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    • 1. 发明专利
    • 空気調和装置
    • 冷气机
    • JP2014228177A
    • 2014-12-08
    • JP2013106796
    • 2013-05-21
    • 日立アプライアンス株式会社Hitachi Appliances Inc
    • NAITO KOJIURATA KAZUMIKIYOSHIDA YASUTAKA
    • F25B43/02F25B31/00
    • 【課題】アキュムレータ内に多くの液冷媒が溜まり冷凍機油と液冷媒が二層分離する条件においても、性能を落とすことなく油と液冷媒を混合させることが可能な空気調和機を提供する。【解決手段】空気調和機は、潤滑のために冷凍機油を使用し、冷凍機油を含むガス冷媒を吐出する圧縮機と、圧縮機から吐出された冷凍機油をガス冷媒から分離するオイルセパレータと、冷媒から液冷媒を分離して貯留し、ガス冷媒及び冷凍機油を圧縮機に供給するアキュムレータと、オイルセパレータで分離された冷凍機油を前記アキュムレータに流入させる返油回路と備え、返油回路は、アキュムレータに流入される冷凍機油がアキュムレータの内周面に沿って流れるように、アキュムレータの下部に接続された返油配管を備える。【選択図】図2
    • 要解决的问题:提供一种能够混合油和液体制冷剂而不降低性能的空调,即使在储存器和冷冻机油中积聚了大量液体制冷剂的条件下,液体制冷剂分离成两层。解决方案:空气 包括:使用冷冻机油的压缩机,用于润滑和排出含有冷冻机油的气体制冷剂; 将从压缩机排出的冷冻机油与气体制冷剂分离的油分离器; 储存液体制冷剂的储液器,同时将液体制冷剂与制冷剂分离并将气体制冷剂和冷冻机油供应到压缩机; 以及将由油分离器分离的冷冻机油输送到蓄能器中的回油回路。 回油回路包括连接到蓄能器的下部的回油管,使得流入蓄能器的冷冻机油沿着蓄能器的内周面流动。
    • 2. 发明专利
    • Air conditioner
    • 冷气机
    • JP2014095504A
    • 2014-05-22
    • JP2012247091
    • 2012-11-09
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • NAITO KOJIURATA KAZUMIKIYOSHIDA YASUTAKA
    • F24F11/02F25B47/02
    • PROBLEM TO BE SOLVED: To determine a frost formation state of a heat exchanger.SOLUTION: A control device of an outdoor unit holds a PQ characteristic indicating a characteristic of a static pressure and a fan air flow of an outdoor fan every fan number-of-revolutions (S1). The control device estimates the fan air flow based on the PQ characteristic corresponding to the fan number-of-revolutions and an air pressure of an air exit side of an outdoor heat exchanger (S2). The control device calculates a resistance coefficient based on the estimated fan air flow and air pressure (S3), and estimates a frost formation state of the outdoor heat exchanger by comparing the calculated resistance coefficient with a standard resistance coefficient used when frost does not stick to the outdoor heat exchanger (S4). The control device performs defrosting operation to remove the frost stuck to the outdoor heat exchanger when the control device determines that frost sticks to the outdoor heat exchanger.
    • 要解决的问题:确定热交换器的霜冻形成状态。解决方案:室外机的控制装置保持表示室外风扇的静压力和风扇风量的特性的PQ特性,每个风扇数量 (S1)。 控制装置基于与风扇转数对应的PQ特性和室外热交换器的空气出口侧的空气压力来估计风扇空气流量(S2)。 控制装置基于估计的风扇空气流量和空气压力(S3)来计算阻力系数,并且通过将计算出的阻力系数与霜冻不坚持使用的标准阻力系数进行比较来估计室外热交换器的霜冻形成状态 室外热交换器(S4)。 控制装置在控制装置判定为结霜到室外热交换器时,进行除霜运转,除去附着在室外热交换器上的霜。
    • 3. 发明专利
    • Air conditioning apparatus
    • 空调设备
    • JP2013204951A
    • 2013-10-07
    • JP2012075400
    • 2012-03-29
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • URATA KAZUMIKIYOSHIDA YASUTAKANAITO KOJITANI KAZUHIKOFURUTA HIROTAKA
    • F25B43/00F25B43/02
    • PROBLEM TO BE SOLVED: To provide an inexpensive air conditioning apparatus in which an oil distribution performance of the air conditioning apparatus configured by connecting a plurality of outdoor units is maintained without using an oil equalization pipe and a performance as an air conditioning apparatus can be improved at a maximum.SOLUTION: In an accumulator of an air conditioning apparatus, a first oil return hole is formed as an oil flow rate adjusting mechanism in a lower part of a lead-out pipe within a container. When dryness by the first oil return hole is defined as X1, a first oil return hole diameter is defined as d1, a lead-out pipe inner diameter is defined as D, a compressor maximum oil rising rate is defined as α and a coolant solubility within the accumulator is defined as Cr, the lead-out pipe inner diameter D and the first oil return hole diameter d1 of the accumulator are set to satisfy d1=A×(D), 0.1
    • 要解决的问题:提供一种便宜的空调装置,其中通过连接多个室外机而构成的空调装置的配油性能得以维持而不使用均油管,并且可以提高作为空调装置的性能 在空调装置的蓄能器中,在容器内的引出管的下部形成作为油流量调节机构的第一回油孔。 当第一回油孔的干燥被定义为X1时,第一回油孔直径定义为d1,引出管内径定义为D,压缩机最大上油速率定义为α和冷却剂溶解度 在蓄能器内定义为Cr,蓄电池的引出管内径D和第一回油孔直径d1设定为满足d1 = A×(D),0.1
    • 4. 发明专利
    • Air conditioning device
    • 空调设备
    • JP2011144941A
    • 2011-07-28
    • JP2010003554
    • 2010-01-12
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • URATA KAZUMIKIYOSHIDA YASUTAKANAITO KOJIKAWAGUCHI HIROYUKI
    • F24F11/02F24F1/28F25B1/00F25B13/00
    • PROBLEM TO BE SOLVED: To provide an air conditioning device of high installability, capable of recovering or discharging a refrigerant without connecting a plurality of outdoor units by piping and the like, in the air conditioning device composed of the plurality of outdoor units. SOLUTION: In this air conditioning device including a plurality of indoor units 200 and the plurality of outdoor units 100, the plurality of outdoor units respectively include a discharge pressure detecting means 7 for detecting a discharge-side pressure of a compressor 1, and a control means 20 for controlling opening/closing of a second outdoor expansion valve 4a disposed on the stopped second outdoor unit on the basis of a pressure value of the first discharge pressure detecting means 7b disposed on the first outdoor unit in operation, and the control means opens the second outdoor expansion valve when the pressure value of the first discharge pressure detecting means reaches a prescribed operation upper limit value or more. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决问题:为了提供高安装性的空调装置,能够通过配管等连接多个室外机而能够回收或排出制冷剂,在由多个室外机构构成的空调装置 。 解决方案:在具有多个室内单元200和多个室外单元100的空调装置中,多个室外机分别包括用于检测压缩机1的排出侧压力的排出压力检测单元7, 以及控制装置20,用于根据设置在第一室外机的第一排出压力检测装置7b的运行中的压力值来控制设置在停止的第二室外机上的第二室外膨胀阀4a的开/关, 当第一排气压力检测装置的压力值达到规定的运行上限值以上时,控制装置打开第二室外膨胀阀。 版权所有(C)2011,JPO&INPIT
    • 5. 发明专利
    • Refrigeration cycle device
    • 制冷循环装置
    • JP2009299909A
    • 2009-12-24
    • JP2008151201
    • 2008-06-10
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • MATSUMURA KENJIYOKOZEKI ATSUHIKONAKAYAMA SUSUMUINNAMI YUKIOYOSHIDA YASUTAKA
    • F25B1/00F25B7/00
    • PROBLEM TO BE SOLVED: To provide a refrigeration cycle device capable of reducing pressure loss caused in a gas connection pipe and eliminating insufficiency of capacity even if using refrigerant having large specific volume.
