WO2020077826A1 - 风扇 - Google Patents

风扇 Download PDF

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Publication number
WO2020077826A1
WO2020077826A1 PCT/CN2018/122755 CN2018122755W WO2020077826A1 WO 2020077826 A1 WO2020077826 A1 WO 2020077826A1 CN 2018122755 W CN2018122755 W CN 2018122755W WO 2020077826 A1 WO2020077826 A1 WO 2020077826A1
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WO
WIPO (PCT)
Prior art keywords
impeller
fan
blade
module
hub
Prior art date
Application number
PCT/CN2018/122755
Other languages
English (en)
French (fr)
Inventor
文志华
Original Assignee
广东美的白色家电技术创新中心有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811198056.7A external-priority patent/CN111043056A/zh
Priority claimed from CN201821672641.1U external-priority patent/CN209053810U/zh
Application filed by 广东美的白色家电技术创新中心有限公司, 美的集团股份有限公司 filed Critical 广东美的白色家电技术创新中心有限公司
Publication of WO2020077826A1 publication Critical patent/WO2020077826A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades

Definitions

  • the present disclosure relates to the technical field of air delivery equipment, and particularly to a fan.
  • the fan is an air supply device that can be seen everywhere in daily life.
  • the fan in the related art not only has a short air supply distance, but also has a large noise, and it is very uncomfortable when blowing directly to people.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • the present disclosure proposes a fan, which has a longer air blowing distance.
  • a fan includes: an impeller assembly including: a first impeller and a second impeller, the first impeller including a first hub and circumferentially arranged on the first hub A plurality of first blades, the second impeller includes a second hub and a plurality of second blades arranged circumferentially on the second hub, at least part of the first blades are located on the second blades On the same radial section, a plurality of the first blades are located radially outside of the plurality of second blades; a driving device, the driving device is connected to the first impeller and the second impeller respectively to drive rotation The power input end of the first impeller is different from the power input end of the second impeller.
  • the fan of the embodiment of the present disclosure by arranging at least part of the first blade and the second blade on the same radial cross section, and the power input end of the first impeller is different from the power input end of the second impeller, thereby solving the correlation
  • the fan has a short air supply distance, and the noise is small during use. Even if the fan directly blows against a person, it will not have discomfort.
  • the power input end of the first impeller and the power input end of the second impeller may rotate in opposite directions, and / or, the power input end of the first impeller and the second The power input end of the impeller can rotate in the same direction at a differential speed.
  • the extending direction of the first blade from the root to the end is opposite to the extending direction of the corresponding second blade from the root to the end.
  • the first blade and the second blade have different exit angles.
  • the driving device includes a first motor and a second motor, the first motor is connected to the first impeller, and the second motor is connected to the second impeller; or, The first impeller and the second impeller are driven and rotated by the same motor, and at least one of the first impeller and the second impeller and the motor are provided with a transmission assembly.
  • the fan further includes: a fan case, the fan case defines an installation cavity, the impeller assembly is rotatably disposed in the installation cavity, and the driving device is connected to the fan case.
  • the fan further includes: an air treatment module for processing air flowing through the installation cavity.
  • the air treatment module includes at least one of a heating module, a refrigeration module, a humidification module, a purification module, and an additive module.
  • the heating module includes a heating rod
  • the cooling module includes a semiconductor cooling sheet, the semiconductor The cold end of the cooling fin releases the cooling capacity toward the installation cavity.
  • the fan case includes: a front cover, the front cover is disposed opposite to the first impeller and the second impeller, the front cover is located on the second hub away from the first On one side of a hub, the front cover is formed in a grille shape; on the rear cover, the rear cover is disposed opposite to the front cover, and the rear cover is located on a side of the first hub away from the second hub .
  • the rear cover is a closed cover or the rear cover is grid-shaped.
  • a partition tube is provided on the front cover, and the partition tube is located radially outside of the second blade and radially inside of the first blade.
  • the fan case includes: an outer cylinder, the outer cylinder cover is on a circumferential outer side of the impeller assembly, the front cover and the rear cover are respectively covered on both ends of the outer cylinder, the The axial width of the outer cylinder is greater than the axial width of the first blade.
  • the first impeller includes: a support ring, the support ring is sheathed radially outside the second impeller, and a plurality of the first blades are connected to the support ring; a plurality of Support ribs, a plurality of the support ribs are connected between the support ring and the first hub.
  • a plurality of the support ribs are arranged at intervals in the circumferential direction, and the extending direction of each support rib in the axial direction is deflected relative to the rotation axis.
  • FIG. 1 is a schematic diagram of an impeller assembly of a fan according to an embodiment of the present disclosure
  • FIG. 2 is a schematic view of a fan according to an embodiment of the present disclosure from a perspective
  • FIG. 3 is a schematic diagram of another perspective of a fan according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a fan according to another embodiment of the present disclosure.
  • FIG. 5 is a cross-sectional view of a fan according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of forward air blowing of a fan according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of backward air supply of a fan according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of front and rear air supply of a fan according to an embodiment of the present disclosure.
  • FIG. 9 is another schematic diagram of the front and rear air supply of the fan according to an embodiment of the present disclosure.
  • FIG. 10 is a side view of a fan according to another embodiment of the present disclosure.
  • FIG. 11 is a cross-sectional view of a fan according to another embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of one kind of airflow running trajectory of a fan according to another embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of another airflow running track of a fan according to another embodiment of the present disclosure.
  • Impeller assembly 11: First impeller; 111: First hub; 112: First blade; 113: Support ring; 114: Support rib;
  • 30 fan case; 30a: installation cavity; 31: front cover; 32: rear cover; 33: partition tube; 34: outer tube;
  • the fan 100 according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 to 13.
  • the fan 100 includes an impeller assembly 10 and a driving device 20.
  • the driving device 20 is used to drive the impeller assembly 10 to rotate.
