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1. 发明专利

JPH1030840A AIR CONDITIONER 失效
公开(公告)号：JPH1030840A
公开(公告)日：1998-02-03
申请号：JP18734196
申请日：1996-07-17
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： UEKUSA TSUNEO , WARATANI SHISEI , CHIBA KAZUO , TAKEGAMI MASAAKI , ARAI TAKESHI , MIYAKE DAISUKE , UENO TAKEO
IPC分类号： F24F11/02 , F24F11/76 , F25B1/00 , F24F11/053
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner in which a room temperature control can be improved and the life of a compressor can be increased. SOLUTION: An air conditioner is provided with a refrigerant circuit in which a compressor 1, an outdoor heat exchanger 2, a motor-operated valve 3 and an indoor heat exchanger 4 are connected together in a ring shape. A room temperature discriminating part 10c discriminates whether room temperature detected by a room temperature sensor 6 is lower than set room temperature or not. When the room temperature discriminating part 10c discriminates that the room temperature is lower than the set room temperature during the operation of the compressor 1 at minimum operating frequency, an air quantity control part 10b of an air supply fan reduces the air volume of an air supply fan 5 for the indoor heat exchanger 4 in accordance with a command from an air volume decrease command part 10d. Accordingly, the number of times of starts and stops of the compressor 1 can be decreased.

2. 发明专利

JPH1030563A HEATER CONTROLLER FOR COMPRESSOR 失效
公开(公告)号：JPH1030563A
公开(公告)日：1998-02-03
申请号：JP18734696
申请日：1996-07-17
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： UEKUSA TSUNEO , WARATANI SHISEI , CHIBA KAZUO , TAKEGAMI MASAAKI , ARAI TAKESHI , HARA MASAKANE , KACHI TORU
IPC分类号： F04B39/06 , F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To provide a heater controller for compressor which can prevent refrigerant from being mixed with lubricating oil in a compressor and refrigerant from being gathered in a compression chamber, reduce consuming power more than conventional systems, and can increase the service life of a heater itself and electric parts. SOLUTION: This controller is provided with an outside air temperature sensor 32 for detecting atmospheric temperature on the side where a compressor 4 is installed out of exterior devices or interior devices. A control part 11 compares the temperature T1 detected by the outside air temperature sensor 32 with a fixed reference value (for example, 25 deg.C), and permits a heater 23 to be energized when the temperature T1 detected by the outside air temperature sensor 32 is less than the reference value, and prohibits the heater 23 from being energized when the temperature T1 detected by the outside air temperature sensor 32 is the reference value or higher.

3. 发明专利

JPH1030835A CONTROLLER FOR AIR CONDITIONER 失效
公开(公告)号：JPH1030835A
公开(公告)日：1998-02-03
申请号：JP18733396
申请日：1996-07-17
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： UEKUSA TSUNEO , WARATANI SHISEI , CHIBA KAZUO , UENO TAKEO , TAKEGAMI MASAAKI , WATANABE SHINICHI , KITANO MOICHI
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To decrease the number of times of protective stops and improve the reliability of a compressor. SOLUTION: A table showing the protective control decision values and protective stop decision values of monitored temperature and monitored pressure is stored in a storing part 16. A protective control part 13 starts a protective control operation according to the protective control decision values of the table. A protective stop part 14 carries out a protective stop according to the protective stop decision values of the table. Upon protective stop, a protective control correction part 17 corrects the protective control decision values of the table according to the number of times of restarts and carries out a protective control quickly during the restart so as not to reach the protective stop. A restarting setting part 18 resets the opening degree of an expansion valve 3 and the fan tap of an outdoor fan 19 according to the contents of the protective stop to make the state of a refrigerant optimum during the restart and lower the burden of a compressor 1. Thus, the reliability of the compressor 1 is improved.

4. 发明专利

JPH1038388A AIR CONDITIONER AND ITS CONTROL METHOD 失效
公开(公告)号：JPH1038388A
公开(公告)日：1998-02-13
申请号：JP19635096
申请日：1996-07-25
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： WARATANI SHISEI , UEKUSA TSUNEO , CHIBA KAZUO , UENO TAKEO , TAKEGAMI MASAAKI , MIYAKE DAISUKE , ARAI TAKESHI
IPC分类号： F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To prevent the overheat compression of a compressor, to the change of the operation state by disturbance, sudden change of load, etc. SOLUTION: This air conditioner is composed of a freezing cycle where a compressor 1, an outdoor heat exchanger, an expansion valve 4, and an indoor heat exchanger are connected by a pipe, a discharge temperature sensor 1 which detects the discharge temperature of the compressor 1, an estimation means 20 which accumulates the discharge temperatures of the compressor 1 detected by the discharge temperature sensor 1 in every specified time and estimates the discharge temperature of the compressor after a specified time, a comparison means 20 which compares the discharge temperature of the compressor after the specified time estimated with this estimation means with the upper limit of the temperature of a discharge pipe, and a means 20 which increases the quantity of operation in the direction of opening the expansion valve in case that the discharge temperature of the compressor after a specified time estimated with the estimating means is over the upper limit value of the temperature of the discharge pipe as the result of comparison by this comparison means.

5. 发明专利

JPH1030853A CONTROLLER FOR AIR CONDITIONER 失效
公开(公告)号：JPH1030853A
公开(公告)日：1998-02-03
申请号：JP18734596
申请日：1996-07-17
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： UEKUSA TSUNEO , WARATANI SHISEI , CHIBA KAZUO , UENO TAKEO , TAKEGAMI MASAAKI , KITANO MOICHI , ARAI TAKESHI
IPC分类号： F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To control air volume of an outdoor fan so as to become maximum COP responsive to an outdoor temperature. SOLUTION: A storage unit 9 stores a cooling capacity table 10 representing an air volume exhibiting maximum capacity for an outdoor temperature and a COP table 11 representing an air volume exhibiting maximum COP for the outdoor temperature. An air volume switching control unit 8 obtains an air volume of an outdoor fan 5 becoming the maximum COP at the outdoor temperature by using the table 11, and outputs a control signal responsive to the volume to a fan control unit 12. Thus, the volume of the fan 5 is normally COP- controlled to obtain energy conservation. On the other hand, if a cooling capacity is insufficient, the volume of the fan 5 becoming maximum cooling capacity at the outdoor temperature is obtained by using the table 10, and a control signal responsive to the volume is output to the unit 12. In this manner, cooling capacity insufficiency is exactly dealt with.

6. 发明专利

JPH1038350A AIR CONDITIONER AND CONTROLLING METHOD THEREOF 失效
公开(公告)号：JPH1038350A
公开(公告)日：1998-02-13
申请号：JP19634896
申请日：1996-07-25
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： UEKUSA TSUNEO , WARATANI SHISEI , CHIBA KAZUO , UENO TAKEO , TAKEGAMI MASAAKI , KITANO MOICHI , WATANABE SHINICHI
IPC分类号： F24F11/02 , F24F11/76 , F24F11/053
摘要： PROBLEM TO BE SOLVED: To enable stable execution of a control and a refrigerating cycle operation by determining the amount of change of a control means in the lower priority order by an operation of a control means in the higher priority order out of first, second and third control means and by modifying the amount of operation of the control means in the lower priority order in accordance with the amount of change. SOLUTION: A control device 20 determines the amount of change of a control means in the lower priority order by an operation of a control means in the higher priority order out of a first control means which regulates the capacity of a compressor 1 in accordance with a difference between an indoor temperature detected by an indoor temperature sensor 15 and a set value of the indoor temperature and controls the indoor temperature, a second control means which regulates the quantity of airflow of an indoor-side blower 13 in accordance with a difference between an outlet air temperature detected by an outlet temperature sensor 16 and a set value of the outlet air temperature and controls the outlet air temperature and a third control means which determines the opening of an expansion valve 5. In accordance with the amount of change thus determined, the amount of operation of the control means in the lower priority order is modified. Accordingly, a control and a refrigerating cycle operation being free from a phenomenon of hunting can be executed stably.

