CN214841129U - Radiation heater - Google Patents
Radiation heater Download PDFInfo
- Publication number
- CN214841129U CN214841129U CN202120753243.8U CN202120753243U CN214841129U CN 214841129 U CN214841129 U CN 214841129U CN 202120753243 U CN202120753243 U CN 202120753243U CN 214841129 U CN214841129 U CN 214841129U
- Authority
- CN
- China
- Prior art keywords
- combustion
- burner
- air
- air inlet
- radiant heater
- 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.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 title abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 238000009423 ventilation Methods 0.000 claims 7
- 239000005995 Aluminium silicate Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims 1
- 229910000323 aluminium silicate Inorganic materials 0.000 claims 1
- 235000012211 aluminium silicate Nutrition 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 2
- 229910000680 Aluminized steel Inorganic materials 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The utility model relates to the technical field of heating equipment, in particular to a radiant heater, which comprises an outer air inlet cover and an inner reflecting cover, wherein the outer air inlet cover spans over the inner reflecting cover, and an air passage for air circulation is reserved between the inner reflecting cover and the outer reflecting cover; the inner cavity of the inner reflecting cover is provided with a combustion pipe, and one end of the combustion pipe is connected with a burner; and a combustion-supporting air inlet pipe is arranged in the air passage, and one end of the combustion-supporting air inlet pipe is connected with the combustion-supporting branch of the burner. The utility model provides an among the prior art radiation heater the heating in-process convection heat loss great, the lower problem of heating efficiency, it is little to provide a convection loss, and is more energy-conserving, the higher radiation heater of heating efficiency.
Description
Technical Field
The utility model relates to a heating equipment technical field, concretely relates to radiation heater.
Background
Because the space of the industrial factory building is large, hot air moves upwards, heating is always a difficult problem, the overall heating cost is too high, the labor force is not large in modern factory buildings, a plurality of workshops only need to be heated in different areas according to working hours and stations, and the adoption of gas far infrared radiation is an ideal choice. The structure form of the single-body type radiation heater is a tube sheet type. The heating power of the burner is below 50KW, and the length of the radiant tube is below 15 m. Because the smoke exhaust fan of the heater is arranged on one side of the combustion chamber of the combustor to provide fresh combustion air and smoke exhaust pressure, the temperature near the combustion chamber is higher, about 500 ℃, the surface glows, and the temperature is rapidly decreased along the length direction of the radiant tube, so that the heater can be used for industrial heating occasions with different regions and different time periods. In the whole heating process of the existing single type radiation heater, the radiation heater is basically not contacted with an external object, and the conduction heat loss does not exist, so that the radiation efficiency is improved, namely the convection heat loss is reduced. The convection heat loss of the horizontally hung radiant heating mainly comes from the convection loss of the tail gas and the back of the reflecting cover.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the prior art radiation heater great at the heating in-process convection heat loss, the lower problem of heating efficiency provides following technical scheme:
a radiant heater comprises an inner reflecting cover, wherein an outer air inlet cover is arranged on the outer surface of the inner reflecting cover, and an air passage for air circulation is formed between the inner reflecting cover and the outer air inlet cover; the inner cavity of the inner reflecting cover is provided with a combustion pipe, and one end of the combustion pipe is connected with a burner; and a combustion-supporting air inlet pipe is arranged in the air passage, and one end of the combustion-supporting air inlet pipe is connected with the combustion-supporting branch of the burner.
Preferably, the surface of the outer reflection cover is provided with a plurality of vent holes, the aperture of the vent holes is different, and the aperture of the vent hole close to the burner is smaller than the aperture of the vent hole far away from the burner.
Further, the concentration of the vent holes close to the combustor is less than that of the vent holes far away from the combustor.
Furthermore, one end of the outer air inlet hood close to the combustor is a closed area without the vent hole.
Further, the length of the closed zone is not less than one meter.
Preferably, a plugging plate is arranged at one end of the outer air inlet hood close to the combustor, and the plugging plate is connected with the outer air inlet hood and the inner reflection hood and used for plugging one end of the air passage.
Preferably, the length of the inner reflector is greater than the length of the outer inlet hood.
Preferably, the material of the inner reflecting cover is hot-rolled aluminum silicate.
Preferably, the outer air inlet hood is made of aluminized steel.
The utility model has the advantages that: the combustion-supporting branch of the combustor is connected with the air passage through the combustion-supporting air inlet pipe, and the air in the air passage enters the combustion chamber after being preheated by the heat on the back of the internal reflection cover to be used as combustion-supporting air, so that the energy is saved, and the heat on the back of the internal reflection cover is fully utilized; in the combustion process, continuous combustion-supporting air is needed, fresh air continuously enters the air channel, and heat which is originally accumulated on the back surface is continuously brought into the combustor for combustion through preheating, so that the back surface does not form high temperature, and the internal reflection cover does not bring convective heat loss; in addition, the surface temperature of the combustion pipe can be properly improved by an air preheating mode, the radiation efficiency of the whole heater is improved, and the gas consumption is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of one end of the air passage 3 which is blocked.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 to 2, a radiant heater includes an inner reflector 2, an outer inlet hood 1 is disposed on an outer surface of the inner reflector 2, and an air passage 3 for air circulation is formed between the inner reflector 2 and the outer inlet hood 1; a combustion tube 4 is arranged in the inner cavity of the inner reflecting cover 2, and one end of the combustion tube 4 is connected with a burner 5; and a combustion-supporting air inlet pipe 8 is arranged in the air passage 3, and one end of the combustion-supporting air inlet pipe 8 is connected with the combustion-supporting branch of the combustor 5. The burner tube 4 is fixed below the inner reflector by means of fixing elements 8.
Preferably, the surface of outer bowl is equipped with several air vent 6, the aperture of air vent 6 differs, is close 6 apertures of air vent 6 of combustor 5 department is less than the 6 apertures of air vent 6 of keeping away from combustor 5 department, and air vent 6 is convenient for the air and is got into in the air flue through air vent 6.
Further, the concentration of the vent holes 6 near the burner 5 is less dense than the concentration of the vent holes 6 far from the burner 5. The closer to the combustor 5, the lower the density of the vent holes 6 is, so that the heat convection loss of the preheated air caused by the fact that the air is discharged through the vent holes 6 when the air is close to the combustor 5 is avoided.
Furthermore, one end of the outer air inlet hood 1 close to the burner 5 is a closed area without the vent holes 6, so that the heat convection loss of the preheated air caused by the fact that the air is exhausted through the vent holes 6 when the air is close to the burner 5 is avoided.
Further, the length of the closed zone is not less than one meter.
Preferably, a blocking plate 7 is arranged at one end of the outer air inlet hood 1 close to the combustor 5, and the blocking plate 7 is connected with the outer air inlet hood 1 and the inner reflecting hood 2 and blocks one end of the air passage 3.
Preferably, the length of the inner reflecting cover 2 is greater than that of the outer air inlet cover 1, the length of the inner reflecting cover 2 is not less than 8m, the length of the combustion tube 2 is equal to or greater than that of the inner reflecting cover 2, and the length of the outer air inlet cover 1 is not less than 4 m.
Preferably, the material of the inner reflector 2 is hot-rolled aluminum silicate.
Preferably, the outer air inlet hood 1 is made of aluminized steel.
The utility model discloses a theory of operation is: air enters the air passage 3 through the vent hole 6 and the end of the air passage 3 which is not blocked, and the air in the air passage 3 is heated by the heat emitted by the back surface of the internal reflection cover 2, so that the air in the air passage is preheated; the preheated air enters a combustion-supporting air inlet pipe 8 to serve as combustion-supporting air, the combustion-supporting air inlet pipe 8 is connected with a combustion-supporting branch machine, and the combustion-supporting branch machine assists the combustor 5 to continuously burn, so that the combustion pipe 4 continuously radiates heat; continuous combustion air is needed in the combustion process, and fresh air continuously enters the air passage 3. The heat emitted from the combustion tube 4 is reflected by the inner reflector 2 and used as the energy for heating.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The radiant heater is characterized by comprising an inner reflecting cover (2), wherein an outer air inlet cover (1) is arranged on the outer surface of the inner reflecting cover (2), and an air passage (3) for air circulation is formed between the inner reflecting cover (2) and the outer air inlet cover (1); a combustion pipe (4) is arranged in the inner cavity of the inner reflecting cover (2), and one end of the combustion pipe (4) is connected with a burner (5); and a combustion-supporting air inlet pipe (8) is arranged in the air passage (3), and one end of the combustion-supporting air inlet pipe (8) is connected with a combustion-supporting extension of the combustor (5).
2. A radiant heater according to claim 1, characterised in that the outer inlet hood (1) is provided with a plurality of ventilation holes (6) in its surface, the ventilation holes (6) having different apertures, the ventilation holes (6) being closer to the burner (5) with a smaller aperture than the ventilation holes (6) remote from the burner (5).
3. A radiant heater according to claim 2, characterised in that the concentration of ventilation holes (6) near the burner (5) is less concentrated than the concentration of ventilation holes (6) far from the burner (5).
4. A radiant heater according to claim 3, characterised in that the end of the outer inlet hood (1) adjacent the burner (5) is an enclosed area where said ventilation holes (6) are not provided.
5. A radiant heater as claimed in claim 4, wherein the length of the enclosure is no less than one meter.
6. A radiant heater according to claim 1, characterized in that a blanking plate (7) is provided at the end of the outer inlet hood (1) near the burner (5), which blanking plate (7) is blanking off the air duct (3) and the inner reflector (2).
7. A radiant heater as claimed in claim 1, characterised in that the length of the inner reflector (2) is greater than the length of the outer inlet hood (1).
8. A radiant heater as claimed in any of claims 1 to 6, characterised in that the inner reflector (2) is of hot rolled aluminium silicate.
9. A radiant heater according to any of claims 1-7, characterised in that the outer inlet hood (1) is of aluminised steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753243.8U CN214841129U (en) | 2021-04-14 | 2021-04-14 | Radiation heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753243.8U CN214841129U (en) | 2021-04-14 | 2021-04-14 | Radiation heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214841129U true CN214841129U (en) | 2021-11-23 |
Family
ID=78763598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120753243.8U Expired - Fee Related CN214841129U (en) | 2021-04-14 | 2021-04-14 | Radiation heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214841129U (en) |
-
2021
- 2021-04-14 CN CN202120753243.8U patent/CN214841129U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |