CN206572744U - A kind of low flow velocity electric heater - Google Patents
A kind of low flow velocity electric heater Download PDFInfo
- Publication number
- CN206572744U CN206572744U CN201720176161.5U CN201720176161U CN206572744U CN 206572744 U CN206572744 U CN 206572744U CN 201720176161 U CN201720176161 U CN 201720176161U CN 206572744 U CN206572744 U CN 206572744U
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- electric heating
- tube
- shell
- tank
- outer tube
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The utility model discloses a kind of low flow velocity electric heater, including medium entrance, shell of tank, media outlet and terminal box, the medium entrance, media outlet are respectively positioned on the top of shell of tank, and media outlet is close to terminal box side, multiple electric heating tubes are fixed with the shell of tank, and power-supply device is electrically connected with one end of electric heating tube and terminal box, outer tube tube sheet is installed close to the side of media outlet, dividing plate is provided between the heater tube sheet flange and outer tube tube sheet.The utility model is simple in construction, and velocity of medium is improved by rationally designing the actual internal area between electric heating tube and outer tube, reaches the effect for improving film coefficient of heat transfer；Cold medium is fully carried out heat exchange with electric heating element outer tube by central dividing plate, effectively reduction electric heating tube surface temperature, so as to improve service life, and obtain relatively low vessel surface temperature, eliminate insulation, reduce equipment cost.
Description
Technical field
The utility model is related to a kind of electric heater, specifically a kind of low flow velocity electric heater.
Background technology
Electric heater for fluid is the equipment that temperature is passed to fluid by electrothermal tube, when the flow velocity for running into fluid is too low
When, heat-transfer capability declines, and the inhomogeneities in temperature field is also than larger, and usual solution is the number using increase electrothermal tube
Amount, can so lead the thermal losses increase of control equipment cost, equipment volume, equipment, while general electric heater for fluid device external
Need insulation.
Utility model content
The purpose of this utility model is to provide that a kind of heat transfer efficiency is high, the low flow velocity electric heater of service life length, with
The problem of solving to propose in above-mentioned background technology.
To achieve the above object, the utility model provides following technical scheme：
A kind of low flow velocity electric heater, including medium entrance, shell of tank, media outlet and terminal box, the medium enter
Mouth, media outlet are respectively positioned on the top of shell of tank, and media outlet fixation in terminal box side, the shell of tank is set
There is power-supply device in multiple electric heating tubes, and one end of electric heating tube and terminal box to be electrically connected with, close to the side of media outlet
Outer tube tube sheet is installed, dividing plate is provided between the heater tube sheet flange and outer tube tube sheet.
It is used as further program of the utility model：Multiple deflection plates are provided between the shell of tank and electric heating tube,
And deflection plate uniform intervals are set, and electric heater inner chamber is separated into multiple passages by deflection plate.
It is used as further program of the utility model：Electric heating element outer tube and electric heating tube are cased with the electric heating tube
With being above cased with leaving gap between electric heating element outer tube.
It is used as further program of the utility model：The shell of tank side uses heater tube sheet flange seal.
It is used as further program of the utility model：The dividing plate separates two ports of electric heating element outer tube,
Respectively import, outlet.
