Air outlet structure and fan

Abstract

The present invention discloses an air outlet structure and a fan, the air outlet structure comprising: a fan, a mounting shell and a heating element, the mounting shell being provided with a mounting cavity for mounting the fan and a first air outlet hole and an air inlet hole both connected to the mounting cavity, the fan being arranged in the mounting cavity; the heating element comprising a first heating element and a second heating element, the first heating element and / or the second heating element being provided with a second air outlet hole, the first heating element and the second heating element both being movably arranged in the mounting shell; wherein the heating element comprises a first working state and a second working state, when the heating element is in the first working state, the first heating element and the second heating element cooperate to close the first air outlet hole, and the second air outlet hole is connected to the mounting cavity, when the heating element is in the second working state, the first heating element and the second heating element cooperate to open the first air outlet hole. In the air outlet structure, the heating element can be removed in the cold wind state, thereby preventing the heating element from affecting the air volume and air speed.

Description

Technical Field

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

[0002] A tower fan is a type of fan. It forms a three-dimensional exchange system between indoor and outdoor air based on the principle of airflow. A tower fan usually "throws" wind out through a cross-flow fan to form an airflow. That is, the rotation of the wind wheel creates wind pressure, which generates centrifugal wind force and finally transmits the wind force through the internal wind guide wall. Compared with traditional fans, tower fans have softer air output and can better promote air circulation in the room. In order to make tower fans able to be used in both winter and summer, heating and cooling fans have appeared on the market. When a heating and cooling fan is needed to output hot air, the wind can be heated by the heating element; when a heating and cooling fan is needed to output cold air, it is only necessary to stop heating the heating element.

[0003] However, traditional hot and cold fans have problems with low air volume and slow air speed in the cold air state, resulting in a poor user experience. Summary of the Invention

[0004] Based on this, in order to address the problems of low air volume and slow air speed in the cold air state of traditional hot and cold fans, resulting in poor user experience, an air outlet structure and fan are proposed. The air outlet structure can remove the heating element in the cold air state, thereby avoiding the influence of the heating element on the air volume and air speed. The fan includes the above-mentioned air outlet structure. Therefore, when the fan is in the cold air state, the air volume is large and the air speed is fast.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to an air outlet structure, comprising: an installation shell, the installation shell is provided with an installation cavity for installing a fan and a first air outlet hole and an air inlet hole that are both connected to the installation cavity; and a heating element, the heating element includes a first heating element and a second heating element, the first heating element and / or the second heating element are provided with a second air outlet hole, and the first heating element and the second heating element are both movable relative to the installation shell; wherein, the heating element includes a first working state and a second working state, when the heating element is in the first working state, the first heating element and the second heating element cooperate to close the first air outlet hole, and the second air outlet hole is connected to the installation cavity, when the heating element is in the second working state, the first heating element and the second heating element cooperate to open the first air outlet hole.

[0007] When the above-mentioned air outlet structure is in use, the fan draws air into the installation cavity through the air inlet hole and discharges the air along the first air outlet hole or the second air outlet hole according to the working state of the heating element. When the heating element is in the first working state, the air in the installation cavity is discharged along the second air outlet hole. The first working state can be that the first heating element and the second heating element are in a heating state, and the wind discharged along the second air outlet hole is hot air; when the heating element is in the second working state, the air in the installation cavity is discharged along the first air outlet hole. The second working state can be that the first heating element and the second heating element are in a heating state. The heat body is in a state of stopping heating, and the wind discharged along the first air outlet hole is cold air or air at normal temperature; furthermore, traditional heating and cooling fans generally place the heat body (such as PTC thermistor) directly in front of the air inlet or outlet grille, which will cause the air volume and air speed to be affected when the fan is set to cold air mode. In the present application, when the fan is used to blow cold air, the first heating body and the second heating body can be driven to move away from the first air outlet hole, so that the first heating body and the second heating body will not reduce the air volume and air speed, thereby improving the air volume and air speed relative to traditional fans.

[0008] The technical solution is further described below:

[0009] In one embodiment, the air outlet structure further includes a driving mechanism, and the driving mechanism is used to drive the first heating element and the second heating element to move in a direction of opening or closing the first air outlet hole.

[0010] In one embodiment, the driving mechanism includes a first connecting member, a second connecting member and a rotational power output assembly, the first connecting member and the second connecting member are both rotatable relative to the mounting shell, one end of the first connecting member is connected to the first heating element, the other end of the first connecting member is connected to the rotational power output assembly, one end of the second connecting member is connected to the second heating element, the other end of the second connecting member is connected to the rotational power output assembly, the first connecting member and the second connecting member are cross-arranged, and the rotational power output assembly is used to drive the first connecting member and the second connecting member to rotate in a direction of approaching or moving away from each other.

[0011] In one embodiment, the rotational power output assembly includes a driving gear, a first rack and a second rack, the power output end of the first rack is connected to the first connecting member, the power input end of the first rack is meshed with the driving gear, the first rack is arranged at an angle to the first connecting member, the power output end of the second rack is connected to the second connecting member, the second rack is arranged at an angle to the second connecting member, the power input end of the second rack is meshed with the driving gear, and the driving gear is arranged between the first rack and the second rack.

[0012] In one embodiment, the first rack and the second rack are both arc-shaped.

[0013] In one embodiment, the driving mechanism includes a connecting shaft, the connecting shaft is disposed in the mounting cavity, and the first connecting member and the second connecting member are both rotatably disposed on the connecting shaft.

[0014] In one embodiment, the first connecting member includes a first end and a second end, and the first connecting member is further provided with a first mounting hole for the connecting shaft to pass through, and the first mounting hole is arranged between the first end and the second end, the first end is connected to the first heating element, and the second end is connected to the rotational power output assembly, the second connecting member includes a third end and a fourth end, the third end is connected to the second heating element, and the fourth end is connected to the rotational power output assembly, and the second connecting member is further provided with a second mounting hole for the connecting shaft to pass through, and the second mounting hole is arranged between the third end and the fourth end.

[0015] In one embodiment, the mounting shell further includes a guide structure, which is disposed in the mounting cavity, and the first heating element and the second heating element are both movably disposed on the guide structure.

[0016] In one embodiment, the guide structure includes a guide groove and a limit body arranged in the installation cavity, the limit body is arranged in the guide groove, and the limit body is arranged between the first heating element and the second heating element. When the heating element is in the first working state, the first heating element and the second heating element abut against the limit body.

[0017] In one embodiment, the mounting shell is cylindrical, the cross section of the first heating element is a first arc-shaped surface, and the cross section of the second heating element is a second arc-shaped surface.

[0018] In one embodiment, the first heating element, the second heating element and the mounting housing are coaxially arranged.

[0019] In one embodiment, the air outlet structure also includes a heating device for heating the first heating element and the second heating element. When the heating element is in a first working state, the heating device heats the first heating element and the second heating element. When the heating element is in a second working state, the heating device stops heating the first heating element and the second heating element.

[0020] On the other hand, the present application also relates to a fan, comprising the air outlet structure in any of the above embodiments, and further comprising a blower, wherein the blower is arranged in the installation cavity.

[0021] When the above-mentioned fan is in use, the fan draws air into the installation cavity through the air inlet hole and discharges the air along the first air outlet hole or the second air outlet hole according to the working state of the heating element. When the heating element is in the first working state, the air in the installation cavity is discharged along the second air outlet hole. The first working state can be that the first heating element and the second heating element are in a heating state, and the wind discharged along the second air outlet hole is hot air; when the heating element is in the second working state, the air in the installation cavity is discharged along the first air outlet hole. The second working state can be that the first heating element and the second heating element are in a heating state. The body is in a state of stopping heating, and the wind discharged along the first air outlet hole is cold air or air at room temperature; further, traditional heating and cooling fans generally place a heating element (such as a PTC thermistor) directly in front of the air inlet or outlet grille, which will affect the air volume and air speed when the fan is set to cold air mode. In the present application, when the fan is used to blow cold air, the first heating element and the second heating element can be driven to move away from the first air outlet hole, so that the first heating element and the second heating element will not reduce the air volume and air speed, thereby improving the air volume and air speed relative to traditional fans. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure in which the air outlet structure is removed from the mounting housing;

[0023] Figure 2 for Figure 1 A partial enlarged schematic diagram;

[0024] Figure 3 A schematic diagram of the housing installation.

[0025] Description of reference numerals:

[0026] 10. Air outlet structure; 100. Fan; 200. Mounting shell; 210. Mounting cavity; 220. First air outlet hole; 300. Heat-generating element; 302. Second air outlet hole; 310. First heating element; 320. Second heating element; 400. Driving mechanism; 410. First connecting member; 412. First end; 414. Second end; 420. Second connecting member; 422. Third end; 424. Fourth end; 430. First rack; 440. Second rack; 450. Driving gear; 460. Connecting shaft; 470. Motor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0028] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] It is necessary to point out that when an element is referred to as being “fixed to” another element, the two elements may be integral or detachably connected.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Furthermore, it should be understood that in this embodiment, the positional relationships indicated by terms such as "lower," "upper," "front," "back," "left," "right," "inner," "outer," "top," "bottom," "one side," "the other side," "one end," and "the other end" are based on the positional relationships shown in the accompanying drawings; and terms such as "first" and "second" are used to distinguish different structural components. These terms are merely for the purpose of facilitating and simplifying the description of the present invention and are not to be construed as limiting the present invention.

[0032] like Figures 1 to 3As shown, a fan in one embodiment includes an air outlet structure 10 and a fan 100, the air outlet structure 10 includes a mounting shell 200 and a heating element 300, the mounting shell 200 is provided with a mounting cavity 210 for mounting the fan 100 and a first air outlet hole 220 and an air inlet hole both connected to the mounting cavity 210; the heating element 300 includes a first heating element 310 and a second heating element 320, the first heating element 310 and / or the second heating element 320 are provided with a second air outlet hole 302, the first heating element 310 and the second heating element 320 are provided with a second air outlet hole 302, The bodies 320 can move relative to the mounting shell 200; wherein, the heating element 300 includes a first working state and a second working state. When the heating element 300 is in the first working state, the first heating element 310 and the second heating element 320 cooperate to close the first air outlet hole 220, and the second air outlet hole 302 is connected to the mounting cavity 210. When the heating element 300 is in the second working state, the first heating element 310 and the second heating element 320 cooperate to open the first air outlet hole 220, and the fan 100 is arranged in the mounting cavity 210.

[0033] When the above-mentioned fan is in use, the fan 100 draws air into the installation cavity 210 through the air inlet hole and discharges the air along the first air outlet hole 220 or along the second air outlet hole 302 according to the working state of the heating element 300. When the heating element 300 is in the first working state, the air in the installation cavity 210 is discharged along the second air outlet hole 302. The first working state can be that the first heating element 310 and the second heating element 320 are in a heating state. At this time, the wind discharged along the second air outlet hole 302 is hot air; when the heating element 300 is in the second working state, the air in the installation cavity 210 is discharged along the first air outlet hole 220. The second working state can be that the first heating element 310 and the second heating element 320 are in a heating state. 310 and the second heating element 320 are in a state of stopping heating, and the wind discharged along the first air outlet hole 220 is cold air or air at room temperature; further, traditional heating and cooling fans generally place heating elements (such as PTC thermistors) directly in front of the air inlet grille or the air outlet grille, which will affect the air volume and air speed when the fan is set to cold air mode. In the present application, when the fan is used to blow cold air, the first heating element 310 and the second heating element 320 can be driven to move away from the first air outlet hole 220, so that the first heating element 310 and the second heating element 320 will not reduce the air volume and air speed, thereby improving the air volume and air speed relative to traditional fans.

[0034] It is necessary to point out that the cooperation between the first heating element 310 and the second heating element 320 to close the first air outlet hole 220 does not necessarily require the first air outlet hole 220 to be completely closed. A gap may exist between the first heating element 310 and the second heating element 320 and the side wall of the mounting shell 200 located at the first air outlet hole 220.

[0035] On the basis of the above embodiment, in order to enable the air outlet structure 10 to blow cold air or hot air, the air outlet structure 10 also includes a heating device for heating the first heating element 310 and the second heating element 320. When the heating element 300 is in the first working state, the heating device heats the first heating element 310 and the second heating element 320. At this time, after the air in the installation cavity 210 exchanges heat with the first heating element 310 and the second heating element 320 and heats up, the air discharged along the second air outlet hole 302 is hot air; when the heating element 300 is in the second working state, the heating device stops heating the first heating element 310 and the second heating element 320. At this time, the air discharged along the first air outlet hole 220 is cold air or air at room temperature. Specifically, the heating device can be a power supply, and the first heating element 310 and the second heating element 320 can be a heating sheet or a heating plate with a thermocouple wire, or a heating sheet or a heating plate with a thermistor.

[0036] Specifically, in order to automatically drive the first heating element 310 and the second heating element 320 to move according to the usage status, in this embodiment, the air outlet structure 10 also includes a driving mechanism 400, which is used to drive the first heating element 310 and the second heating element 320 to move in the direction of opening or closing the first air outlet hole 220.

[0037] Of course, there can be multiple driving methods to drive the first heating element 310 and the second heating element 320 to move in the direction of opening or closing the first air outlet hole 220. Specifically in this embodiment, the driving mechanism 400 includes a first connecting member 410, a second connecting member 420 and a rotational power output assembly. The first connecting member 410 and the second connecting member 420 can both rotate relative to the mounting shell 200. One end of the first connecting member 410 is connected to the first heating element 310, and the other end of the first connecting member 410 is connected to the rotational power output assembly. One end of the second connecting member 420 is connected to the second heating element 320, and the other end of the second connecting member 420 is connected to the rotational power output assembly. The first connecting member 410 and the second connecting member 420 are cross-arranged, and the rotational power output assembly is used to drive The first connecting member 410 and the second connecting member 420 are driven to rotate in the direction of approaching or moving away from each other. In this way, the first connecting member 410 and the second connecting member 420 are driven to rotate by the rotating power output component, so that the first connecting member 410 drives the first heating element 310 to rotate, and the second connecting member 420 drives the second heating element 320 to rotate. Furthermore, since the first connecting member 410 and the second connecting member 420 are cross-arranged, when the rotating power output component drives the first connecting member 410 and the second connecting member 420 to rotate in the direction of approaching or moving away from each other, the first heating element 310 and the second heating element 320 also rotate in the direction of approaching or moving away from each other. In this way, the first heating element 310 and the second heating element 320 can synchronously open or close the first air outlet hole 220.

[0038] like Figure 1 and Figure 2 As shown, further, in order to realize the rotational power output assembly to drive the first connecting member 410 and the second connecting member 420 to rotate in the direction of approaching or moving away from each other, in this embodiment, the rotational power output assembly includes a driving gear 450, a first rack 430 and a second rack 440. The power output end of the first rack 430 is connected to the first connecting member 410, and the power input end of the first rack 430 is meshed with the driving gear 450. The first rack 430 is arranged at an angle to the first connecting member 410, and the power output end of the second rack 440 is connected to the second connecting member 420. The second rack 440 is arranged at an angle to the second connecting member 420, and the power input end of the second rack 440 is meshed with the driving gear 450, and the driving gear 450 is arranged between the first rack 430 and the second rack 440. In this way, when the driving gear 450 rotates, the first rack 430 is driven to move by the driving gear 450, and the first rack 430 is driven to move. Since the rack 430 is set at an angle to the first connecting member 410, the first rack 430 can drive the first connecting member 410 to rotate while moving, thereby driving the first heating element 310 to rotate; similarly, the second rack 440 is driven to move by the driving gear 450. Since the second rack 440 is set at an angle to the second connecting member 420, the second rack 440 can drive the second connecting member 420 to rotate while moving, thereby driving the second heating element 320 to rotate; in this embodiment, the first rack 430 and the second rack 440 are arranged along the axial height of the driving gear 450, and the first connecting member 410 and the second connecting member 420 are also arranged along the axial height of the driving gear 450. In this way, the first connecting member 410 and the second connecting member 420 are arranged on both sides of the driving gear 450. In this way, the first connecting member 410 and the second connecting member 420 are not easily interfered with each other when rotating. In this embodiment, the driving gear 450 is driven by the motor 470.

[0039] like Figure 1 and Figure 2 As shown, further, in order to make the first connecting member 410 and the second connecting member 420, the first rack 430 and the second rack 440 both arc-shaped, thus, the general cooling and heating type tower fan is a long cylindrical structure, and the first rack 430 and the second rack 440 are designed to be arc-shaped, so that the first rack 430 and the second rack 440 can be installed more compactly in the installation cavity 210 and occupy a relatively small space.

[0040] like Figure 1 and Figure 2As shown, of course, there are many ways to achieve the rotation of the first connecting member 410 and the second connecting member 420 relative to the mounting shell 200. Specifically in this embodiment, the driving mechanism 400 includes a connecting shaft 460, and the connecting shaft 460 is arranged in the mounting cavity 210. The first connecting member 410 and the second connecting member 420 can both be rotatably passed through the connecting shaft 460.

[0041] like Figure 1 and Figure 2 As shown, further, in this embodiment, the first connecting member 410 includes a first end 412 and a second end 414, and the first connecting member 410 also has a first mounting hole for the connecting shaft 460 to pass through, the first mounting hole is arranged between the first end 412 and the second end 414, the first end 412 is connected to the first heating element 310, and the second end 414 is connected to the rotation power output assembly, the second connecting member 420 includes a third end 422 and a fourth end 424, the third end 422 is connected to the second heating element 320, and the fourth end 424 is connected to the rotation power output assembly, the second connecting member 420 also has a second mounting hole for the connecting shaft 460 to pass through, the second mounting hole is arranged between the third end 422 and the fourth end 424, so that the first connecting member 410 and the second connecting member 420 both rotate with the connecting shaft 460 as the rotation axis. In this embodiment, the connecting shaft 460 is fixed to the housing of the fan 100.

[0042] Based on any of the above embodiments, the mounting shell 200 also includes a guide structure, which is arranged in the mounting cavity 210. The first heating element 310 and the second heating element 320 can be movably arranged on the guide structure. In this way, through the guiding effect of the guide structure, the first heating element 310 and the second heating element 320 can be moved to the corresponding positions more accurately to open or close the first air outlet hole 220.

[0043] Specifically in this embodiment, the guide structure includes a guide groove and a limit body arranged in the installation cavity 210. The limit body is arranged in the guide groove, and the limit body is arranged between the first heating element 310 and the second heating element 320. When the heating element 300 is in the first working state, the first heating element 310 and the second heating element 320 are in contact with the limit body. At this time, the guide groove is arranged to enable the first heating element 310 and the second heating element 320 to move in a preset direction; further, through the limiting effect of the limit body, the first heating element 310 and the second heating element 320 can be moved to a fixed position, and then when the heating element 300 is in the first working state, the first heating element 310 and the second heating element 320 cooperate to close the first air outlet hole 220; specifically, the limit body can be a limiting protrusion or a limiting rib.

[0044] like Figure 1 and Figure 2As shown, based on any of the above embodiments, the mounting shell 200 is cylindrical, the cross-section of the first heating element 310 is a first curved surface, and the cross-section of the second heating element 320 is a second curved surface. At this time, the first heating element 310 and the second heating element 320 are both curved bodies. In this way, on the one hand, when the first heating element 310 and the second heating element 320 close the first air outlet hole 220, the first heating element 310 and the second heating element 320 can better match the shape of the first air outlet hole 220; on the other hand, when the first heating element 310 and the second heating element 320 are both curved bodies, the entire air outlet structure 10 is more beautiful. Based on this embodiment, the first heating element 310, the second heating element 320 and the mounting shell 200 are coaxially arranged. At this time, when the first heating element 310 and the second heating element 320 cover the first air outlet hole 220, the shape of the first heating element 310 and the second heating element 320 is more matched with the shape of the first air outlet hole 220.

[0045] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An air outlet structure, characterized in that: include: An installation housing is provided with an installation cavity for installing a fan and a first air outlet hole and an air inlet hole both communicating with the installation cavity; and A heating element, the heating element comprising a first heating element and a second heating element, the first heating element and / or the second heating element being provided with a second air outlet hole, and the first heating element and the second heating element being movable relative to the mounting housing; The heating element includes a first working state and a second working state. When the heating element is in the first working state, the first heating element and the second heating element cooperate to close the first air outlet hole, and the second air outlet hole is connected to the installation cavity. When the heating element is in the second working state, the first heating element and the second heating element cooperate to open the first air outlet hole. The air outlet structure also includes a driving mechanism, which is used to drive the first heating element and the second heating element to move in the direction of opening or closing the first air outlet hole; the driving mechanism includes a first connecting member, a second connecting member and a rotating power output assembly, and the first connecting member and the second connecting member can both rotate relative to the mounting shell, one end of the first connecting member is connected to the first heating element, and the other end of the first connecting member is connected to the rotating power output assembly, one end of the second connecting member is connected to the second heating element, and the other end of the second connecting member is connected to the rotating power output assembly, the first connecting member and the second connecting member are cross-arranged, and the rotating power output assembly is used to drive the first connecting member and the second connecting member to rotate in a direction of approaching or moving away from each other.

2. The air outlet structure according to claim 1, characterized in that: The rotary power output assembly includes a driving gear, a first rack and a second rack, the power output end of the first rack is connected to the first connecting member, the power input end of the first rack is meshed with the driving gear, the first rack and the first connecting member are arranged at an angle, the power output end of the second rack is connected to the second connecting member, the second rack and the second connecting member are arranged at an angle, the power input end of the second rack is meshed with the driving gear, and the driving gear is arranged between the first rack and the second rack.

3. The air outlet structure according to claim 2, characterized in that: The first rack and the second rack are both arc-shaped.

4. The air outlet structure according to claim 1, characterized in that: The driving mechanism includes a connecting shaft, which is arranged in the installation cavity. The first connecting member and the second connecting member are both rotatably arranged on the connecting shaft.

5. The air outlet structure according to claim 4, characterized in that: The first connecting member includes a first end and a second end, and the first connecting member is further provided with a first mounting hole for the connecting shaft to pass through, and the first mounting hole is arranged between the first end and the second end, the first end is connected to the first heating element, and the second end is connected to the rotational power output assembly, the second connecting member includes a third end and a fourth end, the third end is connected to the second heating element, and the fourth end is connected to the rotational power output assembly, and the second connecting member is further provided with a second mounting hole for the connecting shaft to pass through, and the second mounting hole is arranged between the third end and the fourth end.

6. The air outlet structure according to claim 1, characterized in that: The installation shell further includes a guide structure, which is arranged in the installation cavity. The first heating element and the second heating element are both movably arranged on the guide structure.

7. The air outlet structure according to claim 6, characterized in that: The guide structure includes a guide groove and a limit body arranged in the installation cavity. The limit body is arranged in the guide groove, and the limit body is arranged between the first heating element and the second heating element. When the heating element is in the first working state, the first heating element and the second heating element abut against the limit body.

8. The air outlet structure according to claim 6, characterized in that: The mounting shell is cylindrical, the cross section of the first heating element is a first arc-shaped surface, and the cross section of the second heating element is a second arc-shaped surface.

9. The air outlet structure according to claim 8, characterized in that: The first heating element, the second heating element and the mounting housing are coaxially arranged.

10. The air outlet structure according to any one of claims 1 to 9, characterized in that: It also includes a heating device for heating the first heating element and the second heating element. When the heating element is in a first working state, the heating device heats the first heating element and the second heating element. When the heating element is in a second working state, the heating device stops heating the first heating element and the second heating element.

11. A fan, characterized in that: It comprises the air outlet structure according to any one of claims 1 to 10, and further comprises a fan, wherein the fan is arranged in the installation cavity.

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