Solar water heater water tank with automatic balance heat insulation valve

Abstract

The invention provides a solar water heater water tank with an automatic balance heat insulation valve. The automatic balance heat insulation valve is arranged in a ventilation port of the water tank, the valve body is flaky or consists of a fixed piece and a moving piece between which a movement gap is formed; or the valve body consists of the moving piece and a connector for the moving piece and the inner wall of the ventilation port, and the movement gap is formed between the moving piece and the inner wall of the ventilation port. The heat insulation valve of the invention has an excellent function of automatic balance and the degree of opening / closing of the moving piece of the heat insulation valve is controlled by pressure difference; and self-regulation on flow section area of theventilation port can be realized. The operation of the water tank for water feeding and discharging is smooth, and when no pressure difference presents in the water tank, the heat insulation valve isunder an original static state and the pressure inside and outside the water tank is balanced only by micro gap, thus the formation of convection mass can be effectively prevented, the convectional heat exchange loss at the ventilation port is reduced significantly, and the heat insulation effect of the water tank is improved; the valve is simple in structure and low in manufacturing difficulty, and has low material consumption and strong practicability.

Description

technical field [0001] The invention relates to a solar water heater water storage tank, in particular to a solar water heater water tank provided with an automatic balancing heat preservation valve. Background technique [0002] Solar water heater water tanks usually have dual functions of water storage and heat preservation. In the national standard, the heat loss coefficient of the water tank is used as an index for the heat preservation performance of the water tank. The heat loss coefficient is also an important indicator to measure the overall quality of solar water heaters. one. For this reason, for a long time, scientific and technical personnel in the industry have paid great attention to improving the thermal insulation performance of the water tank. In addition to setting an inner liner for the water tank and filling the insulation material between the outer shell and the inner liner of the water tank, a cover or valve is also added to the vent of the water tank. ...

AI Technical Summary

Problems solved by technology

This technical means has effectively improved the thermal insulation performance of the water tank, but the function of the air vent has been lost by adding a cover to the air vent, and a new problem of poor operation of water filling and draining of the water tank has arisen; adding a valve to the air vent, For example: patent 200920269760.7 discloses a solar water heater air inlet and outlet automatic opening and closing heat preservation valve. Its technical solution is to use an inlet and outlet two-way one-way valve to balance the pressure difference inside and outside the water tank without affecting the smooth water supply and discharge of the water tank. , when the pressure is balanced, the two one-way valves are closed at the same time, thereby preventing the hot air in the water tank from dissipating outwards and achieving the purpose of heat preservation

However, the application of this valve still has the following disadvantages: complex structure, many combined parts, poor reliability, troublesome maintenance, and the flow area of ​​the vent cannot be adjusted, so there is still a need for improvement

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