WO2020155350A1 - 风机及具有其的空调室内机 - Google Patents

风机及具有其的空调室内机 Download PDF

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Publication number
WO2020155350A1
WO2020155350A1 PCT/CN2019/080045 CN2019080045W WO2020155350A1 WO 2020155350 A1 WO2020155350 A1 WO 2020155350A1 CN 2019080045 W CN2019080045 W CN 2019080045W WO 2020155350 A1 WO2020155350 A1 WO 2020155350A1
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WO
WIPO (PCT)
Prior art keywords
wind wheel
air
rotation axis
fan
line
Prior art date
Application number
PCT/CN2019/080045
Other languages
English (en)
French (fr)
Inventor
蔡序杰
周何杰
张滔
李书奇
李金波
张辉
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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
Priority claimed from CN201910093427.3A external-priority patent/CN109854523B/zh
Priority claimed from CN201920176844.XU external-priority patent/CN209557304U/zh
Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Priority to JP2019556248A priority Critical patent/JP2021516305A/ja
Priority to EP19778420.0A priority patent/EP3708842B1/en
Priority to KR1020197030594A priority patent/KR102321173B1/ko
Priority to US16/499,522 priority patent/US20210332828A1/en
Publication of WO2020155350A1 publication Critical patent/WO2020155350A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/007—Axial-flow pumps multistage fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029—Axial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/024—Multi-stage pumps with contrarotating parts
    • 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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • F04D29/388—Blades characterised by construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/301—Cross-sectional characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • This application relates to the field of refrigeration, and in particular to a fan and an air conditioner indoor unit having the same.
  • the air supply fans of the related art air conditioners are axial fans, cross-flow fans or centrifugal fans, and the number of fans is usually 1-3, and they work in parallel.
  • Axial fans and cross-flow fans have higher air supply efficiency, but the air supply distance is shorter; centrifugal fans have a longer air supply distance, but the air supply efficiency is low.
  • the parallel connection of multiple fans is helpful to increase the air circulation flow of the air supply, but it cannot improve the efficiency of the fans.
  • This application aims to solve at least one of the technical problems existing in the prior art.
  • this application proposes a fan, which increases the air supply distance and can improve the air supply efficiency.
  • the application also proposes an air conditioner indoor unit with the above-mentioned fan.
  • the fan according to the embodiment of the present application includes: a first wind wheel, the first wind wheel includes a first hub and a plurality of first blades spaced apart on the first hub, the first wind wheel has a first A rotation axis; a second wind wheel, the second wind wheel includes a second hub and a plurality of second blades spaced on the second hub, the second wind wheel has a second axis of rotation, in the air flow
  • the first wind wheel is located upstream of the second wind wheel, and one of the planes spaced apart from the fan is set as a reference plane, and the reference plane is parallel to the first rotation axis or
  • the second axis of rotation using the orthographic projection of the first axis of rotation or the second axis of rotation on the reference surface as the Y axis, and using the line on the reference surface and perpendicular to the Y axis as the X axis
  • the two first intersection points are respectively located upstream and downstream of the first projection, and each of the first intersection points is Is the intersection of the two first tangents, the two first tangents on the same side are respectively tangent to the first convex curve and the first concave curve, and the two first intersections
  • the connecting line is the first connecting line, and the straight line perpendicular to the first connecting line is the first vertical line; each of the second blades rotates to the orthographic projection on the reference surface when the distance to the reference surface is the closest Is the second projection, the second projection includes a second convex curve and a second concave curve connected end to end, two second intersection points are provided on the reference plane, and in the direction of air flow, two The second intersection points are respectively located upstream and downstream of the second projection, each of the second intersection points is the intersection of two second tangents, and the two second tangents on the same side are respectively connected to the second outer
  • the convex curve is tangent to the second concave curve
  • the wind pressure can be increased, the air supply distance can be increased, and the air supply efficiency can also be improved.
  • the first rotation axis and the second rotation axis are arranged in parallel.
  • the diameter of the first wind wheel is D1
  • the distance H to the diameter D1 satisfies: H ⁇ 0.2D1.
  • the included angle ⁇ between the first rotation axis and the second rotation axis ranges from 0° to 20°.
  • the diameter of the first wind wheel and the diameter of the second wind wheel are different.
  • the diameter of the first wind wheel is D1
  • the diameter of the second wind wheel is D2, D2 ⁇ 0.6D1.
  • the first wind wheel is a diagonal flow wind wheel or an axial flow wind wheel
  • the second wind wheel is a diagonal flow wind wheel or an axial flow wind wheel
  • the indoor unit of the air conditioner includes: a casing with an air inlet and an air outlet; an indoor heat exchanger, the indoor heat exchanger is arranged in the casing; a fan,
  • the fan is a fan according to the above-mentioned embodiment of the present application, and the fan is arranged in the casing and sends air toward the air outlet.
  • the air conditioner indoor unit of the embodiment of the present application by providing the fan of the above-mentioned embodiment, the wind pressure can be increased, the air supply distance can be increased, and the air supply efficiency can also be improved.
  • the first wind wheel and the second wind wheel operate at a differential speed, it can realize soft wind or no wind feeling.
  • the air-conditioning indoor unit is a vertical air-conditioning indoor unit, and the vertical air-conditioning indoor unit further includes an air duct mounting plate which is located in front of the indoor heat exchanger. Side, the fan is fixed on the air duct mounting plate.
  • the air conditioner indoor unit is an air conditioner on-hook, and the air outlet is provided on the front panel of the cabinet.
  • Fig. 1 is a front view of a fan according to an embodiment of the present application, in which the first rotation axis and the second rotation axis are arranged collinearly;
  • Fig. 2 is a front view of a fan according to an embodiment of the present application, wherein there is a distance between the first rotation axis and the second rotation axis;
  • Figure 3 is a front view of a fan according to an embodiment of the present application, in which there is an angle between the first rotation axis and the second rotation axis;
  • Figure 4 is a top view of a fan according to an embodiment of the present application.
  • Figure 5 is a diagram of the positional relationship between the fan and the reference plane according to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a fan, a reference plane, a first projection and a second projection according to an embodiment of the present application;
  • Fig. 7 is a schematic diagram of a first projection according to an embodiment of the present application.
  • FIG. 8 is a positional relationship diagram of the first projection, the second projection, the first vertical line, the second vertical line, and the Y axis of the fan according to an embodiment of the present application;
  • Figure 9 is a schematic diagram of an air conditioner on-hook according to an embodiment of the present application.
  • Figure 10 is a perspective view of a vertical air conditioner indoor unit according to an embodiment of the present application.
  • Fig. 11 is an exploded schematic diagram of a vertical air conditioner indoor unit according to an embodiment of the present application.
  • Air conditioner indoor unit 1000 Air conditioner indoor unit 1000,
  • Fan 100 cabinet 200, air inlet 4, air outlet 5, back panel part 6, panel part 7, indoor heat exchanger 300, air duct mounting plate 400, air outlet frame part 500,
  • First wind wheel 1 First hub 10, first blade 11, first projection 12, first convex curve 120, first concave curve 121, first tangent line 14, first connecting line 15, first vertical Line 16, the first axis of rotation 17,
  • Second wind wheel 2 second hub 20, second blade 21, second projection 22, second convex curve 220, second concave curve 221, second tangent line 24, second connecting line 25, second vertical line 26.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the fan 100 may be an air supply fan of an indoor unit of an air conditioner, which may be a ceiling machine, a window machine, a hanging machine, or a cabinet machine.
  • the fan 100 includes: a first wind wheel 1 and a second wind wheel 2.
  • the first wind wheel 1 includes a first hub 10 and a plurality of first blades 11 spaced apart on the first hub 10.
  • the first wind wheel 1 has a first rotation axis 17.
  • the second wind wheel 2 includes a second hub 20 and a plurality of second blades 21 spaced apart on the second hub 20.
  • the first wind wheel 1 is located upstream of the second wind wheel 2, and the second The wind wheel 2 has a second axis of rotation 27, that is, when the fan 100 is running, air flows through the first wind wheel 1 and then through the second wind wheel 2, and the first axis of rotation 17 is the first wind wheel 1.
  • the second rotation axis 27 is the rotation center axis of the second wind wheel 2.
  • the first wind wheel 1 is a diagonal flow wind wheel or an axial flow wind wheel
  • the second wind wheel 2 is a diagonal flow wind wheel or an axial flow wind wheel.
  • the reference plane 3 is parallel to the first rotation axis 17 or the second rotation axis 27, and the first rotation axis 17 or the second rotation axis 27 is on the reference plane 3
  • the orthographic projection of is the Y axis, and the X axis is a straight line located on the reference plane 3 and perpendicular to the Y axis.
  • the reference plane 3 is spaced apart from the fan 100, and the reference plane 3 is parallel to at least one of the first rotation axis 17 and the second rotation axis 27. The direction indicated by the arrow A in FIGS.
  • the Y axis is the orthographic projection of the first rotation axis 17 or the second rotation axis 27 on the reference plane 3, and the X axis is perpendicular to the Y axis.
  • the orthographic projection of the first rotation axis 17 or the second rotation axis 27 parallel to the reference plane 3 on the reference plane 3 is taken as the Y axis.
  • the reference plane 3 is parallel to the first rotation axis 17, and
  • the orthographic projection of a rotation axis 17 on the reference plane 3 is the Y axis.
  • the first rotation axis 17 and the second rotation axis 27 are collinear, and the straight line shown by the arrow L1 is the first rotation axis 17 or the second rotation axis 27.
  • the orthographic projection of each first blade 11 on the reference surface 3 when it rotates to the closest distance to the reference surface 3 is a first projection 12, and the first projection 12 includes a first convex curve 120 and a first concave curve 121 connected end to end.
  • the two first tangent lines 14 on the same side are respectively tangent to the first convex curve 120 and the first concave curve 121.
  • the line connecting the two first intersection points is the first line 15, which is perpendicular to the first line 15
  • the straight line connecting the line 15 is the first vertical line 16.
  • each first blade 11 has a first projection 12, and in the direction of air flow, the first projection 12 has a front edge (air flow in) and a trailing edge (air flow out), as shown in FIGS. 7 and 8.
  • the first projection 12 is provided with a first intersection point C (located upstream) located adjacent to the front edge and a first intersection point D (located downstream) located adjacent to the trailing edge.
  • One of the two first tangents 14 on the same side is tangent to the first convex curve 120 and the other is tangent to the first concave curve 121.
  • the line connecting the first intersection C and the second intersection D is The first line 15, the first vertical line 16 is perpendicular to the first line 15.
  • one of the first tangent lines 14 that intersects the first intersection point C may be a tangent to any point on the side of the first convex curve 120 close to the front edge, and the other one that intersects the first intersection point C
  • the first tangent line 14 may be a tangent line of any point on the side of the first concave curve 121 close to the front edge.
  • One of the first tangent lines 14 that intersects the first intersection point D can be a tangent to any point on the side close to the rear edge of the first convex curve 120, and the other tangent line 14 that intersects the first intersection point D can be It is a tangent to any point on the side close to the trailing edge of the first concave curve 121.
  • one of the points of the first blade 11 can be taken as the first reference point.
  • the first blade 11 rotates to make the distance between the first reference point and the reference plane 3 the closest, it is determined that the first blade 11 rotates to The distance between the reference plane 3 is the shortest, and it can be understood that when determining the distance between the first reference point and the reference plane 3, the radial distance between the same first reference point and the reference plane 3 when the same first reference point is at different positions is compared.
  • the radial distance between the first reference point and the first rotation axis 17 is set to be greater than the radial distance between the remaining positions of the first blade 11 and the first rotation axis 17, it is determined whether the first reference point rotates to the distance from the reference plane 3
  • the nearest is used to determine whether the first blade 11 rotates to the nearest distance from the reference plane 3.
  • the orthographic projection of each second blade 21 on the reference surface 3 when it rotates to the closest distance to the reference surface 3 is a second projection 22.
  • the second projection 22 includes a second convex curve 220 and a second concave curve 221 connected end to end.
  • the reference plane 3 is provided with two second intersection points. In the air flow direction, the two second intersection points are respectively located upstream and downstream of the second projection 22, and each second intersection point is the point of two second tangents 24 The intersection point, the two second tangent lines 24 on the same side are respectively tangent to the second convex curve 220 and the second concave curve 221.
  • the line connecting the two second intersection points is the second line 25, which is perpendicular to the second connecting line.
  • the straight line of the line 25 is the second vertical line 26.
  • each second blade 21 has a second projection 22.
  • the second projection 22 has a front edge (air flow in) and a rear edge (air flow out), as shown in FIG.
  • the projection 22 is provided with a second intersection E (located upstream) located adjacent to the front edge and a second intersection F (located downstream) located adjacent to the trailing edge.
  • One of the two second tangent lines 24 on the same side is tangent to the second convex curve 220 and the other is tangent to the second concave curve 221.
  • the line connecting the second intersection E and the second intersection F is the first Two connecting lines 25, the second vertical line 26 is perpendicular to the second connecting line 25.
  • one of the second tangent lines 24 that intersects the second intersection point E may be a tangent line to any point on the second convex curve 220 on the side close to the front edge, and that intersects the other tangent line of the second intersection point E.
  • the second tangent line 24 may be a tangent line to any point on the side of the second concave curve 221 close to the front edge.
  • One of the second tangent lines 24 that intersect the second intersection F can be a tangent to any point on the side of the second convex curve 220 near the trailing edge, and the other second tangent 24 that intersects the second intersection F can be the second The concave curve 221 is a tangent to any point on the side close to the trailing edge.
  • one of the points of the second blade 21 can be taken as the second reference point, and when the second blade 21 rotates so that the distance between the second reference point and the reference plane 3 is the closest, it is determined that the second blade 21 rotates to and The distance of the reference plane 3 is the closest. It can be understood that when determining the distance between the second reference point and the reference plane 3, the radial distance between the same second reference point and the reference plane 3 when the same second reference point is located at different positions is compared.
  • the radial distance between the second reference point and the second rotation axis 27 is set to be greater than the radial distance between the remaining positions of the second blade 21 and the second rotation axis 27 to determine whether the second reference point is rotated to the distance from the reference plane 3
  • the nearest is used to determine whether the second blade 21 rotates to the nearest distance from the reference plane 3.
  • the positive included angle between one of the first vertical line 16 and the second vertical line 26 and the X axis is an acute angle
  • the other one of the first vertical line 16 and the second vertical line 26 has an obtuse angle with the positive X axis
  • the positive angle refers to the angle between the vertical line and the direction indicated by the arrow of the X axis.
  • the positive included angle between the first vertical line 16 and the X axis is ⁇
  • the positive included angle between the second vertical line 26 and the X axis is ⁇
  • the positive included angle ⁇ and the positive One of the angles ⁇ is an acute angle and the other is an obtuse angle.
  • the positive included angle ⁇ is an obtuse angle
  • the positive included angle ⁇ is an acute angle. That is, the first vertical line 16 and the second vertical line 26 are located in different quadrants, for example, the first vertical line 16 is located in the second, third, and fourth quadrants, and the second vertical line 26 is located in the first and third quadrants. , In the fourth quadrant.
  • the inclination directions of the first vertical line 14 and the second vertical line 26 with respect to the Y axis are opposite.
  • the direction of rotation of the first blade 11 is opposite to the direction of rotation of the second blade 21.
  • the direction of rotation of the blade refers to the inclination direction of the blade with respect to the Y axis. It can be understood that the rotation directions of the plurality of first blades 11 are the same, and the rotation directions of the plurality of second blades 21 are the same.
  • the first vertical line 16 of the first blade 11 and the second vertical line 26 of the second blade 21 is an acute angle with the positive direction of the X axis
  • the first vertical line The positive included angle between the 16 and the second vertical line 26 and the X axis is an obtuse angle, so the circumferential tangential velocity of the airflow at the blade outlet of the first blade 11 is opposite to the circumferential tangential velocity of the airflow at the blade outlet of the second blade 21
  • offset can get a nearly pure "axial" straight airflow, that is, most or all of the airflow is blown out along the axial direction, further increasing the air supply distance.
  • the fan 100 adopts the first wind wheel 1 and the second wind wheel 2 to be arranged forward and backward along the air flow, the wind pressure can be increased under the premise of constant flow, and the air supply distance can be increased.
  • the wind pressure can be increased, the air supply distance can be increased, and the air supply efficiency can also be improved.
  • the first wind wheel 1 is driven to rotate by one motor, and the second wind wheel 2 is driven to rotate by another motor, so that the speed and steering of the first wind wheel 1 can be independently controlled.
  • the rotation speed and steering of the second wind wheel 2 are independently controlled.
  • one of the first wind wheel 1 and the second wind wheel 2 is provided with a motor, and the other is not provided with a motor.
  • the motor drives one of the wind wheels to rotate, the air flow drives the other wind wheel. Rotate.
  • the driving mode of the first wind wheel 1 and the second wind wheel 2 is not limited to this, and the operating state of the first wind wheel 1 and the second wind wheel 2 can be set according to actual needs, for example, the first wind wheel can be controlled 1 and the second wind wheel 2 rotate at the same speed or at different speeds, and the rotation direction of the first wind wheel 1 and the second wind wheel 2 can be controlled to be the same or opposite.
  • the first rotation axis 17 and the second rotation axis 27 are arranged in parallel. Thereby, the wind blown from the first blade 11 and the wind blown from the second blade 21 are made parallel, and the blowing distance is increased. Further, as shown in FIG. 2, there is a distance H between the first rotation axis 17 and the second rotation axis 27. Therefore, when installing the fan 100, it is not necessary to align the first rotation axis 17 and the second rotation axis 27, which facilitates the installation of the first wind wheel 1 and the second wind wheel 2, and at the same time facilitates the adjustment of the angle of the air flow after the second wind wheel 2.
  • the diameter of the first wind wheel 1 is D1, and the distance between H and the diameter D1 satisfies: H ⁇ 0.2D1.
  • the angle ⁇ between the first rotation axis 17 and the second rotation axis 27 ranges from 0° to 20°, for example, it may be 5°, 10° or 15°. Therefore, it is avoided that the airflow circumferential tangential velocity offset effect of the blade outlets of the two wind wheels is affected by the excessively large included angle between the two rotation axes, and the air supply distance and air supply efficiency are ensured.
  • the diameter of the first wind wheel 1 and the diameter of the second wind wheel 2 are different. Therefore, the first wind wheel 1 and/or the second wind wheel 2 can be turned on according to actual needs to adjust the air output of the fan 100, and increase the adjustment range of the air volume of the fan 100. In some other embodiments of the present application, the diameter of the first wind wheel 1 may be equal to the diameter of the second wind wheel 2, thereby reducing the types of parts and reducing costs.
  • the diameter of the first wind wheel 1 is D1
  • the diameter of the second wind wheel 2 is D2.
  • the motor power of the wheel 1 rotates. From the perspective of increasing the static pressure of the gas, the gas pressure on the surface of the second blade 21 will be greater than the gas pressure on the surface of the first blade 11. If the diameter of the wind wheel is small (small area), the wind wheel It is easier to vibrate due to changes in gas pressure, which will worsen noise.
  • the diameters of the first wind wheel 1 and the second wind wheel 2 satisfy the following relationship, D2 ⁇ 0.6D1, thus It is possible to prevent the second wind wheel 2 from vibrating due to changes in gas pressure, avoid noise due to vibration, and improve user comfort.
  • the air conditioner indoor unit 1000 includes: a cabinet 200, an indoor heat exchanger 300, and a fan 100.
  • the cabinet 200 is provided with an air inlet 4 and an air outlet 5.
  • the indoor heat exchanger 300 is provided in the cabinet 200.
  • the fan 100 is the fan 100 according to the above-mentioned embodiment of the present application.
  • the fan 100 is disposed in the casing 200 and sends air toward the air outlet 5.
  • the air-conditioning indoor unit 1000 may be a ceiling unit, a window unit, a hanging unit, or a cabinet unit.
  • the first wind wheel 1 and the second wind wheel 2 act as guide vanes in the direction of air flow, lowering (first When the wind wheel 1 and the second wind wheel 2 are at different speeds) or eliminate (the first wind wheel 1 and the second wind wheel 2 are at the same speed), the tangential rotation speed of the airflow (that is, the The pressure is converted into static pressure), which improves the work efficiency of the counter-rotating fan on the air, and the air flow passing through the two wind wheels flows in the direction of the air outlet 5, thereby achieving the effect of long-distance air supply.
  • first wind wheel 1 and the second wind wheel 2 in the counter-rotating fan rotate at different speeds in opposite directions or at the same speed. Reverse rotation, counter-rotating fans can achieve longer distance air supply.
  • the cold air delivery range can be expanded. Because when one wind wheel rotates at a higher speed and the other wind wheel rotates at a lower speed, the higher speed wind wheel plays a leading role.
  • the blade air outlet angle design deviates The direction of the rotation axis makes the axial flow wind wheel or the diagonal flow wind wheel itself have the effect of dispersing wind. Therefore, the angle range of the cold air flowing from the air outlet 5 is relatively large, thereby realizing wide-angle air supply.
  • the speed of the first wind wheel 1 and the second wind wheel 2 can be adjusted according to needs to make them rotate at a differential speed, so as to achieve a soft wind or no wind.
  • the wind-sensing air supply prevents the cold air from blowing directly to the user after flowing out of the air outlet 5, thereby causing a bad experience to the user. Therefore, the air conditioner indoor unit 1000 of the embodiment of the present application does not need to use the air guide plate with the micro-holes to realize the soft wind or no wind feeling, and the air volume loss is small.
  • the motor of one of the wind wheels may not work, and the other wind wheel still sends air in a positive direction toward the air outlet 5 side.
  • forward air supply means that air flow is blown out from the air outlet 5 under the action of a wind wheel
  • reverse air supply means that air flow is blown into the inside of the casing 200.
  • the air conditioner indoor unit 1000 of the embodiment of the present application by providing the fan 100 of the above embodiment, the wind pressure can be increased, the air supply distance can be increased, and the air supply efficiency can also be improved.
  • the air supply with soft wind or no wind can be realized.
  • one of the air outlets 5 is provided with a fan 100 according to the above-mentioned embodiment of the present application on the back side, and the other air outlet 5 is provided with an axial fan, Cross flow fan or centrifugal fan.
  • the air conditioner indoor unit 1000 is an air conditioner on-hook, and the air outlet 5 is provided on the front panel of the cabinet 200.
  • the top wall of the casing 200 is provided with an air inlet 4.
  • the air-conditioning indoor unit 1000 is a vertical air-conditioning indoor unit 1000, and the vertical air-conditioning indoor unit 1000 further includes an air duct mounting plate 400, which is located at On the front side of the indoor heat exchanger 300, the fan 100 is fixed on the air duct mounting plate 400, thereby facilitating the fixing of the fan 100.
  • the casing 200 includes a back plate part 6 and a panel part 7, the front side of the back plate part 6 is open, the panel part 7 is provided on the front side of the back plate part 6, the back plate part 6 is provided with an air inlet 4, and the panel The component 7 is provided with an air outlet 5.
  • the vertical air conditioner indoor unit 1000 further includes an air outlet frame member 500, the air outlet frame member 500 is provided between the air duct mounting plate 400 and the cabinet 200, and the air outlet frame member 500 can be adjusted
  • the air outlet direction for example, the air outlet frame member 500 is provided with louvers for adjusting the air outlet direction.

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Abstract

一种风机(100)及具有其的空调室内机(1000)。风机(100)包括：第一风轮(1)和第二风轮(2)，第一风轮(1)包括多个第一叶片(11)；第二风轮(2)包括多个第二叶片(21)；每个第一叶片(11)在基准面上的正投影为第一投影，第一投影设有两个第一交点，两个第一交点的连线为第一连线，垂直于第一连线的直线为第一垂直线；每个第二叶片(21)在基准面上的正投影为第二投影，第二投影设有两个第二交点，两个第二交点的连线为第二连线，垂直于第二连线的直线为第二垂直线，第一垂直线和第二垂直线的其中一个与X轴的正向夹角为锐角，第一垂直线和第二垂直线的另一个与X轴的正向夹角为钝角。

Description

风机及具有其的空调室内机
相关申请的交叉引用
本申请基于申请号为：201910093427.3、201920176844.X，申请日为2019年01月30日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及制冷领域，尤其是涉及一种风机及具有其的空调室内机。
背景技术
相关技术的空调器的送风风机为轴流风机、贯流风机或者离心风机，风机的数量通常为1个-3个，且采用并联的方式进行工作。
轴流风机和贯流风机送风效率较高，但送风距离较短；离心风机送风距离较远，但送风效率低。多个风机并联对提升送风的气体循环流量有帮助，但无法改善风机效率。
申请内容
本申请旨在至少解决现有技术中存在的技术问题之一。
为此，本申请提出一种风机，提升送风距离，可以提高送风效率。
本申请还提出一种具有上述风机的空调室内机。
根据本申请实施例的风机，包括：第一风轮，所述第一风轮包括第一轮毂和间隔设在所述第一轮毂上的多个第一叶片，所述第一风轮具有第一旋转轴线；第二风轮，所述第二风轮包括第二轮毂和间隔设在所述第二轮毂上的多个第二叶片，所述第二风轮具有第二旋转轴线，在气流的流动方向上，所述第一风轮位于所述第二风轮的上游，设定与所述风机间隔设置的其中一个平面为基准面，所述基准面平行于所述第一旋转轴线或第二旋转轴线，以所述第一旋转轴线或所述第二旋转轴线在所述基准面上的正投影为Y轴，以位于所述基准面且垂直于所述Y轴的直线为X轴；每个所述第一叶片转动至与所述基准面距离最近时在所述基准面上的正投影为第一投影，所述第一投影包括首尾相连的第一外凸曲线和第一内凹曲线，所述基准面上设有两个第一交点，在空气的流动方向上，两个所述第一交点分别位于所述第一投影的上游和下游，每个所 述第一交点均为两条第一切线的交点，位于同一侧的两条所述第一切线分别与所述第一外凸曲线和所述第一内凹曲线相切，两个所述第一交点的连线为第一连线，垂直于所述第一连线的直线为第一垂直线；每个所述第二叶片转动至与所述基准面距离最近时在所述基准面上的正投影为第二投影，所述第二投影包括首尾相连的第二外凸曲线和第二内凹曲线，所述基准面上设有两个第二交点，在空气的流动方向上，两个所述第二交点分别位于所述第二投影的上游和下游，每个所述第二交点均为两条第二切线的交点，位于同一侧的两条所述第二切线分别与所述第二外凸曲线和所述第二内凹曲线相切，两个所述第二交点的连线为第二连线，垂直于所述第二连线的直线为第二垂直线，所述第一垂直线和所述第二垂直线的其中一个与所述X轴的正向夹角为锐角，所述第一垂直线和所述第二垂直线的另一个与所述X轴的正向夹角为钝角。
根据本申请实施例的风机，可以提升风压，提升送风距离，同时还可以提高送风效率。
在本申请的一些实施例中，所述第一旋转轴线和所述第二旋转轴线平行设置。
在本申请的一些实施例中，所述第一旋转轴线和所述第二旋转轴线之间具有间距H；或者所述第一旋转轴线和所述第二旋转轴线共线设置。
具体地，所述第一风轮的直径为D1，所述间距H与直径D1之间满足：H≤0.2D1。
在本申请的一些实施例中，所述第一旋转轴线和所述第二旋转轴线之间具有夹角β。
具体地，所述第一旋转轴线和所述第二旋转轴线之间的夹角β的取值范围为0～20°。
在本申请的一些实施例中，所述第一风轮的直径和所述第二风轮的直径不相同。
具体地，所述第一风轮的直径为D1，所述第二风轮的直径为D2，D2≥0.6D1。
在本申请的一些实施例中，所述第一风轮为斜流风轮或轴流风轮，所述第二风轮为斜流风轮或轴流风轮。
根据本申请实施例的空调室内机，包括：机壳，所述机壳上设有进风口和出风口；室内换热器，所述室内换热器设在所述机壳内；风机，所述风机为根据本申请上述实施例的风机，所述风机设在所述机壳内且朝向所述出风口送风。
根据本申请实施例的空调室内机，通过设有上述实施例的风机，可以提升风压，提升送风距离，同时还可以提高送风效率。当第一风轮和第二风轮差速运行时可以实现柔风感或无风感送风。
在本申请的一些实施例中，所述空调室内机为立式空调室内机，所述立式空调室内 机还包括风道安装板，所述风道安装板位于所述室内换热器的前侧，所述风机固定在所述风道安装板上。
在本申请的一些实施例中，所述空调室内机为空调挂机，所述出风口设在所述机壳的前面板上。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为根据本申请实施例的风机的主视图，其中第一旋转轴线和第二旋转轴线共线设置；
图2为根据本申请实施例的风机的主视图，其中第一旋转轴线和第二旋转轴线之间具有间距；
图3为根据本申请实施例的风机的主视图，其中第一旋转轴线和第二旋转轴线之间具有夹角；
图4为根据本申请实施例的风机的俯视图；
图5为根据本申请实施例的风机与基准面的位置关系图；
图6为根据本申请实施例的风机、基准面、第一投影和第二投影的示意图；
图7为根据本申请实施例的第一投影的示意图；
图8为根据本申请实施例的风机的第一投影、第二投影、第一垂直线、第二垂直线和Y轴的位置关系图；
图9为根据本申请实施例的空调挂机的示意图；
图10为根据本申请实施例的立式空调室内机的立体图；
图11为根据本申请实施例的立式空调室内机的分解示意图。
附图标记：
空调室内机1000、
风机100、机壳200、进风口4、出风口5、背板部件6、面板部件7、室内换热器300、风道安装板400、出风框部件500、
第一风轮1、第一轮毂10、第一叶片11、第一投影12、第一外凸曲线120、第一 内凹曲线121、第一切线14、第一连线15、第一垂直线16、第一旋转轴线17、
第二风轮2、第二轮毂20、第二叶片21、第二投影22、第二外凸曲线220、第二内凹曲线221、第二切线24、第二连线25、第二垂直线26、第二旋转轴线27、
基准面3。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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元件必须具有特定的方位、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。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面参考图1-图8描述根据本申请实施例的风机100，风机100可以为空调室内机的送风风机，空调室内机可以为天花机、窗机、挂机或者柜机等。
如图1-图8所示，根据本申请实施例的风机100，包括：第一风轮1和第二风轮2。第一风轮1包括第一轮毂10和间隔设在第一轮毂10上的多个第一叶片11，第一风轮1具有第一旋转轴线17。第二风轮2包括第二轮毂20和间隔设在第二轮毂20上的多个第二叶片21，在气流的流动方向上，第一风轮1位于第二风轮2的上游，第二风轮2具有第二旋转轴线27，也就是说，当风机100运行时，空气先流经第一风轮1后再流经第二风轮2，第一旋转轴线17为第一风轮1的旋转中心轴线，第二旋转轴线27为第二风轮2的旋转中心轴线。可选地，第一风轮1为斜流风轮或轴流风轮，第二风 轮2为斜流风轮或轴流风轮。
设定与风机100间隔设置的其中一个平面为基准面3，基准面3平行于第一旋转轴线17或第二旋转轴线27，以第一旋转轴线17或第二旋转轴线27在基准面3上的正投影为Y轴，以位于基准面3且垂直于Y轴的直线为X轴。具体而言，基准面3与风机100间隔设置，基准面3至少平行于第一旋转轴线17和第二旋转轴线27中的其中一个，图5和图6中的箭头A所指方向为风机100的正投影方向，Y轴为第一旋转轴线17或第二旋转轴线27在基准面3上的正投影，X轴与Y轴垂直。在本申请的一些示例中，以平行于基准面3的第一旋转轴线17或第二旋转轴线27在基准面3的正投影为Y轴，例如基准面3与第一旋转轴线17平行，第一旋转轴线17在基准面3上的正投影为Y轴。在图1-图6所示的具体示例中，第一旋转轴线17和第二旋转轴线27共线，箭头L1所示的直线为第一旋转轴线17或者第二旋转轴线27。
每个第一叶片11转动至与基准面3距离最近时在基准面3上的正投影为第一投影12，第一投影12包括首尾相连的第一外凸曲线120和第一内凹曲线121，基准面3上设有两个第一交点，在空气的流动方向上，两个第一交点分别位于第一投影12的上游和下游，每个第一交点均为两条第一切线14的交点，位于同一侧两条第一切线14分别与第一外凸曲线120和第一内凹曲线121相切，两个第一交点的连线为第一连线15，垂直于第一连线15的直线为第一垂直线16。具体而言，每个第一叶片11具有第一投影12，在空气的流动方向上，第一投影12具有前缘(气流流入)及后缘(气流流出)，如图7和图8所示，第一投影12设有邻近前缘设置的第一交点C(位于上游)和邻近后缘设置的第一交点D(位于下游)。位于同一侧的两个第一切线14中的其中一条与第一外凸曲线120相切且另一条与第一内凹曲线121相切，第一交点C和第二交点D的连线为第一连线15，第一垂直线16垂直于第一连线15。需要进行说明的是，相交出第一交点C的其中一条第一切线14可以是第一外凸曲线120的靠近前缘那一侧的任意点的切线，相交出第一交点C的另一条第一切线14可以是第一内凹曲线121的靠近前缘那一侧的任意点的切线。
相交出第一交点D的其中一条第一切线14可以是靠近第一外凸曲线120的后缘那一侧的任意点的切线，相交出第一交点D的另一条第一切线14可以是靠近第一内凹曲线121的后缘那一侧的任意点的切线。
需要进行说明的是，可以取第一叶片11的其中一个点为第一参考点，当第一叶片11转动至使得第一参考点与基准面3的距离最近时判定第一叶片11转动至与基准面3的距离最近，可以理解的是，在判定第一参考点与基准面3的距离时是将同一个第一 参考点位于不同位置时与基准面3之间的径向距离进行比较。例如设定第一参考点与第一旋转轴线17的径向距离大于第一叶片11的其余位置与第一旋转轴线17的径向距离，判定第一参考点是否转动至与基准面3的距离最近以判定第一叶片11是否转动至与基准面3的距离最近。
每个第二叶片21转动至与基准面3距离最近时在基准面3上的正投影为第二投影22，第二投影22包括首尾相连的第二外凸曲线220和第二内凹曲线221，基准面3上设有两个第二交点，在空气的流动方向上，两个第二交点分别位于第二投影22的上游和下游，每个第二交点均为两条第二切线24的交点，位于同一侧的两条第二切线24分别与第二外凸曲线220和第二内凹曲线221相切，两个第二交点的连线为第二连线25，垂直于第二连线25的直线为第二垂直线26。具体而言，每个第二叶片21具有第二投影22，在空气的流动方向上，第二投影22具有前缘(气流流入)及后缘(气流流出)，如图8所示，第二投影22设有邻近前缘设置的第二交点E(位于上游)和邻近后缘设置的第二交点F(位于下游)。位于同一侧的两条第二切线24中的其中一条与第二外凸曲线220相切且另一条与第二内凹曲线221相切，第二交点E和第二交点F的连线为第二连线25，第二垂直线26垂直于第二连线25。需要进行说明的是，相交出第二交点E的其中一条第二切线24可以是第二外凸曲线220上靠近前缘那一侧的任意点的切线，相交出第二交点E的另一条第二切线24可以是第二内凹曲线221上靠近前缘那一侧的任意点的切线。
相交出第二交点F的其中一条第二切线24可以是第二外凸曲线220靠近后缘那一侧的任意点的切线，相交出第二交点F的另一条第二切线24可以是第二内凹曲线221靠近后缘那一侧的任意点的切线。
需要进行说明的是，可以取第二叶片21的其中一个点为第二参考点，当第二叶片21转动至使得第二参考点与基准面3的距离最近时判定第二叶片21转动至与基准面3的距离最近，可以理解的是，在判定第二参考点与基准面3的距离时是将同一个第二参考点位于不同位置时与基准面3之间的径向距离进行比较。例如设定第二参考点与第二旋转轴线27的径向距离大于第二叶片21的其余位置与第二旋转轴线27的径向距离，判定第二参考点是否转动至与基准面3的距离最近以判定第二叶片21是否转动至与基准面3的距离最近。
第一垂直线16和第二垂直线26的其中一个与X轴的正向夹角为锐角，第一垂直线16和第二垂直线26的另一个与X轴的正向夹角为钝角，需要进行说明的是，正向夹角指的是垂直线与X轴的箭头所指方向的夹角。具体而言，如图8所示，第一垂直线16 与X轴的正向夹角为β，第二垂直线26与X轴的正向夹角为α，其中正向夹角β和正向夹角α中的其中一个为锐角且另一个为钝角。在图8所示的具体示例中，正向夹角β为钝角，正向夹角α为锐角。也就是说，第一垂直线16和第二垂直线26位于不同的象限内，例如第一垂直线16位于第二、第三、第四象限内，第二垂直线26位于第一、第三、第四象限内。换言之，在空气的流动方向上，第一垂直线14和第二垂直线26相对于Y轴的倾斜方向相反。简言之，第一叶片11的旋向与第二叶片21的旋向相反，需要进行说明的是，在申请的描述中，叶片的旋向指的是叶片相对于Y轴的倾斜方向。可以理解的是，多个第一叶片11的旋向相同，多个第二叶片21的旋向相同。
具体而言，当风机100转动时，由于第一叶片11的第一垂直线16和第二叶片21的第二垂直线26的其中一个与X轴的正向夹角为锐角，第一垂直线16和第二垂直线26的另一个与X轴的正向夹角为钝角，因此第一叶片11的叶片出口的气流圆周切向速度与第二叶片21的叶片出口的气流圆周切向速度相反并抵消，可以得到近似纯“轴向”的平直气流，即大部分甚至全部气流沿轴向吹出，进一步提高了送风距离。
由于第一叶片11的叶片出口气流的圆周切向分速度与第二叶片21的叶片出口气流的圆周切向分速度相反，相当于增加了第二风轮2的叶片进口气流和第二叶片21的相对速度，进一步提高了送风效率。
同时由于风机100采用第一风轮1和第二风轮2沿气流流向前后布置，在流量不变的前提下可以提升风压，进而提升送风距离。
根据本申请实施例的风机100，可以提升风压，提升送风距离，同时还可以提高送风效率。
在本申请的一些实施例中，第一风轮1由一个电机驱动转动，第二风轮2由另一个电机驱动转动，由此可对第一风轮1的转速和转向进行独立控制，可以对第二风轮2的转速和转向进行独立控制。
在本申请的另一些实施例中，第一风轮1和第二风轮2中的其中一个设有电机，另一个不设电机，电机驱动其中一个风轮转动时，气流带动另一个风轮转动。可以理解的是，第一风轮1和第二风轮2的驱动方式不限于此，可以根据实际需求设置第一风轮1和第二风轮2的运行状态，例如可以控制第一风轮1和第二风轮2按照相同的转速转动，或者是按照不同的转速转动，还可以控制第一风轮1的转动方向和第二风轮2的转动方向相同或者相反。
在本申请的一些实施例中，第一旋转轴线17和第二旋转轴线27平行设置。从而使得从第一叶片11吹送的风和第二叶片21吹送的风平行，增加送风距离。进一步地， 如图2所示，第一旋转轴线17和第二旋转轴线27之间具有间距H。从而安装风机100时无需对准第一旋转轴线17和第二旋转轴线27，便于安装第一风轮1和第二风轮2，同时便于调整经过第二风轮2后的气流的角度。更进一步地，第一风轮1的直径为D1，间距H与直径D1之间满足：H≤0.2D1。从而避免因第一旋转轴线17和第二旋转轴线27之间的间距过大而影响两个风轮的叶片出口的气流圆周切向速度抵消效果，保证了送风距离和送风效率。当然可以理解的是，第一旋转轴线17和第二旋转轴线27还可以共线设置(如图1所示)，保证送风距离。
在本申请的一些实施例中，如图3所示，第一旋转轴线17和第二旋转轴线27之间具有夹角β。从而可以调整经过第二风轮2后的气流的角度。具体地，第一旋转轴线17和第二旋转轴线27之间的夹角β的取值范围为0～20°，例如可以为5°、10°或者15°。从而避免因两个旋转轴线之间的夹角过大而影响两个风轮的叶片出口的气流圆周切向速度抵消效果，保证了送风距离和送风效率。
在本申请的一些实施例中，第一风轮1的直径和第二风轮2的直径不相同。从而可以根据实际需求开启第一风轮1和/或第二风轮2以调整风机100的出风量，增加风机100的风量的调整范围。在本申请的另一些实施例中，第一风轮1的直径可以等于第二风轮2的直径，从而可以减少零件种类，降低成本。
第一风轮1的直径为D1，第二风轮2的直径为D2，申请人经过大量的实验发现，如果D2≤0.6D1，驱动第二风轮2转动的电机功率会小于驱动第一风轮1转动的电机功率，从对气体做功增加静压的角度而言，第二叶片21表面的气体压力会大于第一叶片11表面的气体压力，风轮直径小(面积小)的话，风轮更容易因气体压力的变化而出现振动，会恶化噪音，因此在本申请的一些具体实施例中，使得第一风轮1和第二风轮2的直径满足如下关系，D2≥0.6D1，从而可以避免第二风轮2因气体压力变化而出现振动，避免因振动而出现噪音，提高用户的使用舒适性。
根据本申请实施例的空调室内机1000，包括：机壳200、室内换热器300和风机100，机壳200上设有进风口4和出风口5。室内换热器300设在机壳200内。风机100为根据本申请上述实施例的风机100，风机100设在机壳200内且朝向出风口5送风。具体地，空调室内机1000可以为天花机、窗机、挂机或者柜机。
由于第一风轮1的叶片的倾斜方向和第二风轮2的叶片的倾斜方向相反，第一风轮1和第二风轮2在空气流动的方向上互为导叶，降低(第一风轮1和第二风轮2在不同的转速的情况下)或消除(第一风轮1和第二风轮2在相同的转速的情况下)了气流切向的旋转速度(即由动压转化为静压)，提高了对旋风机对空气的做功效率，并且 经过两个风轮的气流均朝向出风口5的方向流动，从而实现远距离送风的效果。需要说明的是，较之于单一的贯流风机、轴流风机或斜流风机，对旋风机中第一风轮1和第二风轮2不管是以不同的速度反向旋转还是相同的速度反向旋转，对旋风机均能够实现更远距离的送风。
其次，第一风轮1和第二风轮2在不同的转速的情况下，可以扩大冷风的输送范围。因为当一个风轮以较高的转速转动且另外一个风轮以较低的转速转动时，较高转速的风轮起主导作用，基于单级轴流或斜流风机的叶片气流出口角度设计偏离旋转轴方向，使得轴流风轮或斜流风轮本身具有散风效果，因此，由出风口5流出的冷风的角度范围较大，从而实现广角送风。另外，同样基于轴流风轮或斜流风轮本身具有散风效果，可根据需要来调整第一风轮1和第二风轮2的转速，使其差速旋转，从而实现柔风感或无风感送风，避免了冷风由出风口5流出后直吹用户从而给用户造成不良的体验。因此，本申请实施例的空调室内机1000无需使用带微孔的导风板即可实现柔风感或无风感送风，风量损失少。需要说明的是，为了实现广角送风和无风感送风，可使得其中一个风轮的电机不工作，另一个风轮仍朝出风口5一侧正向送风。另外，为了实现广角送风和无风感送风，也可使得其中一个风轮向机壳200内侧反向送风，另一个风轮仍正向送风。其中，“正向送风”为在风轮的作用下气流从出风口5吹出，“反向送风”为气流往机壳200内侧吹入。
