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1. 发明公开

EP3403033A1 CENTRIFUGAL COMPRESSOR WITH LIQUID INJECTION 有权转让
公开(公告)号：EP3403033A1
公开(公告)日：2018-11-21
申请号：EP17701407.3
申请日：2017-01-11
申请人： Daikin Applied Americas Inc.
发明人： UMEDA, Nobuhiro , HOSSAIN, Md Anwar , TAKIGAWA, Takatoshi
IPC分类号： F25B1/053 , F25B31/00 , F25B49/02 , F04D29/58
CPC分类号： F04D29/5846 , F04D17/10 , F04D25/02 , F04D25/06 , F04D27/001 , F04D27/0207 , F04D27/0238 , F04D29/058 , F04D29/284 , F04D29/4206 , F04D29/441 , F04D29/444 , F04D29/705 , F05D2250/52 , F25B1/053 , F25B31/008 , F25B49/022 , F25B2600/0261 , F25B2600/2513 , F25B2600/2519 , F25B2700/21161 , F25B2700/21171
摘要： A centrifugal compressor for a chiller includes a casing, an inlet guide vane, an impeller downstream of the inlet guide vane, a motor and a diffuser. The casing has inlet and outlet portions with the inlet guide vane disposed in the inlet portion. The impeller is rotatable about a rotation axis defining an axial direction. A liquid injection passage is provided to inject liquid refrigerant into an area between the impeller and the diffuser. The motor rotates the impeller. The diffuser is disposed in the outlet portion downstream from the impeller with an outlet port of the liquid injection passage being disposed between the impeller and the diffuser. A controller is programmed to control an amount of the liquid refrigerant injected into the area between the impeller and the diffuser.

2. 发明公开

EP3385642A1 EXHAUST HEAT RECOVERY SYSTEM 有权
公开(公告)号：EP3385642A1
公开(公告)日：2018-10-10
申请号：EP15909748.4
申请日：2015-12-01
申请人： Mitsubishi Electric Corporation
发明人： TAKATA, Shigeo
IPC分类号： F25B27/02 , F25B25/00 , F25B9/00 , F25B13/00
CPC分类号： F25B27/02 , F25B9/008 , F25B13/00 , F25B25/005 , F25B2339/047 , F25B2600/0253 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , F25B2700/21161 , F25B2700/21171 , Y02A30/274 , Y02B30/741 , Y02P80/152
摘要： A exhaust heat recovery system comprises: a transfer device for circulating a first refrigerant; an exhaust heat recovery heat exchanger for recovering exhaust heat from outside of a system; an exhaust heat supply heat exchanger that exchanges heat with the outside of the system to supply the exhaust heat to the outside of the system; an exhaust-heat heat exchanger that exchanges heat with the outside of the system to emit excess heat in the system to the outside of the system; an auxiliary heat exchanging device having a compressor, a first heat exchanger, an expansion device, and a second heat exchanger connected thereto sequentially by a pipe, a second refrigerant circulating in the auxiliary heat exchanging device; the exhaust heat recovery heat exchanger, the transfer device, the first heat exchanger, the exhaust-heat heat exchanger, the second heat exchanger, and the exhaust heat supply heat exchanger being connected sequentially by a pipe, the first refrigerant circulating in the exhaust heat recovery system, wherein the auxiliary heat exchanging device includes a controller, wherein when temperature of the first refrigerant flowing on an outlet side of the second heat exchanger is higher than an upper limit of a set temperature range, the controller controls a rotation speed of the compressor and an amount of throttle of the expansion device such that the temperature of the first refrigerant entering the exhaust-heat heat exchanger increases.

3. 发明授权

EP2908072B1 HEAT PUMP-TYPE HEATING AND HOT-WATER SUPPLY APPARATUS 有权
公开(公告)号：EP2908072B1
公开(公告)日：2018-10-03
申请号：EP15153933.5
申请日：2015-02-05
申请人： Fujitsu General Limited
发明人： ABIKO, Hiroshi , NOGUCHI, Masanori , DOBATA, Nobuyuki
IPC分类号： F25B6/00 , F25B30/02 , F25B49/02
CPC分类号： F25B30/02 , F25B6/00 , F25B49/02 , F25B2339/047 , F25B2400/06 , F25B2600/2507 , F25B2700/21152 , F25B2700/21161 , F25B2700/21174
摘要： In a heat pump-type heating and hot-water supply apparatus (100,200), when a heating load and a hot-water supply load (24) are operated simultaneously, heat is exchanged between refrigerant flowing out of the hot-water supply load and flowing through a return refrigerant pipe (42) and water circulating through a heating hot-water circuit. Consequently, the operating efficiency of the heat pump-type heating and hot-water supply apparatus upon the simultaneous operation of the heating load and the hot-water supply load can be improved.

4. 发明授权

EP3211350B1 REFRIGERATION CYCLE DEVICE, AND HOT WATER HEATING DEVICE PROVIDED WITH THE SAME 有权
公开(公告)号：EP3211350B1
公开(公告)日：2018-09-26
申请号：EP17155270.6
申请日：2017-02-08
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： MORIWAKI, Shunji , AOYAMA, Shigeo
IPC分类号： F25B30/02
CPC分类号： F25B30/02 , F25B47/025 , F25B2339/047 , F25B2500/08 , F25B2500/31 , F25B2600/2509 , F25B2600/2513 , F25B2700/1933 , F25B2700/195 , F25B2700/2101 , F25B2700/21152 , F25B2700/21161 , F25B2700/21163
摘要： A refrigeration cycle device (1A) according to the present disclosure includes a first temperature sensor (61) for detecting a temperature of refrigerant at an outlet of a bypass channel, a first pressure sensor (51) for detecting a pressure of refrigerant to be sucked into a compressor (21), a second temperature sensor (62) for detecting a discharge temperature of the compressor, and a control device (4). The control device performs control of reducing openings of a main expansion valve (24) and a bypass expansion valve (31), when a degree of superheating of refrigerant at the outlet of the bypass channel (3) is great and a temperature increase value, within a predetermined period of time, of a temperature of refrigerant discharged from the compressor (21) becomes equal to or greater than a predetermined value. Accordingly, an abnormal increase in the discharge temperature at the start of flow of refrigerant through the bypass channel may be suppressed.

5. 发明公开

EP3367020A1 AIR CONDITIONER 有权
公开(公告)号：EP3367020A1
公开(公告)日：2018-08-29
申请号：EP16857227.9
申请日：2016-09-23
申请人： Mitsubishi Electric Corporation
发明人： IKEDA, Soshi , WAKAMOTO, Shinichi , TAKENAKA, Naofumi , HATOMURA, Takeshi
IPC分类号： F25B1/00 , F25B39/04 , F25B43/02 , F25B13/00 , F25B31/00
CPC分类号： F25B1/00 , F25B13/00 , F25B31/004 , F25B39/04 , F25B43/02 , F25B2313/006 , F25B2313/021 , F25B2313/0233 , F25B2341/0662 , F25B2400/0409 , F25B2400/0411 , F25B2600/21 , F25B2600/2501 , F25B2700/2106 , F25B2700/21152 , F25B2700/21161
摘要： An air-conditioning apparatus includes a refrigerant circuit in which pipes sequentially connect a compressor, a flow switching device, a heat source side heat exchanger, an expansion device, a load side heat exchanger, and the flow switching device, and configured to perform a cooling operation and a heating operation switched by the flow switching device, an oil separator configured to separate refrigerating machine oil from refrigerant discharged from the compressor, a first bypass passage in which fluid flowing out of the oil separator flows, an auxiliary heat exchanger configured to cool the fluid, a first flow control device configured to control passing of the fluid, a second bypass passage in which liquid refrigerant or two-phase gas-liquid refrigerant flowing through one of the pipes connecting the heat source side heat exchanger and the expansion device flows, and a second flow control device configured to control passing of refrigerant.

6. 发明授权

EP2420759B1 Centrifugal water chiller performance evaluation system 有权
标题翻译：离心式冷水机组性能评估系统
公开(公告)号：EP2420759B1
公开(公告)日：2018-05-02
申请号：EP11158088.2
申请日：2011-03-14
申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
发明人： Togano, Yoshie , Ueda, Kenji , Matsuo, Minoru
IPC分类号： F25B1/053 , F25B49/02 , F25D17/02
CPC分类号： F25B1/053 , F25B49/02 , F25B2339/047 , F25B2500/19 , F25B2700/21161 , F25B2700/21173 , F25D17/02
摘要： Design COP is iteratively computed. Provided is a centrifugal chiller performance evaluation system including a data acquisition section (101) for acquiring operating data from a centrifugal chiller as input data; a storage section (102) storing a design COP estimation formula obtained by adding correction values corresponding to losses occurring in an actual environment to a computational formula for ideal actual-machine COP expressed using COP characteristics of a reverse Carnot cycle; and a computing section (103) for estimating a design COP at a current operating point using the operating data acquired by the data acquisition section (101) and the design COP estimation formula stored in the storage section (102). The correction values include a first correction value calculated from a first computational formula including the load factor of the centrifugal chiller as a variable and a second correction value calculated from a second computational formula including a difference between cooling water outlet temperature and chilled water outlet temperature as a variable. The second correction value contains an offset from the first correction value depending on cooling water inlet temperature.

7. 发明公开

EP2733441A3 Multi-type air conditioner 审中-公开
标题翻译：多式空调
公开(公告)号：EP2733441A3
公开(公告)日：2018-04-04
申请号：EP13192866.5
申请日：2013-11-14
申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
发明人： Nakamoto, Masahiko , Yamaguchi, Toru , Enya, Atsushi
IPC分类号： F25B13/00 , F25B49/02
CPC分类号： F25B13/00 , F24D11/0214 , F24D19/1039 , F24D2200/123 , F25B49/02 , F25B2313/003 , F25B2313/0233 , F25B2600/17 , F25B2600/2513 , F25B2700/21161
摘要： The present invention has an object to perform an operation with a high degree of freedom in each of an indoor unit (3A,3B,3C) and a water temperature regulation apparatus (40) and perform an efficient operation in accordance with operation states of the indoor unit and the water temperature regulation apparatus. In a mode in which indoor air conditioning by the indoor unit is prioritized, in the case where a target pressure of a refrigerant circuit of an outdoor unit (2) is set in accordance with a set temperature of each indoor unit, a water temperature regulation controller controls the degree of opening of an expansion valve (52) such that the capability of a water heat exchanger does not become equal to or more than 100%. Moreover, in the case where sufficient control cannot be performed by only adjusting the degree of opening of the expansion valve, the amount of water passing through a bypass (72) is adjusted by a water control valve (73), whereby the capability of the water heat exchanger of a water temperature regulation unit can be suppressed to be less than 100%.
摘要翻译：本发明的目的在于在室内机组（3A，3B，3C）和水温调节装置（40）的每一个中以高自由度进行操作，并且根据操作状态执行有效操作室内机和水温调节装置。在优先进行室内单元的室内空气调节的模式下，在根据各室内单元的设定温度设定室外单元（2）的制冷剂回路的目标压力的情况下，进行水温调节控制器控制膨胀阀（52）的开度，使得水热交换器的能力不会等于或大于100％。另外，在仅通过调节膨胀阀的开度不能进行充分的控制的情况下，通过旁通阀72的水量通过水控制阀73进行调节，水温调节单元的水热交换器可以被抑制为小于100％。

8. 发明公开

EP2505941A4 REFRIGERATION DEVICE FOR CONTAINER 有权
公开(公告)号：EP2505941A4
公开(公告)日：2018-04-04
申请号：EP10832784
申请日：2010-09-10
申请人： DAIKIN IND LTD
发明人： YOKOHARA KAZUMA , FUJIMOTO YUUSUKE , OKAMOTO ATSUSHI
IPC分类号： F25B47/02 , F25B1/00
CPC分类号： F25B47/022 , F25B2400/0403 , F25B2400/0411 , F25B2400/13 , F25B2400/16 , F25B2600/111 , F25B2600/112 , F25B2700/1931 , F25B2700/1933 , F25B2700/21161 , F25B2700/21171 , Y02B30/743
摘要： A container refrigeration system includes a refrigerant circuit (20) configured to perform a refrigeration cycle and including a main circuit (21) in which a compressor (30), a condenser (31), an expansion valve (32), and an evaporator (33) are connected together in this order, and a hot gas bypass circuit (22) in which compressed refrigerant of the compressor (30) is supplied to the evaporator (33) by bypassing the condenser (31) and the expansion valve (32); and a compressor control section (81) configured to, in a defrosting operation in which the compressed refrigerant of the compressor (30) returns to the compressor (30) through the hot gas bypass circuit (22) and the evaporator (33) and the evaporator (33) is defrosted, control an operating speed of the compressor (30) such that a pressure of the compressed refrigerant of the compressor (30) reaches a target value.

9. 发明公开

EP2706303A3 Heat pump system 审中-公开
标题翻译：热泵系统
公开(公告)号：EP2706303A3
公开(公告)日：2018-03-21
申请号：EP13183201.6
申请日：2013-09-05
申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
发明人： Maeno, Masashi , Omura, Minemasa , Yoshida, Shigeru
IPC分类号： F24D19/10 , F28F19/00 , G05D23/00
CPC分类号： F24D19/1012 , F24D19/1039 , F24D2200/12 , F25B2339/047 , F25B2700/21161 , F28F19/00 , F28F27/00 , Y02B30/745
摘要： In a type of heat pump system which includes a water/refrigerant heat exchanger (5) and controls a water volume by a water pump (12) such that a temperature of hot water delivered from the heat pump system meets a target temperature, a performance degradation determining part (23) is provided, which determines performance degradation due to scale build-up of the water/refrigerant heat exchanger (5) on the basis of the temperature of the delivered hot water and a temperature difference between a refrigerant outlet temperature and a water inlet temperature of the water/refrigerant heat exchanger (5).
摘要翻译：在一种包括水/制冷剂热交换器（5）并通过水泵（12）控制水量使得从热泵系统输送的热水的温度满足目标温度的热泵系统类型中，性能设有劣化判定部（23），该低温劣化判定部（23）基于供给的热水的温度和制冷剂出口温度与制冷剂出口温度的温度差，来判定由水垢制冷剂热交换器（5）水/制冷剂热交换器（5）的进水温度。

10. 发明授权

EP2483610B1 CASCADE REFRIGERATION SYSTEM HAVING AT LEAST ONE VARIABLE SPEED COMPRESSOR 有权
标题翻译：具有至少一个变速压缩机的级联式制冷系统
公开(公告)号：EP2483610B1
公开(公告)日：2018-03-21
申请号：EP10763555.9
申请日：2010-09-29
申请人： Thermo Fisher Scientific (Asheville) LLC
发明人： WANG, Qi , SWIFT, Todd , BAIR, Richard
IPC分类号： F25B7/00 , F25B49/02 , F25D11/04
CPC分类号： F25B7/00 , F25B49/022 , F25B2500/12 , F25B2500/26 , F25B2600/0253 , F25B2600/111 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , F25B2700/21161 , F25B2700/21174 , F25B2700/21175 , F25D11/04 , F25D2700/02 , F25D2700/12 , F25D2700/14 , Y02B30/741 , Y02B30/743 , Y02B40/32
摘要： A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor that is a variable speed compressor, a second expansion device, and an evaporator. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. A controller stages operation of the first and second compressors and runs the second compressor at an initial speed less than a maximum speed initially when a staging protocol is performed during start up or re-starting of the refrigeration system.

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