Air blower assembly and air conditioning equipment

Abstract

The utility model relates to an air blower assembly and air conditioning equipment. The air blower assembly comprises a shaft part; the impeller assembly comprises a first impeller, a second impeller, a third impeller and a hub, the hub is arranged on the shaft part in a sleeving mode, the first impeller, the second impeller and the third impeller are sequentially arranged in the radial direction of the hub, and the shapes of the first impeller, the second impeller and the third impeller are different; and the driving structure is arranged on the shaft part in a sleeving mode and drives the shaft part to rotate, and the shaft part drives the impeller assembly to rotate. By arranging the first impeller, the second impeller and the third impeller which are different in shape, the total air volume can be increased, the air supply requirement is met, the first impeller, the second impeller and the third impeller are sequentially arranged in the radial direction of the hub, the internal space of the hub is fully utilized, the overall size of the impeller assembly or the rotating speed of the shaft part does not need to be increased, and cost is reduced. The device is not limited by the installation space, and is beneficial for realizing reasonable space layout.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a blower assembly and air conditioning equipment. Background Art

[0002] With the popularization of automobiles and the expansion of the market, users have higher and higher requirements for the comfort of the entire vehicle, and the automobile air-conditioning system is one of the factors to judge the user's riding comfort.

[0003] The blower assembly is driven by a permanent magnet DC motor, which has the advantages of low vibration, low noise, low cost, and high degree of automation, and is widely used in automotive air-conditioning systems.

[0004] As the market enters a relatively saturated state, the performance requirements for the blower assembly are getting higher and higher. The blower assembly in the related technology has the problem of low air supply efficiency. If a larger air volume is required, it is necessary to increase the speed or increase the size of the entire blower assembly. However, if the speed is increased, the noise of the blower assembly will increase, and if the size of the blower is increased, a larger installation space will be required, which is not conducive to achieving a reasonable space layout. Utility Model Content

[0005] The present application provides a blower assembly and air-conditioning equipment, which can increase the air volume without increasing the size of the blower assembly or the rotation speed, thereby effectively improving the overall performance of the blower assembly.

[0006] In a first aspect, the present application provides a blower assembly, comprising:

[0007] Shaft;

[0008] An impeller assembly, comprising a first impeller, a second impeller, a third impeller and a hub, wherein the hub is sleeved on the shaft, the first impeller, the second impeller and the third impeller are sequentially arranged along the radial direction of the hub, and the first impeller, the second impeller and the third impeller have different shapes; and

[0009] The driving structure is sleeved on the shaft and drives the shaft to rotate, and the shaft drives the impeller assembly to rotate.

[0010] In a possible implementation, the first impeller includes a plurality of first guide vanes, which are arranged in a surrounding manner and connected to the inner wall side of the hub;

[0011] The second impeller comprises a plurality of second guide vanes, which are arranged in a surrounding manner and connected to the inner bottom wall of the hub; wherein the second guide vane has a first end and a second end;

[0012] The third impeller includes a plurality of third guide vanes, which surround the shaft portion and are connected to the hub;

[0013] Along the radial direction of the hub, the second guide vane and the first guide vane, as well as the second guide vane and the third guide vane are staggered, the first end of the second guide vane is arranged opposite to a gap formed between two adjacent first guide vanes, and the second end of the second guide vane is arranged opposite to a gap formed between two adjacent third guide vanes.

[0014] In a possible implementation, the second guide plate includes a first curved segment and a second curved segment, and a curved direction of the first curved segment and a curved direction of the second curved segment are opposite to each other.

[0015] In a possible implementation, the first guide vane is sloped along the axial direction of the shaft portion, and a slope point height of the first guide vane located on one side of the hub is greater than a slope point height of the first guide vane located on one side of the shaft portion.

[0016] In a possible implementation, the third guide vane, the second guide vane and the first guide vane are sequentially arranged in a stepped manner along the axial direction of the shaft portion, the height of the third guide vane is greater than the height of the second guide vane, and the height of the second guide vane is greater than the height of the slope point of the first guide vane on one side of the shaft portion.

[0017] In a possible implementation, the impeller assembly further includes a fourth impeller, and the fourth impeller is disposed on a side of the hub away from the first impeller;

[0018] Wherein, the fourth impeller includes a plurality of fourth guide vanes, and the plurality of fourth guide vanes are arranged in a surrounding manner and connected to the hub.

[0019] In a possible implementation, the hub includes a ring body, a support body and a connecting body, the ring body is connected to the support body through the first impeller, the connecting body is connected to the support body, and the connecting body is sleeved on the radial outer side wall of the shaft portion;

[0020] The support body gradually decreases along the axial direction of the shaft portion from the bottom of the hub to the top of the hub, so that the hub is in a conical shape.

[0021] In a possible implementation, the driving structure includes a housing, a heat sink, a bearing, a mounting seat and a driving member;

[0022] The heat sink is sleeved on the shaft through the bearing, the driving member is arranged on the circumferential outer wall of the heat sink, the housing cover is arranged on the driving member and connected to the shaft; wherein a gap is arranged between the housing and the impeller assembly, and a plurality of ventilation holes are arranged on the top surface of the housing;

[0023] The mounting seat is provided with an accommodating space, and the mounting seat surrounds at least a part of the structure of the housing through the accommodating space;

[0024] The mounting seat is provided with air ducts respectively connected to the accommodating space and the outside. When the driving member is driven, wind pressure is generated, so that the airflow flows from the air duct to the ventilation hole and flows out through the gap formed between the casing and the impeller assembly.

[0025] In a possible implementation, the mounting base includes a mounting plate and a rear cover, the air duct is formed on the rear cover and / or the mounting plate, and the mounting plate is buckled to the rear cover to close the air duct; wherein the mounting plate is provided with an air flow inlet communicating with the air duct;

[0026] The rear cover is provided with a groove, the mounting plate is provided with a through opening corresponding to the groove, and the groove and the through opening together constitute the accommodating space.

[0027] In a possible implementation, the heat sink includes a heat sink plate and a heat sink ring column, the heat sink ring column is connected to the heat sink plate, the heat sink ring column is sleeved on the shaft portion through the bearing member, and there is a gap between the heat sink ring column and the shaft portion;

[0028] Wherein, the heat dissipation ring column is provided with a plurality of first air outlet holes and air inlet holes along its circumference.

[0029] In a possible implementation, a first limiting portion is provided on the radial outer side wall of the heat dissipation ring column, and the heat dissipation ring column is connected to the driving member in a limiting manner via the first limiting portion.

[0030] In a possible implementation, the heat sink further includes a shock absorbing portion, and the shock absorbing portion is sandwiched between the heat sink plate and the mounting seat.

[0031] In a possible implementation, the heat sink further includes a heat dissipation wind wheel, which is sleeved on the shaft portion and located between the heat dissipation ring column and the shaft portion;

[0032] Wherein, the heat dissipation wind wheel is arranged to rotate synchronously with the shaft.

[0033] In a possible implementation, the driving member is provided with a second air outlet hole along a radial direction, and the second air outlet hole is provided corresponding to the first air outlet hole;

[0034] When the heat dissipation fan wheel rotates with the shaft portion, the airflow between the heat dissipation ring column and the shaft portion is driven to flow toward the first air outlet hole, and then flows through the second air outlet hole into the housing.

[0035] In a possible implementation, the driving member includes a stator core, a first insulating sleeve, a second insulating sleeve, a plurality of magnetic tiles, and a plurality of windings;

[0036] The first insulating sleeve and the second insulating sleeve are respectively arranged on both sides of the stator core along the axial direction of the shaft portion and connected to the stator core;

[0037] The stator core comprises a core body and a plurality of core branches, wherein the plurality of core branches are evenly distributed along the circumference of the core body;

[0038] The winding is mounted on the corresponding iron core support, the magnetic tile is arranged on the housing, and the magnetic tile is arranged corresponding to the winding;

[0039] Wherein, the core body is provided with a plurality of the second air outlet holes, and each of the second air outlet holes is located between two adjacent core branches.

[0040] In a possible implementation, a second limiting portion is provided on the radial inner side wall of the core body, and the driving member is connected to the heat sink in a limiting manner via the second limiting portion.

[0041] In a possible implementation, the driving structure further includes a circuit board, a connection seat and a terminal, the circuit board is disposed in the accommodating space and is electrically connected to one end of the terminal, and the other end of the terminal extends into the connection seat.

[0042] In a second aspect, the present application provides an air conditioning device, comprising a blower assembly as described in the first aspect of the embodiment.

[0043] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0044] The blower assembly and air-conditioning equipment provided in the embodiments of the present application can increase the total air volume and meet the air supply demand by setting the first impeller, the second impeller and the third impeller of different shapes, and the first impeller, the second impeller and the third impeller are arranged in sequence along the radial direction of the hub, so as to make full use of the internal space of the hub, without increasing the overall volume of the impeller assembly or the rotation speed of the shaft, and is not limited by the installation space, which is conducive to realizing a reasonable space setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0048] Figure 1 A structural schematic diagram of a blower assembly provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the structure of an impeller assembly provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the structure of an impeller assembly provided in an embodiment of the present application;

[0051] Figure 4 A schematic diagram of the structure of a housing provided in an embodiment of the present application;

[0052] Figure 5 A schematic diagram of the structure of a housing provided in an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the structure of a heat sink provided in an embodiment of the present application;

[0054] Figure 7 A schematic diagram of the structure of the shaft portion provided in an embodiment of the present application;

[0055] Figure 8 An exploded schematic diagram of a mounting base provided in an embodiment of the present application;

[0056] Fig. 9 A schematic diagram of the structure of a driving member provided in an embodiment of the present application;

[0057] Fig.10 An exploded schematic diagram of a driving member provided in an embodiment of the present application;

[0058] Fig.11 A top view of a blower assembly provided in an embodiment of the present application;

[0059] Fig.12 for Fig.11 A schematic cross-sectional view of AA is shown.

