Photosynthesis active radiation blocking solar pool cover and method of making the pool cover

Abstract

A swimming pool cover which retards algae growth. Two films are sealed together so as to create air pockets which allow the pool cover to float on the surface of the water. One or both of the films contains a material which prevents the passage of light in those wavelengths which are necessary for algae growth, especially 350-500 nm and 600-700 nm. The material may either be a dye which has a color associated with that wavelength or may be a transparent material which removes those wavelengths of light. The remaining wavelengths of light are allowed to pass through the cover in order to heat the water but not cause algae growth. Additionally, the cover can be made by mixing light absorbing material into the plastic before making the film for the pool cover or may be made by applying a layer of light absorbing material to the film.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] This invention relates generally to solar cover for covering a swimming pool and more particularly to a floating solar cover for a pool which blocks radiation necessary for algae growth. The invention further relates to a method for making a floating solar cover for a pool which blocks radiation necessary for algae growth. [0003] 2. Description of the Background [0004] Swimming pools are enjoyed in many homes as a source of recreation and as a form of exercise. However, unless a pool heater is provided or a structure built around the pool, it is difficult to utilize the pool in seasons other than summer. In order to extend the usable time of the pool, swimming pool covers have been developed to prevent the loss of heat when not in use. In particular, one type of pool cover involves a plastic device with air pockets which cause the cover to float on the surface. The air pockets then act as insulation and prevent evap...

AI Technical Summary

Benefits of technology

[0008] The present invention provides a swimming pool cover which helps prevent algae growth.

[0009] The present invention further provides a cover for a body of water which reduces photosynthesis active radiation.

[0010] The present invention further provides a heat-retaining swimming pool cover which filters out photosynthesis active radiation to reduce algae growth.

[0013] These objects are achieved by providing a pool cover using two plastic films which are sealed together to form air pockets so that the cover floats and which also contains a radiation absorbent material within the plastic which removes the wavelengths of radiation necessary for algae growth.

Problems solved by technology

However, unless a pool heater is provided or a structure built around the pool, it is difficult to utilize the pool in seasons other than summer.

While these covers are very effective for preventing heat loss and even helping to warm the pool and thus providing added enjoyment for the user in an extended period of use during the year, it is not helpful for other facets of pool maintenance.

However, this has not been applied to algae suppression.

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