초록 ▼

An electric automatic water heating apparatus for drip type beverage, e.g., coffee makers has a housing provided with a reservoir composed of a material of low thermal conductivity arranged to supply water by gravity to a sealed heating chamber having an inlet communicating with the reservoir and an

An electric automatic water heating apparatus for drip type beverage, e.g., coffee makers has a housing provided with a reservoir composed of a material of low thermal conductivity arranged to supply water by gravity to a sealed heating chamber having an inlet communicating with the reservoir and an outlet for discharging heated water for use. The sealed heating chamber includes an open top, cup-shaped, metallic casting having an electric rod-type resistance heating element embedded therein, and a metallic cover member closing the open top of the casting for confining steam generated during heating to the heating chamber. The cover is secured to and forms a bottom surface portion of the reservoir exposed to the water in therein. The cover serves as a support for a bimetallic member which controls the flow of water through the inlet into the heating chamber in response to the temperature in the heating chamber. Seals are provided between the heating chamber and housing for blocking flow of steam or water from the heating chamber into the housing area containing electrical components.

대표청구항 ▼

An electric automatic water heating apparatus comprising: a housing having an area containing electrical components, a reservoir in said housing for receiving and holding water to be heated, said reservoir being composed of a material of low thermal conductivity, a sealed heating chamber in said hou

An electric automatic water heating apparatus comprising: a housing having an area containing electrical components, a reservoir in said housing for receiving and holding water to be heated, said reservoir being composed of a material of low thermal conductivity, a sealed heating chamber in said housing having a water inlet means in fluid communication with said reservoir for receiving water by gravity and an outlet for discharging heated water for use, said sealed heating chamber comprising an open tip heating member of high thermal conductivity for receiving and heating water from said reservoir, a heating element embedded in said high thermally conductive heating member, and a high thermal conductivity cover member secured to and covering the open top of said heating member and adapted to confine steam generated during heating to said sealed heating chamber, said cover member being secured to said reservoir, means for blocking the flow of steam or water from said sealed heating chamber into said housing area containing electrical components, said cover member having a first surface exposed to any water present in said reservoir and forming a bottom surface portion of said reservoir, said cover member including said water inlet means, and flow control means including a temperature sensing element for controlling the flow of water from said reservoir through said water inlet means into said sealed heating chamber in response to the sensed temperature in said sealed heating chamber.