CN200993495Y - Side type constant pressure water jacking type double-pipe emptying anti-freezing water inlet and outlet device - Google Patents

Abstract

A "side-type constant pressure top water type double-pipe emptying antifreeze water inlet and outlet device" is characterized in that: an end-face sealed large-flow float valve is provided in a heat-insulating constant pressure water supply and outlet tank, a heat-resistant pipe is provided on the outer cover of the float valve mouth, a vent is provided on the upper part of the heat-resistant pipe, and a water inlet pipe is connected to the lower part, and an inlet and outlet tee is provided at the bottom of the side of the heat-insulating water tank of the solar water heater, one of which is connected to the water inlet pipe, and the other is connected to the corresponding part of the middle part of the siphon hot water pipe. The siphon pipe mouth and the siphon pipe ridge of the siphon hot water pipe are placed in a heat-insulating constant pressure automatic water supply and outlet tank. 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 use of the solar water heater in cold seasons 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

Side 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 antifreezing of a solar water heater, and provides a "side-type constant-pressure top water type double-pipe emptying and antifreezing 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 "side-type constant pressure top water type double-pipe emptying and anti-freezing 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 side of the existing water-falling solar water heater insulation water tank. The water tank is equipped with an end-face-sealed large-flow float valve (the valve nozzle casing at the lower part of the valve is provided with a vent tee and a vent port. The valve is a newly designed end-face-sealed large-flow float valve, and the buoyancy of the float only needs to overcome The friction force of the valve body itself is relatively small and relatively constant, and is not affected by water pressure. Therefore, the floating ball can be designed to be relatively small, so the volume of the water replenishment and water outlet tanks can be made quite small and beautiful, and It can ensure that the water flow requirements of different floors are met, and it is not affected by the height of the floor.), the float valve mouth is covered with a heat-resistant connecting pipe, the upper part of the heat-resistant connecting pipe is provided with a vent, and the lower port of the heat-resistant connecting pipe is connected with a water inlet. The bottom of the side of the thermal water tank of the solar water heater is provided with an inlet and outlet tee, and the water inlet connecting pipe is connected with one of the outlets of the inlet and outlet tee. A siphon hot water pipe is provided, and the siphon mouth and siphon ridge of the siphon hot water pipe are placed in the heat preservation constant pressure automatic water replenishment and water outlet tank. The other port of the inlet and drain tee is connected to the corresponding part of the middle part of the siphon hot water pipe, and the connection is provided with drainage and sewage valves. (when this valve is opened, it can be used for sewage discharge, and it can also be operated and used by the existing water-falling type solar water heater operation mode, except that this valve is in a closed state). The device maintains constant pressure and automatically replenishes water. The lower part of one side of the water outlet box is connected with the upper part of the side of the solar water heater heat preservation water tank by a hot water communication pipe; 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 thermal insulation water tank of the solar water heater is full of water, the water in the thermal insulation water tank will flow back to the thermal insulation constant pressure automatic water replenishment and water outlet tank through the hot water connecting pipe. As the water level continues to increase, the floating ball will gradually be floated Up to close 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 drain 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 heat resistance water inlet connection 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. 1. Out of the water tank, when the water level exceeds the siphon ridge, the hot water will flow out from the emptied siphon for use, thus solving the practical problem of needing to put cold water before using 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 "the water inlet and outlet device for side-type constant pressure top water type double pipe evacuation antifreeze" of the utility model is 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, thermal insulation sleeve, 4, water inlet connection, 5, upper water pipe, 6, siphon nozzle, 7, siphon ridge, 8, heat resistance connection, 9 , Floating ball, 10, Floating ball valve nozzle, 11, Ventilation tee, 12, End face sealing large flow floating ball valve, 13, Air vent, 14, Insulation constant pressure automatic replenishment, water outlet tank, 15, Insulation constant pressure automatic replenishment, outlet Water tank intake and exhaust pipes, 16, solar water heater insulation water tank intake and exhaust pipes, 17, hot water connecting pipes, 18, siphon hot water pipes, 19, solar water heater insulation water tanks, 20, drainage, sewage valves, 21, water inlet and drainage three Tong, 22, hot water valve, 23, shower.

Detailed ways

In the accompanying drawings, (1) is a water inlet valve, and the heat preservation constant pressure automatic water replenishment, water outlet tank intake and exhaust pipe (15) is located at the top of the heat preservation constant pressure automatic water replenishment, water inlet tank (14), and the solar water heater heat preservation water tank inlet Exhaust pipe (16) is located at the top of solar water heater insulation water tank (19). When the upper water pipe emptying valve (2), drain valve (20) and hot water valve (22) are closed, and the water inlet valve (1) is opened, the tap water enters the float valve (12) from the upper water pipe (5) and passes through the floating valve. The ball valve nozzle (10) injects into the heat-resisting connecting pipe (8) and flows through the water inlet connecting pipe (4), the water inlet and drain tee (21) and enters the solar water heater insulation water tank (19). With the continuous injection of water, the water level continues to rise to the hot water connecting pipe (17), and then returns to the thermal insulation constant pressure automatic water replenishment, water outlet tank (14), the water level continues to rise until the floating ball (9) floats, close the end seal High flow float valve (12). 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 (22), and the double pipes are emptied. When the siphon hot water pipe (18) was empty, the hot water valve (22) was opened, and when the water level in the heat preservation constant pressure and the water outlet tank (14) dropped to the siphon mouth (6), the siphon hot water pipe (18) and The atmosphere is connected, and the siphon hot water pipe (18) is emptied; when the upper water pipe (5) was emptied, the heat preservation constant pressure automatically replenished water, and when the water level in the water outlet tank (14) dropped to the float valve mouth (10), due to the air vent ( 13) effect, the upper water pipe (5) communicates with the atmosphere, and the upper water pipe (5) 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 enters from the end-face-sealed large-flow float valve (12) through the heat-resistant connecting pipe (8) and the water inlet connecting pipe (4) The solar water heater insulation water tank (19) pushes the hot water therein through the hot water connecting pipe (17) into the heat preservation constant pressure automatic water replenishment and water outlet tank (14). When the water level exceeds the siphon ridge (7), the hot water has been discharged Empty siphon hot water pipe (18) flows out from shower (23) and uses. And at this moment, the end face sealing large flow ball float valve (12) promptly automatically adjusts to keep the constant pressure replenishing water. [When closing water inlet valve (1), when opening drainage, blowdown valve (20), solar water heater can be used as falling water type operation, and can carry out blowdown to solar water heater insulation water tank (19). ] After emptying, since the siphon mouth (6) is lower than the space volume in the system between the potential difference between the siphon ridges (7) (referring to the automatic water replenishment of the heat preservation constant pressure, the water outlet tank (14) and the solar water heater insulation water tank (19 ) 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 insulated water tank (19) heats up and expands throughout the day, so when the siphon hot water pipe (18) and the upper water pipe (5) 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 " side type constant pressure top water type double-pipe evacuation antifreezing water inlet and outlet device ".

Claims (3)

1, a kind of " side formula constant voltage top ability of swimming double pipe evacuation and anti-freezing Inlet and outlet water device ", it is characterized in that: be provided with end face seal large flow ball float valve (12) in insulation constant pressure making up water, the water tank (14), the outer thermal resistance that is with of ball float valve nozzle (10) is taken over (8), thermal resistance is taken over (8) top and is provided with blow vent (13), thermal resistance is taken over (8) end opening and is connected to into water adapter (4), heat-preserving water tank for solar water heater (19) side bottom is provided with into water draining tee (21), and water inlet is taken over (4) and advanced wherein being connected flatly of water draining tee (21).

2, " side formula constant voltage top ability of swimming double pipe evacuation and anti-freezing Inlet and outlet water device " according to claim 1, it is characterized in that: be provided with siphon hot-water line (18), the siphon nozzle (6) of siphon hot-water line (18), siphon pipe ridge (7) place in insulation constant voltage automatic water supplement, the water tank (14).

3, " side formula constant voltage 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: another mouthful that advances water draining tee (21) is connected with the corresponding section, middle part of siphon hot-water line (18), and the junction is provided with draining, blowoff valve (20).

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