CN111442397A - Indoor machine of floor air conditioner - Google Patents

Abstract

The invention provides an indoor unit of a vertical air conditioner. The indoor unit of the vertical air conditioner includes: a casing, the interior of which defines a cavity, the upper and lower parts of the casing are provided with air outlets, and the middle part is provided with an air inlet; an evaporator is arranged inside the cavity corresponding to the air inlet, and is configured with The air entering the cavity through the air inlet is exchanged in pairs. The evaporator is flat and parallel to the side panel; the laminar flow fan is arranged above the evaporator and is configured to use the viscous effect to make the part passing through the evaporator heat exchange. The air forms a laminar flow wind, so that the laminar flow wind is blown out from the upper air outlet; the double suction centrifugal fan, whose axis is perpendicular to the side panel, is configured to drive part of the air that has passed the heat exchange of the evaporator to be blown out from the lower air outlet. In the vertical air conditioner indoor unit of the present invention, the evaporator and the air inlet are matched to ensure sufficient heat exchange; the upper laminar flow air supply is realized by the laminar flow fan, and the noise during the air supply process is low; the double suction centrifugal fan can effectively improve the outlet of the lower part. Air volume and pressure.

Description

Vertical air conditioner indoor unit

technical field

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

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 life. Various air conditioning devices can help people reach a temperature that they can adapt to when the ambient temperature is too high or too low.

The current air conditioners mainly include various types of air conditioners and fans, but most users believe that the hot air or cold air generated by the current air conditioners is unevenly distributed in a room or a closed space, and has certain distribution limitations. In addition, the fan used in the indoor unit of the air conditioner is mainly a cross-flow fan. However, although the noise of the cross-flow fan is low, 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 achieve 360° air supply, so as to prevent the air from blowing directly to the user, and to improve the user's use experience.

In particular, the present invention provides an indoor unit for a vertical air conditioner, comprising: a casing, the interior of which defines a cavity, the upper and lower parts of the casing are provided with air outlets, the middle part is provided with an air inlet, and the casing includes a front a panel, a rear shell, a top plate and a bottom plate, the rear shell includes a rear panel and two side panels; the evaporator is arranged inside the cavity corresponding to the air inlet, and is configured to exchange heat for the air entering the cavity through the air inlet, wherein The evaporator is flat and parallel to the side panel; the laminar flow fan is arranged above the evaporator and is configured to use the viscous effect to make part of the air passing through the evaporator heat exchange to form a laminar flow wind, and make the laminar flow wind blow out from the upper air outlet ; And a double suction centrifugal fan, which is arranged below the laminar flow fan, its axis is perpendicular to the side panel and is configured to drive part of the air that has passed the heat exchange of the evaporator to be blown out from the lower air outlet.

Optionally, the air inlets are arranged on the two side panels to realize air intake from both sides, and two evaporators are arranged and are respectively close to the two side panels.

Optionally, the indoor unit of the vertical air conditioner further includes: two partitions, respectively disposed in front of and behind the two evaporators, to prevent the air exchanged through the evaporators from flowing to the front and rear of the cavity.

Optionally, the vertical air conditioner indoor unit further includes: a volute, which has two inlets and one outlet, and the outlet is arranged opposite to the lower air outlet; the double suction centrifugal fan is arranged inside the volute, and is further configured to: drive the Part of the air heat exchanged by the evaporator enters the volute from the two inlets, and is discharged from the outlet after turning twice in the volute, and then blown out through the lower air outlet.

Optionally, the laminar flow fan includes: a laminar flow fan, disposed inside the cavity corresponding to the upper air outlet, the laminar flow fan includes: a plurality of annular discs, arranged in parallel with each other and having the same central axis, a plurality of annular discs. 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 with the laminar flow fan, and configured to drive a plurality of annular discs The disk rotates, so that the air boundary layer close to the surfaces of the plurality of annular disks rotates and moves from the inside to the outside, so that laminar air is blown out from the air outlet.

Optionally, the laminar flow fan further comprises: a driving disc, which is arranged parallel to one side of the plurality of annular discs at intervals; Connected to the driving disc, the laminar flow motor is further configured to: directly drive the driving disc to rotate, and then drive the plurality of annular discs to rotate by the driving disc.

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

Optionally, the indoor unit of the vertical air conditioner further comprises: an air induction ring, which is arranged on the side of the plurality of annular discs away from the driving disc, and the air induction ring is configured to guide part of the air heat exchanged by the evaporator into the air intake. aisle.

Optionally, the casing is provided with an air outlet around the laminar flow fan at its upper part; or the indoor unit of the vertical air conditioner further comprises: a wind shield, which is arranged outside the laminar flow fan and has a gap; the casing is corresponding to the gap. The position of the air outlet is set.

Optionally, 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; 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 disc, 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 rotation direction of the annular disc: an inner arc and a back arc, and both the inner arc and the back arc are convex toward the rotation direction of the annular disc, and the inner arc and the back arc are both convex. The back arcs have the same center and are arranged in parallel or have different centers and meet at both ends.

Optionally, the plurality of annular disks are arranged according to one or more of the following structures: the inner diameters of the plurality of annular disks gradually decrease from one side away from the driving disk to the other side; The distance between two adjacent annular discs gradually increases from one side away from the driving disc to the other side; each annular disc gradually approaches the driving disc from the center to the edge and protrudes toward the side of the driving disc curved disc.

The vertical air conditioner indoor unit of the present invention comprises: a casing with a cavity defined inside, air outlets are opened at the upper and lower parts of the casing, and an air inlet is opened in the middle, and the casing includes a front panel, a rear casing, and a top plate. and bottom plate, the rear shell includes a rear panel and two side panels; the evaporator is arranged inside the cavity corresponding to the air inlet, and is configured to exchange heat with the air entering the cavity through the air inlet, wherein the evaporator is a flat plate and Parallel to the side panel; a laminar flow fan, arranged above the evaporator, configured to use the viscous effect to make part of the air passing through the evaporator heat exchange to form a laminar flow wind, and make the laminar flow air blow out from the upper air outlet; and a double suction centrifugal fan It is arranged below the laminar flow fan, its axial direction is perpendicular to the side panel and is configured to drive part of the air that has passed the heat exchange of the evaporator to be blown out from the lower air outlet. The indoor unit of the vertical air conditioner is equipped with a laminar flow fan, 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 double suction centrifugal fan, which can effectively improve the lower part. air volume and air 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 at 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 the position corresponding to the gap, which can realize 360° four-sided air supply or three-sided, two-sided and single-sided air supply of the upper part of the vertical air conditioner indoor unit. The air inlets are arranged on the two side panels to achieve air intake from both sides and increase the air intake volume. There are two evaporators, and they are respectively close to the two side panels. The evaporator is matched with the air inlet, so that the air entering the cavity through the air inlet can exchange heat through the evaporator. The laminar flow fan includes a laminar flow fan and a laminar flow motor, and the laminar flow fan is arranged inside the cavity corresponding to the upper air outlet. The laminar flow motor is fixed between the fixing frame and the fixing plate. The center of the fixing frame is provided with a hole. The output shaft of the laminar flow motor passes through the hole and is fixed with the driving disc of the laminar flow fan, which can effectively enhance the laminar flow fan and laminar flow. The connection firmness of the motor improves the overall working reliability.

Further, in the indoor unit of the vertical air conditioner of the present invention, the plurality of annular discs of the laminar flow fan can be arranged according to one or more of the following structures: It gradually decreases 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 whose edge gradually approaches the driving disc and protrudes toward the side of the driving disc. The above-mentioned forms of setting a plurality of annular disks can effectively increase the air volume of the laminar flow fan, so that the air output of the laminar flow fan can meet the needs of users. In addition, the connecting piece can 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 flow wind blows out through the gaps between the multiple annular discs, due to the pressure difference, the air outside the laminar flow fan is pressed through the air inlet channel Into the annular disc, and so on, so as to form a laminar air circulation. The multiple air outlets formed by the gaps between the multiple annular discs can make the laminar flow fan achieve 360° air supply, avoid various discomfort symptoms caused by the air conditioner blowing the air directly, and further improve the user's use experience.

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

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

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

Fig. 2 is the partial structure schematic diagram of the indoor unit of the vertical air conditioner in Fig. 1;

Fig. 3 is a schematic diagram of a component explosion of the indoor unit of the neutral air conditioner of Fig. 1;

4 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;

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

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

7 is a schematic structural diagram of a laminar flow fan with a groove on the drive disc;

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

Fig. 9 is the structural representation of the laminar flow fan in Fig. 7 from another perspective;

Figure 10 is a sectional view of the laminar flow fan in Figure 7;

Fig. 11 is the connection schematic diagram of the laminar flow fan and the laminar flow motor in Fig. 7;

Figure 12 is a schematic exploded view of the components of the laminar flow motor, the fixing plate and the fixing frame;

13 is a schematic diagram of the connection between a laminar flow fan and a laminar flow motor with a conical convex portion of the drive disc;

FIG. 14 is a schematic structural diagram of the laminar flow fan in FIG. 13 from another perspective;

Figure 15 is a schematic cross-sectional view of the laminar flow fan in Figure 13;

Figure 16 is a schematic diagram of the relationship between the chord length of the connecting piece in Figure 15 and the air volume and wind pressure;

Figure 17 is a schematic diagram of the relationship between the installation angle of the connecting piece and the air volume and wind pressure in Figure 15;

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

Figure 19 is a schematic diagram of the relationship between the installation angle of the aviation blade of the laminar flow fan in Figure 18 and the air volume and wind pressure;

Figure 20 is a schematic diagram of the connection between a plurality of laminar flow fans and laminar flow motors with gradual spacing between annular discs;

Figure 21 is a schematic diagram of the connection of the laminar flow fan and the laminar flow motor from another perspective in Figure 20;

Figure 22 is a schematic diagram of the relationship between a plurality of annular disc pitch gradients and air volume and air pressure of the laminar flow fan in Figure 20;

23 is a partial cross-sectional view of a laminar flow fan with a tapered inner diameter of a plurality of annular discs;

Figure 24 is a schematic diagram of the relationship between the inner diameter gradient of a plurality of annular discs of the laminar flow fan in Figure 23 and the air volume and air pressure;

25 is a schematic diagram of the central angle of a line connecting the inner and outer diameters of a plurality of annular disks of a laminar flow fan whose annular disk is an arc-shaped disk on the same longitudinal section passing through the central axis; and

FIG. 26 is a schematic diagram showing the relationship between the central angle and the air volume and air pressure in FIG. 25 .

Detailed ways

This embodiment provides an indoor unit of a vertical air conditioner, which is provided with a laminar flow fan, and realizes the upper laminar flow air supply through the viscous effect. The air supply process has low noise, high air volume and large air pressure, and effectively improves the user experience; It is also equipped with a double suction centrifugal fan, which can effectively increase the air outlet volume and air pressure at the lower part. 1 is a schematic diagram of the overall structure of the indoor unit 300 of a vertical air conditioner according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a partial structure of the indoor unit 300 of the vertical air conditioner in FIG. 1 , and FIG. 3 is a schematic diagram of the vertical air conditioner in FIG. 1 An exploded schematic diagram of the components of the indoor unit 300 . 4 is a schematic diagram of the air circulation of the laminar flow fan 100 in the indoor unit 300 of the vertical air conditioner according to an embodiment of the present invention, and FIG. 5 is the air supply of the laminar flow fan 100 in the indoor unit 300 of the vertical air conditioner according to an embodiment of the present invention A schematic diagram of the principle, FIG. 6 is a speed distribution and force distribution diagram of the laminar flow fan 100 in the indoor unit 300 of a vertical air conditioner according to an embodiment of the present invention. FIG. 7 is a schematic structural diagram of the laminar flow fan 100 having the grooves 32 on the driving disc 30 , FIG. 8 is a structural schematic diagram of the laminar flow fan 100 in FIG. 7 from another perspective, and FIG. 9 is another perspective of the laminar flow fan 100 in FIG. 7 . FIG. 10 is a cross-sectional view of the laminar flow fan 100 in FIG. 7 . As shown in FIGS. 1 to 6 , the vertical air conditioner indoor unit 300 may generally include: a casing 310 , an evaporator 382 , a laminar flow fan 110 and a double suction centrifugal fan 610 .

The interior of the housing 310 defines a cavity, and the upper and lower parts of the housing 310 are provided with air outlets 320 , and the middle part 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 , and the rear case 312 includes a rear panel 315 and two side panels 316 . In a specific embodiment, the air inlets 330 may be disposed on the two side panels 316 to achieve air intake from both sides. The air inlet 330 of the housing 310 may be provided in the form of an air inlet grill, which can draw indoor air into the cavity through different directions and filter the air. An air guide plate 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 evaporator 382 may be disposed inside the cavity corresponding to the air inlet 330 and configured to perform heat exchange for the air entering the cavity through the air inlet 330 . The evaporator 382 in this embodiment is flat and parallel to the side panel 316 . In a specific embodiment, two evaporators 382 may be provided, and they are respectively close to the two side panels 316 . The vertical air conditioner indoor unit 300 may further include: two partitions 383 respectively disposed in front of and behind the two evaporators 382 to prevent the air heat exchanged by the evaporators 382 from flowing to the front and rear of the cavity. The separator 383 in this embodiment may be in the shape of a flat plate. A water receiving tray 390 may also be provided below the evaporator 382 to receive the condensed water generated by the evaporator 382 .

The laminar flow fan 110 is disposed above the evaporator 382 , and is configured to use the viscous effect to form a laminar flow of the air passing through the evaporator 382 for heat exchange, and to blow the laminar flow out from the upper air outlet 320 . When two evaporators 382 are provided, the laminar flow fan 110 is provided above the two evaporators 382 as a whole. The laminar flow fan 110 includes a laminar flow fan 100 and a laminar flow motor 20 . The laminar flow fan 100 is disposed inside the cavity corresponding to the upper air outlet 320 , and 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 together, and the air in the cavity enters the gaps 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 discs 10 to rotate, so that the air boundary layer 13 close to the surfaces of the plurality of annular discs 10 is rotated and moved from the inside to the outside, thereby forming a laminar flow wind by The air outlet 320 blows out.

The double suction centrifugal fan 610 may be disposed below the laminar flow fan 110 , its axial direction is perpendicular to the side panel 316 and is configured to drive part of the air that has passed heat exchange through the evaporator 382 to be blown out from the lower air outlet 320 . The indoor unit 300 of the vertical air conditioner may further include: a volute 520, which has 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 double-suction centrifugal fan 610 is arranged in the volute Inside 520, it is also configured to drive part of the air heat exchanged by the evaporator 382 into the volute 520 from the inlet, and is discharged from the outlet 521 after turning twice in the volute 520, and then blown out through the lower air outlet 320. It should be noted that the inlet of the volute 520 is disposed on the side facing the rear panel 315, so it is not shown in the figure. All in all, the double-suction centrifugal fan 610 enters the air axially and exits the air radially. The air enters the double-suction centrifugal fan 610 in the axial direction and leaves the double-suction centrifugal fan 610 radially and turns once, and then discharges from the outlet 521 and turns again.

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 may also be provided inside the cavity, and the lower part of the volute 520 can be placed on the shelf 530 stably after passing through the water receiving tray 390 .

Specifically, the laminar flow motor 20 drives the plurality of annular discs to rotate, so that the plurality of annular discs are in contact with the air between them and move with each other, so that the air boundary layer 13 close to the surfaces of the plurality of annular discs is caused by the viscous effect. The multiple annular discs that are rotated are driven to rotate and move from the inside to the outside to form a laminar airflow. A plurality of air outlets 12 are formed in the gaps between the plurality of annular discs, each air outlet 12 can achieve 360° air supply, and the laminar flow 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 realize four-side air supply, three-side air supply, two-side air supply or single-side air supply respectively.

For example, 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 indoor unit 300 of the vertical air conditioner may further include: a wind shield 371 disposed outside the laminar flow fan 100 and having a notch 373 ; It should be noted that the notch 373 is located outside the peripheral portion of the laminar flow fan 100 , so that the laminar flow wind formed by the laminar flow fan 100 is blown out. According to the size of the notch 373 and the setting of the corresponding air outlet 320 , the upper part can be supplied with air from three sides, from two sides, or from three sides.

As shown in FIG. 4 , the laminar flow fan 100 may further include: a driving disc 30 and a connecting piece. The driving disks 30 are arranged parallel to one side of the plurality of annular disks 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. 7 , the connecting member may be a connecting piece 40 . The laminar flow motor 20 can also be configured to directly drive the driving disk 30 to rotate, and then the driving disk 30 drives the plurality of annular disks 10 to rotate. That is to say, the laminar flow motor 20 mentioned above is configured to drive the plurality of annular discs 10 to rotate, depending on the laminar flow motor 20 first driving the driving disc 30 to rotate, and then the driving disc 30 drives the plurality of annular discs. 10 spins. In a specific embodiment, the radius of the driving disc 30 is the same as the outer diameter of the plurality of annular discs 10 , and both can be set within a certain range, for example, 170 mm to 180 mm, so that the lateral direction of the laminar flow fan 100 is reduced. The occupied volume is constrained, and the longitudinal thickness of the laminar flow fan 100 is constrained in conjunction with limiting the number of annular discs 10 and the distance between two adjacent annular discs 10 , which can effectively constrain the overall occupied volume of the laminar flow fan 100 . It should be noted that the inner diameter of the annular disk 10 refers to the radius of its inner circumference; the outer diameter refers to the radius of its outer circumference. The above-mentioned specific numerical values of the outer diameter of the annular disk 10 are merely examples, and do not limit the present invention.

The indoor unit 300 of the vertical air conditioner may further include an air induction ring 360 disposed on one side of the plurality of annular discs 10 away from the driving disc 30 . And, the air induction ring 360 is configured to guide part of the air heat-exchanged through the evaporator into the air intake passage 11 . The air entering the cavity through the air inlet 330 first exchanges heat through the evaporator, and a part of the heat-exchanged air is guided into the air inlet passage 11 of the laminar flow fan 100 through the air induction ring 360; shell 520 and discharged from outlet 521.

A specific embodiment of the indoor unit 300 of a vertical air conditioner is described below:

As shown in FIGS. 1 to 3 , the indoor unit 300 of the vertical air conditioner in this embodiment is provided with two vertically placed evaporators 382 , and the evaporators 382 are flat and parallel to the side panels 316 . The air inlets 330 are disposed on the two side panels 316 of the rear case 312 , ie, the air intakes from both sides. That is to say, the two evaporators 382 are disposed corresponding to the air inlets 330 , and the air entering the cavity from the air inlets 330 can pass through the two evaporators 382 for heat exchange. The front and rear of the two evaporators 382 are respectively provided with partitions 383 to prevent the air after heat exchange from flowing to the front and rear of the cavity. The partitions 383 in this 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 induction ring 360 , and then enters between the more than one annular disks of the laminar flow fan 100 . Part of the heat-exchanged air enters the volute 520 from the inlet of the double suction centrifugal fan 610, and is discharged from the outlet 521 after turning twice in the volute 520, and then blown out through the lower air outlet 320. 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 part of the casing 310 . Specifically, the upper part of the front panel 311, the rear panel 315 of the rear shell 312, and the two side panels 316 of the indoor unit 300 of the vertical air conditioner in this embodiment is provided with an air outlet 320, and the laminar flow air formed by the laminar flow fan 100 flows from the upper part. The air outlet 320 blows out, which can realize 360° air supply in 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 indoor unit 300 of the vertical air conditioner may also be provided with a wind shield, which is provided outside the laminar flow fan 100 and may be in the shape of a flat plate or a shell. However, no matter what shape the windshield is set to, the notch is set corresponding to the air outlet 320 . For example, the windshield can make the laminar flow formed by the laminar flow fan 100 discharge from three sides, then there are three corresponding air outlets 320 there; There is one air outlet 320 correspondingly. The wind shield can ensure that the laminar flow formed by the laminar flow fan 100 will not be blown to other places in the cavity except for blowing out through the air outlet 320, so as to avoid affecting the normal operation of other components in the cavity.

As shown in FIG. 4 , an air inlet channel 11 is formed in the centers of the plurality of annular disks 10 , so as to allow the 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 flow air to be blown out. The process that the air boundary layer 13 rotates from the inside to the outside to form laminar air is centrifugal motion, so the speed when it leaves the air outlet 12 is greater than the speed when it enters 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 the wind pressure. The plurality of air outlets 12 formed by the gaps between the plurality of annular discs 10 can make the laminar flow fan 100 achieve 360° uniform air supply, and avoid excessive air supply caused by the direct blowing of the indoor unit 300 of the vertical air conditioner. This kind of discomfort symptoms can further improve the user experience.

The air supply principle of the laminar flow fan 100 is mainly derived from the "Tesla turbine" discovered by Nikola Tesla. The Tesla turbine mainly uses the "laminar boundary layer effect" or "viscous effect" of the fluid to achieve the purpose of doing work on the "turbine disc". The laminar flow fan 100 of this embodiment drives the driving disc 30 through the laminar flow motor 20, and the driving disc 30 drives the plurality of annular discs 10 to rotate at a high speed. Due to the action of 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 and move from the inside to the outside to form a laminar airflow.

FIG. 6 shows a schematic diagram of the viscous shear force distribution τ(y) and the velocity distribution u(y) on the air boundary layer 13 . The viscous shear force on the air boundary layer 13 is actually the resistance generated by each annular disk 10 to the air boundary layer 13 . The abscissa axis in FIG. 6 refers to the distance in the moving direction of the air boundary layer 13 , and the ordinate axis refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. _ve 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 at the surface of the annular disk 10 . The variable y in τ(y) and u(y) refers to the height of the cross section of the air boundary layer 13 in the direction perpendicular to the moving direction, and L is a certain point on the inner circumference of the annular disk 10 and a certain point on the surface of the annular disk 10. distance between points. Then τ(y) is the viscous shear force distribution at the distance L, when the height of the air boundary layer 13 section is y; u(y) is at the distance L, the height of the air boundary layer 13 section is y speed distribution at time.

The center of the driving disk 30 of the laminar flow fan 100 shown in FIGS. 7 to 10 is formed with a groove 32 toward the center of the plurality of annular disks 10 , and the laminar flow motor 20 is fixedly arranged in the groove 32 . FIG. 11 is a schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 in FIG. 7 , and FIG. 12 is an exploded schematic diagram of the components of the laminar flow motor 20 , the fixing plate 340 and the fixing frame 350 . As shown in FIGS. 11 and 12 , the indoor unit 300 of the vertical air conditioner 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 grooves 342 . The reinforcing rib 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 screwed into the plurality of clamping grooves 342 respectively. 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. 7 to 10 , since the center of the driving disc 30 is formed with a groove 32 toward the plurality of annular discs 10 , the output shaft 21 of the laminar flow motor 20 is fixedly arranged after passing through the through hole 352 in the groove 32 of the drive disc 30 .

13 is a schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 in which the drive disc 30 has a conical protrusion 31 , FIG. 14 is a schematic structural diagram of the laminar flow fan 100 in FIG. 13 from another perspective, and FIG. 15 is a schematic diagram of FIG. 13 A schematic cross-sectional view of the middle laminar flow fan 100 . In the laminar flow fan 100 in FIGS. 13 to 15 , the surface of the driving disk 30 facing the laminar flow motor 20 is flat, and the surface facing the plurality of annular disks 10 has conical protrusions 31 to guide the laminar flow fan. 100° of air flow and assist in the formation of laminar winds.

The main function of the driving disc 30 is to fix the laminar flow motor 20 and connect 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 . For the laminar flow fan shown in FIGS. 13 to 15 , since the surface of the driving disc 30 facing the laminar flow motor 20 is flat, the output shaft 21 of the laminar flow motor 20 is fixedly arranged on the surface of the driving disc 30 after passing through the through hole 352 . plane side. The driving disk 30 of the laminar flow fan 100 shown in FIG. 13 to FIG. 15 has conical protrusions 31 on the surface facing the plurality of annular disks 10 , which can effectively guide the air entering the laminar flow fan 100 through the air inlet channel 11 . The air enters the gaps between the annular disks 10, thereby improving the efficiency of forming laminar airflow.

