CN202083099U - S-shaped electric hot plate type gas electric heating device - Google Patents
S-shaped electric hot plate type gas electric heating device Download PDFInfo
- Publication number
- CN202083099U CN202083099U CN 201120115173 CN201120115173U CN202083099U CN 202083099 U CN202083099 U CN 202083099U CN 201120115173 CN201120115173 CN 201120115173 CN 201120115173 U CN201120115173 U CN 201120115173U CN 202083099 U CN202083099 U CN 202083099U
- Authority
- CN
- China
- Prior art keywords
- hot plate
- electric hot
- heating
- plates
- snakelike
- 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
Images
Abstract
The utility model discloses an S-shaped electric hot plate type gas electric heating device. The device is technically characterized in that an electric heating unit adopts one or more than two S-shaped electric hot plates which are arranged in parallel; a plurality of rows of holes are formed in the S-shaped electric hot plate/plates which is/are perpendicular to the gas flowing direction; the rows of holes are distributed in a staggered way; gas to be heated is perpendicular to the surface of the electric hot plate/plates and flows through the holes in the electric hot plate/plates; insulating ceramic plates are arranged on two sides of the S-shaped electric hot plate/plates; and the insulating ceramic plates are fixed on ceramic supporting columns positioned at two ends of the S-shaped electric hot plate/plates. Compared with the prior art, the device has the advantages that the heat efficiency is high, the electric heating unit has a good heat elimination effect, the surface temperature of the electric heating unit is low, the electric heating unit is not easy to be oxidized, the service life of the electric heating unit is long, the air heating quality is high, and the like, thus being particularly applicable to occasions where the required amount of hot air is large and the temperature rise is high.
Description
Technical field
The utility model relates to a kind of gas electrically heating device, and particularly a kind of heating is the board-like gas electrically heating device of electric heating, is applicable to that the heat air scale of construction is big, temperature rise, the demanding occasion of gas heating quality.
Background technology
Gas electrically heating device mainly is to be used for needed gas is heated to needed gas temperature from initial temperature, reaches as high as 850 ℃, is applied to industries such as Aero-Space, weapons, chemical industry, electric power, grain processing and pharmacy widely.In addition, many research and production such as the coating process of drying materials process, warming by air conditioner and automobile making process, institution of higher learning laboratory etc. all to need a large amount of hot-airs, its mode of heating also be to adopt electrically heated mode usually.
In the prior art the scheme of two kinds of gas-heating apparatus of normal employing as illustrated in fig. 1 and 2, cold air is sent into blower fan 1, carries out heat convection with exposed heating 2 or the heating and the air that add protective casing 3.The problem that this method exists is: under identical electric thermal power condition, the cooling surface area of heating is little, thereby heating surface temperature height, in the medium-term and long-term heating of air, causes oxide skin to come off, and is influential to the cleannes of air; On the other hand, mechanical strength is low during heating high temperature, yielding collapsing, and heating material heating back alloy grain rises greatly, and fragility increases, and is unable to undergo to impact and bending, thereby is difficult to maintenance.When adding when pining for Cryogenic air, the heating material must adopt nichrome; When heating during high temperature air, must adopt the noble metals such as nichrome of the high trade mark, perhaps nonmetallic materials such as carborundum.Be subjected to the restriction of the surface radiating power of heating, when the needs air capacity is big, when heating-up temperature was high, the heating material usage was big, and the electric heater unit physical dimension is big, and heater self is many to the environment heat radiation, causes electrothermal efficiency low.Preceding two kinds of scheme common features are that the heating cross section is circular heating wire.
Shown in Figure 3 is the structural representation of the another kind of heating of available technology adopting, and its cross section is rectangular ribbon heater.Can know by physics principle: under length and resistance certain condition, the ribbon heater area of dissipation is circular heating wire greater than the cross section, and flakiness ratio (b/h) is big more, and the electric thermal power area of dissipation is big more relatively, under identical electric thermal power condition, area of dissipation is big more, the heating temperature is low more, is difficult for the oxidation distortion more, and the life-span is long more, structure is compact more, and the electric calorifie installation thermal efficiency is high more.Consider easy for installation and prevent under the high temperature heating lodging, the flakiness ratio of ribbon heater (b/h) generally can not surpass 10～15, because this kind scheme gas must be parallel to the surface, ribbon heater, when gas when the surface, ribbon heater is skimmed over because the viscosity of gas, gas has the very thin boundary layer of one deck with the surface, this boundary layer thermal resistance is very big, although so the more circular heating of this scheme heat transfer area cross section is big, heat transfer coefficient is little, seldom adopt this scheme in the middle of the engineering.
The utility model content
The purpose of this utility model is deficiency and the defective that exists at prior art, provide a kind of snakelike electric heating board-like gas electrically heating device, little in the hope of heating cooling surface area in the solution prior art, problems such as the heat transfer coefficient between heating and the gas is little, make the gas electrically heating device structure compact more, improve the environment for use of heating, reduce the heating cost, and further improve the thermal efficiency.
The purpose of this utility model is achieved by the following technical solution:
The board-like gas electrically heating device of a kind of snakelike electric heating, this device comprises housing, is arranged on heating and electrical wiring in the housing, it is characterized in that: described heating adopts one or the snakelike electric hot plate of placing more than two arranged side by side, and on snakelike electric hot plate face, have many rounds perpendicular to gas flow direction, perforate interlaced arrangement between row and row is heated gas and flows through from the tapping on the electric hot plate perpendicular to the electric hot plate surface; Snakelike electric hot plate both sides are provided with insulated ceramic plates, and described insulated ceramic plates is fixed on the pottery magnetic pillar that is positioned at snakelike electric hot plate two ends.
Technical characterictic of the present utility model also is: the thickness of described electric hot plate is at 0.1～3 millimeter; Snakelike electric hot plate flakiness ratio b/h is 200～2000.The resistance of described snakelike electric hot plate adopts in parallel or is connected in series.Hole on the described snakelike electric hot plate is a slot.
The utility model compared with prior art has the following advantages and the high-lighting effect: 1. the area of dissipation of heating is compared with the common electrical torrid zone with the heating wire of prior art, increases greatly.2. the utility model gas flows through perpendicular to the heating surface, and gas directly washes away the heating surface makes heat transfer coefficient increase greatly.3. the utility model electric hot plate is surrounded snakelike, and perforate on electric hot plate, every rows of openings is staggered, be heated gas and in runner, repeatedly turn back, efficient hardening heat transfer.
In a word, the utility model has obviously increased heat transfer area, has increased heat transfer coefficient, and having strengthened conducts heat makes the heating working environment be improved, and the life-span of heating is improved.When the needs air capacity big, when heating-up temperature was high, the heating material usage can lack relatively, and the electric heater unit physical dimension can relative compact, thereby heater self is few to the environment heat radiation, so the electrothermal efficiency of this device also has remarkable advantages than prior art.
Description of drawings
Fig. 1 is the structural representation of a kind of gas-heating apparatus of heating wire for heating in the prior art.
Fig. 2 is the structural representation of the another kind of gas-heating apparatus of heating wire for heating in the prior art.
Fig. 3 is the structural representation that heating adopts the ribbon heater in the prior art.
Fig. 4 is the left view of Fig. 3.
The structural representation of the board-like gas electrically heating device of snakelike electric heating that Fig. 5 provides for the utility model.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is the B-B cutaway view of Fig. 5.
Fig. 8 is the C-C cutaway view of Fig. 5.
Fig. 9 is the perspective view of snakelike electric hot plate.
Figure 10 is the schematic diagram that installs and fixes of snakelike electric hot plate.
Among the figure: the 1-blower fan; The 2-heating wire; The 3-protective casing; The 4-housing; The 5-electrical wiring; The 6-insulated ceramic plates; The snakelike electric hot plate of 7-; The 8-ceramic leg; 9-connects pole plate; 10-pottery connecting piece; The 11-perforate.
The specific embodiment
Below in conjunction with accompanying drawing concrete structure of the present utility model, principle and the course of work are described further.
The board-like gas electrically heating device of snakelike electric heating that the utility model provides is shown in Fig. 5,6,7 and 8, this device comprises housing 4, is arranged on heating and electrical wiring 5 in the housing, described heating adopts one or the snakelike electric hot plate of placing 7 more than two arranged side by side, and on snakelike electric hot plate face, having many rounds perpendicular to gas flow direction, perforate is a slot; Perforate 11 interlaced arrangement between row and row are heated gas and flow through from the perforate 11 on the electric hot plate perpendicular to the electric hot plate surface; Snakelike electric hot plate both sides are provided with insulated ceramic plates 6, and described insulated ceramic plates is fixed on the pottery magnetic pillar 8 that is positioned at snakelike electric hot plate two ends.
The electrothermal principle of snakelike electric hot plate as shown in Figure 9, along gas flow direction, snakelike electric hot plate is arranged in juxtaposition, electrical wiring 5 inserts a terminal of power supply, along gas flow direction, after electric current flows in snakelike electric hot plate in the past, by connecting pole plate 9 current lead-through is arrived middle snakelike electric hot plate at snakelike electric hot plate afterbody, electric heating is against gas flow direction, flow to front end from the afterbody of second snakelike electric hot plate, connect pole plate 9 with three snakelike electric hot plates of current lead-through to the at front end by another, introduce another terminal of power supply at last from another link electrode 5 of the 3rd snakelike electric hot plate afterbody.Be illustrated as the resistance series relationship of 3 snakelike electric hot plates among the figure, as required, the resistance of a plurality of snakelike electric hot plates can adopt the serial or parallel connection structure.
The heating of this device be flakiness ratio (b/h) 200～2000, considerably beyond the electric hot plate of general ribbon heater, under identical electric thermal power condition, this heating area of dissipation is than all big many in heating wire and the common electrical torrid zone.Electric hot plate surrounds snakelike, perforate on the electric hot plate, every rows of openings is staggered, being heated gas flows through from the tapping on the electric hot plate perpendicular to the electric hot plate surface, air-flow is repeatedly turned back and is washed away the electric hot plate surface, has strengthened heat transfer, has reduced the surface temperature of electric hot plate, make the electric hot plate working environment improve greatly, the electric hot plate life-span improves greatly.
Fixing as shown in figure 10 of snakelike electric hot plate, snakelike electric hot plate both sides are provided with insulated ceramic plates 6, have groove on the insulated ceramic plates, are used for fixing electric hot plate, and ceramic leg 8 is used for the supports insulative ceramic wafer.As required, in order to install better and to fix, the both sides of each snakelike electric hot plate can be provided with several insulated ceramic plates 6 clampings along short transverse; Ceramic leg 8 and insulated ceramic plates 6 form an insulating ceramics support by ceramic connecting piece 10, and the insulating ceramics support contacts with metal shell 4 and links to each other, and this structure is to preventing the housing conduction and preventing that electric hot plate lodging distortion has special effect under the high temperature.
Claims (4)
1. board-like gas electrically heating device of snakelike electric heating, this device comprises housing (4), is arranged on heating and electrical wiring (5) in the housing, it is characterized in that: described heating adopts one or the snakelike electric hot plate of placing (7) more than two arranged side by side, and on snakelike electric hot plate face, have many rounds perpendicular to gas flow direction, perforate between row and row (11) interlaced arrangement is heated gas and flows through from the perforate (11) on the electric hot plate perpendicular to the electric hot plate surface; Snakelike electric hot plate both sides are provided with insulated ceramic plates (6), and described insulated ceramic plates is fixed on the pottery magnetic pillar (8) that is positioned at snakelike electric hot plate two ends.
2. according to the board-like gas electrically heating device of the described snakelike electric heating of claim 1, it is characterized in that: the thickness of electric hot plate is at 0.1～3 millimeter; Snakelike electric hot plate flakiness ratio b/h is 200～2000.
