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1. 发明授权

US11162725B2 Heat pump with hot water storage and refrigerant leak detection 有权
公开(公告)号：US11162725B2
公开(公告)日：2021-11-02
申请号：US16499528
申请日：2017-06-26
申请人： Mitsubishi Electric Corporation
发明人： Yasuhiro Suzuki , Hirokazu Minamisako , Kazutaka Suzuki , Takafumi Mito , Taro Hattori
IPC分类号： F25B49/02 , F24F11/36 , F24F3/06
摘要： A heat pump apparatus includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit performs a first operation using a load-side heat exchanger as a condenser, and a second operation using the load-side heat exchanger as an evaporator. A suction pipe provided between a refrigerant flow switching valve and a compressor has a container. To the heat medium circuit, an overpressure protection relief valve and a refrigerant leakage detector are connected. When leakage of refrigerant into the heat medium circuit is detected, the refrigerant flow switching valve is switched to a second state, an expansion device is set to a closed state, and the compressor is operated. When a requirement for ending the operation of the compressor is satisfied after the leakage is detected, the compressor is stopped, and the refrigerant flow switching valve is switched to a first state.

2. 发明授权

US09920936B2 Air conditioning apparatus 有权
公开(公告)号：US09920936B2
公开(公告)日：2018-03-20
申请号：US14051598
申请日：2013-10-11
申请人： Mitsubishi Electric Corporation
发明人： Yoshiro Aoyagi , Taro Hattori , Koji Matsuzawa
IPC分类号： F24D19/00 , F24D3/18 , F24D19/10 , F24F3/06 , F24F5/00 , F24D17/02
CPC分类号： F24D3/18 , F24D17/02 , F24D19/1039 , F24D19/1072 , F24D2200/12 , F24D2220/042 , F24F3/06 , F24F5/0003 , F24F5/0096
摘要： An object is to enable the dealer or user of an air conditioning apparatus to recognize that the heat dissipation amount of a heat exchange device is less than the heat dissipation amount expected of the air conditioning apparatus. A control device detects a hot water outflow temperature being a temperature of a fluid heated by a heat pump device, and a return temperature being a temperature of the fluid before being heated by the heat pump device, and checks whether or not a temperature difference between the detected hot water outflow temperature and the detected return temperature is smaller than a predetermined first value. If the control device judges that the temperature difference is smaller than the first value, it displays insufficiency of the heat dissipation amount of a heat exchange device, on a display of a remote controller.

3. 发明授权

US11248829B2 Apparatus using a heat pump including a refrigerant leakage detector 有权
公开(公告)号：US11248829B2
公开(公告)日：2022-02-15
申请号：US16490744
申请日：2017-06-09
申请人： Mitsubishi Electric Corporation
发明人： Yasuhiro Suzuki , Hirokazu Minamisako , Kazutaka Suzuki , Takafumi Mito , Taro Hattori
IPC分类号： F25B49/02 , F25B30/02 , F24D11/02 , F24F11/36
摘要： An apparatus using a heat pump includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit is capable of performing a first operation, in which a load-side heat exchanger is used as a condenser, and a second operation, in which the load-side heat exchanger is used as an evaporator. A main circuit of the heat medium circuit has a branching part and a joining part. An overpressure protection device and a refrigerant leakage detecting device are connected to the main circuit. The overpressure protection device is connected to a connection part located between the load-side heat exchanger and one of the branching part and the joining part, or at the load-side heat exchanger. When leakage of refrigerant is detected, the state of a refrigerant flow switching device is set to a second state, an expansion device is set to a closed state, and a compressor is operated.

4. 发明授权

US10429086B2 Heat-pump equipment 有权
公开(公告)号：US10429086B2
公开(公告)日：2019-10-01
申请号：US15552621
申请日：2015-05-12
申请人： Mitsubishi Electric Corporation
发明人： Jun Yoshida , Taro Hattori , Kazutaka Suzuki , Koji Matsuzawa , Hirokazu Minamisako , Kei Takeyama , Masahiro Hata
IPC分类号： F24D19/10 , F24D3/08 , F24D17/02
摘要： When hot water supply and room heating are requested simultaneously, a hot water supply operation, by which energy saving is achieved without impairing the comfortability in a room, is performed. A heat-pump apparatus of a variable operation capacity type, a primary water circuit, a hot water tank, a room heater, and a controller are provided. The controller sets a hot water supply operation completion target time in the case of a requests for a simultaneous hot water supply and room heating operation, based on a temperature difference between the outdoor air temperature and the indoor temperature, and determines the rotation speed of the compressor in the hot water supply operation completion target time set.

