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51. 发明专利

JP2002228273A AIR CONDITIONER 失效
公开(公告)号：JP2002228273A
公开(公告)日：2002-08-14
申请号：JP2001028870
申请日：2001-02-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA MASAHIRO , YAMADA KENICHI
IPC分类号： F25B1/00
摘要： PROBLEM TO BE SOLVED: To vary the number of the refrigerant flow passages of a heat exchanger by using a low cost and compact means as energy efficiency is improved. SOLUTION: A refrigerant flow passage switching valve 10 is established as an annex at least at one of an indoor heat exchanger 5 and an outdoor heat exchanger 3, which are provided with a plurality of refrigerant flow passages 51-54. A refrigerant flow passage switching valve 10 is provided with first and second ports 81 and 84 communicated with a refrigerant flow passage on the most upper stream side and a refrigerant flow passage on the most downstream side in the refrigerant flow passages 51-54 and a valve body 21 to switch the connection formats of the refrigerant flow passages 51-54 moved by a pressure difference between the ports during cooling operation and heating operation.

52. 发明专利

JP2002181477A HEAT TRANSFER TUBE HAVING GROOVED INNER SURFACE 失效
公开(公告)号：JP2002181477A
公开(公告)日：2002-06-26
申请号：JP2000376866
申请日：2000-12-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： MURAKAMI TAIJO , WAKAMOTO SHINICHI , ISHIBASHI AKIRA , NAKAYAMA MASAHIRO
IPC分类号： F28F1/40 , F25B39/00
摘要： PROBLEM TO BE SOLVED: To provide a heat transfer tube having grooved inner surface which tube is low in pressure loss and yet improved in the rate of heat transfer with condensation. SOLUTION: A heater transfer tube 1 having inner surface grooves comprises a plurality of tilt grooves 4a and 4b arranged in a spiral on the inner surface thereof and extending at a predetermined tilt angle with respect to the axis 2 thereof. If further comprises a damming member 5 crossing the tilt grooves at a predetermined tilt angle different from those of the tilt grooves with respect to the axis of the tube, and projecting circumferentially in a narrow and long strip on the inner surface of the heat transfer tube 1 for damming up a refrigerant flowing therein; and drainage grooves 6a and 6b, which abut on the damming member and communicate with the tilt grooves.

53. 发明专利

JP2001241780A REFRIGERATING AIR CONDITIONER 失效
公开(公告)号：JP2001241780A
公开(公告)日：2001-09-07
申请号：JP2000056335
申请日：2000-03-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA MASAHIRO , YOSHIKAWA TOSHIAKI , MAKINO HIROAKI
IPC分类号： F25B1/00 , F25B1/10 , F25B13/00
摘要： PROBLEM TO BE SOLVED: To improve safety of a refrigerating air conditioner for filling a refrigerant such as an R32, an R290 or the like, that is, a refrigerant having small possibility of an ozonosphere fracture having combustibility and a small GWP by improving an efficiency of a refrigerating cycle and reducing in size the air conditioner. SOLUTION: The refrigerant is injected from a high pressure or intermediate pressure part of a refrigerant circuit such as a gas-liquid separator, a liquid tube or the like to the intermediate pressure part of a compressor side such as piping or the like for connecting a compressing chamber of an intermediate pressure state or a low stage side compressor to a high stage side compressor. Thus, a COP and a refrigerating capability are improved.

54. 发明专利

JP2001091105A REFRIGERANT DISTRIBUTOR AND METHOD FOR PRODUCTION THEREOF 失效
公开(公告)号：JP2001091105A
公开(公告)日：2001-04-06
申请号：JP26805399
申请日：1999-09-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKADEGUCHI SHINJI , HISAMORI YOICHI , MURAYAMA HIDEYUKI , NAKAYAMA MASAHIRO , TANIGAWA TSUKASA , HATAMURA YASUFUMI , MORIMOTO OSAMU
IPC分类号： F16L13/02 , F16L41/03 , F25B41/00
摘要： PROBLEM TO BE SOLVED: To obtain a distributor improving a property of mixing and distributing gas-liquid two-phase refrigerant, assembling reliability in mass production and having fewer number of parts and fewer manhotus for assembling, a low price, and high reliability. SOLUTION: The refrigerant distributor is provided with a piping connecting part 20, a cover part 21 covering a half surface of the piping connecting part 20 and forming a mixing chamber 23 between the cover part and the piping connecting part 20, a refrigerant supplying pipe 24 inserted into a bore provided on the piping connecting part 20 and making a gas-liquid two-phase refrigerant flow into the mixing chamber 23, and a plurality of refrigerant distributing pipes 25 inserted into bores provided on the piping connecting part 20 and making the refrigerant mixed in the mixing chamber 23 be distributed and flow out, wherein the refrigerant entering from the refrigerant supplying pipe 24 is made to impinge on a wall surface of the mixing chamber 23 and then flow out into the refrigerant distributing pipes 25.

