fan

Abstract

The present invention provides a fan comprising: a body comprising an air inlet, a filter, an air outlet, and a fan motor assembly for generating an air flow; and a nozzle connected to the air outlet, for receiving air flow from the body that has passed through the filter and outputting the air flow, the nozzle comprising a first air outlet formed in the housing, a second air outlet built into the housing, and an adjustment assembly for displacing the second air outlet, the first air outlet and the second air outlet jointly defining an air passage for outputting the air flow from the nozzle, and the adjustment assembly moving the second air outlet to change the effective flow cross-section of the nozzle. The present invention can change the state of the air passage within the fan so that the fan can switch between a simple air purifier state and a fan state with an air purifier, thereby expanding usage scenarios and improving user experience.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning equipment, in particular to a fan. Background Art

[0002] With the continuous improvement of living standards and technology, people's requirements for quality of life are increasing day by day, and indoor air quality has become a major issue of concern. Especially with the emergence of smog and PM2.5 problems in recent years, people's demand for air purifiers has also increased.

[0003] Air purifiers are small household appliances used to purify indoor air, primarily addressing indoor air pollution caused by renovations or other factors. Due to the persistent and uncertain nature of pollutant release in indoor air, using an air purifier to purify indoor air is an internationally recognized method for improving indoor air quality. Air purifiers utilize a variety of technologies and media to provide clean and safe air. Common air purification technologies include low-temperature asymmetric plasma air purification, adsorption, negative ionization, negative oxygen ionization, molecular complexation, nano-TiO2, HEPA high-efficiency filtration, electrostatic dust collection, and activated oxygen technology. Materials include photocatalysts, activated carbon, synthetic fibers, and HEPA high-efficiency materials. The cost of a high-quality filter can account for 20% to 30% of the total cost of an air purifier.

[0004] Existing fans with air purifiers usually only have one air duct state. Once the air purifier is started, the fan needs to be turned on to form a high-speed flow of air in the room, which will also generate a certain amount of noise. This state is usually only suitable for summer. In spring, autumn and winter when it is inconvenient to turn on the fan, the user experience is greatly reduced.

[0005] Therefore, the present invention provides a fan. Summary of the Invention

[0006] In response to the problems in the prior art, the purpose of the present invention is to provide a fan that overcomes the problems in the prior art and can change the state of the air duct in the fan so that the fan can switch between a simple air purifier state and a fan state with an air purifier, thereby expanding the usage scenarios and improving the user experience.

[0007] An embodiment of the present invention provides a fan, comprising:

[0008] an integral portion comprising an air inlet, a filter, an air outlet, and a fan motor assembly for generating an air flow; and

[0009] A nozzle is connected to the air outlet, and is used to receive the air flow from the body through the filter and output the air flow. The nozzle includes a first air outlet formed in the shell, a second air outlet built into the shell, and an adjustment component for displacing the second air outlet. The first air outlet and the second air outlet jointly define the air channel of the air flow output nozzle. The adjustment component moves the second air outlet to change the effective flow cross-section of the nozzle.

[0010] Preferably, the adjustment component moves the second air outlet in the nozzle along a first plane perpendicular to the air outlet direction of the nozzle.

[0011] Preferably, the effective flow cross section of the nozzle is an overlapping area of ​​the projection areas of the first air outlet and the second air outlet on the first plane.

[0012] Preferably, when the effective flow cross section of the nozzle is greater than or equal to the flow cross section of the air inlet, the fan is in the air purifier state, and the nozzle emits the air flow;

[0013] When the effective flow cross section of the nozzle is smaller than the flow cross section of the air inlet, the fan is in the fan state, and the nozzle discharges the air flow.

[0014] Preferably, the nozzle has two output air channels and a connecting portion, the extension direction of the output air channels is parallel to the first direction, the air flow passes through the output air channels along the second direction, and the nozzle has a half-frame-shaped nozzle body, which spans both sides of the body.

[0015] Preferably, the adjustment component further comprises:

[0016] Two air guides are movably built into the housing, the air guides are built into the output air duct to transmit air flow, and are provided with the second air outlet and a guide strip with a sliding tenon;

[0017] a flexible linkage member, the flexible linkage member being provided with a rack, the two ends of the flexible linkage member being respectively connected to a linkage bar that can slide in a direction parallel to the output air duct, the linkage bar being provided with an oblique sliding groove, the sliding tenon being limited in the oblique sliding groove; and

[0018] A motor, the output shaft of which is engaged with the rack through a gear, transmits the flexible linkage to change the vertical height of the linkage bar and the air guide, and guides the air guide to move horizontally through the cooperation of the oblique slide groove and the sliding tenon.

[0019] Preferably, the flexible linkage and the motor are arranged at the connecting portion of the nozzle, and when the flexible linkage moves along the extending direction of the nozzle, one of the air guide members rises vertically and the other air guide member falls vertically.

[0020] Preferably, a plane formed by the moving direction of the air guide member and the moving direction of the flexible linkage member is perpendicular to the opening direction of the first air outlet of the nozzle.

[0021] Preferably, the plurality of first air outlets of the nozzle are arranged in a vertical direction, and the plurality of second air outlets are arranged in a vertical direction;

[0022] The air flow passes through the body along a first direction and enters the nozzle along the air flow. The air flow is emitted from the nozzle after moving in at least a second direction opposite to the first direction.

[0023] Preferably, the nozzle and the fan motor assembly are arranged in parallel along the first direction, and the projections of the nozzle and the fan motor assembly based on the same vertical plane at least partially overlap.

[0024] Preferably, the first direction is the direction of gravity, the second direction is the anti-gravity direction, the air inlet is located at the upper part of the body along the direction of gravity, the air outlet is located at the lower part of the body along the direction of gravity, and the fan motor assembly is located in the area between the air inlet and the air outlet.

[0025] The fan of the present invention can change the state of the air duct inside the fan so that the fan can switch between a simple air purifier state and a fan state with an air purifier, thereby expanding the usage scenarios and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0027] Figure 1 This is a three-dimensional diagram of the fan of the present invention from a first viewing angle.

[0028] Figure 2 This is a perspective view of the fan of the present invention from a second viewing angle.

[0029] Figure 3 for Figure 2 sectional view of .

[0030] Figure 4 for Figure 2 Side view of .

[0031] Figure 5 This is an exploded view of the nozzle of the fan of the present invention.

[0032] Figure 6 This is a schematic diagram of the principle of a movable air guide in the nozzle of the fan of the present invention.

[0033] Figure 7 This is a schematic diagram of the projection area of ​​the fan of the present invention when it is in the air purifier state.

[0034] Figure 8 Schematic diagram of the fan of the present invention in the projection area below the fan.

[0035] Reference numerals

[0036] 1 Body

[0037] 2 Filters

[0038] 3 Air intake hood

[0039] 5 Fan motor assembly

[0040] 7 Nozzles

[0041] 70 housing

[0042] 71 First air outlet

[0043] 71A First air outlet projection area

[0044] 72 motor

[0045] 73 flexible linkage

[0046] 74 Second air outlet

[0047] 74A Second air outlet projection area

[0048] 75 linkage bar

[0049] 751 inclined chute

[0050] 76 guide bar

[0051] 761 Sliding Tenon

[0052] 77 Gear

[0053] 78 rack

[0054] 79 air guide

[0055] 8. Housing

[0056] 81 air intake

[0057] Overlapping area of ​​projection area in S1 air purifier state

[0058] Overlapping area of ​​projection area in S2 fan state DETAILED DESCRIPTION

[0059] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through different specific embodiments. The details in the present application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0060] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0061] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0063] In order to clearly describe the present application, components not related to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0064] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0065] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly on" another device, there are no other devices between it.

[0066] Although the terms first, second, etc. are used in some instances herein to represent various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are represented. Furthermore, as used in this article, the singular forms "one," "an," and "the" are intended to also include the plural forms, unless there is a contrary indication in the context. It should be further understood that the terms "comprise," "include," and "include" indicate the presence of features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0067] The technical terms used herein are intended only to refer to specific embodiments and are not intended to limit this application. The singular form used herein also includes the plural form unless the statement explicitly indicates otherwise. The term "comprising" as used in this specification is intended to specify specific features, regions, integers, steps, operations, elements, and / or components and does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and / or components.

[0068] Although not defined differently, all terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are to be interpreted as having meanings consistent with the relevant technical literature and current teachings, and unless otherwise defined, they should not be overly interpreted as ideal or highly formalized meanings.

[0069] Figure 1 This is a three-dimensional diagram of the fan of the present invention from a first viewing angle. Figure 2 This is a perspective view of the fan of the present invention from a second viewing angle. Figure 3 for Figure 2 sectional view of . Figure 4 for Figure 2 A side view of the . Figures 1 to 4As shown, the fan of the present invention comprises: an integral body 1 and a nozzle 7. The body 1 comprises an air inlet, a filter 2, an air outlet and a fan motor assembly 5 for generating an air flow. The nozzle 7 is connected to the air outlet, and is used to receive the air flow from the body 1 through the filter 2 and output the air flow. The nozzle 7 comprises a first air outlet 71 formed in the shell 70, a second air outlet 74 built into the shell 70, and an adjustment component for displacing the second air outlet 74. The first air outlet 71 and the second air outlet 74 jointly define the air passage of the air flow output nozzle 7. The adjustment component moves the second air outlet 74 to change the effective flow cross section of the nozzle 7. In the present invention, the air flow needs to pass through the second air outlet 74 and then through the first air outlet 71 before being output. Controlling the overlapping area of ​​the first air outlet 71 and the second air outlet 74 by the adjustment component is equivalent to controlling the effective flow cross section of the nozzle 7, which can achieve a change in the working state.

[0070] The nozzle 7 in the present invention outputs air flow in at least two states:

[0071] 1. Emission mode when used as a fan: When the effective flow cross-section of the nozzle 7 is smaller than the flow cross-section of the air inlet, the fan is in the fan mode and the nozzle 7 emits air flow. The nozzle 7 can emit high-speed air flow out of the nozzle 7 by pressurizing the air flow to create a "blowing" effect.

[0072] 2. Exhaust status when used as an air purifier:

[0073] When the effective flow cross section of the nozzle 7 is greater than or equal to the flow cross section of the air inlet, the fan is in the air purifier mode and the nozzle 7 discharges the air flow. The nozzle 7 can discharge the purified air to the outside of the nozzle 7 without adding pressure to the air flow (equivalent to the state of creating a "no wind" effect).

[0074] In a preferred embodiment, the adjustment component moves the second air outlet 74 in the nozzle 7 along a first plane perpendicular to the air outlet direction of the nozzle 7, but the present invention is not limited thereto.

[0075] In a preferred embodiment, the effective flow cross section of the nozzle 7 is the overlapping area of ​​the projection areas of the first air outlet 71 and the second air outlet 74 on the first plane, but the present invention is not limited thereto.

[0076] In a preferred embodiment, the nozzle 7 has two output air ducts and a connecting portion, the extension direction of the output air duct is parallel to the first direction, and the air flow passes through the output air duct along the second direction. The nozzle 7 has a half-frame-shaped nozzle body, and the nozzle body spans both sides of the body 1, but is not limited to this.

[0077] In a preferred embodiment, the plurality of first air outlets 71 of the nozzle 7 are arranged in a vertical direction, and the plurality of second air outlets 74 are arranged in a vertical direction, but the present invention is not limited thereto.

[0078] In a preferred embodiment, the airflow passes through the body 1 along a first direction and enters the nozzle 7 along the airflow. The airflow is emitted from the nozzle 7 after moving in at least a second direction opposite to the first direction, but the present invention is not limited thereto.

[0079] In a preferred embodiment, the nozzle 7 and the fan motor assembly 5 are arranged in parallel along the first direction, and the projections of the nozzle 7 and the fan motor assembly 5 based on the same vertical plane at least partially overlap, but the present invention is not limited thereto.

[0080] In a preferred embodiment, the first direction is the direction of gravity, the second direction is the anti-gravity direction, the air inlet is located at the upper part of the body 1 along the direction of gravity, the air outlet is located at the lower part of the body 1 along the direction of gravity, and the fan motor assembly 5 is located in the area between the air inlet and the air outlet, but is not limited to this.

