Fan, electrical device, volute assembly and household appliance

Abstract

Provided in the present application are a fan, an electrical device, a volute assembly and a household appliance. The fan comprises: a first housing, wherein a ventilation opening is provided in the first housing, and an electric motor mounting cavity is provided inside the first housing; a second housing which is connected to the first housing, wherein the interior of the first housing is in communication with the interior of the second housing through the ventilation opening; an impeller which is arranged inside the first housing; a first diffuser which is arranged inside the first housing, and comprises a plurality of first flow guide channels, the plurality of first flow guide channels being arranged around the impeller; a second diffuser which is arranged inside the first housing and comprises a second flow guide channel, the second flow guide channel being in communication with the electric motor mounting cavity; an electric motor structure which is arranged in the electric motor mounting cavity; and a rotating shaft which is arranged on the electric motor structure and is connected to the impeller. The first flow guide channels are in communication with the ventilation opening and the second flow guide channel.

Description

Fans, electrical equipment, volute components and household appliances

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on March 28, 2024, with application number "202420616167.X" and application name "Fan and electrical equipment"; and the priority of the Chinese patent application filed with the China Patent Office on May 31, 2024, with application number "202410703293.3" and application name "Volcane assembly and household appliance", all of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of fans, and in particular to a fan, an electrical device, a volute assembly, and a household appliance. Background Art

[0003] Fans, which rely on mechanical energy to increase gas pressure and deliver it, are widely used in household appliances. Currently, high vacuum levels and strong suction are typically achieved by increasing the fan's speed. However, the fan's motor has poor heat dissipation, which affects its power output, and the resulting heat can reduce its efficiency.

[0004] A volute fan in related technology consists of a volute, a motor, and an impeller. The impeller rotates to generate airflow, which is then expanded and discharged through the volute. The motor is housed within the volute, typically shielded from the external airflow, reducing its heat dissipation efficiency and, in turn, affecting its performance. Summary of the Invention

[0005] The present application aims to at least solve or improve the technical problem of poor heat dissipation effect of the motor structure of the fan in the prior art.

[0006] To this end, a first aspect of the present application provides a wind turbine.

[0007] A second aspect of the present application provides an electrical device.

[0008] A third aspect of the present application provides a volute assembly.

[0009] A fourth aspect of the present application provides a household appliance.

[0010] In view of this, according to the first aspect of the present application, the present application provides a fan, including: a first shell, a vent is provided on the first shell, and a motor mounting cavity is provided inside the first shell; a second shell is connected to the first shell, and the interior of the first shell and the interior of the second shell are connected through the vent; an impeller is arranged inside the first shell; a first diffuser is arranged inside the first shell, the first diffuser includes a plurality of first guide channels, and the plurality of first guide channels are arranged around the impeller; a second diffuser is arranged inside the first shell, the second diffuser includes a second guide channel, and the second guide channel is connected to the motor mounting cavity; a motor structure is arranged in the motor mounting cavity; a rotating shaft is arranged in the motor structure and connected to the impeller; wherein the first guide channel is connected to the vent and the second guide channel.

[0011] The fan provided in the present application includes: a first shell, a second shell, a first diffuser, a second diffuser, an impeller, a motor structure and a rotating shaft. A vent is provided on the first shell, a motor mounting cavity is provided inside the first shell, the motor structure is arranged in the motor mounting cavity, the first diffuser and the second diffuser are arranged inside the first shell, and the first diffuser is arranged on the side of the motor structure away from the second diffuser, the first diffuser is provided with a first guide channel, the second diffuser is provided with a second guide channel, the first guide channel is connected to the vent and the second guide channel, the second guide channel is also connected to the motor mounting cavity, the vent is also connected to the interior of the second shell, the rotating shaft is provided on the motor structure, the motor structure can drive the rotating shaft to rotate, the rotating shaft is connected to the impeller, and multiple first guide channels are arranged around the impeller.

[0012] The motor structure can drive the rotating shaft to rotate, and the rotating shaft drives the impeller to rotate, thereby generating airflow. The airflow is discharged through the first guide channel located on the periphery of the impeller. Then, part of the airflow enters the interior of the second shell through the air vent and is finally discharged. The other part of the airflow enters the motor mounting cavity through the second guide channel, thereby cooling the motor structure, thereby improving the heat dissipation effect of the motor structure, improving the efficiency of the motor structure, and improving the exhaust effect of the fan.

[0013] Furthermore, the double diffusion performed by the first diffuser and the second diffuser can increase the velocity of the airflow and improve the heat dissipation effect.

[0014] In addition, the fan in the above technical solution provided by this application may also have the following additional technical features:

[0015] In some embodiments, optionally, the first diffuser and the second diffuser are an integrated structure.

[0016] In some embodiments, optionally, the first diffuser includes: a partition, arranged inside the first shell, with the edge of the partition spaced apart from the first shell; a plurality of first blades, arranged on the side of the partition away from the motor structure, and a first guide channel formed between adjacent first blades; the second diffuser includes: a plurality of second blades, arranged on the side of the partition away from the first blades, and a second guide channel formed between adjacent second blades.

[0017] In some embodiments, optionally, the number of the first blades is the same as the number of the second blades, and one end of the first blade facing away from the rotating shaft is aligned with one end of the second blade facing away from the rotating shaft.

[0018] In some embodiments, optionally, the first shell includes: a first body; a second body located on one side of the first body, the motor mounting cavity is arranged on the second body, and a vent is formed between the first body and the second body; wherein the second shell is connected to the first body and the second body.

[0019] In some embodiments, optionally, the second body includes: a barrel portion, the motor mounting cavity is arranged in the barrel portion; a first edge, arranged on the barrel portion, the second diffuser and the first edge are abutted against each other; a second edge, arranged on the side of the first edge away from the barrel portion, a vent is formed between the second edge and the first body, and the second shell is connected to the second edge.

[0020] In some embodiments, optionally, the first guiding channel and the second guiding channel are distributed in a cross manner.

[0021] In some embodiments, optionally, the second shell is a volute, the second shell is arranged around the first shell, and the first guide channel and the vent are opposite to each other.

[0022] In some embodiments, optionally, the first diffuser is a radial diffuser; and the second diffuser is a radial diffuser.

[0023] According to a second aspect of the present application, the present application provides an electrical device, including: a fan provided in the embodiment of the first aspect.

[0024] According to the third aspect of the present application, the present application provides a volute assembly, comprising: a volute body, comprising a first end and a second end arranged opposite to each other, the first end being protruded with a mounting portion; a motor assembly, comprising a motor and an impeller, the motor being at least partially mounted on the mounting portion, and the impeller being arranged in the volute body; wherein the volute body is a first heat conductor, the mounting portion is a second heat conductor, the heat generated by the motor is conducted to the first heat conductor by the second heat conductor, and the heat is transported to the outside of the volute body through the airflow generated by the rotation of the impeller.

[0025] Wherein, the first heat conducting member and / or the second heat conducting member include metal members.

[0026] Wherein, a heat conducting layer is provided between the mounting portion and the motor.

[0027] The volute assembly includes a fixing bracket, which locks the motor to the mounting portion.

[0028] Among them, the fixing bracket is provided with a first fixing hole, the outer periphery of the motor is provided with a first arc-shaped groove, the inner side wall of the mounting part is provided with a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are arranged to form a mounting hole, and the first fixing part is used to lock the motor to the mounting part through the first fixing hole and the mounting hole.

[0029] The fixing bracket is provided with a second fixing hole, and the second fixing piece passes through the second fixing hole for installing the electric control board.

[0030] Wherein, the fixing bracket is the third heat conducting member.

[0031] A second fixing portion is provided on a side of the fixing bracket facing the motor, and the motor is at least partially installed in the second fixing portion.

[0032] The volute body includes a first volute body and a second volute body, the first volute body and the second volute body are detachably connected, the mounting portion is arranged on the surface of the first volute body away from the second volute body, and the first volute body is a first heat conductor.

[0033] According to a fourth aspect of the present application, the present application provides a household appliance comprising the volute assembly described above.

[0034] The volute assembly of the present application includes a volute body and a motor assembly. The volute body includes a first end and a second end that are arranged opposite to each other. A mounting portion is protruding from the first end. The motor assembly includes a motor and a moving impeller. The motor is at least partially mounted on the mounting portion, and the moving impeller is arranged in the volute body. Among them, the volute body is a first heat conductor, and the mounting portion is a second heat conductor. The heat generated by the motor is transferred from the second heat conductor to the first heat conductor, and the heat is transported to the outside of the volute body by the airflow generated by the rotation of the moving impeller. Due to the combined effect of the volute body being the first heat conductor and the mounting portion being the second heat conductor, the heat generated by the motor can be transferred to the volute body. The airflow and the surface of the volute body conduct heat away from the volute body, which can dissipate heat from the motor and thereby improve the performance of the motor. Compared with the existing volute assembly, the volute assembly in this embodiment can improve the motor power on the basis of improving the performance of the motor by transferring the heat of the motor to the volute body, so as to meet the vacuum degree, large suction and other requirements of the volute assembly, thereby improving the overall reliability of the volute assembly. In addition, the impeller can also dissipate heat from the motor, thereby improving the performance of the motor and the overall reliability of the volute assembly.

[0035] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] FIG1 shows a schematic structural diagram of a fan provided by an embodiment of the present application;

[0038] FIG2 shows a cross-sectional view of a fan provided by one embodiment of the present application;

[0039] FIG3 shows a cross-sectional view of a fan provided by one embodiment of the present application;

[0040] FIG4 shows a schematic structural diagram of a first diffuser and a second diffuser in a wind turbine provided by an embodiment of the present application;

[0041] FIG5 shows a schematic structural diagram of a first diffuser and a second diffuser in a wind turbine provided by an embodiment of the present application;

[0042] FIG6 shows a schematic structural diagram of an embodiment of a volute assembly of the present application;

[0043] FIG7 shows a schematic structural diagram of C shown in FIG6 ;

[0044] FIG8 shows an exploded schematic diagram of an embodiment of a volute assembly of the present application;

[0045] FIG9 shows a schematic structural diagram of D shown in FIG8 ;

[0046] FIG10 shows a cross-sectional schematic diagram of an embodiment of a volute assembly of the present application;

[0047] FIG11 shows a partial schematic diagram of an embodiment of a volute assembly of the present application;

[0048] FIG12 shows a schematic structural diagram of a fixing bracket in a volute assembly of the present application;

[0049] FIG13 shows a simplified structural diagram of an embodiment of a household appliance of the present application;

[0050] FIG. 14 shows an exploded view of an embodiment of a volute assembly of the present application.

[0051] 1 to 14 , the corresponding relationship between the reference numerals and the component names is as follows: 100 fan, 110 first housing, 112 vent, 114 motor mounting cavity, 116 first body, 118 second body, 120 barrel, 122 first edge, 124 second edge, 126 second housing, 130 first diffuser, 132 partition, 134 first blade, 136 first guide channel, 140 impeller, 150 motor structure, 160 rotating shaft, 170 second diffuser, 172 second blade, 174 second guide channel, 20 volute assembly, 21 volute body, 21a first end, 21b second end, 2 11 First volute casing, 212 Second volute casing, 213 Mounting portion, 2131 Second arcuate groove, 2132 Mounting hole, 22 Motor assembly, 221 Motor, 2211 First winding bracket, 2212 Second winding bracket, 2213 Motor stator fixing bracket, 22131 First arcuate groove, 22132 Positioning groove, 222 Impeller, 23 Fixing bracket, 231 First fixing portion, 2311 First fixing hole, 232 Lug portion, 2321 Second fixing hole, 233 Second fixing portion, 240 First fixing part, 200 Household appliance. DETAILED DESCRIPTION

[0052] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0054] The following describes a fan, an electrical device, a volute assembly, and a household appliance provided according to some embodiments of the present application with reference to Figures 1 to 14.

