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WO2018157337A1 - Tête de ventilateur et ventilateur sans pales - Google Patents

Tête de ventilateur et ventilateur sans pales Download PDF

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Publication number
WO2018157337A1
WO2018157337A1 PCT/CN2017/075361 CN2017075361W WO2018157337A1 WO 2018157337 A1 WO2018157337 A1 WO 2018157337A1 CN 2017075361 W CN2017075361 W CN 2017075361W WO 2018157337 A1 WO2018157337 A1 WO 2018157337A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
fan head
air outlet
air
fan
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.)
Ceased
Application number
PCT/CN2017/075361
Other languages
English (en)
Chinese (zh)
Inventor
李忠华
程杰锋
魏喜明
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.)
Midea Group Co Ltd
Original Assignee
Midea Group Co Ltd
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 Midea Group Co Ltd filed Critical Midea Group Co Ltd
Priority to PCT/CN2017/075361 priority Critical patent/WO2018157337A1/fr
Priority to CN201780001086.1A priority patent/CN107636317B/zh
Publication of WO2018157337A1 publication Critical patent/WO2018157337A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F04D29/40—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
    • F04D29/66—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
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel

Definitions

  • the invention relates to the field of living appliances, in particular to a fan head and a bladeless fan.
  • the bladeless fan includes a fan head.
  • the fan head is provided with a duct and an air outlet.
  • the airflow easily forms a large wind noise at the air outlet, thereby reducing the user experience.
  • the present invention aims to at least solve one of the technical problems existing in the related art. To this end, the present invention needs to provide a fan head and a bladeless fan.
  • a fan head is used for a bladeless fan, the fan head includes a first cavity and a second cavity which are both in a column shape, and the second cavity is located in the first cavity a first air outlet is defined in a side of the first cavity, and a second air outlet is opened along a length of the second cavity.
  • the opening direction of the second air outlet is different from the opening direction of the first air outlet, and the bottom surface of the second cavity is provided with an air inlet communicating with the second air outlet, and the inner surface of the first cavity is An air flow passage connecting the second air outlet and the first air outlet is formed between outer surfaces of the second cavity.
  • the airflow enters and exits the second cavity through the air inlet, and is sprayed outward through the second air outlet, the air flow passage and the first air outlet, so that the flow path of the airflow inside the fan head is increased. It can eliminate or weaken the noise.
  • the inner and outer two-layer cavity can also play the sound insulation function, thereby realizing the low noise fan head and improving the user experience.
  • the first air outlet has a slit shape
  • the second air outlet has a slit shape
  • the fan head includes a deflector located in the first cavity, the baffle connecting one side edge of the first air outlet and one side of the second air outlet An edge, the baffle being spaced opposite the inner surface of the first cavity to form the airflow passage.
  • the number of the air flow passages is two
  • the fan head includes a connecting partition
  • the connecting partition connects the inner surface of the first cavity and the outer side of the second cavity The surfaces are spaced apart from the two airflow passages.
  • the first cavity is provided with a first columnar chamber along a length of the first cavity, and the second cavity is located in the first columnar cavity, the first The second cavity is provided with a second columnar chamber along the length direction of the second cavity, the number of the first air outlets is two, and the number of the second air outlets is two.
  • the first cylindrical chamber communicates with the two second air outlets and the two first air outlets, and the second cylindrical chamber communicates with the air inlet and the two second air outlets, An inner surface of the first cavity, a surface of the baffle opposite the inner surface of the first cavity, and an outer surface of the second cavity opposite the inner surface of the first cavity A portion of the first cylindrical chamber defined as the air flow passage.
  • the first air outlet has a thickness gap ranging from 0.5 to 3 mm.
  • the second air outlet has a thickness gap ranging from 0.5 to 3 mm.
  • the second cavity is a constant pressure chamber.
  • the first cavity is a constant pressure chamber.
  • the inner surface of the first cavity is a Coanda surface
  • the surface of the baffle opposite the inner surface of the first cavity is a Coanda surface
  • the ke The Enda surface has an air ejector effect and an increase in the air volume of the first air outlet.
  • the Coanda surface is a slowly transitioning surface and is used to gradually increase the flow rate of the gas stream.
  • the second cavity has an inner diameter ranging from 30 to 60 mm.
  • the fan head includes a first sealing plate and a second sealing plate, the first sealing plate sealingly connecting the lower end inner surface of the first cavity and the lower end of the second cavity And a second sealing plate sealingly connecting the upper end of the first cavity and the upper end of the second cavity.
  • a bottom surface of the second cavity is formed with a flange surrounding the air inlet
  • the fan head includes a seal
  • the seal includes an upper end and a lower end
  • the upper end sealingly connects the a flange having a tapered expanded configuration
  • the fan head includes a connecting rib that connects an inner surface of the first cavity and a surface of the baffle opposite the inner surface of the first cavity.
  • the size of the connecting ribs satisfies the following condition: 0 ⁇ L3 ⁇ 4, 0 ⁇ W3 ⁇ 4, L3 represents the length of the connecting rib, and W3 represents the width of the connecting rib.
  • a bladeless fan according to an embodiment of the present invention includes the fan head of any of the above embodiments.
  • the airflow enters and exits the second cavity through the air inlet, and is sprayed outward through the second air outlet, the air flow passage, and the first air outlet, so that the flow path of the airflow inside the fan head Increase, eliminate Or weaken the effect of noise, at the same time, the inner and outer two-layer cavity can also play the sound insulation function, thereby achieving a low-noise fan head and improving the user experience.
  • FIG. 1 is a schematic perspective view of a fan head according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a fan head according to an embodiment of the present invention.
  • FIG 3 is another schematic cross-sectional view of a fan head according to an embodiment of the present invention.
  • FIG. 4 is a further cross-sectional view of the fan head of the embodiment of the present invention.
  • Fig. 5 is a schematic cross-sectional view showing another embodiment of the fan head according to the embodiment of the present invention.
  • Fig. 6 is a schematic cross-sectional view showing still another embodiment of the fan head according to the embodiment of the present invention.
  • Fig. 7 is a schematic perspective view of a sealing member of a fan head according to an embodiment of the present invention.
  • Fig. 8 is still another schematic cross-sectional view of a fan head according to an embodiment of the present invention.
  • FIG. 9 is a perspective view of a bladeless fan according to an embodiment of the present invention.
  • Fig. 10 is a perspective view showing the base of the bladeless fan according to the embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a fan head 10 is used for the bladeless fan 100.
  • the fan head 10 includes a first cavity 102 and a second cavity 104 each having a columnar shape.
  • the second cavity 104 is located in the first cavity 102.
  • the side surface of the first cavity 102 is along the length direction of the first cavity 102.
  • a first air outlet 106 is opened, and a side of the second cavity 104 is provided with a second air outlet 108 along a length direction B2 of the second cavity 104.
  • the opening direction A2 of the second air outlet 108 is different from the first air outlet 106. Opening direction A1 (see Figure 3).
  • the bottom surface of the second cavity 104 is provided with an air inlet 110 communicating with the second air outlet 108.
  • the inner surface 112 of the first cavity 102 and the outer surface 114 of the second cavity 104 are formed to communicate with the second air outlet 108 and The air flow passage 116 of the first air outlet 106.
  • the airflow enters and exits the second cavity 104 from the air inlet 110, and is sprayed outward through the second air outlet 108, the air flow passage 116, and the first air outlet 106, so that the airflow is in the fan.
  • the flow path inside the head 10 is increased to eliminate or attenuate the noise.
  • the inner and outer two-layer cavities can also function as sound insulation, thereby realizing the low-noise fan head 10 and improving the user experience.
  • the opening direction A2 of the second air outlet 108 is different from the opening direction A1 of the first air outlet 106, a labyrinth soundproof cavity is formed inside the fan head 10, which is more favorable for noise reduction of the fan head 10.
  • the opening direction A2 of the second air outlet 108 and the opening direction A1 of the first air outlet 106 are at an angle greater than 90 degrees and less than 180 degrees, so that the flow path of the airflow in the fan head 10 is long and the fan head 10 The direction of the wind is moderate.
  • the fan head 10 can be mounted on the base of the bladeless fan 100, and a high-pressure airflow is provided by the base.
  • the high-pressure airflow enters the interior of the second cavity 104 through the air inlet, and enters the second air outlet 108 and the airflow passage 116.
  • An air outlet 106 is ejected outwardly, and the outwardly ejected air stream entrains the air in the vicinity of the first air outlet 106 to form a wind perceived by the user.
  • the columnar first cavity 102 and the second cavity 104 may be provided in a cylindrical shape, a rectangular parallelepiped shape or the like.
  • the first cavity 102 and the second cavity 104 are both cylindrical, and thus, the cylindrical first cavity 102 can reduce the probability of the user being injured by accidental collision with the fan 10.
  • the first cavity 102 and the second cavity 104 are disposed coaxially, which reduces the space occupied by the fan head 10.
  • the length direction B1 of the first cavity 102 is parallel to the length direction B2 of the second cavity 104.
  • the first air outlet 106 has a slit shape
  • the second air outlet 108 has a slit shape
  • the side area of the first cavity 102 and the second cavity 104 can be fully utilized, and the air outlet area and the air flow speed of the air outlet can be increased.
  • the length L1 of the slit-shaped air outlet is larger than the width W1 of the air outlet.
  • the slit-shaped air outlet may be a single continuous air outlet (as shown in FIG. 5), or may be a plurality of air outlets spaced apart along the length of the cavity.
  • the slit-shaped first air outlet 106 and the second air outlet 108 are both a single continuous air outlet.
  • the fan head 10 includes a deflector 118 located in the first cavity 102.
  • the deflector 118 connects the one side edge of the first air outlet 106 and the second air outlet 108.
  • the baffles 118 are spaced from the inner surface 112 of the first cavity 102 to form an airflow passage 116.
  • the baffles 118 are positioned such that the airflow is further rectified as it passes through the airflow passages 116, reducing airflow disturbances and reducing the chance of additional noise from the fan head 10.
  • the length of the deflector 118 is longer than the length of the second air outlet 108, and is equivalent to the length of the first air outlet 106, which facilitates full-body rectification of the airflow ejected from the inside of the fan head 10 to the outside.
  • the cross-sectional shape of the deflector 118 in the longitudinal direction perpendicular to the fan head has a quadratic curve shape, thereby reducing the resistance of the airflow when flowing on the surface of the deflector 118, and the airflow is smoother.
  • the number of airflow channels 116 is two
  • the fan head 10 includes a connection barrier 120 that connects the inner surface 112 of the first cavity 102 and the outer surface 114 of the second cavity 104 and The two air flow passages 116 are separated.
  • the two airflow passages 116 increase the air outlet area of the fan head 10
  • the connection partition 120 is arranged to prevent the airflows in the two airflow passages 116 from interfering with each other to generate additional noise.
  • the second cavity 104 is located in the first cavity 102, and an annular channel 122 is formed between the outer surface 114 of the second cavity 104 and the inner surface 112 of the first cavity 102.
  • the first cavity 102 is provided with two first air outlets 106 spaced apart on opposite sides of the radial direction L2 of the annular passage 122, and the second cavity 104 is open with two second sides separated on both sides of the radial direction L2 of the annular passage 122.
  • the air outlet 108, the connecting partition 120 connects the inner surface 112 of the first cavity 102 and the outer surface 114 of the second cavity 104 in the radial direction L2 of the annular passage 122 to space the annular passage 122 into two air flow passages 116.
  • the first cavity 102 defines a first cylindrical chamber 124 along the length direction B1 of the first cavity 102
  • the second cavity 104 is located in the first cylindrical chamber 124
  • the second cavity 104 A second columnar chamber 126 is opened along the length direction B2 of the second cavity 104.
  • the number of the first air outlets 106 is two
  • the number of the second air outlets 108 is two
  • the first columnar chambers 124 are connected to two.
  • the second air outlet 108 and the two first air outlets 106 communicate with the air inlet 110 and the two second air outlets 108.
  • the inner surface 112 of the first cavity 102, the surface 127 of the baffle 118 opposite the inner surface 112 of the first cavity 102, and the inner surface of the first cavity 102 A portion of the first cylindrical chamber 124 defined by the outer surface of the opposing second cavity 104 is defined as the air flow passage 116.
  • the fan head 100 can be ventilated up and down, and the wind output area is ensured.
  • the second columnar chamber 126 ensures that the airflow enters the second cavity 104 and maintains a certain pressure.
  • the second columnar chamber 126 is a constant pressure chamber, which facilitates the first air outlet 106 and the second air outlet 108. The wind is even.
  • the first cylindrical chamber 124 is also a constant pressure chamber. Similarly, the first cylindrical chamber 124 ensures uniform air flow from the first air outlet 106.
  • the constant pressure chamber means that the pressure of each gas in the chamber is almost the same, and there is no big difference.
  • the difference between the set range can be determined by the parameters such as the size and shape of the air inlet and outlet of the control chamber, and the intake air volume of the chamber.
  • the air inlet 110 is located at the bottom surface of the second cylindrical chamber 126, the second air outlet 108 is located at the side of the second cylindrical chamber 126, and the first air outlet 106 is located at the side of the first cylindrical chamber 124.
  • the static pressure chamber is realized in the first cavity 102 and the second cavity 104, and the dynamic pressure is weakened, so that the air outlets of the first air outlet 106 and the second air outlet 108 are uniform in the up and down direction.
  • the up and down direction of the first air outlet 106 is the same as the length direction B1 of the first cavity 102.
  • the up and down direction of the second air outlet 108 is the same as the length direction B2 of the second cavity 104.
  • the second cylindrical chamber 126 has a cylindrical shape, and the inner surface 112 of the first cavity 102 constituting the air flow passage 116 is a circular arc surface.
  • the flow resistance of the airflow in the airflow passage 116 is small, and the fan head 100 is more uniform in airflow.
  • the first cylindrical chamber 124 is cylindrical.
  • the thickness gap d1 of the first air outlet 106 ranges from 0.5 to 3 mm.
  • the fan head 100 is ensured to have a good airflow ejector effect.
  • the gap of the first air outlet 106 is limited, and the size of the first air outlet 106 (nozzle) gap determines the size of the ejector airflow, and the gap of the first air outlet 106 limited to the above range is such that the size of the ejector airflow is moderate. Meet the design requirements.
  • d1 may be one of 0.5 mm, 1 mm, 1.2 mm, 1.8 mm, 2 mm, 2.5 mm, and 3 mm.
  • d1 may be one of 0.5 mm, 1 mm, 1.2 mm, 1.8 mm, 2 mm, 2.5 mm, and 3 mm.
  • other numbers may be selected in the above range, and no specific limitation is imposed herein. .
  • the thickness gap d2 of the second air outlet 108 ranges from 0.5 to 3 mm.
  • the fan head 100 is ensured to have a good airflow ejector effect.
  • the gap of the second air outlet 108 is limited, and the size of the second air outlet 108 (nozzle) gap determines the size of the ejector airflow, and the gap of the second air outlet 108 limited to the above range is such that the size of the ejector airflow is moderate. Meet the design requirements.
  • d2 may be one of 0.5 mm, 1 mm, 1.2 mm, 1.8 mm, 2 mm, 2.5 mm, and 3 mm.
  • d1 and d2 may be equal or unequal, depending on design requirements.
  • the second cavity 104 is a constant pressure cavity.
  • the pressure in the second cavity 104 is ensured, the static pressure chamber is realized, the dynamic pressure of the airflow of the fan power system connected to the fan 100 is weakened, and the airflow is uniformly flowed to the second air outlet 108 (the nozzle). Further, it is ejected from the first air outlet 106, which is a uniform airflow, and ensures that the airflow of the fan head 100 is uniform at the upper and lower positions, thereby improving the air blowing effect.
  • the constant pressure chamber is provided with a constant pressure chamber.
  • the second cylindrical chamber 126 opened by the second chamber 104 is a constant pressure chamber.
  • the first cavity 102 is a constant pressure cavity.
  • the pressure in the first cavity 102 is ensured, the static pressure chamber is realized, and the dynamic pressure of the airflow of the fan power system connected to the fan 100 is weakened, thereby ensuring that the airflow uniformly flows outside the fan head 100, so that the user feels Uniform natural wind, while ensuring that the fan head 100 up and down position is uniform, improving the wind effect.
  • the constant pressure chamber is provided with a constant pressure chamber.
  • the first cylindrical chamber 124 opened by the first chamber 102 is a constant pressure chamber.
  • the inner surface 112 of the first cavity 102 is a Coanda surface
  • the surface 127 of the baffle 118 opposite the inner surface 112 of the first cavity 102 is a Coanda surface, Coanda
  • the surface has an air flow ejector effect and an increase in the air volume of the first air outlet 106.
  • the airflow passes through the two Coanda surfaces as it is ejected outward from the airflow passage 116, so that the jetted airflow will drive the external airflow at the first air outlet 106, increasing the fan head 10
  • the air outlet noise of the first air outlet 106 is low, which ensures a large air volume and a small noise fan head 100, which improves the user experience.
  • the Coanda surface is a surface having a Coanda effect.
  • the Coanda surface is a slowly transitioning surface and is used to gradually increase the flow rate of the gas stream.
  • the Coanda surface can further optimize airflow ejector.
  • the curvature of the transition curve of the Coanda surface cannot be abruptly changed and gradually changes.
  • the inner diameter R1 of the second cavity 104 ranges from 30 to 60 mm.
  • the second cavity 104 can better match the air volume of the fan power system connected to the fan 100, and can ensure that the second cavity 104 is a constant pressure cavity, and at the same time, the second air outlet 108 is also considered.
  • the inner diameter R1 is the radius.
  • the inner diameter R1 of the second cavity may be among 30 mm, 35 mm, 40 mm, 50 mm, and 60 mm.
  • the inner diameter R1 of the second cavity may be among 30 mm, 35 mm, 40 mm, 50 mm, and 60 mm.
  • other numbers may be selected in the above range, and no specific limitation is imposed herein.
  • the inner diameter R1 of the second cavity refers to the diameter of the second cylindrical chamber 126.
  • FIGS. 3 and 4 are cross sections of the fan head 10 in a direction perpendicular to the length of the fan head.
  • d is equal to one of 0R (ie equal to 0), 0.09R, 0.1R, 0.12R, and 0.15R.
  • 0R ie equal to 0
  • 0.09R 0.09R
  • 0.1R 0.12R
  • 0.15R 0.15R
  • the airflows exiting from the two first air outlets 106 on both sides of the first cavity 102 can be reasonably collected in the middle, so as not to cross the flow in the middle, so that the airflow is evenly forwarded. Boasting, improving the user experience.
  • d3 is equal to one of 0d, 0.5d, 0.15d, 0.18d, and 2d.
  • d3 is equal to one of 0d, 0.5d, 0.15d, 0.18d, and 2d.
  • other numbers may be selected in the above range, and no specific limitation is imposed herein.
  • the fan head 10 includes a first sealing plate 128 and a second sealing plate 130.
  • the first sealing plate 128 sealingly connects the lower end inner surface 112 of the first cavity 102 with the second cavity.
  • the lower end outer surface 114 of the 104, the second sealing plate 130 sealingly connects the upper end of the first cavity 102 and the upper end of the second cavity 104.
  • the airflow outside the fan head 10 can only enter from the air inlet 110, and then sprayed to the outside of the fan head 10 through the second air outlet 108, the air flow passage 116 and the first air outlet 106, thereby ensuring the working efficiency of the fan head 10.
  • first sealing plate 128 has an annular sealing plate
  • second sealing plate 130 has a flat sealing plate
  • the bottom surface of the second cavity 104 is formed with a flange 132 surrounding the air inlet 110.
  • the fan head 10 includes a sealing member 134.
  • the sealing member 134 includes an upper end 136 and a lower end 138.
  • the upper end 136 seals the connecting flange 132 and the lower end 138 has a tapered expanded configuration.
  • the lower end 138 can be used to seal the outlet end of the power system coupled to the fan head 10, and the lower end 138 of the conical expansion configuration facilitates the lower end 138 when the fan head 10 is mounted on the corresponding base.
  • the outlet end of the system, and the fan head 10 is more closely attached to the base, so that the arrangement of the sealing member 134 can reduce the probability of airflow pouring from the fan head 10 into the cavity of the base connected to the fan head 10, thereby reducing the probability The noise of the fan head.
  • the fan head 10 is generally longer than the base. If the sealing member 134 is absent, since the airflow path in the fan head 10 is long, the airflow is easy to be made. Inverted in the cavity of the pedestal, forming a large wind noise, and the wind effect is poor.
  • the sealing member 134 is disposed such that the sealing member 134 and the outlet end of the power system, and the sealing member 134 and the flange 132 are in a sealed and sealed state, thereby solving the above problems.
  • the end surface of the upper end 136 is provided with a positioning groove 140.
  • the outer side of the flange 132 can be formed with a card portion (not shown), and the card portion can be inserted into the positioning groove 140.
  • the seal 134 may be a silicone sealed hose having a hardness in the range of 50-60 and a moderately elastic stretch.
  • the fan head 100 includes a connecting rib (not shown) that connects the inner surface 112 of the first cavity 102 and the surface of the baffle 118 opposite the inner surface 112 of the first cavity 102. 127.
  • the arrangement of the connecting ribs can control the thickness gap of the first air outlet 106 and ensure the strength of the entire air duct.
  • the connection of the connecting ribs can control the thickness gap d1 of the first air outlet 106.
  • the connecting ribs may not be too dense, and preferably, the distance between two adjacent connecting ribs may not be less than 50 mm.
  • the size of the connecting ribs satisfies the following condition: 0 ⁇ L3 ⁇ 4, 0 ⁇ W3 ⁇ 4, L3 represents the length of the connecting rib, and W3 represents the width of the connecting rib.
  • the size of the connecting rib does not adversely affect the airflow of the fan head 100.
  • the airflow AA enters the second cavity 104 from the air inlet 110 and passes through the second air inlet.
  • 108 enters two airflow passages 116, and when the airflow AA is sprayed outward from the airflow passage 116, passing through the two Coanda surfaces, the Coanda surface has a function of airflow adhering such that the injected airflow AA is at the first air outlet 106 It will drive the external airflow and have the effect of ejector, increasing the air volume of the fan head 10.
  • the air inlet, the chamber, the passage, and the air outlet of the fan head 100 through which the air flow AA passes constitute the air passage of the fan head 100.
  • the fan head 100 of the present invention has a cylindrical shape. It can be understood that in other embodiments, the fan head may also have an outer shape of an elliptical shape and other deformed structures.
  • the outer shape of the first cavity 102 can serve as the outer shape of the fan head 100. It should be noted that, in conjunction with FIG. 8, when designing the outer shape of the first cavity 102, the first cavity 102 is located at a portion 142 between the inner sides of the two first air outlets 106 (for convenience of explanation, the portion in FIG. 8 The shape of the 142 for black filling has substantially no effect on the airflow of the fan head 100. Therefore, this portion 142 can be formed into a desired shape according to the needs of the industrial design, so that the fan head is beautiful and generous.
  • the bladeless fan 100 of the embodiment of the present invention includes any of the above embodiments. Fan head 10.
  • the airflow enters and exits the second cavity 104 from the air inlet 110, and is sprayed outward through the second air outlet 108, the air flow passage 116, and the first air outlet 106, so that the air flow is
  • the flow path inside the fan head 10 is increased to eliminate or weaken the noise.
  • the inner and outer two-layer cavities can also function as sound insulation, thereby realizing the low noise fan head 10 and improving the user experience.
  • the bladeless fan 100 includes a power system 21 and a base 20.
  • the power system 21 is housed in the base 20, and the fan head 10 is disposed on the base 20.
  • the base 20 includes a housing 22 including a wall 221, and an air inlet 222 is defined in the wall 221, and the power system 21 draws in air through the air inlet 222 to establish a high-pressure airflow and feed it to the fan head.
  • the air inlets 222 are arranged in a plurality of spaced aperture arrays 224.
  • a plurality of aperture arrays 224 are spaced apart along the circumference of the housing 22 to achieve omnidirectional intake of the susceptor 20.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

Landscapes

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

Abstract

L'invention concerne une tête de ventilateur et un ventilateur sans pales, la tête de ventilateur comprend une première cavité (102) et une seconde cavité (104) ayant chacune une forme de colonne. La seconde cavité (104) est disposée dans la première cavité (102). Une face latérale de la première cavité (102) est pourvue d'une première sortie d'air (106) le long d'une direction de longueur de la première cavité (102). Une face latérale de la seconde cavité (104) est pourvue d'une seconde sortie d'air (108) le long d'une direction de longueur de la seconde cavité (104). Une direction d'ouverture de la seconde sortie d'air (108) est différente d'une direction d'ouverture de la première sortie d'air (106). Une face inférieure de la seconde cavité (104) est pourvue d'une entrée d'air (110) qui est en communication avec la seconde sortie d'air (108). Un passage d'écoulement d'air (116) qui est en communication avec la seconde sortie d'air (108) et la première sortie d'air (106) est formé entre une surface interne de la première cavité (102) et une surface externe de la seconde cavité (104). Dans un ventilateur sans pales ayant la tête de ventilateur, le flux d'air entre dans la seconde cavité (104) à travers l'entrée d'air (110) et est éjecté vers l'extérieur à travers la seconde sortie d'air (108), le passage d'écoulement d'air (116) et la première sortie d'air (106), de sorte qu'un trajet d'écoulement du flux d'air dans la tête de ventilateur augmente pour éliminer ou affaiblir le bruit et, en même temps, les cavités à double couche interne et externe peuvent également jouer le rôle d'isolation sonore, améliorant ainsi l'expérience utilisateur.
PCT/CN2017/075361 2017-03-01 2017-03-01 Tête de ventilateur et ventilateur sans pales Ceased WO2018157337A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2017/075361 WO2018157337A1 (fr) 2017-03-01 2017-03-01 Tête de ventilateur et ventilateur sans pales
CN201780001086.1A CN107636317B (zh) 2017-03-01 2017-03-01 扇头及无叶风扇

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/075361 WO2018157337A1 (fr) 2017-03-01 2017-03-01 Tête de ventilateur et ventilateur sans pales

Publications (1)

Publication Number Publication Date
WO2018157337A1 true WO2018157337A1 (fr) 2018-09-07

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Country Status (2)

Country Link
CN (1) CN107636317B (fr)
WO (1) WO2018157337A1 (fr)

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WO2023007850A1 (fr) * 2021-07-27 2023-02-02 シャープ株式会社 Soufflante
WO2023007851A1 (fr) * 2021-07-27 2023-02-02 シャープ株式会社 Procédé de soufflage d'air

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IT201700072887A1 (it) * 2017-06-29 2018-12-29 De Longhi Appliances Srl Ventilatore
CN108591124B (zh) * 2018-06-29 2024-06-07 深圳融昕医疗科技有限公司 风机装置及应用该风机装置的呼吸机
CN110439868A (zh) * 2019-06-17 2019-11-12 东莞市卓奇峰智能科技有限公司 柱流背喷扩流装置
CN111075741B (zh) * 2019-10-31 2025-09-30 东莞市卓奇峰智能科技有限公司 柱流背喷扩流无叶空气净化扇
JP7620829B2 (ja) * 2021-09-02 2025-01-24 パナソニックＩｐマネジメント株式会社 送風機
KR20230116146A (ko) * 2022-01-27 2023-08-04 삼성전자주식회사 송풍 장치 및 송풍 장치의 작동 방법

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* Cited by examiner, † Cited by third party
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WO2023007851A1 (fr) * 2021-07-27 2023-02-02 シャープ株式会社 Procédé de soufflage d'air

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