Fan assembly, air conditioner indoor unit and ducted air conditioner

Abstract

The utility model provides a kind of fan assembly, air conditioner indoor unit and ducted air conditioner, wherein fan assembly includes volute, the fan blade being arranged in volute inside, and the driving component for driving fan blade rotation, driving component includes motor, fan shaft and coupling, motor is equipped with motor shaft, fan shaft is worn in the shaft hole of fan blade, coupling is used to connect motor shaft and fan shaft;The utility model has realized when engineering needs to overhaul or replace motor, volute and fan blade do not need to be dismantled, only need to disassemble coupling, motor can be independently taken down;Not only facilitate the replacement process of motor when after-sales maintenance, but also effectively reduce the work intensity of after-sales staff, while it is favorable to reduce the maintenance space needed to be reserved when air conditioner indoor unit is installed, improve the flexibility and convenience of overall installation.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and more specifically, it relates to a fan assembly, an indoor air conditioning unit, and a duct-type air conditioner. Background Technology

[0002] In current air conditioner indoor unit designs using centrifugal fan blades, the motor typically has its own shaft, with the centrifugal fan blades fixed to this shaft. This design reduces the number of parts in the unit, simplifies the production process, and improves production efficiency. However, this ease of production does not equate to ease of after-sales maintenance. As the core power component of the air conditioner indoor unit, the motor is prone to failure during long-term operation. Repairing or replacing the motor requires first disassembling the volute in the fan assembly and removing the centrifugal fan blades from the motor shaft before the motor can be removed. This process places significant demands on maintenance space, especially for ceiling-mounted indoor units. Larger access panels are needed during installation, and the operation is not convenient for maintenance personnel working at heights, thus greatly increasing the difficulty of after-sales maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a fan assembly, an indoor air conditioning unit, and a duct-type air conditioner to solve the problem that in the prior art, the indoor air conditioning unit requires disassembly and reassembly of the volute and fan blades when inspecting, disassembling, and installing the motor, which increases the difficulty of maintenance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a fan assembly for an indoor unit of an air conditioner. The fan assembly includes a volute, a fan blade disposed inside the volute, and a drive component for driving the fan blade to rotate. The drive component includes a motor, a fan shaft, and a coupling. The motor has a motor shaft, the fan shaft passes through the shaft hole of the fan blade, and the coupling is used to connect the motor shaft and the fan shaft.

[0006] Furthermore, the motor shaft is provided with a snap ring for positioning the coupling.

[0007] Furthermore, the coupling is divided into two half couplings, which are detachably connected by fasteners. One half coupling has a fixing through hole for the fastener to pass through, and the other half coupling has a fixing countersunk hole for the fastener to pass through.

[0008] Furthermore, the half-coupling is made of metal.

[0009] Furthermore, the half-coupling includes a first metal contact portion sleeved on the fan shaft, a second metal contact portion sleeved on the motor shaft, and a rubber connecting portion for connecting the first metal contact portion and the second metal contact portion.

[0010] Furthermore, the volute includes a first volute, a second volute, and a third volute spaced apart; the fan blade includes a first fan blade disposed inside the first volute, a second fan blade disposed inside the second volute, and a third fan blade disposed inside the third volute; the motor shaft includes a first motor shaft and a second motor shaft disposed at both ends of the motor; the fan shaft includes a first fan shaft passing through the shaft hole of the first fan blade and a second fan shaft passing through the shaft holes of the second and third fan blades; and the coupling includes a first coupling for connecting the first motor shaft and the first fan shaft, and a second coupling for connecting the second motor shaft and the second fan shaft.

[0011] Furthermore, the end of the second fan blade shaft away from the second motor shaft is connected to the bearing component.

[0012] Furthermore, the bearing component includes a bearing sleeved on the second fan blade shaft, a support seat for supporting the bearing, and a fixing cover for fixing the bearing on the support seat.

[0013] This utility model also provides an indoor air conditioning unit, including the fan assembly as described above.

[0014] This utility model also provides a ducted air conditioner, including the air conditioner indoor unit as described above.

[0015] Compared with existing technologies, the beneficial effects of the fan assembly, indoor air conditioning unit, and ducted air conditioner provided by this utility model are as follows: In the fan assembly proposed by this utility model, the motor shaft and the fan shaft are independently set, and the two are connected and transmitted through a coupling; this allows the motor to be removed independently without disassembling the volute and fan blades when the motor needs to be inspected or replaced during engineering, simply by disassembling the coupling. This not only simplifies the motor replacement process during after-sales maintenance but also effectively reduces the workload of after-sales personnel. Furthermore, it helps to reduce the maintenance space required during the installation of the indoor air conditioning unit, improving the overall installation flexibility and convenience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a preferred front view of the indoor unit of the air conditioner in this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point C in the middle;

[0019] Figure 3 This is a perspective view of a preferred indoor air conditioning unit of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a cross-sectional view of an optional half-coupling in this utility model.

[0022] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0023] Figure 7 This is an exploded view of a preferred bearing component of this utility model;

[0024] Figure 8 This is a perspective view of a preferred bearing component in this utility model;

[0025] The main markings in the attached figures are as follows:

[0026] 100. Fan assembly; 200. Indoor air conditioning unit;

[0027] 10. Volute casing; 11. Fan blade; 13. Drive components; 14. Bearing components;

[0028] 101. First volute; 102. Second volute; 103. Third volute;

[0029] 111. First blade; 112. Second blade; 113. Third blade;

[0030] 131. Motor; 132. Motor shaft; 133. Fan shaft; 134. Coupling; 135. Snap ring;

[0031] 1321, First motor shaft; 1322, Second motor shaft;

[0032] 1331, First fan shaft; 1332, Second fan shaft;

[0033] 1340, Half coupling; 1341, Fixed through hole; 1342, Fixed countersunk hole; 1343, Bolt; 1344, First metal contact part; 1345, Second metal contact part; 1346, Rubber connecting part; 1347, First coupling; 1348, Second coupling;

[0034] 141. Bearing; 142. Support base; 143. Fixing cover; 145. Screw. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] In current air conditioner indoor unit designs using centrifugal fan blades, the motor typically has its own shaft, with the centrifugal fan blades fixed to this shaft. This design reduces the number of parts in the unit, simplifies the production process, and improves production efficiency. However, this ease of production does not equate to ease of after-sales maintenance. As the core power component of the air conditioner indoor unit, the motor is prone to failure during long-term operation. Repairing or replacing the motor requires first disassembling the volute in the fan assembly and removing the centrifugal fan blades from the motor shaft before the motor can be removed. This process places significant demands on maintenance space, especially for ceiling-mounted indoor units. Larger access panels are needed during installation, and the operation is not convenient for maintenance personnel working at heights, thus greatly increasing the difficulty of after-sales maintenance.

[0037] To address the aforementioned issues, this utility model proposes a fan assembly, an indoor air conditioning unit, and a duct-type air conditioner. The aim is to enable the motor to be independently disassembled and installed without disassembling the volute and fan blades, thereby making after-sales maintenance and motor replacement more convenient, reducing the workload of after-sales personnel, and minimizing the maintenance space required during the installation of the indoor air conditioning unit.

[0038] Please refer to the following: Figures 1 to 4 This utility model provides a fan assembly 100 for an indoor unit 200 of an air conditioner. The fan assembly 100 includes a volute 10, a fan blade 11 disposed inside the volute 10, and a drive component 13 for driving the fan blade 11 to rotate. The drive component 13 includes a motor 131, a fan shaft 133, and a coupling 134. The motor 131 is provided with a motor shaft 132, the fan shaft 133 passes through the shaft hole of the fan blade 11, and the coupling 134 is used to connect the motor shaft 132 and the fan shaft 133.

[0039] It should be understood that the fan blade 11 is driven by a fan shaft 133, which passes through the shaft hole of the fan blade 11. The coupling 134 tightly fixes the fan shaft 133 and the motor shaft 132 into a whole, ensuring that the fan shaft 133 and the motor shaft 132 are on the same axis as much as possible, and that the ends of the fan shaft 133 and the motor shaft 132 are in contact or have a suitable clearance. The torque of the motor 131 is effectively transmitted to the fan shaft 133 through the motor shaft 132 and the coupling 134, driving the fan blade 11 to rotate.

[0040] The fan assembly 100 proposed in this utility model has the following characteristics: the motor shaft 132 and the fan shaft 133 are independently set, and the two are connected and transmitted through a coupling 134. This design allows the motor 131 to be removed independently without disassembling the volute 10 and the fan blades 11 when the motor 131 needs to be repaired or replaced during engineering. This design not only facilitates the replacement process of the motor 131 during after-sales maintenance, but also effectively reduces the workload of after-sales personnel. At the same time, it helps to reduce the maintenance space required when installing the indoor unit 200 of the air conditioner, and improves the overall installation flexibility and convenience.

[0041] In some embodiments of this utility model, such as Figure 1 , Figure 4 As shown, the motor shaft 132 is provided with a snap ring 135 for positioning the coupling 134.

[0042] This invention also incorporates a retaining ring 135 added to the motor shaft 132. The purpose of this design is to use the retaining ring 135 to precisely position the coupling 134, ensuring the accurate installation position of the coupling 134. This design not only improves the accuracy of coupling 134 installation but also facilitates the assembly and disassembly of the coupling 134 by production and after-sales personnel.

[0043] In some embodiments of this utility model, such as Figure 4 As shown, the coupling 134 is divided into two half couplings 1340, which are detachably connected by fasteners. One half coupling 1340 is provided with a fixing through hole 1341 for fasteners to pass through, and the other half coupling 1340 is provided with a fixing countersunk hole 1342 for fasteners to pass through.

[0044] This utility model also employs a configuration of two half-couplings 1340 for the coupling 134. The two half-couplings 1340 are tightly connected together using fasteners, such as bolts 1343. One half-coupling 1340 has a fixing through hole 1341 for fasteners to pass through; the other half-coupling 1340 has a fixing countersunk hole 1342, also for fasteners to pass through, thus achieving a secure connection between the two half-couplings 1340. This design facilitates disassembly and assembly of the coupling 134 in the shaft diameter direction, improving its flexibility and convenience of use.

[0045] In an optional embodiment of this utility model, the half-coupling 1340 is made of metal.

[0046] The half-coupling 1340 of this invention can be made of metal, typically high-strength and wear-resistant metal, to ensure stability and durability in the transmission system. The metal material can be cast steel, alloy steel, stainless steel, etc., and the specific material selection should comprehensively consider the application environment, load requirements, and cost-effectiveness. The half-coupling 1340, made of metal, can effectively transmit the torque of the motor 131 to the fan shaft 133 through the motor shaft 132 and the coupling 134, thereby driving the fan blades 11 to rotate.

[0047] In another optional embodiment of this utility model, such as Figure 4 , Figure 5 As shown, the half coupling 1340 includes a first metal contact portion 1344 sleeved on the fan shaft 133, a second metal contact portion 1345 sleeved on the motor shaft 132, and a rubber connecting portion 1346 for connecting the first metal contact portion 1344 and the second metal contact portion 1345.

[0048] This invention further considers the characteristics of the all-metal clamping coupling 134, which is formed from a single metal material, creating a rigid connection between the motor shaft 132 and the fan shaft 133. However, when the other end of the fan shaft 133 has a different shaft from the end facing the motor shaft 132, this rigid connection can cause the fan blade 11 to run unevenly. To solve this problem, this invention also proposes a rubber-metal composite material coupling 134, which consists of a first metal contact part 1344, a second metal contact part 1345, and a rubber connecting part 1346. The parts of this coupling 134 that contact and are fixed to the two shafts are made of metal material to ensure the stability and strength of the connection; while the remaining parts are wrapped and filled with rubber material, forming an integral structure. When the other end of the fan shaft 133 has a different shaft from the end facing the motor shaft 132, the presence of a relatively soft rubber material between the two shafts allows the rubber to undergo slight deformation during operation, effectively eliminating the impact of the different shafts on the smoothness of operation. This design allows coupling 134 to maintain a certain level of rigidity while also possessing good flexibility and adaptability, effectively improving the operational stability and reliability of the equipment.

