子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | VARIABLE-CAPACITY AIR CONDITIONER | US11619657 | 2007-01-04 | US20070151267A1 | 2007-07-05 | Koji HATANO; Hideyuki Kanzaki; Yoshihito Yamada |
| A variable-capacity air conditioner includes a compressor for compressing refrigerant, an indoor heat-exchanger coupled to the compressor, an outdoor heat-exchanger coupled to the compressor, a piping for coupling the compressor, the indoor heat-exchanger, and the outdoor heat-exchanger, a first capillary tube provided in the piping, a second capillary tube provided in the piping in series with the first capillary tube, a by-pass pipe connected in parallel to the second capillary tube, a valve for opening and closing the by-pass pipe, and a controller for controlling the compressor and the valve. The compressor is operable at a first capacity and a second capacity less than the first capacity to compress the refrigerant. The air conditioner prevents the compressor from overload and allows the refrigerant to circulating at an optimal flow amount rate through a refrigeration cycle. | ||||||
| 182 | Freezer device | US10566726 | 2004-08-19 | US20060185376A1 | 2006-08-24 | Atsushi Yoshimi; Manabu Yoshimi |
| A refrigeration system comprises a refrigerant circuit (10) in which a compressor (21), an outdoor heat exchanger (24) and an indoor heat exchanger (33) are connected to operate on a refrigeration cycle, and an oil recovery container (40) connected to the suction side of the compressor (21), and carries out a recovery operation for circulating refrigerant through the refrigerant circuit (10) to recover oil into the recovery container (40). The refrigeration system further comprises: a compressor control section (50) for stepwise increasing the operating capacity of the compressor (21) in an initial stage of the recovery operation so that the refrigerant temperature in the low pressure side of the refrigerant circuit (10) reaches or exceeds a predetermined value; and a fan control section (70) for continuously driving an indoor fan (33a) at least during a time period when the compressor (21) is driven. This suppresses an abrupt start-up of the compressor (21) and ensures that refrigerant in the indoor heat exchanger (33) evaporates. Thus, a temperature drop of refrigerant in the low pressure side can be prevented. | ||||||
| 183 | Air conditioning apparatus using supercritical refrigerant for vehicle | US10768636 | 2004-02-02 | US06895769B2 | 2005-05-24 | Yasuhito Okawara; Toshio Yajima |
| An air conditioning apparatus includes a refrigerating cycle supplying the supercritical refrigerant pressurized by the variable displacement compressor to the outdoor heat exchanger, the expansion valve and the indoor heat exchanger, in sequence and subsequently return the supercritical refrigerant to the variable displacement compressor. The apparatus further includes a displacement control unit that establishes a limit value derived from the engine speed and further controls a discharge volume of the compressor prior to the control in the opening degree of the expansion valve, on a basis of the so-established limit value. | ||||||
| 184 | Compressor operation following sensor failure | US10420754 | 2003-04-23 | US06877328B2 | 2005-04-12 | Richard H. Bair, III; Bryan M. Elwood |
| A compressor is controlled by generating and storing a compressor operation log. In addition, a compressor operation is selected from the compressor operation log in response to a sensor failure. Furthermore, the compressor is modulated according to the selected compressor operation in response to the sensor failure. | ||||||
| 185 | Refrigerating cycle device | US10501748 | 2003-03-27 | US20050061011A1 | 2005-03-24 | Yuuichi Yakumaru; Masami Funakura; Fumitoshi Nishiwaki; Noriho Okaza |
| In a refrigerating cycle device using carbon dioxide as a refrigerant, there exists a problem that the provision of a receiver at a low-pressure side increases cost and volume due to a pressure resistance design necessary for ensuring safety. By adjusting a refrigerant holding quantity of a first heat exchanger in such a manner that a refrigerant pressure of the first heat exchanger 13 is changed by operating a first decompressor 12 and a second decompressor 15, an imbalance of a refrigerant quantity between time for space cooling and time for heating or dehumidifying can be alleviated and hence, it is possible to perform an operation of the refrigerating cycle device with high efficiency with a miniaturized receiver or without providing the receiver. | ||||||
| 186 | Air conditioning apparatus using supercritical refrigerant for vehicle | US10768636 | 2004-02-02 | US20040237549A1 | 2004-12-02 | Yasuhito Okawara; Toshio Yajima |
| An air conditioning apparatus includes a refrigerating cycle supplying the supercritical refrigerant pressurized by the variable displacement compressor to the outdoor heat exchanger, the expansion valve and the indoor heat exchanger, in sequence and subsequently return the supercritical refrigerant to the variable displacement compressor. The apparatus further includes a displacement control unit that establishes a limit value derived from the engine speed and further controls a discharge volume of the compressor prior to the control in the opening degree of the expansion valve, on a basis of the so-established limit value. | ||||||
| 187 | Vehicle air conditioner | US10731537 | 2003-12-09 | US20040112074A1 | 2004-06-17 | Masato Komura; Kimihiko Sato; Yasutane Hijikata |
| In a vehicle air conditioner, a compressor is driven by a vehicle engine, and a displacement of the compressor is controlled based on a cooling load. When a post-evaporator air temperature (TE) is higher than a predetermined value (TEOnullnull), it is determined that the cooling load is large, and the compressor is forcibly controlled at maximum displacement that is larger than a control value controlled based on the cooling load. Accordingly, the post-evaporator air temperature (TE) can be rapidly reduced to be lower than the predetermined value (TEOnullnull), so that a driving time of the vehicle engine can be made shorter. As a result, fuel consumption efficiency of the vehicle engine can be effectively improved. | ||||||
| 188 | Air conditioner | US10374275 | 2003-02-26 | US06748753B2 | 2004-06-15 | Yoshiaki Takano; Satoshi Izawa; Shun Kurata |
| In the air conditioner of the present invention, both the normal cooling mode operation, in which refrigerant discharged from the compressor 1 is made to flow in the condenser 2, and the heating mode operation conducted by the hot gas bypass, in which refrigerant is made to bypass the condenser and directly flow in the evaporator 4 via the throttle 17, can be conducted. Before this heating mode operation, after the compressor is turned on for a predetermined period of time in the cooling mode, the compressor is turned off for a predetermined period of time, so that refrigerant residing in the condenser can be recovered into the hot gas cycle, and then a hot gas operation, which is the heating mode, is conducted. | ||||||
| 189 | Air conditioning system with two compressors and method for operating the same | US10377637 | 2003-03-04 | US20040003610A1 | 2004-01-08 | Min Ho So; Won Hee Lee; Chang Min Choi; Yoon Jei Hwang; Deok Huh; Cheol Min Kim |
| Disclosed are an air conditioning system with two compressors and a method for operating the same, so as to variably change a compression capacity of a refrigerant according to the variation of cooling load. Herein, when a full operation order is inputted to the two compressors in order to satisfy increased cooling load, the first compressor is first operated, and then the second compressor having a compression capacity of a refrigerant smaller than that of the first compressor is additionally operated, so that a current peak value for operating the compressors does not exceed an allowable current range of a circuit breaker installed in a home or building, thereby safely controlling the air conditioning system and simultaneously allowing the current to be provided to other electric appliances, thus improving users' convenience. | ||||||
| 190 | Refrigerator | US10333055 | 2003-01-16 | US20030172665A1 | 2003-09-18 | Hiromune Matsuoka; Junichi Shimoda |
| This invention makes it possible to charge a refrigeration apparatus with the amount of refrigerant that the refrigeration apparatus requires at the time of onsite installation. As a result, the optimum refrigerant charging amount can always be obtained. The refrigeration apparatus is provided with a refrigeration cycle (A) in which an outdoor unit (X) equipped with a compressor (1), a condenser (2), and a receiver (3) and an indoor unit (Y) equipped with an expansion valve (4) and an evaporator (5) are connected together by a liquid pipe (8) and a gas pipe (9). The refrigeration cycle (A) is charged with refrigerant while a refrigerant charging operation state is created in which the liquid pipe (8) connecting the outdoor unit (X) to the indoor unit (Y) is filled with liquid refrigerant having a prescribed density. Refrigerant charging is ended at the point in time when, during said refrigerant charging operation, it is detected that the level (L) of the liquid inside the receiver (3) has reached a prescribed level (L0). | ||||||
| 191 | Method of refrigeration with enhanced cooling capacity and efficiency | US10373526 | 2003-02-24 | US20030167791A1 | 2003-09-11 | Lalit Chordia |
| This invention relates to a refrigeration method and processes that employ a nontoxic and environmentally benign, oil-free refrigerant in a novel vapor-compression thermodynamic cycle that includes a means for enhancing cooling capacity and efficiency. A means of controlling of the process conditions and flow of the refrigerant are provided. The refrigerant in the invention in used in a transcritical cycle. | ||||||
| 192 | Air conditioner | US10374275 | 2003-02-26 | US20030159449A1 | 2003-08-28 | Yoshiaki Takano; Satoshi Izawa; Shun Kurata |
| In the air conditioner of the present invention, both the normal cooling mode operation, in which refrigerant discharged from the compressor 1 is made to flow in the condenser 2, and the heating mode operation conducted by the hot gas bypass, in which refrigerant is made to bypass the condenser and directly flow in the evaporator 4 via the throttle 17, can be conducted. Before this heating mode operation, after the compressor is turned on for a predetermined period of time in the cooling mode, the compressor is turned off for a predetermined period of time, so that refrigerant residing in the condenser can be recovered into the hot gas cycle, and then a hot gas operation, which is the heating mode, is conducted. | ||||||
| 193 | Climate control system | US09968645 | 2001-09-29 | US06595012B2 | 2003-07-22 | Alexander P Rafalovich |
| Described is a climate control system with an air conditioning or a heat pump and a method to provide desirable temperature and humidity of indoor air. In addition to a compressor, a condenser, an evaporator, and an expansion device, the air conditioner/heat pump includes an auxiliary coil, valve means, refrigerant communication means, and control means. In hot climate the system operates in two separate modes: a conventional cooling mode and a cooling mode with enhanced dehumidification. In the conventional cooling mode the valve means direct refrigerant leaving the condenser to the expansion device and then to the auxiliary coil to absorb heat from conditioning air by refrigerant in the auxiliary coil. In this mode an extra amount of liquid refrigerant is stored in the refrigerant communication means. In the mode with enhanced dehumidification the valve means direct refrigerant leaving the condenser to the auxiliary coil to reject heat to cooled and dehumidified in the evaporator air from refrigerant in the auxiliary coil. Refrigerant in the dehumidification mode is subcooled, evaporating temperature is lower and cooling capacity of the evaporator is higher than is the conventional cooling mode. These factors increase moisture condensation on the evaporator surface. On the other hand, the temperature of conditioning air is higher than in the conventional cycle due to the heat absorbed by air from the auxiliary coil. Control means that include a thermostat and a humidistat alternate a position of the valve means to provide requested temperature and humidity of indoor air. In cold climate the system may have heating means and a humidification device. Same as in the cooling operation the thermostat and the humidistat manage operations of the heating means and the humidification device. | ||||||
| 194 | Cooling cycle and control method thereof | US09984678 | 2001-10-30 | US06523360B2 | 2003-02-25 | Toshiharu Watanabe; Torahide Takahashi; Yoshihiro Sasaki; Masahiro Iguchi; Kojiro Nakamura; Yasuhito Okawara |
| A cooling cycle with a high-pressure side operating in a supercritical area of refrigerant includes a temperature sensor for sensing a temperature of cooled refrigerant between a gas cooler and an internal heat exchanger, a pressure sensor for sensing a pressure of cooled refrigerant between the two, and a controller for controlling at least one of a compressor and a throttling device in accordance with the sensed temperature and the sensed pressure. | ||||||
| 195 | Apparatus for controlling refrigeration cycle and a method of controlling the same | US09312700 | 1999-05-17 | US06499308B2 | 2002-12-31 | Seiji Inoue; Keiji Nonami; Moriya Miyamoto |
| An apparatus for controlling a refrigeration cycle for circulating a refrigerant through a compressor 2, a heat exchanger for condensation 4, a flow rate control valve 5, and a heat exchanger for evaporation 6, connected each other, comprising: a first operation means for changing a heat exchanging capability of said heat exchanger for condensation 4, a second operation means for changing a heat exchanging capability of said heat exchanger for evaporation 6, a means for operating a running capacity for changing a running capacity of said compressor, and a control means for reducing a difference between a running condition on a high pressure side or a low pressure side of said refrigeration cycle and a target, wherein when a difference between a running condition on a high or low pressure side and its target is reduced, the control means 15 bring the running condition closer to the target, minimizes a consumption energy, and bring a temperature difference of a heat exchanging fluid between an inlet and an outlet of the heat exchanger for condensation 6 closer to a target temperature difference. | ||||||
| 196 | Vehicle air conditioner with defrosting operation of exterior heat exchanger | US09961515 | 2001-09-20 | US20020036080A1 | 2002-03-28 | Satoshi Itoh; Motohiro Yamaguchi; Yoshitaka Tomatsu; Toshio Hirata; Yasushi Yamanaka; Keita Honda; Kunio Iritani |
