Abstract: A shovel keeping mechanism in an ice making machine provided with an ice storage bin placed under an ice making mechanism to store ice cubes dropped therefrom. The shovel keeping mechanism is composed of a pair of parallel support rail portions provided on the bottom surface of a component member located at a lowermost portion of the ice making mechanism and extended in a fore-and-aft direction of the ice storage bin, and a shovel holder detachably assembled with the parallel support rail portions to retain an ice shovel inserted therein from the front of the ice storage bin.

Abstract: In a cooking apparatus such as a fryer or the like for frying food having an oil tank filled therein with cooking oil to be maintained in heated condition, a humidity detector is provided to detect an amount of vapor rising from the food after the food has been thrown into the heated cooking oil. An electric circuit is provided to decide frying completion of the food when the detected amount of vapor becomes smaller than a predetermined amount of vapor after maintained larger than the predetermined amount of vapor.

Abstract: In a cooking apparatus such as a fryer or the like for frying food having an oil tank filled therein with cooking oil to be maintained in heated condition, a humidity detector is provided to detect an amount of vapor rising from the food after the food has been thrown into the heated cooking oil. An electric circuit is provided to decide frying completion of the food when the detected amount of vapor becomes smaller than a predetermined amount of vapor after maintained larger than the predetermined amount of vapor, and an elapsed amount of time.

Abstract: In a cooking apparatus such as a fryer or the like for frying food having an oil tank filled therein with cooking oil to be maintained in heated condition, a humidity detector is provided to detect an amount of vapor rising from the food after the food has been thrown into the heated cooking oil. An electric circuit is provided to decide frying completion of the food when the detected amount of vapor becomes smaller than a predetermined amount of vapor after maintained larger than the predetermined amount of vapor.

Abstract: An ice making machine in which ice making water in a static or flowing condition is gradually frozen on the surface of an ice making plate cooled at an ice making cycle of the machine, wherein the surface of said ice making plate is made of synthetic resin or glass.

Abstract: An ice making machine includes a cooling vessel arranged to store an amount of liquid cooling medium and an amount of separation medium located above the cooling medium. A refrigeration mechanism is provided for refrigerating both the mediums in the cooling vessel, and a water supply system is provided for supplying fresh water in the form of water drops into the liquid cooling medium. The water drops are formed into ice balls while rising in the liquid cooling medium, and the formed ice balls are separated from the liquid cooling medium in the separation medium to be harvested. In this ice making machine, mercury is used as the liquid cooling medium, and hydrophobic liquid is used as the separation medium. The melting point of the separation medium is lower than that of the formed ice balls and the specific gravity of the separation medium is more than the formed ice balls and less than the mercury.

Abstract: A refrigeration system in an ice making machine has an evaporator coil connected at its inlet side to an outlet of a refrigeration compressor through a condensing coil and at its outlet side to an inlet of the compressor. An expansion valve is interposed between the condensing coil and the evaporator coil. A bypass line is connected in parallel with the condensing coil and the expansion valve. A solenoid valve is disposed within the bypass line to permit the flow of hot gas supplied therethrough from the compressor into the evaporator coil when it has been energized. The expansion valve is in the form of an expansion valve of the externally equalized type associated with an external equalizer pipe having an extremity connected to an intermediate portion of the evaporator coil between the inlet and outlet sides thereof. A thermostat bulb is located on a return line between the outlet side of the evaporator coil and the compressor.

Abstract: In a freezer machine having a refrigeration system in the form of a circulation circuit including a compressor, a condenser, an evaporator coil arranged for thermal exchange with a freezing receptacle, and a solenoid valve of the normally closed type disposed within a bypass circuit of the circulation circuit to supply therethrough the hot gas outflowing from the compressor directly into the evaporator coil when it has been energized, an electric control circuit for the freezer machine is designed to repeatedly measure a first predetermined period of time, for instance four hours, in a condition where said compressor is being deactivated, to measure a second predetermined period of time, for instance three minutes, upon each lapse of the first predetermined period of time and to activate the compressor for the second predetermined period of time upon each lapse of the first predetermined period of time and energize the solenoid valve in response to activation of the compressor.

Abstract: A refrigerant piping system for a refrigeration machine includes an injection pipe connected at one end thereof with the suction port of a compressor and at the other end with the outlet port of a condenser. The injection pipe is provided with a solenoid valve for suppressing a coolant from flowing into the compressor during a heating operation of the machine. By closing the solenoid valve during the heating operation, the liquid coolant is prevented from flowing into the compressor through the injection pipe.

Abstract: A refrigerating system for an ice making machine includes an external equalizer expansion valve having a pressure equalizing tube connected to an exit of an evaporator tube. A pressure adjusting pipe which becomes conductive only in deicing cycle is branched from the pressure equalizing tube and connected to the discharge side of a compressor. An on-off valve is installed in the pressure adjusting pipe and controllably communicated with a hot gas valve in a hot gas pipe so that both the valves are opened and closed simultaneously. Namely, when the hot gas valve is opened for carrying out the deicing cycle operation, the on-off valve of the pressure adjusting pipe is opened, while the expansion valve remains closed. In an ice making operation cycle during which the hot gas valve is closed, the on-off valve of the pressure adjusting pipe is also closed. Thus, the expansion valve is optimally opened and closed for adjusting the amount of the coolant supply.

Abstract: A refrigerating apparatus comprises a compressor, a condenser, an expansion valve and a evaporator which are interconnected serially through a pipeline to form a closed circulation circuit. A check valve allowing a coolant flow only toward the condenser is provided between the discharge port of the compressor and the condenser. A hot gas bypass circuit is connected at one end to a junction between the compressor and the check valve and at the other end to a junction between the expansion valve and the evaporator. The check valve serves to prevent backflow of coolant to the hot gas bypass circuit during the hot gas operation mode without hindering the flow of the coolant gas through the closed circulation circuit during the normal refrigerating operation.