초록 ▼

A heat recovery device is disclosed which is adapted for use in the drain conduit of standard shower installations having a hot water line, a cold water line, means for mixing water from both lines to deliver water at a suitable temperature to a shower head, and a drain conduit for disposing of wast

A heat recovery device is disclosed which is adapted for use in the drain conduit of standard shower installations having a hot water line, a cold water line, means for mixing water from both lines to deliver water at a suitable temperature to a shower head, and a drain conduit for disposing of waste water passing through the shower installation, the heat recovery device transferring heat from the waste water to cold water flowing to the cold water line. The heat recovery device has a first conduit connected into the drain conduit of the shower installation, and a second conduit connected into the cold water line leading into the shower installation and either wrapped around or inserted within the first conduit so that the second conduit is in operative heat transfer relationship with warm waste water passing through the first conduit, so that the incoming cold water is preheated by heat recovered from the waste water and transferred to the cold water.

대표청구항 ▼

[ I claim:] [3.] A heat recovery device adapted for use in the drain conduit of standard shower equipment installations having a hot water line, a cold water line, means for mixing water from both lines to deliver water at a suitable temperature to a shower head, and a drain conduit for disposing of

[ I claim:] [3.] A heat recovery device adapted for use in the drain conduit of standard shower equipment installations having a hot water line, a cold water line, means for mixing water from both lines to deliver water at a suitable temperature to a shower head, and a drain conduit for disposing of waste water passing through the shower installation, the heat recovery device transferring heat from the waste water to cold water flowing to the cold water line, said heat recovery device comprising:A. a section of generally tubular first conduit formed of a material having a relatively high degree of heat conductivity, said first conduit having an inlet end connected to an upstream portion of said drain conduit and an outlet end connected to a downstream portion of said drain conduit so that waste water passing through said drain conduit also passes through said first conduit, said inlet and outlet ends of said first conduit being connected to said upstream and downstream portions respectively of said drain conduit in a manner such that the major portion of said first conduit between said inlet and outlet ends thereof is disposed at a lower level than said upstream and downstream portions of said drain conduit so that said first conduit remains filled with water at all times and functions as a water trap, said major portion of said first conduit extending laterally from said upstream and downstream portions of said drain conduit so as to lie in an approximately horizontal plane, andB. conduit means connected into said cold water line of said shower equipment and being thermally operatively associated with said first conduit such that cold water passes through said conduit means while passing through said cold water line, said conduit means causing said cold water passing through said cold water line to be exposed to heat in said first conduit from waste water passing therethrough,whereby said remaining portion of said first conduit occupies less vertical space between said inlet and outlet ends thereof than if said remaining portion of said first conduit were disposed in the vertical plane passing through said upstream and downstream portions of said drain conduit.