CN111442387A

CN111442387A - Wall-mounted air conditioner indoor unit

Info

Publication number: CN111442387A
Application number: CN201910045433.1A
Authority: CN
Inventors: 关婷婷; 王永涛; 李英舒; 王晓刚; 单翠云; 张蕾; 杜亮
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd; Chongqing Haier Air Conditioner Co Ltd
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2020-07-24
Anticipated expiration: 2039-01-17
Also published as: CN111442387B

Abstract

The invention provides a wall-mounted air conditioner indoor unit. Wherein the wall-mounted air conditioner indoor unit includes: a cavity is defined in the shell, the shell comprises a front panel and a rear shell, and the rear shell is provided with an air inlet; the first air duct and the second air duct are respectively limited with a first air outlet and a second air outlet which are forward; the evaporator is configured to exchange heat for air entering the cavity through the air inlet; and the laminar flow fan is configured to enable air subjected to heat exchange through the evaporator to form laminar flow air by utilizing a viscosity effect, and the laminar flow air is blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct. The wall-mounted air conditioner indoor unit realizes up-and-down air outlet through only one laminar flow fan, so that the occupied area and the overall cost of the fan can be reduced while the air quantity loss is effectively reduced. In addition, laminar flow fan realizes the laminar flow air supply through the viscidity effect, and air supply process noise is little, the amount of wind is high, effectively promotes user's use and experiences.

Description

Wall-mounted air conditioner indoor unit

Technical Field

The invention relates to the technical field of household appliances, in particular to an indoor unit of a wall-mounted air conditioner.

Background

With the development of society and the increasing living standard of people, various air conditioning devices have become one of the indispensable electrical devices in people's daily life. Various air conditioning devices can help people to reach a temperature that can be adapted to when the ambient temperature is too high or too low.

The existing air conditioner adjusting device mainly comprises various types of air conditioners and fans, and because the indoor unit of the wall-mounted air conditioner is generally hung on the wall of a room and does not need to occupy the space at the bottom of the room, the air conditioner adjusting device is more and more widely applied. However, the indoor unit of the current wall-mounted air conditioner mainly adopts a cross-flow fan to supply air, and the cross-flow fan often has the following problems: the air outlet direction is right ahead, although the left and right flow guide of the swing blade is provided, the upper and lower flow guide of the air deflector is limited by the volute structure, the left and right air supply angle is less than 80 degrees, and the upper and lower air supply angle is less than 100 degrees, so the air supply range is very limited; due to the long strip-shaped air outlet form, the air quantity is concentrated, so that the air speed is high, the air is difficult to avoid people, and the phenomenon that the air is blown directly to people is serious; the conventional cross-flow fan mainly comprises forward blades, the blades periodically impact passing air flow to generate obvious rotating noise, the volute is matched with the cross-flow fan to achieve an air supply effect, the front volute tongue and the rear volute tongue can impact the air flow to generate strong turbulence noise, and the noise value is close to the limit under the limitation of performance indexes.

Disclosure of Invention

The invention aims to provide a wall-mounted air conditioner indoor unit with low air volume loss and low cost.

A further object of the present invention is to provide a wall-mounted air conditioner that provides a more uniform temperature in the environment in which the indoor unit is located.

In particular, the present invention provides a wall-mounted type air conditioner indoor unit, comprising: the air conditioner comprises a shell, a front panel, a rear shell and a fan, wherein a cavity is defined in the shell; the first air duct and the second air duct are respectively limited with a first air outlet and a second air outlet which are forward; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet; and the laminar flow fan is arranged in the cavity and positioned on the front side of the evaporator, is configured to enable air subjected to heat exchange by the evaporator to form laminar flow air by utilizing a viscosity effect, and is blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct.

Optionally, the laminar flow fan comprises a laminar flow fan and a drive motor, wherein the laminar flow fan comprises: the annular disks are arranged in parallel at intervals and have the same central axis, the centers of the annular disks form an air inlet channel together, and air subjected to heat exchange of the evaporator enters gaps among the annular disks through the air inlet channel; the drive motor is configured to: and driving the plurality of annular disks to rotate so as to enable the air boundary layer close to the surfaces of the plurality of annular disks to rotate and move from inside to outside, thereby forming laminar air blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct.

Optionally, the wall-mounted air conditioner indoor unit further comprises: the first guard plate is in threaded connection with the front side of the driving motor; the volute is fixed with the first guard plate, a laminar flow fan is arranged in the volute, and the volute is provided with an outlet; the rotating motor is provided with a plurality of clamping jaws, the first protection plate is fixed with the plurality of clamping jaws, the rotating motor is configured to drive the first protection plate and the volute to rotate, and when the volute rotates to an outlet and is communicated with the first air channel, laminar air formed by the laminar flow fan enters the first air channel; when the volute rotates to the outlet and is communicated with the second air channel, laminar air formed by the laminar flow fan enters the second air channel; and a second guard plate screwed to the front side of the rotating motor, and the second guard plate is fixed to the front panel.

Optionally, the rear housing includes a rear panel, a top plate, a bottom plate, and two side panels, the air inlet is disposed on the rear panel, and a protrusion is disposed at a rear portion of the rear panel, so as to hang the wall-mounted air conditioner indoor unit on a wall, and a gap is formed between the rear panel and the wall, so that air can be introduced from the air inlet.

Optionally, the laminar flow fan further comprises: the driving discs are arranged on one side of the plurality of annular discs in parallel at intervals; and a connection member penetrating the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk, the drive motor further configured to: the driving disc is directly driven to rotate, and the driving disc drives the annular discs to rotate.

Optionally, a groove is formed in the center of the driving disk toward the plurality of annular disks, and the driving motor is fixedly disposed in the groove.

Optionally, the surface of the drive disk facing the drive motor is planar and the surface facing the plurality of annular disks has conically shaped protrusions to direct the flow of air entering the laminar flow fan and assist in creating laminar air flow.

Optionally, the connecting piece is a connecting piece, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves is in a linear relation with the air quantity generated by the laminar flow fan.

Optionally, the cross section of the connecting piece has double circular arcs arranged in sequence along the direction of rotation of the annular disk: the inner arc and the back arc are both raised towards the rotating direction of the annular disk, and have the same circle center and are arranged in parallel or have different circle centers and are intersected at two ends.

