초록 ▼

A self-contained device which continuously dispenses a packaged fluid is disclosed. The device is particularly suited for applications where several months may lapse before performance is manually initiated, after which a consistent steady flow is required for an extended period until the packaged f

A self-contained device which continuously dispenses a packaged fluid is disclosed. The device is particularly suited for applications where several months may lapse before performance is manually initiated, after which a consistent steady flow is required for an extended period until the packaged fluid is exhausted. The device is particularly suited for applications where ease of fabrication is important. The device utilizes an electrochemicalIy-generated gas, such as oxygen or nitrogen, to pressurize the packaged fluid to dispense it. Oxygen can be electrochemically released from a solid anode material of the general form AxOy as A ions migrate across a suitable ion-conducting electrolyte. Alternatively, nitrogen can be the pressurizing gas wherein it is electrochemically released from a solid, anode material of the general form A′ab2, where R is a halogen, is reduced to R-, or solid material, R′, where R′is a group VIB element other than oxygen is reduced to R′-2, or solid material CRx, is reduced to C+XR-. The released gas, oxygen or nitrogen, pressurizes a chamber resulting in fluid contained in a flexible bladder within the chamber to be forced through an outlet. Depending on the selection of anode and cathode materials, the device will be self driven or else will require a battery to provide a driving force.

대표청구항 ▼

A solid state, battery driven, fluid dispensing micropump comprising: an electrolyte comprising of an ion transport material selected from the class of materials which transport A cations or A′cations; a solid anode material of the general form AxOy or A′ab2y/x as A ions migrate across said ion cond

A solid state, battery driven, fluid dispensing micropump comprising: an electrolyte comprising of an ion transport material selected from the class of materials which transport A cations or A′cations; a solid anode material of the general form AxOy or A′ab2y/x as A ions migrate across said ion conducting electrolyte, or as oxygen is released from solid anode ions migrate across said solid ion conducting electrolyte; wherein A′is a cation of oxidation state 3b/a1 to 3 and y is 1 to 4, a is 1 to 3 and b1 to 3; a solid cathode material, said cathode material comprising a halogen ionizable to a minus one valence state or a compound consisting of carbon and halogen ionizable to a mixture of carbon and halogen with a valence of minus one state or a Group VIB substance ionizable to a minus two valence state, or where the migrating cations are reduced to elemental state at the cathode; a fluid containing chamber having a fluid discharge outlet; and duct means providing gas communication between said anode compartment and said fluid containing chamber.