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1. 发明专利

JPH04240017A CUTTING TOOL FOR FLAT TUBE 失效
公开(公告)号：JPH04240017A
公开(公告)日：1992-08-27
申请号：JP769791
申请日：1991-01-25
申请人： MITSUBISHI HEAVY IND LTD , CHURYO ENG
发明人： IKAGAWA HIROSHI , KATO TETSUYA , SHIMIZU YASUHIRO
IPC分类号： B23D21/00
摘要： PURPOSE:To cut the flat tube without accompanying a fine powder like chip, by arranging a holding member which holds the outer peripheral face of a flat tube in the state of almost adhesion at the part excluding the cutting place thereof and which is provided with the guide pass in which a cutting edge member is inserted from one end of the outer peripheral face of the flat tube over to the other end and the discharging pass from which a chip is discharged. CONSTITUTION:A guide pass 23 is aligned to the specified length position with a flat tube 3 being inserted into the penetration pass of a holding member 2, holding members 2a, 2b are clamped and the flat tube 3 is fixed with its adhesion. Then a cutting edge member 1 is inserted along the guide pass 23 and pressed to the other end from one end in the main axis direction of the flat tube 3, the flat tube 3 is cut with its being sheared between the blade 11 formed at the slope side of the cutting edge member 1 and the edge of a flat tube penetrating pass 21. The chip equivalent to the blade thickness formed in this process is cut off with its becoming in two small pieces and discharged downward via a discharging pass 25.

2. 发明专利

JPH10332293A HEAT EXCHANGER 失效
公开(公告)号：JPH10332293A
公开(公告)日：1998-12-15
申请号：JP14358797
申请日：1997-06-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： IKAGAWA HIROSHI , HIGASHIHATA YOSHIFUSA
IPC分类号： B60H1/32 , F28F9/00 , F28F9/02 , F28F9/08
摘要： PROBLEM TO BE SOLVED: To accurately attach side plates to headers without a connection failure and an error. SOLUTION: Both end parts of side plates 14 are respectively inserted into the end parts of a pair of headers, many tubes are provided between the headers located between the side plates 14 and fins are provided between the tubes. A pair of claws 21a and 21b for holding the wall of the header therebetween are provided on both the sides of both end parts of the side plate 14. The pair of claws 21a and 21b regulate the attaching angle and the insert position between the headers and the side plates so that the side plates 14 are accurately attached to the headers with no connection failure nor error and the positions of the headers are accurately determined without generating a possibility of trouble in a piping or the like.

3. 发明专利

JPH06123581A TACKED TYPE HEAT EXCHANGER 失效
公开(公告)号：JPH06123581A
公开(公告)日：1994-05-06
申请号：JP27157192
申请日：1992-10-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAYASHI MASATERU , IKAGAWA HIROSHI
IPC分类号： F28D1/03 , F28F3/02 , F28F3/06 , F28F3/08
摘要： PURPOSE:To facilitate manufacture of a flat tube and to reduce the cost thereof by lessening the number of components. CONSTITUTION:One corrugated inner fin 52 is fitted to two chambers 48 and 49 of a flat tube 41 so as to form a flow passage in divisions by separating it into a plurality of parts. The flow of a refrigerant is made smooth and the area of the flow passage is increased by a small number of components, and facilitation of manufacture of the flat tube 41 and reduction of the cost thereof are attained by lessening the number of the components.

4. 发明专利

JPH0674608A LAMINATED HEAT EXCHANGER 失效
公开(公告)号：JPH0674608A
公开(公告)日：1994-03-18
申请号：JP22822992
申请日：1992-08-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHII KAZUO , IKAGAWA HIROSHI , SAKAI SHIGEO
IPC分类号： F25B39/02 , F28D1/03 , F28F1/40
摘要： PURPOSE:To make a smooth flow of refrigerant, increase a cross sectional area of a flow passage and perform a positive assemblying of a flat tube having some corrugated inner fins. CONSTITUTION:Flow passages 54 and 55 in chambers 48 and 49 of a flat tube 41 are separated into a plurality of segments by corrugated inner fins 52 and 53, divided and formed, thereby flow of refrigerant is made smooth and then a cross sectional area of each of the flow passages is increased. In addition, height P of an edge part 52c of each of the corrugated inner fins 52 and 53 is smaller than a press forming depth Q at the forming parts of the chambers 48 and 49 of the plate 42, a riding of the edge part 52c over a connecting edge 42a of the plate 42 is eliminated and when the two plates 42 are connected to each other, holding and displacement of the corrugated inner fins 52 and 53 are prevented and then the assemblying of the flat tube 41 using the corrugated inner fins 52 and 53 can be surely carried out.

