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1. 发明专利

JP2004361081A Heat pump type hot water supply device 有权
公开(公告)号：JP2004361081A
公开(公告)日：2004-12-24
申请号：JP2004272649
申请日：2004-09-21
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： SAITO MASANOBU , ENYA YOSHINORI , KOYAMA KIYOSHI , TAKIZAWA SADAHIRO , SHIKICHI CHIAKI , ISHIGAKI SHIGEYA , IZAKI HIROKAZU , MUKOYAMA HIROSHI , KUWABARA OSAMU , YAMAZAKI HARUHISA , IMAI SATORU
IPC分类号： F24H1/00 , F24D17/00
摘要： PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device capable of enhancing energy efficiency by effectively using hot water existing in a middle part of a hot water supply tank. SOLUTION: A heat pump refrigerant circuit X and a hot water service water circulating circuit N are provided. The heat pump refrigerant circuit X is composed by connecting a compressor 12, a refrigerant-water heat exchanger 27, and a heat pump heat exchanger 18 in a loop shape using a refrigerant piping 19, and uses carbon dioxide as a refrigerant. The hot water service water circulating circuit N is composed by connecting the hot water supply tank 26, a circulating pump 34, and the refrigerant-water heat exchanger 27 in a loop shape using a hot water service water piping 36, heats water existing at the bottom part of the hot water supply tank 26 by circulating the water to the refrigerant-water heat exchanger 27, returns the hot water heated by the refrigerant-water heat exchanger 27 to the top part of the hot water supply tank 26, and can store the hot water in the hot water supply tank 27. The hot water taken out of the top part of the hot water supply tank 26, the hot water of a middle temperature region taken out of the middle part of the hot water supply tank, and city water fed from a city water piping 62 can be supplied to a use part 13. COPYRIGHT: (C)2005,JPO&NCIPI

2. 发明专利

JP2005098651A Heat pump water heater 有权
标题翻译：热泵水加热器
公开(公告)号：JP2005098651A
公开(公告)日：2005-04-14
申请号：JP2003335357
申请日：2003-09-26
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , KURAMOCHI KAZUYOSHI
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To provide a heat pump water heater capable of improving the heating performance in reheating operation, by allowing the hot water of high temperature heated by a heat pump refrigerant circuit to flow directly to a heating part side of a heat exchanger for reheating, and reheating the bathtub water after heated by the heat exchanger for reheating by the hot water of high temperature at an upper part of the hot water storage tank. SOLUTION: This heat pump water heater comprises the hot water storage tank, the heat pump refrigerant circuit, a hot water storage circulating passage, a bathtub water reheating circuit, a flow channel switching means 27 mounted on the way of the hot water storage circulating passage, at a downstream with respect to a refrigerant/water heat exchanger 6, a tank heat exchanging part 15A mounted on an upper part in the hot water storage tank, and a heating circuit for reheating 28 connected with the flow channel switching means at its starting end and allowing the hot water of high temperature heated by the refrigerant/water heat exchanger to flow to the heat exchanger for reheating in reheating operation. The reheating circuit circulates the bathtub water after heated by a heated part of the heat exchanger for reheating to the tank heat exchanging part to reheat the bathtub water by the hot water of high temperature at the upper part in the hot water storage tank, whereby a reheating operation time in the reheating operation can be shortened. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种能够提高再热运转中的加热性能的热泵热水器，通过使由热泵制冷剂回路加热的高温热水直接流到加热部分侧用于再加热的热交换器，并且通过热交换器加热之后对浴缸水进行再加热，以便在热水储存箱的上部由高温热水再加热。
解决方案：该热泵热水器包括热水储存箱，热泵制冷剂回路，热水储存循环通道，浴缸水再加热回路，安装在热水路上的流路切换装置27 存储循环通道，相对于制冷剂/水热交换器6的下游，安装在热水储存箱的上部的罐热交换部15A和与流路切换装置连接的再加热用加热回路28 在其起始端，允许由制冷剂/水热交换器加热的高温热水流向热交换器，以在再加热操作中再加热。再加热回路在加热热交换器的加热部分之后循环浴缸水，再加热到储罐热交换部分，通过热水储存箱上部的高温热水对浴缸水进行加热，由此可以缩短再加热运转中的再加热运转时间。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005037124A Heat pump type hot water supply apparatus 审中-公开
标题翻译：热泵型热水机
公开(公告)号：JP2005037124A
公开(公告)日：2005-02-10
申请号：JP2004272652
申请日：2004-09-21
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： SAITO MASANOBU , ENYA YOSHINORI , KOYAMA KIYOSHI , TAKIZAWA SADAHIRO , SHIKICHI CHIAKI , ISHIGAKI SHIGEYA , IZAKI HIROKAZU , MUKOYAMA HIROSHI , KUWABARA OSAMU , YAMAZAKI HARUHISA , IMAI SATORU
IPC分类号： F24H1/00 , F24D17/00
摘要： PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply apparatus allowing increase of energy efficiency by effectively using hot water in an intermediate part inside a hot water supply tank.
SOLUTION: This heat pump type hot water supply apparatus has: a heat pump refrigerant circuit X using carbon dioxide as a refrigerant; and a hot water-supplying water circulation circuit N circulating water in a bottom part inside the hot water supply tank through a refrigerant-water heat exchanger to heat it, and returning hot water heated by the refrigerant-water heat exchanger to a top part of the hot water supply tank to store it in the hot water supply tank. The heat pump type hot water supply apparatus is provided with a top part hot water discharge line 40 for taking out high-temperature hot water in the top part inside the hot water supply tank, and an intermediate part hot water discharge line 33 for taking out intermediate-temperature hot water in the intermediate part inside the hot water supply tank, and is formed with a juncture part G making the top part hot water discharge line and the intermediate part hot water discharge line join each other. Hot water after passage of the juncture part and city water supplied from a city water line 62 are mixed by a mixing control valve 57 provided on the downstream side of the juncture part to supply it to a use part.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种热泵式热水供应装置，其能够通过在热水供给箱内的中间部分中有效地使用热水来提高能量效率。解决方案：该热泵式热水供给装置具有：使用二氧化碳作为制冷剂的热泵制冷剂回路X; 以及热水供给水循环回路N，通过制冷剂 - 水热交换器使热水供给箱内的底部循环水加热，并将由制冷剂 - 水热交换器加热的热水返回到热水供应罐将其储存在热水供应罐中。热泵式热水供给装置设置有用于取出热水供给箱内的上部的高温热水的顶部热水排出管线40和用于取出的中间部分热水排出管线33 在热水供给箱内的中间部分的中间温热水，形成有使顶部热水排出管路和中间部分的热水排出管路相互连接的接合部G。从城市供水管线62供应的接合部分和城市供水之后的热水通过设置在接合部分下游侧的混合控制阀57混合，以将其供应到使用部分。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005024240A Heat pump type hot-water supply device 审中-公开
标题翻译：热泵型热水设备
公开(公告)号：JP2005024240A
公开(公告)日：2005-01-27
申请号：JP2004272659
申请日：2004-09-21
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： SAITO MASANOBU , ENYA YOSHINORI , KOYAMA KIYOSHI , TAKIZAWA SADAHIRO , SHIKICHI CHIAKI , ISHIGAKI SHIGEYA , IZAKI HIROKAZU , MUKOYAMA HIROSHI , KUWABARA OSAMU , YAMAZAKI HARUHISA , IMAI SATORU
IPC分类号： F24H1/00 , F24D17/00
摘要： PROBLEM TO BE SOLVED: To provide a heat pump type hot-water supply device capable of increasing the energy efficiency by effectively utilizing a hot water at the middle part in a hot water tank.
SOLUTION: This heat pump type hot-water supply device is provided with a heat pump refrigerant circuit X using carbon dioxide as a refrigerant and a water circulation circuit N for hot water supply which circulates water at the bottom part in the hot water tank 26 to a refrigerant-to-water heat exchanger 27 and heats and returns the hot water heated by the refrigerant-to-water heat exchanger 27 to the top of the hot water tank 26 to store the hot water in the hot water tank 27. And, it is constituted so that a top hot water delivery pipe 40 is connected to the top 26A of the hot water tank and an intermediate hot water delivery pipe 33 is connected to the intermediate part 26C of the hot water tank, and the top hot water delivery pipe and the intermediate hot water delivery pipe are merged at a merging part G, and a mixing control valve 57 mixing hot water from the hot-water supply pipe with city water from a city water pipe 62 is installed in the hot water pipe 59 on the downstream side from the merging part.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够通过有效地利用热水箱中部的热水来提高能量效率的热泵式热水供给装置。
解决方案：该热泵式热水供给装置具有使用二氧化碳作为制冷剂的热泵制冷剂回路X和用于热水供给的水循环回路N，其在热水中的底部循环水罐26向制冷剂 - 水热交换器27供热，并将由制冷剂 - 水热交换器27加热的热水加热并返回到热水箱26的顶部，以将热水储存在热水箱27中并且，其构造为使顶部热水输送管40连接到热水箱的顶部26A，并且中间热水输送管33连接到热水箱的中间部26C，顶部热水输送管和中间热水输送管在合流部G合并，将来自热水供给管的热水与城市供水管62的自来水混合的混合控制阀57安装在热水下游管59 合并部分。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2005180860A Hot water storage type water supply device 审中-公开
标题翻译：热水储存型供水设备
公开(公告)号：JP2005180860A
公开(公告)日：2005-07-07
申请号：JP2003424842
申请日：2003-12-22
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , OHATA TADASHI
IPC分类号： F24H1/00 , F24H1/18 , F24H9/20
摘要： PROBLEM TO BE SOLVED: To supply hot water to a bathtub at a stable temperature in a case of simultaneous supply of hot water to a faucet and to the bathtub by use of independent water mixing valves. SOLUTION: When the start of hot water supply to the bathtub and the stop of hot water supply to the bathtub are determined during hot water supply to the faucet (steps 140 and 156), the correction quantity of valve opening of the water mixing valve for hot water supply to the faucet is set based on a bath set temperature and a hot water supply set temperature (steps 147, 152, 164 and 168), and the valve opening of the water mixing valve for hot water supply is corrected to the direction of suppressing a change in hot water supply temperature according to the timing of starting or stopping the hot water supply (steps 150, 154, 166 and 170). According to this, hot water can be supplied to the faucet at a stable temperature. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在通过使用独立的水混合阀同时向水龙头和浴缸供应热水的情况下，在稳定的温度下向浴缸供应热水。
解决方案：当向水龙头供热的热水（步骤140和156）中确定开始向浴缸供热的热水和停止向浴缸供热的水源时，水的开阀校正量根据洗浴设定温度和热水供应设定温度（步骤147,152,164和168）设定用于热水供应到水龙头的混合阀，并且用于热水供应的水混合阀的阀开度被校正根据开始或停止热水供应的时间来限制热水供应温度的变化的方向（步骤150,154,166和170）。据此，可以在稳定的温度下将热水供给到水龙头。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2005172251A Heat pump type hot water supply apparatus 审中-公开
标题翻译：热泵型热水机
公开(公告)号：JP2005172251A
公开(公告)日：2005-06-30
申请号：JP2003408438
申请日：2003-12-08
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , OHATA TADASHI
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To preform smooth and efficient start of operation in a heat pump type hot water supply apparatus.
SOLUTION: In this hot water supply apparatus using a DC motor as a pump motor for driving a circulating pump, when the target output Wg of the circulating pump is set on the basis of the outside air temperature and the target boiling-up temperature, first the operation is started with the output w of the circulating pump set to 30% of the target output Wg, and when a temperature difference between the target temperature tg and the boiling-up temperature t reaches a temperature difference t
1 or a predetermined time elapses, the output of the circulating pump is raised to 60% of the target output (step 120 to 132). When a temperature difference between the target temperature tg and the boiling-up temperature t reaches a temperature difference t
2 or a predetermined time elapses, the output of the circulating pump is raised to 80% of the target output. Further, when a temperature difference between the target temperature tg and the boiling-up temperature t reaches a temperature difference t
3 , the circulating pump is caused to reach the target output, and the initial operation is ended to cause the transition to the ordinary operation (step 134 to 146).
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在热泵式热水供应装置中实现平稳有效的操作开始。解决方案：在使用直流电动机作为用于驱动循环泵的泵电动机的该热水供给装置中，当循环泵的目标输出Wg基于外部空气温度和目标煮沸设定温度，首先，将循环泵的输出w设定为目标输出Wg的30％，开始运转，当目标温度tg和沸腾温度t之间的温差达到温差t 1 或预定时间，循环泵的输出升高到目标输出的60％（步骤120至132）。当目标温度tg和沸腾温度t之间的温度差达到温度差T 2 或经过预定时间时，循环泵的输出升高到目标输出的80％。此外，当目标温度tg和沸腾温度t之间的温度差达到温度差t 3 时，循环泵达到目标输出，初始运转结束导致向普通操作的转变（步骤134至146）。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2005061662A Heat pump type water heater 有权
标题翻译：热泵型热水器
公开(公告)号：JP2005061662A
公开(公告)日：2005-03-10
申请号：JP2003289715
申请日：2003-08-08
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , KURAMOCHI KAZUYOSHI
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To shorten the re-heating operation time, and to relax limitation on use of hot water such as a lack of high-temperature water when necessary. SOLUTION: This heat pump type water heater is provided with a water storage tank, a heat pump refrigerant circuit, a hot-water storing circulation passage 22, a first flow passage switching means 29A provided in the upstream of a hot-water storing circulation pump 16, a re-heating circuit 26 for re-heating the water inside a bath tub, a second flow passage switching means 29B provided in the downstream of a heat exchanger 6 for exchanging heat between the refrigerant and water, a first re-heating circuit 27 connected to the second flow passage switching means and the first flow passage switching means in both ends thereof so that the high-temperature hot water, which is heated by the heat exchanger for exchanging heat between the refrigerant and water when operating re-heating, flows to a first heating part 17A of the re-heating heat exchanger and, thereafter, returns to the hot-water storing circulation passage in the upstream of the hot-water storing circulation pump through the first flow passage switching means, and a second re-heating circuit 28 wherein the high-temperature hot water inside the hot-water storage tank flows to a second heating part 17AA of the re-heating heat exchanger to exchange heat when operating re-heating and, thereafter, returns to an intermediate height position inside the hot-water storage tank. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了缩短再加热操作时间，并且在必要时放松使用诸如缺乏高温水的热水的限制。解决方案：该热泵式热水器设置有储水箱，热泵制冷剂回路，热水储存循环通道22，设置在热水上游的第一流路切换装置29A 存储循环泵16，用于再次加热浴槽内的水的再加热回路26，设置在热交换器6的下游，用于在制冷剂与水之间进行热交换的第二流路切换装置29B，加热电路27，其连接到第二流路切换装置和第一流路切换装置的两端，使得由热交换器加热的高温热水在运转时在制冷剂与水之间进行热交换加热，流入再热式热交换器的第一加热部分17A，然后通过f返回到热水储存循环泵的上游的热水存储循环通道第一流路切换装置和第二再热回路28，其中，所述热水储存箱内的高温热水流向所述再加热热交换器的第二加热部17AA，以在再加热时进行热交换然后返回到蓄热水箱内的中间高度位置。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2005042985A Heat pump water heater 审中-公开
标题翻译：热泵水加热器
公开(公告)号：JP2005042985A
公开(公告)日：2005-02-17
申请号：JP2003278103
申请日：2003-07-23
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , KURAMOCHI KAZUYOSHI
IPC分类号： F24H1/00 , F25B30/02
摘要： PROBLEM TO BE SOLVED: To provide a heat pump water heater with additional stoking function which directly flows hot-temperature water heated in a heat pump refrigerant circuit to the side of a heating part of an additional stoking heat exchanger, and has good heating capability and heating efficiency. SOLUTION: The heater comprises a water storage tank 15 which stores water, a heat pump refrigerant 14, a water storage circulating passage 22 which circulates water at the lower part in the water storage tank to a refrigerant-water heat exchanger 6 to heat the water, and returns the heated water to the upper part in the water storage tank, and an additional stoking circuit 26 which circulates bath water in a bath 4 to the side of a part to be heated 17B of an additional stoking heat exchanger 17 to heat the water, and returns the heated bath water into the bath 4. The heater further comprises an additional stoking branch circuit 28 which is branched in the midway of a water storage circulating passage on the downstream side of the refrigerant-water heat exchanger and directly flows hot-temperature water heated by the refrigerant-water heat exchanger to a heating part 17A of the additional stoking heat exchanger. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有附加起动功能的热泵热水器，其将在热泵制冷剂回路中加热的热水直接流入另外的加热换热器的加热部分的一侧，并且具有良好的加热能力和加热效率。解决方案：加热器包括储存水的储水箱15，热泵制冷剂14，将储水箱下部的水循环到制冷剂 - 水热交换器6的蓄水循环通道22，至加热水并将加热的水返回到储水箱的上部，以及另外的加料回路26，其将浴4中的浴水循环到另外的加热热交换器17的待加热部件17B侧加热水，并将加热的浴水返回到浴4中。加热器还包括另外的加料分支回路28，其在制冷剂 - 水热交换器的下游侧的蓄水循环通道的中途分支，将由制冷剂 - 水热交换器加热的热水直接流入附加的加热热交换器的加热部分17A。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005024242A Heat pump type hot-water supply device 有权
标题翻译：热泵型热水设备
公开(公告)号：JP2005024242A
公开(公告)日：2005-01-27
申请号：JP2004274288
申请日：2004-09-22
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： SAITO MASANOBU , ENYA YOSHINORI , KOYAMA KIYOSHI , TAKIZAWA SADAHIRO , SHIKICHI CHIAKI , ISHIGAKI SHIGEYA , IZAKI HIROKAZU , MUKOYAMA HIROSHI , KUWABARA OSAMU , YAMAZAKI HARUHISA , IMAI SATORU
IPC分类号： F24H1/00 , F24H1/18
摘要： PROBLEM TO BE SOLVED: To provide a heat pump type hot-water supply device capable of enhancing the safety by preventing a high-pressure refrigerant pipe from being exposed to the outside. SOLUTION: This heat pump type hot-water supply device is provided with a heat pump refrigerant circuit X using carbon dioxide as a refrigerant and a water circulation circuit N for hot water supply which circulates water at the bottom part in the hot water tank 26 to a refrigerant-to-water heat exchanger 27 and heats and returns the hot water heated by the refrigerant-to-water heat exchanger 27 to the top of the hot water tank 26 to store the hot water in the hot water tank 26. The component members of the heat pump refrigerant circuit X including the refrigerant-to-water heat exchanger 27 are arranged in a heat pump unit 10. Also, it is constituted so that the component parts of the water circulation circuit N for hot water supply excluding the refrigerant-to-water heat exchanger 27 are arranged in the hot water unit 12, and the heat pump unit and the hot water supply unit are formed by connecting them to each other through a pair of water pipes 36 and 36 forming a part of the water circulation circuit N for hot water supply. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够通过防止高压制冷剂管暴露于外部而提高安全性的热泵式热水供给装置。
解决方案：该热泵式热水供给装置具有使用二氧化碳作为制冷剂的热泵制冷剂回路X和用于热水供给的水循环回路N，其在热水中的底部循环水罐26到制冷剂 - 水热交换器27，并且将由制冷剂 - 水热交换器27加热的热水加热并返回到热水箱26的顶部，以将热水储存在热水箱26中包括制冷剂对水热交换器27的热泵制冷剂回路X的构成部件配置在热泵单元10中。另外，构成为使热水供给用的水循环回路N的部件不包括制冷剂 - 水热交换器27布置在热水单元12中，并且热泵单元和热水供应单元通过一对水管36和36彼此连接形成，形成一部分的水分 r循环回路N为热水供应。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2005055094A Heat pump hot water supply device 有权
标题翻译：热泵热水设备
公开(公告)号：JP2005055094A
公开(公告)日：2005-03-03
申请号：JP2003287241
申请日：2003-08-06
申请人： Sanyo Air Conditioners Kk , Sanyo Electric Co Ltd , 三洋エアコンディショナーズ株式会社 , 三洋電機株式会社
发明人： ENYA YOSHINORI , KURAMOCHI KAZUYOSHI
IPC分类号： F24H1/00 , F24H1/18
摘要： PROBLEM TO BE SOLVED: To provide a heat pump hot water supply device with a reheating function superior in heating capacity. SOLUTION: The heat pump hot water supply device is provided with a hot water storage tank 15, a heat pump refrigerant circuit 14, a circulation passage 22 for hot water storage, a reheating circuit 26, and a circuit 28 for reheating sending high temperature hot water of a hot water storage tank interior upper part to a heating part 17A side of a heat exchanger 17 for reheating. It is composed so that the passage change over means 29 is provided in a midway part of the circulation passage 22 for hot water storage between a supply opening part 23 of a hot water storage tank 15 lower part and a circulation pump 16 for hot water storage, a termination of the circuit 28 for reheating is connected to the passage change over means, the termination of the circuit for reheating is communicated with the circulation passage 22 for hot water storage more to an upstream side than the circulation pump for hot water storage, and reheating operation of the reheating circuit 26 is carried out in a closed state of the circulation passage 22 for hot water storage between the supply opening part 23 of the hot water storage tank 15 lower part and the circulation pump 16 for hot water storage. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有优良加热能力的再热功能的热泵热水供给装置。解决方案：热泵热水供应装置设置有热水储存箱15，热泵制冷剂回路14，热水储存用循环通道22，再加热回路26，再加热回路28 热水储存箱内部上部的高温热水到用于再加热的热交换器17的加热部17A侧。在热水储存槽15的供给开口部23和热水储存用循环泵16之间，在循环通路22的中途部设置热交换水通道22，再加热回路28的终端连接到通道换档装置上，用于再加热的回路的终端与用于热水储存的循环通道22相比，用于热水储存循环泵的上游侧，在热水储存槽15的供给口部23与热水储存用循环泵16之间的热水储存用循环通路22的关闭状态下进行再加热回路26的再加热运转。版权所有（C）2005，JPO＆NCIPI

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