[0060] Description of reference numerals:

[0061] 1. Shaft;

[0062] 2. Driving structure; 21. Casing; 211. Through hole; 212. Annular baffle; 213. Ventilation hole; 22. Heat sink; 221. Heat sink; 222. Heat sink ring column; 2221. Mounting groove; 2222. First air outlet; 2223. Air inlet; 2224. First limiting part; 223. Heat sink fan wheel; 224. Shock absorbing part; 23. Bearing part; 231. First bearing; 232. Second bearing; 24. Mounting seat; 241. Mounting plate; 2411, air flow inlet; 2412, through port; 242, back cover; 2421, groove; 243, air duct; 244, screw; 25, driving member; 251, stator core; 2511, core body; 2512, core support; 2513, second air outlet; 2514, second limiting portion; 252, first insulating sleeve; 253, magnetic tile; 254, winding; 255, second insulating sleeve; 26, circuit board; 27, connector; 28, terminal;

[0063] 3. Impeller assembly; 31. First impeller; 311. First guide vane; 32. Second impeller; 321. Second guide vane; 3211. First curved section; 3212. Second curved section; 3213. First end; 3214. Second end; 33. Third impeller; 331. Third guide vane; 34. Hub; 341. Ring body; 342. Support body; 343. Connecting body; 344. Reinforcing rib; 35. Fourth impeller; 351. Fourth guide vane. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0065] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0066] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0067] In some exemplary embodiments, Figure 1-Figure 3 , Fig.11 , Fig.12 As shown, a blower assembly can be applied to air-conditioning equipment, and the air-conditioning equipment can be installed in automobiles and other equipment to meet the cooling or air supply needs of automobiles and other equipment.

[0068] The blower assembly includes a shaft 1, a drive structure 2 and an impeller assembly 3. The shaft 1 is rotatably arranged in the blower assembly to facilitate the driving function. The drive structure 2 is sleeved on the shaft 1 and can drive the shaft 1 to rotate to achieve the driving effect of the shaft 1, drive the impeller assembly 3 to rotate, and realize air supply.

[0069] The impeller assembly 3 includes a first impeller 31, a second impeller 32, a third impeller 33 and a hub 34. The hub 34 is sleeved on the shaft 1. The first impeller 31, the second impeller 32 and the third impeller 33 are arranged in sequence along the radial direction of the hub 34. The shapes of the first impeller 31, the second impeller 32 and the third impeller 33 are all different to achieve different air supply angles and meet different air supply requirements. The first impeller 31, the second impeller 32 and the third impeller 33 are arranged in a stepwise manner along the radial direction to increase the air supply volume and meet the air supply requirements. Compared with the blower assembly in the related art, the present application does not need to increase the size of the blower assembly or the rotation speed of the shaft 1 to achieve a larger air supply volume and improve the user experience.

[0070] It should be noted that the radial direction of the hub 34 in this application can refer to Figure 1The D axis is shown, but the D axis does not mean that the hub 34 has only one radial direction. The D axis in the diagram is only a schematic representation of the direction from outside to inside or from inside to outside, and does not constitute a limitation to the present application.

[0071] In some exemplary embodiments, Figure 2 , Fig.12 As shown, the first impeller 31 includes a plurality of first guide vanes 311, which are arranged in a surrounding manner and connected to the inner wall side of the hub 34. The first impeller 31 can be integrally formed with the hub 34 by injection molding, for example, to improve the reliability of the connection. The first guide vane 311 is, for example, arc-shaped, so that it can minimize air resistance and reduce the impact on the rotation of the shaft 1, thereby facilitating the increase of the rotation speed.

[0072] The first guide plate 311 extends in the axial direction of the shaft portion (refer to Figure 1 The cross section of the first guide vane 311 on the side of the hub 34 is sloped, and the slope point height of the first guide vane 311 on the side of the shaft 1 is greater than the slope point height of the first guide vane 311 on the side of the shaft 1 to reduce wind resistance.

[0073] The second impeller 32 includes a plurality of second guide vanes 321, which are arranged in a surrounding manner and connected to the inner bottom wall of the hub 34. The density of the second guide vanes 321 is less than that of the first guide vanes 311, and the first guide vanes 311 can be used as the main wind guide, and the first guide vanes 311 are arranged closely to ensure the demand for air volume, while the second guide vanes 321 can be used as auxiliary wind guides to improve the wind guide efficiency.

[0074] The shape of the second guide vane 321 is different from that of the first guide vane 311 to meet the needs of different wind guide angles. Exemplarily, the second guide vane 321 includes a first curved segment 3211 and a second curved segment 3212, and the bending direction of the first curved segment 3211 and the bending direction of the second curved segment 3212 are oppositely arranged. The shape of the second guide vane 321 forms an S shape, so that the first curved segment 3211 and the second curved segment 3212 are tangent to each other, thereby improving the air supply capacity, so that it has a larger air output without increasing the size of the impeller assembly 3 and the rotation speed of the impeller assembly 3 is the same, thereby improving the air supply efficiency.

