CN111442354B

CN111442354B - Indoor machine of vertical air conditioner

Info

Publication number: CN111442354B
Application number: CN201910045446.9A
Authority: CN
Inventors: 李英舒; 戴现伟; 尹晓英; 王晶晶; 王永涛
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2023-04-28
Anticipated expiration: 2039-01-17
Also published as: WO2020147785A1; CN111442354A

Abstract

The invention provides an indoor unit of a vertical air conditioner. Wherein the vertical air conditioner indoor unit includes: the shell is internally limited with a cavity, the upper part of the shell is provided with an air outlet, and the middle part of the shell is provided with an air inlet; the laminar flow fan is arranged in the cavity and is configured to form laminar flow wind by using the viscous effect and blow the laminar flow wind out of the air outlet; and an axial flow fan arranged below the laminar flow fan and configured to blow air at the lower part of the cavity to the laminar flow fan. The indoor unit of the vertical air conditioner is provided with the laminar air blower, laminar air supply is realized through the viscous effect, the noise in the air supply process is low, the air quantity is high, and the use experience of a user is effectively improved. The axial flow fan can effectively improve the air quantity entering the laminar flow fan, and further improve the working efficiency of the laminar flow fan.

Description

Indoor machine of vertical air conditioner

Technical Field

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

Background

With the development of society and the continuous improvement of living standard of people, various air conditioning apparatuses have become one of the indispensable electrical devices in people's daily life. Various air conditioning devices can help people reach an adaptable temperature when the ambient temperature is too high or too low.

The current air conditioner adjusting device mainly comprises various types of air conditioners and fans, but most users consider that hot air or cold air generated by the current air conditioners is unevenly distributed in a room or a closed space, and the current air conditioner has certain distribution limitation. In addition, fans used in indoor units of air conditioners are mainly centrifugal fans and cross-flow fans. Centrifugal fans and cross-flow fans have the following problems: because the centrifugal fan needs to increase wind pressure and wind quantity by dozens of large-volume blades, the centrifugal fan has high noise, and when the centrifugal fan is used for the indoor unit of the vertical air conditioner, the air needs to be turned in two directions of 90 degrees from entering the centrifugal fan to being sent out of the air conditioner, and the wind quantity is lost in each direction turning; although the cross flow fan has low noise, the air pressure is too small and the air supply distance is short. And the whole volume of the cross-flow fan is large, and the actual effective volume is small, so that space waste is caused.

Disclosure of Invention

The invention aims to provide a vertical air conditioner indoor unit with low noise, high air quantity and high air pressure.

The invention further aims to enable the indoor unit of the vertical air conditioner to realize 360-degree air supply, avoid direct air-out and improve the use experience of users.

In particular, the present invention provides a floor air conditioner indoor unit comprising: the shell is internally limited with a cavity, the upper part of the shell is provided with an air outlet, and the middle part of the shell is provided with an air inlet; the laminar flow fan is arranged in the cavity and is configured to form laminar flow wind by using the viscous effect and blow the laminar flow wind out of the air outlet; and an axial flow fan arranged below the laminar flow fan and configured to blow air at the lower part of the cavity to the laminar flow fan.

Optionally, the laminar flow fan comprises: laminar flow fan sets up in the cavity inside of corresponding air outlet, and laminar flow fan includes: the annular discs are arranged in parallel at intervals and have the same central axis, the centers of the annular discs are jointly provided with an air inlet channel, and air in the cavity enters gaps among the annular discs through the air inlet channel; and a laminar flow motor connected with the laminar flow fan and configured to drive the plurality of annular disks to rotate so as to enable an air boundary layer close to the surfaces of the plurality of annular disks to rotationally move from inside to outside, thereby forming laminar flow wind to be blown out from the air outlet.

Optionally, the axial flow fan includes: an axial flow fan and an axial flow motor, wherein the axial flow motor drives the axial flow fan to rotate so that air flows along the axial direction of the axial flow fan and upwards enters the air inlet channel.

Optionally, the laminar flow fan further comprises: the driving discs are arranged on one sides of the plurality of annular discs at intervals in parallel; and a connector extending through the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk, the laminar flow motor further configured to: the driving disc is directly driven 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: one side of the fixed plate is provided with a plurality of reinforcing ribs, and the other side of the fixed plate is provided with a plurality of clamping grooves; and a plurality of clamping claws corresponding to the clamping grooves are arranged on one side of the fixing frame facing the fixing plate, so that the laminar flow motor is fixed between the fixing frame and the fixing plate after the clamping claws are respectively connected with the clamping grooves in a threaded mode, a through hole is formed in the center of the fixing frame, and an output shaft of the laminar flow motor passes through the through hole and is fixed with the driving disc.

Optionally, the indoor unit of the vertical air conditioner further includes: the two air guiding rings are arranged on one side of the plurality of annular discs, which is far away from the driving disc, and the other air guiding ring is arranged outside the axial flow fan and is configured to guide air in the cavity to enter the air inlet channel.

Optionally, the shell is provided with an air outlet at the upper part of the shell around the laminar flow fan; or the vertical air conditioner indoor unit further comprises: the wind shielding piece is arranged outside the laminar flow fan and is provided with a notch; the shell is provided with an air outlet at the position corresponding to the notch.

Optionally, a groove is formed towards the plurality of annular discs at the center of the driving disc, and the laminar flow motor is fixedly arranged in the groove; or the surface of the driving disc facing the laminar flow motor is plane, and the surface facing the plurality of annular discs is provided with conical protruding parts so as to guide the air flow entering the laminar flow fan and assist in forming laminar flow wind.

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

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

Optionally, the plurality of annular disks are arranged in one or more of the following configurations: the inner diameters of the plurality of annular discs gradually decrease from one side far away from the driving disc to the other side; the interval between two adjacent annular disks in the plurality of annular disks gradually increases from one side far away from the driving disk to the other side; each annular disc is an arc disc gradually approaching the driving disc from the center to the edge and protruding towards one side of the driving disc.

The indoor unit of the vertical air conditioner of the invention comprises: the shell is internally limited with a cavity, the upper part of the shell is provided with an air outlet, and the middle part of the shell is provided with an air inlet; the laminar flow fan is arranged in the cavity and is configured to form laminar flow wind by using the viscous effect and blow the laminar flow wind out of the air outlet; and an axial flow fan arranged below the laminar flow fan and configured to blow air at the lower part of the cavity to the laminar flow fan. The indoor unit of the vertical air conditioner is provided with the laminar air blower, laminar air supply is realized through the viscous effect, noise in the air supply process is low, air quantity is high, and the use experience of a user is effectively improved. The axial flow fan can effectively improve the air quantity entering the laminar flow fan, and further improve the working efficiency of the laminar flow fan.

Further, in the indoor unit of the vertical air conditioner, the shell is provided with the air outlet around the laminar flow fan at the upper part of the shell; or the floor air conditioner indoor unit may further include: the wind shielding piece is arranged outside the laminar flow fan and is provided with a notch; the shell is provided with the air outlet at the position corresponding to the notch, so that 360-degree four-side air supply or three-side air supply, two-side air supply and one-side air supply of the indoor unit of the vertical air conditioner can be realized. The laminar flow fan further comprises: the driving discs are arranged on one sides of the plurality of annular discs at intervals in parallel; and a connector extending through the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk, the laminar flow motor further configured to: the driving disc is directly driven to rotate, and then the driving disc drives the plurality of annular discs to rotate. The laminar flow motor is fixed between the fixing frame and the fixing plate, wherein a perforation is formed in the center of the fixing frame, and an output shaft of the laminar flow motor penetrates through the perforation and then is fixed with the driving disc. The connection firmness of the laminar flow fan and the laminar flow motor can be effectively enhanced, and the overall working reliability is improved.

Further, in the indoor unit of the vertical air conditioner of the present invention, the plurality of annular disks of the laminar flow fan may be arranged according to one or more of the following structures: the inner diameters of the plurality of annular discs gradually decrease from one side far away from the driving disc to the other side; the interval between two adjacent annular disks in the plurality of annular disks gradually increases from one side far away from the driving disk to the other side; each annular disc is an arc disc gradually approaching the driving disc from the center to the edge and protruding towards one side of the driving disc. The form that sets up a plurality of annular discs all can effectively promote the amount of wind of laminar flow fan for the air-out of laminar flow fan satisfies user's user demand. In addition, the connecting piece can be the connection piece, and the cross section of connection piece has two sections curves that set gradually along annular disc rotatory direction, and the chord length of two sections curves is linear relation with the amount of wind that laminar flow fan produced. The arrangement of the connecting sheet can effectively promote the wind pressure of the laminar flow fan, so that after laminar flow wind is blown out through gaps among the annular discs, air outside the laminar flow fan is pressed into the annular discs through the air inlet channel under the action of pressure difference, and the laminar flow fan is circulated in such a way, so that laminar flow air circulation is formed. The plurality of air outlets formed by the gaps among the plurality of annular discs can enable the laminar flow fan to realize 360-degree air supply, so that various uncomfortable symptoms caused by direct air supply of the air conditioner by a user are avoided, and the use experience of the user is further improved.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic diagram of an indoor unit of a prior art vertical air conditioner using a centrifugal fan;

fig. 2 is a schematic view showing the overall structure of an indoor unit of a floor air conditioner according to a first embodiment of the present invention;

fig. 3 is a partial structural schematic view of the indoor unit of the neutral type air conditioner of fig. 2;

FIG. 4 is an exploded schematic view of components of the indoor unit of the neutral air conditioner of FIG. 2;

fig. 5 is a schematic diagram of the overall structure of an indoor unit of a floor air conditioner according to a second embodiment of the present invention;

fig. 6 is a partial structural schematic view of the indoor unit of the neutral air conditioner of fig. 5;

FIG. 7 is a schematic exploded view of the components of the indoor unit of the neutral air conditioner of FIG. 5;

fig. 8 is a schematic view showing the overall structure of an indoor unit of a floor air conditioner according to a third embodiment of the present invention;

Fig. 9 is a partial structural schematic view of the indoor unit of the neutral air conditioner of fig. 8;

FIG. 10 is an exploded schematic view of the components of the indoor unit of the neutral air conditioner of FIG. 8;

fig. 11 is a schematic view showing the overall structure of an indoor unit of a floor air conditioner according to a fourth embodiment of the present invention;

fig. 12 is a partial structural schematic view of the indoor unit of the neutral air conditioner of fig. 11;

FIG. 13 is a schematic exploded view of the components of the indoor unit of the neutral air conditioner of FIG. 11;

FIG. 14 is a schematic view of air circulation of a laminar fan in a floor air conditioner indoor unit according to one embodiment of the present invention;

FIG. 15 is a schematic diagram of a flow fan in an indoor unit of a stand air conditioner according to an embodiment of the present invention;

FIG. 16 is a velocity profile and force profile of a laminar fan in a floor air conditioner indoor unit according to one embodiment of the present invention;

FIG. 17 is a schematic diagram of a laminar flow fan with a drive disk having grooves;

FIG. 18 is a schematic diagram of a structure of the laminar fan of FIG. 17 from another perspective;

FIG. 19 is a schematic view of the laminar fan of FIG. 17 from yet another perspective;

FIG. 20 is a cross-sectional view of the laminar fan of FIG. 17;

FIG. 21 is a schematic illustration of the connection of the laminar flow fan of FIG. 17 to a laminar flow motor;

FIG. 22 is a schematic view of an explosion of the components of the laminar flow motor, the mounting plate and the mount;

FIG. 23 is a schematic diagram of a laminar flow fan with a drive disk having conical projections connected to a laminar flow motor;

FIG. 24 is a schematic view of the structure of the laminar fan of FIG. 23 from another perspective;

FIG. 25 is a schematic cross-sectional view of the laminar fan of FIG. 23;

FIG. 26 is a schematic diagram showing the relationship between the chord length of the connecting piece in FIG. 25 and the air volume and air pressure;

FIG. 27 is a schematic view showing the relationship between the mounting angle of the connecting piece in FIG. 25 and the wind volume and wind pressure;

FIG. 28 is a schematic cross-sectional view of a laminar flow fan with aero vanes;

FIG. 29 is a schematic view of the mounting angle of the air blades of the laminar fan of FIG. 28 as a function of air volume and air pressure;

FIG. 30 is a schematic diagram of a connection of a laminar fan with a plurality of annular disk pitches;

FIG. 31 is a schematic diagram of the connection of the laminar fan of FIG. 30 to another view of the laminar motor;

FIG. 32 is a graphical illustration of the progression of annular disk spacing versus air volume and pressure for the laminar fan of FIG. 30;

FIG. 33 is a partial cross-sectional view of a laminar flow fan having a plurality of annular disks with a tapered inner diameter;

FIG. 34 is a graph showing the relationship between the inner diameter gradient of the plurality of annular disks of the laminar fan of FIG. 33 and the air volume and air pressure;

FIG. 35 is a schematic view of the central angle of the inner and outer diameter lines of a laminar fan having circular disks of the same longitudinal section through the central axis; and

Fig. 36 is a schematic diagram showing the relationship between the central angle and the air volume and the air pressure in fig. 35.

Detailed Description

Fig. 1 is a schematic diagram of air supply of an indoor unit of a vertical air conditioner using a centrifugal fan in the prior art. The two arrows in fig. 1 show the direction of air flow during the air supply process of the centrifugal fan 200 when applied to the indoor unit of the vertical air conditioner, and the centrifugal fan 200 in the prior art needs to make two 90-degree turns from air inlet to air outlet during the whole process of the indoor unit of the vertical air conditioner, and each turn is accompanied by more air volume loss. In addition, the centrifugal fan 200 generally requires several tens of large-volume blades to increase wind pressure and wind volume, and when the centrifugal fan 200 is operated, the rotation of the blades rubs or impacts with air. The centrifugal fan 200 has a wide blade and a large thickness, and thus generates a very loud noise when the motor of the centrifugal fan 200 is operated at a high speed. In addition, a cross-flow fan is also commonly used in the prior art, but the noise of the cross-flow fan is low, but the wind pressure is too small, and the air supply distance is short; and the whole volume of the cross-flow fan is large, and the actual effective volume is small, so that space waste is caused. The embodiment provides a vertical air conditioner indoor unit, is provided with laminar flow fan, realizes laminar flow air supply through the viscous effect, and air supply process noise is little, the wind volume is high, the wind pressure is big, effectively promotes user's use experience.

