WO2019001107A1 - 贯流风轮和暖风机 - Google Patents

贯流风轮和暖风机 Download PDF

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Publication number
WO2019001107A1
WO2019001107A1 PCT/CN2018/083795 CN2018083795W WO2019001107A1 WO 2019001107 A1 WO2019001107 A1 WO 2019001107A1 CN 2018083795 W CN2018083795 W CN 2018083795W WO 2019001107 A1 WO2019001107 A1 WO 2019001107A1
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WO
WIPO (PCT)
Prior art keywords
cross
flow wind
wind wheel
blades
blade
Prior art date
Application number
PCT/CN2018/083795
Other languages
English (en)
French (fr)
Inventor
王庆
马列
谭成波
Original Assignee
广东美的环境电器制造有限公司
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
Application filed by 广东美的环境电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的环境电器制造有限公司
Priority to JP2019565827A priority Critical patent/JP2020521912A/ja
Priority to US16/623,404 priority patent/US20200158137A1/en
Priority to EP18823842.2A priority patent/EP3633206B1/en
Publication of WO2019001107A1 publication Critical patent/WO2019001107A1/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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Definitions

  • the invention relates to the technical field of heaters, in particular to a cross flow wind wheel and a heater fan using the cross flow wind wheel.
  • the heater is widely used because of its advantages of convenient use and simple operation.
  • the noise of the existing heaters is generally higher, which affects the user's comfort.
  • the main object of the present invention is to provide a cross-flow wind wheel, which aims to reduce the operating noise of the heater and improve the user's comfort.
  • the cross-flow wind wheel of the present invention comprises two oppositely disposed fixing plates and a plurality of blades connected between the two fixing plates, and the plurality of blades are arranged along the outer edge of the fixing plate.
  • the blade is twisted along the axial direction of the cross-flow wind wheel, and the relative twist angle of the two ends of the blade is greater than or equal to 5° and less than or equal to 40°.
  • the blade is disposed obliquely between the two fixed plates along the axial direction of the cross-flow wind wheel, and the blade forms an angle ⁇ with the fixed plate, 85° ⁇ 88°.
  • the cross section of the blade is curved, and the chord length of the arc ranges from 6 mm to 8 mm.
  • the thickness of the blade ranges from 0.3 mm to 0.5 mm.
  • the outer diameter D of the cross flow wind wheel ranges from 30 mm to 100 mm, and/or the length of the cross flow wind wheel ranges from 150 mm to 600 mm.
  • the number of blades of the cross flow wind wheel is 18 pieces to 25 pieces.
  • the cross-sectional diameter of the cross-flow wind wheel ranges from 0.7 to 0.85.
  • the cross flow wind wheel comprises a plurality of first blades and a plurality of second blades, a width of the first blades is greater than a width of the second blades, and a plurality of the first blades and a plurality of the second blades alternate Set; and/or,
  • the spacing between the blades is alternately set.
  • the present invention also provides a heater, the heater comprising a housing and a duct assembly disposed in the housing, the duct assembly including a volute and a cross-flow wind wheel, the cross-flow wind wheel comprising two opposite settings a fixing plate and a plurality of blades connected between the two fixing plates, a plurality of the blades are arranged along the outer edge of the fixing plate, and the blades are twisted along the axial direction of the cross flow wind wheel.
  • the relative twist angles of the two ends of the blade are greater than or equal to 5° and less than or equal to 40°, and the cross-flow wind wheel is mounted on the volute.
  • one end of the cross flow wind wheel is provided with a rotating shaft, and the volute is provided with a bearing sleeve, and the rotating shaft is received in the bearing sleeve.
  • the cross-flow wind wheel is not provided with an end portion of the rotating shaft, and the air duct assembly further includes a motor mounted on the volute, the sleeve is sleeved on the motor Output shaft.
  • the blade is disposed obliquely between the two fixed plates along the axial direction of the cross-flow wind wheel, and the blade forms an angle ⁇ with the fixed plate, 85° ⁇ 88°.
  • the cross section of the blade is curved, and the chord length of the arc ranges from 6 mm to 8 mm.
  • the thickness of the blade ranges from 0.3 mm to 0.5 mm.
  • the outer diameter D of the cross flow wind wheel ranges from 30 mm to 100 mm, and/or the length of the cross flow wind wheel ranges from 150 mm to 600 mm.
  • the number of blades of the cross flow wind wheel is 18 pieces to 25 pieces.
  • the cross-sectional diameter of the cross-flow wind wheel ranges from 0.7 to 0.85.
  • the cross flow wind wheel comprises a plurality of first blades and a plurality of second blades, a width of the first blades is greater than a width of the second blades, and a plurality of the first blades and a plurality of the second blades alternate Set; and/or,
  • the spacing between the blades is alternately set.
  • each of the blades of the cross-flow wind wheel is disposed as a blade that is twisted along the axial direction of the cross-flow wind wheel, and the relative twist angle of each of the two ends of the blade is greater than or equal to 5° and less than or equal to 40°. Therefore, when the cross-flow wind wheel is in operation, each part on the same blade can pass through a minimum gap between the cross-flow wind wheel and the volute at different times, so that the types and frequencies of noise generated in each part of the same blade are diversified.
  • the cross-flow wind turbine operates with more types of noise and a wider frequency range, thereby avoiding resonance peaks caused by superposition of noise of the same kind and frequency, that is, avoiding frequency concentration of noise, reducing noise intensity, and thereby reducing
  • the working noise of the heater increases the user's comfort.
  • FIG. 1 is an exploded view of an embodiment of a heater of the present invention
  • Figure 2 is an exploded view of the air duct assembly of Figure 1;
  • Figure 3 is a schematic enlarged view of the portion III in Figure 2;
  • Figure 4 is a plan view of the cross flow wind wheel of Figure 2;
  • Figure 5 is a schematic enlarged view of the structure at V in Figure 2;
  • Figure 6 is a top plan view of another embodiment of a cross flow wind wheel of the present invention.
  • Label name Label name 100 heater 315b Second blade 10 Base 33 Volute 30 Air duct component 331 Bearing sleeve 31 Cross flow wind wheel 35 Motor 311 Fixed plate 351 Output shaft 3111 Rotating shaft 50 case 3113 Bushing 51 Front shell 315 blade 53 Back shell 315a First blade
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms "connected”, “fixed” and the like should be understood broadly, unless otherwise clearly defined and limited.
  • “fixed” may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the present invention proposes a cross flow wind wheel 31.
  • the cross flow wind wheel 31 of the present invention is applied to a heater 100, and the heater 100 includes:
  • the housing 50 is disposed on the base 10;
  • the housing 50 includes a front housing 51 and a rear housing 53 connected to the front housing 51.
  • the front housing 51 and the rear housing 53 are enclosed to form a receiving cavity (not shown) for accommodating the air duct assembly of the heater 100. 30. Heating components (not shown), etc.
  • the front casing 51 is provided with an air outlet (not shown), and the rear casing 53 is provided with an air inlet (not shown).
  • the airflow enters the receiving cavity in the casing 50 from the air inlet of the rear casing 53, and then accelerates through the air duct assembly 30 in sequence.
  • the heating unit is heated and finally blown out by the air outlet of the front case 51.
  • the air duct assembly 30 of the air heater 100 includes a volute 33 and a cross flow wind wheel 31 provided in the volute 33.
  • the cross flow wind wheel 31 includes two opposite fixed plates 311 and two fixed plates. a plurality of blades 315 between 311, a plurality of the blades 315 are arranged along the outer edge of the fixed plate 311, and the blades 315 are twisted along the axial direction of the cross flow wind wheel 31, at both ends of the blade 315
  • the relative twist angle is greater than or equal to 5° and less than or equal to 40°.
  • the horizontal placement of the heater 100 is now introduced as an example.
  • each of the fixing plates 311 has a circular shape and extends in a horizontal direction.
  • the two fixing plates 311 are arranged in a vertical direction, and the plate surfaces are arranged in parallel.
  • Two ends of each of the blades 315 are respectively fixed to the two fixing plates 311, and the ends of each of the blades 315 are located at the outer edge of the fixing plate 311.
  • the cross flow wind wheel 31 is substantially cylindrical and its axis extends in a vertical direction.
  • each of the blades 315 passes through the plurality of reinforcing plates to function to strengthen the structural strength of the cross-flow wind wheel 31.
  • the relative twist angles of the upper and lower ends of the blade 315 are greater than or equal to 5° and less than or equal to 40° (ie, between 5° and 40°).
  • each part on the same blade 315 can pass through the minimum gap between the cross flow wind wheel 31 and the volute 33 at different times, so that noise generated in each part of the same blade 315 is generated.
  • the variety and frequency are diverse.
  • each blade 315 of the cross flow wind wheel 31 is to provide as a blade 315 which is twisted along the axial direction of the cross flow wind wheel 31, and to make the opposite ends of each blade 315
  • the torsion angle is greater than or equal to 5° and less than or equal to 40°, so that when the cross flow wind wheel 31 is in operation, each part on the same blade 315 can pass through a minimum gap between the cross flow wind wheel 31 and the volute 33 at different times, so that
  • the types and frequencies of noise generated in various parts of the same blade 315 are diversified, so that the cross-flow wind wheel 31 operates with more types of noise and a wider frequency range, thereby avoiding resonance peaks caused by superposition of noise of the same kind and frequency. That is, the frequency concentration of the noise is avoided, the noise intensity is reduced, the working noise of the heater 100 is reduced, and the user's use comfort is improved.
  • the blade 315 is disposed between the two fixing plates 311 obliquely along the axial direction of the cross flow wind wheel 31, and an angle ⁇ , 85 is formed between the blade 315 and the fixing plate 311. ° ⁇ 88°.
  • each of the blades 315 has an elongated shape, and each of the blades 315 is a diagonal blade 315 or a spiral blade 315 which is disposed obliquely along the axial direction of the cross flow wind wheel 31 (ie, the vertical direction, that is, the up and down direction), that is, The extending direction of each of the blades 315 is not parallel to the axial direction of the cross-flow wind wheel 31, and the angle between each of the blades 315 and the fixed plate 311 is ⁇ , and 85° ⁇ ⁇ ⁇ 88°.
  • the minimum gap thereby further avoiding the generation and superposition of noise of the same kind and frequency, avoiding the frequency concentration of the noise and reducing the noise intensity; on the other hand, such an arrangement can also make the blades of the cross-flow wind wheel 31 in the circumferential direction
  • the 315 can pass through the minimum gap between the cross-flow wind wheel 31 and the volute 33 at different time intervals, avoiding the noise of the same kind and frequency generated by the respective blades 315, thereby avoiding the noise of the same kind and frequency generated by the respective blades 315.
  • Superposition further reducing the noise intensity.
  • the blade 315 has an arc shape in cross section, and the arc has a chord length ranging from 6 mm to 8 mm.
  • the cross section of the blade 315 in the axial plane direction of the vertical cross flow wind wheel 31 is substantially curved, and the chord length of the arc is 6 mm to 8 mm.
  • the thickness of the blade 315 ranges from 0.3 mm to 0.5 mm.
  • the outer diameter D of the cross flow wind wheel 31 ranges from 30 mm to 100 mm, and/or the length of the cross flow wind wheel ranges from 150 mm to 600 mm.
  • the range of the wheel diameter ratio d/D of the cross flow wind wheel 31 is 0.7 to 0.85.
  • each blade 315 close to the axial center of the cross flow wind wheel 31 is substantially on the same circumference, and the ratio d/D of the diameter d of the circumference to the outer diameter D of the cross flow wind wheel 31 is in the range of d/D. It is 0.7 ⁇ 0.85.
  • the air volume of the cross-flow wind wheel 31 can be effectively improved, and at the same time, the cross-flow wind wheel 31 has less consumables and light weight, thereby effectively reducing the load of the driving motor 35 under a certain air volume, thereby achieving a certain air volume to reduce the warming. Fan 100 noise purpose.
  • the number of the blades 315 of the cross flow wind wheel 31 is 18 pieces to 25 pieces. In this way, the air inlet and the wind sweep of the blade 315 can be further facilitated, so that the cross flow wind wheel 31 can generate a larger air volume, thereby reducing the load of the motor 35 under a certain air volume condition, thereby reducing the noise of the heater 100. .
  • the cross flow wind wheel 31 includes a plurality of first blades 315a and a plurality of second blades 315b, the first blades 315a having a width greater than the first The width of the two blades 315b, a plurality of the first blades 315a and a plurality of the second blades 315b are alternately disposed.
  • chord length of the first blade 315a is set to 7.4 mm, the wheel diameter ratio thereof is set to 0.79; the chord length of the second blade 315b is set to 7.0 mm, and the wheel diameter ratio is set to 0.78.
  • the large and small blades are alternately arranged, not only can maintain a high air volume, but also can use the large and small blades to alternately sweep the wind, effectively disperse the noise frequency generated by the blade 315 sweeping wind, and reduce the howling noise generated by the excessive noise in the same frequency band, thereby The noise of the heater 100 is effectively reduced.
  • the pitch between the blades 315 is alternately set.
  • the blades 315 can be alternately arranged at intervals of 5.0 mm and 5.3 mm. In this way, the noise intensity can also be dispersed to achieve the purpose of noise reduction.
  • the present invention also provides a heater 100 comprising a housing 50 and a duct assembly 30 disposed within the housing 50, the duct assembly 30 including a volute 33 and as previously described
  • the cross flow wind wheel 31 Since all the technical solutions of all the foregoing embodiments are adopted in the present air heater 100, at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments are not repeatedly described herein.
  • the cross flow wind wheel 31 is mounted on the volute 33.
  • one end of the cross-flow wind wheel 31 is provided with a rotating shaft 3111.
  • the volute 33 is provided with a bearing sleeve 331, and the rotating shaft 3111 is received in the bearing sleeve 331.
  • a rotating shaft 3111 is fixed on the fixing plate 311 of the upper end of the cross-flow wind wheel 31.
  • the rotating shaft 3111 is protruded from the surface of the fixing plate 311 facing the volute 33. Accordingly, the volute 33 faces the rotating shaft 3111.
  • a bearing sleeve 331 is fixed at the fixed position, and a bearing is fixed in the bearing sleeve 331.
  • the rotating shaft 3111 is received in the bearing sleeve 331 and inserted into the inner ring of the bearing.
  • the bearing sleeve 331 may be a rubber bearing sleeve.
  • the vibration during the rotation of the cross-flow wind wheel 31 can be effectively reduced, so that the rotation of the cross-flow wind wheel 31 is more stable, so that the structure of the heater 100 is more stable, and at the same time, the vibration is reduced, the structure is stabilized, and the heater can be effectively reduced. 100 noise.
  • the end of the rotating wind wheel 31 not provided with the rotating shaft 3111 is provided with a sleeve 3113, and the air duct assembly 30 further includes a motor 35 mounted on the volute 33.
  • the sleeve 3113 is sleeved on the output shaft 351 of the motor 35.
  • the fixing plate 311 of the cross-flow wind wheel 31 that is not provided with one end of the rotating shaft 3111 is fixed with a sleeve 3113 which is sleeved and held by the output shaft 351 of the motor 35.
  • the motor 35 rotates
  • the output shaft 351 of the motor 35 drives the sleeve 3113 to rotate
  • the sleeve 3113 is fixed to the plate fixed plate to drive the cross-flow wind wheel 31 to rotate.
  • the rotating shaft 3111 at the other end rotates in the bearing sleeve 331.
  • the sleeve 3113 can be sleeved with a silicone sleeve and connected to the output shaft 351 of the motor 35 by an interference fit, without screws, and the assembly is simple and convenient.
  • the reduction of the parts reduces the vibration between the components on the one hand, and reduces the load of the motor 35 on the other hand, thereby effectively reducing the noise of the heater 100.

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

Abstract

一种贯流风轮和应用该贯流风轮的暖风机，其中，贯流风轮（31）包括相对设置的二固定板（311）和连接于二固定板（311）之间的若干叶片（315），若干叶片（315）沿固定板（311）的外缘间隔排布，叶片（315）沿贯流风轮（31）的轴线方向呈扭转设置，叶片（315）两端的相对扭转角度大于等于5°、小于等于40°。该贯流风轮能够降低暖风机的工作噪音。

Description

贯流风轮和暖风机
技术领域
本发明涉及暖风机技术领域，特别涉及一种贯流风轮和应用该贯流风轮的暖风机。
背景技术
目前，暖风机作为一种新型的取暖设备，因其使用方便、操作简单等优点而被普遍使用。但是，现有暖风机工作时的噪音普遍较高，较为影响用户的使用舒适度。
发明内容
本发明的主要目的是提供一种贯流风轮，旨在降低暖风机的工作噪音，提高用户的使用舒适度。
为实现上述目的，本发明提出的贯流风轮包括二相对设置的固定板和连接于二所述固定板之间的若干叶片，若干所述叶片沿所述固定板的外缘间隔排布，所述叶片沿所述贯流风轮的轴线方向呈扭转设置，所述叶片两端的相对扭转角度大于等于5°、小于等于40°。
可选地，所述叶片沿所述贯流风轮的轴线方向倾斜设置于二所述固定板之间，所述叶片与所述固定板之间形成夹角θ，85°≤θ≤88°。
可选地，所述叶片的横截面为弧形，该弧形的弦长范围为6mm~8mm。
可选地，所述叶片的厚度范围为0.3mm~0.5mm。
可选地，所述贯流风轮的外径D的范围为30mm~100mm，且/或，所述贯流风轮的长度范围为150mm~600mm。
可选地，所述贯流风轮的叶片数量为18片~25片。
可选地，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
可选地，所述贯流风轮包括若干第一叶片和若干第二叶片，所述第一叶片的宽度大于所述第二叶片的宽度，若干所述第一叶片和若干所述第二叶片交替设置；且/或，
所述叶片之间的间距大小交替设置。
本发明还提出一种暖风机，所述暖风机包括壳体和设于所述壳体内的风道组件，所述风道组件包括蜗壳及贯流风轮，所述贯流风轮包括二相对设置的固定板和连接于二所述固定板之间的若干叶片，若干所述叶片沿所述固定板的外缘间隔排布，所述叶片沿所述贯流风轮的轴线方向呈扭转设置，所述叶片两端的相对扭转角度大于等于5°、小于等于40°，所述贯流风轮装设于所述蜗壳。
可选地，所述贯流风轮的一端设有转轴，所述蜗壳设有轴承套，所述转轴容置于所述轴承套内。
可选地，所述贯流风轮未设有所述转轴的端部设有轴套，所述风道组件还包括装设于所述蜗壳的电机，所述轴套套设于所述电机的输出轴。
可选地，所述叶片沿所述贯流风轮的轴线方向倾斜设置于二所述固定板之间，所述叶片与所述固定板之间形成夹角θ，85°≤θ≤88°。
可选地，所述叶片的横截面为弧形，该弧形的弦长范围为6mm~8mm。
可选地，所述叶片的厚度范围为0.3mm~0.5mm。
可选地，所述贯流风轮的外径D的范围为30mm~100mm，且/或，所述贯流风轮的长度范围为150mm~600mm。
可选地，所述贯流风轮的叶片数量为18片~25片。
可选地，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
可选地，所述贯流风轮包括若干第一叶片和若干第二叶片，所述第一叶片的宽度大于所述第二叶片的宽度，若干所述第一叶片和若干所述第二叶片交替设置；且/或，
所述叶片之间的间距大小交替设置。
本发明的技术方案，通过将贯流风轮的每一叶片设置为沿该贯流风轮的轴线方向呈扭转设置的叶片，且使每一叶片两端的相对扭转角度大于等于5°、小于等于40°，可使得该贯流风轮在工作时，同一叶片上的各个部位能够于不同时刻经过贯流风轮与蜗壳之间的最小间隙，使得同一叶片上各个部位产生的噪音的种类和频率多样化，使得贯流风轮运转时的噪音的种类更多、频率范围更加宽泛，从而避免相同种类和频率的噪音叠加而带来的谐振峰值，即避免了噪音的频率集中，降低了噪音强度，进而降低了暖风机的工作噪音，提高了用户的使用舒适度。
附图说明
为了更清楚地说明本发明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发明的一些实施例，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为本发明暖风机一实施例的***图；
图2为图1中风道组件的***图；
图3为图2中Ⅲ处的放大结构示意图；
图4为图2中贯流风轮的俯视图；
图5为图2中Ⅴ处的放大结构示意图；
图6为本发明贯流风轮另一实施例的俯视图。
附图标号说明：
标号 名称 标号 名称
100 暖风机 315b 第二叶片
10 底座 33 蜗壳
30 风道组件 331 轴承套
31 贯流风轮 35 电机
311 固定板 351 输出轴
3111 转轴 50 壳体
3113 轴套 51 前壳
315 叶片 53 后壳
315a 第一叶片
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
需要说明，本发明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，在本发明中如涉及“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。在本发明的描述中，“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。
在本发明中，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发明中的具体含义。
另外，本发明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，也不在本发明要求的保护范围之内。
本发明提出一种贯流风轮31。
如图1和图2所示，本发明贯流风轮31应用于一暖风机100中，该暖风机100包括：
底座10；
壳体50，所述壳体50设于所述底座10；
具体地，壳体50包括前壳51和与该前壳51连接的后壳53，前壳51与后壳53围合形成一容纳腔（未标示），用于容纳暖风机100的风道组件30、加热组件（未图示）等。前壳51开设有出风口（未标示），后壳53开设有进风口（未标示），气流由后壳53的进风口进入壳体50内的容纳腔，之后依次经过风道组件30加速和加热组件加热，最后由前壳51的出风口吹出。
该暖风机100的风道组件30包括蜗壳33和设于该蜗壳33的贯流风轮31。
具体地，如图2、图3、及图5所示，在本发明贯流风轮31一实施例中，所述贯流风轮31包括二相对设置的固定板311和连接于二所述固定板311之间的若干叶片315，若干所述叶片315沿所述固定板311的外缘间隔排布，所述叶片315沿所述贯流风轮31的轴线方向呈扭转设置，所述叶片315两端的相对扭转角度大于等于5°、小于等于40°。
现以暖风机100水平放置为例进行介绍。
本实施例中，每一固定板311均呈圆形，且沿水平方向延伸设置，二固定板311沿竖直方向排布，且板面平行设置。每一叶片315的两端分别固定于二固定板311，且每一叶片315的端部均位于固定板311的外缘。这样，贯流风轮31大致呈圆柱形，且其轴线呈竖直方向延伸设置。并且，二固定板311之间还设置有若干相互平行且间隔设置的加强板（未标示），每一叶片315均穿过若干加强板，以起到加强贯流风轮31结构强度的作用。
具体地，如图2所示，沿贯流风轮31的轴线方向每上升一定距离，叶片315就沿该贯流风轮31的周向扭转一定角度，并且由下端至上端逐渐扭转，最终使得每一叶片315上下两端（即分别靠近二固定板311的两端）的相对扭转角度大于等于5°、小于等于40°（即在5°~40°之间）。这样，便可使得该贯流风轮31在工作时，同一叶片315上的各个部位能够于不同时刻经过贯流风轮31与蜗壳33之间的最小间隙，使得同一叶片315上各个部位产生的噪音的种类和频率多样化。
因此，可以理解的，本发明的技术方案，通过将贯流风轮31的每一叶片315设置为沿该贯流风轮31的轴线方向呈扭转设置的叶片315，且使每一叶片315两端的相对扭转角度大于等于5°、小于等于40°，可使得该贯流风轮31在工作时，同一叶片315上的各个部位能够于不同时刻经过贯流风轮31与蜗壳33之间的最小间隙，使得同一叶片315上各个部位产生的噪音的种类和频率多样化，使得贯流风轮31运转时的噪音的种类更多、频率范围更加宽泛，从而避免相同种类和频率的噪音叠加而带来的谐振峰值，即避免了噪音的频率集中，降低了噪音强度，进而降低了暖风机100的工作噪音，提高了用户的使用舒适度。
如图3所示，所述叶片315沿所述贯流风轮31的轴线方向倾斜设置于二所述固定板311之间，所述叶片315与所述固定板311之间形成夹角θ，85°≤θ≤88°。
具体地，每一叶片315均呈长条形，每一叶片315均为沿贯流风轮31轴线方向（即竖直方向，亦即上下方向）倾斜设置的斜叶片315或者螺旋叶片315，即，每一叶片315的延伸方向均与贯流风轮31轴线方向不平行，并且，每一叶片315与固定板311的夹角为θ，且85°≤θ≤88°。这样，较垂直叶片（即与固定板311呈垂直设置的叶片315）而言，一方面，进一步保障了同一叶片315上的各个部位能够于不同时刻经过贯流风轮31与蜗壳33之间的最小间隙，从而进一步避免了相同种类和频率的噪音的产生和叠加，避免了噪音的频率集中，降低了噪音强度；另一方面，这样的设置，还可使得贯流风轮31周向上的各个叶片315能够相隔不同的时间间隔经过贯流风轮31与蜗壳33之间的最小间隙，避免了各个叶片315产生相同种类和频率的噪音，进而避免了各个叶片315产生的相同种类和频率的噪音的叠加，进一步降低了噪音强度。
如图4所示，所述叶片315的横截面为弧形，该弧形的弦长范围为6mm~8mm。
具体地，叶片315于垂直贯流风轮31轴线平面方向上的截面大致呈弧形，该弧形的弦长范围是6mm~8mm。
所述叶片315的厚度范围为0.3mm~0.5mm。
所述贯流风轮31的外径D的范围为30mm~100mm，且/或，所述贯流风轮的长度范围为150mm~600mm。
所述贯流风轮31的轮径比d/D的范围为0.7~0.85。
具体地，请进一步参阅图4，每一叶片315靠近贯流风轮31轴心的一侧大致位于同一圆周上，该圆周的直径d与贯流风轮31的外径D的比值d/D的范围是0.7~0.85。
通过上述参数的设置，可有效提高贯流风轮31的风量，同时使得贯流风轮31的耗材少、重量轻，从而有效降低了一定风量下驱动电机35的负载，进而达到了一定风量下降低暖风机100噪音的目的。
如图4所示，所述贯流风轮31的叶片315数量为18片~25片。如此，可进一步有利于叶片315的进风与扫风，使得贯流风轮31能产生更大的风量，从而在风量一定的条件下，降低电机35的负荷，进而使得暖风机100的噪音得以降低。
如图6所示，在本发明贯流风轮31另一实施例中，所述贯流风轮31包括若干第一叶片315a和若干第二叶片315b，所述第一叶片315a的宽度大于所述第二叶片315b的宽度，若干所述第一叶片315a和若干所述第二叶片315b交替设置。
具体地，第一叶片315a的弦长设置为7.4mm，其轮径比设置为0.79；第二叶片315b的弦长设置为7.0mm，其轮径比设置为0.78。
这样，大小叶片交替排列，不仅可保持较高的风量，同时还可利用大小叶片交替扫风，有效分散叶片315扫风产生的噪音频率，降低同一频段噪音过强产生的啸叫声，从而使得暖风机100的噪音得以有效降低。
此外，在本发明贯流风轮31又一实施例中，所述叶片315之间的间距大小交替设置。具体地，叶片315间可按照间距为5.0mm、5.3mm两种间距进行交替排布。这样，亦能分散噪音强度，达到降噪的目的。
本发明还提出一种暖风机100，所述暖风机100包括壳体50和设于所述壳体50内的风道组件30，所述风道组件30包括蜗壳33及如前所述的贯流风轮31。由于本暖风机100采用了前述所有实施例的全部技术方案，因此至少具有前述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，所述贯流风轮31装设于所述蜗壳33。
如图2和图5所示，所述贯流风轮31的一端设有转轴3111，所述蜗壳33设有轴承套331，所述转轴3111容置于所述轴承套331内。
本实施例中，位于贯流风轮31靠上一端的固定板311上固设有转轴3111，转轴3111凸设于该固定板311面向蜗壳33的表面，相应地，蜗壳33面向该转轴3111处固设有轴承套331，该轴承套331内固设有轴承。转轴3111容置于该轴承套331内，且插设于轴承的内圈中。具体地，轴承套331可选用橡胶轴承套。
如此，能够有效减少贯流风轮31转动过程中的振动，使得贯流风轮31的转动更加平稳，使得暖风机100的结构更加稳定，同时，振动的减少、结构的稳定，还可有效降低暖风机100的噪音。
如图2和图3所示，所述贯流风轮31未设有所述转轴3111的端部设有轴套3113，所述风道组件30还包括装设于所述蜗壳33的电机35，所述轴套3113套设于所述电机35的输出轴351。
本实施例中，位于贯流风轮31未设有转轴3111一端的固定板311固设有轴套3113，该轴套3113套设并卡持于电机35的输出轴351。这样，电机35转动，电机35的输出轴351带动轴套3113旋转，轴套3113固设于板定板继而带动贯流风轮31转动，此时，位于另一端的转轴3111于轴承套331内转动。具体地，轴套3113可选用硅胶套，并与电机35的输出轴351采用过盈配合的方式进行连接，无需螺钉，装配简单方便。同时，零件的减少，一方面减少了部件之间的振动，另一方面减少了电机35的负荷，进而有效降低了暖风机100的噪音。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明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发明的专利保护范围内。

Claims (20)

  1. 一种贯流风轮，应用于暖风机，所述贯流风轮包括二相对设置的固定板和连接于二所述固定板之间的若干叶片，若干所述叶片沿所述固定板的外缘间隔排布，其特征在于，所述叶片沿所述贯流风轮的轴线方向呈扭转设置，所述叶片两端的相对扭转角度大于等于5°、小于等于40°。
  2. 如权利要求1所述的贯流风轮，其特征在于，所述叶片沿所述贯流风轮的轴线方向倾斜设置于二所述固定板之间，所述叶片与所述固定板之间形成夹角θ，85°≤θ≤88°。
  3. 如权利要求1所述的贯流风轮，其特征在于，所述叶片的横截面为弧形，该弧形的弦长范围为6mm~8mm。
  4. 如权利要求3所述的贯流风轮，其特征在于，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
  5. 如权利要求1所述的贯流风轮，其特征在于，所述叶片的厚度范围为0.3mm~0.5mm。
  6. 如权利要求1所述的贯流风轮，其特征在于，所述贯流风轮的外径D的范围为30mm~100mm，且/或，所述贯流风轮的长度范围为150mm~600mm。
  7. 如权利要求1所述的贯流风轮，其特征在于，所述贯流风轮的叶片数量为18片~25片。
  8. 如权利要求1所述的贯流风轮，其特征在于，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
  9. 如权利要求1所述的贯流风轮，其特征在于，所述贯流风轮包括若干第一叶片和若干第二叶片，所述第一叶片的宽度大于所述第二叶片的宽度，若干所述第一叶片和若干所述第二叶片交替设置；且/或，
    所述叶片之间的间距大小交替设置。
  10. 一种暖风机，其特征在于，所述暖风机包括壳体和设于所述壳体内的风道组件，所述风道组件包括蜗壳及如权利要求1所述的贯流风轮，所述贯流风轮装设于所述蜗壳。
  11. 如权利要求10所述的暖风机，其特征在于，所述贯流风轮的一端设有转轴，所述蜗壳设有轴承套，所述转轴容置于所述轴承套内。
  12. 如权利要求11所述的暖风机，其特征在于，所述贯流风轮未设有所述转轴的端部设有轴套，所述风道组件还包括装设于所述蜗壳的电机，所述轴套套设于所述电机的输出轴。
  13. 如权利要求10所述的暖风机，其特征在于，所述叶片沿所述贯流风轮的轴线方向倾斜设置于二所述固定板之间，所述叶片与所述固定板之间形成夹角θ，85°≤θ≤88°。
  14. 如权利要求10所述的暖风机，其特征在于，所述叶片的横截面为弧形，该弧形的弦长范围为6mm~8mm。
  15. 如权利要求14所述的暖风机，其特征在于，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
  16. 如权利要求10所述的暖风机，其特征在于，所述叶片的厚度范围为0.3mm~0.5mm。
  17. 如权利要求10所述的暖风机，其特征在于，所述贯流风轮的外径D的范围为30mm~100mm，且/或，所述贯流风轮的长度范围为150mm~600mm。
  18. 如权利要求10所述的暖风机，其特征在于，所述贯流风轮的叶片数量为18片~25片。
  19. 如权利要求10所述的暖风机，其特征在于，所述贯流风轮的轮径比d/D的范围为0.7~0.85。
  20. 如权利要求10所述的暖风机，其特征在于，所述贯流风轮包括若干第一叶片和若干第二叶片，所述第一叶片的宽度大于所述第二叶片的宽度，若干所述第一叶片和若干所述第二叶片交替设置；且/或，
    所述叶片之间的间距大小交替设置。
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CN206917925U (zh) * 2017-06-30 2018-01-23 广东美的环境电器制造有限公司 贯流风轮和暖风机
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