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31. 发明专利

JPS61211671A AIR-COOLED ABSORPTION TYPE HEAT PUMP 失效
公开(公告)号：JPS61211671A
公开(公告)日：1986-09-19
申请号：JP5041785
申请日：1985-03-15
申请人： HITACHI LTD
发明人： KUNUGI TAKAFUMI , OUCHI TOMIHISA
IPC分类号： F25B15/00

32. 发明专利

JP2001147053A TWO-STAGE DOUBLE-EFFECT ABSORPTION REFRIGERATING MACHINE 失效
公开(公告)号：JP2001147053A
公开(公告)日：2001-05-29
申请号：JP32931199
申请日：1999-11-19
申请人： HITACHI LTD
发明人： TAKEDA NOBUYUKI , OUCHI TOMIHISA
IPC分类号： F25B15/00
摘要： PROBLEM TO BE SOLVED: To provide a two-stage double-effect absorption refrigerating machine, which is reduced in size by reducing the liquid retaining quantity of the machine and improved in load responsiveness by safely and surely circulating a liquid. SOLUTION: A two-stage double-effect absorption refrigerating machine is constituted, by operationally connecting a high-temperature regenerator 1A, low-temperature regenerator 1B, condenser 2, first evaporator 3A, first absorber 4A second evaporator 3B, second absorber 4B, liquid heat exchanger, solution circulating pump 6C, refrigerant pumps 7A and 7B, solution spraying pump 6B, etc., through pipeline and uses an aqueous solution of salts, which is prepared to cool the second absorber 4B with a cold heat medium which is lower in temperature than the cold heat medium which cools the first absorber 4A as an absorbing liquid. The liquid reservoir section of the second absorber 4B is positioned larger in height than that of the liquid reservoir section of the first absorber 4A.

33. 发明专利

JPH11287527A ABSORPTION TYPE COLD/HOT WATER GENERATOR 失效
公开(公告)号：JPH11287527A
公开(公告)日：1999-10-19
申请号：JP5661499
申请日：1999-03-04
申请人： HITACHI LTD
发明人： URAKI YASUO , KABETA AKIRA , NAKAO TAKESHI , AIZAWA MICHIHIKO , OUCHI TOMIHISA
IPC分类号： F24F11/02 , F25B15/00
摘要： PROBLEM TO BE SOLVED: To provide an absorption type cold/hot water generator used in a multi type absorption air-conditioning system to perform comfortable air-conditioning and improve facility. SOLUTION: In an absorption cold/hot water generator, a weak solution dilluted by a refrigerant is heated by a high temperature regenerator 25 and a low temperature regenerator 24 to generate refrigerant steam and after, during cooling, refrigerant steam is cooled and condensed by a cooling means, the steam is evaporated by an evaporator 21. Further, during heating, cold/hot water is heated by using refrigerant steam by the evaporator 21 to produce hot water. A refrigerant to cool or heat cold/hot water by the evaporator 21 is absorbed or mixed in a strong solution generated during the generation of refrigerant steam by an absorber 22 to produce a weak solution, which is returned again to the high temperature regenerator 25 and the low temperature regenerator 24. The evaporator 21 and the absorber 22 are arranged in parallel, the condenser 23 and the low temperature regenerator 24 are arranged on the upper side of the evaporator 23 and the absorber 22. Further, the high temperature regenerator 25 is arranged in parallel to the evaporator 21 and the absorber 22. The evaporator apparatus 21 and the absorber 22, and the condenser 23 and the low temperature regenerator 24 are partitioned from each other by a partition plate 45. The partition plate 45 is bent and protruded between the condenser 23 and the low temperature regenerator 24 to form a heat insulation space.

34. 发明专利

JPH11132683A HOT AND CHILLED WATER GENERATOR WITH ABSORBER 失效
公开(公告)号：JPH11132683A
公开(公告)日：1999-05-21
申请号：JP29670497
申请日：1997-10-29
申请人： HITACHI LTD
发明人： KAWAMURA HIRONOBU , NISHIGUCHI AKIRA , OUCHI TOMIHISA , UCHIMURA MITSUYUKI
IPC分类号： F28F1/16 , F25B33/00 , F25B37/00 , F25B39/02 , F25B39/04
摘要： PROBLEM TO BE SOLVED: To enhance wettability on the outer heat transfer surface of a heating tube by specifying the width of a rectangular groove arranged at a specified ratio in the outer heat transfer surface of the heating tube and setting the depth of the groove at a specified ratio of difference between the outside and inside diameters of the heating tube. SOLUTION: A plurality of rectangular grooves 2 are made in the outer heat transfer surface of a heating tube 1 constituting the heat exchanger of heat exchanger element for a low temperature regenerator, a condenser, an evaporator and an absorber. The grooves 2 are arranged in the axial direction of the heating tube 1 at a regular interval in the circumferential direction. Number of the grooves 2 is determined such that 20-70% of the outer circumference of the heating tube 1 is occupied by the grooves 2 with the depth (h) of the groove being set equal to or less than at 1/2 of the overall thickness of the heating tube 1 and the width of the groove being set at 0.1-0.5 mm. When the heating tubes 1 are mounted on the heat exchanger of an evaporator, refrigerant sprayed by a spray unit enters into the grooves 2 in the heating tube 1 and spreads in the axial direction thereof through capillarity thus enhancing wettability.

35. 发明专利

JPH10184918A HIGH HEAT CONDUCTIVE PACKING AND MANUFACTURE OF IT 失效
公开(公告)号：JPH10184918A
公开(公告)日：1998-07-14
申请号：JP34068896
申请日：1996-12-20
申请人： HITACHI CHEMICAL CO LTD , HITACHI LTD
发明人： NISHIMURA KOJI , UCHIDA TATSUYA , YOSHIKAWA TOSHIJI , MACHIZAWA KENJI , OUCHI TOMIHISA
IPC分类号： F16J15/08 , B22F3/11 , B22F5/00 , B22F7/00
摘要： PROBLEM TO BE SOLVED: To improve thermal stress breakage and to provide excellent heat conductivity by preventing leakage by following irregularities of a flange seal surface of a heat device. SOLUTION: In a high head conductive packing, a metallic porous body layer 101 having the porosity in the range of 80 to 99% and the thickness in the range of 1 to 5mm is sintered and formed on the front surface of a packing plate or compressed after being sintered. This packing is provided through a process in which metallic powder is applied onto the front surface of a three- dimensional network structure such as polyurethane foam, laminated on the front surface of the packing plate and heated, the three-dimensional network structure is burnt and removed, and the metallic porous layer is obtained by performing sintering of metal and heat-welded to and integrated with the front surface of the packing plate 102.

36. 发明专利

JPH09280764A PLATE TYPE HEAT EXCHANGER 失效
公开(公告)号：JPH09280764A
公开(公告)日：1997-10-31
申请号：JP9506696
申请日：1996-04-17
申请人： HITACHI LTD , HITACHI TSUCHIURA ENG KK
发明人： NARUSE TAKAO , OUCHI TOMIHISA , WATASE KAZUO
IPC分类号： F28F3/00 , F28F3/04
摘要： PROBLEM TO BE SOLVED: To obtain a plate type heat exchanger high in its heat transfer performance. SOLUTION: Heat transfer plates 2a and 2b whose heat transfer surfaces are formed in zigzag and angular shapes and whose inlets and outlets 4 and 5 for liquid are partly connected in their peripheries are combined together so that a basic plate 1 is formed. A plurality of basic plates 1 are connected and the connected plates are vertically arranged. A sprayer 8 for supplying the liquid downward from an upper part to a lower part is provided above the heat transfer surface outside the respective basic plates 1.

37. 发明专利

JPH08170866A REFRIGERATOR AND DEVICE FOR PREVENTING LEAKAGE OF REFRIGERANT 失效
公开(公告)号：JPH08170866A
公开(公告)日：1996-07-02
申请号：JP31183594
申请日：1994-12-15
申请人： HITACHI LTD
发明人： KUSHIMA HIROSHI , KAWAMURA HIRONOBU , OUCHI TOMIHISA
IPC分类号： F25B15/00 , F25B15/04 , F25B49/04
摘要： PURPOSE: To realize a leak preventer for a refrigerant for a refrigerating machine harmful to a human body such as ammonia. CONSTITUTION: An ammonia recovery container 24 housing an ammonia salt 37 as solid ammonia adsorbent inside is arranged being immersed in an ammonia solution 36 accumulated on a bottom part of an absorber 5 of an absorption refrigerating machine. A pressure plug 26 breakable by a pressure difference is mounted at an upper part of the container 24. When a hole or the like happens to be caused in a part of the refrigerating machine, a differential pressure increases between a pressure within the absorber 5 and an internal pressure of the ammonia recovery container 24 with a drop in the pressure to break the pressure plug 26. Thus, the ammonia contacts an ammonia salt 37 to be adsorbed thereby enabling the leaking thereof outside.

38. 发明专利

JPH06137702A ABSORPTION WATER COLER-HEATER 失效
公开(公告)号：JPH06137702A
公开(公告)日：1994-05-20
申请号：JP29112292
申请日：1992-10-29
申请人： HITACHI LTD
发明人： OUCHI TOMIHISA , NISHIGUCHI AKIRA , KUNUGI TAKAFUMI , NAKAO TAKESHI , MACHIZAWA KENJI , KUSHIMA HIROSHI
IPC分类号： F25B15/00
摘要： PURPOSE:To provide an absorption water cooler-heater in which liquid refrigerant of an evaporator can smoothly be transmitted to the solution side of an absorber by an air lift pump pipe regardless of heat input control carried out in accordance with heating load at the time of heating operation, thereby realizing a good heating cycle and a small temperature variation of hot water. CONSTITUTION:The title absorption water cooler-heater comprises a high temperature regenerator 1, a low temperature regenerator 2, a condenser 3, an evaporator 4, an absorber 5, a solution pump 8, a refrigerant pump 9, solution heat exchangers 6 and 7 and a piping system operationally connecting the above component devises to each other, a passage 26 for heating refrigerant vapor from the condenser 3 to the absorber 5 being of a U-shape so that the liquid refrigerant in the evaporator 4 is made to flow by the pump 9 at the time of cooling operation so as to form liquid seal and that the liquid refrigerant of the evaporator 4 is made to flow to the absorber 5 by the air lift pump for the refrigerant vapor at the time of heating operation. The water cooler-heater is further provided with a plurality of air lift pump pipes 24 (24a, 24b) and a throttled part 30 so that the vapor quantities flowing to the respective air lift pump pipes 24 are different from each other to thereby make the void fractions of the respective air lift pump pipes vary from one to another.

39. 发明专利

JPH05312434A 失效
公开(公告)号：JPH05312434A
公开(公告)日：1993-11-22
申请号：JP11336192
申请日：1992-05-06
申请人： HITACHI LTD
发明人： OUCHI TOMIHISA , NISHIGUCHI AKIRA , NAKAO TAKESHI
IPC分类号： F25B33/00
摘要： PURPOSE:To improve the response to load by reducing the amount of a held fluid by forming a heat transfer pipe of a low temperature regenerator into a specific elliptical cross section, and supplying a diluted fluid from the side of a heating vapor outlet header of a group of the heat transfer pipes while discharging the same from the side of an inflow header of the heating vapor. CONSTITUTION:A solution, which is concentrated by producing a refrigerant vapor by being heated by a high temperature regenerator, is introduced into a low temperature regenerator 2 in an absorption cold/warm water device, and the solution is further heated and concentrated taking the refrigerant vapor produced in the high temperature regenerator as a heat source, and is supplied to a condenser as a concentrated solution. The low temperature regenerator 2 is constructed by fixing opposite ends of a group of heat transfer pipes 21 to a pipe plate through welding, with the heat transfer pipe 21 of elliptical cross section having a ratio of the width to the height 4b of about 1/4. A diluted solution passing through a solution heat exchanger from an absorber is supplied from a solution supply 23 provided on the lower portion of a low temperature regenerator 2 shell located on the side of a heating vapor outlet header of the group of elliptical heat transfer pipes 21, and is discharged from a solution outflow part 25 located on the side of the upper portion of a group of pipes on the side of a heating vapor inflow header.

40. 发明专利

JPH05172438A ABSORPTIVE HOT/COLD WATER MACHINE 失效
公开(公告)号：JPH05172438A
公开(公告)日：1993-07-09
申请号：JP33734091
申请日：1991-12-20
申请人： HITACHI LTD
发明人： OUCHI TOMIHISA , NISHIGUCHI AKIRA , KUSHIMA HIROSHI , YODA HIROAKI , NAKAO TAKESHI
IPC分类号： F25B37/00 , F25B39/02
摘要： PURPOSE:To provide an absorptive hot/cold water machine having a refrigerant and solution dispersion device of a high reliability in its operation which can easily accommodate for important functions for getting a high performance of the absorptive hot/cold water machine such as a variation of an amount of dispersed solution or a distribution of a dispersion density or a requirement of high dispersion density or the like. CONSTITUTION:A refrigerant and solution dispersion device 20 of an absorptive hot/cold machine is composed of a liquid feeding pipe 19, a branch header 19a, a distribution pipe 21 arranged in parallel with a heat transfer pipe, a plurality of liquid distribution orifices 22 opened in the distribution pipe 21, a covering plate 23 fixed to an outside part of the distribution pipe 21 with a certain clearance being spaced apart from the distribution pipe, and a liquid droplet dispersion plate 24 fixed at an inside part of the covering plate 23 with a certain clearance being left against the covering plate 23.

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