[0049] In a preferred embodiment of this utility model, such as Figures 2 to 4 As shown, the volute 10 includes a first volute 101, a second volute 102, and a third volute 103 spaced apart. The fan blade 11 includes a first fan blade 111 disposed inside the first volute 101, a second fan blade 112 disposed inside the second volute 102, and a third fan blade 113 disposed inside the third volute 103. The motor shaft 132 includes a first motor shaft 1321 and a second motor shaft 1322 disposed at both ends of the motor 131. The fan shaft 133 includes a first fan shaft 1331 passing through the shaft hole of the first fan blade 111 and a second fan shaft 1332 passing through the shaft holes of the second fan blade 112 and the third fan blade 113. The coupling 134 includes a first coupling 1347 for connecting the first motor shaft 1321 and the first fan shaft 1331, and a second coupling 1348 for connecting the second motor shaft 1322 and the second fan shaft 1332.

[0050] It should be understood that the number of volute 10 and fan blades 11 in the fan assembly 100 can be designed according to actual needs. Depending on the cooling capacity of the air conditioning unit, the number of volute 10 and fan blades 11 may be one, two, three, or more. However, the motor 131 is usually equipped with only one. The design of the motor 131 also varies depending on the number of fan blades 11, with one or both ends extending out of the motor shaft 132. Specifically, if the motor 131 is equipped with one fan blade 11, then usually only one end extends out of the motor shaft 132; if it is equipped with two or more fan blades 11, then both ends of the motor 131 will extend out of the motor shaft 132.

[0051] In the fan assembly 100 proposed in this utility model, the motor 131 has a first motor shaft 1321 and a second motor shaft 1322 extending from both ends. The first fan shaft 1331 is inserted into the shaft hole of the first fan blade 111, while the second fan shaft 1332 is inserted into the insertion holes of the second fan blade 112 and the third fan blade 113. To achieve efficient power transmission, a first coupling 1347 is used to securely connect the first motor shaft 1321 and the first fan shaft 1331, while a second coupling 1348 securely connects the second motor shaft 1322 and the second fan shaft 1332. This design enables one motor 131 to simultaneously drive three fan blades 11 to rotate synchronously.

[0052] In some embodiments of this utility model, such as Figure 3 , Figure 6 As shown, the end of the second fan shaft 1332 away from the second motor shaft 1322 is connected to the bearing component 14.

[0053] The present invention further considers that when one end of the motor 131 drives two or more fan blades 11, since the fan shaft 133 in the shaft hole of these fan blades 11 is relatively long, in order to improve the rigidity of the fan system and ensure the stability of the fan operation, a bearing component 14 can be added to the end of the fan shaft 133 opposite to the motor shaft 132.

[0054] It should be understood that, in practical applications, the relationship between the number of fan blades 11, the length of the fan shaft 133, and the requirements for bearing components 14 is as follows: When there is only one fan blade 11, the length of the fan shaft 133 is relatively short, and the rigidity is sufficient, so there is usually no need for additional bearing components 14. When there are two fan blades 11, the lengths of both fan shafts 133 are relatively short, and the rigidity is also sufficient, so there is also no need for additional bearing components 14. When there are three or more fan blades 11, the length of some or all of the fan shafts 133 is relatively long, and additional bearing components 14 are required to enhance stability. In addition, given that the motor 131 in this utility model can be disassembled separately, and the motor shaft 132 and the fan shaft 133 are independently set, in order to improve the overall stability of the system, bearing components 14 can be considered regardless of whether there are one or more fans.

[0055] In some embodiments of this utility model, such as Figures 6 to 8 As shown, the bearing component 14 includes a bearing 141 sleeved on the second fan shaft 1332, a support seat 142 for supporting the bearing 141, and a fixing cover 143 for fixing the bearing 141 to the support seat 142.

[0056] This utility model employs a bearing component 14 composed of three parts: a bearing 141, a support base 142, and a fixing cover 143. The support base 142 is designed to be relatively high to elevate the bearing 141, ensuring that the bearing 141 bore is at the same horizontal level as the fan shaft 133. The fixing cover 143 is securely mounted on the support base 142 using fasteners, such as two screws 145, effectively fixing the bearing 141 to the support base 142 and preventing the bearing 141 from falling off during use.

[0057] Please refer to the following: Figures 1 to 4 This utility model also proposes an air conditioner indoor unit 200, which includes a fan assembly 100. The specific structure of the fan assembly 100 has been described in detail above and will not be repeated here. The fan assembly 100 has the following characteristics: the motor shaft 132 and the fan shaft 133 are independently set, and are connected and transmitted through a coupling 134. This allows the motor 131 to be removed independently without disassembling the volute 10 and fan blades 11, simply by removing the coupling 134, when maintenance or replacement of the motor 131 is required. This not only simplifies the replacement process of the motor 131 during after-sales maintenance but also effectively reduces the workload of after-sales personnel. It also helps to reduce the maintenance space required for the installation of the air conditioner indoor unit 200, improving the overall installation flexibility and convenience. Therefore, the air conditioner indoor unit 200, with its unique fan assembly 100 design, brings users and after-sales personnel a more efficient and convenient experience in use and maintenance.

[0058] Please refer to the following: Figures 1 to 4 This utility model also proposes a ducted air conditioner, which mainly consists of an indoor unit 200 and an outdoor unit. The indoor unit 200 incorporates a unique fan assembly 100, in which the motor 131 can be independently disassembled and installed. This allows for separate disassembly and assembly of the motor 131 without disassembling the volute 10 and fan blades 11. This feature greatly facilitates after-sales maintenance and motor 131 replacement, effectively reducing the workload of after-sales personnel. Furthermore, because the motor 131 can be independently disassembled and installed, the maintenance space required for the indoor unit 200 during installation is correspondingly reduced, improving space utilization efficiency.

[0059] In the description of this utility model, it should be understood that, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0060] Furthermore, the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] Furthermore, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fan assembly for an indoor unit of an air conditioner, the fan assembly comprising a volute, fan blades disposed inside the volute, and a drive component for driving the fan blades to rotate, characterized in that, The drive component includes a motor, a fan shaft, and a coupling. The motor has a motor shaft, the fan shaft passes through the shaft hole of the fan blade, and the coupling is used to connect the motor shaft and the fan shaft.

2. The wind turbine assembly as described in claim 1, characterized in that, The motor shaft is equipped with a retaining ring for positioning the coupling.

3. The wind turbine assembly as described in claim 1, characterized in that, The coupling is divided into two half couplings, which are detachably connected by fasteners. One half coupling has a fixing through hole for the fastener to pass through, and the other half coupling has a fixing countersunk hole for the fastener to pass through.

4. The wind turbine assembly as described in claim 3, characterized in that, The half-coupling is made of metal.

5. The wind turbine assembly as described in claim 3, characterized in that, The half-coupling includes a first metal contact portion sleeved on the fan shaft, a second metal contact portion sleeved on the motor shaft, and a rubber connecting portion for connecting the first metal contact portion and the second metal contact portion.

6. The wind turbine assembly as described in any one of claims 1-5, characterized in that, The volute includes a first volute, a second volute, and a third volute spaced apart. The fan blades include a first fan blade disposed inside the first volute, a second fan blade disposed inside the second volute, and a third fan blade disposed inside the third volute. The motor shaft includes a first motor shaft and a second motor shaft disposed at both ends of the motor. The fan shaft includes a first fan shaft passing through the shaft hole of the first fan blade and a second fan shaft passing through the shaft holes of the second and third fan blades. The coupling includes a first coupling for connecting the first motor shaft and the first fan shaft, and a second coupling for connecting the second motor shaft and the second fan shaft.

7. The wind turbine assembly as described in claim 6, characterized in that, The end of the second fan blade shaft away from the second motor shaft is connected to the bearing component.

8. The wind turbine assembly as described in claim 7, characterized in that, The bearing component includes a bearing sleeved on the second fan blade shaft, a support seat for supporting the bearing, and a fixing cover for fixing the bearing on the support seat.

9. An indoor unit for an air conditioner, characterized in that, Includes the wind turbine assembly as described in any one of claims 1-8.

10. A ducted air conditioner, characterized in that, Including the air conditioner indoor unit as described in claim 9.

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