JPS5810926Y2 - Wind power solar water heater - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to the structure of a solar water heater.

In conventional natural circulation solar water heaters, a hot water storage tank is connected to the top of the solar collector, and hot water is naturally circulated between the collector and the tank using the natural upward force of hot water heated within the collector. There are some that gradually warm up the water in the tank.

However, if hot water is circulated only by the natural upward force of hot water, the flow velocity within the collector is extremely slow, resulting in poor heat transfer efficiency between the collector wall surface and the water.

There are also devices that use electric power to forcefully circulate hot water between the collector and the tank, but in this case, electricity is consumed, which poses a problem in terms of energy conservation.

Therefore, the purpose of the present invention is to provide a solar water heater that increases the heat collection efficiency by forcing the circulation of hot water between the collector and the tank using wind power and increasing the flow velocity within the collector. be.

A further object of the present invention is to stop the forced circulation of hot water when heat collection by the collector cannot be expected, such as at night.

Examples will be described below with reference to the drawings.

An embodiment of the solar water heater according to the present invention, schematically shown in FIG. 1, includes a solar collector 1, a hot water storage tank 2 connected to the collector, and a wind turbine 3 mounted on the upper surface of the tank. I'm here.

The collector 1 is installed in an inclined state with the tank 2 at the bottom and the tank 2 at the top.

Water is supplied into the tank 2 through its population 4 from a tap or other water source.

The water introduced into the tank 2 also enters the wood pipe section 5 of the collector 1.

Further, the water level in the tank 2 is kept constant by a water utilization valve 7 driven by the vertical movement of the float 6.

The collector 1 is heated by sunlight and transmits the heat to the water in the water pipe section 5.

When the temperature of the water in the wood pipe section 5 rises, a flow of water as shown by the arrow occurs within the wood pipe section 5 based on the difference in water density, and water naturally circulates between the collector 1 and the tank 2.

In this way, the water in the tank 2 gradually becomes warmer. tank 2
The hot water inside can be freely taken out by gravity by opening the hot water supply valve 8.

When the water level in the tank 2 drops, the water control valve 7 automatically opens and water is replenished into the tank 2 through the inlet 4.

A screw 9 driven by the rotational force of the windmill 3 is provided inside the tank 2 .

This screw 9 is rotationally driven so as to urge the hot water in the tank 2 toward the inlet of the water pipe section 5 in the natural water circulation described above.

As a result, the circulation of hot water between the collector 1 and the tank 2 is promoted by the rotation of the screw 9, and the flow rate of hot water in the water pipe portion 5 increases, so that the heat collection efficiency is improved.

Further, temperature sensors 11 and 12 filled with working fluid are used to determine the temperature T1 in the collector 1 and the temperature T2 in the tank 2.
A differential temperature clutch 15 connected to these temperature sensors 11 and 12 via capillaries 13 and 14 is interposed in series in the power transmission path between the wind turbine 3 and the screw 9.

When Tl<T2, the power transmission path between the wind turbine 3 and the screw 9 is automatically disconnected by the operation of the differential temperature clutch 15, and the wind turbine 9 is stopped independently of the wind turbine 3.

As a result, the circulation of hot water is stopped when heat cannot be collected in the collector 1, such as at night, so that the thermal energy stored in the tank 2 is prevented from being dissipated from the collector 1 at night, etc.

As explained above using the embodiments, according to the wind-powered water heater of the present invention, the flow rate of hot water in the solar collector is increased by using wind power, so that energy problems may not occur. The heat collection efficiency has been improved without any problems, and the circulation of hot water between the collector and the hot water storage tank is stopped according to the temperature difference between the two.
It is also possible to prevent the accumulated thermal energy from dissipating at night.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram schematically showing an embodiment of the present invention. 1...Solar heat collector, 2...Hot water storage tank, 3...Windmill, 9...Screw, 11.12...Temperature sensor, 15...
・Differential temperature clutch.

Claims (1)

[Scope of utility model registration request] It includes a hot water storage tank and a solar collector having a water pipe section with an inlet and an outlet connected to a lower position in the tank, and the shape of the water pipe section allows natural circulation of hot water between the tank and the collector. In a solar water heater that is Wind power utilization including a screw that is energized in the same direction as the circulation, and a differential temperature clutch device that is provided between the wind turbine and the screw and operates according to the temperature difference between hot water in the collector and hot water in the tank. Solar water heater.