Gas purifier having pressure responsive switch as end of life detector
AssigneeSaes Getters S.P.A.
InventorsMarco Succi, Carolina Solcia
Life of this patent
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Abstract
A gas purifier for impure gas having an end of life detector. The purifier has: A. a housing; and B. an impurity-sorbing material packed within the housing. The impurity-sorbing material has the property of reacting with impurities in the impure gas. This reacting causes expansion of the impurity-sorbing material; and C. an impure gas inlet; and D. a pure gas outlet; and E. a pressure responsive electrical switch within the housing. The position of the switch is responsive to expansion of the impurity-sorbing material; and F. An indicator outside the housing to indicate the position of the switch.
Claims11
A gas purifier for impurity-containing gas having an end of life detector, said gas purifier comprising:
- A. a housing;
- and
- B. an impurity-sorbing material packed within the housing wherein said impurity-sorbing material has the property of reacting with impurities in an impurity-containing gas wherein the reacting causes expansion of the impurity-sorbing material;
- and
- C. an impurity-containing gas inlet;
- and
- D. a purified gas outlet;
- and
- E. a pressure responsive electrical switch within the housing, wherein the position of said switch is responsive to expansion of the impurity-sorbing material;
- and
- F. means outside the housing to determine the position of the switch.
A gas purifier for impurity-containing gas having an end of life detector, said purifier comprising:
- A. A gas-tight electrically-conductive housing;
- and
- B. an impurity-sorbing material packed within the housing and completely filing the housing leading only passages for the impurity-containing gas wherein said impurity-sorbing material has the property of reacting with impurities in the impurity-containing gas wherein the reacting causes expansion of the impurity-sorbing material;
- and
- C. an impurity-contains gas inlet for feeding impure gas to the housing:
- and
- D. a purified gas outlet for removing purified gas from the housing;
- and
- E. a pressure responsive electrical switch within the housing, wherein the switch is closed in response to expansion of the impurity-sorbing material;
- and
- F. a light which lights when the switch is closed thus indicating the end of life of the impurity-sorbing material.
A gas purifier for impure gas having an end of life detector, said purifier comprising:
- A. A gas-tight electrically-conductive housing;
- and
- B. an impurity-sorbing material packed within the housing and completely filing the housing leaving only passages for an impure gas wherein said impurity-sorbing material has the property of reacting with impurities in the impure gas wherein the reacting causes expansion of the impurity-sorbing material;
- and
- C. an unpure gas inlet for feeding impure gas to the housing;
- and
- D. a pure gas outlet for removing purified gas from the housing;
- and
- E. a pressure responsive electrical switch within the housing wherein the switch comprises one contact in the form of a rod surrounded by another contact in the form of a crushable casing, wherein the switch is closed in response to expansion of the impurity-sorbing material which crushes the crushable casing causing the crushable casing to contact the rod thereby closing the switch;
- and
- F. A light which lights when the switch is closed thus indicating the end of life of the impurity-sorbing material
A gas purifier for impurity-containing gas having an end of life detector, said gas purifier comprising:
- A. a housing;
- and
- B. an impurity-sorbing material packed within the housing reacting with impurities in an impurity-containing gas wherein the reacting causes expansion of the impurity-sorbing material;
- and
- C. an impurity-containing gas inlet;
- and
- D. a purified gas outlet;
- and
- E. a pressure-responsive electrical switch within the housing;
- wherein the switch comprises one contact surrounded by another contact which is a crushable casing;
- wherein the switch is closed in response to expansion of the impurity-sorbing material which crushes the crushable casing causing the crushable casing to contact the rod thereby closing the switch;
- and
- F. means outside the housing to determine the position of the switch.
Dependencies are inferred from the claim text.