초록 ▼

A deep fat fryer system includes a vat for holding a quantity of cooking medium. A tube or conduit is disposed between a position in the vat corresponding to a lower desired level of cooking medium in the vat and a blower for creating a vacuum in the tube. A pressure sensitive switch is disposed for

A deep fat fryer system includes a vat for holding a quantity of cooking medium. A tube or conduit is disposed between a position in the vat corresponding to a lower desired level of cooking medium in the vat and a blower for creating a vacuum in the tube. A pressure sensitive switch is disposed for sensing differences in pressure between the inside of the conduit and the outside of the conduit. The pressure sensitive switch provides an electrically detectable indication of when the difference in pressure between the inside of the conduit and the outside of the conduit is in excess of a predetermined difference in pressure indicative of cooking medium covering the end of the tube disposed in the vat.

대표청구항 ▼

[ Having described the preferred embodiment the invention is now claimed to be:] [22.] A fluid level sensor for sensing the level of a fluid in a vessel, comprising:a flow generating device for generating an air flow;a tube member having a first end in communication with the vessel for receiving sai

[ Having described the preferred embodiment the invention is now claimed to be:] [22.] A fluid level sensor for sensing the level of a fluid in a vessel, comprising:a flow generating device for generating an air flow;a tube member having a first end in communication with the vessel for receiving said fluid therein, and a second end disposed adjacent to said flow generating device, wherein said flow generating device modifies the pressure inside said tube; anda pressure sensitive switch operatively connected to said tube member for sensing a difference between the pressure inside said tube member and pressure outside said tube member, and for providing a signal when said sensed difference in pressure reaches a predetermined value.