CN105115161B - Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger - Google Patents
Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger Download PDFInfo
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- CN105115161B CN105115161B CN201510668360.3A CN201510668360A CN105115161B CN 105115161 B CN105115161 B CN 105115161B CN 201510668360 A CN201510668360 A CN 201510668360A CN 105115161 B CN105115161 B CN 105115161B
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Abstract
The present invention relates to the anticorrosion press-bearing water tank built in a kind of heat exchanger and its processing method, including plastic inner container and the metal shell for being close to plastic inner container outer wall, heat exchanger is installed in plastic inner container, the plastic inner container is made up of separate plastics stack shell, plastics upper cover and plastics low head, and the heat exchange main body of heat exchanger is extended into plastics stack shell, the heat transferring medium air inlet pipe and heat transferring medium escape pipe of heat exchanger extend through low head；The metal shell is made up of independent mutually metal stack shell, metal upper cover and metal low head, metal stack shell is by being axially divided into the arc barrel of at least two equal portions and being close to Plastic Drum behind in a manner of interference, it will weld after seamed edge docking axially extending on arc barrel, then weld metal end enclosure with metal stack shell；Its processing method is welded by simple frock and sweat soldering and electric arc, you can the anticorrosion press-bearing water tank built in heat exchanger is made, built-in heat exchanger, anticorrosion, three important indicators of bearing capacity by force can be effectively ensured, and production cost is low.
Description
Technical field
The present invention relates to Teat pump boiler static state press-bearing water tank technical field, more particularly to band anticorrosive coat and heat exchange coil
Built-in press-bearing water tank and its processing method.
Background technology
At present, the water tank of Teat pump boiler, the particularly water storage liner in water tank outer cover, in order to realize anticorrosion work(
Can, one layer of plastic layer is set usually in metal shell, it is a kind of as disclosed in Chinese invention patent notification number CN2550695Y
The patent document of air-source water heater pressure-bearing water tank inner liner, and disclosed in Chinese invention patent notification number CN204421367U
The patent document of steel-plastic composite structure solar water heater tank inner container.
Patent document disclosed in two, it is to solve water tank Anticorrosion Problems by adhering to plastic layer in bearing shell,
But plastic layer must be all attached on outer casing inner wall by two kinds of prior arts by high temperature；Wherein notification number CN2550695Y documents
In clearly state the plastic layer and need to pass through rotational molding technique（That is enamel technology）It can just implement.This kind of technique needs complicated rotational moulding work
Dress（Clamping shell）With prolonged heating cooling procedure（Enamel pressure-bearing water tank, because that need to spray and high temperature curing process, make plus
Hot coil can not be built-in, can only be close to metal shell outer wall by heat exchange coil is external, cause heat exchange coil to be made because of area increase
Valency increase.The ceramic of the enamel layer formed simultaneously makes dilation feed-tank during water tank pressure-bearing bring anti-corrosion damage layer to cause water
Case leak）.
The inner bag that enamel/rotational moulding mode that above-mentioned patent uses supports, is that can not be placed into heat pump static state heating coil
Inside water tank, and " stainless steel platen " is utilized in CN204421367U patent document（It can be understood as ring flange）Structure solution
It is certainly to implement built in coil pipe, reason is：The inner water tank diameter of usual Teat pump boiler is in below 500mm, and wall thickness is in 2mm
Hereinafter, a diameter of more than 200mm of heat exchanger, so above-mentioned " stainless steel platen " is necessarily bigger than the diameter of heat exchanger, such as
Fruit is according to secondary condition, it is necessary to offer the perforation suitable for " stainless steel platen " installation connection on the low head of water tank（Diameter
More than 200mm）, the water tank for being provided with perforation installs " stainless steel platen " with heat exchanger again, its bearing capacity certainly exist compared with
Big decline, and sealing is also difficult to ensure that, the anticorrosion water tank of reliable pressure-bearing built-in heat exchanger can not be made.
The content of the invention
It is an object of the invention to solve above-mentioned the deficiencies in the prior art, and improve a kind of simple and reasonable for structure
A kind of anticorrosion press-bearing water tank built in heat exchanger, by modular combination, allows water tank to realize rapid, high volume
While production, built-in heat exchanger, anticorrosion, three important indicators of bearing capacity by force can be effectively ensured, and be produced into
This is low.
In addition, it is another object of the present invention to propose a kind of processing of the anticorrosion press-bearing water tank prepared built in heat exchanger
Method, this method due to possessing the premise of modular combination, so production and processing when, can be laggard by simple clamping
Quickly splicing, hot melt, electric arc welding etc. are conventional for row, and avoid enamel/rotational molding technique of the prior art such as and need spy
Implement under fixed frock and equipment and hot environment, the present invention passes through simple plastic injection or plastic uptake under the plant area of normal temperature
And metal stamping, the component of various needs can be completed, it is high in machining efficiency.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of anticorrosion press-bearing water tank built in heat exchanger, including plastic inner container and the metal for being close to plastic inner container outer wall
Shell, heat exchanger is installed in plastic inner container, it is characterized in that；
The plastic inner container is made up of separate plastics stack shell, plastics upper cover and plastics low head, plastic barrel
As the cylinder with plastics upper shed and plastics under shed, the opening of plastics upper cover is welded on plastics upper shed, is provided with
The plastics low head of heat exchanger is welded on plastics under shed by opening, and the heat exchange main body of heat exchanger extends into plastics stack shell
Interior, the heat transferring medium air inlet pipe and heat transferring medium escape pipe of heat exchanger extend through low head；
The metal shell is made up of independent mutually metal stack shell, metal upper cover and metal low head, metal cylinder
As the cylinder with metal upper shed and metal under shed, metal stack shell is divided into the arc of at least two equal portions by axial direction
Barrel is simultaneously close to plastic barrel behind in a manner of interference, will be welded after seamed edge docking axially extending on arc barrel, on metal
End socket is close to plastics upper cover in a manner of interference, and is welded on metal upper shed by opening, and metal low head is with interference side
Formula is close to plastics low head, and is welded on metal under shed, heat transferring medium air inlet pipe and heat transferring medium escape pipe by opening
Extend through metal low head.
The present invention can also use following technical measures to solve：
The opening of plastics upper cover is welded on plastics upper shed and forms upper plastic welded seam, and the opening of metal upper cover is welded on
Metal upper shed, metal welding seam in composition, upper metal welding seam and upper plastic welded seam form adjacent be close to.
The opening of plastics low head is welded on plastics under shed and forms lower plastic welded seam, and the opening of metal low head is welded on
Metal under shed, forms lower metal welding seam, and lower metal welding seam and lower plastic welded seam form adjacent be close to.
The plastics upper cover offers faucet, plastics low head water inlet tap, and faucet runs through metal upper cover, water inlet
Mouth runs through metal low head.
The heat transferring medium air inlet pipe is tightly connected with plastics low head and metal low head respectively by air inlet pipe joint
Coordinate, heat transferring medium escape pipe is tightly connected with plastics low head and metal low head respectively by outlet pipe joint to be coordinated.
The wall thickness of plastics stack shell, plastics upper cover and plastics low head is 1mm-10mm.
The wall thickness of metal stack shell, metal upper cover and metal low head is 1mm-3mm.
The present invention also provides a kind of processing method of the anticorrosion press-bearing water tank prepared built in heat exchanger, it is characterized in that, bag
Include following steps：
A, plastics stack shell, plastics upper cover are prepared respectively according to size, plastics low head, metal stack shell, is sealed on metal
Head and metal low head, wherein metal stack shell are divided into the arc barrel of two equal portions by axial direction, standby；
B, heat exchanger is connected to plastics low head first, by the opening of plastics upper cover and the plastics of plastics stack shell
Sweat soldering after open butt joint, be provided with heat exchanger the opening of plastics low head docked with the plastics under shed of plastics stack shell after
Sweat soldering, form the plastic inner container with built-in heat exchanger；
C, and then by two arc barrels it is close in a manner of interference with plastic barrel, then by arc barrel
Electric arc welds after axially extending seamed edge docking, and metal upper cover leads to after plastics upper cover is close in a manner of interference
Cross electric arc after opening is docked with the metal upper shed of metal stack shell to weld, metal low head is close under plastics in a manner of interference and sealed
Electric arc welds after being docked after head by opening with the metal under shed of metal stack shell, forms anticorrosion press-bearing water tank.
The beneficial effects of the invention are as follows：
（1）Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger of the present invention, the cooperation work of micro- interference
Skill is close to plastic inner container and metal shell, ensure that the pressure-bearing function of water tank, while avoids plastic layer attachment in the prior art
Shell needs energy consumption and the time of rotational molding technique heating and melting plastics, also eliminate rotational moulding necessary Three dimensional rotation frock machinery and
Huge heating storehouse.
（2）The present invention a kind of heat exchanger built in anticorrosion press-bearing water tank and its processing method, make in advance by
The plastic inner container that separate plastics stack shell, plastics upper cover and plastics low head forms so that heat exchange coil can be first
Before be put into plastic inner container, form it is built-in, make to become possibility built in real heat exchange coil, solve thin-walled water tank ring flange
Opening needed for installation is larger and causes pressure-bearing unreliable and the high problem of cost（Install complicated, time-consuming）.
（3）Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger of the present invention, are close to metal shell
Plastic layer and built-in heat exchange coil, solve the problems, such as that the external cost of enamel heat exchange coil is high and corrosion-resistant coating rapid wear.
（4）Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger of the present invention, all mouths of pipe（Heat exchange is situated between
Matter air inlet pipe, heat transferring medium escape pipe, water inlet tap, faucet and other feature bodys, such as thermometric blind pipe）It is tiny,
Pass through special joint, you can be attached through plastic inner container and metal shell, play sealing and antiseptic effect, solve ring flange
Perforate is larger and the problem of pressure-bearing can not be ensured.
Brief description of the drawings
Fig. 1 is the decomposition texture signal of plastics stack shell in the present invention, plastics upper cover, plastics low head and heat exchanger
Figure.
Fig. 2 is the structural representation after plastics stack shell in the present invention, plastics upper cover, plastics low head and Welding of Heat-exchanger
Figure.
Fig. 3 is the enlarged drawing at A in Fig. 2.
Fig. 4 is that metal stack shell in the present invention, metal upper cover and the decomposition texture of metal low head and plastic inner container show
It is intended to.
Fig. 5 is the structural representation for forming metal stack shell in the present invention after the arc barrel welding of two equal portions.
Fig. 6 is that the arc barrel of two equal portions in the present invention is close to plastic barrel and after welding, and is sealed on metal
Structural representation before head and the welding of metal low head.
Fig. 7 is the structural representation of the anticorrosion press-bearing water tank built in present invention heat exchanger.
Fig. 8 is the enlarged drawing at B in Fig. 7.
Fig. 9 is the enlarged drawing at C in Fig. 7.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figures 1 to 9, the anticorrosion press-bearing water tank built in a kind of heat exchanger, including plastic inner container 1 and it is close to modeling
Expect the metal shell 2 of the outer wall of inner bag 1, heat exchanger 3 is installed in plastic inner container 1, it is characterized in that；
The plastic inner container 1 is by 103 groups of separate plastics stack shell 101, plastics upper cover 102 and plastics low head
Into plastics stack shell 101 is the cylinder with plastics upper shed 101-1 and plastics under shed 101-2, and plastics upper cover 102 is opened
Mouth 102-1 is welded on plastics upper shed 101-1, and the plastics low head 103 for being provided with heat exchanger 3 is welded on by opening 103-1
Plastics under shed 101-2, and the heat exchange main body 301 of heat exchanger 3 is extended into plastics stack shell 101, the heat transferring medium of heat exchanger 3 enters
Tracheae 302 and heat transferring medium escape pipe 303 extend through low head 103；
The metal shell 2 is by independent mutually 203 groups of metal stack shell 201, metal upper cover 202 and metal low head
Into metal stack shell 201 is the cylinder with metal upper shed 201-1 and metal under shed 201-2, and metal stack shell 201 passes through axle
After being close to plastics stack shell 101 to the arc barrel 201-3 for being divided into two equal portions and in a manner of interference, by arc barrel 201-
Being welded on 3 after axially extending seamed edge 201-3a docking, metal upper cover 202 is close to plastics upper cover 102 in a manner of interference,
And metal upper shed 201-1 is welded on by opening 202-1, metal low head 203 is close to plastics low head in a manner of interference
103, and metal under shed 201-2, heat transferring medium air inlet pipe 302 and heat transferring medium escape pipe 303 are welded on by opening 203-1
Extend through metal low head 203.
More specific embodiment as the present embodiment：
The opening 102-1 of plastics upper cover 102 is welded on plastic welded seam 104 in plastics upper shed 101-1 compositions, on metal
The opening 202-1 of end socket 202 is welded on metal upper shed 201-1, metal welding seam 204, upper metal welding seam 204 and upper modeling in composition
Material weld seam 104 forms adjacent be close to.
The opening 103-1 of plastics low head 103 is welded on plastics under shed 101-2 and forms lower plastic welded seam 105, under metal
The opening 203-1 of end socket 203 is welded on metal under shed 201-2, forms lower metal welding seam 205, lower metal welding seam 205 and lower modeling
Material weld seam 105 forms adjacent be close to.
The plastics upper cover 102 offers faucet 4, and the water inlet tap 5 of plastics low head 103, faucet 5 is on metal
End socket 202, water inlet tap 5 run through metal low head 203.
The heat transferring medium air inlet pipe 302 by air inlet pipe joint 6 respectively with plastics low head 103 and metal low head
203 are tightly connected cooperation, and heat transferring medium escape pipe 303 is by outlet pipe joint 7 respectively with being sealed under plastics low head 103 and metal
First 203 are tightly connected cooperation.
The wall thickness of plastics stack shell 101, plastics upper cover 102 and plastics low head 103 is 1mm-10mm.
The wall thickness of metal stack shell 201, metal upper cover 202 and metal low head 203 is 1mm-3mm.
The present embodiment also provides a kind of processing method of the anticorrosion press-bearing water tank prepared built in heat exchanger, it is characterized in that,
Comprise the following steps：
A, plastics stack shell 101, plastics upper cover 102, plastics low head 103, metal stack shell are prepared respectively according to size
201st, metal upper cover 202 and metal low head 203, wherein metal stack shell 201 are divided into the arc of two equal portions by axial direction
Shape barrel 201-3, it is standby；
B, heat exchanger 3 is connected to plastics low head 103 first, passes through the opening 102-1 and plastics of plastics upper cover 102
Sweat soldering after the plastics upper shed 101-1 docking of stack shell 101, the opening 103- of the plastics low head 103 of heat exchanger 3 is installed
1 docked with the plastics under shed 101-2 of plastics stack shell 101 after sweat soldering, form with built-in heat exchanger 3 plastic inner container 1；
C, and then by two arc barrel 201-3 it is close in a manner of interference on plastics stack shell 101, then by arc
Electric arc welds after axially extending seamed edge 201-3a docking on barrel 201-3, and metal upper cover 202 is in a manner of interference
Arc welding after being docked by opening 202-1 with the metal upper shed 201-1 of metal stack shell 201 is close to after plastics upper cover 102
Connect, metal low head 203 is close to after plastics low head 103 in a manner of interference by opening 203-1 and the gold of metal stack shell 201
Electric arc welds after subordinate's opening 201-2 docking, finally constitutes anticorrosion press-bearing water tank.
Particular embodiments described above, only preferred embodiments of the present invention, such as according to the present patent application patent
The equivalent arrangements that scope is done, the technology that should be the present invention are covered.