7. 发明专利

JPH1038349A AIR CONDITIONER AND CONTROLLING METHOD THEREOF 失效
公开(公告)号：JPH1038349A
公开(公告)日：1998-02-13
申请号：JP19634796
申请日：1996-07-25
申请人： NTT FACILITIES KK , NIPPON TELEGRAPH & TELEPHONE , DAIKIN IND LTD
发明人： WARATANI SHISEI , UEKUSA TSUNEO , CHIBA KAZUO , UENO TAKEO , TAKEGAMI MASAAKI , WATANABE SHINICHI , HARA MASAKANE
IPC分类号： F24F11/02 , F24F11/76 , F24F11/053
摘要： PROBLEM TO BE SOLVED: To prevent excess and deficiency of an air conditioning capacity and thereby to enable execution of an economical operation by controlling the capacity of a compressor and the quantity of airflow of an indoor-side blower in accordance with a detected temperature of a second temperature detecting means at the time when abnormality occurs in a first temperature detecting means. SOLUTION: In the case when a signal output of an inlet air temperature sensor 13 being a first temperature detecting means does not come in a control device 30 by any cause, the control device 30 determines that the inlet air temperature sensor 13 is abnormal. On the occasion when the sensor is determined as abnormal in this way, the capacity of a compressor 1 and the quantity of airflow of an indoor-side blower 12 are controlled on the basis of an output of a detected value of an outlet air temperature sensor 14 being a second temperature detecting means, set values, a blower standard operating frequency and an operating frequency of the indoor-side blower 12. Thereby excess and deficiency of an air conditioning capacity is prevented and an economical operation can be executed.

