| 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 | Pressure control valve and vapor-compression refrigerant cycle system using the same | US11147029 | 2005-06-07 | US20050274132A1 | 2005-12-15 | 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. | ||||||
| 182 | Vapor-compression refrigerant cycle system | US10869725 | 2004-06-16 | US06945074B2 | 2005-09-20 | Yukimasa Sato; Motohiro Yamaguchi; Hiromi Ohta |
| In a vapor-compression refrigerant cycle system, a switching device is provided to switch one of a first mode where high-pressure refrigerant discharged from a compressor is directly introduced to an exterior heat exchanger and a second mode where the high-pressure refrigerant is directly introduced to an interior heat exchanger. When the second mode is set, the pressure of the high-pressure refrigerant is set higher than a predetermined pressure by a constant-pressure control valve. Accordingly, it can prevent heating capacity of the interior heat exchanger from being greatly changed even when thermal load of the vapor-compression refrigerant cycle system is changed, and heating capacity of the interior heat exchanger can be improved in the second mode. | ||||||
| 183 | Ejector cycle | US10869724 | 2004-06-16 | US06925835B2 | 2005-08-09 | Haruyuki Nishijima; Hisatsugu Matsunaga; Tooru Ikemoto; Hirotsugu Takeuchi; Takeharu Asaoka |
| In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a refrigerant outlet is provided in an evaporator at a position upper than a refrigerant inlet. Therefore, a circulation performance of refrigerant flowing in the evaporator can be improved. Accordingly, even when a pumping capacity generated in the ejector becomes smaller, a sufficient amount of refrigerant can be drawn into the ejector from the evaporator. Thus, a refrigerant amount supplied to the evaporator can be effectively increased. Further, a control unit controls an amount of cooling air supplied to a condenser based on the temperature of the cooling air, to control a refrigerant state to be introduced to the nozzle. In this case, a pressure increasing amount in the ejector can be effectively increased, and consumption power in the compressor can be effectively increased. | ||||||
| 184 | Supercritical pressure regulation of vapor compression system by regulation of expansion machine flowrate | US10462423 | 2003-06-16 | US06898941B2 | 2005-05-31 | Tobias H. Sienel |
| The expansion machine flowrate of a vapor compression system is regulated to directly control the supercritical pressure in the high pressure component of the transcritical system. The expansion machine is directly linked to a recompressor which recompresses the vapor phase of the expanded flow. By controlling the flowrate of the recompressor with a first valve, the flowrate of the expansion machine can be controlled to control the massflow rate through the expansion machine and therefore the high pressure of the system. | ||||||
| 185 | Integrated ice and beverage dispenser | US10683578 | 2003-10-10 | US20050081545A1 | 2005-04-21 | David Gist; Matthew Allison; Daniel Ziolkowski; Michael Kraus; Michael Andresen |
| An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a separate condenser package. Each of these packages has a weight that can generally by handled by one or two installers for ease of installation. The noisy compressor and condenser packages can be located remotely of the evaporator package. The maximum height distance between the evaporator package and the condenser package is greatly enhanced by the three package system. A pressure regulator operates during a harvest cycle to limit flow of refrigerant leaving the evaporator, thereby increasing pressure and temperature of the refrigerant in the evaporator and assisting in defrost thereof. The evaporator can be integrated with a beverage dispenser and an ice dispenser. | ||||||
| 186 | Ejector cycle | US10869724 | 2004-06-16 | US20040255612A1 | 2004-12-23 | Haruyuki Nishijima; Hisatsugu Matsunaga; Tooru Ikemoto; Hirotsugu Takeuchi; Takeharu Asaoka |
| In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a refrigerant outlet is provided in an evaporator at a position upper than a refrigerant inlet. Therefore, a circulation performance of refrigerant flowing in the evaporator can be improved. Accordingly, even when a pumping capacity generated in the ejector becomes smaller, a sufficient amount of refrigerant can be drawn into the ejector from the evaporator. Thus, a refrigerant amount supplied to the evaporator can be effectively increased. Further, a control unit controls an amount of cooling air supplied to a condenser based on the temperature of the cooling air, to control a refrigerant state to be introduced to the nozzle. In this case, a pressure increasing amount in the ejector can be effectively increased, and consumption power in the compressor can be effectively increased. | ||||||
