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WO/2008/032645 |
A refrigeration device in which, in a refrigerant circuit having a two-stage expansion mechanism, a sufficient degree of supercooling can be applied to refrigerant having passed a first expansion mechanism and the degree of superheating ...
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WO/2008/032558 |
A refrigeration device having a refrigerant circuit in which a compression mechanism, a radiator, a refrigerant cooling section, a first expansion mechanism, a liquid receiver, a second expansion mechanism, and an evaporator are connecte...
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WO/2008/032568 |
A refrigeration device having a refrigerant circuit in which a compressor, a radiator, a first expansion valve, a liquid receiver, a second expansion valve, and an evaporator are connected in sequence. In the refrigeration device, refrig...
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WO/2008/032581 |
A refrigeration device having a refrigerant circuit formed by sequentially connecting a compressor, a radiator, a first expansion valve, a liquid receiver, a second expansion valve, and an evaporator, in which the level of refrigerant li...
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WO/2008/029678 |
Provided is an air conditioner which can simplify conditions required for judging a suitable refrigerant quantity. A refrigerant circuit (10) performs cooling operation to have an outdoor heat exchanger (23) function as a condenser for a...
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WO/2008/026568 |
A refrigeration system employing carbon dioxide, or the like, as refrigerant of which the pulsation of pressure is reduced sufficiently. The refrigeration system (1) comprises a compression mechanism (11), radiators (13, 31), expansion m...
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WO/2008/026646 |
An air conditioner (1) has an expansion valve control device (41) for performing operation control including activation control of expansion valves (33a, 33b). When the expansion valves (33a, 33b) are opened from a minimum opening degree...
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WO/2008/026385 |
A lubricating oil composition for a compression refrigerator, which comprises the following components (1) to (6) each having a molecular weight of 150 to 5000 and a tertiary or quaternary carbon: (1) an alicyclic hydrocarbon; (2) a bran...
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WO/2008/024102 |
A refrigerant vapor compression system includes a first compression device and a second compression device disposed in a refrigerant circuit in series relationship with respect to refrigerant flow and an intercooler adapted to cool the r...
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WO/2008/023543 |
An air conditioner for a vehicle, having two or more evaporators (3, 4). The air conditioner has interior heat exchangers (5, 6) corresponding to the evaporators (3, 4), the first evaporator (3) is placed at a front part (8A) of the occu...
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WO/2008/023732 |
A novel highly pressure-resistant compact heat exchanger of plate type, in which fluid flow is improved. A large number of square metal plates (1) and metal corrugated fins (2) with substantially the same outer profile as the metal plate...
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WO/2008/019689 |
Transcritical refrigeration system (10) with a booster and a bypass valve, the system comprising a flow circuit and a high pressure compressor (20), the compressor output being connected to an input of a gas cooler (24) and having an out...
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WO/2008/019689 |
Transcritical refrigeration system (10) with a booster and a bypass valve, the system comprising a flow circuit and a high pressure compressor (20), the compressor output being connected to an input of a gas cooler (24) and having an out...
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WO/2008/018867 |
A refrigerant system is provided with tandem compressors. A tandem compressor arrangement includes at least two compressors operating in parallel and having at least one common manifold. A control may operate the compressors either simul...
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WO/2008/018862 |
A refrigerant system is provided with a pulse width modulation valve. A compressor temperature is monitored to prevent potential reliability problems and compressor failures due to an excessive temperature inside the compressor. A contro...
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WO/2008/018480 |
Provided is a coolant filling method in a refrigeration device using carbon dioxide as a coolant, which method can reduce the time required for coolant filling and the time required until operation is enabled after the coolant filling. T...
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WO/2008/017431 |
The invention describes a heat pump that can be used for example as a heating installation or as a cooling installation. The heat pump includes an evaporator (2), in which a fluid is continuously evaporated at low pressure, taking up hea...
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WO/2008/018381 |
An air conditioner (10) having a refrigeration device is provided with a controller (90). A heating control section (91) of the controller (90) heats a compressor (30) by conducting, in an open phase state, a current to an electric motor...
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WO/2008/018373 |
Provided is a method for cleaning an air conditioner, by which a quantity of remaining impurities is reduced without vacuumizing, in the case of using carbon dioxide as an operating coolant. The method is provided for cleaning the air co...
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WO/2008/018489 |
An air conditioner in which all the pressure pulsations generated in a compressor can be reduced both in cooling operation and in heating operation and in which a muffler has commonality. The air conditioner (1) has a refrigerant circuit...
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WO/2008/018078 |
A method of constructing self-powered air-conditioner comprises a convergent divergent nozzle where powered fan pushes air into said nozzle. While the pushed air accelerates toward the nozzle throat it becomes colder as air internal ener...
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WO/2008/016347 |
A compressor-valve modular design provides manufacturing simplicity, reduces applied cost, and improves quality and reliability of a refrigerant system. In this design, a valve is preferably an electronically controlled valve having a co...
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WO/2008/015965 |
An expansion type noise reduction device (30) is provided in a refrigerant circuit (10), on the inflow side of an expansion machine (22). In the refrigerant circuit (10), carbon dioxide is compressed up to level not less than a critical ...
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WO/2008/013092 |
A heat source unit having sealed compressors and forming an air conditioner using carbon dioxide as the refrigerant. The heat source unit (2) forms a refrigerant circuit (10) using the carbon dioxide as the refrigerant, and utilization u...
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WO/2008/013103 |
An air conditioning system capable of cooling and heating the inside of a room by switching between the cooling and heating and by using a refrigeration cycle performed by compressing refrigerant to a level not less than a critical press...
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WO/2008/013089 |
A quantity of a refrigerant dissolved in a refrigeration oil in a compressor is accurately grasped and whether a quantity of the refrigerant in a refrigerant circuit is suitable or not is highly accurately judged. An air conditioner (1) ...
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WO/2008/013105 |
A separate type air conditioner using carbon dioxide as the refrigerant sealed in the refrigerant circuit, in which an increase in the amount of consumption of sealed gas used for an air-tightness test performed in site installation work...
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WO/2008/013079 |
A pulsation absorption device (30) is provided in a refrigerant circuit (10) of a refrigeration device (1). In the pulsation absorption device (30), a piston (32) is received in a cylinder member (31), and a cylinder chamber is partition...
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WO/2008/013093 |
A quantity of a refrigerant in a compressor is accurately grasped and whether a quantity of the refrigerant in a refrigerant circuit is suitable or not is highly accurately judged, without adding a sensor and the like inside the compress...
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WO/2008/010988 |
A system includes a compressor and a compressor motor functioning in a refrigeration circuit. A sensor produces a signal indicative of one of current and power drawn by the motor and a liquid-line temperature sensor provides a signal ind...
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WO/2008/010519 |
In loading a refrigerant into a refrigeration device using CO2 as the refrigerant, the time of the refrigerant loading is reduced and the time after the loading until the refrigeration device is operable is reduced. A refrigerant loading...
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WO/2008/007694 |
Provided is a fin-and-tube type heat exchanger using a return bend pipe capable of improving the evaporation performance of the heat exchanger still better. This heat exchanger comprises a hair pin unit having a multiplicity of hair pin ...
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WO/2008/007586 |
An air conditioning control device facilitating narrowing down of factors of abnormality when an air conditioner has the abnormality. The control device (4) has a microcomputer (5) and memory (6). The microcomputer (5) performs an inspec...
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WO/2008/007657 |
A ventilating and air conditioning apparatus is provided with a circulating fan, which takes air from an air inlet opened in a first indoor space and blows out air from a blow out port opened in the first indoor space; a ventilating fan ...
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WO/2008/004621 |
In a cooling medium circuit (20), a compressor (21), an indoor radiation panel (23), a first expansion valve (24), an indoor air heat exchanger (25), a second expansion valve (26) and an outdoor air heat exchanger (27) are connected in o...
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WO/2008/004620 |
A heating apparatus having refrigerant circuit (20) including compressor (21), radiator (22) and evaporator (24) and hot water circuit (30) connected to the radiator (22) and including indoor radiant panel (32) and indoor air heat exchan...
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WO/2008/002048 |
Disclosed is an energy-saving high-efficiency refrigeration system having a refrigeration cycle comprising a compressor, a condenser, a receiver, a filter drier, a liquid-pipe electronic valve, an expansion valve, an evaporator, a gas-li...
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WO/2008/001525 |
A refrigerated container (1) where the temperature in a container (3) is controlled by a refrigeration unit (4) for circulating refrigerant by a compressor (11). The exit path of a condenser (12) is bifurcated into two routes. A bypass r...
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WO/2008/001667 |
A refrigeration device having a super cooling circuit (1a) for enhancing cooling ability and a main refrigerant circuit (1b) for cooling a target cooling space. Even if the refrigeration device is not in an overloaded condition, high pre...
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WO/2007/148727 |
A heat source-side circuit (14) includes a gas/liquid separator (35) for separating a coolant flowing from an expansion unit (31) into a liquid coolant and a gaseous coolant; and cooling means (36, 45, 53, 55) performing cooling operatio...
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WO/2007/143956 |
A thermodynamic method employs a refrigerant liquid that is immiscible to a motive liquid. The refrigerant vapor is compressed and condensed by the action of the motive liquid that comes in contact with the refrigerant vapor directly. Si...
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WO/2007/145627 |
Cooling is provided to the power electronics of a compressor speed control system by way of refrigerant that is routed from a refrigeration system, through the power electronics, and then back to the refrigeration system. The amount of r...
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WO/2007/142332 |
A refrigeration device (10) having a refrigerant circuit (11) in which a compressor (20), a heat radiator (14), an expander (30), and a cooler (15) are sequentially interconnected. The rotating shaft (22) of an electric motor is connecte...
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WO/2007/142619 |
A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant comprises a first compressor sub-unit having a first stage and a second stage, and a second compressor sub-unit in parallel with the first com...
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WO/2007/142009 |
A power conversion apparatus (1a) is provided with a matrix converter (11), reactors (L1-L3) and capacitors (C1-C3). The matrix converter (11) is provided with input terminals (111-113), output terminals (114-116) and bidirectional switc...
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WO/2007/142619 |
A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant comprises a first compressor sub-unit having a first stage and a second stage, and a second compressor sub-unit in parallel with the first com...
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WO/2007/139093 |
Provided is a freezing apparatus (1), which comprising first to third three compressors (11a, 11b and 11c) connected in parallel, and an oil separator for separating the freezer oil from the discharged coolant of the compressors (11a, 11...
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WO/2007/139137 |
Provided is a heat exchanger having improved heat exchanging performance. An indoor heat exchanger (6) permits heat to be dissipated from a supercritical CO2 cooling medium to air. The heat exchanger is provided with a plurality of plate...
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WO/2007/139087 |
An air conditioning system for eliminating uncomfortable feeling (draft feeling) produced when conditioned air strikes a human body directly, and ensuring comfortable feeling of heating. The air conditioning system (1) comprises an indoo...
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WO/2007/138877 |
A reciprocating compressor in which cylinder bores are formed and a muffler device is provided. The internal space of the muffler device is divided into at least two compartments by a partition wall. A cylindrical body, which allows the ...
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