WO2022205767A1 - Roue éolienne à flux axial, ventilateur à flux axial et climatiseur - Google Patents

Roue éolienne à flux axial, ventilateur à flux axial et climatiseur Download PDF

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Publication number
WO2022205767A1
WO2022205767A1 PCT/CN2021/116188 CN2021116188W WO2022205767A1 WO 2022205767 A1 WO2022205767 A1 WO 2022205767A1 CN 2021116188 W CN2021116188 W CN 2021116188W WO 2022205767 A1 WO2022205767 A1 WO 2022205767A1
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WIPO (PCT)
Prior art keywords
axial flow
flow fan
axial
air
trailing edge
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PCT/CN2021/116188
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English (en)
Chinese (zh)
Inventor
易正清
程超
马列
彭杰林
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广东美的制冷设备有限公司
美的集团股份有限公司
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Publication of WO2022205767A1 publication Critical patent/WO2022205767A1/fr

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    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • 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

Definitions

  • the present application relates to the technical field of air conditioning, and in particular, to an axial flow fan wheel, an axial flow fan and an air conditioner.
  • an axial flow fan In the field of air conditioning technology, an axial flow fan includes a hood, and a wind wheel is arranged in the hood. Most of the blades of the wind wheel are flat, and the flat blades cannot suppress the backflow of the air flow during the air supply process, which leads to the failure of the axial flow fan. The air supply efficiency is low and the noise is large.
  • the first objective of the present application is to propose an axial flow fan wheel, which has the advantages of high air supply efficiency and low noise.
  • the second object of the present application is to provide an axial flow fan having the above axial flow fan wheel.
  • the third object of the present application is to provide an air conditioner having the above-mentioned axial flow fan.
  • An axial-flow wind turbine includes a hub and a plurality of blades, the plurality of blades are arranged on the hub at intervals in the circumferential direction, each of the blades has a pressure surface and a suction surface arranged oppositely, and each of the blades has a pressure surface and a suction surface.
  • the tip of each of the blades is provided with a trailing edge extending toward one side of the suction surface, and the part where the pressure surface is connected to the hub is defined as a connecting line, from the first end of the connecting line to the third In the extension direction of the two ends, the thickness of the middle part of the trailing edge is greater than the thickness of both ends of the trailing edge.
  • the trailing edge extending toward the suction surface side at the tip of each blade, it is convenient for the trailing edge to suppress the backflow of the airflow at the tip, and the trailing edge can suppress the airflow
  • the effect of backflow at the blade tip is better, thereby further improving the air supply efficiency of the axial flow fan and further reducing the air supply noise.
  • the thickness of the middle part of the trailing edge is greater than the thickness of both ends of the trailing edge. In this way, the effect of the trailing edge to suppress the backflow of the air flow at the blade tip can be further enhanced, thereby further improving the air supply efficiency of the axial flow fan, and further reducing the air supply noise.
  • the thickness of the trailing edge first increases gradually and then decreases gradually.
  • the maximum thickness of the trailing edge is at least 0.2 times the thickness of the blade tip, and not more than 2 times the thickness of the blade tip.
  • the maximum thickness of the trailing edge is at least 0.5 times the thickness of the blade tip, and not more than 1 time the thickness of the blade tip.
  • the diameter of the outer contour of the hub is at least 0.2 times the diameter of the outer contour of the axial flow fan wheel, and does not exceed 0.6 times the diameter of the outer contour of the axial flow fan wheel.
  • the axial flow fan according to the embodiment of the present application includes: an outer frame, the outer frame is provided with an air flow channel, and a fixing seat is arranged in the air flow channel, and the fixing seat is connected to the air flow channel through a connecting arm.
  • the inner wall is connected; the motor, the motor is arranged on the fixed seat; the axial flow wind wheel, the axial flow wind wheel is the axial flow wind wheel according to the above, and the wheel hub is connected with the motor shaft of the motor to Driven to rotate by the motor.
  • the trailing edge extending toward the suction surface side at the tip of each blade, it is convenient for the trailing edge to suppress the backflow of the airflow at the tip, and the trailing edge can suppress the airflow at the tip.