[0055] The arrows in FIG3 indicate the direction of air flow.

[0056] As shown in Figures 1, 2 and 3, according to the first aspect of the present application, the present application provides a fan 100, which includes: a first shell 110, a second shell 126, a first diffuser 130, a second diffuser 170, an impeller 140, a motor structure 150 and a rotating shaft 160.

[0057] The first housing 110 is provided with a vent 112. A motor mounting cavity 114 is provided inside the first housing 110. The motor structure 150 is disposed in the motor mounting cavity 114. The second housing 126 is connected to the first housing 110. The interior of the first housing 110 and the interior of the second housing 126 are connected through the vent 112. After the airflow enters the interior of the second housing 126, it can be discharged to realize the air outlet of the fan 100. The first diffuser 130 and the second diffuser 170 are both disposed inside the first housing 110. The first diffuser 130 is provided with a first guide channel 136. The second diffuser 170 is provided with a second guide channel 174. The first guide channel 136 and the second guide channel 174 are connected. The first guide channel 136 is also connected to the interior of the second housing 126 through the vent 112. The second guide channel 174 is also connected to the motor mounting cavity 114. The rotating shaft 160 is disposed on the motor structure 150, and the impeller 140 is disposed on the rotating shaft 160.

[0058] The motor structure 150 can drive the rotating shaft 160 to rotate, and the rotating shaft 160 can drive the impeller 140 to rotate, thereby generating airflow. The airflow is discharged through the first guide channel 136, and part of the airflow enters the interior of the second shell 126 through the air vent, and the other part of the airflow enters the motor mounting cavity 114 through the second guide channel 174.

[0059] The fan 100 provided in the present application includes: a first housing 110, a second housing 126, a first diffuser 130, a second diffuser 170, an impeller 140, a motor structure 150 and a rotating shaft 160. The first housing 110 is provided with a vent 112, the interior of the first housing 110 is provided with a motor mounting cavity 114, the motor structure 150 is disposed in the motor mounting cavity 114, the first diffuser 130 and the second diffuser 170 are disposed inside the first housing 110, and the first diffuser 130 is disposed on a side of the motor structure 150 away from the second diffuser 170. On the side, the first diffuser 130 is provided with a first guide channel 136, and the second diffuser 170 is provided with a second guide channel 174. The first guide channel 136 is connected to the vent 112 and the second guide channel 174. The second guide channel 174 is also connected to the motor mounting cavity 114. The vent 112 is also connected to the interior of the second shell 126. The rotating shaft 160 is provided on the motor structure 150. The motor structure 150 can drive the rotating shaft 160 to rotate. The rotating shaft 160 is connected to the impeller 140. Multiple first guide channels 136 are arranged around the impeller 140.

[0060] The motor structure 150 can drive the rotating shaft 160 to rotate, and the rotating shaft 160 drives the impeller 140 to rotate, thereby generating airflow. The airflow is discharged through the first guide channel 136 located on the side of the impeller 140. Then, part of the airflow enters the interior of the second shell 126 through the air vent and is finally discharged. The other part of the airflow enters the motor mounting cavity 114 through the second guide channel 174, thereby cooling the motor structure 150, thereby improving the heat dissipation effect of the motor structure 150, improving the efficiency of the motor structure 150, and improving the exhaust effect of the fan 100.

[0061] Furthermore, the double diffusion performed by the first diffuser 130 and the second diffuser 170 can increase the flow velocity of the airflow and improve the heat dissipation effect.

[0062] That is, the impeller 140 drives the airflow through the first diffuser 130 for primary diffusion, part of the airflow enters the boost chamber for secondary boosting, and the other part is secondary boosted through the second diffuser 170, thereby making the fan 100 have the characteristics of high vacuum, strong suction, high efficiency and low noise.

[0063] As shown in FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , in some embodiments, optionally, the first diffuser 130 and the second diffuser 170 are an integrated structure.

[0064] In this embodiment, the first diffuser 130 and the second diffuser 170 are an integrated structure. The integrated first diffuser 130 and the second diffuser 170 can avoid the fitting gap between the first diffuser 130 and the second diffuser 170, avoid airflow leakage, and improve the exhaust effect and heat dissipation effect of the fan 100.

[0065] Specifically, the first diffuser 130 and the second diffuser 170 may be manufactured by injection molding, thereby reducing production costs and improving production efficiency.

[0066] As shown in Figures 4 and 5, in some embodiments, optionally, the first diffuser 130 includes: a partition 132, which is arranged inside the first shell 110, and the edge of the partition 132 is spaced apart from the first shell 110; a plurality of first blades 134, which are arranged on the side of the partition 132 away from the motor structure 150, and a first guide channel 136 is formed between adjacent first blades 134; the second diffuser 170 includes: a plurality of second blades 172, which are arranged on the side of the partition 132 away from the first blades 134, and a second guide channel 174 is formed between adjacent second blades 172.

[0067] In this embodiment, the first diffuser 130 includes a partition 132 and a plurality of first blades 134. The first partition 132 is arranged inside the first shell 110, and the edge of the partition 132 is spaced apart from the shell to facilitate the airflow into the second guide channel 174. The plurality of first blades 134 are arranged on the side of the partition 132 away from the motor structure 150. The plurality of first blades 134 are arranged around the impeller 140, and the rotating shaft 160 passes through the partition 132.

[0068] The second diffuser 170 includes a plurality of second blades 172 . The plurality of second blades 172 are disposed on a side of the partition 132 facing the motor structure 150 .

[0069] A first guide channel 136 is formed between adjacent first blades 134 , and a second guide channel 174 is formed between adjacent second blades 172 .

[0070] Furthermore, a first blade 134 and a second blade 172 are respectively provided on both sides of the partition 132 , so that the first diffuser 130 and the second diffuser 170 are more compact, and the volumes of the first diffuser 130 and the second diffuser 170 are reduced.

[0071] Optionally, a plurality of first blades 134 are distributed on the partition 132 in a centrally symmetrical formation, wherein the first blades 134 may be a straight plate structure or a curved plate structure.

[0072] The plurality of second blades 172 are distributed on the partition 132 in a centrally symmetrical manner, wherein the second blades 172 may be a straight plate structure or a curved plate structure.

[0073] As shown in FIG. 4 and FIG. 5 , in some embodiments, optionally, the number of first blades 134 is the same as the number of second blades 172 , and one end of the first blade 134 facing away from the rotation shaft 160 is aligned with the other end of the second blade 172 facing away from the rotation shaft 160 .

[0074] In this embodiment, the number of first blades 134 is the same as the number of second blades 172, one first blade 134 corresponds to one second blade 172, and one end of a first blade 134 facing away from the rotating shaft 160 is aligned with one end of a second blade 172 facing away from the rotating shaft 160, so that the first guide channel 136 and the second guide channel 174 correspond one to one, that is, the outlet of a first guide channel 136 and the inlet of a second guide channel 174 are aligned, and then part of the airflow can be discharged through the first guide channel 136 and directly enter the second guide channel 174, thereby reducing the consumption of airflow and improving the heat dissipation effect of the motor structure 150.

[0075] That is, one end of a first blade 134 facing away from the rotation shaft 160 and one end of a second blade 172 facing away from the rotation shaft 160 are on opposite sides of the same position of the partition plate 132 .

[0076] As shown in Figures 1, 2 and 3, in some embodiments, optionally, the first shell 110 includes: a first main body 116; a second main body 118, located on one side of the first main body 116, the motor mounting cavity 114 is set in the second main body 118, and a vent 112 is formed between the first main body 116 and the second main body 118; wherein the second shell 126 is connected to the first main body 116 and the second main body 118.

[0077] In this embodiment, the first shell 110 includes a first main body 116 and a second main body 118, and the first main body 116 and the second main body 118 are separated, and an annular vent 112 is formed at a position spaced apart between the first main body 116 and the second main body 118, corresponding to a plurality of first guide channels 136, thereby increasing the exhaust volume of the fan 100, and the second shell 126 is connected to the first main body 116 and the second main body 118, so that the first shell 110 and the second shell 126 form a whole. The structure is simple and easy to produce.

[0078] As shown in Figures 2 and 3, in some embodiments, optionally, the second main body 118 includes: a barrel portion 120, the motor mounting cavity 114 is arranged on the barrel portion 120; a first edge 122, arranged on the barrel portion 120, the second diffuser 170 and the first edge 122 are against each other; a second edge 124, arranged on the side of the first edge 122 away from the barrel portion 120, a vent 112 is formed between the second edge 124 and the first main body 116, and a second shell 126 is connected to the second edge 124.

[0079] In this embodiment, the second main body 118 includes a barrel portion 120, a first edge 122 and a second edge 124. The first edge 122 is arranged on the barrel portion 120, and the second diffuser 170 and the first edge 122 are offset from each other, so that the motor mounting cavity 114 is only connected to the first guide channel 136 through the second guide channel 174, thereby increasing the wind pressure of the airflow entering the motor mounting cavity 114 and improving the heat dissipation effect of the motor structure 150.

[0080] In addition, the second edge 124 is arranged on the side of the first edge 122 away from the barrel portion 120, and a vent 112 is formed between the second edge 124 and the first main body 116. That is, the second edge 124 and the first main body 116 are spaced apart to form the vent 112. The second shell 126 is connected to the second edge 124 and the first main body 116, so that the first shell 110 and the second shell 126 form a whole. The structure is simple and easy to produce.

[0081] Optionally, the barrel portion 120 includes air holes, and the airflow entering the motor mounting cavity 114 can be discharged through the air holes, thereby improving the heat dissipation effect on the motor structure 150 .

[0082] Among them, the barrel part 120 and the second edge 124 are both cylindrical, and the first edge 122 realizes the diameter change between the barrel part 120 and the second edge 124. The barrel part 120 and the second edge 124 can both be cylindrical, and the diameter of the second edge 124 is larger than the diameter of the barrel part 120.

[0083] In some embodiments, optionally, the first guiding channel 136 and the second guiding channel 174 are arranged to cross each other.

[0084] In this embodiment, the first guide channel 136 and the second guide channel 174 are cross-distributed, so that the guide directions of the first guide channel 136 and the second guide channel 174 are roughly the same, thereby making it easier for airflow to pass through the second guide channel 174 and improving the heat dissipation effect of the motor structure 150.

[0085] As shown in FIG5 , dotted line A represents the distribution of a first guide channel 136 , and dotted line B represents the distribution of a second guide channel 174 . Dotted line A and dotted line B intersect, so that the guide directions of the first guide channel 136 and the second guide channel 174 are roughly the same.

[0086] As shown in FIG. 1 , FIG. 2 and FIG. 3 , in some embodiments, optionally, the second housing 126 is a volute, and the second housing 126 is disposed around the first housing 110 , and the first guide channel 136 and the vent 112 are opposite to each other.

[0087] In this embodiment, the second shell 126 is a volute, so that the air flow entering the interior of the second shell 126 can be secondary pressurized, thereby improving the efficiency of the fan 100 and reducing noise. In addition, the second shell 126 is arranged around the first shell 110 to improve the air output of the fan 100. In addition, the first guide channel 136 and the vent 112 are opposite to each other, which can reduce the loss of air flow when flowing between the first guide channel 136 and the vent 112, thereby improving the efficiency of the fan 100.

[0088] As shown in FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , in some embodiments, optionally, the first diffuser 130 is a radial diffuser; the second diffuser 170 is a radial diffuser.

[0089] In this embodiment, the first diffuser 130 is a radial diffuser, and the second diffuser 170 is a radial diffuser, thereby reducing the axial height of the first diffuser 130 and the second diffuser 170 along the rotating shaft 160 and reducing the volume of the first diffuser 130 and the second diffuser 170.

[0090] The fan 100 provided in the present application includes components such as an impeller 140 , a first diffuser 130 , a second diffuser 170 , a first housing 110 , a second housing 126 , a motor structure 150 , and a rotating shaft 160 . After the gas is compressed and works by the impeller 140, it enters the first diffuser 130 through the return flow device, expands and pressurizes in the first diffuser 130, and then is split. A part of the gas enters the interior of the second shell 126 for further diffusion, and the other part enters the second diffuser 170. The part of the airflow entering the interior of the second shell 126 is further expanded and pressurized and discharged to the outside. The first diffuser 130 and the impeller 140 are arranged inside the first shell 110, ensuring that the overall size of the fan 100 and the impeller 140 do not change much, while having higher efficiency. At the same time, it plays a noise reduction role through the second shell 126. After entering the second diffuser 170, part of the airflow is further pressurized and flows to the motor structure 150, cooling the motor structure 150, improving the efficiency of the motor, and thereby improving the vacuum degree, suction force and efficiency of the fan 100 while ensuring the structural reliability of the fan 100.

[0091] According to a second aspect of the present application, the present application provides an electrical device, including: a fan 100 provided in the embodiment of the first aspect.

[0092] The electrical equipment provided in this application includes the fan 100 provided in the first aspect embodiment, and therefore has all the beneficial effects of the fan 100 provided in the first aspect embodiment, which will not be listed one by one here.

[0093] Specifically, electrical appliances include range hoods, fans, air conditioners, vacuum cleaners, etc.

[0094] As shown in Figures 6 and 7, Figure 6 is a structural diagram of an embodiment of a volute assembly of the present application; Figure 7 is a structural diagram of C shown in Figure 6. The present application provides a volute assembly 20. The volute assembly 20 includes a volute body 21 and a motor assembly 22. The volute body 21 includes a first end 21a and a second end 21b that are relatively arranged. A mounting portion 213 is protruded from the first end 21a. The mounting portion 213 is used to at least partially install the motor 221 in the motor assembly 22. The mounting portion 213 is detachable or fixedly connected to the first end 21a of the volute body 21. The detachable method can be snap-on, plug-in, etc. The fixing method can be welding or one-piece molding connection, etc.

[0095] The motor assembly 22 includes a motor 221. The motor 221 provides driving force for the impeller 222 mentioned later. The motor 221 is at least partially mounted on the mounting portion 213. Among them, the volute body 21 is a first heat conductor. The mounting portion 213 is a second heat conductor. Both the first heat conductor and the second heat conductor have the function of conducting heat. The heat generated by the motor 221 is conducted from the second heat conductor to the first heat conductor. Because the mounting portion 213 is used to at least partially mount the motor 221 in the motor assembly 22, the heat generated by the motor 221 is at least partially transferred to the mounting portion 213; at the same time, because the mounting portion 213 is connected to the volute body 21, the heat of the mounting portion 213 is conducted to the volute body 21.

[0096] The motor assembly 22 also includes an impeller 222. The impeller 222 is located within the volute body 21 and is connected to the motor shaft of the motor 221. The motor 221 drives the impeller 222 to rotate within the volute body 21. Heat generated by the motor 221 is transferred to the exterior of the volute body 21 via the airflow generated by the rotation of the impeller 222.

[0097] Thus, through the combined effect of the volute body 21 as the first heat conductor and the mounting portion 213 as the second heat conductor, at least part of the heat generated by the motor 221 can be transferred to the volute body 21, and the heat on the volute body 21 is taken away by convection heat exchange between the airflow and the surface of the volute body 21, which can dissipate heat from the motor 221, thereby improving the performance of the motor 221. Compared with the existing volute assembly 20, the volute assembly 20 in this embodiment can improve the power of the motor 221 by transferring the heat from the motor 221 to the volute body 21, thereby improving the performance of the motor 221, so as to meet the requirements of the volute assembly 20 for high vacuum and high suction, thereby improving the overall reliability of the volute assembly 20. In addition, the impeller 222 can also dissipate heat from the motor 221, thereby improving the performance of the motor 221, thereby improving the overall reliability of the volute assembly 20.

[0098] The material of the first heat conductor and the material of the second heat conductor may be the same or different. The first heat conductor may include a metal part. Alternatively, the second heat conductor may include a metal part. Alternatively, both the first heat conductor and the second heat conductor include metal parts. The metal part has a heat-conducting effect and can achieve heat conduction so that at least part of the heat generated by the motor 221 is ultimately conducted to the volute body 21. The metal part may be a pure metal material or a metal alloy material, etc. The pure metal material may be, but is not limited to, aluminum, iron, copper, etc. As in the present embodiment, the mounting portion 213 and the volute body 21 are both made of aluminum. In other embodiments, the first heat conductor and / or the second heat conductor may also include alloy parts, semiconductors, etc.

[0099] In some embodiments, a heat-conducting layer (not shown) is provided between the mounting portion 213 and the motor 221. The heat-conducting layer serves to conduct heat. The heat-conducting layer can more easily transfer heat generated by the motor 221 to the mounting portion 213, thereby improving heat transfer efficiency.

