Low temperature storage cabinet
AssigneeHoshizakidenki Kabushiki Kaisha
InventorsTsuyoshi Shima, Tomio Suyama, Toshiaki Hara
Life of this patent
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Abstract
A low temperature storage cabinet wherein a heater is embedded in an opening frame structure of the cabinet to prevent the occurrence of dewfall on a surface of the frame structure to be brought into contact with a door hinged to the cabinet body, and wherein operation of a compressor is controlled in accordance with an inside temperature of the cabinet to maintain the inside temperature of the cabinet at a predetermined value. In the storage cabinet, the heater is activated synchronously in response to operation of the compressor and is activated in accordance with outside humidity or inside temperature of the cabinet during stopping of the compressor.
Claims6
A low temperature storage cabinet including a heater embedded in an opening frame structure of the cabinet to prevent the occurrence of dewfall on a surface of the frame structure to be brought into contact with a door hinged to the cabinet body, and a compressor the operation of which is controlled in accordance with an inside temperature of the cabinet to maintain the inside temperature of the cabinet at a predetermined value,
- wherein the heater is activated synchronously in response to operation of the compressor and is deactivated in accordance with a decrease of outside humidity of the s cabinet during operation of the compressor, and
- wherein the heater is deactivated synchronously in response to stopping of the compressor and maintained in a deactivated condition during stopping of the compressor.
A low-temperature storage cabinet including a heater embedded in an opening frame structure of the cabinet to prevent the occurrence of dewfall on a surface of the frame structure to be brought into contact with a door hinged to the cabinet body, a compressor the operation of which is controlled in accordance with an inside temperature of the cabinet to maintain the inside temperature of the cabinet at a predetermined value, and a cooling fan the operation of which is controlled in response to operation of the compressor,
- wherein the storage cabinet includes an inside temperature sensor for detecting an inside temperature of the cabinet and control means for activating the heater synchronously in response to operation of the compressor and for deactivating the heater synchronously in response to stopping of the compressor and maintaining the heater in a deactivated condition during stopping of the compressor, and
- wherein said control means comprises means responsive to a detection signal from the inside temperature sensor for calculating an activation rate and time of the heater in relation to the inside temperature of the cabinet and for controlling activation of the heater at the calculated activation rate and time synchronously in response to operation of the cooling fan during stopping of the compressor.
A low-temperature storage cabinet including a heater embedded in an opening frame structure of the cabinet to prevent the occurrence of dewfall on a surface of the frame structure to be brought into contact with a door hinged to the cabinet body, and a compressor the operation of which is controlled in accordance with an inside temperature of the cabinet to maintain the inside temperature of the cabinet at a predetermined value,
- wherein the storage cabinet includes a humidity sensor for detecting outside humidity of the cabinet and control means for activating the heater synchronously in response to operation of the compressor and for deactivating the heater synchronously in response to stopping of the compressor and maintaining the heater in a deactivated condition during stopping of the compressor, and
- wherein said control means comprises means responsive to a detection signal from the humidity sensor for calculating an activation rate and time of the heater in relation to the outside humidity of the cabinet and for controlling activation of the heater at the calculated activation rate and time during operation of the compressor.
Dependencies are inferred from the claim text.