CN105805948A - Fixing and sealing assembly for air energy water heater working medium nozzle - Google Patents

Fixing and sealing assembly for air energy water heater working medium nozzle Download PDF

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Publication number
CN105805948A
CN105805948A CN201610299296.0A CN201610299296A CN105805948A CN 105805948 A CN105805948 A CN 105805948A CN 201610299296 A CN201610299296 A CN 201610299296A CN 105805948 A CN105805948 A CN 105805948A
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CN
China
Prior art keywords
working medium
medium nozzle
water heater
stainless steel
hole
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.)
Pending
Application number
CN201610299296.0A
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Chinese (zh)
Inventor
张亚宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNAN EWAVV NEW ENERGY TECHNOLOGY Co Ltd
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HUNAN EWAVV NEW ENERGY TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HUNAN EWAVV NEW ENERGY TECHNOLOGY Co Ltd filed Critical HUNAN EWAVV NEW ENERGY TECHNOLOGY Co Ltd
Priority to CN201610299296.0A priority Critical patent/CN105805948A/en
Publication of CN105805948A publication Critical patent/CN105805948A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention provides a fixing and sealing assembly for an air energy water heater working medium nozzle. The fixing and sealing assembly comprises the working medium nozzle used for fixing a stainless steel pipe used for circulation of a working medium, a pipeline connecting piece used for connecting an outer pipeline with the working medium nozzle, a nut used for being matched with one end of the working medium nozzle to lock the working medium nozzle in an inner container body of a water heater, and a sealing component. The working medium nozzle comprises a T-shaped working medium nozzle body. In the direction from the interior of the inner container body to the exterior of the inner container body, a first through hole and a second through hole which communicate with each other are sequentially formed in the working medium nozzle body in the axis direction of the working medium nozzle body. The inner diameter of the first through hole is matched with the outer diameter of the stainless steel pipe, and the inner diameter of the second through hole is 1.2-1.5 times of the outer diameter of the stainless steel pipe. The pipeline connecting piece comprises a first section of cylindrical barrel, a second section of cylindrical barrel and a third section of cylindrical barrel which are sequentially connected in the axis direction of the pipeline connecting piece. The fixing and sealing assembly for the air energy water heater working medium nozzle is good in sealing effect, high in safety performance and simple in structure.

Description

Air-source water heater working medium nozzle fixing seal assembly
Technical field
The present invention relates to air-source water heater field, be specifically related to a kind of air-source water heater working medium nozzle fixing seal assembly.
Background technology
Air-source water heater (also known as " air source hot pump water heater ") be of rising in recent years just in flourish technology, there is because of it advantages such as energy-efficient, easy to use, safety and environmental protection and be widely popularized and apply.
Its work process is: the low-temperature heat quantity that a, working medium (cold-producing medium) absorb in air;B, working medium gasify;C, working medium are compressed by the compressor supercharging and heat up;D, working medium transfer heat to cold water, temperature of cold water rises by heat exchanger;Being stored or discharge use after e, temperature of cold water rises, the working medium reducing temperature waits that entering the next one circulates.
In above-mentioned whole work process, working medium is run all the time in the stainless steel tube (coil pipe) of bending, stainless steel tube is positioned at the inner bag of water heater, cold water is outside stainless steel tube and between inner bag inwall, and inner bag have special cooling water inlet and heat up after hot water outlet.In the place that stainless steel tube is connected with cooling water inlet and hot water outlet, it is both needed to arrange corresponding working medium nozzle assembly, so that stainless steel tube is played fixation, stainless steel tube and gallbladder body is played sealing function, it addition, also need to provide the connection interface of external pipeline.
Reason due to assembly difficulty, existing working medium nozzle is many inside inner bag with welding of stainless steel tube, the end of working medium nozzle is welded with the outer surface of stainless steel tube, 304 rustless steels nickeliferous 7.5%~8%, the major function of nickel is Sprouting resistance, anticorrosive, stainless steel tube is with the process of working medium nozzle high-temperature soldering, and the nickel content in stainless steel tube can reduce, and affects its Sprouting resistance, corrosion resistance.Meanwhile, in the process of high-temperature soldering, the content of chromium also can be reduced to 11% from 13% normal condition, has a strong impact on the rustless property of stainless steel tube.Namely factors above may result in after water heater uses the long period and leaks, and affects service life and safety in utilization.
It addition, China's major part region belongs to varieties in saline-alkali areas and coastal area, the chloride ion content in water is generally higher, further results in the stainless steel tube coil pipe seriously corroded of the immersion type air-source water heater that Vehicles Collected from Market uses;During seriously corroded, may result in tube wall perforation, refrigerant leakage, working substance system is intake, and compressor burns, and causes producing and after cost lifting, arranges and make water heater to use, seriously govern the development of air energy industry.
nullThrough retrieval,Application number is 201510046880.0,Name is called that the patent application of " mounting structure of a kind of coil exchanger turnover working medium nozzle " provides following technical scheme: " the mounting structure of a kind of coil exchanger turnover working medium nozzle,Working medium nozzle including an inner hollow,During described working medium nozzle penetrates the sidewall of a container and extends into the inside of described container,The inner chamber of this working medium nozzle is coated with a pipe heat exchanger,It is characterized in that: described working medium nozzle be arranged with two sealing rings laying respectively at described container side wall both sides in appearance,Described working medium nozzle is positioned in the part of external container and is provided with the projection for extruding described sealing ring,This projection is arranged at the position of the sidewall of working medium nozzle adjacent vessel,To be positioned in the part of internal tank threaded a locking nut that can extrude another sealing ring for described working medium nozzle ".
The program there is problems in that
First, locking nut can be produced drag when locking nut is to right rotation by the sealing gland in the program, if it is nonmetal sealing gland, then it is likely to be crushed, if it is the sealing gland of metal, then drag to the left is relatively big, causes that sealing ring contacts with container not tight, sealing effectiveness is poor, and cold water is revealed.
Secondly, using epoxy sealing in the program between working medium nozzle and heat exchanger tube, Temperature of Working, up to 80 DEG C of high temperature, can make the hard crisp aging fragmentation of epoxy resin;If working medium tube copper pipe, its long period of soaking in the hot water can get rusty generation patina affect water quality, if stainless steel tube, rely on swollen horn mouth firmly contact with working medium nozzle the mode of sealing when power pressure is more than 3.0MPa it is difficult to ensure that do not produce leakage.
Therefore this area needs a kind of working medium nozzle assembly that can solve problem above.
Summary of the invention
For overcoming the deficiency of working medium nozzle assembly in prior art, the present invention provides the air-source water heater working medium nozzle fixing seal assembly of a kind of good sealing effect, security performance height, simple in construction.Concrete scheme is as follows:
A kind of air-source water heater working medium nozzle fixing seal assembly, including the working medium nozzle of the stainless steel tube being fixed for working medium circulation, for connecting the pipeline connecting parts of exterior line and working medium nozzle, for working medium nozzle lock onto nut and the seal member of the inner bag gallbladder body of water heater with the one end fits of working medium nozzle;
Working medium nozzle includes the working medium nozzle body of T font, and during use, the wide one end of described working medium nozzle body outline is positioned at the inside of inner bag gallbladder body, and the narrow one end of its outline is positioned at the outside of inner bag gallbladder body;By the inside of water heater liner gallbladder body to outside direction, described working medium nozzle body is sequentially provided with the first through hole being interconnected and the second through hole along its axis direction, the internal diameter of described first through hole and the external diameter of described stainless steel tube match, 1.2~1.5 times of the external diameter that internal diameter is described stainless steel tube of described second through hole;
Pipeline connecting parts includes the first paragraph cylindrical tube, second segment cylindrical tube and the 3rd section of cylindrical tube that are sequentially connected with along its axis direction, the described internal diameter of first paragraph cylindrical tube and the external diameter of stainless steel tube match, and its external diameter is less than the internal diameter of the second through hole;1.05~1.2 times of the internal diameter that external diameter is the second through hole of described second segment cylindrical tube, the external diameter of its internal diameter and stainless steel tube of being connected one end with described first cylindrical tube matches and 0.5~0.9 times of the internal diameter that internal diameter is stainless steel tube of its other end;The outer wall of described 3rd section of cylindrical tube is provided with the external screw thread for fixing whole pipeline connecting parts.
According to a preferred embodiment of the present invention, the inwall of described first through hole is provided with two annular grooves holding the first sealing ring and the second sealing ring, and during use, two annular grooves lay respectively at inside and outside inner bag gallbladder body.
According to a preferred embodiment of the present invention, the outer wall of described working medium nozzle body is provided with the 3rd sealing ring with the inner side of inner bag gallbladder body junction.
According to a preferred embodiment of the present invention, the material of the first sealing ring, the second sealing ring and the 3rd sealing ring is heat-resistant silicon rubber.
According to a preferred embodiment of the present invention, the material of stainless steel tube is 316L rustless steel, and the material of inner bag gallbladder body is 304 rustless steels.
According to a preferred embodiment of the present invention, the left side of pipeline connecting parts is welded with stainless steel tube outer surface.
According to a preferred embodiment of the present invention, the outer surface spot welding of the right side of working medium nozzle and pipeline connecting parts.
According to a preferred embodiment of the present invention, the outer wall being located at working medium nozzle body and the 4th sealing ring in the groove in the outside of inner bag gallbladder body junction are also included.
Technical scheme provided by the invention has the advantages that
1, the weld seam of the air-source water heater working medium nozzle fixing seal assembly that the technical program provides, traditional working medium nozzle and stainless steel tube is positioned at inside inner bag, and in the process of high-temperature soldering, stainless steel tube can cause damage, affects its antirust, anticorrosion and acid-proof performance;After improvement, weld seam is arranged outside the tank, fundamentally completely cut off contacting of water in inner bag and weld seam, stainless steel tube and working medium nozzle then adopt the first sealing ring and the second sealing ring, first sealing ring forms ground floor and seals, second sealing ring further functions as sealing function, it is prevented that cold water is revealed from the gap of the first through hole of working medium nozzle with stainless steel tube;And the 3rd sealing ring is between one end and inner bag gallbladder body that the outline of working medium nozzle is wide, when nut is installed, inner bag gallbladder body is applied pressure by nut, so that the 3rd sealing ring is compacted, play good sealing function, and outline edge has convex edge to prevent the 3rd sealing ring from extending to radial outside, further enhancing sealing effectiveness.
Meanwhile, enhance the fatigue strength of stainless steel inner container, extend the service life of air-source water heater.
2, the air-source water heater working medium nozzle fixing seal assembly that the technical program provides, the step surface of the right side of stainless steel tube and the inner bore of step of pipeline connecting parts is close to, working medium can be formed the first barrier preventing working medium from revealing, the outer wall of stainless steel tube welds with the end face of the first paragraph cylindrical tube of pipeline connecting parts, the main effect preventing working medium from revealing can be played, make working medium will not reveal generation harm, the end face spot welding of first paragraph cylindrical tube and working medium nozzle, the effect of firm pipeline connecting parts can be simultaneously worked as, therefore this assembly has good security performance.
3, the air-source water heater working medium nozzle fixing seal assembly that the technical program provides, only combined by working medium nozzle, nut, pipeline connecting parts, the first sealing ring, the second sealing ring and the 3rd sealing ring, simple in construction, installation and removal are all very convenient, can be substantially reduced the cost of mass production.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below with reference to accompanying drawings, the present invention is further detailed explanation.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, drawings discussed below is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of air-source water heater working medium nozzle fixing seal assembly provided by the invention;