[0100] The thermally conductive layer may be, but is not limited to, thermally conductive adhesive (not shown), a thermally conductive gasket (not shown), a thermally conductive metal layer, a thermally conductive non-metallic layer, etc. When the thermally conductive layer is thermally conductive adhesive, the thermally conductive adhesive not only fills the gap between the motor 221 and the mounting portion 213, facilitating heat conduction, but also serves to secure the motor 221 more easily within the mounting portion 213, thereby improving the stability of the motor 221 installation.

[0101] As shown in Figures 8 and 9, Figure 8 is an exploded view of an embodiment of a volute assembly of the present application; Figure 9 is a schematic structural diagram of D shown in Figure 8. In conjunction with Figures 6 and 7, in some embodiments, the volute assembly 20 includes a fixing bracket 23. The fixing bracket 23 can lock the motor 221 to the mounting portion 213, thereby restraining the motor 221 and reducing vertical movement of the motor 221.

[0102] Specifically, the fixing bracket 23 is provided with at least one first fixing hole 2311. A first arcuate groove 22131 is provided on the outer periphery of the motor 221. A second arcuate groove 2131 is provided on the inner side wall of the mounting portion 213. The first arcuate groove 22131 and the second arcuate groove 2131 are arranged to form a mounting hole 2132. As shown in Figure 14, the first fixing member 240 is used to lock the motor 221 to the mounting portion 213 through the first fixing hole 2311 and the mounting hole 2132. If the first fixing member 240 is sequentially passed through the first fixing hole 2311 and the mounting hole 2132, not only can the motor 221 be locked and the vertical movement of the motor 221 be reduced; but the rotational movement of the motor 221 in the mounting portion 213 can also be limited.

[0103] The first and second arcuate grooves 22131 have identical and symmetrical structures. Alternatively, the first and second arcuate grooves 22131 have different structures, wherein the arc length of the first arcuate groove 22131 is greater than the arc length of the second arcuate groove 2131; or, the arc length of the first arcuate groove 22131 is less than the arc length of the second arcuate groove 2131. The arc lengths of the first and second arcuate grooves 22131 and 2131 can be determined as needed, as long as they are sufficient to enclose the mounting hole 2132.

[0104] The first fixing hole 2311 and the mounting hole 2132 may have the same shape. The first fixing member 240 may be a first fixing bolt. The inner wall of the mounting hole 2132 may be provided with an internal thread. The external thread on the outer periphery of the first fixing bolt is threadedly connected to the internal thread. The number of first fixing holes 2311 may be, but is not limited to, two, three, or four or more.

[0105] As shown in Figures 10 and 11, Figure 10 is a cross-sectional schematic diagram of an embodiment of the volute assembly of the present application; Figure 11 is a partial schematic diagram of an embodiment of the volute assembly of the present application. In conjunction with Figures 6 to 9, the motor 221 further includes a first winding bracket 2211, a second winding bracket 2212, and a motor stator mounting bracket 2213. Both the first winding bracket 2211 and the second winding bracket 2212 are used to wind copper coils. The majority of heat in the motor 221 is generated by the copper coils on the first and second winding brackets 2211, 2212. The first and second winding brackets 2211, 2212 are at least partially located within the mounting portion 213, allowing heat from the copper coils to be transferred to the volute body 21 through the mounting portion 213. The motor stator mounting bracket 2213 is used to reduce hysteresis loss in the copper coils and increase induced electromotive force. The first winding bracket 2211 is at least partially inserted along one end of the motor stator mounting bracket 2213. The second winding bracket 2212 is at least partially inserted along the other end of the motor stator bracket 2213. The first winding bracket 2211 and the second winding bracket 2212 are at least partially pluggable. The first arcuate groove 22131 is provided on the outer wall of the motor stator bracket 2213. Specifically, the mounting hole 2132 is formed between the motor stator bracket 2213 and the mounting portion 213. A thermally conductive layer is provided between the motor stator bracket 2213 and the mounting portion 213.

[0106] Furthermore, the outer wall of the motor stator mounting bracket 2213 is provided with a positioning groove 22132. The positioning groove 22132 serves as a positioning mechanism during the manufacturing process of the motor stator mounting bracket 2213. The number of positioning grooves 22132 can be one, two, or more. The positioning groove 22132 is disposed adjacent to the first arcuate groove 22131. In this embodiment, positioning grooves 22132 are disposed adjacent to both ends of the first arcuate groove 22131.

[0107] As shown in Figure 12, Figure 12 is a structural schematic diagram of the fixing bracket in the volute assembly of the present application. In combination with Figures 6 to 12, in some embodiments, the fixing bracket 23 is provided with a second fixing hole 2321. The second fixing member (not shown in the figure) is used to install the electric control board (not shown in the figure) through the second fixing hole 2321. The second fixing member and the second fixing hole 2321 cooperate with each other to achieve the installation and disassembly of the electric control board. Among them, a third fixing hole (not shown in the figure) can be provided on the electric control board. That is, the second fixing member passes through the second fixing hole 2321 and the third fixing hole in sequence, and fixes the electric control board to the fixing bracket 23.

[0108] The second fixing hole 2321 and the first fixing hole 2311 can be arranged in close proximity. A lug portion 232 is provided on the outer periphery of the fixing bracket 23. The lug portion 232 is provided with the second fixing hole 2321. The fixing bracket 23 can be provided with at least two first fixing holes 2311. The number of first fixing holes 2311 can be, but is not limited to, two, three, or four or more. The fixing bracket 23 can be provided with at least two second fixing holes 2321. The number of first fixing holes 2311 and the number of second fixing holes 2321 can be the same or different. For example, in this embodiment, the number of first fixing holes 2311 and the number of second fixing holes 2321 are both three. Each first fixing hole 2311 and the corresponding second fixing hole 2321 are arranged in close proximity. The fixing bracket 23 includes three first fixing holes 2311, and the horizontal cross-section of the fixing bracket 23 is triangular, which can improve the stability of the installation of the motor 221.

[0109] In some embodiments, the fixing bracket 23 is provided with a first fixing portion 231. The first fixing portion 231 is provided with the above-mentioned first fixing hole 2311. The lug portion 232 is fixed to the outer periphery of the first fixing portion 231. In order to improve the stability of the motor 221 installed on the volute body 21, the number of the first fixing portions 231 can be three or more than four. As in the present embodiment, there are three first fixing portions 231. The fixing bracket 23 is mounted on the volute body 21 through three first fixing portions 231, which not only facilitates the installation of the motor 221, but also enables the installation of the electric control board, and also facilitates the airflow through the space between the fixing bracket 23 and the volute body 21, thereby improving the heat dissipation efficiency. Among them, the number of the first fixing portions 231 and the lug portions 232 are the same, and the three lug portions 232 are located at the outer periphery of the plane where the mounting portion 213 is located, perpendicular to the orthographic projection of the mounting portion 213, thereby enabling the installation and disassembly of the electric control board.

[0110] In some embodiments, the fixed bracket 23 is a third heat conductor. The fixed bracket 23 has a heat-conducting effect and can conduct at least part of the heat of the mounting portion 213 to the fixed bracket 23. That is, the external airflow and the surface convection heat exchange of the fixed bracket 23 take away the heat from the fixed bracket 23, which can dissipate heat from the motor 221, thereby improving the performance of the motor 221. The heat conduction efficiency is improved by the cooperation between the third heat conductor and the second heat conductor. The above-mentioned third heat conductor can be but is not limited to metal parts and alloy parts. The material of the third heat conductor can be the same as or different from the material of the first heat conductor and / or the second heat conductor. As in this embodiment, the materials of the mounting portion 213, the volute body 21 and the fixed bracket 23 can all be aluminum materials, etc.

[0111] In some embodiments, a second fixing portion 233 is provided on a side of the fixing bracket 23 facing the motor 221. The second fixing portion 233 is fixedly connected or detachably connected to the side of the fixing bracket 23 facing the motor 221. As in the present embodiment, the second fixing portion 233 is integrally formed and connected to the fixing bracket 23. The motor 221 is at least partially mounted in the second fixing portion 233. The second fixing portion 233 is used to confine the motor 221, thereby reducing the risk of the motor 221 coming out during movement. For example, the second fixing portion 233 is used to mount the rotating shaft of the motor 221. In actual operation, at least part of the heat generated by the motor 221 can also be directly conducted to the second fixing portion 233 and its fixing bracket 23. The second fixing portion 233 also has a heat-conducting effect. The material of the second fixing portion 233 can be the same as or different from that of the fixing bracket 23. As in the present embodiment, the material of the second fixing portion 233 and the material of the fixing bracket 23 are both aluminum.

[0112] As shown in Figures 6, 8 and 10, in some embodiments, the volute body 21 includes a first volute body 211 and a second volute body 212. The first volute body 211 and the second volute body 212 are detachably connected. The detachable method can be snap-on, plug-in, and bolt connection. As in the present embodiment, the first volute body 211 and the second volute body 212 are snap-on. The mounting portion 213 is provided on the surface of the first volute body 211 facing away from the second volute body 212. The first volute body 211 is located at the lower part of the volute body 21 and can be a lower volute. The second volute body 212 is located at the upper part of the volute body 21 and can be an upper volute. The volute body 21 is formed by the above-mentioned first volute body 211 and the second volute body 212, which facilitates the installation and disassembly of the motor assembly 22 and the like in the volute assembly 20. The first volute body 211 is a first heat conductor. That is, the heat generated by the motor 221 is conducted to the first volute casing 211 by the mounting portion 213 , and the external airflow and the surface convection heat exchange of the first volute casing 211 take away the heat from the first volute casing 211 , which can dissipate heat from the motor 221 and thereby improve the performance of the motor 221 .

[0113] In some embodiments, the second volute 212 may or may not be heat-conducting. When the second volute 212 is heat-conducting, at least some of the heat from the first volute 211 can be transferred to the second volute 212. This means that heat from the second volute 212 is removed by convective heat exchange between the external airflow and the surface of the second volute 212, dissipating heat from the motor 221 and thereby improving the performance of the motor 221. The second volute 212 can be the aforementioned first heat-conducting member. The material of the second volute 212 can be the same as or different from that of the first volute 211. For example, the second volute 212 and the first volute 211 can both be aluminum. Alternatively, the first volute 211 can be aluminum and the second volute 212 can be copper. Thus, the volute assembly 20 can conduct heat through the mounting portion 213, the first volute 211, and / or the second volute 212, and / or the fixing bracket 23, dissipating heat from the motor 221.

[0114] The first volute 211 is provided with the mounting portion 213 and the fixing bracket 23 near the first end 21a. The second volute 212 is provided with an air inlet near the second end 21b for taking in air. The impeller 222 is located in the space enclosed by the first volute 211 and the second volute 212.

[0115] Compared to the prior art, the volute assembly of the present application includes a volute body and a motor assembly. The volute body includes a first end and a second end that are relatively arranged. A mounting portion is protruding from the first end. The motor assembly includes a motor. The motor is at least partially mounted on the mounting portion. The volute body is a first heat conductor, the mounting portion is a second heat conductor, and the heat generated by the motor is conducted from the second heat conductor to the first heat conductor. Through the combined effect of the volute body being the first heat conductor and the mounting portion being the second heat conductor, the heat generated by the motor can be transferred to the volute body, and the heat exchange between the airflow and the surface of the volute body takes away the heat from the volute body, which can dissipate the heat from the motor and thereby improve the performance of the motor. Compared to the existing volute assembly, the volute assembly in this embodiment can improve the motor power by conducting the heat from the motor to the volute body, thereby improving the performance of the motor, etc., so as to meet the vacuum degree, high suction force and other requirements of the volute assembly, thereby improving the overall reliability of the volute assembly. In addition, the impeller can also dissipate the heat from the motor, thereby improving the performance of the motor, etc., thereby improving the overall reliability of the volute assembly.