  • the impeller assembly 10 includes a first impeller 11 and a second impeller 12, wherein the first impeller 11 includes a first hub 111 and a plurality of first blades 112, and the plurality of first blades 112 are circumferentially arranged on the first hub On 111, the second impeller 12 includes a second hub 121 and a plurality of second blades 122, the plurality of second blades 122 are circumferentially arranged on the second hub 121, it can be understood that, in FIGS.
  • Both the first blade 112 and the second blade 122 are formed into a three-dimensional spiral structure, at least part of the first blade 112 and the second blade 122 are located on the same radial cross section, and the plurality of first blades 112 are located on the plurality of second blades 122 Radially outside, saving space.
  • the radial cross-section refers to a cross-section perpendicular to the rotation axis of the fan 100.
  • first blade 112 and the second blade 122 are located on the same radial cross section, which means that there is at least one plane perpendicular to the axis of rotation of the fan 100 on the fan 100, and the plane will cut to the first The blade 112 will also intercept the second blade 122.
  • the driving device 20 is connected to the first impeller 11 and the second impeller 12 respectively to drive and rotate.
  • the power input end of the first impeller 11 is different from the power input end of the second impeller 12, that is, the first impeller 11 and the second impeller 12 is not rotating synchronously. Specifically, it can be expressed that the first impeller 11 rotates and the second impeller 12 keeps not rotating, or the first impeller 11 keeps not rotating and the second impeller 12 rotates.
  • the rotation directions of the first impeller 11 and the second impeller 12 are different, for example, the first impeller 11 rotates counterclockwise, the second impeller 12 rotates clockwise, or the first and second impellers 11 and 12 have different rotational speeds
  • the rotation speed of the first impeller 11 is greater than the rotation speed of the second impeller 12 to meet the different air blowing methods of the fan 100, and different control methods can be selected according to different needs of users, and the use is more flexible.
  • this can improve the impeller assembly
  • the air supply distance and the air supply direction of 10 can improve the air pressure value, so that the fan 100 will not feel uncomfortable even if it blows directly to people.
  • the rotation speeds of the first impeller 11 and the second impeller 12 may be fixed, and the rotation speeds of the first impeller 11 and the second impeller 12 may also be adjustable, which is not limited herein.
  • the fan 100 of the embodiment of the present disclosure by arranging at least part of the first blade 112 and the second blade 122 on the same radial cross section, and the power input end of the first impeller 11 is different from the power input end of the second impeller 12
  • the fan 100 also gives a very comfortable feeling when blowing directly to people.
  • the power input end of the first impeller 11 and the power input end of the second impeller 12 can rotate in opposite directions; in some embodiments, the power input end of the first impeller 11 and the power input of the second impeller 12 The ends can rotate in the same direction at different speeds; in other embodiments, the impeller assembly 100 is a speed-adjustable mechanism.
  • the power input end of the first impeller 11 and the power input end of the second impeller 12 can both rotate in opposite directions
  • the power input end of 11 and the power input end of the second impeller 12 can also rotate in the same direction at a differential speed.
  • the fan 100 has at least one operation mode in the first mode and the second mode.
  • the power input end of the first impeller 11 and the power input end of the second impeller 12 are turned in opposite directions,
  • the fan 100 sends air from the back to the front, and the airflow running trajectory is shown in FIG. 6.
  • the fan 100 sends air from the front to the back
  • the trajectory of wind and airflow is shown in FIG.
  • the fan 100 can also be used to supply air at the same time.
  • the trajectory of airflow is shown in FIGS. 8 and 9, so that the first impeller 11 and the second impeller 12 are maintained.
  • the air supply direction of the fan 100 can be changed, and the operation is simple, convenient, and more flexible to use.
  • the rotation speeds of the power input end of the first impeller 11 and the power input end of the second impeller 12 are different, that is, the rotation speeds of the first impeller 11 and the second impeller 12 are controlled to be different, so as to realize the corresponding air supply of the fan 100 Distance, for example, when the rotation speed of the first impeller 11 is less than the rotation speed of the second impeller 12, the air blowing distance of the fan 100 is longer at this time, and when the rotation speed of the first impeller 11 is greater than the rotation speed of the second impeller 12, the fan 100
  • the air supply distance is short, and the air supply distance of the fan 100 can be adjusted by adjusting the rotation speeds of the first impeller 11 and the second impeller 12, compared with the fan 100 in the related art, it can meet the requirement of a longer air supply distance
  • adjusting the rotation speed of the first impeller 11 and the second impeller 12 can also improve the wind pressure value, effectively solving the problem of the fan 100 being uncomfortable to blow directly at people.
  • the extending direction of the first blade 112 from the root to the end is opposite to the extending direction of the corresponding second blade 122 from the root to the end, that is, the helical twisting direction of the first blade 112 and the second
  • the helical twisting direction of the blade 122 is opposite, for example, the end of the first blade 112 extends in a counterclockwise direction and spirally twists backward, and the end of the second blade 122 extends in a clockwise direction and spirally twists backward, so During the rotation of the first impeller 11 and the second impeller 12, the first blade 112 and the second blade 122 can adjust the flow direction of the air flow while pushing the air flow.
  • the outlet angles of the first blade 112 and the second blade 122 are different.
  • the airflow mainly flows in the front-rear direction.
  • the amount of air sucked from or around the front side of the fan 100 is relatively small.
  • the concentrated forward air can increase the forward air distance.
  • the exit angle of the first blade 112 is greater than the exit angle of the second blade 122, the airflow can flow from the front side of the fan 100 or send air to the front side of the fan 100 while flowing in the front-back direction. .
  • the driving device 20 includes two motors 21, which are respectively a first motor and a second motor.
  • the first motor is connected to the first impeller 11 to drive the first impeller 11 to rotate
  • the second motor is connected to the second impeller 12 to drive the rotation of the second impeller 12, at this time the first motor is the power input end of the first impeller 11, the second motor is the power input end of the second impeller 12, In this way, by controlling the first motor and the second motor separately, the independent control of the rotation direction and the rotation speed of the first impeller 11 and the second impeller 12 can be achieved.
  • the first motor drives the first impeller 11 to rotate counterclockwise
  • the second The motor drives the second impeller 12 to rotate clockwise
  • the first motor drives the first impeller 11 at a higher speed
  • the second motor drives the second impeller 12 at a lower speed
  • the power input end of the first impeller 11 and the second impeller 12 The power input terminals are independent of each other, do not interfere with each other, and control is convenient.
  • the first impeller 11 and the second impeller 12 are driven to rotate by the same motor 21, and at least one of the first impeller 11 and the second impeller 12 is provided with the motor 21.
  • the transmission assembly 22 may be specifically connected to the first impeller 11 and the motor 21, and the transmission assembly 22 is provided between the second impeller 12 and the motor 21, or the second impeller 12 is directly connected to the motor 21, and the first impeller A transmission assembly 22 is provided between 11 and the motor 21, and the first impeller 11 and the second impeller 12 are both connected to the motor 21 through the transmission assembly 22, and at least one of the first impeller 11 and the second impeller 12 is connected to the motor A transmission assembly 22 is provided between 21, and the rotation direction and speed of at least one of the impellers are changed by the transmission assembly 22, and then the power input end of the first impeller 11 and the second impeller 12 can be realized under the premise of using a motor 21 The power input ends are different, so that the first impeller 11 and the second impeller 12 can be controlled to rotate
  • the first impeller 11 includes a support ring 113 and a plurality of support ribs 114, the support ring 113 is sheathed radially outward of the second impeller 12, and a plurality of first blades 112 Connected to the support ring 113, a plurality of support ribs 114 are connected between the support ring 113 and the first hub 111, the support ring 113 and the support rib 114 jointly support the plurality of first blades 112, and at the same time
  • the width extending backward not only enhances the structural strength of the first impeller 11, but also supports the rib 114 to disturb the airflow while the impeller assembly 10 rotates.
  • the plurality of first blades 112 are arranged on the support ring 113 at intervals in the circumferential direction, and the extension direction of each support rib 114 in the axial direction is deflected relative to the rotation axis, which can increase the support rib 114 and the first hub
  • the connection strength of 111 further enhances the overall structural strength of the first impeller 11 and has the effect of disturbing the airflow.
  • the fan 100 further includes a fan case 30 that defines a mounting cavity 30 a, and the impeller assembly 20 is rotatably disposed in the mounting cavity 30 a.
  • the driving device 20 is connected to the fan housing 30.
  • the fan housing 30 has a protective effect on the impeller assembly 10 and the driving device 20, and will not be interfered by external interference. At the same time, when used, it can also avoid damage to the human body when the impeller assembly 10 rotates. Safe and reliable.
  • the fan case 30 includes a front cover 31 and a rear cover 32.
  • the front cover 31 is disposed opposite to the first impeller 11 and the second impeller 12, and the front cover 31 is located away from the second hub 121.
  • the front cover 31 is formed in a grid shape, which may be a mesh structure radiating from the center to the surroundings, or may be a plurality of horizontal strips
  • the rear cover 32 is disposed opposite to the front cover 31.
  • the rear cover 32 is located on the side of the first hub 111 away from the second hub 121 (that is, the rear side of the first hub 111). 32 cooperates with the front cover 31 to define the impeller assembly 10 and the driving device 20 in the fan case 30.
  • the rear cover 32 may be a closed cover, so that the fan 100 draws air from the front cover 31 and sends air from the front cover 31.
  • the first impeller 11 and the second impeller 12 are turned in opposite directions to improve the air blowing direction of the fan 100.
  • the fan 100 operates in the airflow mode shown in FIG. 12.
  • the fan 100 follows the airflow running trajectory shown in FIG. 13.
  • the rear cover 32 may also be formed in a grid shape, and if the rear cover 32 is formed in a grid shape, air will flow in the front-rear direction To draw air from the front side to the rear side, or to draw air from the rear side to the front side, the structure of the rear cover 32 can be selected according to specific needs, which is not specifically limited in this disclosure.
  • the front shroud 31 is provided with a spacer 33, which is located radially outside of the second blade 122 and radially inside of the first blade 112.
  • the partition 33 divides the first blade 112 and the second blade 122 into different areas to extract air from different ranges or to send air to different ranges, to increase the amount of air drawn by the fan 100 and the spatial delivery of the fan 100 in space Wind range.
  • the area where the first blade 112 is located is located outside of the area where the second blade 122 is located.
  • the airflow can be sent out from the area where the first blade 112 is located and from the first The area where the two blades 122 are located is sent forward, which increases the air supply range of the fan 100 in space.
  • the air is drawn from the front side of the fan 100.
  • the airflow can be separately from the first blade The area where 112 is located enters in a circular direction and enters directly forward from the area where the second blade 122 is located, and then is sent out intensively from the rear side of the fan 100 to increase the amount of air drawn by the fan 100, thereby increasing the air supply distance.
  • part of the airflow sucked from the rear side is sent out from the area where the first blade 112 is located and sent forward from the area where the second blade 122 is located, and the other part is sent from the area where the first blade 112 is located.
  • the area is sent out in the circumferential direction, it enters from the area where the second blade 122 is located, and then is sent out from the rear side of the fan 100, that is, the front and rear sides of the fan 100 are drawn and supplied with air to improve the air supply direction and the air supply distance.
  • the fan case 30 includes an outer cylinder 34, which is covered on the circumferential outer side of the impeller assembly 10, and a front cover 31 and a rear cover 32 are respectively covered on both ends of the outer cylinder 34,
  • the axial width of the outer cylinder 34 is greater than the axial width of the first blade 11.
  • the fan 100 further includes a base 110 that is used to support the fan case 30 and the impeller assembly 10, and a control unit is provided on the front side of the base 110 to control the start and stop of the fan 100 and adjust the air supply amount the size of.
  • the fan 100 further includes an air treatment module 40 for processing the air flowing through the installation cavity 30a.
  • the air treatment module 40 may be provided on the fan casing 30, and the air treatment module 40 may also be provided on the casing of the driving device 20, which is not limited herein.
  • the provision of the air treatment module 40 on the fan 100 can adapt to seasonal changes and user needs, and achieve diversified functions of the fan 100.
  • the air treatment module 40 may be disposed between the first impeller 11 and the second impeller 12, or at the rear side of the first impeller 11, for example, the air treatment module 40 may be a heating module 41 for heating and flowing through the installation
  • the air in the cavity can also be a cooling module to cool the air flowing through the installation cavity, a purification module for purifying air, etc., or a combination of multiple aforementioned modules.
  • the air is processed so that the air sent by the fan 100 meets the needs of users.
  • the air treatment module 40 includes at least one of a heating module 41, a refrigeration module, a humidification module, a purification module, and a filler module.
  • the air treatment module 40 is a heating module 41, and the heating module 41 is provided in Between the impeller assemblies 10 or on the rear side of the impeller assembly 10, to fully heat the air in the installation cavity 30a, if in summer, the heating module 41 can be activated, so that the fan 100 sends out a higher temperature
  • the air for example, the air treatment module 40 is a refrigeration module.
  • the refrigeration module is provided on the rear side of the impeller assembly 10. If it is used in summer, the refrigeration module can be activated to cool the air in the installation cavity 30a.
  • the air treatment module 40 may also be a humidification module.
  • the humidification module is located at the rear side of the impeller assembly 10 to increase the humidity of the air in the installation cavity 30a and prevent the indoor air from being too dry.
  • the air treatment module 40 can also be a filler module.
  • the filler in the filler module is an incense agent, a disinfectant, etc.
  • the air treatment module 40 may also be a combination of various modules in the above embodiments.
  • the air treatment module 40 includes a heating module 41 and a cooling module.
  • the cooling module is turned off, and when the cooling module is used, heating The module 41 is in a closed state.
  • the air treatment module 40 includes a heating module 41, a humidification module, and a filler module.
  • the heating module 41, the humidification module, and the filler module can be turned on at the same time.
  • the air treatment module 40 includes a heating module 41, and the heating module 41 is located between the first impeller 11 and the second impeller 12.
  • the fans in the related art are generally used in summer and are blown by wind in winter People feel colder and have limited use.
  • the heating module 41 heats the air at the same time to increase the temperature of the air sent out, even when the ambient temperature is relatively high It can still be used at low time, and will not be restricted by seasons and external environment.
  • the heating module 41 includes a plurality of electric heating rods, which are spaced apart around the driving device 20, and the electric heating rods release heat into the installation cavity 30a to heat the air.
  • the rods are arranged at intervals in the circumferential direction of the driving device 20, and the air can be heated around the driving device 20 to improve the heating efficiency and the heating is more uniform.
  • the air treatment module 40 includes a refrigeration module provided on the rear side of the impeller assembly 10, the refrigeration module includes a plurality of semiconductor refrigeration fins, and the cold ends of the semiconductor refrigeration fins release the cooling capacity toward the installation cavity 30a In order to reduce the temperature of the air in the installation cavity 30a, and provide a cool environment for the user.
  • the extending direction of the first blade 112 from the root to the end is opposite to the extending direction of the corresponding second blade 122 from the root to the end, that is, the helical twisting direction of the first blade 112 and the second
  • the helical twisting direction of the blade 122 is opposite, for example, the end of the first blade 112 extends in a counterclockwise direction and spirally twists backward, and the end of the second blade 122 extends in a clockwise direction and spirally twists backward, so During the rotation of the first impeller 11 and the second impeller 12, the first blade 112 and the second blade 122 can adjust the flow direction of the air flow while pushing the air flow.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种风扇(100)，包括：叶轮组件(10)，叶轮组件(10)包括第一叶轮(11)和第二叶轮(12)，第一叶轮(11)包括第一轮毂(111)和多个第一叶片(112)，第二叶轮(12)包括第二轮毂(121)和多个第二叶片(122)，第一叶片(112)的至少部分与第二叶片(122)位于同一径向截面上，多个第一叶片(112)位于多个第二叶片(122)的径向外侧；驱动装置(20)，驱动装置(20)与第一叶轮(11)、第二叶轮(12)分别相连，第一叶轮(11)的动力输入端与第二叶轮(12)的动力输入端不同。

Description

风扇
相关申请的交叉引用
本公开基于申请号为201811198056.7和201821672641.1，申请日为2018年10月15日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本公开作为参考。
技术领域
本公开涉及送出空气设备技术领域，尤其是涉及一种风扇。
背景技术
风扇是日常生活中随处可见的送风设备，相关技术中的风扇，不仅送风距离较短，且噪声较大，直接对着人吹时很不舒服。
发明内容
本公开旨在至少解决现有技术中存在的技术问题之一。
为此，本公开的提出一种风扇，所述风扇的送风距离较长。
根据本公开实施例的风扇，包括：叶轮组件，所述叶轮组件包括：第一叶轮和第二叶轮，所述第一叶轮包括第一轮毂和沿周向排布在所述第一轮毂上的多个第一叶片，所述第二叶轮包括第二轮毂和沿周向排布在所述第二轮毂上的多个第二叶片，所述第一叶片的至少部分与所述第二叶片位于同一径向截面上，多个所述第一叶片位于多个所述第二叶片的径向外侧；驱动装置，所述驱动装置与所述第一叶轮、所述第二叶轮分别相连以驱动转动，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端不同。
根据本公开实施例的风扇，通过将第一叶片的至少部分与第二叶片布置在同一径向截面上，且第一叶轮的动力输入端与第二叶轮的动力输入端不同，从而解决了相关技术中的风扇的送风距离较短的问题，且使用时噪声小，风扇即使直接对着人吹时也不会具有不适感。
根据本公开的一个实施例，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端可反向转动，和/或，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端可同向差速转动。
根据本公开的另一个实施例，所述第一叶片由根部至端部的延伸方向与对应的所述 第二叶片由根部至端部的延伸方向相反。
根据本公开的又一个实施例，所述第一叶片和所述第二叶片的出口角不同。
根据本公开的又一个实施例，所述驱动装置包括第一电机和第二电机，所述第一电机与所述第一叶轮相连，所述第二电机与所述第二叶轮相连；或者，所述第一叶轮和所述第二叶轮由同一电机驱动转动，所述第一叶轮和所述第二叶轮中至少一个与所述电机之间设有传动组件。
在一些实施例中，风扇还包括：风扇壳，所述风扇壳限定出安装腔，所述叶轮组件可转动设在所述安装腔内，所述驱动装置连接在所述风扇壳上。
进一步地，风扇还包括：空气处理模块，所述空气处理模块用于处理流经所述安装腔的空气。
具体地，所述空气处理模块包括：加热模块、制冷模块、加湿模块、净化模块、填加剂模块中的至少一个。
可选地，当所述空气处理模块包括所述加热模块时，所述加热模块包括加热棒；当所述空气处理模块包括所述制冷模块时，所述制冷模块包括半导体制冷片，所述半导体制冷片的冷端朝向所述安装腔释放冷量。
在一些具体实施例中，所述风扇壳包括：前罩，所述前罩正对所述第一叶轮和所述第二叶轮设置，所述前罩位于所述第二轮毂的远离所述第一轮毂的一侧，所述前罩形成为格栅状；后罩，所述后罩相对所述前罩设置，所述后罩位于所述第一轮毂的远离所述第二轮毂的一侧。
可选地，所述后罩为封闭罩或者所述后罩为格栅状。
具体地，所述前罩上设有隔筒，所述隔筒位于所述第二叶片的径向外侧且位于所述第一叶片的径向内侧。
可选地，所述风扇壳包括：外筒，所述外筒罩在所述叶轮组件的周向外侧，所述前罩和所述后罩分别罩在所述外筒的两端，所述外筒的轴向宽度大于所述第一叶片的轴向宽度。
根据本公开的实施例，所述第一叶轮包括：支撑环，所述支撑环外套在所述第二叶轮的径向外侧，多个所述第一叶片连接在所述支撑环上；多个支撑筋，多个所述支撑筋连接在所述支撑环和所述第一轮毂之间。
进一步地，多个所述支撑筋沿周向间隔开排布，每个所述支撑筋在轴向上的延伸方向相对旋转轴线偏转。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得 明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的风扇的叶轮组件的示意图；
图2是根据本公开一个实施例的风扇的一个视角的示意图；
图3是根据本公开一个实施例的风扇的另一个视角的示意图；
图4是根据本公开另一个实施例的风扇的示意图；
图5是根据本公开一个实施例的风扇的剖视图；
图6是根据本公开一个实施例的风扇的向前送风示意图；
图7是根据本公开一个实施例的风扇的向后送风示意图；
图8是根据本公开一个实施例的风扇的前后送风示意图；
图9是根据本公开一个实施例的风扇的前后送风另一示意图；
图10是根据本公开另一个实施例的风扇的侧视图；
图11是根据本公开另一个实施例的风扇的剖视图；
图12是根据本公开另一个实施例的风扇的其中一种气流运行轨迹示意图；
图13是根据本公开另一个实施例的风扇的另一种气流运行轨迹示意图。
附图标记：
100：风扇；110：底座；
10：叶轮组件；11：第一叶轮；111：第一轮毂；112：第一叶片；113：支撑环；114：支撑筋；
12：第二叶轮；121：第二轮毂；122：第二叶片；
20：驱动装置；21：电机；22：传动组件；
30：风扇壳；30a：安装腔；31：前罩；32：后罩；33：隔筒；34：外筒；
40：空气处理模块；41：加热模块。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附 图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
下面参考图1-图13描述根据本公开实施例的风扇100。
如图1所示，根据本公开实施例的风扇100包括叶轮组件10和驱动装置20，驱动装置20用于驱动叶轮组件10转动。
具体地，叶轮组件10包括第一叶轮11和第二叶轮12，其中第一叶轮11包括第一轮毂111和多个第一叶片112，多个第一叶片112沿周向排布在第一轮毂111上，第二叶轮12包括第二轮毂121和多个第二叶片122，多个第二叶片122沿周向排布在第二轮毂121上，可以理解的是，图1至图3中的第一叶片112和第二叶片122均形成为立体螺旋结构，第一叶片112的至少部分与第二叶片122位于同一径向截面上，且多个第一叶片112位于多个第二叶片122的径向外侧，节省占用空间。这里，径向截面指的是垂直于风扇100的旋转轴线的截面。本文中提出第一叶片112的至少部分与第二叶片122位于同一径向截面上，指的是，风扇100上存在至少一个垂直于风扇100的旋转轴线的平面，该平面既会截到第一叶片112上，也会截到第二叶片122上。
另外，驱动装置20与第一叶轮11、第二叶轮12分别相连以驱动转动，第一叶轮11的动力输入端与第二叶轮12的动力输入端不同，即指第一叶轮11与第二叶轮12不是同步转动的。具体可以表现为，第一叶轮11转动，第二叶轮12保持不转动，也可以为第一叶轮11保持不转动，第二叶轮12转动。
还可以是第一叶轮11和第二叶轮12的转动方向不同，例如第一叶轮11逆时针旋转，第二叶轮12顺时针旋转，还可表现为第一叶轮11和第二叶轮12的转速不同，例如第一叶轮11的转速大于第二叶轮12的转速，以满足风扇100不同的送风方式，可以根据用户的不同需求选择不同的控制方式，使用更加灵活，同时，这样既可以改善叶轮组件10的送风距离和送风方向，又可以改善风压值，使得风扇100即使直接对人吹也不会具有不适感。
在本公开实施例的风扇100，第一叶轮11和第二叶轮12的转速可以是固定的，第一叶轮11和第二叶轮12的转速也可以是可调的，这里不作限制。
根据本公开实施例的风扇100，通过将第一叶片112的至少部分与第二叶片122布置在同一径向截面上，且第一叶轮11的动力输入端与第二叶轮12的动力输入端不同，从而解决了相关技术中的风扇100的送风距离较短的问题，且使用时噪声小，风扇100直接对着人吹时也给人很舒适的感觉。
有的实施例中，第一叶轮11的动力输入端与第二叶轮12的动力输入端可反向转动；有的实施例中，第一叶轮11的动力输入端与第二叶轮12的动力输入端可同向差速转动； 还有的实施例中，叶轮组件100为转速可调机构，第一叶轮11的动力输入端与第二叶轮12的动力输入端既可反向转动，第一叶轮11的动力输入端与第二叶轮12的动力输入端也可同向差速转动。
具体地，风扇100具有第一模式和第二模式中的至少一种运行模式，具体地，在第一模式下，第一叶轮11的动力输入端与第二叶轮12的动力输入端的转向相反，采用控制第一叶轮11和第二叶轮12在旋转方向上的不同，实现调整风扇100的送风方向，例如第一叶轮11按照逆时针方向旋转，第二叶轮12则按照顺时针方向旋转时，风扇100为由后向前送风，气流运行轨迹如图6所示，例如第一叶轮11按照顺时针方向旋转，第二叶轮12则按照逆时针方向旋转时，风扇100为由前向后送风，气流运行轨迹如图7所示，再如风扇100还可以为前后同时送风的方式，气流运行轨迹如图8和图9所示，这样，在保持第一叶轮11和第二叶轮12相反旋转方向的前提下，通过调整第一叶轮11和第二叶轮12的旋向，即可改变风扇100的送风方向，操作简单、方便，使用更加灵活。
在第二模式下，第一叶轮11的动力输入端与第二叶轮12的动力输入端的转速不同，即控制第一叶轮11和第二叶轮12的转动速度不同，以实现风扇100对应的送风距离，例如第一叶轮11的转速小于第二叶轮12的转速时，此时风扇100的送风距离较长，在第一叶轮11的转速大于第二叶轮12的转速时，此时风扇100的送风距离较短，通过调整第一叶轮11和第二叶轮12的转速大小进而实现对风扇100的送风距离的调节，相对于相关技术中的风扇100，可以满足较长送风距离的要求，此外，调整第一叶轮11和第二叶轮12的转速大小还可以改善风压值，有效地解决了风扇100直接对着人吹不舒服的问题。
根据本公开的另一个实施例，第一叶片112由根部至端部的延伸方向与对应的第二叶片122由根部至端部的延伸方向相反，即指第一叶片112螺旋扭曲方向和第二叶片122的螺旋扭曲方向相反，例如第一叶片112的端部沿着逆时针的方向延伸且向后螺旋扭曲，第二叶片122的端部沿着顺时针的方向延伸且向后螺旋扭曲，这样，在第一叶轮11和第二叶轮12旋转的过程中，第一叶片112和第二叶片122可以在推动气流流动的同时，调整气流的流动方向。
