CN215175993U - Tubular short-circuit heater - Google Patents
Tubular short-circuit heater Download PDFInfo
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- CN215175993U CN215175993U CN202121609112.9U CN202121609112U CN215175993U CN 215175993 U CN215175993 U CN 215175993U CN 202121609112 U CN202121609112 U CN 202121609112U CN 215175993 U CN215175993 U CN 215175993U
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- medium
- barrel
- tail end
- outer barrel
- electric heating
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Tubular short circuit heater relates to heater technical field. The tail end of the inner barrel and the tail end of the outer barrel are hermetically connected with a tail end cover, the tail end of the inner barrel is hermetically connected with the inner wall of the outer barrel through an annular seat, a medium backflow cavity is formed between the tail end cover of the inner barrel and the tail end of the outer barrel, a medium circulation cavity communicated with the medium backflow cavity is formed between the side walls of the inner barrel and the outer barrel, the head end of the outer barrel is connected with a medium inlet communicated with the medium circulation cavity, the head end of the inner barrel is an opening and used as a medium outlet, and the medium outlet end of the inner barrel extends outwards out of the head end of the outer barrel and is hermetically connected with the outer barrel; a plurality of hollow electric heating tubes are arranged in the inner cylinder body through a supporting plate. The utility model discloses a hollow electrothermal tube, heat transfer medium realize the heat transfer in directly getting into hollow electrothermal tube, and the thermal inertia of heating is little, and the programming rate is fast, and the cooling rate is fast.
Description
Technical Field
The utility model relates to a heater technical field specifically is a tubulose short circuit heater.
Background
The existing product is a stable magnesium oxide heating element, the common magnesium oxide heating element can only heat a medium heater to the upper limit of 700 ℃, the medium exceeds 700 ℃, the heating element can reach about 800 ℃, the insulation of magnesium oxide is sharply reduced above 800 ℃, even is close to 0, and therefore 700 ℃ is a threshold.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tubulose short circuit heater can effectively solve the problem among the background art.
The technical scheme for realizing the purpose is as follows: tubular short circuit heater, its characterized in that: the tail end of the inner barrel and the tail end of the outer barrel are hermetically connected with a tail end cover, the tail end of the inner barrel is hermetically connected with the inner wall of the outer barrel through an annular seat, a medium backflow cavity is formed between the tail end cover of the inner barrel and the tail end of the outer barrel, a medium circulation cavity is formed between the inner barrel and the outer barrel, the medium backflow cavity is communicated with the side wall of the medium circulation cavity, the head end of the outer barrel is connected with a medium inlet communicated with the medium circulation cavity, the head end of the inner barrel is provided with an opening as a medium outlet, and the medium outlet end of the inner barrel extends out of the head end of the outer barrel and is hermetically connected with the head end of the outer barrel;
the inner barrel is internally provided with a plurality of hollow electric heating tubes through a supporting plate, the hollow electric heating tubes are mutually connected in series, the outer barrel is provided with binding posts which are electrically connected with two ends of the hollow electric heating tubes after being connected in series, one end of each hollow electric heating tube extends into the medium backflow cavity and is hermetically connected with the tail end cover of the inner barrel, and the other end of each hollow electric heating tube is close to the medium outlet.
Furthermore, the annular seat is uniformly provided with flow-adjusting holes along the circumferential direction, so that the medium backflow cavity is communicated with the medium circulation cavity.
Further, the medium inlet is arranged towards one side of the outer cylinder body.
Furthermore, a plurality of supporting plates are arranged in the inner barrel at intervals, the electric heating tubes sequentially penetrate through the supporting plates respectively, a ceramic sleeve is arranged between the electric heating tubes and the supporting plates, one end of the ceramic sleeve is limited through a flange, and the other end of the ceramic sleeve is connected with a clamp spring.
Furthermore, the material of the hollow electrothermal tube is GH 3030.
Further, the ceramic sleeve is made of alumina ceramic or boron nitride material.
Furthermore, the hollow electrothermal tubes are electrically connected through a bending electric connector.
Further, the bottom of the outer cylinder body is connected with a sewage discharge pipe.
The utility model has the advantages that:
1) the utility model discloses a hollow electrothermal tube, heat transfer medium directly get into and realize the heat transfer in the hollow electrothermal tube, and the thermal inertia of heating is little, and the programming rate is fast, and the cooling rate is fast to adopt GH3030 material, consequently can the heating of medium more than 700 ℃.
2) The heating body is in a hollow tubular shape, so that the circulation space of the medium is limited, and the heat exchange is good.
3) Because the heat exchange is good, the material is greatly reduced, the structure is compact, the weight is light, and the cost is low.
4) The hollow electric heating tubes are connected through the bending pieces, so that thermal expansion fracture is avoided.
5) The ceramic support is adopted between the hollow heating pipe and the support plate, so that the insulation problem is solved.
6) The medium inlet is arranged at one side of the outer barrel in a deviation manner, the flow direction of the gas medium at the inlet is changed, the gas medium is enabled to advance spirally, the centrifugal function is achieved, moisture can be centrifuged on the wall of the outer barrel, the water is prevented from entering the hollow electric heating tube, the direction of the gas flow is changed, the flow direction of the medium is changed, and the medium can enter the hollow electric heating tube more uniformly.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 3 is a schematic structural view showing the state of the hollow electrothermal tube in cooperation with the supporting plate;
FIG. 4 is a schematic view of the connection structure of hollow electrothermal tubes via bending electrical connectors.
Detailed Description
As shown in figures 1-4, the utility model comprises an inner cylinder body 1 and an outer cylinder body 2 which are coaxially arranged, the inner cylinder body 1 is arranged in the outer cylinder body 2, the tail ends of the inner cylinder body 1 and the outer cylinder body 2 are hermetically connected with a tail end cover 3, the tail end of the inner cylinder body 1 is hermetically connected with the inner wall of the outer cylinder body 1 through an annular seat 4, a medium backflow cavity 5 is formed between the tail end of the inner cylinder body 1 and the tail end of the outer cylinder body 2 and between the annular seat 4 and the annular seat 4, a medium circulation cavity 6 is formed between the side walls of the inner cylinder body 1 and the outer cylinder body 2, the bottom of the medium circulation cavity 6 is provided with a drain outlet 17, the annular seat 4 is circumferentially and uniformly provided with a rectification hole 16, so that the medium backflow cavity 5 is communicated with the medium circulation cavity 6, the head end of the outer cylinder body 2 is connected with a medium inlet 7 communicated with the medium circulation cavity 6, the medium inlet 7 is arranged at one side of the outer cylinder body 1 along the radial direction, the head end of the inner cylinder body 1 is an opening as a medium outlet 8, the medium outlet end of the inner cylinder 1 extends out of the head end of the outer cylinder 1 and is connected with the head end of the outer cylinder 2 in a sealing way.
A plurality of hollow electric heating tubes 9 are installed in the inner barrel 1 through a supporting plate 8, the supporting plate 8 is provided with a plurality of hollow electric heating tubes which are arranged at intervals, the hollow electric heating tubes 9 are mutually connected in series through a bending electric connector 10, wiring terminals 11 which are electrically connected with two ends of the hollow electric heating tubes 9 after being connected in series are arranged on the outer barrel 2, one ends of the hollow electric heating tubes 9 extend into the medium backflow cavity 6 and are hermetically connected with the tail end cover 3 of the inner barrel 1, and the other ends of the hollow electric heating tubes are close to the medium outlet 8.
A plurality of supporting plates 12 are arranged in the inner barrel 1 at intervals, the hollow electric heating tube 9 sequentially penetrates through the supporting plates 11, a ceramic bushing 13 is arranged between the hollow electric heating tube 9 and the supporting plates 12, the ceramic bushing 13 is made of alumina ceramics or boron nitride materials, one end of the ceramic bushing 13 is limited by a flange 15, and the other end of the ceramic bushing is connected with a snap spring 14.
The utility model discloses a working process:
the hollow electric heating tube 9 is electrified for heating, a heat exchange medium enters from the medium inlet 7 and spirally advances (because the medium inlet 7 is arranged at one side of the outer cylinder body 1 in a deviation way), so that moisture in the medium can be centrifuged on the wall of the outer cylinder body 2, the centrifuged drying medium enters the hollow electric heating tube 9 for heat exchange through the medium reflux cavity 5 after being rectified by the rectifying holes, and then is output from the medium outlet 8.
Claims (8)
1. Tubular short circuit heater, its characterized in that: the tail end of the inner barrel and the tail end of the outer barrel are hermetically connected with a tail end cover, the tail end of the inner barrel is hermetically connected with the inner wall of the outer barrel through an annular seat, a medium backflow cavity is formed between the tail end cover of the inner barrel and the tail end of the outer barrel, a medium circulation cavity is formed between the side walls of the inner barrel and the outer barrel, the medium backflow cavity and the medium circulation cavity are mutually communicated, the head end of the outer barrel is connected with a medium inlet communicated with the medium circulation cavity, the head end of the inner barrel is an opening and serves as a medium outlet, and the medium outlet end of the inner barrel extends out of the head end of the outer barrel and is hermetically connected with the head end of the outer barrel;
the inner barrel is internally provided with a plurality of hollow electric heating tubes through a supporting plate, the hollow electric heating tubes are mutually connected in series, the outer barrel is provided with binding posts which are electrically connected with two ends of the hollow electric heating tubes after being connected in series, one end of each hollow electric heating tube extends into the medium backflow cavity and is hermetically connected with the tail end cover of the inner barrel, and the other end of each hollow electric heating tube is close to the medium outlet.
2. The tubular short circuit heater according to claim 1, wherein: the annular seat is uniformly provided with flow regulating holes along the circumferential direction, so that the medium backflow cavity is communicated with the medium circulation cavity.
3. The tubular short circuit heater according to claim 1, wherein: the medium inlet is arranged by deviating to one side of the outer cylinder body.
4. The tubular short circuit heater according to claim 1, wherein: the inner barrel is internally provided with a plurality of supporting plates at intervals, the electric heating tubes sequentially penetrate the supporting plates respectively, a ceramic sleeve is arranged between the electric heating tubes and the supporting plates, one end of the ceramic sleeve is limited by a flange, and the other end of the ceramic sleeve is connected with a clamp spring.
5. The tubular short circuit heater according to claim 1, wherein: the hollow electric heating tube is made of GH 3030.
6. The tubular short circuit heater according to claim 4, wherein: the ceramic sleeve is made of alumina ceramic or boron nitride material.
7. The tubular short circuit heater according to claim 1, wherein: the hollow electric heating tubes are electrically connected through a bending electric connector.
8. The tubular short circuit heater according to claim 1, wherein: the bottom of the outer cylinder body is connected with a sewage discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121609112.9U CN215175993U (en) | 2021-07-15 | 2021-07-15 | Tubular short-circuit heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121609112.9U CN215175993U (en) | 2021-07-15 | 2021-07-15 | Tubular short-circuit heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215175993U true CN215175993U (en) | 2021-12-14 |
Family
ID=79395138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121609112.9U Active CN215175993U (en) | 2021-07-15 | 2021-07-15 | Tubular short-circuit heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215175993U (en) |
-
2021
- 2021-07-15 CN CN202121609112.9U patent/CN215175993U/en active Active
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