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9032747 Multi-mode air conditioner with refrigerant cycle and heat medium cycle  
Obtained is an air-conditioning apparatus that is capable of saving energy. A pressure in a passage of the second refrigerant flow switching device in which a refrigerant from an outdoor unit...
9027358 Vehicle heat pump system  
A vehicle heat pump system includes a compressor, a first valve coupled to an outlet of the compressor, a cooling circuit between the first valve and the inlet of the compressor, a heating circuit...
9021820 Optimization of an overall heating capacity of an air conditioning system  
The invention relates to a control process for an air conditioning system. The air conditioning system comprises a thermal loop (1) used as a heat pump and an electrical heating device (2). The...
9015960 Drying of water damaged buildings  
A drying apparatus for temporary location within a damp or waterlogged room is disclosed. The apparatus includes sensors to sense the level of temperature and humidity within the room, a heater to...
9003817 Air-conditioning hot-water supply system, and heat pump unit  
A discharged warm/cold heat of a refrigerant circuit is effectively utilized in order to attain high energy efficiency. Appropriate operation control is executed when a hot-water supplying...
8991199 Heat pump system  
A heat pump system includes: a heat-source-side refrigerant circuit having a heat-source-side compressor, a first usage-side heat exchanger operable as a radiator of heat-source-side refrigerant,...
8984901 Heat pump system  
A heat pump system includes: a heat-source-side refrigerant circuit having a heat-source-side compressor, a first usage-side heat exchanger operable as a radiator of heat-source-side refrigerant,...
8973387 Vehicular air conditioning system  
A vehicular air conditioning system capable of suppressing the power consumption of a refrigerating cycle is disclosed. The vehicular air conditioning system comprises a refrigerating cycle...
8950204 Heat pump interoperating hot water feeding apparatus  
A heat pump interoperating hot water feeding apparatus is provided that may determine whether to activate only the first coolant circulation circuit along which the first coolant is circulated or...
8950203 Heat pump device  
A device for heating and cooling, respectively, includes a heat pump (1), a first heat exchanger (2) arranged at a first side of the heat pump (1), which first heat exchanger (2) is thermally...
8950202 Heat pump system  
A heat pump system includes a refrigerant circuit and a controller. In a heating operation, the usage-side expansion valve is controlled so that a degree of subcooling of outlet refrigerant of the...
8943848 Integrated ventilation unit  
An integrated ventilation unit configured to provide ventilation and conditioned air to an indoor space may include a heat pump system, an energy recovery device and a control unit. The heat pump...
8919139 Air conditioning apparatus  
An air conditioning apparatus includes a refrigerant circuit, an operation controlling device and a liquid refrigerant accumulation determining device. The refrigerant circuit has an accumulator....
8910489 Heat pump system for vehicle  
A heat pump system for a vehicle includes a water cooled condenser that uses a coolant as a heat exchange media and uses waste heat generated from a motor and an electronic device to improve...
8904815 Heating installation and heating method  
A heating installation is provided with a first circuit (K1) containing a first medium,a second circuit (K2) containing a second medium,a first heat pump (2) arranged in the first circuit (K1) for...
8850837 Heat pump type speed heating apparatus  
A heat pump type speed heating apparatus, comprising: a cooling cycle circuit to circulate a first refrigerant to operate air conditioning, the cooling cycle circuit including a compressor, an...
8820106 Air conditioning apparatus  
A heat source-side refrigerant circuit A including a compressor 11, an outdoor heat exchanger 13, a first refrigerant branch portion 21 connected to the compressor 11, a second refrigerant branch...
8813784 Flow path switching valve  
A flow path switching valve arranged to rotate a main valve with an auxiliary valve to switch a cooling state and a heating state, which provides a reliable operation of the main valve by...
8769974 Heat pump system  
A heat pump system includes a heat source unit, a first usage unit, and a second usage unit. The heat source unit has a heat-source-side compressor, a heat-source-side heat exchanger, a...
8763419 Motor-operated valve and refrigeration cycle using the same  
A motor-operated valve configured to control the flow rate during a normal flow and pass the fluid so as to minimize pressure loss during a reverse flow, and a refrigeration cycle using the same,...
8756943 Refrigerant charge management in a heat pump water heater  
Heat pumps that heat or cool a space and that also heat water, refrigerant management systems for such heat pumps, methods of managing refrigerant charge, and methods for heating and cooling a...
8607855 Cooling system for a motor vehicle  
The invention relates to an air-conditioning system for a motor-driven vehicle, having a refrigerant circuit (20) with a plurality of heat exchangers (4, 24) through which a refrigerant can be...
8607582 Controlling chilled state of a cargo  
A refrigeration system for a container for refrigerating chilled cargo includes a compressor, a condenser, and an evaporator connected in series. The system further includes a heater and sensors...
8549867 Heat pump control system using passive defrost  
A heat pump system includes a controller and a closed system that includes a condensing heat exchanger coil, an evaporating heat exchanger coil, a refrigerant and a compressor. The compressor is...
8516841 Heating and air conditioning unit for an automotive vehicle  
A heating and air conditioning device 20 for an automotive vehicle, including a refrigerant circuit 4 in which a refrigerant circulates between three distinctive units 6, 10, 14 exchanging with...
8424333 Air conditioner  
An air conditioner is provided. The air conditioner includes: an outdoor heat exchange unit in which a plurality of refrigerant tubes are disposed to be separated in a plurality of columns in a...
8417386 System and method for defrost of an HVAC system  
A system and a method are provided for monitoring a condition and selectively executing a certification defrost algorithm for a heating, ventilation, and air conditioning (HVAC) system in response...
8393172 Heat pump drying machine  
An heat pump drying machine has a normal dry mode (e.g., compression ratio is equal to or greater than 3) for operating a compressor at a predetermined dry operation frequency and an energy saving...
8347644 Air conditioning system  
An air conditioning system includes a first circulation module and a second circulation module. Two circulation modules are joined by a heat exchanger. The first circulation is a modular...
8290628 Air conditioner and method for controlling the same  
An air conditioner and an associated control method are provided in which performance of one or more indoor units may be adapted so as to minimize power consumption while maintaining...
8171747 Refrigeration device  
A refrigeration device includes a compression mechanism, a radiator, a first expansion mechanism (15), a liquid receiver (16), a second expansion mechanism, an evaporator, a temperature detector,...
8157184 Expansion valve, heat pump type refrigeration cycle apparatus, and air handling unit  
A first expansion valve is provided in an outdoor unit, and a second expansion valve is provided in an indoor unit. A pipe line connects a first joint pipe of the first expansion valve and a...
8157183 Expansion valve, heat pump type refrigeration cycle apparatus, and air handling unit  
A first expansion valve is provided in an outdoor unit, and a second expansion valve is provided in an indoor unit. A pipe line connects a first joint pipe of the first expansion valve and a...
RE43312 Refrigeration cycle apparatus  
It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range. A...
8151583 Expansion valve control system and method for air conditioning apparatus  
A vapor compression air conditioning system includes a motor operated expansion valve and control unit including sensors for determining the amount of superheat of the working fluid at or adjacent...
8117858 Air conditioner  
An air conditioner is switchable between a cooling mode and a heating mode using highly pressurized hot gas in a refrigerant cycle. During the cooling mode, a controller controls an input electric...
8109105 Refrigerating air conditioning system, method of controlling operation of refrigerating air conditioning system, and method of controlling amount of refrigerant in refrigerating air conditioning system  
In a refrigerating air conditioning system using refrigerant such as CO2 used in a supercritical area, a highly efficient refrigerating air conditioning system is provided by adjusting the amount...
8104299 Air conditioner  
An air conditioner includes an indoor heat exchanger (radiator) and a controller. The radiator causes heat radiation to be performed with respect to air from a supercritical refrigerant during...
8091377 Simultaneous heating/cooling multi air conditioner  
A heat pump capable of performing heating and cooling simultaneously is provided. The heat pump includes a compressor, indoor devices that heat or cool an indoor space, outdoor heat exchangers,...
8079405 Air conditioning apparatus for vehicle  
An air conditioning apparatus has a blower, a unit case, a cooling heat exchanger and a heating heat exchanger. The heat exchangers are disposed in the unit case such that ends thereof are...
8047014 Humidity control system  
A humidity control system (10) is disclosed which includes a refrigerant circuit (60). The refrigerant circuit (60) includes first and second absorbent-supported heat exchangers (61, 62) and...
8047011 Refrigeration system  
In concurrent operation of performing a refrigeration cycle in which an outdoor heat exchanger (22) functions as a condenser, and at least one of a plurality of indoor heat exchangers (31, 41, 51)...
8028535 System for efficient fluid depressurisation  
The present invention relates to a system for depressurisation of high pressure pipeline fluids. The system may provide for net power generation without the pressurised fluid undergoing...
8020394 Air conditioner and control method thereof  
Disclosed here is an air conditioner and the control method thereof comprising an outdoor unit having an outdoor heat exchanger for the heat exchanging of the outdoor air and refrigerant; at least...
7987679 Air conditioning apparatus  
By studying or storing refrigerating cycle characteristics of an air conditioning apparatus at the normal time and comparing them with refrigerating cycle characteristics acquired from the air...
7984617 Method of controlling compressor for refrigerator and apparatus thereof  
A method of controlling compressor for refrigerator and apparatus thereof are disclosed to control an operation of the compressor by optimum efficiency by changing freezing capacity of the...
7963117 DC-powered HVAC system  
An HVAC system for a motorized vehicle or vessel is provided that includes a variable-speed compressor, a variable-speed condenser fan and a variable-speed evaporator fan. The HVAC system further...
7937960 Humidity controller utilizing the pressure differential sensors for varying the compressor capacity  
A humidity controller includes a differential pressure detection means (93, 97) for detecting a difference between high voltage and low voltage in a refrigeration cycle of a refrigerant circuit...
7903414 Air volume control module for vehicular air conditioning apparatus  
An air volume control module for use with a vehicular air conditioning apparatus includes a circuit board including a control circuit for controlling the rotational speed of the blower of the...
7895850 Modulating proportioning reversing valve  
A method of operating a reversible heat pump system includes steps of sensing an outdoor air temperature with a first sensor and sensing at least one condition of an outdoor heat exchanger coil...