| 187 | Method for operating a refrigerant circuit, method for operating a motor vehicle driving engine, and refrigerant circuit | US10300920 | 2002-11-21 | US06817193B2 | 2004-11-16 | Roland Caesar; Thomas Finkenberger; Jan Gaertner; Wolfgang Straub; Juergen Wertenbach |
| A refrigerant circuit for a motor vehicle air-conditioning system has a refrigerant compressor, a cooler connected downstream of the refrigerant compressor, a restrictor for expanding the refrigerant, and an evaporator for transferring heat to the refrigerant. Pressure in the refrigerant circuit is measured firstly on the high-pressure side and secondly on the low-pressure side. An air-conditioning system can be driven directly or indirectly by the motor vehicle driving engine. The refrigerant in the refrigerant circuit is almost completely liquefied upstream of the restrictor, so that it is easy to determine the refrigerant mass flow. As a result, it becomes possible to determine the compressor torque which is consumed by the refrigerant circuit and to control the motor vehicle driving engine accordingly. | ||||||
| 188 | Supercritical pressure regulation of vapor compression system by regulation of adaptive control | US10655970 | 2003-09-05 | US06813895B2 | 2004-11-09 | Bryan Eisenhower; Christopher G. Park; Pengju Kang; Alan Finn; Tobias Sienel |
| A vapor compression system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated through the closed circuit cycle. Preferably, carbon dioxide is used as the refrigerant. Adaptive control is employed to optimize the coefficient of performance of the vapor compression system. As the system changes over time, a model that operates the system is modified. The model is determined by an adaptive control algorithm including variable coefficients. As the model changes, the variables of the adaptive control algorithm change. A control of the gas cooler is then adjusted to regulate the high pressure of the system, and therefore the coefficient of performance. In a first example, Least Mean Squares (LMS) is used to modify the variables of the adaptive control algorithm to optimize the coefficient of performance. In a second example, the coefficient of performance is optimized by a slowly varying periodic excitation method. A third example employs triangularization to find the optimal coefficient of performance. | ||||||
| 189 | Vehicle air conditioning system | US10690262 | 2003-10-21 | US20040079096A1 | 2004-04-29 | Satoshi Itoh; Toshinobu Homan; Keiichi Kitamura |
| An automobile air conditioning system controls the high pressure of the refrigeration cycle in a wide range of airflows from a low airflow region during an intermediate period to a high airflow region. When a dehumidifying mode is selected, the target high pressure at which the cycle efficiency calculated from a gas cooler outlet refrigerant temperature is maximized is defined as a target value to a valve such as a heating variable throttle valve to control the high pressure of the refrigeration cycle to the target value. This permits control such that the cycle efficiency of the refrigeration cycle is maximized in a wide range of airflow from a low airflow region during an intermediate period to a high airflow region at a relatively low, about 10null C., outside air temperature. | ||||||
| 190 | Vehicle air conditioner with vapor-compression refrigerant cycle and method of operating the same | US10655260 | 2003-09-04 | US20040069011A1 | 2004-04-15 | Shin Nishida; Yoshitaka Tomatsu |
| An air-conditioner includes a compressor, a radiator, an evaporator, an ejector, and a separator. The compressor compresses refrigerant and variably controls an amount of the refrigerant. The radiator cools high-pressure refrigerant. The evaporator cools air blowing into a passenger compartment of a vehicle. The ejector having a nozzle jets the refrigerant at high speed. The separator separates the refrigerant into gas refrigerant and liquid refrigerant. An opening degree of a throttle of the nozzle in the ejector becomes larger so as to increase a cooling performance of the air-conditioner when the amount of the refrigerant discharged from the compressor is smaller than a maximum amount of the refrigerant. | ||||||
| 191 | Ejector cycle having compressor | US10627109 | 2003-07-25 | US20040055326A1 | 2004-03-25 | Makoto Ikegami; Hirotsugu Takeuchi |
| When an air conditioning heat load is equal to or greater than a predetermined value, the degree of throttle opening of a nozzle arrangement of an ejector is controlled in such a manner that a coefficient of performance coincides with a target value. When the air conditioning heat load is less than the predetermined value, the degree of throttle opening of the nozzle arrangement is controlled in such a manner that a flow rate of refrigerant, which passes through the nozzle arrangement, coincides with a target value. | ||||||
| 192 | Method of monitoring refrigerant level | US10012027 | 2001-12-11 | US06708508B2 | 2004-03-23 | Walter Demuth; Rainer Heilig; Volker Kirschner; Martin Kotsch; Hans-Joachim Krauss; Hagen Mittelstrass; Harald Raiser; Michael Sickelmann; Karl-Heinz Staffa; Christoph Walter |
| The invention relates to a method of refrigerant level monitoring in a refrigerant circuit of an air-conditioning or heat-pump system having a compressor and a refrigerant which may, depending on the operating point, be operated in the supercritical range. The method includes standstill level monitoring with the compressor switched off and/or in-operation level monitoring with the compressor switched on. In the case of in-operation level monitoring, the refrigerant overheat (dTü) at the evaporator is registered and, in the event of excessive overheat, it is concluded that there is underfilling. At a standstill, the pressure and temperature of the refrigerant are registered, and it is concluded that there is an improper refrigerant filling level if the pressure (pKM) lies below a minimum pressure value (pmin) or the temperature (TKM) lies above a maximum saturation temperature value (TS) with the pressure being outside a predefinable intended pressure range ([pu,po]). | ||||||
| 193 | Vapor compression refrigerant cycle | US10611184 | 2003-07-01 | US20040003615A1 | 2004-01-08 | Motohiro Yamaguchi |
| In a vapor compression refrigerant cycle for an air conditioner, as a refrigerant pressure at an operation starting time of a compressor increases, a starting target rotational speed of the compressor is reduced, and the operation of the compressor is started by the reduced starting target rotational speed. Accordingly, when the operation of the compressor is started, it can prevent the pressure of high-pressure side refrigerant from exceeding an allowable pressure of the compressor, thereby preventing a safety device of the compressor from operating. Therefore, even when the operation of the compressor is started in a high load state, a pressure abnormality is not generated in the refrigerant cycle, and operation of the air conditioner can be prevented from being stopped. | ||||||
| 194 | Quiet ice making apparatus | US10374484 | 2003-02-26 | US20030126874A1 | 2003-07-10 | Gerald J. Stensrud; Daniel Leo Ziolkowski; Matthew W. Allison; David Brett Gist |
| An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a separate condenser package. Each of these packages has a weight that can generally by handled by one or two installers for ease of installation. The noisy compressor and condenser packages can be located remotely of the evaporator package. The maximum height distance between the evaporator package and the condenser package is greatly enhanced by the three package system. A pressure regulator operates during a harvest cycle to limit flow of refrigerant leaving the evaporator, thereby increasing pressure and temperature of the refrigerant in the evaporator and assisting in defrost thereof. | ||||||
| 195 | Optimized CO2 operated air-conditioning system | US10217784 | 2002-08-13 | US06588223B2 | 2003-07-08 | Bernd Dienhart; Hans-Joachim Krauss; Hagen Mittelstrass; Karl-Heinz Staffa; Christoph Walter; Jürgen Fischer; Michael Katzenberger; Karl Lochmahr |
| An optimized CO2 air-conditioning system for a vehicle has individual components designed and/or matched to one another in such a way that if the high pressures in the high-pressure section deviate by up to ±30% from the optimum high pressures, the associated optimum performance figures are reduced by no more than 20%. The individual components include a controllable compressor, a gas cooler, an internal heat exchanger, an evaporator and an accumulator. As a result, a fixed throttle expansion member can be used between the high-pressure and low-pressure sections of the system. | ||||||
| 196 | Ejector cycle system with critical refrigerant pressure | US10201057 | 2002-07-23 | US06574987B2 | 2003-06-10 | Hirotsugu Takeuchi; Hiroshi Ishikawa; Kunio Iritani |
| In an ejector cycle system using carbon dioxide as refrigerant, an ejector decompresses and expands refrigerant from a radiator to suck gas refrigerant evaporated in an evaporator, and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be sucked into a compressor. Because refrigerant is decompressed and expanded in a super-critical area, a pressure difference during the decompression operation becomes larger, and a specific enthalpy difference becomes larger. Accordingly, energy converting efficiency in the ejector becomes higher, and efficiency of the ejector cycle system is improved. | ||||||
| 197 | Super-critical refrigerant cycle system and water heater using the same | US10263244 | 2002-10-02 | US20030061827A1 | 2003-04-03 | Hisayoshi Sakakibara |
| In a heat-pump water heater with a super-critical refrigerant cycle, a valve open degree of a decompression valve is controlled to control a pressure of high-pressure side refrigerant so that a temperature difference between refrigerant flowing out from the water-refrigerant heat exchanger and water flowing into a water-refrigerant heat exchanger is set in a predetermined temperature range. Thus, the pressure of high-pressure side refrigerant in the super-critical refrigerant cycle can be controlled, thereby suitably adjusting heat-exchange performance of an internal heat exchanger, and restricting the temperature of refrigerant discharged from the refrigerant compressor from being uselessly increased. | ||||||
| 198 | Optimized CO2 operated air-conditioning system | US10217784 | 2002-08-13 | US20030000244A1 | 2003-01-02 | Bernd Dienhart; Hans-Joachim Krauss; Hagen Mittelstrass; Karl-Heinz Staffa; Christoph Walter; Jurgen Fischer; Michael Katzenberger; Karl Lochmahr |
| An optimized CO2 air-conditioning system for a vehicle has individual components designed and/or matched to one another in such a way that if the high pressures in the high-pressure section deviate by up to null30% from the optimum high pressures, the associated optimum performance figures are reduced by no more than 20%. The individual components include a controllable compressor, a gas cooler, an internal heat exchanger, an evaporator and an accumulator. As a result, a fixed throttle expansion member can be used between the high-pressure and low-pressure sections of the system. | ||||||
| 199 | Quiet ice making apparatus | US10147441 | 2002-05-16 | US20020189270A1 | 2002-12-19 | Gerald J. Stensrud; Daniel Leo Ziolkowski; Matthew W. Allison; David Brett Gist |
| An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a separate condenser package. Each of these packages has a weight that can generally by handled by one or two installers for ease of installation. The noisy compressor and condenser packages can be located remotely of the evaporator package. The maximum height distance between the evaporator package and the condenser package is greatly enhanced by the three package system. A pressure regulator operates during a harvest cycle to limit flow of refrigerant leaving the evaporator, thereby increasing pressure and temperature of the refrigerant in the evaporator and assisting in defrost thereof. | ||||||
| 200 | Heat-pump water heater | US83710701 | 2001-04-18 | US6430949B2 | 2002-08-13 | NORO SHINYA; SAKAKIBARA HISAYOSHI; KUROKI JYOUJI; KOBAYAKAWA TOMOAKI; KUSAKARI KAZUTOSHI; SAIKAWA MICHIYUKI |
| In a heat-pump water heater, an ECU sets a target temperature difference between water flowing into a water heat exchanger and refrigerant flowing out from the water heat exchanger, and controls a valve opening degree of an expansion valve so that the target temperature difference is obtained. When a refrigerant temperature discharged from a compressor is higher than a predetermined value, the target temperature difference is increased until the refrigerant temperature discharged from the compressor becomes lower than the predetermined value. Further, when water-heating capacity is decreased due to the increase of the target temperature difference, a rotation speed of the compressor is increased. | ||||||
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