Fan system and oven

Abstract

The invention relates to a fan system and an oven. The fan system comprises a motor, a first shaft body, a reverse rotation assembly, a second shaft body, a third shaft body, a linkage assembly, fan blades and outer-row blocking pieces, the first shaft body is fixedly connected with an output shaft of the motor, the second shaft body and the first shaft body are arranged in parallel, and the reverse rotation assembly is connected with the first shaft body and the second shaft body; the second shaft body is driven to rotate reversely through the rotation of the first shaft body; the second shaft body is inserted into the third shaft body in the axial direction, so that the third shaft body and the second shaft body are fixed in the circumferential direction and are in sliding connection in the axial direction, and the linkage assembly is connected with the first shaft body and the third shaft body so as to drive the third shaft body to reciprocate in the axial direction through relative rotation between the first shaft body and the third shaft body; the fan blades are fixed to the outer circumferential face of the third shaft body, the outer-row blocking piece corresponds to an outer exhaust port of the inner container, and the outer-row blocking piece is fixed relative to the third shaft body in the axial direction, so that the blocking amount of the outer-row blocking piece to the outer exhaust port is changed through axial movement of the third shaft body.

Description

Technical Field

[0001] The present invention relates to the technical field related to ovens, and in particular to a fan system and an oven. Background Art

[0002] At present, the fan blades of the hot air blower inside the oven are fixed to the output shaft of the motor, and the fan blades are driven by the motor to rotate to complete the air discharge;

[0003] However, since different baking modes or different baked dishes have different requirements for baking hot air, most existing ovens need to pre-set the software for different baking modes and different baked dishes, so that the corresponding software can be used to control the working parameters of the hot air blower during the actual baking process, thereby achieving changes in air volume within a unit cycle to meet different baking requirements.

[0004] The software preset process requires setting the fan speed and stop ratio according to different baking modes and baked dishes, which is a cumbersome process.

[0005] In addition, the fan blades of hot air blowers currently have high requirements for accuracy during installation. If there is an error in the installation position of the fan blades, on the one hand, it will affect the working consistency between different devices. On the other hand, it will cause the change in air volume after running according to the software's preset working parameters to be different from the expected air volume change, affecting the cooking effect. Summary of the invention

[0006] Based on this, it is necessary to provide a fan system and oven that can simplify the software and reduce the difficulty of fan blade installation in order to address the problem that the software preset process of the hot air blower inside the oven is relatively cumbersome and has high requirements for the fan blade installation accuracy.

[0007] The present application first provides a fan system, including a motor, a first shaft, a reversing assembly, a second shaft, a third shaft, a linkage assembly, a fan blade, and an outer baffle, wherein:

[0008] The first shaft is fixedly connected to the output shaft of the motor, the second shaft is arranged parallel to the first shaft, and the reversing assembly connects the first shaft and the second shaft to drive the second shaft to rotate in the opposite direction through the rotation of the first shaft;

[0009] The second shaft body is inserted into the third shaft body along the axial direction, so that the third shaft body is fixed to the second shaft body along the circumferential direction and slidably connected along the axial direction, and the linkage assembly connects the first shaft body and the third shaft body to drive the third shaft body to reciprocate along the axial direction through relative rotation therebetween;

[0010] The fan blades are fixed to the outer peripheral surface of the third shaft, the outer baffle plate corresponds to the outer exhaust port of the inner tank, and the outer baffle plate is fixed relative to the third shaft body in the axial direction to change the blocking amount of the outer exhaust port by the outer baffle plate through the axial movement of the third shaft body.

[0011] In one embodiment, the fan system further includes a linkage baffle, which includes the outer baffle, the air inlet baffle and the air outlet baffle fixed to each other, and a hot air outlet corresponding to the fan blade is provided on the hot air fan baffle of the inner tank, wherein:

[0012] The air inlet baffle is directly opposite to the hot air outlet, and the air outlet baffle corresponds to the inner air outlet of the inner tank. The third shaft can drive the linkage baffle to move in the axial direction to synchronously change the opening sizes of the hot air outlet, the inner air outlet and the outer exhaust port.

[0013] In one of the embodiments, the air inlet baffle is sleeved on the outside of the first shaft, the air inlet baffle is relatively fixed to the third shaft along the axial direction, and is rotationally connected to the third shaft along the circumferential direction.

[0014] In one of the embodiments, the air inlet baffle is rotatably connected to the third shaft via a bearing, a limiting rod parallel to the first shaft is fixed on the hot air blower baffle, and the limiting rod passes through the air inlet baffle.

[0015] In one of the embodiments, two inner air outlets are correspondingly opened on both sides of the inner liner, and the linkage baffle includes two air outlet baffles corresponding to the two inner air outlets respectively.

[0016] In one embodiment, the reversing assembly includes a planetary wheel carrier, a sun gear, a ring gear and a planetary wheel, the planetary wheel carrier and the sun gear are both fixed to the first shaft, the ring gear is sleeved on the outside of the sun gear, the planetary wheel is located between the sun gear and the ring gear and is rotatably connected to the planetary wheel carrier, the planetary wheel is respectively meshed with the sun gear and the ring gear, and the second shaft is fixed to the ring gear.

[0017] In one embodiment, a linkage cavity is provided inside the third shaft body, a portion of the second shaft body passes through the linkage cavity, and a sliding pin is fixed to the inner wall of the linkage cavity;

[0018] The linkage assembly includes a linkage column fixed to the outer peripheral surface of the first shaft, the outer peripheral surface of the linkage column is in contact with the inner wall of the linkage cavity, and the outer peripheral surface of the linkage column is also provided with a slide groove, the sliding pin is embedded in the slide groove and is slidably connected to the inner wall of the slide groove.

[0019] In one of the embodiments, the slide groove surrounds the linkage column in a circle.

[0020] In one embodiment, the first shaft passes through the linkage cavity to be rotatably connected to the hot air blower baffle.

[0021] A second aspect of the present application provides an oven, comprising the above-mentioned fan system.

[0022] The above-mentioned fan system, through the power connection between the first shaft, the reversing assembly, the second shaft, the third shaft and the linkage assembly, can realize the reciprocating movement of the fan blades in the axial direction while rotating, so that the air volume output by the fan blades rotates regularly within the unit cycle of its reciprocating movement. On the one hand, the regularly changing air volume can meet the baking requirements of different modes and dishes. It is only necessary to set the rotation speed and baking time according to the needs, and there is no need to preset the stop ratio according to different modes and dishes of the dishes, which simplifies the software of the whole machine. On the other hand, the fan blades move back and forth in the axial direction during operation, which increases the redundancy of the fan blade installation position, reduces the influence of the fan blade installation error on the air volume, and effectively reduces the installation difficulty of the air volume system of the present application;

[0023] In addition, by setting an outer exhaust baffle fixed along the axial direction relative to the third axis, the opening area of ​​the outer exhaust port changes with the movement of the third axis, so that the opening area of ​​the outer exhaust port always matches the real-time air volume blown into the inner tank by the fan system, so as to improve the hot air utilization rate and baking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of the fan system of the present application when the fan blades move to the front end;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 for Figure 2 Schematic diagram of the middle fan blade moving to the rear end;

[0027] Figure 4 for Figure 1 A three-dimensional picture of the middle linkage baffle and the hot air blower baffle;

[0028] Figure 5 for Figure 4 Exploded diagram.

[0029] Figure numerals: 10, motor; 20, first shaft; 30, reversing assembly; 31, planetary gear carrier; 32, sun gear; 33, ring gear; 34, planetary gear; 40, second shaft; 50, third shaft; 51, linkage chamber; 52, sliding pin; 60, linkage assembly; 61, linkage column; 62, slide groove; 70, fan blade; 80, linkage baffle; 81, external baffle; 82, air inlet baffle; 83, air outlet baffle; 100, liner; 110, external exhaust port; 120, hot air blower baffle; 121, hot air outlet; 122, limit rod; 130, internal air outlet. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed 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", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Please combine Figure 1 , Figure 2 as well as Figure 3As shown, the present application first provides a fan system, including a motor 10, a first shaft 20, a reversing assembly 30, a second shaft 40, a third shaft 50, a linkage assembly 60, a fan blade 70 and an outer blocker 81, wherein the first shaft 20 is fixedly connected to the output shaft of the motor 10, the second shaft 40 is arranged parallel to the first shaft 20, the reversing assembly 30 connects the first shaft 20 and the second shaft 40 to drive the second shaft 40 to rotate in the opposite direction through the rotation of the first shaft 20; the second shaft 40 is inserted into the third shaft 50 along the axial direction so that The third shaft body 50 is fixed to the second shaft body 40 in the circumferential direction and slidably connected in the axial direction. The linkage assembly 60 connects the first shaft body 20 and the third shaft body 50 to drive the third shaft body 50 to reciprocate in the axial direction through relative rotation therebetween. The fan blades 70 are fixed to the outer circumferential surface of the third shaft body 50, the outer baffle plate 81 corresponds to the outer exhaust port 110 of the inner tank 100, and the outer baffle plate 81 is fixed relative to the third shaft body 50 in the axial direction to change the blocking amount of the outer baffle plate 81 to the outer exhaust port 110 through the axial movement of the third shaft body 50.

[0037] In the present application, through the power connection between the first shaft 20, the reversing assembly 30, the second shaft 40, the third shaft 50 and the linkage assembly 60, the fan blades 70 can be reciprocated in the axial direction while rotating, so that the air volume output by the fan blades 70 changes regularly within the unit cycle of its reciprocating movement. On the one hand, the regularly changing air volume can meet the baking requirements of different modes and dishes. It is only necessary to set the speed and baking time according to the needs, and there is no need to preset the stop ratio according to different modes and dishes, which simplifies the software of the whole machine. On the other hand, the fan blades 70 move back and forth in the axial direction during operation, which increases the redundancy of the installation position of the fan blades 70, reduces the influence of the installation error of the fan blades 70 on the air volume, and effectively reduces the installation difficulty of the air volume system of the present application.

[0038] Specifically, the motor 10 drives the first shaft 20 to rotate forward, and at the same time, the first shaft 20 drives the second shaft 40 to rotate reversely with the first shaft 20 as the center through the reversing assembly 30, and then drives the third shaft 50 to reverse through the second shaft 40. The linkage assembly 60 can utilize the relative rotation between the first shaft 20 and the third shaft 50 to drive the third shaft 50 to reciprocate in the axial direction, thereby realizing the reciprocating movement of the fan blades 70 in the axial direction while rotating.

[0039] It is worth mentioning that the periodic reciprocating movement of the fan blades 70 along the axial direction will make the real-time air volume blown into the inner pot 100 always in a dynamic state of change, and the greater the air volume, the greater the heat exchange between the hot air and the surface of the food, and the more moisture discharged from the food, and vice versa. Therefore, for the present application, the moisture discharge of the food during the baking process is also always in a dynamic state of change;

[0040] It is not difficult to understand that if the area of ​​the outer exhaust port 110 on the inner pot 100 for exhausting moisture is too large, the hot air may be directly exhausted from the outer exhaust port 110 without heat exchange with the food, the hot air utilization rate is low, and the baking efficiency is low. On the contrary, if the area of ​​the outer exhaust port 110 is too small, the moisture in the inner pot 100 may not be discharged in time, affecting the baking effect.

[0041] In this regard, in the present application, an outer exhaust baffle 81 is fixed along the axial direction relative to the third axis 50 so that the opening area of ​​the outer exhaust port 110 changes with the movement of the third axis 50, so that the opening area of ​​the outer exhaust port 110 always matches the real-time air volume blown into the inner tank 100 by the fan system, so as to improve the hot air utilization rate and baking effect.

[0042] Specifically, when the amount of air blown into the inner liner 100 by the fan blades 70 increases, the amount of blocking of the external exhaust port 110 by the outer baffle plate 81 decreases, and the opening area of ​​the external exhaust port 110 increases. Conversely, when the amount of air blown into the inner liner 100 by the fan blades 70 decreases, the amount of blocking of the external exhaust port 110 by the outer baffle plate 81 increases, and the opening area of ​​the external exhaust port 110 decreases.

[0043] Please combine Figure 1 , Figure 4 as well as Figure 5 As shown, in some embodiments, the fan system further includes a linkage baffle 80, which includes an outer baffle 81, an air inlet baffle 82 and an air outlet baffle 83 fixed to each other, and a hot air outlet 121 corresponding to the fan blade 70 is opened on the hot air fan baffle 120 of the liner 100, wherein,

[0044] The air inlet baffle 82 is directly opposite to the hot air outlet 121, and the air outlet baffle 83 corresponds to the inner air outlet 130 of the liner 100. The third shaft 50 can drive the linkage baffle 80 to move in the axial direction to synchronously change the opening sizes of the hot air outlet 121, the inner air outlet 130 and the outer exhaust port 110;

[0045] Among them, the fan blades 70 are located on the rear side of the inner pot 100. The airflow generated by the rotation of the fan blades 70 enters the inner pot 100 through the hot air outlet 121. After the hot air exchanges heat with the food, it returns to the rear side of the inner pot 100 through the inner air outlet 130 of the inner pot 100 to form an internal circulation, and the moisture discharged from the food is discharged to the outside through the external exhaust port 110.

[0046] In the present application, by setting the air inlet baffle 82 and the air outlet baffle 83, it is possible to further control the opening areas of the hot air outlet 121 and the internal air outlet 130 on the basis of controlling the opening area of ​​the external exhaust port 110, thereby achieving the control of the internal circulation air volume, and by organically combining the internal circulation air volume and the external exhaust moisture volume, the baking performance can be further improved.

[0047] Specifically, when the fan blade 70 moves toward the inner liner 100, the amount of blocking of the external exhaust port 110 by the outer baffle 81 increases, and the amount of blocking of the internal air outlet 130 by the air outlet baffle 83 increases; conversely, when the fan blade 70 moves away from the inner liner 100, the amount of blocking of the external exhaust port 110 by the outer baffle 81 decreases, and the amount of blocking of the internal air outlet 130 by the air outlet baffle 83 decreases.

[0048] More specifically, when the air inlet baffle 82 moves toward the side close to the inner liner 100, the blocking effect of the air inlet baffle 82 on the hot air outlet 121 is enhanced, and the air inlet area and air volume of the fan system are reduced. The blocking amount of the air outlet baffle 83 on the inner air outlet 130 is increased, and the return air area of ​​the fan system is reduced, thereby reducing the internal circulation air volume of the fan system; and the blocking amount of the outer exhaust baffle 81 on the outer exhaust port 110 is increased, and the external exhaust moisture volume of the fan system is reduced.

[0049] Therefore, in the present application, the external moisture exhaust volume and the internal circulation air volume are always matched in real time, which is beneficial to the humidity balance in the inner tank and can effectively improve the hot air utilization rate and baking effect.

[0050] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the air inlet baffle 82 is sleeved on the outside of the first shaft body 20, the air inlet baffle 82 is relatively fixed to the third shaft body 50 along the axial direction, and is rotationally connected to the third shaft body 50 along the circumferential direction.

[0051] Specifically, the air inlet baffle 82 is rotatably connected to the third shaft 50 via a bearing, and a limiting rod 122 parallel to the first shaft is fixed on the hot air blower baffle 120 , and the limiting rod 122 passes through the air inlet baffle 82 to limit the rotation of the air inlet baffle 82 .

[0052] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, two internal air outlets 130 are correspondingly opened on both sides of the inner pot 100, and the linkage baffle 80 includes two air outlet baffles 83 corresponding to the two internal air outlets 130, respectively, to ensure that the air inside the inner pot 100 can flow back to the rear side of the inner pot 100 evenly through the two internal air outlets 130, thereby improving the baking uniformity inside the inner pot 100.

[0053] Please combine Figure 2 as well as Figure 3As shown, in some embodiments, the reversing assembly 30 includes a planetary wheel carrier 31, a sun gear 32, a ring gear 33 and a planetary wheel 34. The planetary wheel carrier 31 and the sun gear 32 are both fixed to the first shaft 20. The ring gear 33 is sleeved on the outside of the sun gear 32. The planetary wheel 34 is located between the sun gear 32 and the ring gear 33 and is rotatably connected to the planetary wheel carrier 31. The planetary wheel 34 is respectively meshed with the sun gear 32 and the ring gear 33. The second shaft 40 is fixed to the ring gear 33.

[0054] Through the sequential transmission of the sun gear 32, the planetary gear 34 and the ring gear 33, the first shaft 20 and the third shaft 50 can rotate in the opposite direction, thereby increasing the relative rotation speed between the first shaft 20 and the third shaft 50, and increasing the frequency of the reciprocating movement of the third shaft 50 and the fan blades 70 in the axial direction, thereby achieving a regular change in the internal circulation air volume within a very short unit period, thereby improving the redundancy of the entire fan system.

[0055] In some embodiments, by controlling the gear ratios among the sun gear 32 , the planetary gears 34 and the ring gear 33 , the speed ratio between the first shaft 20 and the third shaft 50 can be controlled, thereby further increasing the frequency of the reciprocating movement of the fan blades 70 in the axial direction.

[0056] Of course, in some other embodiments, the reversing component 30 can also be implemented by a gear set or other commonly used transmission components, or directly implemented by multiple power sources, etc., as long as the first shaft 20 and the third shaft 50 can rotate in opposite directions. This application does not give examples one by one here.

[0057] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, a linkage cavity 51 is opened inside the third shaft body 50, a portion of the second shaft body 40 passes through the linkage cavity 51, and a sliding pin 52 is fixed to the inner wall of the linkage cavity 51;

[0058] The linkage assembly 60 includes a linkage column 61 fixed to the outer circumference of the first shaft body 20. The outer circumference of the linkage column 61 is in contact with the inner wall of the linkage cavity 51. The outer circumference of the linkage column 61 is also provided with a slide groove 62. The sliding pin 52 is embedded in the slide groove 62 and is slidably connected to the inner wall of the slide groove 62.

[0059] The reverse rotation of the third shaft body 50 and the first shaft body 20 will cause the inner wall of the slide groove 62 and the sliding pin 52 to squeeze each other in the axial direction. Since the first shaft body 20 and the linkage column 61 will not move in the axial direction, the sliding pin 52 will drive the third shaft body 50 to reciprocate in the axial direction.

[0060] Please combine Figure 2 as well as Figure 3As shown, in some embodiments, the slide groove 62 is circumferentially arranged around the linkage column 61; it is not difficult to understand that the fewer the number of circles of the slide groove 62, the shorter the unit period of the reciprocating movement of the third shaft body 50 and the fan blade 70 along the axial direction.

[0061] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the first shaft 20 passes through the linkage cavity 51 to be rotatably connected to the hot blower baffle 120, and the motor 10 and the hot blower baffle 120 are relatively fixed. Rotatingly connecting the first shaft 20 and the hot blower baffle 120 can improve the stability of the first shaft 20 and avoid shaking during the operation of the blower system.

[0062] A second aspect of the present application provides an oven, comprising the above-mentioned fan system.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0064] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fan system, characterized in that: The invention comprises a motor (10), a first shaft (20), a reversing assembly (30), a second shaft (40), a third shaft (50), a linkage assembly (60), a fan blade (70) and an outer blocker (81), wherein: The first shaft (20) is fixedly connected to the output shaft of the motor (10); the second shaft (40) is arranged parallel to the first shaft (20); and the reversing assembly (30) connects the first shaft (20) and the second shaft (40) so as to drive the second shaft (40) to rotate in the opposite direction through the rotation of the first shaft (20); The second shaft (40) is inserted into the third shaft (50) along the axial direction, so that the third shaft (50) and the second shaft (40) are fixed in the circumferential direction and slidably connected in the axial direction, and the linkage assembly (60) connects the first shaft (20) and the third shaft (50) to drive the third shaft (50) to reciprocate in the axial direction through relative rotation between the two; The fan blade (70) is fixed to the outer peripheral surface of the third shaft body (50), the outer baffle plate (81) corresponds to the outer exhaust port (110) of the inner liner (100), and the outer baffle plate (81) is fixed relative to the third shaft body (50) in the axial direction so as to change the blocking amount of the outer exhaust port (110) by the outer baffle plate (81) through the axial movement of the third shaft body (50).

2. The fan system according to claim 1, characterized in that: The fan system further comprises a linkage baffle (80), wherein the linkage baffle (80) comprises an outer baffle (81), an air inlet baffle (82) and an air outlet baffle (83) fixed to each other, and a hot air outlet (121) corresponding to the fan blade (70) is provided on the hot air fan baffle (120) of the inner tank (1), wherein: The air inlet baffle (82) is directly opposite to the hot air outlet (121), and the air outlet baffle (83) corresponds to the inner air outlet (130) of the inner liner (100), and the third shaft (50) can drive the linkage baffle (80) to move along the axial direction to synchronously change the opening sizes of the hot air outlet (121), the inner air outlet (130) and the outer exhaust port (110).

3. The fan system according to claim 2, characterized in that: The air inlet baffle (82) is sleeved on the outside of the first shaft (20); the air inlet baffle (82) is relatively fixed to the third shaft (50) along the axial direction and is rotationally connected to the third shaft (50) along the circumferential direction.

4. The fan system according to claim 3, characterized in that: The air inlet baffle (82) is rotatably connected to the third shaft (50) via a bearing, and a limiting rod (122) parallel to the first shaft is fixed on the hot air blower baffle (120), and the limiting rod (122) passes through the air inlet baffle (82).

5. The fan system according to claim 2, characterized in that: Two inner air outlets (130) are correspondingly provided on both sides of the inner liner (100), and the linkage baffle (80) comprises two air outlet baffles (83) respectively corresponding to the two inner air outlets (130).

6. The fan system according to claim 1, characterized in that: The reversing assembly (30) comprises a planetary wheel carrier (31), a sun gear (32), a ring gear (33) and a planetary wheel (34); the planetary wheel carrier (31) and the sun gear (32) are both fixed to the first shaft body (20); the ring gear (33) is sleeved on the outside of the sun gear (32); the planetary wheel (34) is located between the sun gear (32) and the ring gear (33) and is rotatably connected to the planetary wheel carrier (31); the planetary wheel (34) is respectively meshed with the sun gear (32) and the ring gear (33); and the second shaft body (40) is fixed to the ring gear (33).

7. The fan system according to claim 1, characterized in that: A linkage cavity (51) is provided inside the third shaft body (50), a portion of the second shaft body (40) penetrates into the linkage cavity (51), and a sliding pin (52) is fixed to the inner wall of the linkage cavity (51); The linkage assembly (60) comprises a linkage column (61) fixed to the outer peripheral surface of the first shaft body (20), the outer peripheral surface of the linkage column (61) is in contact with the inner wall of the linkage cavity (51), and the outer peripheral surface of the linkage column (61) is also provided with a slide groove (62), and the sliding pin (52) is embedded in the slide groove (62) and is slidably connected to the inner wall of the slide groove (62).

8. The fan system according to claim 7, characterized in that: The sliding groove (62) surrounds the linkage column (61) in a circumferential direction.

9. The fan system according to claim 7, characterized in that: The first shaft (20) passes through the linkage cavity (51) and is rotatably connected to the hot air blower baffle (120).

10. An oven, characterized in that: Comprising a fan system as claimed in any one of claims 1 to 9.

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