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    • 1. 发明专利
    • Heat source system, control method therefor, and program therefor
    • 热源系统,其控制方法及其程序
    • JP2012145263A
    • 2012-08-02
    • JP2011003409
    • 2011-01-11
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIYAJIMA YUJIKIKUCHI HIRONARIMIZUSHIMA TAKANARIOSHIMA NOBORUSUZUKI KOJI
    • F25B1/00F24F11/02
    • F25D17/02F25B2400/06Y02P80/156
    • PROBLEM TO BE SOLVED: To provide a heat source system which improves system COP without lowering the operating efficiency of a cold source, and to provide a control method therefor and a program therefor.SOLUTION: In the heat source system N1, pumps P, P3 for sending a heat medium to at least either of a cold source R for cooling the heat medium or to a heat exchanger for heat exchanging of the cooled heat medium with a load 1 and the cold source R and the heat exchanger of the load 1 are connected with tubes r1, r2 through which the heat medium is made to flow. The heat source system includes load heating quantity measuring means 3, 4 for measuring the heating quantity wherein the heat medium is heat-exchanged with the load 1, a cold water circulating temperature measuring means 4 for measuring the temperature of the heat medium R which is heat-exchanged with the load 1 to be circulated to the cold source, and a first control means 2 for lowering the temperature setting value of the heat medium at the exit of the cold source R when the temperature of the head medium is lowered than the temperature setting value and a difference from the temperature setting value of the heat medium at the exit of the cold source R is lowered than a prescribed setting value.
    • 要解决的问题:提供一种在不降低冷源的运行效率的情况下提高系统COP并提供其控制方法及其程序的热源系统。 解决方案:在热源系统N1中,将用于将热介质发送到用于冷却热介质的冷源R或用于冷却的热介质的热交换器的热源的至少一个的泵P,P3 负载1和冷源R和负载1的热交换器与导热介质流过的管r1,r2连接。 热源系统包括用于测量加热量与负载1进行热交换的加热量的负载加热量测量装置3,4,用于测量热介质R的温度的冷水循环温度测量装置4, 与负载1进行热交换以循环到冷源,以及第一控制装置2,用于当头部介质的温度低于冷源R的温度时,降低冷源R的出口处的热介质的温度设定值 与冷源R的出口处的热介质的温度设定值的差低于规定的设定值。 版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Cooling system and cooling method
    • 冷却系统和冷却方法
    • JP2010286126A
    • 2010-12-24
    • JP2009138088
    • 2009-06-09
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIYAJIMA YUJIKIKUCHI HIRONARIMIZUSHIMA TAKANARITAKENAMI TOSHITOHANAOKA HIDEO
    • F24F5/00
    • PROBLEM TO BE SOLVED: To provide a cooling system and a cooling method capable of stably providing a desired cooling capacity of a cooling tower even under a condition of a low outside air temperature or a low cooling load.
      SOLUTION: A cooling circuit 100 includes m-pieces (m≥1) of cooling towers 20, n-pieces (n≥1) of refrigerating machines 40, a circulation pipe 70 connecting the cooling towers 20 to the refrigerating machines 40, a bypass pipe 72 sending back cooling water having passed through the cooling tower 20 to the other cooling tower 20 without passing through the refrigerating machines 40, and a bypass pump 74 adjusting a flow rate of the cooling water flowing through the bypass pipe 72. In a controller 50, the bypass pump 74 is controlled so that a flow rate of the cooling water flowing into the cooling tower 20 becomes a minimum cooling water flow rate of the cooling tower 20 or larger based on a measurement result of a flowmeter 78. By this, since a sufficient flow rate of the cooling water with respect to a capacity of the cooling tower 20 can be sent to the cooling tower 20, the desired cooling capacity of the cooling tower 20 can be stably provided even under a condition of a low outside air temperature or a low cooling load.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:即使在外部空气温度低或冷却负荷低的条件下,也能够提供能够稳定地提供冷却塔的期望冷却能力的冷却系统和冷却方法。 解决方案:冷却回路100包括冷却塔20的m片(m≥1),冷冻机40的n片(n≥1),将冷却塔20连接到冷藏机40的循环管70 将通过冷却塔20的冷却水不经过冷冻机40送回到另一个冷却塔20的旁通管72,以及调节流经旁通管72的冷却水的流量的旁通泵74。 在控制器50中,控制旁路泵74,使得流入冷却塔20的冷却水的流量根据流量计78的测量结果变为冷却塔20的最小冷却水流量。 由此,由于能够将冷却水相对于冷却塔20的容量的足够的流量送到冷却塔20,所以即使在冷却塔20的条件下也可以稳定地设置冷却塔20的所需冷却能力 低o 空气温度或低冷却负荷。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Heat source system
    • 热源系统
    • JP2012127573A
    • 2012-07-05
    • JP2010279428
    • 2010-12-15
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIZUSHIMA TAKANARIKIKUCHI HIRONARIMIYAJIMA YUJI
    • F24F11/02
    • PROBLEM TO BE SOLVED: To provide a heat source system whose total power consumption becomes minimum, and to provide a method of controlling the same.SOLUTION: The heat source system 10 includes: a heat pump; an underground heat exchanger 20; a cooling tower 30; a heat source water pump; a switching means of switching and connecting one of the cooling tower and the heat exchanger in a parallel or series operation mode; a simulator 82 which calculates a heat pump load and a heat source water load, selects one operation mode of cooling capability or heating capability above the heat source water load, and calculates optimum values of a heat source water flow rate ratio of the cooling tower, a heat source water flow rate ratio of the heat exchanger, and an air capacity ratio of a cooling tower fan, which minimize a system power consumption, among system power consumptions calculated by varying the heat source water flow rate ratio of the cooling tower, the heat source water rate ratio of the heat exchanger, and the air capacity ratio of the cooling tower fan 32; and a control means 80 of performing control to a flow rate ratio of the cooling tower or the heat exchanger and an air capacity ratio of the cooling tower fan based upon the minimum system power consumption.
    • 要解决的问题:提供总功耗最小的热源系统,并提供一种控制该热源系统的方法。 解决方案:热源系统10包括:热泵; 地下热交换器20; 冷却塔30; 热源水泵; 一个并联或串联操作模式切换和连接冷却塔和热交换器之一的切换装置; 计算热泵负荷和热源水负荷的模拟器82选择冷却能力或热源水负荷以上的加热能力的一种运转模式,计算冷却塔的热源水流量比的最佳值, 热交换器的热源水流量比以及通过改变冷却塔的热源水流量比计算的系统功率消耗之中的使系统功率消耗最小化的冷却塔风扇的空气容量比, 热交换器的热源水比率和冷却塔风扇32的空气容量比; 以及基于最小系统功率消耗来对冷却塔或热交换器的流量比进行控制和冷却塔风扇的空气容量比的控制装置80。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • Facility and method of producing cold water
    • 生产冷水的设施和方法
    • JP2011247433A
    • 2011-12-08
    • JP2010117798
    • 2010-05-21
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIYAJIMA YUJIKIKUCHI HIRONARIMIZUSHIMA TAKANARIFUKUI ITSUSHITAKENAMI TOSHITO
    • F24F11/02F25B1/00
    • Y02B30/542
    • PROBLEM TO BE SOLVED: To provide a facility and method of producing cooling water promoting reduction in energy consumption.SOLUTION: This facility for producing cold water includes: a cooling tower cooling water and cold water within a built-in heat exchanger; a refrigerating machine receiving cold of the cooling water in the cooling tower; a refrigerating machine operation line circulating the cooling water in the cooling tower in a cooling water system of the refrigerating machine and circulating the cold water of the refrigerating machine in a cold water system on the load side; a free cooling operation line circulating the cooling water in the cooling tower and circulating the cold water of the heat exchanger in the cold water system on the load side; a cooling water pump arranged in the cooling water system and circulating the cooling water; an operation line change-over valve switching between the both operation lines; a sensor measuring outside air and the operating state of the facility; and a control section controlling the change-over valve based on the measurement value by the sensor and operating the cooling water pump at a flow rate corresponding to the switched operation line.
    • 要解决的问题:提供减少能量消耗降低冷却水的设备和方法。 解决方案:这种生产冷水的设备包括:冷却塔冷却水和内置热交换器内的冷水; 冷却塔中的冷却水冷的冷冻机; 制冷机操作线使冷却塔中的冷却水循环到冷藏机的冷却水系统中,并将冷藏机的冷水循环到负荷侧的冷水系统中; 一个自由冷却操作线使冷却塔中的冷却水循环,并使冷却水系统中热交换器的冷水循环在负载侧; 冷却水泵布置在冷却水系统中并使冷却水循环; 操作线切换阀在两条操作线之间切换; 测量外部空气的传感器和设施的操作状态; 以及控制部,其基于所述传感器的测量值来控制所述切换阀,并以对应于所述切换操作线的流量操作所述冷却水泵。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Cooling system and cooling method
    • 冷却系统和冷却方法
    • JP2009216375A
    • 2009-09-24
    • JP2009030939
    • 2009-02-13
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • KIKUCHI HIRONARINAKAJIMA KENICHIHANAOKA HIDEOFUKUI ITSUSHIMIZUSHIMA TAKANARIMIYAJIMA YUJI
    • F28F27/00
    • PROBLEM TO BE SOLVED: To reduce the total of consumption power of fan power of a cooling tower and consumption power of pump power when cooling by using free cooling of the cooling tower. SOLUTION: The cooling system is equipped with: a simulator 51 for simulating obtaining a total value of consumption power of a cooling tower fan 10 and pumps 2, 4 by using at least a cooling water temperature of a cooling tower outlet 1a and a cold water temperature of a first heat exchanger outlet 11a as input values; an optimal value obtaining part 52 for changing the input values of the cooling water temperature and the cold water temperature and inputting them in the simulator 51, and obtaining the cooling water temperature and the cold water temperature as optimal values in which the total value of the consumption power becomes minimum from the result of the simulation; and a control value setting part 53 for setting the actual cooling water temperature and the cold water temperature to the optimal values obtained by the optimal value obtaining part 52. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过使用冷却塔的自由冷却来降低冷却塔风扇功率的总功耗和冷却时的功率消耗功率。 解决方案:冷却系统配备有:模拟器51,用于模拟通过使用至少冷却塔出口1a的冷却水温度获得冷却塔风扇10和泵2,4的消耗功率的总值,以及 第一热交换器出口11a的冷水温度作为输入值; 用于改变冷​​却水温度和冷水温度的输入值并将其输入到模拟器51中的最佳值获得部52,并且获得冷却水温度和冷水温度作为最佳值,其中, 消耗功率从模拟结果最小化; 以及用于将实际冷却水温度和冷水温度设定为由最佳值获得部件52获得的最佳值的控制值设定部件53.权利要求:(C)2009,JPO&INPIT
    • 6. 发明专利
    • Absorption type dehumidifying method
    • 吸收式除湿方法
    • JP2008296200A
    • 2008-12-11
    • JP2007148344
    • 2007-06-04
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIYAJIMA YUJIWATANABE HIROYUKISAKUMA MASAYOSHI
    • B01D53/26
    • PROBLEM TO BE SOLVED: To provide an absorption type dehumidifying method which can easily follow climate change of a dehumidifying load and a regeneration load. SOLUTION: A dehumidification system A dehumidifying air 20A to be treated by circulating an absorbing solution to a dehumidifier 10A and to a regenerator 12A, and a dehumidification system B further dehumidifying air 20B to be treated, dehumidified in the dehumidification system A, by circulating the absorbing solution to a dehumidifier 10B and to a regenerator 12B are connected in two stages. When the dehumidifying load and the regeneration load are high, operation is carried out so that the equilibrium vapor pressure of the absorbing solution 21B supplied to the dehumidifier 10B in the subsequent stage dehumidification system B is lowered than that of the absorbing solution 21A supplied to the dehumidifier 10A in the preceding stage dehumidification system A. When the dehumidifying load and the regeneration load are low, for example, the preceding stage dehumidification system A is stopped. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够容易地跟随除湿负荷和再生负荷的气候变化的吸收式除湿方法。 除湿系统通过将吸收溶液循环到除湿器10A和再生器12A来进行处理的除湿空气20A以及除湿系统B,对除湿系统A中除湿的待处理空气20B进行除湿, 通过将吸收溶液循环到除湿器10B和再生器12B两级连接。 当除湿负荷和再生负荷高时,进行操作,使得供给到后续除湿系统B中的除湿器10B的吸收溶液21B的平衡蒸气压比供给到除湿系统B的吸收液21A的平均蒸气压低 前段除湿系统A中的除湿器10A。当除湿负载和再生负荷低时,例如,前级除湿系统A停止。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • Cooling system
    • 冷却系统
    • JP2013019563A
    • 2013-01-31
    • JP2011151122
    • 2011-07-07
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • KITAJIMA KEIICHIKIKUCHI HIRONARIMIYAJIMA YUJI
    • F28F27/00
    • F28F27/00F28C1/00Y02B30/748
    • PROBLEM TO BE SOLVED: To provide a cooling system in which the offset of drive frequency of a fan of a cooling tower caused by a change in load or the like is quickly dissolved.SOLUTION: The cooling system 100 includes: a cooling tower 1 that cools cooling water by means of free cooling; an inverter-driven cooling fan 6 that is disposed on the cooling tower 1; and a heat exchanger 2 that exchanges heat between cooling water cooled by the cooling tower 1 and cold water with a temperature raised by a load device 3. In addition, the cooling system includes a simulator that sets the bias frequency of the cooling fan 6 for each wet-bulb temperature of the outside air and for each load of the load device 3 and a control device 71 that is equipped with a calculation control part 72 for calculating the actual measurement of the wet-bulb temperature and the actual measurement of the load, and outputs a bias frequency corresponding to the actual measured value for the wet-bulb temperature and the actual measured value for the load as the drive frequency of the cooling fan 6 among the bias frequencies set by the simulator.
    • 要解决的问题:提供一种冷却系统,其中由于负载等的变化引起的冷却塔的风扇的驱动频率的偏移迅速消失。 解决方案:冷却系统100包括:通过自由冷却冷却冷却水的冷却塔1; 设置在冷却塔1上的逆变器驱动的冷却风扇6; 以及热交换器2,其在由冷却塔1冷却的冷却水与通过负载装置3升高的温度的冷水之间进行热交换。另外,冷却系统包括将冷却风扇6的偏置频率设定为 外部空气的每个湿球温度和负载装置3的每个负载以及装备有用于计算湿球温度的实际测量的计算控制部分72和负载的实际测量的控制装置71的控制装置71 ,并且输出与由模拟器设定的偏置频率相对应的湿球温度的实际测量值和负载的实际测量值作为冷却风扇6的驱动频率的偏置频率。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Air conditioning system
    • 空调系统
    • JP2012112649A
    • 2012-06-14
    • JP2012061780
    • 2012-03-19
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • KIKUCHI HIRONARIHANAOKA HIDEOOSHIMA NOBORUFUKUI ITSUSHIMAEYAMA AKIRAMIYAJIMA YUJINAKAJIMA KENICHI
    • F24F11/02
    • PROBLEM TO BE SOLVED: To provide an air conditioning system having a plurality of heat source machines and capable of utilizing control of the number of the operated heat source machines in minimizing coefficient of evaluation to improve efficiency related to saving of energy consumption.SOLUTION: The air conditioning system controls the number of operated heat source machines for setting the number of a plurality of heat source machines according to loads specified by air conditioning conditions. The control for the number of operated heat source machines includes load correlation operated number setting processing for changing the number of operated heat source machines by determining appropriateness of the number of operated heat source machines in relation to a current load, and evaluation function correlation operated machine number setting processing for obtaining an evaluation function about consumption energy of each of the current number of the operated heat source machines, the increased number of the operated heat source machines, and the decreased number of the operated heat source machines, and changing the number of operated heat source machines to minimize the evaluation function.