55. 发明专利

JP2001082815A REFRIGERATION AIRCONDITIONING CYCLE DEVICE 失效
公开(公告)号：JP2001082815A
公开(公告)日：2001-03-30
申请号：JP26014399
申请日：1999-09-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA MASAHIRO , TOYOSHIMA MASAKI , MAKINO HIROAKI
IPC分类号： F25B1/00 , F25B43/02
摘要： PROBLEM TO BE SOLVED: To improve energy efficiencies (COP) in a refrigeration airconditioning cycle device using a substitution refrigerant such as HFC based refrigerant. SOLUTION: In the refrigeration air conditioning cycle device provided with a refrigeration circuit wherein a compressor 1, condenser 2, pressure reducing device 3, and evaporator 4 are successively connected by refrigerant piping, an HFC based refrigerant and an alkylbenzene based refrigerator oil, which is hardly dissolved in the HFC based refrigerant oil, are sealed in the refrigeration circuit. There is provided an oil circulating ratio control means including an oil separator 5 to separate refrigerant and refrigerator oil, an oil return circuit 27 to return refrigerator oil separated by the separator 5 to the suction side of the compressor 1, and a second flow rate control valve 6 to adjust the amount of returned oil of refrigerator oil. By adjusting the opening of the valve 6, the ratio (%) of mass flow rate of refrigerator oil to total mass flow rate (= flow rate of refrigerant + flow rate of refrigerator oil) is always controlled to 1% or less.

56. 发明专利

JP2001065953A AIR CONDITIONER AND CONTROL METHOD OF THE SAME 失效
公开(公告)号：JP2001065953A
公开(公告)日：2001-03-16
申请号：JP24439999
申请日：1999-08-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONISHI SHIGEKI , NAKAYAMA MASAHIRO , YOSHIKAWA TOSHIAKI , HIRAKUNI SATORU , SUMIDA YOSHIHIRO
IPC分类号： F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To permit the realization of the high controllability of a temperature and a humidity in a room to be air conditioned efficiently with an inexpensive constitution by controlling the frequency of a compressor and the opening degree of a first choking mechanism. SOLUTION: The equal control range can be maintained by not necessarily regulating the opening degree of a second choking mechanism 6 but only controlling the opening degree regulation of a first choking mechanism 4 and the frequency of a compressor 1 under a condition that the opening degree of the second choking mechanism 6 is fixed, for example. In this case, a latent heat output can be controlled by the increasing or decreasing of the frequency of the compressor 1 and the sensitive heat output can be controlled by the opening or closing of the first choking mechanism 4 as shown by two pieces of arrow signs in a diagram. Accordingly, the sensitive heat output and most part of the latent heat output can be controlled independently by only two control objects or the opening degree of the first choking mechanism 4 and the frequency of the compressor 1 while fixing the opening degree of the second choking mechanism 6 as it is whereby the contents of control can be constituted more simply compared with the complicated conventional temperature and humidity controls, effected by the compressor, the first and second choking mechanisms and the indoor fan.

57. 发明专利

JP2001027460A REFRIGERATION CYCLE SYSTEM 失效
公开(公告)号：JP2001027460A
公开(公告)日：2001-01-30
申请号：JP2000193121
申请日：2000-06-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA MASAHIRO , IIJIMA HITOSHI , YOSHIDA TAKAYUKI , NAGANO MASAO , EDAYOSHI ATSUSHI , KONISHI MASARU , KODA TOSHIHIDE , SUMIDA YOSHIHIRO , OKAZAKI TAKASHI , KITORA YOSHIHISA , MORIMOTO OSAMU , KASAI TOMOHIKO
IPC分类号： F25B1/00 , F25B41/06 , F25B43/00 , F25B43/02
摘要： PROBLEM TO BE SOLVED: To protect a compressor against damage by making the compressor to suck refrigerant gas and lubricant separated in an accumulator efficiently and preventing insufficient lubrication thereby ensuring reliability of the compressor. SOLUTION: Wet refrigerant from an evaporator fed through a suction pipe 56 is subjected to gas/liquid separation and lubricant forms an upper layer while liquid refrigerant forms a lower layer at the bottom of an accumulator 55 because of the difference of specific gravity. The liquid refrigerant is heated above saturation temperature by means of a heater 60 provided on the bottom of the accumulator 55 and evaporated. It is then sucked through a delivery pipe 57 into a compressor and only lubricant stands on the bottom of the accumulator 55. Subsequently, a valve 61 in a delivery pipe 59 laid on the bottom of the accumulator 55 is opened and the lubricant is sucked therefrom into the compressor. The series of operations is controlled by detection signals from a liquid level detector 63, a refrigerant saturation temperature detector 64 and a refrigerant temperature detector 65 mounted on the accumulator 55.

58. 发明专利

JPH08285392A FREEZER DEVICE 失效
公开(公告)号：JPH08285392A
公开(公告)日：1996-11-01
申请号：JP8967895
申请日：1995-04-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： UNEZAKI FUMITAKE , MATSUOKA FUMIO , IIJIMA HITOSHI , TANIMURA YOSHIAKI , INOUE SEIJI , NANATANE TETSUJI , NAKAYAMA MASAHIRO
IPC分类号： F25B1/00
摘要： PURPOSE: To provide a freezer having a high operating efficiency in which occurrence of environmental problem of damaging ozone layer under utilization of mixed refrigerant is avoided. CONSTITUTION: Mixed refrigerant is processed to separate a high-boiling point refrigerant containing a large amount of high-boiling point components and a low-boiling point refrigerant containing a large amount of low-boiling point components. Then, the low-boiling point refrigerant is circulated in an evaporator 4 to increase an evaporating pressure in respect to an evaporating temperature and to increase a suction pressure of a compressor 1. In addition, the high-boiling point refrigerant flowing in a bypass circuit 14 is heat exchanged with high pressure liquid flowed out of a condenser 2, thereby an evaporating latent heat of the high-boiling point refrigerant flowing in the bypass circuit 14 is recovered so as to reduce a loss caused by flowing the high-boiling point refrigerant to the bypass circuit 14.

59. 发明专利

JP2011169585A Heat exchanger 审中-公开
标题翻译：热交换器
公开(公告)号：JP2011169585A
公开(公告)日：2011-09-01
申请号：JP2011101403
申请日：2011-04-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAGA KUNIHIKO , NAKAYAMA MASAHIRO , MORISHITA KUNIHIRO , TANABE YOSHIHIRO , ISHIBASHI AKIRA , YAMADA KENICHI , EDAYOSHI ATSUSHI , ONO TATSUO
IPC分类号： F28F1/32
摘要： PROBLEM TO BE SOLVED: To provide a heat exchanger capable of suppressing peeling flow behind pipes, reducing pressure loss and increasing heat exchange capacity under the same air blower input. SOLUTION: The heat exchanger includes: the plurality of pipes 1 inside which a refrigerant is made to flow; a fin 2 which is provided along a flow 4 of air current and through which the plurality of pipes 1 are penetrated; and cut and raised portions 3 provided on the surface of the fin 2. The cut and raised portion 3 is provided in a region between the plurality of pipes 1 juxtaposed in the step direction and at least on the downstream side from a centerline interconnecting centers of the plurality of pipes 1, and a leg part 3a of the cut and raised portion 3 is provided near the pipe 1 along the outer peripheral face of the pipe 1. The width (a) of the cut and raised portion 3 along the flow 4 of air current is set to be ≥1/4 and ≤1/3 of the outside diameter Dc of a fin collar 5 in a pipe penetrating part of the fin 2. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够抑制管道后面的剥离流动的热交换器，在相同的鼓风机输入下减少压力损失和增加热交换容量。解决方案：热交换器包括：使制冷剂流动的多个管1; 翅片2，沿着气流4设置，多个管1穿过该翅片2; 以及设置在翅片2的表面上的切起部3。切起凸部3设置在从台阶方向并列的多个管1的至少中下游侧的中心线的中心线的中心线沿着管1的外周面将多根管1和切起部3的腿部3a设置在管1附近。沿着流路4的切起部3的宽度（a）的气流被设定为翅片2的穿透管的翅片套环5的外径Dc的≥1/ 4和≤1/ 3。版权所有（C）2011，JPO＆INPIT

60. 发明专利

JP2005207734A Air conditioner and its control method 有权
标题翻译：空调及其控制方法
公开(公告)号：JP2005207734A
公开(公告)日：2005-08-04
申请号：JP2005111598
申请日：2005-04-08
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAKAMARU KOICHI , NAKAYAMA MASAHIRO , AOKI KATSUYUKI , YOSHIKAWA TOSHIAKI , AOYAMA NAOKI
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To solve problems wherein a condition of a refrigerating cycle is difficult to be grasped, and a setting function is not utilized sufficiently to bring low comfortability even when humidity is settable in multistage. SOLUTION: This air conditioner is provided with a refrigerating cycle connected with a compressor 1, a four-way valve 2, an indoor heat exchanger 5 and an outdoor heat exchanger 3, and using a medium having a lower pressure loss of the medium than that of R22 medium, an indoor fan 7 for generating an air flow passing through the indoor heat exchanger 5, an outdoor fan 6 for generating an air flow passing through the outdoor heat exchanger, a humidity determination part 8c for determining the set humidity in the multistage, and a control part 8 for controlling the refrigerating cycle, the indoor fan 7 or the outdoor fan 6 to be brought into the set humidity. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了解决难以掌握制冷循环的状况的问题，即使在多级设定湿度时，也不能充分利用设定功能，使舒适性降低。解决方案：该空气调节器设置有与压缩机1，四通阀2，室内热交换器5和室外热交换器3连接的制冷循环，并且使用具有较低压力损失的介质比室内热交换器5产生空气流的室内风扇7，通过室外热交换器的空气流的室外风扇6，湿度判定部8c，在多级中，以及用于控制制冷循环的控制部8，室内风扇7或室外风扇6处于设定湿度。版权所有（C）2005，JPO＆NCIPI

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