WO2020147750A1

WO2020147750A1 - Vertical air conditioner indoor unit

Info

Publication number: WO2020147750A1
Application number: PCT/CN2020/072254
Authority: WO
Inventors: 李英舒; 吴丽琴; 吕静静; 古康; 王永涛
Original assignee: 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2019-01-17
Filing date: 2020-01-15
Publication date: 2020-07-23
Also published as: CN111442360A

Abstract

Disclosed is a vertical air conditioner indoor unit (300), comprising: a housing (310), wherein a cavity is defined therein, an upper part and a lower part of the housing are respectively provided with an air outlet (320), the middle part is provided with an air inlet (330), and the housing (310) comprises a front panel (311), a rear housing (312), a top plate (313) and a bottom plate (314); a laminar flow fan (110), provided in the cavity, and configured to use the viscosity effect to make some of the air in the cavity form laminar air and blow the laminar air out of the air outlet (320) of the upper part; and a single suction centrifugal fan (510), provided below the laminar flow fan (110), axially perpendicular to the front panel (311) and configured to drive some of the air in the cavity to be blown out of the air outlet (320) of the lower part. The vertical air conditioner indoor unit (300) is provided with the laminar flow fan (110), the laminar air supply for the upper part is achieved by means of the viscous effect, the noise is small and the air volume is high during air supply, thereby improving the user experience; and the vertical air conditioner indoor unit is further provided with the single suction centrifugal fan (510), such that the air volume and air pressure of the lower portion can be improved.

Description

Vertical air conditioner indoor unit

Technical field

The invention relates to the technical field of household appliances, in particular to a vertical air conditioner indoor unit.

Background technique

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 an adaptable temperature when the ambient temperature is too high or too low.

The current air conditioning adjusting devices mainly include various types of air conditioners and fans, but most users believe that the hot or cold air generated by the current air conditioners is unevenly distributed in a room or a closed space, and has certain layout limitations. In addition, the fan used in the indoor unit of the air conditioner is mainly a cross flow fan. Although the cross flow fan has low noise, the wind pressure is too small and the air supply distance is short. In addition, the overall volume of the cross flow fan is large, but the actual effective volume is small, resulting in a waste of space.

Summary of the invention

An object of the present invention is to provide a vertical air conditioner indoor unit with low noise, high air volume, and high air pressure.

A further object of the present invention is to enable the indoor unit of the vertical air conditioner to realize 360° air supply, avoid direct wind blowing to the user, and improve the user experience.

In particular, the present invention provides an indoor unit of a vertical air conditioner, comprising: a housing with a cavity defined therein, and an air outlet is opened at the upper and lower parts of the housing, an air inlet is opened at the middle, and the housing includes a front Panel, rear shell, top plate and bottom plate; laminar flow fan, set inside the cavity, configured to use the viscous effect to make part of the air in the cavity form laminar air, and make the laminar air blow out from the upper air outlet; and single suction centrifugal The fan is arranged under the laminar flow fan, and its axial direction is perpendicular to the front panel and is configured to drive part of the air in the cavity to blow out from the lower air outlet.

Optionally, the indoor unit of the vertical air conditioner further includes: a volute, which has an inlet and an outlet, and the outlet is arranged opposite to the lower air outlet; the single-suction centrifugal fan is arranged inside the volute, and is also configured to drive the cavity Part of the air enters the volute from the inlet, and is discharged from the outlet after two turns in the volute, and then blows out through the lower air outlet.

Optionally, the laminar flow fan includes: a laminar flow fan, which is arranged inside the cavity corresponding to the upper air outlet; the laminar flow fan includes: a plurality of annular discs, which are arranged in parallel with each other and have the same central axis, and The center of the annular discs is jointly formed with an air inlet channel, and the air in the cavity enters the gap between the plurality of annular discs through the air inlet channel; and a laminar flow motor, connected to the laminar flow fan, and configured to drive the plurality of annular discs The disk rotates so that the air boundary layer close to the surface of the plurality of annular disks rotates from the inside to the outside, thereby forming a laminar wind blown out from the air outlet.

Optionally, the laminar flow fan further includes: a drive disc, which is arranged at intervals and parallel to one side of the plurality of annular discs; and a connecting member, which penetrates the drive disc and the plurality of annular discs to connect the plurality of annular discs Connected 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 a plurality of annular discs to rotate.

Optionally, the indoor unit of the vertical air conditioner further includes: a fixing plate provided with a plurality of reinforcing ribs on one side and a plurality of clamping slots on the other side; A plurality of clamping claws corresponding to each clamping slot are used to fix the laminar flow motor between the fixing frame and the fixing plate after the plurality of clamping claws are respectively screwed into the multiple clamping slots, wherein the center of the fixing frame is provided with a hole, the laminar flow motor After passing through the perforation, the output shaft is fixed with the drive disc.

Optionally, the indoor unit of the vertical air conditioner further includes: a draft ring arranged on the side of the plurality of annular disks away from the driving disc, and the draft ring is configured to guide part of the air in the cavity into the air inlet channel.

Optionally, the casing is provided with an air outlet around the laminar flow fan on its upper part; or the vertical air conditioner indoor unit further includes: a windshield, which is arranged outside the laminar flow fan and has a gap; the casing corresponds to the gap Set the air outlet at the position.

Optionally, the center of the drive disc is formed with a groove facing the plurality of annular discs, and the laminar flow motor is fixedly arranged in the groove; or the surface of the drive disc facing the laminar flow motor is flat, and the surface of the drive disc facing the plurality of annular discs is flat. The surface has conical protrusions to guide the flow of air entering the laminar fan and assist in the formation of laminar wind.

Optionally, the connecting piece is a connecting piece, and the cross section of the connecting piece has two curves arranged in sequence along the rotation direction of the annular disk, and the chord length of the two curves has a linear relationship with the air volume generated by the laminar flow fan.

Optionally, the cross section of the connecting piece has double arcs arranged in sequence along the direction of rotation of the annular disc: 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 disc. The back arcs have the same center and are arranged in parallel or have different centers and both ends intersect.

Optionally, 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 gradually increases from one side away from the drive disc to the other; each annular disc gradually approaches the drive disc from the center to the edge and protrudes toward one side of the drive disc. The arc-shaped disc.

The indoor unit of the vertical air conditioner of the present invention includes: a shell, a cavity is defined inside, an air outlet is opened at the upper and lower portions of the shell, and an air inlet is opened at the middle, and the shell includes a front panel, a rear shell, and a top panel And the bottom plate; the laminar flow fan, set inside the cavity, is configured to use the viscous effect to make part of the air in the cavity form laminar air, and make the laminar air blow out from the upper air outlet; and the single-suction centrifugal fan, set in the laminar flow Below the fan, its axial direction is perpendicular to the front panel and is configured to drive part of the air in the cavity to blow out from the lower air outlet. The indoor unit of the vertical air conditioner is equipped with a laminar flow fan, through the viscous effect to achieve laminar air supply on the upper part, the air supply process has low noise and high air volume, which effectively improves the user experience; it is also equipped with a single suction centrifugal fan, which can effectively lift the lower part The air output and wind pressure.

Further, in the vertical air conditioner indoor unit of the present invention, the casing is provided with an air outlet around the laminar flow fan on its upper part; or the vertical air conditioner indoor unit may further include: a wind shield, which is arranged outside the laminar flow fan and There is a gap; the housing is provided with an air outlet at its position corresponding to the gap, which can realize 360° four-sided air supply or three-sided air supply, two-sided air supply, and single-sided air supply on the upper part of the vertical air conditioner indoor unit. The laminar flow fan also includes: a drive disc, which is arranged in parallel at intervals on one side of the plurality of annular discs; and a connecting member, which penetrates the drive disc and the plurality of annular discs to connect the plurality of annular discs to the drive circle For the disk, the laminar flow motor is also configured to directly drive the driving disk to rotate, and then the driving disk drives a plurality of annular disks to rotate. The laminar flow motor is fixed between the fixing frame and the fixing plate, wherein a perforation is provided in the center of the fixing frame, and the output shaft of the laminar flow motor is fixed to the driving disc after passing through the perforation. It can effectively enhance the connection firmness of the laminar flow fan and the laminar flow motor, and improve the overall working reliability.

Furthermore, in the vertical air conditioner indoor unit of the present invention, the multiple annular discs of the laminar flow fan can be arranged according to one or more of the following structures: the inner diameter of the multiple annular discs is changed from the one far away from the drive disc Gradually shrink from side to side; the distance between two adjacent ring disks in the plurality of ring disks gradually increases from one side away from the driving disk to the other side; each ring disk is from the center To the arc-shaped disc with the edge gradually approaching the driving disc and protruding to one side of the driving disc. The above-mentioned forms of multiple annular disks can effectively increase the air volume of the laminar flow fan, so that the air output of the laminar flow fan meets the user's requirements. In addition, the connecting piece may be a connecting piece, and the cross section of the connecting piece has two curves arranged in sequence along the rotation direction of the annular disc, and the chord length of the two curves has a linear relationship with the air volume generated by the laminar flow fan. The setting of the connecting piece can effectively increase the wind pressure of the laminar flow fan, so that after the laminar air blows out through the gap between the multiple annular discs, due to the pressure difference, the air outside the laminar flow fan is compressed through the air inlet channel Into the annular disc, so cyclically reciprocating, thus forming a laminar air circulation. The multiple air outlets formed by the gaps between multiple annular disks can make the laminar flow fan achieve 360° air supply, avoiding the user's various discomfort symptoms caused by the direct blowing of the air conditioner, and further improving the user's use Experience.

According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will understand more about the above and other objects, advantages, and features of the present invention.

BRIEF DESCRIPTION

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but non-limiting manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

Fig. 1 is a schematic diagram of the overall structure of a vertical air conditioner indoor unit according to the first embodiment of the present invention;

Figure 2 is a partial structural diagram of the indoor unit of the vertical air conditioner in Figure 1;

Figure 3 is an exploded schematic diagram of components of the indoor unit of the vertical air conditioner in Figure 1;

4 is a schematic diagram of the overall structure of the indoor unit of a vertical air conditioner according to a second embodiment of the present invention;

Figure 5 is a partial structural diagram of the indoor unit of the vertical air conditioner in Figure 4;

Figure 6 is an exploded schematic diagram of the components of the indoor unit of the vertical air conditioner in Figure 4;

7 is a schematic diagram of the overall structure of the indoor unit of a vertical air conditioner according to a third embodiment of the present invention;

Fig. 8 is a partial structural diagram of the indoor unit of the vertical air conditioner in Fig. 7;

Figure 9 is an exploded schematic diagram of the components of the indoor unit of the vertical air conditioner in Figure 7;

10 is a schematic diagram of the overall structure of the indoor unit of a vertical air conditioner according to a fourth embodiment of the present invention;

Figure 11 is a partial structural diagram of the indoor unit of the vertical air conditioner in Figure 10;

Figure 12 is an exploded schematic diagram of components of the indoor unit of the vertical air conditioner in Figure 10;

13 is a schematic diagram of air circulation of a laminar flow fan in an indoor unit of a vertical air conditioner according to an embodiment of the present invention;

14 is a schematic diagram of the air supply principle of the laminar flow fan in the indoor unit of the vertical air conditioner according to an embodiment of the present invention;

15 is a speed distribution and force distribution diagram of the laminar flow fan in the indoor unit of a vertical air conditioner according to an embodiment of the present invention;

16 is a schematic diagram of the structure of a laminar flow fan with grooves on the driving disc;

FIG. 17 is a schematic structural diagram of the laminar flow fan in FIG. 16 from another perspective;

FIG. 18 is a schematic structural diagram of the laminar flow fan in FIG. 16 from another perspective;

Figure 19 is a cross-sectional view of the laminar flow fan in Figure 16;

20 is a schematic diagram of the connection between the laminar flow fan and the laminar flow motor in FIG. 16;

Figure 21 is an exploded schematic diagram of the components of the laminar flow motor, the fixed plate and the fixed frame;

Figure 22 is a schematic diagram of the connection between a laminar flow fan and a laminar flow motor with a conical protrusion on the drive disc;

FIG. 23 is a schematic structural diagram of the laminar flow fan in FIG. 22 from another perspective;

Figure 24 is a schematic cross-sectional view of the laminar flow fan in Figure 22;

Figure 25 is a schematic diagram of the relationship between the chord length of the connecting piece and the air volume and pressure in Figure 24;

Figure 26 is a schematic diagram of the relationship between the installation angle of the connecting piece and the air volume and pressure in Figure 24;

Figure 27 is a schematic cross-sectional view of a laminar flow fan with aviation blades;

Figure 28 is a schematic diagram of the relationship between the installation angle of the aero blades of the laminar flow fan in Figure 27 and the air volume and pressure;

FIG. 29 is a schematic diagram of the connection of a plurality of laminar flow fans with gradual pitches between annular disks and a laminar flow motor;

30 is a schematic diagram of the connection of the laminar flow fan and the laminar flow motor in FIG. 29 from another perspective;

FIG. 31 is a schematic diagram of the relationship between the gradual change in the pitch of the annular disks of the laminar flow fan in FIG. 29 and the air volume and pressure;

Figure 32 is a partial cross-sectional view of a plurality of laminar flow fans with gradual inner diameters of annular disks;

33 is a schematic diagram of the relationship between the gradual change of the inner diameter of the multiple annular disks of the laminar flow fan in FIG. 32 and the air volume and pressure;

FIG. 34 is a schematic diagram of the central angle of the inner and outer diameters of the laminar flow fan in which the annular disk is an arc-shaped disk on the same longitudinal section passing through the central axis; and

35 is a schematic diagram of the relationship between the central angle and the air volume and wind pressure in FIG. 34.

detailed description

This embodiment provides a vertical air conditioner indoor unit, which is provided with a laminar flow fan, and achieves upper laminar flow air supply through the viscous effect. The air supply process has low noise, high air volume, and high wind pressure, which effectively improves the user experience; There is also a single-suction centrifugal fan, which can effectively increase the air output and pressure at the lower part. 1 is a schematic diagram of the overall structure of a vertical air conditioner indoor unit 300 according to the first embodiment of the present invention, FIG. 2 is a partial structural diagram of the vertical air conditioner indoor unit 300 in FIG. 1, and FIG. 3 is a vertical air conditioner in FIG. An exploded schematic diagram of the components of the indoor unit 300. 4 is a schematic diagram of the overall structure of a vertical air conditioner indoor unit 300 according to the second embodiment of the present invention, FIG. 5 is a partial structural diagram of the vertical air conditioner indoor unit 300 in FIG. 4, and FIG. 6 is a vertical air conditioner in FIG. 4 An exploded schematic diagram of the components of the indoor unit 300. 7 is a schematic diagram of the overall structure of a vertical air conditioner indoor unit 300 according to a third embodiment of the present invention, FIG. 8 is a partial structural diagram of the vertical air conditioner indoor unit 300 in FIG. 7, and FIG. 9 is a vertical air conditioner in FIG. An exploded schematic diagram of the components of the indoor unit 300. 10 is a schematic diagram of the overall structure of a vertical air conditioner indoor unit 300 according to the fourth embodiment of the present invention, FIG. 11 is a partial structural diagram of the vertical air conditioner indoor unit 300 in FIG. 10, and FIG. 12 is a vertical air conditioner in FIG. 10 An exploded schematic diagram of the components of the indoor unit 300. 13 is a schematic diagram of the air circulation of the laminar flow fan 100 in the vertical air conditioner indoor unit 300 according to an embodiment of the present invention, and FIG. 14 is the air supply of the laminar flow fan 100 in the vertical air conditioner indoor unit 300 according to an embodiment of the present invention Schematic diagram of the principle. FIG. 15 is a speed distribution and force distribution diagram of the laminar flow fan 100 in the vertical air conditioner indoor unit 300 according to an embodiment of the present invention. 16 is a schematic structural view of the laminar flow fan 100 with a groove 32 in the driving disc 30, FIG. 17 is a schematic structural view of the laminar flow fan 100 in FIG. 16 from another view, and FIG. 18 is another view of the laminar flow fan 100 in FIG. 16 Fig. 19 is a cross-sectional view of the laminar flow fan 100 in Fig. 16. As shown in FIGS. 1 to 13, the vertical air conditioner indoor unit 300 may generally include a casing 310, a laminar flow fan 110 and a single suction centrifugal fan 510.

Wherein, the housing 310 defines a cavity inside, and the upper and lower parts of the housing 310 are provided with an air outlet 320 and the middle is provided with an air inlet 330. The housing 310 may include: a front panel 311, a rear case 312, a top panel 313, and a bottom panel 314. In a specific embodiment, the rear shell 312 includes a rear panel 315 and two side panels 316. An air deflector 321 may be provided at the air outlet 320 of the housing 310 to adjust the air outlet direction of the indoor unit 300 of the vertical air conditioner. The air inlet 330 of the housing 310 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.

The laminar flow fan 110 may be arranged inside the cavity and configured to use the viscous effect to make part of the air in the cavity form laminar air, and to blow the laminar air from the upper air outlet 320. The laminar flow fan 110 may include a laminar flow fan 100 and a laminar flow motor 20. The laminar flow fan 100 is arranged inside the cavity corresponding to the upper air outlet 320. The laminar flow fan 100 includes a plurality of annular discs 10, which are arranged in parallel with each other and have the same central axis. An air inlet channel 11 is formed in the center, and the air in the cavity enters the gap between the plurality of annular disks 10 through the air inlet channel 11. The laminar flow motor 20 is connected to the laminar flow fan 100 and is configured to drive the plurality of annular disks 10 to rotate, so that the air boundary layer 13 near the surface of the plurality of annular disks 10 rotates from the inside to the outside, thereby forming a laminar air flow The air outlet 320 blows out.

The single-suction centrifugal fan 510 may be arranged under the laminar flow fan 110, and its axial direction is perpendicular to the front panel 311 and configured to drive part of the air in the cavity to blow out from the lower air outlet 320. The vertical air conditioner indoor unit 300 may further include: a volute 520 having an inlet (not shown in the figure) and an outlet 521, and the outlet 521 is arranged opposite to the lower air outlet 320; the single suction centrifugal fan 510 is arranged on the volute Inside 520, it is also configured to drive part of the air in the cavity to enter the volute 520 from the inlet, and exit from the outlet 521 after turning twice in the volute 520, and then blow out through the lower air outlet 320. It should be noted that the entrance of the volute 520 is arranged on the side facing the rear panel 315, so it is not shown in the figure. In a word, the single-suction centrifugal fan 510 enters the air in the axial direction and exits the air radially. The air enters the single-suction centrifugal fan 510 in the axial direction to leave the single-suction centrifugal fan 510 in the radial direction, and then turns once, and then exits from the outlet 521 and turns again.

Specifically, the laminar flow motor 20 drives the plurality of annular disks to rotate, so that the plurality of annular disks are in contact with the air between each other and move with each other, so that the air boundary layer 13 near the surface of the plurality of annular disks is caused by the viscous effect. The multiple ring-shaped discs are driven to rotate from inside to outside to form laminar wind. A plurality of air outlets 12 are formed in the gap between the plurality of annular discs, and each air outlet 12 can realize 360° air supply, and the laminar air discharged from the air outlet 12 is blown out to the vertical air conditioner through the air outlet 320 In the environment outside the indoor unit 300. The laminar flow fan can achieve 360° air supply, but the air outlet 320 can be set according to the actual situation, and can respectively achieve four-sided air supply, three-sided air supply, two-sided air supply, or single-sided air supply.

The casing 310 may be provided with an air outlet 320 around the laminar flow fan 100 at the upper part thereof, so as to realize air supply from all sides at the upper part, that is, 360° air supply. Alternatively, the vertical air conditioner indoor unit 300 may further include: a windshield 371 arranged on the outside of the laminar flow fan 100 and having a notch 373; the housing 310 is provided with an air outlet 320 at a position corresponding to the notch 373. According to the size of the gap 373 and the corresponding setting of the air outlet 320, the upper part can be supplied with air from three sides, two sides or three sides.

As shown in FIG. 13, the laminar flow fan 100 may further include: a driving disc 30 and a connecting member. The driving discs 30 are arranged parallel to one side of the plurality of annular discs 10 at intervals. 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. As shown in FIG. 16, the connecting member may 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 a plurality of annular discs 10 to rotate. That is to say, the above-mentioned laminar flow motor 20 is configured to drive a plurality of annular disks 10 to rotate depends on that the laminar flow motor 20 first drives the driving disk 30 to rotate, and then the driving disk 30 drives the plurality of annular disks. 10 rotations. In a specific embodiment, the radius of the drive disc 30 and the outer diameter of the plurality of annular discs 10 are the same, and can be set in a certain range, for example, 170 mm to 180 mm, so as to occupy the volume of the laminar flow fan 100 in the lateral direction. Constraint, cooperate to limit the number of annular discs 10 and the distance between two adjacent annular discs 10, and restrict the longitudinal thickness of the laminar flow fan 100, which can effectively restrict the overall occupied volume of the laminar flow fan 100. It should be noted 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 numerical values of the outer diameter of the annular disk 10 are only examples, and not a limitation of the present invention.

The vertical air conditioner indoor unit 300 may further include an evaporator, which is disposed inside the cavity corresponding to the air inlet 330 and configured to exchange heat for the air entering the cavity through the air inlet 330. The evaporator can be a U-shaped evaporator 381 or a flat evaporator 382. In addition, a water receiving pan 390 may be provided under various evaporators to receive the condensed water generated by the evaporator. The shape of the water receiving tray 390 may match the shape of the volute 520, for example, the lower part of the volute 520 may pass through the water receiving tray 390. A shelf 530 can also be arranged inside the cavity, and the lower part of the volute 520 can be placed on the shelf 530 after passing through the water receiving tray 390.

The vertical air conditioner indoor unit 300 may further include a draft ring 360 arranged on the side of the plurality of annular disks 10 away from the driving disk 30. In addition, the air guide ring 360 is configured to guide part of the air in the cavity into the air inlet channel 11. The air entering the cavity through the air inlet 330 first exchanges heat through the evaporator, and part of the heat exchanged air is guided into the air inlet channel 11 of the laminar flow fan 100 through the draft ring 360; and partly because the single-suction centrifugal fan 510 enters the worm Shell 520, and discharged from the outlet 521.

Several specific embodiments of the indoor unit 300 of the vertical air conditioner are introduced as follows:

Embodiment 1: As shown in Figures 1 to 3, the vertical air conditioner indoor unit 300 of this embodiment is provided with two U-shaped evaporators 381 vertically placed up and down. The cross-section of the U-shaped evaporator 381 is U-shaped. , And the U-shaped opening faces the front panel 311. The air inlet 330 is provided on the rear panel 315 and the two side panels 316 of the rear shell 312, that is, the air enters from three sides. In other words, two U-shaped evaporators 381 are arranged corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can pass through the two U-shaped evaporators 381 to exchange heat. A first partition 383 is also arranged in front of the two U-shaped evaporators 381, which can prevent the heat exchanged air from flowing to the front of the cavity. The first partition 383 in this embodiment is flat. A second partition 384 can also be arranged between the two U-shaped evaporators 381, which can avoid the mutual influence of the two U-shaped evaporators 381. A part of the heat-exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guide ring 360, and then enters between the plurality of annular disks of the laminar flow fan 100. Part of the heat exchanged air is because the single-suction centrifugal fan 510 enters the volute 520 from the inlet, and is discharged from the outlet 521 after turning twice in the volute 520, and then blows out through the lower air outlet 320. The housing 310 of the indoor unit 300 of the vertical air conditioner of this embodiment is provided with an air outlet 320 around the laminar flow fan 100 on its upper part. Specifically, the upper part of the front panel 311 of the vertical air conditioner indoor unit 300, the rear panel 315 of the rear housing 312, and the two side panels 316 of this embodiment are provided with air outlets 320, and the laminar flow formed by the laminar flow fan 100 flows from the upper part. The air outlet 320 blows out, which can achieve 360° air supply from the upper part. In addition, the lower part of the front panel 311 is provided with an air outlet 320, which can realize single-sided air supply from the lower part.

Embodiment 2: As shown in Figures 4 to 6, the vertical air conditioner indoor unit 300 of this embodiment is provided with a single U-shaped evaporator 381. The U-shaped evaporator 381 is placed vertically inside the cavity and its cross section is U-shaped, and the U-shaped opening faces the front panel 311. The air inlet 330 is provided on the rear panel 315 and the two side panels 316 of the rear shell 312, that is, the air enters 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 pass through the U-shaped evaporator 381 to exchange heat. A first partition 383 is further provided in front of the U-shaped evaporator 381, which can prevent the heat exchanged air from flowing to the front of the cavity. The first partition 383 in this embodiment is flat. A part of the heat-exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guide ring 360, and then enters between the plurality of annular disks of the laminar flow fan 100. Part of the heat exchanged air is because the single-suction centrifugal fan 510 enters the volute 520 from the inlet, and is discharged from the outlet 521 after turning twice in the volute 520, and then blows out through the lower air outlet 320. The windshield 371 of this embodiment may be in the shape of a flat plate, and the outer periphery of the laminar flow fan 100 that is not blocked by the windshield 371 is the notch 373. Since the windshield 371 is provided with notches 373 on the front and left and right sides of the circumference of the laminar flow fan 100, the front panel 311 and the two side panels 316 of the rear housing 312 of the vertical air conditioner indoor unit 300 of this embodiment The upper part is provided with an air outlet 320, and the laminar air formed by the laminar flow fan 100 is blown out from the upper air outlet 320, which can realize air supply on three sides of the upper part. In addition, the lower part of the front panel 311 is provided with an air outlet 320, which can realize single-sided air supply from the lower part.

Embodiment 3: As shown in FIGS. 7 to 9, the vertical air conditioner indoor unit 300 of this embodiment is provided with two vertically placed evaporators 382, the evaporators 382 are flat and parallel to the side panel 316. The air inlets 330 are arranged on the two side panels 316 of the rear shell 312, that is, the air enters from both sides. In other words, the two evaporators 382 are arranged corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can pass through the two evaporators 382 to exchange heat. The front and rear of the two evaporators 382 are respectively provided with partitions 383 to prevent the heat exchanged air from flowing to the front and rear of the cavity. The partitions 383 in this embodiment are flat. A part of the heat-exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guide ring 360, and then enters between the plurality of annular disks of the laminar flow fan 100. Part of the heat exchanged air is because the single-suction centrifugal fan 510 enters the volute 520 from the inlet, and is discharged from the outlet 521 after turning twice in the volute 520, and then blows out through the lower air outlet 320. The housing 310 of the indoor unit 300 of the vertical air conditioner of this embodiment is provided with an air outlet 320 around the laminar flow fan 100 on its upper part. Specifically, the upper part of the front panel 311 of the vertical air conditioner indoor unit 300, the rear panel 315 of the rear housing 312, and the two side panels 316 of this embodiment are provided with air outlets 320, and the laminar flow formed by the laminar flow fan 100 flows from the upper part. The air outlet 320 blows out, which can achieve 360° air supply from the upper part. In addition, the lower part of the front panel 311 is provided with an air outlet 320, which can realize single-sided air supply from the lower part.

Embodiment 4: As shown in Figures 10 to 12, the vertical air conditioner indoor unit 300 of this embodiment is provided with a single flat evaporator 382, which is vertically placed inside the cavity and parallel to the front panel 311 . The air inlet 330 is disposed on the rear panel 315 of the rear shell 312, that is, the air enters on 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 pass through the flat plate evaporator 382 to exchange heat. A first partition 383 is also arranged in front of the flat evaporator 382, which can prevent the air after heat exchange from flowing to the front of the cavity. The first partition 383 of this embodiment is U-shaped, and the U-shaped opening faces the flat evaporator 382. . A part of the heat-exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guide ring 360, and then enters between the plurality of annular disks of the laminar flow fan 100. Part of the heat exchanged air is because the single-suction centrifugal fan 510 enters the volute 520 from the inlet, and is discharged from the outlet 521 after turning twice in the volute 520, and then blows out through the lower air outlet 320. The windshield 371 of this embodiment may be in the shape of a flat plate, and the outer periphery of the laminar flow fan 100 that is not blocked by the windshield 371 is the notch 373. Since the windshield 371 is provided with notches 373 on the front and left and right sides of the circumference of the laminar flow fan 100, the front panel 311 and the two side panels 316 of the rear housing 312 of the vertical air conditioner indoor unit 300 of this embodiment The upper part is provided with an air outlet 320, and the laminar air formed by the laminar flow fan 100 is blown out from the upper air outlet 320, which can realize air supply on three sides of the upper part. In addition, the lower part of the front panel 311 is provided with an air outlet 320, which can realize single-sided air supply from the lower part.

In some other embodiments, the windshield 371 may also be shell-shaped, wrapped and arranged on the outside of the laminar flow fan 100, and only a notch 373 is provided on the front side of the circumference of the laminar flow fan 100, then the vertical air conditioner indoor unit 300 can only be provided with the upper air outlet 320 on the front panel 311 to achieve single-sided air supply from the upper part. However, regardless of the shape of the windshield 371, the notch 373 is arranged corresponding to the air outlet 320. For example, the windshield 371 can discharge the laminar wind formed by the laminar flow fan 100 on three sides, and there are three air outlets 320 correspondingly; the windshield 371 can discharge the laminar wind formed by the laminar flow fan 100 on one side, then the One air outlet 320 is provided correspondingly. The windshield 371 can ensure that the laminar flow formed by the laminar flow fan 100 will not be blown to other places in the cavity except through the air outlet 320, so as to avoid affecting the normal operation of other components in the cavity.

As shown in FIG. 13, the center of the plurality of annular disks 10 is jointly formed with an air inlet channel 11 to allow air outside the laminar flow fan 100 to enter. A plurality of air outlets 12 are formed in the gaps between the plurality of annular disks 10 for the laminar wind to blow out. The process of the air boundary layer 13 rotating from inside to outside to form laminar wind is centrifugal movement, so the speed when leaving the air outlet 12 is greater than the speed when entering the air inlet channel 11. The pressure difference between the exhaust port 12 of the laminar flow fan 100 and the inlet of the air inlet channel 11 is the wind pressure. The multiple air outlets 12 formed by the gaps between the multiple annular discs 10 can enable the laminar flow fan 100 to achieve 360° uniform air supply, avoiding the user from causing excessive air supply caused by the vertical air conditioner indoor unit 300. This kind of uncomfortable symptoms further enhance the user experience.

The air supply principle of the laminar flow fan 100 is mainly derived from the "Tesla turbine" discovered by Nikola Tesla. Tesla turbines mainly use the "laminar boundary layer effect" or "viscosity effect" of fluids to achieve the purpose of doing work on the "turbine disk". 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 a plurality of annular discs 10 to rotate at a high speed. The air in the interval of the annular discs 10 contacts and moves with each other, then they approach Due to the viscous shear force τ, the air boundary layer 13 on the surface of each annular disk 10 is driven by the rotating annular disk 10 to rotate from inside to outside to form laminar wind.

FIG. 15 shows a schematic diagram of the viscous shear force distribution τ(y) and velocity distribution u(y) of the air boundary layer 13. The viscous shear force received by the air boundary layer 13 is actually the resistance generated by each annular disk 10 to the air boundary layer 13. The axis of abscissa in FIG. 15 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 a direction perpendicular to the moving direction. v _e is the airflow velocity at each point in the air boundary layer 13, δ is the thickness of the air boundary layer 13, and τ _w is the viscous shear force on 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 direction of movement, and L is a certain point on the inner circumference of the annular disc 10 and a certain surface of the annular disc 10 The distance between one point. Then τ(y) is the distribution of viscous shear force received when the height of the air boundary layer 13 section is y at this distance L; u(y) is at this distance L, the height of the air boundary layer 13 section is y The velocity distribution at time.

The center of the driving disc 30 of the laminar flow fan 100 shown in FIGS. 16 to 19 is formed with a groove 32 facing the plurality of annular discs 10, and the laminar flow motor 20 is fixedly arranged in the groove 32. 20 is a schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 in FIG. 16, and FIG. 21 is an exploded schematic view of the components of the laminar flow motor 20, the fixing plate 340 and the fixing frame 350. As shown in FIGS. 20 and 21, the vertical air conditioner indoor unit 300 may further include a fixing plate 340 and a fixing frame 350. One side of the fixing plate 340 is provided with a plurality of reinforcing ribs 341, and the other side is provided with a plurality of clamping slots 342. The reinforcing ribs 341 can effectively improve the firmness of the fixing plate 340. The fixing frame 350 is provided with a plurality of claws 351 corresponding to the plurality of clamping grooves 342 on the side facing the fixing plate 340, so as to fix the laminar flow motor 20 after the plurality of clamping claws 351 are respectively screwed to the plurality of clamping grooves 342 Between the fixing frame 350 and the fixing plate 340, a hole 352 is formed in the center of the fixing frame 350, and the output shaft 21 of the laminar flow motor 20 passes through the hole 352 and is fixed to the driving disc 30. For the laminar flow fan 100 shown in FIGS. 16 to 19, since the center of the driving disc 30 faces the plurality of annular discs 10, a groove 32 is formed, and the output shaft 21 of the laminar flow motor 20 is fixedly arranged after passing through the perforation 352 In the groove 32 of the drive disc 30.

22 is a schematic diagram of the connection of the laminar flow motor 20 with the laminar flow fan 100 with a conical protrusion 31 on the drive disc 30, FIG. 23 is a schematic structural view of the laminar flow fan 100 in FIG. 22 from another perspective, and FIG. 24 is FIG. 22 A schematic cross-sectional view of the middle laminar flow fan 100. The surface of the driving disc 30 of the laminar flow fan 100 in FIGS. 22 to 24 facing the laminar flow motor 20 is flat, and the surface facing the plurality of annular discs 10 has conical protrusions 31 to guide the laminar flow fan 100 air flows and assists in the formation of laminar wind.

The main function of the driving disc 30 is to fix and receive the laminar flow motor 20, and to realize the connection with a plurality of annular discs 10 through a connecting piece, so as to drive the plurality of annular discs 10 to rotate when the laminar flow motor 20 drives the driving disc 30 to rotate. . For the laminar flow fan shown in FIGS. 22 to 24, since the surface of the driving disc 30 facing the laminar flow motor 20 is a plane, the output shaft 21 of the laminar flow motor 20 is fixedly arranged on the driving disc 30 after passing through the perforation 352 One side of the plane. The driving disc 30 of the laminar flow fan 100 shown in FIGS. 22 to 24 has a conical protrusion 31 on the surface facing the plurality of annular discs 10, which can effectively guide the laminar flow fan 100 through the air inlet channel 11 Air enters the gap between the annular discs 10, thereby increasing the efficiency of forming laminar air.

In a preferred embodiment, the connecting piece 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 the same as that of the laminar flow fan 100. The air volume generated is linear. The connecting piece 40 may be provided in plural, and penetrate the driving disc 30 and the plural annular discs 10 at even intervals. A plurality of connecting pieces 40 penetrate the driving disc 30 and the plurality of annular discs 10 at even intervals, which can ensure that the connection relationship between the driving disc 30 and the plurality of annular discs 10 is stable, thereby ensuring that the laminar flow motor 20 drives the driving disc When 30 rotates, the driving disc 30 can stably drive a plurality of annular discs 10 to rotate, which improves the working reliability of the laminar flow fan 100.

It should be noted that the two sections of

curves

41 and 42 can be circular arcs, non-circular arcs, straight lines, etc., and the straight line can be used as a special curve. When 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 length of the chord line 51 may be the distance between the two ends of the curve 41 or the curve 42. When the distance between the two ends of the curve 41 is different from the distance between the two ends of the curve 42, if the two ends of the curve 41 and the curve 42 do not intersect, the length of the chord line 51 can be the cross section of the connecting piece 40 divided by the curve 41, The length of the line connecting the midpoint of the curve other than 42; if the curve 41 and the curve 42 intersect at only one end, the length of the chord line 51 can be the midpoint and the end of the intersection of the cross section of the connecting piece 40 except for the

curves

41 and 42 The length of the connection.

As shown in FIG. 24, the connecting piece 40 may be a double-arc blade 401, the cross-section of which has a double-arc in the direction in which the annular disc 10 rotates: an inner arc 41 and a back arc 42, and the inner arc 41 and the back The arcs 42 all protrude in the direction in which the annular disc 10 rotates, have the same center and are arranged in parallel. FIG. 24 actually shows a cross-sectional schematic view of the laminar flow fan 100 when viewed from above. The laminar flow motor 20 drives the ring disk 10 to rotate clockwise, and the convex direction of the back arc 42 and the inner arc 41 is the same as that of the ring disk 10 rotating. The direction is the same. In some other embodiments, the laminar flow motor 20 can also drive the annular disk 10 to rotate counterclockwise. At this time, the convex directions of the back arc 42 and the inner arc 41 can be opposite to those shown in FIG. 24.

FIG. 25 is a schematic diagram of the relationship between the length of the chord line 51 of the connecting piece 40 in FIG. 24 and the air volume and wind pressure. Since the connecting piece 40 of the laminar flow fan 100 in FIG. 24 is a double arc blade 401, the distance between the two ends of the inner arc 41 and the distance between the two ends of the back arc 42 are the same, the length of the chord line 51 can be the inner arc 41 or the back The distance between the two ends of the arc 42. In Fig. 25, the blade chord on the abscissa axis refers to the length of the chord line 51 of the connecting piece 40 of the laminar flow fan 100, the mass flow rate on the left ordinate axis refers to the air volume, and the axis pressure on the right ordinate axis Pressure rise refers to wind pressure. Specifically, FIG. 25 shows that when the outer diameter, inner diameter, number of layers, spacing, thickness, installation angle of the connecting piece 40, and the rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged, A schematic diagram of the relationship between the length of the chord line 51 and the air volume and pressure. The installation angle of the connecting piece 40 in this embodiment can be: on the same cross section of the connecting piece 40 and the annular disc 10, the chord line 51 between the two ends of the inner arc 41 and the annular disc passing through the midpoint of the chord line 51 The angle formed by the outer diameter 52 of 10.

When the above-mentioned parameters remain unchanged, for example, in a preferred embodiment, the outer diameter of the annular disc 10 of the laminar flow fan 100 is 175mm, the inner diameter of the annular disc 10 is 115mm, and the diameter of the annular disc 10 is 115mm. The number of layers is 8 layers, the spacing of the annular disc 10 is 13.75mm, the thickness of the annular disc 10 is 2mm, the installation angle of the connecting piece 40 is 25.5°, and the speed of the laminar flow motor 20 is 1000rpm (revolutions per minute, revolution/ Min), it can be found that after increasing the length of string 51, the air volume and pressure are greatly improved, and they are basically linear. Considering that the internal space of the vertical air conditioner indoor unit 300 is limited, the overall occupied volume of the laminar flow fan 100 needs to be restricted. In the case that the outer and inner diameters of the annular disc 10 are constant, although the longer the string 51, the greater the air volume and pressure of the laminar flow fan 100, but the length of the string 51 must be restricted to avoid the connecting piece 10 Excessive penetration of the annular disk 10 causes the stability of the laminar flow fan 100 to decrease. In short, the length of the string 51 can be set to the maximum reachable range, so that the air volume and pressure of the laminar flow fan 100 can meet the user's requirements.

Therefore, in the above-mentioned preferred embodiment, under the premise of ensuring the stability of the laminar flow fan 100, the length of the string 51 is set to the maximum reachable range: 40 mm to 42 mm. Moreover, when the length of the string 51 is set to 42 mm, the air volume of the laminar flow fan 100 can reach 1741 m ³ /h, and the wind pressure can reach 118.9 Pa, which can fully meet the user's needs. At this time, the difference between the outer diameter and the inner diameter of the annular disc 10 is 60mm, and the length of the chord line 51 is set to 42mm, so that the two ends of the inner arc 41 and the back arc 42 and the inner and outer circumferences of the annular disc 10 are about 9mm respectively. Distance, under the premise of ensuring the stability of the laminar flow fan 100, the length of the string 51 is set to the maximum reachable range, so that the air volume and pressure of the laminar flow fan 100 can meet the user's requirements.

FIG. 26 is a schematic diagram of the relationship between the installation angle α of the connecting piece 40 in FIG. 24 and the air volume and wind pressure of the suction side of the blade facing the incoming flow (Suction side upwind). Since the connecting piece 40 of the laminar flow fan 100 in FIG. 24 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 line 51 between the two ends of the arc 41 and the outer diameter 52 of the annular disc 10 passing through the midpoint of the chord line 51. The metal angle of the abscissa axis (Metal angle (α)) in FIG. 26 refers to the installation angle of the double arc blade 401 of the laminar flow fan 100, that is, on the same cross section of the double arc blade 401 and the annular disk 10, 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 disc 10 passing through the midpoint of the chord line 51. The mass flow rate on the left ordinate axis (Mass flow rate) refers to the air volume, the pressure rise on the right ordinate axis refers to the wind pressure, and the SS in the figure refers to the suction side facing the incoming flow (Suction side). upwind). Specifically, FIG. 26 shows that 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. Schematic diagram of the relationship between installation angle α and air volume and air pressure. The chord length of the double arc blade 401 in this embodiment may be the linear distance between the two ends of the inner arc 41 or the back arc 42.

When the above-mentioned parameters remain unchanged, for example, in a preferred embodiment, the outer diameter of the annular disc 10 of the laminar flow fan 100 is 175mm, the inner diameter of the annular disc 10 is 115mm, and the diameter of the annular disc 10 is 115mm. The number of layers is 8; the spacing of the annular disc 10 is 13.75mm, the thickness of the annular disc 10 is 2mm, the chord length of the double-arc blade 401 is 35mm, and the speed of the laminar flow motor 20 is 1000rpm (revolutions per minute). /Min). At this time, considering the air volume and pressure, the installation angle α of the double-arc blade 401 can be set from -5° to 55°. It should be noted that when the chord line 51 between the two ends of the inner arc 41 and the outer diameter 52 of the annular disc 10 passing through the midpoint of the chord line 51 in the direction of rotation of the annular disc 10 are successively, the installation angle α is A positive number; when the outer diameter 52 of the ring disk 10 passing through the midpoint of the chord line 51 and the chord line 51 between the two ends of the inner arc 41 in the direction of rotation of the ring disk 10 are in turn, the installation angle α is a negative number.

FIG. 27 is a schematic cross-sectional view of the laminar flow fan 100 with aviation blades 402, and FIG. 28 is a schematic view of the relationship between the installation angle α of the aviation blade 402 of the laminar flow fan 100 in FIG. 27 and the air volume and wind pressure. In a specific embodiment, the connecting piece 40 may also be an aviation blade 402. The cross section of the aviation blade 402 has a double circular arc protruding in the direction of rotation of the annular disc 10, and the double circular arc includes an inner arc 41 and a back arc 42 sequentially arranged along the direction of rotation of the annular disc 10. The inner arc 41 and The back arc 42 has different centers and both ends intersect. 27 actually shows a schematic cross-sectional view of the laminar flow fan 100 when viewed from above. The laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the convex direction of the back arc 42 and the inner arc 41 is the same as that of the annular disk 10 rotating. The direction is the same. In some other embodiments, the laminar flow motor 20 can also drive the annular disc 10 to rotate counterclockwise. At this time, the convex directions of the back arc 42 and the inner arc 41 can be opposite to those shown in FIG. 27.

The installation angle α of the aviation blade 402 in FIG. 28 actually refers to: on the same cross section of the aviation blade 402 and the annular disc 10, the chord line 51 between the two ends of the inner arc 41 or the back arc 42 and the passing chord The angle formed by the outer diameter 52 of the annular disc 10 at the midpoint of the line 51. The metal angle (Metal angle (α)) of the abscissa axis in FIG. 28 refers to the installation angle of the aviation blade 402 of the laminar flow fan 100, that is, on the same cross section of the aviation blade 402 and the annular disc 10, the inner arc 41 or The angle formed by the chord line 51 between the two ends of the back arc 42 and the outer diameter 52 of the annular disc 10 passing through the midpoint of the chord line 51. The mass flow rate on the left ordinate axis (Mass flow rate) refers to the air volume, the pressure rise on the right ordinate axis refers to the wind pressure, and the SS in the figure refers to the suction side facing the incoming flow (Suction side). upwind). Specifically, FIG. 28 shows that when the outer diameter, inner diameter, number of layers, spacing, thickness, chord length of the aero 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, Schematic diagram of the relationship between installation angle α and air volume and air pressure. The chord length of the aviation blade 402 in this embodiment may be the linear distance between the two ends of the inner arc 41 or the back arc 42, that is, the length of the chord line 51.

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

FIG. 29 is a schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 with a gradual pitch of a plurality of annular disks 10, and FIG. 30 is a schematic diagram of the connection of the laminar flow fan 100 and the laminar flow motor 20 in FIG. 29 from another perspective, and FIG. The relationship between the gradual pitch of the plurality of annular disks 10 of the laminar flow fan 100 and the air volume and air pressure in FIG. 29.

As shown in FIGS. 29 and 30, the connecting member of the laminar flow fan 100 may also be a connecting rod 60. The connecting rods 60 can also be provided in multiples and penetrate the driving disc 30 and the plurality of annular discs 10 at even intervals to ensure that the connection relationship between the driving disc 30 and the plurality of annular discs 10 is stable, thereby ensuring the laminar flow When the motor 20 drives the driving disc 30 to rotate, the driving disc 30 can stably drive a plurality of annular discs 10 to rotate, thereby improving the working reliability of the laminar flow fan 100. As the distance between two adjacent annular disks 10 gradually increases from one side far from the driving disk 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 User needs. In a preferred embodiment, the amount of change in the distance between two adjacent ring-shaped disks 10 is the same, that is, the distance between two adjacent ring-shaped disks 10 is changed from the side away from the drive disk 30. The same value increases to the other side.

The plate distance increase on the abscissa axis in FIG. 31 refers to the amount of change in the distance between two adjacent annular disks 10 in the direction from one side away from the drive disk 30 to the other side. , Shrinking, uniform and expanding (shrinking uniform expanding) refers to the decrease, constant and increase of the change. The left ordinate axis mass flow rate (Mass flow rate) refers to air volume, and the right ordinate axis pressure rise (Pressure rise) refers to wind pressure. In addition, the amount of change in the spacing between two adjacent annular disks 10 is the same (the same), that is, the amount of increase or decrease in the spacing between two adjacent annular disks 10 is the same.

Specifically, FIG. 31 shows that when the outer diameter, inner diameter, number, thickness, and rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged, the pitch of the plurality of annular disks 10 gradually changes with the air volume. Schematic diagram of the relationship with wind pressure. As shown in FIG. 31, when the above-mentioned parameters remain unchanged, the distance between each two adjacent ring-shaped disks 10 in the plurality of ring-shaped disks 10 ranges from the side away from the driving disk 30 to The gradual change on the other side has a greater impact on the air volume and a small impact on the wind pressure. When the amount of change in the distance between two adjacent annular disks 10 in the direction from one side away from the driving disk 30 to the other side indicated by the axis of abscissa is a positive number, a plurality of annular disks 10 are described. The distance between each two adjacent annular disks 10 gradually increases from one side far away from the driving disk 30 to the other side; when the abscissa axis represents the distance from the side far away from the driving disk 30 to When the amount of change in the distance between two adjacent annular disks 10 in the direction on the other side is negative, it means that the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 changes from being away from the driving circle. The disk 30 gradually shrinks from one side to the other side.

It can be seen from FIG. 31 that when the distance between each two adjacent annular disks 10 in the plurality of annular disks 10 is -1mm, 1mm, and 2mm, the air volume and pressure of the laminar flow fan 100 are very large. improve. Considering the air volume and wind pressure of the laminar flow fan 100, the distance between each two adjacent annular disks 10 in the plurality of annular disks 10 is set to gradually increase from one side far from the driving disk 30 to the other side. Big. In a preferred embodiment, the outer diameter of the annular disc 10 of the laminar flow fan 100 is 175mm, the inner diameter of the annular disc 10 is 115mm, the number of the annular disc 10 is 8, and the thickness of the annular disc 10 is 2mm. The rotation speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). At this time, considering the air volume and pressure of the laminar flow fan 100, two adjacent annular discs can be set in the eight annular discs 10 The spacing between 10 can be set in sequence from one side far from the drive disc 30 to the other side: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75mm, that is, two adjacent rings The distance between the disks 10 increases by 1 mm from one side far away from the driving disk 30 to the other side. It should be noted that the distance between two adjacent annular disks 10 in the plurality of 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 the two adjacent annular disks 10 is gradually increasing along the airflow. In the direction of flow in the wind channel 11, the distance between two adjacent annular disks 10 gradually increases.

32 is a partial cross-sectional view of the laminar flow fan 100 with a gradual inner diameter of a plurality of annular disks 10, and FIG. 33 is a schematic diagram of the relationship between the gradual inner diameter of the plurality of annular disks 10 of the laminar flow fan 100 in FIG. 32 and the air volume and pressure. 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 is effectively increased, so that the air output of the laminar flow fan 100 meets the user's requirements. In a preferred embodiment, the amount of change in the inner diameter of two adjacent annular discs 10 is the same, that is, the inner diameters of the plurality of annular discs 10 are reduced from one side away from the driving disc 30 to the other side. The values are the same.

The inner radius increment of the abscissa axis in Fig. 33 refers to the amount of change between the inner diameter of each ring-shaped disc 10 and the inner diameter of the adjacent ring-shaped disc 10 below, shrinking, uniform, and expanding (shrinking uniform expansion) It means that the amount of change decreases, remains unchanged, and increases. The left ordinate axis mass flow rate (Mass flow rate) refers to air volume, and the right ordinate axis pressure rise (Pressure rise) refers to wind pressure. Specifically, FIG. 33 shows that when the outer diameter, spacing, number, thickness of the annular disk 10 of the laminar flow fan 100, and the rotation speed of the laminar flow motor 20 remain unchanged, the inner diameter of the plurality of annular disks 10 gradually changes and the air volume Schematic diagram of the relationship with wind pressure. As shown in FIG. 33, when the above-mentioned parameters remain unchanged, the inner diameter of the plurality of annular discs 10 gradually changes from one side far away from the driving disc 30 to the other side, which has a greater impact on the air volume, and The pressure effect is small. When the amount of change between the inner diameter of each ring-shaped disc 10 and the inner diameter of the adjacent ring-shaped disc 10 on the axis of abscissas is positive, it means that the inner diameters of the plurality of ring-shaped discs 10 vary from one that is far away from the drive disc 30. Gradually increase from side to side; when the inner diameter of each ring-shaped disc 10 indicated by the axis of abscissa and the inner diameter of the adjacent ring-shaped disc 10 below are negative, it means that the inner diameter of the plurality of ring-shaped discs 10 is determined by The side away from the driving disc 30 gradually shrinks to the other side.

It can be seen from FIG. 33 that 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 wind pressure decreases slightly; When the inner diameter of the disk 10 gradually increases from one side away from the driving disk 30 to the other side, the wind pressure of the laminar flow fan 100 increases slightly, and the air volume decreases a lot. Therefore, comprehensively considering the air volume and wind pressure of the laminar flow fan 100, the inner diameters of the plurality of annular disks 10 are set to gradually decrease from one side away from the driving disk 30 to the other side.

In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the spacing of the annular disk 10 is 13.75 mm, the number of the annular disk 10 is 8, and the thickness of the annular disk 10 is 2mm, the rotation speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). At this time, considering the air volume and pressure of the laminar flow fan 100, the inner diameter of each ring disk 10 can be set adjacent to the bottom The amount of change in the inner diameter of the annular disc 10 is -5mm. That is, the inner diameters of the eight annular discs 10 can be set from one side far away from the driving disc 30 to the other side: 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, 80mm, the diameter of each annular disc 10 The inner diameter is 5 mm smaller than the inner diameter of the annular disc 10 adjacent below. It should be noted that the distance between the annular disks 10 above specifically refers to the distance between two adjacent annular disks 10. Moreover, it should be emphasized that the inner diameters of the plurality of annular discs 10 gradually decrease from one side away from the driving disc 30 to the other side, which actually refers to the direction in which the airflow flows in the air inlet channel 11. The inner diameter of the disk 10 gradually decreases.

34 is a schematic diagram of the central angle of the inner and outer diameters of the laminar flow fan 100 in which the annular disk 10 is an arc-shaped disk on the same longitudinal section passing through the central axis. Schematic diagram of the relationship between the central angle and air volume and pressure. Each annular disk 10 of the laminar flow fan 100 in FIG. 34 is an arc-shaped disk gradually approaching the driving disk 30 from the center to the edge and protruding toward the side of the driving disk 30. Compared with a flat disk, the arc-shaped disk can make the angle at which the external air enters the laminar flow fan 100 more in line with the fluid flow, which is more conducive to the entry of the external air into the laminar flow fan 100 and effectively reduces air loss. In addition, the inner diameters of the plurality of annular discs 10 gradually decrease from one side away from the driving disc 30 to the other side, and the inner and outer diameters of the plurality of annular discs 10 on the same longitudinal section passing through the central axis form a circle center. Angle θ.

The abscissa axis θ in FIG. 35 refers to the central angle of the connection between the inner and outer diameters of a plurality of annular discs 10 on the same longitudinal section passing through the central axis, and the left ordinate axis mass flow rate refers to the air volume. Pressure rise on the right ordinate axis refers to wind pressure. Specifically, FIG. 35 shows the relationship between the central angle θ and the air volume and pressure when the outer diameter, number of layers, spacing, thickness, and rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 remain unchanged. Schematic. As shown in FIG. 35, when the above-mentioned parameters remain unchanged, as the central angle θ gradually increases, the air volume of the laminar flow fan 100 first increases and then decreases, while the wind pressure slightly increases. In a preferred embodiment, the outer diameter of the annular disc 10 of the laminar flow fan 100 is 175 mm, the number of layers of the annular disc 10 is 10, the spacing of the annular disc 10 is 13.75 mm, and the thickness of the annular disc 10 The speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). At this time, considering the air volume and pressure, the inner and outer diameters of the multiple annular discs 10 on the same longitudinal section passing through the central axis are connected The central angle θ can be set from 9° to 30°. And as shown in FIG. 35, when the central angle θ is set to 15°, the air volume of the laminar flow fan 100 reaches the maximum value.

The vertical air conditioner indoor unit 300 of this embodiment includes: a housing 310 with a cavity defined therein, and an air outlet 320 is opened at the upper and lower portions of the housing 310, and an air inlet 330 is opened at the middle, and the housing 310 includes Front panel 311, rear housing 312, top plate 313, and bottom plate 314; laminar flow fan 110, arranged inside the cavity, is configured to use the viscous effect to make part of the air in the cavity form laminar air, and make the laminar air flow from the upper air outlet 320 blow out; and a single-suction centrifugal fan 510, arranged below the laminar flow fan 110, with its axial direction perpendicular to the front panel 311 and configured to drive part of the air in the cavity to blow out from the lower air outlet 320. The vertical air conditioner indoor unit 300 is equipped with a laminar flow fan 110, which realizes the upper laminar flow air supply through the viscous effect. The air supply process has low noise and high air volume, which effectively improves the user experience; it is also equipped with a single suction centrifugal fan 510, which can Effectively increase the air output and pressure at the lower part.

Further, in the vertical air conditioner indoor unit 300 of this embodiment, the housing 310 is provided with an air outlet 320 around the laminar flow fan 100 on its upper part; or the vertical air conditioner indoor unit 300 may further include: a wind shield 371, There is a notch 373 on the outside of the laminar flow fan 100; the housing 310 is provided with an air outlet 320 at the position corresponding to the notch 373, which can realize the 360° four-sided air supply or three-sided air supply and two-sided air supply for the upper part of the vertical air conditioner indoor unit , One-sided air supply. The laminar flow fan 100 further includes: a drive disc 30, which is arranged at intervals and parallel to one side of the plurality of annular discs 10; and a connecting member, which penetrates the drive disc 30 and the plurality of annular discs 10, to connect the plurality of annular discs The disc 10 is connected to the driving disc 30, and the laminar flow motor 20 is also configured to directly drive the driving disc 30 to rotate, and then the driving disc 30 drives a plurality of annular discs 10 to rotate. The laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340. The fixing frame 350 is provided with a hole 352 in the center. The output shaft 21 of the laminar flow motor 20 passes through the hole 352 and is fixed to the driving disc 30. The connection firmness of the laminar flow fan 100 and the laminar flow motor 20 can be effectively enhanced, and the overall working reliability can be improved.

Furthermore, in the vertical air conditioner indoor unit 300 of this 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 diameters of the multiple annular discs 10 are separated from each other by The drive disc 30 gradually decreases from one side to the other side; the distance between two adjacent annular discs 10 in the plurality of annular discs 10 gradually increases from one side away from the drive disc 30 to the other side; Each annular disk 10 is an arc-shaped disk gradually approaching the driving disk 30 from the center to the edge and protruding toward the side of the driving disk 30. The above-mentioned forms of multiple annular disks 10 can effectively increase the air volume of the laminar flow fan 100, so that the air output of the laminar flow fan 100 meets the user's requirements. In addition, the connecting member may be a connecting piece 40. 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 has a linear relationship with the air volume generated by the laminar flow fan 100. . The arrangement of the connecting piece 40 can effectively increase the wind pressure of the laminar flow fan 100, so that after the laminar air blows out through the gaps between the plurality of annular discs 10, due to the pressure difference, the air outside the laminar flow fan 100 passes through the inlet The wind channel 11 is pressed into the annular disc 10 and reciprocates in this way, thereby forming a laminar air circulation. The multiple air outlets 12 formed by the gaps between the multiple annular disks 10 can enable the laminar flow fan 100 to achieve 360° air supply, avoiding the user's various uncomfortable symptoms caused by direct air supply from the air conditioner, and further improving User experience.

Those skilled in the art should understand that, unless otherwise specified, the terms "up", "down", "left", "right", "front", "rear", etc. in the embodiments of the present invention are used to indicate The terms of the orientation or positional relationship are based on the actual use state of the vertical 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 the device or The component must have a specific orientation, so it cannot be understood as a limitation of the present invention.

So far, those skilled in the art should realize that although a number of exemplary embodiments of the present invention have been illustrated and described in detail herein, they can still be disclosed according to the present invention without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications that conform to the principles of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

An indoor unit of a vertical air conditioner, including:

A housing, which defines a cavity inside, an air outlet is opened at the upper and lower parts of the housing, and an air inlet is opened at the middle, the housing includes a front panel, a rear housing, a top plate and a bottom plate;

The laminar flow fan is arranged inside the cavity and is configured to make use of the viscous effect to make part of the air in the cavity form laminar air, and to blow the laminar air from the upper air outlet; and

The single-suction centrifugal fan is arranged under the laminar flow fan, and its axial direction is perpendicular to the front panel and is configured to drive part of the air in the cavity to blow out from the air outlet at the lower part.
The vertical air conditioner indoor unit according to claim 1, further comprising:

The volute has an inlet and an outlet, and the outlet is arranged opposite to the air outlet at the lower part;

The single-suction centrifugal fan is arranged inside the volute, and is also configured to drive part of the air in the cavity to enter the volute from the inlet, and from the volute after turning twice in the volute The outlet is discharged, and then blown out through the air outlet at the lower part.
The vertical air conditioner indoor unit according to claim 1, wherein the laminar flow fan comprises:

The laminar flow fan is arranged inside the cavity corresponding to the air outlet at the upper part, and the laminar flow fan includes: a plurality of annular discs, which are arranged in parallel with each other and have the same central axis; An air inlet channel is formed in the center of the disks, and the air in the cavity enters the gap between the plurality of annular disks through the air inlet channel; and

The laminar flow motor is connected to the laminar flow fan and is configured to drive the plurality of annular disks to rotate, so that the air boundary layer close to the surface of the plurality of annular disks rotates from the inside to the outside, thereby forming The laminar wind blows out from the air outlet.
The vertical air conditioner indoor unit according to claim 3, wherein:

The laminar flow fan further includes: a drive disc, which is arranged in parallel at intervals on one side of the plurality of annular discs; and a connecting member, which penetrates the drive disc and the plurality of annular discs to separate the The plurality of annular discs are connected to the drive disc,

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.
The vertical air conditioner indoor unit according to claim 4, further comprising:

The fixed plate is provided with a plurality of reinforcing ribs on one side, and a plurality of card slots on the other side; and

The fixing frame is provided with a plurality of claws corresponding to the plurality of clamping grooves facing one side of the fixing plate, so as to connect the layer after the plurality of clamping claws are respectively screwed to the plurality of clamping grooves. The flow motor is fixed between the fixing frame and the fixing plate, wherein a perforation is provided in the center of the fixing frame, and the output shaft of the laminar flow motor is fixed to the driving disc after passing through the perforation.
The vertical air conditioner indoor unit according to claim 4, further comprising:

The draft ring is arranged on the side of the plurality of annular discs away from the driving disc, and

The draft ring is configured to guide part of the air in the cavity into the air inlet channel.
The vertical air conditioner indoor unit according to claim 3, wherein:

The casing is provided with the air outlet on its upper part around the laminar flow fan; or

The vertical air conditioner indoor unit further includes: a windshield, which is provided on the outside of the laminar flow fan and has a gap; and the casing is provided with the air outlet at a position corresponding to the gap.
The vertical air conditioner indoor unit according to claim 4, wherein:

A groove is formed in the center of the driving disc toward the plurality of annular discs, and the laminar flow motor is fixedly arranged in the groove; or

The surface of the drive disc facing the laminar flow motor is flat, and the surface facing the plurality of annular discs has conical protrusions to guide the flow of air entering the laminar flow fan and assist in forming the Laminar wind.
The vertical air conditioner indoor unit according to claim 4, wherein:

The connecting piece is a connecting piece, the cross-section of the connecting piece has two sections of curves sequentially arranged along the direction of rotation of the annular disk, and the length of the chord line of the two sections of the curve and the air volume generated by the laminar flow fan It is a linear relationship.
The vertical air conditioner indoor unit according to claim 9, wherein:

The cross-section of the connecting piece has double arcs arranged in sequence along the direction of rotation of the annular disc: an inner arc and a back arc, and both the inner arc and the back arc face the direction in which the annular disc rotates Protruding, the inner arc and the back arc have the same center and are arranged in parallel or have different centers and both ends intersect.
The vertical air conditioner indoor unit according to claim 4, wherein the plurality of annular disks 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 drive disc to the other side;

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

Each of the annular disks is an arc-shaped disk gradually approaching the driving disk from the center to the edge and protruding toward one side of the driving disk.