    • 要解决的问题:提供一种具有多个热源机的空调系统,并且能够利用所操作的热源机的数量的控制来最小化评估系数,以提高与节能相关的效率。 解决方案:空调系统根据空调条件规定的负荷来控制用于设定多个热源机的数量的操作热源机的数量。 操作热源机的数量的控制包括通过确定操作的热源机的数量相对于当前负载的适当性来改变操作的热源机的数量的负载相关操作数设定处理以及评价功能相关操作机 用于获得关于当前操作的热源机的每一个的消耗能量的评估功能的数量设定处理,所操作的热源机的数量的增加以及所操作的热源机的数量的减少, 操作热源机器,以最小化评估功能。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Air conditioning system and its control method
    • 空调系统及其控制方法
    • JP2011247564A
    • 2011-12-08
    • JP2010124134
    • 2010-05-31
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • MIZUSHIMA TAKANARIKIKUCHI HIRONARIMIYAJIMA YUJI
    • F24F11/02F24F3/00F24F5/00F24J3/08F25B30/06
    • Y02B10/40Y02B30/745Y02E10/10
    • PROBLEM TO BE SOLVED: To provide an air conditioning system that is suppressed in the power consumption of an air conditioner to the minimum using a heat pump with underground heat as a heat source, and to provide its control method.SOLUTION: The air conditioning system 10 includes: a heat exchanger using the underground heat; a cold/warm water pump 50 which circulates cold/warm water to the heat exchanger; an inverter 52 which changes the number of revolutions of the cold/warm water pump 50; the air conditioner 20 which cools or warms the heat exchanger by using the cold/warm water circulating in the heat exchanger; a first detector for calculating an in-chamber load of the air conditioner 20; a second detector for calculating a cold/warm water load; a simulator 62 which calculates system COP by calculating the in-chamber load, the cold/warm water load, the first power consumption of the cold/warm water pump 50, and the second power consumption of the air conditioner 20, and selects a clod/warm water flow rate which becomes the maximum in the system COP; and a controller 64 which controls the cold/warm water pump 50 by using a frequency setting value of the inverter 52 of the cold/warm water flow rate which becomes the maximum in the system COP.
    • 要解决的问题:提供一种使用具有地下热作为热源的热泵将空调的功率消耗抑制到最小的空调系统,并提供其控制方法。 解决方案:空调系统10包括:使用地下热的热交换器; 冷/热水泵50,其将冷/温水循环到热交换器; 改变冷/暖水泵50的转数的逆变器52; 空气调节器20通过使用在热交换器中循环的冷/热水冷却或加热热交换器; 用于计算空调20的室内负载的第一检测器; 用于计算冷/暖水负荷的第二检测器; 模拟器62,其通过计算室内负载,冷/暖水负荷,冷/热水泵50的第一功率消耗和空调20的第二功率消耗来计算系统COP,并且选择洗涤 /系统COP中最大的温水流量; 以及通过使用在系统COP中变为最大的冷/热水流量的逆变器52的频率设定值来控制冷/暖水泵50的控制器64。 版权所有(C)2012,JPO&INPIT