CN2711681Y - Corrosion-resisting evaporator for refrigerator - Google Patents
Corrosion-resisting evaporator for refrigerator Download PDFInfo
- Publication number
- CN2711681Y CN2711681Y CN 200420034126 CN200420034126U CN2711681Y CN 2711681 Y CN2711681 Y CN 2711681Y CN 200420034126 CN200420034126 CN 200420034126 CN 200420034126 U CN200420034126 U CN 200420034126U CN 2711681 Y CN2711681 Y CN 2711681Y
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- China
- Prior art keywords
- corrosion
- evaporation tube
- tube
- pur
- heat transfer
- 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.)
- Expired - Fee Related
Links
- 238000001704 evaporation Methods 0.000 claims abstract description 80
- 230000008020 evaporation Effects 0.000 claims abstract description 80
- 230000007797 corrosion Effects 0.000 claims abstract description 25
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 15
- 239000004416 thermosoftening plastic Substances 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000004831 Hot glue Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000002585 base Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a corrosion-resisting evaporator for refrigerator, comprising a heat exchanger plate (10) and an evaporation tube (20) connected with the surface of the heat exchanger plate (10). The whole annular outer surface of the tube wall (21) of the evaporation tube (20) is covered with a corrosion-resisting layer (22) which is formed into a composite layer with the tube wall (21), and the corrosion-resisting layer (22) is thermoplastic plastic or hot-melt adhesive. The beneficial effects of the corrosion-resisting evaporator for refrigerator are that the serious defect that refrigerant is leaked due to the perforation of the tube wall caused by the corrosion of the outer surface of the evaporation tube is eliminated completely, and the connection strength between the evaporation tube and the heat exchanger plate is raised; the corrosion-resisting evaporator for refrigerator has simple technology, energy saving, high production rate and no pollution; manufacturing cycle is shortened, cost is reduced, and quality is raised.
Description
Technical field
The utility model relates to a kind of refrigeration plant evaporimeter, relates in particular to the bonding evaporimeter of tube sheet in the derect refrigerated refrigerator.
Background technology
In derect refrigerated refrigerator, evaporimeter is the parts of cold-producing medium evaporation, heat absorption, refrigeration, multiple version is arranged, one of them is the tube sheet bonded structure, promptly by a heat transfer plate that is processed into thin aluminum sheet and the evaporation tube that is processed into metal circular tube, by laying or be compounded in bonding the forming of hot melt adhesive film on the heat transfer plate.
Heat transfer plate in the bonding evaporimeter of tube sheet generally is a tabular, and many employings process with the aluminium plate of 0.4～0.5 millimeters thick.Evaporation tube bends to snakelike or other shape for bonding section, and pipe is extruded bonding plane, as flattening or be pressed into " D " shape.It is 10～6 millimeters that evaporation tube adopts external diameter, and wall thickness is that 1～0.5 millimeter aluminum pipe, copper pipe or galvanized welded pipe processes.
Facts have proved because the copper corrosion resistance is better, no matter whether the copper evaporation tube carry out Passivation Treatment, the less of corrosion failure taken place, but because of copper evaporation tube cost is too high, use amount is fewer and feweri in refrigerator.The galvanized welded pipe evaporation tube is to occur as the substitute of copper pipe; purpose is to reduce the cost of evaporimeter; though its outer surface has the zinc coat protection; but because the zinc layer is thin soft; the surface has damage in the processing, plain steel multiple reason such as very easily be corroded, and its corrosion resistance is unsatisfactory; cost also is higher than the aluminum evaporation pipe, and use amount seldom at present.Aluminum evaporation Guan Yinqi cost is low, so use amount is increasing, but aluminum evaporation pipe corrosion resistance is relatively poor, causes the situation that refrigerator can't freeze to take place often because of corrosion causes pipe perforation.
The corrosion resistance of evaporation tube has influenced the quality and the service life of refrigerator largely.In refrigerator; because evaporation tube is positioned at the foaming layer of refrigerator; the gas that generates in atmosphere, foaming raw material, the foaming process, food and juice thereof, condensed water---constituted the medium of corrosion evaporation tube outer surface; evaporation tube is as no excellent protection layer; the evaporation tube outer surface constantly will be corroded; develop into the tube wall perforation at last, cold-producing medium leaks in a large number, the catastrophe failure that causes refrigerator to freeze.Because of evaporation tube is positioned at the foaming layer of refrigerator, once perforation just forms so-called " interior leakage ", it will be very difficult repairing.
