Vibration reduction structure of micro-vibration air conditioner fan and mounting method

Abstract

The invention relates to the technical field of air conditioner fan vibration reduction, in particular to a micro-vibration air conditioner fan vibration reduction structure and a mounting method.The micro-vibration air conditioner fan vibration reduction structure comprises first vibration isolation equipment, a fan, a soft connection pipeline and suspension vibration isolation equipment, the fan is arranged on the first vibration isolation equipment, the soft connection pipeline is connected to the fan, and the suspension vibration isolation equipment is symmetrically arranged; the soft connection pipeline is arranged on the suspension vibration isolation equipment, and the first vibration isolation equipment comprises a profile steel support, a damping spring shock absorber, a steel backer, a rubber gasket, a steel plate base and a cement base. The method of rubber pads and spring vibration isolators is adopted, the double vibration isolation effect is achieved, the influence of fan vibration on the structure is reduced, meanwhile, a construction method and acceptance standards are specified, noise reduction and vibration attenuation construction quality can be improved, and vibration transmitted to a pipeline by equipment is reduced on the basis of traditional soft connection. The scheme of floor stand spring vibration reduction, vibration isolation pads and vibration isolators is additionally designed, and the influence of pipeline vibration on the indoor environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioner fan vibration reduction, in particular to a micro-vibration air conditioner fan vibration reduction structure and an installation method. Background Art

[0002] In air conditioning projects, air is divided into fresh air, return air, and make-up air, which are sent to the air conditioning box equipment. After being processed (heating, cooling, humidification, dehumidification, sterilization, etc.), it is sent into the room. The function of the exhaust system is to maintain the indoor pressure and meet the freshness of the indoor air (number of air changes). In the air conditioning system, the air supply and exhaust are generally powered by fans, and the fans are generally installed in the equipment room (air supply) or on the roof (exhaust). When the air conditioner is running, the continuous work of the fan will cause a lot of vibration. The conventional mitigation method is to buffer the equipment in various forms (generally springs or rubber vibration isolation pads) and install it on a concrete or steel foundation. The vibration of the equipment is largely absorbed by the vibration absorber. However, during the construction process, due to the dual influence of construction period and cost, it is easy to cause the fan and the equipment foundation to not fit well, the vibration isolation pad is selected incorrectly, and the quality of the vibration reduction material is poor. The problem causes strong fan vibration when the building is newly built or has been in operation for a period of time, resulting in the following troubles; 1. The vibration of the fan causes a lot of noise in the surrounding area of ​​the installation environment. On the one hand, the vibration of the fan is directly transmitted to various forms of foundations, and the foundation is generally connected to the building structure, causing the noise caused by the vibration to be transmitted to the room; on the other hand, the vibration of the fan is transmitted to the pipes connected to it. If the soft connection form of the pipe is wrong or the material performance is poor, the vibration will be transmitted to the room along the pipe, thus affecting the indoor working and learning environment. In the long term, the cracks caused by the vibration at the connection between the pipe and the wall may cause water seepage; 2. A large amount of fan vibration is not well absorbed or alleviated, which will directly affect the service life of the fan. Irregular construction is the direct cause of excessive fan vibration, which further shortens the service life of the fan. At the same time, vibration will affect the rotation trajectory of the fan impeller, thereby affecting the efficiency of the equipment. 3. The occurrence of vibration can easily cause damage to the structure, aggravating the damage to the equipment foundation and floor slab, thereby increasing the frequency of vibration and forming a vicious circle.

