CN110887146A

CN110887146A - Air duct assembly and air conditioner fan

Info

Publication number: CN110887146A
Application number: CN201911302520.7A
Authority: CN
Inventors: 梁浩; 柳洲; 高晨辉; 梁文龙; 饶长健
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-03-17

Abstract

The invention relates to an air duct assembly and an air conditioner fan, wherein the air duct assembly comprises: the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet and an air outlet which are communicated with each other; the wind wheel is arranged in the shell and is positioned between the air inlet and the air outlet; the volute tongue is arranged on the inner wall of the shell corresponding to the air outlet, and a gap is formed between the volute tongue and the wind wheel; the grid is arranged between the wind wheel and the air inlet; the grid is provided with an air passing part and a blocking part, and the air passing part is communicated with the air inlet and used for filtering air flow flowing to the wind wheel; the blocking part is arranged on the inner wall of the shell relative to the volute tongue so as to block airflow from directly flowing to the volute tongue from the air inlet, reduce the airflow flowing to the bottom of the volute tongue and prevent the excessive airflow from gathering near the volute tongue and being incapable of being discharged in time to generate noise. And after the airflow flowing to the bottom of the volute tongue is reduced, the backflow airflow near the volute tongue can be more smoothly intersected with the main air flow for air inlet, so that the noise caused by intersection impact of two airflows is reduced, and the noise generated when the air duct assembly works is further reduced.

Description

Air duct assembly and air conditioner fan

Technical Field

The invention relates to the technical field of household appliances, in particular to an air duct assembly and an air conditioner fan.

Background

An air conditioner fan, also called a cooling fan, is a novel refrigeration device, has the advantages of good refrigeration effect, energy conservation, environmental protection, natural humidification, small volume and the like, and is popular with consumers.

The principle of air-conditioning fan work does, provides the power that induced drafts through the wind wheel, with the outside air suction through wet curtain, then send to the external world, reaches the effect of taking a breath and cooling. At present, three types of wind wheels, namely a cross-flow wind wheel, a centrifugal wind wheel and an axial flow wind wheel, are adopted, wherein the cross-flow wind wheel and a component are generally applied to a cooling fan due to simple structure, small size and convenience. However, when a general cross flow type air conditioning fan is operated, a space near a volute tongue is small, air flow is difficult to discharge at one time, backflow and vortex are easy to form, and noise is generated.

Disclosure of Invention

Therefore, it is necessary to provide an air duct assembly and an air conditioning fan to reduce noise generated during operation of the air conditioning fan.

An air duct assembly comprising:

the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet and an air outlet which are communicated with each other;

the wind wheel is arranged in the shell and is positioned between the air inlet and the air outlet;

the volute tongue is arranged on the inner wall of the shell corresponding to the air outlet, and a gap is formed between the volute tongue and the wind wheel; and

the grid is arranged between the wind wheel and the air inlet;

the grid is provided with an air passing part and a blocking part, the air passing part is communicated with the air inlet, and the blocking part is arranged on the inner wall of the shell relative to the volute tongue.

In the air duct assembly, the blocking part of the grid is arranged on the inner wall of the shell relative to the volute tongue so as to block airflow from directly flowing to the volute tongue from the air inlet, reduce the airflow flowing to the bottom of the volute tongue and prevent excessive airflow from gathering near the volute tongue and being incapable of being timely discharged to generate noise. And after the airflow flowing to the bottom of the volute tongue is reduced, the backflow airflow near the volute tongue can be more smoothly intersected with the main air flow for air inlet, so that the noise caused by intersection impact of two airflows is reduced, and the noise generated when the air duct assembly works is further reduced.

In one embodiment, an orthographic projection of the blocking portion toward the volute tongue completely covers the volute tongue.

In one embodiment, a connecting line between the connecting part of the blocking part and the wind passing part and the circle center of the wind wheel is a first connecting line, and a connecting line between one end of the volute tongue facing the blocking part and the circle center of the wind wheel is a second connecting line;

the included angle between the first connecting line and the second connecting line is 30-45 degrees.

In one embodiment, the air passing part is provided with a plurality of air passing holes, and the air passing holes comprise an inlet section and an outlet section which are sequentially distributed in the air passing direction;

the inner wall of the inlet section is arranged in an arc shape and expands outwards; and/or

The inner wall of the outlet section is in an arc shape and is expanded outwards.

In one embodiment, the air passing part comprises a plurality of transverse ribs and a plurality of longitudinal ribs, and the transverse ribs and the longitudinal ribs are staggered to form a grid-shaped structure with a plurality of air passing holes;

at least part of the transverse ribs are arranged in an arc shape along two ends of the wind passing direction; and/or

At least part of the longitudinal ribs are arranged in an arc shape along the connecting end in the air passing direction.

