CN1151017A - Method for manufacture of heat exchanger, particularly for manufacture of condenser for vehicle air-conditioning systems - Google Patents
Method for manufacture of heat exchanger, particularly for manufacture of condenser for vehicle air-conditioning systems Download PDFInfo
- Publication number
- CN1151017A CN1151017A CN96111809.1A CN96111809A CN1151017A CN 1151017 A CN1151017 A CN 1151017A CN 96111809 A CN96111809 A CN 96111809A CN 1151017 A CN1151017 A CN 1151017A
- Authority
- CN
- China
- Prior art keywords
- distributor
- pipe fitting
- dividing plate
- pipe
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000004378 air conditioning Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
- B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
- F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0243—Header boxes having a circular cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The heat exchanger (10) includes a pair of parallel distributors (12, 14) and a plurality of tubes (16) for the passage of fluid. Each distributor comprises a tubular element (20) and a plurality of partitions (22) which divide the interior of the tubular element (20) into a plurality of chambers(24a, 24b,24; 26a, 26b, 26c) aligned with each other along the axis of the distributor. The partitions are inserted from an open end(28) of the tubular element and are positioned at predetermined points by being slid along the longitudinal axis(30) of the tubular element. Subsequently, a series of apertures (42) is formed in the wall of the tubular element to act as couplings for the ends of tubes for the passage of fluid.
Description
The present invention relates to make heat exchanger, particularly make the method for the condenser of air conditioning system for vehicle.
More particularly, the present invention relates to make a kind of like this method of heat exchanger, this heat exchanger comprise pair of parallel distributor and a plurality of between distributor, extend be used for the pipe that fluid flows, wherein, each distributor is holding the dividing plate that a plurality of inside with distributor are divided into the chamber that is in alignment with each other along the axis of distributor.
Such heat exchanger is used as the condenser of air conditioning system for vehicle usually, and is called the condenser of " concurrent flow " in the art.The dividing plate that is provided with in distributor can produce constrained path, make whole liquid stream can adjoining land by each continuous array of pipes on from the import of heat exchanger to the path of outlet.Existence at the distributor internal partition means, the pipe of two distributors interconnection has been divided into several groups that are one another in series, simultaneously, and the pipe connection parallel to each other in every group.
Dividing plate is placed on initial known system in the distributor since two and half shells, and each half shell is actually along the form of the pipe that cuts by a plane of its longitudinal axis.Dividing plate one of is arranged in two and half shells according to the precalculated position, then the peripheral seam of this two and half shell along them is welded together.
The major defect of this system is half shell that it need provide two separation to each distributor, and these half shells can not obtain as standarized component usually.In addition, this system also is difficult to realize automation, and along the welding of the seam between two and half shells, from the viewpoint of the reliability of heat exchanger, be very crucial, because it can increase the danger of fluid loss, particularly be used under the condition of high temperature and high pressure, all the more so.
The another one known system that dividing plate is introduced distributor is that the extruding pipe from the circular section begins, and makes otch in the position that dividing plate will be set on the wall of pipe.Then dividing plate is put into pipe by these otch, by welding otch is sealed subsequently.
The problem of this second system is that the distributor that processes is having a large amount of possible fluid loss positions near near the incision of being put into by its dividing plate.
United States Patent (USP) 4762152 has been described a kind of system, and wherein, dividing plate is to put into from an open end of distributor, and along endwisely slipping, till they reach the precalculated position.Fluid flow pipe is fixed on from the outstanding whole annex of the outer surface of distributor, and these whole annexes are to form by machining or the plastic deformation that forms smear metal.Though the system of describing in United States Patent (USP) 4672152 that is used for fixing dividing plate has reduced the danger of fluid loss effectively, but, it must form and the such fact of the integrant annex of the distributor of fixing tube, makes manufacturing cost increase, and this can not make us accepting.
In order to overcome these problems, the invention provides method with the feature that constitutes the main claim theme.
According to the present invention, distributor is to utilize standard pipe fitting extruding or that draw, and dividing plate is constituted from its open end insertion.Dividing plate slides by the longitudinal axis along pipe fitting and is placed on the precalculated position.After placing dividing plate, on the wall of pipe fitting, make a plurality of holes, this hole is inserted in the end that is used for the pipe of fluid circulation.These holes are by material being made to the interior overturn of distributor, do not formed cutting, and form the lasso that is used for fixing the end of pipe and clamps dividing plate in the axial direction.
The inventive method can significantly reduce the production cost of finished product heat exchanger, and can significantly reduce the fluid loss zone, and therefore, this distributor has the less waste that is caused by fluid loss, and heat exchanger is more reliable.
Though the present invention is in particular as the condenser of air-conditioning system and develops,, should be pointed out that the inventive method also is applicable to the distributor of making various types of heat exchangers.
Other features and advantages of the present invention in conjunction with the accompanying drawings can be clearly from the following detailed description as just limiting examples.
Fig. 1 is the exploded perspective illustration of heat exchanger of the present invention;
Fig. 2 is the schematic illustration that has the fluid flow part in the heat exchanger of distributor of the chamber that aligns;
Fig. 3-Fig. 6 is the schematic illustration of the several stages of the inventive method.
At first, consult accompanying drawing 1, comprise generally by the heat exchangers of 10 expressions, the condenser of an air conditioning system for vehicle for example, and comprise the distributor 12 and 14 of a pair of layout parallel to each other.A plurality of pipe 16 sons extend between two distributors 12 and 14, and the inside of their end and distributor 12,14 is connected.Pipe 16 is fixed on one group of metal fin 18,, thereby at the fluid of circulation in pipe with flow through the network system of formation heat exchanger between the air of fin 18.Preferably, the cross section of pipe 16 is oval and utilizes the mechanical expansion method to be fixed on the fin 18: promptly, pipe has in the hole of the alignment of inserting one group of fin 18 with gap, and the mechanical connection between pipe 16 and the fin 18 utilizes mechanical expansion technology to reach by the radial dilatation of pipe.
From accompanying drawing 2 as seen, each distributor 12 and 14 comprises a pipe fitting 20, is furnished with a plurality of dividing plates 22 in pipe fitting 20, thereby the inside of pipe fitting 20 is divided into a series of chambers that vertically are in alignment with each other along distributor.
In the shown by way of example schematic diagram, each distributor 12,14 all has two dividing plates in accompanying drawing 2, and these dividing plates are divided into three chambers with the inside of pipe fitting 20, chamber in distributor 12 is used 24a respectively, 24b, and 24c represents, chamber in distributor 14 is used 26a respectively, 26b, and 26c represents.It is 16a that dividing plate 22 is divided into label with pipe 16,16b, and 16c, 16d, several groups of 16e, these pipe groups are in series connection each other with respect to the direction of fluid circulation.On the other hand, the pipe connection parallel to each other in every group.The number of pipe reduces from one group to next group gradually along the direction that fluid flows in every group, because under the situation of condenser, fluid enters as steam and leaves with liquid condition, in the process of state variation, volume reduces greatly.
Referring now to accompanying drawing 3-6, introduce the assembling sequence of distributor 12,14.At first, with reference to accompanying drawing 3, the manufacturing of distributor is from cutting out the predetermined length from the pipe fitting 20 of commercial extruder.Pipe fitting 20 is aluminium normally, and for example 20 millimeters diameter and 1.5 millimeters wall thickness can be arranged.Certainly, the size of pipe fitting can change according to its purposes.Accompanying drawing 3 illustrates, and how dividing plate 22 inserts in it from the open end 28 of pipe fitting 20, and according to the indicated direction of arrow along the longitudinal axis 30 slide, till they reach predetermined axial location.
Each dividing plate 22 can have substantially and is the cross section of C shape, as shown in Figure 3, perhaps can be made of solid disk.Under the situation that is C tee section spare, the circumferential wall 34 of dividing plate 22 constitutes a guiding piece, because it has enough length on the direction of longitudinal axis 30, thereby can avoid being stuck during its sliding motion.Therefore this C shape allows that employing thin plate (for example 1 millimeters thick) comes as dividing plate.When dividing plate was solid disk, its thickness must thicker (for example 3-4 millimeter), so that give enough thick circle bearing surface.
The diameter of the inner surface 36 of 34 pairs of pipe fittings 20 of circumferential wall of each dividing plate 22 is made close tolerance, and utilizes pole 38 to promote along axis 30, till it reaches its rearmost position.Certainly, at first the dividing plate of locating farthest apart from open end 28 to be inserted.
After in all dividing plates 22 are placed on pipe fitting 20, on tube wall, make a series of otch again, so that be many perforates that are connected to form at the two ends of pipe 16.Accompanying drawing 4 schematically shows the step of making otch.The proper tools that pipe fitting 20 usefulness are provided with a series of cutting knifes 40 is maintained fixed, and cutting knife can be along the direction feeding perpendicular to the longitudinal axis 30 of pipe fitting 20.Cutting knife 40 constitutes otch and makes material not produce cutting to the tube interior upset, and this is very important, does not remove cutting because the existence of dividing plate is not allowed.For fear of subsiding of pipe, hole 42 can be in two steps or more step make.For example, all even hole can be by making in first step with the feeding of their corresponding cutting knifes 40, and make by the feeding of all the other cutting knifes in the odd number hole then.Cutting knife 40 inwardly overturns edges of metal sheet, thereby forms lasso 43 (accompanying drawing 5), and the shape and size of lasso are configured so that to hold the end of pipe 16.
Accompanying drawing 5 shows the situation of the step pipe fitting 20 at the end of making otch 42.Therefrom as seen, each dividing plate 22 is contained in two places, space between the adjacent hole 42, and can prevent its moving axially in pipe fitting 20 by the material overturning that constitutes lasso 43.
In step subsequently, as shown in Figure 6, in the end patchhole 42 of pipe 16, and around otch 42, carry out brazing, thereby pipe 16 is connected on the pipe fitting 20 firmly.
At last, in order to finish distributor, then fluid inlet/outlet connection is installed in an end of pipe fitting 20, and opposite end seals in a known manner.Perhaps fluid inlet and outlet connection are formed on the circumferential wall of distributor, and in this case, the two ends of distributor all to seal.
Claims (4)
1. method of making heat exchanger, particularly make the method for the condenser of air conditioning system for vehicle, wherein, heat exchanger (10) comprises the distributor (12 of pair of parallel, 14) and a plurality of at distributor (12, that extends 14) is used for the pipe (16) that fluid flows, wherein, and each distributor (12,14) comprise that a pipe fitting (20) and a plurality of inside with pipe fitting (20) are divided into along distributor (12,14) chamber that axis is in alignment with each other (24a, 24b, 24; 26a, 26b, dividing plate 26c) (22), wherein, dividing plate (22) inserts from the open end (28) of pipe fitting (20), and utilization is arranged in the precalculated position along the slip of the longitudinal axis (30) of pipe fitting (20), it is characterized in that, after dividing plate (22) inserts, make a plurality of holes (42) that have the turned rim that forms lasso on the wall of pipe fitting (20), clamping is on the throne along the longitudinal with dividing plate for this lasso, then, the end of pipe (16) is inserted in the corresponding hole (42), and the end is welded on the distributor.
2. the method for claim 1 is characterized in that, dividing plate (22) is made that internal diameter with pipe fitting (20) matches and tight dimensional tolerance.
3. as claim 1 or 2 described methods, it is characterized in that hole (42) make with the instrument that has a cutting knife (40), cutting knife can be along the direction feeding perpendicular to the longitudinal axis of pipe fitting (20), so that realize otch and make the material upset, and do not produce cutting.
4. method as claimed in claim 3 is characterized in that, hole (42) are divided at least two groups, and make in continuous step in this hole of two groups.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT95TO000673A IT1280900B1 (en) | 1995-08-07 | 1995-08-07 | PROCEDURE FOR THE PRODUCTION OF A HEAT EXCHANGER, IN PARTICULAR FOR THE PRODUCTION OF A CONDENSER FOR SYSTEMS |
| ITT095A000673 | 1995-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1151017A true CN1151017A (en) | 1997-06-04 |
| CN1114815C CN1114815C (en) | 2003-07-16 |
Family
ID=11413782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96111809.1A Expired - Fee Related CN1114815C (en) | 1995-08-07 | 1996-08-06 | Method for manufacture of heat exchanger, particularly for manufacture of condenser for vehicle air-conditioning systems |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0757928B1 (en) |
| JP (1) | JPH09119795A (en) |
| CN (1) | CN1114815C (en) |
| AR (1) | AR004504A1 (en) |
| BR (1) | BR9604065A (en) |
| DE (1) | DE69611640T2 (en) |
| ES (1) | ES2155552T3 (en) |
| IT (1) | IT1280900B1 (en) |
| PL (1) | PL315538A1 (en) |
| TR (1) | TR199600651A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482346B (en) * | 2008-01-09 | 2012-10-10 | 德尔菲技术公司 | Distributor tube subassembly |
| CN102735092A (en) * | 2012-06-27 | 2012-10-17 | 浙江金宸三普换热器有限公司 | Novel parallel flow heat exchanger with flow separating structure |
| CN103769468A (en) * | 2012-10-19 | 2014-05-07 | 张荣伟 | Production method of cooling patch plug and product thereof |
| CN106066102A (en) * | 2016-05-31 | 2016-11-02 | 浙江富源制冷设备股份有限公司 | A kind of microchannel side air-out condenser and installation method thereof |
| CN107606825A (en) * | 2016-07-12 | 2018-01-19 | 株式会社京滨冷暖科技 | Condenser |
| CN114623704A (en) * | 2022-03-04 | 2022-06-14 | 德帕姆(杭州)泵业科技有限公司 | Tubular heat exchanger |
| CN114734398A (en) * | 2022-05-07 | 2022-07-12 | 阜阳市节能化工工程有限公司 | Processing post-treatment device for ketone tower gas cooler |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743427B4 (en) * | 1997-10-01 | 2007-05-03 | Behr Gmbh & Co. Kg | Heat exchanger |
| DE19911334A1 (en) * | 1999-03-15 | 2000-09-21 | Behr Gmbh & Co | Collecting tube for a heat exchanger and manufacturing process therefor |
| ITPD20120073A1 (en) * | 2012-03-09 | 2013-09-10 | Idrotermica Veneta Zeggio S P A | METHOD FOR THE REALIZATION OF A MANIFOLD WITH MORE THAN AREAS OF RECIRCULATION AND DISTRIBUTION FOR HYDRAULIC SYSTEMS, AND MANIFOLD MADE WITH THIS METHOD |
| CN105135753A (en) * | 2015-08-12 | 2015-12-09 | 浙江康盛热交换器有限公司 | Micro channel heat exchanger for heat pump air conditioner |
| CN107175464A (en) * | 2017-05-09 | 2017-09-19 | 柳州申通汽车科技有限公司 | The processing technology of automotive air-conditioning condenser |
| CN107160121A (en) * | 2017-05-09 | 2017-09-15 | 柳州申通汽车科技有限公司 | The processing method of car condenser core body |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE326681B (en) * | 1968-12-03 | 1970-08-03 | Olofstroem Ab | |
| FR2538526B1 (en) * | 1982-12-22 | 1986-12-19 | Chausson Usines Sa | COLLECTOR PLATE FOR TUBE AND WATER BOX HEAT EXCHANGER |
| US4679289A (en) * | 1986-08-15 | 1987-07-14 | Brazeway, Inc. | Method and apparatus for forming intruded branch attachment structures in tubing |
| JPH0321665U (en) * | 1989-07-14 | 1991-03-05 | ||
| US5193613A (en) * | 1992-06-30 | 1993-03-16 | Wallis Bernard J | Heat exchanger header tube and method of making |
| FR2713114B1 (en) * | 1993-12-01 | 1996-01-19 | Valeo Thermique Moteur Sa | Improvements in the manufacture of a heat exchanger, in particular for vehicles. |
-
1995
- 1995-08-07 IT IT95TO000673A patent/IT1280900B1/en active IP Right Grant
-
1996
- 1996-07-24 ES ES96111912T patent/ES2155552T3/en not_active Expired - Lifetime
- 1996-07-24 DE DE69611640T patent/DE69611640T2/en not_active Expired - Fee Related
- 1996-07-24 EP EP96111912A patent/EP0757928B1/en not_active Expired - Lifetime
- 1996-08-06 PL PL96315538A patent/PL315538A1/en unknown
- 1996-08-06 JP JP8207246A patent/JPH09119795A/en active Pending
- 1996-08-06 CN CN96111809.1A patent/CN1114815C/en not_active Expired - Fee Related
- 1996-08-06 BR BR9604065-3A patent/BR9604065A/en not_active IP Right Cessation
- 1996-08-06 AR ARP960103898A patent/AR004504A1/en unknown
- 1996-08-07 TR TR96/00651A patent/TR199600651A1/en unknown
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482346B (en) * | 2008-01-09 | 2012-10-10 | 德尔菲技术公司 | Distributor tube subassembly |
| CN102735092A (en) * | 2012-06-27 | 2012-10-17 | 浙江金宸三普换热器有限公司 | Novel parallel flow heat exchanger with flow separating structure |
| CN102735092B (en) * | 2012-06-27 | 2013-11-06 | 浙江金宸三普换热器有限公司 | Novel parallel flow heat exchanger with flow separating structure |
| CN103769468A (en) * | 2012-10-19 | 2014-05-07 | 张荣伟 | Production method of cooling patch plug and product thereof |
| CN103769468B (en) * | 2012-10-19 | 2016-12-21 | 张荣伟 | A kind of method making heat radiation patch plug and goods thereof |
| CN106066102A (en) * | 2016-05-31 | 2016-11-02 | 浙江富源制冷设备股份有限公司 | A kind of microchannel side air-out condenser and installation method thereof |
| CN107606825A (en) * | 2016-07-12 | 2018-01-19 | 株式会社京滨冷暖科技 | Condenser |
| CN114623704A (en) * | 2022-03-04 | 2022-06-14 | 德帕姆(杭州)泵业科技有限公司 | Tubular heat exchanger |
| CN114734398A (en) * | 2022-05-07 | 2022-07-12 | 阜阳市节能化工工程有限公司 | Processing post-treatment device for ketone tower gas cooler |
| CN114734398B (en) * | 2022-05-07 | 2023-09-29 | 阜阳市节能化工工程有限公司 | Ketone tower gas cooler processing post-treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| AR004504A1 (en) | 1998-12-16 |
| BR9604065A (en) | 1999-10-13 |
| IT1280900B1 (en) | 1998-02-11 |
| ITTO950673A1 (en) | 1997-02-07 |
| ITTO950673A0 (en) | 1995-08-07 |
| TR199600651A1 (en) | 1997-03-21 |
| EP0757928B1 (en) | 2001-01-24 |
| PL315538A1 (en) | 1997-02-17 |
| JPH09119795A (en) | 1997-05-06 |
| EP0757928A1 (en) | 1997-02-12 |
| CN1114815C (en) | 2003-07-16 |
| DE69611640T2 (en) | 2001-05-03 |
| DE69611640D1 (en) | 2001-03-01 |
| ES2155552T3 (en) | 2001-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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