Anti-catkin structure for traditional flat outdoor unit
By installing a filter screen and support strip structure to prevent willow catkins on a traditional flat-panel outdoor unit, the problem of reduced heat dissipation efficiency and cleaning caused by willow catkins is solved, achieving efficient protection and convenient maintenance, extending service life and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CANATAL DATA CENT ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-03-04
- Publication Date
- 2026-05-08
AI Technical Summary
During the willow catkin season, traditional flat-panel outdoor units are prone to having willow catkins adsorbed onto the condenser, leading to reduced heat dissipation efficiency, increased energy consumption, and potential corrosion and damage to the condenser. Cleaning is difficult and costly.
Design a filter structure for preventing willow catkins, including a filter screen and a support strip. The filter screen is supported by a double-layer nylon mesh and metal wire, and is fixed to the air inlet surface of the condenser by screws. The filter screen is removable for easy cleaning, and the support strip is Z-shaped for easy installation.
It effectively blocks willow catkins from entering the outdoor unit, reduces the failure rate, extends service life, reduces energy consumption, simplifies the cleaning process, reduces maintenance costs, and is suitable for various brands and models without requiring large-scale modifications.
Smart Images

Figure CN224215466U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-willow catkin technology for flat-panel outdoor units, and in particular to a structure for anti-willow catkins in traditional flat-panel outdoor units. Background Technology
[0002] Traditional flat-panel outdoor units mainly consist of a casing, condenser, and fan. The condenser is directly exposed on the unit's surface. When the fan is running, air flows directly through the condenser for heat exchange to aid in cooling. Due to a lack of protective measures, during the willow catkin season, the open design means that the suction generated by the fan easily attracts and accumulates a large amount of willow catkins from the surrounding air onto the condenser's air intake surface. This severely obstructs normal airflow, affects the unit's normal operation, reduces the condenser's heat exchange efficiency, significantly diminishes the air conditioner's cooling or heating performance, and increases energy consumption. Furthermore, the long-term accumulation of willow catkins can cause corrosion and damage to the condenser, shortening the unit's lifespan. In addition, cleaning the willow catkins attached to the condenser is cumbersome and difficult, often requiring professional disassembly and cleaning. This not only wastes the user's time and money but may also cause damage to the unit due to frequent disassembly.
[0003] To address the shortcomings of existing technologies, it is necessary to design a structure for preventing willow catkins from being trapped in traditional flat-panel outdoor units. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a structure for preventing willow catkins from being trapped in traditional flat-panel outdoor units.
[0005] A structure for preventing willow catkins in a traditional flat-panel outdoor unit includes a willow catkin filter and two support strips for fixing the filter. The support strips include two fixing strips and a connecting strip. One side of one fixing strip is fixed to one side of the connecting strip, and the other side of the connecting strip is fixed to one side of the other fixing strip to form a Z-shaped strip. One end of each fixing strip is provided with a flange, and the direction and position of the flanges are opposite. One fixing strip is fixed to the air inlet surface of the condenser of the traditional flat-panel outdoor unit with a first screw. The willow catkin filter is inserted into the other fixing strip until one side of the filter abuts against the flange, and the other side is fixed with a second screw.
[0006] Furthermore, the anti-willow catkin filter includes a filter support frame and a filter layer disposed on the filter support frame, wherein the filter layer includes an inner mesh and bonding meshes disposed on both sides of the inner mesh.
[0007] Furthermore, the inner mesh is a double-layer nylon mesh with metal wires as support, and the metal wires are covered with a double layer of filter cotton.
[0008] Furthermore, the filter support frame includes a square frame and internal intersecting reinforcing ribs forming a grid, is made of metal, and its size is adapted to the size of the air inlet surface of the condenser of a traditional flat-panel outdoor unit.
[0009] Furthermore, the bonding mesh is a single piece.
[0010] Furthermore, the first screw is a self-rotating self-tapping screw, and the second screw is a self-tapping locking screw. Beneficial effects
[0011] 1. This utility model, through the synergistic effect of the anti-willow catkin filter and the support strip, can effectively block willow catkins from entering the outdoor unit, greatly reducing the adhesion of willow catkins to the condenser, reducing the problem of reduced condenser heat dissipation efficiency caused by willow catkin accumulation, reducing the failure rate of the outdoor unit caused by willow catkins, thereby extending the service life of traditional flat-panel outdoor units, ensuring that the air conditioner outdoor unit can maintain stable operating performance during the willow catkin season, without increasing the power output of the compressor due to poor heat dissipation, thus reducing the energy consumption of the air conditioner.
[0012] 2. This utility model features a detachable filter screen for preventing willow catkins, thanks to the support strips. This facilitates cleaning and replacement, eliminating the need for users to disassemble the traditional flat-panel outdoor unit. Users simply need to remove the self-tapping screws at the front to pull out the filter screen for cleaning or replacement. The operation is simple and quick, effectively reducing maintenance difficulty and costs for users. It also minimizes the risk of damage caused by frequent disassembly of the outdoor unit, causing minimal damage to the traditional flat-panel outdoor unit and not affecting its original efficiency. It is suitable for various brands and models of traditional flat-panel outdoor units. For models already on-site or sold, there is no need for large-scale modifications to the outdoor unit structure, saving the cost of replacing the outdoor unit to accommodate the willow catkin-preventing function. This broadens its market application range. Furthermore, the flip-edge design eliminates the need to distinguish the direction during installation, making it convenient and quick. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the structure of this utility model for preventing willow catkins from falling on a traditional flat-panel outdoor unit;
[0014] Figure 2 This is a three-dimensional structural diagram of the support strip of this utility model;
[0015] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;
[0016] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B;
[0017] In the picture:
[0018] 1. Anti-willow catkin filter; 11. Filter support frame; 12. Filter layer; 2. Support strip; 21. Fixing strip; 22. Connecting strip. Detailed Implementation
[0019] 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 protection scope of the present utility model.
[0020] Please refer to Figures 1-4 This embodiment proposes a structure for preventing willow catkins in traditional flat-panel outdoor units, including a willow catkin filter 1 and two support strips 2 for fixing the willow catkin filter 1. The support strips 2 include two fixing strips 21 and a connecting strip 22. One side of one fixing strip 21 is fixed to one side of the connecting strip 22, and the other side of the connecting strip 22 is fixed to one side of the other fixing strip 21 to form a Z-shaped strip. One end of both fixing strips 21 is provided with a flange, and the direction and position of the flanges are opposite, so that there is no need to distinguish the direction during installation, which is convenient and quick. One fixing strip 21 is fixed to the condenser of the traditional flat-panel outdoor unit with a first screw. On the air inlet surface, the anti-catkin filter 1 is inserted into another fixing strip 21 until one side of the anti-catkin filter 1 abuts against the flange, allowing the anti-catkin filter 1 to be quickly disassembled and cleaned. The other side is fixed with a second screw. The first screw is a self-tapping screw. Using a self-tapping screw to fix the mesh strip is different from the traditional complicated fastening method. Since there is no need for the traditional flat outdoor unit to have reserved installation holes, ordinary users can complete the installation in a short time, which greatly improves the installation efficiency and reduces the installation cost and labor cost. The second screw is a self-tapping locking screw. The disassembly and cleaning method makes the cleaning and replacement of the anti-catkin filter 1 extremely convenient. Users do not need to disassemble the traditional flat-panel outdoor unit casing; they only need to remove the front self-tapping screws to pull out the filter for cleaning or replacement. The operation is simple and quick, effectively reducing the user's maintenance difficulty and cost. It also reduces the risk of damage that may be caused by frequent disassembly of the outdoor unit. It causes little damage to the traditional flat-panel outdoor unit, does not affect the original efficiency, and is economical, environmentally friendly, and suitable for various brands and models of traditional flat-panel outdoor units. For models that are already in the field or have been sold, there is no need for large-scale modification of the outdoor unit structure, saving the cost of replacing the outdoor unit to adapt to the anti-willow catkin function and expanding its market application scope.
[0021] Through the synergistic effect of the anti-catkin filter 1 and the support strip 2, catkins can be effectively blocked from entering the outdoor unit. Compared with traditional unprotected outdoor units, the anti-catkin efficiency can reach over 95%, greatly reducing the adhesion of catkins to the condenser, reducing the problem of reduced condenser heat dissipation efficiency caused by catkin accumulation, reducing the failure rate of the outdoor unit caused by catkins, and thus extending the service life of traditional flat-panel outdoor units. This ensures that the air conditioner outdoor unit can maintain stable operating performance during the catkin season, without increasing the compressor power output due to poor heat dissipation, thereby reducing the energy consumption of the air conditioner.
[0022] The anti-willow catkin filter 1 includes a filter support frame 11 and a filter layer 12 disposed on the filter support frame 11. The filter layer 12 includes an inner mesh and a bonding mesh disposed on both sides of the inner mesh. The inner mesh is a double-layer nylon mesh with metal wire as support, and the metal wire is covered with a double layer of filter cotton. The bonding mesh is an integral piece. This structure enhances the filtration effect and stability, effectively blocking willow catkins while reducing costs and reducing the risk of outdoor unit failure. The filter support frame 11 includes a square frame and internal intersecting reinforcing ribs forming a grid. It is made of metal material and its size is adapted to the size of the air inlet surface of the condenser of a traditional flat outdoor unit. The anti-willow catkin filter 1 has a low operating cost, higher cost performance, and broad market prospects and application value.
[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A structure for preventing willow catkins from being emitted from a traditional flat-panel outdoor unit, characterized in that: The device includes a willow catkin filter (1) and two support bars (2) for fixing the willow catkin filter (1). The support bars (2) include two fixing bars (21) and a connecting bar (22). One side of one fixing bar (21) is fixed to one side of the connecting bar (22), and the other side of the connecting bar (22) is fixed to one side of the other fixing bar (21) to form a Z-shaped strip. One end of each fixing bar (21) is provided with a flange, and the direction and position of the flange are opposite. One fixing bar (21) is fixed to the air inlet surface of the condenser of the conventional flat outdoor unit with a first screw. The willow catkin filter (1) is inserted into the other fixing bar (21) until one side of the willow catkin filter (1) abuts against the flange, and the other side is fixed with a second screw.
2. The structure for preventing willow catkins according to claim 1, characterized in that: The anti-catkin filter (1) includes a filter support frame (11) and a filter layer (12) disposed on the filter support frame (11). The filter layer (12) includes an inner mesh and a bonding mesh disposed on both sides of the inner mesh.
3. The structure for preventing willow catkins according to claim 2, characterized in that: The inner mesh consists of a double-layer nylon mesh with metal wires as support, and the metal wires are covered with a double layer of filter cotton.
4. The structure for preventing willow catkins according to claim 2, characterized in that: The filter support frame (11) includes a square frame and internal intersecting reinforcing ribs forming a grid. It is made of metal and its size is adapted to the size of the air inlet surface of the condenser of a traditional flat-panel outdoor unit.
5. The structure for preventing willow catkins according to claim 2, characterized in that: The bonding mesh is a single piece.
6. The structure for preventing willow catkins according to claim 1, characterized in that: The first screw is a self-rotating self-tapping screw, and the second screw is a self-tapping locking screw.