Wall-mounted air conditioner indoor unit

Abstract

The present invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit includes: a shell, a cavity is defined inside the shell, and an air outlet is defined at the front of the shell; a laminar flow fan is arranged inside the cavity, and includes: a plurality of annular discs, which are arranged in parallel and spaced apart from each other and have the same central axis, and the centers of the plurality of annular discs jointly form an air inlet channel, and the air in the cavity enters the gaps between the plurality of annular discs through the air inlet channel; and a laminar flow motor, which is configured to drive the plurality of annular discs to rotate so that the air boundary layer close to the surfaces of the plurality of annular discs rotates and moves from the inside to the outside, thereby forming laminar wind that is blown out from the air outlet. The wall-mounted air conditioner indoor unit of the present invention is provided with a laminar flow fan, which realizes laminar air supply through the viscosity effect, and the air supply process has low noise and high air volume, which effectively improves the user experience.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, in particular to an indoor unit of a wall-mounted air conditioner. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, various air conditioning devices have become one of the indispensable electrical equipment in people's daily lives. Various air conditioning devices can help people reach a temperature they can adapt to when the ambient temperature is too high or too low.

[0003] The current air conditioning adjustment devices mainly include various types of air conditioners and fans. Since the indoor unit of the wall-mounted air conditioner is generally hung on the wall of the room, it does not need to occupy the space at the bottom of the room, so it is more and more widely used. However, the current indoor unit of the wall-mounted air conditioner mainly uses a cross-flow fan to supply air, and the cross-flow fan often has the following problems: the air outlet direction is straight ahead. Although there are swing blades to guide the air left and right and air guide plates to guide the air up and down, it is limited by the volute structure. The left and right air supply angle is less than 80° and the up and down air supply angle is less than 100°, so its air supply range is very limited; due to the long strip air outlet form, the air volume is concentrated, resulting in a high wind speed, so it is difficult for the air to avoid people, resulting in a serious phenomenon of the air blowing directly on people; the current cross-flow fan is mainly a forward blade, and the blade periodically impacts the passing airflow, generating obvious rotation noise. The volute cooperates with the cross-flow fan to achieve the air supply effect, and the front and rear volute tongues will also impact the airflow, generating strong turbulent noise. Under the limitation of performance indicators, the noise value is close to the limit. Summary of the invention

[0004] An object of the present invention is to provide a wall-mounted air conditioner indoor unit with low noise, high air volume and high air pressure.

[0005] A further object of the present invention is to make the air outlet of the indoor unit of the wall-mounted air conditioner uniform and soft, so as to meet the comfort requirements of the users.

[0006] In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising: a shell, a cavity is defined inside the shell, and an air outlet is defined at the front of the shell; a laminar fan is arranged inside the cavity, and comprises: a plurality of annular discs, which are arranged in parallel with each other and have the same central axis, and the centers of the plurality of annular discs jointly form an air inlet channel, and the air in the cavity enters the gaps between the plurality of annular discs through the air inlet channel; and a laminar flow motor, configured to drive the plurality of annular discs to rotate, so that the air boundary layer close to the surfaces of the plurality of annular discs rotates and moves from the inside to the outside, thereby forming laminar wind to be blown out from the air outlet.

[0007] Optionally, the indoor unit of the wall-mounted air conditioner also includes: a volute, which accommodates a laminar flow fan inside, and the rear part of the volute has an inlet arranged corresponding to the air inlet channel, so that the air in the cavity enters the air inlet channel through the inlet; a gap is formed between the circumference of the laminar flow fan and the inner wall of the front part of the volute, so that the laminar wind flows to the air outlet through the gap.

[0008] Optionally, the indoor unit of the wall-mounted air conditioner also includes: a fixing plate, one side of which is provided with a plurality of reinforcing ribs and the other side of which is provided with a plurality of slots; and a fixing frame, a side facing the fixing plate is provided with a plurality of claws corresponding to the plurality of slots, so as to fix the laminar flow motor between the fixing frame and the fixing plate after the plurality of claws are respectively screwed to the plurality of slots.

[0009] Optionally, the indoor unit of the wall-mounted air conditioner further includes: a shielding member, which is covered on the front side of the fixing plate, and the front part of the shell is a front panel, the center of the front panel has a gap, and the shielding member and the front panel jointly define an air outlet.

[0010] Optionally, the laminar flow fan also includes: a driving disc, which is arranged in parallel and at intervals on one side of the multiple annular discs; and a connecting piece, which passes through the driving disc and the multiple annular discs to connect the multiple annular discs to the driving disc. The laminar flow motor is also configured to: directly drive the driving disc to rotate, and then the driving disc drives the multiple annular discs to rotate.

[0011] Optionally, a groove is formed at the center of the driving disc toward the plurality of annular discs, and the laminar flow motor is fixedly disposed in the groove.

[0012] Optionally, the surface of the driving disc facing the laminar flow motor is flat, and the surface facing the plurality of annular discs has a conical protrusion to guide the air flow entering the laminar flow fan and assist in forming laminar wind.

[0013] Optionally, the connecting member is a connecting plate, and the cross section of the connecting plate has two curved lines arranged in sequence along the rotation direction of the annular disk, and the chord lengths of the two curved lines are linearly related to the air volume generated by the laminar fan.

[0014] Optionally, the cross-section of the connecting plate has two arcs arranged in sequence along the direction of rotation of the annular disk: an inner arc and a back arc, and both the inner arc and the back arc protrude in the direction of rotation of the annular disk, and the inner arc and the back arc have the same center and are arranged in parallel or have different centers and intersect at both ends.

[0015] Optionally, the multiple annular discs are arranged according to one or more of the following structures: the inner diameters of the multiple annular discs gradually decrease from one side away from the driving disc to the other side; the spacing between two adjacent annular discs in the multiple annular discs gradually increases from one side away from the driving disc to the other side; each annular disc is an arc-shaped disc that gradually approaches the driving disc from the center to the edge and bulges toward one side of the driving disc.

[0016] The wall-mounted air conditioner indoor unit of the present invention comprises: a shell, a cavity is defined inside the shell, and an air outlet is defined at the front of the shell; a laminar flow fan is arranged inside the cavity, and comprises: a plurality of annular discs, which are arranged in parallel and spaced apart from each other and have the same central axis, and the centers of the plurality of annular discs jointly form an air inlet channel, and the air in the cavity enters the gaps between the plurality of annular discs through the air inlet channel; and a laminar flow motor, which is configured to drive the plurality of annular discs to rotate so that the air boundary layer close to the surface of the plurality of annular discs rotates and moves from the inside to the outside, thereby forming laminar wind to be blown out from the air outlet. The wall-mounted air conditioner indoor unit is provided with a laminar flow fan, which realizes laminar air supply through the viscosity effect, and the air supply process has low noise and high air volume, which effectively improves the user experience.

[0017] Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the laminar flow fan also includes: a driving disc, which is arranged in parallel at intervals on one side of the multiple annular discs; and a connecting piece, which penetrates the driving disc and the multiple annular discs to connect the multiple annular discs to the driving disc, and the laminar flow motor is also configured to: directly drive the driving disc to rotate, and then the driving disc drives the multiple annular discs to rotate. The wall-mounted air conditioner indoor unit also includes: a fixing plate, one side of which is provided with multiple reinforcing ribs and the other side is provided with multiple slots; and a fixing frame, a side facing the fixing plate is provided with multiple claws corresponding to the multiple slots, so that the laminar flow motor is fixed between the fixing frame and the fixing plate after the multiple claws are respectively screwed to the multiple slots. In addition, the laminar flow motor is also fixed to the driving disc of the laminar flow fan, which can effectively enhance the connection firmness between the laminar flow fan and the laminar flow motor and improve the overall working reliability.

[0018] Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the multiple annular discs of the laminar fan can be arranged according to one or more of the following structures: the inner diameter of the multiple annular discs gradually decreases from one side away from the driving disc to the other side; the spacing between two adjacent annular discs in the multiple annular discs gradually increases from one side away from the driving disc to the other side; each annular disc is an arc-shaped disc that gradually approaches the driving disc from the center to the edge and bulges toward one side of the driving disc. The above-mentioned forms of arranging multiple annular discs can effectively increase the air volume of the laminar fan, so that the air output of the laminar fan meets the user's use requirements. In addition, the connecting piece can be a connecting piece, and the cross-section of the connecting piece has two sections of curves arranged in sequence along the direction of rotation of the annular disc, and the chord length of the two sections of curves is linearly related to the air volume generated by the laminar fan. The arrangement of the connecting piece can effectively increase the wind pressure of the laminar fan, so that after the laminar wind is blown out through the gaps between the multiple annular discs, due to the pressure difference, the air outside the laminar fan is pressed into the annular disc through the air inlet channel, and this cycle is repeated, thereby forming a laminar air circulation. A gap is formed between the circumference of the laminar flow fan of the indoor unit of the wall-mounted air conditioner and the inner wall of the front part of the volute accommodating the laminar flow fan, so that the laminar wind flows to the air outlet through the gap, making the air outlet of the indoor unit of the wall-mounted air conditioner uniform and soft, meeting the user's comfort needs.

[0019] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit according to Embodiment 1 of the present invention;

[0022] Figure 2 yes Figure 1 A side cross-sectional view of an indoor unit of a mid-wall mounted air conditioner;

[0023] Figure 3 yes Figure 1 A schematic diagram of the partial structure of the indoor unit of a wall-mounted air conditioner;

[0024] Figure 4 yes Figure 1 Exploded diagram of the components of the indoor unit of a wall-mounted air conditioner;

[0025] Figure 5is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit according to Embodiment 2 of the present invention;

[0026] Figure 6 yes Figure 5 A side cross-sectional view of an indoor unit of a mid-wall mounted air conditioner;

[0027] Figure 7 yes Figure 5 A schematic diagram of the partial structure of the indoor unit of a wall-mounted air conditioner;

[0028] Figure 8 yes Figure 5 Exploded diagram of the components of the indoor unit of a wall-mounted air conditioner;

[0029] Fig. 9 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit according to Embodiment 3 of the present invention;

[0030] Fig.10 yes Fig. 9 A side cross-sectional view of an indoor unit of a mid-wall mounted air conditioner;

[0031] Fig.11 yes Fig. 9 A schematic diagram of the partial structure of the indoor unit of a wall-mounted air conditioner;

[0032] Fig.12 yes Fig. 9 Exploded diagram of the components of the indoor unit of a wall-mounted air conditioner;

[0033] Fig.13 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit according to a fourth embodiment of the present invention;

[0034] Fig.14 yes Fig.13 A side cross-sectional view of an indoor unit of a mid-wall mounted air conditioner;

[0035] Fig.15 yes Fig.13 A schematic diagram of the partial structure of the indoor unit of a wall-mounted air conditioner;

[0036] Fig.16 yes Fig.13 Exploded diagram of the components of the indoor unit of a wall-mounted air conditioner;

[0037] Fig.17 is a schematic diagram of 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;

[0038] Fig.18 is a schematic diagram of the air supply principle of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0039] Fig.19is a velocity distribution and force distribution diagram of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0040] Fig. 20 It is a schematic diagram of the structure of a laminar flow fan with a driving disk having grooves;

[0041] Fig.21 yes Fig. 20 A schematic diagram of the structure of the meso-laminar flow fan from another perspective;

[0042] Fig. 22 yes Fig. 20 A schematic structural diagram of a mesoscopic fan from another perspective;

[0043] Fig.23 yes Fig. 20 A cross-sectional view of a mid-flow fan;

[0044] Fig.24 It is a schematic diagram of the connection between a laminar flow fan having a conical protrusion on a driving disk and a laminar flow motor;

[0045] Fig.25 yes Fig.24 A schematic diagram of the structure of the meso-laminar flow fan from another perspective;

[0046] Fig.26 yes Fig.24 Schematic cross section of a meso-laminar flow fan;

[0047] Fig. 27 yes Fig.26 Schematic diagram of the relationship between the chord length of the middle connecting piece and the wind volume and wind pressure;

[0048] Fig.28 yes Fig.26 Schematic diagram of the relationship between the installation angle of the middle connecting piece and the air volume and air pressure;

[0049] Fig.29 is a schematic cross-sectional view of a laminar flow fan with aero blades;

[0050] Fig.30 yes Fig.29 Schematic diagram of the relationship between the installation angle of the aviation blades of the mid-level flow fan and the air volume and air pressure;

[0051] Fig.31 It is a schematic diagram of the connection between a laminar flow fan with multiple annular discs with gradually varying spacing and a laminar flow motor;

[0052] Fig.32 yes Fig.31 A schematic diagram showing the connection between the laminar flow fan and the laminar flow motor from another perspective;

[0053] Fig.33 yes Fig.31Schematic diagram of the relationship between the gradual change in the spacing between multiple annular disks of a mid-level flow fan and the air volume and air pressure;

[0054] Fig.34 is a partial cross-sectional view of a laminar flow fan with multiple annular disks with gradually changing inner diameters;

[0055] Fig.35 yes Fig.34 Schematic diagram of the relationship between the gradual change of the inner diameter of multiple annular disks of the meso-laminar flow fan and the air volume and air pressure;

[0056] Fig.36 A schematic diagram of the central angle of a line connecting the inner and outer diameters 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

[0057] Fig.37 yes Fig.36 Schematic diagram of the relationship between the central angle of the circle and the air volume and pressure. DETAILED DESCRIPTION

[0058] The present embodiment provides a wall-mounted air conditioner indoor unit, which is provided with a laminar flow fan and realizes laminar air supply through the viscosity effect. The air supply process has low noise, high air volume and high air pressure, which effectively improves the user experience. Figure 1 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit 300 according to Embodiment 1 of the present invention; Figure 2 yes Figure 1 A side cross-sectional view of a wall-mounted air conditioner indoor unit 300; Figure 3 yes Figure 1 A schematic diagram of a partial structure of an indoor unit 300 of a wall-mounted air conditioner; Figure 4 yes Figure 1 An exploded schematic diagram of the components of the indoor unit 300 of the wall-mounted air conditioner; Figure 5 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit 300 according to Embodiment 2 of the present invention; Figure 6 yes Figure 5 A side cross-sectional view of a wall-mounted air conditioner indoor unit 300; Figure 7 yes Figure 5 A schematic diagram of a partial structure of an indoor unit 300 of a wall-mounted air conditioner; Figure 8 yes Figure 5 An exploded schematic diagram of the components of the indoor unit 300 of the wall-mounted air conditioner; Fig. 9 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit 300 according to Embodiment 3 of the present invention; Fig.10 yes Fig. 9 A side cross-sectional view of a wall-mounted air conditioner indoor unit 300; Fig.11 yes Fig. 9 A schematic diagram of a partial structure of an indoor unit 300 of a wall-mounted air conditioner; Fig.12 yes Fig. 9An exploded schematic diagram of the components of the indoor unit 300 of the wall-mounted air conditioner; Fig.13 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit 300 according to a fourth embodiment of the present invention; Fig.14 yes Fig.13 A side cross-sectional view of a wall-mounted air conditioner indoor unit 300; Fig.15 yes Fig.13 A schematic diagram of a partial structure of an indoor unit 300 of a wall-mounted air conditioner; Fig.16 yes Fig.13 An exploded schematic diagram of the components of the indoor unit 300 of the wall-mounted air conditioner; Fig.17 FIG. 1 is a schematic diagram of air circulation of a laminar flow fan 100 in a wall-mounted air conditioner indoor unit 300 according to an embodiment of the present invention. Fig.18 1 is a schematic diagram of the air supply principle of the laminar flow fan 100 in the indoor unit 300 of the wall-mounted air conditioner according to an embodiment of the present invention. Fig.19 1 is a diagram showing the velocity distribution and force distribution of the laminar flow fan 100 in the wall-mounted air conditioner indoor unit 300 according to an embodiment of the present invention. Fig. 20 3 is a schematic structural diagram of a laminar flow fan 100 in which a driving disk 30 has a groove 32. Fig.21 yes Fig. 20 A schematic structural diagram of the middle laminar flow fan 100 from another perspective, Fig. 22 yes Fig. 20 A structural schematic diagram of the middle laminar flow fan 100 from another perspective, Fig.23 yes Fig. 20 A cross-sectional view of a mid-level flow fan 100. Figures 1 to 17 As shown, the wall-mounted air conditioner indoor unit 300 may generally include: a housing 310 , a laminar flow fan 100 and a laminar flow motor 20 .

[0059] The housing 310 defines a cavity inside, and the housing 310 defines an air outlet 320 at the front. Figures 1 to 12 As shown, the housing 310 may include: a front panel 311, a rear housing 312, a top panel 313 and a bottom panel 314, wherein the rear housing 312 may include a rear panel 315 and a side panel 316. The front portion of the housing 310 is the front panel 311, that is, the front panel 311 defines an air outlet 320. In another embodiment, as Figures 13 to 16As shown, the housing 310 may only include the rear shell 312, and the rear shell 312 may still include the rear panel 315 and the side panel 316. At this time, the front part of the housing 310, that is, the front part of the rear shell 312, is defined with an air outlet 320. The housing 310 is also provided with an air inlet 330, and the air inlet 330 may be provided in the form of an air inlet grille, which can suck indoor air into the cavity from different directions and filter the air. It should be noted that a plurality of convex columns 740 may also be provided at the rear of the rear panel 315 to create a certain gap with the wall, so that air can be introduced when the air inlet 330 is provided on the rear panel 315.

[0060] The laminar flow fan 100 is arranged inside the cavity, and includes: a plurality of annular discs 10, which are arranged in parallel and spaced apart from each other and have the same central axis. The centers of the plurality of annular discs 10 jointly form an air inlet channel 11, and the air in the cavity enters the gaps between the plurality of annular discs 10 through the air inlet channel 11. The laminar flow motor 20 is configured to drive the plurality of annular discs to rotate so that the air boundary layer 13 near the surfaces of the plurality of annular discs rotates and moves from the inside to the outside, thereby forming laminar wind to be blown out from the air outlet 320. It should be noted that the plurality of annular discs 10 of the laminar flow fan 100 of this embodiment are all arranged in parallel with the front panel 311 or the rear panel 315, that is, the air inlet channel 11 is perpendicular to the front panel 311 or the rear panel 315.

[0061] Specifically, the laminar flow motor 20 drives the plurality of annular discs to rotate, so that the plurality of annular discs contact the air between each other and move relative to each other, thereby causing the air boundary layer 13 near the surface of the plurality of annular discs to rotate from the inside to the outside due to the viscosity effect driven by the rotating plurality of annular discs to form laminar wind. The gaps between the plurality of annular discs form a plurality of exhaust ports 12, each of which can achieve 360° air supply, and the laminar wind discharged from the exhaust ports 12 is blown out through the air outlet 320 to the environment outside the indoor unit 300 of the wall-mounted air conditioner.

[0062] In a preferred embodiment, the wall-mounted air conditioner indoor unit 300 may further include: a volute 520, which accommodates a laminar flow fan 100, and the rear part of the volute 520 has an inlet 522 arranged corresponding to the air inlet channel 11, so that the air in the cavity enters the air inlet channel 11 through the inlet 522; a gap 710 is formed between the circumference of the laminar flow fan 100 and the inner wall of the front part of the volute 520, so that the laminar wind flows to the air outlet 320 through the gap 710.

[0063] The wall-mounted air conditioner indoor unit 300 may also include an evaporator, which is arranged inside the cavity corresponding to the air inlet 330 and is configured to perform heat exchange on the air entering the cavity through the air inlet 330. The evaporator may specifically be a U-shaped evaporator 381, a flat evaporator 382 or a cover buckle evaporator 385, etc. In addition, a water receiving tray (not shown in the figure) may be provided below the evaporator to receive the condensed water generated by the evaporator. It should be noted that there is a gap between the volute 520 and the evaporator, especially between the rear part of the volute 520 and the evaporator, so that the air that has been heat exchanged by the evaporator can enter the air inlet channel 11 through the inlet 522 at the rear part of the volute 520.

[0064] like Fig.17 As shown, the laminar flow fan 100 may further include: a driving disc 30 and a connecting member. The driving disc 30 is arranged in parallel at intervals on one side of the plurality of annular discs 10. The connecting member penetrates the driving disc 30 and the plurality of annular discs 10 to connect the plurality of annular discs 10 to the driving disc 30. Fig. 20 As shown, the connecting member can be a connecting piece 40. The laminar flow motor 20 can also be configured to directly drive the driving disc 30 to rotate, and then the driving disc 30 drives the multiple annular discs 10 to rotate. That is to say, the laminar flow motor 20 mentioned above is configured to drive the multiple annular discs 10 to rotate, which depends on the laminar flow motor 20 first driving the driving disc 30 to rotate, and then the driving disc 30 drives the multiple annular discs 10 to rotate. In a specific embodiment, the radius of the driving disc 30 is the same as the outer diameter of the multiple annular discs 10, and can be set in a certain range, such as 170㎜ to 180㎜, so as to constrain the horizontal occupied volume of the laminar flow fan 100, and cooperate with the number of annular discs 10 and the spacing between two adjacent annular discs 10 to constrain the longitudinal thickness of the laminar flow fan 100, which can effectively constrain the overall occupied volume of the laminar flow fan 100. It should be noted that the inner diameter of the annular disc 10 refers to the radius of its inner circumference; the outer diameter refers to the radius of its outer circumference. The specific value of the outer diameter of the annular disk 10 is only an example and is not intended to limit the present invention.

[0065] Several specific embodiments of the wall-mounted air conditioner indoor unit 300 are introduced below:

[0066] Embodiment 1: Figures 1 to 4As shown, the wall-mounted air conditioner indoor unit 300 of this embodiment is provided with a U-shaped evaporator 381, which is placed vertically inside the cavity and has a U-shaped cross section, and the U-shaped opening faces the front panel 311. The air inlet 330 is arranged on the rear panel 315 and the two side panels 316 of the rear shell 312, that is, air is inlet from three sides. In other words, the U-shaped evaporator 381 is arranged corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can all be heat exchanged through the U-shaped evaporator 381. The heat-exchanged air enters the air inlet channel 11 through the inlet 522 at the rear of the volute 520, and then enters between the multiple annular discs of the laminar fan 100. Finally, the laminar wind generated by the laminar fan 100 flows to the air outlet 320 through the gap 710.

[0067] Embodiment 2: Figures 5 to 8 As shown, the wall-mounted air conditioner indoor unit 300 of this embodiment is provided with a cover buckle evaporator 385, and the cover buckle evaporator 385 has a peripheral wall 386 and a bottom wall 387, the bottom wall 387 is parallel to the front panel 311 and the peripheral wall 386 is located on the side close to the front panel 311. The air inlet 330 is arranged on the top plate 313, the bottom plate 314, the rear panel 315 of the rear shell 312 and the two side panels 316, that is, the air enters from five sides. In other words, the cover buckle evaporator 385 is arranged corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can all be heat exchanged through the cover buckle evaporator 385. The air after heat exchange enters the air inlet channel 11 through the inlet 522 at the rear of the volute 520, and then enters between the multiple annular discs of the laminar fan 100. Finally, the laminar wind generated by the laminar fan 100 flows to the air outlet 320 through the gap 710.

[0068] Embodiment 3: Figures 9 to 12 As shown, the wall-mounted air conditioner indoor unit 300 of this embodiment is provided with a quadrilateral flat plate evaporator 382, ​​which is placed vertically inside the cavity and parallel to the front panel 311. The air inlet 330 is arranged on the rear panel 315 of the rear shell 312, that is, the air is inletted from one side. In other words, the flat plate evaporator 382 is arranged corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can be heat exchanged through the flat plate evaporator 382. The air after heat exchange enters the air inlet channel 11 through the inlet 522 at the rear of the volute 520, and then enters between the multiple annular discs of the laminar fan 100. Finally, the laminar wind generated by the laminar fan 100 flows to the air outlet 320 through the gap 710.

[0069] Embodiment 4: Figures 13 to 16As shown, the wall-mounted air conditioner indoor unit 300 of this embodiment is provided with a circular flat plate evaporator 382, ​​which is placed vertically inside the cavity and parallel to the rear panel 315. The air inlet 330 is provided on the rear panel 315 of the rear shell 312, i.e., the air is inletted from one side. In other words, the flat plate evaporator 382 is provided corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can be heat exchanged through the flat plate evaporator 382. The air after heat exchange enters the air inlet channel 11 through the inlet 522 at the rear of the volute 520, and then enters between the multiple annular discs of the laminar fan 100. Finally, the laminar wind generated by the laminar fan 100 flows to the air outlet 320 through the gap 710.

[0070] The flat plate evaporator 382 in the third embodiment and the fourth embodiment differs only in shape. The shape of the flat plate evaporator 382 can be set to correspond to the shape of the rear panel 315. For example, if the rear panel 315 in the third embodiment is a quadrilateral, the flat plate evaporator 382 can be set to a quadrilateral; if the rear panel 315 in the fourth embodiment is circular, the flat plate evaporator 382 can be set to a circular shape.

[0071] like Fig.17 As shown, the centers of the multiple annular discs 10 jointly form an air inlet channel 11 to allow air outside the laminar fan 100 to enter. The gaps between the multiple annular discs 10 form multiple exhaust ports 12 for laminar wind to blow out. The process of the air boundary layer 13 rotating from the inside to the outside to form laminar wind is centrifugal motion, so the speed when leaving the exhaust port 12 is greater than the speed when entering the air inlet channel 11. The pressure difference between the exhaust port 12 of the laminar fan 100 and the inlet of the air inlet channel 11 is the wind pressure. The multiple exhaust ports 12 formed by the gaps between the multiple annular discs 10 can enable the laminar fan 100 to achieve 360° air outlet, and then flow to the air outlet 320 through the gap 710 formed by the circumference of the laminar fan 100 and the inner wall of the front part of the volute 520, and the air outlet is uniform and soft, meeting the user's comfort needs.

[0072] The air supply principle of the laminar flow fan 100 is mainly derived from the "Tesla turbine" discovered by Nikola Tesla. The Tesla turbine mainly uses the "laminar boundary layer effect" or "viscous effect" of the fluid to achieve the purpose of doing work on the "turbine disc". The laminar flow fan 100 of this embodiment drives the driving disc 30 through the laminar flow motor 20, and the driving disc 30 drives multiple annular discs 10 to rotate at high speed. The air in the intervals between the annular discs 10 contacts and moves with each other. Then, the air boundary layer 13 close to the surface of each annular disc 10 is driven by the rotating annular disc 10 to rotate from the inside to the outside to form a laminar wind due to the viscous shear force τ.

[0073] Fig.19The diagram shows the viscous shear force distribution τ(y) and velocity distribution u(y) on the air boundary layer 13. The viscous shear force on the air boundary layer 13 is actually the resistance generated by each annular disk 10 on the air boundary layer 13. Fig.19 The horizontal axis in refers to the distance in the moving direction of the air boundary layer 13, and the vertical axis refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. e is the air velocity at each point in the air boundary layer 13, δ is the thickness of the air boundary layer 13, τ w is the viscous shear force at the surface of the annular disk 10. The variable y in τ(y) and u(y) refers to the height of the cross section of the air boundary layer 13 in the direction perpendicular to the moving direction, and L is the distance between a certain point on the inner circumference of the annular disk 10 and a certain point on the surface of the annular disk 10. Then τ(y) is the distribution of the viscous shear force when the height of the cross section of the air boundary layer 13 is y at the distance L; u(y) is the velocity distribution when the height of the cross section of the air boundary layer 13 is y at the distance L.

[0074] The wall-mounted air conditioner indoor unit 300 may further include: a fixing plate 340 and a fixing bracket 350. A plurality of reinforcing ribs 341 are provided on one side of the fixing plate 340, and a plurality of slots (not shown in the figure) are provided on the other side. The reinforcing ribs 341 can effectively improve the firmness of the fixing plate 340. The fixing bracket 350 is provided with a plurality of claws 351 corresponding to the plurality of slots on one side of the fixing plate 340, so that the laminar flow motor 20 can be fixed between the fixing bracket 350 and the fixing plate 340 after the plurality of claws 351 are respectively screwed to the plurality of slots. Figure 20 to Figure 23 In the laminar flow fan 100 shown, a groove 32 is formed at the center of the driving disk 30 toward the plurality of annular disks 10 , and the laminar flow motor 20 is fixedly disposed in the groove 32 of the driving disk 30 .

[0075] The wall-mounted air conditioner indoor unit 300 may further include a shielding member 720, which is disposed on the front side of the fixing plate 340. Figures 1 to 12 As shown, the front part of the housing 310 is a front panel 311, the center of the front panel 311 has a gap 750, and the shielding member 720 and the front panel 311 together define the air outlet 320. In a specific embodiment, the center of the front panel 311 may have a circular gap 750, and the shielding member 720 and the front panel 311 together define the annular air outlet 320. It should be noted that the diameter of the circular gap 750 is larger than the outer diameter of the annular disc 10, and preferably, is the same as the front aperture of the volute 520. Figures 13 to 16 As shown, the housing 310 may also include only the rear shell 312 , and the front portion of the rear shell 312 and the shielding member 720 together define the air outlet 320 .

[0076] Fig.24 3 is a schematic diagram of the connection between the laminar flow fan 100 having a driving disk 30 with a conical protrusion 31 and the laminar flow motor 20. Fig.25 yes Fig.24 A schematic structural diagram of the middle laminar flow fan 100 from another perspective, Fig.26 yes Fig.24 Schematic diagram of a cross-section of a mid-flow fan 100 . Figure 24 to Figure 26 The surface of the driving disk 30 of the laminar flow fan 100 facing the laminar flow motor 20 is flat, and the surface facing the plurality of annular disks 10 has a conical protrusion 31 to guide the air flow entering the laminar flow fan 100 and assist in forming laminar wind.

[0077] The main function of the driving disc 30 is to fix the laminar flow motor 20 and connect with the multiple annular discs 10 through a connecting piece, so that the multiple annular discs 10 can be driven to rotate when the laminar flow motor 20 drives the driving disc 30 to rotate. Figure 24 to Figure 26 In the laminar flow fan shown, since the surface of the driving disc 30 facing the laminar flow motor 20 is a plane, the laminar flow motor 20 is fixedly arranged on one side of the plane of the driving disc 30. Figure 24 to Figure 26 The driving disk 30 of the laminar fan 100 shown has a conical protrusion 31 on the surface facing the multiple annular disks 10, which can effectively guide the air entering the laminar fan 100 through the air inlet channel 11 into the gaps between the annular disks 10, thereby improving the efficiency of forming laminar wind.

[0078] In a preferred embodiment, the connecting member is a connecting piece 40, and the cross section of the connecting piece 40 has two curves arranged in sequence along the direction of rotation of the annular disc 10, and the chord length of the two curves is linearly related to the air volume generated by the laminar flow fan 100. The connecting piece 40 can be provided in plurality, and evenly spaced through the driving disc 30 and the plurality of annular discs 10. The plurality of connecting pieces 40 evenly spaced through the driving disc 30 and the plurality of annular discs 10 can ensure a stable connection between the driving disc 30 and the plurality of annular discs 10, thereby ensuring that when the laminar flow motor 20 drives the driving disc 30 to rotate, the driving disc 30 can stably drive the plurality of annular discs 10 to rotate, thereby improving the working reliability of the laminar flow fan 100.

[0079] It should be noted that the two curves 41 and 42 can be arcs, non-arc arcs, straight lines, etc., and a straight line can be regarded as a special curve. When the distance between the two endpoints of the curve 41 is the same as the distance between the two endpoints of the curve 42, the length of the chord 51 can be the distance between the two endpoints of the curve 41 or the curve 42. When the distance between the two endpoints of the curve 41 is different from the distance between the two endpoints of the curve 42, if the two ends of the curve 41 and the curve 42 do not intersect, the length of the chord 51 can be the length of the line connecting the midpoints of the cross section of the connecting piece 40 excluding the curves 41 and 42; if the curve 41 and the curve 42 intersect at only one end, the length of the chord 51 can be the length of the line connecting the midpoint of the cross section of the connecting piece 40 excluding the curves 41 and 42 and the intersecting endpoints.

[0080] like Fig.26 As shown, the connecting piece 40 can be a double arc blade 401, whose cross section has two arcs arranged in sequence along the direction of rotation of the annular disk 10: an inner arc 41 and a back arc 42, and the inner arc 41 and the back arc 42 both protrude in the direction of rotation of the annular disk 10, have the same center and are arranged in parallel. Fig.26 In fact, what is shown is a cross-sectional schematic diagram when looking down at the laminar flow fan 100. The laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the convex directions of the back arc 42 and the inner arc 41 are consistent with the rotation direction of the annular disk 10. In some other embodiments, the laminar flow motor 20 can also drive the annular disk 10 to rotate counterclockwise, and the convex directions of the back arc 42 and the inner arc 41 can be consistent with the rotation direction of the annular disk 10. Fig.26 The opposite of what is shown in .

[0081] Fig. 27 yes Fig.26 A schematic diagram showing the relationship between the length of the chord line 51 of the middle connecting piece 40 and the wind volume and wind pressure. Fig.26 The connecting piece 40 of the middle laminar flow fan 100 is a double arc blade 401 , the distance between the two end points of the inner arc 41 is the same as the distance between the two end points of the back arc 42 , and the length of the chord 51 can be the distance between the two end points of the inner arc 41 or the back arc 42 . Fig. 27 The middle horizontal axis Bladechord refers to the length of the chord 51 of the connecting piece 40 of the laminar flow fan 100, the left vertical axis Mass flow rate refers to the air volume, and the right vertical axis Pressure rise refers to the wind pressure. Specifically, Fig. 27The diagram shows the relationship between the length of the chord 51 and the air volume and air pressure when the outer diameter, inner diameter, number of layers, spacing, thickness, installation angle of the connecting piece 40, and rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged. The installation angle of the connecting piece 40 of the present embodiment can be: on the same cross section of the connecting piece 40 and the annular disk 10, the angle formed by the chord 51 between the two end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord 51.

[0082] When all the above-mentioned parameters remain unchanged, 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 disk 10 is 8, the spacing of the annular disk 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the installation angle of the connecting plate 40 is 25.5°, and the speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). It can be found that after increasing the length of the chord 51, the air volume and air pressure are greatly improved, and are basically linear. Considering that the internal space of the wall-mounted air conditioner indoor unit 300 is limited, the overall occupied volume of the laminar flow fan 100 needs to be constrained to a certain extent. When the outer diameter and inner diameter of the annular disk 10 are constant, although the longer the chord 51 is, the greater the air volume and air pressure of the laminar flow fan 100 are, the length of the chord 51 must be constrained to a certain extent to prevent the connecting sheet 10 from excessively penetrating the annular disk 10, which would cause the stability of the laminar flow fan 100 to decrease. In short, the length of the chord 51 can be set to the maximum achievable range, so that the air volume and air pressure of the laminar flow fan 100 can meet the user's usage requirements.

[0083] Therefore, in the above preferred embodiment, under the premise of ensuring the stability of the laminar flow fan 100, the length of the chord 51 is set to the maximum range of 40 mm to 42 mm. Moreover, when the length of the chord 51 is set to 42 mm, the air volume of the laminar flow fan 100 can reach 1741 m 3 / h, the wind pressure can reach 118.9Pa, which can fully meet the user's usage requirements. At this time, the difference between the outer diameter and the inner diameter of the annular disk 10 is 60mm, and the length of the chord 51 is set to 42mm, so that the two ends of the inner arc 41 and the back arc 42 are about 9mm away from the inner circumference and the outer circumference of the annular disk 10, respectively. Under the premise of ensuring the stability of the laminar flow fan 100, the length of the chord 51 is set to the maximum achievable range, so that the air volume and wind pressure of the laminar flow fan 100 can meet the user's usage requirements.

[0084] Fig.28 yes Fig.26 Schematic diagram of the relationship between the installation angle α of the middle connecting piece 40 and the air volume and air pressure. Fig.26The connecting piece 40 of the middle laminar flow fan 100 can be a double arc blade 401. The installation angle α of the connecting piece 40 actually refers to: on the same cross-section of the double arc blade 401 and the annular disk 10, the angle formed by the chord 51 between the two end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord 51. Fig.28 The middle horizontal axis Metal angle (α) refers to the installation angle of the double arc blade 401 of the laminar flow fan 100, that is, the angle formed by the chord 51 between the two end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord 51 on the same cross section of the double arc blade 401 and the annular disk 10. The left vertical axis Mass flow rate refers to the air volume, and the right vertical axis Pressure rise refers to the wind pressure. Specifically, Fig.28 The diagram shows the relationship between the installation angle α and the air volume and air pressure when the outer diameter, inner diameter, number of layers, spacing, thickness, chord length of the double arc blade 401, and the rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged. The chord length of the double arc blade 401 of this embodiment can be the straight-line distance between the two end points of the inner arc 41 or the back arc 42.

[0085] When all the above-mentioned parameters remain unchanged, for example, in a preferred embodiment, the outer diameter of the annular disk 10 of the laminar fan 100 is 175㎜, the inner diameter of the annular disk 10 is 115㎜, the number of layers of the annular disk 10 is 8, the spacing between the annular disks 10 is 13.75㎜, the thickness of the annular disk 10 is 2㎜, the chord length of the double circular blade 401 is 35㎜, and the rotation speed of the laminar motor 20 is 1000rpm (revolutions per minute). At this time, considering the comprehensive air volume and wind pressure, the installation angle α of the double circular blade 401 can be set to -5° to 55°. It should be noted that, when the chord 51 between the two end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord 51 in the direction of rotation of the annular disk 10 are sequentially, the installation angle α is a positive number; when the chord 51 between the two end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord 51 in the direction of rotation of the annular disk 10 are sequentially, the installation angle α is a negative number.

[0086] Fig.29 is a schematic cross-sectional view of a laminar flow fan 100 having an aero blade 402, Fig.30 yes Fig.29Schematic diagram of the relationship between the installation angle α of the aviation blade 402 of the middle laminar flow fan 100 and the air volume and wind pressure. In a specific embodiment, the connecting piece 40 can also be an aviation blade 402. The cross section of the aviation blade 402 has a double arc protruding in the direction of rotation of the annular disc 10, and the double arc includes an inner arc 41 and a back arc 42 sequentially arranged along the direction of rotation of the annular disc 10, and the inner arc 41 and the back arc 42 have different centers and intersect at both ends. Fig.29 In fact, what is shown is a cross-sectional schematic diagram when looking down at the laminar flow fan 100. The laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the convex directions of the back arc 42 and the inner arc 41 are consistent with the rotation direction of the annular disk 10. In some other embodiments, the laminar flow motor 20 can also drive the annular disk 10 to rotate counterclockwise, and the convex directions of the back arc 42 and the inner arc 41 can be consistent with the rotation direction of the annular disk 10. Fig.29 The opposite of what is shown in .

[0087] Fig.30 The installation angle α of the aviation blade 402 actually refers to: on the same cross-section of the aviation blade 402 and the annular disk 10, the angle formed by the chord 51 between the two end points 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 51. Fig.30 The middle horizontal axis Metal angle (α) refers to the installation angle of the aviation blade 402 of the laminar flow fan 100, that is, the angle formed by the chord 51 between the two end points 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 51 on the same cross section of the aviation blade 402 and the annular disk 10. The left vertical axis Mass flow rate refers to the air volume, and the right vertical axis Pressure rise refers to the wind pressure. Specifically, Fig.30 The diagram shows the relationship between the installation angle α and the air volume and air pressure when the outer diameter, inner diameter, number of layers, spacing, thickness, chord length of the aviation blade 402, and the rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged. The chord length of the aviation blade 402 of this embodiment can be the straight line distance between the two end points of the inner arc 41 or the back arc 42, that is, the length of the chord line 51.

[0088] When all the above-mentioned parameters remain unchanged, for example, in a preferred embodiment, the outer diameter of the annular disk 10 of the laminar fan 100 is 175㎜, the inner diameter of the annular disk 10 is 115㎜, the number of layers of the annular disk 10 is 8, the spacing between the annular disks 10 is 13.75㎜, the thickness of the annular disk 10 is 2㎜, the chord length of the aviation blade 402 is 35㎜, and the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute). At this time, considering the comprehensive air volume and wind pressure, the installation angle α of the aviation blade 402 can be set to -50° to 15°.

[0089] Fig.31 Schematic diagram of the connection between a laminar flow fan 100 with a plurality of annular discs 10 with gradually varying spacing and a laminar flow motor 20. Fig.32 yes Fig.31 A schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 from another perspective, Fig.33 yes Fig.31 Schematic diagram of the relationship between the gradual change in the spacing between the multiple annular disks 10 of the middle laminar flow fan 100 and the air volume and air pressure.

[0090] like Fig.31 and Fig.32 As shown, the connecting member of the laminar flow fan 100 can also be a connecting rod 60. The connecting rod 60 can also be set to multiple, and evenly spaced to penetrate the driving disc 30 and the multiple annular discs 10 to ensure that the connection relationship between the driving disc 30 and the multiple annular discs 10 is stable, thereby ensuring that when the laminar flow motor 20 drives the driving disc 30 to rotate, the driving disc 30 can stably drive the multiple annular discs 10 to rotate, thereby improving the working reliability of the laminar flow fan 100. As the spacing between two adjacent annular discs 10 gradually increases from one side away from the driving disc 30 to the other side, the air volume of the laminar flow fan 100 will be effectively increased, so that the air outlet of the laminar flow fan 100 meets the user's use requirements. In a preferred embodiment, the spacing between two adjacent annular discs 10 has the same change, that is, the spacing between two adjacent annular discs 10 increases by the same value from one side away from the driving disc 30 to the other side.

[0091] Fig.33 The middle horizontal axis "shrinking uniform expanding Plate distance increase" refers to the change in the distance between two adjacent annular discs 10 along the direction from one side away from the driving disc 30 to the other side, the left vertical axis "Mass flow rate" refers to the air volume, and the right vertical axis "Pressure rise" refers to the wind pressure. In addition, the distance between two adjacent annular discs 10 has the same change, that is, the distance between two adjacent annular discs 10 increases or decreases by the same value.

[0092] Specifically, Fig.33 The figure shows the relationship between the gradual change of the spacing between the multiple annular disks 10 and the air volume and air pressure when the outer diameter, inner diameter, number, thickness and speed of the annular disk 10 of the laminar flow fan 100 remain unchanged. Fig.33As shown, when all the above-mentioned parameters remain unchanged, the distance between each two adjacent annular disks 10 in the plurality of annular disks 10 gradually changes from the side away from the driving disk 30 to the other side, which has a greater impact on the air volume and a small impact on the wind pressure. When the change in the distance between two adjacent annular disks 10 along the direction from the side away from the driving disk 30 to the other side represented by the abscissa axis is a positive number, it means that the distance 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 change in the distance between two adjacent annular disks 10 along the direction from the side away from the driving disk 30 to the other side represented by the abscissa axis is a negative number, it means that the distance between each two adjacent annular disks 10 in the plurality of annular disks 10 gradually decreases from the side away from the driving disk 30 to the other side.

[0093] Depend on Fig.33 It can be seen that when the distance between each two adjacent annular discs 10 in the plurality of annular discs 10 varies by -1 mm, 1 mm, and 2 mm, the air volume and air pressure of the laminar flow fan 100 are greatly improved. Taking the air volume and air pressure of the laminar flow fan 100 into comprehensive consideration, the distance between each two adjacent annular discs 10 in the plurality of annular discs 10 is set to gradually increase from one side away from the driving disc 30 to the other side. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar 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 laminar flow motor 20 is 1000 rpm (revolutions per minute). At this time, taking into account the air volume and air pressure of the laminar flow fan 100, the spacing between two adjacent annular disks 10 among the 8 annular disks 10 can be set to 13.75 mm, 14.75 mm, 15.75 mm, 16.75 mm, 17.75 mm, 18.75 mm, and 19.75 mm from one side away from the driving disk 30 to the other side, that is, the spacing between two adjacent annular disks 10 increases by 1 mm from one side away from the driving disk 30 to the other side. It should be noted that the distance between two adjacent annular disks 10 among the multiple annular disks 10 gradually increases from one 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 airflow in the air inlet channel 11.

[0094] Fig.34 is a partial cross-sectional view of a laminar flow fan 100 with a plurality of annular disks 10 having gradually changing inner diameters. Fig.35 yes Fig.34Schematic diagram of the relationship between the gradual change of the inner diameter of the multiple annular discs 10 of the laminar flow fan 100 and the air volume and air pressure. As the inner diameter of the multiple annular discs 10 gradually decreases from one side away from the driving disc 30 to the other side, the air volume of the laminar flow fan 100 will be effectively increased, so that the air output of the laminar flow fan 100 meets the user's usage requirements. In a preferred embodiment, the inner diameter change of two adjacent annular discs 10 is the same, that is, the inner diameter of the multiple annular discs 10 decreases by the same amount from one side away from the driving disc 30 to the other side.

[0095] Fig.35 The middle horizontal axis "shrinking uniform expanding inner radius increase" refers to the change in the inner diameter of each annular disk 10 and the inner diameter of the adjacent annular disk 10 below, the left vertical axis "Mass flow rate" refers to the air volume, and the right vertical axis "Pressure rise" refers to the wind pressure. Specifically,

[0096] Fig.35 The figure shows the relationship between the gradual change of the inner diameter of the plurality of annular disks 10 and the air volume and air pressure when the outer diameter, spacing, number, thickness of the annular disks 10 of the laminar flow fan 100 and the speed of the laminar flow motor 20 remain unchanged. Fig.35 As shown, when all the above-mentioned parameters remain unchanged, the gradual change of the inner diameter of the plurality of annular disks 10 from one side away from the driving disk 30 to the other side has a greater impact on the air volume, but has a small impact on the air pressure. When the amount of change between the inner diameter of each annular disk 10 represented by the abscissa axis and the inner diameter of the annular disk 10 adjacent below is a positive number, it means that the inner diameter of the plurality of annular disks 10 gradually increases from one side away from the driving disk 30 to the other side; when the amount of change between the inner diameter of each annular disk 10 represented by the abscissa axis and the inner diameter of the annular disk 10 adjacent below is a negative number, it means that the inner diameter of the plurality of annular disks 10 gradually decreases from one side away from the driving disk 30 to the other side.

[0097] Depend on Fig.35 It can be seen that when the inner diameter of the plurality of annular discs 10 gradually decreases from one side away from the driving disc 30 to the other side, the air volume of the laminar flow fan 100 increases and the air pressure decreases slightly; when the inner diameter of the plurality of annular discs 10 gradually increases from one side away from the driving disc 30 to the other side, the air pressure of the laminar flow fan 100 increases slightly and the air volume decreases a lot. Therefore, considering the air volume and air pressure of the laminar flow fan 100 comprehensively, the inner diameter of the plurality of annular discs 10 is set to gradually decrease from one side away from the driving disc 30 to the other side.

[0098] In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the spacing between the annular disks 10 is 13.75 mm, the number of the annular disks 10 is 8, the thickness of the annular disks 10 is 2 mm, and the rotation speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). At this time, considering the air volume and air pressure of the laminar flow fan 100 comprehensively, the inner diameter of each annular disk 10 can be set to a change of -5 mm with respect to the inner diameter of the adjacent annular disk 10 below. That is, the inner diameters of the eight annular disks 10 can be set to 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, and 80mm, respectively, from the side away from the driving disk 30 to the other side. The inner diameter of each annular disk 10 is 5mm smaller than the inner diameter of the adjacent annular disk 10 below. It should be noted that the spacing of the annular disks 10 mentioned above specifically refers to the spacing between two adjacent annular disks 10. It should also be emphasized that the inner diameters of the multiple annular disks 10 gradually decrease from the side away from the driving disk 30 to the other side, which actually means that the inner diameters of the multiple annular disks 10 gradually decrease along the direction of the airflow in the air inlet channel 11.

[0099] Fig.36 1 is a schematic diagram of the central angle of a line connecting the inner and outer diameters of a plurality of annular disks 10 of a laminar flow fan 100 in which the annular disks 10 are arc-shaped disks on the same longitudinal section passing through the central axis. Fig.37 yes Fig.36 Schematic diagram of the relationship between the central angle of the circle and the air volume and pressure. Fig.36 Each annular disc 10 of the laminar flow fan 100 is an arc-shaped disc that gradually approaches the driving disc 30 from the center to the edge and bulges toward one side of the driving disc 30. Compared with a flat disc, an arc-shaped disc can make the angle at which the external air enters the laminar flow fan 100 more consistent with the fluid flow, thereby being more conducive to the external air entering the laminar flow fan 100 and effectively reducing the air volume loss. In addition, the inner diameter of the plurality of annular discs 10 gradually decreases from one side away from the driving disc 30 to the other side, and the inner and outer diameter lines of the plurality of annular discs 10 on the same longitudinal section passing through the central axis form a central angle θ.

[0100] Fig.37 The middle horizontal axis θ refers to the central angle of the line connecting the inner and outer diameters of the plurality of annular disks 10 on the same longitudinal section passing through the central axis, the left longitudinal axis Mass flow rate refers to the air volume, and the right longitudinal axis Pressure rise refers to the air pressure. Specifically, Fig.37 The diagram shows the relationship between the central angle θ and the air volume and air pressure when the outer diameter, number of layers, spacing, thickness of the annular disk 10 of the laminar flow fan 100 and the speed of the laminar flow motor 20 remain unchanged. Fig.37As shown, when all the above-mentioned parameters remain unchanged, as the central angle θ gradually increases, the air volume of the laminar fan 100 first increases and then decreases, while the wind pressure rises slightly. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar fan 100 is 175㎜, the number of layers of the annular disk 10 is 10, the spacing between the annular disks 10 is 13.75㎜, the thickness of the annular disk 10 is 2㎜, and the rotation speed of the laminar motor 20 is 1000rpm (revolutions per minute). At this time, considering the comprehensive air volume and wind pressure, the central angle θ of the line connecting the inner and outer diameters of multiple annular disks 10 on the same longitudinal section passing through the central axis can be set to 9° to 30°. And as Fig.37 As shown, when the central angle θ is set to 15°, the air volume of the laminar flow fan 100 reaches a maximum value.

[0101] The wall-mounted air conditioner indoor unit 300 of this embodiment comprises: a housing 310, which defines a cavity inside and an air outlet 320 at the front of the housing 310; a laminar flow fan 100, which is arranged inside the cavity and comprises: a plurality of annular discs 10, which are arranged in parallel and spaced apart from each other and have the same central axis, and the centers of the plurality of annular discs 10 jointly form an air inlet channel 11, and the air in the cavity enters the gaps between the plurality of annular discs 10 through the air inlet channel 11; and a laminar flow motor 20, which is configured to drive the plurality of annular discs 10 to rotate so that the air boundary layer 13 near the surface of the plurality of annular discs 10 rotates and moves from the inside to the outside, thereby forming laminar wind to be blown out from the air outlet 320. The wall-mounted air conditioner indoor unit 300 is provided with a laminar flow fan 100, which realizes laminar air supply through the viscosity effect, and the air supply process has low noise and high air volume, which effectively improves the user experience.

[0102] Furthermore, in the wall-mounted air conditioner indoor unit 300 of the present embodiment, the laminar flow fan 100 further includes: a driving disc 30, which is arranged in parallel and at intervals on one side of the plurality of annular discs 10; and a connecting member, which penetrates the driving disc 30 and the plurality of annular discs 10 to connect the plurality of annular discs 10 to the driving disc 30, and the laminar flow motor 20 is further configured to: directly drive the driving disc 30 to rotate, and then the driving disc 30 drives the plurality of annular discs 10 to rotate. The wall-mounted air conditioner indoor unit 300 further includes: a fixing plate 340, which is provided with a plurality of reinforcing ribs 341 on one side and a plurality of slots on the other side; and a fixing frame 350, which is provided with a plurality of claws 351 corresponding to the plurality of slots on one side of the fixing plate 340, so that the laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340 after the plurality of claws 351 are respectively screwed to the plurality of slots. In addition, the laminar flow motor 20 is also fixed to the driving disc 30 of the laminar flow fan 100, which can effectively enhance the connection firmness between the laminar flow fan 100 and the laminar flow motor 20 and improve the overall working reliability.

[0103] Furthermore, in the wall-mounted air conditioner indoor unit 300 of the present embodiment, the multiple annular discs 10 of the laminar flow fan 100 can be arranged according to one or more of the following structures: the inner diameter of the multiple annular discs 10 gradually decreases from one side away from the driving disc 30 to the other side; the spacing between two adjacent annular discs 10 in the multiple annular discs 10 gradually increases from one side away from the driving disc 30 to the other side; each annular disc 10 is an arc-shaped disc that gradually approaches the driving disc 30 from the center to the edge and bulges toward one side of the driving disc 30. The above-mentioned forms of arranging multiple annular discs 10 can effectively increase the air volume of the laminar flow fan 100, so that the air outlet of the laminar flow fan 100 meets the user's usage requirements. In addition, the connecting member can be a connecting plate 40, and the cross section of the connecting plate 40 has two sections of curves arranged in sequence along the direction of rotation of the annular disc 10, and the chord length of the two sections of the curve is linearly related to the air volume generated by the laminar flow fan 100. The setting of the connecting piece 40 can effectively increase the wind pressure of the laminar flow fan 100, so that after the laminar flow wind is blown out through the gaps between the multiple annular discs 10, due to the pressure difference, the air outside the laminar flow fan 100 is pressed into the annular disc 10 through the air inlet channel 11, and this cycle is repeated, thereby forming a laminar air circulation. The circumference of the laminar flow fan 100 of the wall-mounted air conditioner indoor unit 300 and the inner wall of the front part of the volute 520 accommodating the laminar flow fan 100 form a gap 710, so that the laminar flow wind flows to the air outlet 320 through the gap 710, so that the air outlet of the wall-mounted air conditioner indoor unit 300 is uniform and soft, meeting the comfort requirements of the user.

[0104] Those skilled in the art should understand that, unless otherwise specified, the terms "up", "down", "left", "right", "front" and "back" used to indicate orientation or positional relationships in the embodiments of the present invention are based on the actual usage status of the wall-mounted air conditioner indoor unit 300. These terms are only used to facilitate the 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. Therefore, they cannot be understood as limitations on the present invention.

[0105] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit, comprising: A shell body, the interior of which defines a cavity, and the front portion of the shell body defines an air outlet; a laminar flow fan, arranged inside the cavity, comprising: a plurality of annular discs, arranged in parallel and spaced apart from each other and having the same central axis, wherein the centers of the plurality of annular discs jointly form an air inlet channel, and the air in the cavity enters the gaps between the plurality of annular discs through the air inlet channel; and The laminar flow motor is configured to drive the plurality of annular discs to rotate so that the air boundary layer near the surfaces of the plurality of annular discs rotates and moves from the inside to the outside, thereby forming a laminar flow wind to be blown out from the air outlet. The laminar flow fan further includes: a driving disc arranged in parallel and at intervals on one side of the plurality of annular discs; and a connecting member penetrating the driving disc and the plurality of annular discs to connect the plurality of annular discs to the driving disc; The connecting piece is a connecting plate, and the cross section of the connecting plate has two curved lines arranged in sequence along the rotation direction of the annular disc, and the chord lengths of the two curved lines are linearly related to the air volume generated by the laminar flow fan. The evaporator is arranged inside the cavity corresponding to the air inlet and is configured to perform heat exchange on the air entering the cavity through the air inlet.

2. The wall-mounted air conditioner indoor unit according to claim 1, further comprising: a volute housing the laminar flow fan, and The rear portion of the volute has an inlet corresponding to the air inlet passage, so that the air in the cavity enters the air inlet passage through the inlet; A gap is formed between the circumference of the laminar flow fan and the inner wall of the front part of the volute, so that the laminar flow wind flows toward the air outlet through the gap.

3. The wall-mounted air conditioner indoor unit according to claim 2, further comprising: A fixing plate, one side of which is provided with a plurality of reinforcing ribs, and the other side of which is provided with a plurality of slots; and A fixing frame is provided with a plurality of claws corresponding to the plurality of slots on one side facing the fixing plate, so as to fix the laminar flow motor between the fixing frame and the fixing plate after the plurality of claws are respectively screwed to the plurality of slots.

4. The wall-mounted air conditioner indoor unit according to claim 3, further comprising: A shielding member is disposed on the front side of the fixing plate, and The front part of the shell is a front panel, the center of the front panel has a gap, and the shielding member and the front panel together define the air outlet.

5. The wall-mounted air conditioner indoor unit according to claim 1, wherein: The laminar flow motor is further configured to directly drive the driving disc to rotate, and then the driving disc drives the plurality of annular discs to rotate.

6. The wall-mounted air conditioner indoor unit according to claim 5, wherein: A groove is formed at the center of the driving disk toward the plurality of annular disks, and the laminar flow motor is fixedly disposed in the groove.

7. The wall-mounted air conditioner indoor unit according to claim 5, wherein: The surface of the driving disc facing the laminar flow motor is a plane, and the surface facing the plurality of annular discs has a conical protrusion to guide the air flow entering the laminar flow fan and assist in forming the laminar wind.

8. The wall-mounted air conditioner indoor unit according to claim 1, wherein: The cross section of the connecting plate has two arcs arranged in sequence along the rotation direction of the annular disk: an inner arc and a back arc, and the inner arc and the back arc both protrude in the rotation direction of the annular disk, and the inner arc and the back arc have the same center and are arranged in parallel or have different centers and intersect at both ends.

9. The wall-mounted air conditioner indoor unit according to claim 1, wherein: The plurality of annular discs are arranged according to one or more of the following structures: The inner diameters of the plurality of annular discs gradually decrease from one side away from the driving disc to the other side; The distance between two adjacent annular discs in the plurality of annular discs gradually increases from one side away from the driving disc to the other side; Each of the annular discs is an arc-shaped disc which gradually approaches the driving disc from the center to the edge and bulges toward one side of the driving disc.

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