5. 发明专利

JPH0674607A LAMINATED HEAT EXCHANGER 失效
公开(公告)号：JPH0674607A
公开(公告)日：1994-03-18
申请号：JP22822892
申请日：1992-08-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAYASHI MASATERU , ISHII KAZUO , IKAGAWA HIROSHI , KAWAI HIDENAO
IPC分类号： F25B39/02 , F28D1/03 , F28F1/40 , F28F3/06
摘要： PURPOSE:To make a smooth flow of fluid at a flat tube and increase a cross sectional area of a flow passage by a method wherein the flow passage of the flat tube is separated by corrugated inner fins into a plurality of segments and the fins are formed with some irregular portions having a specified size. CONSTITUTION:Corrugated inner fins 52 and 53 are inserted into a chamber portion of a fluid passage 51. The corrugated inner fins 52 and 53 are formed with a plurality of corrugations 52a and 53a in such a manner that the flow passages 54 and 55 are separated into a plurality of segments along a longitudinal direction of the chamber. The fins 52 and 53 are formed with some irregular parts 71 and 72. Thickness of raw material plate of the corrugated inner fin 52 is set to 0.15mm to 0.3mm. Thickness size X of the projection 72 is set to 1. to 2.5 times the thickness size of the recess part 71W. Pitch Y of the irregular surfaces is set to one to 2.5 times the thickness size of the raw material. With such an arrangement, strength of the corrugated inner fins 52 and 53 can be maintained, a flow of fluid can be made smooth, a heat transfer characteristic can be increased and its surface area can also be increased. Pitch Z of the corrugated segments 52a and 53a is set to 6 to 16 times the thickness size of the raw material plate. With such an arrangement, when the plate 42 is connected to it to form a flat tube 41, its pressure withstanding strength can be sufficiently assured.

6. 发明专利

JP2000346582A HEAT EXCHANGER 失效
公开(公告)号：JP2000346582A
公开(公告)日：2000-12-15
申请号：JP15302299
申请日：1999-05-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： WATANABE YOSHINORI , YOSHIKOSHI AKIRA , SUZUKI ATSUSHI , YASUI KIYOTO , IKAGAWA HIROSHI , KOTO HIROYUKI , WATABE MAKOTO , INOUE MASASHI , NAKATO KOJI
IPC分类号： F28D1/03 , F28F3/04
摘要： PROBLEM TO BE SOLVED: To improve the pressure resistant strength of a tube while suppressing a manufacturing cost and to improve heat exchanging performance of a heat exchanger having the tube. SOLUTION: In the heat exchanger for distributing a refrigerant through a flat tube to exchange heat, bulged portions 25 protruding to a refrigerant channel 23 side by recessing first and second walls 21, 22 from an outside are formed, and tops 25a of the portions 25 are brought into contact with one another to form a plurality of columnar portions 26 of an elliptical section in which its major axis is directed in a lengthwise direction of the tube. Further, the portions 26 adjacent obliquely to the lengthwise direction of the tube are partly duplicated and disposed.

7. 发明专利

JPH07294185A ALUMINUM HEAT EXCHANGER HAVING MOLD-PROOF CHARACTERISTIC, AND ITS MANUFACTURE 失效
公开(公告)号：JPH07294185A
公开(公告)日：1995-11-10
申请号：JP8648794
申请日：1994-04-25
申请人： MITSUBISHI HEAVY IND LTD , KANSAI PAINT CO LTD
发明人： SAKAI SHIGEO , IKAGAWA HIROSHI , TAKEUCHI NAOKAZU , HAYASHI MASATERU , KASHIWADA SEIJI , WAKIMOTO MITSUO
IPC分类号： F28F19/01 , F28F1/32 , F28F19/04
摘要： PURPOSE:To improve a continuous effect of mildewproof property of a mildewproof hydrophilic organic resin coating containing mildewproof, germ-resisting agent on the surface of an aluminum heat exchanger with a specific ground-treatment by a method wherein an adhering amount of the mildewproof and germ-resistant agent on an air outlet surface is set to be higher than that on an air inlet surface. CONSTITUTION:Fins 13 of a full aluminum heat exchanger 2 are processed for their ground surface with a chromate treating in such a way that an adhering amount of chromium may become a specific amount. Then, the fins are treated to have hydrophilic characteristic with a hydrophilic treating agent containing mildewproof and germ-resisting agent in hydrophilic polyester resin/acrilic resin mixing type hydrophilic organic resin, for example, so as to form a resin coating. At this time, an adhering amount of the agent on the surface of the air inlet port 4 is higher than the adhering amount of that on an air outlet port 3. In order to attain this state, a heat exchanger 2 formed with a coating is arranged within a rotary cage 1 of a centrifugal separating device with an air inlet 4 being set at an inner side (a side of a rotary shaft 2) and the a centrifugal treatment is applied with a centrifugal force at the air outlet port 3 being increased. Grain size of mildewproof and germ-resisting agent is set to be 5mum or less.

8. 发明专利

JPH0674602A LAMINATED HEAT EXCHANGER 失效
公开(公告)号：JPH0674602A
公开(公告)日：1994-03-18
申请号：JP23118692
申请日：1992-08-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAYASHI MASATERU , ISHII KAZUO , IKAGAWA HIROSHI
IPC分类号： F25B39/02 , F28D1/03 , F28F3/04 , F28F17/00
摘要： PURPOSE:To prevent droplets from being scattered by a method wherein an inner side surface of a side plate is formed with some grooves extending in a vertical direction and projected at an outer surface. CONSTITUTION:An inner surface of a side plate 90 is formed with three grooves 91 extending in a vertical direction and projected at an outer surface. Condensed water at the inner surface of the side plate 90 is guided by the three grooves 91 and flows down. The side plate 90 is formed with a plurality of through-pass holes 92 and a diameter of each of the through-pass holes 92 is set to be gradually increased in its diameter from a lower one to an upper one. Condensed water at an inner circumferential surface of the side plate 90 is discharged out of the heat exchanger through the through-pass holes 92. Thus, it is possible to prevent condensed water from being accumulated inside the side plate 90 and to prevent dew water from being splashed.

9. 发明专利

JPH04289017A METHOD FOR CUTTING CORRUGATED FIN 失效
公开(公告)号：JPH04289017A
公开(公告)日：1992-10-14
申请号：JP5131691
申请日：1991-03-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： IKAGAWA HIROSHI , KAGAYAMA MASAHITO
IPC分类号： B23D15/00 , B23D25/04
摘要： PURPOSE:To shorten cutting off period and improve productivity by cutting off corrugated fin without stopping its run. CONSTITUTION:A servo motor 71, a cam 72 driven by rotation of the servo motor, and a cutting blade 73 reciprocatingly running in parallel with the running direction of corrugated fin are provided. Further, the position of the cutting blade 73 is conformed to the vicinity of a fin top part to be the cutting off position, by changing rotating speed of the servo motor 71, or by moving the running commencement position of the cutting blade 73, against the running speed of the corrugated fin 5 varied due to fin pitch. In the condition holding the relative position, the cutting blade 73 is run in parallel at the same speed as the running speed of the corrugated fin 5 to cut off the corrugated fin 5.

10. 发明专利

JP2000161896A HEAT EXCHANGER AND PRODUCTION THEREOF 失效
公开(公告)号：JP2000161896A
公开(公告)日：2000-06-16
申请号：JP33785598
申请日：1998-11-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： SUZUKI ATSUSHI , YASUI KIYOTO , WATANABE YOSHINORI , YOSHIKOSHI AKIRA , IKAGAWA HIROSHI
IPC分类号： F28F1/02 , F28D1/03 , F28F3/04 , F28F9/18
摘要： PROBLEM TO BE SOLVED: To improve the heat transfer coefficient of a heat exchanger, reduce the weight of the same to curtail production costs, and to facilitate production lines. SOLUTION: A heat exchanger 10 is comprised of a plurality of flat tubes 12 formed of a flat plate 24, a splitter plate portion formed at at least a rear edge of each tube, a notch portion 44 formed in the splitter plate portion of each edge of the tube, and header pipes 14, 15 each having a plurality of tube insertion holes 46 formed therein so as to conform to the shape of the tube, so that each edge of the tube can be inserted thereinto. These tube insertion holes receive the notch portions of the tube such that the notch portions are inserted thereinto, and at the same time prevent the insertion of the splitter plate portion of the tube. Further, the tube has a first surface and a second surface at least one of which has a plurality of dimples 32 formed thereon with their lengths aligned in a direction of flow of a coolant. Still further, a plurality of cooling grooves are formed in the internal surface of the tube along the same direction as the direction of the flow of the coolant.

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