  • the effect of blade tip recirculation is better, thereby further improving the air supply efficiency of the axial flow fan and further reducing the air supply noise.
  • the thickness of the middle part of the trailing edge is greater than the thickness of both ends of the trailing edge. In this way, the effect of the trailing edge to suppress the backflow of the air flow at the blade tip can be further enhanced, thereby further improving the air supply efficiency of the axial flow fan, and further reducing the air supply noise.
  • the orthographic projection surface of the hub covers the orthographic projection surface of the fixing seat, and the projection surface is a plane parallel to the cross-section of the hub.
  • the fixing seat is formed in a cylindrical shape, and the outer diameter of the fixing seat is smaller than the outer diameter of the hub.
  • a part of the wheel hub is covered on the fixing seat, and the wheel hub and the fixing seat cooperate to wrap the motor.
  • connecting arms there are a plurality of the connecting arms and are evenly spaced along the circumference of the hub.
  • a plurality of the connecting arms are bent in the same direction.
  • the plurality of blades are bent toward the same direction, and the bending direction of the plurality of blades is opposite to the bending direction of the plurality of connecting arms.
  • An air conditioner includes: a casing provided with an air inlet and an air outlet; an axial flow fan, the axial flow fan being the above-mentioned axial flow fan, the axial flow fan Located within the enclosure, the axial fan rotates to introduce air from the air inlet and out from the air outlet.
  • the trailing edge extending toward the suction surface side at the tip of each blade, it is convenient for the trailing edge to suppress the backflow of the airflow at the tip of the blade, and the trailing edge can suppress the airflow at the blade tip.
  • the effect of tip return is better, thereby further improving the air supply efficiency of the axial flow fan and further reducing the air supply noise.
  • the thickness of the middle portion of the trailing edge is greater than the thickness of both ends of the trailing edge. In this way, the effect of the trailing edge to suppress the backflow of the air flow at the blade tip can be further enhanced, thereby further improving the air supply efficiency of the axial flow fan, and further reducing the air supply noise.
  • a refrigeration system is provided in the casing, the refrigeration system includes an evaporator and a condenser, and the axial flow fan is set corresponding to the condenser; the casing is also set corresponding to the evaporator. the first fan.
  • FIG. 1 is a schematic structural diagram of an axial flow fan according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of another angle of an axial flow fan according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another angle of the axial flow fan according to an embodiment of the present application.
  • Fig. 4 is the partial enlarged view of A place in Fig. 3;
  • FIG. 5 is a schematic structural diagram of another angle of the axial flow wind wheel according to an embodiment of the present application.
  • Fig. 6 is the structural representation according to the opposite direction of the axial flow wind wheel in Fig. 3;
  • FIG. 7 is an exploded view of an axial flow fan according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a partial structure of an air conditioner according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of an air conditioner according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another angle of the air conditioner according to the embodiment of the present application.
  • Air conditioner 10000 Air conditioner 10000, Axial flow fan 1000,
  • Blade 2 pressure surface 21, concave surface 211, suction surface 22, convex surface 221, blade tip 23,
  • Connection line 4 first end 41, second end 42,
  • the air conditioner 10000 includes a casing 2000 and a heat exchange module, the heat exchange module is arranged in the casing 2000 , and the casing 2000 has an air inlet 2001 and an air outlet 2002 .
  • the heat exchange module may include a refrigeration system and a fan assembly, for example, the fan assembly may be an axial flow fan 1000, and the refrigeration system may include a heat exchanger.
  • the axial flow fan 1000 can drive the indoor air flow to enter the casing 2000 from the air inlet 2001, and flow out of the casing 2000 from the air outlet 2002, and the airflow exchanges heat with the heat exchanger in the casing 2000, thus, The airflow blown out from the air outlet 2002 is the airflow after heat exchange.
  • the air conditioner 10000 can be a split-type air conditioner.
  • the heat exchanger can cool or heat.
  • the heat exchange airflow is cold airflow.
  • the airflow blown from the air outlet 2002 can cool the room.
  • the heat exchanger is heating, the heat exchange air flow is a hot air flow, and the air flow blown out from the air outlet 2002 at this time can heat up the room.
  • there may be a plurality of heat exchangers the plurality of heat exchangers may be arranged at intervals along the height direction of the air conditioner 10000 , and the plurality of heat exchangers may also be arranged at intervals along the direction from the air inlet 2001 to the air outlet 2002 .
  • the air conditioner 10000 can also be an integrated air conditioner.
  • the heat exchanger can include a condenser and an evaporator.
  • the condenser can be used for heating
  • the evaporator can be used for cooling.
  • the heat exchange airflow is Cold airflow
  • the airflow blown from the air outlet 2002 can cool the room;
  • the condenser is heating
  • the heat exchange airflow is hot airflow, and the airflow blown from the air outlet 2002 can heat the room.
  • the condenser and the evaporator may be spaced apart along the height direction of the air conditioner 10000 , and the condenser and the evaporator may also be spaced apart in the direction from the air inlet 2001 to the air outlet 2002 .
  • the axial-flow wind turbine 100 includes a hub 1 and a plurality of blades 2 .
  • the plurality of blades 2 are arranged on the hub 1 at intervals in the circumferential direction, and each blade 2 has a relative
  • the pressure surface 21 and the suction surface 22 are provided, and the tip 23 of each blade 2 is provided with a trailing edge 3 extending toward one side of the suction surface 22 .
  • the part where the pressure surface 21 is connected to the hub 1 is defined as the connecting line 4 .
  • the thickness of the middle part of the trailing edge 3 is greater than The thickness of both ends of the trailing edge 3 .
  • the pressure surface 21 can be understood as the working surface of the blade 2, that is, the concave surface 211 shown in FIG. 1. After the airflow enters the axial flow wind wheel 100, the pressure surface 21 mainly pushes the airflow forward; the suction surface 22 can be understood as the blade 2, that is, the convex surface 221 shown in FIG. 1, the pressure of the airflow on the pressure surface 21 is greater than the pressure of the airflow on the suction surface 22.
  • the blades 2 can be used to drive the airflow entering the axial-flow rotor 100 to flow in the axial direction of the axial-flow rotor 100 , so that the airflow outside the axial-flow rotor 100 can be facilitated to continuously enter the axial-flow rotor 100 , so that the axial flow fan wheel 100 can realize the driving air flow from one position to another position.
  • the axial fan 100 can drive the airflow to flow from the air inlet 2001 of the casing 2000 to the air outlet 2002.
  • the airflow exchanges heat with the heat exchanger, and the axial fan 100 drives the heat-exchanged airflow to flow out of the air outlet 2002, so that the air conditioner 10000 can achieve the function of cooling or heating.
  • the axial fan 100 can also be used for ventilation in general factories, warehouses, offices, residences and other places, and can also be used for air coolers (air coolers), evaporators, condensers, spray drops, etc. .
  • the plurality of blades 2 can drive more airflow to flow in the axial direction of the axial-flow rotor 100 , so that more airflow outside the axial-flow rotor 100 can enter the axial-flow rotor 100 , so that the axial airflow
  • the wheel 100 can be implemented to drive more airflow from one location to another.
  • the air intake volume and the air output volume of the air conditioner 10000 can be increased.
  • the trailing edge 3 can be used to inhibit the backflow of the air flow at the blade tip 23 , thereby improving the air supply efficiency of the axial-flow wind wheel 100 and reducing the air supply noise.
  • each blade 2 is provided with a trailing edge 3 extending toward one side of the suction surface 22 , which can facilitate the trailing edge 3 to suppress the backflow of the airflow at the tip 23 , and enable the trailing edge 3 to inhibit the backflow of the airflow at the tip 23 .
  • the effect is better, thereby further improving the air supply efficiency of the axial flow fan wheel 100 and further reducing the air supply noise.
  • the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 .
  • the thickness of the middle portion of the trailing edge 3 may be H
  • the thickness of both ends of the trailing edge 3 may be h
  • the value of H is greater than the value of h.
  • the axial flow fan includes a hood, and a wind wheel is arranged in the hood. Most of the blades of the wind wheel are flat, and the flat blades cannot suppress the backflow of the air flow during the air supply process, resulting in the air supply of the axial flow fan. Low efficiency and high noise.
  • the trailing edge 3 extending toward the suction surface 22 at the tip 23 of each blade 2 , it is convenient for the trailing edge 3 to suppress the airflow at the blade tip 23 . backflow, and the effect of the trailing edge 3 in inhibiting the backflow of the air flow at the blade tip 23 is better, so as to further improve the air supply efficiency of the axial flow fan 100 and further reduce the air supply noise.
  • the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 . In this way, the effect of the trailing edge 3 to suppress the backflow of the air flow at the blade tip 23 can be further enhanced, thereby further improving the air supply efficiency of the axial fan wheel 100 and further reducing the air supply noise.
  • the thickness of the trailing edge 3 first increases gradually and then decreases gradually.
  • one end of the trailing edge 3 and the middle of the trailing edge 3 can be smoothly connected, and the other end of the trailing edge 3 is connected to the middle of the trailing edge 3.
  • the middle portion of the trailing edge 3 can also be smoothly transitioned, and thus, in the radial direction of the wheel hub 1 , one side of the trailing edge 3 can be in an arc shape as a whole.
  • the trailing edge 3 can be set so that the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 . Furthermore, the effect of the trailing edge 3 to suppress the backflow of the air flow at the blade tip 23 can be further enhanced, thereby further improving the air supply efficiency of the axial flow fan wheel 100 and further reducing the air supply noise.
  • the maximum thickness of the trailing edge 3 is at least 0.2 times the thickness of the blade tip 23 and not more than 2 times the thickness of the blade tip 23 .
  • the thickness of the blade tip 23 may be A0
  • the maximum thickness of the trailing edge 3 is at least 0.5 times the thickness of the blade tip 23 and not more than 1 time the thickness of the blade tip 23 .
  • A1/A0 0.5 to 1.0.
  • the diameter of the outer contour of the hub 1 is at least 0.2 times the diameter of the outer contour of the axial flow fan wheel 100 , and does not exceed the diameter of the outer contour of the axial flow fan wheel 100 0.6 times.
  • the diameter of the outer contour of the axial fan 100 is D1
  • the axial flow fan 100 according to the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 6 . It should be understood that the following descriptions are merely exemplary illustrations rather than specific limitations of the present application.
  • the axial-flow wind turbine 100 includes a hub 1 and a plurality of blades 2 .
  • the plurality of blades 2 are arranged on the hub 1 at intervals in the circumferential direction, and each blade 2 has a pressure surface 21 and a suction force arranged oppositely. face 22 , the tip 23 of each blade 2 is provided with a trailing edge 3 extending towards one side of the suction face 22 .
  • the part where the pressure surface 21 is connected to the hub 1 is defined as the connecting line 4 .
  • the thickness of the middle part of the trailing edge 3 is greater than The thickness of both ends of the trailing edge 3 .
  • the pressure surface 21 can be understood as the working surface of the blade 2, that is, the concave surface 211 shown in FIG. 1. After the airflow enters the axial flow wind wheel 100, the pressure surface 21 mainly pushes the airflow forward; the suction surface 22 can be understood as the blade 2, that is, the convex surface 221 shown in FIG. 1, the pressure of the airflow on the pressure surface 21 is greater than the pressure of the airflow on the suction surface 22.
  • the blades 2 can be used to drive the airflow entering the axial-flow rotor 100 to flow in the axial direction of the axial-flow rotor 100 , thereby facilitating the airflow outside the axial-flow rotor 100 to enter the axial-flow rotor 100 , Therefore, the axial flow fan 100 can realize the driving air flow from one position to another position.
  • the axial fan 100 can drive the airflow to flow from the air inlet 2001 of the casing 2000 to the air outlet 2002.
  • the airflow exchanges heat with the heat exchanger, and the axial fan 100 drives the heat-exchanged airflow to flow out of the air outlet 2002, so that the air conditioner 10000 can achieve the function of cooling or heating.
  • the axial fan 100 can also be used for ventilation in general factories, warehouses, offices, residences and other places, and can also be used for air coolers (air coolers), evaporators, condensers, spray drops, etc. .
  • the plurality of blades 2 can drive more airflow to flow in the axial direction of the axial-flow rotor 100 , so that more airflow outside the axial-flow rotor 100 can enter the axial-flow rotor 100 , so that the axial airflow
  • the wheel 100 can be implemented to drive more airflow from one location to another.
  • the air intake volume and the air output volume of the air conditioner 10000 can be increased.
  • the trailing edge 3 can be used to inhibit the backflow of the air flow at the blade tip 23 , thereby improving the air supply efficiency of the axial-flow wind wheel 100 and reducing the air supply noise.
  • each blade 2 is provided with a trailing edge 3 extending toward one side of the suction surface 22 , which can facilitate the trailing edge 3 to suppress the backflow of the airflow at the tip 23 , and enable the trailing edge 3 to inhibit the backflow of the airflow at the tip 23 .
  • the effect is better, thereby further improving the air supply efficiency of the axial flow fan wheel 100 and further reducing the air supply noise.
  • the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 .
  • the thickness of the middle portion of the trailing edge 3 may be H
  • the thickness of both ends of the trailing edge 3 may be h
  • the value of H is greater than the value of h.
  • the thickness of the trailing edge 3 first increases gradually and then decreases gradually.
  • one end of the trailing edge 3 and the middle of the trailing edge 3 can be smoothly connected, and the other end of the trailing edge 3 is connected to the middle of the trailing edge 3.
  • the middle portion of the trailing edge 3 can also be smoothly transitioned, and thus, in the radial direction of the wheel hub 1 , one side of the trailing edge 3 can be in an arc shape as a whole.
  • the trailing edge 3 can be set so that the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 . Furthermore, the effect of the trailing edge 3 to suppress the backflow of the air flow at the blade tip 23 can be further enhanced, thereby further improving the air supply efficiency of the axial flow fan wheel 100 and further reducing the air supply noise.
  • the maximum thickness of the trailing edge 3 is at least 0.2 times the thickness of the blade tip 23 and not more than 2 times the thickness of the blade tip 23 .
  • the thickness of the blade tip 23 may be A0
  • the diameter of the outer contour of the hub 1 is at least 0.2 times the diameter of the outer contour of the axial flow fan wheel 100 , and does not exceed 0.6 times the diameter of the outer contour of the axial flow fan wheel 100 .
  • the diameter of the outer contour of the axial fan 100 is D1
  • an axial flow fan 1000 includes an outer frame 200 , a motor 300 and an axial flow fan wheel 100 .
  • the outer frame 200 is provided with an air flow channel 201 , and a fixed seat is arranged in the air flow channel 201 202, the fixed seat 202 is connected with the inner wall of the air flow channel 201 through the connecting arm 203; the motor 300 is arranged on the fixed seat 202; The motor shaft is connected to be driven to rotate by the motor 300 .
  • the motor 300 can drive the hub 1 to rotate. Since the plurality of blades 2 are arranged on the hub 1 at intervals along the circumferential direction of the hub 1, the motor 300 can drive the plurality of blades 2 to rotate, and the plurality of blades 2 can rotate.
  • the driving air flows out from one end of the air flow channel 201 , and more air flows in from the other end of the air flow channel 201 , thereby realizing the air supply function of the axial flow fan 1000 .
  • the outer frame 200 may facilitate the setting of the air flow channel 201, on the one hand.
  • the air flow channel 201 can facilitate the storage of airflow; on the other hand, the air flow channel 201 can also facilitate the setting of a fixing seat 202 , and the fixing seat 202 can be used to support the motor 300 so that the motor 300 can work reliably.
  • the connecting arm 203 can facilitate fixing the fixing seat 202 in the air channel 201 .
  • the axial flow fan 1000 can be used for ventilation in general factories, warehouses, offices, residences, etc., and can also be used for air coolers (air coolers), evaporators, condensers, spray drops, etc., and there are also Mine axial flow fan 1000, anti-corrosion and explosion-proof axial flow fan 1000 adopts anti-corrosion materials and explosion-proof measures, and is matched with explosion-proof motor 300, which can be used to transport explosive, volatile and corrosive gases.
  • the axial flow fan 1000 can also be used in the split type air conditioner 10000 and the integrated type air conditioner 10000 .
  • the trailing edge 3 extending toward the side of the suction surface 22 at the tip 23 of each blade 2 , it is convenient for the trailing edge 3 to suppress the backflow of the airflow at the tip 23 .
  • the effect of the trailing edge 3 in inhibiting the backflow of the air flow at the blade tip 23 is better, thereby further improving the air supply efficiency of the axial flow wind wheel 100 and further reducing the air supply noise.
  • the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 . In this way, the effect of the trailing edge 3 to suppress the backflow of the air flow at the blade tip 23 can be further enhanced, thereby further improving the air supply efficiency of the axial fan wheel 100 and further reducing the air supply noise.
  • the orthographic projection surface of the wheel hub 1 covers the orthographic projection surface of the fixed seat 202 , and the projection surface is a plane parallel to the cross-section of the wheel hub 1 .
  • the cross section can be understood as a plane perpendicular to the axis of the hub 1, and the following cross sections are all interpreted in this way. Therefore, in the axial direction of the axial flow fan 1000, that is, in the flow direction of the air flow, the fixed seat 202 will not block the blades 2, thereby reducing the wind resistance of the air flow. On the one hand, energy can be saved; , the air supply volume of the axial flow fan 1000 can be increased, so that the air supply effect of the axial flow fan 1000 is better.
  • the fixing seat 202 may be formed in a cylindrical shape, and the outer diameter of the fixing seat 202 is smaller than the outer diameter of the wheel hub 1 .
  • the orthographic projection surface of the wheel hub 1 covers the orthographic projection surface of the fixing seat 202 , and the projection surface is a plane parallel to the cross-section of the wheel hub 1 .
  • the fixed seat 202 will not block the blades 2, so that the wind resistance of the air flow can be reduced.
  • the air supply volume of the axial flow fan 1000 can be increased, so that the air supply effect of the axial flow fan 1000 is better.
  • a part of the wheel hub 1 is covered on the fixing base 202 , and the wheel hub 1 and the fixing base 202 cooperate to wrap the motor 300 .
  • the orthographic projection surface of the hub 1 can cover the orthographic projection surface of the fixing seat 202 , and the projection surface is a plane parallel to the cross-section of the hub 1 .
  • the hub 1 and the fixed seat 202 can also protect the motor 300 so that dust and the like will not corrode the motor 300 , thereby prolonging the service life of the motor 300 .
  • each connecting arm 203 can be connected to the fixing base 202, and the other end of the connecting arm 203 can be connected to the outer frame 202.
  • a plurality of connecting arms 203 are arranged at intervals around the circumference of the fixing base 202.
  • the connecting arms 203 can strengthen the connection strength between the fixing base 202 and the outer frame 200 , and the plurality of connecting arms 203 evenly spaced can also guide the air flow to the air channel 201 , so that the air intake of the air channel 201 is smoother.
  • the plurality of connecting arms 203 are bent toward the same direction. Therefore, the airflow can be better guided to the air flow channel 201 , so that the air intake of the air flow channel 201 is smoother.
  • the plurality of blades 2 are bent in the same direction, and the bending direction of the plurality of blades 2 is opposite to the bending direction of the plurality of connecting arms 203 . Therefore, after the air flow enters the air flow channel 201, it is easy to be squeezed by the plurality of blades 2 and the plurality of connecting arms 203, thereby increasing the pressure in the air flow channel 201, so that the speed of the airflow discharged from the air flow channel 201 increases. Therefore, the air outlet speed of the axial flow fan 1000 of the present application is relatively large.
  • the axial flow fan 1000 according to the embodiment of the present application will be described in detail below with reference to FIG. 7 . It should be understood that the following descriptions are merely exemplary illustrations rather than specific limitations of the present application.
  • the axial flow fan 1000 includes an outer frame 200, a motor 300 and an axial flow fan 100.
  • the outer frame 200 is provided with an air flow channel 201, and the air flow channel 201 is provided with a fixing seat 202.
  • the fixing seat 202 is connected by The arm 203 is connected to the inner wall of the air flow channel 201; the motor 300 is arranged on the fixed seat 202; Drive turns.
  • the motor 300 can drive the hub 1 to rotate. Since the plurality of blades 2 are arranged on the hub 1 at intervals along the circumferential direction of the hub 1, the motor 300 can drive the plurality of blades 2 to rotate, and the plurality of blades 2 can rotate.
  • the driving air flows out from one end of the air flow channel 201 , and more air flows in from the other end of the air flow channel 201 , thereby realizing the air supply function of the axial flow fan 1000 .
  • the outer frame 200 may facilitate the setting of the air flow channel 201, on the one hand.
  • the air flow channel 201 can facilitate the storage of airflow; on the other hand, the air flow channel 201 can also facilitate the setting of a fixing seat 202 , and the fixing seat 202 can be used to support the motor 300 so that the motor 300 can work reliably.
  • the connecting arm 203 can facilitate fixing the fixing seat 202 in the air channel 201 .
  • the axial flow fan 1000 can be used for ventilation in general factories, warehouses, offices, residences, etc., and can also be used for air coolers (air coolers), evaporators, condensers, spray drops, etc., and there are also Mine axial flow fan 1000, anti-corrosion and explosion-proof axial flow fan 1000 adopts anti-corrosion materials and explosion-proof measures, and is matched with explosion-proof motor 300, which can be used to transport explosive, volatile and corrosive gases.
  • the axial flow fan 1000 can also be used in the split type air conditioner 10000 and the integrated type air conditioner 10000 .
  • the orthographic projection surface of the hub 1 covers the orthographic projection surface of the fixing seat 202 , and the projection surface is a plane parallel to the cross-section of the hub 1 . Therefore, in the axial direction of the axial flow fan 1000, that is, in the flow direction of the air flow, the fixed seat 202 will not block the blades 2, thereby reducing the wind resistance of the air flow. On the one hand, energy can be saved; , the air supply volume of the axial flow fan 1000 can be increased, so that the air supply effect of the axial flow fan 1000 is better.
  • the fixing seat 202 may be formed in a cylindrical shape, and the outer diameter of the fixing seat 202 is smaller than the outer diameter of the wheel hub 1 .
  • the orthographic projection surface of the wheel hub 1 covers the orthographic projection surface of the fixing seat 202 , and the projection surface is a plane parallel to the cross-section of the wheel hub 1 .
  • the fixed seat 202 will not block the blades 2, so that the wind resistance of the air flow can be reduced.
  • the air supply volume of the axial flow fan 1000 can be increased, so that the air supply effect of the axial flow fan 1000 is better.
  • a part of the wheel hub 1 is covered on the fixing seat 202 , and the wheel hub 1 and the fixing seat 202 cooperate to wrap the motor 300 .
  • the orthographic projection surface of the hub 1 can cover the orthographic projection surface of the fixing seat 202 , and the projection surface is a plane parallel to the cross-section of the hub 1 .
  • the hub 1 and the fixed seat 202 can also protect the motor 300 so that dust and the like will not corrode the motor 300 , thereby prolonging the service life of the motor 300 .
  • FIG. 7 there are a plurality of connecting arms 203 and are evenly spaced along the circumferential direction of the hub 1 .
  • the plurality of connecting arms 203 can strengthen the connection strength between the fixing base 202 and the outer frame 200 , and the plurality of connecting arms 203 evenly spaced can also guide the air flow to the air channel 201 , so that the air intake of the air channel 201 is smoother.
  • the plurality of connecting arms 203 are bent in the same direction. Therefore, the airflow can be better guided to the air flow channel 201 , so that the air intake of the air flow channel 201 is smoother.
  • an air conditioner 10000 includes a casing 2000 and an axial flow fan 1000.
  • the casing 2000 is provided with an air inlet 2001 and an air outlet 2002; the axial flow fan 1000 is based on the above The axial flow fan 1000 described above, the axial flow fan 1000 is arranged in the casing 2000 , and the axial flow fan 1000 rotates to introduce air from the air inlet 2001 and export it from the air outlet 2002 .
  • the trailing edge 3 extending toward the suction surface 22 at the tip 23 of each blade 2 , the trailing edge 3 can be facilitated to suppress the backflow of the airflow at the tip 23 , and The effect of the trailing edge 3 in suppressing the backflow of the air flow at the blade tip 23 is better, thereby further improving the air supply efficiency of the axial-flow wind wheel 100 and further reducing the air supply noise.
  • the thickness of the middle portion of the trailing edge 3 is greater than the thickness of both ends of the trailing edge 3 . In this way, the effect of the trailing edge 3 to suppress the backflow of the air flow at the blade tip 23 can be further enhanced, thereby further improving the air supply efficiency of the axial fan wheel 100 and further reducing the air supply noise.
  • the casing 2000 is provided with a refrigeration system, the refrigeration system includes an evaporator and a condenser, the axial fan 1000 is set corresponding to the condenser; the casing 2000 is also set with a first fan corresponding to the evaporator.
  • the condenser can be used for heating, and the evaporator can be used for cooling.
  • the first fan can drive the airflow from the air inlet 2003 to enter the casing 2000, and the airflow exchanges heat with the evaporator.
  • the airflow is cold airflow, and the airflow blown out from the air outlet 2004 can cool the room; when the condenser is heating, the axial flow fan 1000 can drive the airflow from the air inlet 2001 to enter the casing 2000, and the airflow exchanges heat with the condenser.
  • the hot air is hot air, and the air blown out from the air outlet 2002 can heat up the room.
  • the air outlet 2002 and the air outlet 2004 can be one, and of course, the air inlet 2001 and the air inlet 2003 can also be one.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plurality means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction between the two elements. .
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction between the two elements.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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

Abstract

Roue éolienne à flux axial (100), ventilateur à flux axial (1000) et climatiseur (10000). La roue éolienne à flux axial (100) comprend un moyeu (1) et une pluralité de pales (2). La pluralité de pales (2) est agencée sur le moyeu (1) à intervalles dans la direction circonférentielle ; chaque pale (2) présente une surface de pression (21) et une surface d'aspiration (22) qui sont disposées à l'opposé l'une de l'autre ; une pointe de pale (23) de la pale (2) est dotée d'un bord de queue (3) s'étendant en direction du côté de la surface d'aspiration (22) ; une partie reliant la surface de pression (21) au moyeu (1) est définie comme une ligne de liaison (4), et l'épaisseur de la partie médiane du bord de queue (3) est supérieure à l'épaisseur des deux extrémités du bord de queue (3) dans une direction d'extension d'une première extrémité (41) de la ligne de liaison (4) jusqu'à une seconde extrémité (42).
PCT/CN2021/116188 2021-03-31 2021-09-02 Roue éolienne à flux axial, ventilateur à flux axial et climatiseur WO2022205767A1 (fr)

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CN202120666722.6 2021-03-31
CN202120666722.6U CN214499550U (zh) 2021-03-31 2021-03-31 轴流风轮、轴流风机和空调器

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116044790A (zh) * 2023-01-29 2023-05-02 山东凯格瑞森能源科技有限公司 一种高压散热风扇

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Publication number Priority date Publication date Assignee Title
JP2000314394A (ja) * 1999-04-30 2000-11-14 Denso Corp 送風機
CN204828047U (zh) * 2015-08-13 2015-12-02 温州奕龙汽车零部件有限公司 一种发动机冷却系统轴流风扇
CN109827242A (zh) * 2019-03-29 2019-05-31 广东美的制冷设备有限公司 空调室内机和具有其的空调器
CN112253538A (zh) * 2020-10-13 2021-01-22 广东顺威精密塑料股份有限公司 轴流风轮结构及轴流风机
CN212563792U (zh) * 2020-06-29 2021-02-19 黄明峰 一种风叶轮

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000314394A (ja) * 1999-04-30 2000-11-14 Denso Corp 送風機
CN204828047U (zh) * 2015-08-13 2015-12-02 温州奕龙汽车零部件有限公司 一种发动机冷却系统轴流风扇
CN109827242A (zh) * 2019-03-29 2019-05-31 广东美的制冷设备有限公司 空调室内机和具有其的空调器
CN212563792U (zh) * 2020-06-29 2021-02-19 黄明峰 一种风叶轮
CN112253538A (zh) * 2020-10-13 2021-01-22 广东顺威精密塑料股份有限公司 轴流风轮结构及轴流风机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116044790A (zh) * 2023-01-29 2023-05-02 山东凯格瑞森能源科技有限公司 一种高压散热风扇

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