WO2023103118A1

WO2023103118A1 - Volute structure, air duct component, and air conditioner

Info

Publication number: WO2023103118A1
Application number: PCT/CN2021/142237
Authority: WO
Inventors: 代思全; 张勇; 熊军; 高旭; 张幼财
Original assignee: Tcl空调器(中山)有限公司
Priority date: 2021-11-30
Filing date: 2021-12-28
Publication date: 2023-06-15
Also published as: CN216691607U; CN114962335A

Abstract

A volute structure (1), comprising: a volute body (10) having a body portion (11) and an outlet portion (12), wherein a volute tongue (14) is formed at a connection location between the body portion (11) and the outlet portion (12); and a first flow guide member (20), disposed in the body portion (11) and/or the outlet portion (12), and used to form, at a position close to the volute tongue (14), a counter airflow opposite to an air outlet direction of the body portion (11), so as to block an airflow impacting the volute tongue (14) in the body portion (11).

Description

Volute structure, air duct components and air conditioner

technical field

The present disclosure relates to the technical field of air conditioners, in particular to a volute structure, an air duct component and an air conditioner.

Background technique

The air conditioner is an air conditioner, which can adjust and control the temperature, humidity, flow rate and other parameters of the air in the indoor environment to increase the comfort of the indoor air environment.

technical problem

In the related art, the air duct of the air conditioner is noisy, which reduces the use comfort.

technical solution

In a first aspect, an embodiment of the present disclosure provides a volute structure, including: a volute body having a body portion and an outlet portion, a volute tongue is formed at a connection between the body portion and the outlet portion; a first flow guide member , which is arranged in the body part and/or the outlet part, and is used to form a counter-airflow opposite to the air outlet direction of the body part at a position close to the volute tongue, so as to block the impact caused by the impact in the body part. Describe the airflow of the cochlear tongue.

In some embodiments, the first deflector is disposed in the outlet portion, and divides the outlet portion into an air outlet chamber and an air return chamber, and the air pressure in the air return chamber near one end of the volute tongue greater than the air pressure at the end of the return air cavity away from the volute tongue, so as to form the counter-airflow.

In some embodiments, the cross-section of the first air guide is straight, V-shaped, arcuate or triangular.

In some embodiments, the first deflector is arranged parallel to a side wall of the outlet portion connected to the volute tongue.

In some embodiments, the first deflector is provided with a bent portion at an end close to the volute tongue, and the bent portion is used to block the airflow in the body portion that impinges on the volute tongue.

In some embodiments, the bending radius of the bending portion is smaller than the bending radius of the volute tongue.

In some embodiments, the first air guide is disposed in the body portion to at least partially block the airflow in the body portion striking the volute tongue.

In some embodiments, a cavity is formed between the first deflector and the volute tongue, and the air pressure at the end of the cavity away from the outlet is smaller than that at the end of the cavity near the outlet. Air pressure to form the counter air flow.

In some embodiments, the cross section of the first deflector is circular or elliptical.

In some embodiments, it also includes a second flow guide, the body part has an outlet section connected to the outlet part, the second flow guide is at least partially disposed on the outlet section, the second A portion of the air guide element located in the outlet section extends to a region near the first air guide element along the extension direction of the outlet section.

In some embodiments, the second deflector extends from the outlet segment to an upstream segment of the outlet segment, and a portion of the second deflector located in the upstream segment extends along a first direction. , the first direction is parallel to the tangent plane of the upstream segment at its junction with the outlet segment.

In some embodiments, the volute body has front and rear sidewalls arranged oppositely along its axial direction, the second flow guide is disposed in one of the front and rear sidewalls, the second flow guide There is a gap between the front and rear side walls and the other one of the front and rear side walls; the orthographic projection of the second deflector on the axial plane of the fan blade partially overlaps with the fan blade.

In some embodiments, the body portion has a circumferential wall surrounding the blade, the outlet portion has a volute tongue side and an opposite side, the volute tongue side is connected to the volute tongue, and the first guide The distance between the member and the opposite side is a first distance, the distance between the part of the peripheral wall located at the outlet section and the second flow guide is a second distance, and the first distance is greater than the Describe the second distance.

In some embodiments, the body portion has a circumferential wall surrounding the blades, and along the direction from the exit section approaching the exit section, the portion of the circumferential wall located in the exit section approaches the tangential plane. One side of the fan blade is inclined.

In some embodiments, the body portion has an outlet section connected to the outlet portion and a circumferential wall surrounding the blade, the outlet portion has a volute tongue side and an opposite side, the volute tongue side and the A volute tongue connection, the part of the peripheral wall located at the outlet section and the opposite side are coplanar.

In a second aspect, an embodiment of the present disclosure provides an air duct component, including: the volute structure described in any of the above embodiments; The volute flow passage is defined.

In a third aspect, an embodiment of the present disclosure provides an air conditioner, including the air duct component described in any one of the above embodiments.

Beneficial effect

In the embodiment of the present disclosure, a first air guide is provided in the body part and/or the outlet part of the volute body, and after the air flows through the annular flow channel between the body part and the fan blade, most of the air volume bypasses the volute tongue and enters. The outlet part, through the outlet part for external air supply, a small part of the air volume will pass through the volute tongue to form an airflow impacting the volute tongue; the first deflector can form a position opposite to the air outlet direction of the body part near the volute tongue. The opposite airflow blocks the airflow in the main body impacting on the volute tongue, which can reduce or prevent the direct impact of the airflow in the main body on the volute tongue, thereby reducing or eliminating the loud noise caused by the large impact on the volute tongue.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is an axonometric structure diagram of a volute structure provided by some embodiments of the present disclosure;

Fig. 2 is an axial projection structure diagram of a volute structure provided by some embodiments of the present disclosure;

Fig. 3 is another axial projection structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 4 is another axial projection structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 5 is another axial projection structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 6 is another axial projection structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 7 is another axial projection structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 8 is another axonometric structure diagram of the volute structure provided by some embodiments of the present disclosure;

Fig. 9 is a cross-sectional structure diagram of a volute structure provided by some embodiments of the present disclosure;

Fig. 10 is an axonometric structural view of an air duct component provided by some embodiments of the present disclosure.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present disclosure.

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

The use of "adapted to" or "configured to" in this disclosure means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. Additionally, the use of "based on" is meant to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or beyond stated values.

In this disclosure, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this disclosure as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to make and use the present disclosure. In the following description, details are set forth for purposes of explanation. It should be understood that one of ordinary skill in the art would recognize that the present disclosure may be practiced without the use of these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of the present disclosure with unnecessary detail. Therefore, the present disclosure is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in the present disclosure.

In the related art, the impeller of the centrifugal fan generates periodic force when the blades rotate, so that the actual airflow presents an uneven flow field at the outlet of the impeller, which changes periodically and pulses with time. Especially in the cochlear tongue area where the gap is the smallest, the cochlear tongue is most impacted by the pressure pulsating with time, forming a relatively major source of aerodynamic noise, resulting in a larger cochlear tongue noise. Correspondingly, the air duct noise of the air conditioner adopting the centrifugal fan is relatively large, which reduces the use comfort.

As shown in Figures 1 to 6, in the first aspect, the embodiment of the present disclosure provides a volute structure 1, the volute structure 1 includes a volute body 10 and a first flow guide 20, which can reduce the noise of the air duct and increase the use comfort.

The volute body 10 is shaped like a snail shell and has a body part 11 and an outlet part 12 connected to each other. A volute tongue 14 is formed at the junction of the body part 11 and the outlet part 12. The volute tongue 14 has a tongue-like structure and can prevent air from circulating in the volute. Fan blades may be arranged in the body part 11 , and the air flows through the annular channel between the body part 11 and the fan blades and then is discharged from the outlet part 12 . The outlet portion 12 may have a volute tongue side 121 and an opposite side 122 oppositely disposed. The volute tongue side 121 and the opposite side 122 are opposite side walls of the outlet portion 12 . The volute tongue side 121 is connected to the volute tongue 14 .

The first deflector 20 can be arranged in the body portion 11 and/or the outlet portion 12, and is used to form a counter airflow opposite to the air outlet direction of the body portion 11 at a position close to the volute tongue 14, so as to block the flow in the body portion 11. The airflow that impinges on the volute tongue 14. In some embodiments, the first deflector 20 may only be disposed in the body portion 11; in other embodiments, the first deflector 20 may be disposed only in the outlet portion 12; in still other embodiments, The first deflector 20 can extend from the body part to the outlet part 12 , so that a part of the first deflector 20 is located in the body part 11 and another part is located in the outlet part 12 .

When the volute structure 1 provided by the embodiment of the present disclosure needs to supply air, after the air flows through the annular flow channel between the main body 11 and the blades, most of the air volume bypasses the volute tongue 14 and enters the outlet 12, passes through The outlet part 12 supplies air to the outside, and a small part of the air volume will pass through the volute tongue 14 to form an airflow that impacts the volute tongue 14; The opposite airflow, thereby blocking the airflow in the body part 11 impacting the volute tongue 14, can reduce or prevent the direct impact of the airflow in the body part 11 on the volute tongue 14, thereby reducing or eliminating the impact caused by the large impact on the volute tongue 14. Loud noise.

In some embodiments, the first deflector 20 can be disposed in the outlet portion 12, and divide the outlet portion 12 into an air outlet chamber 12a and an air return chamber 12b, and the air outlet chamber 12a and the air return chamber 12b are arranged along the outlet portion. The vertical direction of the extending direction of 12 is adjacently arranged successively. Here, one side of the first deflector 20 may be disposed opposite to the opposite side 122 to define an air outlet chamber 12a, and the other side of the first deflector 20 may be disposed opposite to the volute tongue side 121 to define a return chamber 12b. Here, the air pressure at the end of the return air cavity 12b near the volute tongue 14 is greater than the air pressure at the end of the cavity away from the volute tongue, so as to form a counter-airflow; The direction of the wind is opposite. In some examples, the input end of the air return chamber 12b can be opened between the end of the first air guide 20 away from the blade and the volute tongue side 121, and communicated with the air outlet end of the air outlet chamber 12a; the air return chamber 12b The output end of the first deflector 20 can be opened between the end of the first air guide 20 close to the fan blade and the tongue top of the volute tongue 14, correspondingly facing the gap area between the volute tongue 14 and the fan blade. Correspondingly, the air pressure at the input end of the return air cavity 12b is greater than the air pressure at the output end thereof.

When the volute structure 1 provided by the embodiment of the present disclosure needs to supply air, the air enters the outlet portion 12 after flowing through the annular flow channel between the body portion 11 and the fan blade, and can be directly discharged to the outside through the air outlet chamber 12a. Satisfy the demand of air supply; by adjusting the flow ratio of the air outlet chamber 12a and the return air chamber 12b, the demand of large flow air supply can be met. Since the air pressure at the input end of the return air chamber 12b is greater than the air pressure at its output end, the wind entering the outlet portion 12 from the annular flow channel cannot return to the air chamber 12b from the output end of the return air chamber 12b, ensuring that the air outlet can only pass through the air outlet chamber 12a On the contrary, the air located in the area adjacent to the air return chamber 12b in the air outlet chamber 12a can enter the return air chamber 12b from the input end of the return air chamber 12b under the force of the pressure difference, and pass through the return air chamber 12b and Its output end returns to the area between the volute tongue 14 and the fan blade. Furthermore, the air returned to between the volute tongue 14 and the blades flows along the tongue top surface of the volute tongue 14 to form a gas protection layer on the surface of the volute tongue 14 . Like this, when the air-flow in the body portion 11 flows through the gap region between the volute tongue 14 and the fan blade, the air-flow in the body portion 11 will directly act on the gas protection layer on the surface of the volute tongue 14; In the direction of the gap between the leaves, the airflow direction in the body part 11 is roughly opposite to the flow direction of the gas protection layer. The gas protection layer can slow down the airflow in the body part 11 and reduce or prevent the airflow in the body part 11. Direct impact on the surface of the volute tongue 14, thereby reducing or eliminating the larger noise caused by the larger impact.

The structural shape of the first deflector 20 may be determined according to actual needs, which is not limited in this embodiment of the present disclosure. In some examples, the cross section of the first deflector 20 may be straight as shown in FIG. 2 , V-shaped as shown in FIG. 3 , arcuate or triangular as shown in FIG. 4 . Here, the cross section of the first deflector 20 is a cross section taken by a plane perpendicular to the axial direction of the volute body 10, and the axial direction of the volute body 10 may be the central axis of the annular channel of the volute body 10. Direction, that is, the axial direction of the fan blade. As shown in FIG. 3 , for example, the pointed portion of the V shape may be located at one end close to the cochlear tongue 14 , and the opening may be located at the end far away from the cochlear tongue 14 . As shown in FIG. 4 , for example, the dorsal of the arcuate shape may remain opposite to the opposite side, and the bowstring may remain opposite to the cochlear lingual side.

In some examples, the first deflector 20 and the side wall of the outlet portion 12 connected to the volute tongue 14 , that is, the volute tongue side 121 are arranged in parallel. Here, the parallel arrangement may be absolutely parallel or substantially parallel. In the parallel arrangement mode, the first flow guide 20 can form a relatively large opposing flow near the volute tongue 14 to protect the volute tongue 14 .

As shown in FIG. 5 , in some examples, a bent portion 21 may be provided on the end of the first air guide 20 close to the volute tongue 14 , and the bent portion 21 is used to block the airflow in the body portion 11 striking the volute tongue. By using the bent portion 21 , the first flow guiding member 20 can form a large opposing flow near the volute tongue 14 to protect the volute tongue 14 . The size of the bent portion 21 may be determined according to actual needs, which is not limited in this embodiment of the present disclosure. Exemplarily, the bending radius of the bending portion 21 may be smaller than the bending radius of the volute tongue 14 . Exemplarily, the bending radius of the volute tongue 14 may be the radius of the tongue top of the volute tongue 14 .

Exemplarily, the first deflector 20 may be provided with a bent portion 21 and have a tongue-like structure, and the first deflector 20 and the volute tongue 14 are arranged in parallel. In other words, the first deflector 20 and the volute tongue 14 have basically the same tongue-shaped structure, the top of the tongue of the first deflector 20 and the tongue top of the volute tongue 14 are arranged oppositely, and the corresponding structural regions of the two tongue-shaped structures are mutually parallel. In this way, the first deflector 20 can use its own tongue-shaped structure to divide the air reaching the connecting area between the main body portion 11 and the outlet portion 12, so that most of the air can enter the air outlet chamber 12a for exhaust, and a small part The air flows back into the main body portion 11 , and returns to the first air guide member 20 to participate in a new split after rotating once in the main body portion 11 with the blades. Compared with the method of using the volute tongue 14 to divide the flow, the first air guide 20 is located on the side of the volute tongue 14 close to the opposite side 122, so that the gap between the first air guide 20 and the fan blade is larger than that between the volute tongue 14 and the fan blade. The gap between them increases the efficiency, reduces the noise, and increases the comfort of use by increasing the gap. In addition, part of the air guided from the first deflector 20 to the air outlet cavity 12a may flow along the surface of the tongue-shaped structure to the input end of the return air cavity 12b, and then flow back. The size of the tongue-shaped structure of the first deflector 20 may be determined according to actual needs, which is not limited in the embodiment of the present disclosure. In some examples, the tongue crest radius of the tongue configuration of the first flow guide 20 may be smaller than the tongue crest radius of the volute tongue 14 .

As shown in FIG. 6 , in some other embodiments, the first deflector 20 may be disposed in the body portion 11 . A cavity 15 is formed between the first deflector 20 and the volute tongue 14 . The air pressure at the end of the cavity 15 away from the outlet 12 is lower than the air pressure at the end of the cavity 15 near the outlet 12 to form a counter-flow. The structural shape of the first deflector 20 may be determined according to actual needs, which is not limited in this embodiment of the present disclosure. In some examples, the cross section of the first deflector 20 may be circular or elliptical. Here, the cross section of the first deflector 20 is a cross section taken by a plane perpendicular to the axial direction of the volute body 10, and the axial direction of the volute body 10 may be the central axis of the annular channel of the volute body 10. Direction, that is, the axial direction of the fan blade.

As shown in Fig. 1 and Fig. 9, in some embodiments, the volute tongue body may have a front side wall 10a and a rear side wall 10b oppositely arranged along its axial direction. Here, the axial direction of the volute body 10 may be the central axis of the annular channel of the volute body 10 . The front side wall 10a connects the volute lingual side 121 and the opposite side 122, and the rear side wall 10b also connects the volute lingual side 121 and the opposite side 122, and the two ends of the first deflector 20 are respectively connected to the front side wall 10a and the rear side wall 10b. . In this way, along the vertical direction of the extension direction of the outlet portion 12, the air outlet cavity 12a and the return air cavity 12b are kept isolated in the flow section, and only communicate at both ends, so as to avoid flow between the air outlet cavity 12a and the return air cavity 12b Mutual interference of directions ensures the air outlet effect of the air outlet chamber 12a and the return air effect of the air return chamber 12b.

As mentioned above, the body part 11 can be configured to accommodate the fan blades and define the volute flow channel 13 with the fan blades, and the outlet section 131 of the volute flow channel 13 is connected to the outlet part 12 along its air flow direction; here, the volute The flow channel 13 is the aforementioned annular flow channel. As shown in FIG. 1 , FIG. 7 and FIG. 9 , in some embodiments, the volute structure 1 may further include a second flow guide 30 . The second flow guide 30 is at least partially disposed on the outlet section 131 of the volute flow channel 13 , and the part of the second flow guide 30 located in the outlet section 131 extends to the first flow guide 20 along the extending direction of the outlet section 131 nearby area.

In this way, the second air guide 30 can divide and guide the air that is about to be discharged to the outlet portion 12 in the outlet section 131, so that most of the air can flow in the area on the side of the second air guide 30 away from the blades. Sequentially enter the air outlet cavity 12a of the outlet portion 12 to meet the demand for large air volume; a small amount of air can flow in the area between the second air guide 30 and the fan blades, and sequentially reach the location of the first air guide 20 , and then under the flow guide action of the first air guide 20, most of the air is shunted into the air outlet cavity 12a, and a small amount of air enters the area between the fan blade and the volute tongue 14, reducing the occurrence of shunting at the first air guide 20 The air volume and the impact that the first air guide 20 and the volute tongue 14 may receive, thereby reducing the air duct noise.

As mentioned above, the second flow guide 30 is at least partially disposed in the outlet section 131 of the volute flow channel 13 , that is, part or all of the second flow guide 30 is disposed in the outlet section 131 . In some examples, the second deflector 30 may be integrally disposed within the outlet section 131 . In some other examples, the second flow guide 30 may extend from the outlet section 131 to the upstream section 132 of the outlet section 131, so that the second flow guide 30 is partially disposed in the outlet section 131 to form the first flow guide. 31. Partially disposed in the upstream section 132 to form the second guide portion 32 . Here, the upstream section 132 and the outlet section 131 are sequentially connected along the air flow direction of the volute flow channel 13 . The second guide part 32 can extend along a first direction, and the first direction is parallel to the tangent plane of the upstream section 132 at the junction of the outlet section 131, so that the air divided by the second guide part 30 can flow along the upstream section 132. 132 enters the outlet section 131 tangentially at the connection between it and the outlet section 131, the flow direction of the air will not change significantly before and after splitting, the splitting effect is relatively smooth, and the disturbance noise during splitting can be reduced.

In some examples, the volute body 10 may have a front side wall 10a and a rear side wall 10b oppositely disposed along its axial direction, and the second flow guide 30 may be disposed in one of the front and rear side walls, and the second flow guide There is a gap between member 30 and the other of the front and rear side walls. In this way, the area on the side of the second air guide 30 away from the blade and the area on the side of the second air guide 30 close to the blade will not be completely isolated; along with the direction of air flow, under the centrifugal action of the blade, The air in the area on the side of the second air guide 30 close to the blades can continuously enter the area on the side of the second air guide 30 away from the blades. Correspondingly, the air volume entering the air outlet chamber 12a from the area on the side of the second air guide 30 away from the blades is gradually increased, which can meet the demand for large air volume, and at the same time increase the air volume adjacent to the return air chamber 12b in the air outlet chamber 12a. The air in the area, so that the air pressure at the input end of the return air chamber 12b increases synchronously; while the air volume from the area on the side of the second air guide 30 close to the fan blades to the first air guide 20 gradually decreases. On the one hand, it can Reduce the amount of air split at the first air guide 20 and the impact that the first air guide 20 and the volute tongue 14 may receive, thereby reducing the noise of the air duct. On the other hand, it can reduce the air flow at the first air guide 20. , so that the air pressure at the output end of the return air chamber 12b decreases synchronously. As the air pressure at the input end of the return air chamber 12b increases and the air pressure at the output end decreases, the pressure difference between the two ends of the return air chamber 12b can be enlarged, so that the air in the area of the air outlet chamber 12a adjacent to the return air chamber 12b can quickly and reliably pass through the return air. The cavity 12b carries out backflow, protects the surface of the volute tongue 14, reduces or prevents the direct impact of the airflow in the body part 11 on the surface of the volute tongue 14, thereby reducing or eliminating the loud noise caused by the large impact.

Exemplarily, the orthographic projection of the second deflector 30 on the axial plane of the blade partially overlaps with the blade. In this way, it can be ensured that the air sent out by the fan blades through the centrifugal force can contact the second air guiding member 30 , and play the role of guiding air of the second air guiding member 30 . Here, the air volume at both sides of the second air guide 30 can be controlled by adjusting the orthographic projection of the second air guide 30 on the axial plane of the fan blade and the area of the overlapping area of the fan blade.

In some examples, the body portion 11 has a circumferential wall 111 surrounding the fan blade; the distance between the first air guide 20 and the opposite side 122 is a first distance, and the portion of the circumferential wall 111 located at the outlet section 131 and the second air guide The distance between 30 is the second distance. Here, the first distance may be greater than the second distance. In this way, the area on the side of the second air guide 30 away from the fan blade and the first air guide 20 can be kept staggered, so that the air in this area can quickly and accurately enter the air outlet cavity 12a; The area of the element 30 near the side of the fan blade and the first air guide 20 can be kept opposite, so that the air in this area can quickly and accurately contact the first air guide 20, and better play the role of the first air guide 20 in diverting air. .

In some examples, the body portion 11 has a circumferential wall 111 surrounding the blades; along the direction from the outlet segment 131 to the outlet portion 12 , the portion of the peripheral wall 111 located at the outlet segment 131 is inclined toward the side of the tangential plane approaching the blades. In this way, the outlet section 131 can be inclined to the volute tongue side 121 as a whole, so that the wind outlet effect and the noise reduction effect are better.

In some examples, the body portion 11 has a circumferential wall 111 surrounding the blade, and a portion of the circumferential wall 111 located at the outlet section 131 and the opposite side 122 are coplanar. In this way, the side wall of the outlet section 131 away from the blade and the opposite side 122 of the outlet section 12 are coplanar and smoothly connected, so that the air in the outlet section 131 can flow into the outlet section 12 smoothly, reducing or eliminating the outlet section 131 and the opposite side 122 of the outlet section 12. Possible shocks to the connection area of the outlet portion 12 reduce or eliminate the resulting shock noise.

The disposition manner of the first deflector 20 on the volute body 10 may be determined according to actual needs, which is not limited in the embodiments of the present disclosure. In some embodiments, the first deflector 20 may be integrally formed with the volute body 10 . In some other embodiments, the first deflector 20 can be formed separately and then installed on the volute body 10 .

The disposition manner of the second deflector 30 on the volute body 10 may be determined according to actual needs, which is not limited in the embodiment of the present disclosure. In some examples, the second deflector 30 may be integrally formed with the volute body 10 . In some other examples, the first deflector 20 may be formed separately and then installed on the volute body 10 .

The structure of the cochlear tongue 14 can be determined according to actual needs, such as flat tongue, short tongue, deep tongue, sharp tongue, etc., which are not limited in the embodiments of the present disclosure. Exemplarily, the volute tongue 14 may have an inclined volute tongue structure. The inclined volute tongue structure is a volute tongue structure with a certain inclination angle, which is the angle between the line connecting the midpoint of the large circle arc and the small circle arc midpoint of the volute tongue 14 and the projection line of the line, so that the volute The spacing between the small circle of the tongue 14 and the fan blade changes. When the air is divided in the volute tongue 14, the inclined volute tongue structure can make the time for the air in different regions to reach the corresponding position on the volute tongue 14 to be different, so as to avoid the large noise generated by the air impacting the volute tongue 14 at the same time and the noise superposition and enhancement, reducing the Noise generated by the diversion process.

The structural form of the volute body 10 can be determined according to actual needs, and structural forms such as integral structure and split structure can be adopted, which are not limited in the embodiments of the present disclosure. In some embodiments, the volute body 10 may include a first volute member 10 ′ and a second volute member 10 ″, and the first volute member 10 ′ and the second volute member 10 ″ are relatively connected to form a volute. Body 10; the volute body 10 with split structure is relatively easy to manufacture, which can reduce manufacturing difficulty and production cost. Exemplarily, the volute tongue 14 may have a split splicing structure, which is formed by splicing parts respectively formed on the first volute member 10 ′ and the second volute member 10 ″.

As shown in FIG. 8 , in some embodiments, the volute structure 1 may further include a guide ring 16 disposed in the body portion 11 , the guide ring 16 includes an expansion section 161 opposite to the volute tongue 14 , and the expansion section 161 The distance between it and the volute tongue 14 is greater than the minimum distance between the guide ring 16 and the peripheral wall 111 . In this way, the smallest gap region between the guide ring 16 and the circumferential wall 111 can be avoided near the volute tongue 14, so that there is a larger gap between the expansion section 161 and the volute tongue 14, thereby reducing the flow velocity and impact force in the vicinity of the volute tongue 14 , thereby reducing or eliminating the larger noise caused by larger impacts. In some examples, the guide ring 16 further includes an arc segment 162, and the two ends of the expansion segment 161 are respectively connected with the arc segment 162 to form a complete ring body. The expansion segment 161 is located inside the circle where the arc segment 162 is located, for example The expansion section 161 can be realized by the chord of the circle where the arc section 162 is located, increasing the distance between the expansion section 161 and the volute tongue 14 to reduce impact and impact noise.

As shown in FIGS. 1 to 10 , in a second aspect, the embodiment of the present disclosure provides an air duct component 100 , which includes the volute structure 1 and the centrifugal fan 2 provided in any of the above embodiments. The centrifugal vane 2 is disposed in the main body 11 , and the main body 11 and the centrifugal vane 2 define a volute flow channel 13 . The type of the air duct component 100 may be determined according to actual needs, and may be an indoor air duct component, a fresh air duct component, etc., which is not limited in this embodiment of the present disclosure.

In some embodiments, the air duct component 100 may further include an air intake cover 3 . The air intake cover 3 communicates with the inlet of the volute body 10 . The air intake cover 3 can introduce air into the volute body 10 ; for example, when the air duct component 100 is a fresh air duct component, the air intake cover 3 can communicate with the outdoor environment and introduce outdoor fresh air into the volute body 10 . In some embodiments, the air duct component 100 can also include a filter screen frame 4 for installing a filter screen, and the filter screen frame 4 can be arranged between the air intake cover 3 and the volute body 10; the filter screen can filter the air , Improve air quality.

In a third aspect, the embodiments of the present disclosure provide an air conditioner, which includes the air duct component 100 provided in any of the above embodiments. Here, the type of the air conditioner may be determined according to actual needs, such as a cabinet type air conditioner, a hanging air conditioner, etc., which are not limited in this embodiment of the present disclosure.

The volute structure, air duct components and air conditioner provided by the embodiments of the present disclosure have been described above in detail. In this paper, specific examples have been used to illustrate the principles and implementation methods of the present disclosure. The descriptions of the above embodiments are only used to help Understand the method and its core idea of the present disclosure; at the same time, for those skilled in the art, according to the idea of the present disclosure, there will be changes in the specific implementation and application range. In summary, the content of this specification should not construed as limitations on the present disclosure.

Claims

A volute structure comprising:

The volute body has a body part and an outlet part, and a volute tongue is formed at the connection between the body part and the outlet part;

The first deflector, which is arranged in the body part and/or the outlet part, is used to form a counter air flow opposite to the air outlet direction of the body part at a position close to the volute tongue, so as to block all The airflow impacting the volute tongue in the body.
According to the volute structure according to claim 1, the first air guide is arranged in the outlet part, and divides the outlet part into an air outlet cavity and a return air cavity, and the return air cavity is close to the volute. The air pressure at one end of the tongue is greater than the air pressure at the end of the air return cavity away from the volute tongue, so as to form the counter-airflow.
According to the volute structure according to claim 2, the cross-section of the first guide member is linear, V-shaped, arcuate or triangular in shape.
According to the volute structure according to claim 3, the first flow guiding member is arranged parallel to the side wall of the outlet portion connected to the volute tongue.
According to the volute structure according to claim 3 or 4, the first deflector is provided with a bent part at an end close to the volute tongue, and the bent part is used to prevent the inside of the main body from impacting the volute Tongue airflow.
According to the volute structure according to claim 5, the bending radius of the bending portion is smaller than the bending radius of the volute tongue.
According to the volute structure according to claim 1, the first air guiding member is arranged in the body part to at least partially block the air flow in the body part striking the volute tongue.
According to the volute structure according to claim 7, a cavity is formed between the first deflector and the volute tongue, and the air pressure at the end of the cavity away from the outlet is lower than that of the cavity close to the Air pressure at one end of the outlet section to form the opposing airflow.
According to the volute structure according to claim 7 or 8, the cross-section of the first guide member is circular or elliptical.
The volute structure according to claim 1, further comprising a second flow guide, the body portion has an outlet section connected to the outlet portion, and the second flow guide is at least partially disposed on the outlet section , the part of the second flow guide located in the outlet section extends to the vicinity of the first flow guide along the extension direction of the outlet section.
According to the volute structure according to claim 10, the second flow guide extends from the outlet section to the upstream section of the outlet section, and the part of the second flow guide located in the upstream section extending in a first direction parallel to a tangent plane of the upstream section at its junction with the outlet section;

And/or, the volute body has front and rear sidewalls oppositely arranged along its axial direction, the second flow guide is arranged in one of the front and rear sidewalls, the second flow guide and the There is a gap between the other one of the front and rear side walls; the orthographic projection of the second deflector on the axial plane of the fan blade partially overlaps with the fan blade;

And/or, the body portion has a circumferential wall surrounding the blade, the outlet portion has a volute tongue side and an opposite side, the volute tongue side is connected to the volute tongue, and the first deflector and The distance between the opposite sides is a first distance, the distance between the part of the peripheral wall located at the outlet section and the second flow guide is a second distance, and the first distance is greater than the first distance. two distances;

And/or, the body portion has a circumferential wall surrounding the fan blade, and along the direction from the outlet section approaching the outlet portion, a part of the circumferential wall located at the outlet section approaches the fan blade toward the tangential plane one side is tilted.
According to the volute structure according to claim 1, the body part has an outlet section connected to the outlet part and a circumferential wall surrounding the blade, the outlet part has a volute tongue side and an opposite side arranged oppositely, the volute The lingual side is connected to the volute tongue, and the portion of the peripheral wall located at the outlet section is coplanar with the opposite side.
An air duct component, comprising:

The volute structure according to any one of claims 1-12;

The centrifugal vane is arranged in the body part, and the main body part and the centrifugal vane define a volute flow channel.
An air conditioner, comprising the air duct component according to claim 13.