CN201488120U - Solar water heater pipeline connection and control system - Google Patents

Abstract

A pipeline connection and control system for a solar water heater, comprising a water pipeline (3), a water tank (18) connected to a solar heat collecting tube, and electric heating devices respectively connected to a circuit controller (14) are installed in the water tank (18) (15), water level sensor (16) and temperature sensor (17), it is characterized in that the water pipe line (3) is: the electromagnetic valve (5) of the water intake end connected to the water intake end, the water outlet of the electromagnetic valve (5) of the water intake end One end is divided into two paths through a three-way pipe, one path is connected to the water tank (18) after passing through the solenoid valve (2) at the outlet end of the water tank, and the other path is connected to the water tank after passing through the solenoid valve (11) at the water inlet end of the water tank through the water pump (6) (18), and be connected with water device (9,10) between water pump (6) and water tank water inlet electromagnetic valve (11). This design has multiple functions such as pressurized water supply, hot water pressurized water outlet and pipeline circulation antifreeze and crack prevention.

Description

Solar water heater pipeline connection and control system

1. Technical field

The utility model relates to a pipeline connection and control system of a solar water heater.

2. Background technology

With the continuous improvement of people's living standards and the enhancement of environmental protection awareness, solar water heaters have gradually entered the homes of more and more ordinary people. However, since solar water heaters are generally scattered and installed on the roofs of residents with small height differences, it is often necessary to take pressurized water supply, hot water pressurized water outlets, and pipeline anti-freeze and crack-proof insulation measures. None of the control systems can meet the actual needs of pressurized water supply, hot water pressurization, and anti-freeze and anti-cracking of pipelines. Therefore, the existing solar water heaters are difficult to be popularized and used in the vast agricultural and herdsman areas where the temperature difference between day and night is large throughout the year.

For example, Chinese patent No. 200720110409.4 discloses a solar water heater pipeline connection system, including a solar water heater water tank, a solar water heater controller, a water tank sensor, a water supply valve, a water pump, a water control switch, a reverse water flow control valve, connecting water pipes and user indoor pipes. The water supply valve is connected to the water inlet of the water pump and the stop flow end of the reverse flow control valve respectively, the water outlet of the water pump is connected to the water inlet of the water tank, the water outlet of the water tank is connected to the water control switch, and the outlet of the water control switch is connected to the user's indoor After the inlet of the pipeline is connected, the other end of the user indoor pipeline is connected with the water inlet port of the reverse flow control valve, and the solar water heater controller is connected with the water tank sensor, the water supply valve, the water pump and the water control switch respectively.

Chinese patent No. 200720110410.7 discloses a solar water heater pipeline connection system, including a solar water heater tank, a solar water heater controller, a water tank sensor, a water supply valve, a water pump, a water control switch, a reverse water flow control valve, connecting water pipes and user indoor pipes. The water supply valve is connected to the water inlet of the water tank and the stop flow end of the reverse flow control valve respectively, the water outlet of the water tank is connected to the water control switch, the outlet of the water control switch is connected to the water inlet of the water pump, and the water outlet of the water pump is connected to the user's indoor After the inlet of the pipeline is connected, the other end of the user indoor pipeline is connected with the water inlet port of the reverse flow control valve, and the solar water heater controller is connected with the water tank sensor, the water supply valve, the water pump and the water control switch respectively.

But above-mentioned patent still does not solve hot water supercharging water outlet problem.

3. Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art, and to design a solar water heater pipeline connection and control system with multiple functions such as pressurized water supply, hot water pressurized water outlet, pipeline antifreeze, anti-crack and heat preservation.

The basic thinking of the utility model is:

① Realization of automatic water filling function: when the water level sensor senses that the water level of the water tank is lower than the minimum set value, the circuit controller outputs two sets of voltage circuits at the same time; one set of 12V/1A DC voltage circuits simultaneously supplies the solenoid valve at the outlet end of the water tank , The solenoid valve at the water intake end and the solenoid valve at the water inlet end of the water tank work, so that the solenoid valve at the water outlet end of the water supply tank is in the cut-off state, the solenoid valve at the water intake end, and the solenoid valve at the water inlet end of the water tank are in the open state, and a group of 220V voltage circuits supply the water pump. The pipeline starts to fill with water to raise the water level of the water tank; when the water level sensor of the water tank detects that the water level of the water tank reaches the maximum water level setting value, the output voltage circuit is disconnected at the same time, and the water pump, the solenoid valve at the outlet of the water supply tank, and the water intake The electromagnetic valve at the water end and the electromagnetic valve at the water inlet end of the water tank stop working at the same time, and automatically return to the standby state. The instrument can also be equipped with functions such as forced water supply: that is, as long as the forced water supply switch is clicked when the maximum water level is not reached, the water supply function will start immediately. When the maximum water level is reached, the output voltage circuit will be disconnected at the same time. , the water pump and solenoid valve stop working at the same time, and automatically return to the standby state.

