CN202013027U - Water temperature and level control system of a solar water heater - Google Patents

Abstract

The utility model relates to a water temperature and water level control system of a solar water heater, which is used for controlling the water temperature and water level of the solar water heater. The water temperature and water level control system of the utility model is composed of a water temperature and water level module and its driving circuit, wherein the water temperature and water level module includes three modules of water temperature and water level display, water quality detection and driving circuit, and the water temperature and water level driving circuit consists of a 555 timer, three fixed Value capacitor, a rechargeable capacitor, three resistors, and two diodes are connected. The beneficial effects of the utility model are: the water temperature and water level control system improves the intelligence of the solar water heater, and makes the operation more intuitive and convenient under the premise of ensuring practical safety and reliability.

Description

Water temperature and water level control system for a solar water heater

technical field

The utility model relates to a water temperature and water level control system, in particular to a water temperature and water level control system for a solar water heater.

Background technique

Solar water heaters are energy-saving and pollution-free green products. In recent years, promotion and popularization have been rapid. Although some of the solar water heaters currently produced are equipped with water temperature and water level measurement and control devices, the following problems generally exist: 1) The DC water medium electric contact type water level sensor is used. Due to the electrolytic effect, the electrodes are easily corroded, resulting in poor contact and low reliability. Short service life, 2) Most of the existing products have only 3-4 levels of water level classification, and the resolution is 80-100mm, which cannot meet the needs of users, and the cost is relatively high; 3) Most of the existing products are not highly intelligent, The user interface is not friendly. Even with the auxiliary heating function, the heating time cannot be controlled and overheating occurs, which wastes a lot of power.

Utility model content

In order to overcome the deficiencies of the above technologies, the utility model provides a water temperature and water level control system with strong reliability and safety and a high degree of intelligence.

The utility model is achieved through the following measures:

A water temperature and water level control system for a solar water heater of the utility model is composed of a water temperature and water level module and a driving circuit thereof, wherein the water temperature and water level module includes three modules of water temperature and water level display, water quality detection and a driving circuit, and is characterized in that the water temperature and water level drive The circuit is composed of a 555 timer NE555, capacitor 1, capacitor 2 and capacitor 3, a chargeable capacitor, resistor 1, resistor 2 and resistor 3, diode 1 and diode 2 are connected:

Port No. 1 of the 555 timer is directly grounded;

The No. 2 port of the 555 timer is connected to the N pole of the diode, and is directly grounded after being connected in series with the capacitor 1;

The No. 3 port of the 555 timer is connected in series with the capacitor 3, and is directly grounded after being connected in series with the resistor 3;

Port No. 4 of the 555 timer is connected in series with the resistor 1, the resistor 2 and the diode 2, and connected to the upper end of the capacitor 1, wherein the lower end of the resistor 2 is connected to the diode 2 connected to the N pole of the diode 2, the P pole of the diode 2 is connected to the upper end of the capacitor 1, and the No. 4 port of the 555 timer is connected to the upper end of the rechargeable capacitor at the same time;

Port No. 5 of the 555 timer is directly grounded after being connected in series with the capacitor 2;

Port No. 6 of the 555 timer is connected to port No. 2 of the 555 timer, and connected in series with the diode 1 to the lower end of the resistor 1;

Port No. 7 of the 555 timer is connected to the lower end of the resistor 1, and is connected to the P pole of the diode 2 at the same time;

Port No. 8 of the 555 timer is connected in series with the rechargeable capacitor and directly grounded, and connected to a power supply at the same time.

Preferably, the rated voltage of the rechargeable capacitor is 16V, and the capacitance is 100 μF.

Preferably, the resistance value of the resistor 1 is 10KΩ, the resistance value of the resistor 2 is 47KΩ, and the resistance value of the resistor 3 is 10KΩ.

Preferably, the diode 1 and the diode 2 are IN4148 switching diodes.

Preferably, the power supply connected to port No. 8 of the 555 timer is a voltage of 5V.

The water temperature and water level drive circuit of the utility model is formed by connecting a 555 timer, three fixed-value capacitors, a chargeable capacitor, three resistors and two diodes to realize the control of the water temperature and water level. The drive circuit ensures the effective and reliable operation of the entire water temperature and water level module working system.

The beneficial effects of the utility model are: through the water temperature and water level control system, the water level control is increased to 5 levels, the intelligence of the solar water heater is improved, and the operation is more intuitive and convenient under the premise of ensuring practical safety and reliability. Moreover, the effective control of the water temperature by the system does not cause over-burning, and achieves the effect of energy saving.

Description of drawings

Fig. 1 is a schematic diagram of the drive circuit of the water temperature and water level control system of the present invention.

In the figure, NE555 is a 555 timer.

C1 is capacitor 1, C2 is capacitor 2, C3 is capacitor 3, and E1 is a chargeable capacitor.

R1 is resistor 1, R2 is resistor 2, and R3 is resistor 1.

D1 is diode 1 and D2 is diode 2.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail.

The driving circuit schematic diagram of the water temperature and water level control system of the present embodiment is as shown in the accompanying drawing:

A The water temperature and water level control system of the solar water heater is composed of a water temperature and water level module and its driving circuit. The water temperature and water level module includes three modules: water temperature and water level display, water quality detection and driving circuit. A fixed value capacitor, a rechargeable capacitor, three resistors, and two diodes are connected.

B The driving circuit of the water temperature and water level control system is composed of a 555 timer (NE555), capacitor 1 (C1), capacitor 2 (C2) and capacitor 3 (C3), a rechargeable capacitor (E1), resistor 1 (R1 ), resistor 2 (R2) and resistor 3 (R3), diode 1 (D1) and diode 2 (D2) are connected.

C The relationship between the components of the drive circuit of the water temperature and water level control system is mainly:

Port 1 of the 555 timer (NE555) is directly grounded;

The No. 2 port of the 555 timer (NE555) is connected to the N pole of the diode 1 (D1), and at the same time connected in series with the capacitor 1 (C1) and directly grounded;

The No. 3 port of the 555 timer (NE555) is connected in series with the capacitor 3 (C3), and at the same time connected in series with the resistor 3 (R3) and directly grounded;

After the No. 4 port of the 555 timer (NE555) is connected in series with the resistor 1 (R1), resistor 2 (R2) and diode 2 (D2), it is connected to the upper end of the capacitor 1 (C1), and the lower end of the resistor 2 (R2) It is connected to the N pole of the diode 2 (D2), the P pole of the diode 2 (D2) is connected to the upper end of the capacitor 1 (C1), and the No. 4 port of the 555 timer (NE555) is connected to the rechargeable capacitor (E1) at the same time. upper connection;

The No. 5 port of the 555 timer (NE555) is connected in series with the capacitor 2 (C2) and directly grounded;

The No. 6 port of the 555 timer (NE555) is connected to the No. 2 port of the 555 timer (NE555), and at the same time, it is connected to the lower end of the resistor 1 (R1) behind the diode 1 (D1);

The No. 7 port of the 555 timer (NE555) is connected to the lower end of the resistor 1 (R1), and at the same time connected to the P pole of the diode 2 (D2);

Port No. 8 of the 555 timer (NE555) is connected in series with the rechargeable capacitor (E1) and directly grounded, and at the same time connected to a power supply.

Preferably, the rated voltage of the rechargeable capacitor (E1) is 16V, and the capacitance is 100 μF.

Preferably, the resistance value of the resistor 1 (R1) is 10KΩ, the resistance value of the resistor 2 (R2) is 47KΩ, and the resistance value of the resistor 3 (R3) is 10KΩ.

Preferably, diode 1 (D1) and diode 2 (D2) are IN4148 switching diodes.

Preferably, the power supply connected to port No. 8 of the 555 timer is a voltage of 5V.

D The driving circuit ensures the effective and reliable operation of the entire water temperature and water level module working system.

Through the driving circuit, the intelligentization of the solar water heater is realized, and the operation is more intuitive and convenient under the premise of ensuring practicality, safety and reliability.

The specific working mode of the water temperature and water level control system of the present utility model is as follows:

1. Water level classification: five levels of water level display.

键调整。2. Water level preset: 50, 80, 100% of the water level can be preset. Press the water key, the water level flashes using ▲,

key to adjust.

键调整。定时加热若不需要启动电加热，可预置为00℃。3. Water temperature preset: Preset the heating temperature range: 30°C to 80°C, press the heating button, the temperature will flash and use ▲,

key to adjust. If the timing heating does not need to start electric heating, it can be preset to 00°C.

4. Water level indication: Display the actual water level inside the solar water heater.

5. Water temperature indication: Display the actual water temperature inside the solar water heater.

6. Temperature control mode: when the water tank is not full, the water temperature is higher than the temperature control water supply temperature set by the user (the original factory setting is 60°C), and the water is automatically replenished to the appropriate water temperature 10°C lower than the temperature control temperature, (water supply to 100°C %, the water temperature has not dropped to the appropriate temperature, and the water supply will be automatically stopped) This function can prevent the unreasonable phenomenon of low water volume and high water temperature. When the water is being used (the water level changes), it will be delayed for 30 minutes. Start water supply when water is being used, and the time with temperature control function: 8:00~17:00. The temperature of the original temperature control mode is 60°C and the water level is 100%. In this mode, the electric heating will not be automatically started, and the user can choose according to the needs Manual heating, this mode is the most energy-efficient.

