Air purification module and air conditioner indoor unit

Abstract

The present invention discloses an air purification module and an indoor unit of an air conditioner. The air purification module includes a shell, a water washing component and a wind wheel bracket. The shell has a purification air duct. The water washing component is arranged in the purification air duct for washing air. The wind wheel bracket is installed in the shell and is located above the water washing component. The wind wheel bracket includes an air collecting circle and an air outlet frame connected to the upper end of the air collecting circle. An air outlet is formed on the side of the air outlet frame, and the air outlet connects the purification air duct with the external environment. The centrifugal wind wheel is installed in the air outlet frame, and the lower end of the centrifugal wind wheel extends into the air collecting circle. The air purification module of the present invention can reduce the backflow of air blown out from the air outlet to the inside of the air purification module, ensuring that the air purification module has a large air volume.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air purification module and an air conditioner indoor unit. Background Art

[0002] As users pay more attention to indoor health issues, air conditioning health has become the primary concern of users. The existing air inlet of the air conditioner is generally equipped with a screen to filter impurities such as dust and particulate matter, but the filtered air is not fresh and does not achieve the refreshing and slightly moist feeling of nature. In order to meet the user's fresh and comfortable feeling, in an exemplary embodiment, a supergravity water washing purification device is used to purify dust, formaldehyde, and TOVC in the air, and at the same time, floating microorganisms, bacteria, and viruses in the air can be absorbed. The purified air can also humidify the air, thereby achieving the requirements of fresh and slightly moist. However, in this exemplary embodiment, the supergravity water washing purification device usually uses a conventional centrifugal wind wheel to blow air out of the purification air duct. The lower end of the centrifugal wind wheel is relatively close to the air outlet. The air blown out from the air outlet is easy to flow back from the gap between the lower end of the centrifugal wind wheel and the air outlet, resulting in a decrease in the air volume. Under the same air volume, the noise becomes significantly larger. Summary of the invention

[0003] The main purpose of the present invention is to provide an air purification module, which aims to reduce the backflow of air blown out from the air outlet into the air purification module, and ensure that the air purification module has a larger air volume.

[0004] To achieve the above-mentioned object, the present invention proposes an air purification module, which includes a shell, a water washing part and a wind wheel bracket. The shell has a purification air duct. The water washing part is arranged in the purification air duct for washing air. The wind wheel bracket is installed on the shell and is located above the water washing part. The wind wheel bracket includes an air collecting circle and an air outlet frame connected to the upper end of the air collecting circle. An air outlet is formed on the side of the air outlet frame, and the air outlet connects the purification air duct with the external environment. The centrifugal wind wheel is installed in the air outlet frame, and the lower end of the centrifugal wind wheel extends into the air collecting circle.

[0005] Optionally, the wind collecting ring includes an wind collecting ring and an air outlet ring connected to the upper end of the wind collecting ring, and the air outlet ring is arranged to expand gradually from bottom to top; the lower end of the centrifugal wind wheel is provided with an air induction ring, and the air induction ring extends into the air outlet ring.

[0006] Optionally, the air outlet ring includes a first ring body connected to the upper end of the air collecting ring, and a second ring body connected to the upper end of the first ring body, and the side wall of the first ring body corresponding to the air induction ring is arranged in a convex arc shape toward the air induction ring.

[0007] Optionally, the side wall of the induced draft ring extends upward to above the second ring body, the side wall of the second ring body corresponding to the induced draft ring is arranged in a convex arc shape toward the induced draft ring, and the radius of the circle corresponding to the arc surface of the second ring body is smaller than the radius of the circle corresponding to the arc surface of the first ring body.

[0008] Optionally, the lower end of the air outlet ring is connected to the outer wall surface of the air collecting ring, and the upper end of the air collecting ring is provided with an air guide ring extending upward toward the inner side of the air induction ring, and the air guide ring is arranged to be tapered from bottom to top.

[0009] Optionally, the radius of the upper opening of the air guide ring is smaller than the radius of the lower peripheral edge of the air induction ring.

[0010] Optionally, the centrifugal wind wheel includes a chassis, an air induced draft ring, and a plurality of fan blades connecting the chassis and the air induced draft ring, and a wind wheel air outlet is formed between the upper edge of the air induced draft ring and the chassis to blow air toward an air outlet, and the height of the wind wheel air outlet is greater than the height of the air outlet of the air outlet frame.

[0011] Optionally, the upper edge of the wind wheel air outlet is higher than the upper edge of the air outlet; and / or the lower edge of the wind wheel air outlet is lower than the lower edge of the air outlet of the air outlet frame.

[0012] Optionally, an air guide portion is protruding from the upper edge of the air outlet toward the upper edge of the wind wheel air outlet, and the lower surface of the air guide portion is arranged in a convex arc shape downward.

[0013] Optionally, the air outlet frame is provided with a plurality of air outlets, and the plurality of air outlets are arranged at intervals along its circumference.

[0014] Optionally, the water washing component can be rotatably installed in the purification air duct, and the water washing component is suitable for throwing water out in its radial direction by rotation when water is sprayed on the water washing component; a purification component is also provided above the water washing component, and the purification component is used to purify and filter air.

[0015] Optionally, when the air purification module is working, the linear speed of the outer edge of the water washing part is 10m / s to 45m / s.

[0016] The present invention also provides an air conditioner indoor unit, the air conditioner indoor unit comprises an air heat exchange module and an air purification module. The air heat exchange module comprises a shell and a heat exchange device, the shell is provided with a heat exchange air inlet, a heat exchange air outlet, and a heat exchange air duct connecting the heat exchange air inlet and the heat exchange air outlet, and the heat exchange device is installed in the heat exchange air duct. The air purification module is connected to the lower end of the air heat exchange module.

[0017] The air purification module includes a shell, a water washing component and a wind wheel bracket. The shell has a purification air duct. The water washing component is arranged in the purification air duct for washing air. The wind wheel bracket is installed in the shell and is located above the water washing component. The wind wheel bracket includes an air collecting circle and an air outlet frame connected to the upper end of the air collecting circle. An air outlet is formed on the side of the air outlet frame, and the air outlet connects the purification air duct with the external environment. The centrifugal wind wheel is installed in the air outlet frame, and the lower end of the centrifugal wind wheel extends into the air collecting circle.

[0018] The technical solution of the present invention is to install a wind wheel bracket on the housing, install the centrifugal wind wheel on the air outlet frame of the wind wheel bracket, and install the centrifugal wind wheel in the wind collecting circle of the wind wheel bracket, so that the lower end of the centrifugal wind wheel is relatively far away from the air outlet, and it is not easy to form a negative pressure belt between the lower end of the centrifugal wind wheel and the lower periphery of the air outlet, so that the airflow blown out from the air outlet is not easy to flow back from the gap between the lower end of the centrifugal wind wheel and the lower periphery of the air outlet, thereby ensuring a larger air volume. Therefore, under the condition of the same air volume, the noise is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of an air conditioner indoor unit of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of an air purification module according to an embodiment of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of a centrifugal wind wheel being assembled on a wind wheel bracket;

[0023] Figure 4 for Figure 3 Schematic diagram of the structural decomposition of the central centrifugal wind wheel and the wind wheel bracket;

[0024] Figure 5 for Figure 3 The front view of the assembly structure of the centrifugal wind wheel and the wind wheel bracket;

[0025] Figure 6 for Figure 5 A cross-sectional view of the assembly structure along line II;

[0026] Figure 7 for Figure 5 A cross-sectional view of the assembly structure along line II-II;

[0027] Figure 8 for Figure 7 The enlarged view of point A in the middle;

[0028] Fig. 9 The figure is a comparison chart of air volume-noise between the air purification module of the present invention and a conventional air purification module.

[0029] Description of Figure Numbers:

[0030] Label name Label name 100 Air purification module 1402 The second ring 110 case 1403 Air outlet 111 Purify air duct 1404 Air guide 120 Washable Parts 150 Centrifugal wind wheel 130 Purification components 151 Chassis 140 Wind wheel bracket 152 Air induction ring 141 Wind collecting circle 153 Wind blade 142 Air outlet frame 1501 Wind wheel outlet 143 Cover 160 Drive motor 1411 Wind ring 170 Water supply parts 1412 Air outlet ring 180 Water supply tank 1413 Air guide ring 101 gap 1401 The first ring 200 Air heat exchange module

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or solutions that satisfy both A and B.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] See also Figure 1The present invention provides an air purification module 100, which can be applied to an indoor unit of an air conditioner, especially a floor-standing indoor unit of an air conditioner. The air purification module 100 is used to purify air and send the purified air to an indoor environment to improve the air quality of the indoor environment.

[0036] See also Figures 2 to 4 In one embodiment of the air purification module 100 of the present invention, the air purification module 100 includes a housing 110, a water washing component 120, a wind wheel bracket 140 and a centrifugal wind wheel 150. The housing 110 has a purification air duct 111. The water washing component 120 is arranged in the purification air duct 111, and is used to wash the air passing through the purification air duct 111. The wind wheel bracket 140 is installed on the housing 110 and is located above the water washing component 120. The wind wheel bracket 140 includes a wind collecting circle 141 and an air outlet frame 142 connected to the upper end of the wind collecting circle 141. The side of the air outlet frame 142 is formed with an air outlet 1403, and the air outlet 1403 connects the purification air duct 111 with the external environment. The centrifugal wind wheel 150 is installed in the air outlet frame 142, and the lower end of the centrifugal wind wheel 150 extends into the air outlet channel of the wind collecting circle 141. The centrifugal fan wheel 150 is used to drive air to enter the purification air duct 111 and then be blown out through the air outlet 1403 .

[0037] Specifically, the housing 110 is generally cylindrical and extends in the up-down direction. For example, the housing 110 may be square or circular. The purification air duct 111 in the housing 110 may extend in the up-down direction accordingly. An air inlet is formed at the bottom of the housing 110 or at a side wall near the bottom, and the air inlet is connected to the lower end of the purification air duct 111.

[0038] The wind wheel bracket 140 is installed on the upper end of the housing 110 through the wind collecting ring 141, and the airflow blown out from the purification air duct 111 is squeezed and concentrated to the air outlet frame 142 of the wind wheel bracket 140 through the wind collecting ring 141. The air outlet frame 142 can have one or more air outlets 1403, and the air outlet 1403 is used to blow the airflow blown out from the purification air duct 111 to the indoor environment. For example, when the air outlet frame 142 has one air outlet 1403, the air outlet 1403 can be arranged in a semi-circular or circular shape to achieve circular air outlet; when the air outlet frame 142 has multiple air outlets 1403, the multiple air outlets 1403 are arranged along the circumference of the air outlet frame 142, and circular air outlet can also be achieved.

[0039] When the air purification module 100 purifies the air, the air flows from bottom to top in the purification air duct 111. When the air passes through the water washing unit 120, it is washed and purified by the water washing unit 120 to remove dust, bacteria, organic matter and other impurities in the air. The air after passing through the water washing unit 120 continues to flow upward to the air outlet frame 142 of the wind wheel bracket 140, and is finally blown out of the air outlet 1403 by the centrifugal wind wheel 150. Since the lower end of the centrifugal wind wheel 150 extends into the wind collecting circle 141, the lower end of the centrifugal wind wheel 150 is relatively far away from the air outlet 1403, and it is not easy to form a negative pressure belt between the lower end of the centrifugal wind wheel 150 and the lower periphery of the air outlet 1403, so that the airflow blown out from the air outlet 1403 is not easy to flow back from the gap 101 between the lower end of the centrifugal wind wheel 150 and the lower periphery of the air outlet 1403, thereby ensuring a large air volume.

[0040] The technical solution of the present invention is to install the wind wheel bracket 140 on the housing 110, and install the centrifugal wind wheel 150 on the air outlet frame 142 of the wind wheel bracket 140, and the centrifugal wind wheel 150 is installed in the wind collecting circle 141 of the wind wheel bracket 140, so that the lower end of the centrifugal wind wheel 150 is relatively far away from the air outlet 1403, and it is not easy to form a negative pressure belt between the lower end of the centrifugal wind wheel 150 and the lower periphery of the air outlet 1403, so that the airflow blown out from the air outlet 1403 is not easy to flow back from the gap 101 between the lower end of the centrifugal wind wheel and the lower periphery of the air outlet 1403, thereby ensuring a larger air volume. Therefore, under the condition of equal air volume, the noise is improved.

[0041] See also Figure 4 Based on the above embodiment, the centrifugal wind wheel 150 is a backward centrifugal wind wheel. The centrifugal wind wheel 150 includes a chassis 151, an air induction ring 152, and a plurality of fan blades 153 connecting the chassis 151 and the air induction ring 152. The air induction ring 152 is arranged in a cylindrical shape that gradually expands from bottom to top. The upper edge of the air induction ring 152 and the chassis 151 form a wind wheel outlet 1501 that blows air toward the outlet 1403 (the wind wheel outlet 1501 can be referred to Figure 7 ).

[0042] In order to drive the centrifugal wind wheel 150 to rotate, the air purification module 100 further includes a drive motor 160 mounted on the wind wheel bracket 140, and the motor shaft of the drive motor 160 is connected to the centrifugal wind wheel 150 to drive the centrifugal wind wheel 150 to rotate. The drive motor 160 is mounted on the cover plate 143 of the wind wheel bracket 140. The motor shaft of the drive motor 160 passes through the cover plate 143 and is connected to the centrifugal wind wheel 150.

[0043] When assembling the centrifugal wind wheel 150 to the wind wheel bracket 140, first fix the driving motor 160 on the cover plate 143, and then connect the centrifugal wind wheel 150 to the motor shaft of the driving motor 160, so that the centrifugal wind wheel 150 and the cover plate 143 are connected as a whole; finally, the integrated structure of the cover plate 143 and the centrifugal wind wheel 150 is installed from the top of the air outlet frame 142, and then the cover plate 143 is fixed to the air outlet frame 142 by a screw structure, which is simple to operate and convenient to disassemble and assemble.

[0044] See also Figure 5 and Figure 6 The specific number of the fan blades 153 is not limited here, and can be optimized and designed according to the specific air volume requirements. The multiple fan blades 153 of the centrifugal fan wheel 150 are arranged in sequence along the circumference thereof and are tilted in the same direction.

[0045] See also Figure 4 and Figure 7 Based on any of the above embodiments, the wind collecting circle 141 includes an wind collecting ring 1411 and an air outlet ring 1412 connected to the upper end of the wind collecting ring 1411, and the air induction ring 152 at the lower end of the centrifugal wind wheel 150 extends into the air outlet ring 1412, and the wind blown out from the wind wheel air outlet 1501 is guided to the air outlet 1403 by the air outlet ring 1412.

[0046] Specifically, a gap 101 is formed between the inner wall surface of the air induction ring 152 and the air collection ring 141 to prevent the air induction ring 152 from interfering with the air outlet ring 1412 when the centrifugal wind wheel 150 rotates at a high speed during operation. Figure 2 ) The airflow blown out may flow into the gap 101 and generate noise.

[0047] See also Figure 7 and Figure 8 In this embodiment, in order to prevent the airflow blown out from the purification air duct 111 from jumping into the gap 101, the lower end of the air outlet ring 1412 is connected to the outer wall surface of the air collecting ring 1411, and the upper end of the air collecting ring 1411 is provided with an air guide ring 1413 extending upward toward the inner side of the air collecting ring 1411, and the air guide ring 1413 is arranged in a tapered shape from bottom to top. When the airflow blown out from the purification air duct 111 is squeezed and concentrated by the air collecting ring 1411 and blown upward to the air guide ring 1413, the air guide ring 1413 further squeezes and guides it to the inner side of the air induction ring 152 of the centrifugal wind wheel 150, thereby preventing it from jumping into the gap 101 and avoiding the noise of jumping.

[0048] Furthermore, the opening radius of the upper end of the air guide ring 1413 is smaller than the opening radius of the lower end of the air induced ring 152. As shown in the figure, R1 represents the opening radius of the upper end of the air guide ring 1413 (2*R1 is the diameter of the opening of the upper end of the air guide ring 1413); R2 represents the opening radius of the lower end of the air induced ring 152 (2*R2 is the opening diameter of the lower end of the air induced ring 152). Then, R1 should be less than R2, and there should be a spacing △R=R2-R1 between the side walls of the air guide ring 1413 and the air induced ring 152 in the radial direction, and △R>0. This design ensures that the air guide ring 1413 can smoothly introduce the wind blown out of the purification air duct 111 into the inner side of the air induced ring 152.

[0049] See also Figure 7 and Figure 8 In one embodiment, it is also considered that when the centrifugal wind wheel 150 rotates at a high speed, the gap 101 is relatively in a negative pressure state, and the air blown out from the air outlet 1403 may flow back from the gap 101 to the inside of the air purification module 100, resulting in a reduction in air volume. In view of this, in order to reduce the return of the outlet air from the gap 101 to the inside of the air outlet channel, the air outlet ring 1412 is set to expand gradually from bottom to top, so as to be contoured with the shape of the air induction ring 152 of the centrifugal wind wheel 150, so that the gap 101 enclosed between the two is relatively narrow, the wind resistance is relatively large, and the outlet air is difficult to flow back from the gap 101 to the inside of the air outlet channel, ensuring a large air volume.

[0050] Furthermore, the air outlet ring 1412 includes a first ring body 1401 connected to the upper end of the air collecting ring 1411, and a second ring body 1402 connected to the upper end of the first ring body 1401, and the side wall of the first ring body 1401 corresponding to the air induction ring 152 is arranged in a convex arc shape toward the air induction ring 152. In other words, the first ring body 1401 of the air outlet ring 1412 is convexly arranged toward the gap 101 to further narrow the width of the gap 101, greatly increasing the difficulty of the outlet air passing through the gap 101 and flowing back to the inside of the air purification module 100, thereby reducing the amount of outlet air reflux.

[0051] In addition, the opening of the gap 101 near the air outlet 1403 may be reduced to reduce the backflow of the outlet air. Figure 7 and Figure 8 The side wall of the air induced ring 152 extends upward to the top of the second ring body 1402, and the side wall of the second ring body 1402 corresponding to the air induced ring 152 is arranged in a convex arc shape toward the air induced ring 152, and the radius of the corresponding circle of the arc surface of the second ring body 1402 is smaller than the radius of the corresponding circle of the arc surface of the first ring body 1401.

[0052] like Figure 8As shown in , R3 represents the radius of the circle corresponding to the arc surface of the first ring body 1401 of the air outlet ring 1412 (where O1 represents the center of the circle corresponding to the arc surface of the first ring body 1401); R4 represents the radius of the circle corresponding to the arc surface of the second ring body 1402 of the air outlet ring 1412 (where O2 represents the center of the circle corresponding to the arc surface of the second ring body 1402). Then, R4 < R3. This design can make the side wall of the second ring body 1402 closer to the air induction ring 152 relative to the first ring body 1401, thereby reducing the opening of the gap 101 close to the air outlet 1403, increasing the difficulty of the outlet air entering the gap 101, and effectively reducing the amount of outlet air backflow.

[0053] Furthermore, since the lower edge of the induced draft ring 152 forms the lower edge of the wind wheel outlet 1501, the air blown out from the lower edge of the induced draft ring 152 to the wind wheel outlet 1501 will pass through the top of the second ring body 1402, and then will flow along the curved surface of the second ring body 1402, and then will be smoothly guided by the second ring body 1402 to be blown out at the outlet 1403, thereby improving the wind outlet effect.

[0054] Please continue reading Figure 7 and Figure 8 Based on any of the above embodiments, under normal circumstances, since the centrifugal wind wheel 150 generates less noise when working, those skilled in the art usually do not consider the noise reduction problem of the centrifugal wind wheel 150. However, after the centrifugal wind wheel 150 is installed on the wind wheel bracket 140, the wind wheel outlet 1501 of the centrifugal wind wheel 150 and the wind wheel bracket 140 are adapted to each other, which will affect the noise of the centrifugal wind wheel 150.

[0055] In one embodiment, in order to reduce the adaptation problem between the wind wheel air outlet 1501 of the centrifugal wind wheel 150 and the air outlet 1403 on the wind wheel bracket 140, and the impact on the noise of the centrifugal wind wheel 150, optionally, the height of the wind wheel air outlet 1501 of the centrifugal wind wheel 150 is greater than the height of the air outlet 1403 of the air outlet frame 142. It should be noted that the height of the wind wheel air outlet 1501 should refer to the vertical distance from the upper edge of the wind wheel air outlet 1501 to the lower edge of the wind wheel air outlet 1501. Similarly, the height of the air outlet 1403 should also refer to the vertical distance from the upper edge of the air outlet 1403 to the lower edge of the air outlet 1403.

[0056] exist Figure 8In the figure: H1 represents the height of the wind wheel air outlet 1501 of the centrifugal wind wheel 150, and H2 represents the height of the air outlet 1403 of the air outlet frame 142. That is, H1 ≥ H2. When the centrifugal wind wheel 150 blows the wind from its wind wheel air outlet 1501 to the air outlet 1403 of the air outlet frame 142, the air flow is squeezed and blown outward. The squeezed air flow has a higher air pressure and a longer air delivery distance, and is not easy to flow back from the edge, thereby reducing noise.

[0057] Furthermore, after the centrifugal wind wheel 150 is assembled to the wind wheel bracket 140, the upper edge of the wind wheel air outlet 1501 is higher than the upper edge of the air outlet 1403. Specifically, the outer periphery of the chassis 151 of the centrifugal wind wheel 150 forms the upper edge of the wind wheel air outlet 1501. This is equivalent to that the outer periphery of the chassis 151 is higher than the upper edge of the air outlet 1403, and there is a height difference △H1 (as shown in Figure 1) between the position of the outer periphery of the chassis 151 and the upper edge of the air outlet 1403. When the air is blown out from the wind wheel, it is squeezed and blown out downward by the upper edge of the air outlet 1403, which can reduce the upward diffusion of the outlet air and extend the air supply distance.

[0058] Here, in order to prevent the air blown out from the upper edge of the wind wheel air outlet 1501 from directly colliding with the upper edge of the air outlet 1403, an air guide 1404 is convexly provided on the upper edge of the air outlet 1403 toward the upper edge of the wind wheel air outlet 1501, and the lower surface of the air guide 1404 is arranged in a convex arc shape downward. With this design, when the air blown out from the upper edge of the wind wheel air outlet 1501 encounters the air guide 1404, it will flow along the surface of the air guide 1404 and then be guided to the air outlet 1403 by the air guide 1404, thereby preventing the air from directly colliding with the upper edge of the air outlet 1403 and reducing the noise of the air collision.

[0059] Furthermore, the lower edge of the wind wheel air outlet 1501 is lower than the lower edge of the air outlet 1403 of the air outlet frame 142. Specifically, the upper edge of the air induction ring 152 of the centrifugal wind wheel 150 forms the lower edge of the wind wheel air outlet 1501. This is equivalent to that the upper edge of the air induction ring 152 is lower than the lower edge of the air outlet 1403, and there is a height difference △H2 between the upper edge of the air induction ring 152 and the upper edge of the air outlet 1403 (as shown in Figure 8). When the air is blown out from the wind wheel, it is squeezed upward by the upper edge of the air outlet 1403 and blown out.

[0060] In the above embodiments, the "higher" and "lower" should refer to the height comparison in the vertical direction. Since △H1 and △H2 exist at the same time, the centrifugal wind wheel 150 can better squeeze the airflow to blow outwards when blowing the wind from its wind wheel air outlet 1501 to the air outlet 1403 of the air outlet frame 142, so that the squeezed airflow has a higher air pressure, a larger air volume, a longer air delivery distance, and is not easy to flow back from the edge, thereby reducing noise.

[0061] like Fig. 9 As shown, the air purification module of the present invention and the conventional air purification module were tested multiple times under the same conditions, and the test data were plotted as follows: Fig. 9 The air volume-noise change comparison diagram shown in the figure shows that, under the condition of the same air volume, the noise of the air purification module of the present invention is reduced by about 1.5dB to 2dB compared with the conventional air purification module.

[0062] See also Figure 2 Based on any of the above embodiments, for the water washing unit 120, the water washing unit 120 is suitable for washing the air passing through the water washing unit 120 with water when water is supplied to the water washing unit 120, so as to absorb impurities such as dust, bacteria, organic matter, etc. in the air. As for the type of the water washing unit 120, there are many types. For example, but not limited to: a wet film, a water spray pipe, a rotating disk that can rotate to spin water, etc.

[0063] See also Figure 2 In one embodiment, the washing part 120 is a rotating disk that can rotate to throw water. The washing part 120 is rotatably mounted on the purification air duct 111. The washing part 120 is suitable for throwing water out in its radial direction by rotating when water is sprayed on the washing part 120. Specifically, the washing part 120 includes a rotating bracket and a screen disposed on the rotating bracket. The screen can be disposed in a cylindrical shape to surround the rotating bracket, or can be horizontally laid on a plane (virtual plane) perpendicular to the rotation axis.

[0064] When the washing unit 120 is driven to rotate at a high speed, the water supplied to the washing unit 120 is thrown out radially. When the thrown out water meets the screen, the screen cuts the water into small water droplets, and the water droplets are thrown out to the outer edge under the action of centrifugal force. At the same time, the centrifugal wind wheel 150 drives the air to flow rapidly from the bottom to the top of the purification air duct 111. When the airflow meets the washing unit 120, the many water droplets thrown out by the washing unit 120 at a high speed collide with each other. The tiny dust, formaldehyde and other organic matter in the airflow are dissolved in the water droplets and then carried away by the water droplets, thereby playing a role in purifying the air. The purified clean air is blown into the room from the air outlet 1403.

[0065] It is taken into consideration here that when the linear speed of the outer edge of the water washing element 120 is too small, the speed of the water thrown out by the water washing element 120 is small, and the air purification effect is poor. When the linear speed of the outer edge of the water washing element 120 is too large, the energy consumption of the water washing element 120 during rotation is large and the noise generated is large. Continuing to increase the linear speed of the outer edge of the water washing element 120 has little effect on improving the air purification effect.

[0066] Therefore, in this embodiment, when the air purification module 100 is working, the linear speed of the outer edge of the water washing part 120 is required to be 10m / s to 45m / s. For example, but not limited to: 10m / s, 15m / s, 18m / s, 20m / s, 25m / s, 30m / s, 35m / s, 38m / s. The linear speed of the outer edge of the water washing part 120 is limited to 10m / s to 45m / s, which can ensure that the speed of the water thrown out by the water washing part 120 is large, and the noise generated by the rotation of the water washing part 120 is small. In order to facilitate the supply of water to the water washing part 120, the air purification module 100 also includes a water supply part 170 arranged above the water washing part 120, and the water supply part 170 is connected to the water supply tank 180 through a water pump to supply the water in the water supply tank 180 to the water washing part 120. The water supply part 170 can be a nozzle, a nozzle or a leaking plate, etc., which is not specifically limited here.

[0067] Furthermore, a purification component 130 is provided above the washing part 120, and the purification component 130 is used to purify and filter air. The purification component 130 may include one or more combinations of a formaldehyde purification device, a dust removal device, a negative ion generating device, and a water filter.

[0068] See also Figure 1 The present invention also provides an air conditioning indoor unit. The air conditioning indoor unit includes an air heat exchange module 200 and an air purification module 100. The air heat exchange module 200 is installed on the upper end of the air purification module 100 through an intermediate partition. The air heat exchange module 200 includes a shell and a heat exchange device, the shell is provided with a heat exchange air inlet, a heat exchange air outlet, and a heat exchange air duct connecting the heat exchange air inlet and the heat exchange air outlet, and the heat exchange device is installed in the heat exchange air duct. The specific structure of the air purification module refers to the above embodiment. Since the air conditioning indoor unit adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0069] In one embodiment, the heat exchange device includes an indoor heat exchanger and an indoor fan. The indoor fan is used to drive air from the heat exchange air inlet into the heat exchange air duct. After the air in the heat exchange air duct exchanges heat with the indoor heat exchanger, the air is driven by the indoor fan to blow from the heat exchange air outlet into the room to achieve cooling or heating.

[0070] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air purification module, characterized in that: The air purification module comprises: A housing having a purification air duct; an air inlet is formed at the bottom of the housing or at a side wall near the bottom, and the air inlet is connected to the lower end of the purification air duct; A water washing component, which is arranged in the purified air duct and is used for washing air with water; A wind wheel bracket, the wind wheel bracket is installed on the housing and is located above the water washing part, the wind wheel bracket includes an air collecting circle and an air outlet frame connected to the upper end of the air collecting circle, an air outlet is formed on the side of the air outlet frame, and the air outlet connects the purification air duct with the external environment; and A centrifugal wind wheel, wherein the centrifugal wind wheel is installed in the air outlet frame, and the lower end of the centrifugal wind wheel extends into the air collecting circle; The wind collecting ring includes an wind collecting ring and an air outlet ring connected to the upper end of the wind collecting ring, and the air outlet ring is arranged in a gradually expanding shape from bottom to top; an induced draft ring is arranged at the lower end of the centrifugal wind wheel, and the induced draft ring extends into the air outlet ring; the air outlet ring includes a first ring body connected to the upper end of the wind collecting ring, and a second ring body connected to the upper end of the first ring body, and the side wall of the first ring body corresponding to the induced draft ring is arranged in a convex arc shape toward the induced draft ring; the side wall of the induced draft ring extends upward to the top of the second ring body, and the side wall of the second ring body corresponding to the induced draft ring is arranged in a convex arc shape toward the induced draft ring, and the radius of the circle corresponding to the arc surface of the second ring body is smaller than the radius of the circle corresponding to the arc surface of the first ring body.

2. The air purification module according to claim 1, characterized in that: The lower end of the air outlet ring is connected to the outer wall surface of the air collecting ring, and the upper end of the air collecting ring is provided with an air guide ring extending upward toward the inner side of the air induction ring, and the air guide ring is arranged in a tapered shape from bottom to top.

3. The air purification module according to claim 2, characterized in that: The radius of the upper opening of the air guide ring is smaller than the radius of the lower peripheral edge of the air induction ring.

4. The air purification module according to any one of claims 1 to 3, characterized in that: The centrifugal wind wheel includes a chassis, an air induced draft ring, and a plurality of wind blades connecting the chassis and the air induced draft ring. A wind wheel air outlet for blowing air toward an air outlet is formed between the upper edge of the air induced draft ring and the chassis. The height of the wind wheel air outlet is greater than the height of the air outlet of the air outlet frame.

5. The air purification module according to claim 4, characterized in that: The upper edge of the wind wheel air outlet is higher than the upper edge of the air outlet; and / or the lower edge of the wind wheel air outlet is lower than the lower edge of the air outlet of the air outlet frame.

6. The air purification module according to claim 5, characterized in that: An air guide portion is protruded from the upper edge of the air outlet toward the upper edge of the wind wheel air outlet, and the lower surface of the air guide portion is arranged in a convex arc shape downward.

7. The air purification module according to any one of claims 1 to 3, characterized in that: The air outlet frame is provided with a plurality of air outlets, and the plurality of air outlets are arranged at intervals along the circumference thereof.

8. The air purification module as described in any one of claims 1 to 3, wherein the water washing component is rotatably installed in the purification air duct, and the water washing component is suitable for throwing water out in its radial direction by rotation when water is sprayed on the water washing component; a purification component is also provided above the water washing component, and the purification component is used to purify and filter air.

9. The air purification module according to claim 8, characterized in that: When the air purification module is working, the linear speed of the outer edge of the water washing part is 10 m / s~45 m / s.

10. An air conditioner indoor unit, characterized in that: The air conditioner indoor unit comprises: An air heat exchange module, the air heat exchange module comprising a shell and a heat exchange device, the shell being provided with a heat exchange air inlet, a heat exchange air outlet, and a heat exchange air duct connecting the heat exchange air inlet and the heat exchange air outlet, the heat exchange device being installed in the heat exchange air duct; and An air purification module as described in any one of claims 1 to 9; the air purification module is connected to the lower end of the air heat exchange module.

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