CN211476100U - Backward centrifugal wind wheel, air purification device and air conditioner indoor unit - Google Patents

Abstract

The utility model discloses a machine in backward centrifugal wind wheel, air purification device and air conditioning. The backward centrifugal wind wheel comprises a chassis, a wind inlet ring, a plurality of inner blades and a plurality of outer blades. Wherein the air inlet ring is arranged opposite to the chassis; the inner blades are connected with the chassis and the air inlet ring and are arranged at intervals along the circumferential position between the air inlet ring and the chassis, and an air outlet is formed between every two adjacent inner blades; the outer blades are configured on the outer peripheral wall of the air inlet ring; when the backward centrifugal wind wheel works, the flowing direction of the plurality of outer blade driving airflow is consistent with the flowing direction of the plurality of inner blade driving airflow. The utility model discloses an air purification device can reduce the wind backward that blows out to centrifugal wind wheel to increase the amount of wind to centrifugal wind wheel.

Description

Backward centrifugal wind wheel, air purification device and air conditioner indoor unit

Technical Field

The utility model relates to an air conditioner technical field, in particular to machine in to centrifugal wind wheel, air purification device and air conditioning behind.

Background

The rearward centrifugal rotor is typically used as a means of driving the airflow into motion. The backward centrifugal wind wheel comprises a chassis, an air inlet ring and a plurality of blades connected with the chassis and the air inlet ring, and air outlets are formed among the blades at intervals. When the backward centrifugal wind wheel works, air enters the inside of the backward centrifugal wind wheel from the air inlet ring along the axial direction of the air inlet ring, and then is blown out from the air outlets among the fan blades towards the side direction. However, in this process, the flow direction of the air is switched from the axial direction of the wind inlet ring to the radial direction (i.e. the lateral direction) of the backward centrifugal wind wheel, and a negative pressure zone is formed at the periphery of the wind inlet ring, so that the airflow blown out from the wind outlet in the lateral direction easily flows back to the inlet of the wind inlet ring along the periphery of the wind inlet ring, and the air volume of the backward centrifugal wind wheel is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a to centrifugal wind wheel, aim at reducing the wind backward that blows off to centrifugal wind wheel and flow back to the amount of wind of centrifugal wind wheel after the increase.

In order to achieve the above object, the utility model provides a to centrifugal wind wheel, to centrifugal wind wheel includes chassis, air inlet ring, a plurality of inner blade and a plurality of outer blade. Wherein the air inlet ring is arranged opposite to the chassis; the inner blades are connected with the chassis and the air inlet ring and are arranged at intervals along the circumferential position between the air inlet ring and the chassis, and an air outlet is formed between every two adjacent inner blades; the outer blades are configured on the outer peripheral wall of the air inlet ring; when the backward centrifugal wind wheel works, the flowing direction of the plurality of outer blade driving airflow is consistent with the flowing direction of the plurality of inner blade driving airflow.

Optionally, the air inlet circle is including being the air inlet circle body that straight tube-shape set up, and certainly the one end court of air inlet circle body the chassis is the air guide circle body that flaring shape set up, and is a plurality of outer blade structure in the periphery wall of air inlet circle body.

Optionally, one end of the inner blade is connected to the chassis, the other end of the inner blade is connected to the air guide ring body, and the plurality of blade surfaces of the inner blade are bent from inside to outside towards the same side.

Optionally, outer blade is followed the air inlet direction of air inlet circle extends, and is a plurality of the blade surface of outer blade inclines towards same direction, just the incline direction of outer blade with the crooked direction of inner blade is unanimous.

Optionally, the chassis is recessed gradually from the outer periphery thereof to the middle thereof toward the center of the air inlet ring, an air guide protrusion is formed on the inner side of the chassis, and the inner blades surround the outer periphery of the air guide protrusion.

Optionally, the number of the inner blades is not less than 4 and not more than 11; and/or the number of the outer blades is not less than 7 and not more than 30.

The utility model also provides an air purification device, air purification device includes casing and backward centrifugal wind wheel. The shell is provided with a purification air inlet and a purification air outlet, and a purification air channel is formed in the shell and used for communicating the purification air inlet with the purification air outlet; the backward centrifugal wind wheel is arranged in the purification air duct. The backward centrifugal wind wheel comprises a chassis, a wind inlet ring, a plurality of inner blades and a plurality of outer blades. Wherein the air inlet ring is arranged opposite to the chassis; the inner blades are connected with the chassis and the air inlet ring and are arranged at intervals along the circumferential position between the air inlet ring and the chassis, and an air outlet is formed between every two adjacent inner blades; the outer blades are configured on the outer peripheral wall of the air inlet ring; when the backward centrifugal wind wheel works, the flowing direction of the plurality of outer blade driving airflow is consistent with the flowing direction of the plurality of inner blade driving airflow.

Optionally, the air purification device further comprises an outer wind wheel casing mounted on the purification air duct, and the outer wind wheel casing comprises a wind collecting ring and an air outlet frame connected to the upper end of the wind collecting ring; the wind collecting device is characterized in that the rear centrifugal wind wheel is installed in the wind outlet frame, an air inlet ring of the rear centrifugal wind wheel extends into the air collecting ring, the air inlet ring and the air collecting ring are spaced to supply a channel required by rotation of the air inlet ring, and outer blades of the rear centrifugal wind wheel are located in the channel.

Optionally, the air purifying device further comprises a rotating body rotatably mounted in the purifying air duct, and the rotating body is adapted to throw water out in a radial direction thereof by rotating when the water is sprayed on the rotating body.

Optionally, when the air purification device works, the linear speed of the outer edge of the water washing piece is 10 m/s-45 m/s.

The utility model also provides an air-conditioning indoor unit, which is characterized in that the air-conditioning indoor unit comprises a casing, an air heat exchange device and an air purification device; the air purification device is arranged at the lower end of the casing, and the air heat exchange device is arranged at the upper end of the air purification device. The air purification device comprises a shell and a backward centrifugal wind wheel. The shell is provided with a purification air inlet and a purification air outlet, and a purification air channel is formed in the shell and used for communicating the purification air inlet with the purification air outlet; the backward centrifugal wind wheel is arranged in the purification air duct. The backward centrifugal wind wheel comprises a chassis, a wind inlet ring, a plurality of inner blades and a plurality of outer blades. Wherein the air inlet ring is arranged opposite to the chassis; the inner blades are connected with the chassis and the air inlet ring and are arranged at intervals along the circumferential position between the air inlet ring and the chassis, and an air outlet is formed between every two adjacent inner blades; the outer blades are configured on the outer peripheral wall of the air inlet ring; when the backward centrifugal wind wheel works, the flowing direction of the plurality of outer blade driving airflow is consistent with the flowing direction of the plurality of inner blade driving airflow.

The technical scheme of the utility model, construct a plurality of outer blades through the air inlet circle periphery wall at backward centrifugal wind wheel, the direction that this a plurality of outer blade driving air current flow flows is unanimous with a plurality of interior blade driving air current flowing to centrifugal wind wheel, in order at backward centrifugal wind wheel during operation, the air inlet circle drives a plurality of outer blades and rotates together, form in the outer loop week of air inlet circle and last the air current that flows to the air outlet outside, this part air current effectively blocks the air current that blows out from the air outlet between a plurality of interior blades and to the outer loop week reflux of air inlet circle, the loss of the amount of wind has been reduced, and then effectively increase the amount of wind of backward centrifugal wind wheel. In addition, because the air that blows out from the air outlet is difficult to follow the outer ring circumference return flow of air inlet circle to can avoid air inlet circle's outer ring circumference to produce the vortex, and then reduce the noise of backward centrifugal wind wheel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;

FIG. 2 is a schematic view of an internal structure of an embodiment of the air purification apparatus of the present invention;

FIG. 3 is a schematic view of the aft-facing centrifugal rotor of FIG. 2 mounted to a rotor outer casing;

FIG. 4 is a schematic view from another perspective of the assembled aft centrifugal rotor and rotor shroud of FIG. 3;

FIG. 5 is a cross-sectional view taken along line I-I of FIG. 4;

fig. 6 is a schematic structural view of the backward centrifugal wind wheel of the present invention;

FIG. 7 is a bottom view of the aft centrifugal rotor of FIG. 6;

FIG. 8 is a front view of the aft centrifugal rotor of FIG. 6;

FIG. 9 is a cross-sectional view taken along line II-II of FIG. 8;

fig. 10 is a comparison graph of the air volume-noise of the backward centrifugal wind wheel and the conventional backward centrifugal wind wheel of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Backward centrifugal wind wheel	311	Purifying air inlet
110	Chassis	312	Purification air outlet
				111	Air guide convex part	320	Rotating body
112	Containing groove	330	Water application member
				120	Air inlet ring	340	Water supply tank
121	Air inlet ring body	400	Indoor unit of air conditioner
				122	Wind-guiding ring body	410	Casing (CN)
130	Inner blade	500	Wind wheel outer casing
				140	Outer blade	510	Wind collecting ring
101	Air outlet	520	Air outlet frame
				300	Air purifying device	530	Channel
310	Shell body

The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly. Further, the expression "and/or" as used throughout is intended to include three juxtapositions, exemplified by "A and/or B" and including either scheme A or scheme B or schemes in which both scheme A and scheme B are satisfied.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides an embodiment of a backward centrifugal wind wheel 100, which can be applied to an electrical device requiring driving airflow to flow, such as an air purification device 300 or an air conditioner indoor unit 400. In the following embodiments, the backward centrifugal wind wheel will be described first, and the backward centrifugal wind wheel 100 will be described later in the application to the air cleaning device 300 or the indoor unit 400 of the air conditioner.

Referring to fig. 6 to 8, in an embodiment of the backward centrifugal wind wheel of the present invention, the backward centrifugal wind wheel 100 includes a base plate 110, an air inlet ring 120, and a plurality of inner blades 130. Wherein, the air inlet ring 120 is arranged opposite to the chassis 110; the inner blades 130 are connected with the base plate 110 and the air inlet ring 120, and are arranged at intervals along the circumferential position between the air inlet ring 120 and the base plate 110, and an air outlet 101 is formed between every two adjacent inner blades 130. When backward centrifugal wind rotor 100 is driven to rotate, inner blades 130 rotate accordingly, so that air is driven to enter the inside of backward centrifugal wind rotor 100 from air inlet ring 120, and then is blown out in a lateral direction from air outlet 101 between inner blades 130 (as shown in fig. 9).

In the process of the operation of the backward centrifugal wind wheel 100, the flow direction of the air needs to be switched from the axial direction of the wind inlet ring 120 to the radial direction (i.e., the lateral direction) of the backward centrifugal wind wheel 100, and the airflow blown out from the wind outlet 101 in the lateral direction easily flows back to the inlet of the wind inlet ring 120 along the outer periphery of the wind inlet ring 120. In view of this, to solve the technical problem, the backward centrifugal wind wheel 100 further includes a plurality of outer blades, the plurality of outer blades are configured on the outer circumferential wall of the air inlet ring 120, and when the backward centrifugal wind wheel 100 works, the direction in which the plurality of outer blades 140 drive the airflow to flow is the same as the direction in which the plurality of inner blades 130 drive the airflow to flow.

Referring to fig. 8 and 9, specifically, when the backward centrifugal wind wheel 100 works, the backward centrifugal wind wheel 100 drives the plurality of inner blades 130 and the outer blades 140 to rotate in the same direction, air enters the inside of the backward centrifugal wind wheel 100 from the air inlet ring 120, and is then driven by the plurality of inner blades 130 to blow out from the air outlet 101 between the plurality of inner blades 130 in a lateral direction; meanwhile, the air around the outer circumference of the air inlet ring 120 is driven by the outer blades 140 to flow upward to the outside of the air outlet 101, and the flow direction of the air flow is the same as the flow direction of the air driven by the inner blades 130. That is, air continuously flows to the outside of the outlet 101 around the outer circumference of the inlet ring 120, so that the airflow blown out from the outlet 101 among the plurality of inner blades 130 is effectively blocked from flowing back to the outer circumference of the inlet ring 120.

The technical scheme of the utility model, through a plurality of outer blades 140 of the air inlet circle 120 periphery wall structure of backward centrifugal wind wheel 100, the direction that this a plurality of outer blades 140 drive the air current flow is unanimous with the direction that a plurality of inner blades 130 of backward centrifugal wind wheel 100 drive the air current flow, in order at backward centrifugal wind wheel 100 during operation, air inlet circle 120 drives a plurality of outer blades 140 and rotates together, form in air inlet circle 120's outer loop week and last the air current that flows in the air outlet 101 outside, this part air current effectively blocks the air current that blows out from the air outlet 101 between a plurality of inner blades 130 and flows to air inlet circle 120's outer loop all around, the loss of the amount of wind has been reduced, and then effectively increase the amount of wind to centrifugal wind wheel 100.

In addition, since the air blown out from the air outlet 101 is difficult to flow back from the outer circumference of the air inlet ring 120, it is possible to prevent the outer circumference of the air inlet ring 120 from generating a vortex flow, thereby reducing the noise of the backward centrifugal wind wheel 100. As shown in fig. 9, the backward centrifugal wind wheel 100 of the present invention and the conventional backward centrifugal wind wheel 100 are tested for a plurality of times under the same condition, and the air volume-noise change contrast diagram shown in fig. 10 is obtained according to the test data. From the figure can see, under the condition of the same amount of wind, the utility model discloses a noise to centrifugal wind wheel 100 reduces about 2dB ~ 3dB to centrifugal wind wheel 100 after conventional relatively.

Referring to fig. 8 and 9, in an embodiment, the air inlet ring 120 includes an air inlet ring body 121 disposed in a straight cylinder shape, and an air guiding ring body 122 disposed in a flared shape from one end of the air inlet ring body 121 toward the chassis 110. Specifically, the air inlet ring body 121 and the air guide ring body 122 are integrally formed, and the air inlet ring body 121 and the air guide ring body 122 are in arc transition connection, so as to reduce resistance of a connection position between the air inlet ring body 121 and the air guide ring body 122 to airflow. When the backward centrifugal wind wheel 100 works, the air inlet ring body 121 gathers and sends the inlet air to the air guide ring body 122, and then the inlet air is guided by the air guide ring to radially diffuse around the air guide ring, namely the inlet air is guided to switch the flowing direction of the inlet air from the axial direction to the radial direction, so that the kinetic energy loss of the inlet air can be reduced, the wind speed is improved, and the wind volume is increased.

In theory, the outer blade 140 may be configured on the air inlet ring body 121 or the air guide ring body 122 of the air inlet ring 120. It is considered that, if wind-guiding ring body 122 is located relatively close to wind outlet 101 of backward centrifugal rotor 100, and if outer blades 140 are configured in wind-guiding ring body 122, the wind speed of the airflow driven by outer blades 140 is high, and the airflow may collide directly with the airflow blown out from wind outlet 101 and may be swirled around the outlet wind of backward centrifugal rotor 100.

In view of this, a plurality of outer blades 140 are optionally configured at the outer circumferential wall of the air intake collar body 121. The design can make a plurality of outer blades 140 have a section distance with the air outlet 101 of backward centrifugal wind wheel 100 like this, and the most wind that a plurality of outer blades 140 sent out is at the in-process through this section distance, and the wind speed is reduced slightly to diffusing into radial flowing wind all around gradually for the wind direction is unanimous slightly, and then converges with the air current that blows out from air outlet 101 smoothly, avoids two air currents to stir each other.

Referring to fig. 8 and 9, in an embodiment, the chassis 110 is gradually recessed toward the center of the air inlet ring 120 from the outer periphery thereof to the middle thereof, an air guiding protrusion 111 is formed on the inner side of the chassis 110, and a plurality of inner blades 130 surround the outer periphery of the air guiding protrusion 111.

Specifically, the air guide protrusion 111 of the chassis 110 is provided to protrude toward the center of the air inlet ring 120 in a tapered shape, and the cross-sectional area of the air guide protrusion 111 gradually decreases from the chassis 110 toward the air inlet ring 120. When the wind entering from the wind inlet ring 120 encounters the wind guiding convex part 111, the wind is guided by the wind guiding convex part 111 to flow to the peripheral wall of the wind guiding convex part along the peripheral wall thereof, and then flows to the plurality of inner blades 130, and finally is driven by the plurality of inner blades 130 to be blown out from the wind outlet 101 among the plurality of inner blades 130, so that the kinetic energy loss caused by the direct collision of the wind outlet flow and the inner wall surface of the chassis 110 is avoided.

Further, rearward centrifugal wind rotor 100 also includes a motor (not shown) adapted to drive rearward centrifugal wind rotor 100 in rotation. Optionally, the chassis 110 is formed with a receiving groove 112 at a recessed position corresponding to the wind guide protrusion 111, and the receiving groove 112 is adapted to receive a motor, so that a motor shaft of the motor is connected to the wind guide protrusion 111 to be driven to rotate toward the centrifugal wind wheel 100 by the wind guide protrusion 111.

Referring to fig. 8 and 9, in an embodiment, one end of the inner blade 130 is connected to the chassis 110, the other end of the inner blade 130 is connected to the wind-guiding ring body 122, and the blade surfaces of the inner blades 130 are curved from inside to outside toward the same side. When backward centrifugal wind wheel 100 rotates, air enters the inside of backward centrifugal wind wheel 100 from air inlet ring 120 along the axial direction, and the air flow inside backward centrifugal wind wheel 100 is extruded in a rotating manner by the inner blades 130, and is thrown out along the radial direction of the air flow inside backward centrifugal wind wheel 100 under the centrifugal acting force, so that the radial air outlet of backward centrifugal wind wheel 100 is realized.

To ensure that the plurality of outer blades 140 can flow the airflow to the outside of the outlet 101 when rotating, optionally, the outer blades 140 extend along the air inlet direction of the air inlet ring 120, the blade surfaces of the plurality of outer blades 140 are inclined toward the same direction, and the inclined direction of the outer blades 140 is consistent with the bending direction of the inner blades 130. When the backward centrifugal wind wheel 100 rotates, the plurality of inner blades 130 and the plurality of outer blades 140 are driven to rotate in the same direction, so that the air flow is driven to rotate in the same direction, and then the air flow is radially thrown out of the backward centrifugal wind wheel 100, and the blowing directions of the two air flows are consistent.

As for the number of the inner blades 130 and the number of the outer blades 140, the number may be reasonably designed according to the requirement of the air volume, and is not particularly limited. The number of inner vanes 130 may be, but is not limited to: the number of the inner blades 130 is not less than 4 and not more than 11; for example, the number of the inner blades 130 can be selected from 5, 7, 8, 9, etc. The number of outer blades 140 may be, but is not limited to: the number of the outer blades 140 is not less than 7, and not more than 30; for example, the number of the outer blades 140 can be 8, 10, 15, 20, 25, etc.

Referring to fig. 2 and 3, the present invention further provides an air purifying device 300, wherein the air purifying device 300 includes a housing 310 and a backward centrifugal wind wheel 100. Wherein, the housing 310 is configured with a purification air inlet 311 and a purification air outlet 312, the interior of the housing 310 is configured with a purification air channel, and the purification air inlet 311 and the purification air outlet 312 are communicated by the purification air channel; the backward centrifugal wind wheel 100 is installed in the purification air duct. The specific structure of the backward centrifugal wind wheel 100 refers to the above embodiments, and since the air purification device 300 adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not described in detail herein.

Referring to fig. 2 and 3, in an embodiment, the air purifying device 300 further includes a wind wheel outer casing 500 installed in the purifying air duct, and the wind wheel outer casing 500 includes a wind collecting ring 510 and an air outlet frame 520 connected to an upper end of the wind collecting ring 510; the backward centrifugal wind wheel 100 is installed in the air outlet frame 520, the wind inlet ring 120 of the backward centrifugal wind wheel 100 extends into the wind collecting ring 510, a channel 530 required for the rotation of the wind inlet ring 120 is arranged between the wind inlet ring 120 and the wind collecting ring 510 at an interval, and the outer blade 140 of the backward centrifugal wind wheel 100 is positioned in the channel 530.

Specifically, since the passage 530 required for the rotation of the wind inlet ring 120 is spaced between the wind inlet ring 120 and the wind collecting ring 510, the passage 530 is in a negative pressure region compared with the wind outlet 101 of the backward centrifugal wind wheel 100, and the air flow blown out from the wind outlet 101 of the backward centrifugal wind wheel 100 may flow back through the passage 530. Therefore, the outer blades 140 of the backward centrifugal wind wheel 100 are designed to be located in the channel 530, and when the backward centrifugal wind wheel 100 rotates, the outer blades 140 rotate to drive airflow to flow to the outside of the air outlet 101 along the channel 530, so that the airflow is blocked from flowing back from the air outlet 101 of the backward centrifugal wind wheel 100 through the channel 530, the air volume loss is reduced, and the air volume of the backward centrifugal wind wheel 100 is effectively increased.

With continued reference to fig. 2 and 3, in an embodiment, the air purifying device 300 further includes a rotating body 320 rotatably installed in the purifying air duct, the rotating body 320 is located below the backward centrifugal wind wheel 100, and the rotating body 320 is adapted to spin water out in a radial direction thereof when spraying water onto the rotating body 320.

When the air purification device 300 purifies air, the backward centrifugal wind wheel 100 drives the airflow to flow out from bottom to top in the purification air duct; meanwhile, the rotating body 320 rotates at a high speed to throw the water falling on the rotating body outwards at a high speed, the thrown water is refined into countless water drops with extremely small particle sizes, the water drops absorb impurities in the air flow and take away the impurities, and the supergravity water throwing and air purifying is realized. For example, fine particles, pollen, biological bacteria, volatile organic compounds (such as formaldehyde and benzene) in the purified air. In addition, the water drops are mixed into the air, and the effect of humidifying the air can be achieved.

In consideration of this, if the linear velocity of the outer edge of the rotating body 320 is too small during the rotation of the rotating body 320, the speed of the water thrown out by the rotating body 320 is small, and the air purification effect is poor; on the other hand, if the linear velocity of the outer edge of the rotating body 320 is too high, the energy consumption of the rotation of the rotating body 320 is high and the noise is generated, for example, if the linear velocity of the outer edge of the rotating body 320 is continuously increased, the improvement of the air purification effect is small.

Therefore, in this embodiment, when the air cleaning device 300 is required to operate, the linear velocity of the outer edge of the rotating body 320 is 10m/s to 45 m/s. Such as but not limited to: 10m/s, 15m/s, 18m/s, 20m/s, 25m/s, 30m/s, 35m/s, 38 m/s. The linear velocity of the outer edge of the rotating body 320 is limited to 10m/s to 45m/s, so that the velocity of the water thrown out by the rotating body 320 is ensured to be high, and the noise generated by the rotation of the rotating body 320 is small.

In one embodiment, the air cleaning apparatus 300 further includes a water application member 330 and a water supply tank 340. Wherein the water supply tank 340 is installed at the bottom of the case 310; the water application member 330 is constructed above and above the rotating body 320, the water application member 330 is configured to supply water to the rotating body 320, and the water application member 330 is communicated with the water supply tank 340 through a water pipe.

Referring to fig. 1 and 2, an indoor unit 400 of an air conditioner is also provided. The indoor unit 400 of the air conditioner comprises a casing 410, an air heat exchange device and an air purification device 300; wherein, the air purification device 300 is installed at the lower end of the cabinet 410, and the air heat exchange device is installed at the upper end of the air purification device 300. The specific structure of the air purification device 300 refers to the above embodiments, and since the present air-conditioning indoor unit 400 adopts all the technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and no further description is given here.

