CN215927818U

CN215927818U - Fan and electrical equipment

Info

Publication number: CN215927818U
Application number: CN202121802562.XU
Authority: CN
Inventors: 易正清; 游斌; 石旭东
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-03-01
Anticipated expiration: 2031-08-03

Abstract

The utility model discloses a fan and electrical equipment, wherein the fan comprises a shell, a centrifugal wind wheel and an oblique flow wind wheel. The shell is provided with an air inlet, and the centrifugal wind wheel is rotatably arranged in the shell. The oblique flow wind wheel is arranged corresponding to the air inlet, and the oblique flow wind wheel is suitable for rotating in the same direction with the centrifugal wind wheel. The fan can reduce the noise of the centrifugal wind wheel when rotating at high speed.

Description

Fan and electrical equipment

Technical Field

The utility model relates to the technical field of fans, in particular to a fan and electrical equipment.

Background

In the related art, a fan is composed of a centrifugal wind wheel, a motor and a volute, and an air guide ring is further arranged on the volute. When the fan works, large wind power and wind pressure are output. On the basis, the rotating speed of the centrifugal wind wheel needs to be increased when the wind power and the wind pressure of the centrifugal wind power are further improved. However, the rotation speed is increased to generate larger noise, which affects the use experience.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a fan and aims to solve the technical problem of high noise of the fan.

In order to achieve the purpose, the fan provided by the utility model comprises a shell, a centrifugal wind wheel and an oblique flow wind wheel. The shell is provided with an air inlet, and the centrifugal wind wheel is rotatably arranged in the shell. The oblique flow wind wheel is arranged corresponding to the air inlet, and the oblique flow wind wheel is suitable for rotating in the same direction with the centrifugal wind wheel.

Optionally, the mixed flow wind wheel comprises a hub and mixed flow blades distributed with an outer side surface of the hub around a rotation axis of the hub, the mixed flow blades being arranged obliquely from one side of the hub to the other side of the hub.

Optionally, the diagonal flow wind wheel comprises a fairing, and the fairing is arranged on one side of the hub far away from the centrifugal wind wheel.

Optionally, the shell is provided with a guide shell, the guide shell is arranged at the air inlet, and the oblique flow wind wheel is located in the guide shell.

Optionally, the draft tube has air inlet end and air-out end, the air-out end with the air intake connection of shell, the diameter of draft tube certainly the air inlet end to the air-out end is the crescent setting, the biggest external diameter of diagonal flow wind wheel is less than the diameter of air intake.

Optionally, an air inlet groove is formed in the circumferential wall of the guide shell at a position close to the air outlet end, and the air inlet groove extends along the circumferential direction of the guide shell and is communicated with the air inlet.

Optionally, the draft tube is provided with a plurality of air inlet slots, and the air inlet slots are arranged at intervals along the circumferential direction of the draft tube.

Optionally, the guide shell is detachably connected with the housing.

Optionally, a clamping tenon is arranged on one side of the guide shell, a clamping groove is formed in the shell, and the clamping tenon extends into the clamping groove.

Optionally, the wind turbine further includes a driving device, and the driving device is connected to the centrifugal wind wheel and the diagonal wind wheel to simultaneously drive the centrifugal wind wheel and the diagonal wind wheel to rotate.

Optionally, the driving device includes a motor, the motor includes a motor body and a motor shaft connected to the motor body, and the oblique flow wind wheel and the centrifugal wind wheel are both connected to the motor shaft.

Optionally, the number of the motor shafts is one, and the motor shafts extend out from one side of the motor body and are sequentially connected with the centrifugal wind wheel and the oblique flow wind wheel.

Optionally, the number of the motor shafts is two, the two motor shafts respectively extend out of two sides of the motor body, one of the motor shafts is connected with the centrifugal wind wheel, and the other motor shaft is connected with the oblique flow wind wheel.

Optionally, the wind turbine further includes two driving devices, and the two driving devices are respectively connected to the centrifugal wind wheel and the diagonal flow wind wheel to respectively drive the centrifugal wind wheel and the diagonal flow wind wheel to rotate.

The utility model further provides electrical equipment which comprises a fan, wherein the fan comprises a shell, a centrifugal wind wheel and an oblique flow wind wheel, the shell is provided with an air inlet, the centrifugal wind wheel is rotatably arranged in the shell, the oblique flow wind wheel is arranged corresponding to the air inlet, and the oblique flow wind wheel is suitable for rotating in the same direction as the centrifugal wind wheel.