Optionally, the plurality of annular disks are arranged according to one or more of the following structures: the inner diameters of the annular disks are gradually reduced from one side far away from the driving disk to the other side; the distance between two adjacent annular disks in the plurality of annular disks is gradually increased from one side far away from the driving disk to the other side; each annular disc is an arc disc which is gradually close to the driving disc from the center to the edge and protrudes towards one side of the driving disc.

The wall-mounted air conditioner indoor unit of the invention comprises: the air conditioner comprises a shell, a front panel, a rear shell and a fan, wherein a cavity is defined in the shell; the first air duct and the second air duct are respectively limited with a first air outlet and a second air outlet which are forward; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet; and the laminar flow fan is arranged in the cavity and positioned on the front side of the evaporator, is configured to enable air subjected to heat exchange by the evaporator to form laminar flow air by utilizing a viscosity effect, and is blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct. The wall-mounted air conditioner indoor unit realizes up-down air outlet through only one laminar flow fan, so that the occupied area and the overall cost of the fan can be reduced while the air quantity loss is effectively reduced. In addition, laminar flow fan realizes the laminar flow air supply through the viscidity effect, and air supply process noise is little, the amount of wind is high, effectively promotes user's use and experiences.

Further, the wall-mounted air conditioner indoor unit of the present invention further comprises: the first guard plate is in threaded connection with the front side of the driving motor; the volute is fixed with the first guard plate, a laminar flow fan is arranged in the volute, and the volute is provided with an outlet; the rotating motor is provided with a plurality of clamping jaws, the first protection plate is fixed with the plurality of clamping jaws, the rotating motor is configured to drive the first protection plate and the volute to rotate, and when the volute rotates to an outlet and is communicated with the first air channel, laminar air formed by the laminar flow fan enters the first air channel; when the volute rotates to the outlet and is communicated with the second air channel, laminar air formed by the laminar flow fan enters the second air channel; and a second guard plate screwed to the front side of the rotating motor, and the second guard plate is fixed to the front panel. The volute can rotate in a working mode matched with an indoor unit of the wall-mounted air conditioner, for example, when refrigeration is carried out, the volute can rotate to an outlet and is communicated with the first air channel, laminar air formed by the laminar flow fan enters the first air channel and is blown out through a first air outlet in the upper part, and air is blown upwards in a ceiling type; and when heating, the spiral case can rotate to export and second wind channel intercommunication, and the laminar flow wind that the laminar flow fan formed gets into the second wind channel and blows out through the second air outlet of lower part, forms down to blow the carpet formula air supply, and the air-out mode makes the temperature of wall-hanging air conditioner indoor set place environment more even.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view illustrating an overall structure of a wall-mounted type air conditioner indoor unit according to an embodiment of the present invention;

fig. 2 is an exploded view of the components of the wall-mounted air conditioner indoor unit of fig. 1;

fig. 3 is a schematic partially exploded view of the indoor unit of the wall-mounted air conditioner of fig. 1;

fig. 4 is a schematic view illustrating an air circulation of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating the blowing principle of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

fig. 6 is a graph illustrating a speed profile and a force profile of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a laminar flow fan with a drive disk having a groove;

FIG. 8 is a schematic view of the laminar flow fan of FIG. 7 from another perspective;

FIG. 9 is a schematic view of the laminar flow fan of FIG. 7 from a further perspective;

FIG. 10 is a cross-sectional view of the laminar flow fan of FIG. 7;

FIG. 11 is a schematic view of the connection of a laminar flow fan having a drive disk with a conical projection to a drive motor;

FIG. 12 is a schematic view of the laminar flow fan of FIG. 11 from another perspective;

FIG. 13 is a cross-sectional schematic view of the laminar flow fan of FIG. 11;

FIG. 14 is a schematic diagram of the relationship between the length of the string line of the connecting piece in FIG. 13 and the wind quantity and pressure;

FIG. 15 is a schematic view showing the relationship between the installation angle of the connecting piece of FIG. 13 and the air volume and the air pressure;

FIG. 16 is a cross-sectional schematic view of a laminar flow fan having aero blades;

FIG. 17 is a schematic view of the aero blade installation angle of the laminar flow fan of FIG. 16 in relation to air flow and wind pressure;

FIG. 18 is a schematic view of the connection of a laminar flow fan with gradually changing spacing between a plurality of annular disks to a drive motor;

FIG. 19 is a schematic view of the laminar flow fan of FIG. 18 coupled to a drive motor from another perspective;

FIG. 20 is a schematic diagram of the gradual change in the pitch of a plurality of annular disks of the laminar flow fan of FIG. 18 as a function of air flow and air pressure;

FIG. 21 is a partial cross-sectional view of a laminar flow fan with a gradual change in the inner diameter of a plurality of annular disks;

FIG. 22 is a schematic diagram of the inner diameter gradient of the multiple annular disks of the laminar flow fan of FIG. 21 in relation to the air flow and the air pressure;

FIG. 23 is a schematic view of a central angle of a connecting line of an inner diameter and an outer diameter of a plurality of annular disks of a laminar flow fan in which the annular disks are arc-shaped disks on the same longitudinal section passing through the central axis; and

fig. 24 is a schematic diagram showing the relationship between the central angle and the air volume and the wind pressure in fig. 23.

Detailed Description

The embodiment provides a wall-mounted air conditioner indoor unit, can realize the upper and lower formula air-out through only a fan, can reduce the area occupied and the whole cost of fan when effectively reducing the amount of wind loss. The laminar flow fan that sets up realizes the laminar flow air supply through the viscidity effect, and air supply process noise is little, the amount of wind is high, effectively promotes user's use and experiences. Fig. 1 is a schematic view illustrating an overall structure of a wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention; fig. 2 is an exploded view of the components of the wall-mounted air conditioner indoor unit 300 of fig. 1; fig. 3 is a partially exploded view of the wall-mounted air conditioner indoor unit 300 of fig. 1. Fig. 4 is a schematic view illustrating air circulation of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention, fig. 5 is a schematic view illustrating an air blowing principle of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention, and fig. 6 is a velocity profile and a force profile of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention. Fig. 7 is a structural view of a laminar flow fan 100 having grooves 32 in a driving disk 30, fig. 8 is a structural view of the laminar flow fan 100 in fig. 7 from another view, fig. 9 is a structural view of the laminar flow fan 100 in fig. 7 from another view, and fig. 10 is a sectional view of the laminar flow fan 100 in fig. 7. As shown in fig. 1 to 4, the wall-mounted air conditioner indoor unit 300 may generally include: a housing 310, first and

second air ducts

811 and 812, an evaporator 382, and a laminar flow fan 110.

Wherein, the inside of the housing 310 defines a cavity, the housing 310 includes a front panel 311 and a rear case 312, and the rear case 312 is provided with an air inlet 330. The air inlet 330 may be provided in the form of an air inlet grill, which can suck indoor air into the cavity through different directions and filter the air. As shown in fig. 2, the rear casing 312 may include a rear panel 315, a top panel 313, a bottom panel 314, and two side panels 316, and the intake vent 330 may be disposed at the rear panel 315. The rear portion of the rear panel 315 is provided with a protrusion 740 to hang the wall-mounted air conditioner indoor unit 300 on the wall, and a gap is formed between the rear panel 315 and the wall, so that air can be introduced from the air inlet 330.

The first and

second wind tunnels

811 and 812 define the first and

second air outlets

321 and 322, respectively, facing forward. In a preferred embodiment, the first outlet 321 and the second outlet 322 are respectively located above and below the front panel 311. As shown in fig. 1 and 2, the first air duct 811 and the top plate 313 collectively define a first air outlet 321; the second air duct 812 and the bottom plate 314 together define the second air outlet 322.

The evaporator 382 may be disposed inside the cavity corresponding to the intake vent 330 and configured to exchange heat with air entering the cavity through the intake vent 330. Wherein the evaporator 382 may have a flat plate shape and be disposed in parallel with the rear panel 315. A water receiving tray (not shown) may be disposed below the evaporator 382 to receive the condensed water generated from the evaporator 382. The laminar flow fan 110 is disposed inside the cavity and in front of the evaporator 382, and configured to utilize a viscous effect to make the air heat exchanged by the evaporator 382 form laminar flow air, and the laminar flow air is blown out from the first air outlet 321 through the first air duct 811 and/or blown out from the second air outlet 322 through the second air duct 812.

The laminar flow fan 110 includes a laminar flow fan 100 and a driving motor 20. Wherein laminar flow fan 100 includes: the plurality of annular disks 10 are arranged in parallel at intervals and have the same central axis, the centers of the plurality of annular disks 10 jointly form an air inlet channel 11, and air subjected to heat exchange in the evaporator 382 enters gaps among the plurality of annular disks 10 through the air inlet channel 11. The driving motor 20 is configured to drive the plurality of annular disks 10 to rotate, so that the air boundary layer 13 near the surfaces of the plurality of annular disks 10 moves from inside to outside in a rotating manner, thereby forming laminar air blown out from the first air outlet 321 through the first air duct 811 and/or blown out from the second air outlet 322 through the second air duct 812. It should be noted that, the plurality of annular disks 10 of the laminar flow fan 100 of the present embodiment are all disposed parallel to the rear panel 315, that is, the air inlet channel 11 is perpendicular to the rear panel 315.

Specifically, the driving motor 20 drives the plurality of annular disks to rotate, so that the plurality of annular disks contact with air between each other and move with each other, and the air boundary layer 13 close to the surfaces of the plurality of annular disks is driven by the plurality of rotating annular disks to rotate from inside to outside due to the viscous effect to form laminar air. A plurality of air outlets 12 are formed in gaps among the plurality of annular disks, and each air outlet 12 can supply air in 360 degrees.

The wall-mounted air conditioner indoor unit 300 may further include: a first guard plate 821, a volute 520, a rotating motor 823, and a second guard plate 822. The first cover plate 821 may be screwed to the front side of the driving motor 20 by a screw 825. The scroll 520 is fixed to the first guard plate 821, the laminar flow fan 110 is disposed inside the scroll 520, and the scroll 520 has an outlet 521. The rotating motor 823 is provided with a plurality of claws 824, the first guard plate 821 is fixed to the plurality of claws 824, and the rotating motor 823 is configured to drive the first guard plate 821 and the scroll casing 520 to rotate, and when the scroll casing 520 rotates to the outlet 521 and is communicated with the first air duct 811, laminar air formed by the laminar flow fan 110 enters the first air duct 811; when the scroll 520 rotates to the outlet 521 to communicate with the second air duct 812, the laminar air generated by the laminar flow fan 110 enters the second air duct 812. The second cover 822 is screwed to the front side of the rotating motor 823, and the second cover 822 may be fixed to the front panel 311.

The scroll 520 may be rotated continuously or may be stopped when the rotation is stopped in a certain state. In a preferred embodiment, the spiral casing 520 can rotate in a mode matching with the operation mode of the wall-mounted air conditioner indoor unit 300, for example, during cooling, the spiral casing 520 can rotate until the outlet 521 is communicated with the first air duct 811, and laminar air generated by the laminar flow fan 110 enters the first air duct 811 and is blown out through the first air outlet 321 at the upper part, so as to generate ceiling-type upward blowing air; during heating, the spiral case 520 may rotate to the outlet 521 to communicate with the second air duct 812, and the laminar air generated by the laminar flow fan 110 enters the second air duct 812 and is blown out through the second air outlet 322 at the lower portion to generate downward blowing carpet type air supply, which may make the temperature of the environment where the wall-mounted air conditioner indoor unit 300 is located more uniform.