Fig. 2 is a schematic overall structure of a stand air conditioner indoor unit 300 according to a first embodiment of the present invention, fig. 3 is a schematic partial structure of the stand air conditioner indoor unit 300 of fig. 2, and fig. 4 is a schematic exploded view of components of the stand air conditioner indoor unit 300 of fig. 2. Fig. 5 is a schematic overall structure of a stand air conditioner indoor unit 300 according to a second embodiment of the present invention, fig. 6 is a schematic partial structure of the stand air conditioner indoor unit 300 of fig. 5, and fig. 7 is a schematic exploded view of components of the stand air conditioner indoor unit 300 of fig. 5. Fig. 8 is a schematic overall structure of a stand air conditioner indoor unit 300 according to a third embodiment of the present invention, fig. 9 is a schematic partial structure of the stand air conditioner indoor unit 300 of fig. 8, and fig. 10 is a schematic exploded view of components of the stand air conditioner indoor unit 300 of fig. 8. Fig. 11 is a schematic overall structure of a stand air conditioner indoor unit 300 according to a fourth embodiment of the present invention, fig. 12 is a schematic partial structure of the stand air conditioner indoor unit 300 of fig. 11, and fig. 13 is a schematic exploded view of components of the stand air conditioner indoor unit 300 of fig. 11. Fig. 14 is a schematic diagram of air circulation of the laminar fan 100 in the indoor unit 300 of the floor air conditioner according to an embodiment of the present invention, fig. 15 is a schematic diagram of air supply of the laminar fan 100 in the indoor unit 300 of the floor air conditioner according to an embodiment of the present invention, and fig. 16 is a velocity distribution and a stress distribution diagram of the laminar fan 100 in the indoor unit 300 of the floor air conditioner according to an embodiment of the present invention. Fig. 17 is a schematic structural view of a laminar flow fan 100 driving a disc 30 to have a groove 32, fig. 18 is a schematic structural view of the laminar flow fan 100 of fig. 17 from another view, fig. 19 is a schematic structural view of the laminar flow fan 100 of fig. 17 from another view, and fig. 20 is a sectional view of the laminar flow fan 100 of fig. 17. As shown in fig. 2 to 14, the floor air conditioner indoor unit 300 may generally include: a housing 310, a laminar flow fan 110, and an axial flow fan 400.

Wherein, a cavity is defined in the housing 310, an air outlet 320 is provided at the upper portion of the housing 310, and an air inlet 330 is provided at the middle portion. 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 includes a rear panel 315 and two side panels 316. An air deflector 321 may be disposed at the air outlet 320 of the housing 310 to adjust the air outlet direction of the indoor unit 300 of the floor air conditioner. The air inlet 330 of the housing 310 may be provided in the form of an air inlet grill, and may suck indoor air into the cavity through different directions and filter the air.

The laminar flow fan 110 may be disposed inside the cavity, configured to generate laminar flow wind using a viscous effect, and to blow the laminar flow wind out of the air outlet 320. The laminar flow fan 110 may include a laminar flow fan 100 and a laminar flow motor 20. Wherein the laminar flow fan 100 is disposed inside the cavity corresponding to the air outlet 320, and the laminar flow fan 100 comprises: the plurality of annular disks 10 are arranged in parallel at intervals and have the same central axis, the centers of the plurality of annular disks 10 are formed together with an air inlet passage 11, and air in the cavity enters the gap between the plurality of annular disks 10 through the air inlet passage 11. And a laminar flow motor 20 connected to the laminar flow fan 100 and configured to drive the plurality of annular disks to rotate so that the air boundary layer 13 near the surfaces of the plurality of annular disks is rotationally moved from inside to outside, thereby forming laminar flow wind blown out from the air outlet 320.

The axial flow fan 400 may be disposed below the laminar flow fan 110 and configured to blow air in a lower portion of the cavity toward the laminar flow fan 110. The axial flow fan 400 may include: an axial flow fan 410 and an axial flow motor 420, wherein the axial flow motor 420 drives the axial flow fan 410 to rotate so that air flows axially along the axial flow fan 410 and upward into the air intake passage 11. The axial flow fan 400 can effectively improve the air quantity entering the air inlet channel 11 of the laminar flow fan 100, and further improve the overall working efficiency of the laminar flow fan 110.

Specifically, the laminar flow motor 20 drives the plurality of annular disks to rotate, so that the plurality of annular disks contact air between each other and move with each other, and the plurality of annular disks, which are rotated by the viscous effect, drive the air boundary layer 13 near the surfaces of the plurality of annular disks to rotate from inside to outside to form laminar flow wind. A plurality of air outlets 12 are formed in gaps between the plurality of annular disks, each air outlet 12 is capable of supplying air at 360 degrees, and laminar air discharged from the air outlet 12 is blown out to the environment outside the indoor unit 300 of the vertical air conditioner through the air outlet 320. The laminar flow fan can realize 360-degree air supply, but the air outlet 320 can be arranged according to actual conditions, and can respectively realize four-side air supply, three-side air supply, two-side air supply or single-side air supply.

The housing 310 may be provided with an air outlet 320 at an upper portion thereof around the laminar flow fan 100 for four-sided air supply, i.e., 360 ° air supply. Alternatively, the floor air conditioner indoor unit 300 may further include: a wind shielding piece 371 which is arranged outside the laminar flow fan 100 and is provided with a notch 373; the housing 310 is provided with an air outlet 320 at a position corresponding to the notch 373. Three-side air supply, two-side air supply or three-side air supply can be realized according to the size of the notch 373 and the corresponding air outlet 320.

As shown in fig. 14, the laminar flow fan 100 may further include: a drive disc 30 and a connecting member. Wherein the driving disks 30 are disposed in parallel at intervals on one side of the plurality of annular disks 10. A connection member penetrates the driving disk 30 and the plurality of annular disks 10 to connect the plurality of annular disks 10 to the driving disk 30. As shown in fig. 17, the connector may be a connecting tab 40. Laminar flow motor 20 may also be configured to: the driving disc 30 is directly driven to rotate, and the driving disc 30 drives the plurality of annular discs 10 to rotate. That is, the above-mentioned configuration of the laminar flow motor 20 to drive the plurality of annular disks 10 is dependent on the laminar flow motor 20 first driving the driving disk 30 to rotate and then the driving disk 30 driving the plurality of annular disks 10 to rotate. In a specific embodiment, the radius of the driving disc 30 is the same as the outer diameters of the plurality of annular discs 10, and the driving disc and the outer diameters of the plurality of annular discs 10 may be both set in a certain range, for example, 170 mm to 180 mm, so as to restrict the transverse occupied volume of the laminar flow fan 100, and restrict the longitudinal thickness of the laminar flow fan 100 by matching with the number of the annular discs 10 and the spacing between two adjacent annular discs 10, so that the overall occupied volume of the laminar flow fan 100 can be effectively restricted. The inner diameter of the annular disk 10 refers to the radius of the inner circumference thereof; the outer diameter refers to the radius of the outer circumference thereof. The specific values of the outer diameter of the annular disc 10 described above are exemplary only and are not limiting of the invention.

The vertical air conditioner indoor unit 300 may further include an evaporator disposed inside the cavity corresponding to the air inlet 330 and configured to exchange heat with air entering the cavity through the air inlet 330. The evaporator may be a U-type evaporator 381, a flat plate evaporator 382, or the like. In addition, a water tray 390 may be provided under the various evaporators to receive condensed water generated by the evaporators.

The stand type air conditioner indoor unit 300 may further include two induced draft rings 360, one disposed at a side of the plurality of annular disks 10 remote from the driving disk 30, and the other disposed outside the axial flow fan 410. And, the induced draft ring 360 is configured to guide air in the cavity into the air intake passage 11. The air entering the cavity through the air inlet 330 is firstly subjected to heat exchange through the evaporator, and the air after heat exchange is guided into the air inlet channel 11 of the laminar flow fan 100 through the air guiding ring 360.

The following describes several embodiments of the indoor unit 300 of the floor air conditioner:

embodiment one: as shown in fig. 2 to 4, the indoor unit 300 of the vertical air conditioner of the present embodiment is provided with two U-shaped evaporators 381 vertically disposed up and down, the cross section of the U-shaped evaporators 381 is U-shaped, and the U-shaped opening is directed toward the front panel 311. The air inlet 330 is disposed on the rear panel 315 and two side panels 316 of the rear housing 312, i.e., three-sided air inlet. That is, the two U-shaped evaporators 381 are disposed corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can exchange heat through the two U-shaped evaporators 381. The first partition plate 383 is further disposed in front of the two U-shaped evaporators 381, so that air after heat exchange can be prevented from flowing to the front of the cavity, and the first partition plate 383 in this embodiment is in a flat plate shape. A second partition 384 may be further provided between the two U-shaped evaporators 381, so that the two U-shaped evaporators 381 can be prevented from interfering with each other. Part of the heat exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the upper air guiding ring 360, and the other part enters the air inlet channel 11 of the laminar flow fan 100 through the blowing action of the axial flow fan 400 and the guiding action of the lower air guiding ring 360. The air entering the air inlet channel 11 then enters between the annular disks of the laminar flow fan 100. The casing 310 of the indoor unit 300 of the vertical air conditioner of the present embodiment is provided with an air outlet 320 around the laminar flow fan 100 at the upper portion thereof. Specifically, the front panel 311, the rear panel 315 of the rear case 312, and the upper parts of the two side panels 316 of the vertical air conditioner indoor unit 300 of the present embodiment are provided with air outlets 320, and laminar air formed by the laminar air fan 100 is blown out from the air outlets 320, so that 360 ° air supply can be realized.

Embodiment two: as shown in fig. 5 to 7, the floor air conditioner indoor unit 300 of the present embodiment is provided with a single U-shaped evaporator 381, the U-shaped evaporator 381 being vertically placed inside the cavity and having a U-shaped cross section with a U-shaped opening toward the front panel 311. The air inlet 330 is disposed on the rear panel 315 and two side panels 316 of the rear housing 312, i.e., three-sided air inlet. That is, the U-shaped evaporator 381 is disposed corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can exchange heat through the U-shaped evaporator 381. The front of the U-shaped evaporator 381 is further provided with a first partition plate 383, so that the air after heat exchange can be prevented from flowing to the front of the cavity, and the first partition plate 383 in this embodiment is flat. Part of the heat exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the upper air guiding ring 360, and the other part enters the air inlet channel 11 of the laminar flow fan 100 through the blowing action of the axial flow fan 400 and the guiding action of the lower air guiding ring 360. The air entering the air inlet channel 11 then enters between the annular disks of the laminar flow fan 100. The wind shielding member 371 of the present embodiment may be flat, and the outer side of the periphery of the laminar flow fan 100, which is not shielded by the wind shielding member 371, is the notch 373. Since the wind shielding member 371 is provided with the notches 373 on the front side and the left and right sides of the periphery of the laminar flow fan 100, the front panel 311 and the two side panels 316 of the rear case 312 of the vertical air conditioner indoor unit 300 of the embodiment are provided with the air outlets 320, and the laminar flow air formed by the laminar flow fan 100 is blown out from the air outlets 320, so that three-sided air supply can be realized.

Embodiment III: as shown in fig. 8 to 10, the indoor unit 300 of the floor air conditioner of the present embodiment is provided with two evaporators 382 disposed vertically, and the evaporators 382 are flat and parallel to the side panels 316. The air inlet 330 is disposed on two side panels 316 of the rear housing 312, i.e., two-sided air inlet. That is, the two evaporators 382 are disposed corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can exchange heat through the two evaporators 382. The front and rear sides of the two evaporators 382 are further provided with first partitions 383, respectively, so that the air after heat exchange can be prevented from flowing to the front and rear sides of the cavity, and the first partitions 383 in the embodiment are flat plates. Part of the heat exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the upper air guiding ring 360, and the other part enters the air inlet channel 11 of the laminar flow fan 100 through the blowing action of the axial flow fan 400 and the guiding action of the lower air guiding ring 360. The air entering the air inlet channel 11 then enters between the annular disks of the laminar flow fan 100. The casing 310 of the indoor unit 300 of the vertical air conditioner of the present embodiment is provided with an air outlet 320 around the laminar flow fan 100 at the upper portion thereof. Specifically, the front panel 311, the rear panel 315 of the rear case 312, and the upper parts of the two side panels 316 of the vertical air conditioner indoor unit 300 of the present embodiment are provided with air outlets 320, and laminar air formed by the laminar air fan 100 is blown out from the air outlets 320, so that 360 ° air supply can be realized.

Embodiment four: as shown in fig. 11 to 13, the floor air conditioner indoor unit 300 of the present embodiment is provided with a single flat evaporator 382, the flat evaporator 382 being vertically placed inside the cavity and being parallel to the front panel 311. The air inlet 330 is disposed on the rear panel 315 of the rear case 312, i.e., single-sided air inlet. That is, the flat evaporator 382 is disposed corresponding to the air inlet 330, and the air entering the cavity from the air inlet 330 can exchange heat through the flat evaporator 382. The front of the flat evaporator 382 is further provided with a first partition plate 383, so that the air after heat exchange can be prevented from flowing to the front of the cavity, the first partition plate 383 in the embodiment is U-shaped, and the U-shaped opening faces the flat evaporator 382. Part of the heat exchanged air enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the upper air guiding ring 360, and the other part enters the air inlet channel 11 of the laminar flow fan 100 through the blowing action of the axial flow fan 400 and the guiding action of the lower air guiding ring 360. The air entering the air inlet channel 11 then enters between the annular disks of the laminar flow fan 100. The wind shielding member 371 of the present embodiment may be flat, and the outer side of the periphery of the laminar flow fan 100, which is not shielded by the wind shielding member 371, is the notch 373. Since the wind shielding member 371 is provided with the notches 373 on the front side and the left and right sides of the periphery of the laminar flow fan 100, the front panel 311 and the two side panels 316 of the rear case 312 of the vertical air conditioner indoor unit 300 of the embodiment are provided with the air outlets 320, and the laminar flow air formed by the laminar flow fan 100 is blown out from the air outlets 320, so that three-sided air supply can be realized.

In other embodiments, the wind shielding member 371 may be in a shell shape and wrapped around the outside of the laminar flow fan 100, and the notch 373 is only disposed on the front side of the periphery of the laminar flow fan 100, so that the indoor unit 300 of the vertical air conditioner may be provided with the air outlet 320 only on the front panel 311 to realize single-sided air supply. However, the notch 373 is provided corresponding to the air outlet 320 regardless of the shape of the wind shielding member 371. For example, the wind shielding piece 371 can exhaust three sides of the laminar air formed by the laminar air fan 100, and the air outlets 320 at the three sides are correspondingly provided with three; the wind shielding member 371 can enable the laminar wind formed by the laminar fan 100 to be exhausted from one side, and the air outlet 320 is correspondingly provided with one. The wind shielding piece 371 can ensure that laminar wind formed by the laminar flow fan 100 is not blown to other places in the cavity except the air outlet 320, so that normal operation of other parts in the cavity is not affected.