In figure: 1, working medium nozzle, 11, working medium nozzle body, the 12, first through hole, 13, groove, the 14, second through hole, 2, pipeline connecting parts, 21, second segment cylindrical tube, 22, first paragraph cylindrical tube, the 23, the 3rd section of cylindrical tube, 3, nut, the 4, first sealing ring, the 5, second sealing ring, 6, the 3rd sealing ring, 7, stainless steel tube, 8, inner bag gallbladder body, the 9, the 4th sealing ring.
Detailed description of the invention
Below in conjunction with the accompanying drawing of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete description, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.
Refer to Fig. 1, a kind of air-source water heater working medium nozzle fixing seal assembly, including the working medium nozzle 1 of the stainless steel tube 7 being fixed for working medium circulation, for connecting the pipeline connecting parts 2 of exterior line and working medium nozzle 1, for working medium nozzle 1 lock onto nut 3 and the seal member of the inner bag gallbladder body 8 of water heater with the one end fits of working medium nozzle 1.
Working medium nozzle 1 includes the working medium nozzle body 11 of T font, and during use, the wide one end of described working medium nozzle body 11 outline is positioned at the inside of inner bag gallbladder body 8, and the narrow one end of its outline is positioned at the outside of inner bag gallbladder body 8;By the inside of inner bag gallbladder body 8 to outside direction, described working medium nozzle body 11 is sequentially provided with the first through hole 12 and the second through hole 14 being interconnected along its axis direction, the internal diameter of described first through hole 12 and the external diameter of described stainless steel tube 7 match, 1.2~1.5 times of the external diameter that internal diameter is described stainless steel tube 7 of described second through hole 14.
Pipeline connecting parts 2 includes the first paragraph cylindrical tube 22, second segment cylindrical tube 21 and the 3rd section of cylindrical tube 23 that are sequentially connected with along its axis direction, the internal diameter of described first paragraph cylindrical tube 22 and the external diameter of stainless steel tube 7 match, and its external diameter is less than the internal diameter of the second through hole 14;The external diameter of described second segment cylindrical tube 21 is 1.05~1.2 times of the internal diameter of the second through hole 14, and the external diameter of its internal diameter and stainless steel tube 7 of being connected one end with described first cylindrical tube 22 matches and 0.5~0.9 times of the internal diameter that internal diameter is stainless steel tube 7 of its other end;The outer wall of described 3rd section of cylindrical tube 23 is provided with the external screw thread for fixing whole pipeline connecting parts 2.
Further, the inwall of described first through hole 12 is provided with two annular grooves holding the first sealing ring 4 and the second sealing ring 5, and during use, two annular grooves lay respectively at inside and outside inner bag gallbladder body 8.
Further, the outer wall of described working medium nozzle body 11 is provided with the 3rd sealing ring 6 with the inner side of inner bag gallbladder body 8 junction.
Further, the material of first sealing ring the 4, second sealing ring 5 and the 3rd sealing ring 6 is heat-resistant silicon rubber.In stainless steel tube 7, the working medium (cold-producing medium) of flowing is R22 or R134A, the hot water of 55 DEG C it is full of between stainless steel tube 7 and inner bag gallbladder body 8, and hot water may be increased to higher temperature as required, therefore using this heat-resistant silicon rubber can resist the temperature bearing hot water well, it is ensured that cold water is unlikely leakage.
Further, the material of stainless steel tube 7 is 316L rustless steel, and the material of inner bag gallbladder body 8 is 304 rustless steels.Comparing crystal inner liner and enamel inner container, it is high that stainless steel inner container has good anti-corrosive properties, intensity;Under high temperature resistant, room temperature, corrosion resistance is strong;Stable performance, not easily gets rusty.
Further, the left side of pipeline connecting parts 2 is welded with stainless steel tube 7 outer surface.
Further, the outer surface spot welding of the right side of working medium nozzle 1 and pipeline connecting parts 2.Make working medium nozzle 1 and pipeline connecting parts 2 interfix not produce to rotate so that spot welding is fixing, and use full weld to be likely to damage the external screw thread of working medium nozzle 1, therefore without full weld.
Further, the outer wall being located at working medium nozzle body 11 and the 4th sealing ring 9 in the groove 14 in the outside of inner bag gallbladder body 8 junction are also included.4th sealing ring 9 bears the pressure of the radial direction that nut 3 applies, and bears axial extruding, can prevent the minimal amount of hot water leaked out outside inner bag gallbladder body 8 that may be present from continuing to reveal, further ensure that sealing effectiveness is good.
This assembly fully meets sealing and matching requirements, the endurance pulse test recording stainless steel inner container through test can reach more than 200,000 times, standard GB/T/T23137-2008 " domestic and similar applications water heater " requires that pulsating pressure test number (TN) is 100,000 times, and the index of the technical program reaches industry-leading level.
The foregoing is only embodiments of the invention; not thereby the scope of patent protection of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; directly or indirectly it is used in other relevant technical field, all in like manner includes in the scope of patent protection of the present invention.

Claims (8)

1. an air-source water heater working medium nozzle fixing seal assembly, it is characterized in that, including the stainless steel tube (7) being fixed for working medium circulation working medium nozzle (1), be used for connecting the pipeline connecting parts (2) of exterior line and working medium nozzle (1), for the one end fits of working medium nozzle (1) working medium nozzle (1) being lock onto nut (3) and the seal member of inner bag gallbladder body (8) of water heater;
Working medium nozzle (1) includes working medium nozzle body (11) of T font, during use, the wide one end of described working medium nozzle body (11) outline is positioned at the inside of inner bag gallbladder body (8), and the narrow one end of its outline is positioned at the outside of inner bag gallbladder body (8);By the inside of inner bag gallbladder body (8) to outside direction, described working medium nozzle body (11) is sequentially provided with the first through hole (12) and the second through hole (14) that are interconnected along its axis direction, the internal diameter of described first through hole (12) and the external diameter of described stainless steel tube (7) match, 1.2~1.5 times of the external diameter that internal diameter is described stainless steel tube (7) of described second through hole (14);
Pipeline connecting parts (2) includes the first paragraph cylindrical tube (22), second segment cylindrical tube (21) and the 3rd section of cylindrical tube (23) that are sequentially connected with along its axis direction, the internal diameter of described first paragraph cylindrical tube (22) and the external diameter of stainless steel tube (7) match, and its external diameter is less than the internal diameter of the second through hole (14);1.05~1.2 times of the internal diameter that external diameter is the second through hole (14) of described second segment cylindrical tube (21), the external diameter of its internal diameter and stainless steel tube (7) of being connected one end with described first cylindrical tube (22) matches and 0.5~0.9 times of the internal diameter that internal diameter is stainless steel tube (7) of its other end;The outer wall of described 3rd section of cylindrical tube (23) is provided with the external screw thread for fixing whole pipeline connecting parts (2).
2. air-source water heater working medium nozzle fixing seal assembly according to claim 1, it is characterized in that, the inwall of described first through hole (12) is provided with two annular grooves holding the first sealing ring (4) and the second sealing ring (5), during use, two annular grooves lay respectively at inside and outside inner bag gallbladder body (8).
3. air-source water heater working medium nozzle fixing seal assembly according to claim 2, it is characterised in that the inner side of the outer wall of described working medium nozzle body (11) and inner bag gallbladder body (8) junction is provided with the 3rd sealing ring (6).
4. air-source water heater working medium nozzle fixing seal assembly according to claim 3, it is characterised in that the material of the first sealing ring (4), the second sealing ring (5) and the 3rd sealing ring (6) is heat-resistant silicon rubber.
5. air-source water heater working medium nozzle fixing seal assembly according to claim 3, it is characterised in that the material of stainless steel tube (7) is 316L rustless steel, and the material of inner bag gallbladder body (8) is 304 rustless steels.
6. air-source water heater working medium nozzle fixing seal assembly according to claim 3, it is characterised in that the left side of pipeline connecting parts (2) is welded with stainless steel tube (7) outer surface.
7. air-source water heater working medium nozzle fixing seal assembly according to claim 6, it is characterised in that the outer surface spot welding of the right side of working medium nozzle (1) and pipeline connecting parts (2).
8. air-source water heater working medium nozzle fixing seal assembly according to claim 6, it is characterized in that, also include the outer wall being located at working medium nozzle body (11) and the 4th sealing ring (9) in the groove (14) in the outside of inner bag gallbladder body (8) junction.
CN201610299296.0A 2016-05-06 2016-05-06 Fixing and sealing assembly for air energy water heater working medium nozzle Pending CN105805948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610299296.0A CN105805948A (en) 2016-05-06 2016-05-06 Fixing and sealing assembly for air energy water heater working medium nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610299296.0A CN105805948A (en) 2016-05-06 2016-05-06 Fixing and sealing assembly for air energy water heater working medium nozzle

