Fan structure

Abstract

The present invention provides a fan structure, which includes a casing, the casing having a accommodating chamber, a first air outlet and a second air outlet; the accommodating chamber is connected to the first air outlet and the second air outlet respectively; a volute, the volute has a turbine chamber, and the volute has an air inlet and an air outlet connected to the turbine chamber; an air outlet mechanism, the air outlet mechanism includes a first exhaust port connected to the first air outlet and a second exhaust port connected to the second air outlet; a return air component, the return air component is used to block the air inlet, and the position of the return air component can be adjusted; the return air component has a first return air position located between the air inlet and the first air outlet, and the return air component has a second return air position located between the air inlet and the second air outlet. The fan structure of the present invention solves the problem of poor air outlet effect of the duct machine in the prior art.

Description

Technical Field

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

[0002] Currently, traditional ducted air conditioners primarily use horizontal, sideways air delivery. When heating, hot air is blown out horizontally. Due to its low density, hot air rises, making it difficult for the hot air to reach areas where people move, resulting in poor heating performance. According to tests and calculations, the heat generated by traditional units in areas where people move accounts for only 40% of the total heating capacity. 60% of the electrical energy is converted into ineffective heat, resulting in extremely high winter air conditioning power consumption and significant energy waste.

[0003] Moreover, when some air conditioners are changed to downward air delivery through the air duct, the cooling air is blown directly onto the human body, causing great discomfort to the human body. Therefore, the existing ducted air conditioners have the problem of poor air delivery effect. Summary of the Invention

[0004] The main purpose of the present invention is to provide a fan structure to solve the problem of poor air outlet effect of the duct fan in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a fan structure is provided, including: a casing, the casing having a accommodating chamber, a first air outlet and a second air outlet; the accommodating chamber is connected to the first air outlet and the second air outlet respectively; a volute, the volute has a turbine chamber, the volute has an air inlet and an air outlet connected to the turbine chamber; an air outlet mechanism, the air outlet mechanism includes a first exhaust port connected to the first air outlet and a second exhaust port connected to the second air outlet; a return air component, the return air component is used to block the air inlet, and the position of the return air component can be adjusted; the return air component has a first return air position located between the air inlet and the first air outlet, and the return air component has a second return air position located between the air inlet and the second air outlet.

[0006] Furthermore, the air outlet mechanism includes an air duct component, which is connected to the volute; the first exhaust port and the second exhaust port are both arranged on the air duct component; the air duct component has a circulation channel, which is connected to the air outlet, the first exhaust port and the second exhaust port.

[0007] Furthermore, the air outlet mechanism includes a baffle component, which includes: a connecting part, which is relatively rotatably connected to the air duct component; a blocking part, which is connected to the connecting part, and the blocking part is used to abut against the volute; when the return air component is in the first return air position, the blocking part closes the second exhaust port; when the return air component is in the second return air position, the blocking part closes the first exhaust port.

[0008] Furthermore, the air outlet mechanism includes a fixing component connected to the casing; the fixing component includes a placement cavity for accommodating the air duct component; the fixing component includes a avoidance port for avoiding the first exhaust port and the second exhaust port.

[0009] Furthermore, the air outlet mechanism includes a first air outlet mechanism and a second air outlet mechanism, and the first air outlet mechanism and the second air outlet mechanism are respectively located on opposite sides of the volute; there are two air outlets, and the two air outlets correspond to the first air outlet mechanism and the second air outlet mechanism respectively; the first air outlet mechanism and the second air outlet mechanism respectively have a first exhaust port and a second exhaust port.

[0010] Furthermore, the return air component includes: an air outlet baffle, which is rotatably connected to the volute and arranged opposite to the air outlet; and a return air baffle, which is connected to the air outlet baffle and arranged opposite to the air outlet.

[0011] Furthermore, the air outlet baffle extends along an arc; and / or the return air baffle is a partial circular structure.

[0012] Furthermore, the air outlet mechanism includes: a movable portion, the movable portion is connected to the housing so as to be relatively movable; a first connecting plate, the first connecting plate is connected to the movable portion; and a second connecting plate, the second connecting plate is connected to the movable portion.

[0013] Among them, when the return air component is in the first return air position, the second connecting plate abuts against the volute to close the second exhaust port, and the first connecting plate and the volute are arranged at intervals to form a first exhaust port between the first connecting plate and the volute; when the return air component is in the second return air position, the first connecting plate abuts against the volute to close the first exhaust port, and the first connecting plate and the volute are arranged at intervals to form a second exhaust port between the first connecting plate and the volute.

[0014] Furthermore, the first air outlet and the second air outlet are respectively located on opposite sides of the air outlet mechanism; and / or, the casing includes a first plate body and a second plate body, and the first plate body and the second plate body are arranged perpendicular to each other; the first air outlet is arranged on the first plate body, and the second air outlet is arranged on the second plate body; and / or, the fan structure also includes a heat exchange component, and the heat exchange component is arranged at the first air outlet, so that the airflow in the accommodating cavity passes through the heat exchange component and is discharged from the first air outlet.

[0015] Furthermore, the fan structure also includes a guide component, which includes: a first guide plate, which is used to guide the airflow flowing out of the first exhaust port to the first air port; a second guide plate, which is connected to one end of the first guide plate close to the second air port, and is used to guide the airflow flowing out of the second exhaust port to the second air port.

[0016] According to the technical solution of the present invention, the fan structure includes a casing, the casing having a accommodating chamber, a first air outlet and a second air outlet; the accommodating chamber is connected to the first air outlet and the second air outlet respectively; a volute, the volute has a turbine chamber, and the volute has an air inlet and an air outlet connected to the turbine chamber; an air outlet mechanism, the air outlet mechanism includes a first exhaust port connected to the first air outlet and a second exhaust port connected to the second air outlet; a return air component, the return air component is used to block the air inlet, and the position of the return air component can be adjusted; the return air component has a first return air position located between the air inlet and the first air outlet, and the return air component has a second return air position located between the air inlet and the second air outlet. With the above arrangement, when the return air component is in the first return air position, the return air component is located between the air inlet and the first air outlet, blocking the external air flow from entering from the first air outlet, allowing the air flow to enter from the second air outlet and be discharged from the first air outlet; when the return air component is in the second return air position, the return air component is located between the air inlet and the second air outlet, blocking the external air flow from entering from the second air outlet, allowing the air flow to enter from the first air outlet and be discharged from the second air outlet, and setting the first air outlet and the second air outlet in appropriate positions, so as to achieve the effect of cold air being discharged from the side and hot air being discharged downward, solving the problem of poor air outlet effect of the duct machine in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A schematic diagram showing the internal structure of an embodiment of a fan structure of the present invention is shown;

[0019] Figure 2 A schematic structural diagram of the fan structure of the present invention is shown;

[0020] Figure 3 A schematic structural diagram showing the return air component of the fan structure of the present invention is shown in the first return air position;

[0021] Figure 4 A schematic structural diagram showing the return air component of the fan structure of the present invention is shown in the second return air position;

[0022] Figure 5 A schematic diagram showing the state of the fan structure of the present invention when achieving side air outlet;

[0023] Figure 6 A schematic diagram showing the state of the fan structure of the present invention when achieving downward air discharge;

[0024] Figure 7 A schematic structural diagram showing a first embodiment of an air outlet mechanism of a fan structure according to the present invention is shown;

[0025] Figure 8 A schematic structural diagram showing an embodiment of a return air component of a fan structure of the present invention is shown;

[0026] Figure 9 A schematic structural diagram of a second embodiment of an air outlet mechanism of a fan structure according to the present invention for achieving side air outlet is shown;

[0027] Figure 10 A schematic structural diagram of a second embodiment of an air outlet mechanism of a fan structure according to the present invention when achieving downward air outlet is shown;

[0028] Figure 11 A schematic structural diagram showing a third embodiment of the air outlet mechanism of the fan structure of the present invention is shown;

[0029] Figure 12 A schematic structural diagram showing another embodiment of the return air component of the fan structure of the present invention in the first return air position is shown;

[0030] Figure 13 The diagram shows the structure of another embodiment of the return air component of the fan structure of the present invention in the second return air position.

[0031] The above drawings include the following reference numerals:

[0032] 1. Casing; 11. Accommodating chamber; 12. First air outlet; 13. Second air outlet; 101. First plate; 102. Second plate; 2. Volute; 22. Air inlet; 23. Air outlet; 3. Air outlet mechanism; 31. First exhaust port; 32. Second exhaust port; 33. Air duct component; 35. Baffle component; 351. Connecting portion; 352. Blocking portion; 37. Fixed component; 301. Movable portion; 302. First connecting plate; 303. Second connecting plate; 4. Return air component; 41. Outlet baffle; 42. Return air baffle; 5. Heat exchange component; 6. Drainage component; 61. First drain plate; 62. Second drain plate. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] See also Figures 1 to 13The fan structure of this embodiment includes: a casing 1, the casing 1 has a accommodating chamber 11, a first air outlet 12 and a second air outlet 13; the accommodating chamber 11 is connected to the first air outlet 12 and the second air outlet 13 respectively; a volute 2, the volute 2 has a turbine chamber, and the volute 2 has an air inlet 22 and an air outlet 23 connected to the turbine chamber; an air outlet mechanism 3, the air outlet mechanism 3 includes a first exhaust port 31 connected to the first air outlet 12 and a second exhaust port 32 connected to the second air outlet 13; a return air component 4, the return air component 4 is used to block the air inlet 22, and the position of the return air component 4 can be adjusted; the return air component 4 has a first return air position located between the air inlet 22 and the first air outlet 12, and the return air component 4 has a second return air position located between the air inlet 22 and the second air outlet 13.

[0035] With the above arrangement, when the return air component 4 is in the first return air position, the return air component 4 is located between the air inlet 22 and the first air outlet 12, blocking the external air flow from entering from the first air outlet 12, allowing the air flow to enter from the second air outlet 13 and be discharged from the first air outlet 12; when the return air component 4 is in the second return air position, the return air component 4 is located between the air inlet 22 and the second air outlet 13, blocking the external air flow from entering from the second air outlet 13, allowing the air flow to enter from the first air outlet 12 and be discharged from the second air outlet 13, and setting the first air outlet 12 and the second air outlet 13 in appropriate positions, so as to achieve the effect of cold air being discharged from the side and hot air being discharged downward, thereby solving the problem of poor air outlet effect of the duct machine in the prior art.

[0036] Specifically, in the fan structure of this embodiment, the return air component 4 can realize the change of the return air direction of the unit, and the air outlet mechanism 3 can realize the change of the air outlet direction of the unit. By adjusting the return air component 4 and the air outlet mechanism 3, reverse airflow can be achieved, and by cooperating with the casing 1 to guide the air, side blowing of cold air can be achieved.

[0037] In the fan structure of this embodiment, see Figure 7 The air outlet mechanism 3 includes an air duct component 33, which is connected to the volute 2; the first exhaust port 31 and the second exhaust port 32 are both arranged on the air duct component 33; the air duct component 33 has a circulation channel, which is connected to the air outlet 23, the first exhaust port 31 and the second exhaust port 32.

[0038] Specifically, in some embodiments, there are preset angles between the arrangement directions of the first exhaust port 31 and the second exhaust port 32 and the airflow discharge direction of the air outlet 23, so that the exhaust of the fan structure is smoother.

[0039] See also Figures 1 to 7In the fan structure of this embodiment, the air outlet mechanism 3 includes a baffle member 35, which includes a connecting portion 351 that is relatively rotatably connected to the air duct member 33; a blocking portion 352 that is connected to the connecting portion 351 and is configured to abut against the volute 2. When the return air component 4 is in the first return air position, the blocking portion 352 closes the second exhaust port 32; when the return air component 4 is in the second return air position, the blocking portion 352 closes the first exhaust port 31. Thus, by closing the first exhaust port 31 or the second exhaust port 32 through the baffle member 35, the airflow can be discharged from the air duct member 33 in one direction, thereby improving the exhaust efficiency of the fan structure.

[0040] See also Figure 4 、 Figure 8 In the fan structure of this embodiment, the air outlet mechanism 3 includes a fixing component 37, which is connected to the casing 1; the fixing component 37 includes a placement cavity for accommodating the air duct component 33; the fixing component 37 includes a avoidance port for avoiding the first exhaust port 31 and the second exhaust port 32.

[0041] With the above arrangement, the installation of the volute 2 and the air duct component 33 can be made more secure by providing the fixing component 37. Moreover, the fixing component 37 can also achieve a sealed connection with the casing 1, thereby improving the exhaust efficiency of the fan structure.

[0042] In the fan structure of this embodiment, see Figure 11 The air outlet mechanism 3 includes a first air outlet mechanism 3 and a second air outlet mechanism 3, which are located on opposite sides of the volute 2. There are two air outlets 23, corresponding to the first air outlet mechanism 3 and the second air outlet mechanism 3, respectively. The first air outlet mechanism 3 and the second air outlet mechanism 3 each have a first exhaust port 31 and a second exhaust port 32. This allows the fan structure to deliver air more evenly, thereby improving the exhaust efficiency of the fan structure.

[0043] See also Figure 7 、 Figure 8 In the fan structure of this embodiment, the return air component 4 includes: an air outlet baffle 41, which is rotatably connected to the volute 2 and is arranged opposite to the air outlet 23; a return air baffle 42, which is connected to the air outlet baffle 41 and is arranged opposite to the air inlet 22.

[0044] Specifically, in some embodiments, the air outlet baffle 41 is rotatably connected to the volute 2 , thereby controlling the movement of the return air component 4 to reach the first return air position or the second return air position.

[0045] In some embodiments, the air outlet baffle 41 is disposed opposite to the air outlet 23 , so that the air outlet baffle 41 can block the air flow from being discharged from the air outlet 23 , thereby improving the air outlet efficiency.

[0046] In some embodiments, the return air baffle 42 is disposed opposite to the air inlet 22 to block external air flow from entering the air inlet 22 , thereby achieving one-way air intake from the first air outlet 12 or the second air outlet 13 .

[0047] In the fan structure of this embodiment, see Figure 8 , the air outlet baffle 41 extends along an arc; and / or, the return air baffle 42 is a partial circular structure.

[0048] See also Figure 9 、 Figure 10 In the fan structure of this embodiment, the air outlet mechanism 3 includes: a movable part 301, which is connected to the casing 1 so as to be movably relative to the movable part 301; a first connecting plate 302, which is connected to the movable part 301; and a second connecting plate 303, which is connected to the movable part 301; wherein, when the return air component 4 is in the first return air position, the second connecting plate 303 abuts against the volute 2 to close the second exhaust port 32, and the first connecting plate 302 is arranged at a distance from the volute 2 to form a first exhaust port 31 between the first connecting plate 302 and the volute 2; when the return air component 4 is in the second return air position, the first connecting plate 302 abuts against the volute 2 to close the first exhaust port 31, and the first connecting plate 302 is arranged at a distance from the volute 2 to form a second exhaust port 32 between the first connecting plate 302 and the volute 2.

[0049] The above arrangement makes the fan structure simpler.

[0050] Specifically, when the unit is working, the direction of the air intake of the casing 1 needs to be opposite to the direction of the air outlet, that is, when the air outlet is close to the direction of the heat exchange component 5, the air intake is away from the direction of the heat exchange component 5; when the air outlet is away from the direction of the heat exchange component 5, the air intake is close to the direction of the heat exchange component 5.

[0051] In the fan structure of this embodiment, the first air outlet 12 and the second air outlet 13 are respectively located on opposite sides of the air outlet mechanism 3; and / or, the casing 1 includes a first plate body 101 and a second plate body 102, and the first plate body 101 and the second plate body 102 are arranged perpendicular to each other; the first air outlet 12 is arranged on the first plate body 101, and the second air outlet 13 is arranged on the second plate body 102; and / or, the fan structure also includes a heat exchange component 5, and the heat exchange component 5 is arranged at the first air outlet 12, so that the airflow in the accommodating cavity 11 passes through the heat exchange component 5 and is discharged from the first air outlet 12.

[0052] Specifically, the return air component 4 is arranged on the air inlet side of the centrifugal fan and has the function of controlling the change of the suction direction. This mechanism can realize the control of the suction side change so that the suction side is close to the heat exchange component 5 or the suction side is away from the heat exchange component 5.

[0053] In the fan structure of this embodiment, see Figure 11 The fan structure also includes a guide member 6, which includes a first guide plate 61 for guiding the airflow flowing out of the first exhaust port 31 to the first air port 12; and a second guide plate 62 connected to the end of the first guide plate 61 near the second air port 13. The second guide plate 62 is used to guide the airflow flowing out of the second exhaust port 32 to the second air port 13. In this way, the direction of the airflow flowing out of the first exhaust port 31 and the second exhaust port 32 can be controlled, thereby making the air discharge more efficient.

[0054] Specifically, in order to reduce the air outlet resistance, a flow guiding component 6 may be provided in the outflow direction, thereby reducing the outflow impact loss and increasing the air volume.

[0055] Example 1:

[0056] See also Figure 1 In this embodiment, the centrifugal fan is combined with the volute 2 with double volute tongues to form two-way air outlet.

[0057] Air outlets are respectively provided on both sides of the volute 2 , and a mechanism for controlling airflow conversion (i.e., a baffle component 35 ) is provided to control the direction of the outlet airflow to approach the heat exchange component 5 or away from the heat exchange component 5 .

[0058] Example 2:

[0059] See also Figure 3 、 Figure 4 In this embodiment, the air outlet mechanism 3 is a swing valve mechanism.

[0060] Example 3:

[0061] See also Figure 9 、 Figure 10 In this embodiment, the air outlet mechanism 3 is an integrally rotating mechanism.

[0062] Example 4:

[0063] See also Figure 8 In this embodiment, the return air component 4 is a rotating structure with an arc-shaped plate.

[0064] Embodiment 5:

[0065] See also Figure 12 、 Figure 13In this embodiment, the return air component 4 can be a rotary valve mechanism. The purpose of blocking the air inlet 22 is achieved by rotating the return air component 4.

[0066] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0067] The fan structure of the present invention includes a casing 1, the casing 1 has a accommodating cavity 11, a first air outlet 12 and a second air outlet 13; the accommodating cavity 11 is connected to the first air outlet 12 and the second air outlet 13 respectively; a volute 2, the volute 2 has a turbine cavity, and the volute 2 has an air inlet 22 and an air outlet 23 connected to the turbine cavity; an air outlet mechanism 3, the air outlet mechanism 3 includes a first exhaust port 31 connected to the first air outlet 12 and a second exhaust port 32 connected to the second air outlet 13; a return air component 4, the return air component 4 is used to block the air inlet 22, and the position of the return air component 4 can be adjusted; the return air component 4 has a first return air position located between the air inlet 22 and the first air outlet 12, and the return air component 4 has a second return air position located between the air inlet 22 and the second air outlet 13. With the above arrangement, when the return air component 4 is in the first return air position, the return air component 4 is located between the air inlet 22 and the first air outlet 12, blocking the external air flow from entering from the first air outlet 12, allowing the air flow to enter from the second air outlet 13 and be discharged from the first air outlet 12; when the return air component 4 is in the second return air position, the return air component 4 is located between the air inlet 22 and the second air outlet 13, blocking the external air flow from entering from the second air outlet 13, allowing the air flow to enter from the first air outlet 12 and be discharged from the second air outlet 13, and setting the first air outlet 12 and the second air outlet 13 in appropriate positions, so as to achieve the effect of cold air being discharged from the side and hot air being discharged downward, thereby solving the problem of poor air outlet effect of the duct machine in the prior art.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0070] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0073] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fan structure, characterized in that: include: A casing (1), the casing (1) having a receiving chamber (11), a first air outlet (12), and a second air outlet (13); the receiving chamber (11) is in communication with the first air outlet (12) and the second air outlet (13), respectively; A volute (2), wherein the volute (2) has a turbine chamber, and the volute (2) has an air inlet (22) and an air outlet (23) communicating with the turbine chamber; An air outlet mechanism (3), the air outlet mechanism (3) comprising a first exhaust port (31) communicating with the first air port (12) and a second exhaust port (32) communicating with the second air port (13); an air return component (4), the air return component (4) being used to block the air inlet (22), the position of the air return component (4) being adjustable; the air return component (4) having a first air return position located between the air inlet (22) and the first air outlet (12), and the air return component (4) having a second air return position located between the air inlet (22) and the second air outlet (13); The return air component (4) comprises: an air outlet baffle (41), the air outlet baffle (41) being rotatably connected to the volute (2), and the air outlet baffle (41) being arranged opposite to the air outlet (23); The return air baffle (42) is connected to the air outlet baffle (41), and the return air baffle (42) is arranged opposite to the air inlet (22).

