CN111520923A - Electronic adjustable constant-temperature water outlet solar water heater - Google Patents

Abstract

The invention relates to an electronic adjustable constant-temperature water outlet solar water heater, and belongs to the field of civil solar water heaters. The water outlet hot water pipe one end UNICOM storage water tank, the other end is through mixing water ball and intake cold water pipe and the UNICOM of play warm water pipe, first temperature sensing temperature resistor, second temperature sensing temperature resistor, third temperature sensing temperature resistor installs respectively at the cold water pipe of intaking, go out on hot water pipe and the warm water pipe of play water, cold water intake electric regulating valve installs on the cold water pipe of intaking, hot water play water electric regulating valve installs on the hot water pipe of going out, the ball valve that drains installs on the warm water pipe of play water, water yield sensor installs by the storage water tank, the controller respectively with three temperature sensor, water yield sensor, cold water intake electric regulating valve and hot water play water electric regulating valve are connected. The invention has the advantages of rapid and accurate adjustment of the outlet water temperature, uniform water distribution due to the design of the water mixing ball, removal of the shower mixing ball valve, low price and no contact with hot water during use, thereby being suitable for people of all ages and having no scalding risk.

Description

An electronically adjustable constant temperature effluent solar water heater

technical field

The invention relates to an electronically adjustable constant temperature effluent solar water heater, which belongs to the field of civil solar water heaters.

Background technique

As a green energy-saving energy, solar energy is most widely used in civil solar water heaters, and has common applications in many rural and urban multi-storey buildings.

At present, the technical solutions adopted by solar water heaters are: 1) a water pipe is used as a cold water supply pipe and an outlet hot water pipe, 2) a solenoid valve is used for automatic water supply, 3) the controller can display the hot water temperature of the water heater, Water storage capacity, 4) The shower has a complex water mixing valve mechanical structure. Compared with the previous solution, this solution saves a separate sewer pipe and also has a semi-intelligent automatic water supply function. , The heat loss is large, which increases the safety hazard. 2) When using, the high-temperature hot water of the water heater comes out first, which is prone to scalding danger and is not suitable for the elderly and children to use alone. 3) The water temperature adjustment time is long and difficult. , the accuracy is not enough, 4) waste of water is too much, 5) the matching shower shower is expensive.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose an electronically adjustable constant temperature effluent solar water heater to overcome the following shortcomings of traditional water heaters: 1) the hot water pipeline is too long during use, the heat loss is large, and the safety hazard is increased; 2) during use, the first The high-temperature hot water coming out of the water heater is prone to scalding danger and is not suitable for the elderly and children to use alone. 3) The water temperature adjustment time is long, difficult, and the accuracy is not enough, 4) Too much water wasted, 5) Matching bath flowers Sprinkles are expensive.

An electronically adjustable constant temperature effluent solar water heater includes a water storage tank, a controller, a first thermal temperature measuring resistor, a second thermal thermal measuring resistor, a third thermal thermal measuring resistor, a water volume sensor, an inlet and cold water pipe, and an outlet water heater. Water pipe, hot water outlet pipe, cold water inlet electric regulating valve, hot water outlet electric regulating valve, water mixing ball and water discharging ball valve. The water inlet and cold water pipes are communicated with the outlet water temperature water pipes, and the first thermal temperature measuring resistor, the second thermal temperature measuring resistor and the third thermal temperature measuring resistor are respectively installed in the water inlet cold water pipe, the outlet hot water pipe and the outlet water temperature pipe. water pipe, the cold water inlet electric regulating valve is installed on the water inlet cold water pipe, the hot water outlet electric regulating valve is installed on the outlet hot water pipe, the water discharge ball valve is installed on the outlet warm water pipe, The water quantity sensor is installed beside the water storage tank, and the controller is respectively connected with the first thermistor, the second thermistor, the third thermistor, the water sensor, and the cold water inlet. The electric regulating valve is connected with the hot water outlet electric regulating valve.

