CN217873472U

CN217873472U - Noise reduction air wall unit of EC fan

Info

Publication number: CN217873472U
Application number: CN202221885833.7U
Authority: CN
Inventors: 梁润星
Original assignee: DONGGUAN JUNKE AIR CONDITIONER MANUFACTURING CO LTD
Current assignee: DONGGUAN JUNKE AIR CONDITIONER MANUFACTURING CO LTD
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-22
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to the technical field of fan noise reduction, in particular to an EC fan noise reduction wind wall unit, which comprises a noise reduction unit box body, wherein the noise reduction unit box body is in a shape with openings at two ends, the noise reduction unit box body comprises a plurality of noise reduction plates, and each noise reduction plate comprises an outer plate, rock wool, a polyurethane foam material and an inner plate which are sequentially arranged; the installation assembly comprises an installation partition plate, the noise reduction unit box body is fixed on the installation partition plate, the installation partition plate and the noise reduction unit box body jointly form an installation groove for installing a fan, and a ventilation hole for air outlet of the fan is formed in the middle of the installation partition plate. This application has the effect that reduces EC fan's noise.

Description

Noise reduction air wall unit of EC fan

Technical Field

The application relates to fan amortization technical field, concretely relates to air wall unit of making an uproar falls in EC fan.

Background

The EC fan is a centrifugal fan adopting a digital brushless direct current outer rotor motor or a centrifugal fan adopting the EC motor. The EC fan is generally directly connected with the motor, so that the energy consumption of belt transmission is avoided, and the running cost of belt loss is saved. For the variable air volume system, the volute-free centrifugal fan mostly adopts an EC motor. Wherein, the average efficiency of the high-efficiency IPM motor is up to more than 90%.

The wall body formed by the EC fans in the air processor is called as a fan wall, has the advantages of flexible combination, less occupied space of the air processor, convenient maintenance and replacement and the like in application, and is the trend of the development of the ventilation technology of the air conditioner.

When the fan wall is applied to some air conditioning units with relatively high system resistance, the fan wall generally needs to operate at a high rotating speed, and particularly when a plurality of EC fans are superposed for use, the generated noise is generally higher. The panel of the general air-conditioning box only plays a role of sound insulation and has limited effect.

In view of the above-mentioned related technologies, the inventor believes that there is a defect of excessive noise when the EC fan "fan wall" is applied to an air conditioning unit.

SUMMERY OF THE UTILITY MODEL

In order to reduce the noise of EC fan "fan wall", this application provides an EC fan noise reduction wind wall unit, can form the installation by a plurality of unit combinations in the air-conditioning box.

The application provides a wind wall unit of making an uproar falls in EC fan adopts following technical scheme:

the noise reduction wind wall unit of the EC fan comprises a noise reduction unit box body (1), wherein the noise reduction unit box body (1) is in a shape with openings at two ends, the noise reduction unit box body (1) comprises a plurality of noise reduction plates (11), and each noise reduction plate (11) comprises an outer plate (114), a polyurethane foaming material (113), rock wool (112) and an inner plate (111) which are sequentially arranged; installation component (2), installation component (2) are including installing baffle (21), it is fixed in to fall unit box (1) of making an uproar on installation baffle (21), installation baffle (21) with fall the common mounting groove that is used for installing EC fan (3) that forms of wind unit box (1) of making an uproar, ventilation hole (211) of supplying the fan air-out are seted up at installation baffle (21) middle part.

Through adopting above-mentioned technical scheme, EC fan is fixed in on the installation baffle when the installation, and the mouth of blowing of EC fan is towards the ventilation hole of installation baffle. In the working process of the EC fan, the acoustical panel surrounding the periphery of the EC fan absorbs sound waves emitted to the periphery of the EC fan, rock wool in the acoustical panel is used as a main acoustical damping material, the acoustical panel has a good acoustical absorption effect, and meanwhile, the polyurethane foaming material has high toughness, so that the noise reduction unit box body has a good protection effect on the EC fan.

Preferably, a fixing plate (115) is fixedly arranged on the outer plate (114), a fixing convex strip (1151) is arranged on the fixing plate (115), a fixing groove (1111) is arranged on the inner plate (111), the fixing convex strip (1151) is matched with the fixing groove (1111) to enable the inner plate (111) and the fixing plate (115) to be connected with each other, and the rock wool (112) and the polyurethane foaming material (113) are clamped and fixed by the outer plate (114) and the inner plate (111).

Through adopting above-mentioned technical scheme, the fixed plate is fixed to be set up on the planking, and the fixed plate passes through the cooperation of fixed recess and fixed sand grip with interconnect with the inner panel, in the manufacturing of acoustical panel, at first pastes the rock wool on the inner panel, then inserts the inner panel along the one end slip of fixed plate length under the cooperation of fixed recess and fixed sand grip, because the thickness of rock wool is not enough to fill the space of inner panel and planking, so form a cavity between rock wool and planking. And finally, pouring a polyurethane foaming material into the cavity to generate a certain expansion force to tightly press the rock wool. The production and manufacturing mode of the sound-absorbing board is simple and convenient, the rock wool is under the clamping action of the outer board, the polyurethane foaming material and the inner board, the rock wool generates compression and generates internal stress, the internal stress of the rock wool enables the fixing convex strips to generate stable stress on the groove walls of the fixing grooves, and then the connection state of the inner board and the fixing board is stable.

Preferably, the inner panel (111) and the rock wool (112) are fixed by adhesion, the rock wool (112) and the polyurethane foam (113) are expanded and pressed together when the polyurethane is foamed, and the outer panel (114) and the polyurethane foam (113) are also fixed by adhesion.

Through adopting above-mentioned technical scheme, inner panel and rock wool adhesive fixation, planking and polyurethane foaming material are also through adhesive fixation, the connection of inner panel and rock wool and planking and polyurethane foaming material is relatively independent, the rock wool can be in more flaccid state, the rock wool under the flaccid state has better noise cancelling effect, additionally, whole box passes through behind the polyurethane foaming technology, equivalent structural strength has, can superpose the weight of bearing a plurality of EC fans noise reduction wind wall unit when making up into "wind wall".

Preferably, the inner plate (111) is provided with a plurality of silencing holes.

Through adopting above-mentioned technical scheme, the bloop is seted up to the inner panel, and on the one hand, the bloop has the noise cancelling action to the sound wave that the EC fan sent, and on the other hand, the inner panel quality of seting up the bloop is lighter to reduce the production material in the production of bloop.

Through adopting above-mentioned technical scheme, on the fan was fixed in the installation baffle, when needs overhauld the fan, dismantle the fan from the installation baffle promptly in needs, and need not dismantle the acoustical panel alone, and on the same reason, overhaul at the fan and accomplish the back, the installation of fan also only need with it in the installation baffle can, and need not install the acoustical panel alone, this kind of mode makes the wholeness of noise reduction box higher, the dismouting of the unit box of making an uproar of falling more convenient. When the acoustical panel needs to be replaced, the acoustical panel monomer which needs to be replaced is detached from the mounting frame for replacement, and other acoustical panels are not affected.

Preferably, every two adjacent silencing plates (11) are welded and fixed with each other.

Through adopting above-mentioned technical scheme, two adjacent acoustical boards are welded fastening each other, make all acoustical boards integration from this, and the wholeness of the acoustical board body is high, when fixed to the acoustical board box, need not install alone every acoustical board, only need fix in the symmetric position can, simple installation.

In summary, the present application includes at least one of the following beneficial technical effects:

1, the EC fan is arranged in the mounting partition plate, and in the working process of the EC fan, the sound absorption plates surrounding the periphery of the EC fan absorb sound waves emitted to the periphery of the EC fan, so that the noise generated by the EC fan is reduced, and meanwhile, the noise reduction unit box body has a good protection effect on the EC fan;

2. the inner plate is provided with the silencing holes, on one hand, the silencing holes have a silencing effect on sound waves emitted by the EC fan, and on the other hand, the inner plate provided with the silencing holes is lighter in weight and consumes less materials in the production of the silencing plate;

the EC fan is fixed in the mounting partition plate, and in the process of overhauling the EC fan, only the mounting frame and the mounting partition plate need to be disassembled and assembled, but the noise reduction plate does not need to be disassembled and assembled independently, so that the integrity of the noise reduction unit box body is higher, and the noise reduction unit box body is more convenient to disassemble and assemble; when the acoustical panel needs to be changed, the acoustical panel monomer that will change is pulled down from the mounting bracket and is changed, does not influence other acoustical panels, consequently also is more convenient to the maintenance of the unit box body of making an uproar that falls self.

Drawings

FIG. 1 is an overall structural view of embodiment 1 of the present application;

fig. 2 is a structural view of an acoustic panel in embodiment 1 of the present application;

fig. 3 is a structural view of a noise reduction unit in embodiment 1 of the present application;

fig. 4 is an overall structural view of the EC fan wall in embodiment 2 of the present application.

Description of reference numerals: 1. a noise reduction unit box body; 11. a sound-absorbing panel; 111. an inner plate; 1111. fixing the groove; 112. rock wool; 113. a polyurethane foam material; 114. an outer plate; 115. a fixing plate; 1151. fixing the convex strip; 2. mounting the component; 21. installing a partition plate; 211. a vent hole; 3. an EC fan.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Example 1:

the application discloses lee unit of making an uproar falls in EC fan refers to fig. 1 and 3, and including the unit box of making an uproar 1 and installation component 2, the unit box of making an uproar 1 is the square tube-shape of both ends open-ended that falls. The noise reduction unit box 1 comprises four noise reduction plates 11, and each side wall of the noise reduction unit box 1 corresponds to one noise reduction plate 11. The installation component 2 comprises an installation partition plate 21, a ventilation hole 211 is formed in the middle of the installation partition plate 21, and the size of the ventilation hole 211 is matched with the size of an air suction opening of the EC fan 3.

Referring to fig. 2, the sound-absorbing panel 11 includes an outer panel 114, a polyurethane foam 113, rock wool 112, and an inner panel 111, which are sequentially disposed, a pair of fixing plates 115 are fixedly disposed on a pair of parallel side edges of the outer panel 114, the fixing plates 115 and the outer panel 114 may be integrally formed or may be welded, and when the fixing plates 115 or the outer panel 114 are thin plates having a small thickness, the difficulty of welding is high, and at this time, the fixing plates 115 and the outer panel 114 are preferably integrally connected. Each pair of fixing plates 115 is provided with a fixing rib 1151 on a side thereof remote from the corresponding outer plate 114. A pair of mutually parallel sides of the inner plate 111 are respectively provided with a fixing groove 1111, and the two fixing convex strips 1151 and the two fixing grooves 1111 are in one-to-one correspondence and are in splicing fit. The rock wool 112 and the polyurethane foam material 113 are clamped between the inner plate 111 and the outer plate 114, the rock wool 112, the inner plate 111 and the outer plate 114 are tightly adhered under clamping by the expansion force generated by filling the polyurethane foam material 113 during production, the inner stress of the rock wool 112 and the polyurethane foam material 113 enables the inner plate 111 and the outer plate 114 to have a tendency of being away from each other, and further the fixing convex strips 1151 are stably clamped with the fixing grooves 1111.

Referring to fig. 2, the inner plate 111 is provided with a plurality of muffling holes arranged in an array.

Example 2:

referring to fig. 4, a plurality of noise reduction wind wall units can be stacked and combined in the air handler to form a "fan wall", and in practical applications, the noise reduction wind wall units can be designed in number and arrangement and combination according to the space of the air handler, the required air delivery amount, and the like, and fig. 4 is a combination manner thereof.

The application of the noise reduction air wall unit of the EC fan is as follows: the noise reduction unit box body 1 is fixed on the installation partition plate 21 and forms a space for installing the EC fan 3 together with the installation partition plate 21, the EC fan 3 is fixed on the installation partition plate 21 when being installed, the EC fan 3 and the installation partition plate 21 can be installed through screws and nuts, and an air suction opening of the EC fan 3 faces the air vent 211 of the installation partition plate 21. When the noise reduction unit box body works, the EC fan 3 sucks air flow into the air vent 211, sends out the air flow to the other side of the box body through the rotation of the impeller, and absorbs sound waves sent to the periphery by the EC fan 3 towards the sound-absorbing plates 11 surrounding the periphery of the EC fan 3 in the box body. In the sound-absorbing plate 11, the rock wool 112 is used as a main sound-absorbing material, and has a good sound-absorbing effect, and the rock wool 112 has high toughness, so that the noise-reducing wind wall unit box body 1 has a good protection effect on the EC fan 3. Meanwhile, the structural strength of the whole noise reduction unit box body is improved by filling the polyurethane foam material 113.

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

1. The utility model provides a wind wall unit of making an uproar falls in EC fan which characterized in that: the noise reduction unit box comprises a noise reduction unit box body (1), wherein the noise reduction unit box body (1) is in a shape with openings at two ends, the noise reduction unit box body (1) comprises a plurality of noise reduction plates (11), and each noise reduction plate (11) comprises an outer plate (114), a polyurethane foam material (113), rock wool (112) and an inner plate (111) which are sequentially arranged; installation component (2), installation component (2) are including installing baffle (21), it is fixed in to fall unit box (1) of making an uproar on installation baffle (21), installation baffle (21) with fall the first box (1) of making an uproar and form the mounting groove that is used for installing EC fan (3) jointly, ventilation hole (211) of confession fan air-out are seted up at installation baffle (21) middle part.

2. The EC fan noise reduction wind wall unit of claim 1, wherein: the fixing plate is characterized in that a fixing plate (115) is fixedly arranged on the outer plate (114), a fixing convex strip (1151) is arranged on the fixing plate (115), a fixing groove (1111) is formed in the inner plate (111), the fixing convex strip (1151) is matched with the fixing groove (1111) to enable the inner plate (111) and the fixing plate (115) to be connected with each other, and the rock wool (112) and the polyurethane foaming material (113) are clamped and fixed by the outer plate (114) and the inner plate (111).

3. The EC fan noise reduction wind wall unit according to claim 1 or 2, wherein: the inner plate (111) and the rock wool (112) are fixed through gluing, the rock wool (112) and the polyurethane foam material (113) are expanded and pressed together during polyurethane foaming, and the outer plate (114) and the polyurethane foam material (113) are also fixed through gluing.

4. The EC fan noise reduction wind wall unit of claim 3, wherein: the inner plate (111) is provided with a plurality of silencing holes.

5. The EC fan noise reduction wind wall unit of claim 1, wherein: every two adjacent acoustical panels (11) are welded and fixed with each other.