8. 发明专利

JP2010164295A Refrigerating device 有权
标题翻译：制冷装置
公开(公告)号：JP2010164295A
公开(公告)日：2010-07-29
申请号：JP2009289646
申请日：2009-12-21
申请人： Daikin Ind Ltd , ダイキン工業株式会社
发明人： ARII KEIJI , SHINOHARA IWAO , TAKEGAMI MASAAKI , KAJIMOTO AKIHIRO
IPC分类号： F25B1/00 , F25B47/02
CPC分类号： F25B41/062 , F25B13/00 , F25B47/006 , F25B47/02 , F25B2313/02741 , F25B2500/31 , F25B2600/2513
摘要： PROBLEM TO BE SOLVED: To prevent an intake pipe from being frozen while suppressing rise in interior temperature.
SOLUTION: An expansion valve control part (34) switches a normal control mode for adjusting an opening degree of an electronic expansion valve (17) to make outlet coolant of an inner heat exchanger (18) at a predetermined degree of superheating and a freezing-avoidance control mode for adjusting an opening degree of the electronic expansion valve (17) to make temperature of the intake pipe (11b) of a compressor (11) at a predetermined value or higher. Then, a thermostat ON signal is output for the first time after outputting a thermostat OFF signal, and if exterior air temperature is lower than a predetermined value, the opening degree of the electronic expansion valve (17) is adjusted in accordance with the freezing-avoidance control mode.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止进气管在抑制内部温度升高的同时冻结。解决方案：膨胀阀控制部分（34）切换用于调节电子膨胀阀（17）的开度的正常控制模式，以使内部热交换器（18）的出口冷却剂处于预定的过热度，用于调节电子膨胀阀（17）的开度以使压缩机（11）的进气管（11b）的温度达到预定值或更高的冷冻避免控制模式。然后，在输出恒温器OFF信号之后，首次输出恒温开关信号，如果外部空气温度低于预定值，则电子膨胀阀（17）的开度根据冷冻 - 回避控制模式。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2010156502A Refrigerating device 审中-公开
标题翻译：制冷装置
公开(公告)号：JP2010156502A
公开(公告)日：2010-07-15
申请号：JP2008334957
申请日：2008-12-26
申请人： Daikin Ind Ltd , ダイキン工業株式会社
发明人： SAKAE SATORU , TAKEGAMI MASAAKI
IPC分类号： F25B1/00
摘要： PROBLEM TO BE SOLVED: To vary a supercooling degree of a high-pressure refrigerant with respect to each of first and second use side heat exchangers connected to a refrigerant circuit, in a refrigerating device including the refrigerant circuit for performing a vapor compression type refrigerating cycle and a supercooling circuit for supercooling a refrigerant made to flow in the refrigerant circuit.
SOLUTION: The supercooling circuit (10a) includes: a first supercooling heat exchanger (14) having a first high temperature side flow passage (14a) connected to a first branch pipe (90b) and a first low temperature side flow passage (14b) connected to low pressure lines (7, 4) of the supercooling circuit (10a); and a second supercooling heat exchanger (15) having a second high temperature side flow passage (15a) connected to a second branch pipe (90c) and a second low temperature side flow passage (15b) connected to the first branch pipe (90b) so that the second low temperature side flow passage is positioned on the first use side heat exchanger (62, 72) side from the first high temperature side flow passage (14a) of the first supercooling heat exchanger (14).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了改变连接到制冷剂回路的第一和第二使用侧热交换器中的高压制冷剂的过冷却度，包括用于执行蒸气压缩的制冷剂回路的制冷装置制冷循环的过冷却回路，以及使在制冷剂回路中流动的制冷剂过冷却的过冷却回路。过冷却回路（10a）包括：第一过冷却热交换器（14），其具有连接到第一分支管（90b）的第一高温侧流动通道（14a）和第一低温侧流动通道 14b）连接到过冷却回路（10a）的低压管线（7,4）; 和具有与第二支管（90c）连接的第二高温侧流路（15a）和与第一分支管（90b）连接的第二低温侧流路15b的第二过冷却热交换器15，第二低温侧流路与第一过冷却热交换器14的第一高温侧流路14a位于第一利用侧热交换器62,72侧。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2010121833A Refrigeration device 审中-公开
标题翻译：制冷装置
公开(公告)号：JP2010121833A
公开(公告)日：2010-06-03
申请号：JP2008294908
申请日：2008-11-18
申请人： Daikin Ind Ltd , ダイキン工業株式会社
发明人： TAKEGAMI MASAAKI
IPC分类号： F25B29/00
摘要： PROBLEM TO BE SOLVED: To easily and surely prevent generation of flush of liquid refrigerant in a heating/cooling operation in which an air conditioning unit is kept in a heating state while cooling the inside of a storage by a cooling unit, in a refrigeration device in which a heat source-side unit, and the air conditioning unit and the cooling unit disposed at a lower part of the heat source-side unit are connected by four refrigerant pipes.
SOLUTION: An indoor unit (50), a refrigerating unit (60) and a freezing unit (70) are connected with each other so that the refrigerant flowing out from the indoor unit (50) directly flows into the refrigerating unit (60) and the freezing unit (70), in the heating/cooling operation in which an indoor heat exchanger (51) is applied as a condenser while cooling the inside of the storage by a refrigerating heat exchanger (61) and a freezing heat exchanger (71).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了容易且可靠地防止在通过冷却单元冷却存储器的内部的同时将空调单元保持在加热状态的加热/制冷操作中产生液体制冷剂的冲洗，其中热源侧单元和设置在热源侧单元的下部的空调单元和冷却单元通过四个制冷剂管连接的制冷装置。解决方案：室内单元（50），制冷单元（60）和冷冻单元（70）彼此连接，使得从室内单元（50）流出的制冷剂直接流入制冷单元（ 60）和冷冻装置（70），在通过冷藏热交换器（61）和冷冻热交换器（61）对冷藏库内的室内热交换器（51）作为冷凝器进行加热/制冷运转时，（71）。版权所有（C）2010，JPO＆INPIT

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