Optionally, the electrical device is an air conditioner.

The air blower of the utility model is provided with the oblique flow wind wheel at the air inlet, and when the air blower works, the centrifugal wind wheel and the oblique flow wind wheel rotate simultaneously. The airflow is prerotated and accelerated under the action of the oblique flow wind wheel, so that the airflow obtains a certain speed and then enters the shell, and then the airflow is further accelerated by the centrifugal wind wheel and then is discharged from the shell. The fan can output larger wind pressure. Because the air flow is accelerated by the oblique flow wind wheel before entering the shell, the noise generated when the centrifugal wind wheel rotates at high speed to accelerate the air flow in the shell is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a blower according to an embodiment of the present invention;

FIG. 2 is a front view of the blower of FIG. 1;

FIG. 3 is an exploded view of the blower of FIG. 1;

FIG. 4 is a cross-sectional view of the fan structure of FIG. 1;

FIG. 5 is a schematic structural view of a draft tube and a cover plate of the blower fan shown in FIG. 1;

FIG. 6 is a schematic view of the guide shell and the cover plate of FIG. 5;

FIG. 7 is a schematic view of an air inlet slot on the blower guide shell according to the present invention;

FIG. 8 is an assembly view of the draft tube and cover plate of FIG. 7;

FIG. 9 is a front view of the blower cover plate of FIG. 1;

FIG. 10 is an exploded view of another embodiment of a blower of the present invention;

FIG. 11 is a cross-sectional view of the blower of FIG. 10.

The reference numbers illustrate:

reference numerals

Name (R)

Reference numerals

Name (R)

Reference numerals

Name (R)

100

Fan blower

120

Centrifugal wind wheel

141

Wheel hub

110

Outer casing

130

Drive device

142

Blade

111

Cover plate

131

Electric machine

143

Rectifying piece

111a

Air inlet

131a

Motor body

150

Guide shell

111b

Clamping groove

131b

Motor shaft

151

Clamping tenon

112

Spiral casing

132

Motor cover

152

Air inlet tank

113

Air outlet

140

Diagonal flow wind wheel

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

It should be noted that if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides an embodiment of a fan, which can obtain larger wind pressure when the fan works and is not easy to generate larger noise. In an embodiment of the present invention, as shown in fig. 1 to 3, the blower 100 includes a housing 110, the housing 110 is provided with an air inlet 111a, and the centrifugal wind wheel 120 is rotatably disposed in the housing 110. The oblique flow wind wheel 140 is arranged corresponding to the air inlet 111a, and the oblique flow wind wheel 140 is suitable for rotating in the same direction as the centrifugal wind wheel 120.

Specifically, the inside of the outer casing 110 is a hollow cavity for accommodating the centrifugal wind wheel 120. The housing 110 includes a volute 112 and a cover plate 111, and the air inlet 111a is disposed on the cover plate 111. The volute 112 comprises a bottom plate and a baffle plate, the baffle plate is arranged on the bottom plate in an enclosing mode, and the air outlet 113 is arranged on the baffle plate. There are many connection ways of the volute 112 and the cover plate 111, for example, one of the cover plate 111 or the volute 112 is provided with a clamping portion, the other is provided with a clamping groove corresponding to the clamping portion, and the clamping portion is clamped into the clamping groove, so that the cover plate 111 and the volute 112 are fixed. The volute 112 and the cover plate 111 can also be connected through screws, and the cover plate 111 and the volute 112 can be connected through the screws only by arranging corresponding threaded holes and fixing holes on the cover plate 111 and the volute 112. The cover plate 111 and the volute 112 can also be connected through bolts and nuts, the cover plate 111 and the volute 112 are provided with corresponding fixing holes, and the bolts are inserted into the fixing holes and screwed with the nuts to fix the cover plate 111 and the volute 112.