② Realization of automatic cycle function: when the temperature difference between the temperature sensed by the low temperature sensor and the temperature sensed by the high temperature sensor is greater than the set value, the circuit controller outputs two sets of voltage circuits at the same time; one set of 12V/1A DC voltage circuits for water supply The solenoid valve at the water inlet end of the tank works, and a group of 220V voltage circuit supplies the water pump to work, and the water flows through the water tank → (water outlet end of the water tank) manual stop valve → solenoid valve at the water outlet end of the water tank → water pump → solenoid valve at the water inlet end of the water tank → (water tank inlet end ) manual shut-off valve → return to the water tank; gradually balance the water temperature sensed by the low temperature sensor and the temperature sensor; when the temperature sensed by the low temperature sensor is greater than the set value or When the value is set, the output voltage circuit is disconnected at the same time, the water pump, the solenoid valve at the water outlet end of the water tank, and the solenoid valve at the water inlet end of the water tank stop working at the same time, and automatically return to the standby state. In practice, whether to use the temperature value sensed by the low temperature sensor or the temperature difference between the temperature value sensed by the low temperature sensor and the temperature sensed by the temperature sensor as an indicator for starting the automatic cycle function can be determined according to specific circumstances.

③Manual boosting function: In order to reduce costs, the system can be equipped with the function of a pressure-free controller. When boosting is required, the manual boosting switch of the circuit controller will be activated, and the circuit controller will output 220V AC, and the water supply pump will work. Output water through the water tank → (water outlet end of the water tank) manual stop valve → solenoid valve at the water outlet end of the water tank → water pump → water device. When the booster is not in use, the manual booster switch is turned off to turn off the power supply, the output voltage circuit is disconnected, the water pump stops working, and returns to the standby state.

④Automatic pressurization function: When the pressure sensed by the pressure sensor is lower than the set value, the circuit controller outputs 220V AC, the water supply pump works, and the water flows through the water tank → (water outlet end of the water tank) manual shut-off valve → solenoid valve at the water outlet end of the water tank → Water pump → water device outputs water. When the water is stopped, the water pump stops working and returns to the standby state automatically.

The utility model is specifically realized through the following technical solutions: a solar water heater pipeline connection and control system, including a water pipe pipeline, a water tank connected with a solar heat collecting pipe, and electric heating devices respectively connected with a circuit controller are installed in the water tank , a water level sensor and a temperature sensor, characterized in that the water pipe pipeline is: a solenoid valve at the water intake end connected to the water intake end; After that, it is connected to the water tank, and the other path passes through the water pump and then through the solenoid valve at the water inlet end of the water tank, and then connects to the water tank, and a water device is connected between the water pump and the solenoid valve at the water inlet end of the water tank;

Wherein, the circuits of the water pump, the solenoid valve at the water intake end, the solenoid valve at the water inlet end of the water tank, and the solenoid valve at the water outlet end of the water tank are respectively connected with the circuit controller;

And a low-temperature sensor is installed on the water pipeline, and the low-temperature sensor is connected with the circuit controller. The temperature value sensed by the low temperature sensor, or the difference between the temperature value sensed by the low temperature sensor and the temperature sensed by the temperature sensor is the index value for starting the automatic cycle function.

In the utility model, the water circuit circulation system between the solar heat collecting tube and the water tank is generally an independent system, and the electric heating device is a necessary auxiliary device, which is the generally adopted mode of existing solar water heaters. As for the circuit controller, there are many kinds of existing control methods, including independent control of each part, and some integrated and fully integrated. Labor can design the corresponding circuit controller. Low temperature sensors should be located where the water lines are most likely to freeze. The water pump can realize the functions of pressurized water supply, hot water pressurized water outlet and pipeline water circulation antifreeze and crack prevention according to actual needs. "Connection" refers to the connection relationship between water pipes, and "connection" refers to the connection relationship between circuits.

A further scheme is: a pressure sensor is installed on the water pipeline between the water outlet end of the water tank and the water device, and the circuit of the pressure sensor is connected with the circuit controller. When the solar water heater is installed at a higher water outlet pressure to meet the needs, the pressure sensor and corresponding circuit can also be omitted, and the water pump can be manually turned on to realize the pressurized water outlet of the hot water when necessary.

A further scheme is: a manual shut-off valve is installed at the water outlet end of the water tank, a manual shut-off valve is installed at the water inlet end of the water tank, and a manual shut-off valve is equipped at the water intake end. The main purpose is to close the manual stop valve when the pipeline and pipeline components need to be repaired or improved, so as to facilitate maintenance and replacement.

A further solution is: the water intake end is equipped with a one-way stop valve. It is mainly used to pump groundwater to cut off the water flow in one direction and reduce the emptying time. When the water source is artesian water, the one-way stop valve may not be required.

A further solution is: the electromagnetic valve at the water intake end, the electromagnetic valve at the water inlet end of the water tank, and the electromagnetic valve at the water outlet end of the water tank are all low-pressure electromagnetic valves, and the electromagnetic valve at the water outlet end of the water tank is a normally open electromagnetic valve, and the electromagnetic valve at the water intake end and the electromagnetic valve at the water tank inlet end The valve is a normally closed solenoid valve. The use of low-pressure solenoid valves is mainly due to safety needs.

When the solar water heater is not used for a long time, the power supply of the whole system should be cut off and the water stored in the pipeline should be drained through the water device.

The utility model has the advantages of only adopting a relatively simple pipeline and circuit design, and only using one water pump to realize the multi-purpose function of one machine, that is, to complete pressurized water supply, hot water pressurized water outlet, and pipeline circulation to resist freezing, cracking, and heat preservation and other functions. It is conducive to the popularization and use of solar water heaters in the vast agricultural and herdsman areas where the temperature difference between day and night is very large throughout the year.

4. Description of drawings

Fig. 1 is a schematic diagram of the principle of the pipeline connection and control system of the embodiment of the present invention.

Fig. 2 is a flow chart of the water flow in the automatic water supply state of the embodiment of the present invention.

Fig. 3 is a flow chart of the water flow in the automatic circulation state of the embodiment of the present invention.

Fig. 4 is a flow chart of the water flow in the automatic (or manual) pressurized state of the embodiment of the present invention.

In the figure: 1. (Water tank outlet) manual shut-off valve, 2. Water tank outlet solenoid valve, 3. Water pipe pipeline, 4. (Water intake end) manual shut-off valve, 5. Water intake end solenoid valve, 6. Water pump, 7 . Pressure sensor, 8. Low temperature sensor, 9. Shower device, 10. Faucet, 11. Solenoid valve at water tank inlet, 12. (Water tank water inlet) manual shut-off valve, 13. Photoelectric switch, 14. Circuit control Device, 15, electric heating device, 16, water level sensor, 17, temperature sensor, 18, water tank, 19, one-way stop valve.

5. Specific implementation

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

As shown in Fig. 1, a kind of solar water heater pipeline connection and control system, comprises water pipe pipeline 3, and the water tank 18 that is connected with solar collector pipe, is housed in the water tank 18 the electric heating device 15 that is connected with circuit controller 14 respectively, water level sensor device 16 and temperature sensor 17, characterized in that the water pipe line 3 is: a water intake solenoid valve 5 connected to the water intake end, the water outlet end of the water intake solenoid valve 5 is divided into two paths through a three-way pipe, and one path passes through the water outlet end of the water tank The solenoid valve 2 is connected to the water tank 18, and the other way passes through the self-priming water pump 6 and then passes through the water tank inlet solenoid valve 11 to communicate with the water tank 18, and a water device is connected between the water pump 6 and the water tank inlet solenoid valve 11 ( Shower 9 and water tap 10);

Wherein, the circuits of the water pump 6, the solenoid valve 5 at the water intake end, the solenoid valve 11 at the water inlet end of the water tank and the solenoid valve 2 at the water outlet end of the water tank are connected with the circuit controller 14 respectively;

And low temperature sensor 8 is housed on water pipe line 3, and pressure sensor 7 is housed on the water pipe line 3 between the outlet end of water tank 18 and water device (shower device 9 and faucet 10), low temperature sensor 8 and pressure The circuits of the sensors 7 are respectively connected with circuit controllers 14 .