[0003] In addition, the current construction of wind turbines lacks unified standards and program constraints. Although there are many types of vibration reduction forms, they are targeted at different objects and are easily mixed during the construction process, which may affect the vibration reduction effect. Therefore, the above problems need to be improved. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a vibration reduction structure and an installation method for a micro-vibration air conditioner fan.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a micro-vibration air-conditioning fan vibration reduction structure, including a first vibration isolation device, an air duct connected to the fan through a flexible pipe, and a suspension vibration isolation device for suspending the air duct, wherein the fan is arranged on the first vibration isolation device, the flexible pipe is used to achieve flexible connection between the air duct extending from the fan and the air duct entering the house, the suspension vibration isolation device is arranged on the ground, and the air duct is fixed by the suspension vibration isolation device to prevent vibration between the floor or other air ducts. Preferably, the first vibration isolation device includes a steel support, a damping spring shock absorber, a steel backer, a rubber gasket, a steel plate base and a cement base, the rubber gasket is arranged on the outside of the cement base, the steel plate base is fixedly connected to the upper end of the rubber gasket, the steel backer is symmetrically arranged on both sides of the cement base, and the upper end of the steel backer is pressed on the upper side ends of the rubber gasket, the steel plate base and the cement base, the damping spring shock absorber is fixedly connected to the steel plate base by bolts, and the steel support is fixedly connected to the upper end of the damping spring shock absorber.

[0006] Preferably, the fan is arranged in the middle of the upper end of the steel support.

[0007] Preferably, the suspension vibration isolation device includes a suspension rod, a suspension connecting frame, a connecting buffer pressure plate, a buffer vibration damping spring, a fixed connecting rod, a steel casing, a second vibration isolation device and a connecting support plate, the connecting support plate is symmetrically arranged at the upper end of the second vibration isolation device, the steel casing is fixedly connected to the upper end of the connecting support plate, the fixed connecting rod is symmetrically fixedly connected to the upper end of the steel casing, the suspension connecting frame is symmetrically arranged above the steel casing, the buffer vibration damping spring is fixedly installed inside the suspension connecting frame, the connecting buffer pressure plate is fixedly connected to the upper end of the buffer vibration damping spring, the fixed connecting rod passes through the suspension connecting frame and is fixedly connected to the middle part of the connecting buffer pressure plate, and the suspension rod is fixedly connected to the upper end of the suspension connecting frame.

[0008] Preferably, a rubber sleeve is fixedly provided inside the steel sleeve.

[0009] Preferably, the flexible pipe is fixedly arranged inside the steel casing.

[0010] Preferably, the second vibration isolation device has the same structure as the first vibration isolation device except that no cement base is provided at the bottom, and the second vibration isolation device is laid and installed in the same manner as the first vibration isolation device.

[0011] Preferably, the rubber gasket has a thickness of 1 cm.

[0012] Preferably, the distance between the two suspension vibration isolation devices is 300 mm.

[0013] A method for installing a micro-vibration air conditioner fan vibration reduction structure, comprising the following steps: S0: In order to ensure uniform force on the damping spring isolator (6) in the vibration reduction structure of the micro-vibration air conditioner fan, the present invention adopts a finite element calculation method to determine the optimal setting position of the fan (2) on the steel frame steel bracket (5). Due to the diversity of the internal structure of the fan, its center of gravity position may be different, resulting in different forces on the steel frame. Therefore, setting the fan at the center of the steel frame may not ensure uniform compression of the spring isolator.

[0014] Through finite element analysis, we can accurately simulate the stress of the fan during operation, so as to determine the optimal position of the fan on the steel frame. This position ensures that the compression deviation of the spring isolator is controlled within 1mm, thus ensuring the uniformity of the vibration reduction effect and the stability of the fan.

[0015] The steps of finite element calculation include: Create geometric models of wind turbines and steel frames.

[0016] Define material properties and boundary conditions.

[0017] Conduct structural and force analysis and calculate the force conditions of the fan and the compression of the spring when the spring isolators are set at different positions.

[0018] Determine the fan position that will most evenly load the spring isolators.

[0019] In this way, we can ensure that the fan installation not only meets the vibration reduction requirements, but also improves the stability and service life of the entire system.

[0020] S1. Clean the site and pour the concrete foundation. Curing for 7 days to form strength, reaching C20 or above. Test the flatness of the concrete foundation. After the flatness meets ≤1mm, lay the rubber cushion layer to form a rubber gasket. Check the flatness of the rubber gasket. The combination of the rubber gasket and the concrete is required to meet ≤2mm. S2. Lay the steel plate base on the rubber gasket, check the position of the screw holes to ensure that the fan can be fixed, and check that the flatness of the processed surface of the steel plate base is controlled within 1mm. In this way, the overall flatness of the concrete plus rubber plus steel plate is controlled within 3mm; S3. Install rubber pads with similar shapes and matching models to the steel backing around the concrete foundation to facilitate isolation from the steel backing. Install steel backings on both sides of the concrete foundation. The steel backings are close to the rubber pads. Install the fan module on the steel plate base. The fan module is installed on the steel plate base through a damping spring shock absorber. S4. Make a steel casing and connect it to the second vibration isolation device. The vibration-damping pad in the second vibration isolation device is connected to the steel pad. The flatness of the steel pad is within 1mm. Make a basin-shaped rubber pad. The size of the inner basin is exactly the size of the steel pad. Its flatness is within 1mm. The steel pad plus the bracket column are placed in the basin-shaped rubber base. Check that the overall flatness of the bottom is within 2mm. Two-shaped steel backings are set on both sides of the basin-shaped rubber base. One side of the bottom of the steel backing is connected to the concrete floor slab through expansion bolts. The bottom of the steel casing is bolted to the connecting support plates on both sides. Rubber sleeves are attached to the middle and side of the steel casing. The wide side exceeds the width of the steel casing by 1cm. The buffer vibration-damping spring is installed on the suspension connection frame on the upper part of the steel casing. S5. Make another horizontal bar on the top to connect the air ducts above by the above method. Vibration isolation is performed between the air ducts by using a suspension spring vibration reduction device similar to that of equipment to prevent the vibrating pipes from transmitting vibration to the pipes above or the floor below. S6 After the above works are accepted, install the air ducts, reducers or flexible joints and other components and accessories connected to the equipment according to the requirements of the drawings; S7 vibration detection, including monitoring of equipment and pipeline bodies and floor vibration detection. If it does not meet the design requirements, the models or materials of various vibration absorbers and rubber vibration damping pads will be replaced, or design changes will be made until the design acceptance requirements are met.

[0021] Beneficial effects of the present invention: 1. The present invention adopts rubber pads and spring vibration isolators to achieve dual vibration isolation effects, reducing the impact of fan vibration on the structure. At the same time, it stipulates construction methods and acceptance standards, which is conducive to improving the quality of noise reduction and vibration reduction construction. For the vibration transmitted to the pipeline by the equipment, on the basis of traditional soft connection, a floor bracket spring vibration reduction plus vibration isolation pad plus vibration isolator is added to reduce the impact of pipeline vibration on the indoor environment.

[0022] 2. The present invention solves the damage to the building structure caused by the vibration of the fan and the pipeline, and at the same time can increase the service life of the unit system. Due to the reduction of vibration, the fan will run more smoothly, so the working efficiency of the equipment is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective; Figure 2 It is a schematic diagram of the side-view stereoscopic structure of the main body in the present invention; Figure 3 It is a schematic structural diagram of the first vibration isolation device in the present invention; Figure 4It is a schematic diagram of the structure of the suspension vibration isolation device in the present invention; Figure 5 It is a schematic diagram of the steel casing structure in the present invention.

[0025] Figure 6 It is a schematic diagram of the fireproof basin-shaped rubber pad in the present invention.

[0026] In the figure: 1-first vibration isolation device, 2-fan, 3-flexible pipe, 4-suspension vibration isolation device, 5-steel bracket, 6-damping spring shock absorber, 7-steel backer, 8-rubber gasket, 9-steel plate base, 10-cement base, 11-suspension rod, 12-suspension connection frame, 13-connection buffer pressure plate, 14-buffer vibration reduction spring, 15-fixed connection rod, 16-steel casing, 17-second vibration isolation device, 18-connection support plate, 19-rubber sleeve, 20-fireproof basin-shaped rubber pad, 21-fireproof rubber pad, 22-rubber inner turn surface. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The present invention is further described below in conjunction with the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, a micro-vibration air-conditioning fan vibration reduction structure and installation method of the present invention includes a first vibration isolation device 1, a fan 2, a flexible pipe 3 and a suspended vibration isolation device 4, the fan 2 is arranged on the first vibration isolation device 1, the flexible pipe 3 is connected to the fan 2, the suspended vibration isolation device 4 is symmetrically arranged, and the flexible pipe 3 is arranged on the suspended vibration isolation device 4.

[0031] like Figure 3 As shown, the first vibration isolation device 1 includes a steel support 5, a damping spring shock absorber 6, a steel backing 7, a rubber gasket 8, a steel plate base 9 and a cement base 10. The rubber gasket 8 is arranged outside the cement base 10, the steel plate base 9 is fixedly connected to the upper end of the rubber gasket 8, the steel backing 7 is symmetrically arranged on both sides of the cement base 10, and the upper end of the steel backing 7 is pressed and arranged on the upper side ends of the rubber gasket 8, the steel plate base 9 and the cement base 10. The damping spring shock absorber 6 is fixedly connected to the steel plate base 9 by bolts, and the steel support 5 is fixedly connected to the upper end of the damping spring shock absorber 6. The rubber gasket 8, the steel plate base 9 and the cement base 10 are arranged to play a role in stable laying. Among these components, a thick fireproof rubber pad 21 is specially introduced, which is located between the steel plate base 9 and the cement base 10, and plays a vital role in floating vibration isolation. The fireproof rubber pad 21 is located on the top of the cement base 10. It is a key vibration reduction component, and its fireproof characteristics provide additional safety for the entire structure. This rubber pad can not only effectively isolate the vibration between the upper fan 2 and the lower foundation structure, but also play the role of local floating vibration reduction, reducing the impact of vibration on the building structure.

[0032] In the micro-vibration air conditioner fan vibration reduction structure of the present invention, the design of the steel frame type steel bracket (5) not only provides support for the fan (2), but also has an important vibration isolation function. The steel frame type steel bracket (5) acts as an inert block due to its large weight and rigidity.

[0033] In the vibration isolation system, the function of the inertial block is to increase the static weight of the system so that the vibration energy generated by the fan (2) during operation can be absorbed by the weight of the inertial block, thereby reducing the transmission of vibration to the surrounding structure. This design effectively reduces the impact of fan vibration on the building structure and also improves the operating stability of the fan.

[0034] Through this design, the present invention not only achieves effective vibration isolation of the fan, but also improves the operating efficiency and service life of the air-conditioning system, while also providing a quieter and more comfortable condition for the indoor environment.

[0035] A micro-vibration air conditioner fan vibration reduction structure comprises a first vibration isolation device 1, an air duct connected to a fan 2 via a flexible connection pipe (3), and a suspension vibration isolation device 4 for suspending the air duct, wherein the fan 2 is arranged on the first vibration isolation device 1, the flexible connection pipe 3 is used to realize a flexible connection between the air duct extending from the fan 2 and the air duct entering the house, the suspension vibration isolation device is arranged on the ground, and the air duct is fixed by the suspension vibration isolation device 4 to prevent vibration with the floor or other air ducts. The fan 2 is arranged at the middle of the upper end of a steel support 5.

[0036] like Figure 4 and Figure 5As shown, the suspension vibration isolation device 4 includes a suspension rod 11, a suspension connection frame 12, a connection buffer pressure plate 13, a buffer vibration damping spring 14, a fixed connection rod 15, a steel casing 16, a second vibration isolation device 17 and a connection support plate 18. The connection support plate 18 is symmetrically arranged at the upper end of the second vibration isolation device 17, the steel casing 16 is fixedly connected to the upper end of the connection support plate 18, the fixed connection rod 15 is symmetrically fixedly connected to the upper end of the steel casing 16, the suspension connection frame 12 is symmetrically arranged above the steel casing 16, the buffer vibration damping spring 14 is fixedly installed inside the suspension connection frame 12, the connection buffer pressure plate 13 is fixedly connected to the upper end of the buffer vibration damping spring 14, the fixed connection rod 15 passes through the suspension connection frame 12 and is fixedly connected to the middle part of the connection buffer pressure plate 13, and the suspension rod 11 is fixedly connected to the upper end of the suspension connection frame 12.

[0037] A rubber sleeve 19 is fixedly arranged inside the steel sleeve 16 to play the role of limiting, stabilizing and reducing vibration.

[0038] The flexible pipe 3 is sleeved on the outside of the steel casing 16 to play the role of suspension and vibration reduction.

[0039] The second vibration isolation device 17 has the same structure as the first vibration isolation device 1 except that the cement base 10 is not provided at the bottom, and the second vibration isolation device 17 is laid and installed in the same manner as the first vibration isolation device 1 .

[0040] The thickness of the rubber gasket 8 is 1 cm, which fully plays a buffering role.

[0041] The distance between the two suspension vibration isolation devices 4 is 300 mm, which can fully suspend and reduce vibration of the flexible pipe 3.

[0042] In the micro-vibration air conditioner fan vibration reduction structure of the present invention, steel backings (7) are arranged on both sides of the steel frame steel bracket (5), and the design thereof not only provides vertical support for the fan (2), but also plays a role in limiting the left-right movement of the fan. The provision of the steel backings (7) ensures the stability of the fan during operation and prevents left-right deviation caused by vibration.

[0043] like Figure 3 As shown, the steel backing (7) is symmetrically arranged on both sides of the cement base (10), and the upper end of the steel backing (7) is pressed against the rubber gasket (8), the steel plate base (9) and the upper part of the side end of the cement base (10). This design enables the steel backing (7) to provide a stable support on the front and rear sides of the fan (2). At the same time, in order to limit the left and right movement of the fan, the other two sides should also be provided with steel backings. However, unlike the steel backings on the front and rear sides, the steel backings on the other two sides can be in a non-fully wrapped form within the side length of the foundation. It is only necessary to cover at least 5 cm of the side length of the foundation at the corner part to fully limit the vibration.

[0044] It is important that a gap filled with rubber pads should be designed between the steel backing (7) and the cement base (10) to avoid direct contact. Such a design allows the tiny vibrations generated by the fan during operation to be released through the rubber pads instead of being directly transmitted to the building structure, thereby further improving the vibration reduction effect.

[0045] Through this design, the steel backing (7) not only enhances the stability of the fan (2), but also helps to reduce the impact of vibration on the surrounding structure, thereby achieving more effective vibration isolation.

[0046] Figure 3 and Figure 1 The main difference is that the upper limit details of the backer are shown. Figure 3 In the figure, we can see that the upper end of the steel backing (7) is pressed against the upper side of the rubber gasket (8), the steel plate base (9) and the cement base (10). This design not only provides vertical support for the fan (2), but also plays a role in limiting the left and right movement of the fan. The setting of the steel backing (7) ensures the stability of the fan during operation and prevents left and right deviation caused by vibration.

[0047] also, Figure 3 The use of rubber filling between the steel backing (7) and the cement base (10) is described in detail. The presence of the rubber filling layer allows the tiny vibrations generated by the fan during operation to be released between the steel backing (7) and the cement base (10) instead of being directly transmitted to the building structure, thereby further improving the vibration reduction effect.

[0048] Figure 1 It provides a macroscopic perspective, showing a front stereoscopic view of the entire vibration reduction structure, including the relative positions and connection methods of the fan (2), the first vibration isolation device (1) and the flexible pipe (3), but does not show the upper limiting features of the steel backing (7) in detail.

[0049] By comparison Figure 1 and Figure 3 , we can more clearly understand the role of the steel backer (7) in the vibration reduction structure and how its upper limit design helps to improve the stability and vibration reduction effect of the entire system.

[0050] Working principle: The steel support 5 and the fan 2 can be stably fixed by setting the cement base 10, rubber gasket 8 and steel plate base 9, and the damping spring shock absorber 6 set at the bottom of the steel support 5 plays a role in buffering and vibration reduction. The foundation of the first vibration isolation device 1 is distributed from the floor slab to the top as a cement base 10C20 concrete strength or above, with a height of 15CM and a flatness of ≤1mm. The 8 with a thickness of more than 1cm requires corrosion resistance, aging resistance, and fire protection level B1 or above. The steel plate base 9 has a thickness of more than 1cm and a flatness of ≤2mm. The screw holes are drilled to facilitate the installation of the damping spring shock absorber 6 at the bottom. Before installation, the steel backer 7 is first isolated from the concrete foundation by the rubber gasket 8, and the rubber gasket 8 is arranged between the steel backer 7 and the side end of the cement base 10. A suspension frame containing a buffer vibration reduction spring 14 is installed 200mm near the soft connection on the flexible pipe 3. The second vibration isolation device 17 at the lower part of the bracket adopts the device vibration reduction method. The backer and rubber pad in the second vibration isolation device 17 are laid in the same way as in the first vibration isolation device 1, except that the concrete foundation is cancelled. The backer in the second vibration isolation device 17 is in the shape of 2, and the square basin-shaped rubber pad is convenient for fixing the steel pad in the middle. The square basin-shaped rubber pad is supported by 2 The Chinese-shaped backrest is fixed, and the backrest is connected to the bottom concrete floor. There is a gap of about 2mm between the steel pad and the backrest to prevent vibration from directly contacting the steel backrest through the steel pad, and then transmitted to the concrete floor by the steel backrest. The distance between the two suspended vibration isolation devices 4 is controlled at about 300mm. There is a rubber sleeve 19 where the flexible pipe 3 contacts the bracket. The thickness of the rubber sleeve 19 is about 1mm. The two sides of the vibration isolation frame exceed the column frame by about 1cm. The flexible pipe 3 can be stably suspended and vibration-reduced by the set steel casing 16, and the set second vibration isolation device 17 and buffer vibration-reducing spring 14 can fully buffer and reduce vibration.

[0051] A method for installing a micro-vibration air conditioner fan vibration reduction structure, comprising the following steps: S0: In order to ensure uniform force on the spring isolator (6) in the vibration reduction structure of the micro-vibration air conditioner fan, the present invention adopts a finite element calculation method to determine the optimal setting position of the fan (2) on the steel frame steel bracket (5). Due to the diversity of the internal structure of the fan, its center of gravity position may be different, resulting in different forces on the steel frame. Therefore, setting the fan at the center of the steel frame may not ensure uniform compression of the spring isolator.

[0052] Through finite element analysis, we can accurately simulate the stress of the fan during operation, so as to determine the optimal position of the fan on the steel frame. This position ensures that the compression deviation of the spring isolator is controlled within 1mm, thus ensuring the uniformity of the vibration reduction effect and the stability of the fan.

[0053] The steps of finite element calculation include: Create geometric models of wind turbines and steel frames.

[0054] Define material properties and boundary conditions.

[0055] Conduct structural and stress analysis and calculate the stress on the spring isolator and the compression of the spring when the fan is set at different positions.

[0056] Determine the fan position that will most evenly load the spring isolators.

[0057] In this way, we can ensure that the fan installation not only meets the vibration reduction requirements, but also improves the stability and service life of the entire system.

[0058] S1. Clean the site and pour the concrete foundation. Curing for 7 days to form strength, reaching C20 or above. Test the flatness of the concrete foundation. After the flatness meets ≤1mm, lay the rubber cushion layer to form the rubber gasket 8. Check the flatness of the rubber gasket 8. The combination of the rubber gasket 8 and the concrete is required to meet ≤2mm. S2. Lay the steel plate base 9 on the rubber gasket 8, check the position of the screw holes to ensure that the fan 2 can be fixed, and check that the flatness of the processed surface of the steel plate base 9 is controlled within 1mm. In this way, the overall flatness of the concrete plus rubber plus steel plate is controlled within 3mm; S3. Install rubber pads with similar shapes and matching models to the steel backing 7 around the concrete foundation to facilitate isolation from the steel backing 7. Install steel backing 7 on both sides of the concrete foundation. The steel backing 7 is close to the rubber gasket 8. Install the fan module on the steel plate base 9. The fan module is installed on the steel plate base 9 through the damping spring shock absorber 6. S4, make a steel casing 16 and connect it to the second vibration isolation device 17, the vibration-damping pad in the second vibration isolation device 17 is connected to the steel pad, the flatness of the steel pad is within 1mm, make a basin-shaped rubber pad, the size of the inner basin is just the size of the steel pad, and its flatness is within 1mm, the steel pad plus the bracket column is placed in the basin-shaped rubber base, check that the overall flatness of the bottom is within 2mm, 2-shaped steel backing is set on both sides of the basin-shaped rubber base, one side of the bottom of the steel backing is connected to the concrete floor through expansion bolts, the bottom of the steel casing 16 is bolted to the connecting support plates 18 on both sides, the rubber sleeve 19 is attached to the middle and side of the steel casing 16, and the wide side exceeds the width of the steel casing 16 by 1cm, and the buffer vibration-damping spring 14 is installed on the suspension connection frame 12 on the upper part of the steel casing 16; S5. Make another cross bar on the top by the above method to support the upper air duct. The air ducts are isolated from each other by a similar device suspended spring vibration reduction to prevent the vibrating pipes from transmitting vibration to the upper pipes or the floor below.

[0059] like Figure 6The fireproof basin-shaped rubber pad 20 shown is designed for use in the vibration reduction structure of the air conditioner fan to achieve effective vibration isolation between the fan and the building structure. This rubber pad has fireproof properties and is mainly used to ensure equipment safety and extend service life.

[0060] The fireproof basin-shaped rubber pad 20, with its basin-shaped design, helps to adapt to the specific installation environment while providing the necessary elasticity and durability. The edge of the rubber inner flip surface 22 of the fireproof basin-shaped rubber pad 20 is designed to flip inward, which is used to close the edge of the structure, ensure isolation from the external steel backing, and enhance the overall vibration isolation effect. During construction, first lay the fireproof basin-shaped rubber pad 20 in the predetermined area, and then accurately install the steel plate base and the fan structure on the rubber pad to ensure that the steel plate and the fan structure are located in the center of the rubber pad. Next, turn the edge of the rubber pad upward to form an inner flip edge surface, and use a 3 to 5 cm thick rubber material to close the inner flip edge surface to achieve isolation from the external steel backing. Finally, install the steel backing to ensure that it fits tightly with the outer edge of the rubber pad and is firmly fixed.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration reduction structure for a micro-vibration air conditioner fan, comprising a first vibration isolation device (1), an air duct connected to the fan (2) via a flexible pipe (3), and a suspension vibration isolation device (4) for suspending the air duct, characterized in that The fan (2) is arranged on the first vibration isolation device (1); the flexible connection pipe (3) is used to realize flexible connection between the air duct extending from the fan (2) and the air duct entering the house; the suspended vibration isolation device is arranged on the ground; the air duct is fixed by the suspended vibration isolation device (4) to prevent vibration between the air duct and the floor or other air ducts.

2. A micro-vibration air conditioner fan vibration reduction structure according to claim 1, characterized in that: The first vibration isolation device (1) comprises a steel support (5), a damping spring shock absorber (6), a steel backer (7), a rubber gasket (8), a steel plate base (9) and a cement base (10), wherein the rubber gasket (8) is arranged outside the cement base (10), the steel plate base (9) is fixedly connected to the upper end of the rubber gasket (8), the steel backer (7) is symmetrically arranged on both sides of the cement base (10), and the upper end of the steel backer (7) is pressed against the upper side ends of the rubber gasket (8), the steel plate base (9) and the cement base (10), the damping spring shock absorber (6) is fixedly connected to the steel plate base (9) by bolts, and the steel support (5) is fixedly connected to the upper end of the damping spring shock absorber (6).

3. A micro-vibration air conditioner fan vibration reduction structure according to claim 2, characterized in that: The fan (2) is arranged at the middle of the upper end of the steel support (5), and steel backings (7) are arranged on the other two sides of the cement base (10).

4. The micro-vibration air conditioner fan vibration reduction structure according to claim 3, characterized in that: The suspension vibration isolation device (4) comprises a suspension rod (11), a suspension connection frame (12), a connection buffer pressure plate (13), a buffer vibration reduction spring (14), a fixed connection rod (15), a steel casing (16), a second vibration isolation device (17) and a connection support plate (18), wherein the connection support plate (18) is symmetrically arranged at the upper end of the second vibration isolation device (17), the steel casing (16) is fixedly connected to the upper end of the connection support plate (18), and the fixed connection rod (15) is symmetrically fixedly connected to the steel casing. The upper end of the steel casing (16) is connected to the suspension connection frame (12), the suspension connection frame (12) is symmetrically arranged above the steel casing (16), the buffer damping spring (14) is fixedly installed inside the suspension connection frame (12), the connection buffer pressure plate (13) is fixedly connected to the upper end of the buffer damping spring (14), the fixed connection rod (15) passes through the suspension connection frame (12) and is fixedly connected to the middle part of the connection buffer pressure plate (13), and the suspension rod (11) is fixedly connected to the upper end of the suspension connection frame (12).

5. A micro-vibration air conditioner fan vibration reduction structure according to claim 4, characterized in that: A rubber sleeve (19) is fixedly arranged inside the steel sleeve (16).

6. A micro-vibration air conditioner fan vibration reduction structure according to claim 5, characterized in that: The second vibration isolation device (17) has the same structure as the first vibration isolation device (1) except that the cement base (10) is not provided at the bottom.

7. A micro-vibration air conditioner fan vibration reduction structure according to claim 6, characterized in that: The thickness of the rubber gasket (8) is 1 cm.

8. The micro-vibration air conditioner fan vibration reduction structure according to claim 7, characterized in that: The distance between the two suspended vibration isolation devices (4) is at least 300 mm.

9. A method for installing a micro-vibration air conditioner fan vibration reduction structure, using the micro-vibration air conditioner fan vibration reduction structure according to claim 9, characterized in that: It includes the following steps: S0: A finite element calculation method is used to determine the optimal setting position of the fan (2) on the steel frame steel support (5); S1. The site is cleaned and a concrete foundation is poured. The foundation is cured for 7 days to form a strength of C20 or above. The flatness of the concrete foundation is tested. If it meets the requirement of ≤1mm, a rubber cushion layer is laid to form a rubber gasket (8). The flatness of the rubber gasket (8) is checked. The combination of the rubber gasket (8) and the concrete is required to meet the requirement of an overall flatness of ≤2mm. S2. Lay the steel plate base (9) on the rubber gasket (8), check the position of the screw holes to ensure that the fan (2) can be fixed, check that the flatness of the processed surface of the steel plate base (9) is controlled within 1 mm, and the overall flatness of the concrete plus rubber plus steel plate is controlled within 3 mm; S3. Rubber pads of similar shape and matching model to the steel backing (7) are installed around the concrete foundation to facilitate isolation from the steel backing (7). Steel backings (7) are installed on both sides of the concrete foundation. The steel backings (7) are closely attached to the rubber pads (8). A fan module is installed on the steel plate base (9). The fan module is installed on the steel plate base (9) through a damping spring shock absorber (6); S4, prepare a steel casing (16) and connect it to the second vibration isolation device (17), connect the vibration-damping pad in the second vibration isolation device (17) to the steel pad, the flatness of the steel pad is within 1 mm, prepare a basin-shaped rubber pad, the size of the inner basin is exactly the size of the steel pad, and its flatness is within 1 mm, place the steel pad and the bracket column in the basin-shaped rubber base, check that the overall flatness of the bottom is within 2 mm, set two sides of the basin-shaped rubber base with a 2-shaped steel backer, and connect the bottom side of the steel backer to the concrete floor through expansion bolts, and install the spring (14) on the suspension connection frame (12) on the upper part of the steel casing (16); S5. Make another horizontal bar on the top to connect the air ducts above by the above method. The air ducts are isolated from each other by the suspension spring vibration reduction of the equipment to prevent the vibrating pipes from transmitting the vibration to the upper pipes or the lower floor; S6 After the above works are accepted, install the air ducts, reducers or flexible joints and other components and accessories connected to the equipment; The bottom of the steel casing (16) is bolted to the connecting support plates (18) on both sides. The rubber sleeve (19) is attached to the middle and side of the steel casing (16). The wide side exceeds the width of the steel casing (16) by 1 cm to buffer and reduce vibration. S7 vibration detection, including monitoring of equipment and pipeline bodies and floor vibration detection.

Images