As shown in fig. 4, the laminar flow fan 100 may further include: a drive disk 30 and a link. Wherein the driving disks 30 are spaced apart and arranged in parallel on one side of the plurality of annular disks 10. And a connecting member penetrating the drive disk 30 and the plurality of annular disks 10 to connect the plurality of annular disks 10 to the drive disk 30. As shown in fig. 7, the connector may be a connecting tab 40. The drive motor 20 may also be configured to: the driving disk 30 is directly driven to rotate, and the driving disk 30 drives the plurality of annular disks 10 to rotate. That is, the above-mentioned configuration of the driving motor 20 to drive the plurality of annular discs 10 to rotate depends on the driving motor 20 first driving the driving disc 30 to rotate, and then the driving disc 30 driving the plurality of annular discs 10 to rotate. In a specific embodiment, the radius of the drive disk 30 is the same as the outer diameter of the plurality of annular disks 10, and may be set in a certain range, for example, 170 mm to 180 mm, so as to constrain the occupied volume of the laminar flow fan 100 in the transverse direction, cooperatively define the number of annular disks 10 and the spacing between two adjacent annular disks 10, and constrain the thickness of the laminar flow fan 100 in the longitudinal direction, which may effectively constrain the entire occupied volume of the laminar flow fan 100. Note that, the inner diameter of the annular disk 10 refers to the radius of its inner circumference; the outer diameter refers to the radius of its outer circumference. The specific values of the outer diameter of the annular disk 10 are merely exemplary and are not intended to limit the present invention.

As shown in fig. 4, the centers of the plurality of annular disks 10 are collectively formed with an air inlet passage 11 for allowing air outside the laminar flow fan 100 to enter. A plurality of air discharge ports 12 are formed at gaps between the plurality of annular disks 10 to allow laminar air to be blown out. The process of laminar wind formed by the inward and outward rotating movement of the air boundary layer 13 is centrifugal movement, so that the speed of the air leaving the air outlet 12 is higher than that of the air entering the air inlet channel 11. The pressure difference between the air outlet 12 of the laminar flow fan 100 and the inlet of the air inlet channel 11 is wind pressure. The blowing principle of the laminar flow fan 100 is derived primarily from the "tesla turbine" found in nigula tesla. Tesla turbines mainly utilize the 'laminar boundary layer effect' or 'viscous effect' of the fluid to achieve the purpose of doing work on 'turbine disks'. In the laminar flow fan 100 of this embodiment, the driving disc 30 is driven by the driving motor 20, the driving disc 30 drives the plurality of annular discs 10 to rotate at a high speed, and the air in the spaces between the annular discs 10 contacts and moves with each other, so that the air boundary layer 13 near the surface of each annular disc 10 is driven by the rotating annular disc 10 to rotate from inside to outside due to the action of the viscous shear force τ, thereby forming laminar flow wind.

FIG. 6 is a schematic diagram showing the distribution τ (y) of the viscous shear force and the distribution u (y) of the velocity to which the boundary layer 13 of air is subjectedFigure (a). The viscous shear force experienced by the air boundary layer 13 is actually the resistance that each annular disk 10 generates to the air boundary layer 13. The axis of abscissa in fig. 6 refers to the distance in the moving direction of the air boundary layer 13, and the axis of ordinate refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. v. of_eThe velocity of the air flow at each point in the air boundary layer 13, the thickness of the air boundary layer 13, τ_wThe variables y in τ (y) and u (y) refer to the height of the cross-section of boundary layer 13 in the direction perpendicular to the direction of travel, L is the distance between a point on the inner circumference of annular disk 10 and a point on the surface of annular disk 10, then τ (y) is the distribution of viscous shear forces experienced at the height y of the cross-section of boundary layer 13 at this distance L, and u (y) is the velocity distribution at the height y of the cross-section of boundary layer 13 at this distance L.

As shown in fig. 7 to 10, the center of the driving disk 30 may be formed with a groove 32 toward the plurality of annular disks 10, and the driving motor 20 may be fixedly disposed in the groove 32. In another embodiment, fig. 11 is a schematic view of the connection between the laminar flow fan 100 with the circular disk 30 having the conical protrusions 31 and the driving motor 20, fig. 12 is a schematic view of the laminar flow fan 100 in fig. 11 from another view, and fig. 13 is a schematic view of the laminar flow fan 100 in fig. 11 in cross section. The surface of the driving disk 30 of the laminar flow fan 100 in fig. 11 to 13 facing the driving motor 20 is a plane, and the surface facing the plurality of annular disks 10 has a conical projection 31 to guide the flow of air entering the laminar flow fan 100 and assist in forming laminar flow wind.

The main function of the driving disc 30 is to fixedly receive the driving motor 20 and to be connected to the plurality of annular discs 10 through a connection member, so as to drive the plurality of annular discs 10 to rotate when the driving disc 30 is driven to rotate by the driving motor 20. With the laminar flow fan shown in fig. 11 to 13, since the surface of the drive disk 30 facing the drive motor 20 is a plane, the drive motor 20 is fixedly disposed on the plane side of the drive disk 30. The surface of the driving disk 30 of the laminar flow fan 100 shown in fig. 11 to 13 facing the plurality of annular disks 10 has the conical protrusions 31, which can effectively guide the air entering the laminar flow fan 100 through the air inlet channel 11 into the gaps between the annular disks 10, thereby improving the efficiency of forming laminar air.

In a preferred embodiment, the connecting member is a connecting piece 40, and the cross section of the connecting piece 40 has two curves sequentially arranged along the rotation direction of the annular disk 10, and the chord length of the two curves is in a linear relation with the air quantity generated by the laminar flow fan 100. The connecting plate 40 may be provided in plural and evenly spaced throughout the drive disk 30 and the plurality of annular disks 10. The connecting pieces 40 uniformly penetrate through the driving disk 30 and the annular disks 10 at intervals, so that the connection relationship between the driving disk 30 and the annular disks 10 is stable, and further, when the driving disk 30 is driven to rotate by the driving motor 20, the driving disk 30 can stably drive the annular disks 10 to rotate, and the working reliability of the laminar flow fan 100 is improved.

It should be noted that the two

curves

41 and 42 may be arcs, non-arcs, straight lines, etc., and the straight line may be a special curve. Where the distance between the two ends of the curve 41 is the same as the distance between the two ends of the curve 42, the chord line 51 length may be the distance between the two ends of the curve 41 or the curve 42. When the distance between the two end points of the curve 41 is different from the distance between the two end points of the curve 42, if the two ends of the curve 41 and the curve 42 are not intersected, the length of the chord line 51 can be the length of the connecting line of the middle points of the curves of the cross section of the connecting sheet 40 except the

curves

41 and 42; if only one end of the

curves

41 and 42 intersect, the chord line 51 length may be the length of the line connecting the midpoint of the curve of the cross-section of the connecting piece 40 excluding the

curves

41, 42 and the end point of the intersection.

As shown in fig. 13, the connecting piece 40 may be a double-arc blade 401 having a cross section having double arcs arranged in sequence in the direction in which the annular disk 10 rotates: the inner arc 41 and the back arc 42, and the inner arc 41 and the back arc 42 are both convex towards the rotating direction of the annular disk 10, have the same center and are arranged in parallel. Fig. 13 is a schematic cross-sectional view of laminar flow fan 100 viewed from above, in which drive motor 20 drives annular disk 10 to rotate clockwise, and back arcs 42 and inner arcs 41 project in the same direction as annular disk 10. In other embodiments, the driving motor 20 may also drive the annular disk 10 to rotate counterclockwise, and the protruding directions of the back arc 42 and the inner arc 41 may be opposite to those shown in fig. 13.

Fig. 14 is a schematic diagram showing the relationship between the length of the chord line 51 of the connecting sheet 40 in fig. 13 and the air volume and the air pressure. Since the connecting piece 40 of the laminar fan 100 in fig. 13 is a double-arc blade 401, the distance between the two ends of the inner arc 41 is the same as the distance between the two ends of the back arc 42, and the length of the chord line 51 may be the distance between the two ends of the inner arc 41 or the back arc 42. In fig. 14, the abscissa axis bladechard indicates the length of the chord line 51 of the connecting sheet 40 of the laminar flow fan 100, the left ordinate axis Mass flow rate indicates the air volume, and the right ordinate axis Pressure indicates the air Pressure. Specifically, fig. 14 is a schematic diagram showing the relationship between the length of the chord line 51 and the wind volume and the wind pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the installation angle of the connecting sheet 40, and the rotation speed of the driving motor 20 of the annular disk 10 of the laminar flow fan 100 are all kept constant. The mounting angle of the connecting piece 40 of the present embodiment may be: on the same cross section of the connecting sheet 40 and the annular disk 10, a chord line 51 between both ends of the inner arc 41 forms an angle with an outer diameter 52 of the annular disk 10 passing through a midpoint of the chord line 51.

When each of the above-mentioned parameters is kept constant, for example, in a preferred embodiment, the outer diameter of the ring-shaped disk 10 of the laminar fan 100 is 175 mm, the inner diameter of the ring-shaped disk 10 is 115 mm, the number of layers of the ring-shaped disks 10 is 8, the pitch of the ring-shaped disks 10 is 13.75 mm, the thickness of the ring-shaped disk 10 is 2 mm, the installation angle of the connecting piece 40 is 25.5 °, and the rotation speed of the driving motor 20 is 1000rpm, it can be found that after the length of the chord 51 is increased, both the air volume and the air pressure are greatly improved, and are substantially linear. Considering the limited space inherent in the wall-mounted air conditioner indoor unit 300, there is a certain constraint on the overall occupied volume of the laminar flow fan 100. When the outer diameter and the inner diameter of the annular disk 10 are constant, the longer the chord 51 is, the greater the air volume and the wind pressure of the laminar flow fan 100 are, but the length of the chord 51 is also restricted to a certain extent, so that the connecting piece 10 does not penetrate the annular disk 10 excessively, which leads to a decrease in the stability of the laminar flow fan 100. In summary, the length of the chord line 51 can be set to the maximum range that can be achieved, so that the air volume and the air pressure of the laminar flow fan 100 can meet the use requirements of users.

Thus, in the preferred embodiment described above, the chord line 51 length is set to the maximum range achievable while ensuring the stability of the laminar flow fan 100: 40 mm to 42 mm. When the length of the chord line 51 is set to 42 mm, the air volume of the laminar flow fan 100 may be 1741m³And h, the wind pressure can reach 118.9Pa, and the use requirements of users can be completely met. At this time, the difference between the outer diameter and the inner diameter of the annular disk 10 is 60 mm, and the length of the chord 51 is set to 42 mm, so that distances of about 9 mm are respectively reserved between the two ends of the inner arc 41 and the back arc 42 and the inner circumference and the outer circumference of the annular disk 10, and on the premise of ensuring the stability of the laminar flow fan 100, the length of the chord 51 is set to the maximum range, so that the air volume and the air pressure of the laminar flow fan 100 can meet the use requirements of users.

Fig. 15 is a schematic view of the relation between the installation angle α of the connecting piece 40 in fig. 13 and the air volume and the air Pressure, since the connecting piece 40 of the laminar fan 100 in fig. 13 may be a double-arc blade 401, the installation angle α of the connecting piece 40 actually means the angle formed by the chord line 51 between the two ends of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the double-arc blade 401 and the annular disk 10, the abscissa axis Metal angle (α) in fig. 15 means the installation angle of the double-arc blade 401 of the laminar fan 100, that is, the angle formed by the chord line 51 between the two ends of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the double-arc blade 401 and the annular disk 10, the left ordinate axis refers to the massflow rate, the right ordinate axis refers to the air Pressure, and specifically, fig. 15 shows that the relation between the outer diameter, the inner diameter, the chord length 401 of the double-arc blade 401, the rotational speed of the driving motor 20, and the linear arc angle 3642 may be the linear arc angle 401 of the straight line of the straight-arc blade.

In the case where each of the above-mentioned parameters is kept constant, for example, in a preferred embodiment, the outer diameter of the ring-shaped disk 10 of the laminar fan 100 is 175 mm, the inner diameter of the ring-shaped disk 10 is 115 mm, the number of layers of the ring-shaped disks 10 is 8, the pitch of the ring-shaped disks 10 is 13.75 mm, the thickness of the ring-shaped disk 10 is 2 mm, the chord length of the bi-arc blade 401 is 35 mm, the rotation speed of the drive motor 20 is 1000rpm (revolutions per minute), and the mounting angle α of the bi-arc blade 401 may be set to-5 ° to 55 ° in consideration of the total air volume and the wind pressure, it is noted that the mounting angle α is positive when the chord line 51 between the two ends of the inner arc 41 passes through the middle point of the chord line 51 in the direction of rotation of the ring-shaped disk 10, and the mounting angle α is positive when the chord line 51 between the two ends of the ring-shaped disk 10 passes through the middle point 51 of the chord line 51 in the direction of rotation of the ring-shaped disk 10.

