Low-noise centrifugal fan for automobile air conditioner

Abstract

The utility model relates to the field of centrifugal fans, and discloses a low-noise centrifugal fan for an automobile air conditioner, which comprises a base, a vibration reduction component, a centrifugal fan body and an elastic clamping component, the centrifugal fan body is mounted on the base through the vibration reduction component, an air inlet of the centrifugal fan body is provided with a fixing ring, the fixing ring is fixedly connected with a protective net, and the protective net is fixedly connected with the base. An elastic clamping assembly is mounted on the fixing ring, the elastic clamping assembly comprises a handle part and elastic clamping parts, and the elastic clamping parts are arranged at the two ends of the handle part; the vibration reduction assembly has the vibration reduction function in the vertical direction and the horizontal direction, the vibration reduction and noise reduction effect is better than that of an existing buffering assembly, and the assembly is simple in structure and higher in practicability; according to the centrifugal fan, the protective net can be rapidly disassembled and assembled through the elastic clamping assembly, the structure of the position of the air inlet does not need to be changed, the machining cost of the centrifugal fan body can be reduced, and due to the fact that the protective net and the air inlet are fixed in a clamping mode, better firmness is achieved.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal fans, in particular to a low-noise centrifugal fan for automobile air conditioners. Background Art

[0002] The main structure of a centrifugal fan includes a volute, a motor and a wind wheel. Its working principle is to use a motor to drive the wind wheel to generate high-pressure airflow to meet the needs of ventilation, dust removal and cooling.

[0003] A low-noise centrifugal fan is disclosed in the Chinese utility model patent with announcement number CN 219388203 U. The invention mainly provides a sliding assembly, a buffer spring and a buffer assembly, etc. The buffer assembly can provide a certain buffer to the centrifugal fan body, thereby reducing the noise generated by the centrifugal fan body when it is working. The sliding assembly can make the fixed plate rise and fall smoothly in the groove. At the same time, the buffer spring can provide a certain buffer to the fixed plate when the fixed plate rises, thereby reducing the impact of vibration generated by the centrifugal fan body and avoiding the centrifugal fan body from emitting a large noise that affects the surrounding environment and the physical and mental health of personnel. By providing slots, plugs and connecting grooves, etc., the protective net is installed on the air inlet through the slots, plugs and connecting grooves instead of bolts. This process does not require the use of tools, and the installation is relatively quick and convenient for subsequent disassembly of the protective net for cleaning or replacement.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: first, the above-mentioned buffer assembly can only reduce the vibration of the centrifugal fan body in the vertical direction, but cannot reduce the vibration in the horizontal direction, so the noise reduction effect is poor; second, in order to install the protective net, it is necessary to open connecting grooves and slots on the centrifugal fan body, but this will increase the manufacturing difficulty of the centrifugal fan body and increase the processing cost, and because the protective net is designed to be rotatably installed, there is a risk of the protective net falling off when the centrifugal fan body vibrates. Utility Model Content

[0005] In order to solve the technical problems of poor noise reduction effect of buffer components, increased manufacturing cost of centrifugal fan body and easy falling off of protection net, the utility model provides a low-noise centrifugal fan for automobile air conditioner.

[0006] The utility model is implemented by the following technical scheme: a low-noise centrifugal fan for automobile air conditioning, comprising a base, a vibration reduction assembly, a centrifugal fan body and an elastic clamping assembly, wherein the centrifugal fan body is mounted on the base through the vibration reduction assembly, an air inlet of the centrifugal fan body is provided with a fixing ring, a protective net is fixedly connected to the fixing ring, an elastic clamping assembly is installed on the fixing ring, the elastic clamping assembly comprises a handle and an elastic clamping portion, and the elastic clamping portion is arranged at both ends of the handle, the handle is fixedly connected to the fixing ring, and the elastic clamping portion is clamped and fixed to the air inlet of the centrifugal fan body.

[0007] Through the above technical solution, the protective net is installed using a fixing ring, and the fixing ring is fixed to the air inlet by an elastic clamping assembly, and the handle makes it convenient to take the protective net.

[0008] As a further improvement of the above solution, an avoidance groove is provided on the fixing ring at a position corresponding to the elastic clamping portion.

[0009] Through the above technical solution, the avoidance groove is used to avoid deformation of the elastic clamping part.

[0010] As a further improvement of the above scheme, the vibration reduction assembly includes a fixed seat, a slider, a fixed rod, a spring, a connecting shaft, a guide groove, a cover plate, a through hole, a sleeve, a mounting hole and a guide rod, and the fixed seat is fixedly connected to the base, the slider is slidably connected inside the fixed seat, six fixed rods are evenly distributed on the outer wall of the slider, a spring is sleeved on the fixed rod, and one end of the spring is fixedly connected to the slider, and the other end is fixedly connected to the fixed seat.

[0011] Through the above technical solution, the vibration reduction assembly uses the fixed seat to carry the slider, the slider is installed with a spring through the fixed rod, and the spring provides a buffer for the movement or rotation of the slider.

[0012] As a further improvement of the above solution, a cover plate is provided at the top of the sliding block, and the cover plate is fixedly connected to the fixing seat, and a through hole is opened on the cover plate.

[0013] Through the above technical solution, the cover plate is used to limit the sliding block.

[0014] As a further improvement of the above scheme, a connecting shaft is fixedly connected to the slider, and the connecting shaft is sleeved in the through hole. A sleeve is sleeved on the connecting shaft, and two mounting holes are provided on the sleeve. A guide rod is fixedly connected in the mounting hole.

[0015] Through the above technical solution, the through hole is used to accommodate the connecting shaft, the sleeve is used to connect the connecting shaft and the centrifugal fan body, and the mounting hole is used to install the guide rod.

[0016] As a further improvement of the above solution, a guide groove is provided on the connecting shaft at a position corresponding to the guide rod, and the guide rod is slidably connected in the guide groove.

[0017] Through the above technical solution, the guide rod is used in conjunction with the guide groove, and the sleeve drives the connecting shaft.

[0018] Compared with the prior art, the beneficial effects of the utility model are: the vibration reduction component of the utility model has vertical and horizontal vibration reduction functions, and the vibration reduction and noise reduction effects are better than those of the existing buffer components, and the component structure is simple and more practical; the utility model realizes the rapid disassembly and assembly of the protective net through the elastic snap-fit ​​component, without changing the structure of the air inlet position, which can reduce the processing cost of the centrifugal fan body, and because it is fixed to the air inlet by snap-fitting, it has better firmness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional cutaway structure of the vibration reduction component of the utility model;

[0021] Figure 3 It is an exploded view of the three-dimensional structure of the vibration reduction component of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing ring of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the elastic clamping assembly of the utility model.

[0024] Description of main symbols:

[0025] 1. Base; 2. Vibration reduction assembly; 21. Fixed seat; 22. Slider; 23. Fixed rod; 24. Spring; 25. Connecting shaft; 26. Guide groove; 27. Cover plate; 28. Through hole; 29. ​​Sleeve; 210. Mounting hole; 211. Guide rod; 3. Centrifugal fan body; 31. Fixed ring; 32. Protective net; 33. Avoidance groove; 4. Elastic clamping assembly; 41. Handle; 42. Elastic clamping part. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] Embodiment 1:

[0028] Please combine Figure 1 - Figure 5A low-noise centrifugal fan for automobile air conditioning in this embodiment includes a base 1, a vibration reduction component 2, a centrifugal fan body 3 and an elastic clamping component 4. The centrifugal fan body 3 is installed on the base 1 through the vibration reduction component 2. The air inlet of the centrifugal fan body 3 is provided with a fixing ring 31, and a protective net 32 ​​is fixedly connected to the fixing ring 31. The elastic clamping component 4 is installed on the fixing ring 31. The elastic clamping component 4 includes a handle part 41 and an elastic clamping part 42, and the elastic clamping part 42 is provided at both ends of the handle part 41. The handle part 41 is fixedly connected to the fixing ring 31, and the elastic clamping part 42 is clamped and fixed to the centrifugal fan body. The air inlet of the body 3 is provided with a fixing ring 31 to install a protective net 32. The fixing ring 31 is fixed to the air inlet by an elastic clamping assembly 4, and the handle 41 is convenient for taking the protective net 32. An avoidance groove 33 is provided at a position corresponding to the elastic clamping portion 42 on the fixing ring 31, and the avoidance groove 33 is used to avoid deformation of the elastic clamping portion 42. The vibration reduction assembly 2 includes a fixing seat 21, a slider 22, a fixing rod 23, a spring 24, a connecting shaft 25, a guide groove 26, a cover plate 27, a through hole 28, a sleeve 29, a mounting hole 210 and a guide rod 211, and the fixing seat 21 is fixedly connected to the base 1, and the fixing seat 21 The inner sliding connection is provided with a slider 22, and six fixing rods 23 are evenly distributed on the outer wall of the slider 22. A spring 24 is sleeved on the fixing rod 23, and one end of the spring 24 is fixedly connected to the slider 22, and the other end is fixedly connected to the fixing seat 21. The vibration reduction assembly 2 uses the fixing seat 21 to carry the slider 22, and the slider 22 is installed with the spring 24 through the fixing rod 23. The spring 24 provides a buffer for the movement or rotation of the slider 22; a cover plate 27 is provided at the top of the slider 22, and the cover plate 27 is fixedly connected to the fixing seat 21. A through hole 28 is opened on the cover plate 27, and the cover plate 27 is used to limit the slider 22; the slider 22 is fixed A connecting shaft 25 is connected, and the connecting shaft 25 is sleeved in the through hole 28. A sleeve 29 is sleeved on the connecting shaft 25. Two mounting holes 210 are provided on the sleeve 29. A guide rod 211 is fixedly connected in the mounting hole 210. The through hole 28 is used to accommodate the connecting shaft 25. The sleeve 29 is used to connect the connecting shaft 25 and the centrifugal fan body 3. The guide rod 211 is installed by the mounting hole 210. A guide groove 26 is provided on the connecting shaft 25 at a position corresponding to the guide rod 211, and the guide rod 211 is slidably connected in the guide groove 26. The guide rod 211 cooperates with the guide groove 26, and the sleeve 29 drives the connecting shaft 25.

[0029] The implementation principle of a low-noise centrifugal fan for automobile air conditioning in the embodiment of the present application is as follows: the vibrations generated by the centrifugal fan body 3 during operation are divided into vertical and horizontal directions. The vibrations in the vertical direction will be transmitted to the sleeve 29. Through the guide rod 211 cooperating with the guide groove 26, the up and down movement of the sleeve 29 will drive the connecting shaft 25 to rotate, and the connecting shaft 25 drives the slider 22. The slider 22 drives the spring 24 to deform through the fixing rod 23. Under the elastic force of the spring 24, the rotation of the slider 22 will be buffered; the vibrations in the horizontal direction will be transmitted to the connecting shaft 25 through the sleeve 29, and the connecting shaft 25 drives the slider 22. The slider 22 slides in the fixing seat 21, and the spring 24 will buffer the sliding of the slider 22, thereby reducing vibration. Component 2 realizes vibration reduction and noise reduction of the centrifugal fan body 3; when installing the protective net 32, the fixing ring 31 equipped with the protective net 32 ​​can be picked up by the handle 41, and one of the elastic clamping parts 42 is installed into the air inlet of the centrifugal fan body 3, and force is applied to deform it, so that the other elastic clamping part 42 can be installed into the air inlet of the centrifugal fan body 3, and then the force is stopped, and under the elastic action, the elastic clamping part 42 is clamped at the air inlet, thereby completing the installation of the protective net 32; wherein, the mounting hole 210 is used to install the guide rod 211, the cover plate 27 is used to limit the slider 22, the through hole 28 is used to accommodate the connecting shaft 25, the base 1 is used to install the vibration reduction component 2, and the avoidance groove 33 is used to avoid the deformation of the elastic clamping part 42.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A low-noise centrifugal fan for automobile air conditioning, comprising a base (1), a vibration reduction assembly (2), a centrifugal fan body (3) and an elastic clamping assembly (4), characterized in that: The centrifugal fan body (3) is mounted on the base (1) via a vibration reduction assembly (2); the air inlet of the centrifugal fan body (3) is provided with a fixing ring (31); a protective net (32) is fixedly connected to the fixing ring (31); an elastic clamping assembly (4) is installed on the fixing ring (31); the elastic clamping assembly (4) comprises a handle portion (41) and an elastic clamping portion (42); the elastic clamping portion (42) is arranged at both ends of the handle portion (41); the handle portion (41) is fixedly connected to the fixing ring (31); and the elastic clamping portion (42) is clamped and fixed to the air inlet of the centrifugal fan body (3).

2. A low-noise centrifugal fan for automobile air conditioning as claimed in claim 1, characterized in that: An avoidance groove (33) is provided on the fixing ring (31) at a position corresponding to the elastic clamping portion (42).

3. A low-noise centrifugal fan for automobile air conditioning as claimed in claim 1, characterized in that: The vibration reduction assembly (2) comprises a fixed seat (21), a slider (22), a fixed rod (23), a spring (24), a connecting shaft (25), a guide groove (26), a cover plate (27), a through hole (28), a sleeve (29), a mounting hole (210) and a guide rod (211), wherein the fixed seat (21) is fixedly connected to the base (1), the slider (22) is slidably connected inside the fixed seat (21), six fixed rods (23) are evenly distributed on the outer wall of the slider (22), a spring (24) is sleeved on the fixed rod (23), one end of the spring (24) is fixedly connected to the slider (22), and the other end is fixedly connected inside the fixed seat (21).

4. A low-noise centrifugal fan for automobile air conditioning as claimed in claim 3, characterized in that: A cover plate (27) is provided at the top of the sliding block (22), and the cover plate (27) is fixedly connected to the fixing seat (21), and a through hole (28) is provided on the cover plate (27).

5. A low-noise centrifugal fan for automobile air conditioning as claimed in claim 3, characterized in that: The slider (22) is fixedly connected with a connecting shaft (25), and the connecting shaft (25) is sleeved in the through hole (28). The connecting shaft (25) is sleeved with a sleeve (29), and the sleeve (29) is provided with two mounting holes (210). A guide rod (211) is fixedly connected in the mounting hole (210).

6. A low-noise centrifugal fan for automobile air conditioning as claimed in claim 3, characterized in that: A guide groove (26) is provided on the connection shaft (25) at a position corresponding to the guide rod (211), and the guide rod (211) is slidably connected in the guide groove (26).

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