CN204630074U - Efficient electric heater - Google Patents
Efficient electric heater Download PDFInfo
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- CN204630074U CN204630074U CN201520291634.7U CN201520291634U CN204630074U CN 204630074 U CN204630074 U CN 204630074U CN 201520291634 U CN201520291634 U CN 201520291634U CN 204630074 U CN204630074 U CN 204630074U
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Abstract
The utility model relates to industrial process electric-heating technology field, especially a kind of efficient electric heater.Comprise housing, described housing cavity is separated into some unit cavitys, described unit cavity is provided with fluid passage, and it is through with an adjacent cells cavity, first unit cavity wherein along flow direction is provided with inlet, last unit cavity is provided with liquid outlet, is also provided with unit electric heating tube in described unit cavity.Preferably, the power of the unit electric heating tube in described unit cavity reduces successively along flow direction.Preferably, the fluid passage on described adjacent two through unit cavitys lays respectively at the two ends of unit cavity.The utility model extends the distance that fluid flows in enclosure interior, improves the flow velocity of fluid in rotatable heater housing, thus can increase the heat exchanger effectiveness between fluid and heat exchanger tube, reduce the surface temperature of electrothermal tube.
Description
Technical field
The utility model relates to industrial process electric-heating technology field, especially a kind of electric heater.
Background technology
Existing electric heater often adopts the structure of circulation heater, is a kind ofly to insert boundling electrothermal tube structure with in the container of import and export.Fluid and cluster type electrothermal tube carry out heat exchange and reach gas by the object heated.The major defect of this structure is that container medium flow velocity is low, and the coefficient of heat transfer on fluid and heat exchanger tube surface is low, causes electrothermal tube surface temperature very high, easily burns out electrothermal tube.Connect as adopted multiple container and heat, container cost is high, and Pressure Drop is large, and the multiple container of same employing, area of dissipation is large, and the thermal efficiency is low.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electric heater, has the coefficient of heat transfer high, the feature of long service life.
In order to solve the problems of the technologies described above, the utility model comprises housing, described housing cavity is separated into some unit cavitys, described unit cavity is provided with fluid passage, and it is through with an adjacent cells cavity, first unit cavity wherein along flow direction is provided with inlet, and last unit cavity is provided with liquid outlet, is also provided with unit electric heating tube in described unit cavity.
Preferably, the power of the unit electric heating tube in described unit cavity reduces successively along flow direction.
Preferably, the fluid passage on described adjacent two through unit cavitys lays respectively at the two ends of unit cavity.
Further, the body of described unit electric heating tube is provided with temperature sensor, and described temperature sensor is connected with temperature controller.
The utility model is by multiple unit cavity in the separation of the housing cavity of electric heater, each unit cavity and an adjacent cells cavity through, thus extend the distance that fluid flows in enclosure interior, under the condition that feed liquor flow is certain, in in unit cavity, the flow velocity of fluid must be greater than the flow velocity in existing rotatable heater housing, thus the heat exchanger effectiveness that can increase between fluid and heat exchanger tube, reduce the surface temperature of electrothermal tube.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sectional drawing of the present utility model.
Detailed description of the invention
Embodiment cited by the utility model; just understand the utility model for helping; should not be construed as the restriction to the utility model protection domain; for those skilled in the art; under the prerequisite not departing from the utility model thought; can also improve the utility model and modify, these improve and modification also falls in the scope of the utility model claim protection.
As depicted in figs. 1 and 2, the utility model comprises housing 1, and for holding the fluid carrying out heat exchange, fluid flows in the housing and realizes the heat exchange with electrothermal tube.Unlike the prior art, housing 1 inner chamber described in the utility model becomes 4 unit cavitys 2 by baffle for separating, is provided with unit electric heating tube 6 in each unit cavity 2, and described unit electric heating tube 6 is connected with the anti-explosion terminal box on housing by wire.
Each unit cavity 2 is provided with fluid passage 3, and it is through with one of them adjacent cells cavity 2, fluid passage 3 on described adjacent two through unit cavitys 2 lays respectively at the two ends of unit cavity, such enclosure interior just defines the unit cavity 2 of 4 series connection, fluid flow distance in the housing is also 4 times of prior art, in order to the turnover of fluid, be wherein provided with inlet 4 along on first unit cavity of flow direction, last unit cavity is provided with liquid outlet 5.
Because the temperature of fluid is more and more higher along flow direction, in order to avoid the surface temperature of each electric heating tube is uneven, heat exchanger effectiveness is caused to reduce, and it is too high near unit electric heating tube 6 surface temperature of fluid flow direction end, affect the service life of electric heater, the power of the unit electric heating tube 6 in described unit cavity 2 reduces successively along flow direction.The surface temperature of electric heating tube so just can be made basically identical.Certainly, in order to the surface temperature of precision controlling electrothermal tube, all right set temperature sensor on the body of described unit electric heating tube 6, described temperature sensor is connected with temperature controller.
The utility model extends fluid flow distance within the case 1, accelerate the flowing velocity of fluid, the coefficient of heat transfer of electric heater can be improved, and by the power of unit electrothermal tube is reduced successively along flow direction, can keep electric heating tube surface temperature in each unit cavity always, improve heat exchanger effectiveness, and extend the service life of electric heater.
Claims (4)
1. efficient electric heater, comprise housing (1), it is characterized in that, described housing (1) inner chamber is separated into some unit cavitys (2), described unit cavity is provided with fluid passage (3), and through with an adjacent cells cavity, and first unit cavity wherein along flow direction is provided with inlet (4), last unit cavity is provided with liquid outlet (5), is also provided with unit electric heating tube (6) in described unit cavity.
2. efficient electric heater according to claim 1, is characterized in that, the power of the unit electric heating tube (6) in described unit cavity (2) reduces successively along flow direction.
3. efficient electric heater according to claim 1 and 2, is characterized in that, the fluid passage (3) on described adjacent two through unit cavitys (2) lays respectively at the two ends of unit cavity.
4. efficient electric heater according to claim 3, is characterized in that, the body of described unit electric heating tube (6) is provided with temperature sensor, and described temperature sensor is connected with temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291634.7U CN204630074U (en) | 2015-05-07 | 2015-05-07 | Efficient electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291634.7U CN204630074U (en) | 2015-05-07 | 2015-05-07 | Efficient electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204630074U true CN204630074U (en) | 2015-09-09 |
Family
ID=54049092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520291634.7U Active CN204630074U (en) | 2015-05-07 | 2015-05-07 | Efficient electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204630074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807190A (en) * | 2015-05-07 | 2015-07-29 | 华能无锡电热器材有限公司 | High-efficiency electric heater |
-
2015
- 2015-05-07 CN CN201520291634.7U patent/CN204630074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807190A (en) * | 2015-05-07 | 2015-07-29 | 华能无锡电热器材有限公司 | High-efficiency electric heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |