Air duct switching device
By driving the flap on the air outlet switch, the problems of fresh air environmental protection and drug filter load in the movable virus detection station are solved, and efficient switching of air ducts and improving the safety of the cabin environment are achieved.
Patent Information
- Application Number
- CN202323627184.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-27
AI Technical Summary
In mobile virus detection stations, the existing technology is difficult to effectively prevent virus leakage and ensure the fresh air environment in the cabin. The poison filter or filter works for a long time to increase the load, or it cannot effectively filter toxic gases and odors, affecting medical staff Working environment.
Design an air duct switching device, which controls the switches of the first and second air outlets through an electric push rod, automatically switches the channels according to the type of gas, ensures fresh air or eliminates toxic gases into the cabin, and simplifies the disassembly and assembly and maintenance of the device .
It improves the convenience and safety of air duct switching, reduces the workload of poison filters, ensures the fresh air environment in the cabin and the safety of medical staff, and facilitates subsequent maintenance and component replacement.
Smart Images
Figure CN222278826U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air duct switching, in particular to an air duct switching device. Background Art
[0002] Affected by the epidemic, virus detection stations are developing in a mobile direction. In order to prevent virus leakage, mobile virus detection stations need to maintain fresh air in real time during operation. At present, in order to keep the cabin in a state of fresh air at all times during operation, a blower is usually used to deliver external air into the cabin, and a cabin exhaust fan is used to extract the air in the cabin, and a gas filter or filter is installed in the air duct sent by the blower into the cabin to ensure that the air entering the cabin is fresh air. However, such a setting will cause the gas filter or filter to remain in a working state when the air passes through, greatly increasing the workload of the gas filter or filter. Alternatively, if a gas filter or filter is not installed in the air duct, some of the fresh air entering the cabin will contain toxic gases or odors, which will affect the working environment of medical staff inside the cabin. For this reason, an air duct switching device is proposed. Utility Model Content
[0003] The purpose of the utility model is to provide an air duct switching device to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a duct switching device, comprising a shell and a first air outlet and a second air outlet arranged on the surface of the shell, an electric push rod is arranged inside the shell, and the telescopic end of the electric push rod is provided with a flap for controlling the opening or closing of the first air outlet and the second air outlet, and the electric push rod and the flap are connected by a connecting piece, and the upper end of the flap is provided with a limit piece connected to the inner wall of the shell. In use, the electric push rod retracts and the flap is linked to swing, the first air outlet is closed and the second air outlet is opened, conversely, when the electric push rod is extended and the flap is linked to swing, the first air outlet is opened and the second air outlet is closed.
[0005] As a further solution of the utility model: an opening is provided on the surface of the shell, and a cover plate connected to the opening is installed on the surface of the shell, and an air inlet for external air to enter the shell is provided on the cover plate.
[0006] As a further solution of the utility model: the corners of the shell and the cover plate are designed to be arc-shaped.
[0007] As a further solution of the utility model: the flap includes a first flap and a second flap, the first flap is adapted to the second air outlet, the second flap is adapted to the first air outlet, and the plane where the first flap is located is perpendicular to the plane where the second flap is located.
[0008] As a further solution of the utility model: the connecting member includes a connecting rod and a first connecting portion and a second connecting portion respectively arranged at the ends of the connecting rod, the first connecting portion is connected to the electric push rod, and the second connecting portion is connected to the flap.
[0009] As a further solution of the utility model: the first connecting part includes a first pin shaft that transversely passes through the end of the electric push rod, the connecting rod is sleeved in the middle of the outer circumference of the first pin shaft, and both ends of the first pin shaft are inserted with a first open pin located on the outside of the electric push rod.
[0010] As a further solution of the utility model: the second connecting part includes a second pin shaft that transversely passes through the end of the connecting rod, the outer circumferential surface of the second pin shaft is sleeved with a bracket connected to the surface of the flap, and second open pins are inserted at both ends of the second pin shaft.
