Air distribution box and control method thereof

Abstract

The invention relates to heating and ventilation equipment, in particular to an air distribution box and a control method thereof. According to the air distribution box, the double-blade split air valve unit is adopted, the resistance of the blades to fresh air when the fresh air passes through the air valve is reduced, the flow guide plate is further arranged in the box body of the air distribution box, the fresh air flowing from the air inlet to the air outlets is guided and shunted through the flow guide plate, and by adjusting the angle of the flow guide plate, the flow of the fresh air can be adjusted. And fresh air distributed to each air outlet can be more uniform and reasonable. By the adoption of the two structures, the noise problem of the air distribution box is solved, and the fresh air passing efficiency is improved. The invention further provides a control method of the air distribution box, the air distribution box is the air distribution box provided by the invention, a computer program / instruction is stored on the control device of the air distribution box, and when the computer program / instruction is executed by the control device, the control method comprises the steps of adjusting the angle of the flow guide plate and adjusting the opening degree of the air valve.

Description

Technical Field

[0001] The invention relates to a HVAC device, in particular to a wind box and a control method thereof. Background Art

[0002] The indoor unit of the air conditioner delivers fresh air to each indoor space through an air distribution box. The air distribution box has an air inlet connected to the indoor unit of the air conditioner and multiple air outlets. Different air outlets are connected to different air supply ducts to deliver the fresh air from the air inlet to different indoor spaces. Patent document CN112303785A records a static pressure air distribution box, which is different from a traditional air distribution box in that each air outlet has a corresponding air valve (i.e., an "air outlet valve assembly"), and the opening of each air valve can be adjusted according to the personalized settings of each indoor space to change the air supply volume delivered to each indoor space.

[0003] See the patent document attached Figure 2 The air valve of the air box has only one blade (i.e., the "air outlet door"), see the attached manual of this utility model. Figure 1 , the line with the arrow represents the direction of the fresh air. When the air valve opening is less than the maximum opening, the fresh air is blocked by the blade P1, the passing efficiency is low, and the risk of the air valve generating noise is high; the air distribution box does not have a device to guide and divert the fresh air flowing from the air inlet to each air outlet, which easily leads to uneven airflow to different air valves. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an air distribution box, which can structurally support the diversion of fresh air from the air inlet to each air outlet. The air distribution box provided by the present invention includes a box body and a control device, the box body has an air inlet and at least two air outlets, an air valve is provided in the air outlet, and at least one rotatable guide plate is also provided between the air inlet and the air outlet in the box body, the guide plate is used to guide the fresh air entering the air distribution box from the air inlet to each air outlet, the guide plate is connected to a first drive device, the first drive device is used to drive the guide plate to rotate, the control device is electrically connected to the first drive device to control the rotation angle of the guide plate; the air valve includes at least one air valve unit, the air valve unit includes two blades and a second drive device, the second drive device is used to drive the two blades to rotate synchronously in an open manner, and the control device is electrically connected to the second drive device to control the rotation angle of the two blades and change the opening of the air valve unit.

[0005] The air distribution box provided by the present invention adopts a double-blade split air valve unit, which reduces the resistance of the blades to the fresh air when the fresh air passes through the air valve. The air distribution box is also provided with a guide plate in the box body, through which the fresh air flowing from the air inlet to each air outlet is guided and diverted. By adjusting the angle of the guide plate, the fresh air distributed to each air outlet can be made more uniform and reasonable. By adopting these two structures, the present invention improves the noise problem of the air distribution box and improves the passing efficiency of the fresh air.

[0006] The second technical problem to be solved by the present invention is to provide a control method for an air distribution box. The control method can be applied to the air distribution box provided by the present invention to realize the control of the air distribution box under the following circumstances: at least two air outlets of the air distribution box are connected to air supply ducts, different air outlets supply air to different spaces through different air supply ducts, a wind speed sensor is provided in the air supply duct, the air inlet of the air distribution box is connected to an air conditioner indoor unit, the wind speed sensor and the air conditioner indoor unit are electrically connected to the control device of the air distribution box respectively, a computer program / instruction is stored on the control device of the air distribution box, and when the computer program / instruction is executed by the control device, the steps of the control method are realized. The control method includes: Steps to adjust the deflector angle: Step S11: When the wind box is turned on for the first time, the second driving device is controlled to make each air valve unit in the maximum open state; Step S12: adjusting the deflector angle by controlling the first driving device according to the real-time wind speed data fed back by each wind speed sensor until the difference between the maximum value and the minimum value of the real-time wind speed data fed back by each wind speed sensor is less than a preset first difference; Air valve opening adjustment steps: Step S2: After step S12, after receiving the air-conditioning instruction of the corresponding space, the opening degree of the corresponding air valve unit is adjusted by controlling the corresponding second driving device according to the target temperature data and real-time temperature data of the corresponding space.

[0007] The structure of the air distribution box may be symmetrical or asymmetrical. Even if it is symmetrical, due to the limitation of the installation environment, some of the air outlets of the air distribution box may not be put into use because they are close to the wall or there are few rooms, resulting in the air distribution box being in an asymmetrical state. The fresh air coming in from the air inlet cannot be evenly distributed to the air outlets. Therefore, when it is turned on for the first time, the angle of the guide plate in the air distribution box needs to be adjusted to adapt to the current distribution of the air outlet and air inlet of the air distribution box, so that the fresh air coming in from the air inlet can be evenly distributed to the air outlets. Before the present invention, the air distribution box did not have a guide plate mechanism, and there was no condition to adjust the fresh air distribution according to the distribution of the air outlet and air inlet of the air distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1A wind direction schematic diagram of an existing wind valve structure; Figure 2 and 3 They are three-dimensional views of a bellows in different viewing angles according to an embodiment of the present invention; Figure 4 for Figure 2 An exploded view of the wind box shown; Figure 5 for Figure 4 A three-dimensional view of the air valve shown; Figure 6 for Figure 5 An exploded view of the damper shown; Figure 7 for Figure 6 Exploded view of A in the middle; Figure 8 for Figure 7 An exploded view of the air valve unit shown; Fig. 9 for Figure 8 Exploded view of B in the middle; Fig.10 for Fig. 9 Exploded view of middle C; Figure 11-1 for Fig. 9 a perspective view of the gear shown; Figure 11-2 for Fig. 9 A perspective view of the drive device shown; Figure 11-3 for Fig. 9 An exploded view of the blade shown; Fig.12 for Figure 5 A cross-sectional view of the air valve from a closed state to a maximum open state; Fig.13 for Figure 5 Schematic diagram of wind direction of the air valve and direction of opening the air valve; Fig.14 Schematic diagram of the wind direction and the direction of opening the air valve of the second embodiment of the present invention; Fig.15 It is a schematic diagram of adjusting the guide plate of the air distribution box of the present invention; Reference numerals: Air conditioner indoor unit X, air box Y, air supply duct Z, box body 100, control device 200, air valve 300, guide plate 400, cover plate 101, partition structure 102, plate body 401, plate shaft 402, first drive device 500, air valve unit 301, connecting frame 302, outer frame 303, air valve bracket 1, blade bracket 11, control box 12, box body 121, cover body 122, active blade 2a, driven blade 2b, plate 21, shaft 22, screw 23, second drive device 4, limiter 5, active gear 3a, driven gear 3b, first column 1 61b, first column 2 62, second column 61a. DETAILED DESCRIPTION Embodiment 1

[0009] See also Figures 2 to 4 , a wind box Y, including a box body 100 and a control device 200, the control device 200 is installed on the lower side of the box body 100, the box body 100 has two optional air inlets and three optional air outlets, see Fig.15 , the air distribution box Y is used in the fresh air system, one of the two air inlets is selected to be connected to the air conditioner X, the other is closed with a cover plate 101, and the three air outlets are all put into use, each connected to an air supply duct Z, and a corresponding air valve 300 is set in the box 100 for each air outlet put into use. Since the box 100 has three air outlets, two guide plates 400 are set in the box 100 to evenly divide the fresh air entering the box 100 from the air supply port and guide it to each air outlet. The rotation angle range d1 of the guide plate 400 is 150°, and a suitable guide plate 400 angle can be found by selecting any of the two air inlets.

[0010] The box body 100 includes an outer shell component and an inner shell component, and the cover plate 101 belongs to the outer shell component. The inner shell component is located inside the outer shell component, and the guide plate 400 and the air valve 300 are located inside the inner shell component. The inner shell component includes an inner shell upper shell and an inner shell lower shell spliced ​​one above and one below. The inner shell upper shell and the inner shell lower shell are spliced ​​to form two partition structures 102 and three air valve installation positions, so that the air valve 300 is located in the corresponding air valve installation position, and there is a partition structure 102 between two adjacent air valve installation positions, so that the air outlets of each air outlet are relatively independent. The guide plate 400 is arranged corresponding to the partition structure 102, and is arranged on the side of the partition structure 102 close to the air inlet. The rotation axis of the guide plate 400 is arranged close to the partition structure 102. By adjusting the angle of the guide plate 400, the fresh air can be evenly guided to the air valve 300 between the corresponding two adjacent partition structures 102.

[0011] The guide plate 400 includes a plate body 401 and a plate shaft 402 which are integrally connected. The rotation axis of the guide plate 400 is the axis of the plate shaft 402. Along the up and down directions, the plate shaft 402 is rotatably connected to the upper wall and the lower wall of the box body 100 respectively. The gaps between the upper side of the plate body 401 and the upper wall of the box body 100, and between the lower side of the plate body 401 and the lower wall of the box body 100 are matched to enhance the diversion effect and avoid air leakage above and below the guide plate 400.

[0012] The power for the rotation of the guide plate 400 is provided by the first driving device 500, and the first driving device 500 includes a device body and a power output shaft. The device body of the first driving device 500 is arranged outside the box body 100, and is located on the upper side of the box body 100. The power output shaft of the first driving device 500 passes through the upper wall of the box body 100 and is connected to the plate rotating shaft 402 of the corresponding guide plate 400. The connection structure is a structure in which a non-circular column is inserted into a non-circular groove / hole, so that the power output shaft of the first driving device 500 can drive the guide plate 400 to rotate.

[0013] See also Figures 5 to 10 The air valve 300 includes two air valve units 301, a connecting frame 302 and an outer frame 303. The two air valve units 301 are fixed to the upper side and the lower side of the connecting frame 302 respectively. The air valve units 301 and the connecting frame 302 are located in the outer frame 303. The air valve unit 301 includes an air valve bracket 1. The air valve bracket 1 includes a blade bracket 11 and a control box 12. The blade bracket 11 is a U-shaped structure with an open end and a closed end. The open end of the blade bracket 11 is fixedly connected to the control box 12. The control box 12 includes a cover 122 and a box body 121. The box body 121 has a closed end and an open end. The blade bracket 11 is fixed to the closed end of the box body 121 by screws, and the cover 122 is fixed to the open end of the box body 121 by screws.

[0014] The air valve unit 301 includes two blades, namely, an active blade 2a and a driven blade 2b. The active blade 2a and the driven blade 2b are both rotatably mounted on the control box 12 at one end and rotatably mounted on the closed end of the blade bracket 11 at the other end. The two blades of the air valve unit 301 have the same structure, see Figure 11-3 A blade includes two plates 21 and two shafts 22. The two plates 21 are stacked in an offset manner to form a plate assembly, and the overlapping area is 1 / 3 of the plate area. The two shafts 22 are respectively arranged at both ends of the plate assembly, and the shafts 22 and the plate assembly are fixed together by screws 23.

[0015] The air valve unit 301 also includes two gears (respectively a driving gear 3a and a driven gear 3b) arranged in the control box 12, a second driving device 4 and a stopper 5, the driving gear 3a is connected to the driving blade 2a, the driven gear 3b is connected to the driven blade 2b, the axes of the driving blade 2a, the driven blade 2b, the driving gear 3a and the driven gear 3b are parallel, the driving end 41 of the second driving device 4 is connected to the driving gear 3a to drive the driving gear 3a to rotate, the driven gear 3b is meshed with the driving gear 3a, and is driven by the driving gear 3a to rotate, so as to realize the split-type synchronous rotation of the driving blade 2a and the driven blade 2b, see Fig.13 When the opening of the air valve unit 301 is less than the maximum opening, the active blade 2a and the driven blade 2b form a " / \"-shaped split structure. When the fresh air flows into the air valve unit 301 from the large mouth end of the " / \"-shaped split structure, it can flow out of the air valve unit 301 from the small mouth end of the " / \"-shaped split structure with a higher passing efficiency.

[0016] The connection structures between the driving gear 3a and the driving blade 2a, between the driven gear 3b and the driven blade 2b, and between the driving end 41 of the second driving device 4 and the driving gear 3a are all structures in which a non-circular column is inserted into a non-circular groove / hole, so that the driving gear 3a and the driving blade 2a, the driven gear 3b and the driven blade 2b, and the driving end 41 of the second driving device 4 and the driving gear 3a cannot rotate in the circumferential direction; the second driving device 4 is fixed in the box body 121 by two screws, and the driving gear 3a is axially fixed at the same time; the limiter 5 is fixed in the box body 121 by two screws, and the driven gear 3b is axially fixed. The two gear structures of the air valve unit 301 are the same, see Figure 11-1 , a gear has a square column 31, and the square column 31 of the driving gear 3a is inserted into the square groove 221 on the shaft 22 connecting the driving blade 2a and the control box 12. Figure 11-2 The driving end 41 of the second driving device 4 is a non-circular structure and is inserted into the non-circular groove 32 on the driving gear 3a.

[0017] The control box 12 is also provided with an opening limit structure and a closing limit structure. The box body 121 has two first columns (first column 1 61b and first column 2 62) and a second column 61a integrally connected to the box body 121. The axis of the first column is parallel to the axis of the driven gear 3b, and the axis of the second column 61a is parallel to the axis of the driving gear 3a. The two first columns are used to fix the limit member 5. The two ends of the limit member 5 are respectively fixed to the two first columns by screws, and the axis of the screws coincides with the axis of the first column. The opening limit structure includes the first column 1 61b and the second column 61a, and the closing limit structure includes the first column 2 62. The opening limit structure is used to prevent the driving gear 3a and the driven gear 3b from continuing to rotate when the second driving device 4 drives the driving gear 3a to rotate in the direction of opening the air valve until the air valve unit 301 is in the maximum open state; the closing limit structure is used to prevent the driving gear 3a and the driven gear 3b from continuing to rotate when the second driving device 4 drives the driving gear 3a to rotate in the direction of closing the air valve until the air valve unit 301 is in the closed state. The air valve opening direction refers to the direction in which the second driving device 4 drives the driving gear 3a to rotate in order to open the air valve unit 301, and the air valve closing direction refers to the direction in which the second driving device 4 drives the driving gear 3a to rotate in order to close the air valve unit 301. The driven gear 3b is driven to rotate by the driving gear 3a, and its rotation direction is opposite to that of the driving gear 3a, see Fig.12 When the air valve unit 301 is switched from closed to open, the active blade 2a rotates clockwise with the active gear 3a, and the driven blade 2b rotates counterclockwise with the driven gear 3b, and the active blade 2a and the driven blade 2b are opened synchronously in a split-open manner.

[0018] The driving gear 3a and the driven gear 3b are fan-shaped structures with an angle greater than 90°. Compared with circular gears, fan-shaped gears save more space. When the air valve unit 301 is changed from the closed state to the maximum open state, the driving gear 3a and the driven gear 3b rotate 90°, from the driven gear 3b abutting against the first column 62 to the driving gear 3a abutting against the second column 61a and the driven gear 3b abutting against the first column 61b.

[0019] See also Fig.13 Two wind shields (respectively wind shield 1 111a and wind shield 2 111b) are also provided on the blade bracket 11. When the air valve unit 301 is in a closed state, wind shield 1 111a is used to prevent air leakage between the active blade 2a and the blade bracket 11, and wind shield 2 111b is used to prevent air leakage between the driven blade 2b and the blade bracket 11.

[0020] See also Fig.15Different air outlets supply air to different spaces through different air supply ducts Z. A wind speed sensor is provided in the air supply duct Z. The wind speed sensor and the air conditioner indoor unit X are electrically connected to the control device 200 respectively. The control device 200 stores a computer program / instruction. When the computer program / instruction is executed by the control device 200, the following control method is implemented: Steps to adjust the deflector angle: Step S11: when the air box Y and the air conditioner indoor unit X are first powered on after being installed, the second driving device 4 is controlled to make each air valve unit 301 in the maximum open state (that is, the two blades of the air valve unit 301 are parallel); “The first time the air distribution box Y and the air conditioner indoor unit X are turned on after being installed” includes the following two situations: 1. The air distribution box Y and the air conditioner indoor unit X are installed at the current position for the first time, and the air distribution box Y and the air conditioner indoor unit X are turned on to adjust the angle of the guide plate before they are officially put into use; 2. The air distribution box Y and the air conditioner indoor unit X have been installed at the current position before, but the structure of the air supply duct Z has been readjusted, and / or the air inlet and / or the air outlet has been changed, and the air distribution box Y and the air conditioner indoor unit X are turned on to adjust the angle of the guide plate before they are put into use again.

[0021] Step S12: According to the real-time wind speed data fed back by each wind speed sensor, the first driving device 500 is controlled to adjust the angle of the guide plate 400 until the difference between the maximum and minimum values ​​of the real-time wind speed data fed back by each wind speed sensor is less than a preset first difference.

[0022] Air valve opening adjustment steps: Step S2: After step S12, after receiving the air-conditioning instruction of the corresponding space, the opening degree of the corresponding air valve unit 301 is adjusted by controlling the corresponding second driving device 4 according to the target temperature data and real-time temperature data of the corresponding space.

[0023] Step S2 includes: Step S21: after receiving the air-conditioning-on instruction of the corresponding space, when the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is less than the second difference, the corresponding air valve unit 301 is adjusted to the first opening; when the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is greater than the third difference, the corresponding air valve unit 301 is adjusted to the maximum opening (that is, the two blades of the air valve unit 301 are parallel); if the air-conditioning indoor unit X is turned off when the air-conditioning-on instruction of the corresponding space is received, the air-conditioning indoor unit X is turned on first, and then the corresponding air valve unit 301 is adjusted according to the relationship between the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space and the second difference and the third difference.

[0024] Step S22: When the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is not less than the second difference and not greater than the third difference, if the real-time wind speed data of the corresponding wind speed sensor is greater than the preset target wind speed data, the corresponding air valve unit 301 is adjusted to the second opening; if the real-time wind speed data of the corresponding wind speed sensor is less than the preset target wind speed data, the corresponding air valve unit 301 is adjusted to the third opening; the maximum opening>the third opening>the second opening>the first opening.

[0025] After receiving the air-conditioning off command for the corresponding space, the corresponding air valve unit 301 is adjusted to the closed state. After receiving the air-conditioning off command for the air-conditioning indoor unit X, the air-conditioning indoor unit X is turned off and each air valve unit 301 is adjusted to the closed state. Embodiment 2

[0026] The difference between this embodiment and the first embodiment lies in the blade structure of the air valve unit, see Fig.14 In this embodiment, one side of the blades of the air valve unit 301' (the upper side of the active blade 2a' and the lower side of the driven blade 2b') is a guide side of an arc structure, and the angle d2 corresponding to the arc structure is 44°. When the air valve unit 301' is opened and the opening is less than the maximum opening, the guide sides of the two blades face each other, which has a guiding effect on the fresh air passing through between the two blades.

Claims

1. A wind box, comprising a box body and a control device, wherein the box body has an air inlet and at least two air outlets, and an air valve is arranged in the air outlet, characterized in that: At least one rotatable guide plate is also provided between the air inlet and the air outlet in the box body. The guide plate is used to guide the fresh air entering the air distribution box from the air inlet to each air outlet. The guide plate is connected to a first driving device, and the first driving device is used to drive the guide plate to rotate. The control device is electrically connected to the first driving device to control the rotation angle of the guide plate; the air valve includes at least one air valve unit, and the air valve unit includes two blades and a second driving device. The second driving device is used to drive the two blades to rotate synchronously in an opposite manner. The control device is electrically connected to the second driving device to control the rotation angle of the two blades and change the opening of the air valve unit.

2. The air distribution box according to claim 1, characterized in that: The two blades of the air valve unit are respectively an active blade and a driven blade. The air valve unit also includes an air valve bracket, a driving gear, a driven gear, an opening limit structure and a closing limit structure. The active blade and the driven blade are rotatably mounted on the air valve bracket. The driving gear is connected to the active blade, and the driven gear is connected to the driven blade. The axes of the active blade, the driven blade, the active gear and the driven gear are parallel. The driving end of the second driving device is connected to the driving gear to drive the driving gear to rotate. The driven gear is meshed with the driving gear to be driven by the driving gear to rotate, so as to realize the split-type synchronous rotation of the active blade and the driven blade; the opening limit structure and the closing limit structure are arranged on the air valve bracket. The opening limit structure is used to prevent the active gear and the driven gear from continuing to rotate when the active gear rotates in the direction of opening the air valve until the air valve unit is in the maximum opening state; the closing limit structure is used to prevent the active gear and the driven gear from continuing to rotate when the active gear rotates in the direction of closing the air valve until the air valve unit is in the closed state.

3. The air distribution box according to claim 2, characterized in that: The air valve bracket includes a blade bracket and a control box; the blade bracket is a U-shaped structure, having an open end and a closed end; the open end of the blade bracket is fixedly connected to the control box; the active blade and the driven blade are both rotatably mounted on the control box at one end, and rotatably mounted on the closed end of the blade bracket at the other end; the active gear, the driven gear, the second drive device, the opening limit structure and the closing limit structure are all arranged in the control box; the control box includes a cover body and a box body, the box body has a closed end and an open end, and the cover body and the blade bracket are respectively fixed to the open end and the closed end of the box body in a detachable manner.

4. The air distribution box according to claim 3, characterized in that: The connection structures between the driving gear and the driving blade, between the driven gear and the driven blade, and between the second driving device and the driving gear are all structures in which a non-circular column is inserted into a non-circular groove / hole, so that the driving gear can drive the driving blade, the driven gear can drive the driven blade, and the second driving device can drive the driving gear to rotate; the second driving device is fixed in the box body in a detachable manner, and the axial fixation of the driving gear is achieved at the same time; there is also a limiter in the box body, which is fixed in the box body in a detachable manner to achieve the axial fixation of the driven gear.

5. The air distribution box according to claim 4, characterized in that: Both the driving gear and the driven gear are fan-shaped gears. There are two first cylinders and one second cylinder in the box body. The axis of the first cylinder is parallel to the axis of the driven gear. One first cylinder belongs to the opening limit structure, and the other first cylinder belongs to the closing limit structure. The axis of the second cylinder is parallel to the axis of the driving gear. The second cylinder belongs to the opening limit structure. The two ends of the limit member are respectively fixed to the two first cylinders by screws, and the axis of the screws coincides with or is parallel to the axis of the first cylinder.

6. The air distribution box according to claim 2, characterized in that: The two blades of the air valve unit have the same structure, both including two plates and two shafts. The two plates are staggered and stacked to form a plate assembly. The two shafts are respectively arranged at both ends of the plate assembly, and the shafts and the plate assembly are fixed together by screws.

7. The air distribution box according to claim 1, characterized in that: The two blades of the air valve unit have the same structure, both of which have a guide side with an arc-shaped structure. When the air valve unit is opened and the opening is less than the maximum opening, the guide sides of the two blades are opposite to each other, which has a guiding effect on the fresh air passing through between the two blades.

8. The air distribution box according to claim 1, characterized in that: A partition structure is provided between adjacent air valves, and a guide plate is provided corresponding to the partition structure and is arranged on a side of the partition structure close to the air inlet, and a rotation axis of the guide plate is arranged close to the partition structure.

9. The air distribution box according to claim 8, characterized in that: The rotation axis of the guide plate is along the up and down direction. The guide plate includes a plate body and a plate rotation shaft. The plate rotation shaft is rotatably connected to the upper wall and the lower wall of the box body respectively, and there is a clearance fit between the upper side of the plate body and the upper wall of the box body, and between the lower side of the plate body and the lower wall of the box body; the first drive device includes a device body and a power output shaft. The device body of the first drive device is arranged outside the box body, located on the upper side of the box body, and the power output shaft of the first drive device passes through the upper wall of the box body and is connected to the plate rotation shaft of the guide plate, so that the power output shaft of the first drive device can drive the guide plate to rotate; the control device is arranged outside the box body, located on the lower side of the box body.

10. The air distribution box according to claim 9, characterized in that: The box body includes an outer shell assembly and an inner shell assembly, the inner shell assembly is located inside the outer shell assembly, the guide plate and the air valve are located inside the inner shell assembly, the inner shell assembly includes an inner shell upper shell and an inner shell lower shell spliced ​​together, the inner shell upper shell and the inner shell lower shell are spliced ​​together to form a partition structure and an air valve installation position, and the air valve is located in the corresponding air valve installation position; each air valve includes two air valve units, a connecting frame and an outer frame, the two air valve units are respectively fixed on the upper and lower sides of the connecting frame, the four blades are parallel, and the air valve unit and the connecting frame are located inside the outer frame.

11. A control method for a wind box, characterized in that: The air distribution box is an air distribution box according to any one of claims 1 to 10, at least two air outlets of the air distribution box are connected to air supply ducts, different air outlets supply air to different spaces through different air supply ducts, a wind speed sensor is provided in the air supply duct, the air inlet of the air distribution box is connected to an air conditioner indoor unit, the wind speed sensor and the air conditioner indoor unit are electrically connected to the control device of the air distribution box respectively, the control device of the air distribution box stores a computer program / instruction, when the computer program / instruction is executed by the control device, the steps of the control method are implemented, and the control method includes: Steps to adjust the deflector angle: Step S11: When the wind box is turned on for the first time, the second driving device is controlled to make each air valve unit in the maximum open state; Step S12: adjusting the deflector angle by controlling the first driving device according to the real-time wind speed data fed back by each wind speed sensor until the difference between the maximum value and the minimum value of the real-time wind speed data fed back by each wind speed sensor is less than a preset first difference; Air valve opening adjustment steps: Step S2: After step S12, after receiving the air-conditioning instruction of the corresponding space, the opening degree of the corresponding air valve unit is adjusted by controlling the corresponding second driving device according to the target temperature data and real-time temperature data of the corresponding space.

12. The control method according to claim 11, characterized in that: Step S2 includes: Step S21: after receiving the air-conditioning-on instruction of the corresponding space, when the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is less than the second difference, the corresponding air valve unit is adjusted to the first opening degree; when the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is greater than the third difference, the corresponding air valve unit is adjusted to the maximum opening degree; Step S22: When the absolute value of the difference between the target temperature data and the real-time temperature data of the corresponding space is not less than the second difference and not greater than the third difference, if the real-time wind speed data of the corresponding wind speed sensor is greater than the preset target wind speed data, the corresponding air valve unit is adjusted to the second opening; if the real-time wind speed data of the corresponding wind speed sensor is less than the preset target wind speed data, the corresponding air valve unit is adjusted to the third opening; the maximum opening > the third opening > the second opening > the first opening.

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