In one embodiment, the air heat exchanging device includes a housing 310, and an indoor heat exchanger and an indoor fan installed in the housing 310. The indoor fan is used for driving air to enter the heat exchange air channel from the heat exchange air inlet, and after the heat exchange air channel exchanges heat with the indoor heat exchanger, the air is driven by the indoor fan to be blown to the indoor from the heat exchange air outlet 101, so that refrigeration or heating is achieved.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (11)

1. A backward centrifugal wind wheel, comprising:

a chassis;

the air inlet ring is arranged opposite to the chassis;

the inner blades are connected with the chassis and the air inlet ring and are arranged at intervals along the circumferential position between the air inlet ring and the chassis, and an air outlet is formed between every two adjacent inner blades; and

a plurality of outer blades configured on the outer peripheral wall of the air inlet ring;

when the backward centrifugal wind wheel works, the flowing direction of the plurality of outer blade driving airflow is consistent with the flowing direction of the plurality of inner blade driving airflow.

2. The backward centrifugal wind wheel as claimed in claim 1, wherein the wind inlet ring includes a wind inlet ring body in a straight cylindrical shape, and a wind guide ring body in a flared shape from one end of the wind inlet ring body toward the base plate, and the plurality of outer blades are configured on the outer peripheral wall of the wind inlet ring body.

3. The backward centrifugal wind wheel according to claim 2, wherein one end of the inner blade is connected to the base plate, the other end of the inner blade is connected to the wind-guiding ring body, and the blade surfaces of the plurality of inner blades are curved from the inside to the outside toward the same side.

4. The backward centrifugal wind wheel according to claim 3, wherein the outer blades extend in the wind inlet direction of the wind inlet ring, the blade surfaces of the outer blades are inclined toward the same direction, and the inclined direction of the outer blades is the same as the bending direction of the inner blades.

5. The backward centrifugal wind wheel according to claim 2, wherein the base plate is gradually depressed toward the center of the wind inlet ring from the outer peripheral edge thereof toward the middle thereof, and a wind guide protrusion is formed on the inner side of the base plate, and a plurality of inner blades surround the outer periphery of the wind guide protrusion.

6. A backward centrifugal wind rotor according to claim 2, wherein the number of the inner blades is not less than 4 and not more than 11; and/or the number of the outer blades is not less than 7 and not more than 30.

7. An air purification apparatus, characterized in that the air purification apparatus comprises:

a housing configured with a purge air inlet and a purge air outlet, the housing having a purge air duct configured therein, the purge air duct communicating the purge air inlet and the purge air outlet; and

a backward centrifugal wind rotor according to any one of claims 1 to 6, installed in the clean wind duct.

8. The air purification device according to claim 7, further comprising a wind wheel outer casing installed on the purification air duct, wherein the wind wheel outer casing comprises a wind collecting ring and an air outlet frame connected to the upper end of the wind collecting ring;

the wind collecting device is characterized in that the rear centrifugal wind wheel is installed in the wind outlet frame, an air inlet ring of the rear centrifugal wind wheel extends into the air collecting ring, the air inlet ring and the air collecting ring are spaced to supply a channel required by rotation of the air inlet ring, and outer blades of the rear centrifugal wind wheel are located in the channel.

9. The air cleaning apparatus according to claim 7, further comprising a rotating body rotatably installed in the cleaning duct, the rotating body adapted to spin water out in a radial direction thereof by rotation when the water is sprayed onto the rotating body.

10. The air cleaning apparatus according to claim 9, wherein a linear velocity of an outer edge of the rotating body is 10m/s to 45m/s when the air cleaning apparatus is operated.

11. An indoor unit of an air conditioner, characterized in that the indoor unit of an air conditioner comprises a casing, an air heat exchange device and an air purification device as claimed in any one of claims 7 to 10; the air purification device is arranged at the lower end of the casing, and the air heat exchange device is arranged at the upper end of the air purification device.

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