Further, the water storage tank is used to store the hot water heated by the water heater;

The controller is used to set the outlet water temperature according to the hot water temperature information and the cold water temperature information, and respectively open the cold water inlet electric control valve and the hot water outlet electric control valve to a certain angle according to the degree of internal algorithm, and Receive the warm water temperature information feedback sent by the third thermal temperature measuring resistor, and perform closed-loop control to obtain the outlet water temperature;

the first thermistor temperature measuring resistor is used to generate and send cold water temperature information to the controller;

the second thermistor temperature measuring resistor is used to generate and send hot water temperature information to the controller;

the third thermistor, for generating and sending warm water temperature information to the controller;

the water quantity sensor for measuring the hot water level of the water storage tank and sending the hot water level information to the controller;

the water inlet cold water pipe is used for introducing cold water to the water mixing valve;

the water outlet hot water pipe is used to lead out the hot water in the water storage tank to the water mixing valve;

The water outlet warm water pipe is used to lead warm water from the water mixing valve;

The cold water inlet electric regulating valve is used to adjust the cold water distribution amount in the cold water inlet pipe under the command of the controller;

The hot water outlet electric regulating valve is used to adjust the hot water distribution amount in the outlet hot water pipe under the command of the controller;

The water mixing ball is used to mix cold water and hot water to warm water;

The water discharge ball valve is used to control the flow rate of warm water in the water outlet warm water pipe.

Further, the cold water inlet electric regulating valve and the hot water outlet electric regulating valve are synchronously adjusted, and the sum of the opening degrees is 100%.

Further, the controller includes a switching power supply, an A/D converter, a single-chip microcomputer, a driving circuit, a digital tube display, a display circuit, four setting button switches and an IO line row, and the switching power supply is respectively connected to the A/D. A converter, a single-chip microcomputer, a driving circuit and a display circuit, the four setting key switches are connected with the single-chip microcomputer, the single-chip microcomputer is connected with the driving circuit and the display circuit at the same time, the driving circuit is connected with the IO line row, and the IO line row is connected with The A/D converter is connected, the A/D converter is connected with the single-chip microcomputer, and the display circuit is connected with the digital tube display.

Further, the switching power supply is used to rectify the input AC220V to DC330V, and supply power for the A/D converter, the single-chip microcomputer, the drive circuit and the display circuit;

The switching power supply is also used to transform DC300V, and generate one +5V circuit, two +12V circuits and one -12V circuit;

The A/D converter is used to accept the analog signals of the first thermistor, the second thermistor, the third thermistor and the water sensor, and convert them into digital signals and send them to the the single-chip microcomputer;

The single-chip microcomputer is used to send a control signal to the driving circuit according to a preset program according to the digital signal, and simultaneously output a display signal to the display circuit;

The driving circuit is used to amplify the control signal and drive the cold water inlet electric regulating valve and the hot water outlet electric regulating valve to run in both positive and negative directions;

The display circuit is used to receive the display signal and drive the digital tube display to display;

The digital tube display is used to display water level, hot water temperature and warm water temperature;

the four setting key switches are used for sending setting signals to the single chip microcomputer for setting the water heater;

The IO line row is used to connect the first thermal resistance, the second thermal resistance, the third thermal resistance, the water sensor, the cold water inlet electric regulating valve and the hot water outlet electric regulation The drive circuit sends the amplified control signal through the IO line, and the A/D converter receives the analog signal through the IO line.

Further, the switching power supply includes a power supply circuit, an absorption loop, a feedback circuit and a self-power supply circuit.

Further, the settings of the water heater include water outlet temperature settings, clock settings and water supply time settings.

Further, a shower nozzle is also installed at the end of the water outlet warm water pipe.

The main advantages of the present invention are:

1) The water temperature adjustment is fast and accurate.

2) Less waste water is discharged and water resources are saved.

