A stuccing machine

Abstract

The present application provides a kind of ceiling machine, including shell, the cavity formed by the shell is sequentially arranged motor, wind wheel assembly, the motor is connected with the drive of wind wheel assembly, the lower portion of the shell is arranged water pan, air inlet screen cover, the air inlet screen cover with the water pan is detachably connected and is concentrically arranged with the wind wheel assembly, the projection area of the air inlet screen cover, wind wheel assembly in horizontal plane is respectively S1, S2, wherein S1≥S2.The ceiling machine of the present application can complete the disassembly and assembly of the internal wind wheel assembly and motor without disassembling the water pan, making the ceiling machine easy to disassemble, clean and maintain with high efficiency;It can comb the inlet airflow, further reduce the operating noise, effectively prevent foreign matter from entering the wind wheel assembly, and run more fully and efficiently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a ceiling machine. BACKGROUND

[0002] The ceiling machine is a ceiling embedded air conditioner, also known as a ceiling machine, a ceiling machine or an embedded air conditioner, which has the advantages of good heating / cooling effect and wide radiation area, and is favored by users in large spaces such as shopping malls, large venues and office buildings. With the improvement of living quality, clean living environment is widely expected by users; and the ceiling machine is prone to accumulate dust on the internal wind wheel and other components after a period of use, thereby causing microbial breeding, especially in hot and humid environment in summer, the cleaning operation of the ceiling machine is increasingly common.

[0003] The existing ceiling machine usually fixes the motor on the bottom plate, and then sequentially installs the bottom plate foam, evaporator, wind wheel assembly, water pan and other structures. If the wind wheel needs to be cleaned or the motor needs to be repaired, the water pan needs to be removed due to the limiting of the water pan before the above operations can be performed, resulting in a long time-consuming and low efficiency of the whole process.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The problem solved by the present application is that the unreasonable structure of the existing ceiling machine leads to complicated cleaning and repair operations of the wind wheel assembly or the motor, and low disassembly efficiency.

[0006] To solve the above problems, the present application provides a ceiling machine, which comprises a shell, a motor and a wind wheel assembly arranged in the cavity formed by the shell in sequence, the motor is drivingly connected with the wind wheel assembly, a water pan and an air inlet mesh cover are arranged below the shell, the air inlet mesh cover is detachably connected with the water pan and is concentrically arranged with the wind wheel assembly, the projection areas of the air inlet mesh cover and the wind wheel assembly on the horizontal plane are S1 and S2 respectively, and S1 is greater than or equal to S2.

[0007] The present application can not only comb the air inlet airflow to further reduce the operating noise by the air inlet mesh cover, but also can completely expose the wind wheel assembly and the motor after the air inlet mesh cover is removed, so that the internal wind wheel assembly and the motor can be disassembled without removing the water pan, so that the ceiling machine is easy to disassemble, and the cleaning and repair operation efficiency is high. The air inlet mesh cover can prevent foreign matters from entering the wind wheel assembly and prevent the operator from contacting the rotating wind wheel assembly, so that the ceiling machine operates more safely and reliably. Preferably, S1 is 1.05*S2. This setting does not need to redesign the water pan, and the change is small. At the same time, a certain gap is left when the wind wheel assembly is disassembled, so that the disassembly efficiency is high.

[0008] Preferably, the air inlet net cover comprises a ring-shaped frame, a wind guide grid, a support, the wind guide grid is located between the ring-shaped frame and the support, a wind guide ring is arranged on the side of the ring-shaped frame away from the wind guide grid, the wind wheel assembly part extends into the wind guide ring, and the maximum area of the projection of the wind guide ring on a horizontal plane is S3 and S3 < S1.

[0009] The arrangement can shield the gap between the wind guide ring and the wind wheel assembly part, prevent hands from being inserted and touched by mistake, guide the air flow into the wind wheel assembly part as much as possible, effectively prevent air leakage from the gap between the two, and have good noise reduction effect, large conveying air volume and low energy consumption.

[0010] Preferably, an avoiding hole is formed on the water pan at a position corresponding to the wind wheel assembly part, for limiting assembly of the air inlet net cover, a slot is arranged on the water pan and distributed along the outer circumferential side of the avoiding hole, an insertion buckle is arranged on the edge of the ring-shaped frame and limited to be assembled into the slot.

[0011] During assembly, the air inlet net cover is embedded in the avoiding hole, then the air inlet net cover is rotated clockwise or counterclockwise so that the insertion buckle is inserted into the slot, and the assembly is completed. The avoiding hole can ensure that the air inlet net cover does not deviate during rotation, and has high disassembly and assembly efficiency. There is almost no gap between the air inlet net cover and the water pan, all the air inlet flow passes through the air inlet net cover and enters the wind wheel assembly part, the air inlet flow can be combed by using the air inlet net cover, and the noise is small.

[0012] Preferably, the insertion buckle comprises a connecting part and an insertion part, the connecting part is arranged along the radial direction of the ring-shaped frame, and the insertion part is arranged perpendicularly to the connecting part. The insertion part is tangent to the edge of the ring-shaped frame, the insertion part is embedded in the slot by rotating the air inlet net cover, and the structure is simple and convenient for production and processing.

[0013] Preferably, a limiting slot is arranged on one side of the insertion part, an assembly hole is arranged at a position corresponding to the limiting slot, and a bolt is limited to be assembled into the limiting slot after passing through the assembly hole. The arrangement can lock the slot and the insertion buckle by using one bolt, prevent the insertion buckle from being shaken out of the slot during operation, ensure the safety and stability of operation, and the like.

[0014] Preferably, the wind guide grid comprises axial wind guide strips and radial wind guide strips, the axial wind guide strips are arranged in a ring shape, a plurality of the axial wind guide strips are arranged concentrically between the ring-shaped frame and the support, the radial wind guide strips are arranged along the radial direction of the ring-shaped frame to connect the plurality of axial wind guide strips to each other, and an included angle A is formed between the curved surface of the axial wind guide strip and the central axis of the ring-shaped frame, wherein -90° ≤ A ≤ 90°.

[0015] The arrangement can comb the air inlet flow, reduce the resistance to the air flow, and make the air inlet noise smaller; in addition, the arrangement can prevent sundries from entering the ceiling machine, and improve the structural strength between adjacent radial air guide strips, so that the entire air inlet mesh cover is strengthened.

[0016] Preferably, an included angle between the curved surface of the axial air guide strip and the central axis of the annular frame gradually changes from the position close to the annular frame to the position close to the support. The arrangement can guide the air near the support to the air guide grille position, avoid the air from being blocked by the support and changing the flow direction, and cause air flow turbulence and noise.

[0017] Preferably, an included angle A1 between the curved surface of the axial air guide strip and the central axis of the annular frame at the position close to the annular frame, and an included angle A2 between the curved surface of the axial air guide strip and the central axis of the annular frame at the position close to the support satisfy -90°≤A1<0°<A2<45°. The arrangement can make the axial air guide strips at the edge and the center guide the air to the working area of the fan assembly at the same time, and the air inlet is smoother.

[0018] Preferably, the radial air guide strip is arc-shaped and protrudes away from the fan assembly, and the radial air guide strip is higher than the annular frame at the end close to the support.

[0019] The arrangement can further increase the air inlet area of the air inlet mesh cover, make the air inlet flow smoother, and at the same time, the air inlet area is larger in the working range of the fan blade of the fan assembly, the air inlet is smoother, thereby reducing the flow resistance of the air flow and the noise generated thereby.

[0020] Preferably, the air guide ring comprises a contraction part, an extension part, and an expansion part arranged concentrically and connected in sequence, the diameter of the contraction part at one end of the annular frame is larger than the diameter of the other end, the expansion part gradually expands outward from one end to the other end of the extension part, and the minimum distance between the expansion part and the fan assembly is X1, wherein the value of X1 ranges from 0.2 to 1.5 mm.

[0021] The arrangement can guide the air inlet flow by the air guide ring, thereby delivering more air inlet flow to the working area of the fan assembly; by arranging the expansion part, the air inlet flow entering the fan assembly can be quickly distributed to the entire fan assembly, preventing the air inlet flow from overflowing along the gap between the two, and the air guide effect is better; at the same time, the fan assembly can also avoid scratching the air inlet mesh cover during rotation and generating abnormal sound, and the noise is small.

[0022] Preferably, the longitudinal section of the support is semicircular, and the upper surface of the support is provided with a long slot, and the long slot is provided with a plurality of radial slots along the circumferential direction of the support. This arrangement can avoid turbulence in the middle position to reduce noise; at the same time, the support can be easily grabbed by the operator to apply force.

[0023] Compared with the prior art, the ceiling machine has the following beneficial effects: 1) the ceiling machine can complete the disassembly and assembly of the internal wind wheel assembly and the motor without disassembling the water receiving disc, so that the ceiling machine is easy to disassemble and assemble, and the cleaning and maintenance operation efficiency is high; 2) the air flow can be combed, the running noise is further reduced, and foreign matters can be effectively prevented from entering the wind wheel assembly; 3) the structure is simple and convenient for production and processing. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole schematic view of the ceiling machine according to the embodiment of the present application;

[0025] Figure 2 It is an exploded schematic view of the ceiling machine according to the embodiment of the present application;

[0026] Figure 3 It is a first perspective view of the ceiling machine according to the embodiment of the present application;

[0027] Figure 4 It is a longitudinal section view of the ceiling machine according to the embodiment of the present application; Figure 3 It is a partial enlarged view of A in the figure;

[0028] Figure 5 It is a partial enlarged view of B in the figure; Figure 3 It is a partial enlarged view of B in the figure;

[0029] Figure 6 It is an assembly schematic view of the air inlet mesh cover according to the embodiment of the present application;

[0030] Figure 7 It is a partial enlarged view of C in the figure; Figure 6 It is a partial enlarged view of C in the figure;

[0031] Figure 8 It is a longitudinal section view of the ceiling machine according to the embodiment of the present application;

[0032] Figure 9 It is a partial enlarged view of D in the figure; Figure 8 It is a partial enlarged view of D in the figure;

[0033] Figure 10 It is a top view of the air inlet mesh cover according to the embodiment of the present application;

[0034] Figure 11 It is a side view of the air inlet mesh cover according to the embodiment of the present application;

[0035] Figure 12A first perspective view of the air inlet mesh cover according to an embodiment of the present application;

[0036] Figure 13 A Figure 12 A local enlarged view at E;

[0037] Figure 14 A schematic view of the whole wind wheel assembly according to an embodiment of the present application.

[0038] Legend of reference signs:

[0039] 1 - wind wheel assembly; 11 - hub; 12 - bottom plate; 13 - guide ring; 14 - fan blade; 141 - clamping tooth; 142 - notch; 2 - motor; 21 - motor shaft; 22 - shaft sleeve; 3 - outer shell; 4 - air inlet mesh cover; 41 - annular frame; 411 - plug buckle; 4111 - connecting part; 4112 - plug part; 412 - limiting groove; 42 - air guide grille; 421 - axial air guide strip; 422 - radial air guide strip; 43 - air guide ring; 431 - contraction part; 432 - extension part; 433 - expansion part; 44 - support; 441 - slot; 5 - water pan; 51 - avoidance hole; 52 - insertion slot; 6 - evaporator. DETAILED DESCRIPTION

[0040] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the technical features in the embodiments of the present application can be combined with each other without conflict.

[0041] The terms "first", "second", "third", etc. are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0042] Unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. The first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0043] As Figures 1-14As shown, a ceiling machine comprises a shell 3, a motor 2 and a wind wheel assembly 1 arranged in the cavity of the shell 3 in sequence, the motor 2 is drivingly connected with the wind wheel assembly 1, a water pan 5 and an air inlet mesh cover 4 are arranged below the shell 3, the air inlet mesh cover 4 is detachably connected with the water pan 5 and is concentrically arranged with the wind wheel assembly 1, the projection area of the air inlet mesh cover 4 and the wind wheel assembly 1 on the horizontal plane is S1 and S2 respectively, and S1≥S2.

[0044] The air inlet mesh cover 4 can not only comb the air inlet flow and further reduce the operation noise, but also can completely expose the wind wheel assembly 1 and the motor 2 after the air inlet mesh cover 4 is detached, so that the wind wheel assembly 1 and the motor 2 can be disassembled without detaching the water pan 5, the ceiling machine is easy to disassemble, and the cleaning and maintenance operation efficiency is high; meanwhile, the air inlet mesh cover 4 can prevent foreign matters from entering the wind wheel assembly 1 and prevent the operator from contacting the rotating wind wheel assembly 1, so that the ceiling machine is more safe and reliable. Preferably, S1=1.05*S2. This setting does not need to redesign the water pan 5, and the change is small; meanwhile, a certain gap is left during the disassembly of the wind wheel assembly 1, so that the disassembly efficiency is high.

[0045] The shell 3 is also provided with an evaporator 6 located outside the wind wheel assembly 1 for heat exchange between the refrigerant and the airflow, and the specific structure and assembly relationship are the prior art, which will not be described here.

[0046] As a preferred example of the present application, the air inlet mesh cover 4 comprises a ring-shaped frame 41, an air guide grille 42 and a support 44, the air guide grille 42 is located between the ring-shaped frame 41 and the support 44, an air guide ring 43 is arranged on the side of the ring-shaped frame 41 away from the air guide grille 42, wherein part of the wind wheel assembly 1 extends into the air guide ring 43, and the projection of the air guide ring 43 on the horizontal plane is S3 and S3

[0047] The air inlet mesh cover 4 can shield the gap between the air guide ring 43 and the wind wheel assembly 1 to prevent the hand from being mistakenly touched, and can guide the air inlet flow into the wind wheel assembly 1 as much as possible, effectively avoid air leakage from the gap between the two, have good noise reduction effect, large conveying air volume and low energy consumption.

[0048] As an example of the present application, the water pan 5 is formed with a clearance hole 51 corresponding to the position of the wind wheel assembly 1, for limiting the assembly of the air inlet mesh cover 4, the water pan 5 is provided with a slot 52, the slot 52 is distributed along the outer circumferential side of the clearance hole 51, the edge of the annular frame 41 is provided with an insertion buckle 411, the insertion buckle 411 is limited to be assembled into the slot 52. When assembling, the air inlet mesh cover 4 is embedded in the clearance hole 51, then the air inlet mesh cover 4 is rotated clockwise or counterclockwise so that the insertion buckle 411 is inserted into the slot 52 to complete the assembly, the clearance hole 51 can ensure that the air inlet mesh cover 4 does not deviate during rotation, and the disassembly efficiency is high; there is almost no gap between the air inlet mesh cover 4 and the water pan 5, all the air inlet flow enters the wind wheel assembly 1 through the air inlet mesh cover 4, and the air inlet flow can be combed by using the air inlet mesh cover 4, and the noise is small.

[0049] Preferably, the insertion buckle 411 has 4-8 and is distributed along the circumferential side of the annular frame 41 at equal intervals. When the ceiling machine is installed, the weight of the entire air inlet mesh cover 4 is applied to the water pan 5 through the insertion buckle 411, which can balance the fastening and reliability of the assembly. Preferably, the insertion buckle 411 is higher than the annular frame 41 and is integrally formed. This setting makes the entire air inlet mesh cover 4 completely embedded in the clearance hole 51, and the assembled ceiling machine presents a simple line, giving a good visual effect.

[0050] As a preferred example of the present application, the insertion buckle 411 includes a connecting portion 4111 and an insertion portion 4112, the connecting portion 4111 is arranged along the radial direction of the annular frame 41, and the insertion portion 4112 is arranged perpendicular to the connecting portion 4111. This setting makes the insertion portion 4112 tangent to the edge of the annular frame 41, and by rotating the air inlet mesh cover 4, the insertion portion 4112 can be embedded in the slot 52, which is simple in structure and convenient for production and processing. Preferably, the minimum distance between the insertion portion 4112 and the annular frame 41 is M1, and the diameter of the annular frame 41 is M2, wherein M1=(0.02-0.05)*M2. This setting is compact in structure and tightly and firmly assembled with the water pan 5.

[0051] Preferably, one side of the insertion portion 4112 is provided with a limiting groove 412, the slot 52 is provided with an assembly hole at a position corresponding to the limiting groove 412, and a bolt is limited to be assembled into the limiting groove 412 after passing through the assembly hole. This setting can lock the slot 52 and the insertion buckle 411 with one bolt, prevent the air inlet mesh cover 4 from being shaken and coming out of the slot 52 during operation, and ensure safe and stable operation.

[0052] As a preferred example of the present application, the radial air guide strip 422 is arranged in an arc shape and protrudes away from the fan wheel assembly 1, and the end of the radial air guide strip 422 close to the support 44 is higher than the annular frame 41. This arrangement can further increase the air inlet area of the air inlet net cover 4, so that the air inlet flow is smoother; at the same time, the air inlet area is larger in the working range of the fan blade 14 close to the fan wheel assembly 1, and the air inlet is smoother, thereby reducing the flow resistance of the airflow and the noise generated thereby.

[0053] The air guide grille 42 described in the present application can comb the air inlet flow by arranging the axial air guide strips 421, reduce the obstruction to the airflow, and the air inlet noise is smaller; in addition, it can block impurities from entering the interior of the ceiling machine, and improve the structural strength between adjacent radial air guide strips 422, so that the entire air inlet net cover 4 is strengthened.

[0054] As a preferred example of the present application, the radial air guide strip 422 is arranged in an arc shape and protrudes away from the fan wheel assembly 1, and the end of the radial air guide strip 422 close to the support 44 is higher than the annular frame 41. This arrangement can further increase the air inlet area of the air inlet net cover 4, so that the air inlet flow is smoother; at the same time, the air inlet area is larger in the working range of the fan blade 14 close to the fan wheel assembly 1, and the air inlet is smoother, thereby reducing the flow resistance of the airflow and the noise generated thereby.

[0055] As a preferred example of the present application, the radial air guide strip 422 is arranged in an arc shape and protrudes away from the fan wheel assembly 1, and the end of the radial air guide strip 422 close to the support 44 is higher than the annular frame 41. This arrangement can further increase the air inlet area of the air inlet net cover 4, so that the air inlet flow is smoother; at the same time, the air inlet area is larger in the working range of the fan blade 14 close to the fan wheel assembly 1, and the air inlet is smoother, thereby reducing the flow resistance of the airflow and the noise generated thereby.

[0056] Preferably, the angle A1 between the curved surface of the axial air guide strip 421 close to the annular frame 41 and the central axis of the annular frame 41 is-90°≤A1<0°, and the angle A2 between the curved surface of the axial air guide strip 421 close to the support 44 and the central axis of the annular frame 41 is 0°<A2<45°. This arrangement can make the axial air guide strips 421 at the edge and the center simultaneously guide the air to the working area of the fan wheel assembly 1, and the air inlet is smoother.

[0057] Preferably, the angle between the curved surface of the axial air guide strip 421 at the highest point of the radial air guide strip 422 and the central axis of the annular frame 41 is 0°. This arrangement makes the air guide effect of the radial air guide strip 422 at the maximum air inlet area corresponding to the position of the fan wheel assembly 1 optimal, and the airflow resistance is minimal.

[0058] As an example of the present application, the air guide ring 43 comprises a contraction portion 431, an extension portion 432 and an expansion portion 433 arranged concentrically and connected in sequence, the diameter of the contraction portion 431 at one end of the annular frame 41 is larger than that at the other end, the expansion portion 433 gradually expands outward from one end to the other end of the extension portion 432, and the minimum distance between the expansion portion 433 and the wind wheel assembly 1 is X1, wherein X1 is in the range of 0.2-1.5mm.

[0059] This arrangement can guide the incoming air flow by the air guide ring 43, so as to deliver more incoming air flow to the working area of the wind wheel assembly 1; by arranging the expansion portion 433, the incoming air flow into the wind wheel assembly 1 can be quickly distributed to the entire wind wheel assembly 1, preventing it from overflowing along the gap between them, and the air guide effect is better; at the same time, it can also avoid the wind wheel assembly 1 from producing abnormal noise by scratching the incoming air screen 4 during rotation, and the noise is small.

[0060] As an example of the present application, the longitudinal section of the support 44 is semicircular, and the upper surface of the support 44 is provided with a long slot 441, and the long slot 441 is arranged radially along the circumference of the support 44. By arranging the support 44, turbulence can be avoided at the middle position to reduce noise; at the same time, by arranging the support 44, the operator can easily grasp and apply force.

[0061] As a preferred example of the present application, the wind wheel assembly 1 is fixedly arranged with a shaft sleeve 22 away from the motor 2, the motor 2 comprises a motor shaft 21, the motor shaft 21 passes through the shaft sleeve 22, the side of the shaft sleeve 22 is provided with an assembly hole, a locking member is installed in the assembly hole, the locking member passes through the assembly hole and abuts against the motor shaft 21 to realize the driving connection between the motor 2 and the wind wheel assembly 1.

[0062] This arrangement can realize the driving connection between the motor 2 and the wind wheel assembly 1 by one locking member, and the required parts are less, at the same time, the end of the motor shaft 21 does not need to be treated as flat, avoiding the alignment during installation, greatly improving the assembly efficiency. The motor 2 is fixedly arranged on the housing 3, and the assembly relationship between them is the prior art, which will not be described here.

[0063] Preferably, the central axis of the assembly hole and the central axis of the motor shaft 21 are arranged perpendicular to each other. Preferably, the free end of the bolt is interference-fitted with the side wall of the motor shaft 21, and the interference amount is greater than 0.5mm. This arrangement makes the motor shaft 21 not easy to slip when the motor 2 drives the wind wheel assembly 1 to rotate, and can consider the assembly difficulty and transmission reliability.

[0064] As an example of the present application, the wind wheel assembly 1 comprises a hub 11, a bottom plate 12, a guide ring 13, the lower end edge of the hub 11 extends to form the bottom plate 12, the bottom plate 12 is provided with a fan blade 14, the fan blade 14 is inserted on the bottom plate 12, the upper end of the fan blade 14 is inserted into the guide ring 13, the guide ring 13 partially extends into the air guide ring 43. When the motor 2 drives the wind wheel assembly 1 to rotate, air is introduced from the air inlet of the guide ring 13, and finally air is discharged from the air outlet 15, thereby realizing the circulation of air flow. Preferably, the distance that the guide ring 13 extends into the air guide ring 43 is 1-6mm. This setting can make the overall structure of the ceiling machine compact and the air guiding effect good.

[0065] An air outlet is formed between the bottom plate 12, the guide ring 13 and the fan blade 14. As a preferred example of the present application, the bottom plate 12 is provided with a blade insertion slot for realizing the installation and fixation of the fan blade 14; the blade insertion slots are distributed equidistantly along the circumferential side of the bottom plate 12. Preferably, the two ends of the fan blade 14 are respectively connected and assembled with the bottom plate 12 and the guide ring 13, which makes the fan blade 14, the bottom plate 12 and the guide ring 13 have a detachable structure, facilitating the maintenance and assembly of the wind wheel assembly 1; of course, the fan blade 14 can also be fixed with the bottom plate 12 and the guide ring 13 by adhesion to ensure firm assembly.

[0066] As a preferred example of the present application, the hub 11 partially protrudes from the guide ring 13, the shaft sleeve 22 is fixedly assembled on the hub 11 and located above the guide ring 13, and the minimum distance M1 between the shaft sleeve 22 and the guide ring 13 is 30-50mm. This setting is convenient to operate and easy to realize the locking of the motor shaft 21 and the wind wheel assembly 1.

[0067] As a preferred example of the present application, the fan blade 14 comprises a fan blade shell composed of a windward face and a leeward face, and the tail edge of the fan blade shell is provided with a tooth 141. The tooth 141 can stabilize the air flow at the air outlet, and cooperation with the air inlet mesh cover 4 can further reduce the air flow noise of the ceiling machine and improve the user's experience.

[0068] Preferably, the tail edge of the fan blade shell is provided with a notch 142, and the notch 142 is located below the tooth 141. The notch 142 is further arranged to reduce the air flow noise, improve the noise performance of the equipment, and improve the user's experience.

[0069] The width, height H3 and thickness of the notch 142 are respectively 16mm-25mm, 8mm-38mm and 1-2.5mm. It is found that the specific parameters and proportional relationship of the notch 142 have an impact on noise control. Through simulation and experimental measurement, the parameters are limited within the above defined range to achieve good results. On the one hand, the final formed fan blade 14 has a large air volume, ensuring the working efficiency of the fan blade 14. On the other hand, the setting helps to reduce airflow noise, and the air outlet noise can also be effectively controlled, so as to balance the noise control and the performance requirements of the fan blade 14. Preferably, the clamping teeth 141 are multiple and arranged in sequence from top to bottom along the trailing edge of the fan blade shell. The height H4 of the clamping teeth 141 is 100-150mm, and H3:H4=(3-18):1. This setting can minimize the running noise of the fan wheel assembly 1.

[0070] Although the present application is disclosed as above, the present application is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and the protection scope of the present application should be limited by the scope defined by the claims.

Claims

1. A ceiling fan, comprising a housing (3), wherein a motor (2) and a fan assembly (1) are sequentially arranged within a cavity formed by the housing (3), the motor (2) and the fan assembly (1) being drivenly connected, characterized in that, A water collection tray (5) and an air inlet screen (4) are provided below the outer shell (3). The air inlet screen (4) is detachably connected to the water collection tray (5) and is concentrically arranged with the impeller assembly (1). The projected areas of the air inlet screen (4) and the impeller assembly (1) on the horizontal plane are S1 and S2, respectively, where S1≥S2. The air inlet screen (4) includes an annular frame (41), an air guide grille (42), and a support member (44). The air guide grille (42) is located between the annular frame (41) and the support member (44). An air guide ring (43) is provided on the side of the annular frame (41) away from the air guide grille (42). Part of the impeller assembly (1) extends into the air guide ring (43). 3) The maximum area of ​​the circle where the projection on the horizontal plane is located is S3 and S3 < S1; the longitudinal section of the support member (44) is semi-circular, and the upper surface of the support member (44) is provided with a long groove (441), and there are multiple grooves (441) arranged radially along the circumference of the support member (44); the water receiving tray (5) is provided with a clearance hole (51) corresponding to the position of the wind turbine assembly (1) for limiting the assembly of the air inlet screen (4), and the water receiving tray (5) is provided with a slot (52), the slot (52) is distributed along the outer periphery of the clearance hole (51), and the edge of the annular frame (41) is provided with a buckle (411), and the buckle (411) is limited to the assembly into the slot (52).

2. The ceiling machine according to claim 1, characterized in that, The buckle (411) includes a connecting part (4111) and a plug-in part (4112). The connecting part (4111) is arranged radially along the annular frame (41), and the plug-in part (4112) is arranged perpendicular to the connecting part (4111).

3. The ceiling machine according to claim 2, characterized in that, A limiting groove (412) is provided on one side of the plug-in part (4112), and an assembly hole is provided at the corresponding position of the slot (52) and the limiting groove (412). After the bolt passes through the assembly hole, it is limited and assembled into the limiting groove (412).

4. The ceiling machine according to claim 1, characterized in that, The air guide grille (42) includes axial air guide strips (421) and radial air guide strips (422). The axial air guide strips (421) are arranged in a ring. Multiple axial air guide strips (421) are concentrically arranged between the ring frame (41) and the support member (44). The radial air guide strips (422) are arranged radially along the ring frame (41) so that multiple axial air guide strips (421) are connected to each other. The curved surface where the axial air guide strips (421) are located forms an angle A with the central axis of the ring frame (41), where -90°≤A≤90°.

5. The ceiling machine according to claim 4, characterized in that, The angle formed between the curved surface where the axial guide vane (421) is located and the central axis of the annular frame (41) gradually changes from the position near the annular frame (41) to the position near the support member (44).

6. The ceiling machine according to claim 4, characterized in that, The radial air guide strip (422) is arc-shaped and protrudes away from the wind turbine assembly (1). The radial air guide strip (422) is positioned higher than the annular frame (41) at one end near the support member (44).

7. The ceiling machine according to claim 1, characterized in that, The wind guide ring (43) includes a concentrically arranged and sequentially connected contraction section (431), extension section (432), and expansion section (433). The diameter of the contraction section (431) at one end of the annular frame (41) is larger than the diameter at the other end. The expansion section (433) gradually expands outward from one end near the extension section (432) to the other end. The minimum distance between the expansion section (433) and the wind turbine assembly (1) is X1, where the value of X1 ranges from 0.2 to 1.5 mm.

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