Noise elimination cover of air conditioner outdoor unit

Abstract

The utility model relates to the technical field of air conditioner outdoor unit silencing, and discloses an air conditioner outdoor unit silencing cover which comprises a rear sealing plate, a front sealing plate, a top sealing plate and two side sealing plates, the top sealing plate is located at the top position between the rear sealing plate and the front sealing plate, the top sealing plate is fixed to the rear sealing plate and the front sealing plate through screws, and the two side sealing plates are fixed to the rear sealing plate and the front sealing plate through screws. The two side sealing plates are both located between the rear sealing plate and the front sealing plate, the two side sealing plates are both fixed to the rear sealing plate and the front sealing plate through bolts, so that the rear sealing plate, the front sealing plate, the top sealing plate and the two side sealing plates cover the air conditioner outdoor unit, an air inlet cavity is formed in one side of the rear sealing plate, and an air outlet cavity is formed in the other side of the front sealing plate. A plurality of evenly-distributed air inlet aluminum plate blades are fixedly connected into the air inlet cavity, and an air outlet cavity is formed in one side of the front sealing plate. According to the silencing cover, sound energy can be converted into heat energy to be consumed, so that the purpose of reducing noise is achieved, the noise can be scattered and decomposed, and the noise reduction effect of the silencing cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner outdoor unit noise reduction, and more specifically to a sound insulation cover for an air conditioner outdoor unit. Background Art

[0002] With the increasing pursuit of the quality of living and working environments by people, household air conditioners have become one of the most common household appliances. When the weather is hot (cold) and people are resting, they are accustomed to turning on the air conditioner. While people enjoy the coolness (warmth), the problem of noise from household air conditioner outdoor units has attracted more and more attention, and the noise will affect people's rest.

[0003] The main functions of common air conditioner covers include protecting air conditioner equipment from the influence of the external environment, extending the service life of the equipment, reducing maintenance costs, and beautifying the environment. Common air conditioner outdoor unit covers only have a decorative effect and do not have the function of reducing noise. Therefore, an air conditioner cover that can meet both conventional functions and noise reduction functions is proposed. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sound insulation cover for an air conditioner outdoor unit to solve the problems existing in the above-mentioned background art.

[0005] The utility model provides the following technical solution: A sound insulation cover for an air conditioner outdoor unit, including a rear sealing plate, a front sealing plate, a top sealing plate and two side sealing plates. The top sealing plate is located at the top position between the rear sealing plate and the front sealing plate, and the top sealing plate is fixed to the rear sealing plate and the front sealing plate by screws. Both of the two side sealing plates are located between the rear sealing plate and the front sealing plate, and both of the two side sealing plates are fixed to the rear sealing plate and the front sealing plate by bolts, so that the rear sealing plate, the front sealing plate, the top sealing plate and the two side sealing plates cover the air conditioner outdoor unit. An air inlet cavity is formed on one side of the rear sealing plate, and a plurality of uniformly distributed air inlet aluminum plates are fixedly connected in the air inlet cavity. An air outlet cavity is formed on one side of the front sealing plate, and a plurality of uniformly distributed air outlet aluminum plates are fixedly connected in the air outlet cavity. Cavities are formed between adjacent two of the air outlet aluminum plates and between adjacent two of the air inlet aluminum plates. Noise reduction components for reducing gas noise are provided on one side of each of the plurality of air outlet aluminum plates.

[0006] As a further scheme of the utility model, the noise reduction components are a plurality of micro-perforations, and the plurality of micro-perforations are respectively formed on the outer sides of the plurality of air outlet aluminum plates and the plurality of air inlet aluminum plates, and the plurality of micro-perforations are uniformly distributed.

[0007] As a further scheme of the utility model, the noise reduction components are also a plurality of pentagonal pyramids, and the plurality of pentagonal pyramids are respectively fixedly connected to the outer sides of the plurality of air outlet aluminum plates and the plurality of air inlet aluminum plates, and the plurality of pentagonal pyramids are uniformly distributed.

[0008] As a further solution of the present utility model, sealing gaskets are fixedly connected to the bottoms of the rear sealing plate, the front sealing plate, the top sealing plate and the two side sealing plates.

[0009] As a further solution of the present utility model, two fixing plates are fixedly connected to the positions at the bottoms on the opposite sides of the rear sealing plate and the front sealing plate, and waist-shaped round holes are formed on the upper surfaces of the plurality of fixing plates.

[0010] As a further solution of the present utility model, the plurality of air inlet aluminum plates are all in the shape of barbs, and the plurality of air outlet aluminum plates are all in a state of inclining upward from inside to outside.

[0011] The technical effects and advantages of the present utility model:

[0012] 1. By providing the air outlet aluminum plates and the air inlet aluminum plates with micro-perforations, the present utility model utilizes the small holes and the cavities to form an elastic vibration system. Among them, the air column in the hole neck of the pipe wall is similar to a piston and has a certain acoustic mass, while the cavity is similar to a spring and has a certain acoustic compliance. When the sound wave reaches the neck opening, under the action of the sound pressure, the air column makes a reciprocating motion, and thus frictions with the hole wall, converting the sound energy into heat energy and consuming it. The acoustic resistance generated by this frictional damping causes part of the sound energy to be converted into heat energy and dissipated. When the frequency of the incoming sound wave is the same as the natural frequency of the elastic system of the muffler, resonance occurs. At the resonance frequency and its vicinity, the air vibration speed reaches the maximum value, and at the same time, the consumed sound energy is the most and the noise reduction amount is the largest, thereby achieving the purpose of reducing noise.

[0013] 2. By providing the pentagonal pyramid, during the process of the air flow entering or discharging, the wind noise generated when the air flow flows will be refracted through the multiple surfaces of the pentagonal pyramid, thereby scattering and decomposing the noise, and thus improving the noise reduction effect of the muffler cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front-side three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 2 It is a rear-side three-dimensional structural schematic diagram of the present utility model.

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the present utility model.

[0017] Figure 4 It is a structural schematic diagram of Embodiment 1 of the aluminum plates of the present utility model.

[0018] Figure 5 It is a structural schematic diagram of Embodiment 2 of the aluminum plates of the present utility model.

[0019] The reference numerals are: 1, rear sealing plate; 2, fixing plate; 3, waist-shaped round hole; 4, side sealing plate; 5, front sealing plate; 6, top sealing plate; 7, air inlet cavity; 8, air outlet cavity; 9, screw; 10, air inlet aluminum plate page; 11, air outlet aluminum plate page; 12, micro-perforation; 13, pentagonal pyramid; 14, gasket. Specific implementation manner

[0020] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. In addition, the forms of each structure described in the following embodiments are merely examples, and the present utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0021] Embodiment 1

[0022] Referring to Figures 1 - 4 , this embodiment provides a noise silencer for an air conditioner outdoor unit, including a rear sealing plate 1, a front sealing plate 5, a top sealing plate 6 and two side sealing plates 4. The top sealing plate 6 is located at the top between the rear sealing plate 1 and the front sealing plate 5. The top sealing plate 6 is fixed to the rear sealing plate 1 and the front sealing plate 5 by screws 9. The two side sealing plates 4 are both located between the rear sealing plate 1 and the front sealing plate 5, and the two side sealing plates 4 are both fixed to the rear sealing plate 1 and the front sealing plate 5 by bolts, so that the rear sealing plate 1, the front sealing plate 5, the top sealing plate 6 and the two side sealing plates 4 cover the air conditioner outdoor unit. An air inlet cavity 7 is opened on one side of the rear sealing plate 1, and a plurality of evenly distributed air inlet aluminum plate pages 10 are fixed in the air inlet cavity 7 by bolts. An air outlet cavity 8 is opened on one side of the front sealing plate 5, and a plurality of evenly distributed air outlet aluminum plate pages 11 are fixed in the air outlet cavity 8 by bolts. A cavity is formed between two adjacent air outlet aluminum plate pages 11 and between two adjacent air inlet aluminum plate pages 10. A noise reduction component for reducing gas noise is provided on one side of each of the plurality of air outlet aluminum plate pages 11. The noise reduction component is a plurality of micro-perforations 12. The plurality of micro-perforations 12 are respectively opened on the outer sides of the plurality of air outlet aluminum plate pages 11 and the plurality of air inlet aluminum plate pages 10. The plurality of micro-perforations 12 are evenly distributed. A elastic vibration system is formed by using the small holes and the cavities. The air column in the hole neck of the tube wall is similar to a piston and has a certain acoustic mass, while the cavity is similar to a spring and has a certain acoustic compliance. When the sound wave reaches the neck opening, under the action of the sound pressure, the air column makes a reciprocating motion, and thus friction is generated with the hole wall, converting the sound energy into heat energy and consuming it. The acoustic resistance generated by this frictional damping causes part of the sound energy to be converted into heat energy and dissipated. When the frequency of the incoming sound wave is the same as the natural frequency of the elastic system of the muffler, resonance occurs. At the resonance frequency and its vicinity, the air vibration speed reaches the maximum value, and at the same time, the consumed sound energy is more and the noise reduction amount is the largest, so as to achieve the purpose of reducing noise.

[0023] Among them, sealing gaskets 14 are adhesively bonded to the bottoms of the rear sealing plate 1, the front sealing plate 5, the top sealing plate 6 and the two side sealing plates 4. Two fixing plates 2 are welded at the positions at the bottoms on the opposite sides of the rear sealing plate 1 and the front sealing plate 5. Waist-shaped round holes 3 are provided on the upper surfaces of the plurality of fixing plates 2. The plurality of air inlet aluminum plates 10 are all in the shape of barbs, and the plurality of air outlet aluminum plates 11 are all in a state of inclining upward from inside to outside.

[0024] The working principle of this embodiment: During use, the top sealing plate 6 is installed and fixed to the rear sealing plate 1 and the front sealing plate 5 through screws 9, and then the two side sealing plates 4 are installed and fixed to the rear sealing plate 1 and the front sealing plate 5 through bolts, so that the rear sealing plate 1, the front sealing plate 5, the top sealing plate 6 and the two side sealing plates 4 cover the air conditioner outdoor unit. An air outlet cavity 8 is provided on the front sealing plate 5, and an air inlet cavity 7 is provided on the rear sealing plate 1. The air inlet aluminum plates 10 in the air inlet cavity 7 and the air outlet aluminum plates 11 in the air outlet cavity 8 facilitate the better introduction and discharge of air flow. When the gas flows, since there are a plurality of micro-perforations 12 on both the air inlet aluminum plates 10 and the air outlet aluminum plates 11, a flexible vibration system is formed by using the small holes and the cavities. Among them, the air column in the hole neck of the pipe wall is similar to a piston and has a certain acoustic mass, while the cavity is similar to a spring and has a certain acoustic compliance. When the sound wave reaches the neck opening, under the action of the sound pressure, the air column makes a reciprocating motion, and thus friction is generated with the hole wall, converting the sound energy into heat energy and consuming it. The acoustic resistance generated by this frictional damping causes part of the sound energy to be converted into heat energy and dissipated. When the frequency of the external sound wave is the same as the natural frequency of the elastic system of the muffler, resonance occurs. At the resonance frequency and its vicinity, the air vibration speed reaches the maximum value, and at the same time, a large amount of sound energy is consumed and the noise reduction amount is the largest, thereby achieving the purpose of reducing noise.

[0025] Embodiment Two

[0026] Referring to Figure 5 , this embodiment provides a noise reduction cover for an air conditioner outdoor unit. The difference between this embodiment and Embodiment One is that the noise reduction components are also a plurality of pentagonal pyramids 13. The plurality of pentagonal pyramids 13 are respectively welded on the outer sides of the plurality of air outlet aluminum plates 11 and the plurality of air inlet aluminum plates 10. The plurality of pentagonal pyramids 13 are evenly distributed. When the air flow flows through the cavities between the air inlet aluminum plates 10 and the cavities between the air outlet aluminum plates 11, the pentagonal pyramids 13 on the air inlet aluminum plates 10 and the air outlet aluminum plates 11 will refract the air flow through their multiple faces, thereby scattering and decomposing the noise generated during the air flow, and improving the noise reduction effect of the noise reduction cover.

[0027] The working principle of this embodiment: When the air flow flows through the cavities between the air inlet aluminum plates 10 and the cavities between the air outlet aluminum plates 11, the pentagonal pyramids 13 on the air inlet aluminum plates 10 and the air outlet aluminum plates 11 will refract the air flow through their multiple faces, thereby scattering and decomposing the noise generated during the air flow, and improving the noise reduction effect of the noise reduction cover.

[0028] Finally, the following points should be noted: In the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to indicate the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0029] In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

Claims

1. A muffler cover for an outdoor unit of an air conditioner, comprising a rear sealing plate (1), a front sealing plate (5), a top sealing plate (6) and two side sealing plates (4), characterized in that: The top sealing plate (6) is located between the rear sealing plate (1) and the front sealing plate (5) at the top position, and the top sealing plate (6) is fixed to the rear sealing plate (1) and the front sealing plate (5) by screws (9). The two side sealing plates (4) are located between the rear sealing plate (1) and the front sealing plate (5), and the two side sealing plates (4) are fixed to the rear sealing plate (1) and the front sealing plate (5) by bolts, so that the rear sealing plate (1), the front sealing plate (5), the top sealing plate (6) and the two side sealing plates (4) cover the outdoor unit of the air conditioner. An air inlet cavity (7) is provided on one side of the sealing plate (1), and a plurality of evenly distributed air inlet aluminum plate pages (10) are fixedly connected in the air inlet cavity (7); an air outlet cavity (8) is provided on one side of the front sealing plate (5), and a plurality of evenly distributed air outlet aluminum plate pages (11) are fixedly connected in the air outlet cavity (8); a cavity is formed between two adjacent air outlet aluminum plate pages (11) and between two adjacent air inlet aluminum plate pages (10); and a noise reduction component for reducing gas noise is provided on one side of the plurality of air outlet aluminum plate pages (11).

2. The muffler cover for an air conditioner outdoor unit according to claim 1, characterized in that: The noise reduction component is a plurality of micro-perforations (12), and the plurality of micro-perforations (12) are respectively opened on the outer sides of the plurality of air outlet aluminum plate leaves (11) and the plurality of air inlet aluminum plate leaves (10), and the plurality of micro-perforations (12) are evenly distributed.

3. The muffler cover for an air conditioner outdoor unit according to claim 1, characterized in that: The noise reduction component is also a plurality of pentagonal pyramids (13), and the plurality of pentagonal pyramids (13) are respectively fixedly connected to the outer sides of the plurality of air outlet aluminum plate leaves (11) and the plurality of air inlet aluminum plate leaves (10), and the plurality of pentagonal pyramids (13) are evenly distributed.

4. The muffler cover for an air conditioner outdoor unit according to claim 1, characterized in that: The bottoms of the rear sealing plate (1), the front sealing plate (5), the top sealing plate (6) and the two side sealing plates (4) are fixedly connected with sealing pads (14).

5. The muffler cover for an air conditioner outdoor unit according to claim 4, characterized in that: Two fixing plates (2) are fixedly connected to the bottom of the rear sealing plate (1) and the front sealing plate (5) on the opposite side, and the upper surfaces of the fixing plates (2) are provided with oval holes (3).

6. The muffler cover for an air conditioner outdoor unit according to claim 1, characterized in that: The plurality of air inlet aluminum plate leaves (10) are all in a barbed hook shape, and the plurality of air outlet aluminum plate leaves (11) are all in a state of being tilted upward from the inside to the outside.

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