The wind turbine further includes a driving device 130 for driving the centrifugal rotor 120 and the diagonal rotor 140 to rotate. The number of the driving devices 130 can be one, and the centrifugal wind wheel 120 and the diagonal flow wind wheel 140 are connected with the same driving device 130; the number of the driving devices 130 may be two, and the centrifugal wind wheel 120 and the diagonal flow wind wheel 140 are respectively connected to the two driving devices 130. The driving device 130 may include a motor 131, and for example, the driving device includes the motor 131, the motor 131 may drive the centrifugal wind wheel 120 and the oblique-flow wind wheel 140 by directly extending a motor shaft 131b through the motor 131 to connect the centrifugal wind wheel 120 and the oblique-flow wind wheel 140, or may be respectively connected to the centrifugal wind wheel 120 and the oblique-flow wind wheel 140 through two motors 131. The gear mechanism can be connected with the centrifugal wind wheel 120 and the oblique flow wind wheel 140 through a motor shaft 131b, so that the rotating speed of the motor 131 is adjusted and then connected with the centrifugal wind wheel 120 and the oblique flow wind wheel 140. The driving device 130 may be disposed on the volute 112 or the cover plate 111, and is not particularly limited.

One side of the cover plate 111 is provided with an oblique flow wind wheel 140 corresponding to the air inlet 111a, the maximum diameter of the oblique flow wind wheel 140 is smaller than the diameter of the centrifugal wind wheel 120, the larger end of the oblique flow wind wheel 140 is close to the centrifugal wind wheel 120, and the oblique flow wind wheel 140 and the centrifugal wind wheel 120 are coaxially arranged as much as possible, so that the air flow passing through the oblique flow wind wheel 140 is uniformly applied to the centrifugal wind wheel 120. Certainly, the oblique-flow wind wheel 140 and the centrifugal wind wheel 120 may not be coaxially arranged, but the distance between the rotation axis of the oblique-flow wind wheel 140 and the rotation axis of the centrifugal wind wheel 120 should be relatively small, otherwise, the flow direction of the air flow in the fan 100 is relatively turbulent, which results in a reduction in the output wind pressure. The oblique flow wind wheel 120 corresponds to the air inlet 111a in various ways, for example, the oblique flow wind wheel 140 may be disposed outside the housing 110, the oblique flow wind wheel 140 may intersect with a plane where the cover plate 111 is located, and the oblique flow wind wheel 140 may also be disposed inside the housing 110. The diagonal flow wind wheel 140 is connected to the driving device 130. The centrifugal wind wheel 120 is disposed in the volute 112 and connected to the driving device 130. Taking the oblique flow wind wheel 140 disposed outside the housing 110 as an example, when the wind turbine 100 works, the centrifugal wind wheel 120 and the oblique flow wind wheel 140 rotate simultaneously, the oblique flow wind wheel 140 rotates to accelerate the airflow primarily, and the accelerated airflow flows into the housing 110 from the air inlet 111a on the cover plate 111. The centrifugal wind wheel 120 rotates to further accelerate the airflow flowing into the outer shell 110, and the accelerated airflow flows out from the air outlet 113 on the outer shell 110. The air flow is accelerated twice by the diagonal flow wind wheel 140 and the centrifugal wind wheel 120, so that the fan 100 can output higher wind pressure.

It can be understood that the diagonal flow wind wheel 140 can reduce noise to some extent if replaced by an axial flow wind wheel, but the wind pressure output by the fan 100 of the present invention is reduced because the wind pressure generated by the axial flow wind wheel is smaller. The wind pressure generated by the diagonal flow wind wheel 140 is larger, and the wind pressure generated by the fan 100 can be further increased. In addition, the component of the centrifugal wind wheel 120 for accelerating the airflow is a centrifugal wind wheel blade on the centrifugal wind wheel 120, and the centrifugal wind wheel blade is located in the circumferential direction of the centrifugal wind wheel 120, please refer to the airflow direction in fig. 4 and 9, it can be seen that the airflow generated by the diagonal wind wheel 140 can be directly applied to the centrifugal wind wheel blade, which reduces the distance of the airflow flowing in the fan 100 to a certain extent, thereby reducing the wind pressure loss of the airflow in the fan 100 and further increasing the wind pressure of the airflow generated by the fan 100.

Generally, the maximum wind force and the wind pressure generated by the ordinary wind turbine 100 are relatively fixed values, and if the wind pressure is to be increased continuously on the basis, the centrifugal wind wheel 120 is required to further increase the rotation speed, but because the initial speed of the airflow entering the wind turbine 100 is relatively low, the resistance when the centrifugal wind wheel 120 rotates is relatively large, great noise is caused when the centrifugal wind wheel 120 further increases the rotation speed, and the increased wind pressure is limited. If the air flow entering the fan 100 has a certain initial speed, the air resistance is reduced when the centrifugal rotor 120 rotates at a high speed, thereby reducing the noise generated.

The wind turbine 100 according to the present invention includes a housing 110, a driving device 130, a centrifugal wind rotor 120, and an oblique-flow wind rotor 140. The housing 110 includes a volute 112 and a cover plate 111, and the cover plate 111 is provided with an air inlet 111 a. The driving device 130 is disposed on the outer casing 110, and the centrifugal wind wheel 120 is disposed in the volute 112. The fan 100 is provided with an oblique flow wind wheel 140 at the air inlet 111a, and when the fan 100 works, the centrifugal wind wheel 120 and the oblique flow wind wheel 140 rotate simultaneously. The airflow is pre-rotated and accelerated under the action of the oblique flow wind wheel 140, so that the airflow obtains a certain speed and then enters the outer shell 110, and then the airflow is further accelerated by the centrifugal wind wheel 120 and then is discharged from the outer shell 110. Since the air flow is accelerated by the diagonal flow wind wheel 140 before entering the outer shell 110, the noise generated when the centrifugal wind wheel 120 rotates at a high speed to accelerate the air flow in the outer shell 110 is reduced.

In one embodiment, referring to fig. 3 and 4, the mixed flow wind wheel 140 includes a hub 141 and mixed flow blades 142, the mixed flow blades 142 are distributed around a rotation axis of the hub 141 and an outer side surface of the hub 141, and the mixed flow blades 142 are disposed to be inclined from one side of the hub 141 to the other side of the hub 141. The diagonal flow blades 142 are provided at intervals in the circumferential direction of the hub 141. The diagonal flow wind wheel 140 has an inlet end and an outlet end, and the diameter of the inlet end of the diagonal flow wind wheel 140 is smaller than the diameter of the outlet end. The airflow enters the diagonal flow wind wheel 140 from the inlet end, after the diagonal flow wind wheel rotationally accelerates the airflow, a part of the airflow flows out from the outlet end along the axial direction of the diagonal flow wind wheel 140, and a part of the airflow flows out along the direction perpendicular to the axial direction of the diagonal flow wind wheel 140. Regarding the axial flow wind wheel, the centrifugal wind wheel and the oblique flow wind wheel, it is easy to understand that when the axial flow wind wheel works, the flowing direction of the airflow passing through the axial flow wind wheel is not changed, the airflow flows in along the direction of the rotating shaft of the axial flow wind wheel, and after passing through the axial flow fan, the airflow still flows out along the direction of the rotating shaft, and the amount of wind generated by the axial flow wind wheel is large, but the wind pressure is lifted slightly. When the centrifugal wind wheel 120 works, the flow direction of the airflow passing through the centrifugal wind wheel 120 is changed from the direction of the rotating shaft to the radial direction, and the wind pressure generated by the centrifugal wind wheel 120 is larger, but the wind volume is smaller. The hub diameter of the air inlet end of the diagonal flow wind wheel 140 is small, and the hub diameter of the air outlet end of the diagonal flow wind wheel 140 is large, so that when the diagonal flow wind wheel 140 works, on one hand, airflow flows along the rotating shaft of the diagonal flow wind wheel 140, and on the other hand, the airflow performs centrifugal motion, so that the diagonal flow wind wheel 140 combines the characteristics of the axial flow wind wheel and the centrifugal wind wheel, and the airflow pressure and the airflow volume generated by the diagonal flow wind wheel 140 are large.

In one embodiment, the diagonal flow rotor 140 includes a fairing 143, and the fairing 143 is disposed on a side of the hub 141 away from the centrifugal rotor 120. The rectifying piece 143 is arranged in a cone shape, and the cone top of the rectifying piece 143 is arranged in an arc shape. The rectifying piece 143 can integrate the air flow moving direction when the oblique flow wind wheel 140 enters air, the air flow flows to the rectifying piece 143, the speed of the air flow slightly rises, and after passing through the rectifying piece 143, the air flow can uniformly flow to the oblique flow wind wheel 140, so that the acceleration effect of the oblique flow wind wheel 140 on the air flow is improved. Meanwhile, the rectifying member 143 prevents the air flow from generating a vortex, thereby preventing energy loss of the air flow. The connection between the rectifying member 143 and the hub 141 may be in various manners, for example, the rectifying member 143 is provided with an external thread, the hub 141 is provided with an internal thread, and the rectifying member 143 is in threaded connection with the hub 141. The rectifying piece 143 may further have a through hole for a screw to pass through, the hub 141 is provided with a threaded hole, and the rectifying piece 143 is connected to the hub 141 through a screw. The connection manner of the fairing 143 and the hub 141 may also be a snap connection, an interference connection, etc., and is not limited in particular.