[0081] Figure 5 This is an exploded view of the nozzle of the fan of the present invention. Figure 6 FIG. 1 is a schematic diagram of a movable air guide member in a nozzle of a fan of the present invention. Figures 5 to 6 As shown, the adjustment component of the fan of the present invention includes: two air guides 79, a flexible linkage 73 and a motor 72. Among them, the two air guides 79 are movably built into the housing 70. The air guide 79 is built into the output air duct to transmit air flow and is provided with a second air outlet 74 and a guide bar 76 with a sliding tenon 761. The flexible linkage 73 is provided with a rack 78. The two ends of the flexible linkage 73 are each connected to a linkage bar 75 that can slide in a direction parallel to the output air duct. The linkage bar 75 is provided with an oblique slide 751, and the sliding tenon 761 is limited in the oblique slide 751. The output shaft of the motor 72 is engaged with the rack 78 through a gear 77, driving the flexible linkage 73 to change the vertical height of the linkage bar 75 and the air guide 79, and guiding the air guide 79 to move horizontally through the cooperation of the oblique slide 751 and the sliding tenon 761. The plane formed by the moving direction of the air guide 79 and the moving direction of the flexible linkage 73 is perpendicular to the opening direction of the first air outlet 71 of the nozzle 7, thereby reducing the overall thickness and spatial volume of the nozzle 7.

[0082] In a preferred embodiment, the flexible linkage 73 and the motor 72 are arranged at the connection part of the nozzle 7. When the flexible linkage 73 moves along the extension direction of the nozzle 7, one air guide 79 rises vertically and the other air guide 79 falls vertically, but not limited to this.

[0083] The specific implementation of the present invention is as follows:

[0084] Figure 7 This is a schematic diagram of the projection area of ​​the fan of the present invention when it is in the air purifier state. Figure 8 Schematic diagram of the fan of the present invention in the projection area below the fan. Figure 4 、 5 , 6, 7, 8, the fan of the present invention comprises a body 1 for generating an air flow and a nozzle 7 for ejecting the air flow. The body 1 comprises at least a top cover, a filter 2, an air intake hood 3 for providing an air inlet, a fan motor assembly 5 for generating an air flow, a housing 8 for providing an air outlet, and the nozzle 7. An air intake hole 81 is provided on a first side of the housing 8, and the filter 2 is disposed at a corresponding position inside the air intake hole 81 in the housing 8. The filter 2 is disposed upstream of the air intake hood 3 and surrounds the air intake hood 3. The air intake hood 3 is disposed at the air inlet of the fan motor assembly 5. The fan motor assembly 5 allows the air flow to pass through the body 1 in a first direction, which is the direction of gravity. The nozzle 7 is connected to the air outlet, and is used to receive the air flow from the body 1 and emit the air flow. The air flow enters the nozzle 7 along the air flow, and the air flow is ejected from the nozzle 7 after moving in at least a second direction opposite to the first direction, which is the direction against gravity. The air inlet is provided at the air intake hood 3, and the air intake hood 3 is located at the upper part of the body 1 along the direction of gravity. The air outlet is located at the lower portion of the second side of the housing 8 of the body 1, along the direction of gravity. The fan motor assembly 5 is located in the area between the air inlet and the air outlet. The nozzle 7 has at least one output air duct extending parallel to the first direction, and the air flows through the output air duct along the second direction. The fan of the present invention utilizes an air duct design that is completely different from the prior art. The air intake direction of the fan motor assembly 5 is inverted, and high-pressure air is sucked from the top of the body 1. After passing through the fan motor assembly 5 from top to bottom, the air flow enters the nozzle 7, and the air flow then flows from the nozzle 7 from bottom to top.

