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公开(公告)号：WO0060288A9
公开(公告)日：2001-11-01
申请号：PCT/JP0001885
申请日：2000-03-27
Applicant: MATSUSHITA REFRIGERATION , NAKATANI KAZUO , KUSAKA MICHIYOSHI , TAKATANI TAKAYUKI
Inventor： NAKATANI KAZUO , KUSAKA MICHIYOSHI , TAKATANI TAKAYUKI
CPC classification number: F25B9/006 , F25B2400/08 , F25B2400/16
Abstract: A heat pump using a zeotropic refrigerant includes a main circuit for a refrigeration cycle, which is connected with a closed circuit consisting of a rectification distillation apparatus, a cooling apparatus and a reservoir connected through switch valves. The switch valves are controlled according to the detected magnitude of the load, and the refrigerant composition for the main circuit is appropriately adjusted according to the state of the load, thus controlling the performance of the heat pump.
Abstract translation: 使用非共沸冷冻剂的热泵包括制冷循环的主回路，其与由精馏蒸馏装置，冷却装置和通过开关阀连接的储存器组成的闭路连接。 开关阀根据检测到的负载大小进行控制，主回路的制冷剂组成根据负载状态适当调整，从而控制热泵的性能。
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公开(公告)号：CA2217514A1
公开(公告)日：1998-04-28
申请号：CA2217514
申请日：1997-10-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKATANI KAZUO , KURACHI MASAO , KANEKO TAKASHI , KUSAKA MICHIYOSHI
Abstract: The present invention is directed to air conditioning equipment provided with an oil level equalizing system, which includes a plurality of low-pressure shell-type compressors communicating with a suction line through a plurality of branch portions, a plurality of connecting lines each communicating with a correspondin g compressor shell at a location adjacent to a normal oil level in the shell, and an oil level equalizing line communicating with the plurality of connecting lines. The oil level equalizing system also includes a communication line, through which the su ction line communicates with the oil level equalizing line at a location upstream of t he plurality of branch portions with respect to a direction of flow of a refrigeran t, for increasing the pressure within the oil level equalizing line to a value higher t han that within the shell of each compressor. A gas/liquid separator for separating a gas refrigerant and a liquid refrigerant or an oil/gas separator for separating oil from the gas refrigerant may be provided in the suction line upstream of the plurality of branch portions. Alternatively, an accumulator may be provided.
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公开(公告)号：JP2002340441A
公开(公告)日：2002-11-27
申请号：JP2001150519
申请日：2001-05-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： KUSAKA MICHIYOSHI , NAKATANI KAZUO
Abstract: PROBLEM TO BE SOLVED: To significantly reduce the quantity of a combustible refrigerant packed in a heat transfer tube. SOLUTION: The heat transfer tube 102 constituting a condenser 203 is composed of one seamless meandering tube into which a bar-like inserted member 103 having a fixed length is inserted and has supporting members 104 which support the inserted member 103 by coming into contact with the internal surface of the tube 102 so as to position the member 103 at almost the cross-sectional center of the tube 102. Therefore, the quantity of the refrigerant packed in the tube 102 can be reduced by the volume of the inserted member 103 and the leakage of the refrigerant from the tube 102 due to defective welding can be reduced and the heat transfer performance of the tube 102 can be improved.
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公开(公告)号：JP2001241782A
公开(公告)日：2001-09-07
申请号：JP2000055292
申请日：2000-03-01
Applicant: MATSUSHITA REFRIGERATION
Inventor： KUSAKA MICHIYOSHI , NAKATANI KAZUO , TAKATANI TAKAYUKI , OZAKI HITOSHI
IPC: F25B1/00
Abstract: PROBLEM TO BE SOLVED: To provide a heat pump system capable of improving system reliability by using a same storage unit even at a low boiling point storage time and a high boiling point storage time with a simple constitution, reducing in size a fractionating circuit and preventing stagnation of an excess refrigerant or a refrigerating machine oil. SOLUTION: A storage unit 39 is disposed at a lower position than a bottom of a fractionating tower 38. The bottom of the tower 38 is connected to an upper part of the unit 39 via an opening/closing valve 40. A top of the tower 38 and the upper part of the unit 39 are connected via a check valve 41 in which a refrigerant can flow from the unit 39 toward the top of the tower 38 and a non-azeotropic refrigerant is sealed.
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公开(公告)号：JP2000346477A
公开(公告)日：2000-12-15
申请号：JP16329599
申请日：1999-06-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKATANI KAZUO , KUSAKA MICHIYOSHI
IPC: F25B13/00
Abstract: PROBLEM TO BE SOLVED: To control capability responsive to a load by obtaining a sufficient composition separating width even under any operating condition of cooling and heating with a simple constitution and control, and enlarging the control width by regulating a refrigerant amount of a main circuit and the composition control. SOLUTION: A non-azeotrope refrigerant is sealed in the heat pump device. A check valve 16 and an opening/closing valve 17 are connected in series from midway of piping of an outdoor heat exchanger 13 and connected to a tower bottom of a rectifying separator 20. A sub-throttle unit 18 and a check valve 19 are connected in series from piping between a main throttle unit 14 and an indoor heat exchanger 15, and connected to the bottom of the separator 20. Further, a sub-circuit of the separator 20, a cooler 21 and a reservoir 22 is constituted. The pump device comprises a temperature sensor 25 for sensing an air temperature in a room, a memory 26 for storing a set air temperature value, and an arithmetic and control unit 21 for deciding a large or small difference between the air temperature and the set temperature to operate to open or close the valve 17.
