Noise elimination and reduction device in air conditioner

Abstract

The utility model discloses a noise elimination and reduction device in an air conditioner, particularly relates to the technical field of noise elimination and reduction, and comprises a device shell, the left end and the right end of the device shell are symmetrically and fixedly communicated with an air outlet pipe and an air inlet pipe, and the air inlet pipe is located on the right side of the air outlet pipe; a conical mounting cover is fixedly communicated with the inner part of the device shell; a horizontally-arranged fan blade shaft is installed in the device shell, a bearing is installed at the left end of the fan blade shaft, the bearing is fixedly connected with the inner wall of the device shell through a fixed connecting rod, and four triangular fan blades are fixedly arranged at the position, located on the right side of the bearing, of the outer end of the fan blade shaft in an annular array in a sleeving mode. According to the utility model, the impact force generated in the circulation process of the air of the air conditioner can be buffered for multiple times, so that the noise generated by airflow is effectively reduced, and the noise elimination and reduction effect of the air conditioner in the operation process is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound attenuation and noise reduction, in particular to a sound attenuation and noise reduction device in an air conditioner. Background Art

[0002] During the operation of the air conditioner, a certain amount of noise will be generated, which will affect people's living and working environment. At present, most of them install silencers on the exhaust duct of the air conditioner fan to silence and reduce the noise generated by the air conditioner, thereby reducing the impact of noise on people's living and working environment.

[0003] The existing noise reduction device in the air conditioner has the following problems:

[0004] Most of them simply use sound-absorbing materials such as sound-absorbing cotton to eliminate noise. However, since the gas generated in the air conditioner will generate a strong impact force during the diffusion and discharge process in the ventilation duct, the impact force generated will still generate noise at the vent, and the noise reduction effect is poor, which in turn affects the use effect of the air conditioner.

[0005] Therefore, we have made improvements to this and proposed a noise reduction device for an air conditioner. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses an air conditioner internal noise reduction device, comprising a device shell, wherein the left and right ends of the device shell are symmetrically fixedly connected with an air outlet pipe and an air inlet pipe, and the air inlet pipe is located on the right side of the air outlet pipe, and the air outlet pipe and the air inlet pipe are close to each other at one end, and are fixedly connected with a conical mounting cover located inside the device shell;

[0008] A horizontally arranged fan blade shaft is installed inside the device housing, a bearing is installed at the left end of the fan blade shaft, and the bearing is fixedly connected to the inner wall of the device housing through a fixed connecting rod, and four triangular fan blades are fixedly mounted in a circular array at the outer end of the fan blade shaft and located on the right side of the bearing;

[0009] A plurality of inclined air blocking plates are symmetrically fixedly installed on the upper and lower walls inside the device shell. The right end surface of the inclined air blocking plate on the bottom end surface of the device shell is at an angle of 45° to the bottom end surface of the device shell. The right end surface of the inclined air blocking plate on the top end surface of the device shell is at an angle of 45° to the top end surface of the device shell. Sound-absorbing cotton is fixedly installed on the right end surface of the inclined air blocking plate.

[0010] As a preferred technical solution of the utility model, the upper end of the fan blade shaft is mechanically linked with a vertically arranged drive shaft located between the bearing and the triangular fan blade. The upper end of the drive shaft passes through the device casing and extends to above the device casing. The drive shaft is rotatably connected to the top of the device casing.

[0011] As a preferred technical solution of the utility model, a power supply box is fixedly installed on the upper end of the device shell, and the upper end of the drive shaft passes through the lower end of the power supply box and extends to the interior of the power supply box.

[0012] As a preferred technical solution of the utility model, the upper end of the energy supply box is an energy intake port, and a cover plate is installed at the energy intake port.

[0013] As a preferred technical solution of the utility model, a second bevel gear is fixedly mounted on the blade shaft and located between the bearing and the triangular blade, a first bevel gear is fixedly mounted on the lower end of the drive shaft, and the first bevel gear is meshed with the second bevel gear.

[0014] As a preferred technical solution of the utility model, a first wind shield and a second wind shield are fixedly installed on the inner wall of the device shell and located on the left side of the inclined air blocking plate, and the first wind shield is located on the right side of the second wind shield.

[0015] As a preferred technical solution of the utility model, a plurality of first vent holes are evenly arranged on the first wind shield plate, a plurality of second vent holes are evenly arranged on the second wind shield plate, and the plurality of second vent holes and the plurality of first vent holes are not on the same horizontal line.

[0016] The beneficial effects of the utility model are:

[0017] 1. This type of noise reduction device in an air conditioner connects the right end of the air intake pipe with the ventilation duct in the air conditioner. The gas generated in the air conditioner can enter the device casing through the air intake pipe and blow toward the triangular fan blades, which can push the triangular fan blades, and then drive the fan blade shaft to rotate. The rotating fan blade shaft can drive the drive shaft to rotate through the first bevel gear and the second bevel gear. The cover plate is opened, and the rotational force of the drive shaft can be obtained through the energy extraction port. The acquisition method can use the drive shaft to drive other structures to rotate, so that the other structures can work automatically, thereby realizing the recovery of the rotational energy of the drive shaft.

[0018] 2. In this type of sound-absorbing and noise-reducing device for air conditioners, the gas generated in the air conditioner can be blocked by multiple inclined air-blocking plates, which effectively alleviates the impact force generated by the gas during the circulation process, and the gas generated in the air conditioner can be further silenced and noise-reduced by sound-absorbing cotton.

[0019] 3. This type of sound-absorbing and noise-reducing device in an air conditioner can block and slow down the gas generated in the air conditioner through the first wind shield and the second wind shield, effectively alleviate the impact force generated by the gas during the circulation process, thereby achieving the sound-absorbing and noise-reducing effect.

[0020] The utility model can realize multiple buffering of the impact force generated by the air conditioning gas during the circulation process, thereby effectively reducing the noise generated by the airflow, thereby further improving the sound elimination and noise reduction effect of the air conditioner during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a structural schematic diagram of a noise reduction device in an air conditioner according to the utility model;

[0023] Figure 2 It is a cross-sectional view of a device shell in a noise reduction device for an air conditioner according to the utility model;

[0024] Figure 3 This is a partial structural schematic diagram of a noise reduction device in an air conditioner according to the utility model;

[0025] Figure 4 yes Figure 2 A magnified view of the structure in the middle.

[0026] In the figure: 1. device housing; 2. air inlet pipe; 3. energy supply box; 4. air outlet pipe; 5. conical mounting cover; 6. triangular fan blade; 7. first conical gear; 8. second conical gear; 9. sound-absorbing cotton; 10. inclined air baffle; 11. first wind shield; 12. second wind shield; 13. drive shaft; 14. fan blade shaft; 15. first air vent; 16. second air vent. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figure 1-4 As shown, the utility model is an air conditioner internal noise reduction device, comprising a device shell 1, the left and right ends of the device shell 1 are symmetrically fixedly connected with an air outlet pipe 4 and an air inlet pipe 2, and the air inlet pipe 2 is located on the right side of the air outlet pipe 4, the air outlet pipe 4 and the air inlet pipe 2 are close to each other at one end, and are fixedly connected with a conical mounting cover 5 located inside the device shell 1;

[0029] A horizontally arranged fan blade shaft 14 is installed inside the device housing 1, a bearing is installed at the left end of the fan blade shaft 14, and the bearing is fixedly connected to the inner wall of the device housing 1 through a fixed connecting rod, and the outer end of the fan blade shaft 14 is fixedly sleeved with four triangular fan blades 6 in a circular array at the right side of the bearing, one end face of the right side of the triangular fan blade 6 is a smooth inclined surface, and the other end face is arranged parallel to the horizontal plane, when the gas generated in the air conditioner blows toward the triangular fan blade 6, the smooth inclined surface can push the triangular fan blade 6, and then drive the fan blade shaft 14 to rotate;

[0030] A plurality of inclined air baffles 10 are symmetrically fixedly installed on the upper and lower walls inside the device shell 1. The right end face of the inclined air baffle plate 10 located on the bottom end face of the device shell 1 is at an angle of 45° to the bottom end face of the device shell 1. The right end face of the inclined air baffle plate 10 located on the top end face of the device shell 1 is at an angle of 45° to the top end face of the device shell 1. Sound-absorbing cotton 9 is fixedly installed on the right end face of the inclined air baffle plate 10.

[0031] The gas generated in the air conditioner can be blocked by a plurality of inclined air blocking plates 10, which can effectively alleviate the impact force generated by the gas during the circulation process. The sound-absorbing cotton 9 can further reduce the sound of the gas generated in the air conditioner.

[0032] In this embodiment, Figure 1-3 As shown, the upper end of the blade shaft 14 and the position between the bearing and the triangular blade 6 are mechanically linked with a vertically arranged drive shaft 13, the upper end of the drive shaft 13 passes through the device housing 1 and extends to the top of the device housing 1, and the drive shaft 13 is rotatably connected to the top of the device housing 1; the second bevel gear 8 is fixedly mounted on the blade shaft 14 and located between the bearing and the triangular blade 6, and the lower end of the drive shaft 13 is fixedly mounted with a first bevel gear 7, and the first bevel gear 7 is meshed with the second bevel gear 8.

[0033] The right end of the air intake pipe 2 is connected to the ventilation duct inside the air conditioner. The gas generated in the air conditioner can enter the device housing 1 through the air intake pipe 2 and blow toward the triangular fan blades 6, which can push the triangular fan blades 6, and then drive the fan blade shaft 14 to rotate. The rotating fan blade shaft 14 can drive the drive shaft 13 to rotate through the first bevel gear 7 and the second bevel gear 8.

[0034] An energy supply box 3 is fixedly installed on the upper end of the device housing 1, and the upper end of the drive shaft 13 passes through the lower end of the energy supply box 3 and extends to the inside of the energy supply box 3. The upper end of the energy supply box 3 is an energy intake port, and a cover plate is installed at the energy intake port.

[0035] By opening the cover, the rotational force of the drive shaft 13 can be obtained through the energy extraction port. The drive shaft 13 can be used to drive other structures to rotate, so that other structures can work automatically, thereby realizing the recovery of the rotational energy of the drive shaft 13.

[0036] like Figure 2 and Figure 4 As shown, the inner wall of the device housing 1 is fixedly installed with a first wind shield 11 and a second wind shield 12 at the left side of the inclined air blocking plate 10, and the first wind shield 11 is located on the right side of the second wind shield 12; a plurality of first air vents 15 are evenly arranged on the first wind shield 11, and a plurality of second air vents 16 are evenly arranged on the second wind shield 12, and the plurality of second air vents 16 are not on the same horizontal line as the plurality of first air vents 15.

[0037] The first wind shield 11 and the second wind shield 12 can be used to block and slow down the gas generated in the air conditioner, effectively reducing the impact force generated by the gas during the circulation process, thereby achieving the effect of sound absorption and noise reduction. The decelerated gas can be discharged through the first air vent 15 and the second air vent, and the discharged gas can leave the device housing 1 through the outlet pipe 4.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A noise reduction device for an air conditioner, characterized in that: The device comprises a housing (1), wherein the left and right ends of the housing (1) are symmetrically and fixedly connected with an air outlet pipe (4) and an air inlet pipe (2), and the air inlet pipe (2) is located on the right side of the air outlet pipe (4), and the air outlet pipe (4) and the air inlet pipe (2) are close to each other at one end, and are fixedly connected with a conical mounting cover (5) located inside the housing (1); A horizontally arranged fan blade shaft (14) is installed inside the device housing (1), a bearing is installed at the left end of the fan blade shaft (14), and the bearing is fixedly connected to the inner wall of the device housing (1) through a fixed connecting rod, and four triangular fan blades (6) are fixedly mounted in a ring array at the outer end of the fan blade shaft (14) and located on the right side of the bearing; A plurality of inclined air blocking plates (10) are symmetrically fixedly mounted on the upper and lower walls of the device housing (1). The right end face of the inclined air blocking plate (10) located on the bottom end face of the device housing (1) is at an angle of 45° to the bottom end face of the device housing (1). The right end face of the inclined air blocking plate (10) located on the top end face of the device housing (1) is at an angle of 45° to the top end face of the device housing (1). Sound absorbing cotton (9) is fixedly mounted on the right end face of the inclined air blocking plate (10).

2. The noise reduction device for an air conditioner according to claim 1, characterized in that: A vertically arranged drive shaft (13) is mechanically linked to the upper end of the blade shaft (14) and located between the bearing and the triangular blade (6); the upper end of the drive shaft (13) passes through the device housing (1) and extends above the device housing (1); the drive shaft (13) is rotatably connected to the top of the device housing (1).

3. The noise reduction device for an air conditioner according to claim 2, characterized in that: An energy supply box (3) is fixedly mounted on the upper end of the device housing (1), and the upper end of the drive shaft (13) passes through the lower end of the energy supply box (3) and extends into the interior of the energy supply box (3).

4. The noise reduction device for an air conditioner according to claim 3, characterized in that: The upper end of the energy supply box (3) is an energy intake port, and a cover plate is installed at the energy intake port.

5. The noise reduction device for an air conditioner according to claim 4, characterized in that: A second bevel gear (8) is fixedly mounted on the blade shaft (14) and located between the bearing and the triangular blade (6); a first bevel gear (7) is fixedly mounted on the lower end of the drive shaft (13), and the first bevel gear (7) is meshed with the second bevel gear (8).

6. The noise reduction device for an air conditioner according to claim 5, characterized in that: A first wind shield (11) and a second wind shield (12) are fixedly mounted on the inner wall of the device housing (1) and located on the left side of the inclined air shield (10), and the first wind shield (11) is located on the right side of the second wind shield (12).

7. The noise reduction device for an air conditioner according to claim 6, characterized in that: The first wind shield (11) is evenly provided with a plurality of first ventilation holes (15), and the second wind shield (12) is evenly provided with a plurality of second ventilation holes (16), and the plurality of second ventilation holes (16) and the plurality of first ventilation holes (15) are not on the same horizontal line.

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