CN102235751A - Heat exchange tube of water heater and manufacturing method thereof - Google Patents
Heat exchange tube of water heater and manufacturing method thereof Download PDFInfo
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- CN102235751A CN102235751A CN201110054451XA CN201110054451A CN102235751A CN 102235751 A CN102235751 A CN 102235751A CN 201110054451X A CN201110054451X A CN 201110054451XA CN 201110054451 A CN201110054451 A CN 201110054451A CN 102235751 A CN102235751 A CN 102235751A
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- tube
- outer tube
- heat exchanger
- interior pipe
- heat exchange
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Abstract
The embodiment of the invention discloses a heat exchange tube of a water heater and a manufacturing method thereof and relates to the field of water heaters. The heat exchange tube can be used for realizing efficient heat transfer and avoiding the risk of mixing of the heat exchange media inside and outside the tube, has a simple structure and is convenient to process. The heat exchange tube comprises inner heat exchange tubes inside a liner and an outer heat exchange tube outside the liner, wherein the inner heat exchange tubes comprise straight inner tubes and outer tubes; the outer tubes are sleeved outside the inner tubes; and the outer walls of the inner tubes are tightly adhered to the inner walls of the outer walls. The heat exchange tube is applied to the water heater.
Description
Technical field
The present invention relates to field of water heaters, relate in particular to a kind of heat exchanger tube and manufacture method thereof of water heater.
Background technology
Heat exchanger tube is the critical piece in the water heater, and water heater relies on heat exchanger tube that cold water is heated to be hot water, for the user provides life hot water.
Usually, heat exchanger tube places inner bag, and the medium and the water that are used for heat exchange in the heat exchanger tube are separated by by the heat exchanger tube tube wall, medium is not contacted mutually with water, but, after use after a while, the breakage that is corroded of heat exchanger tube tube wall, this will cause medium to enter in the water, or water enters in the medium, and medium enters in the water, because medium has toxicity, can cause the pollution of water, influence user's water safety; Water enters in the medium, also can influence the effectiveness of medium.
At present, prior art provides a kind of structure of double-walled heat exchanging tube, and this kind heat exchanger tube is generally the heat exchanger tube of double-deck red copper helical structure, but there is following problem in this double-walled heat exchanging tube: contact is not tight between the inner and outer pipes, have air layer, heat exchange efficiency is low, the waste lot of materials; The helical structure complex structure, and inside and outside all be copper tube, the cost height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of heat exchanger tube and manufacture method thereof of water heater, realizes high duty heat transfer, the risk of having avoided the inside and outside heat transferring medium of pipe to mix mutually, and simple in structure, easy to process.
For solving the problems of the technologies described above, the heat exchanger tube of water heater of the present invention adopts following technical scheme:
A kind of heat exchanger tube of water heater, comprise internal heat exchange tubes that places inner bag inside and the external heat-exchanging pipe that places the inner bag outside, described internal heat exchange tubes comprises: the interior pipe and the outer tube of straight tube structure, described outer tube sleeve are managed the outside in described, and the outer wall of described interior pipe is adjacent to mutually with described outer tube wall.
The structure with several projectioies and several depressions of the tube wall of pipe for forming in described by the knot technology that expands.
Described projection pushes against with the inwall of described outer tube and contacts.
Described projection is axial strip projected parts, and described several projectioies evenly distribute; Described depression is an axial notch.
The hardness of the material of described outer tube is greater than the hardness of the material of pipe in described.
The material of described outer tube is the carbon element steel or stainless steel.
The outer tube outside of described carbon steel is covered with enamel layer.
The material of pipe is red copper or aluminium in described.
A kind of manufacture method of heat exchanger tube of water heater comprises:
Outer tube is penetrated in the inner bag of water heater, and seal mutually with described inner bag;
Interior pipe is penetrated in the described outer tube, and tie technology with tube swelling in described, the outer wall of described interior pipe is adjacent to mutually with described outer tube wall by expanding.
The tube wall of pipe has the structure of several projectioies and several depressions in described, and described projection pushes against with the inwall of described outer tube and contacts.
In the technical scheme of the embodiment of the invention, by adopting the heat exchanger tube of two-layer pipe, and the internal heat exchange tubes that places inner bag inside is for tying the interior pipe and the outer tube of the straight tube structure of technology preparation by expanding, its heat transfer efficiency height, double-walled construction is safe and reliable, avoided mixed mutually risk between the inside and outside heat transferring medium of pipe, and this heat exchange tube structure is simple, production and processing is convenient.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the heat exchanger tube of embodiment of the invention water heater;
Fig. 2 be among Fig. 1 A-A to the local enlarged diagram of section;
Fig. 3 expands in the embodiment of the invention to tie the structural representation of the employed bloated tool of technology;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the flow chart of manufacture method of the heat exchanger tube of embodiment of the invention water heater.
Description of reference numerals:
The 1-internal heat exchange tubes; 2-external heat-exchanging pipe; The 3-tool that expands;
Pipe in the 11-; The 12-outer tube; The 31-head that expands;
The 311-protuberance; The 312-recess.
The specific embodiment
The embodiment of the invention provides a kind of heat exchanger tube and manufacture method thereof of water heater, realizes high duty heat transfer, the risk of having avoided the inside and outside heat transferring medium of pipe to mix mutually, and simple in structure, easy to process.
Be described in detail below in conjunction with the heat exchanger tube and the manufacture method thereof of accompanying drawing embodiment of the invention water heater.
Medium inside and outside heat exchanger tube mixes mutually, the embodiment of the invention provides a kind of heat exchanger tube of water heater, as shown in Figure 1, this heat exchanger tube comprises: the internal heat exchange tubes 1 and the external heat-exchanging pipe 2 that places the inner bag outside that place inner bag inside, internal heat exchange tubes 1 is structure as a whole with external heat-exchanging pipe 2, because only the internal heat exchange tubes 1 tube wall breakage in inner bag inside just can cause medium to mix mutually, therefore only need internal heat exchange tubes 1 is set to two-layer pipe, then described internal heat exchange tubes 1 comprises: the interior pipe 11 of straight tube structure and outer tube 12, described outer tube 12 is enclosed within described interior pipe 11 outsides, the interior pipe 11 and the outer tube 12 of straight tube structure are simple in structure, and production and processing is convenient.As shown in Figure 2, the outer wall of pipe 11 is adjacent to mutually with described outer tube 12 inwalls in described, particularly, when the heat exchanger tube of the water heater that provides of the preparation embodiment of the invention, earlier outer tube 12 is penetrated in the inner bag of water heater, and seal mutually with described inner bag, then, interior pipe 11 is penetrated in the described outer tube 12, and pipe in described 11 is expanded by the knot technology that expands, the outer wall of described interior pipe 11 is adjacent to mutually with described outer tube 12 inwalls, wherein, the inner bag outside is stayed in the end of interior pipe 11, and the end of staying the interior pipe 11 of inner bag outside constitutes the part of external heat-exchanging pipe 2 mentioned above, can be connected by connector between the end of adjacent interior pipe 11, constitute external heat-exchanging pipe 2.
In the present embodiment, by adopting the heat exchanger tube of two-layer pipe, and the internal heat exchange tubes that places inner bag inside is interior pipe and the outer tube that comprises straight tube structure, its heat transfer efficiency height, double-walled construction is safe and reliable, avoided mixed mutually risk between the inside and outside heat transferring medium of pipe, and this heat exchange tube structure is simple, production and processing is convenient.
Further, the tube wall of described interior pipe 11 is the structures with several projectioies and several depressions by the knot technology formation of expanding.In outer tube 12 is enclosed within on the pipe 11 after, further adopt the knot technology that expands, internally manage 11 knots that expand, make described projection push against and contact with the inwall of described outer tube.Wherein, the structure of the knot bloated tool 3 that technology adopted that expands has protuberance 311 and recess 312 on 31 circumferential surface that expand of the tool 3 that expands as shown in Figure 3, and in the present embodiment, protuberance 311 and recess 312 are spaced apart, and are all axial strip, adaptably.The projection of interior pipe is axial strip projected parts, and described several projectioies evenly distribute; Described depression is an axial notch.
Usually, the hardness of the material of outer tube 12 is greater than the hardness of the material of pipe 11 in described.Therefore, knot technology expands, deformation take place in interior pipe 11, and outer tube 12 no changes, projection on the interior pipe 11 pushes against with outer tube 12 and contacts, help the heat conduction, and the equally distributed small air duct of reservation between groove on the interior pipe 11 and the outer tube 12, if outer tube 12 or the 11 one-sided breakages of interior pipe, the heat transferring medium of leakage (refrigerant and water) are all escaped along this passage, avoided the both sides heat transferring medium to mix mutually and polluted water quality or cause heat pump thoroughly to damage even electric leakage, wherein, avoid mutual the mixing of medium to guarantee higher heat transfer efficiency in order to take into account, preferably, projection respectively accounts for 50% with groove.
Further, in the present embodiment, the material of described outer tube 12 can be carbon steel or stainless steel.
For anticorrosion, outer tube 12 outsides of described carbon steel are covered with enamel layer.
Further, in the present embodiment, the material of described interior pipe is red copper or aluminium.
In the present embodiment, by adopting the heat exchanger tube of two-layer pipe, and the internal heat exchange tubes that places inner bag inside is interior pipe and the outer tube that comprises straight tube structure, interior pipe is after the knot technology that expands, part tube wall closely contacts with outer tube, the heat transfer efficiency height, keep equally distributed small air duct between another part tube wall and the outer tube, when having avoided as if outer tube or the one-sided breakage of interior pipe, heat transferring medium mixes mutually and pollutes water quality or cause heat pump thoroughly to damage even electric leakage, double-walled construction is safe and reliable, and is simple in structure, and production and processing is convenient.
The embodiment of the invention also provides a kind of manufacture method of heat exchanger tube of water heater, and as shown in Figure 5, this method comprises:
Wherein, the overall structure of heat exchanger tube comprises: the internal heat exchange tubes and the external heat-exchanging pipe that places the inner bag outside that place inner bag inside, because only the internal heat exchange tubes tube wall breakage in inner bag inside just can cause medium to mix mutually, therefore only need internal heat exchange tubes to be set to two-layer pipe.Then described internal heat exchange tubes comprises: the interior pipe and the outer tube of straight tube structure.
Outer tube sleeve is managed the outside in described, the outer wall of interior pipe is adjacent to mutually with outer tube wall.Particularly, the tube wall of described interior pipe has the structures of several projectioies and several depressions, and described projection pushes against with the inwall of described outer tube and contacts.Wherein, the structure of the knot bloated tool 3 that technology adopted that expands has protuberance 311 and recess 312 on 31 circumferential surface that expand of the tool 3 that expands as shown in Figure 3, and in the present embodiment, protuberance 311 and recess 312 are spaced apart, and are all axial strip, adaptably.The projection of interior pipe is axial strip projected parts, and described several projectioies evenly distribute; Described depression is an axial notch.
Usually, the hardness of the material of outer tube is greater than the hardness of the material of pipe in described.Therefore, adopt the knot technology that expands to make, only be interior pipe generation deformation, and the outer tube no change, projection on the interior pipe pushes against with outer tube and contacts, help the heat conduction, and the equally distributed small air duct of reservation between groove on the interior pipe and the outer tube, if outer tube or the one-sided breakage of interior pipe, the heat transferring medium of leakage (refrigerant and water) are all escaped along this passage, avoided the both sides heat transferring medium to mix mutually and polluted water quality or cause heat pump thoroughly to damage even electric leakage, wherein, avoid mutual the mixing of medium to guarantee higher heat transfer efficiency in order to take into account, preferably, projection respectively accounts for 50% with groove.
Further, in the present embodiment, the material of described outer tube 12 can be carbon steel or stainless steel.For anticorrosion, outer tube 12 outsides of described carbon steel are covered with enamel layer.Further, in the present embodiment, the material of described interior pipe is red copper or aluminium.
In the present embodiment, by making the heat exchanger tube of two-layer pipe, and the internal heat exchange tubes that places inner bag inside is interior pipe and the outer tube that comprises straight tube structure, interior pipe is after the knot technology that expands, part tube wall closely contacts with outer tube, the heat transfer efficiency height, keep equally distributed small air duct between another part tube wall and the outer tube, when having avoided as if outer tube or the one-sided breakage of interior pipe, heat transferring medium mixes mutually and pollutes water quality or cause heat pump thoroughly to damage even electric leakage, double-walled construction is safe and reliable, and is simple in structure, and production and processing is convenient.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. the heat exchanger tube of a water heater, comprise internal heat exchange tubes that places inner bag inside and the external heat-exchanging pipe that places the inner bag outside, it is characterized in that, described internal heat exchange tubes comprises: the interior pipe and the outer tube of straight tube structure, described outer tube sleeve is managed the outside in described, the outer wall of described interior pipe is adjacent to mutually with described outer tube wall.
2. heat exchanger tube according to claim 1 is characterized in that, have several structures protruding and several depressions of the tube wall of described interior pipe for forming by the knot technology that expands.
3. heat exchanger tube according to claim 2 is characterized in that, described projection pushes against with the inwall of described outer tube and contacts.
4. heat exchanger tube according to claim 2 is characterized in that, described projection is axial strip projected parts, and described several projectioies evenly distribute; Described depression is an axial notch.
5. according to the described heat exchanger tube of the arbitrary claim of claim 1-4, it is characterized in that the hardness of the material of described outer tube is greater than the hardness of the material of pipe in described.
6. heat exchanger tube according to claim 5 is characterized in that, the material of described outer tube is the carbon element steel or stainless steel.
7. heat exchanger tube according to claim 6 is characterized in that, the outer tube outside of described carbon steel is covered with enamel layer.
8. heat exchanger tube according to claim 6 is characterized in that, the material of described interior pipe is red copper or aluminium.
9. the manufacture method of the heat exchanger tube of a water heater is characterized in that, comprising:
Outer tube is penetrated in the inner bag of water heater, and seal mutually with described inner bag;
Interior pipe is penetrated in the described outer tube, and tie technology with tube swelling in described, the outer wall of described interior pipe is adjacent to mutually with described outer tube wall by expanding.
10. method according to claim 9 is characterized in that, the tube wall of described interior pipe has the structures of several projectioies and several depressions, and described projection pushes against with the inwall of described outer tube and contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110054451XA CN102235751A (en) | 2011-03-08 | 2011-03-08 | Heat exchange tube of water heater and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110054451XA CN102235751A (en) | 2011-03-08 | 2011-03-08 | Heat exchange tube of water heater and manufacturing method thereof |
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| CN102235751A true CN102235751A (en) | 2011-11-09 |
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| CN201110054451XA Pending CN102235751A (en) | 2011-03-08 | 2011-03-08 | Heat exchange tube of water heater and manufacturing method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050139173A1 (en) * | 2003-12-29 | 2005-06-30 | Michael Gordon | Multi-wall heat exchanger for a water heater |
| JP2009243715A (en) * | 2008-03-28 | 2009-10-22 | Kobelco & Materials Copper Tube Inc | Leakage detecting tube and heat exchanger |
| JP2009250562A (en) * | 2008-04-09 | 2009-10-29 | Panasonic Corp | Heat exchanger |
| CN201434612Y (en) * | 2009-07-15 | 2010-03-31 | 山西汾西热能工程有限公司 | Integral finned air cooler |
| CN201476306U (en) * | 2009-08-26 | 2010-05-19 | 广东美的电器股份有限公司 | Water tank of heat pump water heater |
| CN201662233U (en) * | 2010-02-06 | 2010-12-01 | 梁洪森 | Flat-plate water tank used for water heater |
| CN201731626U (en) * | 2010-06-24 | 2011-02-02 | 艾欧史密斯(中国)热水器有限公司 | Composite heat exchange and water storage type heat pump water heater |
-
2011
- 2011-03-08 CN CN201110054451XA patent/CN102235751A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050139173A1 (en) * | 2003-12-29 | 2005-06-30 | Michael Gordon | Multi-wall heat exchanger for a water heater |
| JP2009243715A (en) * | 2008-03-28 | 2009-10-22 | Kobelco & Materials Copper Tube Inc | Leakage detecting tube and heat exchanger |
| JP2009250562A (en) * | 2008-04-09 | 2009-10-29 | Panasonic Corp | Heat exchanger |
| CN201434612Y (en) * | 2009-07-15 | 2010-03-31 | 山西汾西热能工程有限公司 | Integral finned air cooler |
| CN201476306U (en) * | 2009-08-26 | 2010-05-19 | 广东美的电器股份有限公司 | Water tank of heat pump water heater |
| CN201662233U (en) * | 2010-02-06 | 2010-12-01 | 梁洪森 | Flat-plate water tank used for water heater |
| CN201731626U (en) * | 2010-06-24 | 2011-02-02 | 艾欧史密斯(中国)热水器有限公司 | Composite heat exchange and water storage type heat pump water heater |
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Application publication date: 20111109 |