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 rotation direction of the annular disk 10 . The air volume produced is linear. The connecting pieces 40 may be provided in multiples and penetrate the driving disk 30 and the plurality of annular disks 10 at even intervals. The plurality of connecting pieces 40 are evenly spaced through the driving disc 30 and the plurality of annular discs 10, which can ensure a stable connection relationship between the driving disc 30 and the plurality of annular discs 10, thereby ensuring that the laminar flow motor 20 drives the driving disc When the 30 rotates, the driving disk 30 can stably drive the plurality of annular disks 10 to rotate, thereby improving the working reliability of the laminar flow fan 100 .

It should be noted that the two curves 41 and 42 may be arcs, non-circular arcs, straight lines, etc. The straight line may be used as a special curve. When the distance between the two end points of the curve 41 is the same as the distance between the two end points of the curve 42 , the length of the chord line 51 may be the distance between the two end points 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 midpoints of the curves other than 42; if only one end of the curve 41 and the curve 42 intersect, the length of the chord line 51 can be the midpoint of the cross section of the connecting piece 40 except for the curves 41 and 42 and the intersecting endpoint the length of the connection.

As shown in FIG. 15 , the connecting piece 40 can be a double-arc blade 401 , and its cross section has double arcs arranged in sequence along the rotation direction of the annular disc 10 : the inner arc 41 and the back arc 42 , and the inner arc 41 and the back The arcs 42 are all convex toward the rotation direction of the annular disk 10 , have the same center and are arranged in parallel. FIG. 15 actually shows a schematic cross-sectional view of the laminar flow fan 100 from a top view. The laminar flow motor 20 drives the annular disc 10 to rotate clockwise, and the convex directions of the back arc 42 and the inner arc 41 are in the same direction as the annular disc 10 rotates. the same direction. In some other embodiments, the laminar flow motor 20 can also drive the annular disk 10 to rotate counterclockwise, and the convex directions of the back arc 42 and the inner arc 41 at this time can be opposite to those shown in FIG. 15 .

FIG. 16 is a schematic diagram showing the relationship between the length of the string 51 of the connecting piece 40 in FIG. 15 and the air volume and air pressure. Since the connecting piece 40 of the laminar flow fan 100 in FIG. 15 is a double arc blade 401, the distance between the two ends of the inner arc 41 is the same as the distance between the two ends of the back arc 42, and the length of the chord line 51 can be the inner arc 41 or the back arc 42. The distance between the two ends of arc 42. 16, the abscissa axis Bladechord refers to the length of the chord line 51 of the connecting 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 rise refers to the wind pressure. Specifically, FIG. 16 shows that when the outer diameter, inner diameter, number of layers, spacing, thickness, installation angle of the connecting piece 40 and the rotational speed of the laminar flow motor 20 of the annular disc 10 of the laminar flow fan 100 remain unchanged, A schematic diagram of the relationship between the length of the string 51 and the air volume and air 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 middle point 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 175 mm, the inner diameter of the annular disc 10 is 115 mm, and the annular disc 10 has an inner diameter of 115 mm. The number of layers of 10 is 8, 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 rotational speed of the laminar flow motor 20 is 1000rpm (revolutions per minute). , rev/min), it can be found that after increasing the length of the string 51, both the air volume and the air pressure are greatly improved, and are basically linear. Considering the limited internal space of the indoor unit 300 of the vertical air conditioner, certain constraints need to be imposed on the overall occupied volume of the laminar flow fan 100 . When the outer diameter and inner diameter of the annular disc 10 are constant, although the longer the chord line 51 is, the greater the air volume and air pressure of the laminar flow fan 100 are, but the length of the chord line 51 should also be constrained to a certain extent to avoid connecting the sheet 10 Excessive penetration of the annular disk 10 results in a decrease in the stability of the laminar flow fan 100 . All in all, the length of the string 51 can be set to the maximum range that can be achieved, so that the air volume and air pressure of the laminar flow fan 100 can meet the needs of the user.

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 a maximum range of 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 needs of users. At this time, the difference between the outer diameter and the inner diameter of the annular disc 10 is 60 mm, and the length of the chord line 51 is set to 42 mm, 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 9 mm respectively. The distance of about mm, on the premise of ensuring the stability of the laminar flow fan 100, the length of the string 51 is set to the maximum range that can be achieved, so that the air volume and air pressure of the laminar flow fan 100 can meet the user's needs.

FIG. 17 is a schematic diagram showing the relationship between the installation angle α of the connecting piece 40 in FIG. 15 and the air volume and air pressure. Since the connecting piece 40 of the laminar flow fan 100 in FIG. 15 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 inner The angle formed by the chord line 51 between the two ends of the arc 41 and the outer diameter 52 of the annular disk 10 passing through the middle point of the chord line 51 . The abscissa axis Metal angle (α) in FIG. 17 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 disc 10 , the inner arc 41 has two The angle formed by the chord line 51 between the end points and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 . The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the wind pressure. Specifically, FIG. 17 shows that the outer diameter, inner diameter, number of layers, spacing, thickness, chord length of the double-arc blades 401 , and the rotational speed of the laminar flow motor 20 of the annular disc 10 of the laminar flow fan 100 remain unchanged. Schematic diagram of the relationship between the installation angle α and the air volume and air pressure. The chord length of the double arc blade 401 in this embodiment may be the straight line 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 175 mm, the inner diameter of the annular disc 10 is 115 mm, and the annular disc 10 has an inner diameter of 115 mm. The number of layers of 10 is 8, the spacing of the annular disc 10 is 13.75 mm, the thickness of the annular disc 10 is 2 mm, the chord length of the double arc blade 401 is 35 mm, and the rotational speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute, revolutions per minute), at this time, considering the air volume and air pressure, the installation angle α of the double arc blade 401 can be set to -5° to 55°. It should be noted that, 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 middle point of the chord line 51 in the rotation direction of the annular disc 10, the installation angle α is A positive number; the installation angle α is a negative number when the outer diameter 52 of the annular disc 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 rotation direction of the annular disc 10 are in turn.

18 is a schematic cross-sectional view of the laminar flow fan 100 with aviation blades 402 , and FIG. 19 is a schematic diagram showing the relationship between the installation angle α of the aviation blades 402 of the laminar flow fan 100 in FIG. 18 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 arc that is convex toward the direction of rotation of the annular disc 10 , and the double arc includes an inner arc 41 and a back arc 42 arranged in sequence along the rotation direction of the annular disc 10 . The back arcs 42 have different centers and both ends meet. FIG. 18 actually shows a schematic cross-sectional view of the laminar flow fan 100 from a top view. The laminar flow motor 20 drives the annular disk 10 to rotate clockwise, and the convex directions of the back arc 42 and the inner arc 41 are in line with the rotation of the annular disk 10 . the same direction. In some other embodiments, the laminar flow motor 20 can also drive the annular disk 10 to rotate counterclockwise, and the convex directions of the back arc 42 and the inner arc 41 at this time can be opposite to those shown in FIG. 18 .

The installation angle α of the aviation blade 402 in FIG. 19 actually refers to: on the same cross section of the aviation blade 402 and the annular disk 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 disk 10 at the midpoint of the line 51. The abscissa axis Metal angle (α) in FIG. 19 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 disk 10, the inner arc 41 or the back arc 42 is two The angle formed by the chord line 51 between the end points and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 . The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the wind pressure. Specifically, FIG. 19 shows that when the outer diameter, inner diameter, number of layers, spacing, thickness, chord length of the aviation blade 402, and rotational speed of the laminar flow motor 20 of the annular disc 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 straight line 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 175 mm, the inner diameter of the annular disc 10 is 115 mm, and the annular disc 10 has an inner diameter of 115 mm. The number of layers of 10 is 8, the spacing of the annular disc 10 is 13.75 mm, the thickness of the annular disc 10 is 2 mm, the chord length of the aviation blade 402 is 35 mm, and the rotational speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute). , rev/min), at this time, considering the comprehensive air volume and wind pressure, the installation angle α of the aviation blade 402 can be set to -50° to 15°.

FIG. 20 is a schematic diagram of the connection between the laminar flow fan 100 and the laminar flow motor 20 in which the pitch of the plurality of annular discs 10 is gradually changed, and FIG. 21 is a schematic diagram of the connection of the laminar flow fan 100 and the laminar flow motor 20 from another perspective in FIG. 20 ,

FIG. 22 is a schematic diagram showing the relationship between the gradual change of the pitch of the plurality of annular disks 10 of the laminar flow fan 100 in FIG. 20 and the air volume and air pressure.

As shown in FIGS. 20 and 21 , 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 through the driving disc 30 and the plurality of annular discs 10 at even intervals, so as to ensure a stable connection between the driving disc 30 and the plurality of annular discs 10, thereby ensuring the laminar flow. When the motor 20 drives the driving disc 30 to rotate, the driving disc 30 can stably drive the plurality of annular discs 10 to rotate, thereby improving the working reliability of the laminar flow fan 100 . As the distance between two adjacent annular disks 10 gradually increases from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 will be effectively increased, so that the air output of the laminar flow fan 100 satisfies the user needs. In a preferred embodiment, the variation of the distance between two adjacent annular discs 10 is the same, that is, the distance between two adjacent annular discs 10 is determined by the side away from the driving disc 30 . The same value increases to the other side.

The shrinking uniform expanding Plate distance increase on the abscissa axis in FIG. 22 refers to the amount of change in the distance between two adjacent annular disks 10 along the direction from one side away from the driving disk 30 to the other side. The coordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the wind pressure. In addition, the variation of the distance between two adjacent annular discs 10 is the same, that is, the increase or decrease of the distance between the adjacent two annular discs 10 is the same.

Specifically, FIG. 22 shows that when the outer diameter, inner diameter, number, thickness, and rotational speed of the laminar flow motor 20 of the annular discs 10 of the laminar flow fan 100 remain unchanged, the spacing of the plurality of annular discs 10 gradually changes and the air volume Schematic diagram of the relationship between wind pressure. As shown in FIG. 22 , when the above-mentioned parameters are kept unchanged, the distance between each two adjacent annular discs 10 in the plurality of annular discs 10 ranges from the side away from the driving disc 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 discs 10 along the direction from one side away from the drive disc 30 to the other side represented by the abscissa axis is a positive number, a plurality of annular discs 10 are described. The distance between each two adjacent annular discs 10 increases gradually from one side away from the drive disc 30 to the other side; When the variation of the distance between two adjacent annular discs 10 in the direction of the other side is a negative number, it means that the distance between every two adjacent annular discs 10 in the plurality of annular discs 10 is changed from a distance away from the driving circle. The disk 30 tapers from side to side.

As can be seen from FIG. 22 , when the variation of the distance between each two adjacent annular discs 10 in the plurality of annular discs 10 is -1 mm, 1 mm and 2 mm, the air volume and air pressure of the laminar flow fan 100 are equal to each other. Great improvement. Considering the air volume and air pressure of the laminar flow fan 100 comprehensively, the distance between each two adjacent annular discs 10 in the plurality of annular discs 10 is set to gradually increase from one side away from the driving disc 30 to the other side. big. 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 annular discs 10 is 8, and the thickness of the annular disc 10 is 2 mm, the rotational speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute, revolutions per minute). At this time, considering the overall consideration of the air volume and air pressure of the laminar flow fan 100, two adjacent two of the eight annular discs 10 can be set. The spacing between the annular discs 10 can be set in sequence from one side away from the driving disc 30 to the other side: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75mm, that is, adjacent The distance between the two annular disks 10 increases by 1 mm from one side away from the driving disk 30 to the other side. It should be noted that the distance between two adjacent annular discs 10 in the plurality of annular discs 10 gradually increases from one side away from the driving disc 30 to the other side, which actually means that the distance between the two annular discs 10 increases along the air flow. In the direction of flow in the air channel 11 , the distance between two adjacent annular disks 10 gradually increases.

23 is a partial cross-sectional view of the laminar flow fan 100 with the inner diameters of the plurality of annular discs 10 gradually changing, and FIG. 24 is a schematic diagram showing the relationship between the inner diameters of the plurality of annular discs 10 of the laminar flow fan 100 shown in FIG. 23 and the air volume and air 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 can be effectively increased, so that the air output of the laminar flow fan 100 can meet the needs of users. In a preferred embodiment, the inner diameters of two adjacent annular disks 10 vary by the same amount, that is, the inner diameters of the plurality of annular disks 10 decrease from one side away from the driving disk 30 to the other side. The values are the same.

In FIG. 24 , the shrinking uniform expanding Inner radius increase on the abscissa axis refers to the change between the inner diameter of each annular disk 10 and the inner diameter of the adjacent annular disk 10 below. The left ordinate axis Massflow rate refers to the air volume. The ordinate axis Pressure rise refers to the wind pressure. Specifically, FIG. 24 shows that when the outer diameter, spacing, number, thickness, and rotational speed of the laminar flow motor 20 of the annular discs 10 of the laminar flow fan 100 remain unchanged, the inner diameters of the plurality of annular discs 10 gradually change and the air volume Schematic diagram of the relationship between wind pressure. As shown in FIG. 24 , when the above-mentioned parameters remain unchanged, the inner diameters of the plurality of annular discs 10 gradually change from one side away from the driving disc 30 to the other side, which has a greater impact on the air volume, and has a greater impact on the air volume. pressure has little effect. When the variation between the inner diameter of each annular disk 10 represented by the abscissa axis and the inner diameter of the adjacent annular disk 10 below is a positive number, it means that the inner diameters of the plurality of annular disks 10 are determined by a distance away from the driving disk 30 . It gradually increases from side to side; when the variation between the inner diameter of each annular disc 10 represented by the abscissa axis and the inner diameter of the adjacent annular disc 10 below is a negative number, it means that the inner diameters of multiple annular discs 10 are determined by It tapers away from the side of the drive disc 30 to the other side.

It can be seen from FIG. 24 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 air 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, considering the air volume and air pressure of the laminar flow fan 100 comprehensively, 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 discs 10 of the laminar flow fan 100 is 175 mm, the distance between the annular discs 10 is 13.75 mm, the number of annular discs 10 is 8, and the thickness of the annular discs 10 is 2 mm, and the rotational speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute, revolutions per minute). At this time, considering the overall consideration of the air volume and air pressure of the laminar flow fan 100, it is possible to set the inner diameter and the lower part of each annular disc 10. The variation of the inner diameter of the adjacent annular disks 10 is -5 mm. That is, the inner diameters of the eight annular disks 10 can be set in sequence from one side away from the driving disk 30 to the other side: 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, 80mm , the inner diameter of each annular disc 10 is smaller than the inner diameter of the adjacent annular disc 10 below by 5 mm. It should be noted that the space between the annular disks 10 in the above specifically refers to the space between two adjacent annular disks 10 . It should also 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 air flows in the air inlet passage 11. The inner diameter of the disk 10 is gradually reduced.

FIG. 25 is a schematic diagram of the central angle of the connecting line of the inner and outer diameters of the plurality of annular discs 10 on the same longitudinal section passing through the central axis of the laminar flow fan 100 in which the annular discs 10 are arc-shaped discs. Schematic diagram of the relationship between the central angle and the air volume and air pressure. Each annular disk 10 of the laminar flow fan 100 in FIG. 25 is an arc-shaped disk that gradually approaches the driving disk 30 from the center to the edge and protrudes toward the side of the driving disk 30 . Compared with the flat disk, the arc-shaped disk can make the angle of the outside air entering the laminar flow fan 100 more in line with the fluid flow, which is more conducive to the outside air entering the laminar flow fan 100 and effectively reduces the loss of air volume. 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 connecting lines of 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. 26 refers to the central angle of the line connecting the inner and outer diameters of the plurality of annular discs 10 on the same longitudinal section passing through the central axis, the left ordinate axis Mass flow rate refers to the air volume, the right ordinate axis Pressure rise refers to the wind pressure. Specifically, FIG. 26 shows the relationship between the central angle θ and the air volume and air pressure when the outer diameter, number of layers, spacing, thickness, and rotational speed of the laminar flow motor 20 of the annular disc 10 of the laminar flow fan 100 remain unchanged. Schematic. As shown in FIG. 26 , 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 air 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 distance between the annular discs 10 is 13.75 mm, and the The thickness is 2 mm, and the rotational speed of the laminar flow motor 20 is 1000 rpm (revolutions per minute, revolutions per minute). At this time, considering the air volume and air pressure, the inner and outer diameters of the plurality of annular discs 10 on the same longitudinal section passing through the central axis are connected. The central angle θ of the line can be set to 9° to 30°. And as shown in FIG. 26 , 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 in this embodiment includes: a casing 310, which defines a cavity inside; The front panel 311, the rear case 312, the top panel 313 and the bottom panel 314, the rear case 312 includes a rear panel 315 and two side panels 316; the evaporator 382 is arranged inside the cavity corresponding to the air inlets 330, and is configured to pass through the air inlets 330 in pairs The air entering the cavity is heat exchanged, wherein the evaporator 382 is flat and parallel to the side panel 316; the laminar flow fan 110 is arranged above the evaporator 382, and is configured to use the viscous effect to make the heat exchanged through the evaporator 382. Part of the air forms a laminar flow wind, and the laminar flow wind is blown out from the upper air outlet 320; and the double suction centrifugal fan 610 is arranged below the laminar flow fan 110, and its axial direction is perpendicular to the side panel 316 and is configured to drive the evaporator 382 to exchange heat Part of the air is blown out from the air outlet 320 in the lower part. The indoor unit 300 of the vertical air conditioner is provided 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 provided with a double suction centrifugal fan 610, which can Effectively increase the air volume and air pressure of the lower part.

Further, in the indoor unit 300 of the vertical air conditioner in this embodiment, the casing 310 is provided with an air outlet 320 around the laminar flow fan 100 at the upper part; Outside the laminar flow fan 100 and has a gap 373; the housing 310 is provided with an air outlet 320 at a position corresponding to the gap 373, so that the indoor unit 300 of the vertical air conditioner can supply 360 degrees of air from the upper part, or to supply air from three sides or from both sides. Wind, single-sided air supply. The air inlets 330 can be arranged on the two side panels 316 to realize air intake from both sides and effectively increase the air intake volume. Two evaporators 382 are provided, and are respectively close to the two side panels 316 . The evaporator 382 is matched with the air inlet 330 , so that all the air entering the cavity through the air inlet 330 can exchange heat through the evaporator 382 . The laminar flow fan 110 includes a laminar flow fan 100 and a laminar flow motor 20 , and the laminar flow fan 100 is disposed inside the cavity corresponding to the upper air outlet 320 . The laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340 , wherein the fixing frame 350 is provided with a hole 352 in the center, and the output shaft 21 of the laminar flow motor 20 passes through the hole 352 and is fixed to the driving disc 30 of the laminar flow fan 100 , which can effectively enhance the connection firmness of the laminar flow fan 100 and the laminar flow motor 20 and improve the overall working reliability.

Further, in the indoor unit 300 of the vertical air conditioner in this embodiment, the plurality of annular discs 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 discs 10 are One side of the driving disc 30 is gradually reduced from the other side; the distance between two adjacent annular discs 10 in the plurality of annular discs 10 is gradually increased from one side away from the driving 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 one side of the driving disk 30 . The above-mentioned forms of disposing a plurality of 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 can meet the user's usage requirements. In addition, the connecting piece may be a connecting piece 40, and the cross-section of the connecting piece 40 has two curves arranged in sequence along the rotation direction 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 flow wind is blown 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 air channel 11 is pressed into the annular disc 10, and so on and so forth, thereby forming a laminar air circulation. The plurality of air exhaust ports 12 formed by the gaps between the plurality of annular discs 10 can enable the laminar flow fan 100 to achieve 360° air supply, avoid various discomfort symptoms caused by the user due to the direct blowing of the air by the air conditioner, and further improve the User experience.

Those skilled in the art should understand that, unless otherwise specified, the terms "up", "down", "left", "right", "front" and "rear" in the embodiments of the present invention are used to represent The terms of orientation or positional relationship are based on the actual use state of the indoor unit 300 of the vertical air conditioner, and these terms are only for the convenience of description and understanding of the technical solution of the present invention, rather than indicating or implying the device or device. The parts must have a specific orientation and therefore should not be construed as limiting the invention.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (13)

1. A vertical air conditioner indoor unit, comprising: The shell has a cavity defined inside, and the upper and lower parts of the shell are provided with air outlets, and the middle part is provided with an air inlet, the shell includes a front panel, a rear shell, a top plate and a bottom plate, and the rear shell includes rear panel and two side panels; an evaporator, disposed inside the cavity corresponding to the air inlet, configured to exchange heat for the air entering the cavity through the air inlet, wherein the evaporator is flat and parallel to the side panel ; a laminar flow fan, arranged above the evaporator, configured to use a viscous effect to form a laminar flow of air passing through the evaporator for heat exchange, and to blow the laminar flow out of the air outlet at the upper part; and The double suction centrifugal fan is arranged below the laminar flow fan, its axial direction is perpendicular to the side panel, and is configured to drive part of the air that has passed the heat exchange of the evaporator to be blown out from the air outlet at the lower part. 2. The vertical air conditioner indoor unit according to claim 1, wherein: The air inlets are arranged on the two side panels to achieve air intake from both sides, and The evaporators are provided with two and are respectively close to the two side panels. 3. The vertical air conditioner indoor unit according to claim 2, further comprising: Two baffles are respectively arranged at the front and the rear of the two evaporators to prevent the air exchanged through the evaporators from flowing to the front and the rear of the cavity. 4. The vertical air conditioner indoor unit according to claim 1, further comprising: a volute, which has two inlets and one outlet, and the outlet is arranged opposite to the air outlet at the lower part; The double-suction centrifugal fan is arranged inside the volute, and is also configured to: drive part of the air that has passed through the evaporator heat exchange to enter the volute from the two inlets, and enter the volute twice in the volute After turning, it is discharged from the outlet, and then blown out through the air outlet in the lower part. 5. 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 upper air outlet, 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, and a plurality of the annular discs An air inlet channel is formed in the center of the discs, and the air in the cavity enters the gaps between the plurality of annular discs through the air inlet channel; and a laminar flow motor, connected to the laminar flow fan, and configured to drive the plurality of annular discs to rotate, so that the air boundary layers close to the surfaces of the plurality of annular discs are rotated and moved from the inside to the outside, thereby forming a laminar flow wind Blow out from the air outlet. 6. The vertical air conditioner indoor unit according to claim 5, wherein: The laminar flow fan further includes: a driving disc, which is arranged parallel to one side of the plurality of annular discs at intervals; 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 drive the plurality of annular discs to rotate by the driving disc. 7. The vertical air conditioner indoor unit according to claim 6, further comprising: a fixing plate, one side of which is provided with a plurality of reinforcing ribs, and the other side is provided with a plurality of card slots; and a fixing frame, a side facing the fixing plate is provided with a plurality of claws corresponding to the plurality of clamping grooves, so as to separate the layers after the plurality of clamping claws are screwed into the plurality of clamping grooves respectively The flow motor is fixed between the fixing frame and the fixing plate, wherein a hole is formed in the center of the fixing frame, and the output shaft of the laminar flow motor passes through the hole and is fixed to the driving disc. 8. The vertical air conditioner indoor unit according to claim 6, further comprising: an air induction ring, arranged on the side of the plurality of annular discs away from the driving disc, and The air induction ring is configured to guide a portion of the air heat exchanged by the evaporator into the air inlet channel. 9. The indoor unit of a vertical air conditioner according to claim 5, wherein: The casing is provided with the air outlet around the laminar flow fan on its upper part; or The indoor unit of the vertical air conditioner further comprises: a wind shield, which is arranged outside the laminar flow fan and has a notch; and the casing is provided with the air outlet at a position corresponding to the notch. 10. The vertical air conditioner indoor unit according to claim 6, wherein: The center of the driving disc is formed with a groove toward the plurality of annular discs, and the laminar flow motor is fixedly arranged in the groove; or The surface of the drive disk facing the laminar flow motor is flat, and the surface facing the plurality of annular disks has conical protrusions to guide the flow of air entering the laminar flow fan and assist in forming the Laminar wind. 11. The indoor unit of a vertical air conditioner according to claim 6, wherein: 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 disc, and the chord length of the two curves is related to the air volume generated by the laminar flow fan. is a linear relationship. 12. The vertical air conditioner indoor unit according to claim 11, wherein, The cross section of the connecting piece has double arcs arranged in sequence along the rotation direction of the annular disc: an inner arc and a back arc, and both the inner arc and the back arc are in the direction of rotation of the annular disc 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. 13. The vertical air conditioner indoor unit according to claim 6, 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 disks gradually decrease from one side away from the driving disk to the other side; The spacing between two adjacent annular disks among 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.

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