Noise-reduction ventilation device for heating ventilation air conditioner

Abstract

The utility model discloses a noise reduction ventilation device for a heating ventilation air conditioner, and relates to the technical field of heating ventilation air conditioner exhaust, the noise reduction ventilation device comprises a mounting square pipe, extension blocks are fixedly arranged at the tail end of the mounting square pipe in a rectangular array mode, one ends of the extension blocks are fixedly arranged on the side face of the same filter screen, and a corrugated plate is fixedly arranged on the inner side face of the filter screen. And a reverse blowing assembly for reversely blowing impurities on one side of the filter screen is arranged in an inner cavity of the mounting square pipe. The blowback assembly is arranged in the inner cavity of the mounting square pipe, when attachments on the outer side of the filter screen need to be cleaned, the blowback assembly can move to the inner side of the filter screen, the attachments on the outer side of the filter screen can be automatically blown away, and the problem that the filter screen cannot be cleaned when the ventilation device for the heating ventilation air conditioner is used can be effectively solved. The problems that in the prior art, attachments on the outer side of a filter screen usually need to be manually and regularly cleaned, the process is tedious, if cleaning is not timely enough, the attachments easily block a ventilation device, and the smoothness of air in the heating ventilation air conditioner is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC exhaust, in particular to a noise-reducing ventilation device for HVAC. Background Art

[0002] Ventilation is an integral part of a building. Its full name in subject classification is heating, gas supply, ventilation and air-conditioning engineering, which includes three aspects: heating, ventilation and air conditioning. Functionally speaking, it is also an indispensable part of future families. Air is supplied to the HVAC system through air supply devices.

[0003] In the prior art, when the ventilation device for HVAC is in use, it is usually necessary to manually clean the attachments on the outside of the filter regularly. Due to the large diameter of the filter, the process of workers using ordinary tools to clean the filter is relatively cumbersome, time-consuming and the cleaning effect is not obvious. Summary of the invention

[0004] The purpose of the utility model is to solve the problem that in the prior art, when a ventilation device for HVAC is in use, it is usually necessary to manually clean the attachments on the outside of the filter screen regularly. Due to the large diameter of the filter screen, the process of workers using ordinary tools to clean the filter screen is relatively cumbersome, time-consuming and the cleaning effect is not obvious. A noise-reducing ventilation device for HVAC is proposed to solve the problem that

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A noise-reducing ventilation device for HVAC comprises a mounting square tube, a one-way valve is fixedly provided on the side of the mounting square tube, a top-connected square tube is fixedly provided at the top edge of the mounting square tube, an exhaust fan is fixedly provided on the top of the top-connected square tube by bolts, an extension block is fixedly provided in a rectangular array at the end of the mounting square tube, one end of multiple groups of the extension blocks are fixedly provided on the same side of a filter, a corrugated plate is fixedly provided on the inner side of the filter, and a back-blowing component for back-blowing dirt on one side of the filter is provided in the inner cavity of the mounting square tube.

[0007] Optionally, the backflush assembly includes a threaded sleeve, a threaded rod, and a backflush box, one end of the threaded rod is fixedly connected to the output end of the drive motor, and the drive motor is fixedly connected to the side of the mounting square tube.

[0008] Optionally, the other end of the threaded rod is threaded into a threaded sleeve, a threaded cavity is arranged inside the threaded sleeve, and a back-blowing box is fixedly arranged at the end of the threaded sleeve.

[0009] Optionally, a left stopper is fixedly provided on one side of the inner cavity of the installation square tube, and a right stopper is fixedly provided on the other side of the installation square tube on the backblowing box.

[0010] Optionally, a one-way valve is fixedly connected to a side of the installation square tube close to the filter screen, and a docking hole is opened in the middle of the side of the back-blowing box.

[0011] Optionally, the back-blow box is configured to be in a hollow state, and release pipes are equidistantly arranged on the sides of the back-blow box.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model is provided with a back-blowing assembly in the inner cavity of the installation square tube. When the attachments on the outside of the filter need to be cleaned, the back-blowing assembly can be moved to the inside of the filter to automatically blow away the attachments on the outside of the filter. This can effectively solve the problem that when the ventilation device for HVAC is in use, it is usually necessary to manually clean the attachments on the outside of the filter on a regular basis. Due to the large diameter of the filter, the process of workers using ordinary tools to clean the filter is relatively cumbersome, time-consuming and the cleaning effect is not obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the half-section structure.

[0016] Figure 3 for Figure 2 Another perspective structural diagram of .

[0017] In the figure: 1. one-way valve; 2. installation square tube; 21. corrugated plate; 3. left block; 4. right block; 5. exhaust fan; 6. top-connected square tube; 7. threaded sleeve; 8. threaded rod; 9. drive motor; 10. backflush box; 11. docking hole; 12. release pipe; 13. filter screen; 14. extension block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] Reference Figure 1-3 A noise-reducing ventilation device for HVAC includes an installation square tube 2, a one-way valve 1 is fixedly arranged on the side of the installation square tube 2, and the one-way flow direction of gas of the one-way valve 1 is from the outside air of the installation square tube 2 to the inner cavity of the installation square tube 2, and the one-way valve 1 can be connected to an external air source.

[0021] A top-connected square tube 6 is fixedly arranged at the top edge of the installing square tube 2, and an exhaust fan 5 is fixedly arranged on the top of the top-connected square tube 6 by bolts. An extension block 14 is fixedly arranged in a rectangular array at the end of the installing square tube 2, and one end of multiple groups of extension blocks 14 are fixedly arranged on the same side of the filter screen 13. A corrugated plate 21 is fixedly arranged on the inner side of the filter screen 13. The cross-sectional shape of the corrugated plate 21 is serpentine, which can provide a certain noise reduction function for the entire ventilation device.

[0022] The inner cavity of the installation square tube 2 is provided with a backblowing component for backblowing the impurities on one side of the filter screen 13, and the backblowing component includes a threaded sleeve 7, a threaded rod 8, and a backblowing box 10. One end of the threaded rod 8 is fixedly connected to the output end of the drive motor 9, and the drive motor 9 is fixedly connected to the side of the installation square tube 2. The other end of the threaded rod 8 is threaded into the threaded sleeve 7, and a threaded cavity is arranged inside the threaded sleeve 7. A backblowing box 10 is fixedly arranged at the end of the threaded sleeve 7. The backblowing box 10 has the same cross-sectional size as the inner cavity of the installation square tube 2, and the backblowing box 10 can move inside the installation square tube 2.

[0023] A left stopper 3 is fixedly provided on one side of the inner cavity of the installation square tube 2, and a right stopper 4 is fixedly provided on the other side of the installation square tube 2 on the backblowing box 10. The one-way valve 1 is specifically arranged on the side of the installation square tube 2 close to the filter screen 13, and the docking hole 11 is used for docking with one end of the installation square tube 2. A docking hole 11 is provided in the middle position of the side of the backblowing box 10, and the backblowing box 10 is arranged in a hollow state. Release pipes 12 are equidistantly provided on the side of the backblowing box 10.

[0024] The specific implementation steps and principles of the utility model are as follows:

[0025] When the whole device is working normally, the one-way valve 1 is connected to an external air source, the back-blowing box 10 is on the left side of the top-connected square tube 6, and the exhaust fan 5 is connected to the filter screen 13. After waiting for a period of time, the drive motor 9 is started, and the drive motor 9 reversely rotates the threaded sleeve 7 through the threaded rod 8, thereby driving the back-blowing box 10 to move to the right side of the top-connected square tube 6. At this time, the exhaust fan 5 is blocked from the filter screen 13, and the docking hole 11 is connected to one side of the one-way valve 1. At this time, the external air source sprays air through the one-way valve 1 and the docking hole 11 to the release pipe 12 on the side of the back-blowing box 10, and the airflow is used to quickly blow away the attachments on the outside of the filter screen 13.

[0026] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ventilation device for reducing noise for HVAC, comprising a square tube (2) for installation, characterized in that: A one-way valve (1) is fixedly arranged on the side of the installation square tube (2); a top-connected square tube (6) is fixedly arranged at the top edge of the installation square tube (2); an exhaust fan (5) is fixedly arranged on the top of the top-connected square tube (6) by means of bolts; an extension block (14) is fixedly arranged in a rectangular array at the end of the installation square tube (2); one end of a plurality of groups of the extension blocks (14) are fixedly arranged on the side of the same filter screen (13); a corrugated plate (21) is fixedly arranged on the inner side of the filter screen (13); and a back-blowing component for back-blowing dirt on one side of the filter screen (13) is arranged in the inner cavity of the installation square tube (2).

2. A ventilation device for HVAC with noise reduction according to claim 1, characterized in that: The backflush assembly comprises a threaded sleeve (7), a threaded rod (8), and a backflush box (10); one end of the threaded rod (8) is fixedly connected to the output end of a drive motor (9); and the drive motor (9) is fixedly connected to the side of the mounting square tube (2).

3. A ventilation device for HVAC with noise reduction according to claim 2, characterized in that: The other end of the threaded rod (8) is threadedly screwed into the threaded sleeve (7), a threaded cavity is arranged inside the threaded sleeve (7), and a backflush box (10) is fixedly arranged at the end of the threaded sleeve (7).

4. A ventilation device for HVAC with noise reduction according to claim 1, characterized in that: A left stopper (3) is fixedly provided on one side of the inner cavity of the installation square tube (2), and a right stopper (4) is fixedly provided on the other side of the installation square tube (2) on the back-blowing box (10).

5. A ventilation device for HVAC with noise reduction according to claim 2, characterized in that: A one-way valve (1) is fixedly connected to a side of the installation square tube (2) close to the filter screen (13), and a docking hole (11) is provided in the middle of the side of the backflush box (10).

6. A ventilation device for HVAC with noise reduction according to claim 2, characterized in that: The backflush box (10) is arranged in a hollow state, and release pipes (12) are arranged equidistantly on the side of the backflush box (10).

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