Air supply device and air conditioner indoor unit

Abstract

The present invention provides an air supply device and an indoor unit of an air conditioner. The air supply device includes a housing and an air supply assembly, at least part of which is arranged in the housing; the air supply assembly includes: an air supply housing, the air supply housing forms an air duct and an air inlet and an air supply outlet connected to the air duct; a fan blade, at least part of which is arranged in the air duct, and the fan blade is rotatably arranged so that the gas entering the air duct from the air inlet flows out through the air supply outlet; wherein the air supply assembly or the air supply housing is rotatably arranged to change the air supply direction of the air supply outlet; a flow blocking portion is arranged in the gap between the air supply housing and the housing. The air supply device of the present invention solves the problem of small air volume of the air supply device in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to an air supply device and an indoor unit of an air conditioner. Background Art

[0002] When the wall-mounted air conditioner is working, the fan blades rotate, and the indoor air flow passes through the filter, heat exchanger, fan, and air outlet in sequence, and rotates up and down through the air guide plate set at the air outlet to change the air supply direction, thereby realizing the up and down air supply of the air conditioner.

[0003] In the prior art, Figure 1 and Figure 2 As shown, when the air conditioner is working, the air guide plate 1 at the air outlet rotates to change the upward and downward air supply directions. When the air guide plate 1 is in the upward or downward air supply state, since the air guide plate 1 is close to the fan blades, it affects the air flow at the air outlet and has a greater obstruction effect on the air flow, so that the air circulation area of ​​the air outlet is reduced, thereby reducing the air volume, reducing the heat exchange efficiency of the heat exchanger, and reducing the performance of the air conditioner.

[0004] At the same time, when air flows through the air guide plate, eddies are easily generated near the air guide plate 1, resulting in large aerodynamic noise, thereby affecting people's comfort. Summary of the invention

[0005] The main purpose of the present invention is to provide an air supply device and an air conditioner indoor unit to solve the problem of small air volume of the air supply device in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air supply device, comprising a shell and an air supply assembly, wherein at least a portion of the air supply assembly is arranged in the shell; the air supply assembly comprises: an air supply shell, wherein the air supply shell forms an air duct and an air inlet and an air supply outlet connected to the air duct; fan blades, wherein at least a portion of the fan blades are arranged in the air duct, and the fan blades are rotatably arranged so that the gas entering the air duct from the air inlet flows out through the air supply outlet; wherein the air supply assembly or the air supply shell is rotatably arranged so as to change the air supply direction of the air supply outlet; and a flow blocking portion is arranged in the gap between the air supply shell and the shell.

[0007] Further, the flow blocking portion is arranged on the air supply housing; and / or the flow blocking portion is arranged on the outer shell.

[0008] Further, the air supply housing is provided with a plurality of baffles, which are arranged at intervals along the rotation direction of the air supply housing; and / or the outer shell is provided with a plurality of baffles, which are arranged at intervals along the rotation direction of the air supply housing.

[0009] Further, the flow blocking portion is a groove structure; or, the flow blocking portion is a tooth structure.

[0010] Furthermore, the air supply housing includes a volute and a volute tongue, and an air duct, an air inlet and an air supply outlet are formed between the volute and the volute tongue; wherein the fan blades rotate around their rotation axis, and the air supply assembly or the air supply housing rotates around the rotation axis.

[0011] Further, the outer shell includes a first shell portion, at least part of the volute is arranged opposite to the first shell portion, and the volute is provided with a flow blocking portion; and / or the first shell portion is provided with a flow blocking portion; the volute forms a first outer contour surface; or, the volute and the flow blocking portion jointly form the first outer contour surface; the first shell portion forms a first contour surface; or, the first shell portion and the flow blocking portion jointly form a first contour surface; wherein the first outer contour surface is arranged opposite to the first contour surface and are spaced apart.

[0012] Furthermore, the first outer contour surface is a partial arc surface of the first cylindrical surface, and the center line of the first cylindrical surface coincides with the rotation axis; the first contour surface is a partial arc surface of the third cylindrical surface, and the center line of the third cylindrical surface coincides with the rotation axis.

[0013] Furthermore, the distance between the first outer contour surface and the first contour surface is d1; wherein, 0.02R≤d1≤0.2R, and R is the radius of the fan blade.

[0014] Furthermore, the radius of the first cylindrical surface is R1; wherein 1.01R≤R1≤1.5R, and R is the radius of the fan blade.

[0015] Furthermore, the spacing between the first outer contour surface and the first contour surface is d1; the flow blocking portion is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or the flow blocking portion is a tooth structure, the distance between two adjacent tooth structures is L, and the height of the tooth structure is H; wherein L>2d1, H <L。

[0016] Furthermore, the volute has a plurality of first outer contour surfaces, which are arranged in sequence along the rotation direction of the air supply shell; the first shell portion has a plurality of first contour surfaces, which are arranged in sequence along the rotation direction of the air supply shell; the plurality of first outer contour surfaces are arranged in one-to-one correspondence with the plurality of first contour surfaces, and each first outer contour surface is arranged relative to the corresponding first contour surface; wherein the radii of the first cylindrical surfaces corresponding to each first outer contour surface are different, and the radii of the third cylindrical surfaces corresponding to each first contour surface are different.

[0017] Further, the outer shell includes a second shell portion, at least part of the volute tongue is arranged opposite to the second shell portion, and the volute tongue is provided with a flow blocking portion; and / or the second shell portion is provided with a flow blocking portion; the volute tongue forms a second outer contour surface; or, the volute tongue and the flow blocking portion jointly form a second outer contour surface; the second shell portion forms a second contour surface; or, the second shell portion and the flow blocking portion jointly form a second contour surface; wherein the second outer contour surface is arranged opposite to the second contour surface and are spaced apart.

[0018] Furthermore, the second outer contour surface is a partial arc surface of the second cylindrical surface, and the center line of the second cylindrical surface coincides with the rotation axis; the second contour surface is a partial arc surface of the fourth cylindrical surface, and the center line of the fourth cylindrical surface coincides with the rotation axis.

[0019] Furthermore, the distance between the second outer contour surface and the second contour surface is d2; wherein, 0.02R≤d2≤0.2R, and R is the radius of the wind blade.

[0020] Furthermore, the radius of the second cylindrical surface is R2; wherein 1.01R≤R2≤1.5R, and R is the radius of the fan blade.

[0021] Furthermore, the spacing between the second outer contour surface and the second contour surface is d2; the flow blocking portion is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or the flow blocking portion is a tooth structure, the distance between two adjacent tooth structures is L, and the height of the tooth structure is H; wherein L>2d2, H <L。

[0022] Furthermore, the volute tongue has a plurality of second outer contour surfaces, which are arranged in sequence along the rotation direction of the air supply shell; the second shell portion has a plurality of second contour surfaces, which are arranged in sequence along the rotation direction of the air supply shell; the plurality of second outer contour surfaces are arranged in one-to-one correspondence with the plurality of second contour surfaces, and each second outer contour surface is arranged relative to the corresponding second contour surface; wherein the radius of the second cylindrical surface corresponding to each second outer contour surface is different, and the radius of the fourth cylindrical surface corresponding to each second contour surface is different.

[0023] According to another aspect of the present invention, an air conditioner indoor unit is provided, comprising an air supply device, wherein the air supply device is the above-mentioned air supply device.

[0024] The air supply device of the present invention changes the air supply direction of the air supply port by rotating the air supply component or the air supply shell, thereby realizing upward and downward air supply of the air supply device, cancels the air guide plate set at the air supply port in the prior art, changes the method of changing the air supply direction by the air guide plate in the prior art, thereby solving the problem that the air volume is reduced and the air conditioning performance is reduced due to the setting of the air guide plate, and also solves the problem of aerodynamic noise caused by upward and downward air supply on the air guide plate; and, a baffle is provided in the gap between the air supply shell and the outer shell of the air supply device, and when the air supply component or the air supply shell rotates, a vortex is formed when the air flow flows through the baffle, which increases the resistance of the gas to flow through the gap, thereby reducing the backflow of the air supply device and further increasing the air volume of the air supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic diagram showing an air conditioner in the background art supplying air upwards is shown;

[0027] Figure 2 A schematic diagram showing an air conditioner in the background art supplying air downwards is shown;

[0028] Figure 3 A schematic diagram showing an embodiment of an air conditioner indoor unit according to the present invention when air is supplied upward;

[0029] Figure 4 A schematic diagram showing an embodiment of the air supply device according to the present invention when supplying air downwards;

[0030] Figure 5 A schematic structural diagram of another embodiment of an air supply device according to the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 1. Air guide plate; 2. Heat exchanger; 3. Panel; 4. Bottom shell; 5. Filter;

[0033] 10. Shell; 11. First shell part; 111. First contour surface; 12. Second shell part; 121. Second contour surface; 20. Air supply assembly; 21. Air supply shell; 211. Air duct; 212. Air inlet; 213. Air supply outlet; 214. Volute; 215. Volute tongue; 216. First outer contour surface; 217. Second outer contour surface; 22. Fan blade; 221. Rotation axis; 30. Flow blocking part. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] The present invention provides an air supply device, please refer to Figures 3 to 5 , including a shell 10 and an air supply component 20, at least part of which is arranged in the shell 10; the air supply component 20 includes: an air supply shell 21, the air supply shell 21 forms an air duct 211 and an air inlet 212 and an air supply port 213 connected to the air duct 211; a fan blade 22, at least part of which is arranged in the air duct 211, and the fan blade 22 is rotatably arranged so that the gas entering the air duct 211 through the air inlet 212 flows out through the air supply port 213; wherein, the air supply component 20 or the air supply shell 21 is rotatably arranged to change the air supply direction of the air supply port 213; a flow blocking portion 30 is arranged in the gap between the air supply shell 21 and the shell 10.

[0038] The air supply device of the present invention changes the air supply direction of the air supply port 213 by rotating the air supply component 20 or the air supply shell 21, thereby realizing upward and downward air supply of the air supply device, eliminating the air guide plate 1 set at the air supply port in the prior art, changing the method of changing the air supply direction by the air guide plate 1 in the prior art, thereby solving the problem that the air volume is reduced and the air conditioning performance is reduced due to the setting of the air guide plate 1, and also solving the problem of aerodynamic noise caused by the upward and downward air supply of the air guide plate 1; and, a baffle 30 is provided in the gap between the air supply shell 21 and the outer shell 10 of the air supply device, when the air supply component 20 or the air supply shell 21 rotates, the air flow forms a vortex when flowing through the baffle 30, thereby increasing the resistance of the gas flowing from the gap, thereby reducing the backflow of the air supply device, and further increasing the air volume of the air supply device.

[0039] In this embodiment, the blocking portion 30 is disposed on the air supply housing 21 ; and / or the blocking portion 30 is disposed on the outer shell 10 .

[0040] In this embodiment, the air supply housing 21 is provided with a plurality of flow blocking parts 30, and the plurality of flow blocking parts 30 are arranged at intervals along the rotation direction of the air supply housing 21; and / or the housing 10 is provided with a plurality of flow blocking parts 30, and the plurality of flow blocking parts 30 are arranged at intervals along the rotation direction of the air supply housing 21. Such an arrangement further increases the resistance to the gas flowing from the gap.

[0041] It should be noted that the plurality of flow blocking parts 30 includes an embodiment in which two flow blocking parts 30 are provided.

[0042] In this embodiment, the flow blocking portion 30 is a groove structure or a tooth structure.

[0043] In this embodiment, the air supply shell 21 includes a volute 214 and a volute tongue 215, and an air duct 211, an air inlet 212 and an air supply outlet 213 are formed between the volute 214 and the volute tongue 215; wherein the fan blade 22 rotates around its rotation axis 221, and the air supply assembly 20 or the air supply shell 21 rotates around the rotation axis 221.

[0044] Specifically, the air supply assembly 20 or the air supply housing 21 rotates clockwise or counterclockwise around the rotation axis 221 . The volute 214 and the volute tongue 215 are arranged on opposite sides of the fan blade 22 .

[0045] In this embodiment, the housing 10 includes a first housing portion 11 , at least a portion of the volute 214 is disposed opposite to the first housing portion 11 , and the volute 214 is provided with a flow blocking portion 30 ; and / or the first housing portion 11 is provided with a flow blocking portion 30 .

[0046] Specifically, the volute 214 forms a first outer contour surface 216; or, the volute 214 and the flow blocking portion 30 jointly form the first outer contour surface 216; the first housing portion 11 forms a first contour surface 111; or, the first housing portion 11 and the flow blocking portion 30 jointly form the first contour surface 111; wherein the first outer contour surface 216 is arranged opposite to and spaced from the first contour surface 111. Such an arrangement avoids interference when the air supply assembly 20 or the air supply housing 21 rotates.

[0047] It should be noted that when the volute 214 is not provided with the flow blocking portion 30, the volute 214 alone forms the first outer contour surface 216; when the volute 214 is provided with the flow blocking portion 30, the volute 214 and the flow blocking portion 30 jointly form the first outer contour surface 216; when the first housing portion 11 is not provided with the flow blocking portion 30, the first housing portion 11 alone forms the first contour surface 111; when the first housing portion 11 is provided with the flow blocking portion 30, the first housing portion 11 and the flow blocking portion 30 jointly form the first contour surface 111. In this embodiment, the first outer contour surface 216 is a partial arc surface of the first cylindrical surface, and the center line of the first cylindrical surface coincides with the rotation axis 221; the first contour surface 111 is a partial arc surface of the third cylindrical surface, and the center line of the third cylindrical surface coincides with the rotation axis 221. Such a setting can keep the gap between the volute 214 and the first housing portion 11 unchanged when relative motion occurs, so that the air supply device can rotate smoothly without interference.

[0048] Preferably, the distance between the first outer contour surface 216 and the first contour surface 111 is d1, wherein 0.02R≤d1≤0.2R, and R is the radius of the fan blade 22. Such a configuration reduces the backflow of air from the air supply port to the air inlet.

[0049] Optionally, the radius of the first cylindrical surface is R1; wherein, 1.01R ≤ R1 ≤ 1.5R, and R is the radius of the wind blade 22. Such a setting ensures a reasonable gap between the volute 214 and the wind blade 22, ensuring a reasonable layout of the two.

[0050] Optionally, the distance between the first outer contour surface 216 and the first contour surface 111 is d1; the flow blocking portion 30 is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or, the flow blocking portion 30 is a tooth-shaped structure, and the distance between two adjacent tooth-shaped structures is L, and the height of the tooth-shaped structure is H; wherein, L > 2d1, H < L. Such a setting can effectively increase the resistance of the gas flowing through the gap, thereby reducing the backflow of the air supply device.

[0051] In another embodiment, the volute 214 has a plurality of first outer contour surfaces 216, and the plurality of first outer contour surfaces 216 are sequentially arranged along the rotation direction of the air supply housing 21; the first housing portion 11 has a plurality of first contour surfaces 111, and the plurality of first contour surfaces 111 are sequentially arranged along the rotation direction of the air supply housing 21; the plurality of first outer contour surfaces 216 are arranged in one-to-one correspondence with the plurality of first contour surfaces 111, and each first outer contour surface 216 is disposed opposite to the corresponding first contour surface 111; wherein, the radii of the first cylindrical surfaces corresponding to the respective first outer contour surfaces 216 are different, and the radii of the third cylindrical surfaces corresponding to the respective first contour surfaces 111 are different. Such a setting enables the air supply assembly 20 to adapt to the structures of different outer casings 10.

[0052] In this embodiment, the outer casing 10 includes a second housing portion 12, at least a part of the volute tongue 215 is disposed opposite to the second housing portion 12, and the volute tongue 215 is provided with a flow blocking portion 30; and / or, the second housing portion 12 is provided with a flow blocking portion 30.

[0053] Specifically, the volute tongue 215 forms a second outer contour surface 217; or, the volute tongue 215 and the flow blocking portion 30 jointly form a second outer contour surface 217; the second housing portion 12 forms a second contour surface 121; or, the second housing portion 12 and the flow blocking portion 30 jointly form a second contour surface 121; wherein, the second outer contour surface 217 is disposed opposite to and spaced apart from the second contour surface 121. Such a setting avoids interference when the air supply assembly 20 or the air supply housing 21 rotates.

[0054] It should be noted that when the baffle portion 30 is not provided on the volute tongue 215, the volute tongue 215 alone forms the second outer contour surface 217; when the baffle portion 30 is provided on the volute tongue 215, the volute tongue 215 and the baffle portion 30 together form the second outer contour surface 217; when the baffle portion 30 is not provided on the second housing portion 12, the second housing portion 12 forms the second contour surface 121; when the baffle portion 30 is provided on the second housing portion 12, the second housing portion 12 and the baffle portion 30 together form the second contour surface 121.

[0055] In this embodiment, the second outer contour surface 217 is a partial arc surface of the second cylindrical surface, and the center line of the second cylindrical surface coincides with the rotation axis 221; the second contour surface 121 is a partial arc surface of the fourth cylindrical surface, and the center line of the fourth cylindrical surface coincides with the rotation axis 221. Such a setting can keep the gap between the volute 214 and the first housing portion 11 unchanged when they move relative to each other, enabling the air supply device to rotate smoothly without interference.

[0056] Preferably, the distance between the second outer contour surface 217 and the second contour surface 121 is d2; where 0.02R ≤ d2 ≤ 0.2R, and R is the radius of the wind blade 22. Such a setting reduces the backflow of the air flow from the air outlet to the air inlet.

[0057] It should be noted that since d1 and d2 are small, the resistance of the backflow air flow is increased, reducing the backflow; the smaller the gap, the smaller the backflow, but it will increase the precision requirements for production and manufacturing.

[0058] Optionally, the radius of the second cylindrical surface is R2; where 1.01R ≤ R2 ≤ 1.5R, and R is the radius of the wind blade 22. Such a setting ensures a reasonable gap between the volute 214 and the wind blade 22, ensuring a reasonable layout of the two.

[0059] Optionally, the distance between the second outer contour surface 217 and the second contour surface 121 is d2; the baffle portion 30 is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or, the baffle portion 30 is a toothed structure, the distance between two adjacent toothed structures is L, and the height of the toothed structure is H; where L > 2d2 and H < L. Such a setting can effectively increase the resistance of the gas flowing through the gap, thereby reducing the backflow of the air supply device.

[0060] In another embodiment, the volute tongue 215 has a plurality of second outer contour surfaces 217, which are sequentially arranged along the rotation direction of the air supply housing 21; the second housing portion 12 has a plurality of second contour surfaces 121, which are sequentially arranged along the rotation direction of the air supply housing 21; the plurality of second outer contour surfaces 217 are arranged one-to-one with the plurality of second contour surfaces 121, and each second outer contour surface 217 is arranged relative to the corresponding second contour surface 121; wherein the radius of the second cylindrical surface corresponding to each second outer contour surface 217 is different, and the radius of the fourth cylindrical surface corresponding to each second contour surface 121 is different. Such an arrangement enables the air supply assembly 20 to adapt to different structures of the housing 10.

[0061] In this embodiment, the air supply device further includes a first driving member, which is connected to the fan blade 22 to drive the fan blade 22 to rotate. Specifically, the first driving member drives the fan blade 22 to rotate at a high speed, so that the gas enters and flows out of the air supply device. Optionally, the first driving member is a motor.

[0062] In this embodiment, the air supply device further includes a second driving member, which is connected to the air supply assembly 20 or the air supply housing 21 to drive the air supply assembly 20 or the air supply housing 21 to rotate. Specifically, the second driving member drives the air supply assembly 20 or the air supply housing 21 to rotate, so that the air outlet direction of the air supply device changes. Optionally, the second driving member is a motor.

[0063] Specifically, the air supply device further includes a transmission mechanism, and the second driving member is connected to the air supply assembly 20 or the air supply housing 21 through the transmission mechanism to drive the air supply assembly 20 or the air supply housing 21 to rotate.

[0064] Optionally, the air supply assembly 20 is a cross-flow fan or a centrifugal fan.

[0065] In this embodiment, the controller controls the first driving member to drive the fan blades to rotate at high speed, so that the gas flows into and out of the air supply device; the second driving member drives the air supply component 20 or the air supply shell 21 to rotate at a low speed, and the air supply component 20 or the air supply shell 21 can rotate forward or reverse or stop at a set position, thereby changing the air supply direction of the air supply device.

[0066] Specifically, the fan blade 22 and the air supply shell 21 are assembled on the corresponding bearing seats of the shell, the first driving member is fixed on the shell and the output shaft is connected to the fan blade 22, and the second driving member is fixed on the shell and the output shaft is connected to the air supply shell 21 through a transmission mechanism or directly.

[0067] During specific implementation, the performance of the fan is reduced due to the presence of a return flow channel with matching gaps d1 and d2 between the air inlet and the air supply port. By setting the baffle 30, the flow area changes when the airflow flows through the baffle 30. When entering the slot chamber (i.e., the groove structure or the depression formed between two adjacent tooth structures) from the return flow channel, the flow area changes from small to large, the flow velocity decreases, and the width of the streamline bundle increases from b1 to b2; when entering the return flow channel from the slot chamber, the flow area changes from large to small, the flow velocity increases, and the width of the streamline bundle decreases from b2 to b1. This change in the flow velocity of the fluid produces energy loss, forming a resistance that hinders the flow of the airflow; on the other hand, the airflow forms a vortex in the slot chamber, the vortex consumes the energy of the fluid, and the vortex disturbs the return flow channel, affecting the change in the width of the streamline bundle, thereby changing the airflow velocity in the return flow channel. Therefore, the baffle 30 is provided to form a vortex in the maze, which can increase the resistance of the gas flowing through the gap between the air supply shell 21 and the outer shell 10, thereby reducing the backflow of the air supply device and improving the performance of the air supply device.

[0068] The present invention also provides an air conditioner indoor unit, please refer to Figure 3 , including an air supply device, wherein the air supply device is the air supply device in the above embodiment.

[0069] Specifically, the housing 10 of the air supply device includes a bottom case 4 of the air conditioner indoor unit, a panel 3 and a panel body.

[0070] Specifically, the air-conditioning indoor unit further includes a heat exchanger 2 and a filter 5 .

[0071] The beneficial effects of the present application are: increasing the air volume of the air conditioner, improving the heat exchange efficiency of the heat exchanger, and improving the performance of the air conditioner; reducing the aerodynamic noise during the air supply process, making the user experience of the air conditioner more comfortable. Since there is no air guide plate blocking the air outlet during the air sweeping process of the air supply device, the air outlet is smoother, the wind resistance is smaller, the air volume attenuation is smaller, and the vortex of the air supply flow is reduced, solving the problems of reduced air volume and aerodynamic noise in the prior art.

[0072] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0073] The air supply device of the present invention changes the air supply direction of the air supply port 213 by rotating the air supply component 20 or the air supply shell 21, thereby realizing upward and downward air supply of the air supply device, eliminating the air guide plate 1 set at the air supply port in the prior art, changing the method of changing the air supply direction by the air guide plate 1 in the prior art, thereby solving the problem that the air volume is reduced and the air conditioning performance is reduced due to the setting of the air guide plate 1, and also solving the problem of aerodynamic noise caused by the upward and downward air supply of the air guide plate 1; and, a baffle 30 is provided in the gap between the air supply shell 21 and the outer shell 10 of the air supply device, when the air supply component 20 or the air supply shell 21 rotates, the air flow forms a vortex when flowing through the baffle 30, thereby increasing the resistance of the gas flowing from the gap, thereby reducing the backflow of the air supply device, and further increasing the air volume of the air supply device.

[0074] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air supply device, characterized in that: The invention comprises a housing (10) and an air supply assembly (20), wherein at least a portion of the air supply assembly (20) is arranged in the housing (10); the air supply assembly (20) comprises: An air supply housing (21), wherein the air supply housing (21) forms an air duct (211) and an air inlet (212) and an air supply outlet (213) connected to the air duct (211); a fan blade (22), at least a portion of the fan blade (22) being disposed in the air duct (211), and the fan blade (22) being rotatably disposed so that the gas entering the air duct (211) through the air inlet (212) flows out through the air supply port (213); The air supply assembly (20) or the air supply housing (21) is rotatably arranged to change the air supply direction of the air supply port (213); a flow blocking portion (30) is arranged in the gap between the air supply housing (21) and the housing (10); The air supply housing (21) comprises a volute (214) and a volute tongue (215), and the air duct (211), the air inlet (212) and the air supply port (213) are formed between the volute (214) and the volute tongue (215); The housing (10) comprises a first housing portion (11), and at least a portion of the volute (214) is arranged opposite to the first housing portion (11); the volute (214) is provided with the flow blocking portion (30), and / or the first housing portion (11) is provided with the flow blocking portion (30); The volute (214) forms a first outer contour surface (216), or the volute (214) and the flow blocking portion (30) together form the first outer contour surface (216); The first shell portion (11) forms a first contour surface (111), or the first shell portion (11) and the flow blocking portion (30) jointly form the first contour surface (111); The first outer contour surface (216) and the first contour surface (111) are arranged opposite to each other and are spaced apart from each other.

2. The air supply device according to claim 1, characterized in that: The flow blocking portion (30) is arranged on the air supply housing (21); and / or The flow blocking portion (30) is arranged on the housing (10).

3. The air supply device according to claim 1, characterized in that: The air supply housing (21) is provided with a plurality of the flow blocking parts (30), and the plurality of the flow blocking parts (30) are arranged at intervals along the rotation direction of the air supply housing (21); and / or The housing (10) is provided with a plurality of flow blocking parts (30), and the plurality of flow blocking parts (30) are arranged at intervals along the rotation direction of the air supply housing (21).

4. The air supply device according to claim 1, characterized in that: The flow blocking portion (30) is a groove structure; or The flow blocking portion (30) is a tooth-shaped structure.

5. The air supply device according to any one of claims 1 to 4, characterized in that: The fan blade (22) rotates around its rotation axis (221), and the air supply component (20) or the air supply housing (21) rotates around the rotation axis (221).

6. The air supply device according to claim 5, characterized in that: The first outer contour surface (216) is a partial arc surface of a first cylindrical surface, and the center line of the first cylindrical surface coincides with the rotation axis (221); the first contour surface (111) is a partial arc surface of a third cylindrical surface, and the center line of the third cylindrical surface coincides with the rotation axis (221).

7. The air supply device according to claim 6, characterized in that: The distance between the first outer contour surface (216) and the first contour surface (111) is d1; wherein 0.02R≤d1≤0.2R, and R is the radius of the fan blade (22).

8. The air supply device according to claim 6, characterized in that: The radius of the first cylindrical surface is R1; wherein 1.01R≤R1≤1.5R, and R is the radius of the fan blade (22).

9. The air supply device according to claim 6, characterized in that: The distance between the first outer contour surface (216) and the first contour surface (111) is d1; The flow blocking portion (30) is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or The flow blocking portion (30) is a tooth-shaped structure, the distance between two adjacent tooth-shaped structures is L, and the height of the tooth-shaped structure is H; Among them, L>2d1, H <L。 10. The air supply device according to claim 6, characterized in that: The volute (214) has a plurality of first outer contour surfaces (216), and the plurality of first outer contour surfaces (216) are arranged in sequence along the rotation direction of the air supply housing (21); the first housing portion (11) has a plurality of first contour surfaces (111), and the plurality of first contour surfaces (111) are arranged in sequence along the rotation direction of the air supply housing (21); the plurality of first outer contour surfaces (216) and the plurality of first contour surfaces (111) are arranged in one-to-one correspondence, and each first outer contour surface (216) is arranged opposite to the corresponding first contour surface (111); The radii of the first cylindrical surfaces corresponding to the first outer contour surfaces (216) are different, and the radii of the third cylindrical surfaces corresponding to the first contour surfaces (111) are different.

11. The air supply device according to claim 5, characterized in that: The housing (10) comprises a second housing portion (12), at least a portion of the volute tongue (215) is arranged opposite to the second housing portion (12), and the volute tongue (215) is provided with the flow blocking portion (30); and / or the second housing portion (12) is provided with the flow blocking portion (30); The volute tongue (215) forms a second outer contour surface (217); or, the volute tongue (215) and the flow blocking portion (30) together form the second outer contour surface (217); The second shell portion (12) forms a second contour surface (121); or the second shell portion (12) and the flow blocking portion (30) together form the second contour surface (121); Wherein, the second outer contour surface (217) and the second contour surface (121) are arranged opposite to each other and spaced apart.

12. The air supply device according to claim 11, characterized in that: The second outer contour surface (217) is a partial arc surface of a second cylindrical surface, and the center line of the second cylindrical surface coincides with the rotation axis (221); the second contour surface (121) is a partial arc surface of a fourth cylindrical surface, and the center line of the fourth cylindrical surface coincides with the rotation axis (221).

13. The air supply device according to claim 12, characterized in that: The distance between the second outer contour surface (217) and the second contour surface (121) is d2; wherein 0.02R≤d2≤0.2R, and R is the radius of the fan blade (22).

14. The air supply device according to claim 12, characterized in that: The radius of the second cylindrical surface is R2; wherein 1.01R≤R2≤1.5R, and R is the radius of the fan blade (22).

15. The air supply device according to claim 12, characterized in that: The distance between the second outer contour surface (217) and the second contour surface (121) is d2; The flow blocking portion (30) is a groove structure, the width of the groove structure is L, and the depth of the groove structure is H; or The flow blocking portion (30) is a tooth-shaped structure, the distance between two adjacent tooth-shaped structures is L, and the height of the tooth-shaped structure is H; Among them, L>2d2, H <L。 16. The air supply device according to claim 12, characterized in that: The volute tongue (215) has a plurality of second outer contour surfaces (217), and the plurality of second outer contour surfaces (217) are arranged in sequence along the rotation direction of the air supply housing (21); the second housing portion (12) has a plurality of second contour surfaces (121), and the plurality of second contour surfaces (121) are arranged in sequence along the rotation direction of the air supply housing (21); the plurality of second outer contour surfaces (217) and the plurality of second contour surfaces (121) are arranged in one-to-one correspondence, and each second outer contour surface (217) is arranged opposite to the corresponding second contour surface (121); The radii of the second cylindrical surfaces corresponding to the second outer contour surfaces (217) are different, and the radii of the fourth cylindrical surfaces corresponding to the second contour surfaces (121) are different.

17. An air conditioner indoor unit, comprising an air supply device, characterized in that: The air supply device is the air supply device according to any one of claims 1 to 16.

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