Length-variable fan shield
By designing a variable fan cover and using components such as threaded sleeves and magnetic rings to separate the air outlet from the air inlet, the problem of air stagnation caused by the limited installation space of the outdoor unit of the air conditioner is solved, thus improving the stability and convenience of the air conditioner.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE RUNPEI HARDWARE PRODUCTS CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-28
AI Technical Summary
The limited space for installing the outdoor unit of the air conditioner can cause the air discharged from the outlet to easily stagnate and be drawn back into the air inlet, affecting the normal operation of the air conditioner and reducing the practicality of the device.
A variable-length fan guard was designed. Through the threaded connection of the threaded sleeve and the threaded ring, the fan guard can be moved closer to the louvers. Combined with a magnetic ring, telescopic sleeve and gear system, the air outlet and air inlet are further separated to prevent air from being drawn in again.
This improves the stability and convenience of the air conditioning unit, ensuring that the air outlet is not easily drawn back into the air inlet, thus ensuring the normal operation of the air conditioner.
Smart Images

Figure CN224175276U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioner outdoor units, specifically a variable length fan cover. Background Technology
[0002] Currently, many buildings are constructed with very limited space for air conditioner outdoor units in order to save indoor space, or for aesthetic reasons, the outdoor units are installed directly inside the building and air is drawn in and exhausted through a small louver.
[0003] However, due to the limited installation space, the air discharged from the outdoor unit's air outlet is easily trapped near the outdoor unit and can be drawn back into the outdoor unit's air inlet, affecting the normal operation of the air conditioner and reducing the practicality of the device. Therefore, a variable length fan cover is proposed to address the above problems. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A variable-length fan cover, comprising an air conditioner outdoor unit body, an air inlet on the outside of the air conditioner outdoor unit body, an exhaust fan rotatably connected to the inside of the air conditioner outdoor unit body, a threaded ring fixedly connected to the outside of the air conditioner outdoor unit body, a threaded sleeve threadedly connected to the outside of the threaded ring, and a fan cover fixedly connected to the inside of the threaded sleeve. This step, by setting up the air conditioner outdoor unit body, air inlet, exhaust fan, threaded ring, threaded sleeve, and fan cover, allows the air conditioner outdoor unit body to be installed indoors near the louvers. Rotating the threaded sleeve, through the threaded connection between the threaded sleeve and the threaded ring, allows the threaded sleeve to move closer to the louvers. This, in turn, moves the fan cover closer to the louvers, allowing the threaded sleeve and threaded ring to further restrict and guide the exhaust air, ensuring that the exhaust air is further away from the air inlet of the air conditioner outdoor unit body. This prevents the exhaust air from being re-intaken into the air inlet of the air conditioner outdoor unit body, thus affecting the normal operation of the air conditioner outdoor unit body and improving the stability of the device.
[0006] Preferably, a magnetic ring is rotatably connected to the inner side of the threaded sleeve, and a telescopic sleeve is fixedly connected to the outer side of the magnetic ring. A circular frame is fixedly connected to one end of the telescopic sleeve, and the circular frame and the magnetic ring are rotatably connected. By setting up the magnetic ring, telescopic sleeve, and circular frame, after the threaded sleeve extends the fan cover, the circular frame can be rotated to unfold the telescopic sleeve, thereby further separating the fan cover from the air inlet of the air conditioner outdoor unit. This makes it less likely for the exhausted air to be re-inhaled into the air inlet, improving the stability of the device.
[0007] Preferably, a limiting plate is fixedly connected to the outer side of the magnetic ring, and a limiting rod is slidably connected to the inner side of the limiting plate. The limiting rod is fixedly connected to the air conditioner outdoor unit body. This step, by setting the limiting plate and the limiting rod, further restricts the position of the magnetic ring, thereby making the position of the telescopic sleeve more fixed and preventing it from rotating or shifting, thus improving the stability of the device.
[0008] Preferably, a toothed plate is fixedly connected to the outer side of the outdoor unit of the air conditioner, and a gear is fixedly connected to the outer side of the circular frame. The toothed plate and the gear mesh. By setting the toothed plate and the gear, the circular frame moves synchronously when the threaded sleeve moves. The circular frame drives the gear to move, and the meshing of the gear and the toothed plate causes the gear to rotate. This, in turn, drives the circular frame to rotate, which in turn causes the telescopic sleeve to unfold. This makes the unfolding of the telescopic sleeve more convenient and improves the ease of use of the device.
[0009] Preferably, a baffle is fixedly connected to the outside of the limiting rod, and the baffle and the limiting plate are used in conjunction. This step, by setting the baffle, restricts the threaded sleeve when it moves to the maximum position by contacting the limiting plate, making it difficult for the threaded sleeve to continue moving to the point of separating and falling off from the threaded ring, thus improving the stability of the device.
[0010] Preferably, a protective plate is fixedly connected to the outside of the air conditioner outdoor unit body, and the toothed plate and gear are slidably connected to the protective plate. By setting the protective plate, when the toothed plate and gear are meshing, the protective plate can be pressed against the toothed plate and gear, thereby facilitating the shielding of the toothed plate and gear, making it less likely to come into contact with the external environment, reducing wear, and improving the stability of the device.
[0011] The advantages of this utility model are:
[0012] 1. This utility model, by setting up an air conditioner outdoor unit body, an air inlet, an exhaust fan, a threaded ring, a threaded sleeve, and a fan cover, allows the air conditioner outdoor unit body to be installed indoors near the louvers during use. By rotating the threaded sleeve, the threaded connection between the threaded sleeve and the threaded ring allows the threaded sleeve to move closer to the louvers. This, in turn, causes the fan cover to move closer to the louvers. The threaded sleeve, in conjunction with the threaded ring, further restricts and guides the exhaust air, ensuring that the exhaust air is further away from the air inlet of the air conditioner outdoor unit body. This prevents the exhaust air from being re-inhaled by the air inlet of the air conditioner outdoor unit body, thus affecting the normal operation of the air conditioner outdoor unit body and improving the stability of the device.
[0013] 2. By setting up a magnetic ring, a telescopic sleeve, and a circular frame, after the threaded sleeve extends the fan cover, the circular frame can be rotated to unfold the telescopic sleeve, thereby further separating the fan cover from the air inlet of the air conditioner outdoor unit. This makes it less likely for the exhausted air to be re-inhaled into the air inlet, thus improving the stability of the device. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a front view of the structure in this utility model;
[0016] Figure 2 This is a side view of the structure in this utility model;
[0017] Figure 3 This is a schematic diagram of the threaded ring structure in this utility model;
[0018] Figure 4 This is a schematic diagram of the threaded sleeve structure in this utility model;
[0019] Figure 5 This is a schematic diagram of the telescopic sheath structure in this utility model.
[0020] In the diagram: 1. Air conditioner outdoor unit body; 2. Air inlet; 3. Exhaust fan; 4. Threaded ring; 5. Threaded sleeve; 6. Fan cover; 7. Magnetic ring; 8. Telescopic sleeve; 9. Circular frame; 10. Limiting plate; 11. Limiting rod; 12. Toothed plate; 13. Gear; 14. Baffle; 15. Protective plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0022] Specific implementation examples are given below.
[0023] Please see Figures 1 to 5As shown, a variable-length fan cover includes an air conditioner outdoor unit body 1. An air inlet 2 is provided on the outer side of the air conditioner outdoor unit body 1. An exhaust fan 3 is rotatably connected to the inner side of the air conditioner outdoor unit body 1. A threaded ring 4 is fixedly connected to the outer side of the air conditioner outdoor unit body 1. A threaded sleeve 5 is threadedly connected to the outer side of the threaded ring 4. A fan cover 6 is fixedly connected to the inner side of the threaded sleeve 5. This step involves setting up the air conditioner outdoor unit body 1, air inlet 2, exhaust fan 3, threaded ring 4, threaded sleeve 5, and fan cover 6. In use, the air conditioner outdoor unit body 1 is first installed indoors near... By rotating the threaded sleeve 5, the threaded sleeve 5 and the threaded ring 4 are connected, allowing the threaded sleeve 5 to move closer to the louvers. This causes the fan cover 6 to move closer to the louvers, allowing the threaded sleeve 5 and the threaded ring 4 to further restrict and guide the exhaust air. This ensures that the exhaust air is further away from the air inlet 2 of the outdoor unit 1, making it less likely for the exhaust air to be re-inhaled by the air inlet 2 of the outdoor unit 1, thus affecting the normal operation of the outdoor unit 1 and improving the stability of the device.
[0024] Furthermore, such as Figure 1 , Figure 4 and Figure 5 As shown, a magnetic ring 7 is rotatably connected to the inner side of the threaded sleeve 5, and a telescopic sleeve 8 is fixedly connected to the outer side of the magnetic ring 7. A circular frame 9 is fixedly connected to one end of the telescopic sleeve 8, and the circular frame 9 and the magnetic ring 7 are rotatably connected. By setting up the magnetic ring 7, the telescopic sleeve 8, and the circular frame 9, after the threaded sleeve 5 drives the fan cover 6 to extend, the circular frame 9 can be rotated to drive the telescopic sleeve 8 to unfold, thereby further separating the fan cover 6 from the air inlet 2 of the air conditioner outdoor unit body 1. This makes it less likely for the exhausted air to be re-inhaled into the air inlet 2, improving the stability of the device.
[0025] Furthermore, such as Figure 2 As shown, a limiting plate 10 is fixedly connected to the outer side of the magnetic ring 7, and a limiting rod 11 is slidably connected to the inner side of the limiting plate 10. The limiting rod 11 is fixedly connected to the air conditioner outdoor unit body 1. This step, by setting the limiting plate 10 and the limiting rod 11, further restricts the position of the magnetic ring 7, thereby making the position of the telescopic sleeve 8 more fixed, making it less prone to rotational deviation, and improving the stability of the device.
[0026] Furthermore, such as Figure 2 and Figure 3As shown, a toothed plate 12 is fixedly connected to the outer side of the outdoor unit body 1 of the air conditioner, and a gear 13 is fixedly connected to the outer side of the circular frame 9. The toothed plate 12 and the gear 13 mesh. In this step, by setting the toothed plate 12 and the gear 13, the circular frame 9 will move synchronously when the threaded sleeve 5 moves. The circular frame 9 drives the gear 13 to move. Through the meshing of the gear 13 and the toothed plate 12, the gear 13 rotates, thereby driving the circular frame 9 to rotate. In turn, the circular frame 9 drives the telescopic sleeve 8 to unfold, making the unfolding of the telescopic sleeve 8 more convenient and improving the ease of use of the device.
[0027] Furthermore, such as Figure 2 As shown, a baffle 14 is fixedly connected to the outer side of the limiting rod 11. The baffle 14 and the limiting plate 10 are used in conjunction. By setting the baffle 14, when the threaded sleeve 5 moves to the maximum position, the baffle 14 contacts the limiting plate 10 to restrict it, making it difficult for the threaded sleeve 5 to continue moving to separate from the threaded ring 4 and fall off, thus improving the stability of the device.
[0028] Furthermore, such as Figure 1 As shown, a protective plate 15 is fixedly connected to the outside of the air conditioner outdoor unit body 1, and the toothed plate 12 and gear 13 are slidably connected to the protective plate 15. By setting the protective plate 15, when the toothed plate 12 and gear 13 are meshing, the protective plate 15 can be pressed against the toothed plate 12 and gear 13, thereby facilitating the shielding of the toothed plate 12 and gear 13, making it less likely to come into contact with the external environment, reducing wear, and improving the stability of the device.
[0029] Working principle: During use, first install the outdoor unit 1 of the air conditioner indoors near the louvers. Rotate the threaded sleeve 5. Through the threaded connection between the threaded sleeve 5 and the threaded ring 4, the threaded sleeve 5 can move closer to the louvers. This causes the fan cover 6 to move closer to the louvers, allowing the threaded sleeve 5 and the threaded ring 4 to further restrict and guide the exhaust air. Simultaneously, the movement of the threaded sleeve 5 causes the magnetic ring 7 to move. Through the fixed connection between the magnetic ring 7 and the limiting plate 10, and the insertion of the limiting rod 11 inside the limiting plate 10, the limiting plate 10 restricts the position of the magnetic ring 7. This prevents the magnetic ring 7 from rotating along with the threaded sleeve 5 when it is moved by the threaded sleeve 5. This allows the telescopic sleeve 8 on the outer side of the magnetic ring 7 to move stably. Simultaneously, the magnetic ring 7 drives the circular frame 9 to move, which in turn drives the gear 13 to move. Through the meshing of the gear 13 and the toothed plate 12, the gear 13 rotates while moving, thereby driving the circular frame 9 to rotate. The circular frame 9 then causes the telescopic sleeve 8 to unfold, separating the air inlet 2 from the fan cover 6. When the air conditioner outdoor unit 1 discharges air from the fan cover 6, the telescopic sleeve 8 blocks and restricts the air, further distancing it from the air inlet 2 of the air conditioner outdoor unit 1. Consequently, the discharged air is less likely to move to the air inlet 2 of the air conditioner outdoor unit 1 and be re-inhaled, thus affecting the normal operation of the air conditioner outdoor unit 1.
[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A variable-length fan cover, comprising an air conditioner outdoor unit body (1), characterized in that: An air inlet (2) is provided on the outside of the outdoor unit body (1) of the air conditioner. An exhaust fan (3) is rotatably connected to the inside of the outdoor unit body (1). A threaded ring (4) is fixedly connected to the outside of the outdoor unit body (1). A threaded sleeve (5) is threadedly connected to the outside of the threaded ring (4). A fan cover (6) is fixedly connected to the inside of the threaded sleeve (5). A magnetic ring (7) is rotatably connected to the inside of the threaded sleeve (5). A telescopic sleeve (8) is fixedly connected to the outside of the magnetic ring (7). (8) A circular frame (9) is fixedly connected to one end. The circular frame (9) and the magnetic ring (7) are rotatably connected. A limiting plate (10) is fixedly connected to the outside of the magnetic ring (7). A limiting rod (11) is slidably connected to the inside of the limiting plate (10). The limiting rod (11) is fixedly connected to the air conditioner outdoor unit body (1). A toothed plate (12) is fixedly connected to the outside of the air conditioner outdoor unit body (1). A gear (13) is fixedly connected to the outside of the circular frame (9). The toothed plate (12) and the gear (13) mesh.
2. The variable length fan cover according to claim 1, characterized in that: A baffle (14) is fixedly connected to the outside of the limiting rod (11), and the baffle (14) and the limiting plate (10) are used together.
3. A variable-length fan guard according to claim 2, characterized in that: A protective plate (15) is fixedly connected to the outside of the air conditioner outdoor unit body (1), and the toothed plate (12) and gear (13) are slidably connected to the protective plate (15).