CN110185646A - Pressure measuring structure - Google Patents
Pressure measuring structure Download PDFInfo
- Publication number
- CN110185646A CN110185646A CN201810393564.4A CN201810393564A CN110185646A CN 110185646 A CN110185646 A CN 110185646A CN 201810393564 A CN201810393564 A CN 201810393564A CN 110185646 A CN110185646 A CN 110185646A
- Authority
- CN
- China
- Prior art keywords
- pressure
- collecting hood
- fume collecting
- exhaust fume
- hole
- 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.)
- Granted
Links
- 239000003517 fume Substances 0.000 claims description 98
- 238000010079 rubber tapping Methods 0.000 claims description 89
- 239000000779 smoke Substances 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000003546 flue gas Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 8
- 230000001788 irregular Effects 0.000 description 5
- 241000883990 Flabellum Species 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pressure taking structure which comprises a smoke collecting hood, a fan and a pressure taking nozzle, wherein the fan is arranged at the front end of the smoke collecting hood, the pressure taking nozzle is fixedly connected with the smoke collecting hood, the front end of the pressure taking nozzle is provided with a flat port and is arranged on the inner side of an upper impeller of the fan, the rear end of the pressure taking nozzle is arranged outside the smoke collecting hood, and the flat port arranged at the front end of the pressure taking nozzle is connected with a rear end pipeline. Through will get the pressure mouth and set up the inboard at the impeller to through getting the fixed connection who presses mouth and collection petticoat pipe to and getting the flat mouthful that presses the mouth front end setting, under the stable state of air current, the accurate pressure condition of acquireing in the fan spiral case.
Description
Technical field
The present invention relates to gaseous fluid detection fields, and in particular to a kind of pressure taking structure.
Background technique
Blower causes the flowing of gas, at it by manufacture negative pressure as the tool of combustion-supporting gas and exhaust, blower is provided
During work, each region shows different static pressures inside spiral case, these static pressures can be collected for assisting
The realization of other additional functions, such as in the design of gas heater, such as wind pressure can be realized using these static pressures auxiliary
The functions such as excessive protection and high Wind-Pressure Resistance.
But how to guarantee that institute's pressure power is stablized, and pressure is preferably corresponding with air quantity at pressure point, is that other function is expanded
Basis.The prior art mostly uses greatly the pressure of impeller outer week, by adjusting pressure-tapping nozzle depth or angle direction to reach required pressure
Power, the production cycle is long, and pressure-tapping nozzle need to drill and cutting thread processing, and overall structure is at high cost, and pressure value easily fluctuates.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is intended to provide a kind of in classifying turbine inner circumferential pressure, solution
Certainly pressure and the problem that air quantity mismatches and pressure is unstable.
Technical solution provided by the invention is as follows:
The front end of the exhaust fume collecting hood is arranged in a kind of pressure taking structure, including exhaust fume collecting hood, blower and pressure-tapping nozzle, the blower,
Under the cooperation of exhaust fume collecting hood, flue gas is discharged from exhaust outlet, the flabellum of the blower is opposite with the front end of the exhaust fume collecting hood,
It is rotated under the drive of motor, forms negative pressure in the front end of the exhaust fume collecting hood, flue gas extracted out inside exhaust fume collecting hood, the pressure
Mouth is fixedly connected with exhaust fume collecting hood, and the front end of the pressure-tapping nozzle offers flat mouth, and the inside of impeller on the blower is arranged in,
Impeller high-speed rotation, flue gas are excluded by the through-hole on the exhaust fume collecting hood, and on the position on the inside of impeller, flue gas flow rate is uniform,
Pressure oscillation is steady, and the pressure-tapping nozzle is fixed on the exhaust fume collecting hood, is consistent with the pressure on the inside of impeller, because in impeller
The Fluid pressure of side is stablized, and the pressure-tapping nozzle can be such that its inside is consistent with the pressure on the inside of impeller by a flat mouth,
The rear end setting of the pressure-tapping nozzle is extraneous in the exhaust fume collecting hood, and the flat mouth that the pressure front end opens up is connected with rear end pipeline, institute
The rear end for stating pressure-tapping nozzle is consistent by pipeline and the air pressure at the flat mouth, available accurate by pressure-detecting device
Atmospheric pressure value.
