A rib for an excavator air conditioner air filter
By using a nickel-titanium shape memory alloy inner core skeleton and a multi-layer composite material layer in the air filter ribs of excavator air conditioners, the problem of insufficient structural strength of the ribs in high-temperature and corrosive environments has been solved, thereby improving the durability of the ribs and the cleanliness of the air conditioning system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI SHOUGANG DENSO CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-05-29
AI Technical Summary
The existing air filter ribs of excavator air conditioners have insufficient structural strength in high-temperature and corrosive environments, resulting in frequent replacements and high maintenance costs.
The rib body is manufactured using core-coated technology. The inner core skeleton is made of nickel-titanium shape memory alloy, and the outer layer is made of composite material, including a wear-resistant and impact-resistant layer, a temperature-resistant protective layer, a waterproof and corrosion-resistant layer, an antibacterial layer, and a buffer sealing layer, which enhances the structural strength and durability of the rib.
It improves the compressive strength and wear resistance of the ribs, extends their service life, enhances the cleanliness and safety of the air conditioning system, and reduces maintenance frequency and cost.
Smart Images

Figure CN224292782U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of air conditioning units for construction machinery, and in particular to an air filter rib for an excavator air conditioner. Background Technology
[0002] The ribs in an excavator's air conditioning filter typically refer to the fine strip-shaped structures inside the filter, used to enhance its filtration efficiency. The rib design usually provides a larger filtration surface area, helping the filter more effectively capture dust, impurities, and other pollutants from the air. This ensures clean air inside the excavator's air conditioning system, preventing dust or impurities from entering the air conditioning system and the cab, guaranteeing the normal operation of the air conditioning system and the driver's comfort. Furthermore, the rib structure also enhances the filter's strength and durability, preventing deformation or damage during airflow.
[0003] In practical use, the ribs of the air filter in the excavator air conditioner often have insufficient structural strength. Especially in the air conditioning units of construction machinery such as excavator air conditioners, the ribs are often affected by high temperatures and soften. At the same time, in the construction environment, the ribs are often penetrated by moisture or corrosive substances, which leads to the shortening of service life and the need for frequent replacement. This not only makes the operation cumbersome but also increases the maintenance cost of the air conditioner.
[0004] Therefore, a ribbed air filter for excavator air conditioning is proposed to address the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, where structural strength is often insufficient during practical use, especially in air conditioning units of construction machinery such as excavator air conditioners, the ribs are frequently affected by high temperatures, leading to softening and other issues. Furthermore, in engineering environments, the ribs are often exposed to moisture or corrosive substances, which shortens their lifespan and necessitates frequent replacements. This not only complicates operations but also increases the maintenance costs of the air conditioning system. Therefore, a new type of air filter rib for excavator air conditioners is proposed.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a rib for an excavator air conditioner filter, including a rib body, both ends of which are fixedly connected to mounting blocks. The rib body adopts a core-coating technology, and an inner core skeleton is provided inside the rib body. The inner core skeleton is made of nickel-titanium shape memory alloy using a hot-pressing process. The cross-section of the inner core skeleton is a honeycomb-like structure. A composite material layer is provided on the outside of the inner core skeleton.
[0007] Preferably, the composite material layer includes a wear-resistant and impact-resistant layer disposed on the outer surface of the inner core skeleton. The wear-resistant and impact-resistant layer is composed of high-hardness carbon fiber, and the high-hardness carbon fiber is filled with a polymer, the polymer being epoxy resin.
[0008] Preferably, the outer surface of the wear-resistant and impact-resistant layer is provided with a temperature-resistant protective layer, which is a nano-ceramic coating and is applied using plasma spraying technology.
[0009] Preferably, the outer surface of the heat-resistant protective layer is provided with a waterproof and corrosion-resistant layer, which is a fluorinated ethylene propylene copolymer film.
[0010] Preferably, the outer surface of the waterproof and corrosion-resistant layer is provided with an antibacterial layer, which is a graphene-polyimide composite material.
[0011] Preferably, the antibacterial layer is provided with a buffer sealing layer on the outside, and the buffer sealing layer is a polyurethane elastomer.
[0012] Preferably, the buffer sealing layer is provided with a filter trapping layer on the outside, and the filter trapping layer is a porous activated carbon material.
[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0014] 1. This utility model provides an air filter rib for an excavator air conditioner. By setting the cross-section of the inner core skeleton to a honeycomb-like structure, it enhances the compressive strength and lightness. The shape memory alloy can restore the original shape after deformation, adapting to the bending requirements during filter installation. The high-hardness carbon fiber of the wear-resistant and impact-resistant layer provides high hardness and wear resistance, extending the rib's life. The epoxy resin polymer can increase the rib's toughness and prevent brittleness. The wear-resistant and impact-resistant layer and the waterproof and corrosion-resistant layer can protect the rib from thermal stress damage, while achieving a superhydrophobic effect to prevent water penetration and improve the rib's resistance to acid and alkali corrosion.
[0015] 2. This utility model provides an air filter rib for an excavator air conditioner. The graphene material in the antibacterial layer has a physical antibacterial effect, which improves the cleanliness of the air outlet of the air conditioning unit of the construction machinery, thereby improving the safety effect. The porous activated carbon material in the filter capture layer can capture and intercept tiny particles in the air, thus playing a good role in purifying the air in construction machinery, especially in construction machinery with high dust pollution in the working environment such as excavators. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the rib body of this utility model.
[0018] In the diagram: 1. Rib body; 2. Mounting block; 10. Inner core skeleton; 11. Wear-resistant and impact-resistant layer; 12. Temperature-resistant protective layer; 13. Waterproof and corrosion-resistant layer; 14. Antibacterial layer; 15. Buffer sealing layer; 16. Filter and capture layer. 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] Specific implementation examples are given below.
[0021] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a rib for an excavator air conditioner filter, including a rib body 1, with mounting blocks 2 fixedly connected to both ends of the rib body 1. The rib body 1 adopts a core-wrapping technology, and an inner core skeleton 10 is provided inside the rib body 1. The inner core skeleton 10 adopts a hot-pressing process and is made of nickel-titanium shape memory alloy. The cross-section of the inner core skeleton 10 has a honeycomb-like structure, and a composite material layer is provided on the outside of the inner core skeleton 10. The cross-section of the inner core skeleton 10 has a honeycomb-like structure, which enhances the compressive strength and lightness. The shape memory alloy can restore its original shape after deformation, adapting to the bending requirements during filter installation.
[0022] It should be noted that the various material layers in the above composite material layer are bonded together with high-temperature resistant epoxy adhesive, which can effectively avoid interlayer delamination problems.
[0023] like Figure 2 As shown, the composite material layer includes a wear-resistant and impact-resistant layer 11 disposed on the outer surface of the inner core skeleton 10. The wear-resistant and impact-resistant layer 11 is composed of high-hardness carbon fiber, and the high-hardness carbon fiber is filled with a polymer. The polymer is made of epoxy resin. The carbon fiber provides high hardness and wear resistance, extending the life of the rib. The epoxy resin polymer can increase the toughness of the rib and prevent brittleness.
[0024] like Figure 2 As shown, the outer surface of the wear-resistant and impact-resistant layer 11 is provided with a temperature-resistant protective layer 12. The temperature-resistant protective layer 12 is a nano-ceramic coating. The temperature-resistant protective layer 12 adopts plasma spraying technology. The ceramic material has a wide temperature resistance range, which can protect the ribs from thermal stress damage. In addition, the nano-level coating improves the surface smoothness and reduces frictional resistance. The use of plasma spraying technology can ensure uniform adhesion of the ceramic layer.
[0025] like Figure 2 As shown, the outer surface of the heat-resistant protective layer 12 is provided with a waterproof and corrosion-resistant layer 13. The waterproof and corrosion-resistant layer 13 is a fluorinated ethylene propylene copolymer film. The fluorinated ethylene propylene copolymer film has extremely low surface energy, achieving a superhydrophobic effect to prevent water penetration. At the same time, it can improve the acid and alkali corrosion resistance of the ribs, making it more suitable for the complex working environment of the air conditioning unit of engineering machinery.
[0026] like Figure 2 As shown, the outer surface of the waterproof and corrosion-resistant layer 13 is provided with an antibacterial layer 14, which is a graphene-polyimide composite material. Graphene material has a physical antibacterial effect, which improves the cleanliness of the air outlet of the air conditioning unit of the engineering machinery, thereby improving the safety effect.
[0027] like Figure 2 As shown, the antibacterial layer 14 is provided with a buffer sealing layer 15 on the outside. The buffer sealing layer 15 is a polyurethane elastomer. The polyurethane elastomer has the effects of buffering, sealing and aging resistance. Its elastic modulus is adjustable and it can absorb vibration energy to protect the internal materials and skeleton structure. At the same time, the polyurethane elastomer has good resistance to ultraviolet aging and is suitable for use in the air conditioning unit of engineering machinery that is used outdoors for a long time.
[0028] like Figure 2 As shown, a filter and capture layer 16 is provided on the outside of the buffer sealing layer 15. The filter and capture layer 16 is made of porous activated carbon material. The porous activated carbon material can capture and intercept tiny particles in the air, thus playing a good role in purifying the air in construction machinery, especially in construction machinery with high dust pollution in the working environment, such as excavators.
[0029] The working principle of this utility model is as follows: In use, the rib body 1 is slightly bent, and then the mounting block 2 is used to install the rib body 1 inside the frame. During installation, the cross-section of the inner core skeleton 10 has a honeycomb-like structure, enhancing the compressive strength and lightweight of the rib body 1. The shape memory alloy can recover its original shape after deformation, adapting to the bending requirements during filter installation. This drives the air conditioning unit installed on the excavator. The porous activated carbon material of the filter layer 16 can capture and intercept tiny particles in the air, thus achieving a good air purification effect in construction machinery, especially in dusty environments such as excavators. During the operation of the construction machinery, the polyurethane elastomer of the buffer sealing layer 15 has buffering, sealing, and aging resistance effects. Its elastic modulus is adjustable, absorbing vibration energy and protecting the internal materials and skeleton structure. Simultaneously, the polyurethane elastomer has good UV aging resistance, thus extending the service life of the construction machinery air conditioning unit. The antibacterial layer 14 is graphene- Polyimide composite materials and graphene materials have physical antibacterial effects, avoiding the problem of bacteria growing on the surface of the filter after long-term use, thereby improving the cleanliness of the air outlet of the air conditioning unit of the construction machinery and thus improving the safety effect. There is often a large temperature difference between the daytime working state and the nighttime rest state of the air conditioning unit of the construction machinery. The nano-ceramic coating of the heat-resistant protective layer 12 has a wide temperature resistance range, which can protect the ribs from thermal stress damage. The nano-level coating improves the surface smoothness and reduces frictional resistance. The plasma spraying technology can ensure uniform adhesion of the ceramic layer. The fluorinated ethylene propylene copolymer film of the waterproof and corrosion-resistant layer 13 has extremely low surface energy, achieving a superhydrophobic effect, preventing water penetration, avoiding damage to the air conditioning unit of the construction machinery from air conditioning drips, and improving the resistance of the ribs to acid and alkali corrosion, so that the air conditioning unit of the construction machinery can adapt to various complex working environments. The carbon fiber in the wear-resistant and impact-resistant layer 11 provides high hardness and wear resistance, extending the life of the ribs, and the epoxy resin polymer can increase the toughness of the ribs and prevent brittleness.
[0030] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A rib for an excavator air conditioner filter, comprising a rib body (1), characterized in that: Both ends of the rib body (1) are fixedly connected to mounting blocks (2). The rib body (1) adopts core-wrapping technology and has an inner core skeleton (10) inside. The inner core skeleton (10) adopts hot pressing technology. The inner core skeleton (10) is a nickel-titanium shape memory alloy and has a honeycomb-like cross-section. The outer side of the inner core skeleton (10) is provided with a composite material layer.
2. The excavator air conditioner air filter rib according to claim 1, characterized in that: The composite material layer includes a wear-resistant and impact-resistant layer (11) disposed on the outer surface of the inner core skeleton (10). The wear-resistant and impact-resistant layer (11) is composed of high-hardness carbon fiber, and the high-hardness carbon fiber is filled with a polymer, the polymer being epoxy resin.
3. The excavator air conditioner air filter rib according to claim 2, characterized in that: The outer surface of the wear-resistant and impact-resistant layer (11) is provided with a temperature-resistant protective layer (12), which is a nano-ceramic coating and is applied using plasma spraying technology.
4. The excavator air conditioner air filter rib according to claim 3, characterized in that: The outer surface of the heat-resistant protective layer (12) is provided with a waterproof and corrosion-resistant layer (13), which is a fluorinated ethylene propylene copolymer film.
5. The excavator air conditioner air filter rib according to claim 4, characterized in that: The outer surface of the waterproof and corrosion-resistant layer (13) is provided with an antibacterial layer (14), which is a graphene-polyimide composite material.
6. The excavator air conditioner air filter rib according to claim 5, characterized in that: The antibacterial layer (14) is provided with a buffer sealing layer (15) on the outside, and the buffer sealing layer (15) is a polyurethane elastomer.
7. The excavator air conditioner air filter rib according to claim 6, characterized in that: The buffer sealing layer (15) is provided with a filter trapping layer (16) on the outside, and the filter trapping layer (16) is a porous activated carbon material.