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JP5570739B2 |
The opening control of a pressure reducing expansion valve 40 is performed only when the refrigerant pressure on the high-pressure side in an outdoor unit 10 is high during a cooling operation. The opening of the valve 40 is determined o...
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JP2014519006A |
A heat-pump, screw-compression, multi-connected central air conditioner comprises at least one compressor (1), multiple indoor units (45) connected in parallel, a liquid receiver (43), a gas-oil separator (22) and at least two condenser ...
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JP5553869B2 |
The invention includes a refrigerant circuit for a cooling operation and a heat pump operation. The refrigerant circuit has a high pressure area and a low pressure area, including at least one heat source/heat sink, a compressor, an expa...
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JP5552309B2 |
To provide an evaporator with a cold storage function capable of efficiently storing cold in a cold storage material. This evaporator with the cold storage function includes a plurality of flat hollow pipes 4 having refrigerant circulati...
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JP2014129960A |
To defrost a power supply device to prepare for next restart of operation even if it is detected that the power supply device is frosted during operation and the power supply device stops operating in a refrigeration device including a c...
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JP5544311B2 |
To quickly activate an indoor unit of a lower floor during warming even when a plurality of indoor units is connected to an outdoor unit and there is a level difference between the installing positions of the indoor units.The air conditi...
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JP2014126348A |
To prevent the high pressure of a refrigeration cycle from excessively rising in an operation in which refrigerant evaporated by absorbing heat from a heat storage medium is absorbed by a compressor via a bypass channel.An air conditione...
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JP2014126349A |
To simplify a refrigerant circuit in an air conditioner using a heat storage medium.An air conditioner (10) comprises: a heat storage circuit (71) through which a flowable heat storage medium circulates; a heat-storage heat exchanger (30...
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JP5537788B2 |
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JP5535504B2 |
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JP2014119166A |
To suppress or prevent heat generation and temperature rise of a power supply device that drives a compressor motor resulting from the shortage of refrigerant in a cooler in a refrigeration device including the cooler for cooling the pow...
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JP2014115008A |
To provide a waste heat utilization device capable of suppressing progress of performance deterioration in an internal combustion engine after leakage of working fluid occurs.A waste heat utilization device of the present invention compr...
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JP5526494B2 |
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JP2014109416A |
To circulate, in a heat pump cycle, liquid refrigerant or oil remaining in a downstream side header with a simple structure.In a pair of headers 5b, 5c, the downstream side header 5c served in a downstream side in a heating operation, an...
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JP5516602B2 |
A refrigeration apparatus (1) includes a refrigerant circuit (10) having a main circuit (10A) performing a refrigeration cycle and a branch circuit (10B) which branches part of high-pressure liquid refrigerant flowing through the main ci...
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JP5518431B2 |
To achieve operation in a range with high operation efficiency while promoting equalization of operation time of each compressor, in consideration of a coefficient of performance COP of each compressor. Based on total operation time of e...
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JP5518089B2 |
To obtain a refrigeration cycle apparatus that is capable of improving continuity of control of a heat exchange capacity of a heat source side heat exchanger. A refrigeration cycle apparatus (an air-conditioning apparatus) including a he...
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JP5517333B2 |
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JP2014102009A |
To prevent degradation in heat exchange efficiency even if a phenomenon that causes an increase in ventilation resistance such as frosting occurs and the ventilation resistance of a heat exchanger increases.In an air conditioner outdoor ...
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JP5511432B2 |
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JP5511897B2 |
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JP5509942B2 |
In an ejector unit, an ejector is bonded to a container to define in the container an inlet space in which an inlet of a nozzle portion of the ejector is open, a suction space in which a refrigerant suction port of the ejector is open an...
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JP5511838B2 |
To provide an air-conditioning apparatus capable of achieving energy saving. Pump control of controlling the operating capacity of a pump 21 is performed such that the opening degree of a heat medium flow control device 25, controlled by...
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JP5510441B2 |
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JP2014098502A |
To improve heat exchange capability, make split refrigerant flows flowing in respective refrigerant circulating tubes uniform, prevent accumulation of refrigerant during low-load operation, and improve heat exchange performance.An air co...
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JP5506185B2 |
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JP5506944B2 |
In a refrigeration cycle apparatus using an ejector, a high-efficiency operation is realized over a wide operating range. In a refrigeration cycle apparatus 100, a compressor 101, a condenser 102, a first flow control valve 103, a refrig...
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JP5505350B2 |
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JP5501094B2 |
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JP5500703B1 |
To provide a cooling facility for a laser processing machine, which significantly reduces power consumption on the refrigerator side to reduce running costs and save energy. A first refrigerating machine 2 in which a heat exchanger 24 is...
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JP5500291B2 |
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JP5498511B2 |
It is an object of the invention to prevent unnecessary inefficiency in a system in which a plurality of usage units that use an aqueous medium are connected to a single heat source unit. A heat source unit (2) has a capacity-variable he...
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JP2014088975A |
To provide a heating/cooling device capable of executing both of a heating treatment and a cooling treatment in parallel, and also independently executing only one of the treatments.A heating/cooling device includes: a heat pump 2 having...
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JP5493769B2 |
In an evaporator unit, a first evaporator is coupled to an ejector to evaporate refrigerant flowing out of the ejector, a second evaporator is coupled to a refrigerant suction port of the ejector to evaporate the refrigerant to be drawn ...
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JP5493778B2 |
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JP5482458B2 |
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JP5483102B2 |
To enable determination of a combination of piping and wiring in a wide temperature range.When an outdoor temperature is a predetermined temperature or below, space heating operations are simultaneously performed by opening all expansion...
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JP5482487B2 |
To provide a refrigerant circuit device, which allows satisfactory heating single operation regardless of the ambient temperature.The device includes: a main passage 20 constituted by connecting an internal heat exchanger 24, a compresso...
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JP5482767B2 |
An ejector-type refrigeration cycle device is provided with a first ejector (15) which draws refrigerant from a refrigerant suction port (15b, 24b) by using a high-speed refrigerant flow jetted from a nozzle part (15a, 24a), and a first ...
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JP5484587B2 |
Obtained is a heat medium relay unit capable of having improved serviceability and an air-conditioning apparatus equipped with the heat medium relay unit. Heat medium flow control devices 25 are each disposed below a corresponding one of...
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JP2014070829A |
To provide a refrigerator which can avoid that liquid compression is performed by a compressor corresponding to an air conditioning unit when the air conditioning unit breaks down and is recovered.A refrigerator includes: an on-off valve...
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JP2014070835A |
To decrease the number of pressure sensors, in a refrigeration device including a refrigerant circuit in which a plurality of use-side heat exchangers evaporating at different temperatures are connected in parallel with each other.A cont...
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JP5474397B2 |
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JP5474050B2 |
Use side heat exchangers 26, an intermediate heat exchanger 15a that heats a heat medium flowing to the use side heat exchangers 26, an intermediate heat exchanger 15b that cools the heat medium flowing to the use side heat exchangers 26...
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JP5463995B2 |
To provide a multi-room type air conditioning device capable of preventing inflow of a liquid refrigerant to a compressor when operating load at an indoor unit side is reduced, without increasing the size of an accumulator.When the opera...
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JP2014055765A |
To improve mountability of an ejector type refrigeration cycle.An evaporator unit includes: an ejector 14 for mixing a refrigerant injected from a nozzle portion 14a with a refrigerant sucked from a refrigerant suction port 14b and disch...
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JP2014052121A |
To surely execute an operation of high efficiency by optimizing an operation frequency of a compressor, in a cold storage type refrigeration device in which a refrigerant is supercooled by utilizing cold heat stored in a cold storage dev...
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JP5446064B2 |
A heat exchange system (1A) includes an outdoor heat exchanger (11), an indoor heat exchanger (12), a compressor (13), an expansion valve (15), a capillary tube (16), and a cooling jacket (20). The compressor (13) is provided on a first ...
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JP5443347B2 |
A method for operating a closed circuit vapour compression refrigeration system is disclosed. The system may operate with supercritical pressure on a high pressure side, and includes at least one compressor, at least one heat rejector, a...
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JP5429233B2 |
To suppress an increase in suction pressure loss of an ejector having ribs extending upwardly outward and housed inside a cylindrical member.When accommodated in an ejector tank 23 formed to be cylindrical and having an inflow hole 23f f...
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