CN219756677U

CN219756677U - Six-key middle-end type water heater control device

Info

Publication number: CN219756677U
Application number: CN202320868570.7U
Authority: CN
Inventors: 刘顺涛; 刘学
Original assignee: Shandong Norite Intelligent Technology Co ltd
Current assignee: Shandong Norite Intelligent Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-26
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses a six-key middle-end type water heater control device, which comprises a control box, wherein the control box comprises a box body and a control panel, and the control panel is electrically connected with a main control board in the box body; the method is characterized in that: the main control board is integrated with a water temperature detection circuit, an electric heating control circuit, an AC/DC module circuit, a display driving circuit, an infrared emission receiving circuit, a clock chip control circuit and a buzzer driving circuit; the AC/DC module circuit provides direct current for a singlechip U3 on the main control board; the water temperature detection circuit, the electric heating control circuit, the display driving circuit, the infrared emission receiving circuit, the clock chip control circuit and the buzzer driving circuit are respectively and electrically connected with the singlechip U3; a display screen is arranged on the control panel; the six-key middle-end type water heater control device provided by the utility model has the characteristics of welcome function and low power consumption operation, and can be used for avoiding the aging damage of components caused by long-time lighting of a display screen.

Description

Six-key middle-end type water heater control device

Technical Field

The utility model relates to the technical field of controllers, in particular to a six-key middle-end type water heater control device.

Background

With the improvement of life of people, the water heater has become common equipment for families; water heaters have been developed for many years and different types of products are produced, common: electric water heater, gas water heater, solar water heater, etc.

When the water heater is used, the stored water in the water tank is required to be heated, and the constant temperature operation is carried out after the water is heated to a certain temperature; after the water heater on the market at present enters a constant temperature mode, the control panel of the water heater can be always displayed, so that energy waste can be caused, and the aging and damage of components of the control panel can be aggravated by long-time bright screen display.

In addition, in the actual use process, after the water heater enters a constant temperature mode, the water heater can keep the water in the water tank constant, and the water heater can be heated again until the water temperature reaches the preset temperature after the water temperature is lower than the set value; however, when no one is in home, the water heater in the constant temperature mode can continuously heat, so that on one hand, energy is wasted, and on the other hand, the water heater continuously works under the condition of no one monitoring, so that the risk of faults is increased, and even unexpected risks such as fire disaster can be caused.

Therefore, it is necessary to develop a control device for the water heater, which is used for ensuring the normal operation of the water heater and has the functions of coming people on screen display and the like.

Disclosure of Invention

In view of the foregoing problems of the prior art, an aspect of the present utility model is to provide a six-key middle-end water heater control device, which is used for solving the foregoing problems of the prior art.

The following is the technical proposal of the utility model

In order to achieve the above purpose, the six-key middle-end type water heater control device provided by the utility model comprises a control box, wherein the control box comprises a box body and a control panel, and the control panel is electrically connected with a main control board in the box body; the main control board is integrated with a water temperature detection circuit, an electric heating control circuit, an AC/DC module circuit, a display driving circuit, an infrared emission receiving circuit, a clock chip control circuit and a buzzer driving circuit; the AC/DC module circuit provides direct current for a singlechip U3 on the main control board; the water temperature detection circuit, the electric heating control circuit, the display driving circuit, the infrared emission receiving circuit, the clock chip control circuit and the buzzer driving circuit are respectively and electrically connected with the singlechip U3; a display screen is arranged on the control panel;

the infrared transmitting and receiving circuit comprises an infrared transmitting circuit and an infrared receiving circuit; the infrared emission circuit is connected with the 15 pins of the singlechip; the infrared receiving circuit is connected with 24 pins of the singlechip; the clock chip control circuit comprises a chip U5, wherein the 5 pin, the 6 pin and the 7 pin of the chip U5 are respectively connected with the 16 pin, the 22 pin and the 23 pin of the singlechip U3, and generate a reset signal, an input and output signal and a clock signal.

Further, 6 pins, 9 pins, 10 pins, 11 pins, 13 pins and 14 pins of the singlechip U3 are respectively and electrically connected with keys on the control panel.

Further, the singlechip is electrically connected with the Wi-Fi module, and the Wi-Fi module adopts HLKB35.

Furthermore, the display screen is specifically composed of a nixie tube and a light-emitting diode.

Further, a relay JK1 is connected in series on the electric heating control circuit, a pin of the relay JK1 is connected with a heating rod in a coupling way, the other pin of the relay JK1 is connected with a triode circuit in a coupling way, and the relay is controlled by a singlechip.

Further, the water temperature detection circuit comprises a water temperature sensor CN1, and a sw port of the water temperature detection circuit is electrically connected with the 12 pins of the singlechip U3.

Further, the display driving circuit comprises a display chip U2, wherein the 1 pin, the 2 pin and the 3 pin of the display chip are respectively and electrically connected with the 27 pin, the 26 pin and the 25 pin of the singlechip U3; the display chip U2 is electrically connected with the display screen.

Compared with the prior art, the six-key middle-end type water heater control device provided by the utility model has the following beneficial effects:

the utility model has the welcome function, under the starting-up state, users in a certain range can be perceived through the infrared transmitting and receiving circuit, when the users approach, the infrared transmitting and receiving circuit generates a signal and sends the signal to the singlechip U3, and the singlechip U3 generates an instruction to control the display screen to lighten; when the controller is continuously sensed, the display screen is turned off when no key operation is performed within 1 minute; the utility model has the characteristics of low power consumption, and avoids the aging damage of components caused by long-time lighting of the display screen.

The utility model has the clock chip control circuit, after the constant temperature function is started, the key operation is not performed within the preset time, the welcome function is not triggered, no one is judged in the house, the constant temperature mode is automatically closed, the heating is stopped, the unnecessary accident danger is avoided, and the house safety is ensured.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.

Drawings

FIG. 1 is a schematic view of a control panel according to the present utility model;

FIG. 2 is a schematic diagram of the circuit structure in the main control board of the present utility model;

FIG. 3 is a schematic diagram of the circuit structure of the AC/DC module of the present utility model;

FIG. 4 is a schematic diagram of the structure of a single-chip microcomputer U3;

FIG. 5 is a schematic diagram of the circuit structure of the infrared receiving circuit of the present utility model;

FIG. 6 is a schematic diagram of the circuit configuration of the infrared emission circuit of the present utility model;

FIG. 7 is a schematic diagram of a clock chip control circuit according to the present utility model;

FIG. 8 is a schematic diagram showing a driving circuit structure according to the present utility model;

FIG. 9 is a schematic diagram of a buzzer driving circuit according to the present utility model;

FIG. 10 is a schematic diagram of a water temperature detection circuit according to the present utility model;

FIG. 11 is a schematic diagram of an electrical heating control circuit according to the present utility model;

FIG. 12 is a schematic diagram of a circuit configuration of a display screen according to the present utility model;

fig. 13 is a schematic diagram of a Wi-Fi module structure of the present utility model.

The main reference numerals:

1. a control panel; 2. a main control board; 21. an AC/DC module circuit; 22. a water temperature detection circuit; 23. an electric heating control circuit; 24. a display driving circuit; 25. an infrared emission receiving circuit; 26. a clock chip control circuit; 27. a buzzer driving circuit; 28. Wi-Fi module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "includes" and the like in this disclosure is intended to cover an element or article listed after that term and equivalents thereof without precluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed description of known functions and known components.