[0085] Continue to see Figure 6 、 7When the flexible linkage 73 moves in the clockwise direction (V1 direction), it drives the left air guide 79 upward, while the right air guide 79 descends. Guided by the oblique chute 751, the left air guide 79 moves outward away from the fan's central axis as it ascends (W1 direction; in this embodiment, the plane formed by the V1 and W1 directions is perpendicular to the air outlet direction of the nozzle 7), thereby maximizing the overlap between the second air outlet projected area 74A of the left air guide 79 and the corresponding first air outlet projected area 71A. At the same time, the right air guide 79 is guided by the oblique slide 751 and moves inward toward the central axis of the fan (W1 direction) while descending, thereby maximizing the overlapping area of ​​the second air outlet projected area 74A of the right air guide 79 and the corresponding first air outlet projected area 71A. The overlapping area S1 of the projected area in the air purifier state coincides with the first air outlet projected area 71A and the second air outlet projected area 74A, achieving complete overlap between the first air outlet 71 and the second air outlet 74. Since the total area of ​​the second air outlet, the total area of ​​the first air outlet, and the total area of ​​the effective flow cross-section of the nozzle 7 are greater than or equal to the area of ​​the air inlet, when the fan is in the air purifier state, the nozzle 7 can discharge the purified air to the outside of the nozzle 7 without pressurizing the air flow (equivalent to a state of forming a "no wind" effect), giving priority to providing purified air to the user facing the fan, thereby improving the user's personal experience.

[0086] See also Figure 6 、 8When the flexible linkage 73 moves counterclockwise (in the V2 direction), it drives the air guide 79 on the left side to descend, while simultaneously, the air guide 79 on the right side to ascend. Guided by the oblique chute 751, the air guide 79 on the left side moves inward toward the central axis of the fan (in the W2 direction; in this embodiment, the plane formed by the V2 and W2 directions is perpendicular to the air outlet direction of the nozzle 7) while descending, thereby achieving the misalignment of the second air outlet 74 on the left side with the first air outlet 71, thereby greatly reducing the overlapping area between the second air outlet projected area 74A of the left air guide 79 and the corresponding first air outlet projected area 71A. At the same time, the air guide 79 on the right side is guided by the oblique slide 751, and while rising, it will move in the outward direction away from the central axis of the fan (W2 direction), realizing the misalignment of the second air outlet 74 on the right side and the first air outlet 71, so that the overlapping area of ​​the second air outlet projection area 74A of the right air guide 79 and the corresponding first air outlet projection area 71A is also greatly reduced. Since at this time, the overlapping area S2 of the projection area in the fan state is significantly smaller than the first air outlet projection area 71A or the second air outlet projection area 74A, the total area of ​​the effective flow cross section of the nozzle 7 at this time is significantly smaller than the area of ​​the air inlet. When the fan is in the fan state, the nozzle 7 emits an air flow. The nozzle 7 can emit a high-speed air flow to the outside of the nozzle 7 by pressurizing the air flow to form a "blowing" effect.

[0087] Furthermore, the present invention overlaps the position layout of the fan motor assembly 5 with the position layout of the nozzle 7 in the first direction, further reducing the overall height and making full use of the idle space in the center of the nozzle 7. Moreover, under the premise of equal height, the present invention can realize a larger nozzle 7 and enhance the air supply capacity. The nozzle 7 and the fan motor assembly 5 in the present invention can be arranged in parallel along the first direction (or the second direction), and the projections of the nozzle 7 and the fan motor assembly 5 based on the same vertical plane at least partially overlap. This allows the first air outlet 71 of the nozzle 7 to be set at the same level as the fan motor assembly 5, or even at a height lower than the level of the fan motor assembly 5. By improving the air duct, the present invention divides the long-distance air flow path in the prior art, in which the air flow passes through the fan motor assembly and the nozzle in a single direction, into at least two short-distance air flow paths in opposite directions. The two short-distance air flow paths can be parallel to each other, thereby breaking through the industry technical barrier that the fan motor assembly and the nozzle must be arranged in sequence in the height direction, so that the overall height of the fan can be greatly reduced, the center of gravity of the product is lowered, and the stability of the product's standing posture is improved. In addition, the air inlet located at the top will not suck in dust on the ground when inhaling air, which reduces the load of the filter and eliminates the need to frequently replace the filter, greatly reducing the cost of using the bladeless fan filter.

