Abstract: A method of cooling a dressed carcass of a slaughtered animal halved along the backbone thereof while transferring the dressed carcass in a cooling chamber is provided, with which reduction in process yield in the cooling process due to evaporation of water from the dressed carcass is suppressed to a minimum, meat juice dripping together with water does not occur when cutting the dressed carcass, the cooling period of time is reduced, energy is saved in cooling process, initial cost is reduced, and productivity is improved.

Abstract: A liquid injection type screw compressor in which, in a compression stroke of an working space formed by male and female rotors, liquids such as oil or water is prevented from leaking from the high pressure working space to a gas inlet side, suction resistance of gas sucked from the gas inlet to a rotor casing is reduced to improve volumetric efficiency, and shape forming of the casing is simplified. The liquid injection screw compressor has the male and female rotor pair of screw rotors, the rotor casing (1a, 1b) having a bore for receiving the rotors, a gas suction opening and a gas outlet that are provided in both end sections of the casing and communicate with the bore, and a lip section (4) projected from a bore surface (2) positioned more on the upstream side than a suction seal line (5) of the casing in order to prevent a back flow of the liquid from the bore surface toward the gas inlet side.

Abstract: A CO2 cooling and heating apparatus and method permit simultaneous production of high-temperature heat source and low-temperature heat source having a temperature difference therebetween. The apparatus/method uses CO2 (carbon dioxide) as a refrigerant, and has a first refrigerating cycle circuit where the refrigerant is compressed to a supercritical zone and then decompressed via an expansion device to a pressure/temperature level of the CO2 triple point or below to thereby attain evaporation. The apparatus can include multistage compressors, intermediate cooler disposed in a first refrigerant flow path between a condenser and the expansion device.

Abstract: To shorten a long aging time required for meat processing and reducing the viable cell count of a carcass before being cooked, an electric stimulus is imparted by applying an AC voltage via from electrode needles to at least the neck and legs of the meat carcass. The AC voltage is turned on for a time Ton and then turned off for a time Toff, and the application of the voltage is repeated a predetermined number of cycles. The Ton period is not longer than the Toff period, although the first Ton period can be longer than the Toff period. The voltage is not higher than 100V, and the frequency is not higher than the commercial frequency (maximum, 60 Hz). The aging effect is improved by stimulating the entire meat carcass electrically from at most three points.

Abstract: A heat pump employing CO2 as refrigerant and utilizing heat source of natural water, e.g. well water, ground water, river water or sea water, effectively is applied to an air conditioning system in order to enhance heating/hot water supplying capacity and refrigeration capacity without requiring a large scale appurtenant facilities.

Abstract: An ammonia/CO2 refrigerating system having a liquid pump for feeding the liquid CO2 cooled in a brine cooler by the utilization of the vaporization latent heat of ammonia in an ammonia refrigeration cycle to a cooler, which comprises a liquid receiving vessel 4 for receiving a CO2 brine cooled in a brine cooler 3, a liquid pump 5 capable of changing the rate of the feed of a liquid, a rising piping 90 provided between the liquid pump 5 and a cooler 6, and a communication pipe 100 for communicating the top of the riser pipe 90 with the CO2 gas phase in the liquid receiving vessel 4, wherein the discharge pressure of the liquid pump 5 is set so as for the CO2 recovered form the cooler 3 or the liquid receiver 4 in the state of a liquid or a gas-liquid mixture, and the level of the rise in the rising piping 90 is set at a level being the same as or higher than the highest storage level for the CO2 brine in the liquid receiving vessel 4.

Abstract: The present invention is featured in that a plurality of transfer pieces composing a transfer conveyer are connected to be able to be piled vertically spirally, the transfer pieces having pairs of spacer members each of which is formed to have an inside-part and an outside part continuing to the inside-part and offsetting outward in lateral direction perpendicular to the transfer direction, an engaging part having a contact face extending in the direction parallel to the transfer direction being formed at the upper and lower end part of the outside-part of the spacer member; the transfer pieces can be piled such that vertically adjacent spacer members contact to each other with the contact face of the upper and lower engaging part; an inside chain and an outside chain are provided for allowing the inner side and outer side spacer members to ride on respective chain to advance the transfer conveyer; and the inside chain and outside chain are driven by a single motor.

Abstract: A method of supplying lubrication oil to a two-stage screw compressor is disclosed in which a low-pressure stage screw compressor and a high-pressure stage screw compressor are integrally constructed. A compression space is formed by a male rotor and a female rotor, and operation gas is fed for compression to the compression space. The method prevents degradation of volumetric efficiency caused by return of lubrication oil, coming from a bearing and a shaft sealing device, to the low-pressure stage screw compressor, and as a result, refrigeration capacity is improved and the amount of the lubrication oil is reduced.

Abstract: Liquid nitrogen is filled in a low temperature vessel; an ejector that sucks liquid nitrogen by blowing a cooling agent (liquid or gas) such as low temperature helium gas or liquid helium of pressure higher than in the space within the vessel is disposed in the vessel; the liquid nitrogen blown with the cooling agent is cooled by the cooling agent to become fine particles of solid nitrogen which fall down; and gas in a space of the vessel is discharged out of the vessel so as to maintain the pressure of the space higher than the atmospheric pressure. A gaseous phase of liquid nitrogen in an adiabatic vessel is depressurized to vaporize nitrogen in a liquid phase so that the temperature of the nitrogen reaches the triple point of nitrogen by lowering the temperature to thereby produce solid nitrogen by keeping the temperature at the triple point, and that the produced solid nitrogen is transformed into slush by stirring the content of the adiabatic vessel.

Abstract: A meat dressing and boning method and a system thereof can dress and bone meat and carcass in short work-hours, while avoiding bacterial contamination. The system includes a clamp mechanism for holding a meat block with bones, a hanger connected to clamp mechanism and movably suspended from a support rail, and a guide rail or rails having a tubular or rod-like configuration for supporting the meat block positioned along and below the support rail. The hanger has at least two pivots to allow the meat block held by the clamp mechanism to rotate about at least first and second axes, which are perpendicular to each other. The meat and carcass can be broken up and boned while being moved along the support rail, with the swinging directions of hanger regulated by the guide rail or rails.

Abstract: An apparatus for producing a slush fluid wherein a liquid and solid particles are mixed together, comprising product tank (1) for storing the slush fluid (50) in its saturated condition; liquid nitrogen supply nozzle (10) provided at an upper part of the product tank (1); and compressor (15) for evacuating the interior of the product tank, which apparatus is adapted to spray a liquid in microparticulate form through the liquid nitrogen supply nozzle (10) into the product tank evacuated by the compressor (15) and to solidify the liquid particles by evaporative latent heat, thereby forming solid nitrogen (51).

Abstract: An oil refrigeration screw compressor being applied to a refrigeration system etc., in which the problem of strength reduction of a bearing material under high temperatures and that of lifetime reduction of the bearing material due to viscosity lowering of lubricant are solved. A lubricant supply system to a compressor body is divided into a bearing oil supply system for supplying lubricant to each bearing of the compressor body at low pressure and into a temperature control oil supply system for supplying lubricant into the compressor body at high pressure. The bearing oil supply system is a closed circuit oil supply system comprising an oil supply tank, an oil cooler, and an oil supply pump, and the temperature control oil supply system is a closed circuit oil supply system comprising an oil separator and an oil cooler.

Abstract: A method and an apparatus for separating thigh meat and oyster meat from the thighbone can automatically separate thigh meat and oyster meat without detecting the boundary of the white cap at an end of the thighbone and the meat including thigh meat and oyster meat. The apparatus includes a cutter that is inserted into the detected boundary part in the final operation of deboning a thigh-with-bone of an edible beast and bird. The apparatus has a clamper, a guide-with-a-groove device, and a guide-with-a-cutter device downstream of the guide-with-a-groove device provided on the transfer line of the clamper. Both guide devices are provided such that the open end side of each guide device, which is Y-shaped is directed toward upstream of transfer of the clamper.

Abstract: A wing separation apparatus and method for separating wings from a breast part of poultry having its breast bone removed can handle a wide variety of poultry sizes. The breast part is supported at its left and right arm pits on a pair of shafts with the left and right arm pits positioned substantially perpendicular to the shafts. Left and right guides positioned adjacent to the shafts position the tendons at the arm pits for cutting. The guides maintain the posture of the wings and gradually applies pressure against the breast meat to position the tendons for cutting. Left and right rotary blades disposed adjacent to the guides cut the tendon near the guides, thereby separating the wings from the breast meat.

Abstract: A flooded evaporator is provided which can remove floating mist more exactly resulting in that the refrigerant mist is prevented from being sucked into the compressor, and with which heat transfer between the medium to be cooled and refrigerant liquid is improved.

Abstract: A low temperature zone forming system by convection type thermal stratification in which the low temperature zone separated from polluted outside air is formed on a movable or fixed table for handling commodities such as marine products while maintaining freshness thereof during the period from carrying-in in the whole sale market, during selling by auction, until shipment of the commodities from the market, comprising an upward-open case body (30) mounted on a chassis (30a), a separate brine chilling unit (30b), and a brine piping (30c), the upward-open case body (30) further comprising a roller conveyer (35) installed in the center part of the floor of the case body (30), cooling flat plates each of which is installed adjacent to the roller conveyer (35), and cooling flat plates are installed on the inside faces of both laterally longitudinal side walls.

Abstract: A deboning method and a deboning apparatus is provided whereby a meat block at the humerus part having a part of the scapula remaining therein, which corresponds to the shoulder part of a back split block of an animal meat (for example, beef, pork, horse meat, goat meat or poultry meat), can be completely automatically deboned after a simple pretreatment by human hand.

Abstract: A heat pump employing CO2 as refrigerant and utilizing heat source of natural water, e.g. well water, ground water, river water or sea water, effectively is applied to an air conditioning system in order to enhance heating/hot water supplying capacity and refrigeration capacity without requiring a large scale appurtenant facilities.

Abstract: In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by using an indoor heat exchanger, an outdoor heat exchanger, and a compressor, and combining them with refrigerant piping, the thermo-siphon chiller refrigerator for use in cold districts of the invention has a compressor (10) additionally installed to a natural refrigerant-circulation refrigerating system comprising an outdoor heat exchanger (12), an indoor heat exchanger (11) located at a position lower than that of the outer heat exchanger (12), and an expansion valve (18). When the refrigerating capacity of the natural refrigerant-circulation refrigerating system is not sufficient, the additional compressor (10) is operated to perform a forced refrigerant-circulation cycle i.e. a vapor compression refrigerating cycle.

Abstract: Cryogenic liquefying/refrigerating method and system, wherein temperature of gas-to-be-liquefied at the inlet of the compressor for compressing the gas is reduced by cooling the gas discharged from the compressor using a high-efficiency chemical refrigerating machine and vapor compression refrigerating machine before the gas is introduced to a multiple stage heat exchanger thereby reducing power input to the compressor and improving liquefying/refrigerating efficiency.