Abstract: A high-temperature generator having a high durability and reliability is disclosed. The generator comprises a double shell type furnace body defining a combustion chamber and a liquid chamber surrounding the combustion chamber. A burner is arranged at a front end of the combustion chamber for generating high temperature gas within the combustion chamber. A smoke tube assembly including a plurality of smoke tubes is arranged in the liquid chamber aligned along a longitudinal direction of the furnace body. The rear end of the smoke tube opens to the combustion chamber. A rear wall having a double-wall configuration is provided with an aperture arranged to face the rear end of the smoke tube assembly, and the aperture is covered with a cover plate detachably mounted to the rear wall.

Abstract: In a film forming vessel, a substrate destined to carry on the surface thereof a thin film to be formed and a magnetron sputtering source integrally composed of an electric field supply means and a main magnetic field supply means for forming magnetron plasma in the neighborhood of the target and concurrently serving as a target holder for retaining a target in place are disposed as opposed to each other. An electromagnet as an auxiliary magnetic field supply means for decreasing the spatially dispersed amount of magnetron plasma in the neighborhood of the surface of the substrate is also laid out in the film forming vessel. A thin film of compound, for example, is formed on the substrate, with the spatially dispersed amount of magnetron plasma in the neighborhood of the surface of the substrate decreased as described above. As a result, the thin film of excellent quality is formed with high repeatability on a large surface area.

Abstract: A double effect absorption cold or hot water generating machine comprises an absorber A, a low temperature generator GL, a condenser C, a high temperature heat exchanger XH and a low temperature heat exchanger XL, a bypass circuit 20 having a cool/warm switching valve V.sub.1 for directing refrigerant gas from a high temperature generator GH directly to an evaporator E, and a bypass circuit 21 having a cool/warm switching valve V.sub.2 for directing refrigerant liquid from the evaporator directly to a diluted solution circulating system. A high head pump PH is disposed in the solution path between the absorber and the high temperature generator and a low head pump PL is disposed in the solution path between the absorber and the low temperature generator so that the high and low head pumps are driven during a cooling operation, and the high head pump is driven and the low head pump is stopped during a warming operation.

Abstract: A magnetoresistance effect type head comprises a magnetoresistance effect film having a pair of leads connected thereto and possessing a magnetic field responding part and a pair of upper and lower shield layers having a magnetoresistance effect type head satisfies the relations, W.sub.s <W.sub.r and T.sub.r <W.sub.r, wherein W.sub.s stands for the width of the surface of the upper shield layer facing the magnetoresistance effect film, W.sub.r for the distance between the pair of leads, and T.sub.r for the width of the magnetic field responding part of the magnetoresistance effect film. The magnetic field responding part of the magnetoresistance effect film is formed as of the remainder of the MR film region whose magnetic moment is fixed outside the end part of the upper shield layer facing the MA film. The magnetic field responding part is otherwise formed of a protruding part of the magnetoresistance effect film extended in the direction of the surface facing the medium.

Abstract: The present invention provides a single effect or double effect absorption refrigerating machine comprising an absorber, an evaporator, a generator, a condenser, a heat exchanger, a solution pump and a refrigerant pump and wherein the absorber (A), evaporator (E), generator (G) and condenser (C) are disposed within a single housing in such a manner that the absorber (A) is disposed at a lower portion of the housing, the evaporator (E) is disposed aside and above the absorber (A), the condenser (C) is disposed above the absorber (A), and the generator (G) is disposed above the condenser (C), and further wherein a refrigerant gas passage (2) extending from the evaporator (E) to the absorber (A) and a refrigerant gas passage (1) extending from the generator (G) to the condenser (C) are provided between the evaporator (E) and the generator (G).

Abstract: An ice thermal storage refrigerator unit includes a brine path consisting essentially of a refrigerator, an ice thermal storage tank, a water heat exchanger, a brine pump, and control valves, which are connected by piping, and a cold water path consisting essentially of the water heat exchanger, a cooling load, and a cold water pump, which are connected by piping, so that brine is cooled in the refrigerator, and water in the ice thermal storage tank is frozen by the brine, thereby storing heat, and when heat is to be discharged, the brine is cooled by heat of fusion of the ice in the ice thermal storage tank, and the brine is introduced into the water heat exchanger to cool cold water, thereby taking out a cooling capacity.

Abstract: An absorption refrigerating machine comprising an absorber A, an evaporator E, a generator GH, GL, a condenser C, a heat exchanger XH, XL, and solution circuits 1, 2, etc. and refrigerant circuits 10, 11, etc. for connecting the elements. A concentrated solution is directed from the generators to the absorber A through a solution spray pump P.sub.3 which is provided with a controller 15 for controlling number of revolutions of the pump on the basis of a signal representative of a level of refrigerant liquid detected by a sensor 14 or concentration of solution so as to effect circulation of the refrigerant solution safely and efficiently. The absorption refrigerating machine can be a double effect absorption refrigerating machine wherein a refrigerant gas generated in a high temperature generator GH is used as a heat source of a low temperature generator GL.

