CN105298934A - Device for achieving noise reduction of fan - Google Patents
Device for achieving noise reduction of fan Download PDFInfo
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- CN105298934A CN105298934A CN201510728462.XA CN201510728462A CN105298934A CN 105298934 A CN105298934 A CN 105298934A CN 201510728462 A CN201510728462 A CN 201510728462A CN 105298934 A CN105298934 A CN 105298934A
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Abstract
The invention provides a device for achieving noise reduction of a fan. The device comprises an air inlet silencing barrel, a fan support, a silencing barrel baffle, at least one silencing bowl and at least one air outlet silencing barrel. The air inlet silencing barrel is connected with the fan support to form an air inlet silencing chamber. The fan support is connected with one air outlet silencing barrel and used for fixing the target fan. All the air outlet silencing barrels are sequentially connected. Each silencing bowl is of a bowl-shaped structure, through holes are formed in the bottoms of the silencing bowls, and the silencing bowls are fixed between the fan support and the air outlet silencing barrels and between every two air outlet silencing barrels to form at least one air outlet silencing chamber. The silencing barrel baffle is fixed onto the air outlet silencing barrel at the most tail end to form another air outlet silencing chamber. The device can improve the effect of fan noise reduction.
Description
Technical field
The present invention relates to mechanical engineering field, particularly a kind of device realizing reducing fan noise.
Background technique
In use, because each electronic component can produce heat in operation process, the situation causing electronic device works exception or electronic component to burn in order to avoid electronic component temperature is too high occurs electronic equipment, needs to dispel the heat to electronic equipment in time.Usual heat dissipation element is fan, fan by flabellum spin even faster air flowing, in air flow process by electronic component produce heat take away, thus prevent electronic component heat accumulate and temperature is too high.
Fan in use, because bearing wear, flabellum rock and the reason such as flabellum and air friction, can produce noise, particularly when rotation speed of the fan is very fast or air quantity is larger, will produce larger noise.When the fan in equipment produces larger noise, damaging the physical and mental health of equipment user, therefore needing there being noise the fan used in the environment of requirement to carry out noise reduction process.
At present, the method for noise reduction process is carried out mainly by reducing rotating speed and the air quantity of fan, to reduce the noise that fan vibration and flabellum and air friction produce to fan.
Be directed to the method for prior art to reducing fan noise, because electronic equipment is to the demand of radiating effect, the rotating speed of fan and air quantity need to reach certain value to avoid electronic equipment temperature too high, therefore by the method that reduces rotation speed of the fan and air quantity, fan is carried out to the method for noise reduction, because rotation speed of the fan and air quantity can not be too low, therefore noise reduction is poor.
Summary of the invention
The invention provides a kind of device realizing reducing fan noise, the noise reduction to fan can be improved.
Embodiments provide a kind of device realizing reducing fan noise, comprising: air intake silencing pot, blower tray, silencing pot baffle plate, at least one noise elimination bowl and at least one air outlet silencing cylinder;
Described air intake silencing pot is connected with described blower tray, forms air intake anechoic room;
Described blower tray is connected with air outlet silencing cylinder described in one of them, and described blower tray is used for fixing described target fan;
Described in each, air outlet silencing cylinder is connected in turn;
Described noise elimination bowl is bowl structure, and bottom is provided with through hole, is fixed between described blower tray and described air outlet silencing cylinder and between two described air outlet silencing cylinders, forms at least one air outlet silencing room;
Described silencing pot baffle plate is fixed on the described air outlet silencing cylinder of least significant end, forms another one air outlet silencing room.
Preferably, described air outlet silencing cylinder is cylinder-like structure, described in each, air outlet silencing cylinder has different length, the described air outlet silencing cylinder of different length and described noise elimination bowl form the described air outlet silencing room comprising different natural frequencies air, to carry out noise reduction process to the noise with different frequency of sound wave.
Preferably, described air intake silencing pot is bowl structure, and bottom is provided with intake grill, can by therein coated for described target fan after described air intake silencing pot is connected with described blower tray.
Preferably, described blower tray is cup-like structure, and bottom is provided with mounting hole and the vent hole of described target fan.
Preferably, described blower tray is ferrous materials.
Preferably, this device comprises further: fan liner;
Described fan liner is asbestos material, is fixed between described target fan and described blower tray, for described target fan and described blower tray being separated.
