Air valve structure

Abstract

The utility model relates to heating and ventilation equipment, in particular to an air valve structure. The air valve structure comprises at least one air valve unit, each air valve unit comprises an air valve support, a driving blade, a driven blade, a driving gear, a driven gear, a driving device, an opening limiting structure and a closing limiting structure, and the driving blades and the driven blades are rotatably installed on the air valve supports. The driving gear is connected with the driving blade, the driven gear is connected with the driven blade, the driving end of the driving device is connected with 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, and split synchronous rotation of the driving blade and the driven blade is achieved. When the opening degree of the air valve unit is smaller than the maximum opening degree, the driving blades and the driven blades form a ' / '-shaped split structure, and when fluid flows into the air valve unit from the large opening end of the ' / '-shaped split structure, high passing efficiency can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heating and ventilation equipment, in particular to a wind valve structure. BACKGROUND

[0002] The main machine of the heating and ventilation equipment delivers the processed air to each indoor space through the air distribution box, the air distribution box has an air inlet connected with the main machine and a plurality of air outlets, different air outlets are connected with different pipelines to deliver the air from the air inlet to different indoor spaces. The static pressure air distribution box recorded in patent document CN112303785A is different from the traditional air distribution box in that each air outlet has a corresponding wind valve (i.e. "air outlet valve assembly"), which can adjust the opening of each wind valve according to the individualized setting of each indoor space to change the air supply to each indoor space.

[0003] Referring to the drawings of the patent document Figure 2 The wind valve only has one blade (i.e. "air outlet door"), and this kind of wind valve structure has the following problems: referring to the drawings of the utility model specification Figure 1 The arrowed line represents the flow direction, when the wind valve opening is less than the maximum opening, the fluid is blocked by the blade P1 and needs to turn to the gap above and below the blade P1 to pass through, the passing efficiency is low, and the risk of noise generated by the wind valve is high. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is how to improve the fluid passing efficiency of the wind valve.

[0005] To solve the above technical problems, the utility model provides a wind valve structure, which comprises at least one wind valve unit, the wind valve unit comprises a wind valve support, one active blade, one driven blade, one active gear, one driven gear, one driving device, opening limiting structure and closing limiting structure, the active blade and the driven blade are rotatably installed on the wind valve support, the active gear is connected with the active blade, the driven gear is connected with 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 driving device is connected with the active gear to drive the rotation of the active gear, the driven gear is engaged with the active gear to be driven to rotate by the active gear, realizing the synchronous rotation of the active blade and the driven blade in the opposite opening mode; the opening limiting structure and the closing limiting structure are arranged on the wind valve support, the opening limiting structure is used to prevent the continuous rotation of the active gear and the driven gear when the active gear rotates to the maximum opening state of the wind valve unit in the opening direction of the wind valve; and the closing limiting structure is used to prevent the continuous rotation of the active gear and the driven gear when the active gear rotates to the closed state of the wind valve unit in the closing direction of the wind valve.

[0006] The power transmission from the driving device to the driving gear, from the driving gear to the driven gear realizes the synchronous rotation of the driving blade and the driven blade in a simple and reliable structure, when the opening degree of the air valve unit is less than the maximum opening degree, the driving blade and the driven blade form a "V" shape split structure, when the fluid flows into the air valve unit from the large end of the "V" shape split structure, the fluid can directly flow out of the air valve unit from the small end of the "V" shape split structure, the blade has a guiding effect on the fluid, the fluid has a small resistance to the blade, and the air valve has a higher passing efficiency compared with the existing air valve structure.

[0007] The skilled person in the art can design the structure of the air valve support according to the needs, for example, the air valve support includes a blade support and a control box; the blade support is a U-shaped structure with an open end and a closed end; the open end of the blade support is fixedly connected with the control box; the driving blade and the driven blade are rotatably installed on the control box at one end and rotatably installed on the closed end of the blade support at the other end; the driving gear, the driven gear, the driving device, the opening limiting structure and the closing limiting structure are all arranged in the control box and protected by the control box, and at the same time, the air valve unit is a relatively independent module, which is convenient for combining the air valve units according to the needs.

[0008] 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 support are detachably fixed at the open end and the closed end of the box body, respectively, which is convenient for the maintenance of the air valve unit. The open end of the box body has a wiring groove for the power supply line and the control line of the driving device.

[0009] The connection structures between the driving gear and the driving blade, between the driven gear and the driven blade, and between the driving end of the driving device and the driving gear are all non-circular column inserted into non-circular groove / hole structures, so that the driving gear and the driving blade, the driven gear and the driven blade, and the driving end of the driving device and the driving gear cannot rotate circumferentially; the driving device is detachably fixed in the box body, which simultaneously realizes the axial fixation of the driving gear; the box body also has a limiting piece which is detachably fixed in the box body to realize the axial fixation of the driven gear. The non-circular column inserted into the non-circular groove / hole connection structure makes the driving gear and the driving blade, the driven gear and the driven blade, and the driving device and the driving gear easy to disassemble. The skilled person in the art can also change the connection structures between the driving gear and the driving blade, between the driven gear and the driven blade, and between the driving device and the driving gear according to the needs, for example, by using fasteners.

[0010] The opening limiting structure and the closing limiting structure can be designed by those skilled in the art according to requirements, for example, two first column bodies are arranged in the box body, the axis of the first column body is parallel to the axis of the driven gear, and the two ends of the limiting piece are fixed on the two first column bodies by screws, the axis of the screw is coincident with or parallel to the axis of the first column body; the driven gear is a sector gear, one first column body belongs to the opening limiting structure, and the other first column body belongs to the closing limiting structure; the first column body is used for fixing the limiting piece and limiting the rotation range of the driven gear, and is beneficial to simplifying the structure in the control box.

[0011] The driving gear is a sector gear, a second column body is arranged in the box body, the axis of the second column body is parallel to the axis of the driving gear, and the second column body belongs to the opening limiting structure. Whether the driving gear is first blocked by the second column body or the driven gear is first blocked by the first column body (the opening limiting structure), the driving device stops rotating the driving gear, which is beneficial to protecting the driving gear and the driven gear.

[0012] The driving blade and the driven blade can be designed by those skilled in the art according to requirements, for example, the driving blade and the driven blade are of the same structure, the driving blade comprises two plate pieces and two shaft bodies, the two plate pieces are arranged in a staggered manner and are combined to form a plate piece combination, and the two shaft bodies are arranged at two ends of the plate piece combination and are fixed to the plate piece combination by screws. The two plate pieces are arranged in a staggered manner and are combined to form a plate piece combination, and the two shaft bodies are arranged at two ends of the plate piece combination and are fixed to the plate piece combination by screws. The two plate pieces are arranged in a staggered manner and are combined to form a plate piece combination, and the two shaft bodies are arranged at two ends of the plate piece combination and are fixed to the plate piece combination by screws. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a wind direction schematic view of an existing air valve structure;

[0014] Figure 2 It is a perspective view of an air valve structure of the utility model;

[0015] Figure 3 It is Figure 2 It is an explosion view of the air valve structure shown in the figure;

[0016] Figure 4 It is Figure 3 It is an explosion view of the air valve unit shown in the figure;

[0017] Figure 5 It is Figure 4 It is an explosion view of A in the figure;

[0018] Figure 6 It is Figure 5 It is an explosion view of B in the figure;

[0019] Figure 7 It is Figure 5 It is a perspective view of the driving gear shown in the figure;

[0020] Figure 8 For Figure 5 the perspective view of the driving device shown in the figure;

[0021] Figure 9 For Figure 5 the exploded view of the active blade shown in the figure;

[0022] Figure 10 For Figure 2 the sectional view of the air valve structure from the closed state to the maximum open state;

[0023] Figure 11 For Figure 2 the wind direction diagram of the air valve structure shown in the figure. DETAILED DESCRIPTION

[0024] The air valve structure provided by the utility model can include one, two or more air valve units, and the air valve units can be connected through the connecting frame. Figure 2 The air valve structure includes two air valve units 100, as shown in Figure 2 and 3 The two air valve units 100 are connected through the connecting frame 200, mounting holes are arranged on the air valve unit 100 and the connecting frame 200, and the air valve unit 100 is fixedly connected with the connecting frame 200 through the fastener 300 penetrating through the mounting hole.

[0025] The air valve unit 100 includes the air valve support 1, and the air valve support 1 includes the blade support 11 and the control box 12, as shown in Figure 6 The blade support 11 is a U-shaped structure and has an open end and a closed end, and the open end of the blade support 11 is fixedly connected with the control box 12. Figure 4 The control box 12 includes the cover body 122 and the box body 121, the box body 121 has a closed end and an open end, the blade support 11 is fixed on the closed end of the box body 121 through a screw, and the cover body 122 is fixed on the open end of the box body 121 through a screw.

[0026] The air valve unit 100 includes one active blade 2a and one driven blade 2b, and the active blade 2a and the driven blade 2b are rotatably installed on the control box 12 at one end and rotatably installed on the closed end of the blade support 11 at the other end. Figure 9 The active blade 2a includes two plate members 21 and two shaft bodies 22, the two plate members 21 are arranged in a staggered manner and are stacked to form a plate member combination, and the overlapping area is 1 / 3 of the area of the plate member. The two shaft bodies 22 are arranged at the two ends of the plate member combination, and the shaft body 22 and the plate member combination are fixed together through the screw 23. The driven blade 2b is the same in structure as the active blade 2b.

[0027] As shown in Figures 4 to 8, the wind valve unit 100 further comprises a driving gear 3a, a driven gear 3b, a driving device 4 and a limiting member 5 arranged in the control box 12, the driving gear 3a is connected with the driving blade 2a, the driven gear 3b is connected with 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 of the driving device 4 is connected with the driving gear 3a to drive the driving gear 3a to rotate, the driven gear 3b is engaged with the driving gear 3a to be driven to rotate by the driving gear 3a, so as to realize the synchronous opening of the driving blade 2a and the driven blade 2b in a split type, see Figure 11 When the opening degree of the wind valve unit 100 is less than the maximum opening degree, the driving blade 2a and the driven blade 2b form a “ / ” shape split structure, when the fluid flows into the wind valve unit 100 from the large end of the “ / ” shape split structure, the fluid can flow out of the wind valve unit 100 from the small end of the “ / ” shape split structure with high passing efficiency.

[0028] 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 driving device 4 and the driving gear 3a are all structures of non-circular column inserted into non-circular groove / hole, so that the driving gear 3a, the driven gear 3b and the driving end 41 of the driving device 4 cannot rotate circumferentially, so that the driving gear 3a can drive the driving blade 2a to rotate, the driven gear 3b can drive the driven blade 2b to rotate, and the driving end 41 of the driving device 4 can drive the driving gear 3a to rotate; the driving device 4 is fixed in the box body 121 by two screws, and at the same time, the axial fixation of the driving gear 3a is realized; the limiting member 5 is fixed in the box body 121 by two screws, and the axial fixation of the driven gear 3b is realized. See Figure 7 The driving gear 3a has a square column 31 inserted into the square groove 221 on the shaft body 22 connected with the driving blade 2a and the control box 12. The driven gear 3b has the same structure as the driving gear 3a. See Figure 8 The driving end 41 of the driving device 4 is a non-circular structure inserted into the non-circular groove 32 on the driving gear 3a.

[0029] The control box 12 further comprises opening limiting structure and closing limiting structure, see Figure 5 and 10, the box body 121 has two first columns (first column 61b and first column 62) and a second column 61a integrally connected with the box body 121, the axis of the first column is parallel to the axis of the driven gear 3b, the axis of the second column 61a is parallel to the axis of the driving gear 3a, and the two first columns are two columns for fixing the limiting piece 5, the two ends of the limiting piece 5 are fixed on the two first columns by screws respectively, and the axis of the screw coincides with the axis of the first column. The opening limiting structure includes the first column 61b and the second column 61a, and the closing limiting structure includes the first column 62. The opening limiting structure is used to prevent the driving gear 3a and the driven gear 3b from continuing to rotate when the driving device 4 drives the driving gear 3a to rotate to the opening air valve direction until the air valve unit 100 is in the maximum opening state; the closing limiting structure is used to prevent the driving gear 3a and the driven gear 3b from continuing to rotate when the driving device 4 drives the driving gear 3a to rotate to the closing air valve direction until the air valve unit 100 is in the closing state. Figures 2 to 6 The air valve unit 100 is in the closing state. The opening air valve direction refers to the direction in which the driving device 4 drives the driving gear 3a to rotate to open the air valve unit 100, and the closing air valve direction refers to the direction in which the driving device 4 drives the driving gear 3a to rotate to close the air valve unit 100. The driven gear 3b is driven to rotate by the driving gear 3a, and the direction of rotation is opposite to that of the driving gear 3a, see Figure 11 The air valve unit 100 is opened from the closing state to the opening state, the driving blade 2a rotates clockwise with the driving gear 3a, and the driven blade 2b rotates counterclockwise with the driven gear 3b, and the driving blade 2a and the driven blade 2b are opened synchronously.

[0030] Referring to Figure 10 The driving gear 3a and the driven gear 3b are fan-shaped structures greater than 90°, and compared with circular gears, the fan-shaped gears save more space. From the closing state to the maximum opening state of the air valve unit 100, the driving gear 3a and the driven gear 3b rotate 90°, and 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.

[0031] Referring to Figure 11 The blade support 11 is also provided with two wind blocking pieces 111a and 111b, and when the air valve unit 100 is in the closing state, the wind blocking piece 111a is used to prevent air leakage between the driving blade 2a and the blade support 11, and the wind blocking piece 111b is used to prevent air leakage between the driven blade 2b and the blade support 11.

Claims

1. A damper structure, comprising at least one damper unit, wherein the damper unit includes a damper support, characterized in that: The damper unit also includes a driving blade, a driven blade, a driving gear, a driven gear, a drive device, an opening limit structure, and a closing limit structure. The driving blade and the driven blade are rotatably mounted on the damper bracket. The driving gear is connected to the driving blade, and the driven gear is connected to the driven blade. The axes of the driving blade, the driven blade, the driving gear, and the driven gear are parallel. The drive end of the drive device is connected to the driving gear to drive the driving gear to rotate. The driven gear meshes with the driving gear to be driven to rotate by the driving gear, realizing the synchronous rotation of the driving blade and the driven blade. The opening limit structure and the closing limit structure are set on the damper bracket. The opening limit structure is used to prevent the driving gear and the driven gear from continuing to rotate when the driving gear rotates in the direction of opening the damper to the maximum opening state of the damper unit. The closing limit structure is used to prevent the driving gear and the driven gear from continuing to rotate when the driving gear rotates in the direction of closing the damper to the closed state of the damper unit.

2. The air valve structure as described in claim 1, characterized in that: The damper bracket includes a blade bracket and a control box; the blade bracket has a U-shaped structure with an open end and a closed end; the open end of the blade bracket is fixedly connected to the control box; both the driving blade and the driven blade are 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 driving gear, driven gear, drive device, opening limit structure and closing limit structure are all located inside the control box.

3. The air valve structure as described in claim 2, characterized in that: The control box includes a cover and a housing. The housing has a closed end and an open end. The cover and the blade support are respectively detachably fixed to the open end and the closed end of the housing.

4. The damper structure as described in 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 driving end of the drive device and the driving gear are all non-circular cylinders inserted into non-circular slots / holes, so that the driving gear can drive the driving blade, the driven gear can drive the driven blade, and the driving end of the drive device can drive the driving gear to rotate; the drive device is detachably fixed in the box, which also achieves axial fixation of the driving gear; there is also a limiting member in the box, which is detachably fixed in the box, achieving axial fixation of the driven gear.

5. The air valve structure as described in claim 4, characterized in that: The box contains two first pillars, the axis of which is parallel to the axis of the driven gear. The two ends of the limiting member are fixed to the two first pillars by screws, the axis of which coincides with or is parallel to the axis of the first pillar. The driven gear is a sector gear. One first pillar is an opening limiting structure and the other first pillar is a closing limiting structure.

6. The damper structure as described in claim 5, characterized in that: The driving gear is a sector gear, and there is a second column inside the housing. The axis of the second column is parallel to the axis of the driving gear, and the second column is an opening limit structure.

7. The damper structure as described in claim 3, characterized in that: The box has a cable routing groove at the open end for the power and control cables of the drive unit to pass through.

8. The air valve structure as described in claim 1, characterized in that: The active blade and the driven blade have the same structure; the active blade includes two plates and two shafts. The two plates are stacked in a staggered manner to form a plate assembly. The two shafts are respectively located at both ends of the plate assembly. The shafts are fixed to the plate assembly with screws.

9. The damper structure as described in any one of claims 1 to 8, characterized in that: The air valve structure includes at least two air valve units and at least one connecting frame. The at least two air valve units are connected by the at least one connecting frame. Both the air valve bracket and the connecting frame are provided with mounting holes. The air valve units are fixedly connected to the connecting frame by fasteners passing through the mounting holes.

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