      SOLUTION: This refrigeration cycle device is constituted by connecting a compressor 100, a heat source side heat exchanger 130, a pressure reducing device, and a use side heat exchanger 220 with the refrigeration cycle device sequentially with pipes and switching between cooling operation and heating operation by a selector valve. This refrigeration cycle device is provided with a refrigerator using the refrigerant having specific volume being 1.5 times vapor specific volume or more at the same evaporating temperature for R410A as operation refrigerant and undercooling the refrigerant coming out of the heat source side heat exchanger when performing cooling operation.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够减少气体连接管中引起的压力损失并消除容量不足的制冷循环装置,即使使用具有大容积的制冷剂。 解决方案:该制冷循环装置由制冷循环装置依次连接压缩机100,热源侧热交换器130,减压装置和利用侧热交换器220构成,并且在制冷运转 并通过选择阀进行加热操作。 该制冷循环装置具有在作为运转制冷剂的R410A的相同蒸发温度下使用比容积为1.5倍的比容积的制冷剂的冷藏库,并且在进行制冷运转时使来自热源侧热交换器的制冷剂过冷 。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Refrigerating cycle device
    • 制冷循环装置
    • JP2009228976A
    • 2009-10-08
    • JP2008074838
    • 2008-03-24
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • URATA KAZUMIKINAKAMURA KENICHINAITO KOJIYOSHIDA YASUTAKA
    • F25B43/02
    • PROBLEM TO BE SOLVED: To suppress the rate of upward leakage of oil in a refrigerating cycle device and to improve efficiency of a refrigerating cycle during cooling and heating operations and reliability of a compressor.
      SOLUTION: The refrigerating cycle device is equipped with a compressor 1, a four-way valve 2, an outdoor side heat exchanger 3, an expansion valve 4, an indoor side heat exchanger 5, and an accumulator 6. The refrigerating cycle device further includes an oil separator 7 provided between the discharge side of the compressor 1 and the four-way valve 2, a bypass circuit 9 connecting the accumulator 6 to the oil separator 7, the bypass circuit being provided with a capillary tube 10 for controlling the oil circulation amount flowing in the bypass circuit 9. The capillary tube 10 is composed of one having distribution resistance whereby the oil circulation amount flowing in the bypass circuit is more than the oil circulation amount returning from the accumulator 6 to the suction side of the compressor.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了抑制制冷循环装置中的油向上泄漏的速度,并且提高冷却和制热运转中的制冷循环的效率以及压缩机的可靠性。 解决方案:制冷循环装置配备有压缩机1,四通阀2,室外侧热交换器3,膨胀阀4,室内侧热交换器5和蓄电池6。制冷循环 装置还包括设置在压缩机1的排出侧和四通阀2之间的分油器7,将蓄能器6连接到分油器7的旁路回路9,旁路回路设置有用于控制的毛细管10 在旁路回路9中流通的油循环量。毛细管10由具有分布阻力的流体组成,由此在旁路回路中流动的油循环量大于从储液器6返回到吸入侧的油循环量 压缩机。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • 空気調和機
    • 冷气机
    • JP2015021628A
    • 2015-02-02
    • JP2013147799
    • 2013-07-16
    • 日立アプライアンス株式会社Hitachi Appliances Inc
    • YOSHIDA YASUTAKAMATSUMURA KENJITOGUSA KENJIOTA HIROKI
