CN213514129U - Air duct assembly, fan and air conditioner comprising same - Google Patents

Abstract

The utility model provides a wind channel subassembly, fan reach including its air conditioner. The air duct assembly comprises a housing, an air duct for air flow circulation is formed inside the housing, a corner is formed inside the air duct, a turbulence structure is arranged on the inner wall of the air duct at the corner, the turbulence structure comprises at least two protrusions, the airflow is enabled to flow through the turbulence structure in the corner, the airflow flows through the air duct in the width direction, and the airflow at different positions of the turbulence structure generates speed difference. The utility model discloses can make the air current inconsistent in speed field behind the structure through the vortex through the setting of anomalous vortex structure, lead to the air current here to take place the disorder, can't form effectual cyclone phenomenon to can the noise reduction.

Description

Air duct assembly, fan and air conditioner comprising same

Technical Field

The utility model relates to a relevant technical field in wind channel especially relates to a wind channel subassembly, fan and including its air conditioner.

Background

The problems of rotation noise, cavitation abnormal sound and the like of equipment such as a cabinet air conditioner and the like are key problems of the household cabinet machine. The noise and abnormal noise are often generated inside the air-conditioning duct, mainly because the phenomena of cavity cyclone, air flow disorder, uneven air flow velocity field and the like are generated inside the air-conditioning duct due to unreasonable duct profiles and volute structures.

The air duct noise is a great problem which puzzles technicians, for example, in the field of air conditioners, the volute molded line of the air duct is the key work of air conditioner design, and the design of the volute molded line to improve the air duct noise is the main research direction at present.

The part of the volute outlet close to the volute tongue can generate negative pressure, so that large turbulence is generated at the part to cause noise, and therefore, the volute tongue structure is improved by some air ducts, so as to improve the noise problem.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an air duct subassembly, fan and including its air conditioner has solved the bigger technical problem of wind channel internal noise that exists among the prior art, specifically:

in a first aspect, the present invention provides an air duct assembly, comprising a housing, wherein an air duct for air flow is formed inside the housing,

the inside of the air duct is formed with corners,

a turbulence structure is arranged on the inner wall of the air duct at the corner, the turbulence structure comprises at least two bulges,

the turbulence structure enables airflow to flow through different positions of the turbulence structure in the width direction of the air duct to generate speed difference when the airflow flows through the corner.

Further optionally, a space is formed between two adjacent protrusions.

Further optionally, the outer wall surface of the protrusion gradually decreases in height along the airflow direction to form a cambered surface.

Further optionally, a concave flow channel is formed between the two protrusions, and the concave flow channel is arranged along the direction of the airflow.

Further optionally, the shapes of any two of the concave flow passages are different.

Further optionally, the number of the concave flow passages is multiple, and the concave flow passages and the protrusions are arranged at intervals.

Further optionally, the protrusion and the concave flow channel extend in an airflow direction.

Further optionally, the flow perturbation structure forms an irregular shape.

Further optionally, the height, length, and slope of any two of the protrusions are different; and/or the presence of a gas in the gas,

the depth, the length and the inclination of any two of the concave flow passages are different.

Further optionally, the housing includes a volute and a volute tongue, the volute tongue forming the corner, the volute tongue having the spoiler structure disposed thereon.

In a second aspect, the utility model provides a fan, including above-mentioned wind channel subassembly, be formed with the wind wheel chamber in the wind channel subassembly, the wind wheel intracavity is provided with the wind wheel.

Further optionally, the fan is a centrifugal fan.

The third aspect of the present invention provides an air conditioner, including the above-mentioned air duct assembly or fan.

The utility model discloses a corner in the wind channel sets up the vortex structure to make the vortex structure form irregular shape, thereby make the velocity of flow of the air current of vortex structure different positions of flowing through different, form the velocity of flow difference, make the air current inconsistent at the rear speed field through the vortex structure, lead to the air current here to take place the disorder, can't form effectual cyclone phenomenon, thereby can the noise reduction.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

Fig. 1 shows a schematic structural view of the air duct assembly of the present invention;

FIG. 2 shows an enlarged view at A in FIG. 1;

fig. 3 shows that the airflow state at the turbulent flow structure according to the embodiment of the present invention is a schematic diagram.

In the figure:

10. a volute; 20. a volute tongue; 30. a turbulent flow structure; 31. a protrusion; 32. an inward concave flow passage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The utility model discloses a set up the vortex structure in pnematic corner, the irregular shape through the vortex structure makes the velocity of flow of the air current of each position of vortex structure of flowing through different. The velocity field of the airflow is inconsistent after passing through the turbulent flow structure, so that the airflow is disordered at the position, an effective cyclone phenomenon cannot be formed, and the noise can be reduced. The present invention will be described in detail with reference to the following embodiments:

the utility model provides an air duct component, which comprises a shell, wherein an air duct for air flow circulation is formed inside the shell,

the duct interior forms a corner where the duct is reduced in size and the air flow is reduced, preferably the angle between the two walls of the duct forming the corner is greater than or equal to 120 °, i.e. the angle of the corner is greater than or equal to 120 °.

Set up vortex structure 30 in the corner, vortex structure 30 is located the wind channel, and vortex structure 30 includes two at least archs 31, and protruding 31 extends along the air current direction to, two at least archs 31's shape is different, and vortex structure 30 makes the air current produce the speed difference at the air current that flows through vortex structure different positions on the width direction in wind channel when the corner is flowed through to the air current. Specifically, in this embodiment, the width direction of the air duct refers to a direction parallel to an axis of a fan blade disposed in the air duct.

The at least two protrusions 31 create a velocity difference in the air flow at different positions after the air flow passes the corner.

Preferably, the casing includes a volute 10 and a volute tongue 20, the volute 10 and the volute tongue 20 together enclose an air duct, the volute tongue 20 forms a corner in the air duct, the spoiler structure 30 is formed on the volute tongue 20, and further, the spoiler structure 30 is distributed along the width direction of the volute tongue 20 (i.e. the direction perpendicular to the air flow direction).

A space is formed between two adjacent protrusions 31, and the air flow can circulate along the protrusions 31 and the space between the protrusions 31. The height of the outer wall surface of the protrusion 31 is gradually reduced along the airflow direction to form a cambered surface, which is more beneficial for airflow circulation, and preferably, the height of the protrusion 31 is gradually reduced in the airflow circulation direction, and the heights of different protrusions 31 are different, namely, the heights of the highest positions are different.

Preferably, an inner concave flow channel 32 is formed between the two protrusions 31, the inner concave flow channel 32 is arranged along the direction of the airflow, further, the bottom wall of the inner concave flow channel 32 forms an arc surface, which facilitates the airflow circulation, and the shapes of any two inner concave flow channels 32 are different, that is, the depths of any two inner concave flow channels 32 are different.

The plurality of concave flow passages 32 are arranged, the concave flow passages 32 and the protrusions 31 are arranged at intervals, that is, one concave flow passage 32 is arranged between two adjacent protrusions 31, and similarly, one protrusion 31 is arranged between two adjacent concave flow passages 32. For example, at least 2 protrusions 31 and 2 concave flow channels 32 are required to be provided, the height of the protrusion 31 is different from the depth of the concave flow channel 32, and the protrusions 31 and the concave flow channels 32 are staggered with each other, that is, the height, the length, the slope, and the width of any two protrusions 31 are different; and/or the depth, length, slope and width of any two concave flow channels 32 are different. For example, in the following manner: the height of the protrusion 31 is 5mm, the depth of the concave flow channel 32 is 4mm, the height of the protrusion 31 is 3mm, the depth of the concave flow channel 32 is 5mm, and the like can be combined, wherein the height of the protrusion 31 and the depth of the concave flow channel 32 refer to the maximum height or the maximum depth. Preferably, the height difference between the protrusion 31 and the concave flow channel 32 is greater than or equal to 8 mm.

Preferably, in other implementations, the effect of reducing the airflow noise can be achieved by using the same principle and adopting a similar structure with "concave, convex, concave and convex" or "convex, concave, convex and concave" at the corners, and the length and the depth of the mutual concave-convex structure are different, and a detailed description is omitted here.

The utility model discloses at spiral case 10 corner, on volute tongue 20 promptly, adopt height, length, the inequality unsmooth irregular structure of inclination inequality, let the air current when through spiral case 10 corner here, the air current has produced the speed inequality because the distance inequality that passes through on same horizontal plane, as shown in figure 3, the air current is when passing through the corner, speed field from left to right is inconsistent, this kind of inconsistency in speed field can lead to the air current here to take place the disorder (the dotted line represents the air current), can't form effectual cyclone phenomenon, and then reduce the noise that the air current produced.

The utility model also provides a fan, including above-mentioned wind channel subassembly, the fan is preferred centrifugal fan, including spiral case 10 subassembly and wind wheel, spiral case 10 subassembly includes spiral case 10 and snail tongue 20, and spiral case 10 and snail tongue 20 form the wind channel jointly, and the wind wheel setting is in the wind channel.

Specifically, a wind wheel cavity is formed in the volute 10 and used for accommodating a wind wheel, an air outlet channel is formed by a part of the volute 10 and the volute tongue 20 and is communicated with the wind wheel cavity, preferably, the number of the air outlet channels is two, the two air outlet channels are distributed in central symmetry, and the center of the wind wheel cavity forms a symmetry center.

The utility model also provides an air conditioner, including above-mentioned wind channel subassembly or fan, preferably, the air conditioner includes the cabinet-type air conditioner, and the wind channel subassembly constitutes the wind channel of cabinet-type air conditioner.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (13)

1. An air duct assembly, characterized by: comprises a shell, an air channel for air flow circulation is formed in the shell,

the inside of the air duct is formed with corners,

a turbulence structure is arranged on the inner wall of the air duct at the corner, the turbulence structure comprises at least two bulges,

the turbulence structure enables airflow to flow through different positions of the turbulence structure in the width direction of the air duct to generate speed difference when the airflow flows through the corner.

2. The air duct assembly of claim 1, wherein: and a space is formed between every two adjacent bulges.

3. The air duct assembly of claim 2, wherein: the height of the outer wall surface of the bulge is gradually reduced along the airflow direction to form an arc surface.

4. The air duct assembly of claim 3, wherein: an inwards concave flow channel is formed between the two bulges and is arranged along the direction of the airflow.

5. The air duct assembly of claim 4, wherein: the shapes of any two concave flow passages are different.

6. The air duct assembly of claim 5, wherein: the concave flow passages are arranged in a plurality, and the concave flow passages and the bulges are arranged at intervals.

7. The air duct assembly of claim 6, wherein: the protrusion and the concave flow passage extend along the airflow direction.

8. The air duct assembly of claim 6, wherein: the turbulent flow structure forms an irregular shape.

9. The air duct assembly of claim 8, wherein: the height, the length and the inclination of any two of the bulges are different; and/or the presence of a gas in the gas,

the depth, the length and the inclination of any two of the concave flow passages are different.

10. The air duct assembly of any of claims 1-9, wherein: the shell comprises a volute and a volute tongue, the volute tongue forms the corner, and the volute tongue is provided with the turbulence structure.

11. A fan, its characterized in that: comprising the air duct assembly of any of claims 1-10, a wind wheel cavity formed within the air duct assembly, the wind wheel cavity having a wind wheel disposed therein.

12. The fan of claim 11, wherein: the fan is a centrifugal fan.

13. An air conditioner, characterized in that: comprising the air duct assembly of any one of claims 1-10 or the fan of any one of claims 11-12.

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