Motor mounting structure, motor, duct machine and design method of motor mounting structure

Abstract

The present invention discloses a motor mounting structure, a motor, an air duct machine, and a design method for a motor mounting structure, which relates to the field of air duct machines and solves the problem in the prior art that the connecting rod of the air duct machine motor vibration isolation system, which is located above the motor body, is a sheet metal integral part and cannot effectively reduce the vibration of the motor when the motor body vibrates. The motor mounting structure includes a motor bracket and a clamp portion, the motor bracket is used to support the motor body, the clamp portion includes a first clamp portion and a second clamp portion, the first clamp portion and the second clamp portion are respectively installed at both ends of the motor body and connected to the motor bracket, the first clamp portion and the second clamp portion are spaced apart from one end of the motor bracket and are connected by a first connecting member. During the vibration of the motor, this structure can apply a pulling force between the two ends of the clamp portion through the first connecting member, thereby effectively reducing the vibration displacement of the clamp portion, and further effectively reducing the upper and lower vibration amplitudes of the motor body, thereby achieving the effect of reducing the vibration of the motor body.

Description

Technical Field

[0001] The present invention relates to the technical field of ducted air conditioners, and in particular to a motor mounting structure, a motor, an ducted air conditioner and a design method of the motor mounting structure. Background Art

[0002] As the primary vibration source for ducted air conditioners, the motor's vibration reduction design is crucial, directly impacting the overall vibration and noise of the unit. Existing motor vibration isolation systems for ducted air conditioners in the industry have very similar structural designs, typically consisting of a motor bracket, vibration-damping rubber rings, clamps, and fan blades. When there are more than two fan blades, additional components such as couplings, motor connecting shafts, and bearing brackets are often required. Existing motor vibration isolation systems utilize a vibration-damping rubber ring placed at each end of the motor housing, leveraging its elasticity to achieve vibration reduction.

[0003] The applicant discovered that the structure of existing motor vibration isolation systems generally results in a natural frequency of around 20 Hz for the entire system, making it highly susceptible to falling within the motor's rotational frequency range, posing a risk of resonance. Specifically, the speed of the AC asynchronous motor or DC brushless motor commonly used in ducted air conditioners is below 1300 rpm, corresponding to a motor rotational frequency below 22 Hz. The natural frequency of the vibration isolation system is generally around 20 Hz. When the motor excitation reaches a certain level, coupled with excessive imbalance due to improper assembly, this can easily excite the vibration isolation system to resonate, causing severe motor vibration, often manifested as excessive axial vibration that is far greater than tangential and radial vibration.

[0004] The applicant also found that the existing motor vibration isolation system has at least the following defects: (1) The clamp of the existing motor vibration isolation system is clamped on the motor bracket, and the structure of the clamp located above the motor body is an integrated structure, that is, the connecting rod of the clamp located above the motor body is an integral sheet metal part, which cannot effectively reduce the vibration of the motor when the motor body vibrates; (2) The vibration-damping rubber ring of the existing motor vibration isolation system has a groove in the circumferential direction, and the groove is clamped on the motor bracket to fix the vibration-damping rubber ring. This fixing method makes the contact area between the vibration-damping rubber ring and the motor bracket smaller, and the vibration-damping effect of the vibration-damping rubber ring is weaker.

[0005] The structure of the existing motor vibration isolation system causes the natural frequency of the vibration isolation system to easily fall within the motor rotation frequency range, which poses a risk of resonance. In addition, the structural defects of the existing motor vibration isolation system make the vibration reduction effect of the existing motor vibration isolation system not excellent, resulting in greater motor vibration.

[0006] The prior art discloses a motor bracket comprising a bracket body and two brackets extending from either side of the bracket body. The brackets are provided with a support portion and a clip. The support portion supports the motor's vibration damping ring. The motor bracket also includes a motor clamp comprising two clamps that engage with the clips to secure the vibration damping ring. The motor clamp also includes a connecting rod connected to the two clamps at both ends, and a retaining plate that abuts the end faces of the vibration damping ring from both axial sides of the motor. This motor bracket primarily prevents the motor's vibration damping ring from shifting or falling off due to vibration and other factors, but does not provide improved vibration damping performance.

[0007] Another prior art discloses a motor mounting assembly comprising a bracket having two support plates that support the ends of the motor's rotating shaft, respectively; and a mounting plate that connects the two support plates. The motor mounting assembly also includes a reinforcement member comprising a first reinforcement plate that overlaps the support plates along the axial direction of the rotating shaft; and a second reinforcement plate that connects the two support plates, or that, together with the first reinforcement plate, connects the two support plates. This motor mounting assembly is primarily used to prevent motor displacement or dislocation due to vibration, and does not provide improved vibration reduction.

[0008] Therefore, there is an urgent need to improve the installation structure of the motor of the air duct blower in the prior art. Summary of the Invention

[0009] One of the objectives of this invention is to provide a motor mounting structure that addresses the technical problem in existing ducted air conditioner motor vibration isolation systems, where the clamp is located above the motor body and the connecting rod is a single sheet metal component, failing to effectively reduce motor vibration when the motor body vibrates. The various technical benefits of this preferred technical solution are detailed below.

[0010] To achieve the above objectives, the present invention provides the following technical solutions:

[0011] The motor mounting structure of the present invention includes a motor bracket and a clamp portion, wherein the motor bracket is used to support the motor body, and the clamp portion includes a first clamp portion and a second clamp portion, the first clamp portion and the second clamp portion are respectively installed at both ends of the motor body and connected to the motor bracket, and the first clamp portion and the second clamp portion are spaced apart from one end of the motor bracket and are connected by a first connecting member.

[0012] According to a preferred embodiment, the first clamp portion and the second clamp portion each include a first clamp and a second clamp, the first clamp and the second clamp are respectively installed on both sides of the motor body, and the first clamp and the second clamp are connected by a second connecting member.

[0013] According to a preferred embodiment, the end of the second clamp away from the motor bracket is an inverted L-shaped structure, the second clamps of the first clamp part and the second clamp part are arranged opposite to each other, and the horizontal sides of the two inverted L-shaped structures are opposite to each other and spaced apart, and the horizontal sides of the two inverted L-shaped structures are connected by the first connecting member.

[0014] According to a preferred embodiment, the distance between the horizontal sides of the two inverted L-shaped structures is 5 to 15 mm.

[0015] According to a preferred embodiment, the motor mounting structure further includes a vibration-damping portion, which is sleeved on both ends of the motor body and fixed between the motor bracket and the clamp portion.

[0016] According to a preferred embodiment, the vibration damping part includes a first vibration damping part and a second vibration damping part, the diameter of the first vibration damping part is smaller than the diameter of the second vibration damping part, and the vibration damping part forms a boss structure, the motor bracket and the clamp part are clamped on the first vibration damping part, and the motor bracket and the clamp part are separated from the motor body by the second vibration damping part.

[0017] According to a preferred embodiment, the motor bracket includes a bracket body and a bracket, wherein the bracket is located on both sides of the bracket body, and buckles are provided on both sides of the bracket, and openings are provided on the first clamp part and the second clamp part, and the buckles are clamped in the openings.

[0018] According to a preferred embodiment, the bracket has an arc-shaped notch structure, and the arc-shaped notch of the bracket protrudes from the outer side surface of the bracket body to form a mounting portion at the arc-shaped notch of the bracket, and the mounting portion is used to install the first vibration damping portion and contact the surface of the first vibration damping portion.

[0019] According to a preferred embodiment, the width of the mounting portion is greater than the thickness of the first vibration-damping portion.

[0020] According to a preferred embodiment, a limit plate is further provided on the side of the bracket, the limit plate is located outside the mounting portion, and when the first vibration damping portion is installed on the mounting portion, the end face of the first vibration damping portion contacts the limit plate.

[0021] The motor mounting structure provided by the present invention has at least the following beneficial technical effects:

[0022] The present invention provides a motor mounting structure comprising a motor bracket and a clamp portion, wherein the motor bracket is used to support a motor body, and the clamp portion comprises a first clamp portion and a second clamp portion, the first clamp portion and the second clamp portion being respectively mounted at opposite ends of the motor body and connected to the motor bracket. The first clamp portion and the second clamp portion are spaced apart from one end of the motor bracket and connected by a first connecting member. Thus, the motor mounting structure of the present invention not only secures the motor body, but also, compared to prior art structures in which the clamp portion is located above the motor body and the connecting rod is formed as an integral sheet metal component, the first clamp portion and the second clamp portion are spaced apart from one end of the motor bracket and connected by a first connecting member. This allows the clamp portion located above the motor body to have a smaller rigidity at the ends and a larger rigidity in the middle. During motor vibration, the first connecting member can apply a tensile force between the ends of the clamp portion, thereby effectively reducing the vibration displacement of the clamp portion, thereby effectively reducing the vertical vibration amplitude of the motor body, thereby achieving the effect of reducing motor body vibration. Thus, the present invention solves the technical problem of prior art ducted air conditioner motor vibration isolation systems in which the clamp portion is located above the motor body and the connecting rod is formed as an integral sheet metal component, which cannot effectively reduce motor vibration when the motor body vibrates.

[0023] In addition, the preferred technical solution of the present invention also has the following beneficial technical effects:

[0024] In the preferred technical solution of the present invention, the arc-shaped notch of the bracket protrudes from the outer side surface of the bracket body so that a mounting portion is formed at the arc-shaped notch of the bracket. When installing the first vibration damping portion, the first vibration damping portion can be placed at the mounting portion to achieve the installation of the first vibration damping portion; on the other hand, the mounting portion contacts the side of the first vibration damping portion, which can increase the contact area between the bracket and the first vibration damping portion, not only ensuring the installation reliability of the first vibration damping portion, but also enhancing the vibration damping effect of the first vibration damping portion, further achieving the effect of reducing the vibration of the motor body, and solving the technical problem of the fixing method between the vibration damping rubber ring and the motor bracket of the existing motor vibration isolation system, which makes the contact area between the vibration damping rubber ring and the motor bracket smaller and the vibration damping effect of the vibration damping rubber ring weaker.

[0025] Another object of the present invention is to provide an electric motor.

[0026] The motor of the present invention comprises a motor body and a motor mounting structure, wherein the motor mounting structure is used to mount the motor body, and the motor mounting structure is the motor mounting structure described in any technical solution of the present invention.

[0027] The motor of the present invention includes the motor mounting structure described in any one of the technical solutions of the present invention. By mounting and fixing the motor body through the motor mounting structure, the vibration of the motor can be effectively reduced and the motor performance can be improved.

[0028] Another object of the present invention is to provide an air duct unit.

[0029] The air duct unit of the present invention comprises the motor described in any one of the technical solutions of the present invention.

[0030] The air duct unit of the present invention includes the motor described in any technical solution of the present invention. Since the motor vibration is reduced and the motor performance is improved, the performance and operation reliability of the air duct unit of the present invention can be improved.

[0031] Another object of the present invention is to provide a design method for the motor mounting mechanism described in any one of the technical solutions of the present invention.

[0032] The method for designing a motor mounting mechanism according to any one of the technical solutions of the present invention comprises the following steps:

[0033] An initial distance L0 between the first clamp portion and the second clamp portion is determined.

[0034] Different numbers of gaskets are added between the first clamp part and the second clamp part, and the vibration parameters of the motor body are tested after the first clamp part, the second clamp part and the gaskets are fixedly connected.

[0035] The vibration parameters of the motor body when different numbers of gaskets are added are compared, and the number of gaskets added that minimizes the vibration of the motor body is determined.

[0036] The distance between the first clamp portion and the second clamp portion is determined to be L1, and L1=L0-NT, wherein N is the number of additional gaskets to minimize vibration of the motor body, and T is the thickness of a single gasket.

[0037] The design method of the motor mounting mechanism described in any technical solution of the present invention can obtain the optimal structural parameters of the motor mounting mechanism during the design stage, specifically, obtain the optimal distance between the first clamp part and the second clamp part, which is conducive to controlling the motor vibration amount to the optimal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 is a schematic diagram of a preferred embodiment of the motor of the present invention;

[0040] Figure 2 is an exploded view of a preferred embodiment of the motor mounting structure of the present invention;

[0041] Figure 3is a schematic diagram of a preferred embodiment of the motor bracket of the present invention;

[0042] Figure 4 This is a flow chart of a design method for a preferred embodiment of a motor mounting structure of the present invention;

[0043] Figure 5 is a front view of the motor mounting structure of the present invention;

[0044] Figure 6 This is a comparison diagram of the vibration displacement harmonic response of the motor mounting structure of the present invention and the existing motor vibration isolation system.

[0045] In the figure: 11, motor bracket; 111, bracket body; 112, bracket; 1121, buckle; 1122, mounting portion; 1123, limit plate; 12, first clamping part; 121, first clamping member; 1211, opening; 122, second clamping member; 123, second connecting member; 13, second clamping part; 14, first connecting member; 15, vibration damping part; 151, first vibration damping part; 152, second vibration damping part; 20, motor body. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0047] The following is attached with the instruction manual Figures 1 to 6 And embodiments 1 to 4 describe in detail the motor mounting structure, the motor, the duct unit and the design method of the motor mounting structure of the present invention.

[0048] Example 1

[0049] This embodiment describes the motor mounting structure of the present invention in detail.

[0050] The motor mounting structure of this embodiment includes a motor bracket 11 and a clamp portion, such as Figure 1 and Figure 2 Preferably, the motor bracket 11 is used to support the motor body 20, and the clamp portion includes a first clamp portion 12 and a second clamp portion 13. The first clamp portion 12 and the second clamp portion 13 are respectively installed at both ends of the motor body 20 and connected to the motor bracket 11. The first clamp portion 12 and the second clamp portion 13 are spaced apart from one end of the motor bracket 11 and are connected by a first connector 14, as shown. Figure 1 and Figure 2As shown. The two ends of the motor body 20 mentioned in this embodiment can also be said to be the left and right ends of the motor body 20, such as Figure 1 and Figure 2 As shown. The first connecting member 14 can be a long bolt. In this embodiment, the first clamp portion 12 and the second clamp portion 13 are spaced apart from one end of the motor bracket 11. It can also be said that the first clamp portion 12 and the second clamp portion 13 are non-integrated structures. There is a spacing distance between the first clamp portion 12 and the second clamp portion 13 away from one end of the motor bracket 11, as shown. Figure 1 shown.

[0051] The motor mounting structure of this embodiment not only realizes the installation and fixation of the motor body 20, but also, compared to the prior art structure in which the connecting rod of the clamp located above the motor body 20 is an integral sheet metal part, the first clamp portion 12 and the second clamp portion 13 of this embodiment are spaced apart from one end of the motor bracket 11 and connected by a first connecting member, so that the rigidity of the structure in which the clamp portion is located above the motor body 20 is small at both ends and large in the middle. During the vibration of the motor, a pulling force can be applied between the two ends of the clamp portion by the first connecting member 14, thereby effectively reducing the vibration displacement of the clamp portion, and further effectively reducing the upper and lower vibration amplitudes of the motor body 20, thereby achieving the effect of reducing the vibration of the motor body 20. That is, the motor mounting structure of this embodiment solves the technical problem in the prior art that the connecting rod of the clamp located above the motor body 20 of the duct air conditioner motor vibration isolation system is an integral sheet metal part, which cannot effectively reduce the vibration of the motor when the motor body 20 vibrates.

[0052] According to a preferred embodiment, the first clamp portion 12 and the second clamp portion 13 each include a first clamp 121 and a second clamp 122, the first clamp 121 and the second clamp 122 are respectively installed on both sides of the motor body 20, and the first clamp 121 and the second clamp 122 are connected by a second connecting member 123, as shown in FIG. Figure 1 and Figure 2 As shown. Preferably, the first clamp 121 and the second clamp 122 are respectively provided with a second mounting hole, and the second connecting member 123 is installed in the second mounting hole to fix the first clamp 121 and the second clamp 122 together. The two sides of the motor body 20 mentioned in this embodiment can also be said to be the front and back sides of the motor body 20. Specifically, the first clamp 121 and the second clamp 122 of the first clamp portion 12 are respectively installed on the front and back sides of the left end of the motor body 20, and the first clamp 121 and the second clamp 122 of the second clamp portion 13 are respectively installed on the front and back sides of the right end of the motor body 20, as shown in FIG. Figure 1 and Figure 2As shown. The second connecting member 123 can be a long bolt. In the preferred technical solution of this embodiment, the first clamp portion 12 and the second clamp portion 13 both include a first clamp 121 and a second clamp 122. The first clamp 121 and the second clamp 122 are connected by the second connecting member 123, which can facilitate the installation and removal of the first clamp 121 and the second clamp 122.

[0053] According to a preferred embodiment, the end of the second clamp 122 away from the motor bracket 11 is an inverted L-shaped structure, the first clamp portion 12 and the second clamp portion 122 of the second clamp portion 13 are arranged opposite to each other, and the horizontal sides of the two inverted L-shaped structures are opposite to each other and spaced apart, and the horizontal sides of the two inverted L-shaped structures are connected by the first connecting member 14, such as Figure 1 and Figure 2 As shown. Preferably, the ends of the horizontal sides of the two inverted L-shaped structures are provided with a first mounting hole, and the first connecting member 14 is installed in the first mounting hole to fixedly connect the horizontal sides of the two inverted L-shaped structures. In the preferred technical solution of this embodiment, the horizontal sides of the inverted L-shaped structures of the first clamp portion 12 and the second clamp portion 13 are opposite to each other and spaced apart, and the horizontal sides of the two inverted L-shaped structures are connected by the first connecting member 14. The first connecting member 14 applies a pulling force between the two ends of the clamp portion, thereby effectively reducing the upper and lower amplitudes of the motor body 20, thereby achieving the effect of reducing the vibration of the motor body 20.

[0054] According to a preferred embodiment, the spacing between the horizontal sides of the two inverted L-shaped structures is 5 to 15 mm. The preferred technical solution of this embodiment is that the spacing between the horizontal sides of the two inverted L-shaped structures is 5 to 15 mm, which can effectively reduce the vibration of the motor body 20 and control the vibration amount of the motor body 20 to an optimal state.

[0055] According to a preferred embodiment, the motor mounting structure further includes a vibration reduction portion 15, which is sleeved on both ends of the motor body 20 and fixed between the motor bracket 11 and the clamp portion. Figure 1 and Figure 2 As shown. Preferably, the vibration damping portion 15 is made of rubber. The motor mounting structure of the preferred technical solution of this embodiment also includes a vibration damping portion 15. The vibration damping portion 15 is sleeved on both ends of the motor body 20 and fixed between the motor bracket 11 and the clamp portion. Through the action of the vibration damping portion 15, the vibration generated by the motor body 20 can be transmitted to the motor bracket 11 and the clamp portion, thereby effectively reducing the vibration generated by the motor body 20.

[0056] According to a preferred embodiment, the vibration damping portion 15 includes a first vibration damping portion 151 and a second vibration damping portion 152. The diameter of the first vibration damping portion 151 is smaller than the diameter of the second vibration damping portion 152, and the vibration damping portion 15 forms a boss structure. The motor bracket 11 and the clamp portion are clamped on the first vibration damping portion 151, and the motor bracket 11 and the clamp portion are separated from the motor body 20 by the second vibration damping portion 152. Figure 2 The vibration damping portion 15 of the preferred technical solution of this embodiment includes a first vibration damping portion 151 and a second vibration damping portion 152. The first vibration damping portion 151 can effectively reduce the vibration generated by the motor body 20, and the second vibration damping portion 152 can separate the motor bracket 11 and the clamp portion from the motor body 20, preventing the motor bracket 11 and the clamp portion from touching the motor body 20.

[0057] According to a preferred embodiment, the motor bracket 11 includes a bracket body 111 and a bracket 112. Figure 2 and Figure 3 Preferably, the bracket 112 is located on both sides of the bracket body 111, and buckles 1121 are provided on both sides of the bracket 112. The first clamp portion 12 and the second clamp portion 13 are provided with openings 1211, and the buckles 1121 are clamped in the openings 1211. Figure 2 and Figure 3 As shown. Preferably, the opening 1211 is a long hole. More preferably, the opening 1211 is a rectangular hole or an elliptical long hole. As shown in the figure, the bracket 112 includes two bracket parts, and the two bracket parts are respectively located on both sides of the bracket body 111. The front and rear sides of each bracket part are provided with a buckle 1121. After the motor body 20 is placed on the bracket 112, the first clamp part 12 and the second clamp part 13 are installed above the motor body 20, and the opening 1211 is clamped with the buckle 1121, so that the motor body 20 can be fixed between the motor bracket 11 and the clamp part.

[0058] Preferably, the bracket body 111 and the bracket 112 are integrally formed. Preferably, the bracket body 111 is provided with a third mounting hole, and the number of the third mounting holes is multiple. The motor bracket 11 can be fixed to the mounting plate of the unit by fixing members installed in the third mounting holes.

[0059] According to a preferred embodiment, the bracket 112 is an arc-shaped notch structure, and the arc-shaped notch of the bracket 112 protrudes from the outer side of the bracket body 111 so that a mounting portion 1122 is formed at the arc-shaped notch of the bracket 112. The mounting portion 1122 is used to mount the first vibration damping portion 151 and contact the surface of the first vibration damping portion 151. Figure 2 and Figure 3As shown. In the preferred technical solution of this embodiment, the arc-shaped notch of the bracket 112 protrudes from the outer side surface of the bracket body 111 so that a mounting portion 1122 is formed at the arc-shaped notch of the bracket 112. When installing the first vibration damper 151, the first vibration damper 151 can be placed on the mounting portion 1122 to achieve the installation of the first vibration damper 151. On the other hand, the mounting portion 1122 contacts the side surface of the first vibration damper 151, which can increase the contact area between the bracket 112 and the first vibration damper 151. This not only ensures the installation reliability of the first vibration damper 151, but also enhances the vibration damping effect of the first vibration damper 151, further achieving the effect of reducing the vibration of the motor body 20. This solves the technical problem that the fixing method between the vibration damping rubber ring and the motor bracket of the existing motor vibration isolation system is small in contact area with the motor bracket, resulting in a weak vibration damping effect of the vibration damping rubber ring.