[0075] The third impeller 33 includes a plurality of third guide vanes 331, which surround the shaft portion 1 and are connected to the hub 34. It is understandable that the second impeller 32 and the third impeller 33 can be integrally formed with the hub 34 by injection molding in the same manner as the first impeller 31, so as to simplify the assembly process and improve the reliability of the connection.

[0076] The third guide vane 331 is, for example, C-shaped, which can increase the air volume and improve air flow. The third guide vane 331 can be loosely arranged to assist the first guide vane 311 and the second guide vane 321 to achieve air supply. By utilizing the internal space of the hub 34, the air supply efficiency and space utilization can be improved without increasing the size of the blower assembly.

[0077] The second guide vane 321 has a first end 3213 and a second end 3214. Along the radial direction of the hub, the second guide vane 321 and the first guide vane 311 are staggered, that is, the first end 3213 of the second guide vane 321 is arranged opposite to the gap formed between two adjacent first guide vanes 311, so as to ensure that wind can be guided at different positions.

[0078] Here, it should be noted that it is not necessary for all gaps between adjacent first guide vanes 311 to correspond to a second guide vane 321. The second guide vanes 321 can be arranged according to actual air supply requirements. It is possible to select gaps formed between several adjacent first guide vanes 311 to correspond to a second guide vane 321, and the specific situation shall prevail.

[0079] The second guide vanes 321 and the third guide vanes 331 are staggered, that is, the second end 3214 of the second guide vane 321 is arranged relative to the gap formed between two adjacent third guide vanes 331, so as to ensure that wind can be guided at different positions. The staggered arrangement of the first guide vane 311, the second guide vane 321 and the third guide vane 331 can improve the air supply effect and increase the air supply volume.

[0080] Here, it should be noted that the arrangement between the second guide plate 321 and the third guide plate 331 may be different from the arrangement between the first guide plate 311 and the second guide plate 321. Since the third guide plates 331 are arranged relatively sparsely, it may be that one second guide plate 321 corresponds to the gap formed between two adjacent third guide plates 331, or it may be that two second guide plates 321 correspond to the gap formed between two adjacent third guide plates 331, which shall be subject to the actual situation.

[0081] The heights of the third guide vane 331, the second guide vane 321 and the first guide vane 311 are arranged in a stepped manner along the axial direction of the shaft. For example, the height of the third guide vane 331 is greater than the height of the second guide vane 321, and the height of the second guide vane 321 is greater than the height of the slope point of the first guide vane 311 located on one side of the shaft 1. The third guide vane 331, the second guide vane 321 and the first guide vane 311 are in a staggered state, thereby achieving wind guiding at different heights of the third guide vane 331, the second guide vane 321 and the first guide vane 311 to improve the wind guiding effect.

[0082] The third guide vane 331 , the second guide vane 321 and the first guide vane 311 are staggered and arranged in different heights, so as to ensure that the space of the hub 34 is fully utilized, increase the air supply volume, improve the air supply effect, and meet the air supply demand.

[0083] Here, it should be noted that, for the convenience of explanation and understanding, the descriptions of height, top, bottom or side in this application are based on the placement of the blower assembly in the figure, and are exemplary descriptions of the orientation, and do not constitute a limitation to this application. In actual application, the blower assembly can be placed flat as shown in the figure, or it can be placed on its side, which is subject to the actual situation.

[0084] In this embodiment, if Figure 3 , Fig.12 As shown, the impeller assembly 3 further includes a fourth impeller 35, which is arranged on the side of the hub 34 away from the first impeller 31, that is, the side close to the driving structure 2. The fourth impeller 35 includes a plurality of fourth guide vanes 351, each of which is, for example, arc-shaped, which can reduce wind resistance, and the plurality of fourth guide vanes 351 are arranged in a surrounding manner and are fixedly connected to the outer bottom wall of the hub 34. When the impeller assembly 3 rotates, the fourth impeller 35 can drive the air below to flow, thereby taking away the heat on the driving structure 2 and improving the heat dissipation effect.

[0085] In this embodiment, if Figure 2 , Figure 3 , Fig.12 As shown, the hub 34 includes a ring body 341, a support body 342 and a connector 343. The ring body 341 is sleeved on the outside of the first guide vane 311 in the first impeller 31 and is fixedly connected to the first guide vane 311 to limit the movement of the first guide vane 311. The ring body 341 is arranged close to the upper side of the first guide vane 311, which can provide support for the first guide vane 311, so as to prevent the first guide vane 311 from breaking or deflecting due to excessive wind pressure when guiding wind, and ensure that the wind guiding angle will not deviate.

[0086] The first guide vane 311 is connected to the support body 342 at the bottom, and the connecting body 343 is fixedly connected to the support body 342 to provide lower support and fixation for the first guide vane 311. The connecting body 343 is located at the center of the hub 34, and the connecting body 343 is sleeved on the radial outer wall of the shaft portion 1 to surround the shaft portion 1, thereby increasing the contact area between the hub 34 and the shaft portion 1 and improving the reliability of the connection.

[0087] The connector 343 can extend along the axial direction of the shaft 1, that is, penetrate the support body 342 and extend to the bottom of the support body 342, further increasing the contact area with the shaft 1 to ensure the reliability of the connection. In order to improve the structural strength of the connector 343 and prevent the connector 343 from being damaged when the shaft 1 rotates, a reinforcing rib 344 can be provided on the connector 343. The reinforcing rib 344 is provided on the side of the support body 342 close to the drive structure 2 and is fixedly connected to the circumferential outer side wall of the connector 343, effectively enhancing the local structural strength of the connector 343 and the support body 342, and extending the service life of the impeller assembly 3.

[0088] The support body 342 gradually decreases from the bottom of the hub 34 to the top of the hub 34 along the axial direction of the shaft 1, so that the hub 34 is conical, avoiding the driving structure 2 below and avoiding collision with the driving structure 2. The different heights of the bottom surface of the hub 34 are conducive to achieving the staggered heights between the first guide vane 311, the third guide vane 331 and the second guide vane 321, and the conical hub 34 is also conducive to enhancing the exchange of the airflow inside the impeller with the airflow outside the impeller assembly 3, thereby improving the air supply efficiency.

[0089] In some exemplary embodiments, Figure 1-Figure 12 As shown, the driving structure 2 includes a housing 21 , a heat sink 22 , a bearing 23 , a mounting seat 24 and a driving member 25 .

[0090] The heat sink 22 is sleeved on the shaft portion 1 through a bearing member 23, wherein, in order to achieve stability during connection, the bearing member 23 may include, for example, a first bearing 231 and a second bearing 232. The first bearing 231 and the second bearing 232 are arranged on both sides of the heat sink 22 along the axial direction of the shaft portion 1 to balance the stability of the heat sink 22.

[0091] Some examples include Figure 6 , Fig.12 As shown, the heat sink 22 includes, for example, a heat sink plate 221 and a heat sink ring column 222, the heat sink ring column 222 is fixedly connected to the heat sink plate 221, and the heat sink ring column 222 is sleeved on the shaft portion 1 through the first bearing 231 and the second bearing 232 of the bearing member 23. Among them, the two ends of the heat sink ring column 222 are provided with mounting grooves 2221 to facilitate the limited installation of the first bearing 231 and the second bearing 232. It can be understood that the first bearing 231 and the second bearing 232 can be, for example, ball bearings, etc., which shall be based on actual conditions, as long as the rotational connection between the heat sink ring column 222 and the shaft portion 1 can be achieved.

[0092] There is a gap between the heat dissipation ring column 222 and the shaft 1 to avoid affecting the rotation of the shaft 1, and can also achieve self-heating to avoid excessive heat generated by mechanical energy when the shaft 1 rotates, thereby affecting the performance of the blower assembly.

[0093] The heat dissipation ring column 222 is provided with a plurality of first air outlet holes 2222 along its circumference, which can realize the airflow flowing along the radial direction of the heat dissipation ring column 222. The heat dissipation ring column 222 is also provided with a plurality of air inlet holes 2223 along its circumference, and the air inlet holes 2223 and the first air outlet holes 2222 are provided at different positions along the axial direction of the shaft portion 1. For example, the first air outlet hole 2222 is located in the middle of the heat dissipation ring column 222, and the upper and lower parts of the heat dissipation ring column 222 are provided with air inlet holes 2223 along the axial direction of the shaft portion 1, so as to form an upper air inlet hole 2223 and a lower air inlet hole 2223.

[0094] In other examples, such as Figure 6 , Figure 7 , Fig.12 As shown, the heat sink 22 includes, for example, a heat sink plate 221, a heat sink ring column 222 and a heat sink wind wheel 223. The heat sink plate 221 and the heat sink ring column 222 are arranged in the same manner as in the above example, and will not be repeated here.

[0095] The heat dissipation fan wheel 223 is sleeved on the shaft 1 and is located between the heat dissipation ring column 222 and the shaft 1. The heat dissipation fan wheel 223 is configured to rotate synchronously with the shaft 1. The heat dissipation fan wheel 223 can drive the airflow in the gap between the heat dissipation ring column 222 and the shaft 1 to ensure that the airflow can enter the first air outlet 2222 to achieve heat dissipation. Adding a heat dissipation fan wheel 223 to drive the airflow can further improve the heat dissipation effect, achieve rapid heat dissipation, and improve the performance of the blower assembly.

[0096] The heat dissipation fan wheel 223 is made of plastic material, such as polypropylene (PP for short). The heat dissipation fan wheel 223 has strong toughness to prevent damage. The heat dissipation fan wheel 223 and the shaft 1 are interference fit. When assembling, the heat dissipation fan wheel 223 is first pressed into the installation position on the shaft 1, and then the heat dissipation fan wheel 223 and the shaft 1 are placed into the heat dissipation element 22. Among them, the blades of the heat dissipation fan wheel 223 are soft and deformable, so they will not be damaged during installation and can be smoothly installed to the heat dissipation element 22.

[0097] In this embodiment, if Figure 6 , Fig.12 As shown, the radial outer side wall of the heat dissipation ring column 222 may also be provided with a first limiting portion 2224, and the heat dissipation ring column 222 is connected to the driving member 25 through the first limiting portion 2224 to achieve rapid assembly and avoid misalignment.

[0098] In this embodiment, if Figure 6 , Fig.12As shown, the heat sink 22 may further include a shock absorbing portion 224, which is sandwiched between the heat sink 221 and the mounting seat 24 to prevent the blower assembly from vibrating too much during operation. The shock absorbing portion 224 is, for example, a shock absorbing rubber pad, so that the shock absorbing portion 224 has good shock absorption, sound insulation and buffering performance. The shock absorbing portion 224 is, for example, in a U shape, so that the heat sink 221 is sandwiched in the U opening, and the shock absorbing portion 224 is fixedly connected to the mounting seat 24 to limit the shock absorbing portion 224.

[0099] In this embodiment, if Figure 4 , Figure 5 , Fig. 9 , Fig.10 , Fig.12 As shown, the driving member 25 is arranged on the circumferential outer wall of the heat sink 22, and the housing 21 is covered on the driving member 25 and connected to the shaft 1 so as to move with the shaft 1. Among them, the middle part of the housing 21 has a through hole 211 to facilitate the shaft 1 to pass through, and an annular baffle 212 can be arranged at the through hole 211, and the annular baffle 212 can increase the connection area between the housing 21 and the shaft 1 and improve the reliability of the connection. The housing 21 and the impeller assembly 3 are arranged with a gap, and a plurality of ventilation holes 213 are arranged on the top surface of the housing 21, and the plurality of ventilation holes 213 are arranged in a surrounding manner.

[0100] The mounting seat 24 is provided with an accommodating space, and the mounting seat 24 surrounds at least a portion of the structure of the casing 21 through the accommodating space. At least a portion of the casing 21, at least a portion of the heat sink 22, and at least a portion of the driving member 25 are all arranged in the accommodating space to protect components such as the heat sink 22 and the driving member 25 to avoid exposure and damage to their components.

[0101] The mounting base 24 is provided with an air duct 243 connected to the accommodating space and the outside respectively. When the driving member 25 is driven, wind pressure is generated, so that the air flow enters the casing 21 through the air duct 243, flows to the ventilation hole 213, and flows out through the gap formed between the casing 21 and the impeller assembly 3, thereby achieving cooling and heat dissipation, improving the temperature rise problem of the blower assembly, and avoiding its excessive temperature, which affects the performance of the blower assembly.

[0102] Some examples include Figure 8 , Fig.12 As shown, the mounting base 24 includes a mounting plate 241 and a rear cover 242. The air duct 243 can be formed on the mounting plate 241 or on the rear cover 242. The mounting plate 241 is buckled to the rear cover 242 to close the air duct 243. The mounting plate 241 is provided with an air flow inlet 2411 communicating with the air duct 243 to ensure the patency between the air duct 243 and the outside of the blower assembly.

[0103] The rear cover 242 is provided with a groove 2421 , and the mounting plate 241 is provided with a through opening 2412 corresponding to the groove 2421 . The groove 2421 and the through opening 2412 together constitute an accommodating space for facilitating the installation or avoiding other components of the blower assembly.

[0104] Here, it should be noted that the mounting plate 241 and the rear cover 242 in the mounting seat 24 have structures, which will not be described in detail here. In addition to the air duct 243, the groove 2421 and the through-port 2412, it also has other structures to achieve avoidance or installation, etc. For example, the mounting seat 24 is also provided with screw holes, and the mounting plate 241 and the rear cover 242 are connected together by screws 244 to improve the reliability of the connection. Alternatively, the mounting seat 24 is also provided with protrusions, etc., so as to facilitate the installation of the blower assembly into the air conditioning equipment, which shall be subject to the actual situation.

[0105] In this embodiment, if Figure 6 , Fig.10 , Fig.12 As shown, the driving member 25 is provided with a second air outlet hole 2513 along the radial direction, and the second air outlet hole 2513 and the first air outlet hole 2222 are correspondingly arranged and connected to ensure the smoothness of the air flow channel.

[0106] When the heat dissipation fan wheel 223 rotates with the shaft portion 1, the airflow between the heat dissipation ring column 222 and the shaft portion 1 is driven to flow to the second air outlet 2513, and flows through the first air outlet 2222 to the housing 21. Specifically, when the heat dissipation fan wheel 223 moves, wind pressure is formed, driving the airflow between the heat dissipation ring column 222 and the shaft portion 1 to flow to the first air outlet 2222, and flows through the second air outlet 2513 to reach the gap between the housing 21 and the driving member 25. Among them, when the heat dissipation fan wheel 223 drives the airflow between the heat dissipation ring column 222 and the shaft portion 1, the airflow flows out, and a negative pressure state is formed inside, so that the airflow can enter between the heat dissipation ring column 222 and the shaft portion 1 through the upper air inlet hole 2223 or the lower air inlet hole 2223, forming a circulating airflow, improving the heat dissipation efficiency, meeting the heat dissipation requirements, and effectively improving the temperature rise of the driving structure 2.