5. 发明授权

US11326788B2 Air-conditioning apparatus 有权
公开(公告)号：US11326788B2
公开(公告)日：2022-05-10
申请号：US16965384
申请日：2018-02-28
申请人： Mitsubishi Electric Corporation
发明人： Kazunari Sawada , Taro Hattori , Kazutaka Suzuki , Hirokazu Minamisako
IPC分类号： F24F1/32 , F24F1/0063 , F24F1/16 , F24F1/62
摘要： An air-conditioning apparatus includes an outdoor unit, a heat medium relay unit, and an indoor unit. The outdoor unit is installed in an outdoor space, which is a space outside a building including an air-conditioned space. The heat medium relay unit is installed in the outdoor space, and includes a housing that accommodates an intermediate heat exchanger. The indoor unit includes a load heat exchanger configured to exchange heat between air and a heat medium. The housing is installed to the outer wall of the building.

6. 发明授权

US11293672B2 Heat-pump using apparatus 有权
公开(公告)号：US11293672B2
公开(公告)日：2022-04-05
申请号：US16494883
申请日：2017-06-19
申请人： Mitsubishi Electric Corporation
发明人： Yasuhiro Suzuki , Hirokazu Minamisako , Kazutaka Suzuki , Takafumi Mito , Taro Hattori
IPC分类号： F25B13/00 , F25B49/02 , F24F11/36 , F25B1/00
摘要： A heat-pump using apparatus includes a refrigerant circuit and a heat medium circuit. The refrigerant circuit is capable of executing a heating operation and a cooling operation. A first expansion device is provided downstream of a reservoir, and a second expansion device is provided upstream of the reservoir, in the flow of refrigerant in the heating operation. A main circuit of the heat medium circuit includes a branching part and a joining part. An overpressure protection device is connected to a connection part which is located between a load-side heat exchanger and one of the branching part and the joining part or at the load-side heat exchanger. A refrigerant leakage detecting device is connected to the other of the branching part and the joining part, or between the other of the branching part and the joining part and the connection part, or to the connection part.

7. 发明授权

US11029042B2 Indoor unit for heat pump use apparatus and heat pump use apparatus including the same 有权
公开(公告)号：US11029042B2
公开(公告)日：2021-06-08
申请号：US16319854
申请日：2016-10-17
申请人： Mitsubishi Electric Corporation
发明人： Yasuhiro Suzuki , Taro Hattori , Hirokazu Minamisako , Kazutaka Suzuki
IPC分类号： F24D19/10 , F24D11/02 , F24D17/02 , F25B30/02 , F25B47/02
摘要： Provided is an indoor unit for a heat pump use apparatus, the indoor unit being a part of the heat pump use apparatus including a refrigerant circuit configured to circulate refrigerant, a heat medium circuit configured to allow a heat medium to flow through the heat medium circuit, and a heat exchanger configured to exchange heat between the refrigerant and the heat medium. The indoor unit is connectable to an outdoor unit accommodating the refrigerant circuit and the heat exchanger. The indoor unit accommodates a part of the heat medium circuit. The indoor unit includes a pressure protection device connected to the heat medium circuit, and an on-off device provided to be interposed between the heat medium circuit and the pressure protection device.

8. 发明授权

US08893916B2 Hot water storage tank unit 有权
标题翻译：热水储罐装置
公开(公告)号：US08893916B2
公开(公告)日：2014-11-25
申请号：US14045934
申请日：2013-10-04
申请人： Mitsubishi Electric Corporation
发明人： Kei Takeyama , Taro Hattori , Kazutaka Suzuki
IPC分类号： B65D88/74 , F24H9/06 , F24D11/02 , F24D19/00 , F24H9/14
CPC分类号： F24D19/0097 , F24D11/0214 , F24H9/06 , F24H9/148 , Y02B30/125
摘要： [Solution] A metal cylindrical tank leg 20 forming an opening in a portion opposite to the lower end plate 7b is provided on the lower end plate 7b of the hot water storage tank 7, a plurality of metal L-shaped tank legs 21 one edge 21a of each of which extends outwardly are provided on the outer peripheral surface of the cylindrical tank leg 20 and arrayed in a circumferential direction thereof, a base plate made of a metal is fixed to the second tank legs; and the cylindrical tank leg 20 and the L-shaped tank legs 21 are fixed to a base plate 12b with a base heat insulator 23 having an electrical insulation property and elasticity interposed therebetween. Part of the lower end plate 7b located within the opening of the cylindrical tank leg 20 is covered by an end plate heat insulator 22.
摘要翻译： [解决方案]在热水储存箱7的下端板7b上设置形成与下端板7b相对的部分的开口的金属圆柱形罐支腿20，多个金属L形罐支脚21，一个边缘其每一个都向外延伸设置在圆柱形罐腿20的外圆周表面上，并沿圆周方向排列，由金属构成的底板固定在第二罐腿上; 并且圆柱形罐支腿20和L形罐支脚21固定到基板12b上，其中隔热材料具有电绝缘性能和弹性。位于圆筒形罐腿20的开口内的下端板7b的一部分被端板式隔热件22覆盖。

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