FIG. 16 is a schematic cross-sectional view of a laminar flow fan 100 having an aero blade 402, and FIG. 17 is a schematic cross-sectional view of a mounting angle α of the aero blade 402 of the laminar flow fan 100 in FIG. 16 with respect to air volume and air pressure, in a specific embodiment, the connecting piece 40 may also be an aero blade 402. the cross-sectional view of the aero blade 402 has a double arc protruding in a direction of rotation of the annular disk 10, and the double arc includes an inner arc 41 and a back arc 42 sequentially arranged in a direction of rotation of the annular disk 10, the inner arc 41 and the back arc 42 having different centers and intersecting both ends, FIG. 16 shows a schematic cross-sectional view of the laminar flow fan 100 when the driving motor 20 drives the annular disk 10 to rotate clockwise, and the back arc 42 and the inner arc 41 protrude in a direction consistent with the direction of rotation of the annular disk 10. in other embodiments, the driving motor 20 may also drive the annular disk 10 to rotate while the protruding direction of the back arc 42 and the inner arc 41 may be opposite to that shown in.

The installation angle α of the aircraft blade 402 in fig. 17 actually refers to the angle formed by the chord line 51 between the two ends of the inner arc 41 or the back arc 42 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the aircraft blade 402 and the annular disk 10, the abscissa axis Metal angle (α) in fig. 17 refers to the installation angle of the aircraft blade 402 of the laminar fan 100, that is, the angle formed by the chord line 51 between the two ends of the inner arc 41 or the back arc 42 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the aircraft blade 402 and the annular disk 10, the left ordinate axis Mass flow rate refers to the air flow rate, and the right ordinate axis Pressure refers to Pressure, specifically, fig. 17 shows that the installation angle α is related to the air Pressure and the air flow rate when the outer diameter, the inner diameter, the air Pressure, the pitch, the thickness, the chord length of the aircraft blade 402, and the rotational speed of the driving motor 20 are all kept constant, and the installation angle 402 of the aircraft blade 402 of the embodiment can be a schematic diagram of the distance between the inner arc 41 or the two ends of the chord line.

While each of the above-mentioned parameters is kept constant, for example, in a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the inner diameter of the annular disk 10 is 115 mm, the number of layers of the annular disks 10 is 8, the pitch of the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the chord length of the aero blade 402 is 35 mm, the rotation speed of the drive motor 20 is 1000rpm, and the installation angle α of the aero blade 402 may be set to-50 ° to 15 ° in consideration of the wind pressure and the wind pressure.

Fig. 18 is a schematic diagram of the connection between the laminar flow fan 100 and the driving motor 20 with gradually changed pitches of the plurality of annular disks 10, fig. 19 is a schematic diagram of the connection between the laminar flow fan 100 and the driving motor 20 in another view angle in fig. 18, and fig. 20 is a schematic diagram of the relation between the gradual change of pitches of the plurality of annular disks 10 of the laminar flow fan 100 in fig. 18 and the air volume and the air pressure.

As shown in fig. 18 and 19, the connection member of the laminar flow fan 100 may also be a connection rod 60. The connecting rods 60 may also be provided in plurality, and penetrate through the driving disk 30 and the plurality of annular disks 10 at even intervals, so as to ensure that the connection relationship between the driving disk 30 and the plurality of annular disks 10 is stable, and further ensure that the driving disk 30 can stably drive the plurality of annular disks 10 to rotate when the driving disk 30 is driven to rotate by the driving motor 20, thereby improving the operational reliability of the laminar flow fan 100. As the distance between two adjacent annular disks 10 gradually increases from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 can be effectively increased, so that the air outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the distance between two adjacent annular disks 10 has the same variation, that is, the distance between two adjacent annular disks 10 increases from one side away from the driving disk 30 to the other side.

In fig. 20, the abscissa axis damping uniform expansion Plate distance increment refers to the amount of change in the distance between two adjacent ring disks 10 in the direction from one side away from the driving disk 30 to the other side, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Also, the variation amount of the pitch between two adjacent annular disks 10 is the same, that is, the increase or decrease of the pitch between two adjacent annular disks 10 is the same.

Specifically, fig. 20 is a schematic diagram illustrating the relationship between the gradual change of the pitch of the plurality of annular disks 10 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness, and the rotation speed of the driving motor 20 of the annular disk 10 of the laminar flow fan 100 are all kept constant. As shown in fig. 20, when the above-mentioned parameters are all kept constant, the distance between every two adjacent ring disks 10 in the plurality of ring disks 10 gradually changes from one side far away from the driving disk 30 to the other side, which has a large influence on the air volume and a small influence on the air pressure. When the variation of the spacing between two adjacent annular disks 10 in the direction from the side away from the driving disk 30 to the other side, which is indicated by the axis of abscissa, is a positive number, it is described that the spacing between each two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from the side away from the driving disk 30 to the other side; when the amount of change in the pitch between two adjacent ring disks 10 in the direction from the side away from the driver disk 30 to the other side, which is indicated by the abscissa axis, is a negative number, it is described that the pitch between each two adjacent ring disks 10 in the plurality of ring disks 10 gradually decreases from the side away from the driver disk 30 to the other side.

As can be seen from fig. 20, when the pitch variation amounts between every two adjacent annular disk sheets 10 in the plurality of annular disk sheets 10 are-1 mm, 1 mm and 2 mm, the air volume and the air pressure of the laminar flow fan 100 are both greatly improved. The interval between every two adjacent ring disks 10 in the plurality of ring disks 10 is set to gradually increase from one side far from the driving disk 30 to the other side, considering the air volume and the air pressure of the laminar flow fan 100 together. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the inner diameter of the annular disk 10 is 115 mm, the number of the annular disks 10 is 8, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the driving motor 20 is 1000rpm (revolutions per minute), and at this time, in comprehensive consideration of the air volume and the air pressure of the laminar flow fan 100, the distance between two adjacent annular disks 10 in the 8 annular disks 10 may be set sequentially from one side far away from the driving disk 30 to the other side: the distance between two adjacent annular disks 10 is gradually increased by 1 mm from one side far away from the drive disk 30 to the other side, namely, the distance between two adjacent annular disks 10 is 13.75 mm, 14.75 mm, 15.75 mm, 16.75 mm, 17.75 mm, 18.75 mm and 19.75 mm. It should be noted that, the distance between two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from the side away from the driving disk 30 to the other side, which actually means that the distance between two adjacent annular disks 10 gradually increases along the direction of the airflow flowing in the air inlet channel 11.

Fig. 21 is a partial sectional view of a laminar flow fan 100 with gradually changing inner diameters of a plurality of annular disks 10, and fig. 22 is a schematic diagram of the relationship between the gradual change of the inner diameters of the plurality of annular disks 10 and the air volume and the air pressure of the laminar flow fan 100 in fig. 21. As the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 can be effectively increased, so that the air outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the inner diameters of two adjacent annular disks 10 vary by the same amount, that is, the inner diameters of the annular disks 10 decrease from the side away from the driving disk 30 to the other side by the same amount.

In fig. 22, the abscissa axis damping uniform expansion Inner radius increment refers to the variation of the Inner diameter of each ring disc 10 and the Inner diameter of the ring disc 10 adjacent to the lower side, the left ordinate axis Massflow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the air Pressure. Specifically, fig. 22 is a schematic diagram showing the relationship between the gradual change of the inner diameters of the plurality of annular disks 10 and the air volume and the air pressure when the outer diameter, the distance, the number, the thickness, and the rotation speed of the driving motor 20 of the annular disk 10 of the laminar flow fan 100 are all kept constant. As shown in fig. 22, when the above-mentioned parameters are all kept constant, the inner diameters of the plurality of annular disks 10 gradually change from one side away from the driving disk 30 to the other side, so that the influence on the air volume is large and the influence on the air pressure is small. When the variation of the inner diameter of each annular disk 10 represented by the abscissa axis and the inner diameter of the adjacent annular disk 10 below is a positive number, it means that the inner diameters of the plurality of annular disks 10 gradually increase from one side away from the driving disk 30 to the other side; when the change amount of the inner diameter of each ring disk 10 shown by the abscissa axis and the inner diameter of the ring disk 10 adjacent below is a negative number, it means that the inner diameters of the plurality of ring disks 10 gradually decrease from one side away from the driving disk 30 to the other side.

As shown in fig. 22, when the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 increases and the air pressure slightly decreases; when the inner diameters of the plurality of ring disks 10 gradually increase from one side away from the driving disk 30 to the other side, the wind pressure of the laminar flow fan 100 slightly increases and the wind volume greatly decreases. Thus, the inner diameters of the plurality of ring disks 10 are set to be gradually reduced from one side away from the driving disk 30 to the other side in consideration of the air volume and the air pressure of the laminar flow fan 100.

In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the pitch of the annular disks 10 is 13.75 mm, the number of the annular disks 10 is 8, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the driving motor 20 is 1000rpm (revolutions per minute), and at this time, the variation between the inner diameter of each annular disk 10 and the inner diameter of the adjacent annular disk 10 below may be set to be-5 mm in consideration of the air volume and the air pressure of the laminar flow fan 100. That is, the inner diameters of the 8 annular disks 10 from one side to the other side away from the driving disk 30 can be set as follows: the inner diameter of each annular disk 10 is reduced by 5mm from the inner diameter of the adjacent annular disk 10 below, by 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm, 85 mm, and 80 mm. It should be noted that the distance between the annular disks 10 in the above description specifically refers to the distance between two adjacent annular disks 10. It should be emphasized that the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, which means that the inner diameters of the plurality of annular disks 10 gradually decrease along the direction of the airflow flowing in the air inlet channel 11.

Fig. 23 is a schematic diagram of a central angle of a connecting line of an inner diameter and an outer diameter of a plurality of annular disks 10 of the laminar flow fan 100 in which the annular disks 10 are arc-shaped disks on the same longitudinal section passing through a central axis, and fig. 24 is a schematic diagram of a relationship between the central angle and air volume and air pressure in fig. 23. Each of the ring disks 10 of the laminar flow fan 100 of fig. 23 is an arc-shaped disk which gradually approaches the driving disk 30 from the center to the edge and protrudes toward one side of the driving disk 30. Compared with a plane disk, the arc disk can enable the angle of external air entering the laminar flow fan 100 to better accord with the flow of fluid, so that the external air can enter the laminar flow fan 100 more conveniently, and the air volume loss is effectively reduced. Further, the inner diameters of the plurality of annular disks 10 are gradually reduced from one side away from the driving disk 30 to the other side, and the inner and outer diameters of the plurality of annular disks 10 on the same longitudinal section passing through the central axis form a central angle θ.

In fig. 24, the abscissa axis θ indicates a central angle of a line connecting the inner and outer diameters of the plurality of annular disks 10 on the same vertical section passing through the central axis, the left ordinate axis Mass flow rate indicates an air volume, and the right ordinate axis Pressure means an air Pressure. Specifically, fig. 24 is a schematic diagram showing the relationship between the central angle θ and the air volume and the air pressure when the outer diameter, the number of layers, the pitch, the thickness of the annular disk 10 and the rotation speed of the driving motor 20 of the laminar flow fan 100 are all kept constant. As shown in fig. 24, when the above-mentioned parameters are all kept constant, the air volume of the laminar flow fan 100 increases and then decreases as the central angle θ increases, and the air pressure slightly increases. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the number of layers of the annular disk 10 is 10, the pitch of the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the driving motor 20 is 1000rpm (revolutions per minute), and in consideration of the air volume and the air pressure, the central angle θ of the inner and outer diameter connecting lines of the plurality of annular disks 10 on the same longitudinal section passing through the central axis may be set to be 9 ° to 30 °. As shown in fig. 24, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 100 reaches the maximum value.

The wall-mounted air conditioner indoor unit 300 of the present embodiment includes: a housing 310 defining a cavity therein, the housing 310 including a front panel 311 and a rear case 312, the rear case 312 being provided with an intake vent 330; a first air duct 811 and a second air duct 812 respectively defining a first air outlet 321 and a second air outlet 322 facing forward; an evaporator 382 disposed inside the cavity corresponding to the air inlet 330 and configured to exchange heat with air entering the cavity through the air inlet 330; and a laminar flow fan 110 disposed inside the cavity and in front of the evaporator 382, configured to make the air heat exchanged by the evaporator 382 form laminar flow air by using a viscous effect, and blow out from the first air outlet 321 through the first air duct 811 and/or blow out from the second air outlet 322 through the second air duct 812. The wall-mounted air conditioner indoor unit 300 realizes up-down air outlet only through one laminar flow fan 110, and can reduce the occupied area and the overall cost of the laminar flow fan 110 while effectively reducing the air volume loss. In addition, laminar flow fan 110 realizes the laminar flow air supply through the viscidity effect, and air supply process noise is little, the amount of wind is high, effectively promotes user's use and experiences.

Further, the wall-mounted air conditioner indoor unit 300 of the present invention further includes: a first guard plate 821 screwed to the front side of the driving motor 20; a scroll 520 fixed to the first cover plate 821, having the laminar flow fan 110 disposed therein, and having an outlet 521 at the scroll 520; the rotating motor 823 is provided with a plurality of claws 824, the first guard plate 821 is fixed to the plurality of claws 824, and the rotating motor 823 is configured to drive the first guard plate 821 and the scroll casing 520 to rotate, and when the scroll casing 520 rotates to the outlet 521 and is communicated with the first air duct 811, laminar air formed by the laminar flow fan 110 enters the first air duct 811; when the volute 520 rotates to the position that the outlet 521 is communicated with the second air duct 812, laminar air formed by the laminar flow fan 110 enters the second air duct 812; and a second cover 822 screwed to the front side of the rotating motor 823, and the second cover 822 is fixed to the front panel 311. The spiral case 520 can rotate in a mode matching with the operation mode of the wall-mounted air conditioner indoor unit 300, for example, during refrigeration, the spiral case 520 can rotate to the outlet 521 to be communicated with the first air duct 811, and laminar air formed by the laminar flow fan 110 enters the first air duct 811 and is blown out through the first air outlet 321 at the upper part to form ceiling type upward blowing air; during heating, the spiral case 520 may rotate to the outlet 521 to communicate with the second air duct 812, and the laminar air generated by the laminar flow fan 110 enters the second air duct 812 and is blown out through the second air outlet 322 at the lower portion to generate downward blowing carpet type air supply, which may make the temperature of the environment where the wall-mounted air conditioner indoor unit 300 is located more uniform.

It should be understood by those skilled in the art that, unless otherwise specified, terms used to indicate orientation or positional relationship in the embodiments of the present invention such as "up," "down," "left," "right," "front," "rear," and the like are based on actual usage of the wall-mounted air conditioner indoor unit 300, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore, should not be construed as limiting the present invention.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit comprising:

the air conditioner comprises a shell, a fan and a controller, wherein a cavity is defined in the shell, the shell comprises a front panel and a rear shell, and the rear shell is provided with an air inlet;

the first air duct and the second air duct are respectively limited with a first air outlet and a second air outlet which are forward;

the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet; and

and the laminar flow fan is arranged in the cavity and positioned on the front side of the evaporator, is configured to enable air subjected to heat exchange by the evaporator to form laminar flow air by utilizing a viscous effect, and is blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct.

2. The wall mounted air conditioner indoor unit according to claim 1,

the laminar flow fan comprises a laminar flow fan and a driving motor,

wherein the laminar flow fan comprises: the air passing through the evaporator enters gaps among the annular disks through the air inlet channels;

the drive motor is configured to: and driving the plurality of annular discs to rotate so as to enable the boundary layer of the air close to the surfaces of the plurality of annular discs to rotationally move from inside to outside, thereby forming laminar air blown out from the first air outlet through the first air duct and/or blown out from the second air outlet through the second air duct.

3. The wall mounted air conditioner indoor unit according to claim 2, further comprising:

the first guard plate is in threaded connection with the front side of the driving motor;

the volute is fixed with the first guard plate, the laminar flow fan is arranged in the volute, and the volute is provided with an outlet;

the rotating motor is provided with a plurality of clamping jaws, the first protection plate is fixed with the plurality of clamping jaws, the rotating motor is configured to drive the first protection plate and the volute to rotate, and when the volute rotates to the outlet and is communicated with the first air channel, laminar air formed by the laminar flow fan enters the first air channel; when the volute rotates to the position that the outlet is communicated with the second air duct, laminar air formed by the laminar flow fan enters the second air duct; and

and the second guard plate is in threaded connection with the front side of the rotating motor, and the second guard plate is fixed with the front panel.

4. The wall mounted air conditioner indoor unit according to claim 3,

the rear shell comprises a rear panel, a top plate, a bottom plate and two side panels, the air inlet is formed in the rear panel, and

the rear part of the rear panel is provided with a convex column so as to hang the wall-mounted air conditioner indoor unit on a wall, a gap is formed between the rear panel and the wall, and air is fed from the air inlet.

5. The wall mounted air conditioner indoor unit according to claim 2,

the laminar flow fan further includes: the driving discs are arranged on one side of the annular discs at intervals in parallel; and a connecting member penetrating the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk,

the drive motor is further configured to: the driving disc is directly driven to rotate, and the driving disc drives the annular discs to rotate.

6. The wall mounted air conditioner indoor unit according to claim 5,

the center of the driving disk faces the annular disks to form a groove, and the driving motor is fixedly arranged in the groove.

7. The wall mounted air conditioner indoor unit according to claim 5,

the surface of the driving disk facing the driving motor is a plane, and the surface facing the plurality of annular disks has a conical projection to guide the air flow entering the laminar flow fan and assist in forming the laminar flow wind.

8. The wall mounted air conditioner indoor unit according to claim 5,

the connecting piece is a connecting piece, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves and the air volume generated by the laminar flow fan are in a linear relation.

9. The wall mounted air conditioner indoor unit according to claim 8,

the cross section of the connecting piece is provided with double arcs which are sequentially arranged along the rotating direction of the annular disc: the inner arc and the back arc are both convex towards the rotating direction of the annular disc, and have the same circle center and are arranged in parallel or have different circle centers and are intersected at two ends.

10. The wall mounted air conditioner indoor unit of claim 5, wherein the plurality of ring-shaped discs are arranged according to one or more of the following structures:

the inner diameters of the annular discs are gradually reduced from one side far away from the driving disc to the other side;

the distance between two adjacent annular disks in the plurality of annular disks is gradually increased from one side far away from the driving disk to the other side;

each annular disc is an arc disc which is gradually close to the driving disc from the center to the edge and protrudes towards one side of the driving disc.