2. The fan structure according to claim 1, characterized in that: The air outlet mechanism (3) comprises an air duct component (33), the air duct component (33) being connected to the volute (2); the first exhaust port (31) and the second exhaust port (32) being both arranged on the air duct component (33); and a circulation channel being provided in the air duct component (33), the circulation channel being connected to the air outlet (23), the first exhaust port (31) and the second exhaust port (32).

3. The fan structure according to claim 2, characterized in that: The air outlet mechanism (3) comprises a baffle component (35), and the baffle component (35) comprises: a connecting portion (351), the connecting portion (351) being rotatably connected to the air duct component (33); A blocking portion (352) is connected to the connecting portion (351), and the blocking portion (352) is used to abut against the volute (2); when the return air component (4) is in the first return air position, the blocking portion (352) closes the second exhaust port (32); when the return air component (4) is in the second return air position, the blocking portion (352) closes the first exhaust port (31).

4. The fan structure according to claim 3, characterized in that: The air outlet mechanism (3) comprises a fixing component (37), the fixing component (37) being connected to the housing (1); the fixing component (37) comprising a placement cavity for accommodating the air duct component (33); and the fixing component (37) comprising a relief opening for avoiding the first exhaust port (31) and the second exhaust port (32).

5. The fan structure according to claim 4, characterized in that: The fixing component (37) is sealed and connected to the housing (1).

6. The fan structure according to claim 1, characterized in that: The air outlet mechanism (3) comprises a first air outlet mechanism and a second air outlet mechanism, wherein the first air outlet mechanism and the second air outlet mechanism are respectively located on opposite sides of the volute (2); there are two air outlets (23), and the two air outlets (23) correspond to the first air outlet mechanism and the second air outlet mechanism respectively; the first air outlet mechanism and the second air outlet mechanism respectively have a first exhaust port (31) and a second exhaust port (32).

7. The fan structure according to claim 1, characterized in that: The air outlet baffle (41) extends along an arc; and / or, The return air baffle (42) is a partially circular structure.

8. The fan structure according to claim 1, characterized in that: The air outlet mechanism (3) comprises: A movable portion (301), the movable portion (301) being connected to the housing (1) in a relatively movable manner; a first connecting plate (302), the first connecting plate (302) being connected to the movable portion (301); a second connecting plate (303), the second connecting plate (303) being connected to the movable portion (301); Wherein, when the return air component (4) is in the first return air position, the second connecting plate (303) abuts against the volute (2) to close the second exhaust port (32), and the first connecting plate (302) and the volute (2) are spaced apart to form the first exhaust port (31) between the first connecting plate (302) and the volute (2); when the return air component (4) is in the second return air position, the first connecting plate (302) abuts against the volute (2) to close the first exhaust port (31), and the first connecting plate (302) and the volute (2) are spaced apart to form the second exhaust port (32) between the first connecting plate (302) and the volute (2).

9. The fan structure according to claim 1, characterized in that: The first air outlet (12) and the second air outlet (13) are respectively located on opposite sides of the air outlet mechanism (3); and / or, The housing (1) comprises a first plate (101) and a second plate (102), wherein the first plate (101) and the second plate (102) are arranged perpendicular to each other; the first air outlet (12) is arranged on the first plate (101), and the second air outlet (13) is arranged on the second plate (102); and / or, The fan structure further comprises a heat exchange component (5), wherein the heat exchange component (5) is arranged at the first air outlet (12) so that the air flow in the accommodating cavity (11) passes through the heat exchange component (5) and is discharged from the first air outlet (12).

10. The fan structure according to claim 1, characterized in that: The fan structure further comprises a flow guiding component (6), and the flow guiding component (6) comprises: a first guide plate (61), the first guide plate (61) being used to guide the airflow flowing out of the first exhaust port (31) to the first air port (12); A second guide plate (62), the second guide plate (62) is connected to one end of the first guide plate (61) close to the second air outlet (13), and the second guide plate (62) is used to guide the airflow flowing out of the second exhaust port (32) to the second air outlet (13).

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