CN200993494Y - Top type constant pressure top water type double-pipe emptying anti-freezing water inlet and outlet device - Google Patents

Abstract

A "top-type constant pressure top-water type double-tube emptying antifreeze water inlet and outlet device" is characterized in that: it is provided with an insulation automatic constant pressure water supply and outlet tank, in which an end-face sealed large-flow float valve is provided, and the float valve mouth is covered with a heat-resistant water inlet pipe, which passes through the hot water connecting pipe and extends into the bottom of the insulation water tank. A siphon hot water pipe is provided on the top of the insulation water tank, and the siphon pipe mouth of the siphon hot water pipe is placed in the insulation constant pressure automatic water supply and outlet tank. A drainage and sewage pipe is provided at the lower part of the side of the insulation water tank, which is connected to the siphon hot water pipe through the drainage and sewage valve. The utility model integrates the automatic constant pressure water supply of the solar water heater and the emptying and antifreeze of the upper and lower water pipes, truly realizing the effective emptying and antifreeze of the solar water heater, thereby not only ensuring the normal operation of the solar water heater in the cold season and saving energy; but also achieving the purpose of not having to drain the cold water in the pipeline before using hot water, saving a large amount of water resources.

Description

Top type constant pressure top water type double pipe emptying antifreeze water inlet and outlet device

Technical field

The utility model relates to automatic constant-pressure water replenishment and double-pipe emptying and anti-freezing of a solar water heater, and provides a "top-type constant-pressure top-water type double-pipe emptying and anti-freezing water inlet and outlet device".

Background technique

As we all know, solar energy is the omnipotent mother on the earth, and it is an inexhaustible clean energy source. A solar water heater is an effective device that directly converts sunlight energy into heat energy. At present, solar water heaters have entered thousands of households, and there are thousands of solar water heater manufacturers in China alone. However, more than 95% of the solar water heater products produced by all manufacturers are open, non-pressure-bearing and water-injected products, and a small amount of them are closed-mouth pressure-bearing. style products. The so-called open non-pressurized falling water type product, that is, the thermal insulation water tank of the solar water heater has inlet and exhaust ports connected to the atmosphere. The thermal insulation water tank is filled with cold water at one time, and the water supply valve is closed. The water outlet at the bottom flows out for use. Because solar water heaters are generally all installed on the top of the house, the longer upper and lower water pipes in the outdoor environment are always in a state of full water. When using hot water, at first it is necessary to drain more cold water in the sewer pipe before using hot water, which not only wastes a lot of water resources, but also brings a lot of inconvenience to use. When the cold winter comes, the water in the upper and lower water pipes is completely blocked by freezing due to the lack of thermal insulation function or poor thermal insulation function of the upper and lower water pipes, resulting in the failure of the solar water heater to work normally. At present, the existing technical solutions for solving the above-mentioned existing problems are: 1. Do a good job of thermal insulation of the upper and lower water pipes; but the cost of thermal insulation is very high, and the construction is difficult, and the cold water in the pipeline still needs to be released before using hot water ; 2. Install an electric or electromagnetic emptying valve at the water outlet of the solar thermal insulation water tank; but this device is not only expensive, but also has malfunctions due to the instability of the electronic components themselves and the safety factors of the power supply used. Potential safety hazards; 3. Three-valve top-water double-pipe evacuation is adopted; although this solution solves the disadvantage of draining cold water first when using hot water, due to the constant change of tap water pressure during water supply and the high floor and bottom water The unequal change of the head makes it difficult to balance the water flow of the upper and lower water: when the water flow of the upper water is greater than the water flow of the outlet, the water in the thermal insulation tank of the solar water heater will overflow; when the water flow of the upper water is smaller than the water flow of the outlet When using hot water, there will be a phenomenon of poor water flow; and, although the technical scheme can be emptied by double pipes at that time, because the solar thermal insulation water tank is in a state of full water, the next day, the water in the thermal insulation water tank will After being heated by the solar collector, the gap between water molecules increases, and the volume continues to expand (according to the daily temperature rise of 60°C, the volume of water increases by about 2-3%, and 2-3% of the water will overflow), according to 100 liters of thermal water tank calculation, will slowly overflow about 2-3 liters of water in the upper and lower water pipes. If in the cold winter, the amount of water overflowing slowly is enough to freeze the upper and lower water pipes, thus losing the practical significance of emptying.

