WO2023024223A1 - 空调及其贯流风机 - Google Patents

空调及其贯流风机 Download PDF

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Publication number
WO2023024223A1
WO2023024223A1 PCT/CN2021/123603 CN2021123603W WO2023024223A1 WO 2023024223 A1 WO2023024223 A1 WO 2023024223A1 CN 2021123603 W CN2021123603 W CN 2021123603W WO 2023024223 A1 WO2023024223 A1 WO 2023024223A1
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WO
WIPO (PCT)
Prior art keywords
cross
air
flow
flow fan
air outlet
Prior art date
Application number
PCT/CN2021/123603
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English (en)
French (fr)
Inventor
曹代科
吴波
王锡栋
凌敬
Original Assignee
美的集团武汉制冷设备有限公司
广东美的制冷设备有限公司
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Publication date
Priority claimed from CN202122029133.XU external-priority patent/CN216080070U/zh
Priority claimed from CN202110988654.XA external-priority patent/CN115727419A/zh
Application filed by 美的集团武汉制冷设备有限公司, 广东美的制冷设备有限公司 filed Critical 美的集团武汉制冷设备有限公司
Publication of WO2023024223A1 publication Critical patent/WO2023024223A1/zh

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    • 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
    • F24F1/0025—Cross-flow or tangential 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
    • 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
    • F24F13/24—Means for preventing or suppressing noise

Definitions

  • the invention relates to the field of electrical equipment, in particular to an air conditioner and a cross-flow fan thereof.
  • the air conditioner usually uses a cross-flow fan for air supply.
  • the cross-flow fan includes a cross-flow fan wheel 2a and a volute 1a.
  • the cross-flow wind wheel 2a is arranged in the volute 1a.
  • the main purpose of the embodiment of the present application is to provide a cross-flow fan, aiming to solve the technical problems of the cross-flow fan that the air supply efficiency is reduced and the surge noise is generated due to the backflow of air to both ends of the cross-flow fan.
  • a cross-flow fan proposed in the embodiment of the present application includes a volute with an air supply duct inside and a cross-flow fan wheel arranged in the air supply duct;
  • the cross-flow wind wheel divides the air supply duct into an air inlet duct located upstream of the cross-flow wind rotor and an air outlet duct located downstream of the cross-flow wind rotor, and the air outlet duct is close to the A guide part is arranged on the side wall of the end part of the cross-flow wind wheel.
  • the volute includes a shroud, two side plates covering both sides of the shroud, and a volute arranged between the two side plates and connected to the two side plates on both sides. tongue;
  • the two side plates, the coaming plate and the volute tongue enclose the air supply duct, the axial direction of the cross-flow fan wheel is perpendicular to the side plates, and the guide part is arranged on the The side plate faces inwardly and is located at an end of the air outlet channel close to the cross-flow rotor.
  • the guide part is configured as a boss, and a constriction is provided on the air outlet duct, and the distance between the shroud and the volute tongue at the constriction is minimum;
  • the air guide part at least covers the area of the side plate in the air outlet duct from the constriction to the cross-flow fan wheel.
  • the air guide part covers all areas of the side panel in the air outlet duct.
  • the guide part is a platform, and the height of the guide part is 3-6 mm.
  • the volute includes an air outlet arranged at the end of the air outlet channel away from the cross-flow fan wheel;
  • the height of the guide portion gradually increases.
  • the height of the guide part is 3-6mm.
  • each of the side plates is provided with a plurality of the guide parts, and the guide parts are configured as guide vanes protruding from the side plates;
  • the cross-section of the guide part includes a windward front end and a leeward end, and the angle between the extension direction of the cross-section at the end of the end and the air flow direction at the end is an obtuse angle or a flat angle;
  • a plurality of guide parts are arranged at intervals in sequence from the volute tongue to the coaming plate.
  • the included angle ranges from 135° to 180°.
  • the height of the guide part ranges from 3 to 6 mm.
  • the projections of the plurality of guide parts on the first direction are sequentially connected end to end, and the air outlet direction of the cross-flow fan and the axial direction of the cross-flow fan wheel are both perpendicular to the first direction.
  • a constriction is provided on the air outlet duct, and the distance between the shroud and the volute tongue is the smallest at the constriction;
  • the guide part is distributed in the area between the side plate in the air outlet duct from the constriction to the cross-flow fan wheel.
  • the flow guide part is configured as a rib, and the flow guide part extends from the shroud to the volute tongue.
  • a constriction is provided on the air outlet duct, and the distance between the shroud and the volute tongue is the smallest at the constriction;
  • the flow guiding part is arranged at the constriction.
  • the air guide part is configured as a column protruding from the side plate, and there are a plurality of the air guide parts.
  • a constriction is provided on the air outlet duct, and the distance between the shroud and the volute tongue is the smallest at the constriction;
  • a plurality of the guide parts are distributed in the area of the side plate in the air outlet channel from the constriction to the cross-flow fan wheel.
  • a plurality of the air guides are arranged in multiple rows, and in each row of the air guides, the plurality of air guides are arranged along a direction perpendicular to the flow direction of the airflow;
  • the multiple rows of air guides are arranged sequentially along the direction of air flow, and the height of the air guides in the single row of air guides increases along the direction of the air flow, and the height of the air guides in the single row of air guides increase in number.
  • the embodiment of the present application also provides an air conditioner, which includes the above-mentioned cross-flow fan.
  • the air outlet duct is provided with a guide part at the end close to the cross-flow wind rotor, and the guide part can increase the air pressure near the end of the cross-flow air duct and/or guide the end of the air outlet duct close to the cross-flow rotor
  • the flow direction of the airflow thereby weakening or even eliminating the phenomenon that the airflow in the air outlet channel flows back through the gap between the end face of the cross-flow impeller and the volute, thereby improving the air supply efficiency of the cross-flow impeller and reducing the abnormal sound of surge.
  • Fig. 1 is the schematic diagram of the return air of cross-flow fan in the prior art
  • Fig. 2 is the local schematic diagram of the return air of the cross-flow fan in the prior art
  • FIG. 3 is a schematic cross-sectional view of the air conditioner according to Embodiment 1 of the present application.
  • Fig. 4 is a partial three-dimensional schematic diagram of the volute of Embodiment 1 of the present application.
  • Fig. 5 is a partial schematic diagram of the air conditioner in Embodiment 1 of the present application.
  • FIG. 6 is a schematic cross-sectional view of the air conditioner according to Embodiment 1 of the present application.
  • Fig. 7 is a schematic cross-sectional view of the distribution area of the air-conditioning display guide part in Embodiment 1 of the present application;
  • Fig. 8 is a schematic cross-sectional view showing the distribution area of the air guide part of the air conditioner according to an embodiment of the present application.
  • Fig. 9 is a partial schematic diagram of the air conditioner in Embodiment 2 of the present application.
  • Fig. 10 is a schematic cross-sectional view of the air conditioner in Embodiment 2 of the present application.
  • Fig. 11 is a schematic diagram of the air supply state of the air conditioner in Embodiment 2 of the present application when the air outlet resistance is small;
  • Fig. 12 is a schematic diagram of the air supply state of the air conditioner in Embodiment 2 of the present application when the air outlet resistance is relatively large;
  • Fig. 13 is a partial schematic diagram of the side panel of Embodiment 3 of the present application.
  • Fig. 14 is a partial schematic diagram of a side panel of Embodiment 4 of the present application.
  • Fig. 15 is a partial schematic diagram of the side panel of Embodiment 5 of the present application.
  • first, second, etc. are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features .
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • connection and “fixation” should be understood in a broad sense.
  • “fixation” can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined.
  • fixation can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined.
  • FIG. 3 shows the air conditioner in Embodiment 1.
  • the air conditioner includes a heat exchanger 8 , a cross-flow fan and an air deflector 7 .
  • the cross-flow fan includes a volute 1 and a cross-flow fan wheel 6 .
  • the volute 1 is provided with an air inlet 54 and an air outlet 53, and the volute 1 is provided with an air supply duct 5, the air inlet 54 is located at one end of the air supply duct 5, and the air outlet 53 is located at the other end of the air supply duct 5 .
  • Both the heat exchanger 8 and the cross-flow wind wheel 6 are arranged in the air supply duct 5 of the volute 1 .
  • the air conditioner may be an integral air conditioner, and the cross-flow fan is located on the indoor side of the integral air conditioner.
  • the volute 1 includes a shroud 2 , a volute tongue 4 and two side plates 3 .
  • the side plates 3 can be configured as a roughly flat plate structure, and the two side plates 3 are parallel to each other.
  • the shroud 2 and the volute tongue 4 are arranged between two side plates 3 .
  • the shroud 2 is configured as a bent plate.
  • Two side panels 3 are respectively connected to opposite sides of the shroud 2 .
  • the volute tongue 4 can be a plate-shaped structure, and the volute tongue 4 is arranged on the inner side of the shroud 2 .
  • the opposite sides of the volute tongue 4 are connected with two side plates 3 respectively.
  • the board surfaces of the coaming plate 2 and the volute tongue 4 are all perpendicular to the side plate 3 .
  • the coaming plate 2, the volute tongue 4 and two side plates 3 enclose the air supply duct 5.
  • the cross-flow wind wheel 6 is arranged in the air supply duct 5 of the volute 1 .
  • the axis of the cross-flow wind wheel 6 is perpendicular to the two side plates 3, and the cross-flow wind wheel 6 can rotate around its own axis.
  • the inward surface of the side plate 3 is the inner surface of the air outlet duct 51 , and a gap is formed between the side plate 3 and the end surface of the cross-flow fan wheel 6 .
  • the shroud 2 and the volute tongue 4 surround the cross-flow wind wheel 6 halfway around the circumference of the cross-flow wind wheel 6 .
  • the cross-flow wind wheel 6 can drive the airflow to flow along the air supply duct 5 , and the airflow enters the air supply duct 5 from the air inlet 54 , and is discharged from the air outlet 53 after passing through the air supply duct 5 .
  • the cross-flow wind wheel 6 divides the air supply air duct 5 into an air inlet air duct 52 and an air outlet air duct 51 .
  • the air inlet duct 52 is located upstream of the cross-flow fan 6
  • the air outlet duct 51 is located downstream of the cross-flow fan.
  • the air inlet 54 is located at the end of the air inlet duct 52 away from the cross-flow rotor 6
  • the air outlet 53 is located at the end of the outlet duct 51 away from the cross-flow rotor 6 .
  • the air inlet duct 52 and the air outlet duct 51 are respectively located on two sides of the volute tongue 4 .
  • the heat exchanger 8 is arranged in the air intake duct 52 .
  • the airflow exchanges heat with the heat exchanger 8 when passing through the heat exchanger 8, so that the heat exchanger 8 can heat or cool down the airflow.
  • the air deflector 7 is arranged at the air outlet 53 , and the angle of the air outlet and the opening of the air outlet 53 can be adjusted by rotating the air deflector 7 .
  • a flow guiding portion 31 is disposed on the side plate 3 .
  • the guide part 31 is set to reduce the width of the air outlet duct 51 in the axial direction of the cross-flow rotor 6 or guide the airflow to flow downstream of the outlet duct 51 to prevent the airflow in the outlet duct 51 from flowing toward the cross-flow rotor 6. reflow.
  • the flow guide 31 can be configured as a boss.
  • the air guide part 31 is located on the side of the side plate 3 facing the cross-flow fan 6 , and the air guide part 31 protrudes into the air outlet duct 51 .
  • the guide part 31 is located downstream of the cross-flow rotor 6 , and the guide part 31 is also close to the cross-flow rotor 6 .
  • the air pressure on the side of the air outlet duct 51 of the cross-flow wind wheel 6 is positive pressure, and the air pressure on the side of the air inlet air duct 52 of the cross-flow shunt is negative pressure, the air pressure of the cross-flow wind wheel 6 on the side of the air outlet air duct 51 is negative pressure.
  • the air pressure on one side is greater than the air pressure on the air inlet duct 52 side of the cross-flow split flow.
  • the air supply duct 5 is surrounded by a shroud 2, a volute tongue 4 and two side plates 3, and the guide part 31 is arranged on the side plate 3 towards On the inner board surface, the side plate 3 is provided with a deflector 31, and the deflector 31 is close to the end of the cross-flow fan wheel 6, as shown in Figure 5, so that the air outlet duct 51 can be positioned at the deflector.
  • the width at 31 along the axial direction of the cross-flow rotor 6 decreases, which is smaller than the width of the air inlet duct 52 along the axial direction of the cross-flow rotor 6, so that under the extrusion of the air flow, the cross-flow rotor
  • the air pressure near the end of 6 increases, which can weaken or even eliminate the phenomenon that the airflow in the air outlet duct 51 flows back through the gap between the end surface of the cross-flow wind wheel 6 and the side plate 3, thereby improving the efficiency of the cross-flow wind wheel 6. Reduce surge noise.
  • the air guide part 31 is a platform, the top surface of the air guide part 31 is parallel to the board surface of the side plate 3 , and the height H of the air guide part 31 may be 3-6 mm.
  • the height of the air guiding portion 31 is the distance from the end of the air guiding portion 31 close to the side plate 3 to the end of the air guiding portion 31 facing away from the side plate 3 .
  • the air guide part 31 When the height of the air guide part 31 is greater than 6 mm, the air guide part 31 will significantly increase the wind resistance in the outlet air duct 51 , thereby affecting the air flow in the air supply air duct 5 . When the height of the flow guide part 31 is less than 3 mm, the anti-backflow effect of the flow guide part 31 is not particularly obvious.
  • the volute tongue 4 includes a first contraction plate 41 and a first diffuser plate 42 .
  • One end of the first contraction plate 41 is connected to one end of the first diffuser plate 42 .
  • the shroud 2 includes a second contraction plate 21 and a second diffuser plate 22 .
  • the second contraction plate 21 may be a curved plate, and the second contraction plate 21 may extend along an involute.
  • the second diffuser plate 22 may be a flat plate. One end of the second contraction plate 21 is connected to the second diffuser plate 22 . There may be a smooth transition connection between the second contraction plate 21 and the second diffuser plate 22 .
  • Both ends of the first contraction plate 41 are respectively aligned with two ends of the second contraction plate 21 .
  • the first contraction board 41 , the second contraction board 21 and the two side boards 3 enclose the contraction section 511 of the air outlet duct 51 .
  • the first diffuser plate 42 and the second diffuser plate 22 are located on the same side of the constricted section 511 , and the first diffuser plate 42 , the second diffuser plate 22 and the two side plates 3 enclose the diffuser section 512 of the air outlet duct 51 .
  • the distance between the first shrinkage plate 41 and the second shrinkage plate 21 tends to decrease in the direction close to the diffuser section 512
  • the distance between the first diffuser plate 42 and the second diffuser plate 22 tends to decrease in the direction close to the shrinkage section 511 has a decreasing trend.
  • the portion of the air outlet duct 51 between the connection of the first contraction plate 41 and the first diffuser plate 42 to the joint of the second contraction plate 21 and the second diffuser plate 22 is the constriction 513 of the air outlet duct 51 .
  • the constriction 513 is the place where the distance between the shroud 2 and the volute tongue 4 is the smallest.
  • the air outlet duct 51 includes the above-mentioned constriction section 511 and the above-mentioned diffuser section 512 .
  • One end of the contraction section 511 is connected to one end of the diffuser section 512 .
  • the cross-flow rotor 6 is arranged at the end of the constriction section 511 away from the diffuser section 512 . In the direction from the end of the constricted section 511 away from the diffuser section 512 to the end of the constricted section 511 close to the diffuser section 512, the cross-sectional area of the constricted section 511 tends to decrease.
  • the air outlet duct 51 forms a constriction 513 at the junction of the constriction section 511 and the diffuser section 512 , and the constriction 513 is the minimum cross-sectional area of the air outlet duct 51 .
  • the guide part 31 covers at least the area between the side plate 3 in the air outlet duct 51 from the constriction 513 to the cross-flow fan 6 , that is, the guide part 31 covers the side plate 3 in the constricted section 511 Area.
  • the air guide part 31 covers at least this area, it can prevent the airflow in the air outlet duct 51 from passing through the gap between the end face of the through-flow fan wheel 6 and the side plate 3 of the air outlet duct 51, and further improve the overall flow rate. Streamline the efficiency of the wind wheel 6 and eliminate the abnormal sound of surge.
  • the air guide part 31 covers the area between the air outlet 53 and the cross-flow fan wheel 6 of the side plate 3 in the air outlet duct 51, that is, the air guide part 31 covers the side All areas of the plate 3 in the air outlet duct 51 .
  • this area includes the area between the side plate 3 in the air outlet duct 51 from the constriction 513 to the cross-flow fan wheel 6, so that the backflow phenomenon and the abnormal sound of surge can be eliminated.
  • the height of the air guide part 31 gradually changes, and along the direction of the air outlet duct 51 from the air outlet 53 to the cross-flow fan wheel 6, the height of the air guide part 31 gradually increases.
  • the height of the flow guide part 31 is 3-6mm.
  • the height of the air guiding portion 31 is the distance from the end of the air guiding portion 31 close to the side plate 3 to the end of the air guiding portion 31 facing away from the side plate 3 .
  • the height of the guide part 31 near the air outlet 53 is smaller than the height of the guide part 31 near the side of the cross-flow fan 6, so that the resistance of the guide part 31 to the airflow can be reduced and the air volume can be increased.
  • the height of the part of the flow guide part 31 located at the constriction 513 is 3-6 mm, and the flow guide part 31 has an obvious effect of preventing backflow.
  • this design can minimize the obstruction to the airflow while maintaining a good anti-backflow effect.
  • the air conditioner further includes an electric heater 9 .
  • the electric heater 9 may be a PTC electric heater.
  • the electric heater 9 is arranged in the air inlet duct 52 , and the electric heater 9 is located downstream of the heat exchanger 8 .
  • the electric heater 9 can convert electric energy into heat energy after being powered on. When the air conditioner is in the heating mode, the electric heater 9 can assist in heating the airflow.
  • the difference between the cross-flow fan of Embodiment 2 and the cross-flow fan of Embodiment 1 is only that the structure of the flow guide part of the cross-flow fan of Embodiment 2 is different. In order to avoid repetition, only the differences between the two are introduced below.
  • the guide portion 31 a is configured as a guide vane.
  • the air guiding portion 31 a protrudes from the inward surface of the side plate 3 .
  • Each side plate 3 is provided with a plurality of guide parts 31 a, and the plurality of guide parts 31 a are located in the constricted section 511 of the air outlet duct 51 .
  • the number of guide parts 31 a on the guide part 31 may be three.
  • the cross-section of the flow guide 31 a is configured as an airfoil-shaped cross-section.
  • the cross section of the air guiding part 31a includes a front end 311a and a terminal end 312a, the front end 311a is the windward side of the air guiding part 31a, and the rear end is the leeward side of the air guiding part 31a.
  • the front end 311a is round and the end 312a is sharp.
  • At the end of the end 312a there is an included angle ⁇ between the extension direction of the cross section of the flow guiding portion 31a and the flow direction of the airflow at the position of the end, and the included angle ⁇ is an obtuse angle or a flat angle.
  • a plurality of flow guiding parts 31 a are arranged at intervals in sequence from the volute tongue 4 to the shroud 2 .
  • a wind passage gap is formed between two adjacent flow guiding parts 31a.
  • the projections of the plurality of air guiding parts 31 a on the first direction are sequentially connected end to end, wherein the first direction is not only perpendicular to the air outlet direction of the air outlet 53 , but also perpendicular to the axial direction of the cross-flow fan wheel 6 .
  • the angle ⁇ between the extension direction of the cross-section of the air guide portion 31 a and the airflow direction at the position of the end portion ranges from 135° to 180°.
  • the height of the flow guide part 31a ranges from 3mm to 6mm.
  • the height of the air guide part 31 a is the distance from the end of the air guide part 31 a close to the side plate 3 to the end of the air guide part 31 a away from the side plate 3 .
  • the air guide part 31 a When the height of the air guide part 31 a is greater than 6 mm, the air guide part 31 a will significantly increase the wind resistance in the outlet air duct 51 , thereby affecting the air flow in the air supply air duct 5 . When the height of the flow guide part 31a is less than 3 mm, the anti-backflow effect of the flow guide part 31a is not particularly obvious.
  • the difference between the cross-flow fan of Embodiment 3 and the cross-flow fan of Embodiment 1 is only that the structure of the flow guide part of the cross-flow fan of Embodiment 3 is different. In order to avoid repetition, only the differences between the two are introduced below.
  • a flow guiding portion 31 b is provided on the side plate 3 , and the flow guiding portion 31 b is configured as a boss.
  • the air guide portion 31b is located on the side of the side plate 3 facing the cross-flow fan 6 , and the air guide portion 31b protrudes into the air outlet duct 51 .
  • the flow guide part 31 b is located downstream of the cross-flow rotor 6 , and the flow guide part 31 b is also close to the cross-flow rotor 6 .
  • the guide part 31 b covers at least the area of the side plate 3 in the air outlet duct 51 from the constriction 513 to the cross-flow impeller 6 , that is, the guide part 31 b covers the part of the side plate 3 in the constricted section 511 .
  • the height of the air guide portion 31b gradually changes, and along the direction of the air outlet duct 51 from the cross-flow fan 6 to the air outlet 53 , that is, in the direction of air flow, the height of the air guide portion 31b gradually increases.
  • the height of the flow guide part 31b is 3-6 mm.
  • the height of the air guiding portion 31b is the distance from the end of the air guiding portion 31b close to the side plate 3 to the end of the air guiding portion 31b facing away from the side plate 3 .
  • the guide part 31b is provided on the side plate 3 so that the width of the air outlet duct 51 along the axial direction of the cross-flow rotor 6 at the guide part 31b is reduced, and the width is smaller than that of the air inlet duct 52 along the axial direction of the cross-flow rotor 6.
  • the air pressure near the end of the cross-flow wind wheel 6 rises, which can weaken or even eliminate the airflow in the air outlet duct 51 passing through the end surface of the cross-flow wind wheel 6 and
  • the phenomenon of backflow in the gap between the side plates 3 improves the efficiency of the cross-flow wind wheel 6 and reduces the abnormal sound of surge.
  • the height of the guide part 31b near the cross-flow rotor 6 is smaller than the height of the guide part 31b near the air outlet 53, so that the resistance of the guide part 31b to the airflow can be reduced and the air volume can be increased.
  • the height of the part of the flow guide part 31b located at the constriction 513 is 3-6mm, and the flow guide part 31b has an obvious effect of preventing backflow.
  • this design can minimize the obstruction to the airflow while maintaining a good anti-backflow effect.
  • the difference between the cross-flow fan of Embodiment 4 and the cross-flow fan of Embodiment 1 is only that the structure of the flow guide part of the cross-flow fan of Embodiment 4 is different. In order to avoid repetition, only the differences between the two are introduced below.
  • a flow guiding portion 31c is provided on the side plate 3 , and the flow guiding portion 31c is configured as a rib.
  • the air guide part 31 c is located on the side of the side plate 3 facing the cross-flow fan 6 , and the air guide part 31 c protrudes into the air outlet duct 51 .
  • the flow guide portion 31c is located downstream of the cross-flow impeller 6 .
  • the deflector 31c extends from the volute tongue 4 to the shroud 2 .
  • the air guide part 31c may be substantially perpendicular to the air flow direction, and the air flow direction is along the air outlet duct 51 from the cross-flow fan wheel 6 to the air outlet 53.
  • the flow guide part 31c may be disposed at the constriction 513 .
  • the air guide part 31c is provided on the side plate 3 to increase the resistance of the air outlet duct 51 at the guide part 31c. Under the extrusion of the air flow, the air pressure near the end of the cross-flow fan wheel 6 rises, which can weaken or even reduce the air pressure. The phenomenon that the airflow in the air outlet duct 51 flows back through the gap between the end face of the cross-flow rotor 6 and the side plate 3 is eliminated, thereby improving the efficiency of the cross-flow rotor 6 and reducing the abnormal sound of surge.
  • the difference between the cross-flow fan in Embodiment 5 and the cross-flow fan in Embodiment 1 is that the structure of the flow guide part of the cross-flow fan in Embodiment 5 is different. In order to avoid repetition, only the differences between the two are introduced below.
  • each side plate 3 is provided with a plurality of flow guiding parts 31d.
  • the flow guide 31d is configured as a cylinder, preferably a cylinder.
  • the guide part 31d is located on the side of the side plate 3 facing the cross-flow impeller 6 , and the guide part 31d protrudes into the air outlet duct 51 .
  • the flow guide portion 31 d is located downstream of the cross-flow rotor 6 , and the flow guide portion 31 d is also close to the cross-flow rotor 6 .
  • the plurality of flow guides 31d are arranged in a plurality of rows.
  • the multiple rows of air guiding parts 31d are arranged in sequence along the flow direction of the airflow.
  • the air flow direction is the direction along the air outlet duct 51 from the cross-flow fan wheel 6 to the air outlet 53 .
  • a plurality of air guides 31d are arranged along a direction perpendicular to the flow direction of the airflow. All the flow guides 31d in the same row of flow guides have the same height.
  • the height of the air guide part 31d in the single row air guide part increases gradually along the air flow direction of the multiple rows of air guide parts.
  • the number of air guides 31d in the single row of air guides increases along the flow direction of the airflow.
  • the multiple rows of guide parts 31d are distributed in the area between the side plate 3 in the air outlet duct 51 from the constriction 513 to the cross-flow fan 6 , that is, the guide parts 31d are distributed in the part of the side plate 3 in the constricted section 511 .
  • the side plate 3 is provided with multiple rows of deflectors to increase the resistance of the air outlet duct 51 at the deflector 31d.
  • the air pressure near the end of the cross-flow fan wheel 6 rises, which can weaken the It even eliminates the phenomenon that the airflow in the air outlet duct 51 flows back through the gap between the end surface of the cross-flow rotor 6 and the side plate 3 , thereby improving the efficiency of the cross-flow rotor 6 and reducing the abnormal sound of surge.
  • the height of the guide portion 31d gradually increases in the direction of the air flow, and the number of the guide portion 31d gradually increases. Therefore, there is no large sudden change in the wind resistance in the direction of the air flow, so that the output of the air flow is smoother. Therefore, this design can minimize the obstruction to the airflow while maintaining a good anti-backflow effect.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种空调及其贯流风机，其中，贯流风机包括内部设置有送风风道(5)的蜗壳(1)以及设置在所述送风风道(5)内的贯流风轮(6)；其中，所述贯流风轮(6)将所述送风风道(5)分隔为位于所述贯流风轮(6)上游的进风风道(52)和位于所述贯流风轮(6)下游的出风风道(51)，所述出风风道(51)靠近所述贯流风轮(6)的端部的侧壁上设置有导流部(31)。该技术方案旨在解决现有的贯流风机由于气流向两端回流而导致送风效率下降和发出喘振异响声的技术问题。

Description

空调及其贯流风机
交叉引用
本专利申请要求申请日为2021年8月26日、申请号为202110988654.X、名称为“空调及其贯流风机”的中国专利申请和申请日为2021年8月26日、申请号为202122029133.X、名称为“空调及其贯流风机”的中国专利申请的优先权，以上***专利申请的公开内容以引用方式全文并入于此。
技术领域
本发明涉及电器设备领域，具体涉及一种空调及其贯流风机。
背景技术
在相关技术中，空调通常采用贯流风机进行送风。如图1、2所示，贯流风机包括贯流风轮2a和蜗壳1a。贯流风轮2a设置在蜗壳1a内。当蜗壳1a的出风口的开度较小时，贯流风轮2a中部输出的气流会向贯流风轮2a的两端回流从而导致送风效率下降，同时还会发出喘振异响声。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例的主要目的是提供一种贯流风机，旨在解决贯流风机由于气流向两端回流而导致送风效率下降和发出喘振异响声的技术问题。
为实现上述目的，本申请实施例提出的一种贯流风机，其包括内部设置有送风风道的蜗壳以及设置在所述送风风道内的贯流风轮；
其中，所述贯流风轮将所述送风风道分隔为位于所述贯流风轮上游的进风风道和位于所述贯流风轮下游的出风风道，所述出风风道靠近所述贯流风轮的端部的侧壁上设置有导流部。
在一个示意性实施例中，所述蜗壳包括围板、分别覆盖在所述围板两侧的两块侧板以及设置在两块侧板之间且两侧分别连接两块侧板的蜗舌；
两块所述侧板、所述围板和所述蜗舌围合出所述送风风道，所述贯流风轮的轴向垂直于所述侧板，所述导流部设置在所述侧板朝内的板面上且位于所述出风流道靠近所述贯流风轮的一端。
在一个示意性实施例中，所述导流部构造为凸台，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
所述导流部至少覆盖所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域。
在一个示意性实施例中，所述导流部覆盖所述侧板在所述出风风道内的所有区域。
在一个示意性实施例中，所述导流部为平台，所述导流部的高度为3-6mm。
在一个示意性实施例中，所述蜗壳包括设置在所述出风风道背离所述贯流风轮一端的出风口；
沿所述出风风道，从所述出风口到所述贯流风轮的方向上或从所述贯流风轮到所述出风口到的方向上，所述导流部的高度逐渐升高。
在一个示意性实施例中，在所述缩口处，所述导流部的高度为3-6mm。
在一个示意性实施例中，每块所述侧板上设置有多个所述导流部，所述导流部构造为从所述侧板伸出的导流叶片；
所述导流部的横截面包括迎风的前端和背风的末端，在所述末端的端部处所述横截面的延伸方向与该端部所在位置的气流流向之间夹角为钝角或平角；
多个导流部从蜗舌到围板的方向上依次间隔排布。
在一个示意性实施例中，所述夹角的取值范围为135°～180°。
在一个示意性实施例中，所述导流部的高度的取值范围为3-6mm。
在一个示意性实施例中，多个导流部在第一方向上的投影依次首尾相接，贯流风机的出风方向和贯流风轮的轴向均垂直于所述第一方向。
在一个示意性实施例中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
所述导流部分布在所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域内。
在一个示意性实施例中，所述导流部构造为凸筋，所述导流部从所述围板延伸到所述蜗舌。
在一个示意性实施例中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
所述导流部设置在所述缩口处。
在一个示意性实施例中，所述导流部构造为从所述侧板伸出的柱体，所述导流部设置有多个。
在一个示意性实施例中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
多个所述导流部分布在所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域。
在一个示意性实施例中，多个所述导流部排列成多排，在每排导流部中多个导流部的沿垂直于气流流动方向排布；
多排导流部沿气流流动方向依次排布，多排导流部在沿气流流动方向上，单排导流部中的导流部的高度增大且单排导流部中的导流部的数量增大。
本申请实施例还提出了一种空调，其包括如上所述的贯流风机。
本申请实施例中，出风风道在靠近贯流风轮的一端设置导流部，该导流部能提高贯流风道的端部附近的气压和/或引导出风风道靠近贯流风轮一端的气流的流向，从而削弱甚至消除出风风道中的气流通过贯流风轮的端面与蜗壳之间的间隙回流的现象，从而提升贯流风轮的送风效率、降低喘振异响声。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为现有技术中的贯流风机回风的示意图；
图2为现有技术中的贯流风机回风的局部示意图；
图3为本申请实施例一的空调的剖视示意图；
图4为本申请实施例一的蜗壳的局部立体示意图；
图5为本申请实施例一的空调的局部示意图；
图6为本申请实施例一的空调的剖视示意图；
图7为本申请实施例一的空调显示导流部分布区域的剖视示意图；
图8为本申请的一个实施例的空调显示导流部分布区域的剖视示意图；
图9为本申请的实施例二的空调的局部示意图；
图10为本申请的实施例二的空调的剖视示意图；
图11为本申请的实施例二的空调在出风口阻力较小时的送风状态示意图；
图12为本申请的实施例二的空调在出风口阻力较大时的送风状态示意图；
图13为本申请的实施例三的侧板的局部示意图；
图14为本申请的实施例四的侧板的局部示意图；
图15为本申请的实施例五的侧板的局部示意图。
附图标号说明：
1a、蜗壳；2a、贯流风轮；1、蜗壳；2、围板；21、第二收缩板；22、第二扩压板；3、侧板；31、导流部；31a、导流部；311a、前端；312a、末端；31b、导流部；31c、导流部；31d、导流部；4、蜗舌；41、第一收缩板；42、第一扩压板；5、送风风道；51、出风风道；511、收缩段；512、扩压段；513、缩口；52、进风风道；53、出风口；54、进风口；6、贯流风轮；7、导风板；8、换热器；9、电加热器。
本申请实施例目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
详述
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有 作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本申请实施例中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请实施例的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请实施例中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
另外，本申请各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
实施例一
如图3所示，图3显示了实施例一中的空调。该空调包括换热器8、贯流风机和导风板7。贯流风机包括蜗壳1和贯流风轮6。蜗壳1上设置有进风口54和出风口53，蜗壳1内设置有送风风道5，进风口54位于送风风道5的一端，出风口53位于送风风道5的另一端。换热器8和贯流风轮6均设置在蜗壳1的送风风道5内。该空调可以是整体式空调，贯流风机位于整体式空调的室内侧。
在本实施例中，如图3、4所示，蜗壳1包括围板2、蜗舌4和两块侧板3。侧板3可以构造为大致的平板结构，两块侧板3相互平行。围板2和蜗舌4设置在两块侧板3之间。围板2构造为弯板。围板2相背的两侧分别连接两块侧板3。蜗舌4可以为板状结构，蜗舌4设置在围板2的内侧。蜗舌4相背的两侧分别连 接两块侧板3。围板2和蜗舌4的板面均垂直于侧板3。围板2、蜗舌4和两块侧板3围合出送风风道5。
贯流风轮6设置在蜗壳1的送风风道5内。贯流风轮6的轴线垂直于两块侧板3，贯流风轮6能绕自身轴线转动。侧板3朝内的板面为出风风道51的内侧面，侧板3与贯流风轮6的端面之间形成间隙。围板2和蜗舌4在贯流风轮6的周向上半包围贯流风轮6。贯流风轮6能驱动气流沿送风风道5流动，气流从进风口54进入送风风道5，流经送风风道5后从出风口53排出。贯流风轮6将送风风道5分隔为进风风道52和出风风道51。进风风道52位于贯流风轮6的上游，出风风道51位于贯流风机的下游。进风口54位于进风风道52背离贯流风轮6的一端，出风口53位于出风风道51背离贯流风轮6的一端。在本实施例中，进风风道52和出风风道51分别位于蜗舌4的两侧。
换热器8设置在进风风道52内。气流在经过换热器8时与换热器8进行换热，使得换热器8能对该气流进行加热或降温。导风板7设置在出风口53，转动导风板7能调节出风的角度以及出风口53的开度。
侧板3上设置有导流部31。导流部31设置成减小出风风道51在贯流风轮6的轴向的宽度或引导气流向出风风道51的下游流动以避免出风风道51内的气流向贯流风轮6回流。该导流部31可以构造为凸台。导流部31位于侧板3朝向贯流风轮6的一侧，导流部31向出风风道51内凸出。导流部31位于贯流风轮6的下游的位置，导流部31还靠近贯流风轮6。
当导风板7旋转到使出风口53的开度较小的位置时，在未设置导流部31时，贯流风轮6的端部处容易发生喘振异响声，经研究发现，由于贯流风轮6的端面与出风风道51的内表面之间必须设置间隙，该间隙可以防止贯流风轮6的端面与出风风道51的内表面相互摩擦，该间隙的宽度通常在4mm以上，又由于贯流风轮6在出风风道51的一侧气压为正压，贯流分流在进风风道52一侧的气压为负压，贯流风轮6在出风风道51的一侧气压大于贯流分流在进风风道52一侧的气压，当出风口53开度较小时，气流会沿着贯流风轮6的端面与出风风道51的内表面之间的间隙向进风风道52一侧回流，从而导致贯流风轮6的效率下降，并产生喘振异响声。
在本实施例的技术方案中，如图4所示，送风风道5由围板2、蜗舌4和两块侧板3围合而成，导流部31设置在该侧板3朝内的板面上，该侧板3上设置有 导流部31，且该导流部31靠近贯流风轮6的端部，如图5所示，可以使得出风风道51在导流部31处沿贯流风轮6的轴向方向上的宽度减小，该宽度小于进风风道52沿贯流风轮6的轴向方向上的宽度，这样，在气流的挤压下，贯流风轮6的端部附近的气压升高，能削弱甚至消除出风风道51中的气流通过贯流风轮6的端面与侧板3之间的间隙回流的现象，从而提升贯流风轮6的效率、降低喘振异响声。
在一个示意性实施例中，导流部31为平台，导流部31的顶面与侧板3的板面相互平行，导流部31的高度H可以是3-6mm。导流部31的高度为导流部31靠近侧板3的端部到导流部31背离侧板3的端部之间的距离。
当导流部31的高度大于6mm时，导流部31会使得出风风道51内的风阻明显增大，进而影响送风风道5中的气流流动。当导流部31的高度小于3mm时，导流部31防回流的效果不是特别明显。
在一个示意性实施例中，如图6所示，蜗舌4包括第一收缩板41和第一扩压板42。第一收缩板41的一端与第一扩压板42的一端相连接。第一收缩板41与第一扩压板42之间具有夹角，该夹角可以是锐角。
围板2包括第二收缩板21和第二扩压板22。第二收缩板21可以是弯板，第二收缩板21可以是沿渐开线延伸。第二扩压板22可以是平板。第二收缩板21的一端连接于第二扩压板22。第二收缩板21与第二扩压板22之间可以是平滑过渡连接。
第一收缩板41的两端分别与第二收缩板21的两端对齐。第一收缩板41、第二收缩板21以及两块侧板3围合出出风风道51的收缩段511。第一扩压板42和第二扩压板22位于收缩段511的同一侧，第一扩压板42、第二扩压板22以及两块侧板3围合出出风风道51的扩压段512。第一收缩板41和第二收缩板21之间的距离在靠近扩压段512的方向具有缩小的趋势，第一扩压板42和第二扩压板22之间的距离在靠近收缩段511的方向上具有缩小的趋势。出风风道51在第一收缩板41与第一扩压板42的连接处到第二收缩板21与第二扩压板22的连接处之间的部分为出风风道51的缩口513。缩口513为围板2和蜗舌4之间间距最小之处。
出风风道51包括上述收缩段511和上述扩压段512。收缩段511的一端连接于扩压段512的一端。贯流风轮6设置在收缩段511背离扩压段512的一端。从 收缩段511背离扩压段512的一端到收缩段511靠近扩压段512的一端的方向上，收缩段511的横截面积具有缩小的趋势。从扩压段512背离收缩段511的一端到扩压段512靠近收缩段511的一端的方向上，扩压段512的横截面积具有缩小的趋势。出风风道51在收缩段511和扩压段512的连接处形成一个缩口513，该缩口513为出风风道51的横截面积最小处。
如图7所示，导流部31至少覆盖侧板3在出风风道51内从缩口513到贯流风轮6之间的区域，即导流部31覆盖侧板3在收缩段511内的区域。当导流部31覆盖至少覆盖该区域时，能避免出风风道51中的气流通过贯流风轮6的端面与出风风道51的侧板3之间的间隙发生回流，进一步地提升贯流风轮6的效率、消除喘振异响声。
在一个示意性实施例中，如图8所示，导流部31覆盖侧板3在出风风道51内从出风口53到贯流风轮6之间的区域，即导流部31覆盖侧板3在出风风道51内的所有区域。
在导流部31覆盖该区域时，侧板3从出风口53到贯流风轮6之间的区域均覆盖有导流部31，该段出风风道51的壁面连续，外观美观。同时，该区域包含侧板3在出风风道51内从缩口513到贯流风轮6之间的区域，这样设置还能消除回流现象和喘振异响声。
在一个示意性实施例中，导流部31的高度渐变，沿着出风风道51从出风口53到贯流风轮6的方向上，导流部31的高度逐渐升高。在缩口513处，导流部31的高度为3-6mm。导流部31的高度为导流部31靠近侧板3的端部到导流部31背离侧板3的端部之间的距离。
导流部31靠近出风口53一侧的高度小于导流部31靠近贯流风轮6一侧的高度，这样设置能减小导流部31对气流的阻力，提升风量。同时，导流部31位于缩口513处的部分的高度在3-6mm，导流部31具有明显的防回流的效果。
故，这种设计能尽可能减小对气流的阻碍，同时也保持较好的防回流效果。
在一个示意性实施例中，空调还包括电加热器9。电加热器9可以是PTC电加热器。电加热器9设置在进风风道52内，电加热器9位于换热器8的下游。电加热器9在接通电源后能将电能转化成热能。空调在制热模式下，电加热器9可以对气流进行辅助加热。
实施例二
实施例二的贯流风机与实施例一的贯流风机的区别仅在于实施例二的贯流风机在导流部的结构不同。为了避免赘述，下面仅介绍两者的不同之处。
如图9、10所示，导流部31a构造为导流叶片。导流部31a从侧板3朝内的板面伸出。每个侧板3上设置有多个导流部31a，多个导流部31a均位于出风风道51的收缩段511内。导流部31上的导流部31a的数量可以是3个。
导流部31a的横截面构造为翼形截面。导流部31a的横截面包括前端311a和末端312a，前端311a为导流部31a迎风的一侧，后端为导流部31a背风的一侧。前端311a圆滑，末端312a尖锐。在末端312a的端部处，导流部31a的横截面的延伸方向与该端部所在位置的气流流向之间具有一个夹角α，该夹角α为钝角或平角。多个导流部31a从蜗舌4到围板2的方向上依次间隔排布。相邻两个导流部31a之间形成过风间隙。多个导流部31a在第一方向上的投影依次首尾相接，其中，第一方向既垂直于出风口53的出风方向，也垂直于贯流风轮6的轴向。
如图11所示，当出风口53的开度较大时，出风口53处的风阻小，贯流风轮6输出的风量大，无回流风险，且部分气流能从导风叶片之间的过风间隙通过。如图12所示，当出风口53的开度较小时，出风口53的风阻大，贯流风轮6输出的风量小，贯流风轮6的端部两侧的压力下降，当出风风道51中的气流向贯流风轮6的端部方向回流时，气流会被导流部31a阻挡而无法继续回流，从而避免了喘振的发生。
在一个示意性的实施例中，导流部31a的横截面的延伸方向与该端部所在位置的气流流向之间的夹角α的取值范围为135°～180°。
夹角α在该取值范围下，具有最佳的阻挡回流的效果，喘振难以发生。
在一个示意性的实施例中，在末端312a的端部处，导流部31a的高度的取值范围为3-6mm。导流部31a的高度为导流部31a靠近侧板3的端部到导流部31a背离侧板3的端部之间的距离。
当导流部31a的高度大于6mm时，导流部31a会使得出风风道51内的风阻明显增大，进而影响送风风道5中的气流流动。当导流部31a的高度小于3mm时，导流部31a防回流的效果不是特别明显。
实施例三
实施例三的贯流风机与实施例一的贯流风机的区别仅在于实施例三的贯流风机在导流部的结构不同。为了避免赘述，下面仅介绍两者的不同之处。
如图13所示，侧板3上设置有导流部31b，该导流部31b构造为凸台。导流部31b位于侧板3朝向贯流风轮6的一侧，导流部31b向出风风道51内凸出。导流部31b位于贯流风轮6的下游的位置，导流部31b还靠近贯流风轮6。导流部31b至少覆盖侧板3在出风风道51内从缩口513到贯流风轮6之间的区域，即导流部31b覆盖侧板3在收缩段511内的部分。
导流部31b的高度渐变，沿着出风风道51从贯流风轮6到出风口53的方向上，即在气流流动方向上，导流部31b的高度逐渐升高。在缩口513处，导流部31b的高度为3-6mm。导流部31b的高度为导流部31b靠近侧板3的端部到导流部31b背离侧板3的端部之间的距离。
侧板3上设置导流部31b可以使得出风风道51在导流部31b处沿贯流风轮6的轴向方向上的宽度减小，该宽度小于进风风道52沿贯流风轮6的轴向方向上的宽度，这样，在气流的挤压下，贯流风轮6的端部附近的气压升高，能削弱甚至消除出风风道51中的气流通过贯流风轮6的端面与侧板3之间的间隙回流的现象，从而提升贯流风轮6的效率、降低喘振异响声。导流部31b靠近贯流风轮6一侧的高度小于导流部31b靠近出风口53一侧的高度，这样设置能减小导流部31b对气流的阻力，提升风量。同时，导流部31b位于缩口513处的部分的高度在3-6mm，导流部31b具有明显的防回流的效果。
故，这种设计能尽可能减小对气流的阻碍，同时也保持较好的防回流效果。
实施例四
实施例四的贯流风机与实施例一的贯流风机的区别仅在于实施例四的贯流风机在导流部的结构不同。为了避免赘述，下面仅介绍两者的不同之处。
如图14所示，侧板3上设置有导流部31c，该导流部31c构造为凸筋。导流部31c位于侧板3朝向贯流风轮6的一侧，导流部31c向出风风道51内凸出。导流部31c位于贯流风轮6的下游的位置。导流部31c从蜗舌4延伸到围板2。导流 部31c可以大致垂直于气流流动方向，气流流动方向为沿着出风风道51从贯流风轮6到出风口53的方向。导流部31c可以是设置在缩口513处。
侧板3上设置导流部31c可以使得出风风道51在导流部31c处的阻力增大，在气流的挤压下，贯流风轮6的端部附近的气压升高，能削弱甚至消除出风风道51中的气流通过贯流风轮6的端面与侧板3之间的间隙回流的现象，从而提升贯流风轮6的效率、降低喘振异响声。
实施例五
实施例五的贯流风机与实施例一的贯流风机的区别仅在于实施例五的贯流风机在导流部的结构不同。为了避免赘述，下面仅介绍两者的不同之处。
如图15所示，每个侧板3上均设置有多个导流部31d。该导流部31d构造为柱体，优选为圆柱体。导流部31d位于侧板3朝向贯流风轮6的一侧，导流部31d向出风风道51内伸出。导流部31d位于贯流风轮6的下游的位置，导流部31d还靠近贯流风轮6。
多个导流部31d排列成多排。多排导流部31d沿气流流动方向依次排布。气流流动方向即为沿着出风风道51从贯流风轮6到出风口53的方向。在每排导流部中，多个导流部31d的沿垂直于气流流动方向排布。同一排导流部中的所有导流部31d的高度相同。多排导流部在沿气流流动方向上，单排导流部中的导流部31d的高度逐渐增大。多排导流部31d在沿气流流动方向上，单排导流部中的导流部31d的数量增多。
多排导流部31d分布在侧板3在出风风道51内从缩口513到贯流风轮6之间的区域，即导流部31d分布侧板3在收缩段511内的部分。
侧板3上设置多排导流部可以使得出风风道51在导流部31d处的阻力增大，在气流的挤压下，贯流风轮6的端部附近的气压升高，能削弱甚至消除出风风道51中的气流通过贯流风轮6的端面与侧板3之间的间隙回流的现象，从而提升贯流风轮6的效率、降低喘振异响声。在气流流动方向上导流部31d的高度逐渐增大，且导流部31d的数量逐渐增多，因此，在气流流动方向上风阻不会有大的突变，使得气流输出较为顺畅。因此，这种设计能尽可能减小对气流的阻碍，同时也保持较好的防回流效果。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (18)

  1. 一种贯流风机，包括内部设置有送风风道的蜗壳以及设置在所述送风风道内的贯流风轮；
    其中，所述贯流风轮将所述送风风道分隔为位于所述贯流风轮上游的进风风道和位于所述贯流风轮下游的出风风道，所述出风风道靠近所述贯流风轮的端部的侧壁上设置有导流部。
  2. 根据权利要求1所述的贯流风机，其中，所述蜗壳包括围板、分别覆盖在所述围板两侧的两块侧板以及设置在两块侧板之间且两侧分别连接两块侧板的蜗舌；
    两块所述侧板、所述围板和所述蜗舌围合出所述送风风道，所述贯流风轮的轴向垂直于所述侧板，所述导流部设置在所述侧板朝内的板面上且位于所述出风流道靠近所述贯流风轮的一端。
  3. 根据权利要求2所述的贯流风机，其中，所述导流部构造为凸台，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
    所述导流部至少覆盖所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域。
  4. 根据权利要求3所述的贯流风机，其中，所述导流部覆盖所述侧板在所述出风风道内的所有区域。
  5. 根据权利要求2至4中任一项所述的贯流风机，其中，所述导流部为平台，所述导流部的高度为3-6mm。
  6. 根据权利要求3或4所述的贯流风机，其中，所述蜗壳包括设置在所述出风风道背离所述贯流风轮一端的出风口；
    沿所述出风风道，从所述出风口到所述贯流风轮的方向上或从所述贯流风轮到所述出风口到的方向上，所述导流部的高度逐渐升高。
  7. 根据权利要求6所述的贯流风机，其中，在所述缩口处，所述导流部的高度为3-6mm。
  8. 根据权利要求2所述的贯流风机，其中，每块所述侧板上设置有多个所述导流部，所述导流部构造为从所述侧板伸出的导流叶片；
    所述导流部的横截面包括迎风的前端和背风的末端，在所述末端的端部处所述横截面的延伸方向与该端部所在位置的气流流向之间夹角为钝角或平角；
    多个导流部从蜗舌到围板的方向上依次间隔排布。
  9. 根据权利要求8所述的贯流风机，其中，所述夹角的取值范围为135°～180°。
  10. 根据权利要求8所述的贯流风机，其中，所述导流部的高度的取值范围为3-6mm。
  11. 根据权利要求8所述的贯流风机，其中，多个导流部在第一方向上的投影依次首尾相接，贯流风机的出风方向和贯流风轮的轴向均垂直于所述第一方向。
  12. 根据权利要求8至11中任一项所述的贯流风机，其中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
    所述导流部分布在所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域内。
  13. 根据权利要求2所述的贯流风机，其中，所述导流部构造为凸筋，所述导流部从所述围板延伸到所述蜗舌。
  14. 根据权利要求13所述的贯流风机，其中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
    所述导流部设置在所述缩口处。
  15. 根据权利要求2所述的贯流风机，其中，所述导流部构造为从所述侧板伸出的柱体，所述导流部设置有多个。
  16. 根据权利要求15所述的贯流风机，其中，在所述出风风道上设置有一个缩口，在所述缩口处所述围板和所述蜗舌之间的间距最小；
    多个所述导流部分布在所述侧板在出风风道内从所述缩口到所述贯流风轮之间的区域。
  17. 根据权利要求16所述的贯流风机，其中，多个所述导流部排列成多排，在每排导流部中多个导流部的沿垂直于气流流动方向排布；
    多排导流部沿气流流动方向依次排布，多排导流部在沿气流流动方向上，单排导流部中的导流部的高度增大且单排导流部中的导流部的数量增大。
  18. 一种空调，其中，包括如权利要求1-17中任一项所述的贯流风机。
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CN106871238A (zh) * 2017-02-22 2017-06-20 美的集团股份有限公司 送风组件和空调室内机
CN206771534U (zh) * 2017-05-12 2017-12-19 广州华凌制冷设备有限公司 空调室内机
CN209558542U (zh) * 2019-02-01 2019-10-29 美的集团武汉制冷设备有限公司 空调室内机及具有其的空调器
CN213778127U (zh) * 2020-09-30 2021-07-23 广东美的制冷设备有限公司 一种导流装置、空调室内机、空调室外机及空调器
CN213478685U (zh) * 2020-10-13 2021-06-18 重庆美的制冷设备有限公司 用于贯流风轮的风道部件和具有其的空气调节设备
CN112212491A (zh) * 2020-10-26 2021-01-12 珠海格力电器股份有限公司 一种蜗壳、空调室内机和空调器
CN112177947A (zh) * 2020-10-28 2021-01-05 珠海格力电器股份有限公司 一种风道组件及家用电器

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