3. according to the board-like gas electrically heating device of the described snakelike electric heating of claim 1, it is characterized in that: the resistance of described snakelike electric hot plate adopts in parallel or is connected in series.
4. according to the board-like gas electrically heating device of the described snakelike electric heating of claim 1, it is characterized in that: the hole on the described snakelike electric hot plate is a slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120115173 CN202083099U (en) | 2011-04-19 | 2011-04-19 | S-shaped electric hot plate type gas electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120115173 CN202083099U (en) | 2011-04-19 | 2011-04-19 | S-shaped electric hot plate type gas electric heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083099U true CN202083099U (en) | 2011-12-21 |
Family
ID=45343725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120115173 Expired - Fee Related CN202083099U (en) | 2011-04-19 | 2011-04-19 | S-shaped electric hot plate type gas electric heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083099U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200345A (en) * | 2011-04-19 | 2011-09-28 | 沈阳工程学院 | Snake-like electric heating plate type gas electric heating device |
| CN103949075A (en) * | 2014-04-30 | 2014-07-30 | 郭远军 | Gasification reaction device |
| JP2019510343A (en) * | 2016-03-02 | 2019-04-11 | ワットロー・エレクトリック・マニュファクチャリング・カンパニー | Exposed heating element for heating fluid flow |
-
2011
- 2011-04-19 CN CN 201120115173 patent/CN202083099U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200345A (en) * | 2011-04-19 | 2011-09-28 | 沈阳工程学院 | Snake-like electric heating plate type gas electric heating device |
| CN103949075A (en) * | 2014-04-30 | 2014-07-30 | 郭远军 | Gasification reaction device |
| JP2019510343A (en) * | 2016-03-02 | 2019-04-11 | ワットロー・エレクトリック・マニュファクチャリング・カンパニー | Exposed heating element for heating fluid flow |
| US11330676B2 (en) | 2016-03-02 | 2022-05-10 | Watlow Electric Manufacturing Company | Bare heating elements for heating fluid flows |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202083099U (en) | S-shaped electric hot plate type gas electric heating device | |
| CN102738378A (en) | Thermoelectric cluster, method for operating same, device for connecting an active element in said cluster to a thermoelectric drive, generator (variants) and heat pump (variants) based thereon | |
| CN101801124A (en) | Precision strip heating element | |
| KR100972500B1 (en) | Heating structure for electric furnace | |
| US4179603A (en) | Radial blade heating device | |
| CN110907492A (en) | Temperature-uniforming high-temperature heating assembly and heating device for testing thermal conductivity | |
| CN203298484U (en) | Air heater | |
| CN102200345A (en) | Snake-like electric heating plate type gas electric heating device | |
| CN104091662A (en) | Belt type large-power resistor | |
| CN217297863U (en) | PCR module for improving temperature uniformity | |
| KR100772068B1 (en) | Ribbon heater for sub heater | |
| CN101944414B (en) | High-power pulse linear dummy load | |
| CN110475398B (en) | Surface type radiation source and method for determining electric furnace wire power in surface type radiation source | |
| CN211546546U (en) | Module structure and gene amplification device having the same | |
| CN110940696A (en) | Temperature-equalizing heating device for heat conductivity test | |
| KR101394325B1 (en) | Heater and method for manufacturing the same | |
| JP2009218137A (en) | Heat exchanger | |
| CN105645738B (en) | Muffle furnace | |
| CN202736772U (en) | Radiating electric contact bridge | |
| CN210016649U (en) | Heating plate in full-automatic high-cleanness multilayer furnace | |
| CN219494419U (en) | Heating core structure of hot air gun and hot air gun thereof | |
| CN210220620U (en) | Conduction heating device suitable for vacuum furnace | |
| CN203590496U (en) | Double-spiral-type silicon carbide rod | |
| CN102307401A (en) | Electric heating chassis and electric kettle | |
| CN211084429U (en) | Flat plate type small household appliance electric heating assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20130419 |