| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | REFRIGERATION CYCLE APPARATUS | US13576358 | 2010-02-12 | US20120297804A1 | 2012-11-29 | Koji Yamashita; Hiroyuki Morimoto; Takeshi Hatomura |
| In the invention, control of the expansion device is carried out based on the temperature difference between the refrigerant temperature of the first representative point that becomes a predetermined enthalpy under the refrigerant pressure of the gas cooler and the detection temperature of the outlet temperature sensor, and control of the rotation speed of the compressor and/or the rotation speed of the heat medium sending device is/are carried out based on the second representative point that is, under the refrigerant pressure of the gas cooler, a temperature different from the first representative point. | ||||||
| 142 | HIGH-SIDE PRESSURE CONTROL FOR TRANSCRITICAL REFRIGERATION SYSTEM | US13121824 | 2009-09-28 | US20110239668A1 | 2011-10-06 | HongTao Qiao; Hans-Joachim Huff |
| To accommodate a transcritical vapor compression system with an operating envelope which covers a large range of heat source temperatures, a high side pressure is maintained at a level determined not only by operating conditions at the condenser but also at the evaporator. A control is provided to vary the expansion device in response to various combinations of refrigerant conditions sensed at both the condenser and the evaporator in order to maintain a desired high side pressure. | ||||||
| 143 | Heat pump type hot water supply outdoor apparatus | US12360439 | 2009-01-27 | US08020393B2 | 2011-09-20 | Kazuki Okada; Takahiro Ushijima; Kengo Takahashi |
| A heat pump type hot water supply outdoor apparatus, in a compressor, a water heat exchanger, a first expansion valve, a medium pressure receiver, a second expansion valve, and an air heat exchanger are connected circularly, has an injection circuit, which is a bypass for a part of the refrigerant between the medium pressure receiver and the second pressure reduction unit, to inject the part of refrigerant into a compression chamber of the compressor, and has a third expansion valve and an internal heat exchanger for carrying out heat exchange between the refrigerant whose pressure is reduced by the third expansion valve and the refrigerant between the medium pressure receiver and the second expansion valve, a pressure detection sensor for detecting a condensing pressure, and a controller for starting an injection control by the third expansion valve at the time when the condensing pressure detected by the pressure sensor or the condensing temperature calculated from the condensing pressure becomes a first predetermined value or more and stopping the injection control at the time when the condensing pressure or the condensing temperature becomes a second predetermined value which is smaller than the first predetermined value, or less. With this arrangement, an appropriate injection control can be realized and a high hot water supply/heating capability operation can be carried out. | ||||||
| 144 | CHILLER WITH SETPOINT ADJUSTMENT | US12993696 | 2008-11-19 | US20110197601A1 | 2011-08-18 | Richard Booth; Duncan E. Hitchcox |
| A chiller system includes a compressor operable at a compressor speed between a first speed and a second speed to deliver a flow of compressed fluid to a manifold at a compressor pressure and a condenser in fluid communication with the manifold to receive the compressed fluid. A condenser fan is operable at a fan speed between a minimum fan speed and a maximum fan speed to direct a cooling flow to the condenser to cool the compressed fluid and an evaporator is positioned to receive the flow of compressed fluid and operable to cool a second fluid. A controller is operable at least partially in response to a measured temperature of the second fluid and a measured temperature of the cooling flow to determine a desired pressure and to vary the compressor speed and the fan speed such that the compressor pressure equals the desired pressure. | ||||||
| 145 | REFRIGERATING APPARATUS | US12976332 | 2010-12-22 | US20110154840A1 | 2011-06-30 | Kazuhiko Mihara; Hidetaka Sasaki; Setsu Hasegawa; Ken Kawakubo; Masahisa Otake |
| An object of the present invention is to keep an appropriate amount of a refrigerant to be circulated through a refrigerant circuit and prevent an overload operation of compression means due to high pressure abnormality in a refrigerating apparatus which obtains a supercritical pressure on a high pressure side. The refrigerating apparatus which obtains the supercritical pressure on the high pressure side comprises a refrigerant amount regulation tank connected to the refrigerant circuit on the high pressure side via a communicating circuit; a communicating circuit which connects the upper part of this tank to a medium pressure region of the refrigerant circuit; a communicating circuit which connects the lower part of the tank to the medium pressure region of the refrigerant circuit; an electromotive expansion valve of the communicating circuit; an electromagnetic valve of the communicating circuit; an electromagnetic valve of the communicating circuit; and control means for controlling these valves to collect a refrigerant circulated through the refrigerant circuit in the tank and discharging the refrigerant to the refrigerant circuit. | ||||||