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Patent Agency Ranking
公开(公告)号：JP2000346473A
公开(公告)日：2000-12-15
申请号：JP16329499
申请日：1999-06-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： KUSAKA MICHIYOSHI , NAKATANI KAZUO
IPC: F25B1/00
Abstract: PROBLEM TO BE SOLVED: To obtain a heat pump in which a sufficient compositional separation width can be ensured for both cooling and heating conditions through simple arrangement and control and the capacity can be controlled depending on the load by enlarging the capacity control width through regulation of the quantity of refrigerant in a main circuit and compositional control. SOLUTION: Delivery piping of a compressor 11 is coupled through a sub- throttle 20 and a first on/off valve 21 with the column bottom section of a rectifier/separator 17 having column top section coupled with a cooler and a storage unit annularly. The column bottom section of the rectifier/separator 17 is coupled through a sub-throttle 22 with the cooler 18 coupled with the suction piping of the compressor. Further, the piping coupling an outdoor main throttle 20 and an indoor main restrictor 22 is coupled through an on/off valve 23 with the bottom section of the storage unit 19 and non-azeotropic mixed refrigerant is encapsulated.
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公开(公告)号：JPH11201564A
公开(公告)日：1999-07-30
申请号：JP455098
申请日：1998-01-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKATANI KAZUO , KURACHI MASAO , KANEKO TAKASHI , KUSAKA MICHIYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a safe and highly efficient multiroom type air conditioner where trouble does not occur at control of capacity by enabling the capacity control of constant velocity compressor. SOLUTION: In the case where proper operation pressure at air conditioning operation is t and that the air conditioner is operated within the range of proper operation pressure, the operation capacity of constant velocity compressors 20, 21, 22, and 23 are kept as it is, and in the case where it is outside the range of a proper operation pressure value, the operation capacity is increased or decreased so that it may come to the proper operation pressure, and besides in the case where the operation capacity increased, indoor throttle devices 32a, 32b, 32c, and 32d, or an outdoor throttling device 29, or both throttle devices are operated in open direction, and also in the case where the operation capacity decreases, the indoor throttling devices 32a, 32b, 32c, and 32d, or the outdoor throttling device 29, or both throttling devices are operated in the close direction, whereby the excessive pressure drop to lower pressure or excessive pressure rise to higher pressure or the like can be avoided, and it becomes possible to perform safe and highly efficient continuous operation with proper pressure.
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公开(公告)号：JPH10205853A
公开(公告)日：1998-08-04
申请号：JP936597
申请日：1997-01-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKATANI KAZUO , KURACHI MASAO , MARUMOTO KAZUHIKO , KANEKO TAKASHI , KUSAKA MICHIYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a multi-chamber type air conditioner in which capacity can be controlled so as to meet load regardless of high or low load by a simple constitution and control and a highly efficient operation having no excessive deficiency in capacity can be done within a wide load range. SOLUTION: According to the provision of start and stop control means 37 of a plurality of compressors, when the total load of indoor machines 29a, 29b, 29c, and 29d is larger than the set value of a high load side, a constant rate compressor 20 with small capacity is started or stopped and a constant rate compressor 21 with large capacity is continuously operated. When the total load is located between the set value of the high load side and the set value of a low load side, the constant rate compressor 20 with small capacity and the constant rate compressor 21 with large capacity are alternately started and stopped. Further, a controller 37 for starting/stopping compressor is provided, and when the total load is smaller than the set value of the low load side, the constant rate compressor 20 with small capacity is stated or stopped and the constant rate compressor 21 with large capacity is stopped.
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公开(公告)号：JPH109723A
公开(公告)日：1998-01-16
申请号：JP16137496
申请日：1996-06-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： KANEKO TAKASHI , KURACHI MASAO , MARUMOTO KAZUHIKO , KUSAKA MICHIYOSHI
Abstract: PROBLEM TO BE SOLVED: To prevent oil separating capacity of centrifugation from being de creased by a method wherein an inner diameter of a centrifugal separating part is kept small even of an inner diameter of a main body of a container is increased in order to increase a capacity of an oil retaining part or increase a sectional surface area of separating material to improve oil separating perfor mance. SOLUTION: An upper part of a main body 10 of a container is separated into an inner chamber 12 and an outer chamber 13 by a cylindrical partition plate 11 having a predetermined length, suspended vertically in a downward direction from an inner upper end of the main body 10 of the container and having an opened bottom end part. A part lower than the partition plate 11 is defined as the oil retaining part, wherein there are provided a refrigerant inlet pipe 15 having an opening at the upper part in the inner chamber 12 in a tangential line direction of the partition plate 11, a refrigerant outlet pipe 16 having an opening at the upper part in the outer chamber 13 outside the main body 10 of the container and a separating material 18 in a horizontal direction at an entire surface of the outer chamber 13 in the vicinity of the lower part of the refrigerant outlet pipe 16.
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公开(公告)号：JP2001317829A
公开(公告)日：2001-11-16
申请号：JP2000138674
申请日：2000-05-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKATANI KAZUO , KUSAKA MICHIYOSHI , TAKATANI TAKAYUKI , OZAKI HITOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a heat pump apparatus capable of capability control in response to a load by increasing the amount of rising gas to a rectification separator even under operation conditions of any of cooling and heating with a simplified construction and control to improve rectification separation performance, and expanding the range of capability control by adjustment of the amount and composition control of a refrigerant in a main circuit. SOLUTION: Piping extending between a first sub-throttling device 21 and a bottom of a rectification separator 17 and piping extending between an outdoor main throttling device 14 and an indoor main throttling device 15 are indirectly heat exchanged, and a refrigerant flowing from the bottom of the rectification separator 17 through a second sub-throttling device 22 to suction piping of a compressor 11 and a refrigerant existent at the top of the rectification separator 17 are indirectly heat exchanged. As a cooling source on the side of the top of a tower latent heat of a liquid refrigerant effluent from the bottom of the tower is utilized.
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