7. Constant temperature heating: The water temperature of the water tank is 6°C lower than the constant temperature, and the heating is started after a delay of 30 minutes, and heated to the constant temperature to ensure a constant water temperature in the water tank. (When the constant temperature is started for the first time, if the temperature is lower than the constant temperature, the heating will be started immediately) If the water level is lower than 50%, the water supply will be automatically started immediately. Restart the heating to avoid dry burning. Therefore, the water level cannot be lower than 50%. It is recommended to install the upper and lower water pipes so as not to affect the continuous large amount of water used by users. The original constant temperature is 60°C and the water level is 100%.

Keep pressing the heating button to enter the constant temperature heating function. When entering the constant temperature, the temperature flashes to adjust the constant temperature (the original setting is 60°C), otherwise, this function will be cancelled.

8. Constant water level: The water level of the water tank is lower than the preset constant water level, and the water supply is delayed for 30 minutes, and the water supply reaches the constant water level. Ensure that the water level of the water tank is not lower than the preset constant water level. When the constant water level is turned on for the first time, if the water level is lower than the preset constant water level, fill it up to the constant water level immediately. It is recommended to install the upper and lower water pipes so as not to affect the continuous large amount of water used by users. The original constant water level is 100%, and the temperature is 60°C.

Press and hold the upper water key to enter the constant water level function. When entering the constant water level, the water level will flash to adjust the constant water level (the original setting is 100% water level), otherwise, this function will be cancelled.

Claims (5)

1. The water temperature and water level control system of a kind of solar water heater is made up of water temperature and water level module and drive circuit thereof, it is characterized in that, water temperature and water level module comprises three modules of water temperature and water level display, water quality detection and drive circuit, described water temperature and water level drive circuit is It consists of a 555 timer (NE555), capacitor 1 (C1), capacitor 2 (C2) and capacitor 3 (C3), a rechargeable capacitor (E1), resistor 1 (R1), resistor 2 (R2) and resistor 3 ( R3), diode 1 (D1) and diode 2 (D2) are connected: Port No. 1 of the 555 timer (NE555) is directly grounded; The No. 2 port of the 555 timer (NE555) is connected to the N pole of the diode 1 (D1), and is directly grounded after being connected in series with the capacitor 1 (C1); Port No. 3 of the 555 timer (NE555) is connected in series with the capacitor 3 (C3), and is directly grounded after being connected in series with the resistor 3 (R3) simultaneously; After the No. 4 port of the 555 timer (NE555) is connected in series with the resistor 1 (R1), the resistor 2 (R2) and the diode 2 (D2), it is connected to the upper end of the capacitor 1 (C1) , wherein, the lower end of the resistor 2 (R2) is connected to the N pole of the diode 2 (D2), and the P pole of the diode 2 (D2) is connected to the upper end of the capacitor 1 (C1), Port No. 4 of the 555 timer (NE555) is simultaneously connected to the upper end of the rechargeable capacitor (E1); Port No. 5 of the 555 timer (NE555) is directly grounded after being connected in series with the capacitor 2 (C2); The No. 6 port of the 555 timer (NE555) is connected to the No. 2 port of the 555 timer (NE555), and is connected to the lower end of the resistor 1 (R1) after being connected in series with the diode 1 (D1) at the same time; Port No. 7 of the 555 timer (NE555) is connected to the lower end of the resistor 1 (R1), and is connected to the P pole of the diode 2 (D2); Port No. 8 of the 555 timer (NE555) is connected in series with the rechargeable capacitor (E1) and directly grounded, and simultaneously connected to a power supply. 2. The water temperature and water level control system of solar water heater according to claim 1, characterized in that, the rated voltage of the rechargeable capacitor (E1) is 16V, and the capacitor capacity is 100 μF. 3. The water temperature and water level control system of solar water heater according to claim 1, characterized in that, the resistance value of said resistor 1 (R1) is 10KΩ, the resistance value of said resistor 2 (R2) is 47KΩ and the resistance value of said resistor 3 (R3) has a resistance of 10KΩ. 4. The water temperature and water level control system of a solar water heater according to claim 1, characterized in that, said diode 1 (D1) and diode 2 (D2) are switching diodes. 5. The water temperature and water level control system of solar water heater according to claim 1, characterized in that the power supply connected to port No. 8 of the 555 timer (NE555) is a voltage of 5V. the

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