Further, the both ends of the pressure-tapping nozzle are provided with guide surface, the guide surface from middle part to the flat mouth to
The central axis direction of the pressure-tapping nozzle extends, and forms the shape that the middle part such as circular cone, pyramid section is greater than end cross-sectional, takes described in installation
In the state of pressure mouth, first through hole, the second through-hole and third through-hole extend through the guide surface, move along the guide surface,
It is easily installed.
Further, two groups of steps are provided in the middle part of the pressure-tapping nozzle, step described in two groups and the exhaust fume collecting hood are solid
Fixed connection, two groups of steps abut with the both ends of exhaust fume collecting hood respectively, the pressure-tapping nozzle are fixed on the exhaust fume collecting hood.
Further, the exhaust fume collecting hood includes exhaust fume collecting hood backboard, exhaust fume collecting hood foreboard and pressure-tapping nozzle bracket, before the exhaust fume collecting hood
The front end that the exhaust fume collecting hood is arranged in plate is fixedly connected with the air intake of the blower, and the exhaust fume collecting hood backboard is arranged in the collection
The rear end of petticoat pipe is oppositely arranged with the exhaust fume collecting hood foreboard, the exhaust fume collecting hood the exhaust fume collecting hood foreboard, exhaust fume collecting hood backboard and its
Under the cooperation of his mating baffle, the semiclosed region for having cavity is formed, by the combustion chamber being open with gas heater, and
Exhaust outlet connection.Under the cooperation of blower, flue gas is passed through by the opening being arranged on exhaust fume collecting hood foreboard, and the pressure-tapping nozzle branch is set up
Set in the outside of the exhaust fume collecting hood backboard, for fixing the pressure-tapping nozzle, and limit pressure-tapping nozzle axially and radially on direction,
It is provided with first through hole in the middle part of the exhaust fume collecting hood foreboard, is provided with the second through-hole, pressure-tapping nozzle in the middle part of the exhaust fume collecting hood backboard
Middle part is provided with third through-hole, and the first through hole, the second through-hole, third through-hole are corresponding, and optimal set-up mode is
Setting point-blank, the pressure-tapping nozzle pass through the first through hole, the second through-hole and third through-hole, and with first through hole and
The step that third through-hole tight fit, the first through hole and the third through-hole are circumferentially arranged with the pressure-tapping nozzle respectively is close
Cooperation, by the limit of first through hole and the second through-hole, the pressure-tapping nozzle is fixed on the exhaust fume collecting hood.
Further, the third through-hole side is provided with confined planes, the step of the pressure-tapping nozzle rear end and the limit
Plane abuts, and the rear end of the pressure-tapping nozzle is cooperated by step and the confined planes, the direction of the pressure-tapping nozzle is limited, convenient for taking
The assembly of pressure mouth, while promoting the stability of the pressure-tapping nozzle rear end after the assembly is completed.
Further, the first through hole side is provided with boss, and a part of the pressure-tapping nozzle passes through the boss,
And be fitted close with the boss, the boss is arranged in the inside of the exhaust fume collecting hood foreboard, limits the pressure radially
The activity of mouth further promotes the effect of pressure-tapping nozzle and exhaust fume collecting hood assembly.
Further, the exhaust fume collecting hood foreboard is additionally provided with flange, and the outside of the exhaust fume collecting hood is arranged in the flange,
And with blower to corresponding, under the cooperation of the flange, flue gas prevents flue gas from existing by being rectified when the opening of exhaust fume collecting hood foreboard
Occurs turbulent flow around the impeller.
Further, the pressure-tapping nozzle extends to one end on the inside of the impeller of the blower and is arranged in the flange and institute
It states between the impeller of blower, the air pressure around the flange will receive influence, the height of the flange because of the effect that flange rectifies
The part on the inside of the blower is arranged in lower than the pressure-tapping nozzle in degree, so that one end of pressure-tapping nozzle is arranged in where the flange
Between region, and the center of impeller, far from the affected region of air pressure, gas in air pressure and the spiral case at pressure-tapping nozzle flat mouth is prevented
It presses inconsistent.
Further, the pressure taking structure further includes gasket, and the gasket is socketed in the outside of the flange, with
The shape of the exhaust fume collecting hood foreboard matches, and prevents the exhaust fume collecting hood from generating seam between the volute of blower in other positions
Gap and leak cigarette, guarantee flabellum around sealing effect, prevent blower interior occur turbulent flow, cause pressure to fluctuate, the sealing
Pad is provided with anti-transfer part, and the irregular area being arranged on the anti-transfer part and the exhaust fume collecting hood foreboard is adapted, the gasket
It is clamped by the irregular area being arranged on the anti-transfer part and exhaust fume collecting hood, prevents the gasket from displacement destructor sealing occur
Property.
Further, gasket is additionally provided with positioning edge, and the positioning is mutually fitted along the top edge with the exhaust fume collecting hood foreboard
It answers, under assembled state, by positioning along matching is docked with the exhaust fume collecting hood foreboard, facilitates the gasket to position, lift-off seal
Pad the reliability of installation.
Compared with prior art, the pressure-tapping nozzle is by being arranged in the inside of impeller by the present invention, and by by pressure-tapping nozzle
With being fixedly connected for exhaust fume collecting hood, the flat mouth being arranged by pressure-tapping nozzle front end is accurate to obtain blower snail in the state of steady air current
Pressure condition in shell.
Detailed description of the invention
Fig. 1 is a kind of explosive view of pressure taking structure of the present invention.
Fig. 2 is a kind of top view of pressure taking structure of the present invention.
Fig. 3 is the sectional view of Fig. 2 of the present invention.
Fig. 4 is the schematic diagram of pressure-tapping nozzle bracket of the present invention.
Fig. 5 is the schematic diagram of pressure-tapping nozzle of the present invention
Detailed description of the invention:
100 --- exhaust fume collecting hood, 101 --- exhaust fume collecting hood foreboard, 1011 --- first through hole, 1012 --- flange,
1013 --- irregular area, 102 --- exhaust fume collecting hood backboard, 1021 --- the second through-hole, 103 --- pressure-tapping nozzle bracket,
1031 --- third through-hole, 1032 --- confined planes, 200 --- blower, 201 --- impellers, 300 --- pressure-tapping nozzle, 301 ---
--- --- --- gasket, 401 --- anti-transfer part, 402 --- position edge for guide surface, 400 for step, 303 for flat mouth, 302.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of pressure taking structure, including exhaust fume collecting hood 100, blower 200 and pressure-tapping nozzle 300, the blower 200 are arranged in the collection
The front end of petticoat pipe 100 is threadedly coupled by screw and the hole being arranged on spiral case and petticoat pipe, under the cooperation of exhaust fume collecting hood 100,
Flue gas is discharged blower 200 from exhaust outlet, and the gas outlet opened up on the flabellum of the blower 200 and the exhaust fume collecting hood 100 is opposite,
It is rotated under the drive of motor, forms negative pressure in the front end of the exhaust fume collecting hood 100, flue gas is extracted out inside exhaust fume collecting hood 100,
Flue gas passes through the air inlet that 100 bottom of exhaust fume collecting hood is arranged, and the gas outlet opposite with fan blades of motor is discharged from exhaust outlet.
The pressure-tapping nozzle 300 is fixedly connected with exhaust fume collecting hood 100, and the front end of the pressure-tapping nozzle 300 offers flat mouth 301, and
And the inside of impeller 201 on the blower 200 is set, 201 high-speed rotation of impeller, flue gas passes through on the exhaust fume collecting hood 100
During through-hole is discharged, on the position of 201 inside of impeller, flue gas flow rate is uniform, and pressure oscillation is steady, the pressure-tapping nozzle
300 is fixed on the exhaust fume collecting hood 100, is consistent with the pressure of 201 inside of impeller, because of the fluid pressure of 201 inside of impeller
Power is stablized, and the pressure-tapping nozzle 300 can be such that its internal pressure on the inside of impeller 201 is consistent by a flat mouth 301, cigarette
Gas steadily flows through near flat mouth 301, and pressure change is steady.The rear end of the pressure-tapping nozzle 300 is arranged outside the exhaust fume collecting hood 100
Boundary, the flat mouth 301 that the pressure-tapping nozzle front end opens up are connected with rear end pipeline, and the rear end of the pressure-tapping nozzle 300 passes through pipeline and institute
It states the air pressure at flat mouth 301 to be consistent, passes through the available accurate atmospheric pressure value of pressure-detecting device.
Pressure-tapping nozzle in the prior art is arranged on the spiral case of blower, the position of pressure in the periphery of draught fan impeller, and
Fixed point only one, usually also want additional processing screw thread that pressure-tapping nozzle is fixed on spiral case, pressure receives wind speed in order to prevent
Influence, need to be arranged an angle so that the opening on pressure-tapping nozzle direction with wind direction on the contrary, so difficulty of processing it is big, and
And when pressure-tapping nozzle rotates, the direction of opening will change and enter the wind, and seriously affect the accuracy of pressure;And it is of the invention
Pressure-tapping nozzle is fixed on exhaust fume collecting hood by the scheme of offer by two fixing points, is processed, is not necessarily to using conventional hollow tube
The structure for fastening such as screw thread is processed, while the inner circumferential of impeller is arranged in pressure point, the direction of pressure-tapping nozzle is identical as wind direction, opens
If a flat mouth is that can guarantee that the opening direction of pressure-tapping nozzle is opposite with wind direction.
The exhaust fume collecting hood 100 includes 300 bracket 103 of exhaust fume collecting hood backboard 102, exhaust fume collecting hood foreboard 101 and pressure-tapping nozzle, the collection
The front end that the exhaust fume collecting hood 100 is arranged in petticoat pipe foreboard 101 is fixedly connected with the air intake of the blower 200, the exhaust fume collecting hood
Backboard 102 is arranged in the rear end of the exhaust fume collecting hood 100 and the exhaust fume collecting hood foreboard 101 be oppositely arranged the exhaust fume collecting hood foreboard 101,
Exhaust fume collecting hood backboard 102 and other mating baffles constitute exhaust fume collecting hood 100, form the semiclosed region for having cavity, pass through collection
The air inlet of 100 bottom of petticoat pipe and the combustion chamber of mating gas heater, and pass through the gas outlet of the exhaust fume collecting hood foreboard 101
It connect with exhaust outlet at the top of smoke machine, under the drive of blower 200, the mating indoor flue gas of burning is excluded, the pressure-tapping nozzle 300
The outside of the exhaust fume collecting hood backboard 102 is arranged in bracket 103, for fixing the pressure-tapping nozzle 300, and limits pressure-tapping nozzle 300
Direction on axially and radially, the middle part of the exhaust fume collecting hood foreboard 101 are provided with first through hole 1011, the exhaust fume collecting hood backboard
102 middle part is provided with the second through-hole 1021, is provided with third through-hole 1031 in the middle part of pressure-tapping nozzle 300, the first through hole 1011,
Second through-hole 1021, third through-hole 1031 are provided in impeller 201 relatively, and on vertical straight line, the pressure-tapping nozzle 300
Across the first through hole 1011, the second through-hole 1021 and third through-hole 1031, and with first through hole 1011 and third through-hole
What 1031 tight fits, the first through hole 1011 and the third through-hole 1031 were circumferentially arranged with the pressure-tapping nozzle 300 respectively
Step 302 is fitted close, and by the limit of first through hole 1011 and the second through-hole 1021, the pressure-tapping nozzle 300 is fixed on described
On exhaust fume collecting hood 100, in assembling process, side and institute of the step 302 being arranged on the pressure-tapping nozzle 300 in first through hole 1011
The abutting of exhaust fume collecting hood foreboard 101 is stated, while being abutted in the side of the second through-hole 1021 with the exhaust fume collecting hood backboard 102, is taken described
The flat mouth 301 of 300 front end of pressure mouth is fixed on the inside of impeller 201, is conducive to the air pressure for accurately collecting 201 inside of impeller.
Further, the both ends of the pressure-tapping nozzle 300 are provided with guide surface 303, and the guide surface 303 is by middle part to end
Portion extends internally, in the state that the pressure-tapping nozzle 300 is installed, first through hole 1011, the second through-hole 1021 and third through-hole 1031
The guide surface 303 is extended through, moves, is easily installed along the guide surface 303.
Further, 1031 side of third through-hole is provided with confined planes 1032, the platform of 300 rear end of pressure-tapping nozzle
Rank 302 abuts with the confined planes 1032, and the rear end of the pressure-tapping nozzle 300 is cooperated by step 302 and the confined planes 1032,
The direction of the pressure-tapping nozzle 300 is limited, convenient for the assembly of pressure-tapping nozzle 300, while after promoting the pressure-tapping nozzle 300 after the assembly is completed
The stability at end.
Further, 1011 side of first through hole is provided with boss, and a part of the pressure-tapping nozzle 300 passes through institute
Boss is stated, and is fitted close with the boss, the boss is arranged in the inside of the exhaust fume collecting hood foreboard 101, limits radially
The activity for making the pressure-tapping nozzle 300, prevents pressure-tapping nozzle 300 from jolting, and causes 301 surrounding of flat mouth to generate air-flow, is further promoted and taken
The effect of pressure mouth 300 and the exhaust fume collecting hood 100 assembly.
Further, the exhaust fume collecting hood foreboard 101 is additionally provided with flange 1012, and the flange 1012 is arranged in the collection
The outside of petticoat pipe 100, and with blower 200 to corresponding, under the cooperation of the flange 1012, flue gas passes through exhaust fume collecting hood foreboard 101
Gas outlet when be rectified, prevent flue gas from occurring turbulent flow, in the state of no flange 1012, cigarette around the impeller 201
For gas through gas outlet at the thin plate around gas outlet, flowing instability will generate the movement of turbulence prediction spiral case inside smoke
State, and the thin plate around gas outlet is caused to generate vibration, secondary effect is caused to the flowing of flue gas.
Further, one end setting that the pressure-tapping nozzle 300 extends on the inside of the impeller of the blower 200 is turned over described
Between side 1012 and the impeller of the blower 200., the air pressure around the flange 1012 because of the effect that flange 1012 rectifies,
It will accelerate the flowing of flue gas, flow of flue gas fast speed causes air pressure to be lower than average gas pressure inside spiral case, the flange 1012
There is error lower than the air pressure that the pressure-tapping nozzle 300 prevents 300 flat mouth 301 of pressure-tapping nozzle from going out in height.
Further, the pressure taking structure further includes gasket 400, and the gasket 400 is socketed in the flange
1012 outside matches with the shape of the exhaust fume collecting hood foreboard 101, prevent the exhaust fume collecting hood 100 in other positions with institute
It states and generates gap between 200 spiral case of blower and leak cigarette, guarantee sealing effect around flabellum, prevent occurring turbulent flow inside blower 200,
Pressure is caused to fluctuate, the gasket 400 is provided with anti-transfer part 401, the anti-transfer part 401 and the exhaust fume collecting hood foreboard
The irregular area 1013 being arranged on 101 is adapted, and the gasket 400 on the anti-transfer part 401 and exhaust fume collecting hood 100 by setting
The irregular area 1013 set is clamped, and prevents the gasket 400 from displacement destructor leakproofness occur.
Further, gasket 400 is additionally provided with positioning along 402, and the positioning is along 402 and the exhaust fume collecting hood foreboard
101 top edge is adapted, and under assembled state, matching is docked with the exhaust fume collecting hood foreboard 101 along 402 by positioning, facilitate described in
Gasket 400 positions, the reliability that lift-off seal pad 400 is installed.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of pressure taking structure, it is characterised in that: including exhaust fume collecting hood 100, blower 200 and pressure-tapping nozzle 300, the blower 200 is set
It sets in one end of the exhaust fume collecting hood 100, one end of the pressure-tapping nozzle 300 through the exhaust fume collecting hood 100 and extends to the blower
On the inside of 200 impeller, and the other end of the pressure-tapping nozzle 300 is arranged outside exhaust fume collecting hood 100.
2. a kind of pressure taking structure according to claim 1, it is characterised in that: the end of the pressure-tapping nozzle is provided with flat mouth
301, the both ends of the pressure-tapping nozzle 300 are provided with guide surface 303, and the guide surface 303 is from middle part to the flat mouth 301 to described
The central axis direction of pressure-tapping nozzle 300 extends.
3. a kind of pressure taking structure according to claim 1, it is characterised in that: the middle part of the pressure-tapping nozzle 300 is provided with two
Group step 302, step 302 described in two groups are fixedly connected with the exhaust fume collecting hood 300.
4. a kind of pressure taking structure according to claim 1, it is characterised in that: the exhaust fume collecting hood 100 includes exhaust fume collecting hood backboard
102, exhaust fume collecting hood foreboard 101 and pressure-tapping nozzle bracket 103, the fixed company of air intake of the exhaust fume collecting hood foreboard 101 and the blower 200
It connects, the exhaust fume collecting hood backboard 102 is oppositely arranged with the exhaust fume collecting hood foreboard 101, and the pressure-tapping nozzle bracket 103 is arranged in the collection
The outside of petticoat pipe backboard 102, the middle part of the exhaust fume collecting hood foreboard 101 are provided with the first logical 1011 holes, the exhaust fume collecting hood backboard 102
Middle part be provided with the second through-hole 1021, third through-hole 1031 is provided in the middle part of pressure-tapping nozzle, the first through hole 1011, second is logical
Hole 1021, third through-hole 1031 are corresponding, and the pressure-tapping nozzle 300 is through the first through hole 1011, the second through-hole 1021 and the
Three through-holes 1031, and be fitted close with first through hole 1011 and third through-hole 1031, the first through hole 1011 and the third
The step 302 that through-hole 1031 is circumferentially arranged with the pressure-tapping nozzle 300 respectively is fitted close.
5. a kind of pressure taking structure according to claim 4, it is characterised in that: 1031 side of the third through-hole setting is limited
The step 302 of plane 1032,300 one end of pressure-tapping nozzle setting is abutted with the confined planes 1032.
6. a kind of pressure taking structure according to claim 4, it is characterised in that: 1031 side of first through hole is provided with convex
Platform, one end of the pressure-tapping nozzle 300 passes through the boss, and is fitted close with the boss.
7. a kind of pressure taking structure according to claim 4, it is characterised in that: the exhaust fume collecting hood foreboard 101, which is additionally provided with, to be turned over
The side of the exhaust fume collecting hood 100 is arranged in side 1012, the flange 1012, and corresponding with blower 200.
8. a kind of pressure taking structure according to claim 7, it is characterised in that: the pressure-tapping nozzle 300 extends to the blower
One end on the inside of 200 impeller is arranged between the flange 1012 and the impeller of the blower 200.
9. a kind of pressure taking structure according to claim 7, it is characterised in that: the pressure taking structure further includes gasket 400,
The gasket is socketed in the outside of the flange 1012, and the gasket 400 is provided with anti-transfer part 401, the anti-transfer part 401
It is adapted with 1013 domain of region of disorder being arranged on the exhaust fume collecting hood foreboard 101.
10. a kind of pressure taking structure according to claim 9, it is characterised in that: gasket is additionally provided with positioning along 402, institute
It is adaptable with the top edge of the exhaust fume collecting hood foreboard 101 along 402 to state positioning.
Priority Applications (1)
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CN201810393564.4A CN110185646B (en) | 2018-04-27 | 2018-04-27 | Pressure taking structure |
Applications Claiming Priority (1)
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CN201810393564.4A CN110185646B (en) | 2018-04-27 | 2018-04-27 | Pressure taking structure |
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CN110185646A true CN110185646A (en) | 2019-08-30 |
CN110185646B CN110185646B (en) | 2024-04-09 |
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CN201810393564.4A Active CN110185646B (en) | 2018-04-27 | 2018-04-27 | Pressure taking structure |
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CN101042303A (en) * | 2006-03-22 | 2007-09-26 | 赵树行 | V-shaped cone flowmeter with porous pressure sampling |
KR20120086900A (en) * | 2011-01-27 | 2012-08-06 | 주식회사 힘펠 | High performance ventilator |
CN202303918U (en) * | 2011-10-21 | 2012-07-04 | 中山华帝燃具股份有限公司 | Fan pressure-tapping nozzle |
CN202361458U (en) * | 2011-12-13 | 2012-08-01 | 周建达 | Oblique-arc elevating range hood |
CN103528725A (en) * | 2013-10-28 | 2014-01-22 | 北京石油化工学院 | Minitype tension sensor |
CN205245578U (en) * | 2015-11-19 | 2016-05-18 | 广东万家乐燃气具有限公司 | Gas heater wind pressure sample mouth mounting structure |
WO2017133371A1 (en) * | 2016-02-01 | 2017-08-10 | 宁波方太厨具有限公司 | Ceiling-mounted exhaust hood |
CN206831632U (en) * | 2017-05-09 | 2018-01-02 | 华帝股份有限公司 | Constant air volume range hood |
CN207032790U (en) * | 2017-08-11 | 2018-02-23 | 李庆其 | A kind of aluminium alloy decorative bar fixing device |
CN209025876U (en) * | 2018-04-27 | 2019-06-25 | 华帝股份有限公司 | Pressure measuring structure |
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