At present, the method that improves the corrosion resistance of aluminum evaporation pipe has, the aluminum evaporation pipe exposed face that is bonded on the heat transfer plate is adopted japanning, plastic-blasting, stickup plastics pressure-sensitive tape etc., owing to can not provide anticorrosion for the whole outer annular surface of evaporation tube tube wall, so it is limited to improve the effect of aluminum evaporation pipe corrosion resistance, and corresponding technology is very numerous and diverse, and quality is wayward, and production cost also can increase a lot.For guaranteeing adhesive force of coatings and tube sheet adhesive strength, to carry out surface treatment to copper evaporation tube, the effective acid of aluminum evaporation, alkali, salting liquid before tube sheet is bonding, this not only will dispose of sewage, and chemical solution might enter the tube inner corrosion pipeline, and the cleanliness factor in the influence pipe.The existence of surface treatment procedure, energy consumption and man-hour that evaporimeter is made strengthen, the cycle lengthening, cost rises, and threatens the quality and the contaminated environment of product.
The utility model content
In order to overcome the deficiency of the existing bonding evaporimeter corrosion-resistant of tube sheet, technical problem underlying to be solved in the utility model provides a kind of evaporation tube and has very strong corrosion resistant performance evaporimeter, and it also has, and tube sheet bonding strength height, technology are simple, non-environmental-pollution when making, characteristics with low cost.
The technical scheme that its technical problem that solves the utility model adopts is: the corrosion-resistant evaporimeter of refrigerator of the present utility model, comprise heat transfer plate and the evaporation tube that is connected with the heat transfer plate surface, it is characterized in that: be coated with the anticorrosive coat that forms composite bed with tube wall on the whole outer annular surface of described evaporation tube tube wall.
In the above-mentioned evaporimeter, described anticorrosive coat is thermoplastic or PUR.The thickness of anticorrosive coat generally can be selected in 0.1～0.3 millimeter scope, in this thickness range, anticorrosive coat can be one deck thermoplastic or one deck PUR, also can be the multi-layer thermoplastic plastics, can also be the compound of one deck PUR and one or more layers thermoplastic, under in the end a kind of situation, PUR should be positioned at the outermost layer of anticorrosive coat.Described PUR has certain adhesive property to heat transfer plate, evaporation tube base material and thermoplastic, as when heat transfer plate, evaporation tube are base material with aluminium, can adopt the PUR made from ethene and beta-unsaturated esters analog copolymer.
In the above-mentioned evaporimeter; owing on the whole outer annular surface of evaporation tube tube wall, be coated with the anticorrosive coat that forms composite bed with tube wall; event can be protected evaporation tube metal base outer surface not to be corroded and damage, and has thoroughly eliminated because of the corrosion of evaporation tube outer surface causes tube wall perforation cold-producing medium to leak this major defect.Evaporation tube can with hot melt adhesive film is arranged or does not have the metal heat transfer plate thermosol of hot melt adhesive film bonding, a bit of composite bed at its two ends can be peeled off so that be connected with other pipelines from the metal base tube outer surface.
In the above-mentioned evaporimeter, described evaporation tube can be connected with heat transfer plate by three kinds of such modes usually: one, described anticorrosive coat or its outermost layer are PUR, and described evaporation tube is bonding by PUR and described heat transfer plate; Two, described heat transfer plate upper berth, surface is if be compounded with the adhesive linkage that is formed by PUR, and described anticorrosive coat is a thermoplastic, and described evaporation tube is bonding by the PUR and the described heat transfer plate surface of formation adhesive linkage; Three, described anticorrosive coat or its outermost layer are PUR, and described heat transfer plate upper berth, surface is if be compounded with the adhesive linkage that is formed by PUR, and it is bonding that described evaporation tube passes through the PUR and the described heat transfer plate of the PUR on it, described adhesive linkage.
The utlity model has following beneficial effect: 1. the evaporation tube in the utility model evaporimeter is metal base and the compound multiple tube of anticorrosive coat, the thermoplastic or the PUR that constitute anticorrosive coat have protected the outer surface of metal base pipe not damage, do not corrode, thoroughly eliminated because of the corrosion of evaporation tube outer surface causes tube wall and bored a hole, cold-producing medium leaks, refrigerator this critical defect of can't working; 2. behind evaporation tube and the heat transfer plate hot melt adhesion, its tube sheet is connected to fixing (is that also will adding of PUR is bonding for the evaporation tube outer layer plastic) of evaporation tube thermoplastic, so the bonding strength of evaporation tube and heat transfer plate is improved, in the place of evaporation tube turnover heat transfer plate plate face, no longer need to take other measure to reinforce.3. make the base material pipe with continuously extruded metal tube, make metal and the compound pipe of plastics by the extrusion molding combination process, again and then the anticorrosion evaporation tube in the processing cost utility model---whole process, technology is simple, energy savings, the productivity ratio height, pollution-free, not only cancelled chemical oxidation treatment, and all multiple operation that carry out for anticorrosion to evaporation tube, and shortened manufacturing cycle of evaporimeter, and reduced cost, improved quality.
Description of drawings
This specification comprises following three width of cloth accompanying drawings:
Fig. 1 is the vertical view (part) of the utility model refrigeration plant evaporimeter;
Fig. 2 is the cutaway view (amplification) of the utility model refrigeration plant evaporimeter embodiment 1 along A-A line among Fig. 1;
Fig. 3 is the cutaway view (amplification) of the utility model refrigeration plant evaporimeter embodiment 2 along A-A line among Fig. 1.
Parts, position and numbering among the figure: heat transfer plate 10, adhesive linkage 11, evaporation tube 20, tube wall 21, anticorrosive coat 22.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the corrosion-resistant evaporimeter of refrigerator of the present utility model comprises heat transfer plate 10 and the evaporation tube 20 that is connected with heat transfer plate 10 surfaces, is coated with the anticorrosive coat 22 that forms composite bed with tube wall 21 on the whole outer annular surface of the tube wall 21 of evaporation tube 20.
Evaporation tube 20 is made the base material pipe with metal tube, and anticorrosive coat 22 preferably is covered on the whole outer annular surface of tube wall 21 by the extrusion molding combination process.Evaporation tube 20 after compound aborning forms through multiple working procedure manufacturings such as alignment, bending, cut-out, flattenings, and bonding bonding section of itself and heat transfer plate 10 bends to snakelike or other shape, and extrudes bonding plane.On heat transfer plate 10, also can lay or the compound adhesive linkage 11 that forms by PUR with certain adhesive property.
The import and export of evaporation tube 20, sometimes want connecting pipe, perhaps to link to each other, at this moment need the anticorrosive coat 22 in the evaporation tube 20 both ends certain-lengths is peelled off, connect so that required cold deformation processing and welding or lock ring are carried out in the end with the pipeline of refrigeration system of refrigerator.The length of peelling off is decided in 100 millimeters scopes as the case may be.The strippable property of anticorrosive coat 22 is realized when making composite evaporation pipe 20, when anticorrosive coat 22 is PUR, can controls the temperature of evaporation tube 20 or take other measure to realize at the extrusion molding compound working procedure; As anticorrosive coat 22 are thermoplastics, and then strippable property guarantees naturally.The anticorrosion of the two ends of compound back evaporation tube 20 and the connecting portion of pipeline, the heat-shrinkable tube of available japanning or suit band PUR solves.
According to the requirement of refrigerator, the size and the shape of composite evaporation pipe 20 and heat transfer plate 10 are diversified, and bonding composite evaporation pipe 20 also may more than one on the heat transfer plate 10.Heat transfer plate 10 is generally flat board, and the bonding evaporimeter of the tube sheet of making like this is flat, can make the built-in evaporimeter of refrigerator; Also it can be bent into the shape of designing requirement, and assemble a chamber,, and become exposed evaporimeter as refrigerating chamber for refrigerator with replacing the spare parts mutually.
The difference of the material that is adopted according to anticorrosive coat 22, evaporation tube 20 can adopt three kinds of such modes to be connected with heat transfer plate 10, thereby forms three comparatively typical embodiment of the present utility model:
(embodiment 1) evaporation tube 20, heat transfer plate 10 all adopt aluminium matter base material.As shown in Figure 3, be coated with the anticorrosive coat 22 that forms composite bed with tube wall 21 on the whole outer annular surface of evaporation tube 20 tube walls 21, anticorrosive coat 22 is one deck PUR, and evaporation tube 20 is bonding by this layer PUR and heat transfer plate 10.
(embodiment 2) evaporation tube 20, heat transfer plate 10 all adopt aluminium matter base material.As shown in Figure 2, be coated with the anticorrosive coat 22 that forms composite bed with tube wall 21 on the whole outer annular surface of evaporation tube 20 tube walls 21, anticorrosive coat 22 is one deck thermoplastic, be equipped with the adhesive linkage 11 that is formed by PUR on heat transfer plate 10 surfaces, evaporation tube 20 is bonding by the PUR and heat transfer plate 10 surfaces that form adhesive linkage 11.
(embodiment 3) evaporation tube 20, heat transfer plate 10 all adopt aluminium matter base material.As shown in Figure 3, be coated with the anticorrosive coat 22 that forms composite bed with tube wall 21 on the whole outer annular surface of evaporation tube 20 tube walls 21, anticorrosive coat 22 is one deck PUR, be equipped with the adhesive linkage 11 that is formed by PUR on heat transfer plate 10 surfaces, evaporation tube 20 is bonding by the PUR on it, the PUR that forms adhesive linkage 11 and heat transfer plate 10 surfaces.
It is pointed out that the top described specific embodiment and embodiment are accompanying drawings principles more of the present utility model, because the those of ordinary skill in constructed field is easy to carry out on this basis some modifications and change.Therefore, this specification be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (6)
1, the corrosion-resistant evaporimeter of a kind of refrigerator, comprise heat transfer plate (10) and the evaporation tube (20) that is connected with heat transfer plate (10) surface, it is characterized in that: be coated with the anticorrosive coat (22) that forms composite bed with tube wall (21) on the whole outer annular surface of described evaporation tube (20) tube wall (21).
2, the corrosion-resistant evaporimeter of refrigerator according to claim 1 is characterized in that: described anticorrosive coat (22) is thermoplastic or PUR.
3, the corrosion-resistant evaporimeter of refrigerator according to claim 1 and 2 is characterized in that: described anticorrosive coat (22) is a PUR, and described evaporation tube (20) is bonding by the PUR and the described heat transfer plate (10) that form anticorrosive coat (22).
4, the corrosion-resistant evaporimeter of refrigerator according to claim 1 is characterized in that: the surperficial upper berth of described heat transfer plate (10) is if be compounded with the adhesive linkage (11) that is formed by PUR.
5, according to claim 1, the corrosion-resistant evaporimeter of 2 or 4 described refrigerators, it is characterized in that: described anticorrosive coat (22) is a thermoplastic, and described evaporation tube (20) is bonding by the PUR and described heat transfer plate (10) surface that form adhesive linkage (11).
6, according to claim 1, the corrosion-resistant evaporimeter of 2 or 4 described refrigerators, it is characterized in that: described anticorrosive coat (22) is a PUR, and described evaporation tube (20) is bonding by the PUR that forms anticorrosive coat (22), the PUR that forms adhesive linkage (11) and described heat transfer plate (10) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034126 CN2711681Y (en) | 2004-06-21 | 2004-06-21 | Corrosion-resisting evaporator for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034126 CN2711681Y (en) | 2004-06-21 | 2004-06-21 | Corrosion-resisting evaporator for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711681Y true CN2711681Y (en) | 2005-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420034126 Expired - Fee Related CN2711681Y (en) | 2004-06-21 | 2004-06-21 | Corrosion-resisting evaporator for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711681Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620486A (en) * | 2011-01-21 | 2012-08-01 | Bsh博世和西门子家用电器有限公司 | Cooler and method for producing same |
| CN102278838B (en) * | 2011-08-17 | 2016-08-31 | 海尔集团公司 | Tube-in-sheet evaporator and refrigerator |
| CN106016849A (en) * | 2016-07-15 | 2016-10-12 | 合肥美菱股份有限公司 | Tube plate welding type refrigeration evaporator |
| CN105371687B (en) * | 2015-10-27 | 2017-07-11 | 珠海格力电器股份有限公司 | Heat exchange assembly, heat exchanger and refrigerating system |
| DE102017204738A1 (en) | 2017-03-21 | 2018-09-27 | BSH Hausgeräte GmbH | Heat exchanger and thus equipped refrigeration device |
| CN113669980A (en) * | 2021-08-27 | 2021-11-19 | 河南新科隆电器有限公司 | Refrigerator and manufacturing method thereof |
-
2004
- 2004-06-21 CN CN 200420034126 patent/CN2711681Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620486A (en) * | 2011-01-21 | 2012-08-01 | Bsh博世和西门子家用电器有限公司 | Cooler and method for producing same |
| CN102278838B (en) * | 2011-08-17 | 2016-08-31 | 海尔集团公司 | Tube-in-sheet evaporator and refrigerator |
| CN105371687B (en) * | 2015-10-27 | 2017-07-11 | 珠海格力电器股份有限公司 | Heat exchange assembly, heat exchanger and refrigerating system |
| CN106016849A (en) * | 2016-07-15 | 2016-10-12 | 合肥美菱股份有限公司 | Tube plate welding type refrigeration evaporator |
| DE102017204738A1 (en) | 2017-03-21 | 2018-09-27 | BSH Hausgeräte GmbH | Heat exchanger and thus equipped refrigeration device |
| WO2018172084A1 (en) | 2017-03-21 | 2018-09-27 | BSH Hausgeräte GmbH | Heat exchanger, and refrigeration appliance equipped therewith |
| CN113669980A (en) * | 2021-08-27 | 2021-11-19 | 河南新科隆电器有限公司 | Refrigerator and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN HONGJING INVESTMENT CO., LTD. Free format text: FORMER OWNER: MA SHOUZHI; PATENTEE Effective date: 20070126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070126 Address after: 610041, room 0710, B, Sichuan high speed building, 90 west section of two ring road, Chengdu, Sichuan, Wuhou District, China Patentee after: Sichuan Hongjing Investment Co. Ltd. Address before: Cross road 610000 Sichuan city of Chengdu province Chenghua District Shuanglin 8 No. 11 building 7 unit 11 Co-patentee before: Mao Weiyou Patentee before: Ma Shouzhi Co-patentee before: Zou Mingguo |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050720 Termination date: 20120621 |