Air duct assembly and air supply device

Abstract

The utility model discloses an air duct assembly and an air supply device, and the air duct assembly comprises a volute which comprises an upper mounting table, a lower mounting table and an air guide plate arranged between the upper mounting table and the lower mounting table; the flow guide support is connected between the upper mounting table and the lower mounting table, the flow guide support and the air guide plate are arranged at intervals, an air inlet is defined by the flow guide support and one side of the air guide plate, and an air outlet is defined by the flow guide support and the other side of the air guide plate; the air supply mechanism is connected between the upper mounting table and the lower mounting table, is positioned between the air guide plate and the flow guide bracket and is used for conveying air flow from the air inlet to the air outlet; the part, located on one side of the air inlet, of the air guide plate is obliquely arranged in the direction away from the air supply mechanism. According to the air duct assembly, due to the fact that the portion, on one side of the air inlet, of the air guide plate is obliquely arranged in the direction away from the air supply mechanism, when air flow conveyed by the air supply mechanism flows out, impact noise caused by the fact that the air flow directly impacts the air guide plate is avoided, and the effect of reducing noise in the volute is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air supply devices, in particular to an air duct component and an air supply device. Background Art

[0002] In winter, heaters are widely used in hotels, homes, factories, farms, etc. In existing electric heaters, the air supply mechanism sucks in the room's normal temperature air and blows it to the heating element. The normal temperature air is heated by the heat or infrared rays released by the heating element after it is powered on. Finally, the heated air flows into the space to achieve the purpose of heating the user.

[0003] However, when the air supply mechanism in the prior art delivers airflow, the airflow is thrown directly onto the shell wall of the volute located on the air inlet side, thereby generating relatively large noise. Utility Model Content

[0004] In order to solve at least one problem existing in the above-mentioned prior art, according to the first aspect of the utility model, an air duct assembly is provided, comprising: a volute, comprising an upper mounting platform, a lower mounting platform and an air guide plate arranged between the upper mounting platform and the lower mounting platform; a guide bracket, connected between the upper mounting platform and the lower mounting platform, and spaced apart from the air guide plate, so as to define an air inlet and an outlet with one side of the air guide plate, and an air outlet with the other side of the air guide plate; an air supply mechanism, connected between the upper mounting platform and the lower mounting platform, and located between the air guide plate and the guide bracket, for conveying airflow from the air inlet to the air outlet; wherein the air guide plate has a portion on one side of the air inlet that is inclined away from the air supply mechanism.

[0005] In some embodiments, the air guide plate includes an air inlet portion and an air duct portion connected in sequence, the air inlet portion is located at the air inlet, and the air duct portion is respectively arranged between the air supply mechanism and the guide bracket to form an airflow duct; wherein the air inlet portion is inclined in a direction away from the air supply mechanism, and the angle of inclination relative to the air duct portion is between 20-30°.

[0006] In some embodiments, the inclination angle of the air inlet is 25°.

[0007] In some embodiments, the air guide plate extends on one side of the air inlet in a direction opposite to the air flow inflow direction so as to surround a portion of the air supply mechanism.

[0008] In some embodiments, the air supply mechanism includes a drive motor and a wind wheel, the drive motor is used to drive the wind wheel to rotate, the wind wheel includes a mounting plate and blades arranged on the mounting plate, and the blades are arranged in a radial direction of the mounting plate along the direction of wind flow.

[0009] In some embodiments, the air guide bracket includes a blocking portion and an air guide portion, the blocking portion faces the air supply mechanism, and the air guide portion and the volute are arranged opposite to each other.

[0010] In some embodiments, the air guide portion is inclined in a direction away from the volute.

[0011] In some embodiments, the air guide bracket further includes a plurality of support portions, and the plurality of support portions are respectively connected between the blocking portion and the air guide portion from top to bottom.

[0012] According to a second aspect of the utility model, an air supply device is provided, comprising: a housing; and the above-mentioned air duct assembly, wherein the air duct assembly is arranged in the housing.

[0013] In summary, the air duct assembly and air supply device provided by the utility model have the following technical effects:

[0014] The air inlet and outlet are defined by the guide bracket and the air guide plate. When the air supply mechanism is conveying airflow, the air guide plate on the air inlet side has a portion that is inclined away from the air supply mechanism. Therefore, when the airflow conveyed by the air supply mechanism flows out, it will not directly impact the air guide plate and generate impact noise, thereby achieving the effect of reducing the noise in the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of an air supply device according to an embodiment of the utility model from one perspective;

[0016] Figure 2 for Figure 1 A structural schematic diagram of the air supply device from another perspective;

[0017] Figure 3 This is a schematic diagram of the structure of the air duct assembly of an embodiment of the utility model;

[0018] Figure 4 for Figure 3 An exploded schematic diagram of the air duct components in FIG.

[0019] Figure 5 for Figure 3 Schematic cross-sectional view of the air duct assembly in FIG.

[0020] Figures: 100-air duct assembly, 10-volute, 11-upper mounting platform, 12-lower mounting platform, 13-air guide plate, 131-air inlet, 132-air duct part, 14-air inlet, 15-air outlet, 16-airflow duct, 20-air supply mechanism, 21-drive motor, 22-wind wheel, 221-mounting plate, 222-blades, 30-air guide bracket, 31-blocking part, 32-air guide part, 33-support part, 200-air supply device, 210-housing, 211-inlet, 212-outlet. DETAILED DESCRIPTION

[0021] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "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, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] See also Figures 3 to 5 The air duct assembly 100 provided in the embodiment of the utility model includes a volute 10, an air supply mechanism 20 and a guide bracket 30.

[0026] Among them, the volute 10 is used to guide the wind flow so that the wind flow can flow in a spiral shape, specifically, it includes an upper mounting platform 11, a lower mounting platform 12 and an air guide plate 13 arranged between the upper mounting platform 11 and the lower mounting platform 12; the air guide bracket 30 is connected between the upper mounting platform 11 and the lower mounting platform 12, and is spaced apart from the air guide plate 13 to define an air inlet 14 with one side of the air guide plate 13, and define an air inlet 15 with the other side of the air guide plate 13; the air supply mechanism 20 is connected between the upper mounting platform 11 and the lower mounting platform 12, and is located between the air guide plate 13 and the air guide bracket 30, and is used to transport the wind flow from the air inlet 14 to the air outlet 15; wherein, the air guide plate 13 has a portion on one side of the air inlet 14 that is inclined in a direction away from the air supply mechanism 20.

[0027] The above-mentioned air duct assembly 100 defines an air inlet 14 and an air outlet 15 through a guide bracket 30 and an air guide plate 13. When the air supply mechanism 20 is conveying airflow, a portion of the air guide plate 13 on one side of the air inlet 14 is inclined away from the air supply mechanism 20. Therefore, when the airflow conveyed by the air supply mechanism 20 flows out, it will not directly impact the air guide plate 13 and generate impact noise, thereby achieving the effect of reducing the noise inside the volute 10.

[0028] Among them, the volute 10 of this embodiment is a composite material of polypropylene and glass fiber. Glass fiber is a fireproof material with good corrosion resistance and good sound insulation performance. Polypropylene is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic with the advantages of chemical resistance, heat resistance, electrical insulation and high-strength mechanical properties. By preparing the volute 10 using a composite material of polypropylene and glass fiber, the volute 10 has the lightweight characteristics of plastic. Compared with metal materials, plastic parts have a certain degree of softness, and the inner wall can have the advantage of being smooth. When the wind flow hits the inner wall, the wind resistance can be reduced to achieve the effect of reducing the whistling sound.

[0029] Specifically, see Figure 5The air guide plate 13 includes an air inlet portion 131 and an air duct portion 132 connected in sequence, the air inlet portion 131 is located at the air inlet 14, and the air duct portion 132 is respectively arranged between the air supply mechanism 20 and the guide bracket 30 to form an airflow duct 16, wherein the air inlet portion 131 is inclined in the direction away from the air supply mechanism 20, and the angle of inclination relative to the air duct portion 132 is between 20-30°, specifically, the angle θ between the section a on the side where the air duct portion 132 is connected to the air inlet portion 131 is between 20-30°, so that the inclination angle of the air inlet portion 131 is set within an appropriate range, not too large or too small, so as to avoid losing the effect of guiding the airflow into the airflow duct 16 when the inclination angle is set to be large, and to avoid failing to achieve the effect of reducing the impact noise of the airflow delivered by the air supply mechanism 20 when the inclination angle is set to be too small.

[0030] The angle θ between the air inlet portion 131 and the section a of the air duct portion 132 connected to one side of the air inlet portion 131 can be set to 20°, 22°, 25°, 27° or 30°, etc., which is not limited here.

[0031] In a specific embodiment of the present invention, the angle θ between the air inlet portion 131 and the section a of the air duct portion 132 connected to one side of the air inlet portion 131 is 25°, so that a good wind guiding effect can be ensured while ensuring an appropriate noise reduction effect.

[0032] Furthermore, the air guide plate 13 extends on one side of the air inlet 14 in the opposite direction of the wind flow inflow direction so as to surround part of the air supply mechanism 30. For example, along the radial direction of the air supply mechanism 30, it can extend at least to 3 / 5 of the radial direction of the air supply mechanism 30 so as to reduce the effect of the air inlet 14 formed between the air guide bracket 30, so that the smaller air inlet 14 can increase the air inlet pressure of the air supply mechanism 30, thereby achieving the effect of increasing the pressure of the delivered airflow.

[0033] See also Figure 3 and Figure 4In one embodiment of the utility model, the air supply mechanism 20 includes a driving motor 21 and a wind wheel 22. The driving motor 21 is used to drive the wind wheel 22 to rotate. The wind wheel 22 includes a mounting plate 221 and blades 222 arranged on the mounting plate 221. The blades 222 deviate from the radial direction of the mounting plate 221 along the flow direction of the wind flow. In this way, the wind wheel 22 is driven to rotate by the motor to realize the transportation of wind flow. The blades 222 in the wind wheel 22 are arranged to deviate from the radial direction of the mounting plate 221 along the flow direction of the wind flow. According to the Coanda effect, when a fluid (such as water flow or air flow) encounters a surface of an object with curvature during the flow process, it will change the original flow direction and flow along the surface of the curvature. In this way, the inclined blades 22 can increase the contact area with the wind flow, so that when the air flow is transported by the wind wheel 22, the wind pressure can be increased, the wind sound becomes dull, and the noise reduction effect is achieved.

[0034] See also Figure 3 and Figure 5 In one embodiment of the utility model, in order to enable the wind flow to be discharged in a concentrated manner, the air duct assembly 100 also includes a guide bracket 30, which is arranged at the air outlet 15 and is arranged opposite to the volute 10, and is used to define an outlet duct for the wind flow between the volute 10. It can be understood that the outlet duct is a part of the wind flow duct 16, so that when the wind flow is transported by the air supply mechanism 20, it can flow out between the guide bracket 30 and the air outlet portion 132 of the volute 10, thereby avoiding excessive dispersion of the wind flow and ensuring the air outlet volume and air outlet pressure.

[0035] Specifically, see Figures 3 to 5 The air guide bracket 30 includes a blocking portion 31 and an air guide portion 32, the blocking portion 31 faces the air supply mechanism 20, the air guide portion 32 and the volute 10 are arranged relative to each other, specifically, relative to the air duct portion 132, so that the air supply mechanism 20 can be arranged between the blocking portion 31 and the air guide plate 13 through the blocking portion 31, thereby defining the air inlet 14 and the air outlet 15, and an air outlet duct is defined between the air guide portion 32 and the air outlet portion 132 of the volute 10, and the wind flows out from the air outlet duct.

[0036] Among them, in order to expand the air outlet range, the air guide portion 32 is tilted in the direction away from the volute 10, that is, the blocking portion 31 and the air guide portion 32 are set at an acute angle. By setting the air guide portion 32 to be tilted in the direction away from the volute 10, the air outlet duct formed between the air guide portion 32 and the volute 10 is gradually enlarged along the flow direction of the wind flow, so as to achieve the effect of expanding the air supply range and avoid the wind flow being delivered along a more concentrated area and affecting the coverage range of users.

[0037] Furthermore, in order to ensure the structural strength of the air guide bracket 30, the air guide bracket 30 also includes a plurality of support parts 33, and the plurality of support parts 33 are respectively connected between the blocking part 31 and the air guide part 32 from top to bottom. In this way, the structural strength of the entire air guide bracket 30 is increased through the support of the plurality of support parts 33, thereby preventing the blocking part 31 and the air guide part 32 having a certain extended length in the vertical direction from being easily bent and deformed.

[0038] See also Figure 1 and Figure 2 In another embodiment, the utility model further provides an air supply device 200, which can be a cold air supply device, or a warm air supply device, or a cold and warm air supply device 200.

[0039] Specifically, the air supply device 200 includes a shell 210 and the above-mentioned air duct assembly 100. The air duct assembly 100 is arranged in the shell 210. The shell 210 is provided with an inlet 211 and an outlet 122. The airflow is transported by the air supply mechanism 20, flows in from the inlet 211, and flows out from the outlet 212, so that air is supplied to the user.

[0040] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An air duct assembly (100), characterized in that: include: A volute (10) comprises an upper mounting platform (11), a lower mounting platform (12), and an air guide plate (13) disposed between the upper mounting platform (11) and the lower mounting platform (12); a guide bracket (30) connected between the upper mounting platform (11) and the lower mounting platform (12), and spaced apart from the air guide plate (13) so as to define an air inlet (14) on one side of the air guide plate (13) and an air outlet (15) on the other side of the air guide plate (13); an air supply mechanism (20), connected between the upper mounting platform (11) and the lower mounting platform (12), and located between the air guide plate (13) and the air guide bracket (30), and used for conveying airflow from the air inlet (14) to the air outlet (15); Wherein, the air guide plate (13) has a portion on one side of the air inlet (14) that is tilted in a direction away from the air supply mechanism (20).

2. The air duct assembly (100) according to claim 1, characterized in that: The air guide plate (13) comprises an air inlet portion (131) and an air duct portion (132) connected in sequence, the air inlet portion (131) being located at the air inlet (14), and the air duct portion (132) being respectively arranged between the air supply mechanism (20) and the air guide bracket (30) to form an air flow duct (16); The air inlet portion (131) is tilted in a direction away from the air supply mechanism (20), and the angle of the outward tilt relative to the air duct portion (132) is between 20 and 30 degrees.

3. The air duct assembly (100) according to claim 2, characterized in that: The inclination angle of the air inlet portion (131) is 25°.

4. The air duct assembly (100) according to any one of claims 1 to 3, characterized in that: The air guide plate (13) extends on one side of the air inlet (14) in a direction opposite to the air flow inflow direction so as to surround a portion of the air supply mechanism (20).

5. The air duct assembly (100) according to any one of claims 1 to 3, characterized in that: The air supply mechanism (20) comprises a driving motor (21) and a wind wheel (22); the driving motor (21) is used to drive the wind wheel (22) to rotate; the wind wheel (22) comprises a mounting plate (221) and blades (222) arranged on the mounting plate (221); the blades (222) are arranged in a radial direction deviating from the mounting plate (221) along the flow direction of the wind flow.

6. The air duct assembly (100) according to any one of claims 1 to 3, characterized in that: The air guide bracket (30) comprises a blocking portion (31) and an air guide portion (32); the blocking portion (31) faces the air supply mechanism (20); and the air guide portion (32) and the volute (10) are arranged relative to each other.

7. The air duct assembly (100) according to claim 6, characterized in that: The air guide portion (32) is arranged to be inclined in a direction away from the volute (10).

8. The air duct assembly (100) according to claim 7, characterized in that: The air guide bracket (30) further comprises a plurality of support portions (33), wherein the plurality of support portions (33) are respectively connected between the blocking portion (31) and the air guide portion (32) from top to bottom.

9. The air supply device (200) is characterized in that: include: Housing (210); The air duct assembly (100) according to any one of claims 1 to 8, wherein the air duct assembly (100) is disposed in the housing (210).

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