CN204176920U - Water heater and inner bag assembly thereof - Google Patents
Water heater and inner bag assembly thereof Download PDFInfo
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- CN204176920U CN204176920U CN201420613508.4U CN201420613508U CN204176920U CN 204176920 U CN204176920 U CN 204176920U CN 201420613508 U CN201420613508 U CN 201420613508U CN 204176920 U CN204176920 U CN 204176920U
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- inner bag
- heat exchanger
- exchanger tube
- water heater
- bag assembly
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Abstract
The utility model discloses a kind of water heater and inner bag assembly thereof, inner bag assembly comprises inner bag and is wound in the heat exchanger tube of described inner bag outside, and described heat exchanger tube is pipe; The outer surface of described inner bag has can the groove of accommodating described heat exchanger tube, and the cross section of described groove inner wall is circular arc, and the inwall of the outer wall of described heat exchanger tube and described groove fits.In the inner bag assembly that the utility model provides, the cross section of heat exchanger tube and the contact wire of inner bag are circular arc line, in prior art, the cross section of heat exchanger tube and the contact wire of inner bag are the string being connected above-mentioned circular arc line two ends, and the length of circular arc must be greater than the length of the string connecting these circular arc two ends, and the length of heat exchanger tube is certain, therefore heat exchanger tube and inner bag contact area increase greatly in this novel inner bag assembly provided, corresponding heat exchange area increases, and improves heat exchange efficiency.When heat exchange amount one timing, heat exchanger tube use amount can be saved the while of ensureing that heat exchange area is nondecreasing, reduce the cost of water heater.
Description
Technical field
The utility model relates to technical field of water heaters, more particularly, relates to a kind of water heater and inner bag assembly thereof.
Background technology
Water heater components comprises stainless steel inner container and is wound in the heat exchanger tube of stainless steel inner container outside, realizes heating the water in inner bag 01 by the heat exchange between heat exchanger tube 02 and inner bag 01.As depicted in figs. 1 and 2, in order to increase the contact area between heat exchanger tube 02 and inner bag 01 in prior art, carry out be wound around heat exchanger tube 02 last as D type is processed in the cross section of pipe, then by around pipe machine by cross section being the outer surface that the heat exchanger tube 02 of D type is wrapped in inner bag 01, and contacted with inner bag by the straight line portion in heat exchanger tube cross section when being wound around, and the straight length in heat exchanger tube cross section is L.
Setting like this, breach rate η=(the D-H)/D in heat exchanger tube cross section, in order to ensure rigidity and the contact stress of heat exchanger tube 02, usual η < 25%, as D=9.52mm, the height H=7.2mm in heat exchanger tube cross section after usual shaping, now the straight length L in heat exchanger tube cross section is about 8.31mm, if the total length that heat exchanger tube is wound around outside the tank is N, then the heat exchange area S=L*m=8.31mm*N between heat exchanger tube and inner bag.
But so arrange, although increase the heat exchange area between heat exchanger tube 02 and inner bag 01 to a certain extent, but still can not meet the demand of people to hot water, and need the heat exchanger tube length of winding very long, cost is higher.
In sum, how effectively increasing the heat exchange area between heat exchanger tube and inner bag and the cost reducing water heater, is current those skilled in the art's urgent problem.
Utility model content
In view of this, first object of the present utility model is to provide a kind of inner bag assembly, the structural design of this inner bag assembly effectively can increase the heat exchange area between heat exchanger tube and inner bag and reduce the cost of water heater, and second object of the present utility model is to provide a kind of water heater comprising above-mentioned inner bag assembly.
In order to reach above-mentioned first object, the utility model provides following technical scheme:
An inner bag assembly for water heater, comprise inner bag and the heat exchanger tube being wound in described inner bag outside, described heat exchanger tube is pipe;
The outer surface of described inner bag has can the groove of accommodating described heat exchanger tube, and the cross section of described groove inner wall is circular arc, and the inwall of the outer wall of described heat exchanger tube and described groove fits.
Preferably, in the inner bag assembly of above-mentioned water heater, the cross section of the inwall of described groove is minor arc.
Preferably, in the inner bag assembly of above-mentioned water heater, the right central angle of described minor arc is 140 °-150 °.
Preferably, in the inner bag assembly of above-mentioned water heater, the right central angle of described minor arc is 145 °.
Preferably, in the inner bag assembly of above-mentioned water heater, described inner bag is pipe in stainless steel, and described heat exchanger tube is copper pipe.
Preferably, in the inner bag assembly of above-mentioned water heater, the quantity of described heat exchanger tube is two, and two described heat exchanger tube wound in parallel are outside in described inner bag.
Preferably, in the inner bag assembly of above-mentioned water heater, the flow direction of the water in two described heat exchanger tubes is contrary.
A kind of water heater, comprises as the inner bag assembly according to any one of above-mentioned.
The inner bag assembly of the water heater that the utility model provides, comprise inner bag and the heat exchanger tube being wound in inner bag outside, wherein heat exchanger tube is pipe, and namely heat exchanger tube is circle along the cross section that the plane cutting perpendicular to its axis obtains.The outer surface of inner bag has can the groove of accommodating heat exchanger tube, and the cross section of groove inner wall is circular arc, namely the inwall of groove is circular arc along the figure that the plane cutting perpendicular to inner bag axis obtains, and this groove is the face surrounded with the string being connected circular arc two ends by circular arc along the cross section that the plane cutting perpendicular to inner bag axis obtains.The outer wall of heat exchanger tube and the inwall of groove fit.Namely the inwall of groove is cambered surface, and the inwall of groove is identical with the local outer wall shape of heat exchanger tube, makes the inwall of the outer wall of heat exchanger tube and groove can be bonded to each other.
If the total length of heat exchanger tube is certain and diameter is certain, in the inner bag assembly that the utility model provides, the cross section of heat exchanger tube and the contact wire of inner bag are circular arc line, in prior art, the cross section of heat exchanger tube and the contact wire of inner bag are the string being connected above-mentioned circular arc line two ends, and the length of circular arc must be greater than the length of the string connecting these circular arc two ends, and the length of heat exchanger tube is certain, therefore heat exchanger tube and inner bag contact area increase greatly in this novel inner bag assembly provided, corresponding heat exchange area increases, and improves heat exchange efficiency.When heat exchange amount one timing, heat exchanger tube use amount can be saved the while of ensureing that heat exchange area is nondecreasing, reduce the cost of water heater.
In order to reach above-mentioned second object, the utility model additionally provides a kind of water heater, and this water heater comprises any one inner bag assembly above-mentioned.Because above-mentioned inner bag assembly has above-mentioned technique effect, the water heater with this inner bag assembly also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the sectional view of inner bag assembly of the prior art;
Fig. 2 is the sectional view of heat exchanger tube of the prior art;
The partial sectional view of the inner bag assembly that Fig. 3 provides for the utility model embodiment;
The partial sectional view of the inner bag that Fig. 4 provides for the utility model embodiment;
The structural representation of the inner bag that Fig. 5 provides for the utility model embodiment;
Fig. 6 is the partial enlarged drawing of a-quadrant in Fig. 5.
In accompanying drawing, mark is as follows:
01-inner bag, 02-heat exchanger tube;
1-inner bag, 11-groove, 2-heat exchanger tube, 3-heat-insulation layer.
Detailed description of the invention
First object of the present utility model is to provide a kind of inner bag assembly, the structural design of this inner bag assembly effectively can increase the heat exchange area between heat exchanger tube and inner bag and reduce the cost of water heater, and second object of the present utility model is to provide a kind of water heater comprising above-mentioned inner bag assembly.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 3-Fig. 6, the inner bag assembly of the water heater that the utility model provides, comprise inner bag 1 and the heat exchanger tube 2 being wound in inner bag 1 outside, wherein heat exchanger tube 2 is pipe, and namely heat exchanger tube 2 is circle along the cross section that the plane cutting perpendicular to its axis obtains.The outer surface of inner bag 1 has can the groove 11 of accommodating heat exchanger tube 2, and the cross section of groove 11 inwall is circular arc, namely the inwall of groove 11 is circular arc along the figure that the plane cutting perpendicular to inner bag 1 axis obtains, and this groove 11 is the face surrounded with the string being connected circular arc two ends by circular arc along the cross section that the plane cutting perpendicular to inner bag 1 axis obtains.The outer wall of heat exchanger tube 2 and the inwall of groove 11 fit.Namely the inwall of groove 11 is cambered surface, and the inwall of groove 11 is identical with the local outer wall shape of heat exchanger tube 2, makes the inwall of the outer wall of heat exchanger tube 2 and groove 11 can be bonded to each other.
If the total length of heat exchanger tube 2 is certain and diameter is certain, in the inner bag assembly that the utility model provides, the cross section of heat exchanger tube 2 and the contact wire of inner bag 1 are circular arc line, in prior art, the cross section of heat exchanger tube 2 and the contact wire of inner bag 1 are the string being connected above-mentioned circular arc line two ends, and the length of circular arc must be greater than the length of the string connecting these circular arc two ends, and the length of heat exchanger tube 2 is certain, therefore heat exchanger tube 2 and inner bag 1 contact area increase greatly in this novel inner bag assembly provided, corresponding heat exchange area increases, and improves heat exchange efficiency.When heat exchange amount one timing, heat exchanger tube 2 use amount can be saved the while of ensureing that heat exchange area is nondecreasing, reduce the cost of water heater.
In order to ensure the intensity of inner bag 1 while increasing heat exchange area, the cross section of the inwall of groove 11 can be minor arc, and namely the inwall of groove 11 is minor arc along the figure that the plane cutting perpendicular to inner bag 1 axis obtains.The degree of depth of groove 11 like this is less, does not affect the thickness of inner bag 1, intensity and stress.Certainly, the cross section of the inwall of groove 11 also can be major arc or semi arch, in this no limit.
Further, the right central angle of above-mentioned minor arc is 140 °-150 °, and concrete can be 145 °.
Be that 145 ° and prior art compare as follows for the central angle that minor arc is right:
1) as the outer diameter D=9.52mm of heat exchanger tube 2, the height H=7.2mm in heat exchanger tube 2 cross section in prior art, the straight length L=8.2mm that heat exchanger tube 2 cross section contacts with inner bag 1;
Outer diameter D=the 9.52mm of heat exchanger tube 2, the right central angle of minor arc is 145 °, the straight length L that in the application, heat exchanger tube 2 cross section contacts with inner bag 1
1=3.14*9.52*145/360=12.04mm;
In summary, when heat exchanger tube 2 coiling length of inner bag 1 outside is consistent, heat exchange area increase about (the 12.04-8.31)/8.31=44.9% of the inner bag assembly that the application provides.
2) when heat exchange area one timing, in prior art, every platform water heater needs 40m heat exchanger tube 2, the inner bag assembly using the application to provide only needs 27.6m, 12.4m heat exchanger tube 2 saved by every platform water heater, normally used 9.52*0.6 specification heat exchange copper tube is pressed 0.15Kg/m and is calculated, unit price 50 yuan/Kg assesses, and separate unit water heater can save 12.4*0.15*50=93 unit.If when output is 100,000, adds up to save material cost year and reach 1,000 ten thousand, considerable.
Concrete Data Comparison is as shown in the table:
In addition, inner bag 1 is stainless steel inner container, and heat exchanger tube can be copper pipe, and the heat conductivility of copper pipe is better, and not easily corrosion, therefore be suitable as heat exchanger tube use.Certainly, heat exchanger tube can also be the metal tube of other material, and such as aluminum pipe is in this no limit.
The quantity of heat exchanger tube 2 can be two, and two heat exchanger tube 2 wound in parallel are outside in inner bag 1, so arrange the flow rate of hot water and flow that can control heat exchanger tube 2 inside respectively, is more convenient to the temperature controlling water in inner bag 1.Certainly, heat exchanger tube 2 can also be three, four etc., in this no limit.
Further, the flow direction of the water in two heat exchanger tubes 2 can be contrary, the water temperature in inner bag 1 so can be made more even, prevent the generation of thermograde.The flow direction of the water in certain two heat exchanger tubes 2 also can be identical, in this no limit.
In addition, the outside of inner bag and heat exchanger tube should arrange heat-insulation layer 3, and heat-insulation layer is full of between inner bag and heat exchanger tube, and concrete heat-insulation layer 3 can be polyurethane insulation coating.
Based on the inner bag assembly provided in above-described embodiment, the utility model additionally provides a kind of water heater, and this water heater comprises any one inner bag assembly in above-described embodiment.The inner bag assembly in above-described embodiment is have employed, so the beneficial effect of this water heater please refer to above-described embodiment due to this water heater.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. an inner bag assembly for water heater, comprises inner bag (1) and is wound in the outside heat exchanger tube (2) of described inner bag (1), it is characterized in that,
Described heat exchanger tube (2) is pipe;
The outer surface of described inner bag (1) has can the groove (11) of accommodating described heat exchanger tube (2), the cross section of described groove (11) inwall is circular arc, and the inwall of the outer wall of described heat exchanger tube (2) and described groove (11) fits.
2. the inner bag assembly of water heater according to claim 1, is characterized in that, the cross section of the inwall of described groove (11) is minor arc.
3. the inner bag assembly of water heater according to claim 2, is characterized in that, the right central angle of described minor arc is 140 °-150 °.
4. the inner bag assembly of water heater according to claim 3, is characterized in that, the right central angle of described minor arc is 145 °.
5. the inner bag assembly of water heater according to claim 1, is characterized in that, described inner bag (1) is stainless steel inner container, and described heat exchanger tube (2) is copper pipe.
6. the inner bag assembly of water heater according to claim 1, is characterized in that, the quantity of described heat exchanger tube (2) is two, and two described heat exchanger tube (2) wound in parallel are outside in described inner bag (1).
7. the inner bag assembly of water heater according to claim 6, is characterized in that, the flow direction of the water in two described heat exchanger tubes (2) is contrary.
8. a water heater, is characterized in that, comprises the inner bag assembly according to any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613508.4U CN204176920U (en) | 2014-10-22 | 2014-10-22 | Water heater and inner bag assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613508.4U CN204176920U (en) | 2014-10-22 | 2014-10-22 | Water heater and inner bag assembly thereof |
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| Publication Number | Publication Date |
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| CN204176920U true CN204176920U (en) | 2015-02-25 |
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| CN201420613508.4U Active CN204176920U (en) | 2014-10-22 | 2014-10-22 | Water heater and inner bag assembly thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180665A1 (en) * | 2014-05-30 | 2015-12-03 | 丹佛斯微通道换热器（嘉兴）有限公司 | Water heater and method for forming water heater |
-
2014
- 2014-10-22 CN CN201420613508.4U patent/CN204176920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180665A1 (en) * | 2014-05-30 | 2015-12-03 | 丹佛斯微通道换热器（嘉兴）有限公司 | Water heater and method for forming water heater |
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