CN201355120Y - Ultralow temperature explosion-proof electric heater - Google Patents
Ultralow temperature explosion-proof electric heater Download PDFInfo
- Publication number
- CN201355120Y CN201355120Y CNU2009200884172U CN200920088417U CN201355120Y CN 201355120 Y CN201355120 Y CN 201355120Y CN U2009200884172 U CNU2009200884172 U CN U2009200884172U CN 200920088417 U CN200920088417 U CN 200920088417U CN 201355120 Y CN201355120 Y CN 201355120Y
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- explosion
- electric heater
- proof
- connection box
- type anti
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Abstract
The utility model relates to an ultralow temperature explosion-proof electric heater comprising a box body, in which an explosion-proof junction box, a radiation fan and an electric heater are arranged, wherein the explosion-proof junction box is provided with a low-temperature control circuit board. The ultralow temperature explosion-proof electric heater can reliably work for a long term in environment with air temperature below minus 45 DEG C and ASL (above sea level) under 2000m; and conversion rate of electric energy of the ultralow temperature explosion-proof electric heater is high, and heating power is not influenced by low temperature and the temperature of the ultralow temperature explosion-proof electric heater can be set and regulated conveniently, thus effectively avoiding various failures caused by the heating of the case of the ultralow temperature explosion-proof electric heater and greatly improving the practical effects of the ultralow temperature explosion-proof electric heater.
Description
Technical field
The utility model belongs to the electric heater technical field, is a kind of ultralow warm type anti-explosion electric heater.
Background technology
Along with popularizing of electric heater, become the requirement of complete work and living condition.Though electric heater in the market is of a great variety, one is that the thermal efficiency is generally not ideal, and the surrounding air programming rate is slow; The 2nd, be applicable to that the explosion-proof heater in various inflammable and explosive places is less, and dependability is relatively poor; The 3rd, when existing heater uses at the cold district below-20 ℃, often can't start and use.These problems are to hinder the big problem of heater field development always, up to now, also do not obtain the comparatively desirable ultralow temperature anti-explosion electric heater of effect on the market.
The utility model content
The purpose of this utility model provides a kind of reasonable in design, heats effectively, can guarantee in-45 ℃ low temperature environment the ultralow warm type anti-explosion electric heater of normal operation.
Realize that the technical scheme that the purpose of this utility model is taked is: this heater has a casing, is provided with explosion-proof connection box, low temperature blower fan and electric heater in the casing, and the low temperature control circuit board is housed in the explosion-proof connection box.
On the described low temperature control circuit board electric-heating belt is housed.
Described explosion-proof connection box adopts welded-steel plate construction, and outer surface rust prevention by applying liquid material lacquer, inner surface are coated with anti-arc lacquer.
Described electric heater is made up of the tubular electrical heating element that front and back are misplaced arrangement at interval, is provided with the temperature sensor that is connected with control circuit near its surperficial position.
The drive motors of described cooling fan is an explosion-proof motor, and its housing adopts the two ends fastening structure.
Between the binding post in the described explosion-proof connection box and and the explosion-proof connection box inwall between minimum clearance be 5mm～6mm, minimum creepage distance is 6.3mm～10mm.
The cable of described explosion-proof connection box is introduced the fourth hydrogen rubber seal that the connection jaws place is provided with Shao Er Shi hardness 45-55.
The cable outlet place of described explosion-proof connection box is provided with the flame proof assembly, this assembly is made up of the threading sleeve pipe and the screw thread casting die that are packed in the explosion-proof connection box bottom, fourth hydrogen rubber seal and the packing washer of Shao Er Shi hardness 45-55 are housed in the threading sleeve pipe, and compress by the screw thread casting die.
The cable of described heater adopts cryocable.
The flameproof joint of described explosion-proof connection box and explosion-proof motor all scribbles antirust oil.
The ultralow warm type anti-explosion electric heater of making according to such scheme, can be below height above sea level 2000m, air themperature is in the medium-term and long-term work reliably of the environmental condition below-45 ℃, this heater structure is reasonable in design, adopt tubular electrothermal element as heater, the energy conversion rate height, and heating power is not influenced by low temperature environment.In armored cassette, increase simultaneously heat tape, guarantee that complete machine can well move in-45 ℃ low temperature environment, this heater can be avoided heater housing heating and the various operation troubles that cause with imitating, improve the practical function of heater greatly, can be widely used in having in the environment such as oil, chemical industry, military project the hazardous area of damp, as the usefulness of heating service.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the side view of Fig. 1.
The specific embodiment
Referring to Fig. 1, Fig. 2, ultralow warm type anti-explosion electric heater of the present utility model, has a casing 1, top in the casing 1 is provided with explosion-proof connection box 2, this explosion-proof connection box 2 adopts the closed structure of steel plate welding, and its outer surface is coated with antirust paint, and inner surface is coated with anti-arc lacquer, in case the short circuit sparking occurs, box body can not damage the combustion explosion that punctures or cause outside fuel gas.The flameproof joint of explosion-proof connection box 2 scribbles antirust oil, causes flame proof to lose efficacy to prevent corrosion.In explosion-proof connection box 2 inside the low temperature control circuit board is installed, the electric-heating belt (not shown) is housed on it, cross when low,, guarantee that complete machine can well operation in-45 ℃ low temperature environment earlier to the control circuit heating in environment temperature.Circuit part in the low temperature control circuit board adopts the custom circuit design, and its circuit is not being given unnecessary details.Between the binding post in the explosion-proof connection box 2 and and explosion-proof connection box 2 inwalls between minimum clearance be 5mm～6mm, minimum creepage distance is 6.3mm～10mm, is introducing safe in utilization under 220V or the 380V voltage source situation to guarantee heater.The cable of introducing explosion-proof connection box 2 is provided with armored cassette 3 at the incoming line place, and sealing ring is housed in it, and the material of sealing ring is fourth hydrogen rubber XH-50, and its Shao Er Shi hardness is 45-55, to guarantee the reliability of flame proof.The exit of the outgoing cable 8 of explosion-proof connection box 2 is provided with flame proof assembly 7, this assembly is made up of threading sleeve pipe 7-1 that is packed in explosion-proof connection box 2 bottoms and screw thread gland 7-2, fourth hydrogen rubber seal and the packing washer of Shao Er Shi hardness 45-55 are housed in the threading sleeve pipe 7-1, and by screw thread gland 7-2 sealing ring is compressed, guarantee the flame proof sealing of line outlet.The introducing of explosion-proof connection box 2, outgoing cable all adopt cryocable.
In the bottom of casing 1 low temperature blower fan 5 and electric heater are housed, the position corresponding with electric heater has the ventilating opening that is connected with extraneous air on the casing, by air circulation in the pressure accelerating chamber of low temperature blower fan 5, room air is heated up rapidly, protection network 6 is equipped with at the ventilating opening position, with the safety that guarantees to use.The drive motors of low temperature blower fan 5 is an explosion-proof motor, and its housing adopts the two ends fastening structure, and flameproof joint is all adopted on each composition surface, and scribbles antirust oil, makes it have good explosion insulation performance.Electric heater is made up of the two comb shape electrical heating elements 4 that front and back are misplaced at interval, and its surface temperature and internal resistance have good linear relationship.Protection network 6 near tubular electrical heating element 4 surfaces is provided with temperature sensor, and be connected with control circuit by signal transmission line, be used to monitor and control the temperature on heating element heater surface, avoid causing the combustion explosion of fuel gas in the environment because of local temperature is too high.In addition, be equipped with the binding post of ground connection in the inside and outside portion of casing 1, and ground connection sign is arranged, the heater upper cover rear portion is provided with the fixed fastener 9 that is connected with indoor wall, can fix by wall securely during use, and is safer.
