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WO2024192909A1 - 机头机构和风扇设备 - Google Patents

机头机构和风扇设备 Download PDF

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Publication number
WO2024192909A1
WO2024192909A1 PCT/CN2023/102391 CN2023102391W WO2024192909A1 WO 2024192909 A1 WO2024192909 A1 WO 2024192909A1 CN 2023102391 W CN2023102391 W CN 2023102391W WO 2024192909 A1 WO2024192909 A1 WO 2024192909A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
air inlet
head mechanism
plate
mechanism according
Prior art date
Application number
PCT/CN2023/102391
Other languages
English (en)
French (fr)
Inventor
杨涛
崔世强
郭润明
刘辉
饶马林
Original Assignee
广东美的环境电器制造有限公司
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 广东美的环境电器制造有限公司 filed Critical 广东美的环境电器制造有限公司
Publication of WO2024192909A1 publication Critical patent/WO2024192909A1/zh

Links

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal 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
    • 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
    • F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
    • 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
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Definitions

  • the present application relates to the field of fan technology, and in particular to a head mechanism and a fan device.
  • the circulation fan will generate negative pressure during operation, thereby achieving air inflow.
  • the surface of the air inlet of most product structures is perpendicular to the air inlet direction, resulting in the air directly flowing into the air inlet and hitting the solid wall surface, thereby generating noise and abnormal sound.
  • the present application aims to solve at least one of the technical problems existing in the prior art or related art.
  • an embodiment of the first aspect of the present application provides a head mechanism.
  • An embodiment of a second aspect of the present application provides a fan device.
  • an embodiment of the first aspect of the present application provides a head mechanism, including: a centrifugal volute, a centrifugal fan is provided in the centrifugal volute, and an air duct outlet and an air duct inlet are provided on the centrifugal volute; an outer plate, which is arranged on one side of the centrifugal volute along the axial direction, and an outer air inlet corresponding to the air duct inlet is provided on the outer plate; wherein the outer plate includes a recessed plate, and a plurality of first air inlet holes are provided on the recessed plate.
  • the recessed plate is recessed toward the centrifugal volute, and an outer wall surface of the recessed plate is curved in a cross section passing through the rotating shaft of the centrifugal fan.
  • an angle between an outer wall surface of the recessed plate and a vertical direction is no greater than 30°.
  • it further comprises: a casing, wherein a main An air inlet and an air outlet, an auxiliary air inlet is arranged on the axial wall of the casing, the air outlet is arranged corresponding to the air duct outlet, and the auxiliary air inlet is arranged corresponding to the air duct inlet.
  • a casing wherein a main An air inlet and an air outlet, an auxiliary air inlet is arranged on the axial wall of the casing, the air outlet is arranged corresponding to the air duct outlet, and the auxiliary air inlet is arranged corresponding to the air duct inlet.
  • the casing specifically includes: a first support cover and a second support cover, the first support cover and the second support cover are connected to form an air outlet and a main air inlet; wherein, the auxiliary air inlet is arranged on the axial wall surface of the first support cover and/or the axial wall surface of the second support cover.
  • the auxiliary air inlet specifically includes a plurality of second air inlet holes in a circumferential array.
  • it further includes: an air vent cover, which is mounted on the outer side of the casing, and the air vent cover is provided with a first grille portion corresponding to the main air inlet and a second grille portion corresponding to the air outlet.
  • the filter structure and the first grille portion are arranged on the outer side of the air vent correspondingly.
  • a mounting groove corresponding to the main air inlet is provided on the circumferential side wall of the air hood, and also includes: a cover grille detachably connected to the mounting groove, and a filter structure is provided between the cover grille and the mounting groove.
  • the outer panel specifically includes: a first side panel, arranged on a side of the first support cover away from the second support cover; a second side panel, arranged on a side of the second support cover away from the first support cover; wherein the first side panel and the second side panel are provided with an external air inlet corresponding to the auxiliary air inlet.
  • auxiliary air inlets are respectively provided on the axial wall surfaces at both ends of the casing along the axial direction.
  • it also includes: a guide member, which is arranged at one end of the casing in the axial direction; wherein a guide plate is provided on the side of the guide member facing the casing, and air flows into the casing through the guide plate and the recessed plate, and the angle between the guide plate and the vertical direction is 60° to 90°.
  • the angle between a tangent line at one end of the guide plate away from the nose mechanism and the vertical direction is less than 40°.
  • the main air inlet of the head mechanism is arranged around the rotation axis of the rotating bracket.
  • the second aspect of the present application provides a fan device, comprising: a floor bracket, a floor
  • the top of the floor bracket forms a guide piece; any one of the head mechanisms in the first aspect is arranged on the floor bracket.
  • a driving mechanism at least part of the driving mechanism is disposed in the guide member, the driving mechanism includes: a first support member, connected to the floor stand; a rotating motor, disposed on the first support member, and the driving end of the rotating motor is connected to the second support member, and the second support member is connected to the head mechanism.
  • it further includes: a rotating mechanism, at least part of which is disposed in the guide member; wherein the rotating mechanism and the driving mechanism are disposed on opposite sides of the head mechanism along the axial direction.
  • the rotating shaft of the rotating mechanism is located at the center of the recessed plate in the head mechanism; and the first air inlet hole of the head mechanism is arranged around the rotating shaft of the rotating mechanism.
  • the head mechanism proposed in this application mainly includes an outer panel and a centrifugal fan assembly.
  • the centrifugal fan assembly is divided into a centrifugal volute and a centrifugal fan. Since the head mechanism of this solution adopts a centrifugal fan, there are no fan blades exposed outside, which greatly increases the safety of use during operation.
  • an outer plate axially outside the centrifugal volute, the incoming air can be initially dispersed, so that the air inflow is more uniform.
  • an outer air inlet is arranged on the outer plate, and the outer air inlet is arranged in a hole shape. When the centrifugal fan is running, air will flow in through the outer air inlet and into the centrifugal fan through the auxiliary air inlet, thereby completing the air intake.
  • the outer panel is recessed and the first air inlet is set on the recessed panel, which can effectively reduce the impact of air when it enters the negative pressure and achieve noise reduction.
  • the recessed panel can have a certain guiding effect on the air, and at the same time, the Coanda effect is used to make the air tend to flow along the wall, thereby improving the air intake efficiency.
  • FIG1 is a schematic structural diagram of a head mechanism according to an embodiment of the present application.
  • FIG2 shows a schematic structural diagram of a centrifugal volute and an impeller according to an embodiment of the present application
  • FIG3 shows a schematic structural diagram of a housing according to an embodiment of the present application.
  • FIG4 shows a schematic cross-sectional structure diagram of a head mechanism according to an embodiment of the present application
  • FIG5 shows a schematic cross-sectional structure diagram of a head mechanism according to an embodiment of the present application
  • FIG6 shows a schematic diagram of an axial cross-sectional structure of a head mechanism according to an embodiment of the present application
  • FIG7 shows a schematic structural diagram of a fan device according to an embodiment of the present application.
  • FIG8 shows a schematic structural diagram of a fan device according to an embodiment of the present application.
  • FIG9 shows a schematic structural diagram of a rotating bracket according to an embodiment of the present application.
  • FIG10 is a schematic structural diagram of a driving mechanism according to an embodiment of the present application.
  • FIG. 11 shows a schematic structural diagram of a head mechanism according to an embodiment of the present application.
  • FIGS. 1 to 11 The corresponding relationship between the reference numerals and component names in FIGS. 1 to 11 is as follows: 100: head mechanism; 102: housing; 1022: air outlet; 1024: main air inlet; 1026: Auxiliary air inlet; 1028: second air inlet; 1032: first support cover; 1034: second support cover; 104: centrifugal volute; 1042: air duct outlet; 1044: air duct inlet; 106: centrifugal fan; 1062: drive motor; 1064: impeller; 107: air hood; 1072: first grille part; 1074: second grille part; 108: filter structure; 1102: mounting groove; 1104: cover grille; 112: outer plate; 1122: outer air inlet; 1124: recessed plate; 126: first air inlet; 1132: first side plate; 1134: second side plate; 200: fan device; 202: floor stand; 204: driving mechanism; 2042: first support member; 2046: second support member; 206:
  • a head mechanism 100 proposed in one embodiment includes a centrifugal volute 104, a centrifugal fan 106 and an outer plate. Since the head mechanism 100 of this scheme adopts a centrifugal fan 106, there are no blades exposed outside, which greatly increases the safety of use during operation.
  • An outer plate 112 is arranged outside the axial direction of the centrifugal volute 104, which can have a preliminary effect of breaking up the incoming air, thereby making the air flow more uniform.
  • an outer air inlet 1122 is provided on the outer plate 112, and the outer air inlet 1122 is arranged in a hole shape.
  • the outer plate is designed to be concave, and a first air inlet is provided on the concave plate, so that the impact of air during negative pressure air intake can be effectively reduced, thereby achieving noise reduction.
  • the recessed plate can have a certain guiding effect on the air. At the same time, by utilizing the Coanda effect, the air tends to flow along the wall, thereby improving the air intake efficiency.
  • a head mechanism 100 proposed in this embodiment mainly includes a casing 102 and a centrifugal fan assembly, and the centrifugal fan assembly is divided into a centrifugal volute 104 and a centrifugal fan 106.
  • the centrifugal volute 104 By arranging the centrifugal volute 104 in the casing 102, the air inlet and outlet circulation can be achieved through the air outlet 1022 and the main air inlet 1024 on the casing 102. Since the head mechanism 100 of this solution adopts the centrifugal fan 106, there are no fan blades exposed outside, which greatly increases the safety of use during operation.
  • the air inlet and outlet of a general centrifugal fan 106 are arranged at 90 degrees to each other, such as left and right air inlet, front air outlet, etc.
  • the present solution is to open air inlets and outlets 1022 at the same position on the casing 102 outside the centrifugal volute 104, that is, the air outlet 1022 and the main air inlet 1024 are both arranged on the circumferential side wall of the casing 102.
  • the air outlet 1022 and the main air inlet 1024 are both arranged on the circumferential side wall of the casing 102.
  • the circumferential side wall of the casing 102 needs to be processed to produce a casing 102 structure with an air outlet 1022 and a main air inlet 1024.
  • main air inlet 1024 and the auxiliary air inlet 1026 are respectively arranged on the circumferential and axial wall surfaces of the casing 102.
  • the auxiliary air inlet 1026 will be blocked by the wall and cannot be fully utilized.
  • the air inlet area of the auxiliary air inlet 1026 is used to reduce the air volume and affect the air outlet effect.
  • the present application utilizes the main air inlet 1024 located in the circumferential direction of the casing 102 to meet the required air inlet volume, so that the position of the product is not affected by the environment, which greatly improves the usage scenario.
  • the outer plate 112 is recessed in design, and a first air inlet hole 126 is provided on the recessed plate 1124, thereby effectively reducing the impact of air when negative pressure air enters.
  • the recessed plate 1124 can have a certain guiding effect on the air, and at the same time, the Coanda effect is utilized so that the air tends to flow along the wall, thereby improving the air intake efficiency.
  • the recessed direction of the recessed plate 1124 is concave, that is, it is recessed toward the centrifugal volute 104.
  • the recessed plate 1124 is a curved surface, and the air flows into the first air inlet 126 along the surface of the recessed plate 1124 more smoothly.
  • the curved surface structure can effectively improve the flow guidance effect and the air intake efficiency without increasing the wind resistance.
  • the angle c between the outer wall of the recessed plate 1124 and the vertical direction is limited to less than 30 degrees.
  • the recessed angle of the recessed plate 1124 is small, and the air turns more gently, which reduces the possibility of noise and makes the guiding effect more obvious, taking into account both the spatial arrangement of the structure and the air guidance effect.
  • the head mechanism 100 is in an annular shape as a whole, and may also be partially protruding on the basis of a cylindrical shape as shown in FIG. 1 .
  • the air outlet 1022 and the main air inlet 1024 on the casing 102 are both connected to the centrifugal volute 104 , so that the centrifugal fan 106 can inhale air from the main air inlet 1024 and discharge it to the outside through the air outlet 1022 .
  • an air duct is formed in the centrifugal volute 104
  • the air duct outlet 1042 corresponds to the air outlet 1022 on the casing 102
  • the air duct inlet 1044 corresponds to the auxiliary air inlet 1026 on the casing 102.
  • the housing 102 specifically includes a first support cover 1032 and a second support cover 1034 that are separated. When the first support cover 1032 and the second support cover 1034 are connected, the housing 102 is formed, that is, a Air vent 1022 and main air inlet 1024 .
  • partial contour structures of the air outlet 1022 and the main air inlet 1024 exist on the first support cover 1032 and the second support cover 1034 respectively.
  • the air outlet 1022 and the main air inlet 1024 may be disposed on the first support cover 1032 at the same time, or may be disposed on the second support cover 1034 at the same time.
  • one of the air outlet 1022 and the main air inlet 1024 is disposed on the first support cover 1032 , and the other is disposed on the second support cover 1034 .
  • an air hood 107 is disposed on the outside of the housing 102 , and the air hood 107 specifically includes a first grille portion 1072 and a second grille portion 1074 , so that the air can be dispersed when passing through the first grille portion 1072 or the second grille portion 1074 , thereby improving the uniformity of air outlet.
  • extension direction of the grille of the second grille portion 1074 is not parallel to the extension direction of the blades, so that the wind flowing out through the air duct outlet 1042 can be dispersed by the second grille portion 1074, thereby improving the uniformity of the air flow. It can be understood that if the extension direction of the blades is parallel to the extension direction of the grille of the second grille portion 1074, the direction of the air flow will be blocked, resulting in a loss of air volume.
  • the blades when viewed from the air outlet 1022, the blades extend in the horizontal direction, and the extension direction of the grille can be vertical or inclined, as long as there is a certain angle with the horizontal direction.
  • the relative positional relationship between the extension direction of the blades and the extension direction of the grille is vertical, thereby minimizing the obstruction to the outlet airflow and ensuring the outlet air volume.
  • the distance between the air duct outlet 1042 and the volute is limited, so that the air can maintain a higher wind speed using a shorter air duct, thereby achieving a longer air supply distance and improving the air circulation in the environment where the product is located.
  • the lateral distance between the air duct outlet 1042 and the volute tongue portion on the centrifugal volute 104 must be less than 0.5 times the diameter of the impeller 1064, that is, in the direction perpendicular to the vertical direction, the distance between the air duct outlet 1042 and the volute tongue is less than 0.5 ⁇ the impeller diameter.
  • the position of the volute tongue is the minimum gap between the wind wheel and the volute.
  • the size between the impeller 1064 and the volute air outlet 1022 is limited, and the distance between the air duct outlet 1042 and the rotating axis of the impeller 1064 in the lateral direction is limited to 0.7 to 1.3 times the diameter of the impeller 1064. This can reduce the wind speed at the air duct outlet 1042 and increase the outward wind speed, thereby improving the circulation effect.
  • the shape of the second grille portion 1074 is also limited. As shown in FIG5 , in the direction from top to bottom, the distance Ln between the second grille portion 1074 and the vertical plane gradually increases, that is, Ln1 ⁇ Ln2 ⁇ Ln3.
  • the air duct outlet 1042 as a whole is extended from top to bottom.
  • the plane in the vertical direction corresponding to the top of the air duct outlet 1042 can be defined as a vertical plane.
  • the bottom air volume is increased by adjusting the grille position and increasing the length of the bottom air duct, thereby achieving the effect of uniform air outlet in the upper and lower directions.
  • the shape of the air duct outlet 1042 is limited, and the profile of the air duct outlet 1042 on the cross section of the centrifugal fan 106 is convex, which can increase the air output at the bottom of the air duct outlet 1042.
  • the curvature of the profile of the duct outlet 1042 at the top position is smaller than the curvature at the bottom position.
  • the curvature of the contour of the duct outlet 1042 at the bottom position is smaller than the curvature at the top position.
  • a filter structure 108 is provided at at least one of the main air inlet 1024 and the auxiliary air inlet 1026, which can optimize and filter the air quality of the indoor environment during the operation of the fan, thereby making the blown air cleaner and improving the user experience.
  • the filter structure 108 may use a HEPA filter, so as to filter impurities with smaller particle sizes and some harmful substances in the air.
  • the filter structure 108 is only disposed at the exit of the main air inlet 1024 .
  • the filter structure 108 can be disposed on the inner side of the main air inlet 1024 , or on the outer side of the main air inlet 1024 .
  • the filter structure 108 is only provided at the exit of the auxiliary air inlet 1026 , and the filter structure 108 can be provided on the inner side of the auxiliary air inlet 1026 , or correspondingly provided on the outer side of the auxiliary air inlet 1026 .
  • the filter structure 108 is disposed at both the main air inlet 1024 and the auxiliary air inlet 1026 .
  • the filter structure 108 is arranged outside the air hood 107, so that it is more convenient to operate when it needs to be replaced. It is understandable that the filter structure 108 is a consumable structure. After the product has been running for a period of time, a lot of filtered dust will accumulate on the filter structure 108, so there is a need for replacement. This solution sets the filter structure 108 outside the air hood 107 and corresponds to the main air inlet 1024, so that users can replace it more conveniently.
  • an installation groove 1102 is provided on the air hood 107.
  • the position of the installation groove 1102 is a position on the circumferential side wall of the air hood 107 corresponding to the main air inlet 1024, and is specifically arranged on the radial outside of the main air inlet 1024.
  • the cover grille 1104 is also grille-shaped, and air can circulate normally, so that the filter structure 108 can be limited and fixed.
  • the cover grille 1104 and the installation groove 1102 are detachably connected, it is also convenient to replace the filter structure 108.
  • the detachable connection between the cover grille 1104 and the mounting slot 1102 includes but is not limited to a snap connection, a threaded connection, a magnetic connection, etc.
  • an outer plate 112 is provided axially outside the housing 102 to initially disperse the incoming air, thereby making the air flow more uniform.
  • an outer air inlet 1122 is provided on the outer plate 112, and the outer air inlet 1122 is arranged in a hole shape. When the centrifugal fan 106 is running, air will flow in through the outer air inlet 1122 and will flow into the centrifugal fan 106 through the auxiliary air inlet 1026, thereby completing the air intake.
  • the position of the external air inlet 1122 corresponds to the position of the auxiliary air inlet 1026, and the specific corresponding relationship includes but is not limited to the external air inlet 1122 and the auxiliary air inlet 1026 being arranged at intervals in the axial direction.
  • the first air inlet holes 126 are in a circular array shape, so that air around the head mechanism 100 , that is, air from all directions, can flow in through the first air inlet holes 126 .
  • the number of outer panels 112 is two, specifically a first side panel 1132 and a second side panel 1134.
  • the number of outer panels 112 is two, specifically a first side panel 1132 and a second side panel 1134.
  • the number of outer panels 112 is two, specifically a first side panel 1132 and a second side panel 1134.
  • the aperture of the first air inlet hole 126 is limited, and gradually decreases from the inside to the outside in the radial direction.
  • the aperture on the inner side is larger, and the aperture on the outer side is smaller.
  • the frequency of each noise source varies, avoiding the superposition of the fundamental frequency, which can effectively reduce the noise.
  • the aperture of the first air inlet hole 126 on the outer side is smaller, and the air intake volume is less, while the aperture of the first air inlet hole 126 on the inner side is larger, and the air intake volume is larger, so that the intake speed at each radial position is as consistent as possible, thereby improving the uniformity of the intake.
  • the apertures of the first air inlet holes 126 on the outer panel 112 at the same radius are limited, and the apertures at the same radius are the same. On the one hand, it is easy to process, and on the other hand, when the air flows to the same radius, the air volume flowing in through the first air inlet holes 126 is more uniform.
  • the center of the circle with the same radius is the axis around which the first air inlet holes 126 rotate when forming a circular array, which is generally the rotating shaft of the centrifugal fan 106 .
  • auxiliary air inlet 1026 on the casing 102 its shape is a hole-like structure, that is, it includes a plurality of second air inlet holes 1028 in a circular array. Under the action of the second air inlet holes 1028, when the air flows to the auxiliary air inlet 1026 through the external air inlet 1122, the air can be dispersed for a second time, and the air flowing into the centrifugal volute 104 is more sufficient and uniform.
  • the second air inlet holes 1028 are in a circular array shape, so that after the air flows into between the outer air inlet 1122 and the auxiliary air inlet 1026 through the first air inlet holes 126 , air in all directions can flow in through the second air inlet holes 1028 .
  • each first air inlet hole 126 has a second air inlet hole 1028 arranged opposite thereto.
  • first air inlet hole 126 and the second air inlet hole 1028 are staggered.
  • the aperture of the second air inlet hole 1028 is limited, and the aperture of each second air inlet hole 1028 is the same, which is convenient for processing. After being broken up by the first air inlet hole 126, the difference in the air intake volume at each radius is small. Therefore, the aperture of the inner second air inlet hole 1028 does not change, and the air intake volume can also be guaranteed.
  • the aperture gradually decreases from the inside to the outside in the radial direction, the aperture closer to the inside is larger, and the aperture closer to the outside is smaller.
  • the frequencies of various noise sources vary, avoiding the generation of fundamental frequency superposition phenomenon, and effectively reducing noise.
  • the aperture of the second air inlet hole 1028 closer to the outside is smaller, and the air intake volume is smaller, while the aperture of the second air inlet hole 1028 closer to the inside is larger, and the air intake volume is larger, so that the air intake volume at each radial position is smaller.
  • the air intake speed should be as consistent as possible to improve the air intake uniformity.
  • an auxiliary air inlet 1026 is provided on the end face of the casing 102, that is, the axial wall surface, to increase the air intake of the centrifugal fan 106. It can be understood that on the basis of the main air inlet 1024, two additional auxiliary air inlets 1026 are provided. When air is taken in, air will be taken inward from three directions of the casing 102, which is more convenient to meet the use requirements of large air volume.
  • auxiliary air inlet 1026 needs to be connected to the centrifugal volute 104 to facilitate air intake.
  • the main air inlet 1024 and the air outlet 1022 are both arranged along the circumference of the housing 102, the effect of supplementing the intake air volume can be achieved.
  • the angle b between the straight line of the end of the air outlet 1022 close to the main air inlet 1024 relative to the rotating shaft of the centrifugal fan 106 and the straight line of the end of the air inlet close to the air outlet 1022 relative to the rotating shaft of the centrifugal fan 106 is not less than 30 degrees, so that a certain gap is limited between the main air inlet 1024 and the air outlet 1022, so that the air flowing out through the air outlet 1022 will not directly return to the main air inlet 1024, thereby ensuring the air supply effect.
  • the farthest position of the main air inlet 1024 from the air outlet 1022 is limited, that is, the angle a between the end of the air outlet 1022 close to the main air inlet 1024 and the end of the main air inlet 1024 far from the air outlet 1022 relative to the rotating shaft of the centrifugal fan 106 is not greater than 150 degrees, so that the position with the highest air inlet efficiency in the centrifugal volute 104 is fully utilized to improve the air inlet efficiency.
  • the air intake resistance of the whole machine can be reduced, the air at the bottom position can be fully utilized, and the air intake volume can be greatly increased.
  • the main air inlet 1024 is limited to be not too large, thereby ensuring the position of the air outlet 1022 and the air supply distance.
  • the relative positions of the air outlet 1022 and the main air inlet 1024 are limited.
  • the air outlet 1022 is located at the rear side of the main air inlet 1024, that is, when rotating counterclockwise, the air outlet 1022 is located on the upper side of the main air inlet 1024, and when rotating clockwise, the air outlet 1022 is located on the lower side of the main air inlet 1024.
  • the air inlet areas of the two air inlets are limited, and the air inlet area of the main air inlet 1024 is limited to be larger, and the air inlet area of the auxiliary air inlet 1026 is limited to be smaller, so that The main air inlet 1024 is utilized to realize the air intake, and according to the position of the main air inlet 1024, hidden air intake can also be realized.
  • the guide member 208 may be directly disposed on the rotating bracket 210 .
  • the inlet angle of the guide plate 2082 is restricted, and the angle e of the tangent of the end of the guide plate 2082 away from the head mechanism 100 relative to the vertical direction is limited to less than 40°, which can reduce the impact of the flow from the auxiliary air inlet 1026 and improve the air intake efficiency.
  • this embodiment provides a fan device 200, including a floor stand 202 and a head mechanism 100, wherein the floor stand 202 can support the head mechanism 100.
  • the fan device 200 is in the form of a floor fan, and the air outlet height is more in line with the user's usage habits.
  • a guide member is formed on the top of the floor stand, and the end structure extending upward from the floor stand can cooperate with the recessed plate on the head mechanism, so that air can flow into the head mechanism through the position between the two.
  • the fan device 200 includes the head mechanism 100, it has the beneficial effects of any head mechanism 100 in the above-mentioned first aspect embodiment, which will not be described in detail here.
  • the fan device 200 includes but is not limited to floor fans, tower fans, circulating fans and other devices.
  • the main air inlet 1024 is arranged on a side of the casing 102 close to the floor stand 202, that is, on the downward side of the casing 102, so as to minimize the overall appearance of the fan device 200 at a visible angle, that is, the lower side close to the floor stand 202 is not easily observed by the user.
  • the swing of the head mechanism 100 can be driven, for example, the head mechanism 100 can be driven to swing left and right, or the head mechanism 100 can be driven to swing up and down.
  • the driving mechanism 204 includes a first support member 2042, a rotating motor 212, and a second support member 2046.
  • the first support member 2042 and the second support member 2046 are respectively arranged on both sides of the rotating motor 212.
  • the first support member 2042 is used to connect to the floor stand 202.
  • the second support member 2046 is used to connect the head mechanism 100 , and under the action of the rotating motor 212 , the head mechanism 100 can swing relative to the floor bracket 202 .
  • the structure of the driving mechanism for driving the head mechanism to rotate is arranged in the guide member, and the internal space of the guide member itself is utilized to take into account both the internal rotation drive and the air inlet diversion on the outer surface.
  • a rotating mechanism 206 is disposed on the floor bracket 202 and is disposed on the other side of the head mechanism 100 .
  • the rotating mechanism 206 mainly serves as an auxiliary support, thereby effectively supporting and rotating the head mechanism 100 under the joint action of the driving mechanism 204 .
  • the main air inlet can be made circular and distributed around the rotating shaft of the rotating mechanism.
  • air from all directions can flow into the centrifugal fan through the circumferentially arranged first air inlet.
  • a rotating bracket 210 is provided to enable the head mechanism 100 to achieve a shaking and rotating movement.
  • the rotating bracket 210 includes a connecting portion 2102.
  • Two connecting portions 2102 are provided on both axial sides of the housing 102.
  • the housing 102 can be rotatably connected to the rotating bracket 210 through the connecting portion 2102, so that the head mechanism 100 can achieve a pitch shaking or a lateral swing.
  • This solution directly uses the connecting portion 2102, extends the wire along the connecting portion 2102, and then leads it outward to achieve power supply to the centrifugal fan 106.
  • the rotating bracket 210 is Y-shaped as a whole, so that the size of the head mechanism 100 is not greatly restricted.
  • the auxiliary air inlet 1026 is directly arranged around the rotation axis of the rotating bracket 210, that is, the first air inlet hole 126 will avoid the fulcrum position when arranged, thereby reducing the influence of the fulcrum on the air intake volume and improving the air intake efficiency.
  • a rotating motor 212 is provided on the connecting portion 2102 on one side of the housing 102, which can be Rotate to drive.
  • the centrifugal fan 106 includes a drive motor 1062 and an impeller 1064.
  • the drive motor 1062 can drive the impeller 1064 to rotate, thereby achieving outward air supply.
  • the positions of the rotating motor 212 and the drive motor 1062 are restricted, and the two are restricted to be set on opposite sides of the casing 102, so that the center of gravity of the entire product is close to the central axis to maintain the stability of the structure.
  • a wire hole 2104 is provided on the connection portion 2102 for leading the wires of the centrifugal fan 106 outward. Due to the use of the wire hole 2104 , the wires can be led out from the inside to the outside and then connected to a controller or a power supply.
  • a wire groove 2106 is provided on the rotating bracket 210, and the wires can be placed in the wire groove 2106.
  • the wire groove 2106 provides space for the wires and realizes structural protection so that the wires can be hidden in the wire groove 2106 to ensure smooth circuit operation.
  • a limit buckle 2108 is provided on the wire groove 2106 to limit the wire and prevent it from falling into the interior of the head mechanism 100 after falling off, thereby improving the safety of use.
  • the distance between any one of the wire hole 2104 and the wire groove 2106 and the rotating shaft of the impeller 1064 is within 200 mm, and the path of the wire is closer to the center to facilitate the lead-out of the wire.
  • the recessed plate can have a certain guiding effect on the air.
  • the air tends to flow along the wall, thereby achieving an improvement in the air intake efficiency.

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

Abstract

一种机头机构(100)和风扇设备，其中，机头机构(100)包括：离心蜗壳(104)，离心蜗壳(104)内设有离心风机(106)，离心蜗壳(104)上设有风道出口(1042)以及风道进口(1044)；外板(112)，沿轴向方向设于离心蜗壳(104)的一侧，外板(112)上设有与风道进口(1044)对应的外进风口；其中，外板(112)包括凹陷板(1124)，凹陷板(1124)上设有多个第一进风孔(126)。该机头机构(100)中，凹陷板（1124）对空气可起到一定的导流效果，同时利用科恩达效应，使得空气会倾向于沿着壁面流动，从而实现了进风效率的提升。

Description

机头机构和风扇设备
本申请要求于2023年03月23日提交中国国家知识产权局、申请号为“202320593091.9”、申请名称为“机头机构和风扇设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及风扇技术领域，具体而言，涉及一种机头机构和一种风扇设备。
背景技术
目前，循环扇在运行过程中会产生负压，从而实现空气的流入。相关技术中，大部分产品结构的进风口所处表面与进风方向是垂直的，导致空气直接流入进风口时，会冲击到实体壁面上，从而产生噪音和异响。
发明内容
本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。
有鉴于此，本申请第一方面的实施例提供了一种机头机构。
本申请第二方面的实施例提供了一种风扇设备。
为了实现上述目的，本申请第一方面的实施例提供了一种机头机构，包括：离心蜗壳，离心蜗壳内设有离心风机，离心蜗壳上设有风道出口以及风道进口；外板，沿轴向方向设于离心蜗壳的一侧，外板上设有与风道进口对应的外进风口；其中，外板包括凹陷板，凹陷板上设有多个第一进风孔。
在一些实施例中，可选地，凹陷板朝向离心蜗壳凹陷，且凹陷板的外壁面在过离心风机的转轴的截面上呈曲线状。
在一些实施例中，可选地，在过离心风机的转轴的截面上，凹陷板的外壁面与竖直方向所呈夹角不大于30°。
在一些实施例中，可选地，还包括：机壳，机壳的周向侧壁上设有主 进风口和出风口，机壳的轴向壁面上设有辅进风口，出风口与风道出口对应设置，辅进风口与风道进口对应设置，由主进风口和辅进风口流入的空气，经风道进口流入离心蜗壳。
在一些实施例中，可选地，机壳具体包括：第一支撑罩和第二支撑罩，第一支撑罩和第二支撑罩连接后形成出风口和主进风口；其中，辅进风口设于第一支撑罩的轴向壁面和/或第二支撑罩的轴向壁面上。
在一些实施例中，可选地，辅进风口具体包括多个圆周阵列的第二进风孔。
在一些实施例中，可选地，还包括：过风罩，套设于机壳的外侧，过风罩上设有与主进风口对应的第一格栅部，以及与出风口对应的第二格栅部。
在一些实施例中，可选地，滤网结构与第一格栅部对应设于过风罩的外侧。
在一些实施例中，可选地，过风罩的周向侧壁上设有与主进风口对应设置的安装槽，还包括：盖板格栅，与安装槽可拆卸连接，滤网结构设于盖板格栅和安装槽之间。
在一些实施例中，可选地，外板具体包括：第一侧板，设于第一支撑罩远离第二支撑罩的一侧；第二侧板，设于第二支撑罩远离第一支撑罩的一侧；其中，第一侧板和第二侧板上设有与辅进风口对应的外进风口。
在一些实施例中，可选地，机壳沿轴向方向的两端的轴向壁面上分别设有辅进风口。
在一些实施例中，可选地，还包括：导向件，设于机壳的轴向方向的一端；其中，导向件朝向机壳的一侧设有导向板，空气通过导向板和凹陷板流入机壳，导向板与竖直方向之间的夹角为60°～90°。
在一些实施例中，可选地，导向板远离机头机构的一端的切线与竖直方向之间的夹角为小于40°。
在一些实施例中，可选地，机头机构的主进风口绕转动支架的转轴布置。
本申请第二方面的实施例提供了一种风扇设备，包括：落地支架，落 地支架的顶部形成导向件；上述第一方面中的任一机头机构，设于落地支架上。
在一些实施例中，可选地，还包括：驱动机构，至少部分驱动机构设于导向件内，驱动机构包括：第一支撑件，与落地支架相连；转动电机，设于第一支撑件上，且转动电机的驱动端连接至第二支撑件，第二支撑件与机头机构相连。
在一些实施例中，可选地，还包括：转动机构，至少部分转动机构设于导向件内；其中，转动机构和驱动机构设于机头机构的沿轴向的相对两侧。
在一些实施例中，可选地，转动机构的转轴位于机头机构中凹陷板的中心位置；机头机构的第一进风孔绕转动机构的转轴设置。
根据本申请提出的机头机构，主要包括外板以及离心风扇组件，离心风扇组件分为离心蜗壳以及离心风机，由于本方案的机头机构采用了离心风机，并未有风叶外露在外，使得在运转过程中的使用安全性大大增加。
需要强调的，通过在离心蜗壳的轴向外设置外板，可对进风起到初步打散的效果，从而使得空气的流入更为均匀。具体地，在外板上设有外进风口，外进风口以孔状布置，在离心风机运转的情况下，空气会经外进风口流入，且会经过辅进风口流入离心风机，从而完成进风。
进一步地，对外板进行凹陷化设计，在凹陷板上设置第一进风孔，从而可有效降低空气在负压进风时的冲击，实现降噪。此外，凹陷板对空气可起到一定的导流效果，同时利用科恩达效应，使得空气会倾向于沿着壁面流动，从而实现了进风效率的提升。
本申请的附加方面和优点将在下面的描述部分中变得明显，或通过本申请的实践了解到。
附图说明
图1示出了根据本申请的一个实施例的机头机构的结构示意图；
图2示出了根据本申请的一个实施例的离心蜗壳和叶轮的结构示意图；
图3示出了根据本申请的一个实施例的机壳的结构示意图；
图4示出了根据本申请的一个实施例的机头机构的横截面结构示意图；
图5示出了根据本申请的一个实施例的机头机构的横截面结构示意图；
图6示出了根据本申请的一个实施例的机头机构的轴向截面结构示意图；
图7示出了根据本申请的一个实施例的风扇设备的结构示意图；
图8示出了根据本申请的一个实施例的风扇设备的结构示意图；
图9示出了根据本申请的一个实施例的转动支架的结构示意图；
图10示出了根据本申请的一个实施例的驱动机构的结构示意图；
图11示出了根据本申请的一个实施例的机头机构的结构示意图。
其中，图1至图11中附图标记与部件名称之间的对应关系为：
100：机头机构；102：机壳；1022：出风口；1024：主进风口；1026：
辅进风口；1028：第二进风孔；1032：第一支撑罩；1034：第二支撑罩；104：离心蜗壳；1042：风道出口；1044：风道进口；106：离心风机；1062：驱动电机；1064：叶轮；107：过风罩；1072：第一格栅部；1074：第二格栅部；108：滤网结构；1102：安装槽；1104：盖板格栅；112：外板；1122：外进风口；1124：凹陷板；126：第一进风孔；1132：第一侧板；1134：第二侧板；
200：风扇设备；202：落地支架；204：驱动机构；2042：第一支撑件；
2046：第二支撑件；206：转动机构；208：导向件；2082：导向板；210：转动支架；2102：连接部；2104：过线孔；2106：过线槽；2108：限位扣；212：转动电机。
具体实施方式
为了能够更清楚地理解本申请的实施例的上述目的、特征和优点，下面结合附图和具体实施方式对本申请的实施例进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以 相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请的实施例还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不限于下面公开的具体实施例的限制。
下面参照图1至图11描述根据本申请的一些实施例。
在一个实施例提出的一种机头机构100，包括离心蜗壳104、离心风机106以及外板，由于本方案的机头机构100采用了离心风机106，并未有风叶外露在外，使得在运转过程中的使用安全性大大增加。在离心蜗壳104的轴向外设置外板112，可对进风起到初步打散的效果，从而使得空气的流入更为均匀。具体地，在外板112上设有外进风口1122，外进风口1122以孔状布置，在离心风机106运转的情况下，空气会经外进风口1122流入，且会经过辅进风口1026流入离心风机106，从而完成进风。进一步地，对外板进行凹陷化设计，在凹陷板上设置第一进风孔，从而可有效降低空气在负压进风时的冲击，实现降噪。此外，凹陷板对空气可起到一定的导流效果，同时利用科恩达效应，使得空气会倾向于沿着壁面流动，从而实现了进风效率的提升。
或者，在另一个实施例中，如图1所示，本实施例提出的一种机头机构100，主要包括机壳102以及离心风扇组件，离心风扇组件分为离心蜗壳104以及离心风机106，通过将离心蜗壳104设置在机壳102内，可通过机壳102上的出风口1022以及主进风口1024实现空气的进出风的循环，由于本方案的机头机构100采用了离心风机106，并未有风叶外露在外，使得在运转过程中的使用安全性大大增加。需要强调的是，一般的离心风机106的进出风是相互呈九十度设置的，例如左右进风，前出风等，本方案则是通过在离心蜗壳104外侧的机壳102上开设同一位置的进出风口1022，即出风口1022和主进风口1024均设置在机壳102的周向侧壁上，在生产时，仅需对机壳102的周向侧壁进行加工，即可生产出带有出风口1022和主进风口1024的机壳102结构。需要补充的是，主进风口1024和辅进风口1026分别设置在机壳102的周向和轴向壁面上，在机头机构100靠墙放置或靠角落放置时，辅进风口1026会被墙壁进行遮挡，无法充分利 用辅进风口1026的进风面积，从而缩小风量，影响出风效果，本申请利用位于机壳102的周向方向上的主进风口1024，可满足所需的进风量，使得产品的位置不受环境影响，极大的提高使用场景。
进一步地，在一个具体的实施例中，对外板112进行凹陷化设计，在凹陷板1124上设置第一进风孔126，从而可有效降低空气在负压进风时的冲击，凹陷板1124对空气可起到一定的导流效果，同时利用科恩达效应，使得空气会倾向于沿着壁面流动，从而实现了进风效率的提升。
凹陷板1124的凹陷方向为内凹，即朝向离心蜗壳104凹陷，凹陷板1124为曲面，空气在沿凹陷板1124的表面流入第一进风孔126时的过程更为顺畅，曲面的结构可在不增加风阻的情况下，有效提高导流效果，提高进风效率。
如图6所示，对凹陷板1124的外壁面与竖直方向的夹角c进行限制，限制其小于30度，凹陷板1124的凹陷角度较小，空气的转向比较平缓，减少发生噪音的可能，同时也使得导向效果更为明显，可兼顾结构的空间布置以及对空气的导流效果。
机头机构100的整体呈环状，也可以如图1所示，在圆柱形的基础上局部凸出。
其中，机壳102上的出风口1022和主进风口1024均与离心蜗壳104相连通，以便于离心风机106从主进风口1024处吸入空气，由出风口1022向外排出。
需要补充的是，如图2所示，离心蜗壳104内形成有风道，风道出口1042与机壳102上的出风口1022相对应，风道进口1044与机壳102上的辅进风口1026相对应，在离心风机106转动的情况下，空气通过主进风口1024和辅进风口1026流入机壳102后，会经过风道进口1044流入离心蜗壳104，再通过风道出口1042和出风口1022向外出风。可以理解，经风道进口1044流入离心蜗壳104的空气中的一部分是通过主进风口1024流入的，另一部分是通过辅进风口1026流入。
机壳102具体包括分离的第一支撑罩1032和第二支撑罩1034，在将第一支撑罩1032和第二支撑罩1034相连后会构成机壳102，也即形成出 风口1022和主进风口1024。
在一个实施例中，第一支撑罩1032和第二支撑罩1034上分别存在出风口1022和主进风口1024的部分轮廓结构。
在另一个实施例中，出风口1022和主进风口1024可同时设置在第一支撑罩1032上，或者同时设置在第二支撑罩1034上。
在另一个实施例中，出风口1022和主进风口1024中的一个设置在第一支撑罩1032上，另一个设置在第二支撑罩1034上。
其中，如图1所示，在机壳102外侧设置过风罩107，过风罩107具体包括第一格栅部1072和第二格栅部1074，从而可使得空气经过第一格栅部1072或第二格栅部1074时会被打散，提高出风均匀度。
需要补充的是，第二格栅部1074的格栅延伸方向并不平行于叶片的延伸方向，可使得经风道出口1042流出的风会被第二格栅部1074进行打散处理，从而提高出风均匀性。可以理解，若叶片的延伸方向与第二格栅部1074的格栅的延伸方向平行，则会阻碍出风气流方向，导致风量损失。
进一步地，从出风口1022观看，叶片沿横向延伸，格栅的延伸方向可以为竖直，也可以为倾斜，只要与横向存在一定的夹角即可。
更具体的，叶片的延伸方向与格栅的延伸方向之间的相对位置关系为垂直，从而可最大程度上降低对出风气流的阻碍影响，保证出风风量。
此外，对风道出口1042距离蜗壳的距离进行限定，从而可使得空气利用较短的风道保持较高的风速，从而可实现更远的送风距离，可提高产品所处环境内的空气循环。具体的，在叶轮1064的横截面上，在风道出口1042的位置处与离心蜗壳104上的蜗舌部分的横向距离需小于叶轮1064直径的0.5倍，即在垂直于竖直方向上的方向上，风道出口1042和蜗舌之间的距离＜0.5×叶轮直径。
可以理解，蜗舌的位置即为风轮与蜗壳之间的最小间隙处。
在一个具体的实施例中，对叶轮1064与蜗壳出风口1022间的尺寸进行限定，限定风道出口1042在横向方向上与叶轮1064的转轴的距离为叶轮1064直径的0.7～1.3倍，可使得风道出口1042处的风速衰减较少，向外的风速较大，可提高循环效果。
本实施例中，还对第二格栅部1074的形状进行限定，如图5所示，在由上至下的方向上，第二格栅部1074与竖直平面的距离Ln逐渐变长，即Ln1<Ln2<Ln3，风道出口1042整体是由上至下过渡延伸的，在此基础上，可对风道出口1042的顶部所对应的竖直方向上的平面进行定义，定义其为竖直平面，通过限定第二格栅部1074与竖直平面之间的距离逐渐增大，从而提高出风均匀性。可以理解，由于传统形式出风口1022顶部出风较多，通过调整格栅位置，提升底部风道长度实现底部出风量提高，从而实现上下方向出风均匀的效果。
进一步地，对风道出口1042的形状进行限定，风道出口1042在离心风机106的横截面上的轮廓呈外凸状，可对风道出口1042底部的出风量予以提高。
进一步地，风道出口1042的轮廓的曲率是单调变化的。
在一个实施例中，风道出口1042的轮廓在顶部位置的曲率小于在底部位置的曲率。
在另一个实施例中，风道出口1042的轮廓在底部位置的曲率小于在顶部位置的曲率。
在主进风口1024和辅进风口1026中的至少一者处设置滤网结构108，可在风扇运行过程中对室内环境的空气质量进行优化过滤，从而使得吹出的风更为干净，提高用户的使用体验。
进一步地，滤网结构108可以选用HEPA过滤网，从而可过滤空气中颗粒度较小的杂质以及一些有害物质。
在一个实施例中，仅在主进风口1024出处设置滤网结构108，滤网结构108可以设置在主进风口1024的内侧，或对应设置在主进风口1024的外侧。
在另一个实施例中，仅在辅进风口1026出处设置滤网结构108，滤网结构108可以设置在辅进风口1026的内侧，或对应设置在辅进风口1026的外侧。
在另一个实施例中，同时在主进风口1024和辅进风口1026设置滤网结构108。
可以理解，在滤网结构108设置在过风罩107的外侧，以便于需要更换时，更方便操作。可以理解，滤网结构108属于耗材类结构，在产品运行一段时间后，在滤网结构108上会堆积较多的过滤的灰尘，故而存在更换的需求，本方案通过将滤网结构108设置在过风罩107的外侧，且与主进风口1024对应设置，用户的更换更为便捷。
在上述任一实施例的基础上，在过风罩107上设置有安装槽1102，安装槽1102的位置为过风罩107的周向侧壁上与主进风口1024相对应的位置，具体设置在主进风口1024的径向外侧，在此基础上，通过设置盖板格栅1104，盖板格栅1104也呈格栅状，空气可正常流通，从而使得可对滤网结构108进行限位固定，同时由于盖板格栅1104与安装槽1102之间是可拆卸连接的，也便于对滤网结构108的更换。
可以理解，盖板格栅1104和安装槽1102之间的可拆卸连接包括但不限于卡接、螺纹连接、磁性连接等。
进一步地，在机壳102的轴向外设置外板112，可对进风起到初步打散的效果，从而使得空气的流入更为均匀。具体地，在外板112上设有外进风口1122，外进风口1122以孔状布置，在离心风机106运转的情况下，空气会经外进风口1122流入，且会经过辅进风口1026流入离心风机106，从而完成进风。
可以理解，外进风口1122的位置与辅进风口1026的位置是对应的，具体的对应关系包括但不限于外进风口1122和辅进风口1026在轴向方向上间隔设置。
进一步地，第一进风孔126呈圆周阵列状，使得在机头机构100四周，即各个方向上的空气均可通过第一进风孔126流入。
在一个具体的实施例中，如图11所示，外板112的数量为两个，具体为第一侧板1132和第二侧板1134，具体地，通过在两个支撑罩外设置两个侧板，即在第一支撑罩1032外设置第一侧板1132，第二支撑罩1034外设置第二侧板1134，在两个侧板上设置对应的外进风口1122，可使得空气从两个侧板上的外进风口1122流入到机壳102上的辅进风口1026，从而完成进风。
其中，对第一进风孔126的孔径进行限定，在径向方向上由内向外逐渐减小，靠内侧的孔径较大，靠外侧的孔径较小，一方面通过采用不同孔径的第一进风孔126，使得各噪声源的频率存在变化，避免基频叠加现象的产生，可有效降低噪音，另一方面，靠外的第一进风孔126的孔径较小，进风量较少，靠内的第一进风孔126的孔径较大，进风量较大，从而使得各半径位置的进气速度尽可能一致，提高进气均匀性。
更进一步地，对外板112上位于同一半径的第一进风孔126的孔径进行限定，同一半径的孔径是相同的，一方面便于加工，另一方面，空气在流动至同一半径处，经第一进风孔126流入的进风量更为均匀。
可以理解，同一半径的圆心为第一进风孔126在进行圆周阵列时所绕的轴线，一般是离心风机106的转轴。
如图3所示，对于机壳102上的辅进风口1026而言，其形态为孔状结构，即包括多个圆周阵列的第二进风孔1028，在第二进风孔1028的作用下，可在空气经外进风口1122流动至辅进风口1026时，空气可进行二次打散，流入到离心蜗壳104内部的空气更为充分和均匀。
进一步地，第二进风孔1028呈圆周阵列状，使得空气在通过第一进风孔126流入到外进风口1122和辅进风口1026之间后，各个方向上的空气均可通过第二进风孔1028流入。
进一步地，每个第一进风孔126均存在一个第二进风孔1028相对设置。
或者，第一进风孔126和第二进风孔1028错位设置。
在一个具体的实施例中，对第二进风孔1028的孔径进行限定，每个第二进风孔1028的孔径均相同，便于加工，且经过第一进风孔126的打散后，各个半径处的进风量的差距较小，故而在内侧的第二进风孔1028不进行孔径变化，也可保证进风量。
在另一个具体的实施例中，在径向方向上由内向外逐渐减小，靠内侧的孔径较大，靠外侧的孔径较小，一方面通过采用不同孔径的第二进风孔1028，使得各噪声源的频率存在变化，避免基频叠加现象的产生，可有效降低噪音，另一方面，靠外的第二进风孔1028的孔径较小，进风量较少，靠内的第二进风孔1028的孔径较大，进风量较大，从而使得各半径位置的 进气速度尽可能一致，提高进气均匀性。
在上述任一实施例的基础上，在机壳102的端面，即轴向壁面上各设置一个辅进风口1026，可增大离心风机106的进风量，可以理解，在主进风口1024的基础上，额外设置两个辅进风口1026，在进风时，会从机壳102的三个方向向内进风，更便于满足大风量的使用需求。
可以理解，辅进风口1026需与离心蜗壳104相连通，以便于实现进风。
在本实施例中，由于主进风口1024和出风口1022均沿机壳102的周向设置，可实现补充进风风量的效果。
具体地，如图4所示，出风口1022靠近主进风口1024的一端相对于离心风机106的转轴的直线，与进风口靠近出风口1022的一端相对于离心风机106的转轴的直线之间的夹角b不小于30度，从而可使得主进风口1024和出风口1022之间存在一定的间隙限定，使得经出风口1022流出的空气不会直接回到主进风口1024处，保证送风效果。
如图4所示，对主进风口1024距离出风口1022的最远位置进行限定，即出风口1022靠近主进风口1024的一端与主进风口1024远离出风口1022的一端相对于离心风机106的转轴的角度a不大于150度，充分利用离心蜗壳104中进风效率最高的位置进风，提高进风效率。
通过对主进风口1024的周向位置进行限制，限制其两端对应的圆心角为100°至130°，从而一方面可降低整机进气阻力，充分利用底部位置的空气，极大的提升进气量，另一方面，限制主进风口1024不易过大，从而保证出风口1022的位置以及送风距离。
在一个具体的实施例中，限制出风口1022和主进风口1024的相对位置，在离心风机106正常出风转动的情况下，沿离心风机106的旋转方向，出风口1022位于主进风口1024的后侧，即在逆时针转动时，出风口1022位于主进风口1024的上侧，顺时针转动，出风口1022则位于主进风口1024的下侧，主进风口1024处存在窝风现象，通过在该处开设出风口1022，以便于提高进风效率。
在一个具体的实施例中，对两种进风口的进风面积进行限定，限定主进风口1024的进风面积较大，辅进风口1026的进风面积较小，从而可充 分利用主进风口1024实现在，同时根据主进风口1024的位置还可实现隐藏式进风。
在另一个实施例中，如图6所示，在机头机构100的轴向两端分别设置一个导向件208，由于导向件208上设有导向板2082，在导向板2082和凹陷板1124的共同作用下会形成进风空间，空气会通过进风空间流入机壳102处。
其中，导向板2082相对于竖直方向的倾斜角度d为60°～90°，从而可保证空气可足量流入进风空间。
进一步地，导向件208可直接设置在转动支架210上。
其中，对导向板2082的进口角进行限制，限定导向板2082远离机头机构100的一端的切线相对于竖直方向的夹角e小于40°，可降低辅进风口1026来流的冲击，提升进风效率。
如图7所示，本实施例提出了一种风扇设备200，包括落地支架202以及机头机构100，落地支架202可对机头机构100起到支撑的作用。风扇设备200整体呈落地扇的形态，出风高度更符合用户的使用习惯。
需要强调的是，本申请中，在落地支架的顶部形成有导向件，利用落地支架向上延伸的端部结构，可与机头机构上的凹陷板进行配合，使得空气通过二者之间的位置流入机头机构中。
由于风扇设备200包括机头机构100，故而具有上述第一方面实施例中任一机头机构100的有益效果，在此不再赘述。
风扇设备200包括但不限于落地扇、塔扇、循环扇等设备。
进一步地，将主进风口1024设置在机壳102靠近落地支架202的一侧，即设置在机壳102朝下的一侧，最大程度减少风扇设备200的可见角度上的外观整体性，即靠近落地支架202的下侧不易被用户观察到。
此外，如图8所示，通过设置驱动机构204，可对机头机构100的摆动进行驱动，例如，可驱动机头机构100左右摆动，或者驱动机头机构100俯仰摆动。具体地，如图10所示，驱动机构204包括第一支撑件2042、转动电机212和第二支撑件2046，第一支撑件2042和第二支撑件2046分别设于转动电机212的两侧，第一支撑件2042用于连接至落地支架202， 第二支撑件2046用于连接机头机构100，在转动电机212的作用下即可使得机头机构100相对于落地支架202产生相对摆动。
需要补充的是，用于驱动机头机构转动的驱动机构中的至少部分结构设置在导向件内，利用导向件自身的内部空间，兼顾了内部的转动驱动以及外侧表面的进风导流。
在落地支架202上设置转动机构206，并将转动机构206设置在机头机构100的另一侧，转动机构206主要起到辅助支撑的效果，从而在驱动机构204的共同作用下对机头机构100起到有效的支撑旋转效果。
需要补充的是，用于配合驱动机构的转动机构中的至少部分结构设置在导向件内，利用导向件自身的内部空间，兼顾了内部的配合转动以及外侧表面的进风导流。
进一步地，转动机构206和驱动机构204设置在机头机构100的轴向两侧，从而实现对机头机构100的俯仰调节。
其中，通过对转动机构的转轴的位置进行限定，限定其位于凹陷板的中心，或者位于第一进风孔的中心，从而可使得主进风口呈圆周状，绕转动机构的转轴分布，在控制机头机构俯仰转动时，各个方向的空气均可通过周向布置的第一进风孔流入到离心风机中。
在一个具体的实施例中，设置转动支架210，可使得机头机构100实现摇头转动，具体地，转动支架210包括连接部2102，两个连接部2102设置在机壳102的轴向两侧，通过连接部2102可将机壳102转动连接至转动支架210上，从而可实现机头机构100的俯仰摇头或者横向摆动。在此基础上，由于离心风机106需要供电，在发生转动时，对导线的布置存在一定的限制，本方案直接利用连接部2102，将导线沿连接部2102延伸，从而向外引出，以实现对离心风机106的供电。
需要说明的是，转动支架210整体呈Y型，从而使得机头机构100的尺寸并不会受到较大的限制。
辅进风口1026直接绕转动支架210的转轴设置，即第一进风孔126在布置时会避开支点位置，从而降低支点对进风量的影响，提高进风效率。
在机壳102一侧的连接部2102上设置转动电机212，可为机壳102的 转动进行驱动。
离心风机106包括驱动电机1062和叶轮1064，驱动电机1062可驱动叶轮1064转动，从而实现向外送风，本方案中，对转动电机212和驱动电机1062的位置进行限制，限制二者设置在机壳102的相对两侧，从而使得整个产品的重心靠近中轴线，保持结构的稳定。
在一个实施例中，如图9所示，在连接部2102上设置过线孔2104，可供离心风机106的导线向外引出，由于采用过线孔2104的形式，可将导线从内向外引出，再与控制器或电源相连。
在另一个实施例中，在转动支架210上设置过线槽2106，可将导线放置于过线槽2106中，过线槽2106为导线提供空间，且实现结构保护，以便于导线隐藏在过线槽2106中，保证电路的畅通。
进一步地，在过线槽2106上设置限位扣2108，可对导线进行限位，防止脱落后落入机头机构100内部，提高使用安全性。
更具体地，对过线孔2104和过线槽2106中的任一者距离叶轮1064的转轴的距离在200mm以内，导线的路径更贴近于中心处，以便于导线的引出。
根据本申请提供的机头机构和风扇设备，凹陷板对空气可起到一定的导流效果，同时利用科恩达效应，使得空气会倾向于沿着壁面流动，从而实现了进风效率的提升。
在本申请中，术语“第一”、“第二”、“第三”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”则指两个或两个以上，除非另有明确的限定。术语“安装”、“相连”、“连接”、“固定”等术语均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；“相连”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置 或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本申请的限制。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (17)

  1. 一种机头机构，其中，包括：
    离心蜗壳，所述离心蜗壳内设有离心风机，所述离心蜗壳上设有风道出口以及风道进口；
    外板，沿轴向方向设于所述离心蜗壳的一侧，所述外板上设有与所述风道进口对应的外进风口；
    其中，所述外板包括凹陷板，所述凹陷板上设有多个第一进风孔。
  2. 根据权利要求1所述的机头机构，其中，所述凹陷板朝向所述离心蜗壳凹陷，且所述凹陷板的外壁面在过所述离心风机的转轴的截面上呈曲线状。
  3. 根据权利要求2所述的机头机构，其中，在过所述离心风机的转轴的截面上，所述凹陷板的外壁面与竖直方向所呈夹角不大于30°。
  4. 根据权利要求1所述的机头机构，其中，还包括：
    机壳，所述机壳的周向侧壁上设有主进风口和出风口，所述机壳的轴向壁面上设有辅进风口，所述出风口与所述风道出口对应设置，所述辅进风口与所述风道进口对应设置，由所述主进风口和所述辅进风口流入的空气，经所述风道进口流入所述离心蜗壳。
  5. 根据权利要求4所述的机头机构，其中，所述机壳具体包括：
    第一支撑罩和第二支撑罩，所述第一支撑罩和所述第二支撑罩连接后形成所述出风口和所述主进风口；
    其中，所述辅进风口设于所述第一支撑罩的轴向壁面和/或所述第二支撑罩的轴向壁面上。
  6. 根据权利要求5所述的机头机构，其中，所述辅进风口具体包括多个圆周阵列的第二进风孔。
  7. 根据权利要求5所述的机头机构，其中，还包括：
    过风罩，套设于所述机壳的外侧，所述过风罩上设有与所述主进风口对应的第一格栅部和/或与所述出风口对应的第二格栅部。
  8. 根据权利要求7所述的机头机构，其中，还包括：
    滤网结构，与所述第一格栅部对应设于过风罩的外侧。
  9. 根据权利要求8所述的机头机构，其中，所述过风罩的周向侧壁上设有与所述主进风口对应设置的安装槽，所述机头机构还包括：
    盖板格栅，与所述安装槽可拆卸连接，所述滤网结构设于所述盖板格栅和所述安装槽之间。
  10. 根据权利要求5所述的机头机构，其中，所述外板具体包括：
    第一侧板，设于所述第一支撑罩远离所述第二支撑罩的一侧；
    第二侧板，设于所述第二支撑罩远离所述第一支撑罩的一侧；
    其中，所述第一侧板和所述第二侧板上设有与所述辅进风口对应的外进风口。
  11. 根据权利要求4所述的机头机构，其中，所述机壳沿轴向方向的两端的轴向壁面上分别设有所述辅进风口。
  12. 根据权利要求4所述的机头机构，其中，还包括：
    辅滤结构，设于所述辅进风口处。
  13. 根据权利要求4所述的机头机构，其中，还包括：
    导向件，设于所述机壳的轴向方向的一端；
    其中，所述导向件朝向所述机壳的一侧设有导向板，空气通过所述导向板和所述凹陷板流入所述机壳，所述导向板与竖直方向之间的夹角为60°～90°。
  14. 根据权利要求13所述的机头机构，其中，所述导向板远离所述机头机构的一端的切线与竖直方向之间的夹角为小于40°。
  15. 一种风扇设备，其中，包括：
    落地支架，所述落地支架的顶部形成导向件；
    如权利要求1至14中任一项所述的机头机构，设于所述落地支架上。
  16. 根据权利要求15所述的风扇设备，其中，还包括：
    驱动机构，至少部分所述驱动机构设于所述导向件内，所述驱动机构包括：第一支撑件，与所述落地支架相连；转动电机，设于所述第一支撑件上，且所述转动电机的驱动端连接至第二支撑件，所述第二支撑件与所述机头机构相连；和/或
    转动机构，至少部分所述转动机构设于所述导向件内；
    其中，所述转动机构和所述驱动机构设于所述机头机构的沿轴向的相对两侧。
  17. 根据权利要求16所述的风扇设备，其中，所述转动机构和/或所述驱动机构的转轴位于所述机头机构中凹陷板的中心位置；所述机头机构和/或所述驱动机构的第一进风口绕所述转动机构的转轴设置。
PCT/CN2023/102391 2023-03-23 2023-06-26 机头机构和风扇设备 WO2024192909A1 (zh)

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WO2016036119A1 (ko) * 2014-09-03 2016-03-10 코웨이 주식회사 원심 송풍기
CN208040768U (zh) * 2017-11-23 2018-11-02 珠海格力电器股份有限公司 一种风道外壳、风道结构及塔扇
CN111121168A (zh) * 2020-01-15 2020-05-08 珠海格力电器股份有限公司 一种蜗壳结构及具有其的风机系统和空调器
CN212179011U (zh) * 2020-02-17 2020-12-18 海信（山东）空调有限公司 空调室内机
CN113757138A (zh) * 2020-06-05 2021-12-07 宁波方太厨具有限公司 用于空气净化器的风机系统及空气净化器
CN218581858U (zh) * 2022-11-29 2023-03-07 广东杉田科技有限公司 一种落地风扇

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* Cited by examiner, † Cited by third party
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WO2016036119A1 (ko) * 2014-09-03 2016-03-10 코웨이 주식회사 원심 송풍기
CN208040768U (zh) * 2017-11-23 2018-11-02 珠海格力电器股份有限公司 一种风道外壳、风道结构及塔扇
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