CN203082391U - Noise reduction trapezoid return duct - Google Patents
Noise reduction trapezoid return duct Download PDFInfo
- Publication number
- CN203082391U CN203082391U CN 201220722493 CN201220722493U CN203082391U CN 203082391 U CN203082391 U CN 203082391U CN 201220722493 CN201220722493 CN 201220722493 CN 201220722493 U CN201220722493 U CN 201220722493U CN 203082391 U CN203082391 U CN 203082391U
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- CN
- China
- Prior art keywords
- trapezoid
- return duct
- noise reduction
- trapezoidal
- noise
- 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.)
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Abstract
The utility model relates to a return duct, in particular to a noise reduction trapezoid return duct. The main purpose is to overcome the defects in the prior art and provide the noise reduction trapezoid return duct which can effectively reduce noise. The technical problems are solved according to the technical scheme: the noise reduction trapezoid return duct comprises an air inlet and a trapezoid return duct body and is characterized in that a sponge plastic layer is arranged inside the wall of the trapezoid return duct body. The noise reduction trapezoid return duct is simple in structure. The noise reduction trapezoid return duct is provided with the sponge plastic layer so as to absorb wind impact on the wall of the duct and reduce the noise, the air inlet of the trapezoid return duct is high in air inlet capacity, sucked air becomes smoother with moving toward the inside of the duct, and therefore, the generated noise is died away.
Description
Technical field
The utility model relates to a kind of backwind tube, and concrete is the trapezoidal backwind tube of a kind of noise reduction.
Background technique
The modern production space, large-scale air-conditioning system and temperature control wind control system use in a large number, all changing wind with backwind tube between them carries and extracts, often these backwind tubes are because wind speed comparatively fast causes irony steel shell to produce vibrations in the pipe, and bring a large amount of noises because of air flows friction shell itself, what noisy production influence was serious causes noise pollution to the workshop surrounding environment, also makes troubles to produce commander in the workshop.
Summary of the invention
Main purpose of the present utility model is to overcome deficiency of the prior art, provides a kind of noise reduction trapezoidal backwind tube, effectively the flat noise reduction.
Above-mentioned technical problem of the present utility model is implemented by the following technical programs: the trapezoidal backwind tube of a kind of noise reduction, comprise intake grill and trapezoidal backwind tube, and it is characterized in that being provided with the sponge plastic layer in the tube wall of described trapezoidal backwind tube.
As preferably, described trapezoidal backwind tube, the four sides tube wall is made up of the face of three 90 degree faces and angle of inclination 15 degree.
In sum, the utility model compared with prior art has following advantage:
The utility model is simple in structure, contains the sponge plastic layer and can absorb the impact flat noise reduction of wind to tube wall, and trapezoidal backwind tube intake grill air draught power is strong, the air that the is inhaled into noise of the mild more generation disappearance that diminishes gradually of moving in pipe more.
Description of drawings
Fig. 1 overall structure figure of the present utility model.
Among the figure: 1, intake grill, 2, trapezoidal backwind tube, 3, the sponge plastic layer.
Embodiment
Below by embodiment, in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail:
As shown in Figure 1, the trapezoidal backwind tube of a kind of noise reduction comprises intake grill 1 and trapezoidal backwind tube 2, it is characterized in that being provided with sponge plastic layer 3 in the tube wall of described trapezoidal backwind tube.Air in blower fan and the operation of air conditioner extraction tube, cause negative pressure increase in the pipe, the intake grill surrounding space of trapezoidal backwind tube compensates the return air inner air tube and is inhaled in the pipe, friction to tube wall during the air high-speed motion all can be absorbed by the sponge plastic layer, as blast be enhanced 〉=can clash into tube wall during 700pa to cause vibrations, also can be because of sponge plastic layer buffer function, body is difficult to produce vibration sound.Described trapezoidal backwind tube, the four sides tube wall is made up of the face of three 90 degree faces and angle of inclination 15 degree, and trapezoidal backwind tube can play the air port and concentrate effect, can cause intake grill suction to strengthen; Reached the required technique effect of the utility model thus.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (2)
1. the trapezoidal backwind tube of noise reduction comprises intake grill (1) and trapezoidal backwind tube (2), it is characterized in that being provided with sponge plastic layer (3) in the tube wall of described trapezoidal backwind tube.
2. the trapezoidal backwind tube of a kind of noise reduction according to claim 1 is characterized in that described trapezoidal backwind tube, and the four sides tube wall is made up of the face of three 90 degree faces and angle of inclination 15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722493 CN203082391U (en) | 2012-12-25 | 2012-12-25 | Noise reduction trapezoid return duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722493 CN203082391U (en) | 2012-12-25 | 2012-12-25 | Noise reduction trapezoid return duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082391U true CN203082391U (en) | 2013-07-24 |
Family
ID=48828229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220722493 Expired - Fee Related CN203082391U (en) | 2012-12-25 | 2012-12-25 | Noise reduction trapezoid return duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747856A (en) * | 2013-12-26 | 2015-07-01 | 海尔集团公司 | Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner |
| CN109114785A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Air duct module and air conditioner indoor unit with same |
-
2012
- 2012-12-25 CN CN 201220722493 patent/CN203082391U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747856A (en) * | 2013-12-26 | 2015-07-01 | 海尔集团公司 | Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner |
| CN109114785A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Air duct module and air conditioner indoor unit with same |
| CN109114785B (en) * | 2018-09-30 | 2024-04-05 | 珠海格力电器股份有限公司 | Air duct module and air conditioner indoor unit with same |
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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: 20130724 Termination date: 20141225 |
|
| EXPY | Termination of patent right or utility model |