CN201382608Y - Anti-freezing device for automatic emptying of solar water pipeline - Google Patents

Abstract

The utility model belongs to an automatic emptying and antifreezing device for solar water delivery pipelines, which adopts a device between the heat preservation water tank and the upper and lower water delivery pipelines to automatically empty the pipelines between the outer end of the heat preservation water tank and the outdoor water delivery pipe. Siphon structure. The utility model can effectively prevent freezing blockage and cracking of the outdoor water delivery pipeline of the solar water heater, and has the advantages of simple structure, high safety factor, low cost, easy operation, wide applicability, safety and reliability and long service life.

Description

Anti-freezing device for automatic emptying of solar water pipeline

technical field

The utility model belongs to an automatic emptying and antifreezing device for a solar water delivery pipeline.

Background technique

In recent years, solar energy, as a kind of green energy, has been developed and utilized in solar water heaters and hot water projects, and is favored by people. However, in areas below 0°C in winter, the outdoor water delivery pipelines of solar water heaters are severely damaged by freezing and cracking, which affects the normal use of water heaters. Wrapping the water pipe with thermal insulation material is also difficult to work when the temperature is low. For this reason, people have introduced technical solutions such as water pipes and electric heating belts. However, the existing technical solutions have complex structures, high costs, troublesome operations, and are prone to failure. Shortcoming, it is difficult to popularize and use.

Contents of the invention

The purpose of this utility model is to design an automatic emptying anti-freezing device for solar water pipelines, which can effectively prevent freezing and cracking of outdoor water pipelines of solar water heaters, and has the advantages of simple structure, high safety factor, low cost, easy operation and applicability Wide, safe and reliable and long service life advantages. For this reason, the utility model adopts to be provided with a suction siphon structure that makes the pipeline between the outer end of the heat preservation water tank and the outdoor water delivery pipe empty automatically between the heat preservation water tank and the upper and lower water delivery pipes. Above-mentioned structural design has reached the purpose of the utility model.

The utility model can effectively prevent the outdoor water delivery pipeline of the solar water heater from freezing and cracking, and has the advantages of simple structure, high safety factor, low cost, easy operation, wide applicability, safety and reliability, and long service life.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the structural representation of another embodiment of the utility model

Fig. 3 is the structural representation of another embodiment of the utility model

Detailed ways

As shown in Fig. 1 to Fig. 3, a kind of solar energy water pipeline automatic emptying antifreeze device mainly is made up of insulation water tank 9, upper and lower water delivery pipe 5, upper water valve 1, lower water valve 2. A siphon structure for automatically emptying the pipeline between the outer end of the heat preservation water tank and the outdoor water delivery pipe is provided between the heat preservation water tank and the upper and lower water delivery pipes.

As shown in Figure 1, the described siphon structure includes an inverted U-shaped siphon 6, a vent 7 and an air solenoid valve 8, and the opening on the top of the insulated water tank is inserted into one end of the inverted U-shaped siphon, and the other end of the inverted U-shaped siphon Connect to the indoor waterway. The inverted U-shaped siphon constitutes the outdoor water delivery pipe.

The indoor waterway is that the upper and lower water delivery pipes communicate with the lower port of the inverted U-shaped siphon, and the upper and lower water delivery pipes communicate with the water inlet pipe through the upper water flow switch 4 and the upper water valve. The upper and lower water delivery pipes communicate with the water outlet pipes through the lower water flow switch 3 and the lower water valve 2. The upper and lower water delivery pipes that are higher than the inlet and outlet pipes in the room communicate with a drain pipe 12, and the drain pipe is provided with a drain solenoid valve 13. The lower end of the drain pipe and the upper and lower water delivery pipes at the upper end of the water inlet and outlet pipes are provided with a water storage device 11 . The effect of water storage device is water storage, is used for injecting a small amount of supplementary water in the upper and lower water delivery pipes of its lower end, prevents that there is no water in the upper and lower water delivery pipes. The effect of water inlet pipe is to inject cold water in the thermal water tank, treat that cold water becomes hot water after absorbing solar heat in the solar heat absorbing pipe, then enters the outlet pipe for use from the upper and lower water delivery pipes through the lower water flow switch and the lower water valve. The upper water flow switch, the lower water flow switch, the drainage solenoid valve and the air solenoid valve are all connected to the controller by the wire 16 and are controlled by the controller 15 to open and close the power supply 14 . The emptying pipe 10 communicates with the inner upper end of the thermal insulation water tank, and is used to discharge the gas in the thermal insulation water tank. Controller can select program controller for use, also can select manual switch for use, is prior art, so repeat no more.

In the antifreeze season, turn on the power. At this time, the air solenoid valve is opened for air intake, the drain solenoid valve is opened for drainage, and the water in the upper and lower water delivery pipes above the connection between the upper and lower water delivery pipes and the drain pipe (the outdoor water delivery pipe is formed by an inverted U-shaped siphon) is discharged and air enters. The upper and lower water delivery pipes below the connection between the upper and lower water delivery pipes in the room and the drain pipe keep water in the upper and lower water delivery pipes, and the liquid level in the inverted U-shaped siphon pipe plugged into the thermal insulation water tank drops to the same level as the liquid level in the thermal insulation water tank. The part of the upper and lower water delivery pipes is in an empty and anti-freeze state without water, so as to achieve the purpose of preventing freezing damage to this section of the pipeline. When it is necessary to fill water into the thermal water tank (water supply), open the water supply valve to have a water flow through the water supply flow switch, the circuit is turned on, and the air solenoid valve and drain solenoid valve are automatically closed. The water flows into the thermal insulation water tank through the upper water flow switch, the upper and lower water delivery pipes, and the inverted U-shaped siphon, and the air in the inverted U-shaped siphon is driven into the thermal insulation water tank and discharged into the atmosphere through the emptying pipe. The water valve is closed when the water is supplied. When the insulated water tank is full of water, the water supply valve is closed, the water supply flow switch is closed simultaneously, the air solenoid valve and the drain solenoid valve are opened, and the outdoor upper and lower water delivery pipes are in the emptying antifreeze state again. When hot water is used (water), the upper water valve is closed at this time, the water valve is opened, the water flow switch of the water is turned on, the air solenoid valve and the drain solenoid valve are both in the closed state, and the water valve is closed after the water is used, and the air solenoid valve The air intake and drainage solenoid valves are opened again, and the above process is repeated to achieve the purpose of automatically emptying the upper and lower water pipes to prevent freezing. When the season does not need antifreezing, the power supply is turned off, and the air solenoid valve and drain solenoid valve are automatically closed and do not work.

As shown in FIG. 2 , the siphon structure includes a siphon, a vent and an air solenoid valve. The inverted siphon is a suit siphon, and the suit siphon is composed of an outer sleeve 17 , an inner sleeve 18 , and a water inlet and outlet 19 . There is a certain gap between the outer sleeve and the inner sleeve, and the top and bottom of the heat preservation water tank are provided with through holes for inserting the suit siphon. The upper nozzle of the outer casing is an air vent and is higher than the top of the thermal insulation water tank. The upper nozzle of the inner casing is higher than the upper end surface (the highest liquid level) in the thermal insulation water tank. The bottom of the outer casing is blocked with the inner casing. A water inlet and outlet are arranged at the lower part of the outer casing and the upper part of the bottom of the liner of the thermal insulation water tank. The lower nozzle of the inner casing is connected with the indoor water circuit.

The indoor waterway is that the upper and lower water pipes communicate with the lower port of the siphon, and the water inlet pipe controlled by the upper water valve communicates with the upper and lower water pipes between the inverted hot water check valve 21 and the one-way water flow switch 31 . The other port of the one-way water flow switch communicates with the water outlet pipe through the water valve and communicates with the upper and lower water pipes at the other end of the hot water check valve through the cold water check valve 20 of the upright installation. The upper and lower water pipes that are higher than the inlet and outlet pipes in the room are connected with a drain pipe, the drain pipe is provided with a drain solenoid valve, and the lower end of the drain pipe and the upper and lower water pipes at the upper end of the water inlet and outlet pipes are provided with a water storage device.

In the antifreeze season, turn on the power. When it is necessary to fill water into the thermal insulation water tank (water supply), the water valve is closed when the water is supplied, and the water supply valve is opened, the hot water check valve is automatically closed, and the cold water flows through the one-way water flow switch and the one-way water flow switch guide. When the circuit is connected, the air solenoid valve and the drain electric valve are closed at the same time, and the cold water flows through the cold water check valve and enters the heat preservation water tank. When using hot water (water), open the water valve, the water valve is closed when the water is launched, the cold water check valve is closed, the hot water check valve is opened, the one-way water flow switch conducts the circuit, the air solenoid valve, and the drain solenoid valve closure. Otherwise after the cold and hot water stop, the upper and lower water valves are closed, the lower water flow switch closes the circuit, the air solenoid valve and the drainage solenoid valve open the air intake, and the water in the outdoor inner casing is emptied to prevent freezing.

As shown in FIG. 3 , the siphon structure includes an inverted U-shaped siphon, a vent and an air solenoid valve, and the inverted U-shaped siphon is connected to the indoor waterway.

The indoor waterway is the water inlet pipe controlled by the upper water valve and the water outlet pipe controlled by the lower water valve. The upper and lower water pipes are connected through a two-way water flow switch 22, and the upper and lower water pipes are connected with the lower port of the inverted U-shaped siphon. The top of the water pipe communicates with a drain pipe, the drain pipe is provided with a drain solenoid valve, and the lower end of the drain pipe and the upper and lower water delivery pipes at the upper end of the water inlet and outlet pipes are provided with a water storage device.

In the antifreeze season, turn on the power. When needing to fill water in the thermal water tank, open the upper water valve (this moment, the lower water valve is closed), the cold water flows through the two-way water flow switch, the two-way water flow switch conducts the circuit, and the air solenoid valve and the drain electric valve are closed simultaneously. When using hot water, open the lower water valve (the upper water valve is closed at this time), the hot water flows through the two-way water flow switch conduction circuit, and the air solenoid valve and the drain solenoid valve are closed. Otherwise, close the upper and lower water valves after the cold and hot water stops, the two-way water flow switch has no water flow and close the circuit, the air solenoid valve and the drain solenoid valve open the air intake, and the water in the outdoor inverted U-shaped siphon pipe is drained to prevent freezing.

In a word, the utility model can effectively prevent the outdoor water delivery pipeline of the solar water heater from freezing and cracking, and has the advantages of simple structure, high safety factor, low cost, easy operation, wide applicability, safety and reliability and long service life.

Claims (7)

1. An antifreeze device for automatic emptying of solar water pipelines, mainly composed of an insulated water tank, an upper and lower water pipeline, an upper water valve, and a lower water valve. It is characterized in that a A siphon structure that automatically empties the pipeline between the outer end of the thermal insulation water tank and the outdoor water delivery pipe. 2. The anti-freezing device for automatic emptying of solar water pipelines according to claim 1, characterized in that: the siphon structure includes an inverted U-shaped siphon, a vent and an air solenoid valve, and the top opening of the heat preservation water tank is inserted into the connection One end of the inverted U-shaped siphon, the other end of the inverted U-shaped siphon is connected to the indoor waterway, and the inverted U-shaped siphon constitutes an outdoor water delivery pipe. 3. The anti-freezing device for automatic emptying of solar water delivery pipelines according to claim 1 or 2, characterized in that: the indoor waterway is that the upper and lower water delivery pipes communicate with the lower port of the inverted U-shaped siphon, and the upper and lower water delivery pipes pass through the upper water flow The switch and the upper water valve are connected to the water inlet pipe, the upper and lower water delivery pipes are connected to the water outlet pipe through the water flow switch and the lower water valve, and the upper and lower water delivery pipes higher than the inlet and outlet water pipes in the room are connected to a drain pipe, and the drain pipe is provided with a drain solenoid valve. A water storage device is arranged on the upper and lower water delivery pipes at the lower end of the drain pipe and the upper end of the water inlet and outlet pipes. 4. The anti-freezing device for automatic emptying of solar water pipelines according to claim 1, characterized in that: the structure of the siphon includes a siphon, a vent and an air solenoid valve, the siphon is a set siphon, and the set siphon is formed by an outer sleeve , inner casing, water inlet and outlet; there is a certain gap between the outer casing and the inner casing, and the top and bottom of the heat preservation water tank have a through hole to insert the suit siphon, and the upper nozzle of the outer casing is a vent and is higher than the heat preservation water tank The upper nozzle of the inner casing is higher than the upper surface of the heat-insulating water tank, the bottom of the outer casing is sealed with the inner casing, and the lower part of the outer casing and the upper part of the bottom of the inner tank of the heat-insulating water tank are provided with water inlet and outlet, and the inner casing The lower nozzle is connected with the indoor waterway. 5. The anti-freezing device for automatic emptying of solar water delivery pipeline according to claim 1 or 4, characterized in that: the indoor waterway is that the upper and lower water delivery pipes communicate with the lower port of the inverted U-shaped siphon, and the inlet and outlet are controlled by the water supply valve. The water pipe is connected to the upper and lower water pipes between the inverted hot water check valve and the one-way downflow switch. The upper and lower water delivery pipes at the other end of the installed hot water check valve are connected, and the upper and lower water delivery pipes that are higher than the inlet and outlet pipes in the room are connected to a drain pipe. The water pipe is provided with a water reservoir. 6. The anti-freezing device for automatic emptying of solar water pipelines according to claim 1 or 4, characterized in that: the structure of the siphon includes an inverted U-shaped siphon, an air vent and an air solenoid valve, and the inverted U-shaped siphon and The indoor waterway is connected. 7. The anti-freezing device for automatic emptying of solar water pipelines according to claim 6, characterized in that: the indoor waterway is controlled by a water inlet pipe controlled by a water supply valve and a water outlet pipe controlled by a water discharge valve through a two-way water flow switch Connect the upper and lower water pipes, the upper and lower water pipes are connected with the lower port of the inverted U-shaped siphon, and the upper part of the room is higher than the water inlet and outlet pipes. There is a water reservoir on it.

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