Claims (7)
1. a kind of processing method of the anticorrosion press-bearing water tank built in heat exchanger, including plastic inner container（1）Be close in plastics
Courage（1）The metal shell of outer wall（2）, plastic inner container（1）Heat exchanger is inside installed（3）；
The plastic inner container（1）By separate plastics stack shell（101）, plastics upper cover（102）And plastics low head
（103）Composition, plastics stack shell（101）For with plastics upper shed（101-1）With plastics under shed（101-2）Cylinder, plastics
Upper cover（102）Opening（102-1）It is welded on plastics upper shed（101-1）, heat exchanger is installed（3）Plastics low head
（103）Pass through opening（103-1）It is welded on plastics under shed（101-2）, and heat exchanger（3）Heat exchange main body（301）Extend into
Plastics stack shell（101）It is interior, heat exchanger（3）Heat transferring medium air inlet pipe（302）With heat transferring medium escape pipe（303）Extend through down
End socket（103）；
The metal shell（2）By metal stack shell independent mutually（201）, metal upper cover（202）And metal low head
（203）Composition, metal stack shell（201）For with metal upper shed（201-1）With metal under shed（201-2）Cylinder, metal
Stack shell（201）By the arc barrel for being axially divided into two equal portions（201-3）And plastics stack shell is close in a manner of interference
（101）Afterwards, by arc barrel（201-3）Upper axially extending seamed edge（201-3a）Welded after docking, metal upper cover（202）With
Interference mode is close to plastics upper cover（102）, and pass through opening（202-1）It is welded on metal upper shed（201-1）, under metal
End socket（203）Plastics low head is close in a manner of interference（103）, and pass through opening（203-1）It is welded on metal under shed
（201-2）, heat transferring medium air inlet pipe（302）With heat transferring medium escape pipe（303）Extend through metal low head（203）, it is special
Sign is to comprise the following steps：
A, plastics stack shell is prepared respectively according to size（101）, plastics upper cover（102）, plastics low head（103）, metal cylinder
Body（201）, metal upper cover（202）And metal low head（203）, wherein metal stack shell（201）By being axially divided into two
The arc barrel of individual equal portions（201-3）, it is standby；
B, first by heat exchanger（3）It is connected to plastics low head（103）, pass through plastics upper cover（102）Opening（102-1）With
Plastics stack shell（101）Plastics upper shed（101-1）Sweat soldering after docking, is provided with heat exchanger（3）Plastics low head
（103）Opening（103-1）With plastics stack shell（101）Plastics under shed（101-2）Sweat soldering after docking, form with interior
Put heat exchanger（3）Plastic inner container（1）；
C, and then by two arc barrels（201-3）Plastics stack shell is close in a manner of interference（101）On, then
By arc barrel（201-3）Upper axially extending seamed edge（201-3a）Electric arc welds after docking, metal upper cover（202）With
Interference mode is close to plastics upper cover（102）After pass through opening（202-1）With metal stack shell（201）Metal upper shed
（201-1）Electric arc welds after docking, metal low head（203）Plastics low head is close in a manner of interference（103）Afterwards by opening
Mouthful（203-1）With metal stack shell（201）Metal under shed（201-2）Electric arc welds after docking, forms anticorrosion press-bearing water tank.
2. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, plastics
Upper cover（102）Opening（102-1）It is welded on plastics upper shed（101-1）Plastic welded seam in composition（104）, metal upper cover
（202）Opening（202-1）It is welded on metal upper shed（201-1）, metal welding seam in composition（204）, upper metal welding seam（204）
With upper plastic welded seam（104）Form adjacent be close to.
3. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, plastics
Low head（103）Opening（103-1）It is welded on plastics under shed（101-2）Form lower plastic welded seam（105）, metal low head
（203）Opening（203-1）It is welded on metal under shed（201-2）, form lower metal welding seam（205）, lower metal welding seam（205）
With lower plastic welded seam（105）Form adjacent be close to.
4. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, it is described
Plastics upper cover（102）Offer faucet（4）, plastics low head（103）Water inlet tap（5）, faucet（5）Sealed on metal
Head（202）, water inlet tap（5）Through metal low head（203）.
5. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, it is described
Heat transferring medium air inlet pipe（302）Pass through air inlet pipe joint（6）Respectively with plastics low head（103）With metal low head（203）It is close
Envelope connection coordinates, heat transferring medium escape pipe（303）Pass through outlet pipe joint（7）Respectively with plastics low head（103）Under metal
End socket（203）It is tightly connected and coordinates.
6. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, plastics
Stack shell（101）, plastics upper cover（102）And plastics low head（103）Wall thickness be 1mm-10mm.
7. the processing method of the anticorrosion press-bearing water tank built in a kind of heat exchanger according to claim 1, it is characterized in that, metal
Stack shell（201）, metal upper cover（202）And metal low head（203）Wall thickness be 1mm-3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668360.3A CN105115161B (en) | 2015-10-17 | 2015-10-17 | Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510668360.3A CN105115161B (en) | 2015-10-17 | 2015-10-17 | Anticorrosion press-bearing water tank and its processing method built in a kind of heat exchanger |
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| CN105115161B true CN105115161B (en) | 2018-01-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278658A (en) * | 2017-01-06 | 2018-07-13 | 东莞市瑞浩节能科技有限公司 | A kind of assembled press-bearing water tank |
| CN111076427B (en) * | 2020-01-12 | 2020-12-01 | 枣庄福源环能机械制造有限公司 | Thin-wall stainless steel water heater inner box |
| CN112902435A (en) * | 2021-02-03 | 2021-06-04 | 中船动力研究院有限公司 | Heating device |
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| CN2550695Y (en) * | 2002-04-18 | 2003-05-14 | 陈利君 | Steel-plastic composite structure solar energy water heater tank inner bladder |
| CN201945068U (en) * | 2011-01-04 | 2011-08-24 | 宁波帅康热水器有限公司 | Heat-exchange water tank of solar water heater |
| CN104654585A (en) * | 2015-01-13 | 2015-05-27 | 山东大学 | Water heater plastic liner and welding process thereof |
| CN204421367U (en) * | 2015-02-06 | 2015-06-24 | 浙江中广电器有限公司 | A kind of air-source water heater pressure-bearing water tank inner liner |
| CN205037574U (en) * | 2015-10-17 | 2016-02-17 | 尹培栋 | Built -in anticorrosion pressure -bearing water tank of heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3913559B2 (en) * | 2002-01-25 | 2007-05-09 | 株式会社コロナ | Hot water storage tank with indirect heat exchanger, manufacturing method thereof, hot water storage hot water bath apparatus and hot water storage hot water heater using the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550695Y (en) * | 2002-04-18 | 2003-05-14 | 陈利君 | Steel-plastic composite structure solar energy water heater tank inner bladder |
| CN201945068U (en) * | 2011-01-04 | 2011-08-24 | 宁波帅康热水器有限公司 | Heat-exchange water tank of solar water heater |
| CN104654585A (en) * | 2015-01-13 | 2015-05-27 | 山东大学 | Water heater plastic liner and welding process thereof |
| CN204421367U (en) * | 2015-02-06 | 2015-06-24 | 浙江中广电器有限公司 | A kind of air-source water heater pressure-bearing water tank inner liner |
| CN205037574U (en) * | 2015-10-17 | 2016-02-17 | 尹培栋 | Built -in anticorrosion pressure -bearing water tank of heat exchanger |
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Effective date of registration: 20171211 Address after: 528305 Guangdong province Foshan city Shunde District Ronggui Road 1, four neighborhood happiness Sinokor floor five (residence declaration) Applicant after: Foshan City Hua Peng Environmental Technology Co. Ltd. Address before: 528300 Guangdong province Foshan city Shunde District Daliang street new Kau neighborhood along 39 North Road, Yi shuixuan 205 unit Applicant before: Yin Peidong |
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Effective date of registration: 20190701 Address after: 224200 Longgang Industrial Zone, Shiyan Town, Dongtai City, Yancheng City, Jiangsu Province (in the operating room of Tonggang Graphite Equipment Co., Ltd.) Patentee after: Dongtai City Tong Gang graphite equipment company limited Address before: 528305 Fourth Floor Fifth of No. 1 Changjin Road, Yunggui Happy Residential Committee, Shunde District, Foshan City, Guangdong Province (Residence Declaration) Patentee before: Foshan City Hua Peng Environmental Technology Co. Ltd. |
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