In an embodiment, referring to fig. 3 to 6, the casing 110 is provided with a guide cylinder 150, the guide cylinder 150 is disposed at the air inlet 111a, and the oblique-flow wind wheel 140 is located in the guide cylinder 150.

Specifically, the guide cylinder 150 is disposed on the cover plate 111, and the guide cylinder 150 is used for guiding the airflow accelerated by the oblique-flow wind wheel 140 to the air inlet 111 a. If the guide cylinder 150 is not arranged, a part of the airflow accelerated by the oblique flow wind wheel 140 flows away from the direction perpendicular to the axis of the oblique flow wind wheel 140 and does not enter the outer shell 110. After the guide shell 150 is arranged, the part of the airflow can be guided into the outer shell 110, so that the flow rate of the oblique flow wind wheel 140 accelerating the airflow is improved. The guide cylinder 150 is combined with the diagonal flow wind wheel 140, so that the airflow flows in from the air inlet end of the guide cylinder 150 and flows out from the air outlet end of the guide cylinder 150, the airflow generated by the diagonal flow wind wheel 140 is gathered and flows into the air inlet 111a on the cover plate 111, and the working efficiency of the diagonal flow wind wheel 140 is improved. Regarding the connection manner between the guide cylinder 150 and the cover plate 111, the guide cylinder 150 and the cover plate 111 may be detachably connected, such as a screw connection, a threaded connection, a snap connection, and the like; the guide cylinder 150 and the cover plate 111 may also be fixedly connected, such as welded, and may also be integrally formed, and is not limited in this respect. It should be noted that, the guide shell 150 detachably connected may be additionally provided with an air guiding ring in the circumferential direction of the air inlet 111a, and the air guiding ring may position the overall shape of the guide shell 150, so that the shape of the guide shell 150 is not deformed, thereby ensuring the ability of the guide shell 150 to gather the airflow.

On the basis of the above embodiment, the draft tube 150 has an air inlet end and an air outlet end, the air outlet end is connected to the air inlet 111a of the housing 110, the diameter of the draft tube 150 gradually increases from the air inlet end to the air outlet end, and the maximum outer diameter of the oblique flow wind wheel 140 is smaller than the diameter of the air inlet 111 a. If the guide air duct is a cylinder with a constant diameter, considering the inclined arrangement of the oblique flow wind wheel 140, the air flow accelerated by the oblique flow wind wheel 140 flows out from the side with a larger gap between the oblique flow wind wheel 140 and the guide air duct 150, that is, the air inlet end of the guide air duct 150, so that the capacity of the guide air duct 150 for gathering the air flow is reduced, and the flow of the accelerated air flow of the oblique flow wind wheel 140 is reduced. The diameter of the guide cylinder 150 gradually increases from the air inlet end to the air outlet end, so that the airflow accelerated by the oblique flow wind wheel 140 can be guided by the guide cylinder 150 to be close to the air inlet 111a, and the airflow accelerated by the oblique flow wind wheel 140 enters the shell 110 as much as possible, thereby further improving the flow rate of the airflow accelerated by the oblique flow wind wheel 140. As shown in fig. 8 and 9, the guide cylinder 150 is fixedly connected to the cover plate 111, and the maximum outer diameter of the oblique-flow wind wheel 140 is smaller than the diameter of the air inlet 111 a. In this embodiment, the guide cylinder 150 and the cover plate 111 may be fixedly connected by welding or the like, or the guide cylinder 150 and the cover plate 111 are integrally formed. In this way, when the fan 100 is assembled, the oblique flow wind wheel 140 can extend into the guide cylinder 150 from the air inlet 111a only if the maximum diameter of the oblique flow wind wheel 140 is smaller than the diameter of the air inlet 111 a.

In an embodiment, an air inlet groove 152 is disposed on the circumferential wall of the guide cylinder 150 at a position close to the air outlet end, and the air inlet groove 152 extends along the circumferential direction of the guide cylinder 150 and is communicated with the air inlet 111 a. Referring to fig. 7 and 8, when the fan is in operation, most of the airflow enters the casing 110 after flowing through the oblique-flow wind wheel 150 and is accelerated by the centrifugal wind wheel 120, and by arranging the air inlet slot 152 at the air outlet end of the guide cylinder 150, part of the airflow directly enters the casing 110 from the air inlet slot 152 and is accelerated by the centrifugal wind wheel 120, thereby further increasing the flow rate of the airflow blown out by the fan 100. Regarding the form of the air inlet groove 152, the air inlet groove 152 may be a long strip shape, and a plurality of long strip-shaped air inlet grooves 152 extend along the circumferential direction of the guide cylinder 150. The air inlet groove 152 may also be a circular hole, a square hole, a diamond hole, or the like, and the air inlet groove 152 is provided with a plurality of rows along the circumferential direction of the guide shell 150 and in the axial direction of the guide shell 152.

On the basis of the above embodiment, the guide shell 150 is provided with a plurality of the air inlet slots 152, and the plurality of air inlet slots 152 are arranged at intervals along the circumferential direction of the guide shell 150. The number of the air inlet slots 152 is at least two. It should be noted that the interval of the air inlet slots 152 in the circumferential direction of the guide shell 150 should be as small as possible so as to increase the air inlet amount of the air inlet slots 152. However, since the air inlet slots 152 are disposed at one side of the air outlet end of the guide cylinder 150 and one side of the air outlet end of the guide cylinder 150 is connected to the cover plate 111, the air outlet end of the guide cylinder 150 is subjected to a large force, and the air inlet slots 152 are spaced apart at a distance that ensures the strength of the guide cylinder 150 and prevents breakage during use.

In one embodiment, the guide cylinder 150 is detachably connected to the cover plate 111. The detachable connection may be a threaded connection, a screw connection, a snap connection, etc., and is not limited herein. The guide shell 150 and the cover plate 111 are detachably connected, so that the guide shell 150 can be finally assembled during assembly, and the assembly process is simplified. Moreover, the guide cylinder 150 is detachably connected, so that the fan 100 can be conveniently cleaned and maintained during use. In the cleaning and maintenance process, after the guide shell 150 is disassembled, the diagonal flow wind wheel 140 in the guide shell can be disassembled. If the diameter of the centrifugal wind wheel 120 is smaller than the diameter of the air outlet 111a, the centrifugal wind wheel 120 can be detached from the volute 112. Then, the fan 100 can be further cleaned or maintained, most problems can be solved by disassembling the guide cylinder 150, and the process of disassembling the shell 110 is omitted, so that the subsequent maintenance procedures such as cleaning and maintenance are simplified, and the maintenance cost is saved.

On the basis of the previous embodiment, as shown in fig. 5, a tenon 151 is disposed on one side of the guide shell 150, the cover plate 111 is provided with a slot 111b, and the tenon 151 extends into the slot 111b for fixing. Furthermore, a boss is arranged on the tenon 151, and the width of the boss of the tenon 151 is greater than that of the slot 111 b. When the tenon 151 is inserted into the slot 111b, the slot 111b is elastically deformed, so that the tenon 151 is inserted into the slot 111 b. After the tenon 151 is clamped, the elastic deformation of the clamping groove 111b is recovered, and the boss of the tenon 151 makes the tenon 151 unable to fall off from the clamping groove 111b, so as to connect the guide cylinder 150 with the cover plate 111. Or, the tenon 151 is provided with a boss, the diameter of the circumference of the boss is larger than that of the circumference of the clamping groove 111b, when the tenon 151 is connected with the clamping groove 111b, the tenon 151 generates elastic deformation and is clamped into the clamping groove 111b, then the elastic deformation is recovered, and under the action of the boss, the tenon 151 cannot fall off from the clamping groove 111b, so that the guide cylinder 150 is connected with the cover plate 111.

In an embodiment, the wind turbine further includes a driving device 130, and the driving device 130 is connected to the centrifugal rotor 120 and the diagonal rotor 140 to simultaneously drive the centrifugal rotor 120 and the diagonal rotor 140 to rotate.

On the basis of the above embodiment, the driving device 130 may include a motor 131, the motor 131 includes a motor body 131a and a motor shaft 131b connected to the motor body 131a, and both the oblique-flow wind wheel 140 and the centrifugal wind wheel 140 are connected to the motor shaft 131 b. Regarding the motor 131, the motor 131 is mounted on the housing 110 through a motor cover 132. The diagonal flow wind wheel 140 and the centrifugal wind wheel 120 are installed on the same motor shaft 131 b.

In one embodiment, the number of the motor shafts 131b is one, the motor shafts 131b extend from one side of the motor body 131a and sequentially connect the centrifugal wind wheel 120 and the oblique-flow wind wheel 140, and the centrifugal wind wheel 120 is located between the oblique-flow wind wheel 140 and the motor body 131 a. It is worth mentioning that the motor 131 is installed on one side of the volute 112 away from the cover plate 111, one side of the volute 112 away from the cover plate 111 is provided with an accommodating cavity for accommodating the motor 131, and the motor 131 can be arranged in the accommodating cavity, so that the overall size of the fan 100 is reduced, and the space utilization rate is improved. The motor shaft 131b extends from one end of the motor 131, extends into the volute 112, and then extends from the air inlet 111 a. The centrifugal wind wheel 120 is installed in the volute 112 and on the motor shaft 131b, and the oblique wind wheel 140 is installed at the air outlet 113 and connected with the motor shaft 131 b.

In one embodiment, the number of the motor shafts 131b is two, two of the motor shafts 131b respectively extend from two sides of the motor body 131a, one of the motor shafts 131b is connected to the centrifugal wind wheel 120, and the other motor shaft 13b is connected to the oblique-flow wind wheel 140. The motor 131 is arranged between the centrifugal wind wheel 120 and the oblique flow wind wheel 140, so that the centrifugal wind wheel 140 and the oblique flow wind wheel 120 rotate coaxially. The motor 131 may be disposed on the cover plate 111, and the motor 131 may also be disposed on the volute 112. It should be noted that the airflow accelerated by the diagonal flow wind wheel 140 needs to be applied to the centrifugal wind wheel 120, the motor 131 may be mounted on the cover plate 111 or the volute 112 by means of a bracket or the like, and is located at the center of the air inlet 111a, and the motor 131 has a certain distance from the edge of the diagonal flow wind wheel 140, so that the motor 131 does not affect the airflow generated by the diagonal flow wind wheel 140 to the centrifugal wind wheel 140.

In an embodiment, the wind turbine 100 further includes two driving devices 130, and the two driving devices 130 are respectively connected to the centrifugal wind rotor 120 and the diagonal wind rotor 140 to respectively drive the centrifugal wind rotor 120 and the diagonal wind rotor 140 to rotate. The centrifugal wind wheel 120 and the diagonal flow wind wheel 140 can have different rotating speeds by arranging two driving devices 130 to respectively drive the centrifugal wind wheel 120 and the diagonal flow wind wheel 140. Therefore, the centrifugal wind wheel 120 and the diagonal flow wind wheel 140 can have a proper speed ratio by adjusting the rotating speeds of the different driving devices 130, so that the output wind pressure is increased. The centrifugal wind wheel 120 and the diagonal flow wind wheel 140 are driven by two driving devices 130, so that the load of the driving devices can be reduced, and the service life of the driving devices 130 can be prolonged. And two driving devices 130 are adopted, so that when one driving device 130 is damaged, the other driving device 130 can still drive the centrifugal wind wheel 120 or the oblique flow wind wheel 140 to operate, thereby ensuring that the fan 100 can still generate wind pressure, enabling the fan 100 to still continue to work, thereby striving for time for obtaining maintenance and reducing loss caused by the stop of the fan 100. With regard to the mounting position of the two driving devices 130, one of the driving devices 130 may be mounted on the volute 112, and the driving device 130 is connected with the centrifugal wind wheel 120. Another driving device 130 may be disposed between the centrifugal rotor 120 and the diagonal flow rotor 140, and the driving device 130 may be fixed to the cover plate 111 or the volute 112 by a bracket.