Compared with prior art, the beneficial effects of the utility model are：
The utility model is simple in construction, and Jie is improved by rationally designing the actual internal area between electric heating tube and outer tube
Mass flow speed, reaches the effect for improving film coefficient of heat transfer；Cold medium can carry out heat exchange with electric heating element overcoat, can effectively drop
Low electric heating tube surface temperature, so as to improve service life, while relatively low vessel surface temperature can also be obtained, can be saved
Insulation reduces insulation thickness, reduces equipment cost；Simultaneously by central dividing plate by two ports of electric heating element outer tube
Separate, enter one and improve flow velocity, realize the purpose for improving film coefficient of heat transfer.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- medium entrances, 2- shell of tanks, 3- deflection plates, 4- electric heating elements outer tube, 5- electric heating tubes, outside 6-
Sleeve pipe tube sheet, 7- media outlets, 8- dividing plates, 9- heater tube sheets flange, 10- terminal boxes.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Referring to Fig. 1, a kind of low flow velocity electric heater, including medium entrance 1, shell of tank 2, media outlet 7 and wiring
Box 10, the medium entrance 1, media outlet 7 are respectively positioned on the top of shell of tank 2, and media outlet 7 is close to terminal box 10 1
Multiple electric heating tubes 5, and one end and the power-supply device in terminal box 10 of electric heating tube 5 are fixed with side, the shell of tank 2
It is electrically connected with, outer tube tube sheet 6, the heater tube sheet flange 9 and outer tube tube sheet 6 is installed close to the side of media outlet 7
Between be provided with dividing plate 8.Preferably：There are multiple deflection plates 3 between the shell of tank 2 and electric heating tube 5, and deflection plate 3 is uniform
It is arranged at intervals, and electric heater inner chamber is separated into multiple passages, the time of contact of increase fluid and electric heating tube 5 by deflection plate 3.
Preferably：Electric heating element outer tube 4 and electric heating tube 5 are cased with the electric heating tube 5 and be above cased with electric heating element outer tube 4 it
Between leave gap.Preferably：The side of shell of tank 2 is sealed using heater tube sheet flange 9.Preferably：The dividing plate 8 will
Two ports of electric heating element outer tube 4 are separated, respectively inlet and outlet.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
, can also be on the premise of this patent objective not be departed from formula, the knowledge that one skilled in the relevant art possesses
Various changes can be made.
Claims (5)
1. a kind of low flow velocity electric heater, including medium entrance（1）, shell of tank（2）, media outlet（7）And terminal box（10）,
Characterized in that, the medium entrance（1）, media outlet（7）It is respectively positioned on shell of tank（2）Top, and media outlet（7）Lean on
Proximity line box（10）Side, the shell of tank（2）Inside it is fixed with multiple electric heating tubes（5）, and electric heating tube（5）One end
With terminal box（10）Middle power-supply device is electrically connected with, close to media outlet（7）Side install outer tube tube sheet（6）, it is described to add
Hot device tube sheet flange（9）With outer tube tube sheet（6）Between be provided with dividing plate（8）.
2. low flow velocity electric heater according to claim 1, it is characterised in that the shell of tank（2）With electric heating tube
（5）Between be provided with multiple deflection plates（3）, and deflection plate（3）Uniform intervals are set, and electric heater inner chamber is by deflection plate（3）Point
It is divided into multiple passages.
3. low flow velocity electric heater according to claim 1, it is characterised in that the electric heating tube（5）On be cased with electric heating
Element outer tube（4）And electric heating tube（5）With being above cased with electric heating element outer tube（4）Between leave gap.
4. low flow velocity electric heater according to claim 1, it is characterised in that the shell of tank（2）Side, which is used, to be added
Hot device tube sheet flange（9）Sealing.
5. low flow velocity electric heater according to claim 1, it is characterised in that the dividing plate（8）By electric heating element overcoat
Pipe（4）Two ports separate, respectively inlet and outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176161.5U CN206572744U (en) | 2017-02-27 | 2017-02-27 | A kind of low flow velocity electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176161.5U CN206572744U (en) | 2017-02-27 | 2017-02-27 | A kind of low flow velocity electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206572744U true CN206572744U (en) | 2017-10-20 |
Family
ID=60058645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720176161.5U Active CN206572744U (en) | 2017-02-27 | 2017-02-27 | A kind of low flow velocity electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206572744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871427A (en) * | 2017-02-27 | 2017-06-20 | 无锡恒业电热电器有限公司 | A kind of low flow velocity electric heater |
-
2017
- 2017-02-27 CN CN201720176161.5U patent/CN206572744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871427A (en) * | 2017-02-27 | 2017-06-20 | 无锡恒业电热电器有限公司 | A kind of low flow velocity electric heater |
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