[0060] According to a preferred embodiment, the width of the mounting portion 1122 is greater than the thickness of the first vibration damping portion 151. The preferred technical solution of this embodiment wherein the width of the mounting portion 1122 is greater than the thickness of the first vibration damping portion 151 not only ensures the installation reliability of the first vibration damping portion 151 but also ensures that the lower side surface of the first vibration damping portion 151 is in full contact with the bracket 112, thereby further enhancing the vibration damping effect of the first vibration damping portion 151.

[0061] like Figure 2 As shown, the width of the first clamping member 121 and the second clamping member 122 is not less than the thickness of the first vibration damping part 151, thereby not only ensuring the reliability of the clamping connection between the first clamping member 121 and the second clamping member 122 and the first vibration damping part 151, but also ensuring that the side surface above the first vibration damping part 151 is completely in contact with the first clamping member 121 and the second clamping member 122, thereby further enhancing the vibration damping effect of the first vibration damping part 151. According to a preferred embodiment, a limiting plate 1123 is further provided on the side surface of the bracket 112, and the limiting plate 1123 is located outside the mounting portion 1122, and when the first vibration damping part 151 is installed on the mounting portion 1122, the end surface of the first vibration damping part 151 is in contact with the limiting plate 1123, as shown in FIG. Figure 2 and Figure 3 As shown. Preferably, the limiting plate 1123 and the bracket 112 are an integrally formed structure. In the preferred embodiment of the present invention, a limiting plate 1123 is further provided on the side of the bracket 112. The blocking effect of the limiting plate 1123 not only prevents the first vibration damping part 151 from sliding out of the mounting part 1122 and causing the first vibration damping part 151 to fall off, but also prevents the end face of the first vibration damping part 151 (specifically, the end face of the first vibration damping part 151 in contact with the limiting plate 1123) from being deformed, thereby affecting the vibration damping effect of the first vibration damping part 151.

[0062] The assembly method of the motor mounting structure of this embodiment is as follows: First, connect the first clamp 121 and the second clamp 122 of the first clamp portion 12 (the second connecting member 123 does not need to be tightened); connect the first clamp 121 and the second clamp 122 of the second clamp portion 13 (the second connecting member 123 does not need to be tightened); connect the first clamp portion 12 and the second clamp portion 13 (the first connecting member 14 does not need to be tightened). Secondly, sleeve the vibration damping portion 15 on both ends of the motor body 20, and install the motor body 20 and the vibration damping portion 15 on the bracket 112 at the same time. Install the first clamp portion 12 and the second clamp portion 13 above the first vibration damping portion 151, and engage the buckle 1121 with the opening 1211. Finally, tighten the second connecting member 123, and then tighten the first connecting member 14.

[0063] The following simulation method is used to compare the vibration reduction effects of the motor mounting structure of this embodiment and the motor vibration isolation system in the prior art.

[0064] For a three-blade ducted air conditioner, the motor 20's speed range is 700-1200 rpm. The motor's main body 20 exhibits the most intense vibration at 950 rpm, manifesting as maximum axial vibration. The fixed frequency of conventional motor vibration isolation systems is measured at 16 Hz, indicating resonance with the motor 20 at this point. The motor 20 in this unit weighs approximately 3 kg, and a single blade weighs approximately 0.4 kg. The rubber ring has a hardness of 40-48 Shore A.

[0065] Using harmonic response simulation, the vibration displacement response of motor body 20 in this embodiment was compared with that of a conventional motor vibration isolation system. The vibration reduction effect of the motor mounting structure in this embodiment was verified by comparing the vibration displacement response of two models, one using the motor mounting structure in this embodiment and the other using a conventional motor vibration isolation system. The simulation settings for both models were identical: a torque of 50 Nm was applied at the center of mass of the motor housing, the frequency range was set to 10-22 Hz, and the global damping was set to 0.01. The vibration displacement response at the center fan blade mounting location on the motor shaft was examined.

[0066] The difference between the two models is that in the prior art, the structure of the clamp of the motor vibration isolation system located above the motor body 20 is an integral sheet metal part, while in this embodiment, the first clamp part 12 and the second clamp part 13 located above the motor body 20 are spaced apart from one end of the bracket body 111 and are connected by a first connecting part 14. In the non-stressed state, the horizontal spacing between the first clamp part 12 and the second clamp part 13 is 5 mm. After tightening, the end faces of the two long connecting rod bolt holes are connected, and the simulation is performed by applying a bolt pre-tightening force.

[0067] The simulation results are as follows Figure 6As shown, the maximum vibration of the motor vibration isolation system in the prior art occurs at 17 Hz, which is consistent with the tested vibration phenomenon; the maximum vibration frequency of the motor mounting structure of this embodiment is the same as that of the motor vibration isolation system in the prior art, but the vibration displacement is reduced by 25% (the vibration displacement of the motor vibration isolation system in the prior art is 2.37 mm, and the vibration displacement of the motor mounting structure of this embodiment is 1.77 mm). It can be seen that the vibration reduction effect of the motor mounting structure of this embodiment is better.

[0068] Example 2

[0069] This embodiment describes the motor of the present invention in detail.

[0070] The motor of this embodiment includes a motor body 20 and a motor mounting structure, such as Figure 1 Preferably, the motor mounting structure is used to mount the motor body 20, and the motor mounting structure is the motor mounting structure of any one of the technical solutions in Example 1. The structure of the motor body 20 can be the same as that of the prior art and will not be described in detail here.

[0071] The motor of this embodiment includes the motor mounting structure of any one of the technical solutions in Example 1. By installing and fixing the motor body through the motor mounting structure, the vibration of the motor can be effectively reduced and the motor performance can be improved.

[0072] Example 3

[0073] This embodiment describes the air duct unit of the present invention in detail.

[0074] The duct air conditioner of this embodiment includes the motor of any one of the technical solutions in Example 2. The remaining structure of the duct air conditioner can be the same as that of the prior art and will not be described in detail here.

[0075] The duct unit of this embodiment includes the motor of any one of the technical solutions in Example 2. Since the motor vibration is reduced and the motor performance is improved, the performance and operational reliability of the duct unit of this embodiment can be improved.

[0076] Example 4

[0077] This embodiment describes in detail the design method of the motor mounting structure of any technical solution in Example 1.

[0078] like Figure 4 As shown, the design method of the motor mounting structure of any technical solution in Example 1 includes the following steps:

[0079] S1: Determine the initial spacing L0 between the first clamp portion 12 and the second clamp portion 13. Specifically, when determining the initial spacing L0 between the first clamp portion 12 and the second clamp portion 13, L0 can be set slightly larger, for example, L0 is 10mm, 20mm or 30mm. Figure 5 shown.

[0080] S2: Add different numbers of gaskets between the first clamp portion 12 and the second clamp portion 13, and test the vibration parameters of the motor body 20 after fixing the first clamp portion 12, the second clamp portion 13 and the gasket. Specifically, add one gasket between the first clamp portion 12 and the second clamp portion 13, and test the vibration parameters of the motor body 20 after fixing the first clamp portion 12, the second clamp portion 13 and the added gasket. According to the above method, add 2, 3, ... N0 gaskets between the first clamp portion 12 and the second clamp portion 13 in sequence and test the vibration parameters of the motor body 20 after adding different numbers of gaskets. The vibration parameter is, for example, the vibration amplitude or the vibration frequency.

[0081] S3: Comparing the vibration parameters of the motor body 20 when different numbers of gaskets are added, and determining the number of gaskets that minimizes the vibration of the motor body 20. Specifically, the vibration parameters measured in step 2 are compared to select the number of gaskets that minimizes the vibration of the motor body 20.

[0082] S4: Determine the spacing L1 between the first clamp portion 12 and the second clamp portion 13, where L1 = L0 - NT, where N is the number of shims required to minimize vibration of the motor body 20, and T is the thickness of a single shim. Specifically, the spacing L1 between the first clamp portion 12 and the second clamp portion 13 is the optimal distance between the first clamp portion 12 and the second clamp portion 13, that is, the distance that minimizes motor vibration. The spacing L1 between the first clamp portion 12 and the second clamp portion 13 is preferably 5 to 15 mm.

[0083] The design method of the motor mounting mechanism of any technical solution in Example 1 can obtain the optimal structural parameters of the motor mounting mechanism during the design stage, specifically, the optimal distance between the first clamp part and the second clamp part, which is conducive to controlling the motor vibration amount to the optimal state.

[0084] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A motor mounting structure, characterized in that: The invention comprises a motor bracket (11) and a clamp portion, wherein the motor bracket (11) is used to support a motor body (20), the clamp portion comprises a first clamp portion (12) and a second clamp portion (13), the first clamp portion (12) and the second clamp portion (13) are respectively mounted on two ends of the motor body (20) and connected to the motor bracket (11), the first clamp portion (12) and the second clamp portion (13) are spaced apart from one end of the motor bracket (11) and are connected by a first connecting member (14), so that the rigidity of the structure of the clamp portion located above the motor body (20) is small at the two ends and large in the middle, and during the vibration of the motor, a pulling force is applied between the two ends of the clamp portion by the first connecting member (14) to reduce the vibration displacement of the clamp portion; The first clamping part (12) and the second clamping part (13) both include a second clamping member (122); the second clamping members (122) of the first clamping part (12) and the second clamping member (122) of the second clamping part (13) are arranged opposite to each other, and the horizontal sides of the two second clamping members (122) are connected by the first connecting member (14).

2. The motor mounting structure according to claim 1, characterized in that: The first clamp portion (12) and the second clamp portion (13) both include a first clamping member (121), the first clamping member (121) and the second clamping member (122) are respectively mounted on both sides of the motor body (20), and the first clamping member (121) and the second clamping member (122) are connected via a second connecting member (123).

3. The motor mounting structure according to claim 2, characterized in that: One end of the second clamping member (122) away from the motor bracket (11) is an inverted L-shaped structure, and the two horizontal sides of the inverted L-shaped structures are opposite to each other and spaced apart, and the horizontal sides of the two inverted L-shaped structures are connected by the first connecting member (14).

4. The motor mounting structure according to claim 3, characterized in that: The distance between the horizontal sides of the two inverted L-shaped structures is 5 to 15 mm.

5. The motor mounting structure according to claim 1, characterized in that: It also includes a vibration-damping part (15), which is sleeved on both ends of the motor body (20) and fixed between the motor bracket (11) and the clamp part.

6. The motor mounting structure according to claim 5, characterized in that: The vibration damping part (15) comprises a first vibration damping part (151) and a second vibration damping part (152); the diameter of the first vibration damping part (151) is smaller than the diameter of the second vibration damping part (152), and the vibration damping part (15) forms a boss structure; the motor bracket (11) and the clamp part are clamped on the first vibration damping part (151), and the motor bracket (11) and the clamp part are separated from the motor body (20) by the second vibration damping part (152).

7. The motor mounting structure according to any one of claims 1 to 6, characterized in that: The motor bracket (11) comprises a bracket body (111) and a bracket (112), wherein the bracket (112) is located on both sides of the bracket body (111), and buckles (1121) are provided on both sides of the bracket (112), and openings (1211) are provided on the first clamp portion (12) and the second clamp portion (13), and the buckles (1121) are clamped in the openings (1211).

8. The motor mounting structure according to claim 7, characterized in that: The bracket (112) has an arc-shaped notch structure, and the arc-shaped notch of the bracket (112) protrudes from the outer side surface of the bracket body (111) so that a mounting portion (1122) is formed at the arc-shaped notch of the bracket (112), and the mounting portion (1122) is used to mount the first vibration damping portion (151) and is in surface contact with the first vibration damping portion (151).

9. The motor mounting structure according to claim 8, characterized in that: The width of the mounting portion (1122) is greater than the thickness of the first vibration-damping portion (151).

10. The motor mounting structure according to claim 8, characterized in that: A limiting plate (1123) is further provided on the side of the bracket (112), the limiting plate (1123) being located outside the mounting portion (1122), and when the first vibration damping portion (151) is mounted on the mounting portion (1122), the end surface of the first vibration damping portion (151) contacts the limiting plate (1123).

11. A motor, characterized in that: The motor mounting structure comprises a motor body (20) and a motor mounting structure, wherein the motor mounting structure is used to mount the motor body (20), and the motor mounting structure is the motor mounting structure according to any one of the technical solutions in claims 1 to 10.

12. A ducted air conditioner, characterized in that: Including the motor according to claim 11.

13. The method for designing a motor mounting mechanism according to any one of claims 1 to 10, characterized in that: The steps include: Determining an initial distance L0 between the first clamp portion (12) and the second clamp portion (13); Different numbers of gaskets are added between the first clamp portion (12) and the second clamp portion (13), and the first clamp portion (12), the second clamp portion (13) and the gaskets are fixedly connected to test vibration parameters of the motor body (20); Comparing vibration parameters of the motor body (20) when different numbers of gaskets are added, and determining the number of gaskets added that minimizes the vibration of the motor body (20); The distance between the first clamp portion (12) and the second clamp portion (13) is determined to be L1, and L1=L0-NT, wherein N is the number of additional gaskets that minimizes vibration of the motor body (20), and T is the thickness of a single gasket.

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