根据本申请实施例的空调室内机1000，通过设有上述实施例的风机100，可以提升风压，提升送风距离，同时还可以提高送风效率。当第一风轮1和第二风轮2差速运行时可以实现柔风感或无风感送风。
在本申请的一些实施例中，出风口5为多个，其中一个出风口5的后侧设有根据本申请上述实施例的风机100，另一个出风口5的后侧设有轴流风机、贯流风机或者离心风机。
在本申请的一些实施例中，如图9所示，空调室内机1000为空调挂机，出风口5设在机壳200的前面板上。在图9的示例中，机壳200的顶壁上设有进风口4。
在本申请的一些实施例中，如图10-图11所示，空调室内机1000为立式空调室内机1000，立式空调室内机1000还包括风道安装板400，风道安装板400位于室内换热器300的前侧，风机100固定在风道安装板400上，从而便于风机100的固定。具体地，机壳200包括背板部件6和面板部件7，背板部件6的前侧敞开，面板部件7设在背板部件6的前侧，背板部件6上设有进风口4，面板部件7上设有出风口5。
在图11所示的具体示例中，立式空调室内机1000还包括出风框部件500，出风框 部件500设在风道安装板400和机壳200之间，出风框部件500可以调整出风方向，例如出风框部件500上设有调整出风方向的百叶。
根据本申请实施例的空调室内机的其他构成例如室内换热器和电控装置等以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者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示例。而且，描述的具体特征、结构、材料或者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。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (12)

  1. 一种风机，其特征在于，包括：
    第一风轮，所述第一风轮包括第一轮毂和间隔设在所述第一轮毂上的多个第一叶片，所述第一风轮具有第一旋转轴线；
    第二风轮，所述第二风轮包括第二轮毂和间隔设在所述第二轮毂上的多个第二叶片，所述第二风轮具有第二旋转轴线，在气流的流动方向上，所述第一风轮位于所述第二风轮的上游，设定与所述风机间隔设置的其中一个平面为基准面，所述基准面平行于所述第一旋转轴线或第二旋转轴线，以所述第一旋转轴线或所述第二旋转轴线在所述基准面上的正投影为Y轴，以位于所述基准面且垂直于所述Y轴的直线为X轴；
    每个所述第一叶片转动至与所述基准面距离最近时在所述基准面上的正投影为第一投影，所述第一投影包括首尾相连的第一外凸曲线和第一内凹曲线，所述基准面上设有两个第一交点，在空气的流动方向上，两个所述第一交点分别位于所述第一投影的上游和下游，每个所述第一交点均为两条第一切线的交点，位于同一侧的两条所述第一切线分别与所述第一外凸曲线和所述第一内凹曲线相切，两个所述第一交点的连线为第一连线，垂直于所述第一连线的直线为第一垂直线；
    每个所述第二叶片转动至与所述基准面距离最近时在所述基准面上的正投影为第二投影，所述第二投影包括首尾相连的第二外凸曲线和第二内凹曲线，所述基准面上设有两个第二交点，在空气的流动方向上，两个所述第二交点分别位于所述第二投影的上游和下游，每个所述第二交点均为两条第二切线的交点，位于同一侧的两条所述第二切线分别与所述第二外凸曲线和所述第二内凹曲线相切，两个所述第二交点的连线为第二连线，垂直于所述第二连线的直线为第二垂直线，所述第一垂直线和所述第二垂直线的其中一个与所述X轴的正向夹角为锐角，所述第一垂直线和所述第二垂直线的另一个与所述X轴的正向夹角为钝角。
  2. 根据权利要求1所述的风机，其特征在于，所述第一旋转轴线和所述第二旋转轴线平行设置。
  3. 根据权利要求2所述的风机，其特征在于，所述第一旋转轴线和所述第二旋转轴线之间具有间距H；或者所述第一旋转轴线和所述第二旋转轴线共线设置。
  4. 根据权利要求3所述的风机，其特征在于，所述第一风轮的直径为D1，所述间距H与直径D1之间满足：H≤0.2D1。
  5. 根据权利要求1所述的风机，其特征在于，所述第一旋转轴线和所述第二旋转 轴线之间具有夹角β。
  6. 根据权利要求5所述的风机，其特征在于，所述第一旋转轴线和所述第二旋转轴线之间的夹角β的取值范围为0～20°。
  7. 根据权利要求1-6中任一项所述的风机，其特征在于，所述第一风轮的直径和所述第二风轮的直径不相同。
  8. 根据权利要求7所述的风机，其特征在于，所述第一风轮的直径为D1，所述第二风轮的直径为D2，D2≥0.6D1。
  9. 根据权利要求1-8中任一项所述的风机，其特征在于，所述第一风轮为斜流风轮或轴流风轮，所述第二风轮为斜流风轮或轴流风轮。
  10. 一种空调室内机，其特征在于，包括：
    机壳，所述机壳上设有进风口和出风口；
    室内换热器，所述室内换热器设在所述机壳内；
    风机，所述风机为根据权利要求1-9中任一项所述的风机，所述风机设在所述机壳内且朝向所述出风口送风。
  11. 根据权利要求10所述的空调室内机，其特征在于，所述空调室内机为立式空调室内机，所述立式空调室内机还包括风道安装板，所述风道安装板位于所述室内换热器的前侧，所述风机固定在所述风道安装板上。
  12. 根据权利要求10所述的空调室内机，其特征在于，所述空调室内机为空调挂机，所述出风口设在所述机壳的前面板上。
PCT/CN2019/080045 2019-01-30 2019-03-28 风机及具有其的空调室内机 WO2020155350A1 (zh)

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KR1020197030594A KR102321173B1 (ko) 2019-01-30 2019-03-28 팬 및 이를 구비하는 공기 조화기 실내기
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