A protective cover for an air cooler
By using a double-layer V-shaped air guide plate structure and drive mechanism, the problem of existing air cooler protective covers being unable to protect against both large and small foreign objects has been solved, thus achieving a comprehensive improvement in protection effectiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SHANKE REFRIGERATION EQUIP CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-31
AI Technical Summary
Existing air cooler protective covers are unable to effectively block both large and small foreign objects at the same time. If the mesh is too large, it cannot block small flying insects, and if the mesh is too small, it is easy to get clogged, resulting in a single protective effect.
The design incorporates a double-layer V-shaped air guide plate structure. The outer air guide plate blocks large foreign objects, while the inner air guide plate blocks small foreign objects. The air guide plates rotate synchronously through a drive mechanism, and the gap size can be adjusted to accommodate different foreign objects. Combined with a sealing rubber gasket, the sealing performance is improved.
It achieves comprehensive protection against foreign objects of both large and small sizes, avoids problems caused by meshes that are too large or too small, improves the protective effect, and is suitable for widespread application.
Smart Images

Figure CN224580540U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air coolers, specifically an air cooler protective cover. Background Technology
[0002] An evaporative air cooler protective cover is a protective mechanism specifically designed for evaporative air coolers. Its main function is to provide physical protection for the equipment while ensuring the normal operation of the evaporative air cooler, preventing external foreign objects from entering the interior. Existing evaporative air cooler protective covers typically use a simple single-layer planar mesh structure, which is difficult to cover both large and small particles. Mesh openings that are too large cannot block small flying insects, while mesh openings that are too small pose a high risk of clogging. The protective effect is also limited. Therefore, we have designed a comprehensive evaporative air cooler protective cover. Utility Model Content
[0003] This invention provides a protective cover for an air cooler to address the deficiencies in the prior art.
[0004] This utility model is achieved through the following technical solution:
[0005] A protective cover for an evaporative air cooler includes an evaporative air cooler body with an air inlet on one side. A box with openings on both sides is located at the air inlet and mounted on the evaporative air cooler body. Two rows of air guide plates, one inner and one outer, are rotatably mounted inside the box. The front and rear ends of the air guide plates slide in contact with the inner wall of the box, forming a V-shaped airflow guide and protective plate. The gap between adjacent air guide plates in the outer layer is large, while the gap between adjacent air guide plates in the inner layer is small. A first drive mechanism on the box drives the outer air guide plates to rotate synchronously, and a second drive mechanism on the box drives the inner air guide plates to rotate synchronously.
[0006] As described above, a protective cover for an air cooler has several reinforcing plates fixedly installed on the outer wall of the housing. The reinforcing plates are detachably installed on the outer wall of the air cooler body by bolts.
[0007] As described above, in a evaporative air cooler protective cover, the first drive mechanism includes several first gears. The first shaft at one end of the outer air guide plate extends out of the box body through the reserved holes on the box body. The first gear corresponds one-to-one with the first shaft extending out of the box body and is fixedly installed on the corresponding first shaft. Adjacent first gears are connected by a first transmission gear. The first transmission gear is rotatably installed on the outer wall of the box body.
[0008] As described above, in a evaporative air cooler protective cover, the second drive mechanism includes several second gears. The first rotating shaft at one end of the inner air guide plate extends out of the box body through the reserved holes on the box body. The second gear corresponds one-to-one with the first rotating shaft on the inner air guide plate and is fixedly installed on the corresponding first rotating shaft. Adjacent second gears are connected by a second transmission gear. The second transmission gear is rotatably installed on the outer wall of the box body.
[0009] As described above, a protective cover for a cold air blower has hexagonal grooves on one of the first gears and one of the second gears.
[0010] As described above, in a protective cover for an air cooler, several grooves are respectively opened on the side of the air cooler body and the box that are close to each other. The grooves on the air cooler body correspond one-to-one with the grooves on the box and are interconnected. The same sealing rubber gasket is placed in the two interconnected grooves.
[0011] The advantages of this utility model are: it has a simple structure and ingenious design. By setting up a double-layered V-shaped protective plate, it can achieve comprehensive protection. The outer air guide plate can block large foreign objects (leaves, paper scraps, etc.), while the inner air guide plate can block small foreign objects (willow catkins, flying insects, etc.). It takes into account both large and small foreign objects. It will not fail to block small flying insects due to excessively large mesh, nor will it become clogged due to excessively small mesh. It has a good protective effect, can meet market demand, and is suitable for promotion. Attached Figure Description
[0012] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 The right view; Figure 3 yes Figure 1 The left view; Figure 4 yes Figure 1 Part I enlarged view.
[0014] Reference numerals in the attached drawings: 1. Air cooler body, 2. Air inlet, 3. Air guide plate, 4. First rotating shaft, 5. Box body, 20. Reinforcing plate, 21. Bolt, 30. First gear, 31. First transmission gear, 32. Second rotating shaft, 40. Second gear, 41. Second transmission gear, 50. Hexagonal groove, 60. Groove, 61. Sealing rubber gasket. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0016] A type of evaporative air cooler protective cover, such as Figure 1 , 2 As shown in Figures 3 and 4, the device includes a cooler body 1, an air inlet 2 on one side of the cooler body 1, and a box 5 with openings on both sides at the air inlet 2. The box 5 is mounted on the cooler body 1. Two rows of air guide plates 3 are rotatably installed inside the box 5. The front and rear ends of the air guide plates 3 are respectively fixedly mounted with first rotating shafts 4. The first rotating shafts 4 are rotatably mounted on the box 5 through sealed bearings. The front and rear ends of the air guide plates 3 are respectively in sliding contact with the inner wall of the box 5. The two rows of air guide plates 3 form a V-shaped airflow guide and protection plate. The gap between adjacent air guide plates 3 in the outer layer is large, and the gap between adjacent air guide plates 3 in the inner layer is small. The number of air guide plates 3 in the outer layer is less than the number of air guide plates 3 in the inner layer. The box 5 is provided with a first drive mechanism to drive the several air guide plates 3 in the outer layer to rotate synchronously, and a second drive mechanism to drive the several air guide plates 3 in the inner layer to rotate synchronously. This utility model has a simple structure and ingenious design. By setting up a double-layered V-shaped protective plate, it can achieve comprehensive protection. The outer air guide plate 3 can block large foreign objects (leaves, paper scraps, etc.), while the inner air guide plate 3 can block small foreign objects (willow catkins, flying insects, etc.). It takes into account both large and small foreign objects. It is not difficult to block small flying insects due to excessively large mesh, nor is it clogged due to excessively small mesh. It has a good protective effect, can meet market demand, and is suitable for promotion. When using this utility model, the first driving mechanism drives the outer layer of several air guide plates 3 and the first rotating shaft 4 to rotate synchronously, and the second driving mechanism drives the inner layer of several air guide plates 3 and the first rotating shaft 4 to rotate synchronously. After the outer and inner layers of several air guide plates 3 rotate synchronously at a certain angle, a gap is formed. The tilt angles of the air guide plates 3 are different, and the gaps between adjacent air guide plates 3 are different. The gaps between the outer layer of air guide plates 3 are larger than the gaps between the inner layer of air guide plates 3. The outer layer of air guide plates 3 can block larger foreign objects such as leaves and pieces of paper, while the inner layer of air guide plates 3 can block small flying insects and other foreign objects. Outside air enters the air inlet 2 through the gaps between the outer layer of air guide plates 3 and the gaps between the inner layer of air guide plates 3, and then enters the air cooler body 1 through the air inlet 2. When the air cooler is not in use, the first driving mechanism and the second driving mechanism drive the air guide plates 3 of the inner and outer layers to rotate to vertical, and the adjacent air guide plates 3 of the same layer abut against each other, blocking the opening of the box 5.
[0017] Specifically, as shown in the figure, in this embodiment, several reinforcing plates 20 are fixedly installed on the outer wall of the housing 5. The reinforcing plates 20 are detachably installed on the outer wall of the air cooler body 1 by bolts 21. By turning the bolts 21 and removing them from the air cooler body 1, the reinforcing plates 20 can be separated from the air cooler body 1, thereby removing the housing 5 from the air cooler body 1.
[0018] Specifically, as shown in the figure, the first drive mechanism in this embodiment includes several first gears 30. The first rotating shaft 4 at one end of the outer air guide plate 3 passes through the reserved holes on the box body 5 and extends out of the box body 5. The outer circumference of the first rotating shaft 4 at one end of the outer air guide plate 3 is fixedly connected to the inner ring of the coaxial sealed bearing. The outer ring of the sealed bearing is fixedly connected to the inner circumference of the corresponding reserved hole. The first gear 30 corresponds one-to-one with the first rotating shaft 4 extending out of the box body 5 and is fixedly installed on the corresponding first rotating shaft 4. The first gear 30 and the corresponding first rotating shaft 4 are coaxially arranged. Adjacent first gears 30 are respectively connected by first transmission gears 31. The first transmission gears 31 are respectively rotatably installed on the outer wall of the box body 5. One end of the coaxial second rotating shaft 32 is fixedly connected to the first transmission gear 31. The outer circumference of the other end of the second rotating shaft 32 is fixedly connected to the inner ring of the coaxial bearing. The outer ring of the bearing is fixedly connected to the outer wall of the box body 5. One of the first gears 30 is driven, and the first gear 30 drives the other first gears 30 and the first transmission gear 31 to rotate synchronously through the first transmission gear 31, thereby driving the first rotating shaft 4 and the outer air guide plate 3 to rotate synchronously.
[0019] Further, as shown in the figure, the second drive mechanism in this embodiment includes several second gears 40. The first rotating shaft 4 at one end of the inner air guide plate 3 passes through the reserved holes on the box body 5 and extends out of the box body 5. The outer circumference of the first rotating shaft 4 at one end of the inner air guide plate 3 is fixedly connected to the inner ring of the coaxial sealed bearing. The outer ring of the sealed bearing is fixedly connected to the inner circumference of the corresponding reserved hole. The second gear 40 corresponds one-to-one with the first rotating shaft 4 on the inner air guide plate 3 and is fixedly installed on the corresponding first rotating shaft 4. The second gear 40 is coaxially arranged with the corresponding first rotating shaft 4. Adjacent second gears 40 are respectively connected by a second transmission gear 41. The second transmission gear 41 is rotatably installed on the outer wall of the box body 5. One end of the coaxial third rotating shaft is fixedly connected to the second transmission gear 41. The outer circumference of the other end of the third rotating shaft is fixedly connected to the inner ring of the coaxial bearing. The outer ring of the bearing is fixedly connected to the outer wall of the box body 5. One of the second gears 40 is driven, and the second gear 40 drives the other second gears 40 and the second transmission gear 41 to rotate synchronously, thereby driving the first rotating shaft 4 and the air guide plate 3 of the inner layer to rotate synchronously.
[0020] Furthermore, as shown in the figure, in this embodiment, a hexagonal groove 50 is respectively formed on one of the first gears 30 and one of the second gears 40. The hexagonal groove 50 facilitates the rotation of the first gear 30 and the second gear 40.
[0021] Furthermore, as shown in the figure, in this embodiment, several grooves 60 are respectively formed on the side of the air cooler body 1 and the housing 5 that are close to each other. The grooves 60 on the air cooler body 1 correspond one-to-one with the grooves 60 on the housing 5 and are interconnected. The same sealing rubber gasket 61 is placed in the two interconnected grooves 60. The sealing rubber gasket 61 can increase the sealing between the air cooler body 1 and the housing 5.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A protective cover for an air cooler, comprising an air cooler body (1), an air inlet (2) being provided on one side of the air cooler body (1), and a box (5) with openings on both sides being provided at the air inlet (2), the box (5) being installed on the air cooler body (1), characterized in that: The inner and outer layers of two rows of air guide plates (3) are rotatably installed inside the box (5). The front and rear ends of the air guide plates (3) are in sliding contact with the inner wall of the box (5) respectively. The two rows of air guide plates (3) form a V-shaped air guide and protection plate. The gap between adjacent air guide plates (3) of the outer layer is large, and the gap between adjacent air guide plates (3) of the inner layer is small. The box (5) is provided with a first drive mechanism to drive several air guide plates (3) of the outer layer to rotate synchronously, and the box (5) is provided with a second drive mechanism to drive several air guide plates (3) of the inner layer to rotate synchronously.
2. A cooling fan guard according to claim 1, wherein: Several reinforcing plates (20) are fixedly installed on the outer wall of the box (5). The reinforcing plates (20) are detachably installed on the outer wall of the air cooler body (1) by bolts (21).
3. A cooling fan guard according to claim 1, wherein: The first drive mechanism includes several first gears (30). The first shaft (4) at one end of the outer air guide plate (3) extends out of the box body (5) through the reserved hole on the box body (5). The first gear (30) corresponds one-to-one with the first shaft (4) extending out of the box body (5) and is fixedly installed on the corresponding first shaft (4). The adjacent first gears (30) are connected by a first transmission gear (31). The first transmission gear (31) is rotatably installed on the outer wall of the box body (5).
4. The cooling fan shroud of claim 1, wherein: The second drive mechanism includes several second gears (40). The first shaft (4) at one end of the inner air guide plate (3) passes through the reserved hole on the box body (5) and extends out of the box body (5). The second gear (40) corresponds one-to-one with the first shaft (4) on the inner air guide plate (3) and is fixedly installed on the corresponding first shaft (4). Adjacent second gears (40) are connected by a second transmission gear (41). The second transmission gear (41) is rotatably installed on the outer wall of the box body (5).
5. A cooling fan guard according to claim 3, wherein: Hexagonal grooves (50) are respectively provided on one of the first gears (30) and one of the second gears (40).
6. A cooling fan guard according to claim 1, wherein: Several grooves (60) are respectively opened on the side of the air cooler body (1) and the box (5) that are close to each other. The grooves (60) on the air cooler body (1) correspond one-to-one with the grooves (60) on the box (5) and are connected to each other. The same sealing rubber gasket (61) is placed in the two connected grooves (60).