根据本公开的又一个实施例，第一叶片112和第二叶片122的出口角不同，例如第一叶片112的出口角小于第二叶片122的出口角时，气流主要沿着前后方向流动，气流从风扇100的前侧四周吸入或向风扇100的前侧四周送风的风量较小，此时在其他条件相同的情况下，集中向正前方送风可以增大向前的送风距离，在第一叶片112的出口角 大于第二叶片122的出口角时，气流在沿着前后方向流动的同时，可以从风扇100的前侧四周吸入或向风扇100的前侧四周送风的风量较大。
根据本公开的又一个实施例，驱动装置20包括两个电机21，两个电机21分别为第一电机和第二电机，第一电机与第一叶轮11相连，用以驱动第一叶轮11转动，第二电机与第二叶轮12相连，用以驱动第二叶轮12转动，此时第一电机即为第一叶轮11的动力输入端，第二电机即为第二叶轮12的动力输入端，这样，分别控制第一电机和第二电机，即可实现对第一叶轮11和第二叶轮12在旋向和转速上的独立控制，例如第一电机驱动第一叶轮11逆时针转动，第二电机驱动第二叶轮12顺时针转动，第一电机驱动第一叶轮11的转速较大，第二电机驱动第二叶轮12的转速较小，第一叶轮11的动力输入端和第二叶轮12的动力输入端相互独立，互不干扰，控制方便。
如图5所示，根据本公开的再一个实施例，第一叶轮11和第二叶轮12由同一电机21驱动转动，第一叶轮11和第二叶轮12中至少一个与电机21之间设有传动组件22，具体地，可以是第一叶轮11与电机21直接相连，第二叶轮12和电机21之间设有传动组件22，也可以是第二叶轮12与电机21直接相连，第一叶轮11和电机21之间设有传动组件22，还可以是第一叶轮11和第二叶轮12均通过传动组件22与电机21相连，通过在第一叶轮11和第二叶轮12中至少一个与电机21之间设有传动组件22，利用传动组件22改变其中至少一个叶轮的旋转方向和转速大小，进而在使用一个电机21的前提下，可以实现第一叶轮11的动力输入端和第二叶轮12的动力输入端不同，从而控制第一叶轮11和第二叶轮12之间可以按照相反的方向旋转，还可以分别调整第一叶轮11和第二叶轮12的转速大小。
根据本公开的再一个实施例，如图1所示，第一叶轮11包括支撑环113和多个支撑筋114，支撑环113外套在第二叶轮12的径向外侧，多个第一叶片112连接在支撑环113上，多个支撑筋114连接在支撑环113和第一轮毂111之间，支撑环113和支撑筋114共同对多个第一叶片112起到支撑作用，同时支撑筋114的宽度向后延伸，不仅增强了第一叶轮11的结构强度，且在叶轮组件10旋转的同时，支撑筋114还可以起到扰动气流的作用。
进一步地，多个第一叶片112沿周向间隔地排布在支撑环113上，每个支撑筋114在轴向上的延伸方向相对旋转轴线偏转，这样可以增大支撑筋114与第一轮毂111的连接强度，进而增强第一叶轮11整体的结构强度，同时具有扰动气流的作用。
如图2和图3所示，根据本公开的再一个实施例，风扇100还包括风扇壳30，风扇壳30限定出安装腔30a，叶轮组件20可转动地设在安装腔30a内。驱动装置20连接在 风扇壳30上，风扇壳30对叶轮组件10和驱动装置20具有保护作用，不会受到外界的干扰碰撞，同时在使用时，也可以避免叶轮组件10旋转时损伤人体，更加安全可靠。
进一步地，如图5和图11所示，风扇壳30包括前罩31和后罩32，前罩31正对第一叶轮11和第二叶轮12设置，前罩31位于第二轮毂121的远离第一轮毂111的一侧(即第二轮毂121的前侧)，前罩31形成为格栅状，具体可以为由中心向四周辐射的网状结构，也可以是横置的多个条形口，便于从前侧吸风或者送风，后罩32相对前罩31设置，后罩32位于第一轮毂111的远离第二轮毂121的一侧(即第一轮毂111的后侧)，后罩32与前罩31配合共同将叶轮组件10以及驱动装置20限定在风扇壳30内。
在本公开的描述中，“多个”的含义是两个或两个以上。
根据本公开一个可选的示例，如图4、图10和图11所示，后罩32可以为封闭罩，这样风扇100从前罩31抽风且从前罩31处送风。例如图12和图13中所示的风扇100内的两种气流运行轨迹，第一叶轮11和第二叶轮12的转向相反，用以改善风扇100的送风方向。例如第一叶轮11按照逆时针方向旋转，第二叶轮12则按照顺时针方向旋转时，风扇100为图12所示的气流运行方式。又例如第一叶轮11按照顺时针方向旋转，第二叶轮12则按照逆时针方向旋转时，风扇100为图13所示的气流运行轨迹。
根据本公开另一个可选的示例，如图3、图5和图6所示，后罩32也可以形成为格栅状，若后罩32形成为格栅状，空气会沿着前后方向流动，从前侧抽风向后侧送风，或者从后侧抽风向前侧送风，具体可以根据需要选择后罩32的结构形式，本公开对此不做具体限定。
根据本公开另一个可选的示例，前罩31上设有隔筒33，隔筒33位于第二叶片122的径向外侧且位于第一叶片112的径向内侧，通过在前罩31上设置隔筒33，将第一叶片112和第二叶片122划分成不同的区域，以从不同的范围内抽风或者向不同的范围内送风，增加风扇100的抽风量以及风扇100在空间上的送风范围。第一叶片112所在的区域位于第二叶片122所在区域的外侧，若采用前向送风方式，从风扇100的后侧抽风，气流可以分别从第一叶片112所在的区域环向送出和从第二叶片122所在的区域向正前方送出，增大了风扇100在空间上的送风范围，若采用后向送风方式，从风扇100的前侧抽风，具体地，气流可以分别从第一叶片112所在的区域环向进入和从第二叶片122所在的区域向正前方进入，然后由风扇100的后侧集中送出，增加风扇100的抽风量，进而增大送风距离。
若采用前后同时送风方式，从后侧抽吸的气流部分从第一叶片112所在的区域环向送出和从第二叶片122所在的区域向正前方送出，另一部分从第一叶片112所在的区域 环向送出之后从第二叶片122所在的区域向正前方进入，再由风扇100的后侧送出，即风扇100的前后两侧均抽风送风，改善送风方向和送风距离。
可选地，如图5和图11所示，风扇壳30包括外筒34，外筒34罩在叶轮组件10的周向外侧，前罩31和后罩32分别罩在外筒34的两端，外筒34的轴向宽度大于第一叶片11的轴向宽度，空气在进入安装腔30a后，可以在外筒34所罩设的区域保存一段时间，具有聚集空气的作用，这样在叶轮组件10的驱动下可以使得送风更远，同时将空气聚集在外筒34罩设的区域内，有利于空气处理模块40对空气进行处理，例如加热模块41可以对空气进行充分加热。
需要说明的是，风扇100还包括底座110，底座110用于支撑风扇壳30以及叶轮组件10，且在底座110的前侧设有控制单元，用于控制风扇100的启停以及调节送风量的大小。
在一些实施例中，风扇100还包括空气处理模块40，空气处理模块40用于处理流经安装腔30a的空气。这里，空气处理模块40可以设置在风扇壳30上，空气处理模块40也可以设置在驱动装置20的外壳上，这里不作限制。在风扇100上设置空气处理模块40，可以适应季节变化以及用户的需求，实现该风扇100的功能多样化。
具体地，空气处理模块40可以设置在第一叶轮11和第二叶轮12之间，或者设在第一叶轮11的后侧，例如，空气处理模块40可以为加热模块41用以加热流经安装腔的空气，也可以为制冷模块用以给流经安装腔内的空气降温，还可以为净化模块用于净化空气等，也可以是多个前述模块的组合，空气处理模块40在输送空气的过程中对空气进行处理，以使风扇100送出去的空气满足用户的需求。
根据本公开的一个实施例，空气处理模块40包括加热模块41、制冷模块、加湿模块、净化模块、填加剂模块中的至少一个，例如空气处理模块40为加热模块41，加热模块41设在叶轮组件10之间或者设在叶轮组件10的后侧，用以对安装腔30a内的空气进行充分加热，若在夏季使用时可启动加热模块41，使得风扇100送出去的为较高温度的空气，如空气处理模块40为制冷模块，制冷模块设在叶轮组件10的后侧，若在夏季使用时可启动制冷模块，用以对安装腔30a内的空气进行降温。
随着用户对生活质量需求的逐步提升，空气处理模块40还可以为加湿模块，加湿模块设在叶轮组件10的后侧，用以提高安装腔30a内的空气湿度，避免室内的空气过于干燥，空气处理模块40还可以为填加剂模块，例如填加剂模块中的填加剂为熏香剂，消毒药水等，通过将填加剂模块设在安装腔30a内，通过气流的流动可以快速传播至室内，给用户提供清香或者健康的呼吸环境。
空气处理模块40还可以是上述实施例中多种模块的组合，例如空气处理模块40包括加热模块41和制冷模块，在使用加热模块41时，制冷模块处于关闭状态，在使用制冷模块时，加热模块41处于关闭状态，再如空气处理模块40包括加热模块41、加湿模块和填加剂模块，加热模块41、加湿模块和填加剂模块可以同时开启，上述多种模块依据实际需求进行选取，功能多样化，用以满足不同用户的需求。
根据本公开的另一个实施例，空气处理模块40包括加热模块41，加热模块41位于第一叶轮11和第二叶轮12之间，相关技术中的风扇一般在夏季使用较多，冬天由于吹风使人感觉更加寒冷而使用受到限制，本公开实施例的风扇100，空气在流经叶轮组件10时，同时加热模块41会对空气进行加热，以提升送出去的空气温度，即使在外界环境温度较低时仍可以使用，不会受到季节、外界环境的限制。
根据本公开一个可选的示例，加热模块41包括多个电热棒，多个电热棒环绕驱动装置20间隔开设置，电热棒向安装腔30a内释放热量以加热空气，这样，通过将多个电热棒在驱动装置20的周向上间隔设置，可以在以驱动装置20为中心的四周对空气进行加热，提高加热效率，也是的加热更加均匀。
根据本公开的又一个实施例，空气处理模块40包括制冷模块，制冷模块设在叶轮组件10的后侧，制冷模块包括多个半导体制冷片，半导体制冷片的冷端朝向安装腔30a释放冷量，以降低安装腔30a内的空气温度，给用户提供凉爽的环境。
在本公开的描述中，“多个”的含义是两个或两个以上。
根据本公开的另一个实施例，第一叶片112由根部至端部的延伸方向与对应的第二叶片122由根部至端部的延伸方向相反，即指第一叶片112螺旋扭曲方向和第二叶片122的螺旋扭曲方向相反，例如第一叶片112的端部沿着逆时针的方向延伸且向后螺旋扭曲，第二叶片122的端部沿着顺时针的方向延伸且向后螺旋扭曲，这样，在第一叶轮11和第二叶轮12旋转的过程中，第一叶片112和第二叶片122可以在推动气流流动的同时，调整气流的流动方向。
在本公开的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“前”、“后”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
根据本公开实施例的风扇100的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、 “具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (15)

  1. 一种风扇，其特征在于，包括：
    叶轮组件，所述叶轮组件包括：第一叶轮和第二叶轮，所述第一叶轮包括第一轮毂和沿周向排布在所述第一轮毂上的多个第一叶片，所述第二叶轮包括第二轮毂和沿周向排布在所述第二轮毂上的多个第二叶片，所述第一叶片的至少部分与所述第二叶片位于同一径向截面上，多个所述第一叶片位于多个所述第二叶片的径向外侧；
    驱动装置，所述驱动装置与所述第一叶轮、所述第二叶轮分别相连以驱动转动，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端不同。
  2. 根据权利要求1所述的风扇，其特征在于，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端可反向转动，和/或，所述第一叶轮的动力输入端与所述第二叶轮的动力输入端可同向差速转动。
  3. 根据权利要求1所述的风扇，其特征在于，所述第一叶片由根部至端部的延伸方向与对应的所述第二叶片由根部至端部的延伸方向相反。
  4. 根据权利要求1所述的风扇，其特征在于，所述第一叶片和所述第二叶片的出口角不同。
  5. 根据权利要求1所述的风扇，其特征在于，所述驱动装置包括第一电机和第二电机，所述第一电机与所述第一叶轮相连，所述第二电机与所述第二叶轮相连；或者，
    所述第一叶轮和所述第二叶轮由同一电机驱动转动，所述第一叶轮和所述第二叶轮中至少一个与所述电机之间设有传动组件。
  6. 根据权利要求1所述的风扇，其特征在于，还包括：风扇壳，所述风扇壳限定出安装腔，所述叶轮组件可转动设在所述安装腔内，所述驱动装置连接在所述风扇壳上。
  7. 根据权利要求6所述的风扇，其特征在于，还包括：空气处理模块，所述空气处理模块用于处理流经所述安装腔的空气。
  8. 根据权利要求7所述的风扇，其特征在于，所述空气处理模块包括：加热模块、制冷模块、加湿模块、净化模块、填加剂模块中的至少一个。
  9. 根据权利要求8所述的风扇，其特征在于，当所述空气处理模块包括所述加热模块时，所述加热模块包括加热棒；当所述空气处理模块包括所述制冷模块时，所述制冷模块包括半导体制冷片，所述半导体制冷片的冷端朝向所述安装腔释放冷量。
  10. 根据权利要求6所述的风扇，其特征在于，所述风扇壳包括：
    前罩，所述前罩正对所述第一叶轮和所述第二叶轮设置，所述前罩位于所述第二轮 毂的远离所述第一轮毂的一侧，所述前罩形成为格栅状；
    后罩，所述后罩相对所述前罩设置，所述后罩位于所述第一轮毂的远离所述第二轮毂的一侧。
  11. 根据权利要求10所述的风扇，其特征在于，所述后罩为封闭罩或者所述后罩为格栅状。
  12. 根据权利要求10所述的风扇，其特征在于，所述前罩上设有隔筒，所述隔筒位于所述第二叶片的径向外侧且位于所述第一叶片的径向内侧。
  13. 根据权利要求10所述的风扇，其特征在于，所述风扇壳包括：外筒，所述外筒罩在所述叶轮组件的周向外侧，所述前罩和所述后罩分别罩在所述外筒的两端，所述外筒的轴向宽度大于所述第一叶片的轴向宽度。
  14. 根据权利要求1所述的风扇，其特征在于，所述第一叶轮包括：
    支撑环，所述支撑环外套在所述第二叶轮的径向外侧，多个所述第一叶片连接在所述支撑环上；
    多个支撑筋，多个所述支撑筋连接在所述支撑环和所述第一轮毂之间。
  15. 根据权利要求14所述的风扇，其特征在于，多个所述支撑筋沿周向间隔开排布，每个所述支撑筋在轴向上的延伸方向相对旋转轴线偏转。
PCT/CN2018/122755 2018-10-15 2018-12-21 风扇 WO2020077826A1 (zh)

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