Publications (1)

Publication Number Publication Date
CN105805948A true CN105805948A (en) 2016-07-27

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201615219U (en) * 2010-04-06 2010-10-27 浙江斯帝特新能源有限公司 Stainless steel corrugated pipe dual-sealing structure
JP2012047224A (en) * 2010-08-25 2012-03-08 Daikin Industries Ltd Pipe joint, and hot water supply device, air conditioning device and floor heating device using the same
CN202274631U (en) * 2011-09-16 2012-06-13 诸暨市国大塑业有限公司 Connecting structure for electric water heater
JP2012242080A (en) * 2011-05-20 2012-12-10 Nichirei Kogyo Kk Water heater or the like, and method of manufacturing water heater or the like
CN202630422U (en) * 2012-06-16 2012-12-26 傅亚蓉 Heat-exchanging water tank of electric water heater
CN202769076U (en) * 2012-03-31 2013-03-06 江苏翠波新能源发展有限公司 Sealing device for pipeline of heat exchanger for water tank of water heater
CN103470885A (en) * 2013-09-22 2013-12-25 湖南埃瓦新能源科技有限公司 Fixing part used for fixing water heater pipeline
CN104596326A (en) * 2015-01-29 2015-05-06 广东百思特管业科技有限公司 Mounting structure for inlet-outlet working medium nozzle of coiled pipe heat exchanger
CN205641552U (en) * 2016-05-06 2016-10-12 湖南埃瓦新能源科技有限公司 Fixed seal subassembly can water heater working medium be chewed to air

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201615219U (en) * 2010-04-06 2010-10-27 浙江斯帝特新能源有限公司 Stainless steel corrugated pipe dual-sealing structure
JP2012047224A (en) * 2010-08-25 2012-03-08 Daikin Industries Ltd Pipe joint, and hot water supply device, air conditioning device and floor heating device using the same
JP2012242080A (en) * 2011-05-20 2012-12-10 Nichirei Kogyo Kk Water heater or the like, and method of manufacturing water heater or the like
CN202274631U (en) * 2011-09-16 2012-06-13 诸暨市国大塑业有限公司 Connecting structure for electric water heater
CN202769076U (en) * 2012-03-31 2013-03-06 江苏翠波新能源发展有限公司 Sealing device for pipeline of heat exchanger for water tank of water heater
CN202630422U (en) * 2012-06-16 2012-12-26 傅亚蓉 Heat-exchanging water tank of electric water heater
CN103470885A (en) * 2013-09-22 2013-12-25 湖南埃瓦新能源科技有限公司 Fixing part used for fixing water heater pipeline
CN104596326A (en) * 2015-01-29 2015-05-06 广东百思特管业科技有限公司 Mounting structure for inlet-outlet working medium nozzle of coiled pipe heat exchanger
CN205641552U (en) * 2016-05-06 2016-10-12 湖南埃瓦新能源科技有限公司 Fixed seal subassembly can water heater working medium be chewed to air

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Application publication date: 20160727