Air conditioner air duct structure capable of reducing noise

Abstract

The invention relates to an air conditioner air duct structure capable of reducing noise. The air conditioner air duct structure comprises a plurality of outer air ducts arranged in series; the two fixing plates are arranged on the outer side of the side wall of each outer air duct through expansion bolts; the two limiting plates abut against the side wall of the outer air duct, the two limiting plates are located at the two ends of the fixing plate respectively, the fixing rod is horizontally arranged on the fixing plate in a sliding mode, and the limiting plates are fixed to the ends of the fixing rod; the fixing rod is sleeved with the spring, and the two ends of the spring abut against the limiting plate and the fixing plate correspondingly; the clamping ring is arranged at the other end of the fixing rod; the expansion bolt is also used for hoisting, the bottom of the expansion bolt is connected with a fixing plate, a movable fixing rod is arranged on the fixing plate in a penetrating mode, the end of the fixing rod is connected with a limiting plate, and a spring is arranged between the limiting plate and the fixing plate, so that the limiting plate elastically abuts against the side wall of the outer air duct, and a buffering mechanism is formed. Compared with a traditional rigid connection mode between an expansion bolt and the outer air duct, the connecting mode of the scheme is not prone to shaking, and then noise is generated.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to an air duct structure of an air conditioner capable of reducing noise. Background Art

[0002] Central air conditioning consists of air handling equipment (such as combined air conditioning units, fan coils), heat and humidity treatment equipment (i.e., cold and heat sources or air conditioning hosts), air supply and return air ducts and various terminal air outlet units (i.e., fan coils or indoor units, etc.). Stainless steel air ducts need to be installed between the air conditioner and the air outlet to transport cold and warm air.

[0003] The existing stainless steel air duct adopts a single-layer structure. During the transmission of cold air or warm air, the stainless steel air duct is easily affected by the internal airflow and the temperature difference between the inside and the outside to produce local deformation, which in turn causes noise. In addition, the stainless steel air duct is hoisted and fixed with expansion bolts and lacks limiting support. It is easy to shake when subjected to external force, causing noise.

[0004] In summary, how to prevent the air duct from generating noise due to shaking has become an urgent problem that researchers in this field need to solve. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to prevent the air duct of the air conditioner from generating noise due to shaking;

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The present invention discloses an air duct structure of an air conditioner capable of reducing noise, comprising: a plurality of external air ducts arranged in series; two fixing plates, which are arranged on the outer side of each of the side walls of the external air ducts through expansion bolts; two limit plates abutting against the side walls of the external air ducts, the two limit plates being respectively located at the two ends of the fixing plates; a fixing rod, which is horizontally slidably arranged on the fixing plates, and the limit plates are fixed at its ends; a spring, which is sleeved on the fixing rod, and the two ends of which are respectively abutted against the limit plates and the fixing plates; a snap ring, which is arranged at the other end of the fixing rod;

[0008] In the present solution, the expansion bolt is also used for lifting. A fixing plate is connected to the bottom of the expansion bolt. A movable fixing rod is passed through the fixing plate. The end of the fixing rod is connected to a limiting plate. A spring is arranged between the limiting plate and the fixing plate. In this way, the limiting plate and the side wall of the external air duct are elastically contacted to form a buffer mechanism. Compared with the rigid connection between the traditional expansion bolt and the external air duct, the connection method of the present solution is not easy to shake and generate noise.

[0009] In order to adjust the lifting position of the fixing plate, the present invention provides a fixing sleeve at the bottom of the expansion bolt, and the fixing sleeve can move up and down along the expansion bolt.

[0010] In order to adjust the position of the fixing plate close to or away from the external air duct, the present invention adopts a guide rod and a screw rod that pass through the fixing plate on the outer peripheral wall of the fixing sleeve; a third nut and a second nut are arranged on the screw rod and abut against the front and rear end surfaces of the fixing plate.

[0011] The fixing sleeve, the screw rod, the third nut and the second nut form an adjusting mechanism to realize the two-axis adjustment of the lifting and horizontal movement of the fixing plate.

[0012] In order to further ensure the spacing between the two fixing plates and avoid the shaking of a single expansion bolt during hoisting, the present invention also includes: a support plate, which is located at the bottom of the outer air duct and connects the two fixing sleeves.

[0013] In order to reduce heat loss and avoid a large temperature difference between the inside and outside of the air duct structure during operation of the air conditioner, the outer wall of the outer air duct is provided with a heat preservation layer in the present invention.