    • F24F11/02F25B1/00
    • 【課題】低負荷時でも高効率で運転可能な空気調和機を提供する。【解決手段】空気調和機Sは、圧縮機101と、室外熱交換器104と、室外用膨張弁106と、室内用膨張弁107と、室内熱交換器108と、が環状に順次接続される冷媒回路と、設定温度と室内温度との差が所定値以下になったとき、圧縮機101を連続運転する場合の消費電力と、圧縮機101を断続運転する場合の消費電力と、をそれぞれ予測し、小さいほうの消費電力に対応する運転を実行する制御装置3と、を備える。【選択図】図1
    • 要解决的问题:提供一种能够在低负载条件下高效率地运行的空调。解决方案:空调S包括:冷却回路,其中压缩机101,室外热交换器104,室外膨胀阀106 室内膨胀阀107和室内热交换器108依次连接成环状, 以及控制装置3,当设定温度和室内温度之间的差为预定值以下时,分别预测在连续运转压缩机101的情况下的功率消耗和在间歇地操作压缩机101的情况下的功率消耗 并且执行对应于较小功耗的操作。
    • 8. 发明专利
    • 空気調和機の制御装置
    • 空调控制器
    • JP2014238179A
    • 2014-12-18
    • JP2013119439
    • 2013-06-06
    • 日立アプライアンス株式会社Hitachi Appliances Inc
    • URATA KAZUMIKIYOSHIDA YASUTAKANAITO KOJITANI KAZUHIKO
    • F24F11/02F25B1/00
    • 【課題】必要最小限の消費電力量で全ての空調場の快適性を維持可能な空気調和機の制御装置を提供する。【解決手段】空気調和機の制御装置は、複数台の室内機毎に、室内機の設定温度及び吸込空気温度に基づいて、暖房運転の場合は、室内熱交換器における冷媒の目標凝縮温度を、冷房運転の場合は、室内熱交換器における冷媒の目標蒸発温度を演算し、暖房運転の場合は、演算手段により演算された複数台の室内機の目標凝縮温度の最大値を、冷房運転の場合は、演算手段により演算された複数台の室内機の目標蒸発温度の最小値を、圧縮機を制御するための制御目標値として設定し、暖房運転の場合は、室内熱交換器における冷媒の凝縮温度が制御目標値となるように、圧縮機の周波数を制御し、冷房運転の場合は、室内熱交換器における冷媒の蒸発温度が前記制御目標値となるように、圧縮機の周波数を制御する。【選択図】図2
    • 要解决的问题:提供一种能够以最小的所需功率消耗在所有空调位置保持舒适性的空调控制器。解决方案:空调控制器在室内热交换器的情况下计算室内热交换器中的制冷剂的目标冷凝温度 基于室内机的设定温度和进气温度,在室内热交换器的制冷剂的制冷运转和目标蒸发温度的情况下, 设定在加热运转的情况下由运算装置算出的多个室内机的目标冷凝温度的最大值,以及在运算装置计算出的多个室内机的目标蒸发温度的最小值的情况下, 作为用于控制压缩机的控制目标值的冷却操作; 并且控制压缩机的频率,使得室内热交换器中的制冷剂的冷凝温度等于在加热操作的情况下的控制目标值,并且控制压缩机的频率使得制冷剂的蒸发温度 在制冷运转的情况下,在室内热交换器中等于控制目标值。
    • 9. 发明专利
    • Air conditioner
    • 冷气机
    • JP2014149105A
    • 2014-08-21
    • JP2013016944
    • 2013-01-31
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • YOSHIDA YASUTAKATOGUSA KENJIMATSUMURA KENJIOTA HIROKIENDO MICHIKO
    • F24F11/02
    • PROBLEM TO BE SOLVED: To acquire an air conditioner capable of improving comfort while suppressing power consumption.SOLUTION: An air conditioner comprises: an outdoor unit having a compressor capable of controlling a rotational frequency, an outdoor heat exchanger and an outdoor fan for blowing air to the outdoor heat exchanger; and an indoor unit having an indoor heat exchanger and an indoor fan for blowing air to the indoor heat exchanger. A refrigeration cycle is configured by connecting the outdoor unit and the indoor unit by piping and making a sealed cooling medium circulate. Also, the air conditioner includes an arithmetic device for determining whether or not a preheating operation is necessary, the arithmetic device performing the preheating operation control when the preheating operation is executed. The arithmetic device is configured in such a manner that it calculates in advance power consumption quantity 505 and 506 when the preheating operation is performed and power consumption quantity 504 when the preheating operation is not performed, and determines whether or not the preheating operation is necessary based on the calculation result.