Referring to fig. 1-13, a six-key middle-end type water heater control device comprises a control box, wherein the control box comprises a box body and a control panel 1, and the box body is not shown in the drawings; the control panel 1 is electrically connected with the main control panel 2 in the box body; the main control board 2 is integrated with a water temperature detection circuit 22, an electric heating control circuit 23, an AC/DC module circuit 21, a display driving circuit 24, an infrared emission receiving circuit 25, a clock chip control circuit 26 and a buzzer driving circuit 27; the AC/DC module circuit 1 provides direct current for a singlechip U3 on a main control board 2; the water temperature detection circuit 22, the electric heating control circuit 23, the display driving circuit 24, the infrared emission receiving circuit 25, the clock chip control circuit 26 and the buzzer driving circuit 27 are respectively and electrically connected with the singlechip U3; the control panel 1 is provided with a display screen.

Wherein, singlechip U3 adopts SC92F8463BM28U.

The infrared transmitting and receiving circuit 25 comprises an infrared transmitting circuit and an infrared receiving circuit; the infrared emission circuit is connected with the 15 pins of the singlechip; the infrared receiving circuit is connected with 24 pins of the singlechip; the infrared heating circuit comprises an infrared emission tube, wherein the anode of the infrared emission tube is connected with a resistor R48 and a resistor R49 which are connected in parallel in series and then connected with +5V voltage; the cathode of the infrared emission tube is connected with the C collector of the triode Q2, and the B base level of the triode Q2 is connected with the resistor R1 in series and then connected with the 15 pin of the singlechip U3; the E emitter of the triode Q2 is grounded, and the B base stage of the triode Q2 is connected with a resistor R47 in series and then grounded.

The infrared receiving circuit comprises an infrared receiving head U4, wherein the VCC end of the infrared receiving head U4 is connected with a resistor R51 in series and then connected with the 24 pins of the singlechip U3;

the infrared receiving circuit is used for detecting objects within a certain range, for example, 0.5 meter to 1 meter is set in the embodiment, when a user is about 0.5 meter to 1 meter away from the device in a starting state, the infrared receiving circuit receives an induction signal generated by the infrared emitting circuit through the infrared receiving head U4 and sends the signal to the singlechip U3, and the singlechip U3 controls the display driving circuit to enable the display screen to be lightened; when the distance between the user and the water tank is greater than 1 meter, the infrared transmitting and receiving circuit does not generate induction signals, the time is set by the clock chip control circuit, for example, 1 minute, the user enters a screen-off state when no key operation is performed within 1 minute, and at the moment, the singlechip U3 controls the display driving circuit to enable the display screen to be turned on or off; when the infrared receiving circuit detects that the inductor is moved away and then generates an induction signal again, the display screen is lightened again.

The clock chip control 26 circuit comprises a chip U5, wherein a pin 5 of the chip U5 is connected with a resistor R55 in series and then connected with a pin 16 of the singlechip U3, and the pin 5 of the chip U5 generates a reset signal; the 6 pin of the chip U5 is connected with the resistor R54 in series and then connected with the 22 pin of the singlechip U3, and the 6 pin of the chip U5 generates an input and output signal; the 7 pin of the chip U5 is connected with the resistor R53 in series and then connected with the 23 pin of the singlechip U3, and the 7 pin of the chip U5 generates a clock signal; and the 2 pin and the 3 pin of the chip U5 are connected in parallel to the crystal oscillator X1.

The 6 pins of the singlechip U3 are electrically connected with the key K3, the 9 pins are electrically connected with the key K6, the 10 pins are electrically connected with the key K5, the 11 pins are electrically connected with the key K4, the 13 pins are electrically connected with the key K2, and the 14 pins are electrically connected with the key K1.

The singlechip is electrically connected with the Wi-Fi module 28, the Wi-Fi module 28 adopts an HLKB35, a Wi-Fi module circuit belongs to the prior art, and the embodiment is not repeated; the RST port, ESO port, TXD port and RXD port of the Wi-Fi module 28 are respectively and electrically connected with corresponding pins of the singlechip U3.

The electric heating control circuit 26 is connected with a relay JK1 in series, a pin of the relay JK1 is connected with a heating rod in a coupling way, the other pin of the relay JK1 is connected with a triode circuit in a coupling way, and the relay is controlled by the singlechip.

The water temperature detection circuit 22 comprises a water temperature sensor CN1, and a SW port of the water temperature detection circuit is electrically connected with the 12 pin of the singlechip U3; the water temperature sensor CN1 is connected in parallel with the polar capacitor E5 and then connected in series with the R11 to be connected with the 12 pin of the singlechip U3; the water temperature sensor CN1 is also connected in parallel with a capacitor C6.

The display driving circuit 24 comprises a display chip U2, wherein the display chip U2 adopts TM1668, and the 1 pin, the 2 pin and the 3 pin of the display chip are respectively and electrically connected with the 27 pin, the 26 pin and the 25 pin of the singlechip U3; the display chip U2 is electrically connected with the display screen; the display screen is specifically composed of a nixie tube and a light-emitting diode.

The six-key middle-end type water heater control device provided by the utility model uses 220V/50Hz power supply, and the controller consumes power: <3W; temperature measurement precision: (+ -1 ℃; water temperature measurement range: 0-90 ℃; temperature control precision: (+ -1 ℃; controllable electric heating power: AC220V, p <2000W.

Further in connection with fig. 1, the following basic functions are provided:

and (5) power-on self-checking:

the controller is electrified, the display screen displays for 3 seconds, and after 3 seconds, the controller recovers the state before the last power failure.

Instant heating function:

the controller is started, and the instant heating function is selected by pressing the heating key K2. The display screen is lit up as a hot symbol. When the actual temperature is less than the set temperature, the controller automatically starts heating, the flame sign is lighted, when the actual temperature is more than or equal to the set temperature, the heating is stopped, the flame and the instant heating sign are extinguished, the system exits the instant heating mode, and when the instant heating mode is started, a user can manually stop the instant heating function through a heating key K2.

Constant temperature function:

starting the controller, and pressing a heating key K2 to select a constant temperature function; the display screen is lighted up by a constant-temperature symbol; when the actual temperature is less than the set temperature and is minus 5 ℃, the controller automatically starts heating, the flame sign is lighted, when the actual temperature is more than or equal to the set temperature, the heating is stopped, the flame sign is extinguished, the water temperature is reduced, when the actual temperature is less than the set temperature and is minus 5 ℃, the controller automatically starts heating again, the flame sign is lighted, and after the constant temperature mode is started, a user can manually stop the constant temperature function through a heating key K2; after the constant temperature function is started, key operation is not performed within 2 days, the welcome function is not triggered, no person in the house is judged, and the constant temperature mode is automatically closed and heating is stopped.

Welcome function:

in the starting-up state, when the user is about 0.5 to 1 meter away from the water tank, the display screen is lightened; when the distance between the user and the water tank is greater than 1 meter, the display screen is extinguished. When the controller continuously senses, the controller enters a screen-off state when no key operation is performed within 1 minute, and the display screen is turned off; the inductor is sensed again after being removed, and the display screen is lightened again.

The device has the fault protection function:

1. dry burning failure: when the controller operates, when the temperature of the water tank is detected to continuously rise and the temperature rise is more than 25 degrees within 30 seconds, the system judges that the system is in dry burning fault, the display screen displays E6, the buzzer sounds 6 to remind a user of the system fault, and after the system is powered on again, the system is recovered and judged again.

2. When the overtemperature fault controller operates, when the temperature of the water tank is detected to be more than 90 ℃, the system judges that the water tank is in high-temperature fault, the display screen displays E5, the buzzer sounds 6 to remind a user of the system fault, and when the temperature is less than or equal to 85 ℃, the system is restored to a normal standby state.

3. Failure of water temperature sensor

When the controller operates, the system judges that the water temperature sensor is in fault when detecting abnormality (open circuit or short circuit) of the water tank temperature sensor, and the buzzer sounds 6 to remind a user of the system fault. And automatically recovering the standby state after the fault is removed.

4. Antifreezing protection of the water tank: when the controller operates, the system automatically starts an anti-freezing mode when the temperature of the water tank is detected to be less than or equal to 4 ℃, the electric heating is started, and when the temperature of the water tank is detected to be more than or equal to 8 ℃, the system automatically stops heating and exits from anti-freezing protection.

5. System memory function: when the controller operates and the power-off condition suddenly occurs, the system automatically saves various data set by a user, sets temperature, sets timing time, and sets an electric heating mode and a power-on and power-off state. And after the power is electrified again, the state before the last power failure is automatically recovered.

6. Low power operation: after the controller is started, the key operation is carried out or the welcome function is triggered, the display screen is highlighted for 20 seconds, no operation is carried out for 20 seconds, the controller enters a low power consumption mode, the brightness of the display screen is reduced, no operation is carried out for 1 minute, and the display screen is stopped. After key operation is performed again or the welcome function is triggered, the display screen is highlighted again.

The electrical components appearing herein are all connected with an external master controller and 220V mains supply, and the master controller may be a conventionally known device for controlling a computer or the like.

Those skilled in the art will appreciate that other similar connections may implement the present utility model. Such as welding, bonding, or bolting.

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present utility model by those skilled in the art, which modifications and equivalents should also be considered as falling within the scope of the present utility model.

Claims

1. The six-key middle-end type water heater control device comprises a control box, wherein the control box comprises a box body and a control panel, and the control panel is electrically connected with a main control board in the box body; the method is characterized in that: the main control board is integrated with a water temperature detection circuit, an electric heating control circuit, an AC/DC module circuit, a display driving circuit, an infrared emission receiving circuit, a clock chip control circuit and a buzzer driving circuit; the AC/DC module circuit provides direct current for a singlechip U3 on the main control board; the water temperature detection circuit, the electric heating control circuit, the display driving circuit, the infrared emission receiving circuit, the clock chip control circuit and the buzzer driving circuit are respectively and electrically connected with the singlechip U3; a display screen is arranged on the control panel;

the infrared transmitting and receiving circuit comprises an infrared transmitting circuit and an infrared receiving circuit; the infrared emission circuit is connected with the 15 pins of the singlechip; the infrared receiving circuit is connected with 24 pins of the singlechip;

the clock chip control circuit comprises a chip U5, wherein the 5 pin, the 6 pin and the 7 pin of the chip U5 are respectively connected with the 16 pin, the 22 pin and the 23 pin of the singlechip U3, and generate a reset signal, an input and output signal and a clock signal.

2. The six-key middle-end type water heater control device according to claim 1, wherein the 6-pin, the 9-pin, the 10-pin, the 11-pin, the 13-pin and the 14-pin of the single chip microcomputer U3 are respectively and electrically connected with keys on a control panel.

3. The six-key middle-end type water heater control device according to claim 1, wherein the single-chip microcomputer is electrically connected with a Wi-Fi module, and the Wi-Fi module adopts an HLKB35.

4. A six key middle-end water heater control device according to any one of claims 1 or 3, wherein the display screen is specifically composed of a nixie tube and a light emitting diode.

5. The six-key middle-end type water heater control device according to claim 1, wherein the electric heating control circuit is connected with a relay JK1 in series, a pin of the relay JK1 is connected with a heating rod in a coupling mode, the other pin of the relay JK1 is connected with a triode circuit in a coupling mode, and the relay is controlled by a single chip microcomputer.

6. The six-key middle-end type water heater control device according to claim 1, wherein the water temperature detection circuit comprises a water temperature sensor CN1, and a sw port of the water temperature detection circuit is electrically connected with a 12-pin of the single-chip microcomputer U3.

7. The six-key middle-end water heater control device according to claim 1, wherein the display driving circuit comprises a display chip U2, and the 1 pin, the 2 pin and the 3 pin of the display chip are respectively and electrically connected with the 27 pin, the 26 pin and the 25 pin of the singlechip U3; the display chip U2 is electrically connected with the display screen.