CN210373761U

CN210373761U - Air purification module, air conditioner indoor unit and air conditioner

Info

Publication number: CN210373761U
Application number: CN201921373958.XU
Authority: CN
Inventors: 黄愉太; 蔡序杰
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-04-21
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses an air purification module, an air conditioner indoor unit and an air conditioner, wherein, the air purification module comprises a shell, a rotator and a backward centrifugal wind wheel, the shell is provided with an air inlet, an air outlet and a purification air channel for communicating the air inlet and the air outlet; a rotating body rotatably disposed within the housing, the rotating body adapted to rotate to throw water outwardly when the water is sprayed onto the rotating body; the backward centrifugal wind wheel is arranged in the purification air channel and used for driving airflow to flow into the purification air channel from the air inlet and flow out of the air outlet, the backward centrifugal wind wheel comprises a chassis, an induced air ring and a plurality of blades arranged between the chassis and the induced air ring in the same direction, and the blades are ternary twisted blades. The utility model discloses the air purification module can great promotion amount of wind, and has reduced the complete machine noise.

Description

Air purification module, air conditioner indoor unit and air conditioner

Technical Field

The utility model relates to an air conditioning technology field, in particular to machine and air conditioner in air purification module, air conditioning.

Background

Along with the concern of users to the indoor health problem, the air conditioner health is the primary concern of users, the air inlet of the existing air conditioner is generally provided with a filter screen which can filter impurities such as dust, particles and the like, but the filtered air is not fresh, and the feeling of freshness and micro-wetness of people in nature is not achieved.

The air purification module capable of centrifugally throwing water is formed by the pipe body or the spray head and the rotating body, so that water drops moving at high speed are combined with particles or soluble matters in the air, the air is purified, and the requirements of freshness and micro-wetting are met. This air purification module adopts backward centrifugal wind wheel can improve the amount of wind, and current backward centrifugal fan blade, its blade form are mainly for the uniform cross-section, and this is simple to the mould that appears of technology preparation, and consequently the rate of utilization is also high, but its fan performance is relatively poor, so there are the air output shortcoming such as not enough, the noise is big.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing an air purification module, aim at solving the above-mentioned one or more technical problem that proposes.

In order to achieve the purpose, the air purification module provided by the utility model comprises a shell, a rotating body and a backward centrifugal wind wheel;

the shell is provided with an air inlet, an air outlet and a purification air channel for communicating the air inlet and the air outlet;

a rotatable body rotatably disposed within the housing, the rotatable body adapted to be rotated to throw water outwardly when the water is sprayed onto the rotatable body;

the backward centrifugal wind wheel is arranged at the air outlet and used for driving airflow to flow into the purification air channel from the air inlet and flow out from the air outlet, and comprises a chassis, an air guide ring and a plurality of blades which are arranged in the same direction on the chassis and between the air guide rings, wherein the blades are ternary twisted blades.

In one embodiment, the intersection point of the front edge of the blade and the upper edge of the blade is defined as a front upper endpoint, the intersection point of the front edge of the blade and the lower edge of the blade is defined as a front lower endpoint, the intersection point of the rear edge of the blade and the upper edge of the blade is defined as a rear upper endpoint, and the intersection point of the rear edge of the blade and the lower edge of the blade is defined as a rear lower endpoint;

the front upper end point and the rear upper end point are distributed on two sides of a connecting line of the front lower end point and the rear lower end point.

In an embodiment, the distance from the upper front end point to the axis of the aft centrifugal rotor is S1, and the distance from the lower front end point to the axis of the aft centrifugal rotor is S2, wherein S1> S2.

In one embodiment, the rear lower end point is located forward of the rear upper end point in a direction of rotation of the blade.

In one embodiment, the forward lower end point is located forward of the forward upper end point in a direction of rotation of the blade.

In one embodiment, the blade comprises a first connecting section connected with the induced air ring and a second connecting section connected with the chassis, and the blade thickness of the first connecting section is larger than that of the second connecting section.

In one embodiment, the number of blades is greater than or equal to 5 and less than or equal to 11.

In one embodiment, the base plate is arranged in an arc shape, and the base plate is arranged gradually from top to bottom.

In one embodiment, a wind wheel air inlet is formed in the middle of the wind inducing ring, a wind wheel air outlet is defined between the rear edges of two adjacent blades, and an airflow channel for communicating the wind wheel air inlet and the wind wheel air outlet is defined between the wind inducing ring and the chassis; the upper edge of the blade is connected with the induced draft ring, and the lower edge of the blade is connected with the chassis.

In one embodiment, the air purification module further comprises a water supply assembly including a water tank and a spray head for spraying water in the water tank onto the rotary body.

In an embodiment, the air purification module further comprises a driving device, and an output shaft of the driving device is connected with the rotating body to drive the rotating body to rotate.

In one embodiment, the peripheral linear velocity of the rotating body is greater than or equal to 10m/s and less than or equal to 45 m/s.

