CN203856778U - Check valve for air conditioner fan outlet - Google Patents
Check valve for air conditioner fan outlet Download PDFInfo
- Publication number
- CN203856778U CN203856778U CN201420294487.4U CN201420294487U CN203856778U CN 203856778 U CN203856778 U CN 203856778U CN 201420294487 U CN201420294487 U CN 201420294487U CN 203856778 U CN203856778 U CN 203856778U
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- CN
- China
- Prior art keywords
- blade
- blades
- adjacent
- fan outlet
- stamping steel
- 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
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Abstract
A check valve for an air conditioner fan outlet comprises an outer frame and a plurality of blades, the length direction of the blades is parallel to the horizontal plane, the blades are distributed at intervals in the direction perpendicular to the horizontal plane, the two ends of the upper side of each blade are connected into the outer frame through blade shafts, the width of the blades is larger than the distance between every two adjacent blade shafts, the lower side edges of the blades are respectively connected with a sealing strip, the sealing strips extend in the length direction of the blades, and the sealing strips are equal to the blades in length, and the sealing strips protrude in the direction of the adjacent blade shafts below the blades. When the blades are at the natural hanging positions, the sealing strips are arranged between the lower side back faces of the blades and the upper side front faces of the adjacent lower blades. The blades are made of aluminum sectional materials, and are provided with grooves in the length direction, and the sealing strips are embedded in the grooves. Every two adjacent blades are sealed through the sealing strips, the sealing effect is improved, meanwhile, the collision between the blades is buffered, and noise caused by closing of the blades is removed.
Description
Technical field
The utility model relates to mechanical field, relates in particular to ventilating machinary, particularly a kind of safety check for air-conditioning draught fan outlet.
Background technique
Central air-conditioner is generally equipped with safety check at fan outlet place, flows backwards with air-flow after preventing blower fan stall.In prior art, safety check is to carry out throttle down by blade deadweight and weight, utilizes its part being stacked to seal between blade and blade, is stacked when bad and can causes serious leaking out.After the unexpected stall of blower fan, blade moment closes, and blade is made up of metal village material, and blade and blade bump against can produce very large noise; And in some spaces compact especially occasion, do not allow valve body to have anything outward, the weight of safety check can affect its installation.
Model utility content
The purpose of this utility model is to provide a kind of safety check for air-conditioning draught fan outlet, the described this safety check for air-conditioning draught fan outlet leaks out serious will solve prior art air-conditioning fan outlet closure of check ring time, blade collision noise, weight occupy the technical problem of installing space.
This safety check for air-conditioning draught fan outlet of the present utility model, comprise housing and the blade of more than two number, the length direction of described blade is all parallel to horizontal plane, blade is along spaced apart perpendicular to the direction of horizontal plane, the two ends of any one blade upside are all connected in housing by sharf separately, the width of any one blade is all greater than the distance between two adjacent sharfs, wherein, the lower edge place of any one blade is all connected with a Stamping Steel Ribbon separately, described Stamping Steel Ribbon extends and has with blade the length equating along the length direction of blade, Stamping Steel Ribbon is towards the direction projection of the adjacent sharf in blade below.
Further, blade is made up of aluminium section bar, and the downside of described aluminium section bar is provided with groove along the length direction of blade, and described Stamping Steel Ribbon is embedded in described groove.
Further, when blade is positioned at nature and hangs down position, described Stamping Steel Ribbon the downside back side of this blade and below between the upside front of adjacent blade.
Working principle of the present utility model is: in the time of fan starting, air-flow reaches certain pressure, and air-flow is opened blade; In the time that blower fan cuts out, blade is closed automatically by gravity, and the Stamping Steel Ribbon of blade and lower leaflet are drawn close overlapping, realizes sealing, and Stamping Steel Ribbon provides buffering, can not produce very large noise, and has greatly reduced system air leakage amount.
The utility model and prior art are compared, and its effect is actively with obvious.The utility model arranges Stamping Steel Ribbon in the blade lower end of the safety check of air-conditioning draught fan outlet, by can adjacent two blades being sealed resistant to elevated temperatures Stamping Steel Ribbon, improve sealing effect, utilize the collision between Stamping Steel Ribbon buffering blade simultaneously, eliminate noise when blade is closed, greatly reduced the probability of gas to external leakage.
Brief description of the drawings
Fig. 1 is the structural representation of the safety check for air-conditioning draught fan outlet of the present utility model.
Fig. 2 be the safety check for air-conditioning draught fan outlet of the present utility model left view.
Embodiment
Embodiment 1:
As depicted in figs. 1 and 2, safety check for air-conditioning draught fan outlet of the present utility model, it comprises housing 1 and blade 2, wherein, described blade 2 is made up of aluminium section bar, blade 2 upper ends and sharf 4 are rotatably connected, the two ends of described sharf 4 are connected with bracing strut 5, described bracing strut 5 is arranged in described housing 1, blade 2 from top to bottom interval arranges, the end that blade is closed state and upper and lower adjacent two blades in the time of not air-out of blower fan overlaps mutually, is provided with Stamping Steel Ribbon 3 along its length in described blade lower end.
Further, be provided with groove along its length in described blade lower end, described Stamping Steel Ribbon is embedded in described groove.
Further, described housing consists of riveted joint galvanized steel plain sheet.
Concrete, in the time of fan starting, air-flow reaches certain pressure, and air-flow is opened blade; In the time that blower fan cuts out, blade is closed automatically by gravity, above the Stamping Steel Ribbon of blade draw close with the Metal Phase of blade below, can play sealing and can not produce again very large noise.Because outside does not have original linkage mechanism, make blade need not pass housing, greatly reduce the probability of gas to external leakage.Blade adopts aluminium section bar, shortens the delivery cycle; Aluminium section bar is set up groove, embeds special resistant to elevated temperatures Stamping Steel Ribbon, prevents the noise that blade collision produces and reduces leak-down rate; Cancel outer link structure, by blade deadweight throttle down, make more compact structure.
Claims (3)
1. the safety check for air-conditioning draught fan outlet, comprise housing and the blade of more than two number, the length direction of described blade is all parallel to horizontal plane, blade is along spaced apart perpendicular to the direction of horizontal plane, the two ends of any one blade upside are all connected in housing by sharf separately, the width of any one blade is all greater than the distance between two adjacent sharfs, it is characterized in that: the lower edge place of any one blade is all connected with a Stamping Steel Ribbon separately, described Stamping Steel Ribbon extends and has with blade the length equating along the length direction of blade, Stamping Steel Ribbon is towards the direction projection of the adjacent sharf in blade below.
2. the safety check for air-conditioning draught fan outlet as claimed in claim 1, is characterized in that: blade is made up of aluminium section bar, and the downside of described aluminium section bar is provided with groove along the length direction of blade, and described Stamping Steel Ribbon is embedded in described groove.
3. the safety check for air-conditioning draught fan outlet as claimed in claim 1, is characterized in that: when blade is positioned at nature and hangs down position, described Stamping Steel Ribbon the downside back side of this blade and below between the upside front of adjacent blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420294487.4U CN203856778U (en) | 2014-06-05 | 2014-06-05 | Check valve for air conditioner fan outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420294487.4U CN203856778U (en) | 2014-06-05 | 2014-06-05 | Check valve for air conditioner fan outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856778U true CN203856778U (en) | 2014-10-01 |
Family
ID=51606632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420294487.4U Expired - Fee Related CN203856778U (en) | 2014-06-05 | 2014-06-05 | Check valve for air conditioner fan outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591098A (en) * | 2018-06-01 | 2018-09-28 | 威海克莱特菲尔风机股份有限公司 | Low noise explosion-proof fan |
| CN111396346A (en) * | 2020-03-19 | 2020-07-10 | 浙江上风高科专风实业有限公司 | Check valve convenient to control for roof type fan |
-
2014
- 2014-06-05 CN CN201420294487.4U patent/CN203856778U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591098A (en) * | 2018-06-01 | 2018-09-28 | 威海克莱特菲尔风机股份有限公司 | Low noise explosion-proof fan |
| CN108591098B (en) * | 2018-06-01 | 2024-02-20 | 威海克莱特菲尔风机股份有限公司 | Low-noise explosion-proof fan |
| CN111396346A (en) * | 2020-03-19 | 2020-07-10 | 浙江上风高科专风实业有限公司 | Check valve convenient to control for roof type fan |
| CN111396346B (en) * | 2020-03-19 | 2021-02-19 | 浙江上风高科专风实业有限公司 | Check valve convenient to control for roof type fan |
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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: 20141001 Termination date: 20200605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |