Noise isolation device of central air conditioner

Abstract

The utility model relates to the technical field of central air conditioners, in particular to a central air conditioner noise isolation device which comprises a central air conditioner, a silencing box, a folded plate mechanism, an adjusting mechanism, an air scattering plate and a silencing frame. The central air conditioner communicates with a ventilation pipe. The silencing box is communicated with the central air conditioner through a ventilation pipe; the multiple sets of plate folding mechanisms are arranged in parallel, and the plate folding mechanisms are movably arranged in the silencing box. The adjusting mechanism is arranged on the silencing box, and the output end of the adjusting mechanism is in transmission connection with the plate folding mechanism; the air scattering plate is arranged at an outlet of the silencing box; the silencing frame is arranged in the silencing box and arranged between the plate folding mechanism and the air scattering plate. The adjusting mechanism and the folded plate mechanism are arranged in a matched mode, when the flow speed and flow of air in the silencing box change, the adjusting mechanism drives the movable plate to rotate to change the angle between the movable plate and the silencing box, automatic adjustment of the movable plate and the silencing box is achieved, and the noise reduction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioners, and particularly relates to a noise isolation device for a central air conditioner. Background Art

[0002] A central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Different from traditional refrigerant air conditioners (such as single units, VRVs), this system centrally processes air to meet comfort requirements. It uses the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air conditioning system to offset the cooling load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the heating load of the indoor environment.

[0003] Patent authorization announcement number CN206449824U discloses a noise treatment device for a central air conditioning unit, including a protective housing. The left and right sides of the top of the protective housing are vertically inserted with air inlet pipes, and the bottoms of the air inlet pipes are arranged inside the protective housing. The left and right side walls of the inner cavity of the air inlet pipes are evenly provided with wind baffle plates. By arranging the wind baffle plates in the air inlet pipes, the air in the air inlet pipes will not form eddies, thereby reducing the noise caused by air eddies. Through the mutual cooperation of the air diffusing plates and the air outlet holes, the discharged air is in a divergent shape, reducing the noise generated by the resonance of the air and the air outlet. Through the arrangement of the elastic members, the noise generated by the vibration of the central air conditioner is reduced. Through the mutual cooperation of the sound insulation cover, the ultra-fine glass wool sound absorption layer and the sound absorption holes, the noise generated by air resonance can be absorbed, reducing the generation of central air conditioner noise.

[0004] However, the above technical solution has the following deficiencies: The folding plates fold to varying degrees with the change of air flow rate and air velocity. The folding of the folding plates cannot be adjusted independently. The greater the air flow rate and air velocity, the more severely the folding plates fold, which is likely to cause resonance and result in an increase rather than a decrease in noise. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a noise isolation device for a central air conditioner aiming at the problems existing in the background art.

[0006] The technical solution of the utility model: A noise isolation device for a central air conditioner includes:

[0007] A central air conditioner, which is connected with a ventilation pipe;

[0008] A muffler box, which is connected with the central air conditioner through the ventilation pipe;

[0009] A folding plate mechanism, which is provided with multiple groups. The multiple groups of folding plate mechanisms are arranged in parallel, and the folding plate mechanism is movably arranged inside the muffler box;

[0010] An adjusting mechanism is provided on the muffler box, and the output end of the adjusting mechanism is drivingly connected to the folding plate mechanism;

[0011] A wind-dispersing plate is provided at the outlet of the muffler box;

[0012] A muffling frame is provided inside the muffler box, and the muffling frame is arranged between the folding plate mechanism and the wind-dispersing plate.

[0013] Preferably, a plurality of wind-blocking plates are provided in the ventilation pipe, and the wind-blocking plates are alternately arranged on both sides of the inner wall of the ventilation pipe.

[0014] Preferably, each set of folding plate mechanisms includes a movable plate, a connecting plate and a connecting frame; the movable plate is rotatably connected to the inner wall of the muffler box, the output end of the adjusting mechanism is drivingly connected to the movable plate, there are two connecting plates, and the two connecting plates are respectively rotatably connected to both sides of the movable plate. There are two connecting frames, one end of each of the two connecting frames is rotatably connected to the inner wall of the muffler box, and the other end of each of the two connecting frames is slidably connected to the two connecting plates respectively.

[0015] Preferably, the adjusting mechanism includes an installation box, an adjusting motor, a driving rod and a transmission assembly; the installation box is fixedly connected to the muffler box, the adjusting motor is fixedly connected to the installation box, one end of the driving rod is fixedly connected to the output end of the adjusting motor, and the other end of the driving rod extends into the installation box. There are multiple sets of transmission assemblies and they correspond to the folding plate mechanisms one by one.

[0016] Preferably, each set of transmission assemblies includes a transmission shaft, a transmission worm gear and a transmission worm; one end of the transmission shaft is fixedly connected to the movable plate, the other end of the transmission shaft penetrates the muffler box and the installation box and extends into the installation box. The transmission worm gear is located in the installation box and is fixedly connected to the transmission shaft. The transmission worm is fixedly connected to the driving rod, and the transmission worm gear is adapted to the transmission worm.

[0017] Preferably, the muffling frame is provided with a plurality of muffling holes penetrating therethrough, the muffling holes are evenly distributed on the muffling frame, and the muffling frame is filled with sound-absorbing cotton.

[0018] Compared with the prior art, the above technical solution of the present utility model has the following beneficial technical effects:

[0019] Through the cooperative setting between the adjusting mechanism and the folding plate mechanism of the present utility model, when the flow rate and flow volume of the air in the muffler box change, the adjusting motor works to drive the transmission worm to rotate through the driving rod. The rotation of the transmission worm drives the transmission worm gear and the transmission shaft to rotate together through the meshing action. The rotation of the transmission shaft drives the movable plate to rotate and change the angle between the movable plate and the muffler box, realizing the autonomous adjustment of the movable plate and the muffler box, and improving the noise reduction effect. Description of the Drawings

[0020] Figure 1 It is a three-dimensional view of an embodiment proposed by the present utility model;

[0021] Figure 2 Cross-sectional view of a noise eliminator in an embodiment proposed by the present utility model;

[0022] Figure 3 Stereogram of a folding plate mechanism in an embodiment proposed by the present utility model;

[0023] Figure 4 Stereogram of a transmission component in an embodiment proposed by the present utility model;

[0024] Figure 5 Cross-sectional view of a ventilation pipe in an embodiment proposed by the present utility model;

[0025] Figure 6 Stereogram of a noise elimination frame in an embodiment proposed by the present utility model.

[0026] Reference numerals: 1, central air conditioner; 2, ventilation pipe; 3, folding plate mechanism; 31, movable plate; 32, connecting plate; 33, connecting frame; 4, adjusting mechanism; 41, installation box; 42, adjusting motor; 43, driving rod; 44, transmission component; 441, transmission shaft; 442, transmission worm gear; 443, transmission worm; 5, noise eliminator; 6, air diffuser plate; 7, noise elimination frame; 8, wind baffle; 9, noise elimination hole. Detailed implementation manners

[0027] Embodiment 1

[0028] As Figures 1-6 shown, a central air conditioner noise isolation device proposed by the present utility model includes a central air conditioner 1, a noise eliminator 5, a folding plate mechanism 3, an adjusting mechanism 4, an air diffuser plate 6 and a noise elimination frame 7;

[0029] The central air conditioner 1 is communicated with a ventilation pipe 2, and a plurality of wind baffles 8 are arranged in the ventilation pipe 2, and the wind baffles 8 are alternately arranged on both sides of the inner wall of the ventilation pipe 2;

[0030] The noise eliminator 5 is communicated with the central air conditioner 1 through the ventilation pipe 2;

[0031] A plurality of groups of folding plate mechanisms 3 are provided, and the plurality of groups of folding plate mechanisms 3 are arranged in parallel, and the folding plate mechanism 3 is movably arranged in the noise eliminator 5;

[0032] The adjusting mechanism 4 is arranged on the noise eliminator 5, and the output end of the adjusting mechanism 4 is in transmission connection with the folding plate mechanism 3;

[0033] The air diffuser plate 6 is arranged at the outlet of the noise eliminator 5;

[0034] The sound-absorbing frame 7 is arranged inside the sound-absorbing box 5. The sound-absorbing frame 7 is arranged between the folding plate mechanism 3 and the air-diffusing plate 6. The sound-absorbing frame 7 is provided with a plurality of sound-absorbing holes 9 penetrating therethrough. The sound-absorbing holes 9 are evenly distributed on the sound-absorbing frame 7. The sound-absorbing frame 7 is filled with sound-absorbing cotton.

[0035] Embodiment 2

[0036] As Figures 2-3 shown, a central air-conditioning noise isolation device proposed by the present utility model, compared with Embodiment 1, this embodiment also specifically discloses the structure of the folding plate mechanism 3; each group of folding plate mechanisms 3 includes a movable plate 31, a connecting plate 32 and a connecting frame 33; the movable plate 31 is rotatably connected to the inner wall of the sound-absorbing box 5, the output end of the adjusting mechanism 4 is in transmission connection with the movable plate 31, there are two connecting plates 32, and the two connecting plates 32 are respectively rotatably connected to both sides of the movable plate 31. There are two connecting frames 33, one end of each of the two connecting frames 33 is rotatably connected to the inner wall of the sound-absorbing box 5, and the other end of each of the two connecting frames 33 is respectively slidably connected to the two connecting plates 32.

[0037] Embodiment 3

[0038] As Figures 1-4 shown, a central air-conditioning noise isolation device proposed by the present utility model, compared with Embodiment 2, this embodiment also specifically discloses the structure of the adjusting mechanism 4; the adjusting mechanism 4 includes an installation box 41, an adjusting motor 42, a driving rod 43 and a transmission assembly 44; the installation box 41 is fixedly connected to the sound-absorbing box 5, the adjusting motor 42 has the function of forward and reverse rotation, and is connected to the control system and the power supply through a wire. The adjusting motor 42 is fixedly connected to the installation box 41. One end of the driving rod 43 is fixedly connected to the output end of the adjusting motor 42, and the other end of the driving rod 43 extends into the installation box 41. There are multiple groups of transmission assemblies 44 and they correspond to the folding plate mechanisms 3 one by one. Each group of transmission assemblies 44 includes a transmission shaft 441, a transmission worm gear 442 and a transmission worm 443; one end of the transmission shaft 441 is fixedly connected to the movable plate 31, the other end of the transmission shaft 441 penetrates through the sound-absorbing box 5 and the installation box 41 and extends into the installation box 41. The transmission worm gear 442 is located in the installation box 41 and is fixedly connected to the transmission shaft 441. The transmission worm 443 is fixedly connected to the driving rod 43, and the transmission worm gear 442 is adapted to the transmission worm 443.

[0039] When the central air conditioner 1 is in use, the air of the central air conditioner 1 first enters the ventilation pipe 2. The wind baffle 8 in the ventilation pipe 2 can eliminate the eddy current phenomenon generated by the entering air and reduce the noise generated by the eddy current. Then the air enters the muffler 5. The air passes through the folding plate mechanism 3 to further reduce the generation of eddy currents in the air. When the flow rate and flow of the air in the muffler 5 change, the adjustment motor 42 works to drive the transmission worm 443 to rotate through the drive rod 43. The rotation of the transmission worm 443 drives the transmission worm wheel 442 and the transmission shaft 441 to rotate together through meshing. The rotation of the transmission shaft 441 drives the movable plate 31 to rotate and change the angle between the movable plate 31 and the muffler 5. When the movable plate 31 rotates, it drives the connecting frame 33 to rotate through the connecting plate 32. When the connecting frame 33 rotates with the connecting plate 332, the connecting plate 32 slides along the inner wall of the connecting frame 33 to avoid movement interference and improve the noise reduction effect. The noise generated by the air resonance is absorbed by the sound-absorbing cotton in the inner cavity of the sound-absorbing frame 7, and finally discharged through the air diffuser plate 6.

[0040] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. A central air-conditioning noise isolation device, characterized in that, Including: A central air conditioner (1) connected to a ventilation pipe (2); A muffler box (5) connected to the central air conditioner (1) through the ventilation pipe (2); A folding plate mechanism (3) with multiple groups, the multiple groups of folding plate mechanisms (3) are arranged in parallel, and the folding plate mechanism (3) is movably arranged in the muffler box (5); An adjusting mechanism (4) arranged on the muffler box (5), and the output end of the adjusting mechanism (4) is in transmission connection with the folding plate mechanism (3); A wind-dispersing plate (6) arranged at the outlet of the muffler box (5); A muffling frame (7) arranged in the muffler box (5), and the muffling frame (7) is arranged between the folding plate mechanism (3) and the wind-dispersing plate (6).

2. The noise isolation device for a central air conditioner according to claim 1, characterized in that, A plurality of wind baffle plates (8) are arranged in the ventilation pipe (2), and the wind baffle plates (8) are alternately arranged on both sides of the inner wall of the ventilation pipe (2).

3. The noise isolation device for a central air conditioner according to claim 1, characterized in that, Each group of folding plate mechanisms (3) includes a movable plate (31), a connecting plate (32) and a connecting frame (33); the movable plate (31) is rotatably connected to the inner wall of the muffler box (5), the output end of the adjusting mechanism (4) is in transmission connection with the movable plate (31), there are two connecting plates (32), and the two connecting plates (32) are respectively rotatably connected to both sides of the movable plate (31), there are two connecting frames (33), one end of each of the two connecting frames (33) is rotatably connected to the inner wall of the muffler box (5), and the other end of each of the two connecting frames (33) is respectively slidably connected to the two connecting plates (32).

4. The noise isolation device for a central air conditioner according to claim 3, characterized in that, The adjusting mechanism (4) includes an installation box (41), an adjusting motor (42), a driving rod (43) and a transmission assembly (44); the installation box (41) is fixedly connected to the muffler box (5), the adjusting motor (42) is fixedly connected to the installation box (41), one end of the driving rod (43) is fixedly connected to the output end of the adjusting motor (42), the other end of the driving rod (43) extends into the installation box (41), and there are multiple groups of transmission assemblies (44) corresponding to the folding plate mechanisms (3) one by one.

5. An air-conditioning noise isolation device according to claim 4, characterized in that, Each group of transmission assemblies (44) includes a transmission shaft (441), a transmission worm wheel (442) and a transmission worm (443); one end of the transmission shaft (441) is fixedly connected to the movable plate (31), the other end of the transmission shaft (441) penetrates through the muffler box (5) and the installation box (41) and extends into the installation box (41), the transmission worm wheel (442) is located in the installation box (41) and is fixedly connected to the transmission shaft (441), the transmission worm (443) is fixedly connected to the driving rod (43), and the transmission worm wheel (442) is adapted to the transmission worm (443).

6. The noise isolation device for a central air conditioner according to claim 1, characterized in that, The muffling frame (7) is provided with a plurality of muffling holes (9) penetrating therethrough, the muffling holes (9) are evenly distributed on the muffling frame (7), and the muffling frame (7) is filled with sound-absorbing cotton.

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