To sum up, as far as the inventors know, the two generations of products of "flat solar water heater" and "vacuum collector tube solar water heater" released after the "stuffy solar water heater" in my country have been used by users for nearly 50 years. All are looking forward to the double-pipe solar water heater products that can be emptied with mature technology, reliable performance, stable and long-term operation, easy to use, and low price. Many manufacturers, organizations and individuals who research and develop solar energy have also paid a lot of hard work for this, and have introduced generations of various double-tube emptying technologies and products, but they have not been able to "break through" due to deviations in thinking. This layer of "window paper".

Contents of the invention

In order to solve the above-mentioned practical problems, the utility model provides a "top-type constant-pressure top-water type double-pipe evacuation antifreeze water inlet and outlet device".

The technical scheme adopted by the utility model to solve the technical problem is: add a "constant pressure top water type double-pipe emptying antifreeze water inlet and outlet device" on the top of the existing water-falling solar water heater heat preservation water tank. Constant pressure water replenishment, water outlet tank, heat preservation constant pressure automatic water replenishment, the bottom of the water outlet tank and the top of the solar water heater insulation water tank are connected by a hot water communication pipe, automatic constant pressure water replenishment for heat preservation, and an end-face sealed large flow float valve is installed in the water outlet tank (The valve nozzle casing at the lower part of the valve is provided with a venting tee and a venting port. The valve is a designed face-sealed large-flow float valve. The buoyancy of the float only needs to overcome the friction of the valve body itself, and the friction is relatively small. Small and relatively constant, not affected by water pressure, therefore, the floating ball can be designed relatively small, so the volume of the water replenishment and water outlet tanks can be made quite small and beautiful, and can ensure that the water flow requirements of different floors are met. It is not affected by the height of the floor.), the float valve mouth is covered with a heat-resistant water inlet pipe, and the upper part of the heat-resistant water inlet pipe is provided with a vent, and the heat-resistant water inlet pipe passes through the hot water connecting pipe and extends into the solar water heater insulation water tank The bottom of the solar water heater heat preservation water tank is provided with a siphon hot water pipe on the top, and the siphon mouth of the siphon hot water pipe is placed in the heat preservation constant pressure automatic water replenishment and water outlet tank. The lower part of the side of the thermal water tank of the solar water heater is equipped with drainage, sewage connection pipes, drainage, and sewage valves (when the valve is opened, it can be used for sewage, and can also be used in accordance with the existing water-falling solar water heater operation mode, except that the valve is closed). The drainage and sewage connection pipes are connected with the siphon hot water pipes through the drainage and sewage valves. When the program is running: open the tap water inlet valve, the cold water is injected from the inlet pipe through the float valve nozzle into the heat-resistant water inlet connection pipe and flows into the bottom of the solar water heater insulation tank (due to the ejection effect, the cold water will not seal the upper part of the large-flow float valve from the end face When the heat preservation water tank of the solar water heater is full of water, the water in the heat preservation water tank will flow back into the heat preservation constant pressure automatic water replenishment and water outlet tank through the ring pipe formed between the hot water connecting pipe and the heat resistance water inlet pipe. As the water level continues to increase, the float is gradually lifted to close the valve. This completes the initial hydration. At this time, close the water inlet valve, and then open the double-pipe emptying valve to empty the pipe. When the siphon hot water pipe is empty, open the hot water valve, keep warm and keep constant pressure to replenish water automatically. , When the water level in the water outlet tank drops to the float valve nozzle, the upper water pipe is connected to the atmosphere, and the upper water pipe is emptied. When using hot water, close the emptying valve of the upper water pipe, open the water inlet valve, and the cold water will enter the thermal insulation water tank of the solar water heater from the float valve through the cold water connecting pipe, and the hot water in it will be pushed into the heat preservation constant pressure automatic water supply through the hot water connecting pipe. In the water tank, when the water level exceeds the siphon ridge, the hot water will flow out from the siphon that has been emptied for use, thus solving the practical problem of needing to drain the cold water before using the hot water. At this time, the float valve is automatically adjusted to maintain constant pressure water supply: because the large flow float valve is used, the water flow in the fully open state of the valve is far greater than the water flow of the solar water heater, so that the float automatically adjusts the valve. The opening degree, so as to realize the demand of constant pressure water replenishment. After emptying, since the set siphon mouth is lower than the space volume in the system between the potential difference between the siphon ridges (referring to the volume that the thermal insulation constant pressure automatic water replenishment tank and the solar water heater thermal water tank are emptied.) The water storage capacity is equal to Or slightly larger than the water volume that the water in the thermal water tank of the solar water heater heats up and expands throughout the day, so when the double pipes are emptied, no overflowing water will enter the pipes and freeze the upper and lower water pipes. That is to say, the utility model "top type constant pressure top water type double pipe evacuation and antifreeze water inlet and outlet device" has been formed.

The beneficial effects of the utility model are: the simple physical and mechanical device is configured on the existing solar water heater, which can realize double-pipe emptying and anti-freezing, ensures the normal operation and use of the solar water heater in cold seasons, and saves Energy; It also realizes the purpose of not needing to drain the cold water in the channel before using hot water, saving a lot of water resources. Moreover, the device can facilitate the transformation and upgrading of the old products of the water-falling solar water heater. The implementation and application of the utility model will bring greater social and economic benefits to the society, benefit the people, and bring benefits and convenience to the majority of users.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing is the structural principle diagram of the utility model.

In the figure, 1. Water inlet valve, 2. Upper water pipe emptying valve, 3. Hot water connecting pipe, 4. Upper water pipe, 5. Float valve nozzle, 6. Ventilation tee, 7. End face sealing large flow float valve, 8 , Insulation casing, 9. Inlet and exhaust pipes of solar water heater insulation water tank, 10. Air vent, 11. Insulation and constant pressure automatic replenishment, water outlet tank, 12. Floating ball, 13. Insulation and constant pressure automatic replenishment, water outlet tank intake and exhaust Pipe, 14, siphon pipe ridge, 15, siphon pipe mouth, 16, siphon hot water pipe, 17, solar water heater thermal insulation water tank, 18, heat resistance water inlet connection pipe, 19, drainage, sewage discharge connection pipe, 20, drainage, sewage discharge valve, 21, Hot water valve, 22, shower.

Detailed ways

In the accompanying drawings, (1) is a water inlet valve, and the heat preservation constant pressure automatic replenishment, water outlet tank intake and exhaust pipe (13) is located at the top of the heat preservation constant pressure automatic replenishment, water inlet tank (11), and the solar water heater insulation water tank inlet Exhaust pipe (9) is located at the top of solar water heater thermal insulation water tank (17). When closing the upper water pipe emptying valve (2), drainage, sewage valve (20) and hot water valve (21), and opening the water inlet valve (1), tap water enters the float valve (12) by the upper water pipe (4), and passes through The float valve mouth (5) injects into the heat resistance water inlet connection pipe (18) and flows into the bottom of the solar water heater insulation water tank (17). With the continuous injection of water, the water level continues to rise to the hot water connecting pipe (3), and then the ring pipe formed between the heat-resistant water inlet connecting pipe (18) and the hot water connecting pipe (3) returns to the heat preservation constant pressure automatic water replenishment , In the water outlet tank (11), the water level continues to rise until the floating ball (12) floats, and the end face sealing large flow floating ball valve (7) is closed. At this time, the initial hydration is achieved. At this time, close the water inlet valve (1), you can open the upper water pipe emptying valve (2) and the hot water valve (21), and the double pipes are emptied. When the siphon hot water pipe (16) was empty, the hot water valve (21) was opened, and the heat preservation constant pressure automatically replenished water, and when the water level in the water outlet tank (11) dropped to the siphon pipe mouth (15), the siphon hot water pipe (16) and The atmosphere is connected, and the siphon hot water pipe (16) is emptied; when the upper water pipe (4) is emptied, the heat preservation constant pressure automatically replenishes water, and when the water level in the water outlet tank (11) drops to the float valve mouth (5), due to the vent ( 10), the upper water pipe (4) communicates with the atmosphere, and the upper water pipe (4) is emptied. When using hot water, close the drain valve (2) of the upper water pipe, open the water inlet valve (1), and the cold water will enter the thermal insulation water tank of the solar water heater ( 17) Push the hot water in it through the hot water connecting pipe (3) into the thermal insulation constant pressure automatic water supply and outlet tank (11). When the water level exceeds the siphon ridge (14), the hot water has been emptied. Pipe (16) flows out from shower (22) for use. And at this moment, the end face sealing large flow ball float valve (7) promptly automatically adjusts to keep the constant pressure replenishing water. [When closing the water inlet valve (1) and opening the drainage and blowdown valve (20), the solar water heater can be used for falling water type operation, and the solar water heater insulation water tank (17) can be discharged. ] After emptying, because the siphon mouth (15) is lower than the space volume in the system between the potential difference between the siphon ridges (14) (referring to the automatic water replenishment of the heat preservation constant pressure, the water outlet tank (11) and the solar water heater insulation water tank (17 ) is evacuated volume.) The water storage capacity is equal to or slightly greater than the water volume that the water in the solar water heater insulation water tank (17) heats up and expands throughout the day, so when the siphon hot water pipe (16) and the upper water pipe (4) are emptied Finally, there will be no overflowing water entering the pipe, ensuring that the double pipes will not be blocked by freezing, and ensuring the normal operation of the solar water heater throughout the year. Thereby realized the utility model "top-type constant-pressure top-water type double-pipe evacuation antifreeze water inlet and outlet device".

Claims (3)

1, a kind of " formula constant voltage top, top ability of swimming double pipe evacuation and anti-freezing Inlet and outlet water device ", it is characterized in that: be provided with the moisturizing of insulation automatic constant-pressure, water tank (11), the moisturizing of insulation automatic constant-pressure, be provided with end face seal large flow ball float valve (7) in the water tank (11), be with the thermal resistance water inlet outside the ball float valve nozzle (5) and take over (18), the thermal resistance water inlet is taken over (18) top and is provided with blow vent (10), the thermal resistance water inlet is taken over (18) and is passed the bottom of hot water communicating pipe (3) always stretching into heat-preserving water tank for solar water heater (17), heat-preserving water tank for solar water heater (17) top is provided with siphon hot-water line (16), and heat-preserving water tank for solar water heater (17) bottom, side is provided with draining, blowdown connection (19), draining, blowoff valve (20).

2, " formula constant voltage top, top ability of swimming double pipe evacuation and anti-freezing Inlet and outlet water device " according to claim 1 is characterized in that: the siphon nozzle (15) of siphon hot-water line (16) places in insulation constant voltage automatic water supplement, the water tank (11).

3, " formula constant voltage top, top ability of swimming double pipe evacuation and anti-freezing Inlet and outlet water device " according to claim 1 and 2, it is characterized in that: draining, blowdown connection (19) are connected with siphon hot-water line (16) through draining, blowoff valve (20).

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