In one embodiment, the longitudinal section of at least part of the transverse ribs is waist-shaped; and/or

At least part of the longitudinal ribs are waist-shaped in longitudinal section.

In one embodiment, the air conditioner further comprises a heating element, and the heating element can extend into the air outlet.

In one embodiment, the heating element reciprocates between a first position extending into the outlet and a second position exiting the outlet.

In one embodiment, the heating member is rotatably disposed in the housing and rotates between the first position and the second position.

In one embodiment, the air conditioner further comprises a wet curtain, and the wet curtain is arranged between the air inlet and the grid.

In one embodiment, the wind guide plate further comprises a wind guide plate arranged in the shell, one end of the wind guide plate is connected with the inner wall of the shell, and the other end of the wind guide plate extends towards the grid;

the wind deflector and the grids are wound outside the wind wheel and form a wind guiding space communicated with the air outlet in a surrounding mode.

An air conditioner fan includes above-mentioned wind channel subassembly.

Drawings

FIG. 1 is a schematic structural view illustrating a heating state of an air duct assembly according to an embodiment of the present invention;

FIG. 2 is a schematic airflow direction view of the air duct assembly shown in FIG. 1;

FIG. 3 is a cross-sectional view of a grill of the air duct assembly of FIG. 1;

fig. 4 is a structural schematic diagram of the air duct assembly shown in fig. 1 in a cooling state.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, in an embodiment of the present invention, an air duct assembly 100 is provided, where the air duct assembly 100 includes a housing 10, a wind wheel 30, a volute tongue 50, and a grid 70.

An air inlet 12 and an air outlet 14 which are communicated with each other are formed in the shell 10, the wind wheel 30 is arranged in the shell 10 and is positioned between the air inlet 12 and the air outlet 14, and external air flow is driven to enter the shell 10 from the air inlet 12 and then flow out from the air outlet 14; the volute tongue 50 is arranged on the inner wall of the shell 10 corresponding to the air outlet 14, and a gap is formed between the volute tongue 50 and the wind wheel 30, so that airflow is guided to smoothly flow out of the air outlet 14 through the volute tongue 50; the grille 70 is arranged between the wind wheel 30 and the air inlet 12 and is provided with an air passing part 72 and a blocking part 74, the air passing part 72 is communicated with the air inlet 12, air flows out after being filtered from the air inlet 12 to the air passing part 72 of the grille 70, and the air flowing to the wind wheel 30 is filtered and guided through the air passing part 72. Moreover, the blocking portion 74 of the grille 70 is disposed on the inner wall of the casing 10 opposite to the volute tongue 50 to block the airflow from the air inlet 12 to the volute tongue 50 directly, so as to reduce the airflow flowing to the bottom of the volute tongue 50 and prevent the excessive airflow from gathering near the volute tongue 50 and being unable to be discharged in time to generate noise. Moreover, after the airflow flowing to the bottom of the volute tongue 50 is reduced, the backflow airflow near the volute tongue 50 can be more smoothly intersected with the main intake airflow, so that the noise caused by intersection impact of two airflows is reduced, and the noise generated when the air duct assembly 100 works is further reduced.

Optionally, the grid 70 is disposed around the periphery of the wind wheel 30, and is in the form of an L-shaped plate with one end connected to the inner wall of the housing 10 and the other end suspended in the air. And, the fillet setting of the edge of L type board prevents that the edge air current transition from concentrating to guide the air current to wind wheel 30 evenly.

In some embodiments, the orthographic projection of blocker 74 toward volute tongue 50 completely covers volute tongue 50, such that airflow is blocked by blocker 74 and no airflow impinges directly on the bottom of volute tongue 50, further reducing noise.

Preferably, the connecting line of the blocking part 74 and the wind passing part 72, which is positioned at the center of the wind wheel 30, is a first connecting line, the connecting line of one end of the volute tongue 50 facing the blocking part 74 and the center of the wind wheel 30 is a second connecting line, and the included angle α between the first connecting line and the second connecting line is 30-45 degrees, so that the width of the blocking part 74 is indirectly reasonable, the airflow flow state can be optimized to reduce noise, and the normal wind passing function of the grid 70 is not influenced.

Referring to fig. 2, in some embodiments, the air passing portion 72 is provided with a plurality of air passing holes 71, and the air passing holes 71 include an inlet section (not shown) and an outlet section (not shown) which are sequentially distributed in an air passing direction, that is, a direction of the airflow passing through the air passing holes 71 is a direction in which the inlet section points to the outlet section. The inner wall of the inlet section is in an arc shape and expands outwards, so that the airflow is guided to flow into the air passing holes 71 more stably and smoothly through the expanded arc-shaped surface, the air passing amount is improved, and the noise of the airflow flowing through the grids 70 is reduced.

It will be appreciated that in other embodiments, the inner wall of the outlet section is flared in an arc shape to guide the airflow to flow out of the air holes 71 more smoothly and smoothly through the flared arc surface, thereby increasing the air flow rate and reducing the noise generated when the airflow passes through the grille 70. It will also be appreciated that in other embodiments, the inner wall of the inlet section is curved and expands outwardly, and the inner wall of the outlet section is curved and expands outwardly, so that the airflow can flow into and out of the air holes 71 more smoothly, the air passing amount is increased, and the noise of the airflow passing through the grille 70 is reduced.

In some embodiments, the air-passing portion 72 includes a plurality of transverse ribs and a plurality of longitudinal ribs, and the plurality of transverse ribs and the plurality of longitudinal ribs are staggered to form a grid-like structure with a plurality of air-passing holes 71. For example, many horizontal muscle are along a direction interval distribution, and many are indulged the muscle and are followed another different direction interval distribution, and so with many crisscross muscle and many the muscle of indulging of following, enclose through two adjacent horizontal muscle and two adjacent muscle of indulging and close and form tetragonal air hole 71 that crosses. It is understood that in other embodiments, the air passing hole 71 may also have other shapes, such as a circle, an ellipse, etc., and is not limited herein.

Specifically to an embodiment, at least some horizontal muscle is the arc setting along the both ends of crossing the wind direction, and after the air current that flows to grid 70 contacted horizontal muscle arc tip, can be comparatively smooth and easy get into wind hole 71, reduce the windward resistance for the velocity of flow increases the air flow, reduces the noise when air current flows through horizontal muscle simultaneously.

Specifically to another embodiment, at least part of the longitudinal ribs are arranged in an arc shape along the two ends of the wind passing direction, and after the airflow flowing to the grid 70 contacts the arc-shaped end parts of the longitudinal ribs, the airflow can smoothly enter the wind passing holes 71, so that the windward resistance is reduced, the flow speed is increased, the airflow is increased, and meanwhile, the noise generated when the airflow flows through the transverse ribs is reduced.

Specifically to another embodiment, at least part is horizontal muscle and is the arc setting along the both ends of crossing the wind direction, and at least part is indulged the muscle and is also the arc setting along the both ends of crossing the wind direction, and the air current that flows to grid 70 contacts to indulge behind the curved tip of muscle and the arc tip of horizontal muscle, and the hole 71 that crosses the wind that gets into that can be comparatively smooth and easy reduces the windward resistance for the velocity of flow increases the air flow, reduces the noise when the air current flows through horizontal muscle simultaneously.

Referring to fig. 3, optionally, at least a portion of the transverse ribs have a waist-shaped longitudinal section, the waist-shaped longitudinal section has a head portion and a tail portion along the anti-wind direction, the head portion and the tail portion are both arc-shaped, and the arc radius R of the head portion is₁The distance L between the center of the head and the center of the tail is 0.5 part, and the radius R of the arc of the tail is₂The distance L between the center of the head and the center of the tail can be 6-8mm, which is 0.3 times of the distance L between the center of the head and the center of the tail.

Optionally, the longitudinal section of at least part of the longitudinal ribs is waist-shaped, the waist-shaped rib is provided with a head part and a tail part along the anti-overfire direction, the head part and the tail part are both arc-shaped, and the arc radius R of the head part₁The distance L between the center of the head and the center of the tail is 0.5 part, and the radius R of the arc of the tail is₂The distance L between the center of the head and the center of the tail can be 6-8mm, which is 0.3 times of the distance L between the center of the head and the center of the tail.

Referring to fig. 1, in some embodiments, the air duct assembly 100 further includes an air guiding plate 60 disposed in the housing 10, one end of the air guiding plate 60 is connected to the inner wall of the housing 10, the other end of the air guiding plate 60 extends toward the grid 70, and the air guiding plate 60 and the grid 70 are disposed around the wind wheel 30 and enclose to form an air guiding space 61 communicated with the air outlet 14. The airflow flows into the air guiding space 61 from the air inlet 12 through the grid 70, and then flows out from the air outlet 14 under the guidance of the air deflector 60, and the air deflector 60 blocks and gathers the airflow sucked by the wind wheel 20, so as to improve the airflow discharged from the air outlet 14.

Referring to fig. 1, in some embodiments, the air duct assembly 100 further includes a heating element 80, the heating element 80 may extend into the air outlet 14 to heat the air flowing through the air outlet 14, and the air outlet 14 sends out warm air to achieve a heating function.

Referring to fig. 1 and 4, in particular, the heating element 80 reciprocates between a first position extending into the outlet 14 and a second position exiting the outlet 14. When the heating element 80 moves to the first position, it extends into the air outlet 14, and can heat the air flowing through the air outlet 14, at this time, the air output from the air outlet 14 is warm air, and the air duct assembly 100 is in a heating mode; when the heating element 80 moves to the second position, it exits the air outlet 14, and the air flow that does not flow through the air outlet 14 is heated, and at this time, the air flow output from the air outlet 14 is cool air, and the air duct assembly 100 is in the cooling mode. In this way, the air duct assembly 100 has not only a cooling mode but also a heating mode, and the functions are more diversified.

Further, the heating element 80 is rotatably disposed on the housing 10 and rotates between a first position and a second position, and the air duct assembly 100 is switched between the heating mode and the cooling mode by the rotation of the heating element 80 relative to the housing 10. Moreover, the inner wall of the housing 10 is provided with a groove for accommodating the heating plate rotating to the second position, and when the heating plate does not extend into the air outlet 14, the heating plate can be accommodated in the groove without protruding out of the inner surface of the housing 10, thereby not influencing the flow of air flow.

Referring again to fig. 1, in particular, the heating member 80 is a PTC (thermistor) plate, which has a good heating performance. Preferably, the thickness a of the PTC plate is 3-5mm, and the length b of the PTC plate in the direction perpendicular to the rotation axis is 30-35mm, so that when the PTC plate is inserted into the air outlet 14, not only the air flow can be heated, but also the air flow is less affected.

It is understood that in other embodiments, the heating element 80 may be slidably disposed relative to the air outlet 14, and is not limited herein.

In some embodiments, the air duct assembly 100 further includes a wet curtain 90, and the wet curtain 90 is disposed between the air inlet 12 and the grille 70 for humidifying the airflow flowing to the wind wheel 30, so as to increase the humidity of the airflow discharged from the air duct assembly 100 and improve the wind sensation experienced by the user.

Based on the same inventive concept, the application also provides an air conditioner fan which comprises the air duct assembly 100, is low in noise and large in air outlet quantity during working, and has double functions of cooling and heating.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An air duct assembly, comprising:

the air conditioner comprises a shell (10), wherein an air inlet (12) and an air outlet (14) which are communicated with each other are formed in the shell (10);

the wind wheel (30) is arranged in the shell (10) and is positioned between the air inlet (12) and the air outlet (14);

the volute tongue (50) is arranged on the inner wall of the shell (10) corresponding to the air outlet (14), and a gap is reserved between the volute tongue and the wind wheel (30); and

the grid (70) is arranged between the wind wheel (30) and the air inlet (12);

the grid (70) is provided with an air passing part (72) and a blocking part (74), the air passing part (72) is communicated with the air inlet (12), and the blocking part (74) is arranged on the inner wall of the shell (10) relative to the volute tongue (50).

2. The air duct assembly according to claim 1, characterized in that an orthographic projection of the blocking portion (74) towards the volute tongue (50) completely covers the volute tongue (50).

3. The air duct assembly according to claim 1, wherein a connecting line between a connecting position of the blocking portion (74) and the air passing portion (72) and a circle center of the wind wheel (30) is a first connecting line, and a connecting line between one end of the volute tongue (50) facing the blocking portion (74) and the circle center of the wind wheel (30) is a second connecting line;

the included angle (α) between the first connecting line and the second connecting line is 30-45 degrees.

4. The air duct assembly according to any one of claims 1 to 3, wherein the air passing portion (72) is provided with a plurality of air passing holes (71), and the air passing holes (71) comprise an inlet section and an outlet section which are sequentially distributed in the air passing direction;

5. The air duct assembly according to claim 4, characterized in that the air passing portion (72) comprises a plurality of transverse ribs and a plurality of longitudinal ribs, which are staggered to form a grid-like structure with a plurality of air passing holes (71);

6. The air duct assembly of claim 5, wherein at least some of the transverse ribs are kidney-shaped in longitudinal cross-section; and/or

7. The air duct assembly of claim 1, further comprising a heating element (80), the heating element (80) being extendable into the air outlet (14).

8. The air duct assembly of claim 7, wherein the heating element (80) reciprocates between a first position extending into the air outlet (14) and a second position exiting the air outlet (14).

9. The air duct assembly of claim 8, wherein the heating element (80) is rotatably disposed in the housing (10) and rotates between the first position and the second position.

10. The air duct assembly of claim 1, further comprising a wet curtain disposed between the air intake (12) and the grill (70).

11. The air duct assembly of claim 1, further comprising an air deflector disposed within the housing, one end of the air deflector being connected to an inner wall of the housing, the other end of the air deflector extending toward the grille;

12. An air conditioning fan, characterized in that it comprises an air duct assembly (100) according to any one of the preceding claims 1 to 10.