| In a vehicle air conditioner with a heat pump cycle having an interior heat exchanger and an exterior heat exchanger, when a frosting on a surface of the exterior heat exchanger is determined and when a temperature of hot water supplied to a heater core is equal to or higher than a predetermined temperature, the exterior heat exchanger is defrosted in a defrosting operation. Accordingly, the defrosting operation can be performed while a sufficient heating can be obtained. | ||||||
| 197 | Flow control valve for a variable displacement refrigerant compressor | US09290972 | 1999-04-13 | US06260369B1 | 2001-07-17 | Naoya Yokomachi; Kazuo Murakami; Tatsuya Koide; Toshiro Fujii |
| The flow control valve used in a variable displacement refrigerant compressor, which is incorporated in a refrigerating system, and arranged in a controlling passage fluidly interconnecting between a crank chamber and a discharge chamber or a suction chamber to regulate an opening formed in a predetermined portion of the controlling passage in a control characteristics in which when the discharge pressure of the refrigerant discharged from a discharge chamber of the compressor increases, the suction pressure of the refrigerant entering from the refrigerating system into a suction chamber increases. The flow control valve has a pressure sensing member for sensing of one of the suction and the crank-chamber pressure, and a valve element movable to increase and reduce the opening of the predetermined portion of the controlling passage on the basis of sensing of one of the suction and crank-chamber pressures by the pressure-sensing member. | ||||||
| 198 | Supercritical refrigerating cycle system | US09287814 | 1999-04-07 | US06182456B2 | 2001-02-06 | Motohiro Yamaguchi; Shin Nishida; Toshiro Fujii; Naoya Yokomachi |
| A CO2 cycle system having a variable capacity compressor is controlled even when the refrigerant delivery capacity of the variable capacity compressor changes. When the refrigerant delivery capacity of the variable capacity compressor decreases, the aperture of an electric expansion valve is fixed for a predetermined time To. When the refrigerant delivery capacity has not changed, the aperture of the electric expansion valve is controlled so that the refrigerant temperature and pressure on the outlet side of a system heat exchanger change along an optimal control line. As a result, because the refrigerant delivery capacity Qd of the compressor is controlled in correspondence with the intake pressure Ps, i.e., the pressure on the side of the evaporator, without being influenced by control of the expansion valve side, the CO2 cycle system can be adequately controlled. | ||||||
| 199 | Refrigerant circulating system | US668155 | 1996-06-21 | US5737931A | 1998-04-14 | Yoshio Ueno; Osamu Morimoto; Tomohiko Kasai; Yoshihiro Sumida |
| A refrigerant circulating system using non-azeothropic mixture as refrigerant, which comprises: a main refrigerant circuit connected by a compressor, a fore-way valve, an outdoor heat-exchanger, a first throttling device, a plurality of indoor heat-exchangers, and a low-pressure receiver; a bypass circuit diverging from the discharge portion of the compressor, and extending through a composition detecting heat-exchanger and a second throttling device to a low-pressure portion; an outdoor fun attendant of the outdoor heat-exchanger; first temperature detector to detect a refrigerant temperature at the upstream of the second throttling device; second temperature detector to detect a refrigerant temperature at the downstream of the second throttling device; first pressure detector to detect a pressure at the downstream of the second throttling device; third temperature detector to detect temperature in the main circuit between the first throttling device and the indoor heat-exchanger; forth temperature detector to detect temperature at the low-pressure portion; second pressure detector to detect the pressure at the high-pressure portion; a composition calculating device for calculating the composition of the mixture refrigerant; a main controller for controlling the number of rotation of the compressor and the number of rotation of an outdoor fun; a throttle controller for controlling the opening of the first throttling device. | ||||||
| 200 | Environmental control system | US142770 | 1993-10-26 | US5396779A | 1995-03-14 | Mark G. Voss |
| An environmental control system includes a refrigeration loop including a two-stage variable speed centrifugal compressor having a low pressure compressor in flow communication with a high pressure compressor and having an inlet and an outlet, a condenser having an inlet connected with the compressor outlet and an outlet, an evaporator having an inlet connected with the condenser outlet and an outlet connected with the compressor inlet and an expansion valve connected between the condenser outlet and the evaporator inlet, and a selectively operative bypass valve in flow communication with the low pressure compressor discharge and the compressor inlet for partially recirculating a portion of the low pressure compressor discharge back to the compressor inlet to regulate compressor flow balance. | ||||||
QQ群二维码
意见反馈
意见反馈