WO2023103118A1 - Structure de volute, composant de conduit d'air et climatiseur - Google Patents

Structure de volute, composant de conduit d'air et climatiseur Download PDF

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Publication number
WO2023103118A1
WO2023103118A1 PCT/CN2021/142237 CN2021142237W WO2023103118A1 WO 2023103118 A1 WO2023103118 A1 WO 2023103118A1 CN 2021142237 W CN2021142237 W CN 2021142237W WO 2023103118 A1 WO2023103118 A1 WO 2023103118A1
Authority
WO
WIPO (PCT)
Prior art keywords
volute
air
outlet
tongue
volute tongue
Prior art date
Application number
PCT/CN2021/142237
Other languages
English (en)
Chinese (zh)
Inventor
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 (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tcl空调器(中山)有限公司 filed Critical Tcl空调器(中山)有限公司
Publication of WO2023103118A1 publication Critical patent/WO2023103118A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence

Definitions

  • 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.
  • 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.
  • the air duct of the air conditioner is noisy, which reduces the use comfort.
  • 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.
  • 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.
  • the cross-section of the first air guide is straight, V-shaped, arcuate or triangular.
  • the first deflector is arranged parallel to a side wall of the outlet portion connected to the volute tongue.
  • 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.
  • the bending radius of the bending portion is smaller than the bending radius of the volute tongue.
  • 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.
  • 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.
  • the cross section of the first deflector is circular or elliptical.
  • 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.
  • 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.
  • 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.
  • 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
  • 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
  • the first distance is greater than the Describe the second distance.
  • 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.
  • 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.
  • 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.
  • an embodiment of the present disclosure provides an air conditioner, including the air duct component described in any one of the above embodiments.
  • 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.
  • 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.
  • 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.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of said features.
  • “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 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.
  • 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.
  • 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.
  • the air duct noise of the air conditioner adopting the centrifugal fan is relatively large, which reduces the use comfort.
  • 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.
  • 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.
  • the air duct noise of the air conditioner adopting the centrifugal fan is relatively large, which reduces the use comfort.
  • 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 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 .
  • volute structure 1 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the air pressure at the input end of the return air cavity 12b is greater than the air pressure at the output end thereof.
  • 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.
  • 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
  • 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.
  • 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 .
  • 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.
  • 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 .
  • 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.
  • 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 .
  • the dorsal of the arcuate shape may remain opposite to the opposite side, and the bowstring may remain opposite to the cochlear lingual side.
  • the first deflector 20 and the side wall of the outlet portion 12 connected to the volute tongue 14 are arranged in parallel.
  • the parallel arrangement may be absolutely parallel or substantially parallel.
  • the first flow guide 20 can form a relatively large opposing flow near the volute tongue 14 to protect the volute tongue 14 .
  • 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.
  • 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.
  • the bending radius of the bending portion 21 may be smaller than the bending radius of the volute tongue 14 .
  • the bending radius of the volute tongue 14 may be the radius of the tongue top of the volute tongue 14 .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 .
  • 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.
  • the cross section of the first deflector 20 may be circular or elliptical.
  • 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.
  • the volute tongue body may have a front side wall 10a and a rear side wall 10b oppositely arranged along its axial direction.
  • 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
  • the rear side wall 10b also connects the volute lingual side 121 and the opposite side 122
  • the two ends of the first deflector 20 are respectively connected to the front side wall 10a and the rear side wall 10b.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 .
  • the second deflector 30 may be integrally disposed within the outlet section 131 .
  • 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 .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the air pressure at the output end of the return air chamber 12b decreases synchronously.
  • 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.
  • 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 .
  • 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.
  • 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.
  • the first distance may be greater than the second distance.
  • 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. .
  • 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.
  • 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.
  • the first deflector 20 may be integrally formed with the volute body 10 .
  • 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.
  • the second deflector 30 may be integrally formed with the volute body 10 .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 ′′.
  • 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.
  • 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.
  • 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.
  • 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 .
  • 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.
  • the embodiments of the present disclosure provide an air conditioner, which includes the air duct component 100 provided in any of the above embodiments.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une structure de volute (1) comprenant : un corps de volute (10) ayant une partie corps (11) et une partie sortie (12), une languette de volute (14) étant formée au niveau d'un emplacement de raccordement entre la partie corps (11) et la partie sortie (12) ; et un premier élément de guidage de courant (20), disposé dans la partie corps (11) et/ou la partie sortie (12) et utilisé pour former, au niveau d'une position proche de la languette de volute (14), un contre-courant d'air opposé à une direction de sortie d'air de la partie corps (11), de façon à bloquer un courant d'air impactant la languette de volute (14) dans la partie corps (11).
PCT/CN2021/142237 2021-11-30 2021-12-28 Structure de volute, composant de conduit d'air et climatiseur WO2023103118A1 (fr)

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CN202111449951 2021-11-30
CN202111494159.X 2021-12-08
CN202111494159.XA CN114962335A (zh) 2021-11-30 2021-12-08 蜗壳结构、风道部件和空调器

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WO2023103118A1 true WO2023103118A1 (fr) 2023-06-15

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CN216691607U (zh) * 2021-11-30 2022-06-07 Tcl空调器(中山)有限公司 蜗壳结构、风道部件和空调器

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