CN107124779A - Electrically heated rod - Google Patents
Electrically heated rod Download PDFInfo
- Publication number
- CN107124779A CN107124779A CN201710470190.7A CN201710470190A CN107124779A CN 107124779 A CN107124779 A CN 107124779A CN 201710470190 A CN201710470190 A CN 201710470190A CN 107124779 A CN107124779 A CN 107124779A
- Authority
- CN
- China
- Prior art keywords
- heating
- fin
- electrically heated
- rod
- heating fin
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000003416 augmentation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- FKLFBQCQQYDUAM-UHFFFAOYSA-N fenpiclonil Chemical compound ClC1=CC=CC(C=2C(=CNC=2)C#N)=C1Cl FKLFBQCQQYDUAM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/021—Heaters specially adapted for heating liquids
Landscapes
- Resistance Heating (AREA)
Abstract
The invention discloses a kind of electrically heated rod, it is related to heater technical field.The heating rod includes heating rod body, includes the heating fin for being welded on the heating rod body peripheral at interval, and the heating fin includes left heating fin and right heating fin, and the inner side of the left heating fin and right heating fin is not contacted with each other.The electrically heated rod is by increasing the contact area that heating fin improves electric heater and water in the periphery of heating rod body, so that there is provided the efficiency of heating surface of the heating rod.
Description
Technical field
The present invention relates to heater technical field, more particularly to a kind of high electrically heated rod of efficiency of heating surface.
Background technology
The electrically heated rod mainly sold in the market is light pipe type electrically heated rod, and light pipe portion is that pure resistance work is former
Reason.During its work, pass to electric current, the heating of its light pipe portion, to heat water, but light pipe directly heat with the contact area of water compared with
Small, the efficiency of heating surface is low.
The content of the invention
The technical problems to be solved by the invention are how to provide a kind of efficiency of heating surface high point heating rod.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of electrically heated rod, including heating rod sheet
Body, it is characterised in that：Also include the heating fin for being welded on the heating rod body peripheral at interval.
Further technical scheme is：The heating fin is monoblock type or split type.
Further technical scheme is：The heating fin includes left heating fin and right heating fin, and the left side adds
The inner side of hot fin and right heating fin is not contacted with each other.
Further technical scheme is：The surface of the heating fin is roughness.
Further technical scheme is：The front and rear surfaces of the heating fin are provided with the heated beam stretched out.
It is using the beneficial effect produced by above-mentioned technical proposal：The electrically heated rod passes through in the outer of heating rod body
Zhou Zengjia heating fins improve the contact area of electric heater and water, so that there is provided the efficiency of heating surface of the heating rod.In addition,
The heating fin of the electrically heated rod can be rough shape, can also set outside in the front and rear surfaces of heating fin
The heated beam of extension, can further increase the contact area of electric heater and water, further improve the electric heater
The efficiency of heating surface.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of electrically heated rod described in the embodiment of the present invention；
Fig. 2 is a kind of main structure diagram for heating fin in electrically heated rod described in the embodiment of the present invention；
Fig. 3 is the side structure schematic view that fin is heated described in Fig. 2；
Wherein：1st, heating rod body 2, heating fin 21, left heating fin 22, right heating fin 23, heated beam.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
As shown in figure 1, the embodiment of the invention discloses a kind of electrically heated rod, including heating rod body 1, in addition to interval
The heating fin 2 of the periphery of heating rod body 1 is welded on, heating fin 2 is not limited herein with heating the distance between fin 2
Fixed, those skilled in the art can carry out appropriate according to actual conditions.Heating rod body 1 and heating fin in the electrically heated rod
Between piece 2 can by being integrally formed making, certainly between the two can also split set, then again pass through welding or clamping connect
It is connected to together.
The electrically heated rod improves contact of the electric heater with water by increasing heating fin in the periphery of heating rod body
Area, so that there is provided the efficiency of heating surface of the heating rod.
The heating fin 2 is monoblock type or split type.As shown in figure 1, the heating fin 2 is split type, including a left side
Fin 21 and right heating fin 22 are heated, the left heating fin 21 and the right inner side for heating fin 22 are not contacted with each other, both
Between be formed with gap, the width those skilled in the art in gap can be configured according to actual conditions, will not be described here.
The concrete form of the heating fin preferably can be following two：The first：The surface of the heating fin 2 is
Roughness.Second：As shown in Fig. 2-Fig. 3, the front and rear surfaces of the heating fin 2 are provided with the heated beam stretched out
23.Both the above concrete form can further increase the contact area of electric heater and water, further improve the electricity and add
The efficiency of heating surface of hot device.
Simulated experiment：
Experimental principle
Q=Q1+Q2 (1)
Q=P*T (2)
Q1=cm* Δs t (3)
The electric energy that Q is consumed by electrically heated rod in formula, P is the power of electrically heated rod, and T is the electrically heated rod working time；Q1
The heat absorbed for working medium, for a certain specific working medium, it is definite value；Q2To be lost to the heat in environment, in identical
Under the conditions of, the heat time is shorter, and the heat being lost in environment is fewer, so that it is fewer to consume energy.
By taking the water of boiled 30 DEG C of a kettle as an example, water is from 30 DEG C to boiling, and water needs the heat Q absorbed during this1It is certain
, if needing the time heated to be five minutes using common electrically heated rod, if using H type electrically heated rods, it can be heated
Time shortens, namely Q2It can reduce, then just reached the purpose of energy-conservation.