Preferably, this device comprises further: acoustic lining;
Described acoustic lining is porous material, is fixed on the inwall of described air intake silencing pot, blower tray and air outlet silencing cylinder described in each.
Preferably, any one or more in described air intake silencing pot, air outlet silencing cylinder and silencing pot baffle plate are low-density resin or plastic material.
Preferably, the one end described blower tray is connected with described air outlet silencing cylinder is provided with outside thread;
Described air outlet silencing cylinder one end is provided with outside thread, and the other end is provided with internal thread;
Described silencing pot baffle plate is cup-like structure, and cup-like structure inside is provided with internal thread;
Outside thread on described blower tray matches with the internal thread of one of them air outlet silencing cylinder, to be connected with described air outlet silencing cylinder by described blower tray;
The outside thread of the first air outlet silencing cylinder in adjacent two described air outlet silencing cylinders matches with the internal thread of the second air outlet silencing cylinder, is connected with described second air outlet silencing cylinder to make described first air outlet silencing cylinder;
Internal thread on described silencing pot baffle plate matches with the outside thread on the described air outlet silencing cylinder of least significant end, to be connected with described air outlet silencing cylinder by described silencing pot baffle plate.
Preferably, the both sides of edges of described noise elimination bowl is provided with seal ring, described seal ring contacts with described air outlet silencing cylinder or described blower tray, described air outlet silencing cylinder and described blower tray or two described air outlet silencing cylinders are fixed described noise elimination bowl by described seal ring, to form the described air outlet silencing room of sealing.
Preferably, the through hole of described noise elimination bowl bottom is provided with transition limit, and the air-out direction of described target fan is pointed on described transition limit.
Embodiments provide a kind of device realizing reducing fan noise, target fan is fixed on blower tray, air intake silencing pot is connected with blower tray, form air intake anechoic room, blower tray is connected with one of them air outlet silencing cylinder, each air outlet silencing cylinder is connected in turn, noise elimination bowl is all fixed with between blower tray and air outlet silencing cylinder and between two air outlet silencing cylinders, at least one air outlet silencing room is formed by noise elimination bowl and blower tray or two noise elimination bowls and an air outlet silencing cylinder, silencing pot baffle plate is fixed on the air outlet silencing cylinder of least significant end, by silencing pot baffle plate, air outlet silencing cylinder and noise elimination bowl form another one air outlet silencing room, by air intake anechoic room, noise reduction process is carried out to the noise of target wind inlet of fan, by each air outlet silencing room, noise reduction process is carried out to the noise of target fan outlet, effectively improve the noise reduction to fan.
Accompanying drawing explanation
Fig. 1 is a kind of device schematic diagram realizing reducing fan noise that one embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
One embodiment of the invention provides a kind of device realizing reducing fan noise, comprising: air intake silencing pot, blower tray, silencing pot baffle plate, at least one noise elimination bowl and at least one air outlet silencing cylinder;
Described air intake silencing pot is connected with described blower tray, forms air intake anechoic room;
Described blower tray is connected with air outlet silencing cylinder described in one of them, and described blower tray is used for fixing described target fan;
Described in each, air outlet silencing cylinder is connected in turn;
Described noise elimination bowl is bowl structure, and bottom is provided with through hole, is fixed between described blower tray and described air outlet silencing cylinder and between two described air outlet silencing cylinders, forms at least one air outlet silencing room;
Described silencing pot baffle plate is fixed on the described air outlet silencing cylinder of least significant end, forms another one air outlet silencing room.
Embodiments provide a kind of device realizing reducing fan noise, target fan is fixed on blower tray, air intake silencing pot is connected with blower tray, form air intake anechoic room, blower tray is connected with one of them air outlet silencing cylinder, each air outlet silencing cylinder is connected in turn, noise elimination bowl is all fixed with between blower tray and air outlet silencing cylinder and between two air outlet silencing cylinders, at least one air outlet silencing room is formed by noise elimination bowl and blower tray or two noise elimination bowls and an air outlet silencing cylinder, silencing pot baffle plate is fixed on the air outlet silencing cylinder of least significant end, by silencing pot baffle plate, air outlet silencing cylinder and noise elimination bowl form another one air outlet silencing room, by air intake anechoic room, noise reduction process is carried out to the noise of target wind inlet of fan, by each air outlet silencing room, noise reduction process is carried out to the noise of target fan outlet, effectively improve the noise reduction of fan.
In an embodiment of the invention, air outlet silencing cylinder is cylinder-like structure, each air outlet silencing cylinder has different length, the air outlet silencing room that the air outlet silencing cylinder of different length and noise elimination bowl are formed is of different sizes, the air that corresponding air outlet silencing indoor comprise has different natural frequencys, when noise is by each air outlet silencing room, air with current air outlet silencing indoor resonates by the current noise that in noise, frequency of sound wave is identical with the natural frequency of current air outlet silencing indoor air, the ability of current noise is scattered and disappeared after being converted into heat, reach the object to current noise noise reduction, by carrying out noise reduction process by the noise of multiple frequency of sound wave behind multiple air outlet silencing room, further increase the noise reduction to fan.
In an embodiment of the invention, air intake silencing pot is bowl structure, the bottom of bowl structure is provided with intake grill, air intake anechoic room is formed after air intake silencing pot is connected with blower tray, air intake anechoic room is by therein coated for target fan, on the one hand barrier effect is played to the noise at target wind inlet of fan place, hinder noise to external diffusion, on the other hand, air intake anechoic room can be eliminated the part intake grill noise identical with its inner air natural frequency or weaken, being realized by above two aspects can to the weakening of target wind inlet of fan noise, thus the noise reduction that improve fan.
In an embodiment of the invention, blower tray is ferrous materials, ferrous materials provides enough intensity, target fan is arranged on blower tray that ferrous materials makes, target fan can be avoided vibration to occur in operation process and produces extra noise, thus reduce the noise production of fan.
In an embodiment of the invention, fan liner is fixed with between target fan and blower tray, fan liner is asbestos material, because blower tray fan is ferrous materials, the raw diffusion coefficient of ferrous materials is larger, by liner, target fan and blower tray are separated, when avoiding target fan directly to contact with steel blower tray, blower tray is to the conduction of the noise that target fan produces, thus hinder fan produce noise to external diffusion, further increase the noise reduction to fan.
In an embodiment of the invention, the inwall of air intake silencing pot, blower tray and air outlet silencing cylinder is fixed with acoustic lining, acoustic lining is porous material, when sound wave that is vertical and target fan air-out direction passes through acoustic lining, part acoustic energy rubs and changes into heat energy dissipation and fall in the hole of porous material, sound wave is weakened, to the weakening that the noise of target fan outlet carries out to a certain degree, further increases the noise reduction to fan.
In an embodiment of the invention, air intake silencing pot, air outlet silencing cylinder and silencing pot baffle plate can be made up of low-density resin or low density plastics, because the sound diffusion coefficient of density resin or low density plastics is less, noise is relatively not easy to conduct, the stop can carrying out to a certain degree to sonic propagation of making an uproar, reduce the noise spread out of outside device, thus improve the noise reduction to fan.
In an embodiment of the invention, be threaded connection at blower tray and air outlet silencing cylinder, also be threaded connection between each air outlet silencing cylinder, between silencing pot baffle plate with air outlet silencing cylinder, same employing is threaded, blower tray, air outlet silencing cylinder and silencing pot baffle plate are all threaded connection, so just can according to the frequency of sound wave of target fan Environmental Conditions to the noise that the requirement of noise and target fan produce, corresponding air outlet silencing cylinder is selected to combine flexibly, to reach the noise reduction process of the noise to different frequency wave band, improve the applicability of this device.
In an embodiment of the invention, the both sides of edges of noise elimination bowl is provided with seal ring, when fixing noise elimination bowl, the seal ring of noise elimination bowl edge both sides contacts with blower tray or air outlet silencing cylinder, the air outlet silencing room of sealing is formed by seal ring, avoid noise sound wave to be escaped by the gap between blower tray and air outlet silencing cylinder or the gap between two adjacent air outlet silencing cylinders, improve the noise reduction to fan.
In an embodiment of the invention, the through hole of noise elimination bowl bottom is provided with transition limit, transition limit is arc-shaped structure, arc-shaped structure one end is connected with the through hole edge of noise elimination bowl, and the other end points to the air-out direction of target fan, like this, air-flow can be smooth-going by the through hole of noise elimination bowl, avoid air-flow to get muddled in the through hole of noise elimination bowl, form new noise, thus avoid producing extra noise.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, one embodiment of the invention provides a kind of device realizing reducing fan noise, comprising: air intake silencing pot 101, blower tray 102,4 air outlet silencing cylinders 103, silencing pot baffle plate 104,4 noise elimination bowls 105,6 acoustic linings 106, fan liner 107 and 8 seal rings 108;
Air intake silencing pot 101 is connected with blower tray 102, blower tray 102 is connected with the first air outlet silencing cylinder in 4 air outlet silencing cylinders 103, first air outlet silencing cylinder is connected with the second air outlet silencing cylinder in 4 air outlet silencing cylinders 103, second air outlet silencing cylinder is connected with the 3rd air outlet silencing cylinder in 4 air outlet silencing cylinders 103,3rd air outlet silencing cylinder is connected with the 4th air outlet silencing cylinder in 4 air outlet silencing cylinders 103, and the 4th air outlet silencing cylinder is connected with wind outlet barrel baffle plate 104;
The first noise elimination bowl in 4 noise elimination bowls 105 is fixed between blower tray 102 and the first air outlet silencing cylinder, the second noise elimination bowl in 4 noise elimination bowls 105 is fixed between the first air outlet silencing cylinder and the second air outlet silencing cylinder, the 3rd noise elimination bowl in 4 noise elimination bowls 105 is fixed between the second air outlet silencing cylinder and the 3rd air outlet silencing cylinder, and the 4th noise elimination bowl in 4 noise elimination bowls 105 is fixed between the 3rd air outlet silencing cylinder and the 4th air outlet silencing cylinder;
The first acoustic lining in 6 acoustic linings 106 is fixed on the inwall of air intake silencing pot 101, the second acoustic lining in 6 acoustic linings 106 is fixed on the inwall of blower tray 102, the 3rd acoustic lining in 6 acoustic linings 106 is fixed on the inwall of the first air outlet silencing cylinder, the 4th acoustic lining in 6 acoustic linings 106 is fixed on the inwall of the second air outlet silencing cylinder, the 5th acoustic lining in 6 acoustic linings 106 is fixed on the inwall of the 3rd air outlet silencing cylinder, the 6th acoustic lining in 6 acoustic linings 106 is fixed on the inwall of the 4th air outlet silencing cylinder,
Target fan 109 is bolted on the mounting hole of blower tray 102, accompanies fan liner 107 between target fan 109 and blower tray 102;
The first seal ring in 8 seal rings 108 is between blower tray 102 and the first noise elimination bowl, the second seal ring in 8 seal rings 108 is between the first noise elimination bowl and the first air outlet silencing cylinder, the 3rd seal ring in 8 seal rings 108 is between the first air outlet silencing cylinder and the second noise elimination bowl, the 4th seal ring in 8 seal rings 108 is between the second noise elimination bowl and the second air outlet silencing cylinder, the 5th seal ring in 8 seal rings 108 is between the second air outlet silencing cylinder and the 3rd noise elimination bowl, the 6th seal ring in 8 seal rings 108 is between the 3rd noise elimination bowl and the 3rd air outlet silencing cylinder, the 7th seal ring in 8 seal rings 108 is between the 3rd air outlet silencing cylinder and the 4th noise elimination bowl, the 8th seal ring in 8 seal rings 108 is between the 4th noise elimination bowl and the 4th air outlet silencing cylinder.
In an embodiment of the invention, air intake silencing pot 101 is bowl assembling structure, and the bottom of bowl assembling structure is provided with intake grill, and operationally, air-flow enters air intake silencing pot 101 by this intake grill to target fan 109.After air intake silencing pot 101 is fixed on blower tray 102, form an air intake anechoic room, air intake anechoic room, by therein coated for target fan 109, stops the noise that target fan 109 air inlet produces, and reduces the noise conducted to outside air intake anechoic room.After air intake anechoic room is formed, the air of its inside has certain natural frequency, that a part of noise that in the noise that target fan 109 air inlet produces, frequency of sound wave is identical with air intake noise elimination indoor air natural frequency resonates with the air in air intake anechoic room, and acoustic energy changes heat energy dissipation into and falls.Air intake silencing pot 101 is low-density resin or plastic material, and the diffusion coefficient of this material is less, can reduce and directly conduct by air intake silencing pot 101 noise.Acoustic lining 106 is porous material, and in air intake anechoic room, sound wave prolongs when propagating through the first acoustic lining perpendicular to airflow direction, and a part of sound wave can rub and change into heat energy dissipation in the hole of the first acoustic lining, and sound wave is weakened.
In an embodiment of the invention, fan liner 107 is asbestos material, be sandwiched between target fan 109 and blower tray 102, target fan 109 and blower tray 102 are separated, avoid blower tray 102 to contact with the direct of target fan 109, the noise produced in target fan 109 operation process can be avoided so directly to conduct to whole silencer outside by blower tray 102.
In an embodiment of the invention, blower tray 102 is cup-like structure, and the bottom of cup-like structure is provided with through hole, and in target fan 109 working procedure, the air-flow flowed out from target fan 109 exhaust outlet passes through this through hole.Blower tray 102 is ferrous materials, and ferrous materials has enough intensity, ensures that target fan 109 can not rock in running engineering, avoids producing extra noise.
In an embodiment of the invention, the connecting end of blower tray 102 and the first air outlet silencing cylinder is provided with outside thread, one end of each air outlet silencing cylinder 103 is provided with outside thread, the other end is provided with internal thread, internal thread phase configuration on outside thread on blower tray 102 and the first air outlet silencing cylinder, first noise elimination bowl is fixed on the joint of blower tray 102 and the first air outlet silencing cylinder, the first air outlet silencing room is formed by blower tray 102 and the first noise elimination bowl, the natural frequency of the first air outlet silencing indoor air is f1, when the noise that target fan 109 exhaust outlet produces enters the first air outlet silencing room, in noise, frequency of sound wave is that the noise of f1 ± △ 1 resonates with the air in the first air outlet silencing room, be finally converted into heat energy to be lost, wherein △ 1 is the resonant frequency deviation that the first air outlet silencing room can be eliminated.
In an embodiment of the invention, the outside thread of the first air outlet silencing cylinder matches with the internal thread of the second air outlet silencing cylinder, the outside thread of the second air outlet silencing cylinder matches with the internal thread of the 3rd air outlet silencing cylinder, the outside thread of the 3rd air outlet silencing cylinder matches with the internal thread of the 4th air outlet silencing cylinder, second noise elimination bowl is fixed on the joint of the first air outlet silencing cylinder and the second air outlet silencing cylinder, 3rd noise elimination bowl is fixed on the joint of the second air outlet silencing cylinder and the 3rd air outlet silencing cylinder, 4th noise elimination bowl is fixed on the joint of the 3rd air outlet silencing cylinder and the 4th air outlet silencing cylinder, by the first noise elimination bowl, second noise elimination bowl and the first air outlet silencing cylinder form the second air outlet silencing room, by the second noise elimination bowl, 3rd noise elimination bowl and the second air outlet silencing cylinder form the 3rd air outlet silencing room, by the 3rd noise elimination bowl, 4th noise elimination bowl and the 3rd air outlet silencing cylinder form the 4th air outlet silencing room.Because 4 air outlet silencing cylinders 103 have different length, thus 3 air outlet silencing indoor air there is different natural frequencys, wherein, the natural frequency of the second air outlet silencing indoor air is f2, the natural frequency of the 3rd air outlet silencing indoor air is f3, the natural frequency of the 4th air outlet silencing indoor air is f4, the noise that noise is f2 ± △ 2 by frequency of sound wave behind the second air outlet silencing room is eliminated, the noise that noise is f3 ± △ 3 by frequency of sound wave behind the 3rd air outlet silencing room is eliminated, the noise that noise is f4 ± △ 4 by frequency of sound wave behind the 4th air outlet silencing room is eliminated, wherein △ 2 is the resonant frequency deviation that the second air outlet silencing room can be eliminated, △ 3 is the resonant frequency deviation that the 3rd air outlet silencing room can be eliminated, △ 4 is the resonant frequency deviation that the 4th air outlet silencing room can be eliminated.
In an embodiment of the invention, silencing pot baffle plate 104 is cup-like structure, exhaust outlet is provided with bottom cup-like structure, the inside of cup-like structure is provided with internal thread, the internal thread of silencing pot baffle plate 104 inside matches with the outside thread on the 4th air outlet silencing cylinder, silencing pot baffle plate 104 is connected with the 4th air outlet silencing cylinder, by the 4th noise elimination bowl, 4th air outlet silencing cylinder and silencing pot baffle plate 104 form the 5th air outlet silencing room, wherein the natural frequency of the 5th air outlet silencing indoor air is f5, when noise is by the 5th air outlet silencing room, the partial noise of frequency of sound wave in f5 ± △ 5 scope resonates with the air in the 5th air outlet silencing room, final acoustic energy changes heat energy dissipation into and falls, wherein △ 5 is the resonant frequency deviation that the 5th air outlet silencing room can be eliminated.
In an embodiment of the invention, when noise is successively by the first air outlet silencing room to the 5th air outlet silencing room, prolong perpendicular to target fan 109 air-out direction propagate noise by being fixed on the acoustic lining 106 on blower tray 102 and 4 air outlet silencing cylinder 103 inwalls time, sound wave rubs and is transformed into heat energy dissipation and falls in the hole of acoustic lining 106, thus weakens the noise prolonged perpendicular to target fan 109 air-out direction.
In an embodiment of the invention, between noise elimination bowl 105 and blower tray 102, and all accompany seal ring between noise elimination bowl 105 and air outlet silencing cylinder 103, after blower tray 102 and the first air outlet silencing cylinder are screwed by screw thread, first seal ring and the second seal ring are extruded distortion, first noise elimination bowl is sandwiched in the middle of the first seal ring and the second seal ring, form the first air outlet silencing room of sealing, in like manner, after each adjacent air outlet silencing cylinder 103 is screwed by screw thread, each seal ring deforms, by the second noise elimination bowl, 3rd noise elimination bowl and the 4th noise elimination bowl are fixed in the middle of corresponding seal ring, form the second air outlet silencing room of sealing to the 5th air outlet silencing room, the air outlet silencing room of opposing seal is formed by seal ring, avoid sound wave be threaded connection between gap escape, improve soundproof effect.
In an embodiment of the invention, air outlet silencing cylinder 103 and silencing pot baffle plate 104 are made by low-density resin material or low density plastics's material, because the sound diffusion coefficient of low-density resin material and low density plastics's material is less, not easily noise is conducted to air outlet silencing outdoor, increase the time of noise in the indoor stop of air outlet silencing, resonating by producing with the air of air outlet silencing indoor, increasing the acoustic energy being converted into heat energy.
In an embodiment of the invention, noise elimination bowl 105 is bowl structure, the bottom of bowl structure is provided with vent hole, the wind that target fan 109 is discharged flows out whole apparatus for reducing fan noise by the through hole bottom each noise elimination bowl 105 and the exhaust outlet bottom wind outlet barrel baffle plate 104, through hole on noise elimination bowl 105 is provided with transition limit, transition limit is convex structure, one end of arc-shaped result is connected with the through hole edge of noise elimination bowl 105, the other end points to the outflow direction of air-flow, like this, air-flow can stably by the through hole on noise elimination bowl 105, prevent air-flow from getting muddled in the through hole of noise elimination bowl 105, produce additional noise.
In an embodiment of the invention, because each air outlet silencing room is connected by the through hole in the middle of noise elimination bowl 105, therefore two adjacent air outlet silencing rooms can form a new air outlet silencing room, such as, first air outlet silencing room and the second air outlet silencing room form a new air outlet silencing room 1, second air outlet silencing room and the 3rd air outlet silencing room form a new air outlet silencing room 2, 3rd air outlet silencing room and the 4th air outlet silencing room form a new air outlet silencing room 3, 4th air outlet silencing room and the 5th air outlet silencing room form a new air outlet silencing room 4, in like manner, air outlet silencing room 1 and the 3rd air outlet silencing room form new air outlet silencing room 5, air outlet silencing room 2 and the 4th air outlet silencing room form new air outlet silencing room 6, air outlet silencing room 3 and the 5th air outlet silencing room form new air outlet silencing room 7, air outlet silencing room 5 and the 4th air outlet silencing room form new air outlet silencing room 8, air outlet silencing room 6 and the 5th air outlet silencing room form new air outlet silencing room 9, air outlet silencing room 8 and the 5th air outlet silencing room form new air outlet silencing room 10, like this, by multiple adjacent air outlet silencing room is combined, form multiple new air outlet silencing room, in 1 to air outlet silencing room, air outlet silencing room 10, the natural frequency of air is once F1 to F10, wherein F1 equals f1+f2, F2 equals f2+f3, F3 equals f3+f4, F4 equals f4+f5, F5 equals f1+f2+f3, F6 equals f2+f3+f4, F7 equals f3+f4+f5, F8 equals f1+f2+f3+f4, F9 equals f2+f3+f4+f5, F10 equals f1+f2+f3+f4+f5, the noise that in 1 to air outlet silencing room, such air outlet silencing room 10, air can be F1 to F10 with frequency of sound wave in noise respectively resonates, convert the acoustic energy of these frequency of sound wave noises to heat energy dissipation to fall, eliminate the noise of wider frequency of sound wave.
According to such scheme, a kind of device realizing reducing fan noise that embodiments of the invention provide, at least has following beneficial effect:
1, in the embodiment of the present invention, target fan is fixed on blower tray, air intake silencing pot is connected with blower tray, form air intake anechoic room, blower tray is connected with one of them air outlet silencing cylinder, each air outlet silencing cylinder is connected in turn, noise elimination bowl is all fixed with between blower tray and air outlet silencing cylinder and between two air outlet silencing cylinders, at least one air outlet silencing room is formed by noise elimination bowl and blower tray or two noise elimination bowls and an air outlet silencing cylinder, silencing pot baffle plate is fixed on the air outlet silencing cylinder of least significant end, by silencing pot baffle plate, air outlet silencing cylinder and noise elimination bowl form another one air outlet silencing room, by air intake anechoic room, noise reduction process is carried out to the noise of target wind inlet of fan, by each air outlet silencing room, noise reduction process is carried out to the noise of target fan outlet, effectively improve the noise reduction of fan.
2, in the embodiment of the present invention, can by the air outlet silencing cylinder of multiple different length be carried out independent assortment, form multiple air outlet silencing room comprising different natural frequencies air, noise by air outlet silencing room with, the air of the noise that frequency of sound wave is identical with air outlet silencing indoor air natural frequency and air outlet silencing indoor resonates, acoustic energy converts heat energy dissipation to and falls, thus realizes eliminating the noise with different frequency of sound wave, improves the applicability of this device.
3, in the embodiment of the present invention, target fan is coated in air intake anechoic room, and the air intake silencing pot that low-density resin or plastic material are made can stop that causing of target wind inlet of fan place spreads out of, and reduces the noise that target wind inlet of fan place spreads out of.
4, in the embodiment of the present invention, the inside of air intake silencing pot, air outlet silencing cylinder and blower tray is all fixed with the acoustic lining be made of porous materials, sound wave loses after converting acoustic energy to heat energy by rubbing in hole therein during acoustic lining, sound wave perpendicular to airflow direction is eliminated, improves the noise reduction of this denoising device.
5, in the embodiment of the present invention, the fan liner be made up of asbestos material is separated with between target fan and blower tray, target fan is avoided directly to contact with blower tray, steel blower tray directly by the noise transmission that produces in target fan running process to outside denoising device, improve the noise reduction of this denoising device.
6, in the embodiment of the present invention, adjacent air outlet silencing room can form new air outlet silencing room, the natural frequency of new air outlet silencing indoor air from the stock of original air outlet silencing indoor air because frequency is different, thus can eliminate the noise of more frequency of sound wave, improve the validity of this denoising device.
It should be noted that, in this article, the relational terms of such as first and second and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised a 〃 〃 〃 〃 〃 〃 " limited by statement, and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical factor.
Finally it should be noted that: the foregoing is only preferred embodiment of the present invention, only for illustration of technological scheme of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. realize a device for reducing fan noise, it is characterized in that, comprising: air intake silencing pot, blower tray, silencing pot baffle plate, at least one noise elimination bowl and at least one air outlet silencing cylinder;
Described air intake silencing pot is connected with described blower tray, forms air intake anechoic room;
Described blower tray is connected with air outlet silencing cylinder described in one of them, and described blower tray is used for fixing described target fan;
Described in each, air outlet silencing cylinder is connected in turn;
Described noise elimination bowl is bowl structure, and bottom is provided with through hole, is fixed between described blower tray and described air outlet silencing cylinder and between two described air outlet silencing cylinders, forms at least one air outlet silencing room;
Described silencing pot baffle plate is fixed on the described air outlet silencing cylinder of least significant end, forms another one air outlet silencing room.
2. device according to claim 1, is characterized in that,
Described air outlet silencing cylinder is cylinder-like structure, described in each, air outlet silencing cylinder has different length, the described air outlet silencing cylinder of different length and described noise elimination bowl form the described air outlet silencing room comprising different natural frequencies air, to carry out noise reduction process to the noise with different frequency of sound wave.
3. device according to claim 1, is characterized in that,
Described air intake silencing pot is bowl structure, and bottom is provided with intake grill, can by therein coated for described target fan after described air intake silencing pot is connected with described blower tray.
4. device according to claim 1, is characterized in that,
Described blower tray is cup-like structure, and bottom is provided with mounting hole and the vent hole of described target fan;
And/or,
Described blower tray is ferrous materials.
5. device according to claim 4, is characterized in that, comprises further: fan liner;
Described fan liner is asbestos material, is fixed between described target fan and described blower tray, for described target fan and described blower tray being separated.
6. device according to claim 1, is characterized in that, comprises further: acoustic lining;
Described acoustic lining is porous material, is fixed on the inwall of described air intake silencing pot, blower tray and air outlet silencing cylinder described in each.
7. device according to claim 1, is characterized in that,
Any one or more in described air intake silencing pot, air outlet silencing cylinder and silencing pot baffle plate are low-density resin or plastic material.
8. device according to claim 1, is characterized in that,
One end that described blower tray is connected with described air outlet silencing cylinder is provided with outside thread;
Described air outlet silencing cylinder one end is provided with outside thread, and the other end is provided with internal thread;
Described silencing pot baffle plate is cup-like structure, and cup-like structure inside is provided with internal thread;
Outside thread on described blower tray matches with the internal thread of one of them air outlet silencing cylinder, to be connected with described air outlet silencing cylinder by described blower tray;
The outside thread of the first air outlet silencing cylinder in adjacent two described air outlet silencing cylinders matches with the internal thread of the second air outlet silencing cylinder, is connected with described second air outlet silencing cylinder to make described first air outlet silencing cylinder;
Internal thread on described silencing pot baffle plate matches with the outside thread on the described air outlet silencing cylinder of least significant end, to be connected with described air outlet silencing cylinder by described silencing pot baffle plate.
9. device according to claim 1, is characterized in that,
The both sides of edges of described noise elimination bowl is provided with seal ring, described seal ring contacts with described air outlet silencing cylinder or described blower tray, described air outlet silencing cylinder and described blower tray or two described air outlet silencing cylinders are fixed described noise elimination bowl by described seal ring, to form the described air outlet silencing room of sealing.
10., according to device described arbitrarily in claim 1 to 9, it is characterized in that,
The through hole of described noise elimination bowl bottom is provided with transition limit, and the air-out direction of described target fan is pointed on described transition limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510728462.XA CN105298934A (en) | 2015-10-30 | 2015-10-30 | Device for achieving noise reduction of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510728462.XA CN105298934A (en) | 2015-10-30 | 2015-10-30 | Device for achieving noise reduction of fan |
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| Publication Number | Publication Date |
|---|---|
| CN105298934A true CN105298934A (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510728462.XA Pending CN105298934A (en) | 2015-10-30 | 2015-10-30 | Device for achieving noise reduction of fan |
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| Country | Link |
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| CN (1) | CN105298934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725487A (en) * | 2017-11-27 | 2018-02-23 | 山东超越数控电子股份有限公司 | A kind of denoising device for fan |
| CN114321024A (en) * | 2021-12-31 | 2022-04-12 | 广东美的白色家电技术创新中心有限公司 | Control method and control device of noise reduction device, storage medium and noise reduction device |
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| CN1080368A (en) * | 1992-06-17 | 1994-01-05 | 亚瑞亚·勃朗勃威力有限公司 | Filter silencer |
| US20030150671A1 (en) * | 2000-05-05 | 2003-08-14 | Kerr John David | Air intake silencer |
| CN201794836U (en) * | 2010-09-25 | 2011-04-13 | 露笑集团有限公司 | Muffler for turbocharger |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080368A (en) * | 1992-06-17 | 1994-01-05 | 亚瑞亚·勃朗勃威力有限公司 | Filter silencer |
| US20030150671A1 (en) * | 2000-05-05 | 2003-08-14 | Kerr John David | Air intake silencer |
| CN201794836U (en) * | 2010-09-25 | 2011-04-13 | 露笑集团有限公司 | Muffler for turbocharger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725487A (en) * | 2017-11-27 | 2018-02-23 | 山东超越数控电子股份有限公司 | A kind of denoising device for fan |
| CN107725487B (en) * | 2017-11-27 | 2020-01-14 | 山东超越数控电子股份有限公司 | Noise reduction device for fan |
| CN114321024A (en) * | 2021-12-31 | 2022-04-12 | 广东美的白色家电技术创新中心有限公司 | Control method and control device of noise reduction device, storage medium and noise reduction device |
| CN114321024B (en) * | 2021-12-31 | 2024-03-26 | 广东美的白色家电技术创新中心有限公司 | Control method and control device of noise reduction device, storage medium and noise reduction device |
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