[0116] As shown in Figure 13, Figure 13 is a simplified structural diagram of an embodiment of a household appliance 200 of the present application. In combination with Figures 6 to 12, the present application provides a household appliance 200. The household appliance 200 includes a volute assembly 20. The volute assembly 20 in this embodiment is the volute assembly 20 described in the above embodiment, and will not be described in detail here. By using the above-mentioned volute assembly 20, the household appliance 200 can transfer the heat generated by the motor 221 in the volute assembly 20 to the volute body 21, and the heat on the volute body 21 is taken away by convection heat exchange between the airflow and the surface of the volute body 21, thereby achieving heat dissipation of the motor 221, thereby improving the performance of the motor 221. On the basis of improving the performance of the motor 221, the power of the motor 221 can also be increased to meet the requirements of the volute assembly 20 for high vacuum degree and high suction, thereby improving the overall reliability of the household appliance 200. The above-mentioned household appliance 200 can be, but is not limited to, a sweeper, a mop, a sweeper and mop all-in-one machine, a base station, etc.

[0117] In this application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in this application based on the specific circumstances.

[0118] In the description of this application, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the components or units referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be understood as limiting this application.

[0119] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0120] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A fan, wherein: include: a first housing, wherein a vent is provided on the first housing and a motor mounting cavity is provided inside the first housing; a second shell connected to the first shell, wherein the interior of the first shell and the interior of the second shell are connected through the vent; an impeller disposed inside the first housing; a first diffuser disposed inside the first housing, the first diffuser comprising a plurality of first flow guide channels, the plurality of first flow guide channels being disposed around the impeller; a second diffuser disposed inside the first housing, the second diffuser comprising a second flow guide channel, the second flow guide channel being in communication with the motor mounting cavity; A motor structure, arranged in the motor mounting cavity; a rotating shaft, provided on the motor structure and connected to the impeller; Wherein, the first guide channel is connected to the vent and the second guide channel.

2. The fan according to claim 1, wherein: The first diffuser and the second diffuser are an integrated structure.

3. The fan according to claim 2, wherein: The first diffuser comprises: a partition, disposed inside the first shell, wherein an edge of the partition is spaced from the first shell; a plurality of first blades, disposed on a side of the partition away from the motor structure, wherein the first guide channel is formed between adjacent first blades; The second diffuser comprises: A plurality of second blades are arranged on a side of the partition away from the first blades, and the second guide channels are formed between adjacent second blades.

4. The fan according to claim 3, wherein: The number of the first blades is the same as the number of the second blades, and one end of the first blade facing away from the rotating shaft is aligned with one end of the second blade facing away from the rotating shaft.

5. The wind turbine according to any one of claims 1 to 4, wherein: The first housing comprises: First subject; a second body, located on one side of the first body, the motor installation cavity being provided in the second body, and the vent being formed between the first body and the second body; Wherein, the second shell is connected to the first body and the second body.

6. The fan according to claim 5, wherein: The second body includes: a barrel portion, wherein the motor mounting cavity is disposed on the barrel portion; a first edge, disposed on the barrel portion, wherein the second diffuser abuts against the first edge; The second edge is arranged on a side of the first edge away from the barrel portion, the vent is formed between the second edge and the first body, and the second shell is connected to the second edge.

7. The wind turbine according to any one of claims 1 to 4, wherein: The first guide channel and the second guide channel are intersected.

8. The wind turbine according to any one of claims 1 to 4, wherein: The second shell is a volute, and the second shell is arranged around the first shell. The first guide channel and the vent are opposite to each other.

9. The wind turbine according to any one of claims 1 to 4, wherein: The first diffuser is a radial diffuser; The second diffuser is a radial diffuser.

10. An electrical device, wherein: include: The fan according to any one of claims 1 to 9.

11. A volute assembly, wherein: include: The volute body comprises a first end and a second end opposite to each other, wherein the first end is provided with a mounting portion; a motor assembly comprising a motor and a moving impeller, wherein the motor is at least partially mounted on the mounting portion, and the moving impeller is disposed in the volute body; The volute body is a first heat-conducting member, the mounting portion is a second heat-conducting member, the heat generated by the motor is transferred from the second heat-conducting member to the first heat-conducting member, and the heat is transported to the outside of the volute body through the airflow generated by the rotation of the impeller.

12. The volute assembly according to claim 11, wherein: The first heat conducting member and / or the second heat conducting member include a metal member.

13. The volute assembly according to claim 11, wherein: A heat conducting layer is provided between the mounting portion and the motor.

14. The volute assembly according to claim 11, wherein: The volute assembly includes a fixing bracket, which locks the motor to the mounting portion.

15. The volute assembly according to claim 14, wherein: The fixing bracket is provided with a first fixing hole, the outer periphery of the motor is provided with a first arc-shaped groove, the inner side wall of the mounting portion is provided with a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are arranged to form a mounting hole, and the first fixing member is passed through the first fixing hole and the mounting hole to lock the motor to the mounting portion.

16. The volute assembly of claim 14, wherein: The fixing bracket is provided with a second fixing hole, and the second fixing piece passes through the second fixing hole for installing the electric control board.

17. The volute assembly of claim 14, wherein: The fixing bracket is a third heat conducting member.

18. The volute assembly of claim 14, wherein: A second fixing portion is provided on a side of the fixing bracket facing the motor, and the motor is at least partially installed in the second fixing portion.

19. The volute assembly of claim 11, wherein: The volute body includes a first volute body and a second volute body, the first volute body and the second volute body are detachably connected, the mounting portion is arranged on a surface of the first volute body away from the second volute body, and the first volute body is the first heat conductor.

20. A household appliance, wherein: A volute assembly comprising the volute assembly according to any one of claims 11 to 19.

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