CN116480626A - Mixed flow fan module and air treatment unit using same - Google Patents

Mixed flow fan module and air treatment unit using same Download PDF

Info

Publication number
CN116480626A
CN116480626A CN202310559806.3A CN202310559806A CN116480626A CN 116480626 A CN116480626 A CN 116480626A CN 202310559806 A CN202310559806 A CN 202310559806A CN 116480626 A CN116480626 A CN 116480626A
Authority
CN
China
Prior art keywords
mixed flow
blade
wind wheel
equal
fan module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310559806.3A
Other languages
Chinese (zh)
Inventor
陆訄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Yibisi Technology Co ltd
Original Assignee
Zhongshan Yibisi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongshan Yibisi Technology Co ltd filed Critical Zhongshan Yibisi Technology Co ltd
Priority to CN202310559806.3A priority Critical patent/CN116480626A/en
Publication of CN116480626A publication Critical patent/CN116480626A/en
Pending legal-status Critical Current

Links

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
    • F04D29/30—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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

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

Abstract

The invention discloses a mixed flow fan module and an air treatment unit using the same, wherein the mixed flow fan module comprises a motor and a mixed flow wind wheel, the motor drives the mixed flow wind wheel to rotate, the mixed flow wind wheel comprises a cover plate, a bottom plate and a plurality of blades, the blades are formed by the periphery of a blade inlet edge, a blade outlet edge, a blade top and a blade root, the projection of a space modeling curve of the blade inlet edge on an axial plane is formed by two sections of circular arcs, namely a circular arc AB and a circular arc BC respectively, and the chord AB of the circular arc AB is the hypotenuse of a right-angled triangle ADB; the chord BC of the arc BC is the hypotenuse of the right triangle BEC and forms a rectangle ODBE, and the radii of the arc AB and the arc BC are R respectively AB 、R BC The method comprises the steps of carrying out a first treatment on the surface of the The proportion relation is as follows: AO is more than or equal to 0.33 and CO is more than or equal to 3; DO is more than or equal to 0.25 and EO is more than or equal to 4; r is more than or equal to 1 AB :AO≤4；1≤R AB DO is less than or equal to 4; it greatly optimizes the state of blade air inlet flow field so as to reduce the number of bladesThe air flow impact loss of the small blade inlet achieves the effect of improving the efficiency of the wind wheel.

Description

Mixed flow fan module and air treatment unit using same
Technical field:
the invention relates to a mixed flow fan module and an air treatment unit using the same.
The background technology is as follows:
the English translation of the Air handling unit is an Air handler unit, AHU is short for AHU, and the AHU of the Air handling unit is a centralized Air handling system, and originates from a forced hot Air heating and ventilating system which is arranged in a centralized manner and distributes heated Air through an Air pipe. The device is widely used in places such as electronic instruments, precision machinery manufacturing, textile, chemical fiber, cigarettes, pharmacy, food, power stations, light chemical industry and the like, and is equipment of an industrial air conditioner.
The air handling unit mainly comprises an air filtering section (not shown), a surface cooler section 1a (provided with a cooling coil 11a and the like), a water spray chamber, an air humidifying section 3a (provided with a humidifying device) and a fan section 2a (provided with a fan 21 a), and is shown in fig. 1. The fan section is the only energy consumption part in each functional section of the air processing unit. As same as the common fans, proper fan types are selected according to the relation between the air quantity and the pressure head during ordering so as to ensure that indexes such as fan noise, efficiency and the like reach the optimal state.
In the prior art, a common fan section is formed by combining a large-volume volute, a forward multi-wing wind wheel and an inner rotor motor, wherein the fan section is used as the only energy consumption part in each functional section, and the efficiency of the fan section directly determines the energy efficiency of an Air Handling Unit (AHU). The air treatment unit has the following technical problems:
1: the existing current technology has low efficiency of the applied fans. Forward multi-wing centrifugal fans (see fig. 2) are inefficient, require high rotational speeds to have high fan static pressure efficiencies, and typically have a maximum static pressure efficiency of only about 35% -40%. Low fan efficiency makes AHU energy efficiency difficult to boost for long periods of time.
2: the prior passing unit has large outline dimension. The forward multi-wing fan can run only by being matched with the volute, the space size of the volute is large, the occupied unit space is large for ensuring the performance of the fan, and the outer size of the AHU unit is large.
In addition, the mixed flow fan is a fan between the axial flow fan and the centrifugal fan, the impeller of the mixed flow fan enables air to do centrifugal motion and also do axial motion, and the motion of air in the shell mixes two motion modes of axial flow and centrifugal motion, so that the flow field of the air inlet of the wind wheel blade of the current mixed flow fan at the inlet of the blade is not optimized enough, and the air enters from the inlet of the blade to cause larger impact on the blade, so that efficiency loss is large, and wind wheel efficiency is lower.
The invention comprises the following steps:
the invention aims to provide a mixed flow fan module, which solves the technical problems that in the prior art, the air inlet flow field of a wind wheel blade of a mixed flow fan at a blade inlet is not optimized enough, and when air enters from the blade inlet, the air causes larger impact on the blade, so that efficiency loss is large and wind wheel efficiency is low.
The invention further aims to provide an air treatment unit, which solves the technical problems of low efficiency and low energy efficiency caused by the fact that a fan section of the air treatment unit adopts a large-size volute and forward multi-wing wind wheel combination in the prior art.
The aim of the invention is achieved by the following technical scheme.
The utility model provides a mixed flow fan module, includes motor and mixed flow wind wheel, and motor drive mixed flow wind wheel rotates, the mixed flow wind wheel include apron, bottom plate and install a plurality of blades between apron and bottom plate, the blade is enclosed by blade import limit, blade export limit, blade top, blade root, the blade top is connected with the apron, the blade root is connected with the bottom plate, when the blade rotates, the air flows into the mixed flow wind wheel from blade import limit, flows out mixed flow wind wheel from blade export limit, its characterized in that: the projection of the space modeling curve of the blade inlet edge on the axial surface is composed of two sections of circular arcs, namely a circular arc AB and a circular arc BC, wherein the chord AB of the circular arc AB is the hypotenuse of the right-angled triangle ADB; the chord BC of the arc BC is the hypotenuse of the right triangle BEC and forms a rectangle ODBE, and the radii of the arc AB and the arc BC are R respectively AB 、R BC The method comprises the steps of carrying out a first treatment on the surface of the The proportion relation is as follows: AO is more than or equal to 0.33 and CO is more than or equal to 3; DO is more than or equal to 0.25 and EO is more than or equal to 4; r is more than or equal to 1 AB :AO≤4；1≤R AB DO is less than or equal to 4; the end point B of the rectangular ODBE is a plane passing through the central axis L of the mixed flow wind wheel and parallel to the inlet angle direction of the blade 2, outside the triangular AOC.
The above-mentioned AO: CO: AD: BD: BE: CE: R AB :R BC ＝133:115:85:100:48:15:400:82。
The mixed flow fan module further comprises a mounting bottom plate, the middle of the mounting bottom plate is provided with an air inlet, the periphery of the air inlet is provided with an air guide ring which protrudes upwards, the mounting bottom plate is further provided with a support, a motor is supported and mounted on the support, a mixed flow wind wheel is mounted on the motor, and the mixed flow wind wheel is located above the air inlet.
The motor is an external rotor motor.
The motor comprises a motor controller and a motor body, wherein the motor body comprises a stator assembly and a rotor assembly, and the controller comprises a box body and a control circuit board arranged in the box body.
An air handling unit comprises a shell, and a heat exchanger, a fan module and an air humidifying module which are arranged in the shell, wherein the fan module adopts the mixed flow fan module.
The heat exchanger is arranged in the bottom of the shell, the fan module is arranged in the middle of the shell, and the air humidifying module is arranged in the top of the shell.
Compared with the prior art, the invention has the following effects:
1) The projection of the space modeling curve of the blade inlet edge of the mixed flow fan module on the axial surface is composed of two sections of circular arcs, namely a circular arc AB and a circular arc BC, wherein the chord AB of the circular arc AB is the hypotenuse of a right-angled triangle ADB; the chord BC of the arc BC is the hypotenuse of the right triangle BEC and forms a rectangle ODBE, and the radii of the arc AB and the arc BC are R respectively AB 、R BC The method comprises the steps of carrying out a first treatment on the surface of the The proportion relation is as follows: AO is more than or equal to 0.33 and CO is more than or equal to 3; DO is more than or equal to 0.25 and EO is more than or equal to 4; r is more than or equal to 1 AB :AO≤4；1≤R AB DO is less than or equal to 4; the endpoint B of the rectangular ODBE is outside the triangular AOC, the time for air to enter the wind wheel can be caused to generate a specific time difference by optimizing the shape of the inlet edge of the blade, and under a target working condition, the time difference can enable the inlet edge of the blade to be more suitable for the incoming flow direction of air, so that the state of the flow field of the air inlet of the blade is greatly optimized, and further the airflow impact loss of the inlet of the blade is reduced, and the effect of improving the efficiency of the wind wheel is achieved.
2) According to the air treatment unit, the mixed flow fan module is adopted to replace a traditional multi-wing fan and volute combination scheme, and the optimized mixed flow wind wheel is used, so that the airflow flowing state in the air treatment unit is improved, the fan efficiency is greatly improved, and the unit energy efficiency is greatly optimized.
3) According to the air treatment unit, the mixed flow fan module adopts the technical scheme of the outer rotor motor and the mixed flow wind wheel, and the axial size of the mixed flow fan module is small under the performance index, so that the size of the unit is smaller, the occupied space at an application end is optimized, the transportation space is optimized, and the transportation cost is saved.
4) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
FIG. 1 is a cross-sectional view of a prior art air handling unit;
FIG. 2 is a schematic diagram of a blower used in an air handling unit of the prior art;
FIG. 3 is an angled perspective view of a mixed flow fan module according to a first embodiment of the present invention;
FIG. 4 is another perspective view of a mixed flow fan module according to a first embodiment of the present invention;
FIG. 5 is an exploded view of a mixed flow fan module according to a first embodiment of the present invention;
FIG. 6 is an angular perspective view of a mixed flow wind turbine according to a first embodiment of the present invention;
FIG. 7 is another angular perspective view of a mixed flow wind turbine according to the first embodiment of the present invention;
FIG. 8 is an exploded view of a mixed flow wind turbine of a first embodiment of the present invention;
FIG. 9 is a perspective view of a blade of a mixed flow wind turbine according to a first embodiment of the present invention;
fig. 10 is a perspective view of an outer rotor motor according to the first embodiment of the present invention;
FIG. 11 is a schematic view of a blade profile of a wind turbine blade according to an embodiment of the invention;
FIG. 12 is a schematic view of an axial plane selection of a first embodiment of the present invention;
FIG. 13 is a projection view of a blade inlet edge curve of a blade in accordance with an embodiment of the present invention;
FIG. 14 is a schematic view of an air handling unit according to a second embodiment of the present invention;
FIG. 15 is a graph illustrating performance testing of a mixed flow fan module according to the present invention.
The specific embodiment is as follows:
the invention is described in further detail below by means of specific embodiments in connection with the accompanying drawings.
Embodiment one:
as shown in fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, and fig. 13, the present embodiment provides a mixed flow fan module, which includes a motor 200 and a mixed flow wind wheel 100, the motor 200 drives the mixed flow wind wheel 100 to rotate, the mixed flow wind wheel 100 includes a cover plate 1, a bottom plate 3, and a plurality of blades 2 installed between the cover plate 1 and the bottom plate 3, the blades 2 are surrounded by a blade inlet edge 21, a blade outlet edge 22, a blade top 23, and a blade root 24, the blade top 23 is connected with the cover plate 1, the blade root 24 is connected with the bottom plate 3, when the blades 2 rotate, air flows into the mixed flow wind wheel 100 from the blade inlet edge 21, and flows out of the mixed flow wind wheel 100 from the blade outlet edge 22, and is characterized in that: the projection of the space modeling curve of the blade inlet edge 21 on the axial surface is composed of two sections of circular arcs, namely a circular arc AB and a circular arc BC, wherein the chord AB of the circular arc AB is the hypotenuse of the right triangle ADB; the chord BC of the arc BC is the hypotenuse of the right triangle BEC and forms a rectangle ODBE, and the radii of the arc AB and the arc BC are R respectively AB 、R BC The method comprises the steps of carrying out a first treatment on the surface of the The proportion relation is as follows: AO is more than or equal to 0.33 and CO is more than or equal to 3; DO is more than or equal to 0.25 and EO is more than or equal to 4; r is more than or equal to 1 AB :AO≤4；1≤R AB DO is less than or equal to 4; endpoint B of rectangular ODBE, outside triangle AOC; the axial plane is a plane passing through the central axis L of the mixed flow wind wheel 100 and parallel to the inlet angular direction of the blades 2.
For simplicity of description, the mixed flow wind wheel 100 of the present invention uses any plane perpendicular to the central axis L near the bottom of the wind wheel to intercept the wind wheel to obtain a blade section, and then in the blade section, inscribed circles of countless blade profile contour lines can be drawn, the circle center connecting line of all inscribed circles is the blade center line, the blade center line is called as She Xingxian of the blade, as shown in fig. 11, the starting point of She Xingxian of the blade has a blade inlet angle, namely the incoming flow direction of air; the end point of the vane She Xingxian has a vane exit angle, i.e., the direction of air flow. As shown in fig. 12, the axial surface is a plane passing through the central axis L of the mixed flow wind wheel 100 and parallel to the inlet angular direction of the blades 2. As shown in fig. 12, a plane passing through the central axis L of the mixed flow wind turbine 100 is an axial plane, and there are numerous axial planes. An axial plane parallel to the inlet angle direction of the blade is selected, and then the projection of the curve of the inlet edge 21 of the blade can be made. The inlet angular direction of the blades refers to the inlet direction of the wind, or the incoming direction of the air flow.
Knowledge of geometry is known: the planar geometry right triangle is defined as the only right triangle that is unique when two right sides are defined. The planar geometric arc is defined as being unique when determining the arc's two endpoints and the arc radius. As shown in FIG. 13, the blade inlet edge 21 is projectedCurve ABCIs composed of two sections of circular arcs, which are respectively circlesArc ABSum circleArc BC。
In the figure, the triangles ADB and BEC are right triangles, and the quadrangle ODBE is a rectangle.
The chord AB of the arc AB is the hypotenuse of the right triangle ADB.
The chord BC of the arc BC is the hypotenuse of the right triangle BEC.
According to the known theorem, when AD, DB, BE, EC is determined, the radii R of the arcs AB, BC AB 、R BC Respectively determining that the arc AB and the arc BC are the only one, thenCurve ABC isUnique.
Above-mentionedCurve ABCIs the preferred application effect of the current embodiment. The range of ratio relationships that achieve excellent performance is now given, with the following illustration:
0.33≤AO:CO≤3
0.25≤DO:EO≤4
1≤R AB :AO≤4
1≤R AB :DO≤4
in particular, rectangular ODBEEndpoint BShould beOutside the triangular AOC.
Preferably: AO: CO: AD: BD: BE: CE: R AB :R BC When AO selects the determined value in the actual rotor design, curve ABC also determines to achieve the best application effect of the current embodiment, =133:115:85:100:48:15:400:82.
According to the invention, by optimizing the shape of the inlet edge of the blade, the time for air to enter the wind wheel can generate a specific time difference, and under a target working condition, the time difference can enable the inlet edge of the blade to be more suitable for the incoming flow direction (namely the inlet angle direction) of the air, so that the state of the flow field of the air inlet of the blade is greatly optimized, and the air flow impact loss of the inlet of the blade is further reduced, thereby achieving the effect of improving the efficiency of the wind wheel. As shown in FIG. 15, the invention designs a brand new mixed flow fan module, and the internal flow state can be optimized by using a new design method of the mixed flow wind wheel, the efficiency is improved, and through experimental tests, the maximum fan efficiency reaches 61 percent by using the mixed flow fan module, and the energy efficiency of the mixed flow fan module is greatly optimized. Compared with the traditional forward multi-wing centrifugal fan, the efficiency of the traditional forward multi-wing centrifugal fan is low, the highest static pressure efficiency is only about 35% -40%, and compared with the traditional forward multi-wing centrifugal fan, the efficiency of the traditional forward multi-wing centrifugal fan is improved by 20% by adopting a brand new mixed flow fan module.
The mixed flow fan module further comprises a mounting bottom plate 4, the air inlet 40 is arranged in the middle of the mounting bottom plate 4, the air guide ring 41 protrudes upwards from the periphery of the air inlet 40, the mounting bottom plate 4 is further provided with a support 42, the motor 200 is supported and mounted on the support 42, the mixed flow wind wheel 100 is mounted on the motor 200, the mixed flow wind wheel 100 is located above the air inlet 40, and the mixed flow fan module is simple in structure and convenient to install.
The motor 200 is an external rotor motor, the motor 200 includes a motor controller 201 and a motor body 202, the motor body 202 includes a stator assembly and a rotor assembly, and the controller 201 includes a box body and a control circuit board installed in the box body. The motor body 202 is nested inside the mixed flow wind wheel 100, and the axial size can be reduced.
Embodiment two:
as shown in fig. 14, the present embodiment provides an air treatment unit, including a housing 300, a heat exchanger 400 installed in the housing 300, a fan module 500 and an air humidification module (not shown in the drawing), wherein the heat exchanger 400 is installed in the bottom of the housing 300, the fan module 500 is installed in the middle of the housing 300, and the air humidification module is installed in the top of the housing 300, and is characterized in that: the fan module 500 employs the mixed flow fan module described in embodiment one.
The invention designs a brand-new mixed flow fan module, the fan section is matched with other functional sections of the unit in brand-new design, the unit is small in size under the performance index, the occupied space at the application end is optimized, the transportation space is optimized, and the transportation cost is saved.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention are included in the scope of the present invention.

Claims (7)

1. The utility model provides a mixed flow fan module, includes motor (200) and mixed flow wind wheel (100), motor (200) drive mixed flow wind wheel (100) rotate, mixed flow wind wheel (100) include apron (1), bottom plate (3) and install a plurality of blades (2) between apron (1) and bottom plate (3), blade (2) are enclosed by blade inlet edge (21), blade outlet edge (22), blade top (23), blade root (24), blade top (23) are connected with apron (1), blade root (24) are connected with bottom plate (3), when blade (2) rotate, air flows into mixed flow wind wheel (100) from blade inlet edge (21), flows out mixed flow wind wheel (100) from blade outlet edge (22), its characterized in that: the projection of the space modeling curve of the blade inlet edge (21) on the axial surface is composed of two sections of circular arcs, namely a circular arc AB and a circular arc BC, wherein the chord AB of the circular arc AB is the hypotenuse of the right-angled triangle ADB; the chord BC of the arc BC is the hypotenuse of the right triangle BEC and forms a rectangle ODBE, and the radii of the arc AB and the arc BC are R respectively AB 、R BC The method comprises the steps of carrying out a first treatment on the surface of the The proportion relation is as follows: AO is more than or equal to 0.33 and CO is more than or equal to 3; DO is more than or equal to 0.25 and EO is more than or equal to 4; r is more than or equal to 1 AB :AO≤4；1≤R AB DO is less than or equal to 4; endpoint B of rectangular ODBE, outside triangle AOC;
the axial surface is a plane passing through the central axis L of the mixed flow wind wheel (100) and parallel to the inlet angle direction of the blades 2.
2. The mixed flow fan module of claim 1, wherein: AO: CO: AD: BD: BE: CE: R AB :R BC ＝133:115:85:100:48:15:400:82。
3. A mixed flow fan module according to claim 1 or 2, characterized in that: the novel combined air inlet device comprises an air inlet, and is characterized by further comprising a mounting base plate (4), wherein an air inlet (40) is arranged in the middle of the mounting base plate (4), an air guide ring (41) protrudes upwards from the periphery of the air inlet (40), a support (42) is further arranged on the mounting base plate (4), a motor (200) is supported and arranged on the support (42), a mixed flow wind wheel (100) is arranged on the motor (200), and the mixed flow wind wheel (100) is positioned above the air inlet (40).
4. A mixed flow fan module according to claim 3, wherein: the motor (200) is an external rotor motor.
5. The mixed flow fan module of claim 4, wherein: the motor (200) comprises a motor controller (201) and a motor body (202), wherein the motor body (202) comprises a stator assembly and a rotor assembly, and the controller (201) comprises a box body and a control circuit board arranged in the box body.
6. The utility model provides an air treatment unit, includes shell and installs heat exchanger, fan module and the air humidification module in the shell the inside, its characterized in that: a fan module employing the mixed flow fan module of any one of claims 1 to 5.
7. An air treatment unit according to claim 6, wherein: the heat exchanger is installed in the bottom of shell, and fan module installs in the middle part of shell the inside, and the air humidification module installs in the top of shell the inside.
CN202310559806.3A 2023-05-17 2023-05-17 Mixed flow fan module and air treatment unit using same Pending CN116480626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310559806.3A CN116480626A (en) 2023-05-17 2023-05-17 Mixed flow fan module and air treatment unit using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310559806.3A CN116480626A (en) 2023-05-17 2023-05-17 Mixed flow fan module and air treatment unit using same

Publications (1)

Publication Number Publication Date
CN116480626A true CN116480626A (en) 2023-07-25

Family

ID=87217890

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310559806.3A Pending CN116480626A (en) 2023-05-17 2023-05-17 Mixed flow fan module and air treatment unit using same

Country Status (1)

Country Link
CN (1) CN116480626A (en)

Similar Documents

Publication Publication Date Title
JP4662608B2 (en) Fan motor with integrated axial fan and motor
CN108644905B (en) Air outlet duct structure and air conditioner
JP2003328991A (en) Turbo fan and air conditioner using the same
CN211397958U (en) Air supply device
CN104329271B (en) Blower fan and the air-conditioning with which
CN114922852A (en) Mixed flow fan and ducted air conditioner
CN213808156U (en) Fan device and air condensing units
CN210371327U (en) Impeller, centrifugal fan and range hood
CN116480626A (en) Mixed flow fan module and air treatment unit using same
CN109595197A (en) A kind of blower
CN219828999U (en) Air treatment unit
CN213808155U (en) Fan device and air condensing units
CN113123977B (en) Fan, air conditioner outdoor unit and air conditioner
CN213808153U (en) Fan device and air condensing units
CN213808152U (en) Fan device and air condensing units
CN114909331A (en) Mixed flow fan assembly and air duct machine
CN112879323B (en) Air supply device
CN113074139B (en) Diffusion device, fan and dust collector
CN204327581U (en) Efficiently, low noise, extra-high specific speed motor centrifugal cutter
CN203420943U (en) Fanner for generator cooling system radiator
CN100380000C (en) Casing seat of axial-flow radiating fan
CN212431079U (en) Air duct machine
CN218913273U (en) Centrifugal fan and air conditioning system
CN113187762A (en) Direct current hemisphere formula wind wheel and fan
CN215216477U (en) Mobile air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination