Miniature rotary air valve

Abstract

The utility model relates to a miniature rotary air valve, and belongs to the technical field of air valves, the miniature rotary air valve comprises a shell, and the shell is provided with an upper fan blade, a lower fan blade and a rotating assembly used for driving the upper fan blade to rotate relative to the lower fan blade; the side walls, close to each other, of the upper fan blade and the lower fan blade abut against each other, an upper air hole is formed in the upper fan blade, a lower air hole is formed in the lower fan blade, and the upper air hole and the lower air hole are communicated and staggered. The rotating assembly comprises a rotating motor and a connecting rod, the connecting rod penetrates through the shell and is fixedly connected with the upper fan blade, and the rotating motor is fixed to the shell and used for driving the connecting rod to rotate; the manual climate box has the effect that the manual climate box can also achieve internal and external air volume exchange in a low-pressure or non-pressure state.

Description

Technical Field

[0001] This application relates to the technical field of air valves, and in particular to a miniature rotary air valve. Background Technology

[0002] Currently, artificial climate chambers are high-precision temperature control devices with lighting and humidification functions, providing users with an ideal artificial climate experimental environment.

[0003] Artificial climate chambers are equipped with air valves to regulate and control airflow inside, optimizing temperature and humidity control. Existing air valves rely on gravity and wind power to open and close.

[0004] In actual use, the air valve cannot open and close properly when the wind force is low, the pressure is low, or there is no pressure, which is a defect that makes it difficult to meet the air volume adjustment needs of the artificial climate chamber under different pressure environments. Utility Model Content

[0005] In order to enable the exchange of internal and external air volume in an artificial climate chamber under low or no pressure, this application provides a miniature rotary valve.

[0006] The miniature rotary damper provided in this application adopts the following technical solution:

[0007] A miniature rotary damper includes a housing with an upper fan blade, a lower fan blade, and a rotating assembly for driving the upper fan blade to rotate relative to the lower fan blade. The sidewalls of the upper and lower fan blades abut against each other. The upper fan blade has an upper airflow hole, and the lower fan blade has a lower airflow hole. The upper and lower airflow holes are connected and misaligned. The rotating assembly includes a rotary motor and a connecting rod. The connecting rod passes through the housing and is fixedly connected to the upper fan blade. The rotary motor is fixed to the housing to drive the connecting rod to rotate. The lower fan blade is fixed to the housing.

[0008] By adopting the above technical solution, the outer shell is fixed on the artificial climate chamber. The connecting rod is driven to rotate by a rotary motor. Then, the connecting rod drives the upper fan blade to rotate relative to the lower fan blade. The opening and closing of the air valve is controlled by controlling whether the upper air hole and the lower air hole are connected, so that the artificial climate chamber can achieve the exchange of internal and external air volume even in the low pressure or no pressure state.

[0009] Optionally, the rotary motor is a hollow shaft motor; one end of the connecting rod passes through the rotary motor, and the other end completely protrudes through the upper fan blade; a cylindrical groove is provided on the lower fan blade, and the end of the connecting rod protruding from the upper fan blade is located in the cylindrical groove.

[0010] By adopting the above technical solution, the shaft of the hollow shaft motor is hollow in the middle, which makes it easy for the connecting rod to pass through the rotating motor. At the same time, it also leaves a space on the connecting rod for subsequent structures. The end of the connecting rod protrudes from the rotating motor, which makes it easy to manually rotate the connecting rod, thereby realizing the manual adjustment of the air volume of the air valve.

[0011] Optionally, the connecting rod is provided with a positioning component and a locking component. The positioning component is located at the end of the connecting rod and on the side of the rotating motor away from the upper fan blade. The positioning component itself is shaped with a pointed tip for marking the rotation amplitude of the upper fan blade. The locking component is used to fix the positioning component to the connecting rod.

[0012] By adopting the above technical solution, the direction of the tip indicates to the operator the rotation angle of the upper fan blade relative to the lower fan blade, which makes it easier for the operator to rotate the connecting rod and adjust the air volume of the air valve.

[0013] Optionally, the outer shell includes an upper shell and a lower shell, with the lower shell fixedly connected to the upper shell. Both the upper and lower fan blades are located inside the lower shell. The upper fan blade is rotatably arranged relative to the outer shell, while the lower fan blade is fixed inside the lower shell. Both the upper and lower fan blades are cylindrical, and their centers are located on the center line of the connecting rod.

[0014] By adopting the above technical solution, the outer casing provides protection for the upper and lower fan blades, and at the same time, the relative positions of the upper and lower fan blades are initially determined.

[0015] Optionally, the total thickness of the upper and lower fan blades is 10 mm.

[0016] By adopting the above technical solution, the total thickness of the upper and lower fan blades is 10mm, which can further reduce the size of the entire air valve. The outer shell is connected to the side wall of the artificial climate chamber and is not included in the floor area of ​​the air valve. Therefore, the air valve does not occupy too much space after being connected to other equipment, thus expanding the application range of the miniature air valve.

[0017] Optionally, the diameter of the cylindrical groove is larger than the diameter of the connecting rod.

[0018] By adopting the above technical solution, the cylindrical groove can not only limit the position of the connecting rod, but also reduce the weight of the lower fan blade.

[0019] Optionally, the locking element is a U-bolt, which passes through the positioning element and locks onto the connecting rod.

[0020] By adopting the above technical solution, U-bolts are easy to install and disassemble.

[0021] Optionally, the upper and lower fan blades are made of heat-insulating material.

[0022] By adopting the above technical solution, the upper and lower fan blades are made of heat-insulating material, which makes it easier to maintain the temperature inside the artificial climate chamber.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The rotary motor drives the connecting rod to rotate, and then the connecting rod drives the upper fan blade to rotate relative to the lower fan blade. By controlling whether the upper air hole and the lower air hole are connected, the air valve is controlled to open or close, so that the artificial climate chamber can achieve the exchange of internal and external air volume even when the pressure is low or no pressure.

[0025] 2. The shaft of the hollow shaft motor is hollow in the middle, which makes it easy for the connecting rod to pass through the rotating motor. It also leaves room for subsequent structures on the connecting rod. The end of the connecting rod protrudes from the rotating motor, making it easy to manually rotate the connecting rod, thereby realizing the manual adjustment of the air volume of the damper.

[0026] 3. The pointing of the tip indicates the rotation angle of the upper fan blade relative to the lower fan blade, which makes it easy for the operator to rotate the connecting rod and adjust the air volume of the air valve. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0028] Figure 2 This is an exploded view of an embodiment of this application;

[0029] Figure 3 This is a partial structural cross-sectional view of the lower shell region.

[0030] In the diagram, 1 is the outer casing; 11 is the upper casing; 12 is the lower casing; 2 is the upper fan blade; 21 is the upper air vent; 3 is the lower fan blade; 31 is the lower air vent; 32 is the cylindrical groove; 4 is the rotating assembly; 41 is the rotating motor; 42 is the connecting rod; 5 is the positioning component; 51 is the tip; and 6 is the locking component. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0032] This application discloses a miniature rotary valve.

[0033] refer to Figure 1 and Figure 2 A miniature rotary damper includes a housing 1, which is fixedly connected to an artificial climate chamber. The housing 1 is provided with an upper fan blade 2, a lower fan blade 3, and a rotating assembly 4. The rotating assembly 4 drives the upper fan blade 2 to rotate relative to the lower fan blade 3, thereby controlling the opening and closing of the damper.

[0034] refer to Figure 1 and Figure 2 The outer casing 1 includes an upper casing 11 and a lower casing 12, with the lower casing 12 fixedly connected to the upper casing 11. The rotating assembly 4 includes a rotary motor 41 and a connecting rod 42. The rotary motor 41 is a hollow shaft motor, fixed to the side of the upper casing 11 away from the lower casing 12. One end of the connecting rod 42 passes through the hollow shaft of the rotary motor 41 and into the lower casing 12, and is fixedly connected to the rotary motor 41. The connecting rod 42 is provided with a positioning element 5 and a locking element 6. The locking element 6 is a U-bolt. The positioning element 5 and the locking element 6 are located at the end of the connecting rod 42 and on the side of the rotary motor 41 away from the upper casing 11. The positioning element 5 itself has a pointed tip 51, which serves as an indicator to reflect the angle of rotation of the upper fan blade 2 relative to the lower fan blade 3. The end of the locking element 6 passes through the positioning element 5 and is fixed to the connecting rod 42.

[0035] refer to Figure 2 and Figure 3 Both the upper fan blade 2 and the lower fan blade 3 are cylindrical, with their centers located on the center line of the connecting rod 42. The upper fan blade 2 has an upper airflow hole 21, and the lower fan blade 3 has a lower airflow hole 31. As the upper fan blade 2 rotates relative to the lower fan blade 3, the upper airflow hole 21 and the lower airflow hole 31 can be connected or misaligned. A cylindrical groove 32 is formed at the center of the lower fan blade 3, with the groove opening facing the upper fan blade 2. The sidewalls of the upper fan blade 2 and lower fan blade 3 abut against each other. The connecting rod 42 extends into the lower housing 12, passes through the center of the upper fan blade 2, and is inserted into the cylindrical groove 32. The connecting rod 42 is fixedly connected to the upper fan blade 2, and the upper fan blade 2 rotates relative to the lower housing 12, with the connecting rod 42 serving as the axis of rotation. The lower fan blade 3 is fixedly connected to the lower housing 12, and the connecting rod 42 rotates relative to the lower fan blade 3.

[0036] refer to Figure 2 and Figure 3 The diameter of the cylindrical groove 32 is larger than the diameter of the connecting rod 42. The total thickness of the upper fan blade 2 and the lower fan blade 3 is 10mm. Both the upper fan blade 2 and the lower fan blade 3 are made of thermal insulation material, which can be polyurethane foam (PU) or polystyrene foam (EPS).

[0037] The implementation principle of a miniature rotary air valve in this application embodiment is as follows: the outer shell 1 is fixed on the artificial climate chamber, and the connecting rod 42 is driven to rotate by the rotary motor 41. Then, the connecting rod 42 drives the upper fan blade 2 to rotate relative to the lower fan blade 3. The air valve is controlled to open or close by controlling the connection between the upper air hole 21 and the lower air hole 31, so that the artificial climate chamber can achieve the exchange of internal and external air volume even when the pressure is low or no pressure. The connecting rod 42 can also be manually rotated to achieve manual adjustment of the air volume entering and leaving the air valve.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A miniature rotary damper, characterized in that: The device includes a housing (1), on which an upper fan blade (2), a lower fan blade (3), and a rotating assembly (4) for driving the upper fan blade (2) to rotate relative to the lower fan blade (3) are provided. The side walls of the upper fan blade (2) and the lower fan blade (3) abut against each other. An upper air hole (21) is provided on the upper fan blade (2), and a lower air hole (31) is provided on the lower fan blade (3). The upper air hole (21) and the lower air hole (31) are in a state of communication and misalignment. The rotating assembly (4) includes a rotating motor (41) and a connecting rod (42). The connecting rod (42) passes through the housing (1) and is fixedly connected to the upper fan blade (2). The rotating motor (41) is fixed on the housing (1) to drive the connecting rod (42) to rotate. The lower fan blade (3) is fixed on the housing (1).

2. The miniature rotary damper according to claim 1, characterized in that: The rotary motor (41) is a hollow shaft motor; one end of the connecting rod (42) passes through the rotary motor (41), and the other end completely passes through the upper fan blade (2). A cylindrical groove (32) is provided on the lower fan blade (3), and the end of the connecting rod (42) protruding from the upper fan blade (2) is located in the cylindrical groove (32).

3. A miniature rotary damper according to claim 2, characterized in that: The connecting rod (42) is provided with a positioning element (5) and a locking element (6). The positioning element (5) is located at the end of the connecting rod (42) and on the side of the rotating motor (41) away from the upper fan blade (2). The positioning element (5) itself is provided with a pointed tip (51) for marking the rotation amplitude of the upper fan blade (2). The locking element (6) is used to fix the positioning element (5) on the connecting rod (42).

4. A miniature rotary damper according to claim 1, characterized in that: The outer shell (1) includes an upper shell (11) and a lower shell (12). The lower shell (12) is fixedly connected to the upper shell (11). The upper fan blade (2) and the lower fan blade (3) are both located inside the lower shell (12). The upper fan blade (2) is rotatably arranged relative to the outer shell (1). The lower fan blade (3) is fixed inside the lower shell (12). The upper fan blade (2) and the lower fan blade (3) are both cylindrical and their centers are both located on the center line of the connecting rod (42).

5. A miniature rotary damper according to claim 4, characterized in that: The total thickness of the upper fan blade (2) and the lower fan blade (3) is 10 mm.

6. A miniature rotary damper according to claim 2, characterized in that: The diameter of the cylindrical groove (32) is larger than the diameter of the connecting rod (42).

7. A miniature rotary damper according to claim 3, characterized in that: The locking element (6) is a U-bolt, which passes through the positioning element (5) and locks onto the connecting rod (42).

8. A miniature rotary damper according to claim 1, characterized in that: The upper fan blade (2) and lower fan blade (3) are made of heat-insulating material.

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