US 2009/0151795 A1Published application

Ice tray with water level detecting device

OwnerShih-Hsien HSUinventor

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Abstract

An ice tray with water level detecting device includes an ice trench and a water level detecting device for detecting the water level of the water in the ice trench. The water level detecting device includes a radio frequency detecting device and a parameter setting unit. The radio frequency detecting device emits a radio frequency wave to the ice tray and the water and receives the reflection wave from the ice tray or the water. Here, the radio frequency detecting device has a decision level for deciding the strength of the reflection wave, so as to output a stop signal to stop the water supplying schedule. And, the parameter setting unit can alter the decision level for changing the water level of the ice tray. Therefore, through the structure described above, the water amount in the ice tray can be detected and controlled in an effective way.

Claims16

Dependent claims

An ice tray with water level detecting device, comprising at least an ice trench for accommodating water to wait for being frozen, wherein the ice tray is supplied by a water inflow mechanism, which is connected to a control unit, the control unit outputs a water inflow signal to initiate the water inflow mechanism for supplying water to the ice tray, and the ice tray further comprises a water level detecting device, the water level detecting device comprising:

a radio frequency detecting device, mounted on the ice tray, having a radio frequency emitting portion for emitting a radio frequency wave to the ice tray and the water therein, and a reflection receiving portion for receiving a reflection wave from the ice tray and the water, wherein the radio frequency detecting device further have a decision level for deciding the strength of the reflection wave, so as to produce a stop signal to the control unit for stopping water supplying as the decision level is achieved;
and
a parameter setting unit, for setting an emitting parameter of the radio frequency emitting portion, so as to adjust the decision level.

Dependencies are inferred from the claim text.