CN114396389B - Upward blowing type silencing roof fan - Google Patents
Upward blowing type silencing roof fan Download PDFInfo
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- CN114396389B CN114396389B CN202111679824.2A CN202111679824A CN114396389B CN 114396389 B CN114396389 B CN 114396389B CN 202111679824 A CN202111679824 A CN 202111679824A CN 114396389 B CN114396389 B CN 114396389B
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 103
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Abstract
The application relates to an upward blowing type silencing roof fan, which comprises a fan assembly, a silencing assembly and an air cap assembly; the silencing component comprises a silencing barrel and a plurality of silencing pieces which are arranged in the silencing barrel in a staggered manner, a flow guide channel is formed between each adjacent silencing piece and the inner wall of the silencing barrel, and each silencing piece comprises two first microperforated plates and a plurality of silencing partition plates; a plurality of second micro-perforated plates are arranged along the radial direction of the silencing cylinder body, and silencing interlayers are formed between every two adjacent first micro-perforated plates and every two adjacent second micro-perforated plates; the hood assembly comprises an outer air duct and a rain-proof valve plate which is rotatably arranged in the outer air duct, the rotation axis of the rain-proof valve plate is vertical to the gas flow direction, and when the fan assembly stops operating, the rain-proof valve plate blocks the outer air duct; when the fan assembly operates, the rainproof valve plate rotates to the outer air cylinder along the flow direction of air to be in an open shape. This application improves the efficiency and the noise reduction of fan.
Description
Technical Field
The invention relates to the technical field of fans, in particular to an upward blowing type muffling roof fan.
Background
The fan is mainly used for ventilation and air change, so that the indoor air quality is improved, the influence of dirty air on the health of people is reduced, and the working efficiency of workers on the occasion is improved; the roof fan is mainly applied to industrial plants, data centers, large storage spaces and other occasions.
Roof fan among the correlation technique makes its self produce great resistance because of the hood structure, leads to the amount of wind and the pressure of output in work to be on the small side, and efficiency is lower, has to choose for use the model on the large side, the great fan of energy consumption, and then brings serious noise scheduling problem that exceeds standard, harms healthy, exists the part of treating the improvement.
Disclosure of Invention
In order to improve the efficiency and the noise reduction of fan, this application provides an upward-blowing amortization type roof fan.
The application provides an upward-blowing type amortization type roof fan adopts following technical scheme:
the utility model provides an upward blow formula amortization type roof fan which characterized in that: the roof-mounted air conditioner comprises a fan assembly, a silencing assembly and a hood assembly which are connected in sequence, wherein the fan assembly is fixed at a vent on a roof;
the silencing assembly comprises a silencing barrel and a plurality of silencing pieces which are arranged in the silencing barrel in a staggered mode, a flow guide channel which is parallel to the air flow direction of the fan assembly is formed between every two adjacent silencing pieces and the inner wall of the silencing barrel, and each silencing piece at least comprises two first micro-perforated plates and a plurality of silencing partition plates which are fixedly arranged between every two adjacent first micro-perforated plates; a plurality of second micro-perforated plates are arranged along the radial direction of the silencing cylinder, and silencing interlayers are formed between the adjacent first micro-perforated plates and the adjacent second micro-perforated plates;
the hood assembly comprises an outer air duct arranged on the silencing barrel and a rainproof valve plate rotatably arranged in the outer air duct, the rotation axis of the rainproof valve plate is perpendicular to the gas flow direction, and the rainproof valve plate blocks the outer air duct when the fan assembly stops operating; when the fan assembly operates, the rainproof valve plate rotates to the outer wind barrel along the flow direction of gas to be in an open shape.
By adopting the technical scheme, in practical application, the fan assembly is fixed at the vent of a roof, then the fan assembly is started to ventilate, air flow can enter the silencing barrel, at the moment, a plurality of silencing sheets which are staggered in the silencing barrel and a formed flow guide channel are utilized, on one hand, gas is dredged, on the other hand, the gas is enabled to play a silencing role through the first micro-perforated plate and the silencing partition plate on the silencing sheet, and in addition, the second micro-perforated plate and the silencing interlayer which are radially arranged on the silencing barrel are utilized to play a silencing role in the gas flowing through the silencing barrel; the sound absorption effect is greatly enhanced by adopting the micro-perforated plate structure and the sound absorption interlayer arranged in the cavity without additionally arranging any other sound absorption material;
then, the gas after the silencing treatment can flow into the outer air cylinder, the arranged outer air cylinder is utilized to prevent the outside natural air from blowing open the two valve plates, and meanwhile, the rainproof valve plates arranged in a rotating mode along the gas flow direction are utilized, namely, the upward blowing type air cap is adopted, the air flow direction is not changed, the resistance of the fan is reduced to the maximum extent, the performance (air quantity and pressure) of the fan is greatly improved, the efficiency of the fan is improved, and the energy consumption is reduced.
Preferably, one side of each first micro-perforated plate, which is close to the fan assembly, is provided with a flow guide block.
Through adopting above-mentioned technical scheme, utilize two first microperforated panels to be close to the water conservancy diversion piece that fan subassembly one side set up, carry out water conservancy diversion drag reduction's effect to gas, help the production of noise reduction.
Preferably, the hood assembly further comprises a silencing and flow guiding grid arranged inside the outer air duct, and the rainproof valve plate is located above the silencing and flow guiding grid.
Through adopting above-mentioned technical scheme, in the in-service use, utilize amortization water conservancy diversion grid, on the one hand, play the water conservancy diversion effect to the gas of flow through outer dryer, on the other hand, play the effect of shock attenuation amortization to the gas of flow through outer dryer.
Preferably, the inner side of the outer air duct is provided with a water retaining groove, the opening direction of the water retaining groove deviates from the fan assembly, the water retaining groove is located in the gap between the rain-proof valve plate and the outer air duct, and the outer air duct is provided with a water drainage hole communicated with the water retaining groove.
Through adopting above-mentioned technical scheme, utilize the water retaining groove that sets up in rain-proof valve block and outer wind-break clearance department, play the collection effect and discharge through the outlet to the rainwater to prevent that the rainwater from flowing backward to outer wind section of thick bamboo in.
Preferably, the fixing frame is arranged in the outer air duct and is provided with a mounting frame, the mounting frame is fixedly arranged in the outer air duct and is located above the silencing guide grid, one side of the silencing sheet, which deviates from the fan assembly, is detachably and fixedly connected with the mounting frame, one side of the mounting frame, which deviates from the joint of the silencing sheet and the silencing sheet, is provided with a guide groove with an upward opening, and the outer air duct is provided with a guide opening communicated with the guide groove.
By adopting the technical scheme, the mounting frame arranged in the outer air duct is utilized, on one hand, the mounting in the silencing barrel of the silencing sheet is realized, and the mounting process of the silencing sheet is simplified; on the other hand, the diversion trench arranged on one side of the joint of the sound attenuation piece and the mounting frame is utilized to collect rainwater, and the drainage of the rainwater is realized by utilizing the diversion port, so that the rainwater is prevented from accumulating at the joint of the mounting frame and the sound attenuation piece to form large water drops, and the influence on the wind power of the fan assembly is avoided.
Preferably, one side of the mounting frame, which is close to the inner wall of the outer cylinder body, is provided with a communicating hole communicated with the water retaining groove.
Through adopting above-mentioned technical scheme, utilize the intercommunicating pore of seting up on the mounting bracket, realize being linked together between manger plate groove and the guiding gutter, improve drainage efficiency.
Preferably, the mounting frame is provided with two lattice blocking frames, and the two rainproof valve plates are positioned between the two rainproof valve plates and are in butt fit with one sides of the two rainproof valve plates, which are far away from the fan assembly; the both ends that the check kept off the frame are provided with and form the support frame that can dismantle fixed connection with the mounting bracket, two one side that the support frame deviates from mutually all is provided with the intercommunication groove that is linked together with the guiding gutter.
By adopting the technical scheme, the lattice blocking frame arranged on the mounting frame is utilized to prevent the two rainproof valve plates from being damaged due to collision, and the lattice blocking frame plays a role in limiting the rainproof valve plates so as to prevent the rainproof valve plates from excessively inclining to one side to cause air leakage of the outer air cylinder;
meanwhile, the communicating groove on the supporting frame is communicated with the flow guide groove, so that the drainage function is realized, and water accumulation at the joint of the air duct outside the supporting frame is prevented.
Preferably, a rotating shaft is arranged between the two supporting frames and positioned above the diversion trench, the two rainproof valve plates are rotatably connected to the rotating shaft, and silencing cushions are arranged on two side faces of each rainproof valve plate.
Through adopting above-mentioned technical scheme, set up the axis of rotation of two rain-proof valve blocks in the top of guiding gutter to prevent to produce ponding in the rotation junction of rain-proof valve block, furthest carries out drainage water conservancy diversion operation at the ponding that probably produces promptly.
Preferably, the fan assembly comprises an axial flow blade mounted on the axial flow fan, a wing grid is arranged on one side of the axial flow blade close to the inside of the house, and the tail wing of the axial flow blade is in a tooth shape.
By adopting the technical scheme, the tooth-shaped empennage arranged on the blades can reduce the pneumatic noise generated by the impeller in the rotating process and actively reduce the noise.
Preferably, the rotation connection position of the rain-proof valve plate is higher than the abutting position of the rain-proof valve plate and the water retaining groove.
Through adopting above-mentioned technical scheme, set up the rotation junction of rain-proof valve block into the butt department that is higher than rain-proof valve block and manger plate groove, even make rain-proof valve block be the slope and set up downwards, the emission of the rainwater of being convenient for helps arranging the manger plate groove of outside dryer inner wall department with the rainwater to prevent that the rainwater from falling into outer dryer from the gap department at outer dryer middle part, guarantee the performance of fan subassembly.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the resistance generated by the fan during operation is reduced by arranging the up-blowing turnover type rainproof valve plate, the rainwater retention prevention function is achieved, and the silencing component is combined to achieve the silencing and noise reduction functions on gas;
2. the first micro-perforated plate, the second micro-perforated plate, the plurality of silencing partition plates, the silencing interlayer, the wing grids and the tooth-shaped empennage are combined, so that the silencing and noise-reducing effects on gas are greatly improved;
3. through manger plate groove, outlet, guiding gutter, water conservancy diversion mouth, intercommunicating pore and intercommunication groove, the place that can produce ponding of amortization urceolus top carries out water conservancy diversion drainage operation all-roundly to prevent that a large amount of ponding from flowing into outer dryer, and then influence the performance of fan subassembly.
Drawings
Fig. 1 is a schematic axial view of an embodiment of the present application, which mainly shows an overall structure of an up-blowing muffling roof fan;
FIG. 2 is a schematic view of an embodiment of the present application, which mainly shows the structure of an axial flow fan and an axial flow blade;
FIG. 3 is a schematic view of an embodiment of the present application, mainly embodying the structure of an axial flow blade;
FIG. 4 is an exploded view of the embodiment of the present application, which mainly shows the structure of the silencing barrel and the silencing plate;
FIG. 5 is a cross-sectional view of a main embodiment of the present application;
FIG. 6 is a cross-sectional view of a cylinder structure mainly embodying noise reduction in accordance with an embodiment of the present invention;
FIG. 7 is a schematic axial view of a primary embodiment of the blast cap assembly according to the present invention;
FIG. 8 is an exploded view of a mounting frame, a silencing guide grid and a silencing sheet according to an embodiment of the present invention;
FIG. 9 is a schematic axial view of the hood assembly of the present application with one of the rain flap removed, mainly showing the structure of the rotation shaft and the barrier frame;
fig. 10 is a schematic structural view of a rain-proof valve sheet according to a second embodiment of the present application.
Reference numerals:
1. a fan assembly; 11. a mounting seat; 12. mounting the cylinder; 13. an axial flow fan; 131. an axial flow blade; 1311. a wing grid;
2. a noise reduction assembly; 21. a noise reduction cylinder; 211. a second microperforated panel; 22. a silencing sheet; 221. a first microperforated panel; 2211. a flow guide block; 222. a sound-deadening partition plate;
3. a hood assembly; 31. an outer air duct; 32. a water accumulation preventing support; 321. a water retaining ring; 322. a mounting frame; 3221. a communicating hole; 323. a grid frame; 3231. rectangular steel; 3232. a support frame; 32321. a rotating shaft; 33. a silencing flow guide grid; 34. a rain-proof valve plate;
4. a flow guide channel; 5. a sound-deadening interlayer; 6. a water retaining groove; 7. a water drain hole; 8. a diversion trench; 9. a flow guide port; 10. and a communicating groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-10.
The embodiment of the application discloses an upward blowing type silencing roof fan.
Example 1
Referring to fig. 1, the up-blowing type muffling roof fan includes a fan assembly 1, a muffling assembly 2, and a hood assembly 3, which are sequentially connected.
Referring to fig. 1 and 2, the fan assembly 1 includes a mounting base 11 vertically fixed at a vent on a roof, a mounting cylinder 12, and an axial fan 13 installed in the mounting cylinder 12, the mounting cylinder 12 is fixedly installed on the mounting base 11 by welding a support rib angle, and an axial flow blade 131 is coaxially installed on the axial fan 13;
referring to fig. 2 and 3, the side of the axial flow fan 131 close to the inside of the house, i.e. the working surface, is provided with the cascade 1311 along the streamline direction thereof, which helps to prevent the blade top of the axial flow fan 131 from generating a vortex, improve the efficiency of the axial flow fan 13, and reduce energy consumption; and the empennage of axial flow blade 131 is the profile of tooth setting, wherein in this application embodiment, the empennage of axial flow blade 131 is the zigzag setting, and arbitrary sawtooth groove is towards one side of axial flow fan 13 pivot, when realizing the wind-force heat transfer, plays the effect of initiatively making an uproar.
Referring to fig. 4 and 5, the noise reduction assembly 2 includes a noise reduction cylinder 21 and a plurality of noise reduction sheets 22, the noise reduction cylinder 21 is coaxially installed on one side of the installation cylinder 12 far from the roof, the noise reduction sheets 22 are arranged in the noise reduction cylinder 21, and the noise reduction sheets 22 are arranged in a staggered manner.
Referring to fig. 4 and 5, the silencing sheet 22 includes a plurality of first microperforated plates 221 and silencing partition plates 222 welded in parallel between adjacent first microperforated plates 221 through U-shaped steel with openings facing downward, in the present embodiment, two first microperforated plates 221 are provided, and three silencing partition plates 222 are provided at intervals in the vertical direction; the top and both sides of two first microperforated panels 221 all pass through U shaped steel welded fastening and connect, and two first microperforated panels 221 are fixed with water conservancy diversion piece 2211 near one side of fan subassembly 1, and in this application embodiment, water conservancy diversion piece 2211 is the setting of V type, plays the water conservancy diversion effect to the gas that flows through noise damping piece 22 bottom side.
Referring to fig. 4 and 6, a plurality of second micro-perforated plates 211 are welded to the silencing cylinder 21 along the radial direction thereof at intervals through a connecting rib plate, in the embodiment of the present application, two second micro-perforated plates 211 are arranged on the inner side of the silencing cylinder 21, the first micro-perforated plate 221 and the second micro-perforated plates 211 are made of 0.8mm stainless steel plates, wherein silencing holes with a diameter of 0.8mm are formed in the stainless steel plates in an arrayed manner, and the hole pitch of adjacent silencing holes is 5mm; silencing interlayer 5 is formed between first microperforated panel 221 and silencing partition 222 and two second microperforated panels 211, and then plays the function of medium separation noise reduction to the gas of second microperforated panel 211.
Referring to fig. 1 and 7, the hood assembly 3 includes an outer wind barrel 31 and an anti-water-accumulation supporting member 32 which are arranged on the silencing barrel 21, the outer wind barrel 31 is coaxially fixed on one side of the silencing barrel, which is far away from the roof, by welding, the diameter of the outer wind barrel 31 is smaller than that of the silencing barrel 21, the anti-water-accumulation supporting member 32 includes a water retaining ring 321 and a mounting frame 322, the water retaining ring 321 is fixed on the top of the second micro-perforated plate 211 which is the innermost side of the silencing barrel 21 by welding, a water retaining groove 6 with an opening which is far away from the fan assembly 1 is formed between the water retaining ring 321 and the inner wall of the outer wind barrel 31, and a drain hole 7 communicated with the water retaining groove 6 is formed at the bottom side of the outer wind barrel 31; thereby collecting and draining rainwater entering the inner wall of the outer air duct 31.
Referring to fig. 1 and 7, the mounting bracket 322 is decided according to the number of the noise damping sheet 22, that is, the mounting bracket 322 in the embodiment of the present application is in a cross shape, and the mounting bracket 322 is fixed to each other by a long channel steel and two short channel steels through welding, a diversion trench 8 with an opening deviating from the fan assembly 1 is formed, that is, a diversion trench 8 in a cross shape is formed, four diversion ports 9 communicated with the diversion trench 8 are formed in the notch of the bottom side of the outer wind barrel 31 corresponding to the end part of the mounting bracket 322, and further, rainwater flowing through the diversion trench 8 is drained. The end portions of the two short channel steels in the mounting frame 322 are provided with communication holes 3221 communicated with the water retaining groove 6, so as to communicate the water retaining groove 6 with the diversion trench 8.
Referring to fig. 7 and 8, the side of the noise damping sheet 22 far away from the fan assembly 1 is fixed on the bottom side of the mounting frame 322 by screws, that is, the side of the noise damping sheet 22 and the innermost second microperforated plate 211 of the noise damping cylinder 21 are not required to be fixedly connected, the mounting cost of the noise damping sheet 22 is greatly saved, during actual installation, only the end of the noise damping sheet 22 and the mounting frame 322 are required to be fixedly connected, then the end of the mounting frame 322 is erected on the edge wall of one side of the opening of the noise damping cylinder 21, then the outer air duct 31 is covered, so that the flow guide opening 9 of the outer air duct 31 is communicated with the flow guide groove 8 at the end of the mounting frame 322, and peripheral welding is performed, and then the mounting frame 322, the noise damping sheet 22 and the outer air duct 31 are fixed.
Referring to fig. 7 and 8, the hood assembly 3 further includes a silencing and guiding grid 33, the silencing and guiding grid 33 is disposed at a top edge of the silencing cylinder 21, an edge of the silencing and guiding grid 33 is overlapped on an edge of the silencing cylinder 21 and is located between the mounting frame 322 and the silencing plate 22, when the mounting frame 322 and the silencing plate 22 are connected, a screw penetrates through a grid hole of the silencing and guiding grid 33 to be connected with the silencing plate 22, and thus the silencing and guiding grid 33 is indirectly mounted. Through the amortization water conservancy diversion grid 33 of installation at amortization barrel 21 top, on the one hand, play the effect of shock attenuation water conservancy diversion to gas of going out, on the other hand to prevent that external leaf class debris from falling into in the amortization barrel 21 from outer wind tube 31.
Referring to fig. 7 and 9, prevent ponding support piece 32 still includes check fender frame 323, check fender frame 323 is the setting of "U" type of back-off form, rectangular steel 3231 by the level setting and through the support frame 3232 that is the channel-section steel setting at rectangular steel 3231 both ends of welding vertical fixation, the bottom of two support frames 3232 is through screw vertical fixation on the long channel-section steel of mounting bracket 322, and the junction is located the one side that is close to outer dryer 31 inner wall and is located water retaining ring 321, wherein, one side that two support frames 3232 deviate from mutually is formed with the intercommunication groove 10 that is linked together with guiding gutter 8 on the long channel-section steel, and then in guiding gutter 8 that leads to the long channel-section steel of mounting bracket 322 with the rainwater on the mounting bracket 322 in the same direction.
Referring to fig. 7 and 9, the hood assembly 3 further includes a rain-proof valve plate 34, and the rain-proof valve plate 34 is made of aluminum thin plate, so that the weight is light and the wind resistance is reduced; in the embodiment of the application, two rain-proof valve plates 34 are symmetrically arranged and are arranged in a fan shape to block the air outlet of the silencing cylinder 21; in other embodiments, the rain-proof valve plates 34 can also be arranged in three or four circumferential arrays, etc. to meet different wind resistance requirements.
Referring to fig. 7 and 9, a rotating shaft 32321 is horizontally fixed between the two support frames 3232 by welding, and the rotating shaft 32321 is located above the long channel steel of the mounting frame 322, that is, the axis of the rotating shaft 32321 is perpendicular to the gas flow direction; the horizontal side edges of the two rain-proof valve plates 34 are rotatably connected with the rotating shaft 32321 through hinges, namely, the rotary connection position of each rain-proof valve plate 34 is arranged above the flow guide groove 8, so that the water leakage at the joint between the two rain-proof valve plates is guided out of the outer side of the outer air cylinder 31, and the rainwater is further prevented from entering the room; and one side of the two rain-proof valve plates 34 departing from the fan assembly 1 is in butt fit with the rectangular steel 3231 of the barrier frame 323, so that the two rain-proof valve plates 34 are prevented from being overturned and transited to avoid the irreversible condition. The two side surfaces of the two rain-proof valve plates 34 and the butting parts of the water retaining ring 321 and the grid blocking frame 323 are provided with silencing soft cushions, which is helpful for reducing noise generated during contact.
The implementation principle of the upward blowing type muffling roof fan in the embodiment of the application is as follows:
in practical use, the mounting base 11 is fixed at the through hole of the roof, and then the axial flow fan 13 is started and drives the axial flow blades 131 to perform ventilation operation;
the airflow enters the silencing outer cylinder from the mounting cylinder 12 and enters the flow guide channel 4 under the flow guide effect of the bottom end of the silencing sheet 22, and in the process, the first micro-perforated plate 221, the second micro-perforated plate 211 and the silencing interlayer 5 are utilized to weaken the horizontal component of the gas, so that the silencing and noise reducing effects are realized;
then, after the silencing treatment, the gas enters the outer air duct 31 from the silencing flow guide grid 33, blows the two rainproof valve plates 34 to turn upwards to expose the outer air duct 31, and tests show that even if the external environment is rainy, the air volume discharged by the outer air duct 31 can completely prevent most of rainwater from falling into the outer air duct 31, so that the rainwater can be prevented from entering the silencing barrel 21, and when ventilation and air exhaust are not needed, the two rainproof valve plates 34 can be in a closed state under the action of self weight;
wherein, the rain blocking groove, the diversion groove 8, the diversion port 9, the communication groove 10 and the communication hole 3221 are utilized to realize the drainage operation with the maximum area and the maximum efficiency.
Example 2
Referring to fig. 10, the present embodiment is different from embodiment 1 in that.
In the embodiment of the present application, the rotation connection between the two rain-proof valve plates 34 and the rotation shaft 32321 is higher than the butt joint between the two rain-proof valve plates 34 and the water retaining ring 321, i.e. the upper edge of the water retaining ring 321 is arranged in a symmetrical eight shape, so as to realize the butt joint between the two water retaining valve plates.
The implementation principle of the embodiment 2 is as follows: in an actual closing state, the rainwater can flow into the water retaining groove 6 of the water retaining ring 321 along the inclined direction of the two rain-proof valve plates 34, so that the rainwater retention capacity is further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. The utility model provides an upward blow formula amortization type roof fan which characterized in that: the roof ventilation device comprises a fan assembly (1), a silencing assembly (2) and a wind cap assembly (3) which are sequentially connected, wherein the fan assembly (1) is fixed at a ventilation opening on a roof;
the noise reduction assembly (2) comprises a noise reduction cylinder (21) and a plurality of noise reduction sheets (22) which are arranged inside the noise reduction cylinder (21) in a staggered mode, a flow guide channel (4) which is parallel to the air flow direction of the fan assembly (1) is formed between each two adjacent noise reduction sheets (22) and the inner wall of the noise reduction cylinder (21), and each noise reduction sheet (22) at least comprises two first micro-perforated plates (221) and a plurality of noise reduction partition plates (222) which are fixedly arranged between the adjacent first micro-perforated plates (221); a plurality of second micro-perforated plates (211) are arranged on the silencing cylinder (21) along the radial direction of the silencing cylinder, and silencing interlayers (5) are formed between every two adjacent first micro-perforated plates (221) and second micro-perforated plates (211);
the air cap assembly (3) comprises an outer air barrel (31) arranged on the silencing barrel body (21) and a rainproof valve plate (34) rotatably arranged in the outer air barrel (31), the rotation axis of the rainproof valve plate (34) is perpendicular to the air flow direction, and when the fan assembly (1) stops operating, the rainproof valve plate (34) blocks the outer air barrel (31); when the fan assembly (1) operates, the rainproof valve plate (34) rotates to the outer air cylinder (31) along the air flow direction to be opened;
the hood assembly (3) further comprises a silencing and flow guiding grid (33) arranged inside the outer air duct (31), and the rainproof valve plate (34) is located above the silencing and flow guiding grid (33);
a water retaining groove (6) is formed in the inner side of the outer air barrel (31), the opening direction of the water retaining groove (6) is away from the fan assembly (1), the water retaining groove (6) is located in the gap between the rain-proof valve plate (34) and the outer air barrel (31), and a water drainage hole (7) communicated with the water retaining groove (6) is formed in the outer air barrel (31);
the hood component (3) comprises a water retaining ring (321), the water retaining ring (321) is fixed to the top of the second micro-perforated plate (211) on the innermost side of the silencing barrel (21) through welding, the water retaining groove (6) is formed between the water retaining ring (321) and the inner wall of the outer air barrel (31), and silencing cushions are arranged at the two side faces of the rainproof valve block (34) and the abutted positions of the water retaining ring (321) and the grid baffle frame (323);
the inner fixing frame of the outer air duct (31) is provided with a mounting frame (322), the mounting frame (322) is fixedly arranged in the outer air duct (31) and is positioned above the silencing and flow guiding grid (33), one side of the silencing piece (22) departing from the fan assembly (1) is detachably and fixedly connected with the mounting frame (322), one side of the mounting frame (322) and the silencing piece (22) departing from the connection part is provided with a flow guiding groove (8) with an upward opening, and the outer air duct (31) is provided with a flow guiding opening (9) communicated with the flow guiding groove (8);
a communicating hole (3221) communicated with the water retaining groove (6) is formed in one side, close to the inner wall of the outer cylinder body, of the mounting frame (322);
lattice baffle frames (323) are erected on the mounting frame (322), the number of the rainproof valve plates (34) is two, and the lattice baffle frames (323) are positioned between the two rainproof valve plates (34) and are in butt fit with one sides of the two rainproof valve plates (34) departing from the fan assembly (1); the two ends of the grid baffle frame (323) comprise support frames (3232) which are detachably and fixedly connected with the mounting frame (322), and one sides of the two support frames (3232) which are deviated from each other are provided with communicating grooves (10) communicated with the diversion grooves (8);
two be provided with axis of rotation (32321) between support frame (3232), just axis of rotation (32321) is located the top of guiding gutter (8), two rain-proof valve block (34) rotate to be connected on axis of rotation (32321).
2. The up-blowing muffling roof fan of claim 1, wherein: one side of each first micro-perforated plate (221), which is close to the fan assembly (1), is provided with a flow guide block (2211).
3. The up-blowing muffling roof fan of claim 1, wherein: the fan assembly (1) comprises axial flow blades (131) installed on an axial flow fan (13), wherein one sides, close to the indoor space, of the axial flow blades (131) are provided with wing fences (1311), and tail wings of the axial flow blades (131) are arranged in a tooth shape.
4. The up-blowing muffling roof fan of claim 1, wherein: the rotation connection position of the rain-proof valve plate (34) and the rotation shaft (32321) is higher than the abutting position of the rain-proof valve plate (34) and the water retaining ring (321).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679824.2A CN114396389B (en) | 2021-12-31 | 2021-12-31 | Upward blowing type silencing roof fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679824.2A CN114396389B (en) | 2021-12-31 | 2021-12-31 | Upward blowing type silencing roof fan |
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| CN114396389A CN114396389A (en) | 2022-04-26 |
| CN114396389B true CN114396389B (en) | 2022-11-18 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116104214B (en) * | 2022-10-19 | 2023-06-27 | 苏州赛为斯环境科技有限公司 | Rainproof silencer |
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| CN104653518A (en) * | 2013-11-25 | 2015-05-27 | 常州市江南环保设备有限公司 | Vertical fan silencer |
| CN207406546U (en) * | 2017-11-08 | 2018-05-25 | 金美玉 | Efficient fan muffler |
| CN212617028U (en) * | 2020-05-28 | 2021-02-26 | 江苏东泽环保科技有限公司 | Rain-cap-free type emptying rain-proof component |
| CN112460076A (en) * | 2020-07-13 | 2021-03-09 | 南京静宝声学科技有限公司 | Main exhaust fan array type silencer for large air volume and strong mixed noise |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1628084A1 (en) * | 2003-04-23 | 2006-02-22 | Tosho Engineering Co., Ltd. | Ventilator |
| CN106402042A (en) * | 2016-11-23 | 2017-02-15 | 山西巨龙风机有限公司 | Noise reduction device for air inlet of main ventilator of tunnel |
| CN108006681A (en) * | 2017-12-30 | 2018-05-08 | 江苏永益环保科技有限公司 | Noise reduction rain-proof draining blast cap |
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|---|---|---|---|---|
| CN104653518A (en) * | 2013-11-25 | 2015-05-27 | 常州市江南环保设备有限公司 | Vertical fan silencer |
| CN207406546U (en) * | 2017-11-08 | 2018-05-25 | 金美玉 | Efficient fan muffler |
| CN212617028U (en) * | 2020-05-28 | 2021-02-26 | 江苏东泽环保科技有限公司 | Rain-cap-free type emptying rain-proof component |
| CN112460076A (en) * | 2020-07-13 | 2021-03-09 | 南京静宝声学科技有限公司 | Main exhaust fan array type silencer for large air volume and strong mixed noise |
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| CN114396389A (en) | 2022-04-26 |
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Denomination of invention: A type of top blowing silencing roof fan Granted publication date: 20221118 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jiading sub branch Pledgor: Yingfei Tongren fan Co.,Ltd. Registration number: Y2024310000208 |