Waterproof breathable valve

Abstract

The invention discloses a waterproof air-permeable valve. The waterproof air-permeable valve comprises a valve body and a valve cover mounted on the valve body, wherein a chamber used for mounting an air-permeable membrane is arranged in the valve body; a valve plate is mounted in the chamber; an airflow channel is formed between the valve plate and the inner wall of the valve body; the air-permeable membrane is mounted on the valve plate; a seal ring is also arranged in the valve body; the top of the seal ring presses against the bottom of the valve plate; an elastic part is arranged at the top of the valve plate and is pressed between the valve plate and the valve cover; the chamber is filled with pressure air; the valve plate can be pushed by the pressure air so as to enable the pressure air to enter the airflow channel and discharge the pressure air by overcoming the elastic force of the elastic part. Due to the adoption of the structure, the air-permeable membrane normally discharges the air; when the inner pressure and the outer pressure of a module cannot be met by discharging the air via the waterproof air-permeable membrane separately; the valve plate is pushed by the pressure air so as to enable the pressure air to enter the airflow channel and discharge the pressure air by overcoming the elastic force of the elastic part, so that the overpressure protection and automatic dust removal function can be achieved.

Description

technical field [0001] The invention relates to a breathable valve for a concentrated energy photovoltaic power generation module, in particular to a waterproof breathable valve for balancing the internal and external air pressure of a concentrated energy photovoltaic power generation module. Background technique [0002] Concentrated photovoltaic power generation has widely used waterproof and breathable valves to balance the pressure changes caused by the thermal expansion and contraction of the air in the sealed module caused by changes in ambient temperature (four seasons, day and night weather). At present, the waterproof and breathable valves used have waterproof, dustproof and breathable functions. Its structure is welded or pressed by a plastic or metal shell and a waterproof and breathable membrane. Its protective function and air permeability depend on the function of the waterproof and breathable membrane. , quality and working area. [0003] With the development...

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Problems solved by technology

[0003] With the development of the photovoltaic industry, some technical problems have also appeared. For example, after a period of installation and use of the concentrated photovoltaic power generation module, lens glass protrusions and depressions appeared, which affected normal work and had to be maintained and repaired. The reason, to a large extent, is that the dust on the breathable membrane of the waterproof and breathable valve affects the air permeability, which reduces the air flow of the waterproof and breathable valve, and cannot quickly balance the internal and external air pressure of the module.

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