Air outlet duct structure with valve structure

Abstract

The utility model relates to a kind of air outlet air duct structures with valve structure, by the setting of single air valve, multi-direction air supply can be realized, when user needs directional air supply, switch to first air outlet mode, airflow is oriented to target area by first air outlet (front), air supply precision is improved by more than 50%, avoid energy waste caused by airflow dispersion;When user needs large-scale air supply, switch to second air outlet mode, airflow is output simultaneously by double-side second air outlet, air outlet range is expanded by 2-3 times, indoor air circulation can be quickly realized;In addition, the air duct can realize the switching of first air outlet mode and second air outlet mode by a group of air valve assemblies, without setting multiple independent air ducts and driving motors, compared with traditional multi-air-valve bladeless fan, simplify the internal structure of bladeless fan.

Description

Technical Field

[0001] This utility model relates to the field of bladeless fan technology, and in particular to an air outlet duct structure with a valve. Background Technology

[0002] As a new type of air conditioning device, bladeless fans are widely used in homes, offices, and nurseries due to their safe design without exposed blades, gentle airflow, and minimalist appearance. Their core working principle involves an internal fan drawing air in through the inlet, accelerating and pressurizing it, and then expelling it through the outlet duct. The outlet duct, as a key component for air transmission and distribution within the bladeless fan, directly determines the direction and range of the airflow.

[0003] Traditional bladeless fans typically use a single, fixed airflow channel design, enabling airflow in only one direction. Some high-end products, however, employ multiple independent airflow channels and valves to achieve multi-directional airflow, adjusting the airflow direction by controlling the opening and closing of different channels. This design not only increases the complexity of the internal airflow structure but also requires multiple control modules, resulting in increased size and weight for the bladeless fan, while also raising assembly difficulty and the probability of malfunction. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes an air outlet duct structure with a valve structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An air outlet duct structure with a valve includes a split pipe, an air inlet connection port is provided at the rear side of the split pipe, a first air outlet is provided at the front side, and second air outlets are provided at both the left and right ends. An air valve assembly is also provided inside the split pipe. The air valve assembly is used to switch between a first air outlet mode and a second air outlet mode. In the first air outlet mode, the air inlet connection port is connected to the first air outlet, and in the second air outlet mode, the air inlet connection port is connected to both second air outlets.

[0006] In some embodiments, a hot air outlet housing is provided on the first air outlet, and an electric heater is provided inside the hot air outlet housing.

[0007] In some embodiments, a plurality of grille plates are provided at intervals along the left and right direction at the air outlet of the hot air outlet housing. The grille plates are hinged to the hot air outlet housing so that the air outlet angle can be adjusted by swinging. A first adjustment component that can drive the grille plates to swing is also provided on the hot air outlet housing.

[0008] In some embodiments, the first adjustment component includes a first sliding plate and a second sliding plate that slide left and right on the hot air outlet housing. A column is provided at the upper end of each of the grille plates. A connecting strip is connected to the upper end of the column. Guide posts are spaced left and right at the upper end of the connecting strip. Guide adjustment grooves are spaced left and right on the first sliding plate. Two guide posts are correspondingly provided in the guide adjustment grooves. A first rack is also provided on the first sliding plate. A second rack is provided on the second sliding plate. A transmission gear meshes between the first rack and the second rack. An adjustment lever is also provided at the upper end of the second sliding plate.

[0009] In some embodiments, the air valve assembly includes two diversion cylinders that slide left and right within the diversion pipe. The diversion cylinders slide within the second air outlet. The outer end of each diversion cylinder is an open air outlet, and the inner end has an arc-shaped air guiding structure. An air inlet is provided on the rear side of the inner end. In the first air outlet mode, the two diversion cylinders move outward relative to each other, sealing the connection between the air inlet and the second air outlet through the inner ends of the diversion cylinders. In the second air outlet mode, the two diversion cylinders move inward relative to each other, sealing the connection between the air inlet and the first air outlet through the inner ends of the two diversion cylinders. The air inlet is connected to the air inlet.

[0010] In some embodiments, a second adjustment component is further provided on the diversion pipe, the second adjustment component being used to drive the two diversion cylinders to move outward synchronously, or to move inward synchronously.

[0011] In some embodiments, the second adjustment component includes guide grooves spaced apart on the diversion pipe, sliding columns that slide within the guide grooves are provided at the upper ends of both diversion cylinders, a transmission arm is hinged to the upper end of each sliding column, and a knob is rotatably mounted at the upper end of the diversion pipe and between the two guide grooves, with the other end of the transmission arm hinged to the knob.

[0012] In some embodiments, a torsion spring is connected between the shunt tube and the sliding column.

[0013] In some embodiments, a sensor is also provided on the diversion tube, and a flange that cooperates with the sensor is provided on the knob. When the knob drives the two diversion cylinders to move outward synchronously, the flange triggers the sensor.

[0014] In some embodiments, cold air outlet pipes are rotatably installed on the two second air outlets, and cold air outlets are provided at the front ends of the two cold air outlet pipes.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a single air valve, multi-directional air supply can be achieved. When the user needs directional air supply, switch to the first air supply mode. The airflow is delivered directionally to the target area through the first air outlet (front), improving the air supply accuracy by more than 50% and avoiding energy waste caused by airflow dispersion. When the user needs air supply over a large area, switch to the second air supply mode. The airflow is output simultaneously through the second air outlets on both sides, expanding the air supply range by 2-3 times and quickly achieving indoor air circulation.

[0016] 2. In addition, this air duct can switch between the first air outlet mode and the second air outlet mode with only one set of air valve components, without the need to set up multiple independent air ducts and drive motors. Compared with traditional multi-valve bladeless fans, it simplifies the internal structure of bladeless fans. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the air outlet structure of the bladeless fan of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the first air outlet configuration of this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the second air outlet configuration of this utility model.

[0020] Figure 4 This is one of the three-dimensional schematic diagrams of this utility model.

[0021] Figure 5 This is the second three-dimensional schematic diagram of the present invention.

[0022] Figure 6 This utility model Figure 4 Enlarged diagram of point A.

[0023] Figure 7 This utility model Figure 5 Enlarged diagram of point B.

[0024] Figure 8 This is a schematic diagram of the structure of the grating plate after installation. Detailed Implementation

[0025] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0026] like Figures 1-8The air duct structure with valve structure shown includes a diversion pipe 1, an air inlet connection port 2 is provided on the rear side of the diversion pipe 1, a first air outlet 3 is provided on the front side, and second air outlets 4 are provided on both the left and right ends. An air valve assembly is also provided in the diversion pipe 1. The air valve assembly is used to switch between a first air outlet mode and a second air outlet mode. In the first air outlet mode, the air inlet connection port 2 is connected to the first air outlet 3, and in the second air outlet mode, the air inlet connection port 2 is connected to both second air outlets 4.

[0027] The diversion pipe 1 is the main supporting component of the air duct. Its spatial layout forms a basic airflow framework with rear air intake and front and left and right air outlets: the rear air intake connection port 2 is used to connect to an external fan or air supply source, serving as the only inlet for airflow input; the first air outlet 3 on the front and the second air outlets 4 on the left and right ends are the airflow output ends, corresponding to the functional requirements of directional air outlet and bilateral diffusion air outlet, respectively; the built-in air valve assembly is the core actuator for airflow switching. Through its own mechanical action, it changes the airflow conduction path inside the diversion pipe, thereby switching between the two air outlet modes.

[0028] The two air outlet modes can be switched using only a single split pipe and a set of air valve assemblies, eliminating the need to design multiple independent air ducts, multiple air valves and corresponding drive components, simplifying the overall structure of the air duct and reducing design complexity.

[0029] Furthermore, a cold air outlet pipe 10 is rotatably installed on the two second air outlets 4, and a cold air outlet 11 is provided at the front end of the two cold air outlet pipes 10; the cold air outlet pipe 10 is connected to the second air outlet 4 through a rotating connector, and can rotate around the central axis of the second air outlet 4 to meet the multi-directional adjustment requirements.

[0030] See Figure 2 , Figure 3 As shown, a hot air outlet housing 21 is provided on the first air outlet 3, and an electric heater 22 is provided inside the hot air outlet housing 21. After the airflow enters the hot air outlet housing 21 from the first air outlet 3, the electric heater 22 is powered on and started, and the heating element generates heat. The airflow comes into full contact with the heat inside the hot air outlet housing 21 and exchanges heat, and the temperature rises rapidly. Finally, it is directionally output from the outlet of the hot air outlet housing 21 to form a highly concentrated, constant-temperature stable hot air.

[0031] The start-up and shutdown of the electric heater 22 are synchronized with the switching of the air outlet mode of the air valve assembly. The electric heater 22 is only ready to start when the air valve assembly switches to the first air outlet mode (airflow is directed to the first air outlet 3). When switching to the second air outlet mode, the electric heater 22 automatically cuts off the power to avoid local overheating damage caused by heating without airflow, while saving energy.

[0032] See Figure 5 , Figure 7 , Figure 8 As shown, a plurality of grille plates 31 are arranged at intervals along the left and right direction at the air outlet of the hot air outlet housing 21. The grille plates 31 are hinged to the hot air outlet housing 21, so that the air outlet angle can be adjusted by swinging. A first adjustment component that can drive the grille plates 31 to swing is also provided on the hot air outlet housing 21.

[0033] Several grille plates 31 are distributed at intervals along the left and right directions of the air outlet of the hot air outlet housing 21 (the spacing is usually uniform to ensure balanced airflow distribution), and each grille plate 31 is connected to the hot air outlet housing 21 through a hinge shaft. The hinge structure allows the grille plate 31 to swing around the hinge shaft in the left and right directions, thereby changing its angle with the airflow and ultimately adjusting the air outlet direction.

[0034] The first adjustment component, as the power source for the grille 31, can drive all the grille 31 to swing synchronously through manual operation or electric drive.

[0035] Furthermore, the first adjustment component includes a first sliding plate 41 and a second sliding plate 42 that slide left and right on the hot air outlet housing 21. A column 43 is provided at the upper end of each of the grille plates 31. A connecting strip 44 is connected to the upper end of the column 43. Guide posts 45 are spaced left and right at the upper end of the connecting strip 44. Guide adjustment grooves 46 are spaced left and right on the first sliding plate 41. The two guide posts 45 are correspondingly arranged in the guide adjustment grooves 46. A first rack 47 is also provided on the first sliding plate 41. A second rack is provided on the second sliding plate 42. A transmission gear 49 meshes between the first rack 47 and the second rack. An adjustment lever 410 is also provided at the upper end of the second sliding plate 42.

[0036] During adjustment, the user moves the adjustment lever 410 on the hot air outlet housing 21, causing the second sliding plate 42, which is fixedly connected to the lever, to slide left and right. The adjustment lever 410 protrudes from the surface of the housing 100 for easy user operation. The second rack on the second sliding plate 42 meshes with the transmission gear 49. When the second sliding plate 42 slides, the second rack drives the transmission gear 49 to rotate. At the same time, the transmission gear 49 meshes with the first rack 47 on the first sliding plate 41, thereby driving the first sliding plate 41 to move in the opposite direction to the second sliding plate 42. The first slide plate 41 is provided with guide adjustment grooves 46 spaced left and right. The two guide posts 45 at the upper end of the connecting strip 44 are respectively embedded in the two guide adjustment grooves 46. When the first slide plate 41 slides left and right, the groove wall of the guide adjustment groove 46 will generate a lateral thrust on the guide post 45, forcing the guide post 45 to slide along the groove while driving the connecting strip 44 to move left and right at the same time. The lower end of the connecting strip 44 is connected to the column 43 at the upper end of all the grid plates 31. When the connecting strip 44 moves left and right, it will cause the grid plates 31 to swing synchronously around the hinge axis.

[0037] See Figures 2-6 As shown, the air valve assembly includes two diversion cylinders 51 that slide left and right within the diversion pipe 1. The diversion cylinders 51 slide within the second air outlet 4. The outer end of each diversion cylinder 51 is an open air outlet, and the inner end has an arc-shaped air guiding structure. An air inlet 52 is provided on the rear side of the inner end. In the first air outlet mode, the two diversion cylinders 51 move outward relative to each other, and the connection between the air inlet connection 2 and the second air outlet 4 is sealed through the inner end of each diversion cylinder 51. In the second air outlet mode, the two diversion cylinders 51 move inward relative to each other, and the connection between the air inlet connection 2 and the first air outlet 3 is sealed through the inner end of each diversion cylinder 51. The air inlet 52 is connected to the air inlet connection 2.

[0038] Specifically, the diversion cylinder 51 is the core actuator of the air valve assembly. It is adapted to the size of the second air outlet 4 and can slide in the left and right direction inside the diversion pipe 1. The sliding track is usually integrated into the inner wall of the diversion pipe (not shown in the attached figure) to ensure smooth sliding. The outer end of the diversion cylinder 51 is an open air outlet that is connected to the external environment of the second air outlet 4. When the diversion cylinder is open, the airflow can be directly output from the outer end. The inner end has an arc-shaped air guiding structure, which can reduce the resistance when the airflow passes through and achieve the flow channel opening and closing by sealing the end. The air inlet 52 is the key channel for the airflow to enter the diversion cylinder 51 and is connected to the air inlet connection port 2 only in the second air outlet mode.

[0039] In the first air outlet configuration, the two diversion cylinders 51 move outwards relative to each other, sealing the connection between the air inlet 2 and the second air outlet 4 through the inner ends of the diversion cylinders 51. The inner ends of the diversion cylinders 51 physically block the flow path between the air inlet 2 and the second air outlet 4. At this time, the airflow output from the air inlet 2 cannot enter the second air outlet area, and all airflow is guided to the first air outlet 3 on the front side, ultimately achieving directional air delivery from the front.

[0040] In the second air outlet configuration, the two diversion cylinders 51 move inwards and fit together, sealing the connection between the air inlet 2 and the first air outlet 3 through their inner ends, while the air inlet 52 is connected to the air inlet 2. The two diversion cylinders 51 move towards the center along the inside of the diversion pipe 1 until their inner ends fit together tightly, forming a central sealing structure. The inner ends of the fitted diversion cylinders block the flow channel between the air inlet 2 and the first air outlet 3, while the rear inner end air inlet 52 of the diversion cylinder is fully aligned and connected to the air inlet 2. After the airflow enters from the air inlet 2, it enters the left and right diversion cylinders respectively through the air inlets 52 of the two diversion cylinders, and after being guided by the inner arc-shaped air guide structure, it is synchronously output from the outer end of the diversion cylinder, realizing double-sided diffusion air supply.

[0041] See Figures 2-5 As shown, a second adjustment component is also provided on the diversion pipe 1. The second adjustment component is used to drive the two diversion cylinders 51 to move outward synchronously or move inward synchronously. The second adjustment component is the power source and synchronous control core for the sliding of the diversion cylinders 51. Its core design goal is to ensure that the two diversion cylinders move completely synchronously during the switching process. Whether they move outward synchronously or move inward synchronously, the displacement of the two diversion cylinders must be consistent.

[0042] Furthermore, the second adjustment component includes guide grooves 71 spaced apart on the diversion pipe 1, and sliding columns 72 that slide within the guide grooves 71 are provided at the upper ends of both diversion cylinders 51. A transmission arm 74 is hinged to the upper end of each sliding column 72. A knob 73 is rotatably mounted at the upper end of the diversion pipe 1 and between the two guide grooves 71. The other end of the transmission arm 74 is hinged to the knob 73.

[0043] One end of each of the two transmission arms 74 is hinged to a non-central position of the knob 73, and the other end is hinged to a sliding column 72 at the upper end of the two diversion cylinders 51. When the knob rotates, the hinge point between the transmission arm and the knob will move in a circular motion around the rotation axis, thereby generating a pushing and pulling force on the sliding column. For example, when the knob 73 rotates clockwise, the hinge points of the two transmission arms 74 move outward, and the transmission arms 74 push the sliding column 72 to slide to the left and right along the guide groove 71, causing the two diversion cylinders to move outward synchronously. Similarly, when the knob 73 rotates counterclockwise, the hinge points of the two transmission arms 74 move inward, and the transmission arms 74 pull the sliding column 72 to slide towards the center along the guide groove 71, causing the two diversion cylinders 51 to move inward synchronously.

[0044] It should be noted that, in order to improve the product's appearance and airtightness, the distributor 1 is wrapped with an outer shell 100 (e.g., Figure 1 As shown, the outer casing 100 completely encloses the diversion pipe 1, forming a closed space. Through the tight fit between the outer casing and the diversion pipe 1 (e.g., using sealing strips or snap-fit ​​sealing structures), airflow exchange between the guide groove 71 and the external environment is effectively blocked, preventing airflow leakage from the groove gaps within the duct, further improving the overall airtightness of the duct and ensuring that air delivery efficiency is not affected. While enclosing the diversion pipe 1, the outer casing 100 also features an adapted design for the installation positions of the knob 73 and the adjustment lever 410, allowing only a portion of the knob 73 and adjustment lever 410 to protrude outside the outer casing, thus preserving the convenience of manual operation for the user. Furthermore, the structure of the outer casing 100 is more harmonious with the overall style of the equipment, significantly enhancing the product's refined appearance and integrated visual effect.

[0045] See Figure 4 , Figure 5 As shown, a torsion spring 81 is connected between the diversion tube 1 and the sliding column 72. The torsion spring 81 is made of a metal material (such as spring steel) with stable elastic properties. Its key design is bidirectional pre-tightening adaptation. According to the two target shapes of the diversion cylinder 51, the torsion spring 81 is preset with the corresponding elastic force during initial assembly. When the diversion cylinder 51 is in the state of outward expansion or inward closing, the torsion spring 81 can generate a pre-tightening force that matches the shape, locking the sliding column in the corresponding position, thereby fixing the shape of the diversion cylinder 51.

[0046] Specifically, when the user rotates knob 73, the sliding column 72 is pushed outward along guide groove 71 via transmission arm 74, causing the two splitter cylinders to expand outward synchronously until the inner ends of the splitter cylinders are in contact with the inner wall of the splitter pipe, completing the shape change. At this time, torsion spring 81 undergoes elastic deformation due to the outward displacement of sliding column 72, forming a continuous outward tightening preload. This force acts directly on the sliding column, stabilizing it at the outer end of the guide groove, thus keeping the two splitter cylinders in an outward expanded state. Conversely, when the user rotates knob 73 in the opposite direction, the sliding column 72 is pulled inward along guide groove 71 via transmission arm 74, causing the two splitter cylinders to move inward synchronously until the inner ends of the two splitter cylinders are in contact with each other, completing the shape change. At this time, torsion spring 81 undergoes reverse elastic deformation with the inward displacement of sliding column, forming a continuous inward tightening preload. This force stabilizes the sliding column at the inner end of the guide groove, keeping the two splitter cylinders in an inward moving state.

[0047] By using a torsion spring to pre-tighten and lock the two modes in both directions, it is ensured that the diversion cylinder will not shift due to external interference under any target mode, thus guaranteeing the stable air delivery efficiency and effect of each air outlet mode.

[0048] Furthermore, a sensor 91 is also provided on the diversion pipe 1, and a flange that cooperates with the sensor 91 is provided on the knob 73. When the knob 73 drives the two diversion cylinders 51 to move outward synchronously, the flange triggers the sensor 91.

[0049] The sensor 91 is preferably a micro switch, which is fixed at the upper end of the diverter tube 1 and close to the knob 73. Its trigger end faces the knob and only contacts the flange on the knob when the knob is rotated to the angle where the diverter tube is spread outward. The micro switch is connected to the main control board of the equipment through a wire. The closing signal is transmitted to the main control board through the wire. After receiving the signal, the main control board recognizes that the current equipment is in the first air outlet mode. According to the signal that the first air outlet mode is in place, the main control board sends a start command to the electric heater 22 to control the electric heater to be powered on and heat up. At this time, the airflow enters the hot air outlet housing 21 through the first air outlet 3 and forms hot air output after heat exchange with the heat.

[0050] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air outlet duct structure with a valve, characterized in that: It includes a diversion pipe (1), an air inlet connection port (2) is provided on the rear side of the diversion pipe (1), a first air outlet (3) is provided on the front side, and a second air outlet (4) is provided on both the left and right ends. A damper assembly is also provided in the diversion pipe (1). The damper assembly is used to switch between a first air outlet mode and a second air outlet mode. The first air outlet mode is that the air inlet connection port (2) is connected to the first air outlet (3), and the second air outlet mode is that the air inlet connection port (2) is connected to the two second air outlets (4).

2. The air outlet duct structure with valve structure according to claim 1, characterized in that: A hot air outlet housing (21) is provided on the first air outlet (3), and an electric heater (22) is provided inside the hot air outlet housing (21).

3. The air outlet duct structure with valve structure according to claim 2, characterized in that: A plurality of grille plates (31) are provided at intervals along the left and right direction at the air outlet of the hot air outlet housing (21). The grille plates (31) are hinged to the hot air outlet housing (21) so that the air outlet angle can be adjusted by swinging. A first adjustment component that can drive the grille plates (31) to swing is also provided on the hot air outlet housing (21).

4. The air outlet duct structure with valve structure according to claim 3, characterized in that: The first adjustment component includes a first sliding plate (41) and a second sliding plate (42) that slide left and right on the hot air outlet housing (21). A column (43) is provided at the upper end of each of the grille plates (31). A connecting strip (44) is connected to the upper end of the column (43). A guide post (45) is spaced left and right at the upper end of the connecting strip (44). A guide adjustment groove (46) is spaced left and right on the first sliding plate (41). The two guide posts (45) are correspondingly arranged in the guide adjustment groove (46). A first rack (47) is also provided on the first sliding plate (41). A second rack is provided on the second sliding plate (42). A transmission gear (49) meshes between the first rack (47) and the second rack. An adjustment lever (410) is also provided at the upper end of the second sliding plate (42).

5. The air outlet duct structure with valve structure according to claim 2, characterized in that: The air valve assembly includes two diversion cylinders (51) that slide left and right within the diversion pipe (1). The diversion cylinders (51) slide within the second air outlet (4). The outer end of the diversion cylinder (51) is an open air outlet, and the inner end is an arc-shaped air guide structure. An air inlet (52) is provided on the rear side of the inner end. In the first air outlet mode, the two diversion cylinders (51) move outward relative to each other and close the connection between the air inlet connection (2) and the second air outlet (4) through the inner end of the diversion cylinder (51). In the second air outlet mode, the two diversion cylinders (51) move inward relative to each other and close the connection between the air inlet connection (2) and the first air outlet (3) through the inner end of the two diversion cylinders (51). The air inlet (52) is connected to the air inlet connection (2).

6. The air outlet duct structure with valve structure according to claim 5, characterized in that: A second adjustment component is also provided on the diversion pipe (1). The second adjustment component is used to drive the two diversion cylinders (51) to move outward synchronously or to move inward synchronously.

7. The air outlet duct structure with valve structure according to claim 6, characterized in that: The second adjustment component includes guide grooves (71) spaced apart on the diversion pipe (1), and sliding columns (72) that slide in the guide grooves (71) are provided at the upper ends of the two diversion cylinders (51). A transmission arm (74) is hinged to the upper end of each sliding column (72). A knob (73) is rotatably installed at the upper end of the diversion pipe (1) and between the two guide grooves (71). The other end of the transmission arm (74) is hinged to the knob (73).

8. The air outlet duct structure with valve structure according to claim 7, characterized in that: A torsion spring (81) is connected between the shunt pipe (1) and the sliding column (72).

9. The air outlet duct structure with valve structure according to claim 7, characterized in that: A sensor (91) is also provided on the diversion tube (1), and a flange that cooperates with the sensor (91) is provided on the knob (73). When the knob (73) drives the two diversion cylinders (51) to move outward synchronously, the flange triggers the sensor (91).

10. An air outlet duct structure with a valve structure according to any one of claims 1-9, characterized in that: A cold air outlet pipe (10) is rotatably installed on the two second air outlets (4), and a cold air outlet (11) is provided at the front end of the two cold air outlet pipes (10).

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