As shown in fig. 14, the centers of the plurality of annular disks 10 are commonly formed with an air inlet passage 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 annular disks 10 for laminar air to flow out. The air boundary layer 13 is rotated from inside to outside to form laminar air, and thus the velocity of the laminar air is greater when leaving the air outlet 12 than when entering the air inlet channel 11. The pressure difference between the air outlet 12 of the laminar flow fan 100 and the inlet of the air inlet channel 11 is wind pressure. The plurality of air outlets 12 formed by the gaps between the plurality of annular discs 10 can enable the laminar flow fan 100 to realize 360-degree uniform air supply, avoid various uncomfortable symptoms caused by direct air supply of the indoor unit 300 of the vertical air conditioner, and further improve the use experience of users.

The air supply principle of the laminar flow fan 100 mainly originates from a "tesla turbine" found in nikola tesla. Tesla turbines mainly utilize the "laminar boundary layer effect" or "viscous effect" of a fluid to achieve the objective of doing work on "turbine disks". The laminar fan 100 of the present embodiment drives the driving disc 30 through the laminar motor 20, the driving disc 30 drives the plurality of annular discs 10 to rotate at a high speed, and the air in the space between the annular discs 10 contacts and moves with each other, so that the air boundary layer 13 near the surface of each annular disc 10 is driven by the rotating annular disc 10 to rotate from inside to outside to form laminar air due to the action of the viscous shearing force τ.

FIG. 16 showsA schematic representation of the viscous shear force distribution τ (y) and the velocity distribution u (y) experienced by the air boundary layer 13 is shown. The viscous shear force experienced by the air boundary layer 13 is actually the drag that each annular disk 10 generates on the air boundary layer 13. The axis of abscissa in fig. 16 refers to the distance in the moving direction of the air boundary layer 13, and the axis of ordinate refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. v _e For the air flow velocity at each point within the air boundary layer 13, δ is the thickness of the air boundary layer 13, τ _w Is a 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 air boundary layer 13 in cross section in the direction perpendicular to the moving direction, and L is the distance between a certain point of the inner circumference of the annular disk 10 and a certain point of the surface of the annular disk 10. τ (y) is the viscous shear force distribution experienced at this distance L when the height of the air boundary layer 13 cross section is y; u (y) is the velocity distribution at this distance L at which the height of the air boundary layer 13 cross section is y.

The driving disk 30 of the laminar flow fan 100 shown in fig. 17 to 20 is formed with a groove 32 toward the plurality of annular disks 10 at the center, and the laminar flow motor 20 is fixedly disposed in the groove 32. Fig. 21 is a schematic diagram illustrating connection between the laminar flow fan 100 and the laminar flow motor 20 in fig. 17, and fig. 22 is an exploded schematic diagram illustrating components of the laminar flow motor 20, the fixing plate 340 and the fixing frame 350. As shown in fig. 21 and 22, the floor air conditioner indoor unit 300 may further include: a fixing plate 340 and a fixing frame 350. Wherein, 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 grooves 342. Wherein 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 towards 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 into the plurality of clamping grooves 342, wherein a through 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 through hole 352 and is fixed with the driving disc 30. With the laminar flow fan 100 shown in fig. 17 to 20, since the center of the driving disk 30 is formed with the grooves 32 toward the plurality of annular disks 10, the output shaft 21 of the laminar flow motor 20 is fixedly disposed in the grooves 32 of the driving disk 30 after passing through the perforation 352.

Fig. 23 is a schematic connection diagram of the laminar flow fan 100 having the conical protrusion 31 of the driving disk 30 and the laminar flow motor 20, fig. 24 is a schematic structural diagram of another view of the laminar flow fan 100 of fig. 23, and fig. 25 is a schematic cross-sectional diagram of the laminar flow fan 100 of fig. 23. The surface of the driving disk 30 of the laminar flow fan 100 in fig. 23 to 25 facing the laminar flow motor 20 is a plane, and the surface facing the plurality of annular disks 10 has a conical protrusion 31 to guide the flow of air entering the laminar flow fan 100 and to assist in forming laminar wind.

The driving disc 30 is mainly used for fixedly receiving the laminar flow motor 20 and is connected with the plurality of annular discs 10 through connecting pieces 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. With the laminar flow fan shown in fig. 23 to 25, since the surface of the driving disk 30 facing the laminar flow motor 20 is a plane, the output shaft 21 of the laminar flow motor 20 is fixedly disposed on the plane side of the driving disk 30 after passing through the perforation 352. The surface of the driving disc 30 of the laminar flow fan 100 facing the plurality of annular discs 10 shown in fig. 23 to 25 has conical protrusions 31, which can effectively guide the air entering the laminar flow fan 100 through the air inlet channel 11 into the gaps between the annular discs 10, thereby improving the efficiency of forming laminar air.

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

It should be noted that the two

curves

41 and 42 may be circular arcs, non-circular arcs, straight lines, and the like, and the straight line may be a special curve. When the distance between the ends of curve 41 is the same as the distance between the ends of curve 42, the chord line 51 length may be the distance between the ends of curve 41 or 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 are not intersected, the length of the chord line 51 may be the length of the connecting line of the middle point of the curve of the cross section of the connecting sheet 40 except the

curves

41 and 42; if only one end of the curve 41 and the curve 42 intersect, the chord line 51 length may be the length of the line connecting the midpoint of the curve of the cross section of the connecting piece 40 except for the

curves

41, 42 and the end points of the intersection.

As shown in fig. 25, the connection piece 40 may be a double-circular arc blade 401 having a cross section with double circular arcs sequentially arranged in the direction in which the annular disk 10 rotates: the inner arc 41 and the back arc 42 are both convex towards the rotating direction of the annular disc 10, have the same circle center and are arranged in parallel. Fig. 25 is a schematic cross-sectional view of the laminar flow fan 100 in a plan view, in which the laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the direction in which the back arc 42 and the inner arc 41 protrude coincides with the direction in which the annular disk 10 rotates. In other embodiments, the laminar motor 20 may also drive the annular disk 10 to rotate counter-clockwise, where the back and

inner arcs

42, 41 may be raised in a direction opposite to that shown in FIG. 25.

Fig. 26 is a schematic diagram showing the relationship between the length of the string 51 of the connecting piece 40 and the air volume and air pressure in fig. 25. Since the connecting piece 40 of the laminar fan 100 in fig. 25 is a double-circular arc blade 401, the distance between the two ends of the inner arc 41 is the same as the distance between the two ends of the back arc 42, and the length of the chord line 51 may be the distance between the two ends of the inner arc 41 or the back arc 42. In fig. 26, the abscissa axis Blade chord refers to the length of the chord line 51 of the connection piece 40 of the laminar flow fan 100, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 26 shows a schematic diagram of the relationship between the length of the chord line 51 and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the distance, the thickness, the mounting 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 are all kept unchanged. The mounting angle of the connecting piece 40 of the present embodiment may be: the chord line 51 between the ends of the inner arc 41 forms an angle with the outer diameter 52 of the annular disk 10 passing the midpoint of the chord line 51, in the same cross section of the web 40 and the annular disk 10.

When the above-mentioned parameters are all kept unchanged, for example, 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 layers of the annular disk 10 is 8, the interval between the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the mounting angle of the connecting piece 40 is 25.5 °, and the rotation speed of the laminar motor 20 is 1000rpm (revolutions per minute ), it can be found that after the length of the chord line 51 is increased, the air volume and the air pressure are greatly increased, and are basically linear. Given the limited space available in the floor air conditioner indoor unit 300, there is a need for some restriction on the overall footprint of the laminar flow fan 100. When the outer diameter and the inner diameter of the annular disk 10 are constant, the longer the chord line 51 is, the larger the air volume and the air pressure of the laminar fan 100 are, but the length of the chord line 51 is also restricted to a certain extent, so that the connection piece 10 is prevented from penetrating through the annular disk 10 excessively, and the stability of the laminar fan 100 is prevented from being lowered. In summary, the chord line 51 length may be set to the maximum range achievable so that the air volume and wind pressure of the laminar flow fan 100 meet the user's use requirements.

Therefore, in the above preferred embodiment, the length of the string 51 is set to the maximum range achievable with the stability of the laminar flow fan 100 ensured as follows: 40 mm to 42 mm. When the length of the string 51 is set to 42 mm, the air volume of the laminar flow fan 100 can reach 1741m ³ And/h, the wind pressure can reach 118.9Pa, and the use requirement of a user can be completely met. At this time, the difference between the outer diameter and the inner diameter of the annular disk 10 is 60 mm, the length of the string 51 is set to 42 mm, so that the two ends of the inner arc 41 and the back arc 42 have distances of about 9 mm from the inner circumference and the outer circumference of the annular disk 10 respectively, and the length of the string 51 is set to the maximum range which can be reached on the premise of ensuring the stability of the laminar flow fan 100, so that the air quantity and the wind pressure of the laminar flow fan 100 can meet the use requirements of users.

Fig. 27 is a schematic diagram showing the relationship between the installation angle α of the connection piece 40 in fig. 25 and the wind volume and wind pressure. Since the connection piece 40 of the laminar fan 100 in fig. 25 may be a double circular arc blade 401, the installation angle α of the connection piece 40 actually refers to: the chord line 51 between the two ends of the inner arc 41 forms an angle with the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51, in the same cross section of the bi-circular arc blade 401 and the annular disk 10. The abscissa axis Metal angle (α) in fig. 27 refers to the installation angle of the double-circular arc blade 401 of the laminar fan 100, that is, the angle formed by the chord line 51 between both end points of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51, on the same cross section of the double-circular arc blade 401 and the annular disk 10. The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 27 shows a schematic diagram of the relationship between the installation angle α and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the chord length of the bi-circular arc blade 401, and the rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 are all kept unchanged. The chord length of the double-circular arc blade 401 of the present embodiment may be a straight line distance between both end points of the inner arc 41 or the back arc 42.

When the above-mentioned parameters are kept unchanged, for example, 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 layers of the annular disk 10 is 8, the pitch of the annular disk 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the chord length of the bi-circular arc blade 401 is 35 mm, and the rotation speed of the laminar motor 20 is 1000rpm (revolutions per minute ), where the installation angle α of the bi-circular arc blade 401 can be set to-5 ° to 55 ° in consideration of the air volume and the air pressure. The mounting angle α is a positive number when the chord line 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 line 51 are sequentially arranged in the rotation direction of the annular disk 10; the attachment angle α is negative when the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 and the chord line 51 between the two end points of the inner arc 41 are sequentially arranged in the direction in which the annular disk 10 rotates.

Fig. 28 is a schematic cross-sectional view of the laminar flow fan 100 with the air blades 402, and fig. 29 is a schematic view of the mounting angle α of the air blades 402 of the laminar flow fan 100 of fig. 28 as a function of air volume and wind pressure. In a particular embodiment, the attachment tab 40 may also be an aerovane 402. The cross section of the aviation blade 402 has a double circular arc protruding toward the direction in which the annular disk 10 rotates, and the double circular arc includes an inner arc 41 and a back arc 42 which are sequentially provided along the direction in which the annular disk 10 rotates, the inner arc 41 and the back arc 42 having different circle centers and both ends intersecting. Fig. 28 is a schematic cross-sectional view of the laminar flow fan 100 in a plan view, in which the laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the back arc 42 and the inner arc 41 protrude in a direction consistent with the direction in which the annular disk 10 rotates. In other embodiments, the laminar motor 20 may also drive the annular disk 10 to rotate counter-clockwise, where the back and

inner arcs

42, 41 may be raised in a direction opposite to that shown in FIG. 28.

The mounting angle α of the aerovane 402 in fig. 29 actually refers to: the chord line 51 between the ends of the inner arc 41 or the back arc 42 forms an angle with the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51, in the same cross section of the aviation blade 402 and the annular disk 10. The abscissa axis Metal angle (α) in fig. 29 refers to the mounting angle of the aero blade 402 of the laminar fan 100, that is, the angle formed by the chord line 51 between the two ends of the inner arc 41 or the back arc 42 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51, on the same cross section of the aero blade 402 and the annular disk 10. The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 29 shows a schematic diagram of the relationship between the installation angle α and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the 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 are all kept unchanged. The chord length of the aerovane 402 of this embodiment may be the linear distance between the two end points of the inner arc 41 or the back arc 42, i.e. the length of the chord line 51.

When the above-mentioned parameters are all kept unchanged, for example, 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 layers of the annular disk 10 is 8, the pitch of the annular disk 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the chord length of the aviation blade 402 is 35 mm, and the rotation speed of the laminar motor 20 is 1000rpm (revolutions per minute ), where the installation angle α of the aviation blade 402 can be set to-50 ° to 15 ° in consideration of the comprehensive air volume and air pressure.

Fig. 30 is a schematic diagram illustrating a connection between the laminar fan 100 and the laminar motor 20, which are the multiple annular disks 10 with gradually-varied pitches, fig. 31 is a schematic diagram illustrating a connection between the laminar fan 100 and the laminar motor 20, which are another view angle of fig. 30, and fig. 32 is a schematic diagram illustrating a relationship between the multiple annular disks 10 with gradually-varied pitches of the laminar fan 100, which are the wind volume and the wind pressure, which are the multiple annular disks 10 with gradually-varied pitches of fig. 30.

As shown in fig. 30 and 31, the connection piece of the laminar flow fan 100 may also be a connection rod 60. The connecting rods 60 may also be provided in a plurality of numbers and penetrate through the driving disc 30 and the plurality of annular discs 10 at even intervals, so as to ensure that the connection relationship between the driving disc 30 and the plurality of annular discs 10 is stable, and further ensure that the driving disc 30 can stably drive the plurality of annular discs 10 to rotate when the laminar flow motor 20 drives the driving disc 30 to rotate, thereby improving the working reliability of the laminar flow fan 100. As the distance between two adjacent annular disks 10 increases gradually from one side far 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 outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the amount of change in the spacing between adjacent two annular disks 10 is the same, that is, the spacing between adjacent two annular disks 10 increases from one side away from the drive disk 30 to the other.

In fig. 32, the abscissa axis shrinking uniform expanding Plate distance increase refers to the amount of change in the interval between two adjacent annular disks 10 in the direction from one side to the other side away from the drive disk 30, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the air Pressure. Also, the amount of change in the spacing between adjacent two annular disks 10 is the same, that is, the amount by which the spacing between adjacent two annular disks 10 increases or decreases is the same.

Specifically, fig. 32 shows a schematic diagram of the relationship between the pitch gradation of the plurality of annular disks 10 and the air volume and air pressure when the outer diameter, inner diameter, number, thickness of the annular disks 10 of the laminar flow fan 100 and the rotation speed of the laminar flow motor 20 are all kept constant. As shown in fig. 32, when the above-mentioned parameters are kept unchanged, the distance between each two adjacent annular disks 10 of the plurality of annular disks 10 gradually changes from one side away from the driving disk 30 to the other side, which has a large influence on the air volume and a small influence on the air pressure. When the amount of change in the interval between two adjacent annular disks 10 in the direction from one side to the other side away from the drive disk 30, which is indicated by the axis of abscissa, is a positive number, it is explained that the interval between each two adjacent annular disks 10 of the plurality of annular disks 10 gradually increases from one side to the other side away from the drive disk 30; when the amount of change in the interval between two adjacent annular disks 10 in the direction from one side to the other side away from the drive disk 30, which is indicated by the axis of abscissa, is negative, it is explained that the interval between each two adjacent annular disks 10 of the plurality of annular disks 10 gradually decreases from one side to the other side away from the drive disk 30.

