Thermostatically controlled cold and hot water mixer
OwnerRoland Gloorinventor
Life of this patent
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Abstract
A thermostatically controlled mixer of cold and hot water is disclosed which includes separate assemblies for controlling the temperature of the mixed water and the delivered volume of the mixed water. The assemblies include pairs of ceramic discs sealingly mounted against each other with ports extending therethrough which, in alignment, establish flow communication from a respective inlet to the mixing chamber. A thermally responsive element in the mixing chamber regulates the flow of water from the hot water inlet to the mixing chamber.
Claims7
An improved thermostatically controlled mixer of cold and hot water comprising an elongated housing with an elongated mixing chamber for mixing the cold and hot water, a cold water inlet for passing cold water to the chamber, a hot water inlet for passing hot water to the chamber, a mixed water outlet connected to the chamber for passing a flow of the mixed cold and hot water from the chamber, a first control cartridge mounted to the housing for regulating the flow of cold water into the mixed chamber and for regulating the flow of mixed water from the mixing chamber, wherein said first cartridge comprises a first pair of ceramic discs rotatably mounted relative to and sealingly against each other, each disc of said first pair of ceramic discs having a port extending therethrough to establish fluid communication from the cold water inlet to the mixing chamber upon alignment thereof, said first cartridge further including a second pair of ceramic discs rotatably mounted relative to and sealingly against each other, said second pair of ceramic discs being mounted between the mixing chamber and the mixed water outlet, each disc of said second pair of ceramic discs having a port extending therethrough to establish fluid communication from the mixing chamber to said mixed water outlet upon alignment thereof, and a second cartridge mounted to the housing including a thermally responsive element mounted in the mixing chamber and a slide valve connected to said thermally responsive element and slidably mounted in said second cartridge for regulating the flow of hot water from the hot water inlet to the mixing chamber responsive to the operation of said thermal element.
A thermostatically controlled mixer of cold and hot water, comprising a tubular housing having a chamber for mixing the water, a separate cold water inlet and hot water inlet to the chamber, a mixed water outlet from the chamber, a first cartridge mounted in said housing having two pairs of ceramic discs, each pair of discs mounted adjacent each other for controlling a supply of water, each disc of each pair of ceramic discs being rotatable relative to each other and each ceramic disk having ports for the passage of water therethrough, a first pair of said ceramic disks being operative to control a cold water supply from said cold water inlet to said mixing chamber and a second pair of said ceramic discs being operative to control a mixed water supply from said mixing chamber to said mixed water outlet, a second cartridge in said tubular housing coaxially mounted relative to said first cartridge, a thermally responsive element in said cartridge and a slide valve slidably mounted in said second cartridge and operatively connected to said thermally responsive element for controlling a flow of hot water from said hot water inlet to said mixing chamber.
Dependencies are inferred from the claim text.