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51. 发明专利

JPH0886594A MOUNTING STRUCTURE FOR CLEANING DEVICE OF AIR CONDITIONER 失效
公开(公告)号：JPH0886594A
公开(公告)日：1996-04-02
申请号：JP22472594
申请日：1994-09-20
申请人： HITACHI LTD , AICHI ELECTRIC CO LTD
发明人： NAGAI MAKOTO , SASAKI TOSHIHARU , IMAO MUNEHIRO , SUGINO MINORU
IPC分类号： F24F13/20 , F28G9/00 , F24F1/00
摘要： PURPOSE: To provide a mounting structure for a cleaning device of an air conditioner, which can be commonly used in fan motors of different sizes at the time of mounting a device body on the fan motor, in the device for cleaning a heat exchanger wherein cleaning liquid is sprayed onto the heat exchanger to remove stains of soot on a ceiling recessed air conditioner. CONSTITUTION: This structure is composed of a tubular body 1 outwardly fitted to a vertically disposed fan motor, a securing means 4 for making a top portion of the tubular body detachably engage with an upper peripheral portion of the fan motor and a supporting means for supporting a device body in a bottom portion of the tubular body. The securing means 4 comprises a rubber band of a specified length, an upper hook fastened to a top end of the rubber band so as to be hooked to the upper peripheral portion of the fan motor and a lower hook fastened to a bottom end of the rubber band so as to be hooked to a lower peripheral portion of the tubular body. The tubular body may be of a connected structure wherein a lower small diameter portion and an upper large diameter portion to be outwardly fitted to the fan motor are connected with each other or a flange portion may be protrusively formed on an internal circumference of the bottom end portion.

52. 发明专利

JPH0828907A AIR CONDITIONER 失效
公开(公告)号：JPH0828907A
公开(公告)日：1996-02-02
申请号：JP15836394
申请日：1994-07-11
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： ODA MASAHIRO , YAMADA SHINICHIRO , NAKAMURA KENICHI , IMAGAWA MASAHARU , NAGAI MAKOTO , MOCHIZUKI YOSHIHIKO
IPC分类号： F24F5/00
摘要： PURPOSE:To simplify a design of products with an excellent external appearance by deriving pipings and wirings from the lower part of a unit and improving general-purpose properties of laying the pipings and the elimination of piping work by providing versatility. CONSTITUTION:There are provided a piping lead-out hole 2 and wiring lead-out holes 3, 4 in an outdoor unit 1 of a floor installation air conditioner 1. For laying pipings for connection with an indoor unit the piping once taken out in the lower direction is altered in its direction to longitudinal, lateral, and downward directions.

53. 发明专利

JPH07121465A COMMUNICATION CONTROL PROGRAM STORAGE PROPRIETY DECISION SYSTEM 失效
公开(公告)号：JPH07121465A
公开(公告)日：1995-05-12
申请号：JP27025793
申请日：1993-10-28
申请人： HITACHI LTD
发明人： NAGAI MAKOTO
IPC分类号： G06F15/00 , G06F13/00
摘要： PURPOSE:To avoid on-line down in advance and to improve the working efficiency at the time of generating an on-line system by defining an on-line constitution definition parameter as input data, calculating memory required amount and performing the storage propriety decision of the main storage device of a communication controller. CONSTITUTION:A user prepares the constitution definition parameter 4 for generation of communication control program to which the main storage capacity value definition sentence 41 of the main storage device 51 in a communication controller is added from a terminal equipment 6 and starts a communication control program generator 1. A count calculation decision processing part 2 inputs a constitution definition parameter 4, counts the definition sentence for calculating the memory required amount of the communication controller for a counter table 3, calculates memory required amount based on the enumeration calculating formula of the memory required amount of tire existing communication controller in an explanation manual, compares the amount and the main storage capacity value of the main storage device 51 within the communication controller and outputs no generation of a communication control program if the storage is impossible and deficient memory amount as a decision result to an output device 7.

54. 发明专利

JPH06323693A DISTRIBUTOR 失效
公开(公告)号：JPH06323693A
公开(公告)日：1994-11-25
申请号：JP11022693
申请日：1993-05-12
申请人： HITACHI LTD
发明人： ITO MASAHIRO , CHIAKI TAKAO , IZUSHI MINETOSHI , NAGAI MAKOTO , TAKENAKA HIROSHI , ODA MASAHIRO , YASUDA HIROSHI
IPC分类号： F25B41/00
摘要： PURPOSE:To improve the processing accuracy of a distributor and unify the amount of refrigerant to be distributed by forming a distributing flow passage hole gathering center in a shape of a ball. CONSTITUTION:Two-phased refrigerant stream flowing through a gathering flow passage hole 2 as indicated by an arrow, while passing by a nozzle part 11, becomes a jetstream and flows out. The jetstream flowing out is distributed by a distributing flow passage hole 1 and then flows out to a heat changer. At this time, by forming a distributing flow passage hole gathering center 4 in a spherical surface, a treatment tolerance of the distributing flow passage hole 1 and a displacement of a tip end position of the distributing flow passage hole gathering center 4 from the central position of the gathering flow passage hole 2 can be absorbed. Further, the refrigerant which flows in collides with the distributing flow passage hole gathering center 4, and is then distributed smoothly along the spherical surface as indicated by arrows and flows out. Thus, the amount of refrigerant distribution can be unified.

55. 发明专利

JPH06317333A CEILING-BURIED TYPE COOLING/HEATING AIR CONDITIONER 失效
公开(公告)号：JPH06317333A
公开(公告)日：1994-11-15
申请号：JP10645693
申请日：1993-05-07
申请人： HITACHI LTD
发明人： SHIMOIDE SHINICHI , WATANABE MASATOSHI , TAKADA YOSHIHIRO , SATO RYOJI , NAGAI MAKOTO , OKAMOTO JOJI
IPC分类号： F24F1/00 , G10K11/16
摘要： PURPOSE:To reduce air flowing sound of a ceiling-buried type cooling/heating air conditioner by so forming an end of a radiating fin of a heat exchanger at an upstream side as to become substantially equal direction to that of an air flow near the end. CONSTITUTION:An end 14 of a radiating fin 9 of a circular heat exchanger 2 placed in an indoor unit 6 of a ceiling-buried type cooling/heating air conditioner is so inclined at an upstream side of the fin 9 as to become substantially equal in a direction of an absolute velocity of the air discharged from a fan 3, and the fins 9 are radially provided. As a result, the air flow from the fan 3 does not collide with the end 14 but heat exchanges while flowing along the end 14 and the fins 9 in the exchanger 2, and hence decreases in air flowing resistance upon colliding to reduce air flowing sound generated from the fin 9, thereby suppressing generation of flowing sound such as piping sound, etc., at the time of colliding with the end 14.

56. 发明专利

JPH0678820B2 失效
公开(公告)号：JPH0678820B2
公开(公告)日：1994-10-05
申请号：JP3299886
申请日：1986-02-19
申请人： HITACHI LTD
发明人： NAGAI MAKOTO , HANADA MASAMICHI , HORIUCHI ISAMU , SATO ICHIRO
IPC分类号： F24F13/22 , F24F1/00

57. 发明专利

JPH06129694A MULTIPLE-COMPRESSOR AIR CONDITIONER 失效
公开(公告)号：JPH06129694A
公开(公告)日：1994-05-13
申请号：JP27873992
申请日：1992-10-16
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： KURITA YOSHIAKI , SAKUMA KOJI , TAKENAKA HIROSHI , ITO MASAHIRO , NAGAI MAKOTO , TANIGUCHI MASAYA
IPC分类号： F24F11/02 , F25B1/00
摘要： PURPOSE:To provide an air conditioner having a plurality of compressors which have control means for effectively executing an overcurrent control of the compressors even if electric characteristics of the compressors are different from each other. CONSTITUTION:Current transformers 5a, 5b respectively detect compressor operating currents i1, i2 of compressors 1a, 1b. Bridge rectifiers 6a, 6b and smoothing capacitors 7a, 7b convert the currents i1, i2 into detection voltages V1, V2 and send them to an A/D converter 8. The converter 8 converts the voltages V1, V2 into digital signals and sends them to a microcomputer 11. The microcomputer 11 controls the compressor 1a based on the digitally converted voltage V1 and a value of an overcurrent set value table 9, and controls the compressor 1b based on the digitally converted voltage V2 and a value of an overcurrent set value table 10. Thus, even if electric characteristics of the compressors 1a, 1b are different, they can be overcurrent- controlled.

58. 发明专利

JPH03255829A OUTDOOR DEVICE FOR AIR CONDITIONER 失效
公开(公告)号：JPH03255829A
公开(公告)日：1991-11-14
申请号：JP5365290
申请日：1990-03-07
申请人： HITACHI LTD
发明人： SHIMOIDE SHINICHI , SATO RYOJI , NAGAI MAKOTO , TERADA HIROKIYO , HORIUCHI ISAMU , CHIAKI TAKAO , KITANI FUMIHIKO , TAKADA YOSHIHIRO
IPC分类号： F24F5/00
摘要： PURPOSE:To reduce the blast noise of a fan and to enhance heat exchanging efficiency by uniformizing the velocity distribution of air passing through the respective parts cf a heat exchanger in the circumferential direction thereof by changing the distance between the leading end surface of a bell mouth and the lower end of the fan along the circumferential direction of the fan. CONSTITUTION:A shroud 9 constituted so that the distance DELTAa between the upper end part 16 of the shroud 9 and the leading end part 14 of a bell mouth becomes large gradually on the 1/2 outer circumference of a circle of a fan inserting opening part and becomes small gradually on the other 1/2 outer circumference of a circle thereof is provided to the upper surface of a unit. Since the distance DELTA between the leading end part 14 of the mouth and the lower end surface 13 of a fan 7 changes in the circumferential direction of the fan, the area of a heat exchanger element 2x changes in inverse proportion according to the distance DELTA to act so as to uniformize the velocity distribution of air in the circumferential direction of the respective parts of a heat exchanger 2. As a result, since heat exchange efficiency is increased and the max. value of air velocity becomes low, the air passing resistance of the heat exchanger is reduced and blast noise is reduced with the reduction in the load of the fan.

59. 发明专利

JPH0359325A SIDE OUTLET TYPE AIR CONDITIONER 失效
公开(公告)号：JPH0359325A
公开(公告)日：1991-03-14
申请号：JP19146889
申请日：1989-07-26
申请人： HITACHI LTD
发明人： HOJO TOSHIYUKI , TERADA HIROKIYO , NAGAI MAKOTO , HAMAIDE NOBUMASA , KURODA SHIGEAKI , NAMIKATA RUMI
IPC分类号： F24F1/00
摘要： PURPOSE:To effectively mix the air in a room by providing air inlet ports at the central parts of both side surfaces of a main body and air outlet ports at the upper and lower parts of the main body, disposing a heat exchanger at the central part within the main body and a blower for blowing the air to both sides at the upper and lower parts, respectively, and opening the outlet ports on both sides of the blower in an obliquely vertical direction and in such a manner that the outlet ports on the right and left sides are arranged alternately. CONSTITUTION:A blowing device consisting of a casing 3 and a fan 6 capable of blowing air out of the right and left side surfaces of a main body 1 is set in each of the upper and lower parts of the main body 1 formed into longitudinarily elongated configuration, a heat exchanger 2 being held between the two blowing devices, and the main body 1 is connected to each of the casing 3 by air outlet ports 5. A space in the main body wherein the heat exchanger 2 is set is also connected to air inlet ports 4. The air stream sucked in through a fan inlet port 41 opening to the center of the casing 3 and blown right and left by the fan 6 is vertically inclined in its main stream at the sectorial part of the casing 3, and, at the air outlet ports 5 of the main body, the air streams distributed vertically in the range of about 10 deg. can be obtained. Since the air blown right and left flows at an angle alternately in the vertical direction, an air circulation is caused not only in the horizontal direction but also in the vertical direction, and the vortex-like mixture of the air is effected in a room.

60. 发明专利

JPH0271027A DEVICE AND METHOD FOR AIR CONDITIONING 失效
公开(公告)号：JPH0271027A
公开(公告)日：1990-03-09
申请号：JP10005189
申请日：1989-04-21
申请人： HITACHI LTD
发明人： KURODA SHIGEAKI , KOKUNI KENSAKU , TERADA HIROKIYO , NAGAI MAKOTO , CHIAKI TAKAO , HANADA MASAMICHI
IPC分类号： F24F1/00 , F24F13/32
摘要： PURPOSE:To make the occupants less conscious of their being in an air- conditioned space and coordinate the front panel of an air conditioner with the interior design by forming inlets and outlets for air in the sides of the front panel of the indoor unit. CONSTITUTION:Inside an indoor air-conditioning unit, a heat exchanger 7 bent at an obtuse angle at the middle is mounted in the middle of the unit and a moisture-removing tray 8 is provided immediately below it. Over and under the heat exchanger 7 respectively are installed blowers 92, 93 whose casings 921, 931 respectively are designed to take in air from the left and the right in the middle in the upright direction of the front cover 1 and send the air out toward the left and the right, that is two way blow, both at the upper and the lower parts of the unit. Below the upper air outlets 3 in the unit are installed the blowers 92, 93 and also a control panel 4 for the control of the unit as a whole. Screens 5 are provided at the top and the bottom of the unit and between the air inlet and the respective air outlets.

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