[0088] In summary, the purpose of the present invention is to provide a fan that can change the state of the air duct inside the fan so that the fan can switch between a simple air purifier state and a fan state with an air purifier, thereby expanding the usage scenarios and improving the user experience.

[0089] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A fan, characterized in that: include: An integral part (1) comprising an air inlet, a filter (2), an air outlet and a fan motor assembly (5) for generating an air flow; as well as a nozzle (7) connected to the air outlet, for receiving the air flow from the body (1) through the filter (2) and outputting the air flow, the nozzle (7) comprising a first air outlet (71) formed on the shell (70), a second air outlet (74) built into the shell (70), and an adjustment component for displacing the second air outlet (74), the first air outlet (71) and the second air outlet (74) jointly defining an air passage of the air flow output nozzle (7), the adjustment component moving the second air outlet (74) to change the effective flow cross-section of the nozzle (7), the nozzle (7) having two output air passages and a connecting portion, the extension direction of the output air passages being parallel to the first direction, the air flow passing through the output air passages along the second direction, the nozzle (7) having a half-frame-shaped nozzle body, the nozzle body being connected across both sides of the body (1); The regulating assembly comprises: two air guides (79) movably built into the housing (70), the air guides (79) being built into the output air duct to transmit air flow and being provided with the second air outlet (74) and a guide bar (76) with a sliding tenon (761); a flexible linkage member (73), the flexible linkage member (73) being provided with a rack (78), and the two ends of the flexible linkage member (73) being respectively connected to a linkage bar (75) that can slide in a direction parallel to the output air duct, the linkage bar (75) An oblique sliding groove (751) is provided, and the sliding tenon (761) is limited in the oblique sliding groove (751); and a motor (72), the output shaft of the motor (72) is engaged with the rack (78) through a gear (77), and the flexible linkage (73) is driven to change the vertical height of the linkage bar (75) and the air guide (79), and the air guide (79) is guided to move horizontally through the cooperation of the oblique sliding groove (751) and the sliding tenon (761). The adjusting component is arranged along a direction perpendicular to the The second air outlet (74) in the nozzle (7) is moved within a first plane of the air outlet direction of the nozzle (7), and the effective flow cross section of the nozzle (7) is the overlapping area of ​​the projection areas of the first air outlet (71) and the second air outlet (74) on the first plane respectively. When the overlapping area of ​​the projection areas coincides with the projection areas of the first air outlet and the second air outlet in the air purifier state, the first air outlet (71) and the second air outlet (74) are completely overlapped, so that the effective flow cross section of the nozzle (7) is greater than or equal to the flow cross section of the air inlet. When the fan is in the air purifier state, the nozzle (7) discharges the air flow. When the second air outlet (74) is misaligned with the first air outlet (71), the overlapping area of ​​the second air outlet projection area of ​​the air guide (79) and the corresponding first air outlet projection area is reduced, so that the effective flow cross section of the nozzle (7) is smaller than the flow cross section of the air inlet. When the fan is in the fan state, the nozzle (7) emits the air flow.

2. The fan according to claim 1, wherein The flexible linkage member (73) and the motor (72) are arranged at the connection portion of the nozzle (7); when the flexible linkage member (73) moves along the extension direction of the nozzle (7), one of the air guide members (79) rises vertically, and the other air guide member (79) falls vertically.

3. The fan according to claim 1, wherein The air flow passes through the body (1) along a first direction and enters the nozzle (7) along the air flow. The air flow is emitted from the nozzle (7) after moving in at least a second direction opposite to the first direction.

4. The fan according to claim 3, wherein The nozzle (7) and the fan motor assembly (5) are arranged in parallel along the first direction, and the projections of the nozzle (7) and the fan motor assembly (5) based on the same vertical plane at least partially overlap.

5. The fan according to claim 4, wherein The first direction is the direction of gravity, the second direction is the direction of counter-gravity, the air inlet is located at the upper part of the body (1) along the direction of gravity, the air outlet is located at the lower part of the body (1) along the direction of gravity, and the fan motor assembly (5) is located in the area between the air inlet and the air outlet.

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