Air duct noise reduction device of heating ventilation air conditioner

Abstract

The utility model relates to the technical field of heating ventilation air conditioners, in particular to an air duct noise reduction device of a heating ventilation air conditioner, which realizes the disassembly and replacement operation of a mounting pipe and sound-absorbing cotton through the matching of a noise reduction mechanism and two limiting components, and is higher in practicability. A ventilation pipe is installed on the heating ventilation air conditioner in a communicating mode, a working cavity is formed in the ventilation pipe, a dismounting pipe is installed on the working cavity in a sliding mode, the dismounting pipe conducts moving operation through a moving mechanism, a noise reduction mechanism is arranged on the dismounting pipe and comprises an installation pipe, and sound absorption cotton is arranged in the installation pipe. Two mounting plates and two first fixing plates are symmetrically and fixedly mounted on the dismounting pipe, two sliding grooves are symmetrically formed in the dismounting pipe, L-shaped plates are slidably mounted in the two sliding grooves correspondingly, inserting rods are fixedly mounted on the two L-shaped plates correspondingly, the two inserting rods are slidably connected with the two first fixing plates correspondingly, and two springs are symmetrically and fixedly mounted on the two L-shaped plates correspondingly.

Description

Technical Field

[0001] This utility model relates to the technical field of heating, ventilation and air conditioning, specifically to a noise reduction device for air ducts in heating, ventilation and air conditioning systems. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) are air conditioning units that provide heating, ventilation, and air conditioning functions. Since the main functions of HVAC include heating, ventilation, and air conditioning, the term "HVAC" is a combined abbreviation of these three functions.

[0003] During the use of HVAC ducts, the noise generated by the outdoor unit of the HVAC system will be transmitted to the indoor environment through the ducts, thereby increasing the noise in the user's room and affecting the user experience.

[0004] To avoid noise pollution, noise reduction devices are used to reduce noise; however, existing noise reduction devices are not convenient for disassembling and replacing sound insulation cotton, and are not very practical. Therefore, noise reduction devices for HVAC ducts are needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, this utility model provides a noise reduction device for HVAC ducts that enables the disassembly and replacement of the installation pipe and sound-absorbing cotton through the cooperation of a noise reduction mechanism and two limiting components. This device is highly practical.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction device for HVAC ducts, including an HVAC unit, wherein a ventilation duct is connected and installed on the HVAC unit, a working chamber is opened on the ventilation duct, and a disassembly pipe is slidably installed on the working chamber;

[0009] The disassembly tube is moved using a moving mechanism;

[0010] The disassembly tube is equipped with a noise reduction mechanism, which includes an installation tube. The installation tube is filled with sound-absorbing cotton. Two installation plates and two first fixing plates are symmetrically fixed on the disassembly tube. Two sliding grooves are symmetrically opened on the disassembly tube. An L-shaped plate is slidably installed in each of the two sliding grooves. A rod is fixedly installed on each of the two L-shaped plates. The two rods are slidably connected to the two first fixing plates respectively. Two springs are symmetrically fixed on each of the two L-shaped plates. The two springs on the same side are fixedly connected to the corresponding first fixing plates respectively. The installation tube and the installation plate on the same side are connected through a through hole. The L-shaped plate on the same side is slidably connected to the through hole on the same side.

[0011] Limiting components are provided on both first fixed plates for limiting the movement of the two L-shaped plates.

[0012] Preferably, one of the limiting components includes a limiting plate, which is rotatably connected to a first fixed plate. A first limiting block and a second limiting block are fixedly installed on the limiting plate. A slot is provided on the L-shaped plate, and the first limiting block is engaged with the slot.

[0013] Furthermore, the moving mechanism includes a second fixed plate, which is fixedly installed on the HVAC system. A first connecting plate is fixedly installed on the disassembly pipe, and a second connecting plate is fixedly installed on the first connecting plate. Two electric push rods are symmetrically fixedly installed on the second connecting plate, and the other ends of the two electric push rods are fixedly connected to the second fixed plate.

[0014] Furthermore, a slider is fixedly installed on the second connecting plate, and a moving groove is provided on the HVAC system. A limit rod is fixedly installed on the moving groove, and the slider is slidably connected to the moving groove and the limit rod.

[0015] Based on the aforementioned scheme, auxiliary blocks are fixedly installed on both L-shaped plates.

[0016] Furthermore, a sealing gasket is provided at the interface between the ventilation pipe and the disassembly pipe.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a noise reduction device for HVAC ducts, which has the following beneficial effects:

[0019] The installation tube with sound-absorbing cotton is placed on the disassembly tube. By releasing the two limiting components that limit the two L-shaped plates, the two L-shaped plates are clamped to the two installation tubes. The two installation tubes are then limited. The two L-shaped plates are clamped and limited again by the two limiting components. The disassembly tube is then moved to fit with the ventilation tube by the moving mechanism, thus realizing the installation of the installation tube and sound-absorbing cotton. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the present invention.

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the L-shaped plate and spring of this utility model.

[0024] The following are labels in the attached diagram: 1. HVAC; 2. Ventilation duct; 3. Disassembly duct; 4. Installation duct; 5. Sound-absorbing cotton; 6. Mounting plate; 7. First fixing plate; 8. L-shaped plate; 9. Insert rod; 10. Limiting plate; 11. First limiting block; 12. Second limiting block; 13. Spring; 14. First connecting plate; 15. Second connecting plate; 16. Second fixing plate; 17. Electric push rod; 18. Slider; 19. Limiting rod; 20. Auxiliary block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figure 1 and Figure 2 The noise reduction device for HVAC ducts includes an HVAC unit 1, a ventilation duct 2 connected to the HVAC unit 1, a working chamber on the ventilation duct 2, and a disassembly pipe 3 slidably installed on the working chamber.

[0028] Please see Figure 1 and Figure 2 The disassembly pipe 3 is moved via a moving mechanism, which includes a second fixed plate 16, which is fixedly installed on the HVAC 1. A first connecting plate 14 is fixedly installed on the disassembly pipe 3, and a second connecting plate 15 is fixedly installed on the first connecting plate 14. Two electric push rods 17 are symmetrically fixedly installed on the second connecting plate 15, and the other ends of the two electric push rods 17 are fixedly connected to the second fixed plate 16. By activating the two electric push rods 17, the two electric push rods 17 drive the second connecting plate 15 to move, thereby driving the disassembly pipe 3 to move, so that the disassembly pipe 3 is detached from the ventilation pipe 2, thereby allowing the installation pipe 4 and the sound-absorbing cotton 5 to be replaced.

[0029] Please see Figure 1-4The disassembly tube 3 is equipped with a noise reduction mechanism, which includes an installation tube 4. The installation tube 4 is filled with sound-absorbing cotton 5. Two installation plates 6 and two first fixing plates 7 are symmetrically fixed on the disassembly tube 3. Two sliding grooves are symmetrically opened on the disassembly tube 3. L-shaped plates 8 are slidably installed in both sliding grooves. Insert rods 9 are fixedly installed on both L-shaped plates 8. The two insert rods 9 are slidably connected to the two first fixing plates 7 respectively. Two springs 13 are symmetrically fixed on both L-shaped plates 8. The two springs 13 on the same side are fixedly connected to the corresponding first fixing plates 7 respectively. The installation tube 4 and the installation plate 6 on the same side are connected through a through hole. The L-shaped plates 8 on the same side are slidably connected to the through hole on the same side.

[0030] Please see Figure 1-4 Both first fixed plates 7 are equipped with limiting components for limiting the two L-shaped plates 8. The installation tube 4 with sound-absorbing cotton 5 is placed on the disassembly tube 3. By releasing the limiting components from limiting the two L-shaped plates 8, the two L-shaped plates 8 are clamped to the two installation tubes 4, and the two installation tubes 4 are limited. The two limiting components are used again to clamp and limit the two L-shaped plates 8. The disassembly tube 3 is moved to fit with the ventilation tube 2 by the moving mechanism, thereby realizing the installation of the installation tube 4 and the sound-absorbing cotton 5.

[0031] Please see Figure 1-4 One of the limiting components includes a limiting plate 10, which is rotatably connected to the first fixed plate 7. A first limiting block 11 and a second limiting block 12 are fixedly installed on the limiting plate 10. A slot is provided on the L-shaped plate 8, and the first limiting block 11 is engaged with the slot. When one end of the L-shaped plate 8 is inside the mounting tube 4, the first limiting block 11 is engaged with the slot on the L-shaped plate 8, thereby limiting the L-shaped plate 8 and preventing it from detaching from the mounting tube 4. When it is necessary to disassemble the mounting tube 4, the L-shaped plate 8 is slid to detach it from the mounting tube 4, and the second limiting block 12 is attached to the L-shaped plate 8 to limit it.

[0032] Please see Figure 1 and Figure 2 It should also be noted that a slider 18 is fixedly installed on the second connecting plate 15, and a moving groove is provided on the HVAC 1. A limit rod 19 is fixedly installed on the moving groove. The slider 18 is slidably connected to the moving groove and the limit rod 19. The movement of the second connecting plate 15 drives the slider 18 to slide on the limit rod 19, thereby making the second connecting plate 15 more stable.

[0033] Please see Figure 3 and Figure 4 Auxiliary blocks 20 are fixedly installed on both L-shaped plates 8. The setting of the two auxiliary blocks 20 facilitates the movement of the two L-shaped plates 8.

[0034] Please see Figure 1 and Figure 2 A sealing gasket is provided at the interface between ventilation pipe 2 and disassembly pipe 3, which makes the connection between ventilation pipe 2 and disassembly pipe 3 tighter.

[0035] In summary, when this HVAC duct noise reduction device is in use, the installation pipe 4 with sound-absorbing cotton 5 is placed on the disassembly pipe 3. By releasing the two second limiting blocks 12 from limiting the two L-shaped plates 8, the two L-shaped plates 8 are clamped onto the installation pipe 4, thus limiting the installation pipe 4. Then, the two first limiting blocks 11 clamp the two L-shaped plates 8 again. By activating the two electric push rods 17, the two electric push rods 17 drive the second connecting plate 15 to move, thereby moving the disassembly pipe 3 to move, so that the disassembly pipe 3 fits into the ventilation pipe 2, thus completing the installation noise reduction. When it is necessary to replace the installation tube 4 and sound-absorbing cotton 5, activate the two electric push rods 17. The two electric push rods 17 will drive the disassembly tube 3 to detach from the ventilation tube 2. Rotate the two limiting plates 10 to release the clamping operation between the two first limiting blocks 11 and the two L-shaped plates 8. Slide the two L-shaped plates 8 through the two auxiliary blocks 20 to detach the two L-shaped plates 8 from the two installation tubes 4. This will cause the multiple limiting plates 10 to be compressed, so that the two second limiting blocks 12 are in contact with the two L-shaped plates 8, thereby limiting the two L-shaped plates 8. Then, remove the installation tube 4 for replacement.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A duct noise reduction device for heating, ventilation and air conditioning, comprising a heating, ventilation and air conditioning (1), characterized in that: The air conditioner (1) is provided with a ventilation pipe (2) connected and installed thereon, the ventilation pipe (2) is provided with a working cavity, and the working cavity is slidably provided with a dismounting pipe (3); The dismounting pipe (3) is moved by a moving mechanism; The dismounting pipe (3) is provided with a noise reduction mechanism, the noise reduction mechanism comprises a mounting pipe (4), the mounting pipe (4) is provided with sound-absorbing cotton (5) therein, two mounting plates (6) and two first fixing plates (7) are symmetrically and fixedly installed on the dismounting pipe (3), two sliding grooves are symmetrically formed on the dismounting pipe (3), two L-shaped plates (8) are slidably installed in the sliding grooves, two plug rods (9) are fixedly installed on the two L-shaped plates (8), the two plug rods (9) are slidably connected with the two first fixing plates (7) respectively, two springs (13) are symmetrically and fixedly installed on the two L-shaped plates (8), the two springs (13) on the same side are fixedly connected with the corresponding first fixing plate (7) respectively, the mounting pipe (4) and the mounting plate (6) on the same side are communicated through a through hole, and the L-shaped plate (8) on the same side is slidably connected with the through hole on the same side. Each of the two first fixing plates (7) is provided with a limiting assembly for limiting the two L-shaped plates (8).

2. The HVAC duct noise reduction device of claim 1, wherein: One of the limiting assemblies comprises a limiting plate (10), the limiting plate (10) is rotatably connected with the first fixing plate (7), the limiting plate (10) is fixedly provided with a first limiting block (11) and a second limiting block (12), the L-shaped plate (8) is provided with a clamping groove, and the first limiting block (11) is clamped in the clamping groove.

3. The HVAC duct noise reduction device of claim 2, wherein: The moving mechanism comprises a second fixing plate (16), the second fixing plate (16) is fixedly installed on the air conditioner (1), a first connecting plate (14) is fixedly installed on the dismounting pipe (3), a second connecting plate (15) is fixedly installed on the first connecting plate (14), two electric push rods (17) are symmetrically and fixedly installed on the second connecting plate (15), and the other ends of the two electric push rods (17) are fixedly connected with the second fixing plate (16).

4. The duct noise reduction device for heating, ventilation, air conditioning and refrigeration according to claim 3, characterized in that: The second connecting plate (15) is fixedly provided with a sliding block (18), the air conditioner (1) is provided with a moving groove, the moving groove is fixedly provided with a limiting rod (19), and the sliding block (18) is slidably connected with the moving groove and the limiting rod (19).

5. The HVAC duct noise reduction device of claim 4, wherein: The two L-shaped plates (8) are fixedly provided with auxiliary blocks (20).

6. The HVAC duct noise reduction device of claim 5, wherein: The ventilation pipe (2) and the dismounting pipe (3) are provided with sealing pads at the interfaces.

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