Fresh air valve

Abstract

The utility model relates to the technical field of ventilation equipment, in particular to a fresh air valve which can effectively reduce noise and comprises a fresh air pipeline, a valve body is arranged on the fresh air pipeline and comprises a control handle, a valve plate and a driving shaft, and a sealing ring is arranged on the periphery of the valve plate. A noise reduction cylinder is arranged on the side, close to the air outlet, of the interior of the fresh air pipeline, an opening is formed in the side, close to the valve plate, of the noise reduction cylinder, a plurality of air outlet holes are formed in the other side of the noise reduction cylinder, the noise reduction cylinder needs to be close to the valve plate under the condition that normal rotation of the valve plate is not affected, and the air outlet holes are obliquely formed. The air outlet holes enable the air to flow away from the inner wall of the fresh air pipeline, the outer wall of the inner side of the noise reduction barrel is obliquely arranged, the noise reduction barrel enables the air to flow away from the inner wall of the fresh air pipeline, and the fresh air pipeline is wrapped with noise reduction materials.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a fresh air valve. Background Art

[0002] As we all know, at present, air pollution is getting more and more serious, and the use of fresh air system has effectively improved the air environment for residents. The control of air volume by fresh air equipment needs to rely on air valves for adjustment, and for existing fresh air equipment, the air valve is usually set in the air inlet duct.

[0003] Existing fresh air valves mostly use valve plates to control and adjust the air volume. When there is a small gap between the valve plate and the inner wall of the pipe, the high-speed airflow passing through the gap will produce a sharp noise (similar to the sound of a whistle), affecting normal use.

[0004] Therefore, the inventor solves the above-mentioned problem by improving the structure of the air valve. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a fresh air valve which can effectively reduce noise.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fresh air valve, including a fresh air duct, a valve is arranged on the fresh air duct, the valve includes a control handle, a valve plate and a drive shaft, a sealing ring is arranged around the valve plate, and is characterized in that: an end cover is installed on the air outlet of the fresh air duct, a sound insulation cotton core is arranged in the middle of the end cover, a noise reduction cylinder is arranged inside the fresh air duct close to and close to the air outlet side, an opening is arranged on the side of the noise reduction cylinder close to the valve plate, and a plurality of air outlet holes are arranged on the other side of the noise reduction cylinder.

[0009] Furthermore, the installation position of the noise reduction cylinder should be close to the valve plate without affecting the normal rotation of the valve plate.

[0010] Furthermore, the air outlet holes are all arranged at an angle, and the air outlet holes make the air flow away from the inner wall of the fresh air duct.

[0011] Furthermore, the outer wall on the inner side of the noise reduction tube is inclined, and the noise reduction tube directs the wind away from the inner wall of the fresh air duct.

[0012] Furthermore, the outside of the fresh air duct is wrapped with noise reduction material.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a fresh air damper, which has the following beneficial effects:

[0015] The fresh air valve has a noise reduction tube and an air outlet. The outer wall of the noise reduction tube allows a part of the wind to flow to the middle of the pipe, and the air outlet can disperse the jet of the other part of the wind, and also allows the wind to flow to the middle of the pipe, which can effectively reduce the friction between the high-speed airflow and the pipe, thereby effectively reducing the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 This is a front view structural schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the first three-dimensional structure of the noise reduction tube of the utility model;

[0020] Figure 5 This is a second three-dimensional structural schematic diagram of the noise reduction tube of the utility model;

[0021] Figure 6 It is a schematic cross-sectional view of the noise reduction tube of the utility model.

[0022] In the figure: 1. Fresh air duct; 2. Control handle; 3. Valve plate; 4. Drive shaft; 5. Sealing ring; 6. End cover; 7. Sound insulation cotton core; 8. Noise reduction cylinder; 9. Opening; 10. Air outlet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 A fresh air valve of the utility model comprises a fresh air duct 1, on which a valve is arranged, the valve comprising a control handle 2, a valve plate 3 and a driving shaft 4, a sealing ring 5 is arranged around the valve plate 3, an end cover 6 is installed on the air outlet of the fresh air duct 1, a sound insulation cotton core 7 is arranged in the middle of the end cover 6, a noise reduction cylinder 8 is arranged inside the fresh air duct 1 near and on one side of the air outlet, an opening 9 is arranged on the side of the noise reduction cylinder 8 near the valve plate 3, and a plurality of air outlet holes 10 are arranged on the other side of the noise reduction cylinder 8.

[0025] The installation position of the noise reduction cylinder 8 should be close to the valve plate 3 without affecting the normal rotation of the valve plate 3 .

[0026] Among them, the air outlet holes 10 are all arranged at an angle, and the air outlet holes 10 make the wind flow away from the inner wall of the fresh air duct 1. The air outlet holes 10 can disperse the jet of another part of the wind, and also make the wind flow to the middle part of the duct.

[0027] Among them, the outer wall inside the noise reduction cylinder 8 is set at an angle, and the noise reduction cylinder 8 makes the wind flow away from the inner wall of the fresh air duct 1. The outer wall inside the noise reduction cylinder 8 makes part of the wind flow to the middle part of the duct, effectively reducing the friction between the high-speed airflow and the duct, thereby effectively reducing the generation of noise.

[0028] Among them, the outside of the fresh air duct 1 is wrapped with noise reduction material.

[0029] To sum up, when this kind of fresh air valve is in use, the outer wall inside the noise reduction cylinder 8 makes a part of the wind flow to the middle part of the pipe, and the air outlet 10 can disperse the jet of the other part of the wind, and also makes the wind flow to the middle part of the pipe, which can effectively reduce the friction between the high-speed airflow and the pipe, and effectively reduce the generation of noise. The sound insulation cotton core 7 can reduce the spread of noise and play a good role in noise reduction. The sound insulation cotton core 7 should be replaced regularly.

[0030] The technical terms or scientific terms used in the description of this application should be the common meanings understood by ordinary technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating orientation used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, so it cannot be understood as a limitation on this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance.

[0031] The words "one", "an" or "the" and the like used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the existence of at least one. The words "include" or "comprise" and the like used in the description of this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.

[0032] 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 fresh air valve, comprising a fresh air duct (1), wherein the fresh air duct (1) is provided with a valve, wherein the valve comprises a control handle (2), a valve plate (3) and a drive shaft (4), wherein a sealing ring (5) is provided around the valve plate (3), wherein: An end cover (6) is installed on the air outlet of the fresh air duct (1), a sound insulation cotton core (7) is arranged in the middle of the end cover (6), a noise reduction cylinder (8) is arranged inside the fresh air duct (1) close to and on one side close to the air outlet, an opening (9) is arranged on the side of the noise reduction cylinder (8) close to the valve plate (3), and a plurality of air outlet holes (10) are arranged on the other side of the noise reduction cylinder (8).

2. A fresh air valve according to claim 1, characterized in that: The installation position of the noise reduction cylinder (8) should be close to the valve plate (3) without affecting the normal rotation of the valve plate (3).

3. A fresh air valve according to claim 1, characterized in that: The air outlet holes (10) are all arranged at an angle, and the air outlet holes (10) allow the air to flow away from the inner wall of the fresh air duct (1).

4. A fresh air valve according to claim 1, characterized in that: The outer wall inside the noise reduction cylinder (8) is arranged to be inclined, and the noise reduction cylinder (8) directs the flow of wind away from the inner wall of the fresh air duct (1).

5. The fresh air valve according to claim 1, characterized in that: The outside of the fresh air duct (1) is wrapped with noise reduction material.

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