CN214998332U - Axial-radial flow blower and air conditioner - Google Patents
Axial-radial flow blower and air conditioner Download PDFInfo
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- CN214998332U CN214998332U CN202120751598.3U CN202120751598U CN214998332U CN 214998332 U CN214998332 U CN 214998332U CN 202120751598 U CN202120751598 U CN 202120751598U CN 214998332 U CN214998332 U CN 214998332U
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Abstract
The utility model belongs to the technical field of the automotive technology and specifically relates to an axial flow air-blower and air conditioning equipment are related to. The axial-radial blower comprising: a motor, a centrifugal impeller and a casing; the casing comprises a front casing and a rear casing which are connected with each other; the front shell is provided with an air inlet, the rear shell is provided with an air outlet, and the gas circulation cross section of the air inlet and the gas circulation cross section of the air outlet are intersected with the axial direction of the centrifugal impeller; the procapsid with back casing sets up relatively, the procapsid with form the installation cavity between the back casing, the motor with centrifugal impeller installs in the installation cavity, the motor with centrifugal impeller transmission is connected. The utility model provides an axle radial flow air-blower is small, and pneumatic efficiency can be improved to axial air inlet axial air-out.
Description
Technical Field
The utility model belongs to the technical field of the automotive technology and specifically relates to an axial flow air-blower and air conditioning equipment are related to.
Background
The blower part of the air conditioning device of the automobile generally adopts a volute type blower, and the volute type blower comprises a shell, and an impeller, a flange plate, an end cover and a motor which are arranged in the volute type shell. The working principle of the volute type fan in the air conditioning device is that the impeller rotates at a high speed to force gas to rotate, work is applied to the gas to increase the energy of the gas, the gas is radially thrown out towards the impeller and enters the volute type shell under the action of centrifugal force, the sectional area of the volute type shell gradually increases from the direction close to an air inlet side to the direction far away from the air inlet side to reduce the speed of airflow, the kinetic energy is converted into pressure energy through the speed reduction effect, and the gas is sucked under the action of pressure difference and then is discharged from each air outlet. The cross section area of the volute casing is gradually increased from the direction close to the air inlet side to the direction far away from the air inlet side, so that the volute casing is large in size, and the volute fan is large in size, namely the blowing part in the automobile air conditioning device is large in size.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an axial flow air-blower and air conditioning equipment to solve the bulky technical problem of air-blast part among the air conditioning equipment of car to a certain extent.
The utility model provides an axial flow air-blower, include: a motor, a centrifugal impeller and a casing; the casing comprises a front casing and a rear casing which are connected with each other; the front shell is provided with an air inlet, the rear shell is provided with an air outlet, and the gas circulation cross section of the air inlet and the gas circulation cross section of the air outlet are intersected with the axial direction of the centrifugal impeller; the procapsid with back casing sets up relatively, the procapsid with form the installation cavity between the back casing, the motor with centrifugal impeller installs in the installation cavity, the motor with centrifugal impeller transmission is connected.
Furthermore, a plurality of despin blades are arranged at the air outlet, and the middle parts of the despin blades are arranged in a convex mode; the plurality of despin blades are arranged at intervals along the circumferential direction of the air outlet, and the arrangement direction of the plurality of despin blades is the same as the rotation direction of the centrifugal impeller.
Further, the inlet angle of the despinning blade is 55-67 degrees, and the outlet angle of the despinning blade is 90-93 degrees.
Further, the air outlet is the annular setting, just the air outlet sets up the edge of back casing.
Further, one end of the despin blade is fixed at a position of the rear shell close to the center of the rear shell, and the other end of the despin blade is fixed on the rear shell.
Further, the mounting cavity comprises an impeller mounting cavity and a motor mounting cavity; the rear shell comprises an outer cover body and a mounting groove arranged on the inner side of the outer cover body, the air outlet is arranged on the outer cover body, and the mounting groove forms the motor mounting cavity; the outer cover body is connected with the front shell, and an impeller mounting cavity is formed between the inner wall of the outer cover body and the inner wall of the front shell; the inner wall of the impeller installation cavity is used for forming an air flow channel with the impeller.
Further, the air flow channel comprises an arc flow guide part, the arc flow guide part is protruded towards the direction far away from the centrifugal impeller, one side of the arc flow guide part is close to the air inlet and faces the air outlet side of the centrifugal impeller, and the other side of the arc flow guide part is close to the air outlet.
Further, the arc radius of the arc flow guide part is 10mm-40 mm.
Furthermore, the edge of the air inlet is provided with a front side containing groove, the centrifugal impeller is provided with a front side connecting plate, and the front side connecting plate is inserted into the front side containing groove.
Further, the axial flow fan further comprises an intermediate cover plate; the inner side of the outer cover body is provided with a groove, the middle cover plate and the outer cover body cover the groove, a connecting hole for penetrating through the motor is formed in the middle cover plate, a rear side containing groove is formed in the edge of the connecting hole, a rear side connecting plate is arranged on the centrifugal impeller, and the rear side connecting plate is inserted into the rear side containing groove.
Further, the distance between the top end of the front side connecting plate and the bottom of the front side containing groove is 4mm-6mm, and the shortest distance between the side part of the front side connecting plate and the side part of the front side containing groove is 4mm-6 mm;
and/or the distance between the top end of the rear side connecting plate and the bottom of the rear side containing groove is 4-6 mm, and the shortest distance between the side part of the rear side connecting plate and the side part of the rear side containing groove is 4-6 mm.
The utility model provides an air conditioning device, include: the axial-radial flow blower is arranged in the machine shell.
The utility model provides an axle radial flow air-blower, include: a motor, a centrifugal impeller and a casing; the casing comprises a front casing and a rear casing which are connected with each other; the front shell is provided with an air inlet, the rear shell is provided with an air outlet, and the gas circulation cross section of the air inlet and the gas circulation cross section of the air outlet are intersected with the axial direction of the centrifugal impeller; the procapsid with back casing sets up relatively, the procapsid with form the installation cavity between the back casing, the motor with centrifugal impeller installs in the installation cavity, the motor with centrifugal impeller transmission is connected.
The utility model provides an in the axle radial flow air-blower working process, the motor rotates, it rotates to drive centrifugal impeller, form low-pressure area in the middle of the centrifugal impeller, axle radial flow air-blower outside is in the high nip, pressure differential makes in external gas gets into centrifugal impeller through the well wind gap, thereby centrifugal impeller drives gaseous blade surface motion at centrifugal impeller, gaseous along with centrifugal impeller motion and obtain a large amount of kinetic energy, finally radially throw away to the casing in by centrifugal impeller along the blade, gaseous under the blockking of the inner wall of casing, discharge by the air outlet, thereby realize axial air inlet and axial air-out, gaseous through axial and radial flow. The utility model provides an axle radial flow air-blower makes gas obtain kinetic energy through centrifugal impeller, realizes induced drafting and air exhaust, and the shell realizes changing the flow direction of gas can, therefore the shell need not to set to the structure that the section area is gradually increased by the direction of keeping away from the air inlet side by being close to the air inlet side, thereby can realize that the volume of shell is little, and then can realize that the volume of axle radial flow air-blower is small, occupation space is few, will the utility model provides an axle radial flow air-blower as the blast air part of the air conditioning equipment kind of car, then this blast air part is small, occupation space is little; additionally the utility model provides an axial air inlet and axial air-out can be realized to the axial radial flow air-blower, compare in the axial air inlet, radial air-out, the utility model provides an axial radial flow air-blower can improve pneumatic efficiency.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an axial-radial flow blower according to an embodiment of the present invention;
FIG. 2 is another schematic view of the axial-radial blower of FIG. 1;
FIG. 3 is a schematic structural view of a housing in the axial-radial blower of FIG. 1;
FIG. 4 is a schematic structural view of a front housing in the chassis shown in FIG. 3;
FIG. 5 is a first perspective view of the rear housing of the enclosure shown in FIG. 3;
FIG. 6 is a second perspective structural view of the rear housing of the enclosure shown in FIG. 3;
FIG. 7 is a schematic structural diagram of an intermediate cover plate in the enclosure shown in FIG. 3;
FIG. 8 is a schematic gas flow diagram of the axial-radial blower of FIG. 1;
FIG. 9 is a schematic view of a centrifugal impeller of the axial-radial blower of FIG. 1;
FIG. 10 is a cut-away view of the centrifugal impeller shown in FIG. 9;
FIG. 11 is a schematic view of another perspective of the centrifugal impeller shown in FIG. 9;
FIG. 12 is a schematic view of the blades of the centrifugal impeller of FIG. 9;
fig. 13 is another perspective view of the blades of the centrifugal impeller shown in fig. 9.
Reference numerals: 10-a housing; 20-a centrifugal impeller; 30-a motor; 40-wind flow channel; 11-a front housing; 12-a rear housing; 13-air inlet; 14-air outlet; 15-descaled leaf; 16-an intermediate cover plate; 41-arc flow guide part; 111-front side containment slots; 121-outer cover body; 122-motor mounting chamber; 161-rear containment tank; 21-a front side connection plate; 22-a rear side connection plate; 23-a cover plate; 24-a blade; 25-a hub; 26-shaft hole; 241-forward swept portion; 242-blade tip; 243-blade root.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that, in the embodiment of the present invention, "front" refers to the upstream of the wind from the wind inlet 13 to the wind outlet 14 in the overall direction, and "rear" refers to the downstream of the wind from the wind inlet 13 to the wind outlet 14 in the overall direction.
As shown in fig. 1 to 7, the utility model provides an axial flow blower, include: a motor 30, a centrifugal impeller 20 and a casing 10; the cabinet 10 includes a front case 11 and a rear case 12 connected to each other; an air inlet 13 is arranged on the front shell 11, an air outlet 14 is arranged on the rear shell 12, and the air circulation cross section of the air inlet and the air circulation cross section of the air outlet are intersected with the axial direction of the centrifugal impeller; the front housing 11 and the rear housing 12 are oppositely arranged, a mounting cavity is formed between the front housing 11 and the rear housing 12, the motor 30 and the centrifugal impeller 20 are mounted in the mounting cavity, and the motor 30 is in transmission connection with the centrifugal impeller 20.
In the working process of the axial-radial flow blower provided by the embodiment, the motor 30 rotates to drive the centrifugal impeller 20 to rotate, a low-pressure area is formed in the middle of the centrifugal impeller 20, the outside of the axial-radial flow blower is positioned in a high-pressure area, and the pressure difference enables outside air to enter the centrifugal impeller through the air inlet, so that the centrifugal impeller drives the air to move on the surface of the blade of the centrifugal impeller, the air moves along with the centrifugal impeller and obtains a large amount of kinetic energy, and finally is radially thrown out to the shell 10 along the blade, and the air is blocked by the inner wall of the shell 10 and discharged from the air outlet 14, so that axial air inlet and axial air outlet are realized, and the air flows axially and radially. The axial-radial flow blower provided by the embodiment enables gas to obtain kinetic energy through the centrifugal impeller 20, so that air suction and air exhaust are realized, and the flowing direction of the gas can be changed through the casing 10, so that the casing 10 does not need to be set into a structure in which the section area is gradually increased from the direction close to the air inlet side to the direction far away from the air inlet side, so that the casing 10 is small in size, and further the axial-radial flow blower is small in size and small in occupied space; in addition, the axial-radial flow blower provided by the embodiment can realize axial air inlet and axial air outlet, and compared with axial air inlet and radial air outlet, the axial-radial flow blower provided by the embodiment can improve pneumatic efficiency.
Specifically, the gas flow cross section of the air inlet and the gas flow cross section of the air outlet are both arranged in a crossed manner with the axial direction of the centrifugal impeller, and may be: the opening direction of the air inlet is parallel to or coincided with the axis of the centrifugal impeller 20, and the opening direction of the air outlet 14 can be parallel to or coincided with the axis of the centrifugal impeller 20, so that the axial-radial-flow air blower can better axially intake air and axially exhaust air.
As shown in fig. 5, a plurality of despin blades 15 are disposed at the air outlet 14, and the middle portions of the despin blades 15 are disposed in a convex manner (that is, the middle portions of the despin blades are disposed in a convex manner compared with the end portions of the despin blades); the plurality of despin blades 15 are arranged at intervals along the circumferential direction of the air outlet 14, and the arrangement direction of the plurality of despin blades 15 is the same as the rotation direction of the centrifugal impeller 20, it can be understood that when the rotation direction of the centrifugal impeller 20 is clockwise, the plurality of despin blades 15 are arranged at intervals along the clockwise direction (the middle parts of the plurality of despin blades 15 are all convex towards the counterclockwise direction), and when the rotation direction of the centrifugal impeller 20 is counterclockwise, the plurality of despin blades 15 are arranged at intervals along the counterclockwise direction (the middle parts of the plurality of despin blades 15 are all convex towards the clockwise direction).
In this embodiment, a plurality of despinning blades 15 are arranged at the air outlet 14, and the arrangement direction of the plurality of despinning blades 15 is the same as the rotation direction of the centrifugal impeller 20, so that on one hand, the air is guided to reduce the rotation speed, the energy loss is reduced, and on the other hand, the air can flow more uniformly, thereby improving the pneumatic efficiency and increasing the air outlet uniformity of the air. As shown in fig. 8, for the effect schematic diagram that the axial-radial flow blower that provides carries out the simulation to this embodiment, can see that, the gas that is got rid of to the edge by centrifugal impeller can flow to the middle part of axial-radial flow blower under the effect of despinning blade, and despinning blade can avoid gas to scatter in disorder at the edge of air outlet with the wind direction middle part guide of edge to improve pneumatic efficiency and improve the air-out homogeneity.
Wherein the despin blade 15 may include sequentially connected blade segments, a corner is formed between two adjacent blade segments, and a plurality of blade segments are sequentially connected to form the arched despin blade 15.
As an alternative, as shown in fig. 5, the despin blades 15 are arranged in an arc shape, that is, the surface of the despin blade 15 is smooth and has no corner and is streamline, and the fluid resistance of the despin blade 15 is small, which is more beneficial to guiding wind, reducing the rotating speed, reducing the energy loss, and enabling the wind to flow more uniformly.
The number of the despun blades 15 can be set according to specific needs, for example, the number of the despun blades 15 is 9-27 (for example, 9, 10, 13, 16, 18, 20, 22, 25 or 27, etc.) pieces.
As shown in fig. 5, based on the above embodiment, further, the inlet angle β of the despinner blade 15 is 55 ° to 67 ° (e.g., 55 °, 57 °, 60 °, 61 °, 63 °, 65 °, or 67 °, etc.), the outlet angle θ of the despinner blade 15 is 90 ° to 93 ° (e.g., 90 °, 90.5 °, 91 °, 91.5 °, 92 °, 92.5 °, or 93 °, etc.), the inlet angle β of the despinner blade 15 is 55 ° to 67 °, and the outlet angle θ is 90 ° to 93 °, which is more beneficial to improving the start efficiency and improving the outlet uniformity of the gas.
As shown in fig. 6, based on the above embodiment, further, the air outlet 14 is disposed in a ring shape, and the air outlet 14 is disposed at an edge of the rear housing 12. In this embodiment, the air outlet 14 is disposed at the edge of the rear housing 12, and can be disposed closer to the peripheral side of the centrifugal impeller 20, so that the air outlet efficiency can be improved.
One end of the despin blade 15 can be fixed at one side of the air outlet 14, and the other end of the despin blade 15 is fixed at the other side of the air outlet 14.
Alternatively, as shown in fig. 5, based on the above embodiment, further, one end of the despin blade 15 is fixed to the rear housing 12 near the center of the rear housing 12, and the other end of the despin blade 15 passes over the air outlet 14 to be fixed to the rear housing 12. The fixing mode of the despin blades 15 in the embodiment is convenient for the integral forming arrangement of the rear shell 12, thereby improving the production efficiency.
As shown in fig. 1 and 2, in particular, the mounting cavity includes an impeller mounting cavity and a motor mounting cavity 122; the rear housing 12 includes an outer cover 121 and a mounting groove disposed on the inner side of the outer cover 121, the air outlet 14 is disposed on the outer cover 121, and the mounting groove forms the motor mounting cavity 122; the outer cover 121 is connected with the front housing 11, and an impeller installation cavity is formed between the inner wall of the outer cover 121 and the inner wall of the front housing 11; the inner wall of the impeller installation cavity is used for forming an air flow passage 40 with the impeller.
Wherein, the wind channel 40 includes circular arc water conservancy diversion portion 41, circular arc water conservancy diversion portion 41 is protruding to keeping away from centrifugal impeller 20's direction, one side of circular arc water conservancy diversion portion 41 is close to air intake 13 and towards centrifugal impeller 20's air-out side sets up, the opposite side of circular arc water conservancy diversion portion 41 is close to air outlet 14 sets up.
In this embodiment, the arc guiding portion 41 surrounds the side portion of the centrifugal impeller 20, the middle portion of the arc guiding portion 41 is far away from the centrifugal impeller 20, and the two sides of the arc guiding portion 41 are close to the centrifugal impeller 20, so that the air duct 40 is disposed at the side portion of the centrifugal impeller 20 in a turning manner, thereby forming a labyrinth structure, when the air is radially thrown out from the centrifugal impeller 20, the air reaches one side of the arc guiding portion 41 (the side is disposed opposite to the air outlet side of the centrifugal impeller 20), and the side portion of the arc guiding portion 41 guides the air to the other side of the arc guiding portion 41, and then guides the air to the air outlet 14; the labyrinth structure formed by the arc guide part 41 can avoid gas backflow, so that the air outlet efficiency is improved.
Because the two sides of the circular arc runner part are close to the centrifugal impeller 20 than the middle part thereof, in order to enable the motor 30 and the centrifugal impeller to be assembled in the installation cavity of the casing 10, at least the inner wall part of the front casing 11 close to the rear casing 12 is arc-shaped, and the inner wall part of the front casing 11 forms one half of the circular arc flow guide part 41, similarly, the inner wall part of the rear casing 12 close to the front casing 11 is arc-shaped, and the inner wall part of the rear casing forms one half of the circular arc flow guide part 41, and after the front casing 11 and the rear casing 12 are connected, the inner wall part of the front casing 11 close to the rear casing 12 and the inner wall part of the rear casing 12 close to the front casing 11 are spliced to form the circular arc flow guide part 41.
The radius of the circular arc guiding part 41 can be set according to specific conditions. Optionally, the arc radius of the arc guiding portion 41 is 10mm-40mm, for example: 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, or the like.
As shown in fig. 2, based on the above embodiment, further, a front-side containing groove 111 is provided at an edge of the air inlet 13, a front-side connecting plate 21 is provided on the centrifugal impeller 20, and the front-side connecting plate 21 is inserted into the front-side containing groove 111. In this embodiment, the air inlet side of the centrifugal impeller 20 extends out of the air inlet 13 of the front housing 11, and the front side connection plugboard is inserted into the front side containing groove 111, so that the sealing performance between the centrifugal impeller 20 and the front housing 11 is improved, the gas leakage is reduced, and the air outlet efficiency of the gas is improved.
The cross-sectional shape of the front-side containing groove 111 may be V-shaped or W-shaped, and the cross-sectional shape of the optional front-side containing groove 111 is U-shaped, so that the structure is simple, and the processing and manufacturing are easy.
Optionally, the distance h1 between the top end of the front connecting plate 21 and the bottom of the front accommodating groove 111 is 4mm-6mm (e.g., 4mm, 4.5mm, 5mm, 5.5mm, or 6mm), and the shortest distance h2 between the side of the front connecting plate 21 and the side of the front accommodating groove 111 is 4mm-6mm (e.g., 4mm, 4.3mm, 4.6mm, 5mm, 5.4mm, 5.8mm, or 6mm), so that on one hand, a better sealing effect can be achieved, and on the other hand, the front accommodating groove 111 can be prevented from being too large in volume.
As shown in fig. 2, based on the above embodiment, further, the axial flow blower further includes an intermediate cover plate 16; the inner side of the outer cover 121 is provided with a groove (which can play a role of reducing weight and is convenient for forming the rear housing 12), the middle cover plate 16 is connected with the outer cover 121 (for example, by welding, viscose connection, interference connection or welding) to cover the groove (so as to prevent air from being retained in the groove and affecting air outlet), the middle cover plate 16 is provided with a connecting hole for passing through the motor 30, the edge of the connecting hole is provided with a rear-side containing groove 161, the centrifugal impeller 20 is provided with a rear-side connecting plate 22, and the rear-side connecting plate 22 is inserted into the rear-side containing groove 161.
In this embodiment, the rear connection insertion plate is inserted into the rear accommodation groove 161, so that the sealing performance between the centrifugal impeller 20 and the middle cover plate 16 is improved, and gas leakage is reduced, thereby further improving the air outlet efficiency of gas.
The cross-sectional shape of the rear-side containing groove 161 may be V-shaped or W-shaped, and the cross-sectional shape of the optional rear-side containing groove 161 is U-shaped, so that the structure is simple, and the processing and manufacturing are easy.
Optionally, the distance h1 between the top end of the rear connecting plate 22 and the bottom of the rear accommodating groove 161 is 4mm-6mm (e.g., 4mm, 4.5mm, 5mm, 5.5mm, or 6mm), and the shortest distance h2 between the side of the rear connecting plate 22 and the side of the rear accommodating groove 161 is 4mm-6mm (e.g., 4mm, 4.3mm, 4.6mm, 5mm, 5.4mm, 5.8mm, or 6 mm).
As shown in fig. 9 to 13, the centrifugal impeller includes a cover plate 23, blades 24 and a hub 25 fixedly connected in sequence, the blades 24 are located between the cover plate 23 and the hub 25 in the axial direction of the hub 25, the cover plate is provided with an opening for air circulation, a front connecting plate is arranged at the edge of the opening, and a rear connecting plate is arranged at one side of the hub far from the cover plate; the blades 24 are backward curved blades, and the blades 24 have a forward sweep. A shaft hole 26 for connecting a drive shaft is formed in the hub.
In the embodiment, the centrifugal impeller adopts the backward-bent blades twisted in space, after accelerated air enters the impeller, the attachment degree of the accelerated air and the blades 24 is higher, and the energy added to the air flow in the centrifugal impeller is mainly changed into pressure energy, so that the requirement of high efficiency is ensured; the forward swept portion 241 of the blades 24 at the inlet helps to reduce aerodynamic noise generated after the airflow strikes the centrifugal impeller.
Optionally, the centrifugal impeller is an axial-radial flow type closed centrifugal impeller which guides the airflow to enter axially and flow out radially.
Optionally, the forward sweep inclination angle of the forward sweep portion 241 is γ, and 81 ° ≦ γ ≦ 86 °.
Alternatively, the forward sweep inclination of the forward sweep portion 241 is γ, and γ is 83 °.
Alternatively, the blades 24 have a blade exit angle α, and 60 ≦ β ≦ 70.
Optionally, the blade 24 has a blade exit angle α, and α is 65 °.
The blade has a tip 242 and a root 243, optionally the root 243 of said blade 24 at the inlet has a radius RhThe radius of the blade tip 242 at the inlet is RsAnd R is 0.35. ltoreq. Rh/RsLess than or equal to 0.4. The inlet in this embodiment refers to the inlet of the centrifugal impeller.
Optionally, the root 243 of the blade 24 at the inlet has a radius RhThe radius of the blade tip 242 at the inlet is RsAnd R ish/Rs＝0.37。
Optionally, an included angle between a tangential direction of a blade tip profile of the blade 24 at the inlet and a rotation direction of the centrifugal impeller at the blade tip is α1And alpha is not more than 56 degrees1≤64°。
Optionally, an included angle between a tangential direction of a blade tip profile of the blade 24 at the inlet and a rotation direction of the centrifugal impeller at the blade tip is α1And α is1＝62°。
Optionally, the centrifugal impeller outlet width of the centrifugal impeller is b2, and b2 is calculated by the formula (1), wherein the formula (1) is:
b2＝Q/(2π×R2×φ×u2) (1)；
wherein R is2Is the centrifugal impeller exit radius of the centrifugal impeller; u. of2Is the peripheral speed and phi is the flow coefficient at the outlet of the centrifugal impeller.
Alternatively, u2The calculation is carried out by the formula (2), wherein the formula (2) is as follows:
u2＝2πR2n (2)；
wherein n is the rotational speed of the centrifugal impeller.
Alternatively, 90mm ≦ R2Not more than 110mm and not more than 0.2 and not more than 0.3.
Optionally, the blades 24 at the inlet of the centrifugal impeller have a thickness δ1，0.8mm≤δ1≤1.5mm。
Optionally, the blades 24 at the inlet of the centrifugal impeller have a thickness δ1And δ1＝1.1mm。
Optionally, the thickness δ of the blades 24 at the outlet of the centrifugal impeller2And 1.3mm is not more than delta2≤2.5mm。
Optionally, the thickness δ of the blades 24 at the outlet of the centrifugal impeller2And δ2＝1.9mm。
Optionally, the number of the blades 24 is 19 or 23; the root radius of the blade 24 at the inlet is 28.8 mm; the tip radius of the inlet blade 24 is 72 mm; the blade angle at the tip of the blade 24 at the inlet is 62 degrees, and the blade angle at the root of the blade 24 at the inlet is 37 degrees; the width of the outlet of the centrifugal impeller is 25mm, the blade angle of the outlet of the centrifugal impeller is 65 degrees, and the radius of the outlet of the centrifugal impeller is 92.1 mm; the axial length of the centrifugal impeller is 40.2 mm.
The embodiment of the utility model provides a can reach the target amount of wind that needs through less centrifugal impeller axial dimensions, simultaneously under the operating condition, it is more stable to have guaranteed the flow field in the centrifugal impeller, has improved the holistic efficiency of vehicle air conditioner air-blower, has reduced the noise of vehicle air conditioner assembly.
The specific principle is as follows:
the sweepforward blade structure ensures that the air flow enters the centrifugal impeller more uniformly and stably before the incoming air enters the centrifugal impeller; because the blades are backward bent blades with twisted space, the air flow in the flow channel of the centrifugal impeller is enabled to be attached to the blades; when the airflow flows to the outlet of the centrifugal impeller, the stability of the flow field at the outlet of the centrifugal impeller is improved due to the backward bending structure of the blades. And the turning loss of the air flow in the backward-bent centrifugal impeller is relatively small, and the efficiency of the whole centrifugal impeller is improved.
It should be noted that, in order to realize the normal operation of the axial-radial blower, the axial-radial blower may further include a PCB board.
The embodiment of the utility model provides an air conditioning device is still provided, including casing 10 and axle radial flow air-blower, the axle radial flow air-blower sets up in casing 10. The air conditioning device provided by the embodiment has a compact structure and a small volume; the air conditioner can realize larger air quantity and better NVH level than the traditional air conditioner.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
Claims (12)
1. An axial flow blower, comprising: a motor, a centrifugal impeller and a casing; the casing comprises a front casing and a rear casing which are connected with each other; the front shell is provided with an air inlet, the rear shell is provided with an air outlet, and the gas circulation cross section of the air inlet and the gas circulation cross section of the air outlet are intersected with the axial direction of the centrifugal impeller; the procapsid with back casing sets up relatively, the procapsid with form the installation cavity between the back casing, the motor with centrifugal impeller installs in the installation cavity, the motor with centrifugal impeller transmission is connected.
2. The axial-radial flow blower according to claim 1, wherein a plurality of despin blades are arranged at the air outlet, and the middle parts of the despin blades are arranged in a convex manner; the plurality of despin blades are arranged at intervals along the circumferential direction of the air outlet, and the arrangement direction of the plurality of despin blades is the same as the rotation direction of the centrifugal impeller.
3. The axial-radial blower of claim 2, wherein the inlet angle of the deswirler vanes is 55 ° to 67 ° and the outlet angle of the deswirler vanes is 90 ° to 93 °.
4. The axial-radial flow blower of claim 2, wherein the air outlet is annularly disposed, and the air outlet is disposed at an edge of the rear housing.
5. The axial-radial blower of claim 4, wherein one end of said despin blades is fixed to said rear housing at a position near the center of said rear housing, and the other end of said despin blades is fixed to said rear housing.
6. The axial-radial blower of any one of claims 1-5, wherein the mounting cavity comprises an impeller mounting cavity and a motor mounting cavity; the rear shell comprises an outer cover body and a mounting groove arranged on the inner side of the outer cover body, the air outlet is arranged on the outer cover body, and the mounting groove forms the motor mounting cavity; the outer cover body is connected with the front shell, and an impeller mounting cavity is formed between the inner wall of the outer cover body and the inner wall of the front shell; the inner wall of the impeller installation cavity is used for forming an air flow channel with the impeller.
7. The axial-radial flow blower according to claim 6, wherein the air flow passage includes an arc flow guiding portion protruding in a direction away from the centrifugal impeller, one side of the arc flow guiding portion is disposed near the air inlet and facing an air outlet side of the centrifugal impeller, and the other side of the arc flow guiding portion is disposed near the air outlet.
8. The axial-radial flow blower of claim 7, wherein the circular arc radius of the circular arc flow guide portion is 10mm-40 mm.
9. The axial-radial flow blower according to claim 6, wherein the edge of the air inlet is provided with a front-side containing groove, the centrifugal impeller is provided with a front-side connecting plate, and the front-side connecting plate is inserted into the front-side containing groove.
10. The axial-flow blower of claim 9, further comprising an intermediate cover plate; the inner side of the outer cover body is provided with a groove, the middle cover plate and the outer cover body cover the groove, a connecting hole for penetrating through the motor is formed in the middle cover plate, a rear side containing groove is formed in the edge of the connecting hole, a rear side connecting plate is arranged on the centrifugal impeller, and the rear side connecting plate is inserted into the rear side containing groove.
11. The axial-radial flow blower of claim 10, wherein the distance between the top end of the front connecting plate and the bottom of the front containing groove is 4mm-6mm, and the shortest distance between the side of the front connecting plate and the side of the front containing groove is 4mm-6 mm;
and/or the distance between the top end of the rear side connecting plate and the bottom of the rear side containing groove is 4-6 mm, and the shortest distance between the side part of the rear side connecting plate and the side part of the rear side containing groove is 4-6 mm.
12. An air conditioning apparatus, comprising: a casing and an axial-radial blower according to any one of claims 1-11, the axial-radial blower being arranged within the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120751598.3U CN214998332U (en) | 2021-04-13 | 2021-04-13 | Axial-radial flow blower and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120751598.3U CN214998332U (en) | 2021-04-13 | 2021-04-13 | Axial-radial flow blower and air conditioner |
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| CN214998332U true CN214998332U (en) | 2021-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022217957A1 (en) * | 2021-04-13 | 2022-10-20 | 浙江银轮机械股份有限公司 | Axial radial flow blower and air conditioning device |
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2021
- 2021-04-13 CN CN202120751598.3U patent/CN214998332U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022217957A1 (en) * | 2021-04-13 | 2022-10-20 | 浙江银轮机械股份有限公司 | Axial radial flow blower and air conditioning device |
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