3) When the water temperature of the water storage tank is not high, no water can be entered, so as to avoid the water temperature being too low to be used. The hot water utilization rate of the water storage tank is 100%.

4) The hot water pipeline is short, the pipeline life is prolonged, and the safety is high.

5) The water mixing ball is designed to distribute water evenly.

6) Removing the shower mixing ball valve, the price drops.

7) There is no contact with hot water during use, so it is suitable for all ages, and there is no risk of scalding.

Description of drawings

Accompanying drawing 1 is the control principle diagram of adjustable constant temperature effluent solar water heater;

Accompanying drawing 2 is a digital tube display display panel diagram;

3 is a schematic diagram of the electronic adjustable constant temperature effluent solar water heater controller of the present invention;

Accompanying drawing 4 is the circuit design diagram of switching power supply;

Figure 5 is a schematic diagram of the A/D converter and the peripheral circuit of the microcontroller.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An electronically adjustable constant temperature effluent solar water heater includes a water storage tank, a controller, a first thermal temperature measuring resistor, a second thermal thermal measuring resistor, a third thermal thermal measuring resistor, a water volume sensor, an inlet and cold water pipe, and an outlet water heater. Water pipe, water outlet warm water pipe, cold water inlet electric regulating valve, hot water outlet electric regulating valve, water mixing ball and water discharge ball valve, one end of the water outlet hot water pipe is connected with the water storage tank, and the other end is connected with the water inlet cold water pipe and the water outlet warm water pipe through the water mixing ball , the first thermal resistance, the second thermal resistance, and the third thermal resistance are respectively installed in the inlet cold water pipe, the outlet hot water pipe and the outlet temperature water pipe, and the cold water inlet electric regulating valve is installed in the inlet cooling water pipe. On the water pipe, the hot water outlet electric regulating valve is installed on the water outlet hot water pipe, the water discharge ball valve is installed on the outlet water temperature water pipe, the water volume sensor is installed next to the water storage tank, and the controller is respectively connected with the first thermal resistance and the second thermal resistance. The temperature measuring resistance, the third thermal temperature measuring resistance, the water quantity sensor, the cold water inlet electric regulating valve and the hot water outlet electric regulating valve are connected.

In a preferred embodiment of this part, a water storage tank is used to store the hot water heated by the water heater;

The controller is used to set the outlet water temperature according to the hot water temperature information and the cold water temperature information, and open the cold water inlet electric control valve and the hot water outlet electric control valve to a certain angle according to the internal algorithm, and receive the third heat. The warm water temperature information sent by the sensitive temperature measuring resistor is fed back, and closed-loop control is carried out to obtain the water temperature;

The first thermal temperature measuring resistor is used to generate and send cold water temperature information to the controller;

The second thermistor is used to generate and send hot water temperature information to the controller;

The third thermistor is used to generate and send warm water temperature information to the controller;

The water sensor is used to measure the hot water level of the water storage tank and send the hot water level information to the controller;

Inlet cold water pipe, used to introduce cold water to the mixing valve;

The outlet hot water pipe is used to lead the hot water in the water storage tank to the mixing valve;

Outlet warm water pipe, used to lead warm water from the mixing valve;

The cold water inlet electric regulating valve is used to adjust the cold water distribution in the inlet cold water pipe under the command of the controller;

The hot water outlet electric regulating valve is used to adjust the hot water distribution in the outlet hot water pipe under the command of the controller;

water mixing ball for mixing cold and hot water to lukewarm water;

The water discharge ball valve is used to control the flow of warm water in the outlet water temperature pipe.

In the preferred embodiment of this part, the cold water inlet electric regulating valve and the hot water outlet electric regulating valve are synchronously adjusted, and the sum of the opening degrees is 100%.

Specifically, as shown in FIG. 1 , thermal temperature measuring resistors are respectively installed on the outlet hot water pipe, the inlet cold water pipe and the outlet warm water pipe; Valve and hot water outlet electric regulating valve are used to adjust the distribution of hot and cold water; the water mixing ball installed at the junction of the cold and hot water pipes can mix the hot and cold water more evenly; the water volume sensor adopts an adjustable potentiometer to measure the water storage tank Hot water level; Cancel the traditional expensive mixing valve shower with complex mechanical structure but inaccurate and reliable operation; the controller accepts the temperature information of hot and cold water, according to the set water temperature, and according to the degree of internal algorithm to open the hot and cold water respectively When the valve reaches a certain angle, the closed-loop control is carried out by the feedback of the warm water temperature sensor to obtain the accurate outlet water temperature.

In the preferred embodiment of this part, the controller includes a switching power supply, an A/D converter, a single-chip microcomputer, a drive circuit, a digital tube display, a display circuit, four setting button switches and an IO line row, and the switching power supply is respectively connected to the A/D converter The four setting key switches are connected to the microcontroller, the microcontroller is connected to the drive circuit and the display circuit at the same time, the drive circuit is connected to the IO line, the IO line is connected to the A/D converter, the A/D The D converter is connected with the single-chip microcomputer, and the display circuit is connected with the digital tube display.

Specifically, as shown in Figure 2, the water supply time button on the panel is recommended to be set at a certain time every morning, but whether the actual water supply can actually be used depends on the amount of water in the water heater and the temperature of the hot water; the clock setting button is used for It is used to set the Beijing time to provide a standard for the water supply time; the water outlet temperature button is used to adjust according to the weather, personal preference and the length of the warm water pipeline, the maximum temperature does not exceed 52 degrees, and generally does not need to be adjusted after setting; It is used in the water during the initial installation; the panel also has the display function of warm water outlet temperature, hot water temperature, and hot water volume; the controller is powered by AC220V, and its rear wiring is used for various temperature and water volume information collection and two electric Water valve control.

Specifically, FIG. 3 is a schematic diagram of the electronic control of the controller of the present invention. The AC220V input generates relevant DC low voltage through the switching power supply to supply power for subsequent modules, and the A/D converter accepts the voltage signals of three temperature sensors and one water sensor, and It is converted into a mathematical signal to the single-chip microcomputer. The single-chip microcomputer sends a signal according to the program requirements. After being amplified by the driving circuit, it drives the hot and cold water valve motor to run in both forward and reverse directions to adjust the amount of cold and hot water. The display circuit accepts the single-chip microcomputer signal to use Drive the digital tube display to display the water level, hot water temperature and warm water temperature. In this embodiment, the digital tube display is preferably an LED light, and the four setting button switches send signals to the single-chip microcomputer, which can set the water temperature, clock setting, and water supply. time settings, etc.

In the preferred embodiment of this part, the switching power supply is used to rectify the input AC220V to DC330V, and supply power to the A/D converter, the single-chip microcomputer, the drive circuit and the display circuit;

The switching power supply, as shown in Figure 4, is also used to transform DC300V, and generate one +5V circuit, two +12V circuits and one -12V circuit, of which one +12V circuit is used for motor power supply, and the other + The 12V circuit and the -12V circuit are used as the dual power supply of the follow-up circuit comparator and operational amplifier circuit. The switching power supply circuit itself consists of a power supply circuit, an absorption circuit, a feedback circuit, and a self-power supply circuit;

The A/D converter is used to receive the analog signals of three temperature sensors and one water sensor in the solar water heater, and convert them into digital signals and send them to the single-chip microcomputer;

The single-chip microcomputer is used to send a control signal to the driving circuit according to a preset program according to the digital signal, and simultaneously output a display signal to the display circuit;

The drive circuit is used to amplify the control signal and drive the cold and hot water valve motors in the solar water heater to run in both positive and negative directions;

The display circuit is used to receive the display signal and drive the digital tube display to display;

The digital tube display is used to display water level, hot water temperature and warm water temperature;

the four setting key switches are used for sending setting signals to the single chip microcomputer for setting the water heater;

The IO wire row is used to connect the three temperature sensors, a water quantity sensor and the hot and cold water valve motor in the solar water heater, the drive circuit sends the amplified control signal through the IO wire row, the The A/D converter receives the analog signal through the IO line.

Specifically, Figure 5 is a schematic diagram of AD conversion and the peripheral circuit of the single-chip microcomputer. The ADC0809 chip is a four-channel analog A/D converter chip, and the 80S51 is a single-chip microcomputer. The two can be used together to collect the voltages of three temperature sensors and one water sensor. The signal is converted into a mathematical signal to the single chip microcomputer. The single chip computer drives the four field effect tubes Q1, Q2, Q3 and Q4 through the internal program calculation, and finally realizes the water volume adjustment function of the cold and hot water regulating valve. The water level display and hot water temperature display are realized by driving multiple LEDs with a single chip microcomputer. Some other auxiliary circuits are omitted here.

In the preferred embodiment of this section, the switching power supply includes a power supply circuit, a absorption circuit, a feedback circuit and a self-power supply circuit.

In the preferred embodiment of this part, the settings of the water heater include water outlet temperature settings, clock settings and water supply time settings.

In the preferred embodiment of this part, a shower head is also installed at the end of the outlet warm water pipe.

The control strategy of the water heater of the present invention is as follows: 1) The cold water inlet electric regulating valve and the hot water outlet electric regulating valve are synchronously adjusted, and the sum of the opening degrees is 100% to ensure the water output from the full pipe; 2) The final shower water output is determined by Outlet ball valve control, 3) When the hot water temperature of the water storage tank is lower than 60 degrees, the automatic water supply cannot be started to prevent the water supply in rainy days, reducing the hot water temperature and making it unsuitable for use, 4) When the hot water temperature of the water storage tank reaches 80 degrees Start automatic water supply to minimize the time at high temperature.

Claims (8)

1. An electronic adjustable constant-temperature water outlet solar water heater is characterized by comprising a water storage tank, a controller, a first thermosensitive temperature measuring resistor, a second thermosensitive temperature measuring resistor, a third thermosensitive temperature measuring resistor, a water quantity sensor, a water inlet cold water pipe, a water outlet hot water pipe, a water outlet warm water pipe, a cold water inlet electric regulating valve, a hot water outlet electric regulating valve, a water mixing ball and a water discharge ball valve, wherein one end of the water outlet hot water pipe is communicated with the water storage tank, the other end of the water outlet hot water pipe is communicated with the water inlet cold water pipe and the water outlet warm water pipe through the water mixing ball, the first thermosensitive temperature measuring resistor, the second thermosensitive temperature measuring resistor and the third thermosensitive temperature measuring resistor are respectively arranged on the water inlet cold water pipe, the water outlet hot water pipe and the water outlet warm water pipe, the cold water inlet electric regulating valve is arranged on the water inlet cold water pipe, the water outlet electric, the water outlet ball valve is installed on the water outlet warm water pipe, the water quantity sensor is installed beside the water storage tank, and the controller is respectively connected with the first thermosensitive temperature measuring resistor, the second thermosensitive temperature measuring resistor, the third thermosensitive temperature measuring resistor, the water quantity sensor, the cold water inlet electric control valve and the hot water outlet electric control valve.

2. The electronic adjustable constant-temperature water outlet solar water heater according to claim 1,

the water storage tank is used for storing hot water heated by the water heater;

the controller is used for respectively opening the cold water inlet electric regulating valve and the hot water outlet electric regulating valve to a certain angle according to the set outlet water temperature and the internal algorithm of the degree according to the hot water temperature information and the cold water temperature information, receiving warm water temperature information feedback sent by the third thermistor, and performing closed-loop control to obtain the outlet water temperature;

the first thermosensitive temperature measuring resistor is used for generating and sending cold water temperature information to the controller;

the second thermosensitive temperature measuring resistor is used for generating and sending hot water temperature information to the controller;

the third thermistor is used for generating and sending temperature and water temperature information to the controller;

the water quantity sensor is used for measuring the hot water level of the water storage tank and sending the hot water level information to the controller;

the water inlet cold water pipe is used for introducing cold water to the water mixing valve;

the water outlet hot water pipe is used for leading hot water in the water storage tank to the water mixing valve;

the water outlet warm water pipe is used for leading out warm water from the water mixing valve;

the cold water inlet electric regulating valve is used for regulating the cold water distribution amount in the water inlet cold water pipe under the command of the controller;

the hot water outlet electric regulating valve is used for regulating the hot water distribution amount in the outlet hot water pipe under the command of the controller;

the water mixing ball is used for mixing cold water and hot water to warm water;

and the water discharging ball valve is used for controlling the flow of the warm water in the water outlet warm water pipe.

3. The electronically adjustable constant temperature outlet solar water heater according to claim 2, wherein the cold water inlet electric regulating valve and the hot water outlet electric regulating valve are synchronously adjusted to a sum of 100%.

4. The electronic adjustable constant-temperature water outlet solar water heater according to claim 2, wherein the controller comprises a switching power supply, an A/D converter, a single chip microcomputer, a driving circuit, a nixie tube display, a display circuit, four set key switches and an IO line row, the switching power supply is respectively connected with the A/D converter, the single chip microcomputer, the driving circuit and the display circuit, the four set key switches are connected with the single chip microcomputer, the single chip microcomputer is simultaneously connected with the driving circuit and the display circuit, the driving circuit is connected with the IO line row, the IO line row is connected with the A/D converter, the A/D converter is connected with the single chip microcomputer, and the display circuit is connected with the nixie tube display.

5. The controller of an electronically adjustable constant temperature outlet water solar water heater according to claim 4,

the switching power supply is used for rectifying the input AC220V into DC330V and supplying power to the A/D converter, the singlechip, the drive circuit and the display circuit;

the switching power supply is also used for transforming DC300V and generating a +5V circuit, two +12V circuits and a-12V circuit;

the A/D converter is used for receiving analog signals of the first thermosensitive temperature measuring resistor, the second thermosensitive temperature measuring resistor, the third thermosensitive temperature measuring resistor and the water quantity sensor, converting the analog signals into digital signals and sending the digital signals to the singlechip;

the singlechip is used for sending a control signal to the drive circuit according to the digital signal and a preset program and outputting a display signal to the display circuit;

the driving circuit is used for amplifying the control signal and driving the cold water inlet electric regulating valve and the hot water outlet electric regulating valve to run in the positive and negative directions;

the display circuit is used for receiving the display signal and driving the nixie tube display to display;

the nixie tube display is used for displaying the water level, the hot water temperature and the warm water temperature;

the four setting key switches are used for sending setting signals to the single chip microcomputer so as to set the water heater;

the IO line bank is used for connecting the first thermosensitive temperature measuring resistor, the second thermosensitive temperature measuring resistor, the third thermosensitive temperature measuring resistor, the water quantity sensor, the cold water inlet electric control valve and the hot water outlet electric control valve, the driving circuit sends the amplified control signal through the IO line bank, and the A/D converter receives the analog signal through the IO line bank.

6. The electronically adjustable constant temperature outlet water solar water heater controller as claimed in claim 5, wherein the switching power supply comprises a power supply circuit, an absorption loop, a feedback circuit and a self-powered circuit.

7. The electronically adjustable constant temperature outlet water solar water heater controller as claimed in claim 5, wherein the water heater settings include outlet water temperature setting, clock setting and water supply time setting.

8. The controller of an electronic adjustable constant-temperature water outlet solar water heater as claimed in claim 2, wherein the tail end of the water outlet warm water pipe is further provided with a shower nozzle.

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