Protective cover device for explosion-proof motor of air conditioner outdoor unit
The combination of a conical protective cover and a mounting bracket solves the problem of insufficient protection for explosion-proof motors in central air conditioning outdoor units, achieving multiple protections against falls, water and snow, and galvanic corrosion, thus improving the safety and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-04-03
AI Technical Summary
Existing explosion-proof motors lack effective protection in central air conditioning outdoor units, making the impeller susceptible to damage from falling hard objects or metal objects, easy intrusion of rainwater or snow, and posing a risk of galvanic corrosion, which affects equipment safety and lifespan.
It adopts a combination structure of conical protective cover and mounting bracket, uses SS316L stainless steel material and anti-rust coating, combined with polytetrafluoroethylene pads to isolate different metals, and designs U-shaped mounting holes and compression spring structure to achieve multiple protections.
It effectively prevents falling objects from entering the motor, prevents rainwater and snow from entering, avoids galvanic corrosion, improves installation stability and equipment safety, reduces costs and is easy to maintain.
Smart Images
Figure CN224080321U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of explosion-proof motor protection for the condenser fan of the outdoor unit of an explosion-proof central air conditioning equipment, specifically to an explosion-proof motor protection cover device for an air conditioning outdoor unit. Background Technology
[0002] In the top-discharge structure of a central air conditioning outdoor unit, the explosion-proof motor must be installed vertically, with its cooling fan blades facing upwards and exposed to the external environment. In existing technology, the lack of effective protective devices for externally mounted explosion-proof motors leads to the following problems: hard objects or falling metal objects can easily enter the motor's cooling fan blades, damaging the impeller, and may even cause an explosion due to sparks generated by high-speed collisions; outdoor rainwater and snow can easily penetrate the motor's interior, affecting normal operation; and when the protective device is in direct contact with a metal of the motor, there is a risk of galvanic corrosion, shortening its service life.
[0003] To solve the above problems, there is an urgent need for a protective device that combines the functions of preventing falling objects, waterproofing, snowproofing, and galvanic corrosion protection. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an explosion-proof motor protection cover device for air conditioner outdoor units, which achieves multiple protection functions through the combination structure of conical protective cover and mounting bracket.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An explosion-proof motor protective cover for an air conditioner outdoor unit includes a protective cover and a mounting bracket. A support is fixed under the protective cover, and a mounting platform is provided on the mounting bracket for fixing the support. The mounting bracket has mounting holes.
[0007] The protective cover has a conical structure with a cone angle ranging from 90° to 120°, effectively guiding falling objects to slide off and preventing them from entering the motor's cooling fan. The cover is made of SS316L stainless steel with a rust-proof coating, making it suitable for highly corrosive environments. The support frame consists of four SS316 support rods, one end of which is welded to the inner edge of the cover, and the other end has a slotted screw mounting hole for fixing it to the motor's air inlet cover with bolts.
[0008] A 2mm PTFE spacer is placed between the mounting bracket and the explosion-proof motor to isolate different metal materials and prevent galvanic corrosion. The bracket can be a compression spring structure, and the mounting height can be adjusted with fixing plates, studs, and nuts to accommodate installation errors. The mounting holes are designed in a U-shape for easy adjustment of the installation position.
[0009] Compared with existing explosion-proof motor protection covers for air conditioner outdoor units, this utility model has at least the following advantages:
[0010] For falling object and explosion safety, the conical protective cover, with its 90°~120° tilt angle design, effectively guides falling hard objects or metals to slide off, preventing them from entering the motor cooling fan area and fundamentally eliminating the risk of impeller damage and spark explosions caused by high-speed collisions.
[0011] Waterproof and snowproof all-weather protection, the conical structure forms a physical barrier to prevent rainwater from seeping in or snow from covering the motor air inlet, ensuring the motor continues to operate safely in severe weather.
[0012] The installation offers flexibility and reliability. The U-shaped mounting hole design allows for fine-tuning of the installation position, accommodating different motor models. The bracket uses waist-shaped screw holes and a compression spring structure, which can buffer impact force, compensate for installation errors, and improve installation stability.
[0013] Low cost and easy maintenance, simple structure, standardized parts, low manufacturing cost and convenient maintenance, suitable for large-scale promotion. Attached Figure Description
[0014] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of the explosion-proof motor protective cover device for the outdoor unit of the air conditioner;
[0016] Figure 2 This is an exploded view of the explosion-proof motor protective cover device for the outdoor unit of the air conditioner;
[0017] Figure 3 This is a schematic diagram of the structure of the mounting bracket;
[0018] Figure 4 It is the aforementioned Figure 1 Partial structural diagram;
[0019] Figure 5 This is an installation effect diagram of the explosion-proof motor protective cover device for the outdoor unit of the air conditioner.
[0020] In the diagram: 1. Protective cover; 2. Bracket; 3. Mounting bracket; 4. Mounting platform; 5. Mounting hole; 6. Fixing plate; 7. Stud; 8. Nut. Detailed Implementation
[0021] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other. Example 1:
[0024] like Figure 1-5 As shown, the protective cover device in this embodiment includes a protective cover 1, a bracket 2, a mounting bracket 3, a mounting platform 4, and a mounting hole 5.
[0025] The protective cover 1 is conical with a cone angle of 110°, made of SS316L stainless steel, and coated with an epoxy resin anti-corrosion coating. The bracket 2 consists of four SS316 support rods, one end of which is welded to the inner edge of the protective cover 1, and the other end is connected to the mounting platform 4 through a waist-shaped screw hole. The mounting hole 5 of the mounting bracket 3 is U-shaped and is fixed to the tail end of the motor with bolts.
[0026] A fixing plate 6 is installed between bracket 2 and mounting bracket 3. A stud 7 is welded to the end face of fixing plate 6. The stud 7 passes through mounting platform 4 and is locked by nut 8. Bracket 2 and mounting bracket 3 are connected by a threaded connection between stud 7 and nut 8, forming an adjustable height compression spring structure. A polytetrafluoroethylene (PTFE) pad is placed between the explosion-proof motor and mounting bracket 3 to avoid direct metal-to-metal contact. Example 2:
[0027] Based on Example 1, the cone angle of the protective cover 1 is adjusted to 90°, and the bracket 2 uses a high-strength compression spring to further buffer the impact of falling objects. The length of the U-shaped groove in the mounting hole 5 is adapted to different models of motors, improving versatility.
[0028] This utility model effectively solves the safety hazards of explosion-proof motors in outdoor environments and extends the service life of equipment through a conical protective cover, anti-corrosion structure and electrical isolation design.
Claims
1. An air conditioner outdoor unit explosion-proof motor protection cover device, characterized in that: The utility model relates to a protective cover device for air conditioner outdoor unit explosion -proof motor, including protective cover (1), mounting frame (3), the support (2) is fixed below the protective cover (1), be equipped with installation platform (4) on the mounting frame (3), the support (2) is installed on the installation platform (4), mounting hole (5) is seted up on the mounting frame (3).
2. The explosion-proof motor protection cover device for an outdoor unit of an air conditioner according to claim 1, characterized in that: The protective cover is conical, and the cone angle ranges between 90° and 120°.
3. The explosion-proof motor protection cover device for an outdoor unit of an air conditioner according to claim 1, characterized in that: The protective cover device is coated with an anti-rust coating.
4. The explosion-proof motor protection cover device for an outdoor unit of an air conditioner according to claim 1, characterized in that: The support (2) is a compression spring.
5. The explosion-proof motor protection cover device for an outdoor unit of an air conditioner according to claim 1, characterized in that: One end of the support (2) is welded with a fixing sheet (6), the end surface of the fixing sheet (6) is provided with a stud (7), the stud (7) penetrates through the installation platform (4), one end of the stud (7) is provided with a nut (8), the support (2) and the mounting frame (3) are threadedly connected through the stud (7) and the nut (8).
6. The explosion-proof motor protection cover device for an outdoor unit of an air conditioner according to claim 1, characterized in that: The mounting hole (5) is U-shaped.