A manual shut-off valve 1 is installed at the water outlet end of the water tank, a manual shut-off valve 12 is installed at the water inlet end of the water tank, and a manual shut-off valve 4 is installed at the water intake end.

A one-way shut-off valve 19 is installed at the water intake end.

The solenoid valve 5 at the water intake end, the solenoid valve 11 at the water inlet end of the water tank, and the solenoid valve 2 at the water outlet end of the water tank are all low-pressure solenoid valves, and the solenoid valve 2 at the water tank outlet end is a normally open solenoid valve, and the solenoid valve 5 at the water intake end and the solenoid valve at the water tank inlet end are all low-pressure solenoid valves. Valve 11 is a normally closed solenoid valve.

in:

1. The names and functions of the main components are further described as follows:

No. 1, 4, 12: manual stop valve; the main purpose is to close the manual stop valve when the pipeline and pipeline components need to be repaired or improved, so as to facilitate maintenance.

2, 5, 11: Low-voltage solenoid valve: The main purpose is to provide or disconnect the 12V DC safety voltage working circuit according to the different needs of the working state, so that the pipeline is in the on-off state, so as to realize the normal operation of various functions. Among them: 2 is a normally open solenoid valve, 5 and 11 are normally closed solenoid valves.

3: PPR water pipe pipeline: the pipeline connecting the entire waterway operation, the specification depends on the waterway flow

6: Self-priming water pump: the only driving force for the forced operation of the entire pipeline, one machine with multiple functions; when filling water: it can self-suction water from a deep well within 20 meters in depth and send it to the water tank; when boosting: and It is required to have a pressure of 0.2MPa or more at the water outlet. When circulating: it can fully promote the flow of liquid. It is the core component of this piping system.

17. Temperature sensor: send the temperature sensed by the relatively high temperature zone back to the circuit controller 14 for temperature display;

8. Low temperature sensor: send the temperature sensed in the low temperature area back to the circuit controller 14 for temperature display; at the same time, it can be used as a temperature difference base.

18. Water tank: a water tank for water storage, mainly used for water storage and heat preservation.

9. Shower head: used for bathing, including water mixing valve, etc.

7. Pressure sensor: When the pressure in the pipe sensed by the selected water area is less than 0.2MPa, the circuit controller 14 gives a "connect" signal to start the self-priming water pump 6; when the pressure is greater than 0.2MPa, the circuit controller 14 14 provides a "disconnect" signal, and the self-priming water pump 6 stops working and no longer pressurizes.

10. Faucet: generally refers to water for other purposes.

13. Photoelectric switch or switch for other purposes: For example, the photoelectric switch can be installed in the room and area where water must pass. After the photoelectric switch detects the suspected flow of people, it will output a switch signal to trigger the booster function to enter the working state, or Used for constant temperature solenoid valves and infrared probes, etc.

14. Circuit controller: control the circuit on and off of the corresponding components according to the setting.

15. Electric heating device: When the temperature sensed by the temperature sensor 17 is lower than the set temperature, the device starts heating to increase the temperature of the area.

16. Water level sensor: The water level information sensed in the water storage tank 18 is sent back to the circuit controller 14 for temperature display; at the same time, it is used as the basis for water supply and water stop.

19. One-way cut-off valve: mainly used for one-way cut-off water flow to reduce emptying time.

2. The main working principle of the pipeline is further described as follows: connect the waterway, connect the power supply and each power line, put the manual stop valve 1, 4, 12 in the open position, supply power to the circuit controller 14, and the whole machine starts to work.

① Realization of automatic water filling function: when the water level sensor senses that the water level of the water tank 18 is lower than the minimum set value, the circuit controller 14 outputs two sets of voltage circuits at the same time; , 5, and 11 work, so that the solenoid valve 2 is in the cut-off state, and the solenoid valves 5 and 11 are in the open state. A group of 220V/1 kilowatt voltage circuits are used for the self-priming water pump 6 to work, and the water flows through the water source → 19 → 4 → 5 → 6 → 11 → 12 → 18; water supply is started to increase the water level of the water tank 18; when the water level sensor 16 of the water tank 18 senses that the water level of the water tank 18 reaches the maximum water level setting value, the output voltage circuit is simultaneously cut off Open, self-priming water pump 6, solenoid valve 2, 5, 11 stop working simultaneously, get back to standby state automatically.

② Realization of automatic cycle function: when the difference between the temperature sensed by the low temperature sensor 8 and the temperature sensed by the high temperature sensor 17 is greater than the set value, the circuit controller 14 simultaneously outputs two sets of voltage loops; one set of 12V/1A DC The voltage circuit is for the solenoid valve 11 to work, and a set of 220V/1 kW voltage circuit is for the self-priming water pump 6 to work, and the water flows through the water tank 18→1→2→6→11→12→18; the water temperature of 8 and 17 is balanced; When the temperature difference between 8 and 17 water temperature is less than the set value, the output voltage circuit is disconnected simultaneously, and the self-priming water pump 6 and solenoid valve 11 stop working simultaneously, and automatically return to the standby state. It is also possible to use the electric signal converted from the temperature value sensed by the low temperature sensor directly to the electromagnetic valve 11 and the self-priming water pump 6 .

③Manual boost function: In order to reduce costs, the system can be equipped with the function of a pressure-free controller. When boost is required, the manual boost switch (not shown in the figure) of the circuit controller 14 is activated to output 220V AC. For self-priming water pump 6 work, water flows through water tank 18 → 1 → 2 → 6 → 9 or 10 output water. When the booster is not needed, the manual booster switch is moved to turn off the power supply, the output voltage circuit is disconnected, the self-priming water pump 6 stops working, and automatically returns to the standby state.

④Automatic pressurization function: when the pressure sensed by the pressure sensor 7 is lower than the set value (generally required to be a pressure above 0.2MPa), the circuit controller 14 outputs 220V AC for the self-priming water pump 6 to work, and the water flows through the water tank 18→1→2→6→9 or 10 output water. When not using water, the power circuit of the self-priming water pump 6 is disconnected and automatically returns to the standby state.

⑤ Automatic heating function: that is, when the temperature sensor 17 senses that the temperature in the selected area (i.e. the water in the water tank 18) is lower than the set value, a group of 220V/3 kilowatt voltage circuits are output, and the power supply heating device 15 works Heat is generated to increase the water temperature in the water tank 18; when the water temperature in the water tank 18 reaches the set value, the output voltage circuit of 220V/3 kilowatts is disconnected, the power supply heating device 15 stops working, and automatically returns to the standby state.

As long as the system is in working condition, the water device can realize the function of "hot water immediately when it is turned on"; if the system is properly changed (such as adding two solenoid valves at the front end of the water point, etc., so that the cold and hot water can be mixed effectively), It can also solve the problem of "discharging water when it is too warm".

Claims (5)

1. a pipelines of solar water heater connects and control system, comprise water pipe line (3), the water tank that is connected with solar energy heat collection pipe (18), the electric heater unit (15) that connects with circuit controller (14) respectively is housed in the water tank (18), water level sensor (16) and temperature inductor (17), it is characterized in that water pipe line (3) is: the water intaking end magnetic valve (5) that is connected in the water intaking end, the water side of water intaking end magnetic valve (5) is divided into two-way by a three-way pipe, the back joining water box (18) of the water tank water side magnetic valve (2) of leading up to, another road by behind the water pump (6) again by water tank water intake end magnetic valve (11) back joining water box (18), and between water pump (6) and water tank water intake end magnetic valve (11), be connected with water device (9,10);

Wherein, the circuit of water pump (6), water intaking end magnetic valve (5), water tank water intake end magnetic valve (11) and water tank water side magnetic valve (2) connects with circuit controller (14) respectively;

And low temperature inductor (8) is housed on water pipe line (3), and low temperature inductor (8) connects with circuit controller (14).

2. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that on the water side of water tank (18) and the water pipe line (3) between the water device (9,10) pressure inductor (7) being housed, the circuit of pressure inductor (7) connects with circuit controller (14).

3. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that in the water tank water side hand stop valve (1) being housed, and the water tank water intake end is equipped with hand stop valve (12), and the water intaking end is equipped with hand stop valve (4).

4. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that the water intaking end is equipped with unidirectional stop valve (19).

5. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that water intaking end magnetic valve (5), water tank water intake end magnetic valve (11) and water tank water side magnetic valve (2) all are low-voltage solenoid valves, and water tank water side magnetic valve (2) is a normally open solenoid valve, and water intaking end magnetic valve (5) and water tank water intake end magnetic valve (11) are normally closed solenoid valves.

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