[0014] In order to avoid noise caused by deformation due to temperature difference between the inner air duct and the outer air duct, the present invention adopts an inner air duct arranged in the outer air duct; and a first sound absorbing layer is arranged between the inner air duct and the outer air duct.

[0015] In order to illustrate how the two outer air ducts are connected in series, the present invention adopts that a first sealing gasket is provided at the end of the inner air duct; a pressure plate for limiting the end of the first sealing gasket is provided at the end of the outer air duct; a bolt connects the two pressure plates at the ends of the two adjacent outer air ducts;

[0016] The two external air ducts are connected by means of a pressure plate and bolts. The first sealing gasket ensures the sealing of the connection between the two external air ducts, and the pressure plate also serves to limit the end of the first sealing gasket.

[0017] In order to avoid air leakage between the pressure plates, the present invention adopts a limiting boss protruding from the outer peripheral wall of the pressure plate, and a second sealing gasket is provided on the inner side of the limiting boss and between the two pressure plates, and the bolt passes through the second sealing gasket.

[0018] In order to avoid the noise generated by the airflow flowing between the pressure plates, the second sound-absorbing layer is provided on the inner side of the second sealing pad and between the two pressure plates to absorb the noise and prevent the noise from spreading outward.

[0019] In order to explain the specific structure of the first sealing gasket, the present invention adopts a ring groove provided on the first sealing gasket for inserting the end of the inner air duct; the inner side surface of the first sealing gasket has a rounded corner;

[0020] The rounded corners can reduce the interference of the first sealing gasket on the airflow, so that the airflow is less likely to generate noise when it contacts the first sealing gasket during the flow.

[0021] Beneficial effects of the present invention:

[0022] The present invention arranges stainless steel inner and outer double-layer air ducts on the air-conditioning duct structure. The stainless steel inner air duct can be pressed and fixed on the inner side of the stainless steel outer air duct through the cooperation of the first sealing gasket and the pressure plate. Further, when the stainless steel inner air duct is locally deformed due to the influence of the internal airflow and the temperature difference between the inside and the outside, the first sealing gasket can be used for buffering to avoid noise. Moreover, by arranging a first sound-absorbing layer between the stainless steel outer air duct and the stainless steel inner air duct and installing a second sound-absorbing layer on the outside of the pressure plate, the noise generated during the airflow and the noise generated during the deformation of the stainless steel inner air duct can be absorbed to avoid the noise from spreading to the outside.

[0023] In terms of buffer structure design, the present invention adopts the cooperation of a first fixed rod, a second fixed rod and a limit plate. The elastic force generated by the spring enables the limit plate to provide limited support to the outer side of the stainless steel external air duct while increasing the bearing area of ​​the expansion bolt acting on the stainless steel external air duct, so that the air conditioning duct structure is not prone to shaking and noise when subjected to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a cross-sectional view of the structure of the present invention;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the structure at center A;

[0028] Figure 4 It is a partial schematic diagram of the structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the assembly of the inner and outer air ducts of the structure of the present invention.

[0030] In the figure: 1. expansion bolt; 2. first nut; 3. support plate; 4. stainless steel outer air duct; 5. bolt; 6. insulation layer; 7. fixing sleeve; 8. guide rod; 9. fixing plate; 10. buffer mechanism; 101. first fixing rod; 102. second fixing rod; 103. limit plate; 104. spring; 105. snap ring; 11. adjustment mechanism; 111. screw rod; 112. second nut; 113. third nut; 12. stainless steel inner air duct; 13. first sealing gasket; 14. pressure plate; 15. first sound absorbing layer; 16. second sealing gasket; 17. second sound absorbing layer; 18. limit boss; 19. fillet; 20. fourth nut. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] The present invention provides a technical solution, a noise-reducing air duct structure for air conditioning, comprising: Figure 1 , Figure 2 , the expansion bolts 1 inside the roof are fixedly installed, and the support plate 3 and the stainless steel outer air duct 4 above the support plate 3 are fixedly connected by bolts 5. The outer side of the stainless steel outer air duct 4 is coated with an insulation layer 6. The insulation layer 6 can be used to insulate the stainless steel outer air duct 4, reduce heat loss, and avoid a large temperature difference between the inside and outside of the air conditioning duct structure. The outer side of the expansion bolt 1 is movably sleeved with a fixing sleeve 7 located above the first nut 2, and a guide rod 8 is arranged on the outer side of the fixing sleeve 7. The outer side of the guide rod 8 is movably sleeved with a fixing plate 9. The inner side of the fixing plate 9 is movably sleeved with a buffer mechanism 10 located on the outer side of the stainless steel outer air duct 4 and symmetrically distributed, and the inner part of the middle part of the fixing plate 9 is sleeved with an adjusting mechanism 11 arranged on the outer side of the fixing sleeve 7. The inner side of the stainless steel outer air duct 4 is sleeved with a stainless steel inner air duct 12. The openings on both sides of the stainless steel inner air duct 12 The openings are all provided with a first sealing gasket 13 which is mounted on the inner side of the stainless steel outer air duct 4, and the openings on both sides of the stainless steel outer air duct 4 are fixedly connected with a pressure plate 14 which is located on the outer side of the first sealing gasket 13. The first sealing gasket 13 can be limited by the pressure plate 14, and the stainless steel inner air duct 12 can be pressed and fixed on the inner side of the stainless steel outer air duct 4 by the first sealing gasket 13, so that the air-conditioning duct structure can form a double-layer air duct, and the stainless steel outer air duct 4 and the stainless steel inner air duct 12 are locally deformed by the temperature difference between the inside and the outside, while they do not affect each other, thereby avoiding the generation of noise, and the outer side of the stainless steel inner air duct 12 is provided with a first sound-absorbing layer 15 which is mounted on the inner side of the stainless steel outer air duct 4, and the outer side of the bolt 5 is provided with a second sealing gasket 16 which is located on the outer side of the pressure plate 14, and the second sealing gasket 16 can be pressed while tightening the bolt 5, so that the gap between the stainless steel outer air duct 4 can be sealed to avoid air leakage.

[0033] See also Figure 3 The inner side of the second sealing pad 16 is provided with a second sound absorbing layer 17 located outside the pressing plate 14. The second sound absorbing layer 17 can absorb the noise generated when the airflow flows between the pressing plates 14, thereby preventing the noise from spreading outward.

[0034] The outer side of the pressing plate 14 is provided with a limiting boss 18 located on the inner side of the second sound absorbing layer 17 and the outer side of the second sealing gasket 16. The limiting boss 18 can limit the second sound absorbing layer 17 and the second sealing gasket 16, so that after the bolt 5 is tightened, the second sound absorbing layer 17 will not deviate inwardly and the second sealing gasket 16 will not deviate outwardly, thereby ensuring that the second sound absorbing layer 17 will not interfere with the flow of airflow;

[0035] The inner side surface of the first sealing gasket 13 is provided with a rounded corner 19 , which can reduce the interference of the first sealing gasket 13 on the airflow, so that the airflow is not easy to generate noise when it contacts the first sealing gasket 13 during the flow.

[0036] See also Figure 4 The buffer mechanism 10 includes a first fixing rod 101 and a second fixing rod 102 movably sleeved inside the fixing plate 9, and a limiting plate 103 is arranged on the outer side of one end of the first fixing rod 101 and the second fixing rod 102 extending outside the fixing plate 9, and the outer sides of the first fixing rod 101 and the second fixing rod 102 are both provided with a spring 104 located between the fixing plate 9 and the limiting plate 103, and the outer sides of the first fixing rod 101 and the second fixing rod 102 extending outside the fixing plate 9 are clamped with a clamping ring 105, and the first fixing rod 101 and the second fixing rod 102 can be limited by the clamping ring 105, and the limiting plate 103 can be disassembled and assembled while limiting the first fixing rod 101 and the second fixing rod 102, and the elastic force of the spring 104 acting on the limiting plate 103 enables the limiting plate 103 to limit and support the stainless steel outer air duct 4;

[0037] The adjusting mechanism 11 includes a screw rod 111 which is arranged on the outside of the fixing sleeve 7 and is sleeved on the middle part of the fixing plate 9. The outer thread of one end of the screw rod 111 is sleeved with a second nut 112 located on the inner side of the fixing plate 9, and the outer thread of the other end of the screw rod 111 extending out of the outside of the fixing plate 9 is sleeved with a third nut 113. By rotating the second nut 112 and the third nut 113, the fixing plate 9 can be driven to move along the axial direction of the guide rod 8, thereby adjusting the initial distance between the fixing plate 9 and the stainless steel external air duct 4 and adjusting the elastic force of the spring 104 acting on the limit plate 103.

[0038] See also Figure 4 The outer thread sleeve of the expansion bolt 1 is provided with a fourth nut 20 located above and below the fixing sleeve 7. By rotating the fourth nut 20, the height of the fixing sleeve 7 can be adjusted, thereby ensuring that the fixing plate 9 can synchronously adjust the position of the limit plate 103 according to the installation position of the stainless steel external air duct 4, ensuring that the limit plate 103 can fully contact the stainless steel external air duct 4.

[0039] This solution: When assembling the air-conditioning duct structure, after the first sound-absorbing layer 15 is sleeved on the outer side of the stainless steel inner air duct 12, the stainless steel inner air duct 12 and the first sound-absorbing layer 15 are sleeved on the inner side of the stainless steel outer air duct 4, the first sealing gasket 13 is clamped on the outer side of the stainless steel inner air duct 12 and sleeved on the inner side of the stainless steel outer air duct 4, the bolt holes on the pressure plate 14 are aligned with the bolt holes on the stainless steel outer air duct 4, and then the pressure plate 14 is welded to both sides of the stainless steel outer air duct 4 using spot welding equipment, the thermal insulation layer 6 is wrapped on the outer side of the stainless steel outer air duct 4, and the stainless steel outer air duct 4 is placed on top of the support plate 3, and then the second sealing gasket 16 and the second sound-absorbing layer 17 are sleeved on the inner side of the limiting boss 18, the stainless steel outer air duct 4 is fixed by the bolt 5, and after the fixing plate 9 is sleeved on the outer side of the guide rod 8 and the screw rod 111, the fixing plate 9 is fixed by the third nut 113 to complete the assembly of the single-group air-conditioning duct structure.

[0040] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air duct structure for air conditioning capable of reducing noise, characterized in that: include: Multiple external air ducts arranged in series; Two fixing plates, which are arranged on the outside of each of the side walls of the outer air duct by expansion bolts; Two limit plates abutting against the side wall of the outer air duct, the two limit plates are respectively located at the two ends of the fixed plate A fixing rod, which is horizontally slidably arranged on the fixing plate, and the limiting plate is fixed to the end of the fixing rod; A spring, which is sleeved on the fixing rod, and whose two ends are respectively against the limiting plate and the fixing plate; A snap ring is arranged at the other end of the fixing rod.

2. The air duct structure of an air conditioner capable of reducing noise according to claim 1, characterized in that: A fixing sleeve is arranged at the bottom of the expansion bolt, and the fixing sleeve can move up and down along the expansion bolt.

3. The air duct structure of an air conditioner capable of reducing noise according to claim 2, characterized in that: The outer peripheral wall of the fixing sleeve is provided with a guide rod and a screw rod passing through the fixing plate; A third nut and a second nut are arranged on the screw rod and abut against the front and rear end surfaces of the fixing plate.

4. The air duct structure of an air conditioner capable of reducing noise according to claim 3, characterized in that: Also includes: The support plate is located at the bottom of the outer air duct and is connected to the two fixing sleeves.

5. The air duct structure of an air conditioner capable of reducing noise according to claim 4, characterized in that: The outer wall of the outer air duct is provided with a heat-insulating layer.

6. The air duct structure of an air conditioner capable of reducing noise according to claim 5, characterized in that: An inner air duct is arranged inside the outer air duct; and a first sound absorbing layer is arranged between the inner air duct and the outer air duct.

7. The air duct structure of an air conditioner capable of reducing noise according to claim 6, characterized in that: A first sealing gasket is provided at the end of the inner air duct; The end of the outer air duct is provided with a pressing plate for limiting the end of the first sealing gasket; Bolts connect the two pressure plates at the ends of two adjacent outer air ducts.

8. The air duct structure of an air conditioner capable of reducing noise according to claim 7, characterized in that: A limiting boss is protruding from the outer peripheral wall of the pressure plate, a second sealing gasket is arranged inside the limiting boss and between the two pressure plates, and the bolt passes through the second sealing gasket.

9. The air duct structure of an air conditioner capable of reducing noise according to claim 8, characterized in that: A second sound absorbing layer is arranged on the inner side of the second sealing pad and between the two pressing plates.

10. The air duct structure of an air conditioner capable of reducing noise according to claim 8, characterized in that: The first sealing gasket is provided with an annular groove for inserting the end of the inner air duct; The inner side surface of the first sealing gasket has a rounded corner.

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