Abstract: A double effect absorption refrigerating machine wherein a refrigerant vapor generated at a high temperature generator GH is used as a heat source of a low temperature generator GL, comprising a liquid level detecting heat exchanger XC for detecting a level of liquid at an outlet of a high temperature generator GH, which does not require any moving parts and air-tight and/or liquid-tight seal portions, with the result that reliable detection of the liquid level can be achieved indefinitely. The liquid level detecting heat exchanger XC comprises an effective heat transfer area variable according to a level of liquid in a solution piping which connects an outlet portion of the high temperature generator GH and the high temperature heat exchanger XH.

Abstract: In a regenerator for an absorption refrigerating machine which uses combustion gas as a heat source, the regenerator comprises a plurality of drum shells provided in a body casing of the regenerator, each drum shell has a solution inlet provided in a shell part of the drum shell, a solution outlet having an overflow structure and provided in the shell part at a position lower than the solution inlet, a vapor outlet provided in the shell part at a position higher than the solution inlet, a multiplicity of heat transfer fins provided on an outer periphery of a shell part of the drum shell and a circulation guide provided along an inner periphery of the shell part, the plurality of drum shells may be arranged in a side by side parallel and/or in an up and down series relationship to increase the capacity of the regenerator by proportional design.

Abstract: A compact generator for an absorption refrigerating machine that uses combustion gas as a heat source, which enables stable heating. The generator 1 has a dilute solution inlet 3, a solution outlet 4, and a vapor outlet 5. A multiplicity of heat transfer fins 6 are provided on the outer periphery of a drum shell 2 of the generator. A circulation guide 7 is provided along the inner periphery of the drum shell. Openings are respectively provided in the bottom and top of the circulation guide 7. The solution outlet 4 has an overflow weir 10. The vapor outlet 5 has a downwardly facing opening 11 inside the can of the generator. The dilute solution inlet 3 is provided with a mixing chamber 20 which is separated from the solution in the drum shell of the generator and where the solution in the drum shell and dilute solution from the dilute solution inlet mix with each other.

Abstract: The cooling circuit of an internal combustion engine cooling system wherein the coolant is allowed to boil and the vapor used as a vehicle for removing heat from said engine is equipped with an external reservoir and arranged so that the amount of liquid coolant in the cooling circuit of the system can be varied in a manner which both assists in controlling the boiling point of the coolant and prevents the development of negative pressures which invite the invasion of non-condensible matter such as atmospheric air.

Abstract: An improvement in apparatus for cleaning heat exchanger tubes wherein each tube has chambers at its opposite ends for capturing a tube cleaning element, such as a brush, which is adapted to move in opposite directions through the tube upon reversing the direction of flow of heat exchange fluid therethrough. The improvement comprises apparatus for detachably mounting the chambers to the ends of the respective tubes including a holder plate having openings formed therethrough at locations corresponding to locations of the ends of the heat exchanger tubes.

Abstract: In a refrigerator of a compression type or an absorption type, including a condenser and an evaporator, an apparatus for cleaning condenser tubes in which a cleaning brush movably mounted in each tube is moved through the tube by reversing a flow of cooling fluid therethrough so that the inner wall of the tube can be cleaned by the moving cleaning brush. Switching means switches from a temperature control means which controls refrigeration capacity depending upon temperature of a cooling and heating medium within the evaporator during the refrigeration operation, to control by pressure restriction means which restricts the pressure within the condenser to not exceed a predetermined value, before the flow of the cooling fluid in the tube is changed for cleaning the tube.

Abstract: An improvement in apparatus for cleaning heat exchanger tubes wherein each tube has chambers at its opposite ends for capturing a tube cleaning element, such as a brush, which is adapted to move in opposite directions through the tube upon reversing the direction of flow of heat exchange fluid therethrough. The improvement comprises apparatus for detachably mounting the chambers to the ends of the respective tubes including a holder plate having openings formed therethrough at locations corresponding to locations of the ends of the heat exchanger tubes.

Abstract: An absorption refrigeration system incorporating a novel solution flow control is disclosed. The solution flow control includes a sensor, preferably in the form of a float which senses the level of the solution in the absorber of the system. The signal from the level sensor is utilized to position a valve for controlling the flow of weak solution in such a manner that the solution flow increases/decreases as the level of the solution in the absorber decreases/increases. The solution control not only provides improved efficiency of the refrigeration system but also protects the system from the risk of crystallization of the solution. In one embodiment, a compact solution control is fully enclosed by an air-tight shell of the absorber and comprises a float, a rod mechanically and drivingly coupling the float with a solution valve so that the buoyancy of the float directly positions the valve. This arrangement does not need to meet the requirement of having an air tight structure and assures a long life in use.

Abstract: An absorption refrigerating system is provided wherein the total circulation flow rate of a diluted solution (absorbing liquid) by pumps is adjustable according to the measured change in the refrigerating load so that the flow rate of the diluted solution is kept at desirable levels to balance with changing refrigerating load.

Abstract: A double effect absorption refrigerating system having improved thermal efficiency is provided wherein a solution concentrated by a high pressure generator is, after being used to raise the temperature of a weak solution fed to the high pressure generator and before being fed into a low pressure generator, heated with heat energy transferred thereto from a refrigerant passed through a tube within the low pressure generator.

Abstract: A double effect absorption system having improved thermal efficiency is provided wherein a part of a weak solution fed from an absorber to a high pressure or first generator is bypassed to a second generator and the bypassed solution is transferred with the heat energy from refrigerant passed through a tube within a low pressure or second generator.