The utility model also provides an air-conditioning indoor unit, including casing and air purification module, the casing is equipped with heat transfer air intake, heat transfer air outlet, purification air intake and purification air outlet, the heat transfer air intake with the heat transfer air outlet intercommunication, the purification air intake with the purification air outlet intercommunication; the air purification module comprises a shell, a rotating body and a backward centrifugal wind wheel;

the backward centrifugal wind wheel is arranged at the air outlet and used for driving airflow to flow into the purification air channel from the air inlet and flow out from the air outlet, and comprises a chassis, an air guide ring and a plurality of blades which are arranged between the chassis and the air guide ring in the same direction, wherein the blades are ternary twisted blades;

the air purification module is located in the casing, the air inlet of the casing of the air purification module is communicated with the purification air inlet, and the air outlet of the casing of the air purification module is communicated with the purification air outlet.

The utility model also provides an air conditioner, include the indoor set of air conditioner and the outdoor unit of air conditioner that are connected through the refrigerant pipe, the indoor set of air conditioner includes casing and air purification module, the casing is equipped with heat transfer air intake, heat transfer air outlet, purification air intake and purification air outlet, the heat transfer air intake with the heat transfer air outlet intercommunication, the purification air intake with the purification air outlet intercommunication; the air purification module comprises a shell, a rotating body and a backward centrifugal wind wheel;

The utility model discloses air purification module is through making the rotatable setting of rotator in purifying the wind channel, then when the rotator is rotatory, gaseous pollutants such as particulate matter and formaldehyde in the air of rotator of flowing through can effectively be caught and filtered to a large amount of small water droplets of outwards throwing away, improves purifying effect. Meanwhile, the backward centrifugal wind wheel is used for driving airflow to flow into the purification air channel from the air inlet and flow out from the air outlet, so that the blades of the backward centrifugal wind wheel are ternary twisted blades. Then compare in the backward centrifugal blade of uniform cross-section, its amount of wind is bigger, the noise is littleer, and then great promotion air purification module's the amount of wind, reduction complete machine noise.

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 diagram of an embodiment of an air purification module of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a backward centrifugal wind wheel of the air purification module of FIG. 1;

FIG. 3 is a schematic top view of the aft centrifugal wind rotor of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line I-I of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic view of a portion of the aft centrifugal rotor of FIG. 3;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

FIG. 8 is a schematic view of a portion of the aft centrifugal rotor of FIG. 2;

FIG. 9 is a graph of the air volume and noise of the air purification module of FIG. 1;

fig. 10 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Air purification module	331	Leading edge	34	Wind wheel air inlet
1	Shell body	332	Upper edge of the container	35	Wind wheel air outlet
						11	Air inlet	333	Lower edge	36	Air flow channel
12	Air outlet	334	Trailing edge	4	Water tank
						13	Purifying air duct	335	First connecting section	5	Spray head
2	Rotating body	336	Second connecting section	200	Casing (CN)
						3	Backward centrifugal wind wheel	33a	Front upper endpoint	210	Heat exchange air inlet
31	Chassis	33b	Front lower endpoint	220	Heat exchange air outlet
						32	Wind-guiding ring	33c	Rear upper end point	230	Purifying air inlet
33	Blade	33d	Rear lower end point	240	Purification air outlet

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

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.

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 meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides an air purification module mainly is applied to in the air conditioner to improve the quality of air, but not limited to this. The air conditioner refers to a device that can adjust the temperature of air, and includes a floor type air conditioner, a wall type air conditioner, and the like.

In the embodiment of the present invention, as shown in fig. 1 to 8, the air purification module 100 includes a housing 1, a rotator 2 and a backward centrifugal wind wheel 3. The housing 1 has an inlet 11, an outlet 12, and a purge air duct 13 communicating the inlet 11 and the outlet 12. The rotor 2 is rotatably arranged in the housing 1, the rotor 2 being adapted to, by rotation, throw water out when the water is sprayed onto the rotor 2. The backward centrifugal wind wheel 3 is arranged at the air outlet 12, and the backward centrifugal wind wheel 3 is used for driving the air flow to flow into the purification air duct 13 from the air inlet 11 and flow out from the air outlet 12. Specifically, the backward centrifugal wind wheel 3 includes a chassis 31, a wind-guiding ring 32, and a plurality of blades 33 arranged between the chassis 31 and the wind-guiding ring 32 in the same direction, and the blades 33 are three-element twisted blades 33.

In this embodiment, the shape of the housing 1 may be various in this embodiment, for example, the cross section may be circular, oval, rectangular, etc., and in order to better fit with the air conditioner, the shape of the housing 1 may be set according to the model of the air conditioner used specifically, and is not limited herein, and the following embodiment is described by taking the housing 1 as a cylinder. The casing 1 may have a structure with openings at both ends, the openings at both ends are used as the air inlet 11 and the air outlet 12, the casing 1 may also have a structure with openings at both ends, the air inlet 11 is provided on one circumferential side of the casing 1, and the air outlet 12 is provided on the other circumferential side of the casing 1. There are various shapes of the intake opening 11 and the outtake opening 12, such as a circle, an ellipse, a square, a polygon, a porous type, etc., and there is no particular limitation. The air inlet 11 comprises a fresh air inlet which is communicated with the outdoor; and/or the indoor air inlet 11 is communicated with the indoor space through the indoor air inlet 11. Because the rotating body 2 is installed in the casing after being wrapped by the casing 1, the casing 1 can prevent water thrown by the rotating body 2 from flowing to the inner wall of the casing, so that other parts on the inner wall of the casing can be prevented from being wetted and damaged. In addition, air intake 11 sets up to a plurality ofly, and along casing 1's circumference interval distribution, realizes a plurality of positions air intakes of circumference, better increase with the area of contact of water.

In one embodiment, as shown in fig. 1, the housing 1 is extended vertically, the air inlet 11 is located at the lower end of the housing 1, and the air outlet 12 is located at the upper end of the housing 1. The water thrown out by the rotator 2 drops downwards due to the action of gravity, so that the air inlet 11 is positioned below the shell 1, the air inlet direction is inconsistent with the dropping direction of the water drops, and the phenomenon of water blowing caused by the fact that air flow is mixed with a large amount of water drops and discharged from the air outlet 12 is prevented.

The rotating body 2 is rotatably arranged in the cleaning air duct 13, and the rotating body 2 is adapted to throw water out by rotation when the water is sprayed on the rotating body 2, i.e. the rotating body 2 is adapted to make the water leave the rotating body 2 after centrifugal movement when the rotating body rotates. This rotator 2 can comprise one or more carousel, when water sprays the carousel, because rotator 2 highly rotates for water cutting on the carousel gets rid of the internal face to casing 1 for tiny water particle, thereby the air current in the process purification wind channel 13 can contact and fuse with tiny water particle, and then reaches the mesh of washing filtered air. The rotary body 2 may be provided with a ventilation structure, and a screen or mesh (not shown) may be laid thereon to cut and purify fine water particles.

Specifically, referring to fig. 1, the air purification module 100 further includes a driving device connected to the rotating body 2, and an output shaft of the driving device is connected to the rotating body 2 to drive the rotating body 2 to rotate along a rotation axis thereof. A drive device is mounted to the housing 1 and is connected to the rotary body 2 to drive the rotary body 2 in rotation about its axis of rotation. The driving device is embodied as a motor or other driving member capable of driving the rotating body 2 to rotate. In practical applications, the peripheral linear velocity of the rotating body 2 is greater than or equal to m/s and less than or equal to 45m/s, such as 10m/s, 15m/s, 18m/s, 23m/s, 28m/s, 35m/s, 45m/s, etc. Preferably 20m/s to 30m/s, such as may be 20m/s, 22m/s, 25m/s, 27m/s, 30m/s, and the like. So, can make water by broken up fully, effectively increase the distribution volume of water droplet and water smoke, can reduce the noise of production again, improve the practicality.

The backward centrifugal wind wheel 3 can be arranged in the shell 1, at the moment, the partial purification air channel 13 in the shell 1 forms a wind wheel air channel, and the shell 1 is provided with an air outlet 12 corresponding to the wind wheel air outlet 35. The backward centrifugal wind wheel 3 may also be arranged outside the casing 1. At this time, the air purification module 100 includes a wind wheel air duct communicated with the air outlet 12 of the purification air duct 13, so that the backward centrifugal wind wheel 3 is disposed in the wind wheel air duct. The number of the blades 33 can be designed according to the use requirement. Preferably, the number of the blades 33 is greater than or equal to 5 and less than or equal to 11. Therefore, the wind wheel structure is simplified under the condition of ensuring the performance of the fan, and the manufacturing cost is further reduced. The number of vanes 33 may be 5, 6, 7, 8, 9, 10, 11. In order to make the air flow distribution more uniform, a plurality of blades 33 are arranged in the same direction and at even intervals between the base plate 31 and the air inducing ring 32.

Here, the ternary twisted blade 33 refers to a blade surface of the blade 33 being a ternary curved surface twisted in space, that is, the blade 33 is changed (twisted) in both the height direction and the flow direction, and the ternary twisted blade 33 may also be referred to as a variable cross-section blade 33. Because the air current is convergent afterwards diffusion when changing from axial to radial, diffusion intensifies after turning for the air current near along induced air circle 32 takes place to separate, because the diffusion degree is big, the disengagement zone easily enlarges and spreads to wind wheel air outlet 35. The blades 33 of the backward centrifugal wind wheel 3 adopt the ternary twisted blades 33, so that the phenomenon of boundary layer separation formed by the fact that air is not attached to the molded lines of the blades 33 at the wind wheel air inlet 34 can be effectively eliminated compared with the backward centrifugal blades 33 with equal sections; and simultaneously, the flowing state of the air in the wind wheel can be optimized, and the boundary separation phenomenon of the air in the air channel between the blades 33 due to diffusion is effectively inhibited. Therefore, the flow in the whole flow channel is optimized, the air quantity is increased, the pneumatic performance of the backward centrifugal wind wheel 3 is greatly improved, the pneumatic noise of the blades 33 is reduced, and the noise quality of the backward centrifugal wind wheel 3 is improved; thereby improving the air quantity of the whole air purification module 100 and reducing the noise of the whole machine.

The utility model discloses air purification module 100 is through making rotatable the setting of rotator 2 in purifying air duct 13, then when rotator 2 is rotatory, gaseous pollutants such as particulate matter and formaldehyde in the air of rotator 2 of flowing through can effectively be caught and filtered to a large amount of small water droplets that outwards throw away, improves purifying effect. Meanwhile, the backward centrifugal wind wheel 3 is used for driving airflow to flow into the purification air duct 13 from the air inlet 11 and flow out from the air outlet 12, so that the blades 33 of the backward centrifugal wind wheel 3 are ternary twisted blades 33. Compared with the backward centrifugal blade 33 with the equal section, the air volume is larger and the noise is smaller, so that the air volume of the air purification module 100 is greatly improved, and the noise of the whole machine is reduced.

In practical application, referring to fig. 2 and fig. 3, a wind wheel air inlet 34 is arranged in the middle of the induced air ring 32, a wind wheel air outlet 35 is defined between the rear edges 334 of two adjacent blades 33, and an air flow channel 36 communicating the wind wheel air inlet 34 and the wind wheel air outlet 35 is defined between the induced air ring 32 and the chassis 31; the upper edge 332 of the blade 33 is connected with the induced draft fan 32, and the lower edge 333 of the blade 33 is connected with the chassis 31. The structure of the wind-guiding ring 32 and the chassis 31 can be reasonably designed by referring to the existing structure, and is not particularly limited herein. And the ratio relation of the diameters, the heights and the like of the induced draft ring 32 and the chassis 31 can also be selected and designed according to actual requirements. When the backward centrifugal wind wheel 3 works, airflow enters the airflow channel 36 from the wind wheel air inlet 34 and then flows out from the wind wheel air outlet 35 between the adjacent blades 33. The fan has high performance, large air quantity and low noise at high rotating speed. In one embodiment, the bottom plate 31 is disposed in an arc shape, and the bottom plate 31 is disposed gradually expanding from top to bottom. The chassis 31 is generally inverted cone or horn shaped. Thus, the chassis 31 can increase the pressure in the airflow channel 36 while forming the inner wall of the air duct, thereby being beneficial to discharging airflow in the airflow channel 36, further increasing the air volume and realizing remote air supply.

Specifically, referring to fig. 4 to 8, the intersection point of the front edge 331 of the blade 33 and the upper edge 332 of the blade 33 is defined as a front upper endpoint 33a, the intersection point of the front edge 331 of the blade 33 and the lower edge 333 of the blade 33 is defined as a front lower endpoint 33b, the intersection point of the rear edge 334 of the blade 33 and the upper edge 332 of the blade 33 is defined as a rear upper endpoint 33c, and the endpoints of the rear edge 334 of the blade 33 and the lower edge 333 of the blade 33 are defined as a rear lower endpoint 33 d; the front upper end point 33a and the rear upper end point 33c are distributed on both sides of a connecting line between the front lower end point 33b and the rear lower end point 33 d.

In this embodiment, it can be understood that the leading edge 331 of the blade 33 refers to the edge of the blade 33 which is located at the air inlet position in the radial air outlet direction of the blade 33. The trailing edge 334 of the blade 33 means that the blade 33 is located at the outermost edge of the wind outlet position in the radial wind outlet direction of the blade 33. The upper edge 332 of the blade 33 refers to the connection between the blade 33 and the air guide ring 32. The lower edge 333 of the vane 33 refers to the connection of the vane 33 to the chassis 31. It should be noted that, since the blade 33 has a certain thickness, the edge of the blade 33 has a certain thickness, and here, the front edge 331, the rear edge 334, the upper edge 332, and the lower edge 333 all refer to an edge line which is the most edge in their respective orientations, and when the edges are arranged in a flush manner, one edge line is arbitrarily selected. Thus, the front upper end point 33a, the front lower end point 33b, the rear upper end point 33c, and the rear lower end point 33d are all uniquely determined points. The front upper end point 33a and the rear upper end point 33c of the blade 33 are distributed on both sides of a connecting line between the front lower end point 33b and the rear lower end point 33d, that is, the front upper end point 33a and the rear upper end point 33c are projected onto a projection plane by taking the connecting line passing through the front lower end point 33b and the rear lower end point 33d and an axis perpendicular to the rear centrifugal wind wheel 3 as the projection plane, so that the two points are distributed on both sides of the connecting line.

By distributing the front upper end point 33a and the rear upper end point 33c on both sides of the connecting line between the front lower end point 33b and the rear lower end point 33d, the entire blade 33 is twisted from bottom to top. Compared with the blade 33 with the equal section, namely the blade 33 formed by stretching from bottom to top, the boundary layer separation phenomenon caused by the fact that the air is not attached to the molded line of the blade 33 at the wind wheel air inlet 34 can be effectively eliminated; and simultaneously, the flowing state of the air in the wind wheel can be optimized, and the boundary separation phenomenon of the air in the air channel between the blades 33 due to diffusion is effectively inhibited. Therefore, the flow in the whole flow channel is optimized, the air quantity is increased, the pneumatic performance of the backward centrifugal wind wheel 3 is greatly improved, the pneumatic noise of the blades 33 is reduced, and the noise quality of the backward centrifugal wind wheel 3 is improved; thereby improving the air quantity of the whole air purification module 100 and reducing the noise of the whole machine.

On the basis of the above embodiment, further, as shown in fig. 4 and 7, the distance from the front upper end point 33a to the axis of the backward centrifugal rotor 3 is S1, and the distance from the front lower end point 33b to the axis of the backward centrifugal rotor 3 is S2, where S1> S2.

In the present embodiment, it can be understood that the axis of the backward centrifugal wind rotor 3 is the rotation axis of the entire backward centrifugal wind rotor 3. Usually, a hub is disposed on the chassis 31, and a shaft hole matched with the output shaft of the driving motor is formed on the hub so as to drive the backward centrifugal wind wheel 3 to rotate around the rotation axis thereof when the output shaft of the driving motor rotates. S1 has three comparisons with S2, i.e., S1< S2; s1 ═ S2 and S1> S2. Since the airflow near the induced draft ring 32 is most easily separated and deteriorated, the complexity of the separation flow determines that the entropy value is higher at the position, and energy loss is brought. Therefore, the axial distance from the upper and lower

front end points

33a and 33b of the blades 33 to the rear centrifugal rotor 3 determines the direction of the leading edge 331 of the blades 33, and thus, it plays an important role in the air volume and noise of the entire rear centrifugal rotor 3. When S1 is S2, the entire front edge 331 of the vane 33 is linearly extended from the bottom to the top, and thus the boundary separation phenomenon of the airflow at the front edge 331 of the vane 33 is likely to occur, and the air volume loss is large and the noise is large. When S1< S2, although the front edge 331 of the entire blade 33 is twisted from bottom to top, since the front upper end point 33a of the blade 33 is closer to the center of the backward centrifugal wind rotor 3 than the front lower end point 33b, when the airflow is discharged from the wind rotor radially from top to bottom, the airflow converges and expands at the front edge 331 of the blade 33, and the airflow is more easily separated at the front edge 331 of the blade 33, which results in a large air volume loss and a large noise. On the other hand, by setting S1> S2, the lower front end point 33b of the blade 33 is closer to the center of the backward centrifugal rotor 3 than the upper front end point 33a, and when the air flow is blown out from the top down and the radial direction of the rotor, the front edge 331 of the blade 33 is expanded and then converged, and therefore, even if the separation is slight at the time of starting turning, the separation is suppressed and is not easily diffused by the subsequent convergence stage, and the air flow can be greatly increased and the noise can be effectively reduced.

In order to verify the air output and noise of the backward centrifugal wind wheel 3 under the above three conditions respectively at different rotating speeds, the backward centrifugal wind wheel 3 is tested under different rotating speed conditions, and the test data are obtained as the following table 1:

TABLE 1 air output and noise of backward centrifugal wind wheel 3 under different rotation speed conditions

As can be seen from table 1, the noise with the same air volume of S1> S2 is significantly less than the noise with the same air volume of S1< S2 and S1 ═ S2 at the same rotation speed. Therefore, the S1> S2 can enable the backward centrifugal wind wheel 3 to obtain larger air outlet amount and smaller noise.

In a preferred embodiment, as shown in fig. 2 to 8, the rear lower end point 33d is located forward of the rear upper end point 33c in the rotational direction of the blade 33.

In the present embodiment, it is understood that the plurality of blades 33 are radially installed between the wind-guiding ring 32 and the base plate 31 in the same rotation direction. And the rotation direction of the blades 33 coincides with the overall rotation direction of the wind wheel. In the rotational direction of the blade 33, there are three cases in the positional relationship between the rear lower end point 33d and the rear upper end point 33c, that is, the rear lower end point 33d is flush with the rear upper end point 33 c; the rear lower end point 33d is located forward of the rear upper end point 33 c; the rear lower end point 33d is located rearward of the rear upper end point 33 c. When the rear lower end point 33d is flush with the rear upper end point 33c, the rear edge 334 of the entire blade 33 is linearly extended, and the airflow is blown out from the wind wheel outlet 35 along the rotation direction of the blade 33, so that when the airflow is blown out from the front edge 331 to the rear edge 334, the airflow is partially blocked, part of the airflow is lost, and noise is easily generated. When the rear lower end point 33d is located behind the rear upper end point 33c, the airflow is blown out from the wind wheel air outlet 35 along the direction of the rear edge 334, i.e., from the rear lower end point 33d toward the rear upper end point 33c, so that the airflow is blown out upward as a whole, and the airflow enters from the upper air inducing ring 32, which easily causes backflow and turbulence phenomena, reduces the overall air volume, and generates loud noise. And by making the rear lower end point 33d located forward of the rear upper end point 33c in the rotational direction of the blade 33. When the airflow is blown out from the trailing edge 334 of the blade 33, the airflow is blown out downward along the extending direction of the trailing edge 334, so that the backflow and turbulence phenomena can be effectively prevented, and the whole backward centrifugal wind wheel 3 has larger air volume and smaller noise.

In order to verify that the rear centrifugal rotor 3 is at the same level with the rear upper end point 33c in the rotation direction of the blades 33 at different rotation speeds; the rear lower end point 33d is located forward of the rear upper end point 33 c; the rear lower end point 33d is located behind the rear upper end point 33c, the air output and noise under three conditions are tested on the rear centrifugal wind wheel 3 under different rotating speed conditions, and the test data are obtained as shown in the following table 2:

TABLE 2 air output and noise of the backward centrifugal wind wheel 3 under different rotation speed conditions

As can be seen from table 2, at the same rotation speed, the same air volume noise when the rear lower end point 33d is located forward of the rear upper end point 33c in the rotation direction of the blade 33 is significantly smaller than the same air volume noise when the rear lower end point 33d is flush with the rear upper end point 33c and the rear lower end point 33d is located rearward of the rear upper end point 33 c. Thereby, the rear lower end point 33d is located forward of the rear upper end point 33c in the rotation direction of the blade 33, and a large air output and a small noise can be obtained for the backward centrifugal wind rotor 3.

Further, referring to fig. 2 to 8 again, the front lower end point 33b is located in front of the front upper end point 33a in the rotation direction of the blade 33. Therefore, the trends of the front edge 331 and the rear edge 334 of the whole blade 33 are consistent, when the airflow blows from the front edge 331 to the rear edge 334, the flow speed change is small, the flowing state of the airflow between the blades 33 is optimized, the aerodynamic noise of the backward centrifugal wind wheel 3 is effectively reduced, and the noise quality of the wind wheel is improved.

In one embodiment, as shown in fig. 2, 4, 5 and 8, the blade 33 includes a first connecting section 335 connected to the wind-guiding ring 32 and a second connecting section 336 connected to the chassis 31, and the thickness of the blade 33 of the first connecting section 335 is greater than that of the blade 33 of the second connecting section 336. So for the thickness of blade 33 is the change setting in the direction of height, can play the water conservancy diversion effect, and make the air current more smooth and easy from wind wheel air intake 34 flow direction wind wheel air outlet 35 simultaneously, optimize the load distribution of blade 33, and then optimize the amount of wind and noise reduction. The thickness of the vane 33 may taper from the first connecting section 335 to the second connecting section 336.

In order to verify the air output and noise of the air purification module 100, the backward centrifugal wind wheel 3 using the three-element twisted blades 33 and the backward centrifugal wind wheel 3 using the blades 33 with equal cross-section according to the present application are tested under different rotation speeds to obtain the following test data (i.e. as shown in fig. 9):

TABLE 3 air purification Module 100 air output and noise Using two different blades 33 at different speeds

According to table 3, it can be known that, at different rotation speeds, the backward centrifugal wind wheel 3 adopting the ternary twisted blades 33 of the present application has a significantly higher air volume and a significantly lower noise than the backward centrifugal wind wheel 3 adopting the blades 33 with equal cross sections. Therefore, the air purification module 100 can obtain a larger air output and a smaller noise.

In one embodiment, referring to fig. 1, the rotating body 2 includes a bracket (not shown) and a screen (not shown) mounted on the bracket (not shown), and the rotating body 2 is adapted to rotate to throw water out when the water is sprayed on the screen (not shown).

In this embodiment, the support (not shown) may be provided in one or more layers, i.e. the screen (not shown) may be laid in one or more layers. The screen (not shown) can be fixed on the bracket (not shown), for example, the screen (not shown) can be fixedly connected by welding, riveting or the like, and the screen (not shown) can be detachably connected with the bracket (not shown), for example, the screen can be detachably connected by clamping, screwing, crimping, glue bonding or the like. The support (not shown) provides a supporting function for the installation of the screen (not shown), the support (not shown) may be a solid disc-shaped structure, when the rotating body 2 is installed in the purifying air duct 13, an air passing channel is formed between the rotating body 2 and the inner wall surface of the housing 1, then when water is cut into fine water drops along with the rotation of the screen (not shown) and thrown out into the air passing channel, particulate matters, formaldehyde and the like in the air are purified by the water after being sufficiently contacted with the water drops in the air passing channel. The support (not shown) may also be in a shape of intersecting a plurality of radiating ribs, a ring structure, or the like, and the general shape of the support (not shown) may be circular, rectangular, irregular, or the like, which is not specifically limited herein, and only needs to provide support for installing the screen (not shown). In this way, the air flow can circulate from the middle of the support (not shown), i.e. directly through the axial direction of the screen (not shown). So that the air flow can be sufficiently contacted with the fine particle water drops on the screen (not shown), thereby making the purification effect better.

Due to the porous structure of the screen (not shown), the rotating body 2 has good water viscosity, so that water drops sprayed on the screen (not shown) are distributed more widely and uniformly, and the water drops can reach the required particle size when rotating along with the rotating body 2. When the screen (not shown) rotates at a high speed, the water sprayed on the screen (not shown) forms high-speed moving water drops which are distributed on the screen (not shown) and can be thrown out along with the screen (not shown), the water drops are fully contacted and mixed with the air flowing in from the air inlet 11, particulate matters and formaldehyde of the air are fully contacted and then purified by the water, and therefore the air can be effectively purified.

In one embodiment, the air purification module 100 further includes a water supply assembly including a water tank 4 and a spray head 5, and the spray head 5 is used to spray water in the water tank 4 onto the rotating body 2.

In the present embodiment, the water tank 4 is used to store water. One or more spray heads 5 can be provided, the spray heads 5 can rotate or can be fixed, and the spray heads 5 can be positioned above the rotating body 2 or below the rotating body 2. The spray head 5 is communicated with the water tank 4 through a hose. Specifically, the water supply assembly may further include a water pump, and the water in the water tank 4 is pumped into the spray head 5 by the water pump, so that the water is sprayed to the rotating body 2 for water washing and purification. In order to prevent water combined with particles in the air from falling back to the water tank 4, in practical application, a water receiving tray is arranged below the spray head 5, and a water outlet communicated with the outside is formed in the water receiving tray. So, the sewage after can catching and air contaminant mixing is connect to the water collector, and can be outside the discharge machine of sewage. So that it is possible to prevent the water in the water tank 4 from being polluted to cause secondary pollution of air. In other embodiments, a water supply pipe communicating with the water tank 4 may be provided such that the water supply pipe passes through a water supply passage in the middle of the rotating body 2 and a water spray hole is opened in a circumferential wall of the water supply pipe. The water drops can be uniformly and effectively distributed on the multi-layer screen (not shown), and the washing and filtering effect is better.

The utility model discloses still provide an indoor set of air conditioner, please refer to fig. 10, this indoor set of air conditioner includes casing 200 and air purification module 100, wherein, casing 200 is equipped with heat transfer air intake 210, heat transfer air outlet 220, purify air intake 230 and purification air outlet 240, heat transfer air intake 210 and heat transfer air outlet 220 intercommunication, purify air intake 230 and purify air outlet 240 intercommunication, this air purification module 100's concrete structure refers to above-mentioned embodiment, because this indoor set of air conditioner has adopted the whole technical scheme of above-mentioned all embodiments, consequently, all beneficial effects that the technical scheme that above-mentioned embodiment brought have at least, no longer give unnecessary details here one by one. The indoor unit of the air conditioner can be a floor type indoor unit of the air conditioner, a wall-mounted indoor unit of the air conditioner, a mobile air conditioner and the like.

The indoor unit of the air conditioner further comprises a heat exchanger and a heat exchange fan. The casing 200 extends in the vertical direction, the casing 200 is connected to the heat exchange air ducts of the heat exchange air inlet 210 and the heat exchange air outlet 220, and the heat exchanger and the heat exchange fan are arranged in the heat exchange air ducts. Indoor air enters the heat exchange air duct from the heat exchange air inlet 210, exchanges heat through the heat exchanger, and is blown out from the heat exchange air outlet 220.

There are various ways of fixing the air purification module 100 and the chassis 200, for example, in some embodiments, the air purification module 100 and the chassis 200 are fixed by a snap; in some embodiments, the air purification module 100 is fixed to the cabinet 200 by means of screws; in some embodiments, the air purification module 100 and the cabinet 200 are fixed by welding. The fixing manner of the air purification module 100 and the cabinet 200 is not limited as long as the connection therebetween can be achieved.

The air purification module 100 may be installed inside or outside the cabinet 200, and the following description will take the case where the air purification module 100 is installed inside the cabinet 200 as an example. In one embodiment, the air purification module 100 is installed at the bottom of the chassis 200, and the air purification module 100 is installed at the bottom of the chassis 200 and is vertically disposed, so that it can be prevented from occupying a lateral space, and the occupation of the indoor lateral space is reduced. A purge air inlet 230 and a purge air outlet 240 are disposed on the peripheral side of the casing 200, the purge air inlet 230 is communicated with the air inlet 11, and the purge air outlet 240 is communicated with the air outlet 12 (the purge air outlet 240 is specifically communicated with an air duct formed by an air duct housing).

The following specifically describes the air purification process: indoor air or fresh air enters the casing 200 from the purifying air inlet 230 under the action of the backward centrifugal wind wheel 3, and flows into the purifying air duct 13 from the air inlet 11. The water pump conveys water in the water tank to the spray head 5 through a hose, and the spray head 5 sprays the water on a rotary screen (not shown) on the rotating body 2; the rotating body 2 is driven by the driving motor 4 to rotate, the screen (not shown) on the rotating body 2 rotating at a high speed cuts water and generates centrifugal force to throw the water out to the periphery, fine water flow or water particles are formed on the screen (not shown), air is fully contacted with the water flow or water particles moving at a high speed on the screen (not shown), particulate matters in the air, such as organic matters such as tiny dust, formaldehyde and the like, are dissolved in the water or attached to the water to fall off, the purified air flows upwards and flows into an air channel of a purifying fan through the air outlet 12, and finally the air is blown out from a purified air outlet 240 on the casing 200.

The utility model also provides an air conditioner, this air conditioner includes machine in air condensing units and the air conditioning, and the machine passes through the refrigerant pipe in the air conditioning to be connected with air condensing units. The specific structure of the air purification module 100 refers to the above embodiments, and since the air conditioner indoor unit adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

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

1. An air purification module, comprising:

the air purifier comprises a shell, a first air inlet, a second air outlet and a purifying air duct, wherein the shell is provided with an air inlet, an air outlet and a purifying air duct which communicates the air inlet with the air outlet;

a rotating body rotatably disposed within the housing, the rotating body being adapted to spin water outwardly when the water is sprayed onto the rotating body; and

the backward centrifugal wind wheel is arranged at the air outlet and used for driving airflow to flow into the purification air channel from the air inlet and flow out from the air outlet, the backward centrifugal wind wheel comprises a chassis, an air guide ring and a plurality of blades which are arranged in the same direction on the chassis and between the air guide rings, and the blades are ternary twisted blades.

2. The air purification module of claim 1,

defining the intersection point of the front edge of the blade and the upper edge of the blade as a front upper endpoint, the intersection point of the front edge of the blade and the lower edge of the blade as a front lower endpoint, the intersection point of the rear edge of the blade and the upper edge of the blade as a rear upper endpoint, and the intersection point of the rear edge of the blade and the lower edge of the blade as a rear lower endpoint;

3. The air purification module of claim 2, wherein the distance from the upper front end point to the axis of the rearward centrifugal rotor is S1, and the distance from the lower front end point to the axis of the rearward centrifugal rotor is S2, wherein S1> S2.

4. The air purification module of claim 3, wherein the rear lower endpoint is located forward of the rear upper endpoint in a rotation direction of the blade.

5. The air purification module of claim 4, wherein the lower front end point is located forward of the upper front end point in a rotation direction of the blade.

6. The air purification module according to any one of claims 1 to 5, wherein the blade includes a first connection section connected to the induced draft ring, and a second connection section connected to the base pan, and a blade thickness of the first connection section is greater than a blade thickness of the second connection section.

7. The air purification module of claim 1, wherein the number of blades is greater than or equal to 5 and less than or equal to 11.

8. The air purification module according to any one of claims 1 to 5, wherein the base plate is arranged in an arc shape, and the base plate is arranged gradually expanding from top to bottom.

9. The air purification module of claim 2, wherein a wind wheel inlet is formed in the middle of the induced air ring, a wind wheel outlet is defined between the rear edges of two adjacent blades, and an airflow channel for communicating the wind wheel inlet and the wind wheel outlet is defined between the induced air ring and the chassis; the upper edge of the blade is connected with the induced draft ring, and the lower edge of the blade is connected with the chassis.

10. The air purification module according to claim 1, further comprising a water supply assembly including a water tank and a spray head to spray water in the water tank onto the rotary body; and/or (c) and/or,

the air purification module further comprises a driving device, and an output shaft of the driving device is connected with the rotating body so as to drive the rotating body to rotate; and/or (c) and/or,

the linear velocity of the outer edge of the rotating body is greater than or equal to 10m/s and less than or equal to 45 m/s.

11. An indoor unit of an air conditioner, comprising:

the air purifier comprises a shell, a heat exchange air inlet, a heat exchange air outlet, a purification air inlet and a purification air outlet, wherein the shell is provided with the heat exchange air inlet, the heat exchange air outlet, the purification air inlet and the purification air outlet; and

the air purification module according to any one of claims 1 to 10, wherein the air purification module is located in the housing, the air inlet of the housing of the air purification module is communicated with the purification air inlet, and the air outlet of the housing of the air purification module is communicated with the purification air outlet.

12. An air conditioner, comprising:

an air conditioner outdoor unit; and the number of the first and second groups,

the indoor unit of claim 11, which is connected to the outdoor unit of an air conditioner through a refrigerant pipe.