As can be seen from fig. 32, when the amount of change in the interval between each two adjacent annular disks 10 of the plurality of annular disks 10 is-1 mm, and 2 mm, the air volume and air pressure of the laminar flow fan 100 are greatly improved. Considering the air volume and the air pressure of the laminar flow fan 100 in combination, the interval between each two adjacent annular disks 10 of the plurality of annular disks 10 is set to gradually increase from one side away from the driving disk 30 to the other side. In a preferred embodiment, the outer diameter of the annular disc 10 of the laminar flow fan 100 is 175 mm, the inner diameter of the annular disc 10 is 115 mm, the number of the annular discs 10 is 8, the thickness of the annular disc 10 is 2 mm, and the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute ), at this time, considering the overall air volume and air pressure of the laminar flow fan 100, the interval between two adjacent annular discs 10 of the 8 annular discs 10 can be set from one side far from the driving disc 30 to the other side in sequence as follows: 13.75 mm, 14.75 mm, 15.75 mm, 16.75 mm, 17.75 mm, 18.75 mm and 19.75 mm, namely the distance between two adjacent annular discs 10 is sequentially increased by 1 mm from one side far away from the driving disc 30 to the other side. Note that, the distance between two adjacent annular disks 10 among the plurality of annular disks 10 gradually increases from one side away from the drive disk 30 to the other side, which means that the distance between two adjacent annular disks 10 gradually increases along the direction in which the air flow flows in the air intake passage 11.

Fig. 33 is a partial sectional view of the laminar flow fan 100 having the inner diameter of the plurality of annular disks 10, and fig. 34 is a schematic view showing the relationship between the inner diameter of the plurality of annular disks 10 of the laminar flow fan 100 of fig. 33 and the air volume and the air pressure. As the inner diameters of the plurality of annular discs 10 gradually decrease from one side far away from the driving disc 30 to the other side, the air volume of the laminar flow fan 100 is effectively increased, so that the air outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the inner diameters of adjacent two annular disks 10 vary by the same amount, that is, the inner diameters of the plurality of annular disks 10 decrease from one side away from the drive disk 30 to the other side by the same amount.

In fig. 34, the abscissa axis shrinking uniform expanding Inner radius increase refers to the amount of change in the inner diameter of each annular disk 10 and the inner diameter of the annular disk 10 adjacent therebelow, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 34 shows a schematic diagram of the relationship between the inner diameter gradient of the plurality of annular disks 10 and the air volume and the air pressure when the outer diameter, the pitch, the number, the thickness of the annular disks 10 and the rotation speed of the laminar flow motor 20 of the laminar flow fan 100 are all kept unchanged. As shown in fig. 34, when the above-mentioned parameters are kept unchanged, the influence of the gradual change of the inner diameters of the plurality of annular disks 10 from one side away from the driving disk 30 to the other side is large and the influence of the wind pressure is small. When the amount of change in the inner diameter of each annular disk 10, which is represented by the axis of abscissa, and the inner diameter of the annular disk 10 adjacent below is positive, it is explained that the inner diameters of the plurality of annular disks 10 gradually increase from one side away from the drive disk 30 to the other side; when the amount of change in the inner diameter of each annular disk 10, which is represented by the axis of abscissa, and the inner diameter of the annular disk 10 adjacent therebelow is negative, it is illustrated that the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the drive disk 30 to the other side.

As can be seen from fig. 34, when the inner diameters of the plurality of annular disks 10 gradually decrease from one side to the other side away from the driving disk 30, the air volume of the laminar flow fan 100 increases and the air pressure decreases slightly; when the inner diameters of the plurality of annular disks 10 gradually increase from one side to the other side away from the driving disk 30, the wind pressure of the laminar flow fan 100 slightly increases and the wind volume is greatly reduced. Thus, considering the air volume and the air pressure of the laminar flow fan 100 in combination, the inner diameters of the plurality of annular disks 10 are set to be gradually reduced from one side to the other side away from the driving disk 30.

In a preferred embodiment, the outer diameter of the annular disks 10 of the laminar flow fan 100 is 175 mm, the interval 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 1000rpm (revolutions per minute ), and at this time, the variation of the inner diameter of each annular disk 10 from the inner diameter of the annular disk 10 adjacent therebelow can be set to-5 mm in consideration of the overall air volume and air pressure of the laminar flow fan 100. That is, the inner diameters of the 8 annular disks 10 may be sequentially set from one side away from the driving disk 30 to the other side: the inner diameter of each annular disc 10 is reduced by 5mm from the inner diameter of the annular disc 10 adjacent below by 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm, 85 mm and 80 mm. It should be noted that, the pitch of the annular disks 10 in the above description refers to the pitch between two adjacent annular disks 10. It should be emphasized that the inner diameters of the plurality of annular disks 10 gradually decrease from one side to the other side away from the driving disk 30, which means that the inner diameters of the plurality of annular disks 10 gradually decrease in the direction in which the air flows in the air intake passage 11.

Fig. 35 is a schematic view of the central angles of the inner and outer diameter lines of the plurality of annular disks 10 of the laminar fan 100 in which the annular disks 10 are arc-shaped disks on the same longitudinal section passing through the central axis, and fig. 36 is a schematic view of the relationship between the central angles and the air volume and air pressure in fig. 35. Each annular disk 10 of the laminar fan 100 in fig. 35 is an arc-shaped disk gradually approaching the driving disk 30 from the center to the edge and protruding toward one side of the driving disk 30. Compared with a plane disc, the arc disc can enable the angle of the external air entering the laminar flow fan 100 to be more consistent with the fluid flow, thereby being more beneficial to the external air entering the laminar flow fan 100 and effectively reducing the air loss. Further, the inner diameters of the plurality of annular disks 10 are gradually reduced from one side away from the drive disk 30 to the other side, and the inner and outer diameter connection lines of the plurality of annular disks 10 on the same longitudinal section passing through the central axis are formed with a central angle θ.

In fig. 36, the axis θ of abscissa indicates the central angle of the inner and outer diameter lines of the plurality of annular disks 10 on the same longitudinal section passing through the central axis, the left axis Mass flow rate indicates the air volume, and the right axis Pressure rate indicates the air Pressure. Specifically, fig. 36 shows a schematic diagram of the relationship between the central angle θ and the air volume and wind pressure when the outer diameter, the number of layers, the pitch, the thickness of the annular disk 10, and the rotational speed of the laminar flow motor 20 of the laminar flow fan 100 are all kept unchanged. As shown in fig. 36, when the above-mentioned parameters are all kept unchanged, the air volume of the laminar flow fan 100 increases and then decreases with a gradual increase in the central angle θ, and the air pressure slightly increases. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar fan 100 is 175 mm, the number of layers of the annular disk 10 is 10, the pitch of the annular disk 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the rotational speed of the laminar motor 20 is 1000rpm (revolutions per minute ), and the central angle θ of the inner and outer diameter lines of the plurality of annular disks 10 on the same longitudinal section passing through the central axis may be set to 9 ° to 30 ° in consideration of the total air volume and air pressure. And as shown in fig. 36, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 100 reaches the maximum value.