    • 要解决的问题:获取能够在抑制电力消耗的同时提高舒适性的空调。解决方案:空调包括:具有能够控制转速的压缩机的室外机,室外热交换器和用于吹风的室外风扇 到室外热交换器; 以及具有室内热交换器的室内机和向室内热交换器吹送空气的室内风扇。 通过配管连接室外机和室内机构成制冷循环,使密封的冷却介质循环。 此外,空调机包括用于确定是否需要预热操作的运算装置,运算装置在执行预热操作时执行预热操作控制。 运算装置的结构是,在进行预热运转时,预先计算消耗电力量505,506,在不进行预热运转的情况下计算消耗电力量504,根据需要来判断是否需要预热运转 对计算结果。
    • 10. 发明专利
    • Air conditioner and outdoor heat exchanger used in air conditioner
    • 空气调节器和室外热交换器
    • JP2014126322A
    • 2014-07-07
    • JP2012284959
    • 2012-12-27
    • Hitachi Appliances Inc日立アプライアンス株式会社
    • URATA KAZUMIKINAITO KOJIYOSHIDA YASUTAKA
    • F25B41/00F24F1/18F28D1/047F28F27/02
    • PROBLEM TO BE SOLVED: To suppress the increase of manufacturing cost even if the number of paths of a heat exchanger increases.SOLUTION: In an air conditioner, an outdoor unit including: a compressor; one outdoor heat exchanger 5; and an outdoor expansion valve is connected to an indoor unit by a liquid connection piping element and a gas connection piping element. The outdoor heat exchanger includes: a plurality of plate fins; a plurality of heat transfer tubes; and a liquid distributor and a gas distributor for integrating the heat transfer tubes into a plurality of paths. The number of paths on the gas distributor side is equal to or larger than twofold the number of paths on the liquid distributor side. The one outdoor heat exchanger is divided into a plurality of outdoor heat exchangers 6 and 7. Each of the outdoor heat exchangers 6 and 7 includes: a plurality of plate fins 61 and 71; a plurality of heat transfer tubes 62 and 72 orthogonal to the plate fins, respectively; liquid distributors 24 and 25 and gas distributors 26 and 27 for integrating the heat transfer tubes into a plurality of paths. The number of paths on the liquid distributor side including those of the divided outdoor heat exchangers is set larger than a value obtained by dividing "the number of the heat transfer tubes of the outdoor heat exchanger before division by 4".
    • 要解决的问题:为了抑制制热成本的增加,即使热交换器的路径数量增加也是如此。解决方案:在空调器中,包括:压缩机; 一个室外热交换器5; 并且室外膨胀阀通过液体连接管道元件和气体连接管道元件连接到室内单元。 室外热交换器包括:多个板翅; 多个传热管; 以及用于将传热管整合到多个路径中的液体分配器和气体分配器。 气体分配器侧的路径数量等于或大于液体分配器侧的路径数量的两倍。 一个室外热交换器被分成多个室外热交换器6,7,每个室外热交换器6和7包括:多个板翅61和71; 分别与板翅片正交的多个传热管62和72; 液体分配器24和25以及用于将传热管整合到多个路径中的气体分配器26和27。 包括分开的室外热交换器的液体分配器侧的路径数被设定为大于将“室外热交换器的传热管的数量除以4”所得到的值。