Matsushita Electric Industrial Co., Ltd.

Yasuo Kidouchi

Hiroaki Yonekubo

Yasukiyo Ueda

Fumikazu Shiba

Yukio Nagaoka

Munehiko Tokumoto

A hot-water and cold-water mixing device is provided wherein a hot-water side valve element and a cold-water side valve element are provided for regulating the respective flow rates of hot and cold water flows. The valve elements are constructed so as to possess a temperature regulating function exercised by varying the hot-water to cold-water mixing ratio depending on a biasing force, and also an automatic pressure regulating function to automatically accommodate any sudden pressure changes. The water mixing device of the foregoing construction is compact in size and is capable of adjusting the final water temperature reliably and speedily.

Hot-water and cold-water mixing device

In a first hot water supply system, when water supply is required to be stopped, a temperature of supplied water is moved to a given temperature. The water supply is stopped after the temperature of the supplied water moves to the given temperature. In a hot water supply system according to another aspect of the invention, one of a plurality of outlets is selected and water is directed toward the selected outlet. When the selected outlet is required to be changed to another of the outlets, a temperature of the water is changed to a given temperature. The selected outlet is changed to another of the outlets after the water temperature changes to the given temperature.

Hot water supply system

A hot water supply system includes an arrangement for adjusting a temperature of water. A plurality of outlets are connected to water supplied objects. A change-over valve selects one of the outlets and supplies the water to the selected outlet. An outlet setting unit determines a target outlet selected from the outlets. A temperature setting unit determines a target temperature. A control unit controls the change-over valve and the temperature adjusting means in accordance with the target outlet and the target temperature.

A mixing valve apparatus provides a pressure balancing valve which has fins on their valve members and is forced to rotate by hot- and cold-water flows, two valve means for controlling flows of hot and cold water, a temperature sensor and a flow rate sensor. The valve means are shifted by respective electric driving means which are driven by a controller based on detected data of the temperature sensor and the flow rate sensor.

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Yamatokoriyama, Japan

Yasuo Kidouchi