The indoor unit 300 of the vertical air conditioner of the present embodiment includes: a housing 310 having a cavity defined therein, an air outlet 320 formed in an upper portion of the housing 310, and an air inlet 330 formed in a middle portion thereof; a laminar flow fan 110 disposed inside the cavity and configured to form laminar flow wind using a viscous effect and blow out the laminar flow wind from the air outlet 320; and an axial flow fan 400 disposed below the laminar flow fan 110 and configured to blow air in the lower portion of the cavity toward the laminar flow fan 110. The vertical air conditioner indoor unit 300 is provided with the laminar flow fan 110, laminar flow air supply is realized through the viscous effect, noise in the air supply process is low, air quantity is high, and the use experience of a user is effectively improved. The axial flow fan 400 can effectively improve the air quantity entering the laminar flow fan 110, thereby improving the working efficiency of the laminar flow fan 110.

Further, in the indoor unit 300 of the vertical air conditioner of the present embodiment, the casing 310 is provided with the air outlet 320 around the laminar flow fan 100 at the upper part thereof; or the floor air conditioner indoor unit 300 may further include: a wind shielding piece 371 which is arranged outside the laminar flow fan 100 and is provided with a notch 373; the casing 310 is provided with the air outlet 320 at a position corresponding to the notch 373, so that 360-degree four-sided air supply or three-sided air supply, two-sided air supply and single-sided air supply of the indoor unit of the vertical air conditioner can be realized. Laminar flow fan 100 further includes: a driving disk 30 disposed at one side of the plurality of annular disks 10 in parallel at intervals; and a connection member penetrating the driving disk 30 and the plurality of annular disks 10 to connect the plurality of annular disks 10 to the driving disk 30, the laminar flow motor 20 being further configured to: the driving disc 30 is directly driven to rotate, and the driving disc 30 drives the plurality of annular discs 10 to rotate. The laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340, wherein a perforation 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 perforation 352 and is fixed with 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 is improved.

Further, in the indoor unit 300 of the vertical air conditioner of the present embodiment, the plurality of annular disks 10 of the laminar flow fan 100 may be arranged according to one or more of the following structures: the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the drive disk 30 to the other side; the interval between two adjacent annular disks 10 among the plurality of annular disks 10 gradually increases from one side away from the drive disk 30 to the other side; each of the annular disks 10 is an arc-shaped disk gradually approaching the driving disk 30 from the center to the edge and protruding toward one side of the driving disk 30. The above-mentioned form of setting up a plurality of annular discs 10 can all effectively promote the amount of wind of laminar flow fan 100 for the air-out of laminar flow fan 100 satisfies user's user demand. In addition, the connecting piece may be a connecting piece 40, and the cross section of the connecting piece 40 has two curves sequentially arranged along the rotation direction of the annular disc 10, and the chord length of the two curves is in a linear relation with the air volume generated by the laminar flow fan 100. The connection piece 40 is arranged to effectively raise the wind pressure of the laminar flow fan 100, so that after the laminar flow wind is blown out through the gaps between the annular discs 10, the air outside the laminar flow fan 100 is pressed into the annular discs 10 through the air inlet channel 11 due to the pressure difference effect, and the circulation is performed in such a way that the laminar flow air circulates. The plurality of air outlets 12 formed by the gaps between the plurality of annular discs 10 can enable the laminar flow fan 100 to realize 360-degree air supply, avoid various uncomfortable symptoms caused by direct air supply of the air conditioner, and further improve the use experience of the user.

It should be understood by those skilled in the art that, unless specifically stated otherwise, terms such as "upper", "lower", "left", "right", "front", "rear", etc. used to indicate the azimuth or positional relationship in the embodiments of the present invention are based on the actual use state of the indoor unit 300 of the stand air conditioner, and these terms are merely for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the referred device or component must have a specific azimuth, and therefore should not be construed as limiting the present invention.

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

Claims

1. An indoor unit of a floor air conditioner, comprising:

the shell is internally limited with a cavity, the upper part of the shell is provided with an air outlet, and the middle part of the shell is provided with an air inlet;

The laminar flow fan is arranged in the cavity and is configured to form laminar flow wind by utilizing a viscous effect and blow the laminar flow wind out of the air outlet; and

an axial flow fan arranged below the laminar flow fan and configured to blow air at the lower part of the cavity to the laminar flow fan,

the laminar flow fan comprises: laminar flow fan, set up in correspond the air outlet the cavity is inside, laminar flow fan includes: a plurality of annular disks disposed in parallel at intervals from each other and having the same central axis; the driving discs are arranged on one sides of the plurality of annular discs at intervals in parallel; and a connection member penetrating the driving disk and the plurality of annular disks to connect the plurality of annular disks to the driving disk,

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

2. The indoor unit of a floor air conditioner according to claim 1, wherein,

an air inlet channel is formed at the centers of the plurality of annular discs, and air in the cavity enters gaps among the plurality of annular discs through the air inlet channel;

The laminar flow fan further comprises: and the laminar flow motor is connected with the laminar flow fan and is configured to drive the plurality of annular discs to rotate so as to enable an air boundary layer close to the surfaces of the plurality of annular discs to rotationally move from inside to outside, thereby forming laminar flow wind to be blown out from the air outlet.

3. The indoor unit of a floor air conditioner according to claim 2, wherein,

the axial flow fan includes: the air conditioner comprises an axial flow fan and an axial flow motor, wherein the axial flow motor drives the axial flow fan to rotate so that air flows along the axial direction of the axial flow fan and upwards enters the air inlet channel.

4. The indoor unit of a floor air conditioner according to claim 3, wherein,

the laminar flow motor is further configured to: the driving disc is directly driven to rotate, and then the driving disc drives the plurality of annular discs to rotate.

5. The floor air conditioner indoor unit of claim 4, further comprising:

one side of the fixed plate is provided with a plurality of reinforcing ribs, and the other side of the fixed plate is provided with a plurality of clamping grooves; and

the fixing frame is provided with a plurality of claws corresponding to the clamping grooves towards one side of the fixing plate, so that the laminar flow motor is fixed between the fixing frame and the fixing plate after the clamping grooves are respectively connected with the clamping grooves in a screwed mode, a through hole is formed in the center of the fixing frame, and an output shaft of the laminar flow motor penetrates through the through hole and then is fixed with the driving disc.

6. The floor air conditioner indoor unit of claim 4, further comprising:

two air-inducing rings, one of which is arranged at one side of the plurality of annular disks far away from the driving disk, the other of which is arranged at the outside of the axial flow fan, and

the induced draft ring is configured to direct air within the cavity into the air intake passage.

7. The indoor unit of a floor air conditioner according to claim 2, wherein,

the shell is provided with the air outlet at the upper part of the shell around the laminar flow fan; or alternatively

The vertical air conditioner indoor unit further comprises: the wind shielding piece is arranged outside the laminar flow fan and is provided with a notch; the shell is provided with the air outlet at the position corresponding to the notch.

8. The indoor unit of a floor air conditioner according to claim 4, wherein,

the center of the driving disc faces the plurality of annular discs to form grooves, and the laminar flow motor is fixedly arranged in the grooves; or alternatively

The surface of the driving disc facing the laminar flow motor is a plane, and the surfaces facing the annular discs are provided with conical protruding parts so as to guide the air flowing into the laminar flow fan and assist in forming the laminar flow wind.

9. The indoor unit of a floor air conditioner according to claim 1, wherein,

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

10. The indoor unit of a floor air conditioner according to claim 1, wherein the plurality of annular disks are arranged in one or more of the following configurations:

the inner diameters of the plurality of annular disks gradually decrease from one side far away from the driving disk to the other side;

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

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