CN201476625U - Micro-channel condenser - Google Patents
Micro-channel condenser Download PDFInfo
- Publication number
- CN201476625U CN201476625U CN2009203044133U CN200920304413U CN201476625U CN 201476625 U CN201476625 U CN 201476625U CN 2009203044133 U CN2009203044133 U CN 2009203044133U CN 200920304413 U CN200920304413 U CN 200920304413U CN 201476625 U CN201476625 U CN 201476625U
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- Prior art keywords
- collector
- flat tube
- fin
- tube
- micro
- 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
- 210000003205 muscle Anatomy 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/007—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a parallel flow condenser for a micro-channel, in particular to a parallel flow micro-channel condenser of high working pressure and high heat exchange efficiency, which uses coolants such as CO2, R410a, 407C, R22 and the like. The parallel flow micro-channel condenser comprises a left collecting tube, a right collecting tube, a plurality of flat tubes, baffles, end covers and side plates, wherein the left collecting tube and the right collecting tube are arranged in parallel, the flat tubes are arranged between the two collecting tubes and are communicated with the inner chambers of the collecting tubes, the baffles are inserted into the inner chambers of the collecting tubes and divides the collecting tubes into a plurality of chambers in sealing way, the end covers are arranged at the two ends of the collecting tubes and seal the collecting tubes, and the side plates are arranged on the upper side and the lower side of the flat tubes. An inlet tube and an outlet tube are arranged on the collecting tubes. The utility model is characterized in that fins distributed like a sinusoidal wave are arranged among the flat tubes, and fins are arranged between the flat tubes and the side plates.
Description
Technical field
The utility model relates to a kind of microchannel parallel-flow condenser, relates in particular to use CO
2, refrigerant such as R410a, 407C, R22 high workload pressure, the concurrent flow micro-channel condenser of high heat exchange efficiency.
Background technology
Micro-channel heat exchanger claims parallel-flow heat exchanger again, is a kind of refrigerant, cold-producing medium at the heat exchanger that flows in less than several millimeters passage along diameter, and this heat exchanger is widely used in air conditioning for automobiles at present.
Along with people's awareness of saving energy strengthens, the high efficient heat exchanging performance requirement of heat exchanging device is more and more higher, the factor that influences the heat exchanger heat exchange property is a lot, the structure that comprises fin, heat exchange tube structure, the spacing of fin and heat exchanger tube, the heat exchange material thickness, factors such as flow path designs all heat exchanging efficient have material impact.Design a kind of high-performance heat exchanger, tackle all influence factors and carry out analysis-by-synthesis, system simulation, thus obtain one group of optimal parameter combination, just can produce high-performance heat exchanger.Existing heat exchanger kind is more, and its characteristics are respectively arranged.
It as the application number of China a kind of parallel flow heat exchanger of 200610143844.7, have collector tube, be connected between the collector tube and the some flat tubes that are communicated with the collector tube inner chamber, the fin between flat tube and to be arranged on collector tube inner and with the airtight dividing plate that is divided into a plurality of chambers of collector tube, be connected with adapter on the collector tube, between at least two chambers of collector tube, be provided with the throttling arrangement that can change flow process number and each flow process flat tube number.This heat exchanger can be adjusted the proportion of composing of vapour-liquid binary states refrigeration working medium, thereby realizes the adjustment to the heat exchange operating mode of heat exchanger; Realize forward and reverse various flows dynamic characteristic when perhaps forming refrigerant mobile in this heat exchanger, thereby adapt to the application of this heat exchanger in heat pump, and it is tubular not relate to the fin structure and the heat exchange that influence heat exchange efficiency.
And for example Chinese patent application number is 200510101490.5 1 kinds and is used for freezing and the heat exchanger of air-conditioning equipment, include Tube Sheet of Heat Exchanger and be arranged on fin on the Tube Sheet of Heat Exchanger, its fin is packed in strip fin on the Tube Sheet of Heat Exchanger periphery for shape in the shape of a spiral, the present invention since adopt with strip fin in the shape of a spiral shape be packed in structure on the Tube Sheet of Heat Exchanger periphery, its heat transfer area is bigger, and heat exchange performance is better.
Just like Chinese patent application numbers 200410005085.9 a kind of heat exchanger is disclosed again, this heat exchanger passes through a plurality of flat tubes that the configuration approximate vertical is extended between lower header tank that approximate horizontal is arranged and upper header tank, between adjacent flat tube, has fin, the extension tube attached that will be positioned at the inflow cold-producing medium of lower header tank one end is provided with along its length, the extension tube attached that flows out cold-producing medium is set near the central authorities of upper header tank simultaneously, and has improved the shunting situation of cold-producing medium.This heat exchanger has good branch stream mode when it being used as the use of one of evaporimeter or condenser, can obtain enough heat exchange amounts, but not relate to the tubular structure of fin structure and heat exchange equally.
Summary of the invention
The purpose of this utility model is fin, the heat exchange tube structure that has condenser now in order to solve, the spacing of fin and heat exchanger tube, and the heat exchange material thickness, irrational problem such as flow path designs provides a kind of preferable parameter combinations that has, and can be used for CO
2, R410a, 407C, R22 refrigerant high workload pressure, the parallel flow condenser of high heat exchange efficiency.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of micro-channel condenser, the collector that comprises two parallel placements is left collector, right collector, be connected between two collectors and the some flat tubes that communicate with the collector inner chamber, be inserted in the collector inner chamber and the collector sealed separation become the dividing plate of a plurality of chambers, the end cap that is arranged on the collector two ends and collector is sealed, collector is provided with inlet tube and outlet, and the side plate that both sides are provided with about the flat tube, it is characterized in that being provided with between the described flat tube fin that is sinusoidal wave extension distribution, be provided with fin between flat tube and the side plate.
The tube pitch of described flat tube is 9～11mm, and flat tube thickness is 1.8～2.22mm, and the flat tube inner chamber is provided with some muscle, and some muscle are divided into some holes with the flat tube inner chamber.
As preferably, described flat tube is an aluminum pipe, and the wall thickness of flat tube is 0.38～0.43mm, and side thickness is 0.48～0.53mm, and muscle is thick to be 0.40～0.50mm.The wall thickness of flat tube, side thickness, muscle are thick too big, and the heat exchange amount is just relatively poor, and each wall thickness dimension is too little, and the flat tube voltage endurance capability is also with regard to variation.
As preferably, described fin height is 7.8～8.2mm, and fin width is 15.5～25.5mm, and the fin pitch of waves is 2.4mm～3.0mm.
As preferably, described collector external diameter is Φ 20 ± 1mm * 1.5 ± 0.2mm or Φ 26 ± 1mm * 1.9 ± 0.2mm or Φ 32 ± 2mm * 2.5 ± 0.3mm.These three kinds of specification best results.
As preferably, described collector is an aluminium-alloy pipe, and collector and flat tube junction are adopted and be welded to connect.
As preferably, described fin is an aluminium foil, has shutter on the fin, interconnects by welding between fin and the flat tube.
As preferably, described fin to the distance of collector less than 20mm.
Therefore, the utility model is a kind of reasonable in design, can effectively improve the heat exchange efficiency of heat exchanger unit are, can strengthen the voltage endurance capability of product simultaneously again, is applicable to R410a, CO
2The heat-exchange system of contour operating pressure working medium.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the local structure for amplifying schematic diagram of the utility model Fig. 1.
Fig. 3 is a kind of cross-sectional structure schematic diagram of the utility model flat tube.
Fig. 4 is the molding structure schematic diagram of the utility model fin.
Fig. 5 is the left view of the utility model Fig. 4.
Among the figure: 1. left collector, 2. flat tube, 201 muscle., 202. holes, 3. fin, 4. end cap, 5. right collector, 6. inlet tube, 7. dividing plate, 8. outlet, 9. side plate.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment one, referring to Fig. 1 and Fig. 2, this micro-channel condenser comprises the left collector 1 and the right collector 5 of two parallel placements, between two collectors, be provided with multilayer flat tube 2, flat tube 2 communicates with two collector inner chambers, is provided with to be the sinusoidal wave fin 3 that distributes that extends between flat tube 2, is inserted with dividing plate 7 at the inner chamber of two collectors, dividing plate 7 with two collectors respectively sealed separation become a plurality of chambers, promptly be divided into the working region of inlet tube and outlet.
Be respectively equipped with and on right collector 5, establish an inlet tube 6 and an outlet 8 to the end cap 4 of collector sealing at left and right collector two ends.
Flat tube is respectively equipped with side plate 9 in both sides about in the of 2, also is provided with fin 3 between flat tube 2 and the side plate 9.
Collector, flat tube 2 all are aluminum pipe, and fin 3 is an aluminium foil, interconnect by welding between collector and flat tube 2 junctions, fin 3 and the flat tube 2.
As Fig. 2, shown in Figure 4, the tube pitch of micro-channel condenser flat tube 2 is 10 ± 1mm, and the external diameter of two collectors is that Φ 20 ± 1mm, wall thickness are 1.5 ± 0.2mm, and the pitch of waves of fin 3 is 2.4mm, and fin height is 8.0 ± 0.2mm.The tube pitch of flat tube 2 is D among the figure, and the external diameter of collector is that L1, wall thickness are H1, and T is the pitch of waves of fin 3, and H is the height of fin.
Referring to Fig. 3, the thickness of flat tube 2 is made as 2 ± 0.1mm, and the flat tube width is 16 ± 0.2mm, is evenly equipped with muscle 201 in the inner chamber of flat tube, and muscle 201 is divided into 10 holes with flat tube 2 inner chambers.The wall thickness of flat tube 2 is 0.40mm, and side thickness is 0.48mm, and muscle 201 thickness are 0.40.H2 is the thickness of flat tube 2 among the figure, and L2 is the width of flat tube, and d1 is the wall thickness of flat tube 2, and d2 is the flat tube side thickness, and d3 is muscle 201 thickness,
As Fig. 4, shown in Figure 5, have shutter on the fin 3, can strengthen exchange capability of heat, the width L3 of fin 3 is 16 ± 0.2mm, and L is corresponding with the flat tube width, and the distance L 2 that fin 3 arrives collector is less than 20mm, and if L2 is too big, the exchange capability of heat of heat exchanger will reduce.
Embodiment two, and the structure of present embodiment is similar to embodiment 1, and difference is that external diameter, the wall thickness of collector are 26 ± 1mm * 1.9 ± 0.2mm, and the flat tube width is made as 20 ± 0.2mm, and the inner hole count of flat tube is 12, and the width of fin 3 also is made as 20 ± 0.2mm.
Embodiment three, and the structure of present embodiment is similar to embodiment 1, and difference is that external diameter, the wall thickness of collector are 32 ± 1mm * 2.5 ± 0.2mm, and the flat tube width is made as 25 ± 0.2mm, and the inner hole count of flat tube is 14, and the width of fin 3 also is made as 25 ± 0.2mm.
In like manner, hole count and fin 3 have other optimum size configuration in collector, flat tube 2, the flat tube.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any structure after the simple transformation of the present utility model is all belonged to protection domain of the present utility model.
Claims (7)
1. micro-channel condenser, the collector that comprises two parallel placements is left collector (1), right collector (5), the some flat tubes (2) that are connected between two collectors and communicate with the collector inner chamber, be inserted in the collector inner chamber and the collector sealed separation become the dividing plate (7) of a plurality of chambers, the end cap (4) that is arranged on the collector two ends and collector is sealed, collector is provided with inlet tube (6) and outlet (8), and the side plate (9) that both sides are provided with about the flat tube, it is characterized in that being provided with between the described flat tube (2) fin (3) that is sinusoidal wave extension distribution, be provided with fin between flat tube (2) and the side plate (9);
The tube pitch of described flat tube (2) is 9～11mm, and flat tube (2) thickness is 1.8～2.22mm, and flat tube (2) inner chamber is provided with some muscle (201), and some muscle (201) are divided into some holes (202) with the flat tube inner chamber.
2. micro-channel condenser according to claim 1 is characterized in that described flat tube (2) is an aluminum pipe, and the wall thickness of flat tube (2) is 0.38～0.43mm, and side thickness is 0.48～0.53mm, and muscle (201) is thick to be 0.40～0.50mm.
3. micro-channel condenser according to claim 1 is characterized in that described fin (3) highly is 7.8～8.2mm, and fin width is 15.5～25.5mm, and the fin pitch of waves is 2.4mm～3.0mm.
4. micro-channel condenser according to claim 1 is characterized in that described collector external diameter is Φ 20 ± 1mm * 1.5 ± 0.2mm or Φ 26 ± 1mm * 1.9 ± 0.2mm or Φ 32 ± 2mm * 2.5 ± 0.3mm.
5. micro-channel condenser according to claim 1 is characterized in that described collector is an aluminium-alloy pipe, and collector and flat tube (2) junction is adopted and is welded to connect.
6. micro-channel condenser according to claim 1 is characterized in that described fin (3) is an aluminium foil, has shutter on the fin, interconnects by welding between fin and the flat tube.
7. according to claim 1 or 3 or 6 described micro-channel condensers, it is characterized in that described fin (3) arrives the distance of collector less than 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203044133U CN201476625U (en) | 2009-06-15 | 2009-06-15 | Micro-channel condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203044133U CN201476625U (en) | 2009-06-15 | 2009-06-15 | Micro-channel condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476625U true CN201476625U (en) | 2010-05-19 |
Family
ID=42412873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203044133U Expired - Fee Related CN201476625U (en) | 2009-06-15 | 2009-06-15 | Micro-channel condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201476625U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975526A (en) * | 2010-11-18 | 2011-02-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchange tube and heat exchanger having the same |
| CN102278909A (en) * | 2011-05-20 | 2011-12-14 | 广东美的制冷设备有限公司 | Microchannel heat exchanger and manufacturing method thereof |
| CN102278906A (en) * | 2011-08-17 | 2011-12-14 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and flat pipe thereof |
| CN102278910A (en) * | 2011-05-20 | 2011-12-14 | 广东美的制冷设备有限公司 | Microchannel heat exchanger and manufacturing method thereof |
| CN102706040A (en) * | 2010-10-28 | 2012-10-03 | 三星电子株式会社 | Heat exchanger |
| CN105783345A (en) * | 2016-04-20 | 2016-07-20 | 重庆超力高科技股份有限公司 | Condenser |
| US20170045299A1 (en) * | 2014-04-29 | 2017-02-16 | Carrier Corporation | Improved heat exchanger |
| CN108072205A (en) * | 2016-11-08 | 2018-05-25 | 荏原冷热系统株式会社 | Absorber and absorption heat pump |
| CN110869690A (en) * | 2017-08-21 | 2020-03-06 | 株式会社Uacj | condenser |
| CN111561736A (en) * | 2020-04-29 | 2020-08-21 | 浙江易斐科技有限公司 | Embedded air conditioner and building provided with same |
-
2009
- 2009-06-15 CN CN2009203044133U patent/CN201476625U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706040A (en) * | 2010-10-28 | 2012-10-03 | 三星电子株式会社 | Heat exchanger |
| CN101975526A (en) * | 2010-11-18 | 2011-02-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchange tube and heat exchanger having the same |
| CN102278909A (en) * | 2011-05-20 | 2011-12-14 | 广东美的制冷设备有限公司 | Microchannel heat exchanger and manufacturing method thereof |
| CN102278910A (en) * | 2011-05-20 | 2011-12-14 | 广东美的制冷设备有限公司 | Microchannel heat exchanger and manufacturing method thereof |
| CN102278906A (en) * | 2011-08-17 | 2011-12-14 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and flat pipe thereof |
| CN102278906B (en) * | 2011-08-17 | 2013-05-08 | 三花控股集团有限公司 | Heat exchanger and flat pipe thereof |
| CN106461295A (en) * | 2014-04-29 | 2017-02-22 | 开利公司 | Improved heat exchanger |
| US20170045299A1 (en) * | 2014-04-29 | 2017-02-16 | Carrier Corporation | Improved heat exchanger |
| CN105783345A (en) * | 2016-04-20 | 2016-07-20 | 重庆超力高科技股份有限公司 | Condenser |
| CN108072205A (en) * | 2016-11-08 | 2018-05-25 | 荏原冷热系统株式会社 | Absorber and absorption heat pump |
| CN110869690A (en) * | 2017-08-21 | 2020-03-06 | 株式会社Uacj | condenser |
| CN110869690B (en) * | 2017-08-21 | 2021-06-15 | 株式会社Uacj | condenser |
| CN111561736A (en) * | 2020-04-29 | 2020-08-21 | 浙江易斐科技有限公司 | Embedded air conditioner and building provided with same |
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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: ZHEJIANG KANGSHENG HEAT EXCHANGER CO., LTD. Free format text: FORMER OWNER: ZHEJIANG KANGSHENG CO., LTD. Effective date: 20130812 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130812 Address after: Zhejiang province Chunan County town 311700 Kuril Kang Sheng Lu No. 268 Patentee after: Zhenjiang Kangsheng Heat Exchanger Co., Ltd. Address before: Zhejiang province Chunan County town 311700 Kuril Pingshan Industrial Park Patentee before: Zhejiang Kangsheng Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20180615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |