CN116517883A - Volute, fan and air conditioner - Google Patents

Volute, fan and air conditioner Download PDF

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Publication number
CN116517883A
CN116517883A CN202310615109.5A CN202310615109A CN116517883A CN 116517883 A CN116517883 A CN 116517883A CN 202310615109 A CN202310615109 A CN 202310615109A CN 116517883 A CN116517883 A CN 116517883A
Authority
CN
China
Prior art keywords
equal
volute
fan blade
air duct
less
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202310615109.5A
Other languages
Chinese (zh)
Inventor
王千千
魏彦艳
钟定菡
夏光辉
林金煌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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 Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202310615109.5A priority Critical patent/CN116517883A/en
Publication of CN116517883A publication Critical patent/CN116517883A/en
Pending legal-status Critical Current

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/422—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans

Abstract

The invention provides a volute, a fan and an air conditioner, wherein the volute comprises: the volute comprises a volute body, a first air channel part and a second air channel part, wherein the volute body comprises a fan blade installation part for installing a fan blade assembly and two air channel parts which are arranged at two sides of the fan blade installation part at intervals along a first direction; a first air channel molded line and a second air channel molded line are respectively formed between the opposite sides of each air channel part, which are arranged at intervals along the second direction, and the fan blade mounting parts, which are arranged at intervals along the second direction, are in streamline form; convex hulls are arranged on two opposite sides of at least one air channel part, which are arranged at intervals along the rotation axis of the fan blade assembly; the first direction and the second direction are mutually perpendicular and are perpendicular to the rotation axis of the fan blade assembly, so that the problems that in the prior art, the fan efficiency of the single-centrifugal double-suction fan is low and discontinuous pneumatic noise exists at the outlet of the volute are solved.

Description

Volute, fan and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a volute, a fan and an air conditioner.
Background
At present, the distributed air supply technology has achieved higher acceptance in the air conditioning market, but due to the higher cost of the technology, the technology is mainly applied to high-end products, which results in insufficient market competitiveness.
Through long-term researches, the distributed air supply technology is reduced from the original three fans to a single centrifugal fan with the same technical effect, and a great breakthrough is made in the aspects of cost reduction and synergy.
However, because the single centrifugal distributed air supply system has the problems of larger transverse size and lower fan efficiency, the fan performance still has larger lifting space, and in order to make a greater breakthrough in the goals of cost reduction and synergy, the development of a single centrifugal distributed air supply system with higher competitive power is needed.
Because the double-suction centrifugal fan has the characteristics of larger flow coefficient and good noise tone quality, a brand new single-centrifugal double-suction fan is selected and researched and developed to improve the performance of the centrifugal fan and realize further cost reduction and synergy.
However, the high-pressure air flow at the air outlet of the double-suction volute is easy to flow back, so that vortex loss and backflow loss are easy to generate in the volute, the efficiency of the fan is reduced, and discontinuous pneumatic noise exists at the outlet of the volute, so that the tone quality of the air conditioner is poor.
Disclosure of Invention
The invention mainly aims to provide a volute, a fan and an air conditioner, so as to solve the problems that in the prior art, the fan efficiency of a single-centrifugal double-suction fan is low and discontinuous pneumatic noise exists at the outlet of the volute.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a scroll casing including: the spiral case body comprises a fan blade installation part for installing the fan blade assembly and two air duct parts which are arranged at two sides of the fan blade installation part along the first direction at intervals and are communicated with the fan blade installation part, and the fan blade installation part is used for installing the fan blade assembly; a first air channel molded line and a second air channel molded line are respectively formed between the opposite sides of each air channel part, which are arranged at intervals along the second direction, and the fan blade mounting parts, which are arranged at intervals along the second direction, are in streamline form; the two opposite sides of at least one air channel part, which are arranged at intervals along the rotation axis of the fan blade assembly, are provided with convex hulls protruding towards the direction away from the corresponding air channel part; the first direction and the second direction are perpendicular to each other and perpendicular to the rotation axis of the fan blade assembly.
Further, the convex hull includes: the upper surface is arranged at intervals with the air channel part; the first side surface and the second side surface are respectively positioned on two opposite sides of the upper surface which are arranged at intervals along the extending direction of the air channel part, the first side surface is positioned on one side of the upper surface which is far away from the fan blade mounting part, and the second side surface is positioned on one side of the upper surface which is close to the fan blade mounting part; the third side surface and the fourth side surface are respectively positioned on two opposite sides of the upper surface which are arranged at intervals along the direction perpendicular to the extending direction of the air channel part, the third side surface is positioned on one side of the upper surface which is close to the first air channel molded line, and the fourth side surface is positioned on one side of the upper surface which is close to the second air channel molded line; wherein the upper surface is connected with the outer surface of the air channel part through the first side surface, the second side surface, the third side surface and the fourth side surface.
Further, an inner wall surface of the convex hull on a side close to the volute tongue is connected with an inner wall surface of the volute casing body on a side close to the volute tongue.
Further, the calculation formula of the first air duct molded line is: y=a 2 +(A 1 -A 2 )/(1+exp((x-x 0 ) /p); wherein A is 1 ＝-4.87548±1.01258；A 2 ＝138.4272±1.22718；x 0 = 196.19628 ± 1.3696; p= 55.53854 ± 1.52501; x is a straight line parallel to the second direction and passing through the rotation axis of the fan blade assembly and is close to the first air channel with the volute bodyThe intersection point of one side of the molded line is used as a starting point, and the dimension of the molded line of the first air channel in the second direction; and y is the size of the first air duct molded line in the first direction by taking the rotation axis of the fan blade assembly as a starting point.
Further, the calculation formula of the second air duct molded line is: l= (0.3-0.6) L arc sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second air duct profile.
Further, the minimum distance between the convex hull and the volute tongue is c, wherein c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull in the extending direction of the air channel part is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull in the direction perpendicular to the extending direction of the air channel part is b, wherein b is more than or equal to 65mm and less than or equal to 75mm; the height of the convex hull in the direction parallel to the rotation axis of the fan blade component is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
Further, the included angle between the upper surface and the first side surface is beta, wherein beta is more than or equal to 15 degrees and less than or equal to 25 degrees; the included angle between the upper surface and the second side surface is alpha, wherein alpha is more than or equal to 30 degrees and less than or equal to 40 degrees; the included angle between the upper surface and the fourth side surface is gamma, wherein gamma is more than or equal to 40 degrees and less than or equal to 50 degrees.
Further, an inner wall surface of the convex hull on a side far away from the volute tongue is connected with an inner wall surface of the volute casing body on a side far away from the volute tongue.
Further, the calculation formula of the second air duct molded line is: l= (1.8-2.5) L sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second air duct profile.
Further, the minimum distance between the convex hull and the volute tongue is c, wherein c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull in the extending direction of the air channel part is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull in the direction perpendicular to the extending direction of the air channel part is b, wherein b is more than or equal to 85mm and less than or equal to 95mm; the height of the convex hull in the direction parallel to the rotation axis of the fan blade component is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
Further, gaps are reserved between two inner wall surfaces of the convex hulls, which are respectively close to the first air duct molded line and the second air duct molded line, and the inner wall surface of the volute body.
Further, the calculation formula of the second air duct molded line is: l= (1.8-2.5) L sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second air duct profile.
Further, the minimum distance between the convex hull and the volute tongue is c, wherein c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull in the extending direction of the air channel part is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull in the direction perpendicular to the extending direction of the air channel part is b, wherein b is more than or equal to 50mm and less than or equal to 60mm; the height of the convex hull in the direction parallel to the rotation axis of the fan blade component is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
According to a second aspect of the present invention, there is provided a fan comprising the above-described volute and a fan blade assembly disposed within the volute.
According to a third aspect of the present invention, there is provided an air conditioner including the blower described above.
By applying the technical scheme of the invention, the volute comprises: the spiral case body comprises a fan blade installation part for installing the fan blade assembly and two air duct parts which are arranged at two sides of the fan blade installation part along the first direction at intervals and are communicated with the fan blade installation part, and the fan blade installation part is used for installing the fan blade assembly; a first air channel molded line and a second air channel molded line are respectively formed between the opposite sides of each air channel part, which are arranged at intervals along the second direction, and the fan blade mounting parts, which are arranged at intervals along the second direction, are in streamline form; the two opposite sides of at least one air channel part, which are arranged at intervals along the rotation axis of the fan blade assembly, are provided with convex hulls protruding towards the direction away from the corresponding air channel part; the first direction and the second direction are perpendicular to each other and perpendicular to the rotation axis of the fan blade assembly. Therefore, the volute of the invention improves the air quantity of the double-suction single-centrifugal fan, improves the phenomenon of uneven air flow velocity distribution of the air channels, reduces the pneumatic noise of the double-suction single-centrifugal fan, improves the working performance of the centrifugal fan, adjusts the flow direction of air outlet air flow, can effectively inhibit the air flow backflow phenomenon under different air sense modes, effectively reduces the vortex in the air channels, reduces the air flow loss, improves the noise problems of surge, discontinuous air flow and the like of the air outlet air channels, improves the comfort experience of users, and solves the problems of lower fan efficiency and discontinuous pneumatic noise at the outlet of the volute of the single-centrifugal double-suction fan in the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a simplified schematic of an embodiment of a volute according to the invention, labeled with a part of a reference numeral;
FIG. 2 shows a simplified schematic of the embodiment of the volute of FIG. 1, labeled with another partial reference numeral;
fig. 3 shows a partial enlarged view of the volute of fig. 2 at P;
FIG. 4 shows a close-up view of the convex hull of the volute of FIG. 1;
FIG. 5 illustrates a schematic structural view of a blower having the volute of FIG. 1;
FIG. 6 shows the airflow profile of the air duct portion of a prior art volute;
FIG. 7 illustrates the airflow profile of the air channel portion of the embodiment of the volute of FIG. 1;
fig. 8 shows a cross-sectional view of the airflow velocity distribution of the air channel portion of the scroll case in the related art;
fig. 9 shows a cross-sectional view of the airflow velocity distribution of the air channel portion of the embodiment of the volute of fig. 1.
Wherein the above figures include the following reference numerals:
1. a volute body; 2. a fan blade assembly; 3. a fan blade mounting part; 4. an air channel part; 5. a first air duct profile; 6. a second air duct molded line; 7. a volute tongue;
8. convex hulls; 81. an upper surface; 82. a first side; 83. a second side; 84. a third side; 85. and a fourth side.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 5, the present invention provides a volute including: the spiral case body 1, the spiral case body 1 includes a fan blade installation part 3 for installing the fan blade assembly 2 and two air channel parts 4 which are arranged at two sides of the fan blade installation part 3 along the first direction at intervals and are communicated with the fan blade installation part 3, and the fan blade installation part 3 is used for installing the fan blade assembly 2; a first air channel molded line 5 and a second air channel molded line 6 are respectively formed between the opposite sides of each air channel part 4, which are arranged at intervals along the second direction, and the fan blade mounting part 3, and the connection part between one side of each air channel part 4, which is close to the first air channel molded line 5, and the fan blade mounting part 3 is in a streamline shape, and the connection part between one side of each air channel part 4, which is close to the second air channel molded line 6, and the fan blade mounting part 3 is a volute tongue 7; opposite sides of at least one air channel portion 4, which are arranged at intervals along the rotation axis of the fan blade assembly 2, are provided with convex hulls 8 protruding towards a direction away from the corresponding air channel portion 4; wherein, the first direction and the second direction are mutually perpendicular and are perpendicular to the rotation axis of the fan blade assembly 2.
In this way, the volute of the invention improves the air quantity of the double-suction single-centrifugal fan, improves the phenomenon of uneven air flow velocity distribution of the air channels, reduces the pneumatic noise of the double-suction centrifugal fan, improves the working performance of the centrifugal fan, adjusts the flow direction of the air outlet air flow, can effectively inhibit the air flow backflow phenomenon in different wind sensing modes, effectively reduces the vortex in the air channels, reduces the air flow loss, improves the noise problems of surging, discontinuous air flow and the like of the air outlet air channels, improves the comfort experience of users, and solves the problems of lower fan efficiency and discontinuous pneumatic noise at the outlet of the single-centrifugal double-suction fan in the prior art.
As shown in fig. 3 and 4, the convex hull 8 includes: an upper surface 81, the upper surface 81 being spaced apart from the air channel portion 4; the first side 82 and the second side 83, the first side 82 and the second side 83 are respectively located at two opposite sides of the upper surface 81 which are arranged at intervals along the extending direction of the air channel portion 4, the first side 82 is located at one side of the upper surface 81 away from the fan blade mounting portion 3, and the second side 83 is located at one side of the upper surface 81 close to the fan blade mounting portion 3; a third side surface 84 and a fourth side surface 85, the third side surface 84 and the fourth side surface 85 being respectively located on opposite sides of the upper surface 81 which are arranged at intervals in a direction perpendicular to the extending direction of the air channel portion 4, the third side surface 84 being located on one side of the upper surface 81 close to the first air channel molded line 5, the fourth side surface 85 being located on one side of the upper surface 81 close to the second air channel molded line 6; wherein the upper surface 81 is connected to the outer surface of the air channel portion 4 by a first side 82, a second side 83, a third side 84 and a fourth side 85.
In the first and second embodiments of the present invention, the inner wall surface of the convex hull 8 on the side close to the volute tongue 7 is connected with the inner wall surface of the volute body 1 on the side close to the volute tongue 7 to guide the airflow direction and reduce the mutual impact of the airflows, thereby reducing the vortex in the wind cavity and reducing the surge noise.
In the first embodiment of the present invention, the calculation formula of the first air duct profile 5 is: y=a 2 +(A 1 -A 2 )/(1+exp((x-x 0 ) /p); wherein A is 1 ＝-4.87548±1.01258；A 2 ＝138.4272±1.22718；x 0 = 196.19628 ± 1.3696; p= 55.53854 ± 1.52501; x is the size of the first air duct profile 5 in the second direction starting from the intersection point of a straight line parallel to the second direction and passing through the rotation axis of the fan blade assembly 2 and one side of the volute body 1 close to the first air duct profile 5; y is the dimension of the first wind channel profile 5 in the first direction starting from the axis of rotation of the fan blade assembly 2.
In the first embodiment of the present invention, the calculation formula of the second air duct profile 6 is: l= (0.3-0.6) L arc sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line 6 and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second tunnel profile 6.
In the first embodiment of the invention, the minimum distance between the convex hull 8 and the volute tongue 7 is c, wherein, c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull 8 in the extending direction of the air channel part 4 is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull 8 in the direction perpendicular to the extending direction of the air channel portion 4 is b, wherein b is more than or equal to 65mm and less than or equal to 75mm; the height of the convex hull 8 in the direction parallel to the rotation axis of the fan blade assembly 2 is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
In a first embodiment of the invention, the angle between the upper surface 81 and the first side 82 is beta, wherein 15 deg. beta.ltoreq.25; the included angle between the upper surface 81 and the second side surface 83 is alpha, wherein alpha is more than or equal to 30 degrees and less than or equal to 40 degrees; the angle between the upper surface 81 and the fourth side 85 is gamma, wherein gamma is 40 DEG-50 deg.
Like this, can effectively promote two-way centrifugal fan's performance, reduction in production cost, the air current flow direction in the air-out wind channel of adjustment can all be played under the wind sense mode of difference, promote the effect of fan amount of wind, under experience the condition that feel slightly poor aviation baffle is rear, also can suppress the air current phenomenon backward flow effectively to make the wind channel vortex reduce in, improved the air current flow field in the fan wind channel, reduced the pneumatic noise of fan, make the whole tone quality of fan better, promoted user's travelling comfort experience.
In the second embodiment of the present invention, the inner wall surface of the convex hull 8 on the side close to the volute tongue 7 is connected with the inner wall surface of the volute body 1 on the side close to the volute tongue 7, and the inner wall surface of the convex hull 8 on the side far from the volute tongue 7 is connected with the inner wall surface of the volute body 1 on the side far from the volute tongue 7, so as to adjust the flow direction of the air flow, reduce the mutual impact of the air flow, reduce the vortex in the air cavity, and further reduce the surge noise.
In the second embodiment of the present invention, the calculation formula of the second air duct profile 6 is: l= (1.8-2.5) L sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line 6 and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second tunnel profile 6.
In the second embodiment of the invention, the minimum distance between the convex hull 8 and the volute tongue 7 is c, wherein, c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull 8 in the extending direction of the air channel part 4 is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull 8 in the direction perpendicular to the extending direction of the air channel portion 4 is b, wherein b is more than or equal to 85mm and less than or equal to 95mm; the height of the convex hull 8 in the direction parallel to the rotation axis of the fan blade assembly 2 is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
In the third embodiment of the present invention, gaps are left between the two inner wall surfaces of the convex hull 8, which are respectively close to the first air duct molded line 5 and the second air duct molded line 6, and the inner wall surface of the volute main body 1, so as to adjust the airflow direction, reduce the mutual impact of the airflows, reduce the vortex in the air cavity, and further reduce the surge noise.
In the third embodiment of the present invention, the calculation formula of the second air duct profile 6 is: l= (1.8-2.5) L sin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line 6 and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second tunnel profile 6.
In the third embodiment of the invention, the minimum distance between the convex hull 8 and the volute tongue 7 is c, wherein, c is more than or equal to 0 and less than or equal to 5mm; the width of the convex hull 8 in the extending direction of the air channel part 4 is a, wherein a is more than or equal to 65mm and less than or equal to 75mm; the length of the convex hull 8 in the direction perpendicular to the extending direction of the air channel portion 4 is b, wherein b is more than or equal to 50mm and less than or equal to 60mm; the height of the convex hull 8 in the direction parallel to the rotation axis of the fan blade assembly 2 is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
As shown in fig. 5, the present invention provides a fan, which comprises the above-mentioned volute and a fan blade assembly 2 arranged in the volute.
Specifically, the air deflector is further arranged in the fan, and the rotating angle of the air deflector is controlled to enable the air deflector to tilt forwards to convey air flow obliquely or enable the air deflector to tilt backwards to press air flow downwards, so that various wind sensing experiences can be achieved.
The invention also provides an air conditioner comprising the fan.
As shown in fig. 6, the air flow distribution diagram of the air channel part of the volute in the prior art has vortex flow inside the air channel part, uneven flow field distribution, and is very easy to cause pneumatic noise, thereby affecting the performance and the overall sound quality of the fan, while as can be seen from the air flow distribution diagram of the air channel part of the volute in fig. 7, the volute in the invention greatly improves the problems.
As shown in fig. 8, in the airflow velocity distribution cross-section of the air channel part of the volute in the prior art, the airflow in the air channel can generate backflow, so that backflow loss is caused, on one hand, the air quantity is reduced, and the work efficiency of the volute is reduced; on the other hand, the backflow generates a large aerodynamic noise, and as can be seen from the air flow velocity distribution cross-sectional view of the air channel portion of the scroll case of the present invention shown in fig. 9, the scroll case of the present invention greatly improves the above-described problems.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
the volute of the present invention includes: the spiral case body 1, the spiral case body 1 includes a fan blade installation part 3 for installing the fan blade assembly 2 and two air channel parts 4 which are arranged at two sides of the fan blade installation part 3 along the first direction at intervals and are communicated with the fan blade installation part 3, and the fan blade installation part 3 is used for installing the fan blade assembly 2; a first air channel molded line 5 and a second air channel molded line 6 are respectively formed between the opposite sides of each air channel part 4, which are arranged at intervals along the second direction, and the fan blade mounting part 3, and the connection part between one side of each air channel part 4, which is close to the first air channel molded line 5, and the fan blade mounting part 3 is in a streamline shape, and the connection part between one side of each air channel part 4, which is close to the second air channel molded line 6, and the fan blade mounting part 3 is a volute tongue 7; opposite sides of at least one air channel portion 4, which are arranged at intervals along the rotation axis of the fan blade assembly 2, are provided with convex hulls 8 protruding towards a direction away from the corresponding air channel portion 4; wherein, the first direction and the second direction are mutually perpendicular and are perpendicular to the rotation axis of the fan blade assembly 2. In this way, the volute of the invention improves the air quantity of the double-suction single-centrifugal fan, improves the phenomenon of uneven air flow velocity distribution of the air channels, reduces the pneumatic noise of the double-suction centrifugal fan, improves the working performance of the centrifugal fan, adjusts the flow direction of the air outlet air flow, can effectively inhibit the air flow backflow phenomenon in different wind sensing modes, effectively reduces the vortex in the air channels, reduces the air flow loss, improves the noise problems of surging, discontinuous air flow and the like of the air outlet air channels, improves the comfort experience of users, and solves the problems of lower fan efficiency and discontinuous pneumatic noise at the outlet of the single-centrifugal double-suction fan in the prior art.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A volute, comprising:
the spiral case body (1), the spiral case body (1) comprises a fan blade installation part (3) for installing a fan blade assembly (2) and two air duct parts (4) which are arranged at two sides of the fan blade installation part (3) along a first direction at intervals and are communicated with the fan blade installation part (3), and the fan blade installation part (3) is used for installing the fan blade assembly (2);
a first air duct molded line (5) and a second air duct molded line (6) are respectively formed between the opposite sides of each air duct part (4) which are arranged at intervals along the second direction and the fan blade mounting part (3), the connection part between one side of each air duct part (4) which is close to the first air duct molded line (5) and the fan blade mounting part (3) is in streamline arrangement, and the connection part between one side of each air duct part (4) which is close to the second air duct molded line (6) and the fan blade mounting part (3) is a volute tongue (7);
opposite sides of at least one air channel part (4) which are arranged at intervals along the rotation axis of the fan blade assembly (2) are provided with convex hulls (8) which are protruded towards a direction away from the corresponding air channel part (4);
the first direction and the second direction are perpendicular to each other and perpendicular to the rotation axis of the fan blade assembly (2).
2. The volute of claim 1, wherein the convex hull (8) comprises:
an upper surface (81), the upper surface (81) being disposed at a distance from the air channel portion (4);
a first side surface (82) and a second side surface (83), wherein the first side surface (82) and the second side surface (83) are respectively positioned on two opposite sides of the upper surface (81) which are arranged at intervals along the extending direction of the air channel part (4), the first side surface (82) is positioned on one side of the upper surface (81) away from the fan blade mounting part (3), and the second side surface (83) is positioned on one side of the upper surface (81) close to the fan blade mounting part (3);
a third side surface (84) and a fourth side surface (85), the third side surface (84) and the fourth side surface (85) being respectively located on opposite sides of the upper surface (81) which are arranged at intervals in a direction perpendicular to the extending direction of the air channel portion (4), the third side surface (84) being located on one side of the upper surface (81) close to the first air channel molded line (5), the fourth side surface (85) being located on one side of the upper surface (81) close to the second air channel molded line (6);
wherein the upper surface (81) is connected to the outer surface of the air channel portion (4) through the first side surface (82), the second side surface (83), the third side surface (84), and the fourth side surface (85).
3. A volute according to claim 2, wherein the inner wall surface of the convex hull (8) on the side closer to the volute tongue (7) is connected to the inner wall surface of the volute body (1) on the side closer to the volute tongue (7).
4. A volute according to claim 3, characterized in that the calculation formula of the first air duct profile (5) is:
y＝A 2 +(A 1 -A 2 )/(1+exp((x-x 0 )/p))；
wherein, the liquid crystal display device comprises a liquid crystal display device,
A 1 ＝-4.87548±1.01258；
A 2 ＝138.4272±1.22718；
x 0 ＝196.19628±1.3696；
p＝55.53854±1.52501；
x is the size of the first air duct molded line (5) in the second direction by taking an intersection point of a straight line which is parallel to the second direction and passes through the rotating axis of the fan blade assembly (2) and one side, close to the first air duct molded line (5), of the volute body (1) as a starting point;
y is the size of the first air duct molded line (5) in the first direction by taking the rotation axis of the fan blade assembly (2) as a starting point.
5. The volute of claim 4, wherein the second air duct profile (6) is calculated by the formula:
l= (0.3-0.6) Larcsin θ; l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm; θ is an included angle between the extending direction of the second air duct molded line (6) and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees; l is the length of the second air duct molded line (6).
6. The volute of claim 4 or 5, wherein the flow path is defined by a flow path,
the minimum distance between the convex hull (8) and the volute tongue (7) is c, wherein c is more than or equal to 0 and less than or equal to 5mm;
the width of the convex hull (8) in the extending direction of the air channel part (4) is a, wherein a is more than or equal to 65mm and less than or equal to 75mm;
the length of the convex hull (8) in the direction perpendicular to the extending direction of the air channel part (4) is b, wherein b is more than or equal to 65mm and less than or equal to 75mm;
the height of the convex hull (8) in the direction parallel to the rotation axis of the fan blade assembly (2) is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
7. The volute of claim 6 wherein the flow path is defined by a flow path,
the included angle between the upper surface (81) and the first side surface (82) is beta, wherein beta is more than or equal to 15 degrees and less than or equal to 25 degrees;
an included angle between the upper surface (81) and the second side surface (83) is alpha, wherein alpha is more than or equal to 30 degrees and less than or equal to 40 degrees;
an included angle between the upper surface (81) and the fourth side surface (85) is gamma, wherein gamma is more than or equal to 40 degrees and less than or equal to 50 degrees.
8. A volute according to claim 3, characterized in that the inner wall surface of the convex hull (8) on the side facing away from the volute tongue (7) is connected to the inner wall surface of the volute body (1) on the side facing away from the volute tongue (7).
9. The volute of claim 8, wherein the second air duct profile (6) is calculated by the formula:
L＝(1.8～2.5)lsinθ；
wherein, the liquid crystal display device comprises a liquid crystal display device,
l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm;
θ is an included angle between the extending direction of the second air duct molded line (6) and the second direction; theta is more than or equal to 55 degrees and less than or equal to 65 degrees,
l is the length of the second air duct molded line (6).
10. The volute of claim 9 wherein the flow path is defined by a flow path,
the minimum distance between the convex hull (8) and the volute tongue (7) is c, wherein c is more than or equal to 0 and less than or equal to 5mm;
the width of the convex hull (8) in the extending direction of the air channel part (4) is a, wherein a is more than or equal to 65mm and less than or equal to 75mm;
the length of the convex hull (8) in the direction perpendicular to the extending direction of the air channel part (4) is b, wherein b is more than or equal to 85mm and less than or equal to 95mm;
the height of the convex hull (8) in the direction parallel to the rotation axis of the fan blade assembly (2) is h, wherein h is more than or equal to 8mm and less than or equal to 12mm.
11. The volute of claim 2, wherein a gap is left between two inner wall surfaces of the convex hull (8) near the first air duct profile (5) and the second air duct profile (6), respectively, and an inner wall surface of the volute body (1).
12. The volute of claim 11, wherein the second air duct profile (6) is calculated by the formula:
L＝(1.8～2.5)lsinθ；
wherein, the liquid crystal display device comprises a liquid crystal display device,
l is the total length of the air duct, and L is more than or equal to 300 and less than or equal to 400mm;
θ is an included angle between the extending direction of the second air duct molded line (6) and the second direction, and θ is more than or equal to 55 degrees and less than or equal to 65 degrees;
l is the length of the second air duct molded line (6).
13. The volute of claim 12 wherein the flow path is defined by a flow path,
the minimum distance between the convex hull (8) and the volute tongue (7) is c, wherein c is more than or equal to 0 and less than or equal to 5mm;
the width of the convex hull (8) in the extending direction of the air channel part (4) is a, wherein a is more than or equal to 65mm and less than or equal to 75mm;
the length of the convex hull (8) in the direction perpendicular to the extending direction of the air channel part (4) is b, wherein b is more than or equal to 50mm and less than or equal to 60mm;
the height of the convex hull (8) in the direction parallel to the rotation axis of the fan blade component (2) is h, wherein the height is 8mm
≤h≤12mm。
14. A fan comprising a volute according to any one of claims 1 to 13 and a fan blade assembly (2) arranged within the volute.
15. An air conditioner comprising the blower of claim 14.
CN202310615109.5A 2023-05-26 2023-05-26 Volute, fan and air conditioner Pending CN116517883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310615109.5A CN116517883A (en) 2023-05-26 2023-05-26 Volute, fan and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310615109.5A CN116517883A (en) 2023-05-26 2023-05-26 Volute, fan and air conditioner

Publications (1)

Publication Number Publication Date
CN116517883A true CN116517883A (en) 2023-08-01

Family

ID=87394207

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310615109.5A Pending CN116517883A (en) 2023-05-26 2023-05-26 Volute, fan and air conditioner

Country Status (1)

Country Link
CN (1) CN116517883A (en)

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