CN109237761A - Inside holding muffling air duct - Google Patents
Inside holding muffling air duct Download PDFInfo
- Publication number
- CN109237761A CN109237761A CN201811004934.7A CN201811004934A CN109237761A CN 109237761 A CN109237761 A CN 109237761A CN 201811004934 A CN201811004934 A CN 201811004934A CN 109237761 A CN109237761 A CN 109237761A
- Authority
- CN
- China
- Prior art keywords
- weather strip
- plate
- tube body
- type weather
- flange
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0263—Insulation for air ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Duct Arrangements (AREA)
Abstract
The invention discloses a kind of inside holding muffling air ducts in air hose field, including tube body, the side wall of tube body successively includes lamina rara externa from outside to inside, insulating layer, filter layer and inner plating, several perforation are offered on inner plating, tube body end is equipped with and the integrally formed plate flange altogether of lamina rara externa, the end of tube body is equipped with F type weather strip, F type weather strip includes two lateral wing plates and a vertical wing plate, inner plating, filter layer, the end of insulating layer is protruded between two lateral wing plates, the side of vertical wing plate towards lateral wing plate sticks on the end face of total plate flange, on the inner wall that the side of lateral wing plate towards vertical wing plate in the middle part of F type weather strip sticks on outer panel.The present invention can solve the problems, such as that there are noises in existing air hose use process.
Description
Technical field
The present invention relates to air hose fields, and in particular to a kind of inside holding muffling air duct.
Background technique
The air hose of air-conditioning system is all using the additional rubber and plastic cotton insulating layer of galvanized steel plain sheet, as shown in Figure 1, to keep wind at present
Inner air tube temperature and humidity, this air hose are all that in construction, scene installs insulating layer additional, thus there are more disadvantages:
1, the end of air hose forms total plate flange using galvanized steel plain sheet, passes through spiral shell between total plate flange when two section air hoses connect
It tethers and connects, rigid contact poor sealing effect between two flanges easily generates cold bridge in junction, it is difficult to guarantee the temperature in air hose
And humidity.
2, the external air hose of insulating layer is not fixed easily, and scene installs insulating layer additional, and difficulty of construction is big, and installation process is complicated, cost
It is high.
3, external insulating layer is easy to damage, and cold bridge is generated after falling off, and air-line system tends to have dew condensation phenomenon, so that in air hose
It is difficult to keep the temperature and humidity of requirement.
4, external insulating layer appearance in the case where being used for no furred ceiling is not beautiful enough.
5, air hose internal layer is opposed flattened smooth, and air-flow is by that can generate noise.
6, air hose inner wall is oxidizable, and accumulates dust, and humid air generates mould easily in air hose inner wall cooperating microorganisms in case of wet
Or bacterium influences human health to destroy air quality in air hose.
Summary of the invention
The invention is intended to provide inside holding muffling air duct, to solve the problems, such as that there are noises in existing air hose use process.
In order to achieve the above objectives, basic technology scheme of the invention is as follows: inside holding muffling air duct, including tube body, tube body
Side wall from outside to inside successively include lamina rara externa, insulating layer, filter layer and inner plating, offer several perforation on inner plating, manage
Body end portion, which is equipped with, is equipped with F type weather strip with the integrally formed plate flange altogether of lamina rara externa, the end of tube body, and F type weather strip includes two
An a transverse direction wing plate and vertical wing plate, inner plating, filter layer, insulating layer end protrude between two lateral wing plates, erect
It is sticked on the end face of total plate flange to the side of wing plate towards lateral wing plate, the lateral wing plate direction in the middle part of F type weather strip is perpendicular
On the inner wall for sticking on outer panel to the side of wing plate.
The principle of this programme is: when practical application, tube body is as main structure, outer layer protection knot of the lamina rara externa as tube body
Structure and support construction, provide for air hose and are easily installed outer wall fixed and with preferable appearance, and insulating layer is protected as insulation construction
Hold the temperature and humidity of gas in tube body, filter layer is used to keep the cleaning on the inside of tube body, avoids breeding bacterium, mould on the inside of tube body
Bacterium, inner plating support to form the flow channel of gas as the inside of tube body, and provide support to filter layer, insulating layer.Internal layer
Perforation on plate as noise elimination structure, air-flow by during weaken the noise that air-flow generates inboard wall of tube body impact.Altogether
The plate flange connection structure mutual as multiple tube bodies is integrally formed so that altogether between plate flange and lamina rara externa with lamina rara externa
There is no gap, can avoid forming cold bridge between lamina rara externa together plate flange.Closing in knot of the F type weather strip as tube body end
Structure can hold insulating layer, filter layer and the inner plating on the inside of lamina rara externa by the groove position between two lateral wing plates
Portion's shell nosing treatment guarantees the stabilization of tube wall multilayered structure.The setting of vertical wing plate and its together plate end face of flange recline
Setting can guarantee that the end face of tube body when two tube body connections is smooth and side wall ends can be bonded completely, is seamless by vertical wing plate
Gap offsets, and avoidable two tube bodies are total to plate flanged joint when connecting but there are gaps to cause in tube body between tube wall end
Gas the problems such as directly plate flange contact forms cold bridge moisture condensation and connection unstable together, without to tube wall end
Closing in parts are adjusted repeatedly.Also, to connect between the total plate flange of latter two tube body by vertical wing plate there are gap,
Guarantee altogether plate flanged joint when bolt have certain compression space so that altogether plate flange be bolted it is stronger,
Vertical wing plate can be clamped, guarantee the stabilization connected between two tube bodies.Lateral wing plate and outer layer in the middle part of F type weather strip
Plate inner sidewall fitting can by the angle between lateral wing plate and vertical wing plate to the angle between lamina rara externa together plate flange into
Row support, guarantees the stability connected between tube body end.
The advantages of this programme, is:
1. increasing noise elimination function on the basis of common air hose, system noise can effectively reduce；
2. eliminating air hose scene thermal insulation construction process, live air hose installation effectiveness is effectively improved；
3. air hose and heat preservation are all made of the processing of fully-automatic production assembly line, product quality is controllable；
4. air hose appearance is more excellent, insulating layer is hardly damaged, and is more convenient installation and is fixed；
5. the junction of air hose will not generate cold bridge, be not likely to produce moisture condensation；
6. being not easy cooperating microorganisms in air hose, air quality is protected in air hose.
Further, several bar for line for passing through filter layer and being inserted into insulating layer are fixed on inner plating.As preferably in this way
Setting can be fixed insulating layer, filtering layer material by protecting steady nail, avoid insulating layer, filter layer material in outer laminate, interior
Sliding causes partial insulation effect poor between laminate, is also convenient for the installation of insulating layer.
Further, the end face of total plate flange is equipped with the flange padding of multiple strips, adopts between two neighboring flange padding
It is overlapped with stairstepping.As preferred flange padding for being carried out in total plate flanged joint to the gap between two total plate flanges
Sealing, avoids the gas in air hose from revealing from this and causes to condense, using trapezoidal overlapped mode makes two flange paddings it
Between intermediate location also there is preferable sealing performance.
Further, plate flange is rectangle altogether, and the corner of plate flange is equipped with connecting hole, the total plate of two neighboring tube body altogether
It is connected between the straight flange of flange by connector.It can be carried out by bolt as being preferably placed such that in the corner of total plate flange
Reliable and stable connection, and aperture is reduced at straight flange guarantees after the planarization of straight flange makes connection better tightness at straight flange.
Further, the corner of plate flange is equipped with multiple stop muscle from bending center outward radially, stop altogether
The height that muscle is located at bending central side is greater than the height for being located at plate flange periphery side altogether.As being preferably placed such that through stop muscle
The flange padding of avoidable corner is stretched elongated thinning when mounting flange padding, so that the thickness of flange padding is protected
It holds uniformly, guarantees that the leakproofness of corner is good during two total plate flanged joints, become by using radial and height
The structure of change can will be located at corner bending place during total plate flanged joint and squeeze the flange padding that thickens to total plate flange
Edge side is pushed, so that the flange padding thickness distribution of corner is uniform, so that being not likely to produce cold bridge, knot at plate angular rotation of flange altogether
Dew.
Further, connector is spring clip or jackscrew card.As being preferably placed such that acquisition is more easier, operate more square
Just, more quick to the connection of tube body.
Further, it is offered on tube body and gives a dinner for a visitor from afar mouthful port and connect device port, F type is also installed at mouthful port of giving a dinner for a visitor from afar and is kept out the wind
Item connects and is equipped with H type weather strip at device port, and H type weather strip includes three vertical connecting fin plates, connects at device port
Inner plating, filter layer, insulating layer end protrude into the opening of H type weather strip, middle part side of the H type weather strip far from tube body
Outer wall stick on the inner wall for connecing the lamina rara externa at device port.Preferably, mouthful port of giving a dinner for a visitor from afar connects for connecting air outlet
For device port for connecting the equipment such as blower, mouthful port of giving a dinner for a visitor from afar is vertical on the outside of tube body using reaching using F type weather strip
Wing plate connection and then connects air outlet at hose connector, gives a dinner for a visitor from afar mouthful port convenient for opening up on tube wall and does not have to process tube body
Side commutation can be carried out at T-type, it is ensured that the shape of tube body is smooth.It is convenient for connecting in the end of tube body using H type weather strip
With the equipment of tube body end face, by connecting fin plate in the same direction on H-shaped weather strip can the end of tube body do not pass through flange into
The connection of row equipment.
Further, three connecting fin plates, vertical wing plate and peace is offered in the lateral wing plate in the middle part of F type weather strip
Hole is filled, F type weather strip and H type weather strip pass through setting and the pulling rivet of mounting hole cooperation is fixed on tube body.As preferred
F type weather strip can be fixedly connected with by mounting hole in the lateral wing plate at middle part and pulling rivet with lamina rara externa by being arranged in this way,
Facilitating also can be realized stable connection while operation, connecting fin plate can be inside and outside tube wall on H type weather strip
Synchronized links, it is more stable, relatively reliable connective stability is provided hose adapter by vertical wing plate and connecting fin plate.
Further, F type weather strip and H type weather strip are that PVC material is made.As preferably in this way by F type weather strip
It will be separated inside air hose with lamina rara externa, total plate flange with H type weather strip, the thermal conductivity ratio of F type weather strip and H type weather strip
Lamina rara externa is low with plate flange altogether, and the temperature that can avoid gas in air hose passes through F type weather strip and H type weather strip by total plate flange
And the influence of lamina rara externa.
Further, lamina rara externa is galvanized steel plain sheet, and insulating layer is mineral wool, and filter layer is glass fiber felt, and inner plating is perforation plating
Zinc steel plate, flange padding are self-adhesion sponge plate.More preferable as preferred galvanized steel plain sheet environmental resistance, the service life is longer, glass
Cotton has excellent heat preservation, acoustic attenuation performance, and glass fiber felt has excellent strainability, and perforation galvanized steel plain sheet has by porous structure
There is excellent noise elimination effect, self-adhesion sponge plate can be installed conveniently, and have good heat-insulating and sealing performance.
Detailed description of the invention
Fig. 1 is the schematic diagram of background of invention；
Fig. 2 is the cross-sectional view of two tube bodies connection in the embodiment of the present invention 1；
Fig. 3 is the connection structure cross-sectional view of 1 middle tube body of the embodiment of the present invention and equipment, air port；
Fig. 4 is front view at plate angular rotation of flange total in the embodiment of the present invention 1；
Fig. 5 is the scheme of installation of spring clip in the embodiment of the present invention 1；
Fig. 6 is the scheme of installation of jackscrew card in the embodiment of the present invention 2.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: lamina rara externa 1, altogether plate flange 2, connecting hole 21, stop muscle 22, flange gasket
Material 23, insulating layer 3, filter layer 4, inner plating 5, bar for line 51, F type weather strip 6, lateral wing plate 61, vertical wing plate 62, H type gear
Wind item 7, connecting fin plate 71, hose connector 8, spring clip 9, jackscrew card 10.
Embodiment is substantially as shown in Fig. 2: inside holding muffling air duct, including rectangular tube body, the side wall of tube body from outside to
Inside successively include lamina rara externa 1, insulating layer 3, filter layer 4 and inner plating 5, offers several perforation on inner plating 5, lamina rara externa 1 is
Galvanized steel plain sheet, insulating layer 3 are mineral wool, and filter layer 4 is glass fiber felt, and inner plating 5 is perforation galvanized steel plain sheet, are fixed on inner plating 5
There are several bar for line 51 for passing through filter layer 4 and being inserted into insulating layer 3.Tube body end is equipped with and the integrally formed plate altogether of lamina rara externa 1
Flange 2, plate flange 2 is rectangular altogether, and the corner of plate flange 2 is equipped with connecting hole 21 altogether, as shown in connection with fig. 5, two neighboring pipe
It is connected between the straight flange of the total plate flange 2 of body by connector, connector is spring clip 9.The end face of plate flange 2 is equipped with four altogether
The flange padding 23 of a strip is overlapped using stairstepping between two neighboring flange padding 23, and the lap-joint of flange padding 23 keeps away
Connecting hole 21 is opened, flange padding 23 is self-adhesion sponge plate.As shown in connection with fig. 4, the corner of total plate flange 2 is equipped with multiple from bending
The stop muscle 22 that center radiates outward, the height that stop muscle 22 is located at bending central side, which is greater than, is located at 2 edge side of plate flange altogether
Height.The end of tube body is equipped with F type weather strip 6, and F type weather strip 6 includes two lateral wing plates 61 and a vertical wing plate 62,
Inner plating 5, filter layer 4, insulating layer 3 end protrude between two lateral wing plates 61, vertical wing plate 62 is towards lateral wing plate
61 side sticks on the end face of total plate flange 2, and the lateral wing plate 61 at the middle part of F type weather strip 6 is towards the side of vertical wing plate 62
Face paste leans against on the inner wall of outer panel.
It is offered on tube body and gives a dinner for a visitor from afar mouthful port and connect device port, as shown in connection with fig. 3, F is also installed at mouthful port of giving a dinner for a visitor from afar
Type weather strip 6 connects and is equipped with H type weather strip 7 at device port, and H type weather strip 7 includes three vertical connecting fin plates 71, connects
The end of inner plating 5, filter layer 4, insulating layer 3 at device port is protruded into the opening of H type weather strip 7, H type weather strip 7
The outer wall of middle part side far from tube body sticks on the inner wall for connecing the lamina rara externa at device port 1.
Three connecting fin plates 71, vertical wing plate 62 and peace is offered in the lateral wing plate 61 at the middle part of F type weather strip 6
Hole is filled, F type weather strip 6 and H type weather strip 7 are fixed on tube body by the way that the pulling rivet cooperated with mounting hole is arranged.F type keeps out the wind
Item 6 and H type weather strip 7 are that PVC material is made.
Specific implementation process is as follows: (1) material prepares, and the material thickness of galvanized steel plain sheet is in strict accordance with " heating ventilation and air-conditioning work
Journey construction quality accident specification " selection of GB 50243-2016 medium low pressure system；GB 2518-2008 Continuous Heat should be met simultaneously
Galvanized steel plain sheet and steel band requirement.
(2) pipe forming, a) single-lock welt can be used in the splicing of galvanized steel plain sheet, and the quadrangle combination of rectangular air duct or accessory uses
Joint angle seaming；B) seaming width and allowance should meet the requirement of following table depending on plate thickness.To single-lock welt at first piece
It is wide to be equal to seaming on plate, and is wide twice on second block of plate, i.e., it is wide to be equal to three times seaming for seaming allowance；Joint angle seaming exists
It is wide for seaming on first block of plate, it is that three times seaming is wide on second block of plate, seaming allowance is equal to four times of seaming width；C) pipe is closed
Centrifugally glass-wool plate is first covered in microwell plate inside casing surrounding and the fixation for being stained with glass fiber felt, it is ensured that centrifugally glass-wool plate when molding
It is attached with air hose inner surface close；D) air hose inner surface should be close to when fixed weather strip, and is maintained at same with air duct flange end face
One plane.
(3) when air hose is installed, flanged joint padding uses self-adhesion sponge plate；Flange padding 23 keeps out the wind when pasting with F type
Item 6 is concordant；23 lap-joint of flange padding is arranged on the straight flange of total plate flange 2, and corner limits flange gasket by stop muscle 22
The stretching and movement of material 23 avoid the stretching of flange padding 23 and flange padding 23 thickness in corner are caused to be less than elsewhere
Thickness makes corner heat insulation effect difference generate cold bridge and moisture condensation.When two tube body connections, altogether between the connecting hole 21 of plate flange 2
It is bolted, is locked at the straight flange of plate flange 2 by spring clip 9 altogether, spacing of the spring clip 9 away from total 2 both ends of plate flange≤
150mm, the spacing between spring clip 9 are 150mm.Using when opening up port on tube wall with air port and connecting installation, connecing
F type weather strip 6 is installed, the lateral wing plate 61 at 6 middle part of F type weather strip is fixed on the outer layer of tube body by pulling rivet at the port of air port
On plate 1, vertical wing plate 62 is connect with air port again by rivet interlacement hose connector 8, hose connector 8.Using by the end of tube body
When as the port connecting with equipment, H type weather strip 7, the connecting fin plate of the inside and outside two sides of tube wall are installed in the end of tube body
71 are fixed on tube body by pulling rivet, another connecting fin plate 71 passes through rivet interlacement hose connector 8 and equipment.
Embodiment 2, the present embodiment is the difference from embodiment 1 is that connector is jackscrew card 10,10 mounting structure of jackscrew card
As shown in Figure 6.
Using inside holding muffling air duct provided by the invention, tested through acoustic attenuation performance, as a result as follows:
As it can be seen that inside holding muffling air duct provided by the invention can guarantee in the case where internal gas has different wind speed
Excellent acoustic attenuation performance, can effectively reduce system noise.
Claims (10)
1. inside holding muffling air duct, it is characterised in that: including tube body, the side wall of the tube body successively includes outer layer from outside to inside
Plate, insulating layer, filter layer and inner plating offer several perforation on the inner plating, and tube body end is equipped with and lamina rara externa one
Molding plate flange altogether, the end of tube body are equipped with F type weather strip, and the F type weather strip includes that two lateral wing plates and one are perpendicular
To wing plate, the inner plating, filter layer, insulating layer end protrude between two lateral wing plates, the vertical wing plate direction
The side of lateral wing plate sticks on the end face of plate flange altogether, and lateral wing plate in the middle part of F type weather strip is towards vertical wing plate
Side stick on the inner wall of outer panel.
2. inside holding muffling air duct according to claim 1, it is characterised in that: be fixed with several pass through on inner plating and filter
Layer and the bar for line for being inserted into insulating layer.
3. inside holding muffling air duct according to claim 2, it is characterised in that: the end face of the plate flange altogether is equipped with more
The flange padding of a strip is overlapped using stairstepping between two neighboring flange padding.
4. inside holding muffling air duct according to claim 3, it is characterised in that: the plate flange altogether is rectangle, altogether plate method
Blue corner is equipped with connecting hole, is connected between the straight flange of the total plate flange of two neighboring tube body by connector.
5. inside holding muffling air duct according to claim 4, it is characterised in that: the corner of the plate flange altogether is equipped with more
A stop muscle from bending center outward radially, the height that stop muscle is located at bending central side, which is greater than, is located at plate flange altogether
The height of edge side.
6. inside holding muffling air duct according to claim 5, it is characterised in that: the connector is spring clip or jackscrew
Card.
7. inside holding muffling air duct according to claim 6, it is characterised in that: offer a mouthful port of giving a dinner for a visitor from afar on the tube body
With connect device port, F type weather strip is also installed, described connect is equipped with H type weather strip at device port, institute at mouthful port of giving a dinner for a visitor from afar
Stating H type weather strip includes three vertical connecting fin plates, the end of the inner plating connect at device port, filter layer, insulating layer
Portion protrudes into the opening of H type weather strip, and the outer wall of middle part side of the H type weather strip far from the tube body sticks on described
On the inner wall for connecing the lamina rara externa at device port.
8. inside holding muffling air duct according to claim 7, it is characterised in that: three connecting fin plates, described vertical
Wing plate and mounting hole is offered in the lateral wing plate in the middle part of F type weather strip, the F type weather strip and H type weather strip are equal
It is fixed on tube body by the way that the pulling rivet cooperated with mounting hole is arranged.
9. inside holding muffling air duct according to claim 8, it is characterised in that: the F type weather strip and H type weather strip are equal
It is made of PVC material.
10. any inside holding muffling air duct according to claim 1~9, it is characterised in that: the lamina rara externa is galvanized steel
Plate, the insulating layer are mineral wool, and the filter layer is glass fiber felt, and the inner plating is perforation galvanized steel plain sheet, the flange gasket
Material is self-adhesion sponge plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004934.7A CN109237761A (en) | 2018-08-30 | 2018-08-30 | Inside holding muffling air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004934.7A CN109237761A (en) | 2018-08-30 | 2018-08-30 | Inside holding muffling air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109237761A true CN109237761A (en) | 2019-01-18 |
Family
ID=65069930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811004934.7A Pending CN109237761A (en) | 2018-08-30 | 2018-08-30 | Inside holding muffling air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237761A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202733219U (en) * | 2012-03-21 | 2013-02-13 | 北京瀚江尤科建材有限公司 | Noise elimination sound insulation high hydrophobic environment-friendly air duct |
| CN204267323U (en) * | 2014-10-27 | 2015-04-15 | 江西首普实业有限公司 | A kind of high pressure blower air intake pipe |
| CN204717176U (en) * | 2014-12-31 | 2015-10-21 | 天津市五洲机电设备安装有限公司 | Have flange spiral shell of one's own and connect airduct |
| KR101569322B1 (en) * | 2015-05-01 | 2015-11-13 | 이용호 | Noise reduction type duct |
| CN105736874A (en) * | 2016-05-12 | 2016-07-06 | 陕西建工安装集团有限公司 | Compensation type air pipe leakage prevention structure of ventilation and air conditioning system and air pipe section machining method |
| CN205860399U (en) * | 2016-07-30 | 2017-01-04 | 浙江天诚中央空调工程有限公司 | A kind of ventilating duct for air-conditioner |
-
2018
- 2018-08-30 CN CN201811004934.7A patent/CN109237761A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202733219U (en) * | 2012-03-21 | 2013-02-13 | 北京瀚江尤科建材有限公司 | Noise elimination sound insulation high hydrophobic environment-friendly air duct |
| CN204267323U (en) * | 2014-10-27 | 2015-04-15 | 江西首普实业有限公司 | A kind of high pressure blower air intake pipe |
| CN204717176U (en) * | 2014-12-31 | 2015-10-21 | 天津市五洲机电设备安装有限公司 | Have flange spiral shell of one's own and connect airduct |
| KR101569322B1 (en) * | 2015-05-01 | 2015-11-13 | 이용호 | Noise reduction type duct |
| CN105736874A (en) * | 2016-05-12 | 2016-07-06 | 陕西建工安装集团有限公司 | Compensation type air pipe leakage prevention structure of ventilation and air conditioning system and air pipe section machining method |
| CN205860399U (en) * | 2016-07-30 | 2017-01-04 | 浙江天诚中央空调工程有限公司 | A kind of ventilating duct for air-conditioner |
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Application publication date: 20190118 |