CN203976914U - Aluminum pipe heat exchanger and heat-exchange equipment - Google Patents
Aluminum pipe heat exchanger and heat-exchange equipment Download PDFInfo
- Publication number
- CN203976914U CN203976914U CN201420119991.0U CN201420119991U CN203976914U CN 203976914 U CN203976914 U CN 203976914U CN 201420119991 U CN201420119991 U CN 201420119991U CN 203976914 U CN203976914 U CN 203976914U
- Authority
- CN
- China
- Prior art keywords
- heat
- heat exchanger
- transfer pipe
- pipe
- aluminum pipe
- 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 - Lifetime
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- 238000012546 transfer Methods 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 25
- 229910018104 Ni-P Inorganic materials 0.000 claims abstract description 16
- 229910018536 Ni—P Inorganic materials 0.000 claims abstract description 16
- 238000007747 plating Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000003245 working effect Effects 0.000 abstract description 4
- 238000000137 annealing Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000006356 dehydrogenation reaction Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- -1 nitrite anions Chemical class 0.000 description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical class CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 2
- 229910000635 Spelter Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Inorganic materials [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940045641 monobasic sodium phosphate Drugs 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 229940038773 trisodium citrate Drugs 0.000 description 1
Abstract
The utility model discloses a kind of aluminum pipe heat exchanger, comprise the aluminous fin of aluminium matter heat-transfer pipe and the coated heat-transfer pipe of part, its key is, described heat-transfer pipe outside surface is coated with take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive; Described heat-transfer pipe separately scribbles inhibiter coating or corrosion protection coating without the coated exposed position of aluminous fin.The utility model also provides a kind of heat-exchange equipment with above-mentioned aluminum pipe heat exchanger.The utility model can improve the corrosion resistance nature of heat-transfer pipe, extends the work-ing life of condensing heat exchanger.
Description
Technical field
The utility model relates to aluminum pipe heat exchanger technical field, more particularly, relates to a kind of aluminum pipe heat exchanger and heat-exchange equipment.
Background technology
As everyone knows, aluminium has good thermal conductivity and ductility, and extruding and tensile property are very good, and the pipe that inside and outside being easy to prepare, inned coefficient is high, rifled tube, straight-tooth pipe, oval tube etc. make facility compact, lightweight, volume is little; And with respect to copper alloy, with low cost and price volalility is very little, therefore the interchanger of cooled use is widely used.
The aluminum pipe heat exchanger of off-premises station or condenser in outdoor environment, due to diversity and the abominable of outdoor environment, is therefore had relatively high expectations to its surface corrosion-resistant erosion property for a long time.The for example high temperature difference and the CO in atmosphere
x, NO
x, SO
xetc. part objectionable impurities, all aluminum pipe heat exchanger is had to strong directly etching effect and molten corrosive nature.In addition, steam coagulation has dissolved the part obnoxious flavour in environment, formation contains the corrosive fluid that nitrate radical, nitrite anions, chlorate anions, sulfate radical, inferior sulfate radical, chlorion etc. have strong acid strong oxidizing property, also can cause corrosion to the aluminum pipe heat exchanger surface of off-premises station or condenser.For window machine condenser, lower part of condenser is steeped in water especially, and whole condenser was fetched water and forced coolingly in when heat radiation, and water quality is uncontrolled, and these have strengthened the erosion resistance difficulty of interchanger greatly, affect the life-span of interchanger.Meanwhile, condensing heat exchanger also claimed structure is compact, and volume is little, lightweight, convenient for production, with low cost.Therefore condensing heat exchanger is anticorrosion becomes with its interchanger strengthening the key problem in technology of developing condenser window machine, dehumidifier, mobile air conditioner, split air conditioner.
Aluminum pipe method of inhibiting corrosion has a variety of, and prior art comprises carries out the isolated processing in surface or manufactures sacrificial anode effect.Isolated processing has the methods such as inorganic coating or organic coating; Sacrificial anode has spray zinc, zinc-plated, the methods such as zincizing.Spray zinc, zincizing, coating are processed aluminium matter condensing heat exchanger at middle low temperature, middle low humidity, under noncorrosive gases, there is very much effect, but under the severe rugged environments such as high temperature, high humidity and corrosive gases, because it will cause the quick attenuate of aluminum pipe wall thickness using aluminum tube surfaces as sacrificial anode, the aluminum alloy heat exchanger that this is not high to compressive strength, its security as condensation side heat exchanger system will be had a greatly reduced quality greatly.The surface quick corrosion of spray zinc layer also can increase the thermal resistance that pipe wing rushes expanded joint head greatly, accelerates the decay of aluminum heat exchanger heat exchange property.And spray zinc and surface integral formula carry out passivation or electrophoresis by complex acid salt and spray paint to process and all can cause cost obviously to increase, poisonous Cr ion residues or raffinate can have and pollute or volatile VOC discharge water, all environment are had to obvious injurious effects.
Utility model content
One of the purpose of this utility model is to provide a kind of aluminum pipe heat exchanger, is intended to improve the Corrosion Protection as the aluminum pipe heat exchanger of condenser.
For technical solution problem, the utility model provides a kind of aluminum pipe heat exchanger, the aluminous fin that comprises aluminium matter heat-transfer pipe and the coated heat-transfer pipe of part, its key is, described heat-transfer pipe outside surface is coated with take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive; Described heat-transfer pipe separately scribbles inhibiter coating or corrosion protection coating without the coated exposed position of aluminous fin.
Preferably, the material of described heat-transfer pipe and aluminous fin is alumal, describedly take its thickness of Amorphous Ni-P Alloy chemical composite plating that molybdate is additive and is 15～40 microns.
Preferably, described heat-transfer pipe comprises pipe, rifled tube, oval tube or straight-tooth pipe.
Preferably, described fin comprises plain film, bridge sheet, beading, sheet or vortex distributing fin crack.
The utility model also provides a kind of heat-exchange equipment, it comprises aluminum pipe heat exchanger, this aluminum pipe heat exchanger comprises the aluminous fin of aluminium matter heat-transfer pipe and the coated heat-transfer pipe of part, and its key is, described heat-transfer pipe outside surface is coated with take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive; Described heat-transfer pipe separately scribbles inhibiter coating or corrosion protection coating without the coated exposed position of aluminous fin.
Preferably, aforementioned heat-exchange equipment is window-mounted air conditioner, split air conditioner air-conditioning, dehumidifier or mobile air conditioner.
The utility model is by take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive at the surface forming of heat-transfer pipe, compared with prior art, have the following advantages and effect: plated film compactness is good, evenly, smooth, improved the erosion resistance of aluminum pipe heat exchanger to outdoor environment and phlegma; And one deck inhibiter or other corrosion-resistant finishess are brushed in the exposed position at heat-transfer pipe, further promoted the corrosion resistance nature of heat-transfer pipe, extended the work-ing life of condensing heat exchanger, meet window machine, split air conditioner, the condensation side environment for use that dehumidifier and mobile air conditioner etc. are actual severe, has further promoted the application of aluminium on interchanger.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of aluminum pipe heat exchanger in the utility model one embodiment;
Fig. 2 is the local enlarged diagram at A place in Fig. 1.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
See figures.1.and.2, Fig. 1 is the one-piece construction figure of aluminum pipe heat exchanger in the utility model one embodiment; Fig. 2 is the local enlarged diagram at A place in Fig. 1.The utility model embodiment provides a kind of aluminum pipe heat exchanger, and this aluminum pipe heat exchanger comprises the aluminous fin 2 of aluminium matter heat-transfer pipe 1 and the coated heat-transfer pipe of part.At heat-transfer pipe 1 outside surface, be coated with and take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive; Described heat-transfer pipe 1 separately scribbles inhibiter coating or corrosion protection coating 3 without aluminous fin 2 coated exposed positions.
In the utility model embodiment, can determine thickness of coating according to the corrosion-resistant time limit to product requirement, according to required thickness of coating, determine the electroless plating time again, thereby be prepared into the anticorrosion condensing heat exchanger with Amorphous Ni-P Alloy chemical composite plating, for example, the corrosion test in ISO9223C4(artificial environment--salt-fog test) in situation, if require the corrosion-resistant time limit of coating to be about 5～6 years, it is 20 microns that thickness of coating can be set; If require the corrosion-resistant time limit to be about 10 years, it is 40 microns that thickness of coating can be set.Dehumidifier, the condensation side aluminum heat exchangers such as mobile air conditioner, can meet corrosion life requirement while using coat-thickness to be 20 microns, and window machine, the condensation side aluminum heat exchangers such as split air conditioner, could meet corrosion life requirement while using coat-thickness to be 40 microns.
In the utility model one preferred embodiment, the material of heat-transfer pipe 1 and aluminous fin 2 is preferably alumal (being aluminium alloy of aluminium alloy 3003,3005,3103 etc. such as the common GB trade mark), and its thickness of Amorphous Ni-P Alloy chemical composite plating that the molybdate of take is additive is 15～40 microns.Heat-transfer pipe 1 can be pipe, rifled tube, oval tube or straight-tooth pipe; Fin 2 can be for plain film, bridge sheet, beading, sheet or vortex distributing fin crack.Can aluminium alloy 3003 be base material, be processed into respectively the heat-transfer pipe of the shapes such as aluminous fin 2 and rifled tube, pipe, oval tube or straight-tooth pipe, then heat-transfer pipe 1 surface is carried out carrying out electroless plating after oil removing again, obtain the aforementioned Amorphous Ni-P Alloy chemical composite plating that molybdate is additive of take.Chemical Ni-P plating is a kind of protection against corrosion surface treatment method, but on the interchanger such as refrigeration air-conditioner and be of little use.Because this amorphous alloy as rich hydrogen of pure chemistry plating Ni-P alloy coating, although corrosion resistance nature, rub resistance is very excellent, but its plated film is poor to matrix adhesive force, fragility is very large, cannot meet the bend pipe of aluminum heat exchanger, the application request of the contour plastic deformation of expand tube, in order to meet practical application, the aluminum pipe of Ni-P coating conventionally need to carry out anneal and carry out dehydrogenation and crystallization; The annealing temperature of General N i-P coating is unsuitable too high, be generally below 400 degree, and 3 be alumal high-temperature reply and recrystallization temperature conventionally 450 degrees Celsius and more than, if adopt two cover thermal treatment process will roll up tooling cost.Therefore need to adjust Ni-P plating formula and two thermal treatment process are merged into one, thereby meeting integrated artistic requirement.In the utility model one embodiment, select following formula: single nickel salt: 40～57g/L; SODIUM PHOSPHATE, MONOBASIC: 20～30g/L; Trisodium Citrate: 35～45g/L; Ammonium acetate: 30～40g/L; Neutral ammonium fluoride: 1～2g/L; Sodium orthomolybdate: 1～5mg/L; Its pH value of plating solution that includes above component is 7～9; Coating film thickness is 15～40 microns.Then heat-transfer pipe 1 is carried out to online clean and online anneal, annealing temperature is 380～550 degrees Celsius; Overlay coating annealing dehydrogenation and recrystallization annealing are processed and are merged into a step, in a processing step, complete overlay coating annealing dehydrogenation and recrystallization annealing and process, to save cost.
After annealing dehydrogenation and recrystallization annealing are finished dealing with, to be with coated heat-transfer pipe 1 and fin 2 to carry out punching press, bend pipe, wear the processing such as sheet and expanded joint, fin 2 and heat-transfer pipe 1 are linked together, and then inhibition dip-coating processing is carried out at the exposed position of the heat-transfer pipe 1 that non-finned 2 is covered and inorganic zinc coating is brushed processing.Preferably, the composition of inhibiter is: mixing solutions or the sodium dodecyl sulfate solution of KORANTIN SH and octadecylammonium salt and sodium hydroxide; Described corrosion protection coating is spelter coating.For example KORANTIN SH and octadecylammonium salt 0.2～20ml/L thereof and sodium hydroxide 0.2～1g/L mixing solutions, any one of sodium laurylsulfonate 0.1～2g/L solution and aqueous inorganic spelter coating.
The utility model is by take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive at the surface forming of heat-transfer pipe 1, compared with prior art, have the following advantages and effect: plated film compactness is good, fine and close, even, smooth, improved the erosion resistance of aluminum pipe heat exchanger to outdoor environment and phlegma; And one deck inhibiter or other corrosion-resistant finishess 3 are brushed in the exposed position at heat-transfer pipe 1, further promoted the corrosion resistance nature of heat-transfer pipe 1, extended the work-ing life of condensing heat exchanger, meet window machine, split air conditioner, the condensation side environment for use that dehumidifier and mobile air conditioner etc. are actual severe, has further promoted the application of aluminium on interchanger.
The utility model also provides a kind of heat-exchange equipment, and this heat-exchange equipment comprises aforementioned aluminum pipe heat exchanger, and it can be window-mounted air conditioner, split air conditioner air-conditioning, dehumidifier or mobile air conditioner.Owing to having aforementioned aluminum pipe heat exchanger, the heat-exchange equipment in the utility model embodiment, owing to having aforementioned aluminum pipe heat exchanger, has promoted the corrosion resistance nature of heat-transfer pipe, has extended the work-ing life of heat-exchange equipment.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. an aluminum pipe heat exchanger, comprises and it is characterized in that the aluminous fin of aluminium matter heat-transfer pipe and the coated heat-transfer pipe of part, and described heat-transfer pipe outside surface is coated with take the Amorphous Ni-P Alloy chemical composite plating that molybdate is additive; Described heat-transfer pipe separately scribbles inhibiter coating or corrosion protection coating without the coated exposed position of aluminous fin.
2. aluminum pipe heat exchanger as claimed in claim 1, is characterized in that, the material of described heat-transfer pipe and aluminous fin is alumal, describedly take its thickness of Amorphous Ni-P Alloy chemical composite plating that molybdate is additive and is 15～40 microns.
3. aluminum pipe heat exchanger as claimed in claim 1, is characterized in that, described heat-transfer pipe comprises pipe, rifled tube, oval tube or straight-tooth pipe.
4. aluminum pipe heat exchanger as claimed any one in claims 1 to 3, is characterized in that, described fin comprises plain film, bridge sheet, beading, sheet or vortex distributing fin crack.
5. a heat-exchange equipment, is characterized in that, comprises the aluminum pipe heat exchanger as described in any one in claim 1 to 4.
6. heat-exchange equipment as claimed in claim 5, is characterized in that, this heat-exchange equipment is window-mounted air conditioner, split air conditioner air-conditioning, dehumidifier or mobile air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119991.0U CN203976914U (en) | 2014-03-17 | 2014-03-17 | Aluminum pipe heat exchanger and heat-exchange equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119991.0U CN203976914U (en) | 2014-03-17 | 2014-03-17 | Aluminum pipe heat exchanger and heat-exchange equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203976914U true CN203976914U (en) | 2014-12-03 |
Family
ID=51974377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119991.0U Expired - Lifetime CN203976914U (en) | 2014-03-17 | 2014-03-17 | Aluminum pipe heat exchanger and heat-exchange equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203976914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882414A (en) * | 2014-03-17 | 2014-06-25 | 美的集团股份有限公司 | Aluminium-pipe heat exchanger and surface treatment method |
| CN108468718A (en) * | 2018-05-21 | 2018-08-31 | 邯郸市丛台区联东冶金机械配件厂 | A kind of Continuous Casting Rolls water-cooling bearing block |
-
2014
- 2014-03-17 CN CN201420119991.0U patent/CN203976914U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882414A (en) * | 2014-03-17 | 2014-06-25 | 美的集团股份有限公司 | Aluminium-pipe heat exchanger and surface treatment method |
| CN108468718A (en) * | 2018-05-21 | 2018-08-31 | 邯郸市丛台区联东冶金机械配件厂 | A kind of Continuous Casting Rolls water-cooling bearing block |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |
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| CX01 | Expiry of patent term |