Numerical simulation and boundary condition setting：Light pipe type electrically heated rod and H type fins are set up by gambit softwares
The numerical model of pipe electrically heated rod, grid division is imported and calculated in fluent.It is simulated in the same terms using fluent
Under heat transfer process.Numerical simulation uses Realizable k- ε turbulence models, and the solid coupled modes type of stream is calculated, second order pressure
Difference is mended, and discrete equation is Quick forms.Entrance is speed entry condition, is exported as pressure export condition, gas phase flow field is in wall
Place is using without slip boundary condition.
The a diameter of 38mm of base tube of light pipe electrically heated rod, length is 100mm；H type extended surface tube electrically heated rods physical dimension is such as
Shown in table 1.
Table 1 tests H type extended surface tube basic sizes, unit：mm
Experimental result and analysis
The heat exchange amount of table 2 is contrasted
| Project | Heat exchange amount/w |
| Light pipe electrically heated rod | 57.06 |
| H type extended surface tube electrical heating | 182.27 |
Under the same conditions, the electrically heated heat exchange amount of H types extended surface tube exceeds well over light pipe electrically heated rod, up to three times.Pass through
Install H type extended surface tubes additional, reach the purpose of augmentation of heat transfer.If in life, advocating use H type extended surface tube electrical heating energetically
Rod, then can save substantial amounts of electric energy, meet the great strategy of national energy-saving consumption reduction.
To sum up, the electrically heated rod is a kind of electrically heated rod for improving expanded type heating surface, and it heats the recessed of fin surface
Convex not flat structure (or groove structure), eliminates heat exchange area of the part in heating fin surface import and afterbody Disengagement zone,
The influence of import and afterbody Disengagement zone heat transfer deterioration to whole heating fin heat transfer is reduced, so as to improve the flat of heating fin
Equal convection transfer rate and fin efficiency, reach the purpose of augmentation of heat transfer.Added by welding (H types) on light pipe type electrically heated rod
Hot fin, substantially increases the heat transfer effect of electrically heated rod, has saved electric energy.Furthermore, it is possible to the H types that selection is welded as needed
Extended surface tube physical dimension, to reach optimal heat transfer effect.
Claims (5)
1. a kind of electrically heated rod, including heating rod body (1), it is characterised in that：Also include interval is welded on the heating rod
The heating fin (2) of body (1) periphery.
2. electrically heated rod as claimed in claim 1, it is characterised in that：The heating fin (2) is monoblock type or split type.
3. electrically heated rod as claimed in claim 1, it is characterised in that：The heating fin (2) includes left heating fin (21)
With right heating fin (22), the inner side of the left heating fin (21) and right heating fin (22) is not contacted with each other.
4. electrically heated rod as claimed in claim 1, it is characterised in that：The surface of the heating fin (2) is roughness.
5. electrically heated rod as claimed in claim 1, it is characterised in that：The front and rear surfaces of the heating fin (2) are provided with outside
The heated beam (23) of extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470190.7A CN107124779A (en) | 2017-06-20 | 2017-06-20 | Electrically heated rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470190.7A CN107124779A (en) | 2017-06-20 | 2017-06-20 | Electrically heated rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107124779A true CN107124779A (en) | 2017-09-01 |
Family
ID=59719099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710470190.7A Pending CN107124779A (en) | 2017-06-20 | 2017-06-20 | Electrically heated rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107124779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108522410A (en) * | 2018-07-16 | 2018-09-14 | 伊婕 | A kind of box for breeding constant temperature oxygen-increasing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2833887Y (en) * | 2005-05-16 | 2006-11-01 | 杨开艳 | Fin structure improvement of radiator |
| CN201152714Y (en) * | 2007-09-07 | 2008-11-19 | 牛明理 | Fin construction of radiator |
| CN202133317U (en) * | 2011-06-09 | 2012-02-01 | 东方日立锅炉有限公司 | H-shaped fin for fin tube heat exchanger |
| CN202485527U (en) * | 2012-03-16 | 2012-10-10 | 东方日立锅炉有限公司 | H-shaped finned tube |
| CN207011015U (en) * | 2017-06-20 | 2018-02-13 | 华北电力大学（保定） | Electrically heated rod |
-
2017
- 2017-06-20 CN CN201710470190.7A patent/CN107124779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2833887Y (en) * | 2005-05-16 | 2006-11-01 | 杨开艳 | Fin structure improvement of radiator |
| CN201152714Y (en) * | 2007-09-07 | 2008-11-19 | 牛明理 | Fin construction of radiator |
| CN202133317U (en) * | 2011-06-09 | 2012-02-01 | 东方日立锅炉有限公司 | H-shaped fin for fin tube heat exchanger |
| CN202485527U (en) * | 2012-03-16 | 2012-10-10 | 东方日立锅炉有限公司 | H-shaped finned tube |
| CN207011015U (en) * | 2017-06-20 | 2018-02-13 | 华北电力大学（保定） | Electrically heated rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108522410A (en) * | 2018-07-16 | 2018-09-14 | 伊婕 | A kind of box for breeding constant temperature oxygen-increasing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |
|
| WD01 | Invention patent application deemed withdrawn after publication |