a second anode of the bidirectional thyristor SG1, one end of the resistor R1 and the connection terminal J1 after being connected with the capacitor C1 in series, the other end of the resistor R1 is connected with a control electrode of the bidirectional thyristor SG1 and a second anode of the photoelectric coupler U1, the anode and the cathode of the power supply terminal VCC 1 are respectively connected with a power supply terminal VCC and a resistor R1 to modulate a, a second alternating current pin of the alternating current-direct current converter AC-DC1 is connected with a connecting terminal J1 and a connecting terminal J2, a heater P2 is connected with a direct current pin of the alternating current-direct current converter AC-DC1, and a grounding pin of the alternating current-direct current converter AC-DC1 is grounded; the heating display circuit comprises a nixie tube for displaying rated power percentage, current temperature, preset heat preservation temperature and water boiling time.