[0107] In this embodiment, if Fig. 9 , Fig.10 , Fig.12 As shown, the driving member 25 includes, for example, a stator core 251 , a first insulating sleeve 252 , a second insulating sleeve 255 , a plurality of magnetic tiles 253 and a plurality of windings 254 .

[0108] The stator core 251 includes a core body 2511 and a plurality of core branches 2512 , and the plurality of core branches 2512 are evenly distributed along the circumference of the core body 2511 . The windings 254 are coil windings, for example, and the windings 254 are mounted on the corresponding core branches 2512 .

[0109] The first insulating sleeve 252 and the second insulating sleeve 255 are disposed on both sides of the core support 2512 along the axial direction of the shaft portion 1 . The first insulating sleeve 252 and the second insulating sleeve 255 cover the core body 2511 to achieve effective isolation.

[0110] The magnetic shoe 253 is disposed on the housing 21 , and the magnetic shoe 253 and the winding 254 are disposed one by one. When power is turned on, a rotating magnetic field is excited between the stator core 251 , the magnetic shoe 253 , and the winding 254 , thereby driving the shaft 1 to rotate.

[0111] The core body 2511 is provided with a plurality of second air outlet holes 2513 , each of which is located between two adjacent core branches 2512 , and the core branches 2512 and the second air outlet holes 2513 are staggered to ensure that the second air outlet holes 2513 correspond to and are connected with the first air outlet holes 2222 .

[0112] The radial inner wall of the core body 2511 can also be provided with a second limiting portion 2514, and the core body 2511 is connected to the first limiting portion 2224 of the heat dissipation ring column 222 through the second limiting portion 2514, so as to realize the quick matching installation of the heat dissipation element 22 and the driving element 25, and improve the assembly efficiency. The first limiting portion 2224 and the second limiting portion 2514 are connected to ensure that the second air outlet 2513 and the first air outlet 2222 are installed in a aligned manner, and misalignment is avoided, and the air flow cannot be smooth. Among them, the second limiting portion 2514, for example, includes a plurality of limiting protrusions, and the plurality of limiting protrusions are arranged along the circumference of the core body 2511, and the first limiting portion 2224, for example, includes a plurality of limiting grooves, and the plurality of limiting grooves are arranged along the circumference of the heat dissipation ring column 222, and the limiting protrusions and the limiting grooves are arranged in a one-to-one corresponding plug-in manner.

[0113] In this embodiment, if Fig.12 As shown, the driving structure 2 further includes a circuit board 26, a connection seat 27 and a terminal 28. The circuit board 26 is disposed in the accommodation space and is electrically connected to one end of the terminal 28. The other end of the terminal 28 extends into the connection seat 27. The connection seat 27 is plugged into an external power supply device to achieve electrical connection with the terminal 28. Among them, the circuit board 26 is integrated with circuits and other structures to facilitate driving or control functions.

[0114] The present application also provides an air-conditioning device, including a blower assembly as in any of the above embodiments, to meet the air supply function of the air-conditioning device, and the blower assembly has the advantages of low vibration, low noise, low cost, and high degree of automation.

[0115] The impeller assembly in the blower assembly fully utilizes the internal space of the hub and can deliver a large amount of air without increasing the overall size or rotation speed.

[0116] The addition of a heat dissipation fan wheel can improve the temperature rise of the drive structure, reduce the temperature of the circuit board, drive components and other structures, and improve the overall performance of the drive structure. In addition, in conjunction with the first air outlet, the second air outlet and the air inlet, an annular airflow is achieved, effectively improving the heat dissipation capacity.

[0117] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0118] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0119] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A blower assembly, characterized in that: include: Shaft; An impeller assembly, comprising a first impeller, a second impeller, a third impeller and a hub, wherein the hub is sleeved on the shaft, the first impeller, the second impeller and the third impeller are sequentially arranged along the radial direction of the hub, and the first impeller, the second impeller and the third impeller have different shapes; and The driving structure is sleeved on the shaft and drives the shaft to rotate, and the shaft drives the impeller assembly to rotate.

2. The blower assembly according to claim 1, characterized in that: The first impeller includes a plurality of first guide vanes, which are arranged in a surrounding manner and connected to the inner wall side of the hub; The second impeller comprises a plurality of second guide vanes, which are arranged in a surrounding manner and connected to the inner bottom wall of the hub; wherein the second guide vane has a first end and a second end; The third impeller includes a plurality of third guide vanes, which surround the shaft portion and are connected to the hub; Along the radial direction of the hub, the second guide vane and the first guide vane, as well as the second guide vane and the third guide vane are staggered, the first end of the second guide vane is arranged opposite to a gap formed between two adjacent first guide vanes, and the second end of the second guide vane is arranged opposite to a gap formed between two adjacent third guide vanes.

3. The blower assembly according to claim 2, characterized in that: The second guide plate includes a first curved segment and a second curved segment, and a curved direction of the first curved segment and a curved direction of the second curved segment are opposite to each other.

4. The blower assembly according to claim 2, characterized in that: The first guide vane is sloped along the axial direction of the shaft portion, and a slope point height of the first guide vane located on one side of the hub is greater than a slope point height of the first guide vane located on one side of the shaft portion.

5. The blower assembly according to claim 4, characterized in that: The third guide vane, the second guide vane and the first guide vane are sequentially arranged in a stepped manner along the axial direction of the shaft portion, the height of the third guide vane is greater than the height of the second guide vane, and the height of the second guide vane is greater than the height of the slope point of the first guide vane on one side of the shaft portion.

6. The blower assembly according to claim 1, characterized in that: The impeller assembly further includes a fourth impeller, wherein the fourth impeller is disposed on a side of the hub away from the first impeller; Wherein, the fourth impeller includes a plurality of fourth guide vanes, and the plurality of fourth guide vanes are arranged in a surrounding manner and connected to the hub.

7. The blower assembly according to claim 1, characterized in that: The hub comprises a ring body, a support body and a connecting body, wherein the ring body is connected to the support body through the first impeller, the connecting body is connected to the support body, and the connecting body is sleeved on the radial outer side wall of the shaft portion; The support body gradually decreases along the axial direction of the shaft portion from the bottom of the hub to the top of the hub, so that the hub is in a conical shape.

8. The blower assembly according to claim 1, characterized in that: The driving structure comprises a housing, a heat sink, a bearing, a mounting seat and a driving member; The heat sink is sleeved on the shaft through the bearing, the driving member is arranged on the circumferential outer wall of the heat sink, the housing cover is arranged on the driving member and connected to the shaft; wherein a gap is arranged between the housing and the impeller assembly, and a plurality of ventilation holes are arranged on the top surface of the housing; The mounting seat is provided with an accommodating space, and the mounting seat surrounds at least a part of the structure of the housing through the accommodating space; The mounting seat is provided with air ducts respectively connected to the accommodating space and the outside. When the driving member is driven, wind pressure is generated, so that the airflow flows from the air duct to the ventilation hole and flows out through the gap formed between the casing and the impeller assembly.

9. The blower assembly according to claim 8, characterized in that: The mounting base includes a mounting plate and a rear cover, the air duct is formed on the rear cover and / or the mounting plate, and the mounting plate is buckled to the rear cover to close the air duct; wherein the mounting plate is provided with an air flow inlet communicating with the air duct; The rear cover is provided with a groove, the mounting plate is provided with a through opening corresponding to the groove, and the groove and the through opening together constitute the accommodating space.

10. The blower assembly according to claim 8, characterized in that: The heat sink comprises a heat sink plate and a heat sink ring column, the heat sink ring column is connected to the heat sink plate, the heat sink ring column is sleeved on the shaft portion through the bearing member, and there is a gap between the heat sink ring column and the shaft portion; Wherein, the heat dissipation ring column is provided with a plurality of first air outlet holes and air inlet holes along its circumference.

11. The blower assembly according to claim 10, characterized in that: A first limiting portion is provided on the radial outer side wall of the heat dissipation ring column, and the heat dissipation ring column is connected to the driving member through the first limiting portion.

12. The blower assembly according to claim 10, characterized in that: The heat sink also includes a shock absorbing portion, which is sandwiched between the heat sink plate and the mounting seat.

13. The blower assembly according to claim 10, characterized in that: The heat sink also includes a heat dissipation fan wheel, which is sleeved on the shaft portion and located between the heat dissipation ring column and the shaft portion; Wherein, the heat dissipation wind wheel is arranged to rotate synchronously with the shaft.

14. The blower assembly according to claim 13, characterized in that: The driving member is provided with a second air outlet hole along the radial direction, and the second air outlet hole is provided correspondingly to the first air outlet hole; When the heat dissipation fan wheel rotates with the shaft portion, the airflow between the heat dissipation ring column and the shaft portion is driven to flow toward the first air outlet hole, and then flows through the second air outlet hole into the housing.

15. The blower assembly according to claim 14, characterized in that: The driving member comprises a stator core, a first insulating sleeve, a second insulating sleeve, a plurality of magnetic tiles and a plurality of windings; The first insulating sleeve and the second insulating sleeve are respectively arranged on both sides of the stator core along the axial direction of the shaft portion and connected to the stator core; The stator core comprises a core body and a plurality of core branches, wherein the plurality of core branches are evenly distributed along the circumference of the core body; The winding is mounted on the corresponding iron core support, the magnetic tile is arranged on the housing, and the magnetic tile is arranged corresponding to the winding; Wherein, the core body is provided with a plurality of the second air outlet holes, and each of the second air outlet holes is located between two adjacent core branches.

16. The blower assembly according to claim 15, characterized in that: The radial inner side wall of the core body is provided with a second limiting portion, and the driving member is connected to the heat sink by the second limiting portion.

17. The blower assembly according to claim 8, characterized in that: The driving structure further includes a circuit board, a connection seat and a terminal. The circuit board is arranged in the accommodating space and is electrically connected to one end of the terminal. The other end of the terminal extends into the connection seat.

18. An air conditioning device, characterized in that: Comprising a blower assembly as described in any one of claims 1-17.

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