CN2145340Y - Anti-explosive heating warmer - Google Patents
Anti-explosive heating warmer Download PDFInfo
- Publication number
- CN2145340Y CN2145340Y CN 93200353 CN93200353U CN2145340Y CN 2145340 Y CN2145340 Y CN 2145340Y CN 93200353 CN93200353 CN 93200353 CN 93200353 U CN93200353 U CN 93200353U CN 2145340 Y CN2145340 Y CN 2145340Y
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- China
- Prior art keywords
- explosion
- temperature
- proof
- proof chamber
- explosive
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- 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 - Lifetime
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Abstract
The utility model discloses an anti-explosive heating warmer, which is composed of the main body of a heat radiator and an anti-explosive box. All electrical elements and all temperature measuring elements are installed in an anti-explosive cavity, an anti-explosive structure is adopted, and the explosion caused by the sparking of the electric appliances is prevented; two temperature measuring elements are installed at the same time to measure the temperature of an electric heater, the main power supply is cut when the temperature of the electric heater reaches the fixed value, an electric heating tube is stopped heating, and the temperature of the anti-explosive heating warmer can not exceed the fixed value. The anti-explosive heating warmer can be used in the environments of inflammable gas atmosphere.
Description
The utility model relates to heating installation
In inflammable, explosive environment (as the gas station, dangerous cargo warehouse and the workplace of explosion hazard gases is arranged) as with electric heating device warm oneself, can set off an explosion because of the spark that electric elements produced, produce blast as the too high low ignition point material that also can cause of the temperature of electric heater simultaneously.So used electric heating device must have explosion-proof performance in inflammable, explosive environments, also want can strict control for the temperature of electric heater simultaneously, does not cause the electric heater surface to surpass dangerous temperature.
The purpose of this utility model provides a kind of explosion-proof, and can control the electric heating device of electric heater surface temperature.
The explosion-proof electric heating device of the utility model is made up of radiator body and explosion-proof chamber two parts.Explosion-proof chamber is installed in a side of radiator body.Said radiator body is made up of fin, and oily heat transfer medium is housed in the fin, and the quantity of fin needs by heat dissipation capacity and decides.Said explosion-proof chamber is made up of explosion-proof chamber box, power switch, anti-explosion terminal box.Said explosion-proof chamber box is made up of base plate and lid, and base plate and lid adopt the plane engagement explosion separation structure.Power switch is installed in the explosion-proof chamber place and power line introducing explosion-proof chamber place all adopts the threaded flame-proof type structure.The explosion-proof wiring post is housed in the said anti-explosion terminal box.Temperature control panel, electrothermal tube, temperature element and temperature controller also are housed in explosion-proof chamber.
Illustrate that accompanying drawing is as follows:
Fig. 1 is the explosion-proof electric heating device structure of a utility model front view.(part is analysed and observe)
Fig. 2 is the explosion-proof electric heating device structure side of a utility model view.(part is analysed and observe)
Fig. 3 is the explosion-proof electric heating device temperature control of a utility model block diagram.
Fig. 4 is the explosion-proof electric heating device temperature control of a utility model electrical schematic diagram.
The accompanying drawings embodiment and the course of work are as follows:
The explosion-proof electric heating device of the utility model is made up of radiator body (1) and explosion-proof chamber (2), and explosion-proof chamber (2) is installed in a side of radiator body (1).Radiator body (1) is assembled by fin (3).Fin fills oily heat transfer medium in (3), and the contained fin quantity of each radiator body is decided by required heat dissipation capacity.Explosion-proof chamber (2) is by the explosion-proof chamber box, power switch (4), and anti-explosion terminal box (5) is formed.The explosion-proof chamber box is made up of base plate (6) and lid (7).Base plate (6) is assembled into a closed cavity with lid (7) with the plane engagement explosion separation structure.Power switch (4) is installed, anti-explosion terminal box (5) in explosion-proof chamber (2).Explosion-proof wiring post (8) is installed in anti-explosion terminal box (5).Temperature control panel (9) also is installed, electrothermal tube (10), temperature element (11) and temperature controller (12) in explosion-proof chamber (2).Power switch is installed in the explosion-proof chamber place and power line introducing explosion-proof chamber place all adopts the threaded flame-proof type structure.
This explosion-proof electric heating device adds the deep fat heat transfer medium by electrothermal tube (10).The temperature-sensing element of temperature element (11) and temperature controller (12) all is close to and is installed on the electrothermal tube (10).Regulate with the temperature that records radiator.
The course of work of this explosion-proof electric heating device is as follows: electrothermal tube energising after connecting power supply, add the deep fat heat transfer medium, the Temperature probe of temperature element and temperature controller promptly records the temperature on electrothermal tube surface simultaneously, after the Temperature probe of temperature element records temperature signal, be output voltage, this voltage through amplification a magnitude of voltage V
1, with V
1With given magnitude of voltage V
2(i.e. the maximum temperature of Biao Dinging) compares as V
1＜V
2Comparator output low level then, this signal be by gating circuit, driver, and the control solid-state relay is in conducting state, makes electrothermal tube continue the oily heat transfer medium of energising and continues to heat up.As the temperature signal V that records
1〉=V
2The time, then comparator is exported high level, and this signal is by gating circuit, and driver disconnects solid-state relay, the energising of electrothermal tube stop, stop heating.When oily heat transfer medium temperature drops to V
1＜V
2The time, then electrothermal tube begins energising heating heat transfer medium once more, and so circulation is carried out, and both can guarantee heating, can prevent from again that heating-up temperature is too high to set off an explosion.Temperature controller is a Temperature protection device, when temperature element (11) or temperature control panel (9) malfunctioning, when losing temperature automatically controlled, thermoregulatory effect, temperature controller (12) still can work on when Temperature probe record the electrothermal tube surface when reaching a certain temperature value (this value is adjusted in advance) open the control contact, the main power source of electrothermal tube is opened circuit, the stop heating is to guarantee the unlikely overtemperature of warmer.Fig. 3 is the temperature control block diagram of this explosion-proof electric heating device, and wherein temperature sensor is the semiconductor thermal detector, and temperature controller is HG4114.
Fig. 4 is the electrical schematic diagram of above-mentioned block diagram.
Explosion-proof electric heating device of the present utility model can be used for having the environment of explosive inflammable atmosphere.
Claims (1)
1, a kind of explosion-proof electric heating device, it is characterized in that this electric heating device is by radiator body, explosion-proof chamber two parts are formed, explosion-proof chamber is installed in a side of radiator body, said radiator body is made up of fin, fin quantity is decided by the needs of heat dissipation capacity, said explosion-proof chamber is by the explosion-proof chamber box, power switch, anti-explosion terminal box is formed, said explosion-proof chamber is by base plate, lid is formed, base plate and lid adopt the plane engagement explosion separation structure, power switch is installed in the explosion-proof chamber place and power line introducing explosion-proof chamber place all adopts the threaded flame-proof type structure, the explosion-proof wiring post is housed in the said anti-explosion terminal box, temperature control panel also is housed in explosion-proof chamber, electrothermal tube, temperature element and temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200353 CN2145340Y (en) | 1993-01-14 | 1993-01-14 | Anti-explosive heating warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200353 CN2145340Y (en) | 1993-01-14 | 1993-01-14 | Anti-explosive heating warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2145340Y true CN2145340Y (en) | 1993-11-03 |
Family
ID=33785143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93200353 Expired - Lifetime CN2145340Y (en) | 1993-01-14 | 1993-01-14 | Anti-explosive heating warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2145340Y (en) |
-
1993
- 1993-01-14 CN CN 93200353 patent/CN2145340Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |