121 |
Air conditioner |
US13733738 |
2013-01-03 |
US10088209B2 |
2018-10-02 |
Keito Kawai; Hideya Tamura; Takahiro Matsunaga; Shinju Watanabe; Takashi Kimura; Kotaro Toya; Yasuhiro Oka; Ken Nakashima |
An air conditioner 1 of the embodiment of the present invention, when all compressors 21a-21c have been stopping for a given time or more, starts an air conditioning operation without performing pressure equalizing control in switch units 6a-6d with starting the operation of the air conditioner 1. Also, when the stopping time of all compressors 21a-21c is less than the given time, the air conditioner 1 performs the pressure equalizing control by controlling switch units 6a-6d with starting the operation of the air conditioner 1. In this case, when the stopping time reaches the given time during execution of the pressure equalizing processing control, the pressure equalizing processing control being executed is stopped and the air conditioning operation is started. |
122 |
AIR CONDITIONER, CONTROL DEVICE THEREOF, AND METHOD OF CONTROLLING THE SAME |
US15865218 |
2018-01-08 |
US20180195783A1 |
2018-07-12 |
Dong-Il JUNG; Chang-Yong LEE; Jeong Mun YEOM; Je-Jin LEE; Jae Hun HUR; Dong Hyun GOH; Kwang Il NAM; Hyeong Joon SEO; Dong Kue LEE; Suk Ho LEE; Byoung Guk LIM; Hong Seok JUN |
Disclosed herein are an air conditioner, a control device thereof, and a method of controlling the same. The air conditioner includes a control device including a plurality of indoor unit operation changers, and an indoor unit connected to any one of the plurality of indoor unit operation changers, wherein at least one of the indoor unit and the control device determines an operation mode of each of the plurality of indoor unit operation changers respectively connected to a plurality of indoor units, detects an indoor unit operation changer at an operation mode corresponding to an operation of any one of the plurality of indoor units among the plurality of indoor unit operation changers, and determines an indoor unit operation changer connected to the indoor unit among the plurality of indoor unit operation changers on based on a result of detecting at least one of the indoor unit operation changers. |
123 |
COOLING/HEATING SWITCHING UNIT AND AIR CONDITIONER INCLUDING THE SAME |
US15618321 |
2017-06-09 |
US20180017293A1 |
2018-01-18 |
Koji NAITO; Naoyuki FUSHIMI; Kazumoto URATA; Gen YASUDA; Kazunori FUKUDA |
A cooling/heating switching unit is provided that is capable of simply and reliably detecting leak of refrigerant. The switching unit includes: first and second fittings having a high/low-pressure-gas main pipe and a low-pressure-gas main pipe connected thereto, respectively, wherein the main pipes are linked to an outdoor unit; a third fitting having an indoor-unit connection pipe connected thereto, wherein the connection pipe is linked to indoor units; an expansion valve for high/low-pressure-gas pipe, an expansion valve for low-pressure-gas pipe, and expansion-valve driving sections that selectively connect the first or second fitting with the third fitting via a refrigerant pipe to control a flow direction of refrigerant; a housing that houses the refrigerant pipe; a heat insulating material that fills inside of the housing to insulate the refrigerant pipe arranged inside of the housing from heat; and a refrigerant leak detection sensor installed outside of the housing to detect leaked refrigerant. |
124 |
Air-conditioning apparatus |
US14441334 |
2012-11-30 |
US09797608B2 |
2017-10-24 |
Daisuke Shimamoto; Yuji Motomura; Osamu Morimoto; Takayoshi Honda; Tatsuo Ono; Koji Nishioka |
In an air-conditioning apparatus including a plurality of indoor units connected to a heat medium converter and a plurality of remote controllers respectively provided for the indoor units, the remote controllers each include a temperature sensor that detect a temperature of a corresponding space to be air-conditioned, and are each configured to communicate with a heat medium converter controller of the heat medium converter and an indoor unit controller of the corresponding indoor unit, transmit an instruction to start and stop an operation and data related to rotation speed of an indoor air-sending device to the corresponding indoor unit controller, and transmit the instruction to start and stop the operation, and a target temperature and a temperature detected by the temperature sensor or a difference therebetween, to the heat medium converter controller. |
125 |
AIR CONDITIONER CONSTRUCTION METHOD |
US15625328 |
2017-06-16 |
US20170284686A1 |
2017-10-05 |
Satoshi KAWANO; Shinya MATSUOKA; Masahiro OKA; Mari SUSAKI |
Operation switching units, each changing directions of a refrigerant flowing through its associated indoor unit in response to a switch from a cooling operation to a heating operation, or vice versa, are each connected with the associated indoor unit through indoor communication pipes; a gas-liquid separation unit is connected with an outdoor unit through outdoor communication pipes; and the operation switching units are connected with the gas-liquid separation unit through two intermediate communication pipes preinstalled and one intermediate communication pipe newly installed. This provides a simple and cost-effective means for upgrading a preinstalled air conditioner making a switch from cooling to heating, and vice versa, into an air conditioner that can perform a cooling operation and a heating operation in parallel with each other. |
126 |
Refrigeration apparatus |
US15027218 |
2014-10-02 |
US09733000B2 |
2017-08-15 |
Satoshi Kawano; Junya Minami; Mari Susaki; Masahiro Oka |
A refrigeration apparatus includes a compressor, a heat source-side heat exchanger, a receiver, a utilization-side heat exchange, a receiver degassing pipe interconnecting an upper portion of the receiver and a suction side of the compressor, and a receiver liquid level detection pipe connected to the receiver. The receiver liquid level detection pipe detects whether or not liquid level in the receiver has reached a predetermined position on a lower side of a position where the receiver degassing pipe is connected. The receiver liquid level detection pipe merges with the receiver degassing pipe via a capillary tube. The receiver degassing pipe has a refrigerant heater to heat refrigerant flowing through the receiver degassing pipe. Whether or not the liquid level in the receiver has reached the predetermined position is detected using a temperature of refrigerant flowing though the receiver degassing pipe. |
127 |
Outdoor unit of air-conditioner, two-pipe air-conditioning system and three-pipe air-conditioning system having the same |
US14476832 |
2014-09-04 |
US09683760B2 |
2017-06-20 |
Xianjin Sun; Meibing Xiong; Xihua Ma; Zhengxing Wang |
An outdoor unit of an air-conditioner and two-pipe and three-pipe air-conditioning systems having the same are provided. The outdoor unit includes a compressor defining an outlet and an inlet; a first four-way valve defining a first valve communicated with the outlet, second and third ports communicated with the inlet; a second four-way valve defining second and third ports communicated with the inlet; an outdoor heat exchanger defining a first refrigerant valve Communicated with the fourth port of the first four-way valve; a first gas pipe defining a first end connected with the second and third ports of the first and second four-way valves and, the inlet; a second gas pipe defining a first end connected with the fourth port of the second four-way valve; a third gas pipe defining a first end connected with the outlet and a second end connected with the first port of the second four-way valve. |
128 |
Refrigerant channel switching unit |
US15103257 |
2014-12-03 |
US09651283B2 |
2017-05-16 |
Akihiro Eguchi; Shigeki Kamitani |
A refrigerant channel switching unit is disposed between a heat source unit and a utilization unit to switch flow of refrigerant in the refrigerant circuit. The refrigerant channel switching unit includes a first refrigerant pipe connected to a suction gas communicating pipe extending from the heat source unit, a second refrigerant pipe connected to a high-low pressure gas communicating pipe extending from the heat source unit, a third refrigerant pipe connected to a gas pipe extending to the utilization unit, a coupling portion, a first switch valve mounted to the first refrigerant pipe, and a second switch valve mounted to the second refrigerant pipe. The coupling portion is connected to the first, second and third refrigerant pipes. The First second and third are coupled through the coupling portion. |
129 |
HEAT PUMP SYSTEM |
US15405591 |
2017-01-13 |
US20170130997A1 |
2017-05-11 |
Masahiro HONDA |
A heat pump system includes a heat source unit, a discharge refrigerant communication tube, a liquid refrigerant communication tube, a gas refrigerant communication tube, a first usage unit and a second usage unit. The first usage unit has a first usage-side heat exchanger capable of functioning as a radiator of the heat-source-side refrigerant introduced from the discharge refrigerant communication tube. The first usage unit is capable of performing operation in which an aqueous medium is heated by radiation of the heat-source-side refrigerant in the first usage-side heat exchanger. The second usage unit has a second usage-side heat exchanger capable of functioning as an evaporator of the heat-source-side refrigerant introduced from the liquid refrigerant communication tube. The second usage unit is capable of performing operation in which an air medium is cooled by evaporation of the heat-source-side refrigerant in the second usage-side heat exchanger. |
130 |
Air conditioner and control method thereof |
US14163295 |
2014-01-24 |
US09448008B2 |
2016-09-20 |
Ji Eun Lee; Su Ho Jo; Kwan Joo Myoung; Awata Hiroshi; Yuodo |
An air conditioner is provided. The air conditioner includes at least one outdoor unit, a plurality of indoor units, and at least one remote controller to receive operation commands for the plural indoor units. One of the plural indoor units may be selected as a power-supplying indoor unit to supply electric power to the at least one remote controller, based on voltage values of electric power to be supplied from the plural indoor units to the at least one remote controller. The selected indoor unit supplies electric power to the at least one controller. The air conditioner enables a supply of electric power with a sufficiently high voltage to a remote controller by supplying electric power to the remote controller by one indoor unit exhibiting a highest voltage value of electric power to be supplied to the remote controller, as compared to other indoor units. |
131 |
REFRIGERATION APPARATUS |
US15027218 |
2014-10-02 |
US20160245568A1 |
2016-08-25 |
Satoshi KAWANO; Junya MINAMI; Mari SUSAKI; Masahiro OKA |
A refrigeration apparatus includes a compressor, a heat source-side heat exchanger, a receiver, a utilization-side heat exchange, a receiver degassing pipe interconnecting an upper portion of the receiver and a suction side of the compressor, and a receiver liquid level detection pipe connected to the receiver. The receiver liquid level detection pipe detects whether or not liquid level in the receiver has reached a predetermined position on a lower side of a position where the receiver degassing pipe is connected. The receiver liquid level detection pipe merges with the receiver degassing pipe via a capillary tube. The receiver degassing pipe has a refrigerant heater to heat refrigerant flowing through the receiver degassing pipe. Whether or not the liquid level in the receiver has reached the predetermined position is detected using a temperature of refrigerant flowing though the receiver degassing pipe. |
132 |
HEAT-RECOVERTY-TYPE REFRIGERATING APPARATUS |
US15025234 |
2014-09-04 |
US20160238285A1 |
2016-08-18 |
Satoshi KAWANO; Tomohisa TAKEUCHI; Sayako KIMURA; Shinya MATSUOKA |
A heat-recovery-type refrigerating apparatus includes a compressor, a heat-source-side heat exchanger, and a plurality of usage-side heat exchangers, and refrigerant is sent from the usage-side heat exchanger functioning as a refrigerant radiator to the usage-side heat exchanger functioning as a refrigerant evaporator, whereby heat can be recovered between the usage-side heat exchangers. Here, a portion of the heat-source-side heat exchanger is configured as a precooling heat exchanger for always circulating high-pressure vapor refrigerant discharged from the compressor, and a refrigerant cooler for cooling an electrical equipment item is connected to a downstream side of the precooling heat exchanger. |
133 |
System And Method Of Controlling A Variable-Capacity Compressor |
US14674980 |
2015-03-31 |
US20150276291A1 |
2015-10-01 |
Hung M. PHAM; Shane J. ANGLE; Edward J. TRUDEAU; Chetan SOWANI |
A climate-control system may include a variable-capacity compressor unit and a control module controlling the compressor unit. The compressor unit may be operable in a first capacity mode and in a second capacity mode that is higher than the first capacity mode. The control module may be configured to switch the compressor unit among a shutdown state, the first capacity mode and the second capacity mode based on a demand signal and outdoor-air-temperature data. |
134 |
Air conditioner |
US12868318 |
2010-08-25 |
US08931298B2 |
2015-01-13 |
Takashi Sekine |
A triple-pipeline type first outdoor unit 2 connected to three inter-unit pipelines 5 made up of a high-pressure gas pipe 7, a low-pressure gas pipe 6, and a fluid pipe 8 and a second outdoor unit 3 connected by two pipelines of a gas pipe 35 and a fluid pipe 36 are provided, in which a fluid pipe 36 of this second outdoor unit 3 is connected to the fluid pipe 8, while a gas pipe 35 of the second outdoor unit is selectively connected to the high-pressure gas pipe 7 or the low-pressure gas pipe 6 using a valve-element kit 50 having a four-way valve 51. |
135 |
AIR CONDITIONER AND CONTROL METHOD THEREOF |
US14163295 |
2014-01-24 |
US20150000310A1 |
2015-01-01 |
Ji Eun Lee; Su Ho Jo; Kwan Joo Myoung; Awata Hiroshi; Yuoda |
An air conditioner is provided. The air conditioner includes at least one outdoor unit, a plurality of indoor units, and at least one remote controller to receive operation commands for the plural indoor units. One of the plural indoor units may be selected as a power-supplying indoor unit to supply electric power to the at least one remote controller, based on voltage values of electric power to be supplied from the plural indoor units to the at least one remote controller. The selected indoor unit supplies electric power to the at least one controller. The air conditioner enables a supply of electric power with a sufficiently high voltage to a remote controller by supplying electric power to the remote controller by one indoor unit exhibiting a highest voltage value of electric power to be supplied to the remote controller, as compared to other indoor units. |
136 |
Heat pump system |
US13202608 |
2010-02-23 |
US08769974B2 |
2014-07-08 |
Masahiro Honda |
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 heat-source-side blower and a heat-source-side switching mechanism. The first usage unit has at least a radiation amount adjusting element and a first usage-side flow rate adjustment valve. The second usage unit has at least a second usage-side flow rate adjustment valve. In a case in which the second usage unit performs an air-cooling operation and the first usage unit performs an aqueous medium heating operation, the amount of radiation adjusted by the radiation amount adjusting element or operating capacity of the heat-source-side blower is controlled in accordance with a state of the first usage-side flow rate adjustment valve and the second usage-side flow rate adjustment valve. |
137 |
Air-conditioning apparatus |
US13511695 |
2009-11-30 |
US08733120B2 |
2014-05-27 |
Hiroyuki Morimoto; Koji Yamashita; Yuji Motomura |
An air-conditioning apparatus that that is capable of saving energy is provided. An air-conditioning apparatus includes a refrigerant indoor unit that air-conditions a conditioned space by using a heat source side refrigerant supplied from an outdoor unit, and a heat medium indoor unit that air-conditions a conditioned space by using a heat medium different from the heat source side refrigerant. The air-conditioning apparatus includes a first heat medium relay unit that is supplied with the heat source side refrigerant from the outdoor unit, a third heat medium relay unit interposed between the first heat medium relay unit and the refrigerant indoor unit, and a third heat medium relay unit interposed between the first heat medium relay unit and the heat medium indoor unit. |
138 |
Air conditioner |
US12439820 |
2007-08-29 |
US08402779B2 |
2013-03-26 |
Tadafumi Nishimura; Takahiro Yamaguchi |
An air conditioner refrigerant circuit performs a cooling operation in which an outdoor heat exchanger functions as a condenser of the refrigerant compressed in a compressor and an indoor heat exchanger functions as an evaporator of the refrigerant condensed in the outdoor heat exchanger. Further, an outdoor expansion valve is disposed at a position that is at once downstream of the outdoor heat exchanger and upstream of a liquid refrigerant communication pipe in the refrigerant flow direction in the refrigerant circuit in the cooling operation, and shuts off the refrigerant flow. A refrigerant detection unit is disposed upstream of the outdoor expansion valve and detects the amount or the amount-related value of refrigerant accumulated upstream of the outdoor expansion valve. |
139 |
MULTI-TYPE AIR CONDITIONER |
US13550901 |
2012-07-17 |
US20130019613A1 |
2013-01-24 |
Suk Ho LEE; Min CHANG |
A multi-type air conditioner includes an outdoor unit disposed at an exterior space, a plurality of indoor units disposed at interior spaces, and a mode conversion unit connected to the outdoor unit and the plurality of indoor units through refrigerant pipes to circulate a refrigerant between the outdoor unit and the plurality of indoor units. The mode conversion unit includes a plurality of supercooling units which are configured to supercool a refrigerant before the refrigerant is introduced to the plurality of indoor units, using a supercooling refrigerant pipe which sequentially passes through at least one of the plurality of supercooling units, so that a refrigerant after having passed through the supercooling unit, is in a state of pure gas while ensuring a desired supercooling degree that is suitable for each indoor unit. |
140 |
Air conditioner |
US12524007 |
2008-01-23 |
US08302413B2 |
2012-11-06 |
Satoshi Kawano; Shinya Matsuoka |
Out of switching mechanisms (30A, 30B), the switching mechanism (30A) connected to an indoor heat exchanger (41) performing a heating operation is configured so that the opening of a supercooling control valve (53) is adjusted according to the air conditioning load of another indoor heat exchanger (41) performing a cooling operation downstream of a liquid connection pipe (13) connected to the former indoor heat exchanger (41). |