CN111442357A - Ceiling type air conditioner indoor unit - Google Patents

Abstract

The invention provides a ceiling type air conditioner indoor unit, which comprises a shell, wherein the upper part of the side surface of the shell is provided with at least one air inlet, and the lower part of the side surface of the shell is provided with at least one air outlet; a heat exchanger disposed within the housing; and the rotation axis of the laminar flow fan is vertically arranged in the shell in an extending manner and is positioned below the heat exchanger, when the laminar flow fan operates, indoor air is enabled to enter a space above the heat exchanger from the air inlet, then flows downwards through the heat exchanger to exchange heat with the heat exchanger to form heat exchange air, and then the heat exchange air is blown back to the indoor through the air outlet. The ceiling type air conditioner indoor unit realizes multi-directional and large-range air supply, reduces air supply noise and improves noise quality.

Description

Ceiling type air conditioner indoor unit

Technical Field

The invention relates to the technical field of air conditioning, in particular to a ceiling type air conditioner indoor unit.

Background

The existing air-conditioning indoor unit basically adopts a cross-flow fan, the air outlet direction is right ahead, although the air deflector is used for guiding the air left and right, and the swing blade is used for guiding the air up and down, the air-conditioning indoor unit is limited by a volute structure, the left and right air supply angles are usually smaller than 80 degrees, and the up and down air supply angles are usually smaller than 100 degrees. Therefore, the existing indoor unit has fewer air supply directions and very limited air supply range.

Moreover, current crossflow fans are primarily forward-facing blades that periodically impact the passing airflow, creating significant rotational noise. The volute is matched with the fan to achieve an air supply effect, and the front volute tongue and the rear volute tongue can impact airflow to generate strong turbulence noise. In the prior art, the noise quality is hardly improved obviously.

Disclosure of Invention

The invention aims to provide a ceiling type air conditioner indoor unit, which can realize multi-directional and large-range air supply, reduce air supply noise, improve noise quality and enable the bottom to be more complete and attractive.

In particular, the present invention provides a ceiling type air conditioner indoor unit, comprising:

the upper part of the side surface of the shell is provided with at least one air inlet, and the lower part of the side surface of the shell is provided with at least one air outlet;

the heat exchanger is arranged in the shell; and

laminar flow fan, axis of rotation set up in the casing vertically extending, and be located the heat exchanger below, and laminar flow fan moves, makes indoor air get into heat exchanger top space from the air intake, and the heat exchanger that flows through downwards again forms heat exchange wind with it heat exchange, then blows heat exchange wind indoor through the air outlet.

Optionally, the ceiling type air conditioner indoor unit further includes: the partition board is arranged in the shell and divides the inner space of the shell from top to bottom, the at least one air inlet and the heat exchanger are positioned on the upper side of the partition board, and the at least one air outlet and the laminar flow fan are positioned on the lower side of the partition board; the edge of the partition board is connected with the inner wall of the shell, and the center of the partition board is provided with a ventilation opening to allow the heat exchange air on the upper side of the partition board to flow downwards to the laminar flow fan on the lower side of the partition board.

Optionally, the separator comprises: a base plate part, the center of which is provided with a ventilation opening; and at least one support rib extending upwardly from a periphery of the vent opening for supporting the heat exchanger upwardly against to form a gap between the heat exchanger and the upper surface of the base plate portion.

Optionally, the laminar flow fan comprises: a plurality of annular discs which are arranged in parallel at intervals and fixedly connected with each other, and the axes of which extend vertically and are collinear; the circular disk is coaxial with the annular disk at the lowest part and is arranged below the annular disk at intervals in parallel, and the center of the circular disk is sunken upwards to form an accommodating cavity; and the motor is positioned in the accommodating cavity, the bottom of the motor is directly or indirectly fixed on the shell, and the top of the motor extends out of the rotating shaft to be connected with the circular disk so as to drive the circular disk to rotate, so that the plurality of annular disks are driven to rotate, and an air boundary layer on the surfaces of the plurality of annular disks is driven by the plurality of annular disks to rotate from inside to outside due to the viscous effect to form laminar air.

Optionally, the ceiling type air conditioner indoor unit further includes: the mounting plate is fixedly arranged inside the shell; the fixing frame comprises a pressing ring and a plurality of connecting arms extending downwards from the edge of the pressing ring, and the connecting arms are detachably connected to the mounting plate; and the motor is placed on the mounting plate and is located on the lower side of the pressing ring so as to be restrained by the pressing ring, and the rotating shaft of the motor extends upwards from the center of the pressing ring.

Alternatively, for any adjacent two annular disks, the inner circle diameter of the annular disk located on the upper side is larger than the inner circle diameter of the annular disk located on the lower side.

Alternatively, the heat exchanger is flat and it is placed along a horizontal plane within the housing.

Optionally, the ceiling type air conditioner indoor unit further includes: the annular air duct is in an annular shape with an axis extending vertically, is arranged in the shell and surrounds the radial outer side of the laminar flow fan, and is used for guiding the air outlet airflow of the laminar flow fan to the air outlet in a preset direction.

Optionally, the annular duct comprises: the annular top plate and the annular bottom plate are arranged in parallel at intervals, and are coaxial, and the axes of the annular top plate and the annular bottom plate vertically extend; the annular top plate and the annular bottom plate are flat plates extending in a plane so as to guide the air outlet flow to horizontally flow to the air outlet, or are truncated cone-shaped plates extending downwards from inside to outside in a radial direction so as to guide the air outlet flow to flow downwards in an inclined mode to the air outlet; and the upper end and the lower end of each connecting strip are respectively and fixedly connected with the annular top plate and the annular bottom plate.

Optionally, the housing is generally square; the whole shell is square; the lower part of each side surface of the four side surfaces of the shell is respectively provided with an air outlet; and air inlets are formed in the upper parts of one or more of the four side surfaces of the shell.

The ceiling type air conditioner indoor unit is hung on a roof, and the side face of the whole shell is completely exposed outside, so that a plurality of air outlets can be arranged on the side face, air is discharged from two sides, three sides and four sides, even air is supplied in multiple directions of 360 degrees in the circumferential direction, and the air supply range is extremely large. And the air inlet is also arranged on the side surface of the shell, so that the bottom surface of the shell mainly facing a user is more complete and beautiful because an air inlet structure is not required to be designed.

Furthermore, the ceiling type air conditioner indoor unit disclosed by the invention adopts a laminar flow fan, and realizes annular dead-angle-free air outlet based on a laminar flow principle, so that multidirectional air supply of the indoor unit is conveniently realized. And the laminar flow fan applies work by utilizing the viscosity of the air boundary layer, the annular disc is basically parallel to the flowing direction of the air flow, and the impact air flow cannot be disturbed strongly to generate violent vortex, so that the noise is greatly reduced, the noise quality is excellent, and the user experience is obviously improved.

Furthermore, for any two adjacent annular disks, the diameter of the inner circle of the annular disk positioned on the upper side is larger than that of the inner circle of the annular disk positioned on the lower side, so that air flows to each annular disk more uniformly and smoothly, the air quantity is increased, and the operating efficiency of the laminar flow fan is improved.

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

Drawings

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

fig. 1 is a schematic view illustrating a ceiling type air conditioner indoor unit according to an embodiment of the present invention;

fig. 2 is a schematic exploded view of the ceiling type air conditioner indoor unit shown in fig. 1;

fig. 3 is a sectional view taken along a vertical plane of the ceiling type indoor unit of the air conditioner shown in fig. 1;

FIG. 4 is an enlarged schematic view of the fixture of FIG. 2;

fig. 5 is a schematic view of the ceiling type air conditioner indoor unit shown in fig. 1 after a casing is hidden;

FIG. 6 is a schematic structural view of the annular duct of FIG. 5;

FIG. 7 is a schematic diagram of the air supply principle of the laminar flow fan;

FIG. 8 is a schematic top view of the laminar flow fan of FIG. 1;

FIG. 9 is a schematic cross-sectional view of a plurality of annular disks of the laminar flow fan of FIG. 1;

FIG. 10 is a schematic view of the air circulation of the laminar flow fan of the embodiment of FIG. 1;

FIG. 11 is a schematic view of the air circulation of a laminar flow fan according to another embodiment of the present invention;

FIG. 12 is a schematic diagram showing the relationship between the gradual change of the pitch of a plurality of annular disks and the air volume and the air pressure of a laminar flow fan.

Detailed Description

A ceiling type air conditioning indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 12. Where the orientations or positional relationships indicated by the terms "front," "back," "upper," "lower," "top," "bottom," "inner," "outer," "lateral," and the like are based on the orientations or positional relationships shown in the drawings, the description is for convenience only and to simplify the description, and no indication or suggestion is made that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

The ceiling type air conditioner indoor unit and the air conditioner outdoor unit (not shown) of the embodiment of the invention form a vapor compression refrigeration cycle system together, so that the indoor environment can be cooled/heated.

Fig. 1 is a schematic view illustrating a ceiling type air conditioning indoor unit according to an embodiment of the present invention, fig. 2 is an exploded view illustrating the ceiling type air conditioning indoor unit shown in fig. 1, and fig. 3 is a sectional view of the ceiling type air conditioning indoor unit shown in fig. 1, which is cut along a vertical plane.

As shown in fig. 1 to 3, a ceiling type air conditioning indoor unit according to an embodiment of the present invention may generally include a case 100, a heat exchanger 400, and a laminar flow fan 300.

The ceiling type air conditioner indoor unit is integrally hung below an indoor roof, and the top of the casing 100 is used for being connected with the roof. The housing 100 has at least one intake vent 110 at an upper side thereof and at least one exhaust vent 120 at a lower side thereof. A grill may be disposed at the intake vent 110.

Because the side of the shell of the indoor unit of the ceiling type air conditioner is basically and completely exposed outside, the quantity of the air outlets can be set according to the requirement. For example, if the indoor unit is installed on the roof near the side wall, only one air outlet may be provided. If the installation position of this indoor set is kept away from the side wall, if set up in roof central authorities, can set up if two, three, four etc. a plurality of air outlets towards the diverse to realize multidirectional air supply effects such as two-sided air-out, trilateral air-out, four sides air-out. Even, can make the casing be circular, its circumference full angle all sets up the air outlet and is used for the air-out to realize 360 all-round air supplies.

The invention realizes multi-directional air supply, and the air supply range is extremely large. And, because of the ceiling type air conditioner indoor set mounted position is higher, its air-out coverage is also very big, does benefit to promote refrigeration/heating speed, and makes the user more comfortable. And, set up the air intake in the casing side, make the casing bottom surface that mainly faces the user more complete pleasing to the eye because of need not to design the air inlet structure like this.

An alternative configuration of the housing 100 is shown in fig. 2. The housing 100 is generally square and includes two oppositely disposed "U" shaped side plates 101, 102, a top plate 104 and a bottom plate 103. Two straight edges of each U-shaped side plate extend along the vertical direction. The two U-shaped side plates are connected in a straight line edge way to form a square ring shape and are provided with four side surfaces. The lower portion of each of the four side surfaces is provided with an air outlet 120 for blowing air in four directions. The upper portion of each side is provided with an air inlet 110 to realize air inlet from four directions. Of course, one, two or three air inlets or one, two or three air outlets may be provided on the housing 100, which is selected according to actual needs.

The top plate 104 covers the top of the two U-shaped side plates, and the bottom plate 103 covers the bottom of the two U-shaped side plates to jointly enclose a closed space for accommodating the heat exchanger and the laminar flow fan, as shown in FIG. 2.

The heat exchanger 400 is disposed in the casing 100 at an upper portion of the inner space of the casing 100. The heat exchanger 400 may be an evaporator of a vapor compression refrigeration cycle. The heat exchanger 400 may have a flat plate shape, which is disposed along a horizontal plane within the casing 100, as shown in fig. 2. Of course, the heat exchanger 400 may have other shapes, such as a polygonal line or a wave.

The rotation axis of the laminar flow fan 300 is provided in the casing 100 to extend in the vertical direction (up-down direction), and is located below the heat exchanger 400. When the laminar flow fan 300 operates, laminar flow air is generated by air viscosity, so that indoor air enters a space above the heat exchanger 400 from the air inlet 110, flows downwards through the heat exchanger 400 to exchange heat with the heat exchanger 400 to form heat exchange air (during refrigeration, the heat exchange air is cold air, and during heating, the heat exchange air is hot air), and then blows the heat exchange air back to the indoor through the air outlet 120. Fig. 1 and 3 illustrate the direction of the wind with arrows.

As shown in fig. 2 and 3, a partition 800 is also fixedly installed in the housing 100. The partition plate 800 partitions the inner space of the casing 100 into upper and lower portions. The intake vent 110 and the heat exchanger 400 are located at an upper side of the partition 800. The outlet port 120 and the laminar flow fan 300 are located at the lower side of the partition 800. The edge of the partition 800 is connected to the inner wall of the casing 100 to prevent the air flow from passing through, and the center of the partition 800 is opened with a vent 801 to allow the heat exchange air on the upper side of the partition 800 to flow down to the laminar flow fan 300 on the lower side of the partition 800 through the vent 801.

The partition 800 serves to separate the air flow from the inlet air flow to the outlet air flow, so as to prevent the air flow from directly flowing to the outlet 120 without heat exchange, and prevent the air flow (i.e., the heat exchange air) from returning to the heat exchanger 400 again to affect the heat exchange of the air flow.

The separator 800 also functions to support the heat exchanger 400. As shown in fig. 2 and 3, the separator 800 includes a base plate portion 810 and at least one support rib 830 (one square support rib and two "V" shaped support ribs located outside the square support rib are provided as in fig. 2). The center of the substrate 810 is opened with the vent 801. The base plate 810 is provided with a flange 820 at its edge to better abut against the inner side of the housing 100, as shown in fig. 3. Support ribs 830 extend upwardly from the periphery of the vent 801. The heat exchanger 400 is placed on the separator 800, and the support ribs 830 serve to support the heat exchanger 400 upward. The purpose of the support ribs 830 is to provide a gap between the heat exchanger 400 and the upper surface of the base plate portion 810 to allow airflow to enter for heat exchange with the bottom portion of the heat exchanger 400.

As shown in fig. 3, the laminar flow fan 300 is of an axial air inlet and radial air outlet structure. The air is introduced from the upper side thereof to absorb the heat exchange air, and the air is radially discharged to blow the air to each air outlet 120 horizontally. Laminar flow fan 300 realizes the air-out of annular no dead angle based on the laminar flow principle. Moreover, the laminar flow fan 300 applies work by using the viscosity of the air boundary layer, the annular disk 10 is basically parallel to the flowing direction of the air flow, and the impact air flow is not disturbed strongly to generate severe vortex, so that the noise is greatly reduced, the noise quality is excellent, and the user experience is obviously improved.

As shown in fig. 2 and 3, the laminar flow fan 300 generally includes a plurality of annular disks 10 and a motor 20. A plurality of annular discs 10 are arranged in parallel at intervals and fixedly connected with each other, and the axes of the annular discs extend vertically and are collinear. The motor 20 is used for driving the plurality of annular discs 10 to rotate, so that an air boundary layer on the surfaces of the plurality of annular discs 10 is driven by the plurality of annular discs 10 to rotate from inside to outside due to a viscous effect to form laminar wind.

In some alternative constructions, the laminar flow fan 300 further includes a circular disk 30 and a plurality of tie rods 40 extending vertically. The circular disks 30 are coaxial with and disposed in parallel spaced relationship below the lowermost annular disk 10. The bottom end of the connecting rod 40 is fixed to the circular disk 30, and penetrates the plurality of annular disks 10 upward, and is fixed to each annular disk 10, so as to fix the plurality of annular disks 10 and the circular disk 30 to each other.

The center of the circular disk 30 may be depressed upward to form a receiving chamber 31. The motor 20 is located in the accommodating cavity 31, and the bottom of the motor is directly or indirectly fixed to the housing 100, and the top of the motor extends out of the rotating shaft 21. The rotating shaft 21 is connected to the circular disk 30 to drive the circular disk 30 to rotate, thereby driving the plurality of annular disks 10 to rotate. More specific principles and structures of the laminar flow fan 300 are described in more detail below.

Fig. 4 is a schematic enlarged view of the fixing frame in fig. 2. Referring now to fig. 2 and 4, one manner of coupling the motor 20 to the housing 100 will be described. The ceiling type air conditioning indoor unit includes a mounting plate 105 and a fixing bracket 50. The motor 20 is fixed to the mounting plate 105 by a fixing bracket 50.

The mounting plate 105 is fixedly disposed at the bottom side inside the housing 100. The holder 50 includes a pressing ring 51 and a plurality of connecting arms 52 (at least two, for example, three as shown in fig. 4). The pressing ring 51 has a hollow ring shape. The connecting arm 52 extends downward from the edge of the pressing ring 51, and its lower end is detachably connected to the mounting plate 105, specifically, by means of a screw connection. The motor 20 is placed on the mounting plate 105 and positioned at the lower side of the pressing ring 51 to be restrained thereby, and the rotation shaft 21 of the motor 20 protrudes upward from the center of the pressing ring 51.

As shown in fig. 1 and 3, at least one wind deflector 600 for guiding a wind direction is disposed at each wind outlet 120. The wind deflector 600 is elongated with a length direction parallel to the horizontal direction, and a rotation axis thereof is parallel to the length direction. When the plurality of wind deflectors 600 are provided, the plurality of wind deflectors 600 are arranged from top to bottom.

The wind deflector 600 can rotate to open or close the wind outlet 120, and the wind outlet direction of the wind outlet 120 can be changed by rotating the wind deflector 600 to different angles. The air deflector 600 can be driven to rotate by a motor, and specific driving mechanisms are not described in detail.

Fig. 5 is a schematic structural view of the ceiling type air conditioning indoor unit shown in fig. 1 after a casing is hidden, and fig. 6 is a schematic structural view of an annular duct shown in fig. 5.

In some embodiments of the present invention, as shown in fig. 3, 5 and 6, the ceiling type air conditioner indoor unit further includes an annular duct 700. The annular air duct 700 is in the shape of a ring with a vertical axis, is disposed in the casing 100, and is located between the laminar flow fan 300 and the air outlet 120, and surrounds the laminar flow fan 300 radially outside. The annular air duct 700 is used for guiding the outlet airflow of the laminar flow fan 300 to the air outlet 120 in a preset direction.

As shown in fig. 5 to 7, the annular air duct 700 may specifically include an annular top plate 710, an annular bottom plate 720, and a plurality of connecting strips 730. The annular top plate 710 is positioned above the annular bottom plate 720 and the two are spaced apart in parallel. Furthermore, both are coaxial and the axis extends vertically. The upper and lower ends of each connecting strip 730 are fixedly connected with the annular top plate 710 and the annular bottom plate 720 respectively. The connecting bar 730 should be disposed at a position away from the air outlet 120 to prevent the air outlet from being blocked.

In the embodiment shown in fig. 5 to 7, the predetermined direction is inclined downward in consideration of the installation position of the ceiling type air conditioning indoor unit, and thus the annular top plate 710 and the annular bottom plate 720 are truncated conical plates gradually extending downward from the inside to the outside in the radial direction, so as to guide the air downward, as shown in fig. 6, a line L represents the extending direction of the upper surface of the annular bottom plate 720, and a line L1 represents a horizontally extending line, which forms an acute angle therebetween.

In some alternative embodiments, the annular top plate and the annular bottom plate may also be flat plates extending in a plane so as to guide the flow of the outlet air horizontally toward the outlet opening.

In the embodiment, the annular air duct 700 is utilized to guide more air flow of the laminar flow fan to the air outlet 120 more smoothly, so as to reduce energy loss and noise caused by vortex.

Of course, in some alternative embodiments, in order to save cost, the annular air duct may not be provided, so that the air outlet of the laminar flow fan directly flows to the air outlet.

The laminar flow fan 300 will be described in detail below with reference to fig. 7 to 12. Fig. 7 is a schematic diagram of the blowing principle of the laminar flow fan. As shown in fig. 7, the blowing principle of the laminar flow fan is mainly derived from a "tesla turbine" found in nigula tesla. Tesla turbines mainly utilize the 'laminar boundary layer effect' or 'viscous effect' of the fluid to achieve the purpose of doing work on 'turbine disks'. When the annular disks 10 rotate at a high speed, air in the spaces of the annular disks 10 contacts and moves with each other, and an air boundary layer 13 close to the surface of each annular disk 10 is driven by the rotating annular disks 10 to rotate from inside to outside to form laminar air under the action of viscous shear force tau.

FIG. 8 is a schematic top view of the laminar flow fan of FIG. 1; FIG. 9 is a schematic cross-sectional view of a plurality of annular disks of the laminar flow fan of FIG. 1; fig. 10 is a schematic view of air circulation of the laminar flow fan of the embodiment shown in fig. 1.

As shown in fig. 9 and 10, an air inlet passage 11 is formed at the center of the annular disk 10 to allow external air to enter. A plurality of air outlet channels 12 are formed in gaps between the plurality of annular disks 10 for blowing out laminar air. The process of the laminar wind formed by the air boundary layer 13 rotating from inside to outside is centrifugal motion, so that the speed of the laminar wind leaving the air outlet channel 12 is higher than that of the laminar wind entering the air inlet channel 11.

In some embodiments, for any adjacent two annular disks 10, the inner circle diameter of the annular disk 10 located on the upper side is larger than the inner circle diameter of the annular disk 10 located on the lower side. In other words, the inner circle diameter of the annular disk 10 is gradually reduced in the direction in which the air flows in the air intake passage 11 (i.e., from the top to the bottom). Therefore, when air enters the air inlet channel 11 from top to bottom, the air flows at different positions in the radial direction respectively correspond to different annular disks 10, so that the air can flow to the annular disks more uniformly, the air is prevented from entering the annular disks at the lower side difficultly, and the effect of improving the air volume is finally achieved.

FIG. 11 is a schematic view of the air circulation of a laminar flow fan according to another embodiment of the present invention; FIG. 12 is a schematic diagram showing the relationship between the gradual change of the pitch of a plurality of annular disks and the air volume and the air pressure of a laminar flow fan.

In other embodiments, as shown in fig. 11, the distance between two adjacent annular disks 10 may be gradually increased from top to bottom. Or, the distance between two adjacent annular disks 10 is gradually increased along the direction of the air flow in the air inlet channel 11. Through a plurality of experiments, the air quantity of the laminar flow fan can be effectively improved. With particular reference to fig. 12.

In fig. 12, the abscissa axis shock uniform expansion Plate distance increment refers to the variation of the distance between two adjacent annular discs 10 along the direction from bottom to top, the left ordinate axis Mass flow rate refers to the air volume, the right ordinate axis Pressure refers to the air Pressure, and the air Pressure refers to the Pressure difference between the inlet of the air outlet channel 12 and the inlet of the air inlet channel 11 of the laminar flow fan. Also, the variation amount of the pitch between two adjacent annular disks 10 is the same, that is, the increase or decrease of the pitch between two adjacent annular disks 10 is the same.

Specifically, fig. 12 is a schematic diagram illustrating the relationship between the gradual change of the pitch of the plurality of ring disks 10 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness of the ring disks 10 and the rotation speed of the motor 20 of the laminar flow fan are all kept constant. When all the above mentioned parameters are kept unchanged, in the plurality of annular disks 10, the distance between every two adjacent annular disks 10 gradually changes from bottom to top, which has a large influence on the air volume and a small influence on the air pressure. When the variation of the distance between two adjacent annular disks 10 along the direction from top to bottom, which is represented by the abscissa axis, is a positive number, it indicates that the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from top to bottom; when the variation of the distance between two adjacent annular disks 10 along the direction from the top to the bottom, which is shown by the abscissa axis, is negative, it indicates that the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually decreases from the top to the bottom. The variation of the interval between the adjacent two annular disks 10 can be made the same. As can be seen from fig. 12, when the variation of the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 is-1 mm, 1mm and 2mm, the air volume and the air pressure of the laminar flow fan are both greatly improved. The air volume and the air pressure of the laminar flow fan are comprehensively considered, and the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 is gradually increased from top to bottom. For example, the outer diameter of the ring disk 10 is 175mm, the inner diameter of the ring disk 10 is 115mm, the number of the ring disks 10 is 8, the thickness of the ring disk 10 is 2mm, and the rotation speed of the motor 20 is 1000rpm (revolutions per minute), at this time, the air volume and the air pressure of the laminar fan are considered comprehensively, and the distance between two adjacent ring disks 10 in the 8 ring disks 10 can be set from top to bottom in sequence: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, namely, the distance between two adjacent annular discs 10 is increased by 1mm from top to bottom.

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

Claims (10)

1. A ceiling type air conditioner indoor unit, characterized by comprising:

the upper part of the side surface of the shell is provided with at least one air inlet, and the lower part of the side surface of the shell is provided with at least one air outlet;

a heat exchanger disposed within the housing; and

and the rotating axis of the laminar flow fan is vertically arranged in the shell in an extending manner and is positioned below the heat exchanger, when the laminar flow fan operates, indoor air is enabled to enter the space above the heat exchanger from the air inlet, then flows downwards through the heat exchanger to exchange heat with the heat exchanger to form heat exchange air, and then the heat exchange air is blown back to the indoor space through the air outlet.

2. The indoor unit of a ceiling type air conditioner as set forth in claim 1, further comprising:

the partition plate is arranged in the shell to vertically partition the inner space of the shell, the at least one air inlet and the heat exchanger are positioned on the upper side of the partition plate, and the at least one air outlet and the laminar flow fan are positioned on the lower side of the partition plate; and is

The edge of the partition plate is connected with the inner wall of the shell, and the center of the partition plate is provided with a ventilation opening so as to allow heat exchange air on the upper side of the partition plate to flow downwards to the laminar flow fan on the lower side of the partition plate.

3. The indoor unit of a ceiling type air conditioner as set forth in claim 2, wherein the partition plate comprises:

a base plate part, the center of which is provided with the ventilation opening; and

at least one support rib extending upwardly from the vent periphery for supporting the heat exchanger upwardly against to form a gap between the heat exchanger and the base plate portion upper surface.

4. The indoor unit of a ceiling type air conditioner of claim 1, wherein the laminar flow fan comprises:

a plurality of annular discs which are arranged in parallel at intervals and fixedly connected with each other, and the axes of which extend vertically and are collinear;

the circular disk is coaxially arranged below the annular disk at the lowest part at intervals in parallel, and the center of the circular disk is upwards sunken to form an accommodating cavity; and

and the motor is positioned in the accommodating cavity, the bottom of the motor is directly or indirectly fixed on the shell, and the top of the motor extends out of a rotating shaft to be connected with the circular disk so as to drive the circular disk to rotate, so that the plurality of annular disks are driven to rotate, and an air boundary layer on the surfaces of the plurality of annular disks is driven by the plurality of annular disks to rotate from inside to outside due to a viscous effect to form laminar air.

5. The indoor unit of a ceiling type air conditioner as set forth in claim 4, further comprising:

the mounting plate is fixedly arranged inside the shell; and

the fixing frame comprises a pressing ring and a plurality of connecting arms extending downwards from the edge of the pressing ring, and the connecting arms are detachably connected to the mounting plate; and is

The motor is placed on the mounting panel, and is located the clamping ring downside is in order to receive its restraint, the pivot of motor is followed upwards stretch out in clamping ring central authorities.

6. The indoor unit of a ceiling type air conditioner as set forth in claim 4,

for any adjacent two of the annular disks, the inner circle diameter of the annular disk located on the upper side is larger than that of the annular disk located on the lower side.

7. The indoor unit of a ceiling type air conditioner as set forth in claim 1,

the heat exchanger is flat and is arranged in the shell along a horizontal plane.

8. The indoor unit of a ceiling type air conditioner as set forth in claim 1, further comprising:

and the annular air duct is in an annular ring shape with the axis extending vertically, is arranged in the shell and surrounds the radial outer side of the laminar flow fan, and is used for guiding the air outlet airflow of the laminar flow fan to the at least one air outlet in a preset direction.

9. The indoor unit of a ceiling type air conditioner as claimed in claim 8, wherein the annular duct comprises:

the annular top plate and the annular bottom plate are arranged in parallel at intervals, and are coaxial, and the axes of the annular top plate and the annular bottom plate vertically extend; the annular top plate and the annular bottom plate are flat plates extending in a plane so as to guide the air outlet flow to horizontally flow to the air outlet, or are truncated cone-shaped plates extending downwards from inside to outside in a radial direction so as to guide the air outlet flow to obliquely flow downwards to the air outlet; and

and the upper end and the lower end of each connecting strip are respectively and fixedly connected with the annular top plate and the annular bottom plate.

10. The indoor unit of a ceiling type air conditioner as set forth in claim 1,

the whole shell is square;

in the four side surfaces of the shell, the lower part of each side surface is provided with one air outlet;

and the air inlet is formed in the upper part of one or more of the four side surfaces of the shell.

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