Claims (10)
1, a kind of ultralow warm type anti-explosion electric heater, it is characterized in that: this heater has a casing, is provided with explosion-proof connection box, low temperature blower fan and electric heater in the casing, and the low temperature control circuit board is housed in the explosion-proof connection box.
2, ultralow warm type anti-explosion electric heater according to claim 1 is characterized in that: on the described low temperature control circuit board electric-heating belt is housed.
3, ultralow warm type anti-explosion electric heater according to claim 1 is characterized in that: described explosion-proof connection box adopts welded-steel plate construction, and outer surface rust prevention by applying liquid material lacquer, inner surface are coated with anti-arc lacquer.
4, ultralow warm type anti-explosion electric heater according to claim 1, it is characterized in that: described electric heater is made up of the tubular electrical heating element that front and back are misplaced arrangement at interval, is provided with the temperature sensor that is connected with control circuit near its surperficial position.
5, ultralow warm type anti-explosion electric heater according to claim 1, it is characterized in that: the drive motors of described cooling fan is an explosion-proof motor, its housing adopts the two ends fastening structure.
6, ultralow warm type anti-explosion electric heater according to claim 1 is characterized in that: between the binding post in the described explosion-proof connection box and and the explosion-proof connection box inwall between minimum clearance be 5mm～6mm, minimum creepage distance is 6.3mm～10mm.
7, ultralow warm type anti-explosion electric heater according to claim 1 is characterized in that: the cable of described explosion-proof connection box is introduced the fourth hydrogen rubber seal that the connection jaws place is provided with Shao Er Shi hardness 45-55.
8, ultralow warm type anti-explosion electric heater according to claim 1, it is characterized in that: the cable outlet place of described explosion-proof connection box is provided with the flame proof assembly, this assembly is made up of the threading sleeve pipe and the screw thread casting die that are packed in the explosion-proof connection box bottom, fourth hydrogen rubber seal and the packing washer of Shao Er Shi hardness 45-55 are housed in the threading sleeve pipe, and compress by the screw thread casting die.
9, ultralow warm type anti-explosion electric heater according to claim 1 is characterized in that: the cable of described heater adopts cryocable.
10, ultralow warm type anti-explosion electric heater according to claim 1, it is characterized in that: the flameproof joint of described explosion-proof connection box and explosion-proof motor all scribbles antirust oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200884172U CN201355120Y (en) | 2009-02-03 | 2009-02-03 | Ultralow temperature explosion-proof electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200884172U CN201355120Y (en) | 2009-02-03 | 2009-02-03 | Ultralow temperature explosion-proof electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355120Y true CN201355120Y (en) | 2009-12-02 |
Family
ID=41411461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200884172U Expired - Fee Related CN201355120Y (en) | 2009-02-03 | 2009-02-03 | Ultralow temperature explosion-proof electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355120Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534648A (en) * | 2014-12-25 | 2015-04-22 | 中航力源液压股份有限公司 | Mobile explosion-proof environment warming method and device |
| CN111750518A (en) * | 2019-03-29 | 2020-10-09 | 青岛海尔智能技术研发有限公司 | Gas water heater |
| CN115235116A (en) * | 2022-08-05 | 2022-10-25 | 北京巨恒芯展环保科技有限公司 | Explosion-proof industrial air heating equipment |
-
2009
- 2009-02-03 CN CNU2009200884172U patent/CN201355120Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534648A (en) * | 2014-12-25 | 2015-04-22 | 中航力源液压股份有限公司 | Mobile explosion-proof environment warming method and device |
| CN104534648B (en) * | 2014-12-25 | 2017-06-16 | 中航力源液压股份有限公司 | A kind of mobile explosion-proof environment heating method and device |
| CN111750518A (en) * | 2019-03-29 | 2020-10-09 | 青岛海尔智能技术研发有限公司 | Gas water heater |
| CN115235116A (en) * | 2022-08-05 | 2022-10-25 | 北京巨恒芯展环保科技有限公司 | Explosion-proof industrial air heating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20160203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |