A noise reduction structure and an air purifier

Abstract

The present application relates to the technical field of air purifiers, and particularly relates to a noise reduction structure and an air purifier. The noise reduction structure comprises: a first sound absorption unit, which comprises at least one perforated boss arranged on one side of the first sound absorption unit; a second sound absorption unit, which is correspondingly provided with at least one through hole suitable for being sleeved on the outside of the perforated boss; and further comprising: a mounting plate, which is arranged in close contact with the top surface of the perforated boss; and a sound insulation cavity is formed between the mounting plate and the second sound absorption unit. The noise reduction structure provided by the present application can reduce noise and resonance problems during the use of the air purifier by arranging at least one noise reduction structure around the fan. The noise reduction structure is composed of a triple sound absorption structure of the first sound absorption unit, the second sound absorption unit and the sound insulation cavity. Under the triple sound absorption and noise reduction effect, the sound insulation effect of the purifier can be greatly improved, and the purifier is more silent during operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the air purifier technical field, specifically to a noise reduction structure and air purifier. BACKGROUND

[0002] With the popularization of the green environmental protection concept, environmental pollution, especially air pollution, is increasingly concerned by people, and various particulate matters, bacteria and viruses mixed in the air can greatly affect human health. The air purifier can greatly improve the air cleanliness and air quality of the indoor environment, and therefore gradually becomes one of the household electrical products indispensable to many families. The air purifier is generally placed in the living room or bedroom, and the noise during its operation greatly affects the user's comfort, especially the requirement for noise during sleep. In the prior art, the air purifier usually brings a large noise with the rotation of the fan, which causes the user's comfort. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the defect of large noise of the fan device in the prior art, so as to provide a noise reduction structure capable of playing a noise reduction role.

[0004] Another technical problem to be solved by the present application is to overcome the defect of large noise of the air purifier in the prior art, so as to provide an air purifier with smaller noise.

[0005] To solve the above technical problems, the present application provides a noise reduction structure, comprising:

[0006] The first sound absorption unit comprises at least one perforated boss arranged on one side of the first sound absorption unit.

[0007] The second sound absorption unit is correspondingly provided with at least one through hole suitable for being sleeved outside the perforated boss.

[0008] Further, it further comprises:

[0009] The mounting plate is arranged on the top surface of the perforated boss.

[0010] The mounting plate and the second sound absorption unit form a sound insulation cavity.

[0011] Further, the perforated boss is provided with a through hole inside, and the mounting plate is provided with a communication hole at a position corresponding to the through hole, and the through hole and the communication hole are in communication.

[0012] Further, the first sound absorption unit comprises a sound absorption sponge.

[0013] Further, the second sound absorption unit comprises a sound absorption plate.

[0014] The air purifier comprises a fan and at least one noise reduction structure as described above surrounding the fan.

[0015] Further, the air purifier further comprises a shell, and the shell is provided with the mounting plate in at least a partial region.

[0016] Further, the mounting plate is integrally arranged with the shell.

[0017] Further, the air outlet of the air purifier is formed by the through hole on the first sound absorption unit and the communication hole on the mounting plate.

[0018] Further, the air purifier further comprises at least one fixing plate, which is detachably arranged on the inner side of the shell and is adapted to mount and position the first sound absorption unit and / or the second sound absorption unit.

[0019] The technical scheme of the present application has the following advantages:

[0020] 1. The noise reduction structure provided by the present application can improve the noise reduction effect by setting the first sound absorption unit to preliminarily absorb the incident sound energy and cooperating the first sound absorption unit and the second sound absorption unit.

[0021] 2. The noise reduction structure provided by the present application can form an air cavity between the mounting plate and the second sound absorption unit in the assembled state by setting at least one perforated boss on the first sound absorption unit and arranging the mounting plate on the top surface of the perforated boss, and the air cavity is filled with air medium, so that the air medium and the perforated boss are staggered, thereby staggered sound insulation and noise attenuation.

[0022] 3. The noise reduction structure provided by the present application can form three levels of sound absorption structure by setting the first sound absorption unit and the second sound absorption unit and forming an air cavity with the mounting plate, so that the noise is first weakened by the first sound absorption unit, then weakened by the second sound absorption unit, and then weakened again by the staggered arrangement structure of the air cavity and the perforated boss.

[0023] 4. The noise reduction structure provided by the present application can realize conduction on the opposite sides along the through direction by the conduction of the through hole and the communication hole, which is convenient for air circulation, so that the noise reduction structure can be applied to working environment requiring air circulation.

[0024] 5. The air purifier provided by the present application can reduce noise and resonance problems during use of the air purifier by arranging at least one noise reduction structure around the fan, wherein the noise reduction structure is composed of a first sound absorption unit, a second sound absorption unit and a sound insulation cavity three sound absorption structure combination, and under the three sound absorption noise reduction effect, the sound insulation effect of the purifier is greatly improved, and the purifier is more silent during operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 It is a schematic diagram of the noise reduction structure of the present application;

[0027] Figure 2 It is a first side sectional view of the noise reduction structure of the present application;

[0028] Figure 3 It is a second side sectional view of the noise reduction structure of the present application;

[0029] Figure 4 It is an exploded view of the installation state of the noise reduction structure in the air purifier of the present application;

[0030] Figure 5 It is Figure 4 It is an enlarged view of A in FIG. 6;

[0031] Figure 6 It is a sectional view of the installation state of the noise reduction structure in the air purifier of the present application;

[0032] Explanation of reference signs:

[0033] 10 - noise reduction structure, 110 - first sound absorption unit, 111 - first sound absorption unit body, 112 - perforated boss, 1121 - boss wall, 1122 - through hole, 120 - second sound absorption unit, 121 - via, 130 - mounting plate, 131 - communication hole, 140 - sound insulation cavity, 20 - shell, 21 - air inlet, 30 - fan, 31 - upper fixed plate, 32 - lower fixed plate. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0038] Embodiment one

[0039] In conjunction with Figures 1-3 As shown in the drawings, the present embodiment provides a noise reduction structure 10, comprising:

[0040] The first sound absorption unit 110 comprises at least one perforated boss 112 arranged on one side of the first sound absorption unit 110;

[0041] The second sound absorption unit 120 is correspondingly provided with at least one through hole 121 adapted to be sleeved outside the perforated boss 112.

[0042] The first sound absorption unit 110 is specifically composed of a first sound absorption unit body 111 and at least one perforated boss 112 arranged on one side of the first sound absorption unit body 111. Preferably, the perforated bosses 112 are arranged in rows and / or columns on one side of the first sound absorption unit body 111, and adjacent perforated bosses 112 are left with gaps to facilitate the clamping of the second sound absorption unit 120. Preferably, the perforated bosses 112 can also be arranged on the opposite two sides of the first sound absorption unit body 111.

[0043] The second sound absorption unit 120 is sleeved on the perforated boss 112 of the first sound absorption unit 110 through the through hole 121, so that the first sound absorption unit 110 and the second sound absorption unit 120 are arranged in close contact.

[0044] Preferably, the second sound absorption unit 120 and the first sound absorption unit 110 are connected together by pasting.

[0045] Preferably, the perforated bosses 112 are uniformly distributed in an array form on the first sound absorption unit body 111, and correspondingly, the through holes 121 are also uniformly distributed in an array form on the second sound absorption unit 120.

[0046] The noise reduction structure provided in the embodiment can preliminarily absorb incident sound energy through the first sound absorption unit, and can perform secondary absorption of noise through the cooperation of the first sound absorption unit and the second sound absorption unit arranged in close contact, thereby improving the noise reduction effect.

[0047] The at least one perforated boss 112 arranged on the first sound absorption unit 110 can clamp the second sound absorption unit 120, thereby facilitating the assembly of the first sound absorption unit 110 and the second sound absorption unit 120.

[0048] Specifically, the noise reduction structure further comprises:

[0049] A mounting plate 130 is arranged in close contact with the top surface of the perforated boss 112.

[0050] The mounting plate 130 and the second sound absorption unit 120 form a sound insulation cavity 140.

[0051] The noise reduction structure provided in the embodiment can form a sound insulation cavity 140 between the mounting plate 130 and the second sound absorption unit 120 in the assembled state by arranging at least one perforated boss 112 on the first sound absorption unit 110 and arranging the mounting plate 130 in close contact with the top surface of the perforated boss 112, and the sound insulation cavity is filled with air medium, so that the air medium and the perforated boss 112 are arranged alternately, thereby alternately blocking the noise and gradually attenuating the noise.

[0052] The noise reduction structure provided by the embodiment is provided with the first sound absorption unit and the second sound absorption unit, and forms a sound insulation cavity with the mounting plate, so that the noise is first weakened by the first sound absorption unit, then weakened by the second sound absorption unit, and then weakened again by the staggered arrangement structure of the sound insulation cavity and the perforated boss, forming a three-level sound absorption structure, and the noise is blocked layer by layer by the barriers.

[0053] Specifically, the perforated boss 112 is provided with a through hole 1122 inside; the mounting plate 130 is provided with a communication hole 131 at a position corresponding to the through hole 1122, and the through hole 1122 and the communication hole 131 are in communication.

[0054] The noise reduction structure provided by the embodiment is provided with the through hole 1122 and the communication hole 131, so that the relative two sides of the noise reduction structure in the through direction can realize communication, facilitating air circulation, so that the noise reduction structure can be applied to a working environment requiring air circulation.

[0055] Preferably, the perforated boss 112 is provided with a through hole 1122 inside, so that the perforated boss 112 forms a boss wall 1121 between the through hole 1122 and the sound insulation cavity 140, the boss wall 1121 serves as a barrier between the sound insulation cavity 140 and the through hole 1122, and the area between the mounting plate 130 and the second sound absorption unit forms a good sound absorption structure with the cavity and the staggered sound insulation material, thereby layering the noise.

[0056] Specifically, the first sound absorption unit 110 includes sound absorption sponge.

[0057] Preferably, the first sound absorption unit is configured as a loose porous structure, and the sound absorption material of the porous structure has little reflection of incident sound energy, which means that sound energy is easy to enter and penetrate through such material; the material of such material is porous, loose and breathable, and the porous sound absorption material is usually made of fibrous, granular or foamed material to form a porous structure; the structural feature is that the material has a large number of, interpenetrating, from the surface to the micro-pores, that is, has a certain air permeability. When the sound wave is incident on the surface of the porous material, the air in the micro-pores vibrates, and due to the friction resistance and the viscous resistance of the air and the heat conduction effect, a part of the sound energy is converted into heat energy, thereby playing a sound absorption role.

[0058] Preferably, the sound absorption sponge is processed from melamine foam.

[0059] Specifically, the first sound absorption unit 110 can further include other loose porous materials, such as slag wool or glass wool or felt or blanket, etc. The sound absorption mechanism thereof is that sound waves penetrate into the pores of the material, and the pores are mostly open holes internally interconnected, which are subjected to air molecule friction and viscous resistance, and the fine fibers are mechanically vibrated, so that sound energy is converted into heat energy.

[0060] Specifically, the second sound absorption unit 120 includes a sound absorption board. By arranging the sound absorption board in combination with the sound absorption sponge, the noise is further absorbed in two stages.

[0061] Specifically, the second sound absorption unit 120 does not include sound insulation materials, and the sound insulation materials specifically include one of a steel plate, a lead plate, a wood plate, a gypsum board, a sound insulation felt, and a fiber board. The greater the unit area density of the sound insulation material, the greater the sound insulation volume, and the area density is proportional to the sound insulation volume.

[0062] The sound absorption coefficient of the porous sound absorption material generally gradually increases from low frequency to high frequency, so the sound absorption effect on high frequency and medium frequency sound is good. When an air layer is left behind the porous sound absorption material, low frequency can also be absorbed. The noise reduction structure provided in the embodiment is sequentially arranged in three layers of the first sound absorption unit 110, the second sound absorption unit 120, and the sound insulation cavity 140, and first absorbs the medium and high frequency noise through the porous sound absorption material, and then absorbs the low frequency noise through the sound insulation cavity.

[0063] Embodiment two

[0064] In combination Figures 4-6 As shown in the embodiment, the air purifier includes a fan 30 and at least one noise reduction structure as described in the above embodiment surrounding the surface of the fan 30.

[0065] Preferably, the fan 30 is a centrifugal fan driven by a motor to rotate. The noise of the air purifier is mainly the noise generated by the air flow when the centrifugal fan rotates and the noise generated by the motor itself when it operates, which will act on the space in the room through the propagation of sound waves. The purpose of surrounding at least one noise reduction structure around the surface of the fan 30 in the embodiment is to prevent the propagation of noise.

[0066] The air purifier provided by the embodiment can reduce noise and resonance problems during use of the air purifier by arranging at least one noise reduction structure around the fan, wherein the noise reduction structure is composed of a first sound absorption unit, a second sound absorption unit and a sound insulation cavity triple sound absorption structure, preferably, the first sound absorption unit is sound absorption sponge, the second sound absorption unit is sound absorption board, the sound absorption sponge itself has the characteristics of noise reduction and sound insulation; the sound absorption board is provided with noise reduction holes; the sound insulation cavity also has the effect of sound insulation. Under the triple sound absorption and noise reduction effect of the sound absorption sponge, the sound absorption board and the sound insulation cavity, the sound insulation effect of the purifier is greatly improved, and the purifier is more silent during operation.

[0067] The air outlet of the traditional purifier is usually arranged at the top to discharge the purified air vertically upward, and then slowly diffuse into the sealed space of the room, and the fresh air diffusion speed is slow and the purification time is long. Preferably, the air purifier provided by the embodiment closes the top surface, and the four peripheral panels of the centrifugal fan serve as air outlet parts, which can increase the air outlet area, make the purified air blow out in parallel direction, facilitate cooperation with the noise reduction structure, and arrange the noise reduction structure around the fan to reduce the noise during operation of the air purifier.

[0068] Preferably, the air purifier is surrounded by the noise reduction structure on the four peripheral surfaces of the fan 30, so as to comprehensively absorb the noise generated by the fan 30.

[0069] Specifically, the air purifier further comprises a shell 20, and the shell 20 is provided with the mounting plate 130 at least in part.

[0070] The shell 20 serves as the shell structure of the air purifier, and the inside of the shell 20 is used to accommodate various unit components, the four peripheral surfaces of the air purifier are surrounded by the shell 20, and the noise reduction structure 10 is arranged at the corresponding position of the shell 20 and the fan 30, preferably, the shell 20 is provided with the mounting plate 130 at least in part, so as to facilitate fixation of the noise reduction structure 10.

[0071] Specifically, the mounting plate 130 is integrally arranged with the shell 20. By integrally arranging the mounting plate 130 with the shell 20, the mounting plate serves as a part of the shell, which can reduce the material, reduce the production cost, reduce the assembly steps, and facilitate positioning of the noise reduction structure and the fan.

[0072] Specifically, the air outlet of the air purifier is formed by the through hole 1122 on the first sound absorption unit 110 and the communication hole 131 on the mounting plate 130. Thus, the fan can blow air to the surrounding, form air circulation, and also achieve the effect of sound insulation and noise reduction.

[0073] Preferably, the shell 20 is further formed with an air inlet 21. The air inlet 21 is located at the bottom of the air purifier, and the air outlet is correspondingly arranged at the top of the air purifier. The air outlet is formed by the through hole 1122 on the first sound absorption unit 110 and the communication hole 131 on the mounting plate 130. A fan 30 is arranged between the air outlet and the air inlet 21. With the rotation of the fan 30, the air is guided to flow, and the air is sucked into the air inlet 21 and discharged from the air outlet. As an improved implementation form, the air outlet and the air inlet 21 of the air purifier can also be interchanged or arranged at any position of the air purifier.

[0074] Specifically, the air purifier further comprises at least one fixing plate which is detachably mounted on the inner side of the shell 20 and is adapted to mount and position the first sound absorption unit 110 and / or the second sound absorption unit 120.

[0075] The fixing plate is detachably mounted on the inner side of the shell 20, which can fix the fan and the motor on one hand, and fix the noise reduction structure arranged around the fan on the other hand.

[0076] Preferably, the fixing plate specifically comprises an upper fixing plate 31 and a lower fixing plate 32. The upper fixing plate 31 and the lower fixing plate 32 clamp the first sound absorption unit 110 and / or the second sound absorption unit 120 in the middle to mount and position the noise reduction structure. Preferably, the upper fixing plate 31 and the lower fixing plate 32 can fasten the first sound absorption unit 110 and / or the second sound absorption unit 120 by screws, so that the noise reduction structure is fixed more firmly.

[0077] Preferably, the air purifier can further comprise a high-voltage ion purification module adapted to adsorb harmful substances. The high-voltage ion purification module is internally provided with at least one group of generating electrode and collecting electrode. The generating electrode generates ion wind to make particulate matter carry positive charge to be collected and adsorbed by the collecting electrode. The collecting electrode can collect PM2.5 and other particulate matter and bacterial debris, thereby eliminating most of the bacteria in the air.

[0078] Preferably, the air purifier further comprises a filter screen adapted to intercept harmful substances. The filter screen cooperates with the high-voltage ion purification module to make the air continue to flow through the filter screen after flowing through the high-voltage ion purification module and eliminating most of the bacteria, and the remaining dust particles and the bacteria remaining on the particles are intercepted by the filter screen.

[0079] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. An air cleaner characterized by comprising: The air purifier comprises a fan (30) and at least one noise reduction structure surrounding the fan (30); the noise reduction structure comprises: a first sound absorption unit (110) comprising at least one perforated boss (112) arranged on one side of the first sound absorption unit (110); a second sound absorption unit (120) comprising at least one through hole (121) arranged on the side of the second sound absorption unit (120) and adapted to be sleeved with the perforated boss (112); a mounting plate (130) arranged on the top surface of the perforated boss (112); the mounting plate (130) and the second sound absorption unit (120) form a sound insulation cavity (140); a through hole (1122) arranged in the perforated boss (112); the mounting plate (130) is provided with a communication hole (131) at the corresponding position of the through hole (1122); the through hole (1122) and the communication hole (131) are in communication; The air purifier further comprises a shell (20), and the shell (20) is provided with the mounting plate (130) at least in part; the mounting plate (130) is arranged integrally with the shell (20); the air outlet of the air purifier is formed by the through hole (1122) on the first sound absorption unit (110) and the communication hole (131) on the mounting plate (130).

2. The air cleaner according to claim 1, wherein The first sound absorption unit (110) comprises a sound absorption sponge.

3. The air cleaner of claim 1, wherein, The second sound absorption unit (120) comprises a sound absorption plate.

4. The air cleaner of claim 1, wherein Further comprising: at least one fixing plate, which is detachably arranged on the inner side of the shell (20) and is adapted to mount and position the first sound absorption unit (110) and / or the second sound absorption unit (120).

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