The present invention further provides an electrical device, which includes a blower 100, and the specific structure of the blower 100 refers to the above embodiments, and since the electrical device adopts all the technical solutions of all the above embodiments, the electrical device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein, the electrical equipment can be an air conditioner, a range hood, an air purifier or an integrated stove and the like.

Taking the electrical equipment as an example of an air conditioner, the air conditioner comprises a casing, a heat exchanger arranged in the casing and the fan 100 as described above, wherein the casing is provided with an air inlet and an air outlet, the fan 100 is arranged close to the air inlet, the heat exchanger is arranged close to the air outlet, and the air outlet faces the heat exchanger. When the air conditioner is operated, the motor drives the fan to rotate, external air flow enters the shell from the air inlet, the oblique flow wind wheel 140 of the fan 100 is used for carrying out primary acceleration on the air flow, the accelerated air flow enters the volute 112 of the fan 100 and is further accelerated by the centrifugal wind wheel 120, and the accelerated air flow is blown out from the air outlet 113. The fan 100 blows airflow to the heat exchanger, and the airflow is discharged from the air outlet after heat exchange of the heat exchanger, so that the refrigeration or heating process of the air conditioner is realized.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention that are made by using the contents of the specification and the drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. A fan, characterized in that the fan comprises:

the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an air inlet;

the centrifugal wind wheel is rotatably arranged in the shell; and

the inclined flow wind wheel is arranged corresponding to the air inlet, and the inclined flow wind wheel is suitable for rotating in the same direction with the centrifugal wind wheel.

2. The wind turbine of claim 1, wherein the diagonal flow wind rotor comprises a hub and diagonal flow blades distributed on an outer surface of the hub about a rotational axis of the hub, the diagonal flow blades being arranged obliquely from one side of the hub to the other side of the hub.

3. The wind turbine of claim 2, wherein the diagonal flow rotor comprises a fairing located on a side of the hub remote from the centrifugal rotor.

4. The fan of claim 1, wherein the housing is provided with a guide cylinder, the guide cylinder is arranged at the air inlet, and the diagonal flow wind wheel is positioned in the guide cylinder.

5. The fan of claim 4, wherein the guide cylinder has an air inlet end and an air outlet end, the air outlet end is connected to the air inlet of the housing, the diameter of the guide cylinder is gradually increased from the air inlet end to the air outlet end, and the maximum outer diameter of the oblique-flow wind wheel is smaller than the diameter of the air inlet.

6. The fan as claimed in claim 5, wherein the circumferential wall of the guide shell is provided with an air inlet slot at a position close to the air outlet end, and the air inlet slot extends along the circumferential direction of the guide shell and is communicated with the air inlet.

7. The fan as claimed in claim 6, wherein the guide shell is provided with a plurality of the air inlet slots, and the air inlet slots are arranged at intervals along the circumferential direction of the guide shell.

8. The fan of claim 4, wherein the baffle cylinder is removably coupled to the housing.

9. The fan of claim 8, wherein a latch is disposed on one side of the guide shell, and a slot is disposed on the housing, wherein the latch extends into the slot.

10. The wind turbine of any one of claims 1 to 9, further comprising a driving device connected to the centrifugal rotor and the diagonal rotor to simultaneously drive the centrifugal rotor and the diagonal rotor to rotate.

11. The fan of claim 10, wherein the driving device comprises a motor, the motor comprises a motor body and a motor shaft connected to the motor body, and the diagonal flow wind wheel and the centrifugal wind wheel are both connected to the motor shaft.

12. The fan as claimed in claim 11, wherein the number of the motor shaft is one, and the motor shaft extends from one side of the motor body and sequentially connects the centrifugal wind wheel and the diagonal flow wind wheel.

13. The fan according to claim 11, wherein the number of the motor shafts is two, two of the motor shafts respectively extend from two sides of the motor body, one of the motor shafts is connected to the centrifugal wind wheel, and the other motor shaft is connected to the diagonal wind wheel.

14. The wind turbine according to any one of claims 1 to 9, further comprising two driving devices, wherein the two driving devices are respectively connected to the centrifugal wind wheel and the diagonal flow wind wheel to respectively drive the centrifugal wind wheel and the diagonal flow wind wheel to rotate.

15. An electrical apparatus, characterized in that it comprises a fan according to any one of claims 1 to 14.

16. The electrical apparatus of claim 15, wherein the electrical apparatus is an air conditioner.