Noise reduction device and electrical equipment

Abstract

The utility model discloses a noise reduction device and electrical equipment. The noise reduction device comprises a main body frame, a noise reduction mechanism, a detection assembly and a control assembly, the noise reduction mechanism is used for opening and closing the ventilation channel of the main body frame and comprises a plurality of first shutters and a plurality of second shutters; the detection assembly is used for detecting the temperature and sound intensity of a target area and outputting a corresponding temperature signal and a corresponding sound signal; the control assembly is used for controlling the first shutter and the second shutter to rotate according to the temperature signal and the sound signal so as to adjust the opening and closing angles of the first shutter and the second shutter. The opening and closing angles of the first shutter and the second shutter can be adjusted according to the two factors of temperature and sound intensity, and noise can be reduced when the heat dissipation requirement of the electrical equipment is low.

Description

Technical Field

[0001] This application relates to the field of noise reduction technology, and particularly to a noise reduction device and an electrical appliance. Background Art

[0002] A heat dissipation device is a device used by an electrical appliance such as a CT (Computed Tomography) device to provide heat dissipation. When the heat dissipation device is working, the blades in the heat dissipation device need to rotate at a high speed to ensure the heat dissipation requirements of the electrical appliance.

[0003] However, when the electrical appliance is in a low-power working state, the temperature of the electrical appliance is relatively low and the heat dissipation requirement is low. At this time, the blades in the heat dissipation device are still rotating at a high speed, which will generate a large amount of noise. Summary of the Utility Model

[0004] This application provides a noise reduction device and an electrical appliance, which can reduce noise when the heat dissipation requirement of the electrical appliance is low.

[0005] In a first aspect, this application provides a noise reduction device, including: a main body frame having a ventilation channel; a noise reduction mechanism disposed on the main body frame and used for opening and closing the ventilation channel, the noise reduction mechanism including a plurality of first louvers and a plurality of second louvers; the plurality of first louvers extend along a first direction and are arranged along a second direction, and can rotate relative to the main body frame around the first direction, the plurality of second louvers extend along the second direction and are arranged along the first direction, and can rotate relative to the main body frame around the second direction; wherein, the second direction is perpendicular to the first direction; a detection component is used for detecting the temperature and sound intensity of a target area and outputting corresponding temperature signals and sound signals; and a control component, communicatively connected to the detection component, is used for controlling the rotation of the first louvers and the second louvers according to the temperature signals and the sound signals to adjust the opening and closing angles of the first louvers and the second louvers.

[0006] In some embodiments of this application, the noise reduction mechanism further includes: a first connecting member to which all the first louvers are connected; a second connecting member to which all the second louvers are connected.

[0007] In some embodiments of this application, the first louver includes a first blade, the second louver includes a second blade, and a sound insulation layer is coated on the first blade or / and the second blade. This can improve the opening and closing efficiency of the first louvers and the second louvers.

[0008] In some embodiments of the present application, the detection component includes: a plurality of temperature sensors, the temperature sensors are used to detect the temperature of the target area and output a corresponding temperature signal; a plurality of sound sensors, the sound sensors are used to detect the sound of the target area and output a corresponding sound signal; wherein the temperature sensors and the sound sensors are arranged alternately in sequence. The temperature and sound intensity of more areas can be detected to obtain more accurate detection results.

[0009] In some embodiments of the present application, the main frame includes: a first shell having the ventilation channel; and a second shell disposed around the periphery of the first shell and forming a receiving cavity with the first shell, so as to enhance the sound insulation performance of the main frame.

[0010] In some embodiments of the present application, the control component is disposed in the accommodating cavity, so that the space of the accommodating cavity can be fully utilized, thereby reducing the overall volume of the noise reduction device.

[0011] In some embodiments of the present application, the noise reduction device further includes: a driving mechanism, which is arranged on the main frame, and the first louver and the second louver are respectively connected to the driving mechanism in a transmission manner; wherein the control component is in communication connection with the driving mechanism, and the control component is used to control the driving mechanism to drive the first louver and the second louver to rotate according to the temperature signal and the sound signal, so as to adjust the opening and closing angles of the first louver and the second louver. The first louver and the second louver can be driven to rotate by the driving mechanism.

[0012] In some embodiments of the present application, the driving mechanism is arranged in the ventilation channel; and / or the noise reduction mechanism is provided with a avoiding notch, and the driving mechanism is located in the avoiding notch. The overall volume of the noise reduction device can be reduced, and the airflow flowing through the ventilation channel can be used to provide heat dissipation for the driving mechanism, thereby meeting the heat dissipation requirements of the driving mechanism.

[0013] In some embodiments of the present application, the noise reduction device further comprises a display screen, and the display screen is communicatively connected to the control component. A user can intuitively see the working status and historical working records of the noise reduction device from the display screen.

[0014] In the second aspect, the present application also provides an electrical device, comprising a device body and a noise reduction device as described in any one of the above embodiments, the device body having an air inlet and an air outlet, the noise reduction device being installed at the air inlet and / or the air outlet, and the air inlet and / or the air outlet being connected to the ventilation channel.

[0015] The beneficial effects of the present application are as follows: The control component can adjust the opening and closing angles of the first louver and the second louver according to two factors, namely temperature and sound intensity, and then adjust the air volume of the air flow passing through the ventilation channel. When it is detected that the temperature of the electrical equipment is lower than the preset temperature and the sound intensity is greater than the preset intensity, the opening and closing angles of the first louver and the second louver can be reduced, thereby reducing the air volume of the air flow, and further reducing the noise, so that the noise can be reduced when the heat dissipation requirement of the electrical equipment is low; When it is detected that the temperature of the electrical equipment is higher than the preset temperature and the sound intensity is less than the preset intensity, the opening and closing angles of the first louver and the second louver can be increased, thereby increasing the air volume of the air flow, and further increasing the heat dissipation intensity to ensure the heat dissipation requirement of the electrical equipment, achieving the balance between heat dissipation and noise. The specific values of the preset temperature and the preset intensity can be selected according to actual needs; In addition, the first louver and the second louver arranged in two directions respectively can play a better role in blocking the sound transmission, thereby having a better noise reduction effect. At the same time, the flow direction of the air flow entering and exiting the ventilation channel can be controlled by respectively adjusting the rotation of the first louver and the second louver, preventing the air flow from directly blowing on the human body or important equipment, and meeting the requirements of more scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of a noise reduction device in an embodiment of the present application;

[0018] Figure 2 is an exploded view of the components of a noise reduction device in an embodiment of the present application;

[0019] Figure 3 is an exploded view of the components of a noise reduction device in an embodiment of the present application;

[0020] Figure 4 is a partial schematic structural diagram of a noise reduction device in an embodiment of the present application.

[0021] Reference numerals:

[0022] 10. Main frame; 11. Ventilation channel; 12. First housing; 13. Second housing; 14. Accommodation cavity; 15. Connecting lug; 20. Noise reduction mechanism; 21. First louver; 211. First rotating shaft; 212. First blade; 22. Second louver; 221. Second rotating shaft; 222. Second blade; 23. First connecting member; 24. Second connecting member; 25. First connecting rod; 26. Second connecting rod; 27. Sound insulation layer; 28. Avoidance notch; 30. Driving mechanism; 31. First driving member; 32. Second driving member; 33. Protective housing; 40. Detection component; 41. Temperature sensor; 42. Sound sensor; 50. Control component; 51. Controller; 60. Display screen. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] The present application provides a noise reduction device and an electrical appliance to solve the problem in the related art that when the electrical appliance is in a low-power working state, the temperature of the electrical appliance is relatively low and the heat dissipation requirement is low, but at this time, the blades in the heat dissipation device are still rotating at a high speed, which will generate relatively large noise.

[0025] In a first aspect, the present application provides a noise reduction device, as Figures 1 to 3 shown, including a main frame 10, a noise reduction mechanism 20, a detection component 40, and a control component 50.

[0026] Among them, the main frame 10 has a ventilation channel 11. The main frame 10 is used to provide support and installation space for components such as the noise reduction mechanism 20 and the driving mechanism 30. The main frame 10 can be in a long strip shape, a square frame shape, a disc shape or other shapes. The present application does not limit the specific shape of the main frame 10; the main frame 10 is also used to connect with the device main body of the electrical appliance to install the noise reduction device at the air inlet or / and air outlet of the device main body. The ventilation channel 11 is used to provide a flow channel for the air flow. The ventilation channel 11 has an air inlet and an air outlet. When the noise reduction device is installed at the air inlet of the device main body, the air flow passes through the ventilation channel 11 and enters the device main body; when the noise reduction device is installed at the air outlet of the device main body, the air flow in the device main body passes through the ventilation channel 11 and is discharged.

[0027] The noise reduction mechanism 20 is arranged on the main body frame 10 and is used to open and close the ventilation channel 11. The noise reduction mechanism 20 includes a plurality of first louvers 21 and a plurality of second louvers 22. The plurality of first louvers 21 extend along the first direction XX and are arranged along the second direction YY, and can rotate relative to the main body frame 10 around the first direction XX. The plurality of second louvers 22 extend along the second direction YY and are arranged along the first direction XX, and can rotate relative to the main body frame 10 around the second direction YY. Wherein, the second direction YY is perpendicular to the first direction XX. The number of the first louvers 21 and the second louvers 22 can be selected according to actual needs, and this application does not make any restrictions.

[0028] The detection component 40 is used to detect the temperature and sound intensity of the target area and output corresponding temperature signals and sound signals. It can be understood that the target area is an area with the same or similar temperature and sound intensity as that inside the device main body. The temperature and sound intensity in the target area can represent the temperature and sound intensity inside the device main body. The target area can be an area inside the ventilation channel 11, or an area outside the ventilation channel 11 and close to the main body frame 10, or an area inside the device main body.

[0029] The control component 50 is communicatively connected to the detection component 40. The control component 50 is used to control the rotation of the first louvers 21 and the second louvers 22 according to the temperature signal and the sound signal, so as to adjust the opening and closing angles of the first louvers 21 and the second louvers 22. The detection component 40 can be communicatively connected to the control component 50 by means of wired connection or wireless connection. The opening and closing angle of the first louver 21 can be the included angle formed by the blade of the first louver 21 and the inner wall of the ventilation channel 11, and the opening and closing angle of the second louver 22 can be the included angle formed by the blade of the second louver 22 and the inner wall of the ventilation channel 11. The opening and closing angle is related to the opening degree of the ventilation channel 11. Generally speaking, the larger the opening and closing angle, the greater the opening degree of the ventilation channel 11, the greater the air volume passing through the ventilation channel 11, and the air volume is related to the heat dissipation efficiency and noise. The greater the air volume, the higher the heat dissipation efficiency, and at the same time, the greater the noise.

[0030] It should be noted that, in the present application, the control component 50 can adjust the opening and closing angles of the first louver 21 and the second louver 22 according to the two factors of temperature and sound intensity, thereby adjusting the air volume of the airflow through the ventilation channel 11. When it is detected that the temperature of the electrical equipment is lower than the preset temperature and the sound intensity is greater than the preset intensity, the opening and closing angles of the first louver 21 and the second louver 22 can be reduced, thereby reducing the air volume of the airflow, thereby reducing the noise, and thus reducing the noise when the heat dissipation demand of the electrical equipment is low; when it is detected that the temperature of the electrical equipment is higher than the preset temperature and the sound intensity is less than the preset intensity, the opening and closing angles of the first louver 21 and the second louver 22 can be increased. The opening and closing angles of the leaves 21 and the second louver 22 can increase the air volume of the airflow, and then increase the heat dissipation intensity, ensure the heat dissipation requirements of the electrical equipment, and achieve a balance between heat dissipation and noise. The specific values ​​of the preset temperature and the preset intensity can be selected according to actual needs; in addition, the temperature can be used as the main control indicator, and the sound intensity can be used as an auxiliary control indicator. When it is detected that the temperature of the electrical equipment is higher than the preset temperature and the sound intensity is greater than the preset intensity, the opening and closing angles of the first louver 21 and the second louver 22 are still increased, thereby increasing the air volume of the airflow, ensuring the heat dissipation requirements of the electrical equipment, and thus ensuring the normal operation of the electrical equipment.

[0031] It should also be noted that in the present application, the first louver 21 and the second louver 22 arranged in two directions respectively can play a better role in blocking the propagation of sound, thereby having a better noise reduction effect. At the same time, the direction of the airflow in and out of the ventilation channel 11 can be controlled by adjusting the rotation of the first louver 21 and the second louver 22 respectively to prevent the airflow from blowing directly onto the human body or important equipment, thereby meeting the needs of more scenarios.

[0032] In some embodiments of the present application, the noise reduction device may also include a driving mechanism 30, which is arranged on the main frame 10, and the first louver 21 and the second louver 22 are respectively connected to the driving mechanism 30 in a transmission manner, and the driving mechanism 30 can drive the first louver 21 and the second louver 22 to rotate; wherein, the control component 50 is communicatively connected with the driving mechanism 30, and the control component 50 is used to control the driving mechanism 30 to drive the first louver 21 and the second louver 22 to rotate according to the temperature signal and the sound signal, so as to adjust the opening and closing angles of the first louver 21 and the second louver 22, thereby adjusting the opening and closing angles of the first louver 21 and the second louver 22.

[0033] In one embodiment, the first louver 21 and the second louver 22 can be arranged along the thickness direction of the main frame 10, and the first louver 21 and the second louver 22 are arranged crosswise. Figure 1Taking the shown perspective as an example, at this time, the opening and closing angles of the first louvers 21 and the second louvers 22 are the largest, and the first louvers 21 and the second louvers 22 cross to form a grid-like structure. Among them, the first louver 21 includes a first blade 212 and a first rotating shaft 211. The first blade 212 is rotatably connected to the main body frame 10 through the first rotating shaft 211. The axial direction of the first rotating shaft 211 is the first direction XX. The second louver 22 includes a second blade 222 and a second rotating shaft 221. The second blade 222 is rotatably connected to the main body frame 10 through the second rotating shaft 221. The axial direction of the second rotating shaft 221 is the second direction YY.

[0034] In an embodiment, the distance between two adjacent first rotating shafts 211 can be less than or equal to the width of the first blade 212, so that when needed, the first blade 212 can completely cover the gap between two adjacent first louvers 21, thereby making the ventilation channel 11 in a closed state; the distance between two adjacent second rotating shafts 221 can be less than or equal to the width of the second blade 222, so that when needed, the second blade 222 can completely cover the gap between two adjacent second louvers 22, thereby making the ventilation channel 11 in a closed state.

[0035] Continue to refer to Figures 1 to 3 As shown, in some embodiments of the present application, the noise reduction mechanism 20 further includes a first connecting member 23 and a second connecting member 24. All the first louvers 21 are connected to the first connecting member 23; all the second louvers 22 are connected to the second connecting member 24. It can be understood that all the first louvers 21 can be connected together through the first connecting member 23. When driving one first louver 21 to rotate through the driving mechanism 30, all the first louvers 21 are driven to rotate synchronously through the first connecting member 23. All the second louvers 22 can be connected together through the second connecting member 24. When driving one second louver 22 to rotate through the driving mechanism 30, all the second louvers 22 are driven to rotate synchronously through the second connecting member 24, thereby improving the opening and closing efficiency of the first louvers 21 and the second louvers 22.

[0036] Specifically, the first connecting member 23 extends along the second direction YY. The first rotating shaft 211 is rotatably connected to the first connecting member 23 through a first connecting rod 25. When the driving mechanism 30 drives the first rotating shaft 211 to rotate around the first direction XX, it drives the first connecting member 23 to move along the second direction YY, and further drives other first rotating shafts 211 to rotate around the first direction XX; the second connecting member 24 extends along the first direction XX. The second rotating shaft 221 is rotatably connected to the second connecting member 24 through a second connecting rod 26. When the driving mechanism 30 drives the second rotating shaft 221 to rotate around the second direction YY, it drives the second connecting member 24 to move along the first direction XX, and further drives other second rotating shafts 221 to rotate around the second direction YY.

[0037] In one embodiment, the first louver 21 includes first vanes 212, the second louver 22 includes second vanes 222, and a sound insulation layer 27 is coated on the first vanes 212 or / and the second vanes 222. It can be understood that the sound insulation layer 27 is coated on at least one of the first louver 21 and the second louver 22, and the sound insulation layer 27 can be made of sound-absorbing cotton, sound insulation felt, sound insulation board or other materials, which can effectively improve the noise reduction effect of the noise reduction mechanism 20. Among them, the sound insulation layer 27 can be fixed on the first vanes 212 or / and the second vanes 222 by non-detachable means such as bonding, and the sound insulation layer 27 can be arranged on the first vanes 212 or / and the second vanes 222 by detachable means such as socketing.

[0038] In one embodiment, the driving mechanism 30 can be arranged in the ventilation channel 11, and the ventilation channel 11 can be used to provide an accommodation space for the driving mechanism 30, so as to reduce the overall volume of the noise reduction device; in addition, the airflow flowing through the ventilation channel 11 can also be used to dissipate heat for the driving mechanism 30 to meet the heat dissipation requirements of the driving mechanism 30.

[0039] Specifically, the driving mechanism 30 can include a first driving member 31 and a second driving member 32. The first driving member 31 is in transmission connection with the first louver 21, and the first driving member 31 is used to drive the first louver 21 to rotate. The second driving member 32 is in transmission connection with the second louver 22, and the second driving member 32 is used to drive the second louver 22 to rotate. The first driving member 31 and the second driving member 32 can be driving members such as electric cylinders, motors or electric motors. More specifically, the output shaft of the first driving member 31 is connected to a first rotating shaft 211, and the first driving member 31 is used to drive the first rotating shaft 211 to rotate. The output shaft of the second driving member 32 is connected to a second rotating shaft 221, and the second driving member 32 is used to drive the second rotating shaft 221 to rotate. It should also be noted that the control component 50 can control the first driving member 31 and the second driving member 32 to work independently, so that the first louver 21 and the first louver 22 can rotate independently. For example, the control component 50 can control the first driving member 31 to operate while controlling the second driving member 32 to be in a stopped state. At this time, the first louver 21 rotates while the second louver 22 is stationary; the control component 50 can also control the first driving member 31 and the second driving member 32 to work simultaneously, so that the first louver 21 and the first louver 22 can rotate simultaneously.

[0040] In one embodiment, the driving mechanism 30 can further include a protective shell 33. The protective shell 33 has a first protective cavity and a second protective cavity that are isolated from each other. The first driving member 31 is located in the first protective cavity, and the second driving member 32 is located in the second protective cavity. The protective shell 33 provides protection and limit for the first driving member 31 and the second driving member 32.

[0041] In one embodiment, an avoidance notch 28 is provided on the noise reduction mechanism 20, and the driving mechanism 30 is located in the avoidance notch 28. It is not necessary to arrange the driving mechanism 30 and the noise reduction mechanism 20 in the thickness direction of the main body frame 10, which can reduce the overall thickness and volume of the noise reduction device.

[0042] Continue to refer to Figures 1 to 3 As shown, in some embodiments of the present application, the detection component 40 includes a plurality of temperature sensors 41 and a plurality of sound sensors 42. The temperature sensor 41 is used to detect the temperature of the target area and output a corresponding temperature signal, and the sound sensor 42 is used to detect the sound of the target area and output a corresponding sound signal.

[0043] Among them, the temperature sensors 41 and the sound sensors 42 are arranged alternately in sequence. It can be understood that by providing a plurality of temperature sensors 41 and a plurality of sound sensors 42, and arranging the temperature sensors 41 and the sound sensors 42 alternately, a sufficient distance can be provided between adjacent two temperature sensors 41 and between adjacent two sound sensors 42, so that the temperature and sound intensity of more areas can be detected to obtain more accurate detection results.

[0044] Specifically, the temperature sensors 41 and the sound sensors 42 can be arranged alternately in the third direction. The third direction can be any direction in the plane formed by the intersection of the first direction XX and the second direction YY. The third direction can be parallel to the first direction XX or the second direction YY, or the third direction can intersect with the first direction XX and the second direction YY.

[0045] In some embodiments of the present application, the noise reduction device further includes a display screen 60. The display screen 60 is communicatively connected to the control component 50. The display screen 60 can be communicatively connected to the control component 50 by means of a wired connection or a wireless connection. The control component 50 can record information such as the temperature and sound intensity fed back by the detection component 40, and store and display it on the display screen 60. The user can intuitively see the working state of the noise reduction device from the display screen 60, and can monitor the temperature and noise of the electrical equipment in real time. Moreover, the user can also view the historical working records of the noise reduction device from the display screen 60. Among them, the display screen 60 can be a liquid crystal display (LCD), an organic light-emitting diode display (OLED), a plasma display panel (PDP), or other types of display screens. The present application does not limit the type of the display screen 60. Further, the display screen 60 can be a touch display screen, and the user can control the control component 50 by touching the display screen 60, and further control the operation of the driving mechanism 30.

[0046] As Figures 1 to 4 shown, in some embodiments of the present application, the main frame 10 includes a first housing 12 and a second housing 13. The first housing 12 has a ventilation channel 11; the second housing 13 is disposed around the outer periphery of the first housing 12 and encloses a receiving cavity 14 with the first housing 12. It can be understood that the main frame 10 is a double-layer housing structure, which has better sound insulation effect, and the receiving cavity 14 between the first housing 12 and the second housing 13 also has good sound insulation effect, so as to enhance the sound insulation performance of the main frame 10.

[0047] In one embodiment, the main frame 10 further includes a connecting lug 15. The connecting lug 15 is connected to the first housing 12 or / and the second housing 13, and the noise reduction device can be connected to the device main body through the connecting lug 15, so as to realize the connection between the noise reduction device and the device main body.

[0048] In one embodiment, the control component 50 is disposed in the receiving cavity 14 to provide a receiving space and protection for the control component 50 by using the receiving cavity 14, so as to make full use of the space of the receiving cavity 14, and then the overall volume of the noise reduction device can be reduced.

[0049] In one embodiment, the control component 50 may include a controller 51 and a battery. The controller 51 may be a microcontroller unit (MCU), a central processing unit (CPU), a programmable logic controller 51 (PLC), or a field programmable gate array controller 51 (FPGA), etc. The controller 51 may communicate with electronic devices such as the detection component 40, the control component 50, and the display screen 60 in a wired or wireless connection manner; the battery may be a storage battery or a dry battery. The controller 51 may be connected to an external power source (such as a power grid) to supply power to the entire noise reduction device by using the power grid, and the battery may also supply power to the entire noise reduction device to support the independent operation of the noise reduction device in a short time. In one embodiment, the display screen 60 and the detection component 40 may both be disposed on the controller 51, and the display surface of the display screen 60 and the detection end of the detection component 40 both pass through the side of the main frame 10 provided with an air inlet or an air outlet to expose from the receiving cavity 14.

[0050] In one embodiment, both the first connecting member 23 and the second connecting member 24 are located in the accommodation cavity 14. One end of the first rotating shaft 211 extends into the accommodation cavity 14 and is connected to the first connecting member 23, and one end of the second rotating shaft 221 extends into the accommodation cavity 14 and is connected to the second connecting member 24, so that the space of the accommodation cavity 14 can be fully utilized, and thus the overall volume of the noise reduction device can be reduced.

[0051] In a second aspect, based on the noise reduction device provided above, the present application further provides an electrical device, which includes a device main body and the noise reduction device according to any one of the above embodiments. The device main body has an air inlet and an air outlet, and the noise reduction device is installed at the air inlet or / and the air outlet, and the air inlet or / and the air outlet is communicated with the ventilation channel 11.

[0052] Among them, the electrical device can be a radiator, a computer case, a high-voltage device, an indoor unit of an air conditioner or other devices with heat dissipation requirements.

[0053] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A noise reduction device, characterized in that: include: a main frame having ventilation channels; a noise reduction mechanism, arranged on the main frame and used for opening and closing the ventilation passage, the noise reduction mechanism comprising a plurality of first louvers and a plurality of second louvers; the plurality of first louvers extend along a first direction, are arranged along a second direction, and can rotate around the first direction relative to the main frame; the plurality of second louvers extend along the second direction, are arranged along the first direction, and can rotate around the second direction relative to the main frame; wherein the second direction is perpendicular to the first direction; A detection component, used to detect the temperature and sound intensity of the target area and output corresponding temperature signals and sound signals; and, A control component is communicatively connected with the detection component, and is used to control the rotation of the first louver and the second louver according to the temperature signal and the sound signal, so as to adjust the opening and closing angles of the first louver and the second louver.

2. The noise reduction device according to claim 1, characterized in that: The noise reduction mechanism also includes: a first connecting member, all of the first louvers are connected to the first connecting member; A second connecting member, all of the second louvers are connected to the second connecting member.

3. The noise reduction device according to claim 1, characterized in that: The first louver includes a first blade, the second louver includes a second blade, and the first blade and / or the second blade are covered with a sound insulation layer.

4. The noise reduction device according to claim 1, characterized in that: The detection component comprises: A plurality of temperature sensors, wherein the temperature sensors are used to detect the temperature of the target area and output corresponding temperature signals; A plurality of sound sensors, wherein the sound sensors are used to detect the sound in the target area and output corresponding sound signals; Wherein, the temperature sensors and the sound sensors are arranged alternately in sequence.

5. The noise reduction device according to claim 1, characterized in that: The main framework includes: A first shell having the ventilation channel; The second shell is arranged around the outer circumference of the first shell and forms a containing cavity with the first shell.

6. The noise reduction device according to claim 5, characterized in that: The control component is arranged in the accommodating cavity.

7. The noise reduction device according to claim 1, characterized in that: The noise reduction device further comprises: A driving mechanism is arranged on the main frame, and the first louver and the second louver are respectively connected to the driving mechanism by transmission; Wherein, the control component is communicatively connected with the driving mechanism, and the control component is used to control the driving mechanism to drive the first louver and the second louver to rotate according to the temperature signal and the sound signal, so as to adjust the opening and closing angles of the first louver and the second louver.

8. The noise reduction device according to claim 7, characterized in that: The driving mechanism is arranged in the ventilation passage; and / or, a avoiding gap is arranged on the noise reduction mechanism, and the driving mechanism is located in the avoiding gap.

9. The noise reduction device according to claim 1, characterized in that: The noise reduction device also includes a display screen, which is communicatively connected to the control component.

10. An electrical device, characterized in that: It comprises an equipment body and a noise reduction device as described in any one of claims 1 to 9, wherein the equipment body has an air inlet and an air outlet, the noise reduction device is installed at the air inlet and / or the air outlet, and the air inlet and / or the air outlet is connected to the ventilation channel.

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