| 146 | Refrigeration apparatus | US12517499 | 2007-12-11 | US07921670B2 | 2011-04-12 | Yoshio Ueno |
| A refrigeration apparatus is configured to perform a refrigeration cycle operation in which a high-pressure side attains a pressure that exceeds the critical pressure of a refrigerant used in the refrigeration cycle operation. The refrigeration apparatus includes a refrigerant circuit and a control unit. The refrigerant circuit has a plurality of constituent components including a compressor, a cooler, an expansion mechanism, and a heater. The control unit is operatively coupled to control at least one of the constituent components such that a quasi-subcooling degree is within a predetermined temperature range, the quasi-subcooling degree being a temperature difference between a quasi-condensation temperature and a cooler outlet refrigerant temperature, with the quasi-condensation temperature being the refrigerant temperature at which isobaric specific heat capacity of the refrigerant at the refrigerant pressure on the high-pressure side of the refrigeration cycle is at a maximum. | ||||||
| 147 | REFRIGERATION APPARATUS | US12919047 | 2009-02-25 | US20110005270A1 | 2011-01-13 | Atsushi Yoshimi; Shuji Fujimoto; Masakazu Okamoto |
| A refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, a usage-side heat exchanger, a switching mechanism and an intermediate heat exchanger. Refrigerant discharged from a first-stage compression element is sequentially compressed by a second-stage compression element. Each of the heat source-side heat exchanger and the usage-side heat exchanger functions an evaporator or radiator. The switching mechanism is configured to switch between a cooling operation state and a heating operation state. The intermediate heat exchanger is configured to cool refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element when the switching mechanism has been set to the cooling operation state, and to evaporate refrigerant whose heat is radiated in the usage-side heat exchanger when the switching mechanism has been set to the heating operation state. | ||||||
| 148 | REFRIGERATION CYCLE APPARATUS | US12866410 | 2009-02-13 | US20100313586A1 | 2010-12-16 | Yuichi Yakumaru; Katsuji Taniguchi; Masaya Honma; Subaru Matsumoto |
| A refrigeration cycle apparatus (100) includes: a first compressor (101); a second compressor (102) connected in parallel with the first compressor (101) in a refrigerant circuit (200); a radiator (103) for cooling a refrigerant compressed by the first and second compressors; an expander (104) coupled to a rotation shaft of the first compressor (101); an evaporator (105) for evaporating the refrigerant expanded by the expander (104); and a controller (115). The controller (115) includes an efficiency enhancing means for performing a first process including a step of changing a rotation speed of the first compressor (101), as a process for increasing a coefficient of performance (COP) of the refrigeration cycle apparatus (100), when a temperature of a heat carrier flowing into the radiator (103) is in a predetermined temperature range, and for performing a second process including a step of changing a rotation speed of the second compressor (102), as a process for increasing the coefficient of performance, when the temperature of the heat carrier flowing into the radiator (103) is not in the predetermined temperature range. | ||||||
| 149 | REFRIGERATION APPARATUS | US12744963 | 2008-11-28 | US20100300141A1 | 2010-12-02 | Shuji Fujimoto; Atsushi Yoshimi; Yoshio Ueno; Ryusuke Fujiyoshi; Toshiyuki Kurihara; Shun Yoshioka |
| An air-conditioning apparatus uses carbon dioxide as a refrigerant, and includes comprises a two-stage-compression-type compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, and an intercooler. The intercooler uses air as a heat source. The intercooler is configured and arranged to cool refrigerant flowing through an intermediate refrigerant tube that draws refrigerant discharged from the first-stage compression element into the second-stage compression element. The intercooler is integrated with the heat source-side heat exchanger to form an integrated heat exchanger, with the intercooler disposed in an upper part of the integrated heat exchanger. | ||||||
| 150 | REFRIGERATION APPARATUS | US12667016 | 2008-06-11 | US20100175400A1 | 2010-07-15 | Shinichi Kasahara |
| The present disclosure allows for easy settling of control of capability of an refrigeration apparatus for performing a supercritical refrigeration cycle.An air conditioner (10) includes: a refrigerant circuit (20) sequentially connecting a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), and an indoor heat exchanger (27), and performing a supercritical refrigeration cycle in which a high pressure is a supercritical pressure or higher; and a controller (40) for controlling a plurality of objects of control including at least the compressor (21) and the outdoor expansion valve (24). The controller (40) concurrently controls the plurality of objects of control, thereby concurrently controlling a predetermined physical value as an index of an ability of the refrigeration apparatus, and the high pressure of the refrigeration cycle. | ||||||
| 151 | Heat pump apparatus | US10564033 | 2005-04-26 | US07669430B2 | 2010-03-02 | Keizo Matsui; Hiroshi Hasegawa; Fumitoshi Nishiwaki |
| The present invention realizes a reliable heat pump apparatus and heat pump apparatus having high recovering efficiency. The heat pump apparatus includes an expander 711 for expanding working fluid, a permanent magnet type synchronization power generator 710 which is disposed for recovering power by the expander 711 and which generates three phase AC power, and a first converter 708 which converts the AC power to DC power, and which rotates the power generator 710 at a predetermined target number of revolutions by switching of a switching element group 709. The generated electricity is consumed by connection of an AC power supply 701 to a DC power line which is rectified and smoothened by a rectifier circuit 702 and a smoothing capacitor 703, and by driving of an electric motor 706 which rotates a compressor 707 through a motor drive apparatus 704, and the power is efficiently recovered. | ||||||
| 152 | REFRIGERATION DEVICE | US12439977 | 2007-08-30 | US20100037647A1 | 2010-02-18 | Toshiyuki Kurihara; Shinichi Kasahara |
| 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, a first pressure storing unit (23a), and a second pressure determining unit, a pressure detector, and a control unit (23c). The first pressure storing unit stores an upper limit and lower limit of an intermediate pressure. The second pressure determining unit determines an upper limit and lower limit of a high pressure based on the upper limit and lower limit of the intermediate pressure and on a temperature in a vicinity of an exit of the radiator. The control unit controls the first expansion mechanism and the second expansion mechanism so that a pressure detected by the pressure detector will be equal to or less than the upper limit and equal to or greater than the lower limit of the high pressure. | ||||||
| 153 | AIR CONDITIONING APPARATUS | US12440051 | 2007-08-28 | US20100000245A1 | 2010-01-07 | Shinichi Kasahara; Masakazu Okamoto |
| An air conditioning apparatus is filled with a supercritical refrigerant, and includes a compression mechanism, a radiator, an expansion mechanism, an evaporator, a first temperature detector, a target refrigerant temperature derivation unit, and a control unit. The target refrigerant temperature derivation unit uses at least a set temperature to determine a target refrigerant temperature, the set temperature being a temperature that is set relative to the air in the space in which the radiator is disposed, and the target refrigerant temperature being the target temperature of the refrigerant flowing between the outlet side of the radiator and the refrigerant inflow side of the expansion mechanism. The control unit controls the expansion mechanism so that the temperature detected by the first temperature detector corresponds to the target refrigerant temperature. | ||||||
| 154 | Multi-stage refrigeration system including sub-cycle control characteristics | US11066560 | 2005-02-28 | US07631510B2 | 2009-12-15 | Reinhard Radermacher; Toshikazu Ishihara; Hans Huff; Yunho Hwang; Masahisa Otake; Hiroshi Mukaiyama; Osamu Kuwabara; Ichiro Kamimura |
| A multi-stage refrigeration system is provided. The refrigeration system includes a first compression element which produces a first compressed refrigerant stream. A mixer combines the first compressed refrigerant stream with an auxiliary refrigerant stream. A second compression element is coupled to the mixer and produces a second compressed refrigerant stream. A first heat exchanger receives the second compressed refrigerant stream and generates a cooled stream. A stream splitter receives the cooled stream and provides first and second output streams. A first expansion valve receives the first output stream and controls the flow of the first output stream and a second expansion valve receives the second output stream and controls the flow of the second output stream. A second heat exchanger generates the auxiliary refrigerant stream provided to the mixer. An evaporator is coupled to the first expansion valve and the first compression element to evaporate the first output stream and provide an evaporated stream to the first compression element. | ||||||
| 155 | Pressure control valve and vapor-compression refrigerant cycle system using the same | US11147029 | 2005-06-07 | US07607315B2 | 2009-10-27 | Hiromi Ohta |
| A pressure control valve includes a valve portion disposed in a passage from a refrigerant radiator to a suction port of a refrigerant compressor in a vapor-compression refrigerant cycle system. The valve portion controls a refrigerant pressure at an outlet of the refrigerant radiator in accordance with a refrigerant temperature at the outlet of the refrigerant radiator, and the valve portion has a control pressure characteristic in which a pressure change relative to a temperature is smaller than that of the refrigerant. Furthermore, the valve portion may have a fluid passage through which refrigerant flows even when a valve port of the valve portion is closed by a valve body. Accordingly, when the refrigerant radiator is used for heating a fluid, heating capacity for heating the fluid can be rapidly increased at a heating start time. | ||||||
| 156 | AIR CONDITIONER | US12298667 | 2007-04-27 | US20090255284A1 | 2009-10-15 | Manabu Yoshimi |
| A refrigerant circuit and an operation control means are provided. A refrigerant circuit is configured by the interconnection of a heat source unit, a plurality of utilization units, and expansion mechanisms. The heat source unit has a compressor and a heat source side heat exchanger. The utilization units have utilization side heat exchangers. The operation control means is capable of performing a refrigerant quantity judging operation to control constituent equipment such that a first state value becomes a first target control value. In addition, during the refrigerant quantity judging operation, the operation control means maintains a cooling capacity of a first utilization unit among the plurality of utilization units, which air conditions a predetermined space. | ||||||
| 157 | Pressure control valve | US12382777 | 2009-03-24 | US20090242041A1 | 2009-10-01 | Ryo Matsuda; Hiroshi Yokota; Daisuke Watari; Shu Yanagisawa |
| For downsizing, cost reduction, and better characteristic, a pressure control valve (1) consists of a valve main body (2) having a valve chamber (2a); a valve seat (2d) within the valve chamber; a valve body (3) moving close to and away from the valve seat; and a disc spring (11) for energizing the valve body toward the valve seat, the valve body moves away from the valve seat when force acting in a direction for moving the valve body away from the valve seat by pressure within the valve chamber exceeds elastic force of the disc spring, a dimension of the valve main body in a valve body movement direction is lessened by use of the disc spring, a manufacturing cost is reduced by use of the disc spring made for general purpose, and the disc spring is preferable for high-pressure control due to its high spring rigidity. | ||||||
| 158 | Refrigerator and air conditioner | US10579100 | 2004-11-25 | US07526924B2 | 2009-05-05 | Shinichi Wakamoto; Toshihide Kouda; Masahiro Sugihara; Fumitake Unezaki; Masayuki Kakuta |
| A refrigerator has a coolant cooler for cooling a coolant at the entrance of a flow control valve when the cooling amount in the coolant cooler is deficient as well as excessive. The refrigerator includes a compressor for compressing the coolant, a radiator for radiating heat from the coolant, a coolant cooler for cooling the coolant, a flow control valve for regulating the flow volume of the coolant, an evaporator for evaporating the coolant, and a heat-exchange-amount control for controlling the amount of heat exchanged in the cooler. The coolant is circulated through the compressor, the radiator, the coolant cooler, the flow control valve, and the evaporator, in that sequence. | ||||||
| 159 | Heat Pump Water Heating System Using Variable Speed Compressor | US11997158 | 2005-08-31 | US20080302118A1 | 2008-12-11 | Yu Chen; Lili Zhang |
| A transcritical refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. A variable speed drive controls the speed of the refrigerant flowing through the compressor. Varying the speed of the refrigerant flowing through the compressor changes the mass flow rate of the refrigerant in the system to optimize the coefficient of performance. | ||||||
| 160 | Heat Pump for Heating Swimming Pool Water | US12095284 | 2006-11-28 | US20080296396A1 | 2008-12-04 | Julien Corroy; Joel Queirel |
| The invention relates to a heat pump. It relates to a heat pump which, in a primary circuit, comprises a compressor (10), a condenser (12) forming a heat exchanger between the refrigerating fluid and the swimming pool water, an expander (14) and an evaporator (16) forming a heat exchanger between the external surroundings and the refrigerating fluid. The condenser (12) comprises two heat exchange circuits and the heat pump comprises a pressure sensor (18), a member for switching the circulation of the refrigerating fluid between states in which it is circulated in just one or in at least two of the heat exchange circuits, and a member for controlling the switching member according to the value of the signal from the sensor (18). Application to the heating of swimming pool water. | ||||||
QQ群二维码
意见反馈
意见反馈