[0011] As a further solution of the utility model: the limiting member includes a fixing frame installed on the upper end of the flap, a third pin shaft is penetrated through the end of the fixing frame, a movable sleeve on the outer circumference of the third pin shaft is provided with a fixing sleeve connected to the inner wall of the shell body, and third open pins are inserted at both ends of the third pin shaft.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The present application controls the swing of the flap by driving the connecting rod through an electric push rod. When the flap swings to coincide with the second air outlet, the second air outlet can be closed, and the first air outlet is opened. When the flap swings to coincide with the first air outlet, the first air outlet can be closed, and the second air outlet is opened. The channel entering the cabin can be switched according to the gas entering the shell, which greatly improves the convenience of air duct switching.
[0014] 2. At the same time, the first pin shaft, the first cotter pin, the second pin shaft, the second cotter pin, the third pin shaft and the third cotter pin facilitate the disassembly and assembly of the electric push rod, the connecting rod and the flap, facilitate the convenience of the staff in subsequent maintenance and replacement of parts, and improve the work efficiency of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the combination of the housing and the cover plate of the utility model;
[0016] Figure 2 This is a schematic diagram of the first air outlet and the second air outlet of the utility model;
[0017] Figure 3 It is an exploded schematic diagram of the air duct switching device of the utility model;
[0018] Figure 4This is a schematic diagram of the connection between the connecting rod, the electric push rod and the flap of the utility model;
[0019] Figure 5 It is a schematic diagram of the interior of the housing of the utility model;
[0020] Figure 6 It is a schematic diagram of the flap of the utility model;
[0021] In the figure: 1. shell; 2. first air outlet; 3. second air outlet; 4. cover plate; 5. air inlet; 6. electric push rod; 7. limit groove; 8. first pin shaft; 9. first cotter pin; 10. connecting rod; 11. second pin shaft; 12. bracket; 13. second cotter pin; 14. flap; 15. fixing bracket; 16. third pin shaft; 17. fixing sleeve; 18. third cotter pin. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-6 In an embodiment of the utility model, an air duct switching device comprises a shell 1 and a first air outlet 2 and a second air outlet 3 arranged on the surface of the shell 1. The surface of the shell 1 is provided with an opening, and a cover plate 4 connected to the opening is installed on the surface of the shell 1, and an air inlet 5 for external air to enter the shell 1 is provided on the cover plate 4. The corners of the shell 1 and the cover plate 4 are designed to be arc-shaped. Such a design can avoid the problem that the corners of the device are too sharp and easy to scratch the skin of the staff when the staff disassembles and assembles the device. An electric push rod 6 is provided inside the shell 1, and a flap 14 for controlling the opening or closing of the first air outlet 2 and the second air outlet 3 is provided at the telescopic end of the electric push rod 6, and the electric push rod 6 is connected to the flap 14 by a connecting piece, and a limit piece connected to the inner wall of the shell 1 is provided at the upper end of the flap 14. When in use, the electric push rod 6 retracts and the flap 14 swings in conjunction with the first air outlet 2, and the second air outlet 3 is closed. Conversely, when the electric push rod 6 extends and the flap 14 swings in conjunction with the first air outlet 2, the first air outlet 2 is opened and the second air outlet 3 is closed.
[0024] Specifically, the first air outlet 2 is connected to the cabin through a filter or a canister (the filter or canister is an external device, and the filter or canister belongs to the prior art, and will not be described in detail here), and the second air outlet 3 is directly connected to the cabin. When the sensor recognizes that the gas entering the shell 1 through the air inlet 5 is a toxic gas (the device for the sensor to recognize the gas belongs to an external device, belongs to the prior art, and will not be described in detail here), the electric push rod 6 is in the open state when it rotates forward and links the flap 14 through the connecting rod 10, so that the flap 14 closes the second air outlet 3 At this time, the first air outlet 2 is opened, and the toxic gas is discharged through the first air outlet 2 after entering the shell 1, filtered and then enters the cabin. At the same time, when the fresh air enters the interior of the shell 1 through the air inlet 5, the electric push rod 6 is reversed and is in a closed state, and the flap 14 is linked by the connecting rod 10 to make the flap 14 close the first air outlet 2. At this time, the second air outlet 3 is opened and the fresh air can be directly discharged into the cabin through the second air outlet 3, which not only avoids the gas filter or filter from being in working state for a long time, but also ensures the working environment of the medical staff in the cabin.
[0025] See also Figure 3 and Figure 5 In one embodiment, in order to ensure that the first air outlet 2 or the second air outlet 3 can be switched smoothly, in this embodiment, preferably, the flap 14 includes a first flap and a second flap, the first flap is adapted to the second air outlet 3, the second flap is adapted to the first air outlet 2, and the plane where the first flap is located is perpendicular to the plane where the second flap is located.
[0026] Specifically, the size of the first flap is matched with the size of the second air outlet 3, which can ensure the smooth switching of the second air outlet 3 for ventilation. The second flap is matched with the first air outlet 2, which can ensure the smooth switching of the first air outlet 2 for ventilation.
[0027] See also Figure 3-5 In one embodiment, in order to connect the flap 14 with the electric push rod 6, in this embodiment, preferably, the connecting member includes a connecting rod 10 and a first connecting portion and a second connecting portion respectively arranged at the ends of the connecting rod 10, the first connecting portion is connected to the electric push rod 6, the end of the electric push rod 6 is provided with a limiting groove 7 for the connecting rod 10 to be inserted, and the second connecting portion is connected to the flap 14; the first connecting portion includes a first pin shaft 8 that transversely passes through the end of the electric push rod 6, the connecting rod 10 is sleeved in the middle of the outer circumference of the first pin shaft 8, and the two ends of the first pin shaft 8 are both inserted with a first open pin 9 located on the outside of the electric push rod 6; the second connecting portion includes a second pin shaft 11 that transversely passes through the end of the connecting rod 10, the outer circumference of the second pin shaft 11 is sleeved with a bracket 12 connected to the surface of the flap 14, and the two ends of the second pin shaft 11 are both inserted with a second open pin 13.
[0028] Specifically, a through hole is formed at the end of the electric push rod 6 for the first pin shaft 8 to pass through, and through holes are also formed at both ends of the first pin shaft 8 for the end of the first open pin 9 to pass through, so that it is convenient to connect the electric push rod 6 and the connecting rod 10 together. At the same time, after the first open pin 9 is pulled out of the through hole of the first pin shaft 8, the first pin shaft 8 can also be detached from the end of the electric push rod 6 to achieve a better disassembly and assembly effect. Secondly, the other end of the connecting rod 10 is connected to the bracket 12 through the second pin shaft 11 and the second open pin 13. By pulling out the second open pin 13 and pulling the second pin shaft 11 away from the bracket 12 and the connecting rod 10, the connecting rod 10 can be separated from the bracket 12.
[0029] See also Figure 3-5 In one embodiment, in order to preliminarily fix the position of the flap 14, in this embodiment, preferably, the limiting member includes a fixing frame 15 installed on the upper end of the flap 14, and a third pin shaft 16 is penetrated through the end of the fixing frame 15. The outer peripheral surface of the third pin shaft 16 is movably sleeved with a fixing sleeve 17 connected to the inner wall of the shell 1, and third cotter pins 18 are inserted at both ends of the third pin shaft 16.
[0030] Specifically, it is connected to the inner wall of the shell 1 through a fixing sleeve 17, and then the third open pin 18 is fixedly inserted in the position of the third pin shaft 16 on the surface of the fixing sleeve 17. The fixing frame 15 connected to the flap 14 is sleeved on the outer peripheral surface of the third pin shaft 16, so that the fixing frame 15 can make axial rotation along the outer periphery of the third pin shaft 16. At the same time, after one end of the flap 14 is fixed to the fixing frame 15, the other end can only make circular motion with the third pin shaft 16 as the midpoint. The first air outlet 2 is located on the path of the circular motion of the second flap. When the electric push rod 6 is reversed and in a closed state, the position of the second flap coincides with the first air outlet 2.
[0031] In addition, the air duct switching device can be used in reverse, that is, the air inlet and the air outlet are swapped to switch between internal circulation and external circulation.
[0032] The working principle and use process of the utility model are as follows: when the sensor detects that the external air is toxic gas, the electric push rod 6 rotates forward and is in an open state, and is linked to the flap 14 through the connecting rod 10, so that the flap 14 closes the second air outlet 3. At this time, the first air outlet 2 is open, and the toxic gas enters the shell 1 and is discharged through the first air outlet 2 for filtration before entering the cabin. At the same time, when the fresh air enters the shell 1 through the air inlet 5, the electric push rod 6 is reversed and is in a closed state, and is linked to the flap 14 through the connecting rod 10, so that the flap 14 closes the first air outlet 2. At this time, the second air outlet 3 is opened and the fresh air can be directly discharged into the cabin through the second air outlet 3. When the switching device needs to be disassembled and assembled, the first opening pin 9, the second opening pin 13 and the third opening pin 18 can be pulled out in sequence, thereby realizing the disassembly and assembly of the internal components of the shell 1.
[0033] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
[0034] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.
Claims
1. A duct switching device, characterized in that: The invention comprises a shell (1) and a first air outlet (2) and a second air outlet (3) arranged on the surface of the shell (1); an electric push rod (6) is arranged inside the shell (1); and a flap (14) for controlling the opening or closing of the first air outlet (2) and the second air outlet (3) is arranged at the telescopic end of the electric push rod (6); the electric push rod (6) and the flap (14) are connected via a connecting piece; and a limit piece connected to the inner wall of the shell (1) is arranged at the upper end of the flap (14); in a use state, the electric push rod (6) retracts and links the flap (14) to swing, the first air outlet (2) is closed and the second air outlet (3) is opened; conversely, when the electric push rod (6) extends and links the flap (14) to swing, the first air outlet (2) is opened and the second air outlet (3) is closed.
2. The air duct switching device according to claim 1, characterized in that: The surface of the shell (1) is provided with an opening, and a cover plate (4) is mounted on the surface of the shell (1) and is connected to the opening in cooperation with the cover plate (4), and an air inlet (5) is provided on the cover plate (4) for allowing external air to enter the interior of the shell (1).
3. The air duct switching device according to claim 1, characterized in that: The corners of the housing (1) and the cover plate (4) are both designed to be arc-shaped.
4. The air duct switching device according to claim 1, characterized in that: The flap (14) comprises a first flap and a second flap, the first flap is adapted to the second air outlet (3), the second flap is adapted to the first air outlet (2), and the plane where the first flap is located is perpendicular to the plane where the second flap is located.
5. The air duct switching device according to claim 1, characterized in that: The connecting member comprises a connecting rod (10) and a first connecting portion and a second connecting portion respectively arranged at the ends of the connecting rod (10), the first connecting portion being connected to the electric push rod (6), and the second connecting portion being connected to the flap (14).
6. The air duct switching device according to claim 5, characterized in that: The first connecting portion comprises a first pin shaft (8) which transversely passes through the end of the electric push rod (6); the connecting rod (10) is sleeved on the middle part of the outer peripheral surface of the first pin shaft (8); and both ends of the first pin shaft (8) are plugged with a first cotter pin (9) located on the outside of the electric push rod (6).
7. The air duct switching device according to claim 5, characterized in that: The second connecting portion comprises a second pin shaft (11) which passes transversely through the end of the connecting rod (10); the outer peripheral surface of the second pin shaft (11) is sleeved with a bracket (12) which is connected to the surface of the flap (14); and second cotter pins (13) are inserted at both ends of the second pin shaft (11).
8. The air duct switching device according to claim 1, characterized in that: The limiting member comprises a fixing frame (15) mounted on the upper end of the flap (14); a third pin shaft (16) is provided through the end of the fixing frame (15); a fixing sleeve (17) connected to the inner wall of the shell (1) is movably sleeved on the outer peripheral surface of the third pin shaft (16); and third cotter pins (18) are inserted at both ends of the third pin shaft (16).