CN203648968U - Closed loop fume extractor - Google Patents
Closed loop fume extractor Download PDFInfo
- Publication number
- CN203648968U CN203648968U CN201320721559.4U CN201320721559U CN203648968U CN 203648968 U CN203648968 U CN 203648968U CN 201320721559 U CN201320721559 U CN 201320721559U CN 203648968 U CN203648968 U CN 203648968U
- Authority
- CN
- China
- Prior art keywords
- closed loop
- thermocouple
- exhausting duct
- air sucking
- draft fan
- 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 - Lifetime
Links
- 239000003517 fume Substances 0.000 title abstract description 6
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 14
- 235000019198 oils Nutrition 0.000 description 14
- 239000000779 smoke Substances 0.000 description 10
- 238000012795 verification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a closed loop fume extractor. The closed loop fume extractor comprises an exhaust duct which is in a shape of a long cylinder, wherein the exhaust duct is connected with an exhaust fan on one hand and further connected with at least one hollow induced draft ring on the other hand. The exhaust fan is connected onto the rear side surface or the upper part of the exhaust duct, and the hollow induced draft ring is connected onto the front side surface of the exhaust duct. An upper cover is arranged at the upper end of the induced draft ring, and at least one thermocouple inserting hole for being inserted with a thermocouple is formed in the upper cover. The closed loop fume extractor disclosed by the utility model can maximally solve the problems of 1, distribution of flue gases generated by an oil groove in a workshop, 2, inconstant thermocouple cold junction temperature due to the traditional exhaust fan, and 3, limited working space above the oil groove because the traditional exhaust fan is placed above the oil groove.
Description
Technical field
The utility model relates to induced-draft fan, specifically a kind of closed loop induced-draft fan.
Background technology
Thermocouple is the widely used a kind of temperature element of commercial measurement.It is that wire one end of two kinds of unlike materials is welded together as measuring junction and is also called hot junction, and the other end of two one metal wires is freely separately cold junction.In the time that the hot junction of thermocouple and cold junction have the temperature difference to exist, between two end points of cold junction, just produce electromotive force.While measuring temperature, the temperature of cold junction must be known and be constant.
By the requirement of national verification code, thermocouple thermometer need to regularly be examined and determine, normal temperature to 300 degree Celsius scope provides temperature by thermostatic oil bath, the heat carrier that thermostatic oil bath uses mostly is vegetable oil, the temperature of being fuming of general vegetable oil is 160 degrees Celsius of left and right, in the time that temperature exceedes, existing a large amount of flue gas produces, so the processing of must discharging fume.Traditional fume exhausting type is that an awning cover formula induced-draft fan is installed above heating oil tank, and the flue gas distributing in workplace is discharged.This type of induced-draft fan is open smoke evacuation, and in the time of its work, the air between whole calibrating is all in flow regime, and the violent position of Air Flow is under enclosure, and this position is the cold junction of tested thermocouple just.National verification code regulation and the requirement of thermocouple self principle, in verification process, cold junction temperature must be constant.And awning cover formula induced-draft fan is in the time of work, make the very strong air-flow of generation of the cold junction of thermocouple, make cold junction temperature fluctuation very large, have a strong impact on verification result, make to examine and determine data and seriously make mistakes.Research and develop the ring-like induced-draft fan of a kind of enclosed for this reason, thoroughly solved the problem that awning cover formula induced-draft fan brings.
Summary of the invention
The purpose of this utility model is to provide a kind of closed loop induced-draft fan, can solve to greatest extent: the flue gas that 1, oil groove produces distributes the problem in operating room; 2, the thermocouple cold junction causing due to traditional exhaust blower cannot be constant problem; 3, traditional exhaust blower is placed in oil groove top, makes the limited problem of oil groove top working space.
In order to reach above-mentioned purpose, the utility model has adopted following technical scheme, and a kind of closed loop induced-draft fan comprises the exhausting duct of a rectangular tubular, and described exhausting duct connects exhaust blower on the one hand, is also connected with on the other hand at least one hollow air sucking ring.Described air sucking ring upper end is provided with upper cover, above covers the thermocouple patchhole that offers at least one and be used for inserting thermocouple.Described its inwall of hollow air sucking ring has at least one wind inlet, for sucking flue gas; Described hollow air sucking ring outer wall has an exhaust vent and is connected with exhausting duct entrance.
Described exhaust blower connection is arranged on the trailing flank of exhausting duct or above, described hollow air sucking ring connects the leading flank that is arranged on exhausting duct.
On described exhausting duct, be provided with the fixed structure being used for fixing on the wall.
Compared to prior art, the utlity model has following beneficial effect:
Closed loop induced-draft fan.Be provided with a hollow air sucking ring, the inwall of hollow air sucking ring has some wind inlets, for sucking the flue gas of required discharge.Described closed loop induced-draft fan, wherein the outer wall of suction vane has an exhaust vent, is connected with smoke duct.Described closed loop induced-draft fan is equipped with a lid that has several thermowells above hollow air sucking ring.
Closed loop induced-draft fan, by organic to hollow air sucking ring, smokejack and exhaust blower combination, form thermocouple calibration oil groove closed loop smoke evacuation system, more traditional smoke evacuation system mode, closed loop induced-draft fan can well have been realized the smoke evacuation of closed, only needs very little energy, just can realize and discharge thoroughly a large amount of oil smoke that thermostatic oil bath produces, avoid the oil smoke disperse of oil groove generation in operating room, polluted studio environment.Closed loop induced-draft fan has well solved traditional smoke evacuation system, and to cause thermocouple cold junction air high current moving, makes its temperature cannot be constant; Closed loop induced-draft fan volume is small and exquisite, makes thermostatic oil bath top working space openr.Eliminate the drawback that traditional smoke evacuation system thermostatic oil bath top only has space, 80cm left and right, greatly facilitated personnel's operation.
Brief description of the drawings
Fig. 1 is the front view of a kind of closed loop induced-draft fan of the present utility model.
In figure: 1, hollow air sucking ring; 2, upper cover; 3, thermocouple patchhole; 4, exhausting duct; 5, exhaust blower.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the utility model to be limited.
As shown in Figure 1, a kind of closed loop induced-draft fan, comprises the exhausting duct 4 of a rectangular tubular, and described exhausting duct connects exhaust blower 5 on the one hand, is also connected with on the other hand at least one hollow air sucking ring 1.Described exhaust blower connection is arranged on the trailing flank of exhausting duct or above, described hollow air sucking ring connects the leading flank that is arranged on exhausting duct.On described exhausting duct, be provided with the fixed structure being used for fixing on the wall.Described air sucking ring upper end is provided with upper cover 2, above covers the thermocouple patchhole 3 that offers at least one and be used for inserting thermocouple.Described its inwall of hollow air sucking ring has at least one wind inlet, for sucking flue gas; Described hollow air sucking ring outer wall has an exhaust vent and is connected with exhausting duct entrance.
Described hollow air sucking ring 1 its inwall has some wind inlets, for sucking flue gas.Described hollow air sucking ring 1 outer wall has an exhaust vent and is connected with air channel entrance.On described upper cover 2, have some circular holes, for by tested thermoelectricity occasionally thermometer inserted in oil groove by it.Described air channel 4 is for connecting hollow air sucking ring and exhaust blower.Described exhaust blower 5 is for providing smoke evacuation power.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (1)
1. a closed loop induced-draft fan, is characterized in that, comprises the exhausting duct of a rectangular tubular, and described exhausting duct connects exhaust blower on the one hand, is also connected with on the other hand at least one hollow air sucking ring; Described air sucking ring upper end is provided with upper cover, above covers the thermocouple patchhole that offers at least one and be used for inserting thermocouple, and described its inwall of hollow air sucking ring has at least one wind inlet, for sucking flue gas; Described hollow air sucking ring outer wall has an exhaust vent and is connected with exhausting duct entrance.
2. a kind of closed loop induced-draft fan according to claim 1, is characterized in that, described exhaust blower connection is arranged on the trailing flank of exhausting duct or above, described hollow air sucking ring connects the leading flank that is arranged on exhausting duct.
3. a kind of closed loop induced-draft fan according to claim 1, is characterized in that, is provided with the fixed structure being used for fixing on the wall on described exhausting duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721559.4U CN203648968U (en) | 2013-11-13 | 2013-11-13 | Closed loop fume extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721559.4U CN203648968U (en) | 2013-11-13 | 2013-11-13 | Closed loop fume extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203648968U true CN203648968U (en) | 2014-06-18 |
Family
ID=50915408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320721559.4U Expired - Lifetime CN203648968U (en) | 2013-11-13 | 2013-11-13 | Closed loop fume extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203648968U (en) |
-
2013
- 2013-11-13 CN CN201320721559.4U patent/CN203648968U/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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |