CN209840266U - Ceiling type air conditioner indoor unit - Google Patents

Abstract

The utility model provides a ceiling type air conditioner indoor unit, which comprises a shell, wherein the side surface of the shell is provided with at least one air inlet and at least one air outlet, and the at least one air outlet is positioned above or below the at least one air inlet; the laminar flow fan is arranged in the shell in a way that the rotation axis extends vertically, the lateral peripheral surface of the laminar flow fan is opposite to the air outlet, and when the laminar flow fan runs, air is sucked from one axial end of the laminar flow fan, and laminar flow wind is generated by utilizing the viscosity effect of the air and is blown out outwards along the radial direction of the laminar flow fan; and a heat exchanger surrounding the laminar flow fan at a radially outer side thereof; when the laminar flow fan operates, indoor air is promoted to enter the shell from the air inlet, then the indoor air is sucked, blown to the heat exchanger for heat exchange, and finally blown back to the indoor through the air outlet. The utility model discloses a multi-direction, air supply on a large scale reduce the air supply noise, have promoted the noise quality.

Description

Ceiling type air conditioner indoor unit

Technical Field

The utility model relates to an air conditioning technology field, in particular to machine in suspension type air conditioning.

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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a machine in suspension type air conditioning to realize multi-direction, supply air on a large scale, and reduce the air supply noise, promote the noise quality, and make the bottom more complete pleasing to the eye.

The utility model discloses a further purpose makes the inner structure of machine in suspension type air conditioning compacter to promote the heat exchange efficiency of heat exchanger.

Particularly, the utility model provides a machine in suspension type air conditioning, it includes:

the side surface of the shell is provided with at least one air inlet and at least one air outlet, and the at least one air outlet is positioned above or below the at least one air inlet;

the laminar flow fan is arranged in the shell in a way that the rotation axis extends vertically, the lateral peripheral surface of the laminar flow fan is opposite to the air outlet, and when the laminar flow fan runs, air is sucked from one axial end of the laminar flow fan, and laminar flow wind is generated by utilizing the viscosity effect of the air and is blown out outwards along the radial direction of the laminar flow fan; and

a heat exchanger surrounding the laminar flow fan at a radially outer side thereof;

when the laminar flow fan operates, indoor air is promoted to enter the shell from the air inlet, then the indoor air is sucked, blown to the heat exchanger for heat exchange, and finally blown back to the indoor through the air outlet.

Optionally, the ceiling type air conditioner indoor unit further includes: a partition plate installed in the housing to partition an inner space of the housing from above and below; the at least one air inlet is positioned at one side of the partition plate, and the at least one air outlet, the laminar flow fan and the heat exchanger are positioned at the other side of the partition plate; and the edge of the clapboard is connected with the inner wall of the shell, and the center of the clapboard is provided with a ventilation opening to allow the air intake flow at one side of the clapboard to flow to the laminar flow fan at the other side of the clapboard.

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; and the motor is directly or indirectly fixed on the shell and used for driving the plurality of annular discs to rotate, so that an air boundary layer on the surfaces of the plurality of annular discs is driven by the plurality of annular discs to rotate and move from inside to outside in a radial direction due to a viscous effect to form laminar wind.

Optionally, the laminar flow fan further comprises: the circular disk is positioned at the non-air inlet axial end of the laminar flow fan, arranged in parallel with the annular disk at the end at intervals and indirectly fixedly connected with the annular disk, and the center of the circular disk is inwards sunken to form an accommodating cavity; and the motor extends into the containing cavity, and the rotating shaft of the motor is connected with the circular disk so as to drive the circular disk to rotate, thereby driving the plurality of annular disks to rotate.

Optionally, the ceiling type air conditioner indoor unit further includes: the mounting plate is fixedly arranged inside the shell; the fixing frame comprises a horizontally arranged fixing ring and a plurality of connecting arms vertically extending out of the edge of the fixing ring, and the connecting arms are detachably connected to the mounting plate; and the motor is pressed on the mounting plate by the fixing ring, and the rotating shaft of the motor extends out of the center of the fixing ring.

Optionally, the inner circle diameters of the plurality of annular disks are sequentially reduced along the axial air inlet direction of the laminar flow fan.

Optionally, the heat exchanger is in the form of a non-closed ring plate with a notch in the circumferential direction and an axis extending vertically.

Optionally, the ceiling type air conditioner indoor unit further includes: and the annular air duct is in an annular ring shape with the axis vertically extending, is arranged in the shell and surrounds the radial outer side of the heat exchanger, and is used for guiding the air flow which exchanges heat with the heat exchanger to at least one 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 flow towards the air outlet horizontally, or are truncated cone-shaped plates extending downwards gradually from inside to outside in a radial direction so as to guide the air outlet flow to flow towards the air outlet obliquely downwards; 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; and in four sides of the shell, each side is provided with an air inlet and an air outlet.

The utility model discloses a hoist and mount of suspension type air conditioning indoor set is on the roof, and whole casing side is whole to be shown outside, just so can arrange a plurality of air outlets in the side to realize two sides, trilateral, four sides air-out and circumference 360 multi-direction air supplies such as even, air supply range is very big. 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.

Further, the utility model discloses a machine adopts laminar flow fan in suspension type air conditioning, and it realizes that the annular does not have the dead angle air-out based on the laminar flow principle, is convenient for realize the multi-direction air supply of machine in the indoor. 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.

Further, the utility model discloses a machine in suspension type air conditioning sets up the heat exchanger in the radial outside of laminar flow fan, and need not to set up it in laminar flow fan top or below, can practice thrift the inner space of machine in suspension type air conditioning like this, makes its structure compacter, makes the complete machine volume of indoor set littleer. And, because of the heat exchanger surrounds laminar flow fan, make laminar flow fan's air current can more fast comprehensively pass through the heat exchanger surface, make the heat transfer volume and the heat exchange efficiency of heat exchanger all have very big promotion.

Further, the utility model discloses an among the suspension type air conditioning indoor set, along laminar flow fan's axial air inlet direction, the interior circle diameter of a plurality of annular discs diminishes in proper order. Thus, the inlet air flow can flow to each annular disc 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 present invention will be described in detail hereinafter, by way of illustration and not by way of 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 structural view of a ceiling type air conditioner indoor unit according to a first 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 the embodiment of FIG. 1;

FIG. 9 is a schematic cross-sectional view of a plurality of annular disks of the laminar flow fan of the embodiment shown in 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 with annular disks of unequal spacing;

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

fig. 13 is a schematic structural view of a ceiling type air conditioner indoor unit according to a second embodiment of the present invention;

fig. 14 is a sectional view taken along a vertical plane of the ceiling type air conditioning indoor unit of fig. 13;

fig. 15 is a schematic exploded view of the ceiling type air conditioner indoor unit shown in fig. 13;

FIG. 16 is an enlarged schematic view of the mount of FIG. 15;

FIG. 17 is a schematic view of the air circulation of the laminar flow fan of the embodiment of FIG. 13;

FIG. 18 is a schematic view of the air circulation of a laminar flow fan with annular disks of unequal spacing.

Detailed Description

The indoor unit of ceiling type air conditioner of the present invention constitutes a vapor compression refrigeration cycle system together with an outdoor unit of air conditioner (not shown), and realizes the refrigeration/heating of the indoor environment.

As shown in fig. 1, 2, 13 and 14, the ceiling type air conditioning indoor unit of the present invention may generally include a casing 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 side of the housing 100 is opened with at least one air inlet 110 and at least one air outlet 120. The air inlet 110 and the air outlet 120 have different height positions on the side of the housing 100, and the air outlet 120 is located above or below the air inlet 110. Namely, the indoor unit of the ceiling type air conditioner can select one of the following two air inlet and outlet modes. One of the air inlet and air outlet is air inlet at the upper part of the side surface and air outlet at the lower part of the side surface; the other is air inlet at the lower part of the side surface and air outlet at the upper part of the side surface.

The side of the casing of the indoor unit of the ceiling type air conditioner is basically and completely exposed outside, the air outlets can be conveniently arranged on the side of the casing, and the number 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 suspension type air conditioning indoor set keeps away from the side wall, if set up in roof central authorities, can set up if two, three, four etc. a plurality of towards diverse's air outlet to realize multidirectional air supply effects such as two-sided air-out, trilateral air-out, four sides air-out. Even, the shell can be circular, and the air outlets are formed in the circumferential full angle of the shell for air outlet, so that 360-degree all-directional air supply is realized.

The utility model discloses a multi-direction air supply, and air supply range is very big. 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 side at the casing with the air intake, 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.

The ceiling type air conditioner indoor unit according to the first embodiment of the present invention is described with reference to fig. 1 to 12, and the ceiling type air conditioner indoor unit of this embodiment adopts an air inlet/outlet manner in which air is introduced from the upper portion of the side of the casing and discharged from the lower portion of the side.

Fig. 1 is a schematic structural view of a ceiling type air conditioning indoor unit according to a first embodiment of the present invention, fig. 2 is an exploded schematic view of 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, in the first embodiment, the housing 100 has at least one air inlet 110 formed at an upper side portion thereof and at least one air outlet 120 formed at a lower side portion thereof. An air inlet grille can be disposed at the air inlet 110. 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. In the four side surfaces, each side surface is provided with an air outlet 120 for blowing air in four directions. Each side surface 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 400 and the laminar flow fan 300, as shown in fig. 2.

As shown in fig. 2 and 3, the rotation axis of the laminar flow fan 300 is vertically extended and disposed in the casing 100, and the side circumferential surface thereof is opposite to the air outlet 120. The laminar flow fan 300 operates by sucking air from one axial end thereof (the upper end in the embodiment of fig. 2), and then generating laminar flow wind by utilizing the viscous effect of the air and blowing the wind outward in the radial direction thereof.

As shown in fig. 3, the heat exchanger 400 surrounds the laminar flow fan 300 radially outward of the laminar flow fan 300. The heat exchanger 400 may be an evaporator of a vapor compression refrigeration cycle. When the laminar flow fan 300 operates, indoor air is forced to enter the casing 100 from the air inlet 110, and then the indoor air is sucked into the laminar flow fan 300, blown to the heat exchanger 400 for heat exchange, and finally blown back to the indoor through the air outlet 120. The above process is cycled to achieve cooling/heating of the indoor environment. Fig. 3 illustrates the direction of the wind with arrows.

As shown in fig. 2 and 3, the heat exchanger 400 may be a non-closed ring plate (circular, square, or irregular) having a gap 401 in the circumferential direction and extending vertically. It will be appreciated that the present embodiment is based on process considerations in designing the heat exchanger 400 as a non-closed loop plate, although it may be designed as a closed loop plate.

In the embodiment, the heat exchanger 400 is arranged at the radial outer side of the laminar flow fan 300, and the heat exchanger does not need to be arranged above or below the laminar flow fan, so that the inner space of the ceiling type air conditioner indoor unit can be saved, the structure of the ceiling type air conditioner indoor unit is more compact, and the overall volume of the indoor unit is smaller. Moreover, the heat exchanger 400 surrounds the laminar flow fan 300, so that the airflow of the laminar flow fan 300 can more rapidly and comprehensively pass through the surface of the heat exchanger 400, and the heat exchange amount and the heat exchange efficiency of the heat exchanger 400 are greatly improved.

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 is located at one side (the upper side in the illustrated embodiment) of the partition 800. The outlet port 120, the laminar flow fan 300, and the heat exchanger 400 are located at the other side (lower side in the illustrated embodiment) of the partition 800. The edge of the partition 800 is connected with the inner wall of the housing in a sealing manner to prevent the air flow from passing through, and the center of the partition 800 is provided with a vent 801 to allow the air flow at the upper side of the partition to flow to the other side of the partition 800 through the vent 801 and to flow to the laminar flow fan 300 at the lower side of the partition 800.

The partition 800 serves to separate the inlet airflow from the outlet airflow, thereby preventing the inlet airflow from directly flowing to the heat exchanger 400 and the outlet 120 without heat exchange to reduce the heat exchange efficiency, and preventing the outlet airflow from returning to the inlet 110 again to cause the cold/heat loss.

Referring to fig. 2 and 3, the laminar flow fan 300 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 directly or indirectly fixed to the casing 100 and is configured to drive the plurality of annular disks 10 to rotate, so that an air boundary layer on the surfaces of the plurality of annular disks 10 is driven by the plurality of annular disks 10 to rotate and move radially from inside to outside due to a viscous effect to form a laminar wind.

As shown in fig. 2 and 3, laminar flow fan 300 may also include a circular disk 30. The circular disk 30 is located at the non-inlet axial end (the lower end in the embodiment shown in the figure) of the laminar flow fan 300, and is arranged in parallel with and indirectly fixedly connected with the annular disk 10 at the end (i.e. the annular disk at the lowermost end) at a spacing. The center of the circular disk 30 is recessed inwardly (i.e., upwardly) to form a receiving chamber 31. Motor 20 extends into accommodation chamber 31, and its rotation shaft 21 is connected to circular disk 30 to drive circular disk 30 to rotate, thereby driving a plurality of annular disks 10 to rotate.

The laminar flow fan 300 may further include a plurality of connecting rods 40 extending vertically. The connecting rod 40 has one end fixed to the circular disk 30, and then extends vertically to penetrate the plurality of annular disks 10 and is fixed to each of the plurality of annular disks 10, so as to fix the plurality of annular disks 10 and the circular disk 30 to each other.

As shown in fig. 3, the laminar flow fan 300 is of an axial air inlet and radial air outlet structure. It sucks air axially and blows out air radially to blow the air horizontally to each air outlet 120. 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. 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 inside the housing 100. The fixing frame 50 includes a fixing ring 51 and a plurality of connecting arms 52 (at least two, for example, three as shown in fig. 4). The fixing ring 51 has a hollow ring shape and is disposed in a horizontal direction. The connecting arms 52 extend vertically from the edge of the fixed ring 51. The connecting arm 52 is removably attached to the mounting plate 105, and may be threaded. The motor 20 is pressed against the mounting plate 105 by the fixing ring 51 to be restrained thereby. The rotating shaft 21 of the motor 20 protrudes from the center of the fixed ring 51. Further, the heat exchanger 400 is placed on the mounting plate 105 to be supported thereby.

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.

As shown in fig. 3, 5 and 6, the ceiling type air conditioning indoor unit further includes an annular duct 700. The annular air duct 700 is in the shape of a ring with its axis extending vertically, is disposed in the casing 100, and is located between the heat exchanger 400 and the air outlet 120, and surrounds the heat exchanger 400 at the radial outer side. The annular air duct 700 is used for guiding the air flow which completes heat exchange with the heat exchanger 400 to the air outlet 120 in a preset direction.

As shown in fig. 5 and 6, 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 and 6, the predetermined direction is inclined downward in consideration of the high 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 extending downward from inside to outside in the radial direction so as to guide the air downward. Referring to fig. 6, a line L represents an extending direction of the upper surface of the annular base plate 720, and a line L1 represents a horizontally extending line, which are sandwiched at an acute angle. In some alternative configurations, the annular top plate and the annular bottom plate may also be flat plates extending in a plane so as to direct the flow of 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.

The laminar flow fan 300 of the present embodiment will be described in detail 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 the embodiment of FIG. 1; FIG. 9 is a schematic cross-sectional view of a plurality of annular disks of the laminar flow fan of the embodiment shown in 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.

The inner circle diameters of the respective annular disks of the laminar flow fan 300 may be made different from each other. For example, the inner circle diameters of the plurality of annular disks 10 are sequentially made smaller in the axial air intake direction of the laminar flow fan 300 (from the top to the bottom in the embodiment shown in fig. 1 to 12). In other words, the inner circle diameter of the annular disk 10 is gradually reduced in the direction in which the air flow flows in the intake air passage 11. 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 with annular disks of unequal spacing; 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 addition, the spacing between adjacent annular disks of the laminar flow fan 300 can be different. As shown in fig. 11, the distance between each two adjacent annular disks 10 may be gradually increased along the axial air intake direction of the laminar flow fan 300. Or, the distance between each two adjacent annular disks is gradually increased along the direction of the air flow flowing 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 is gradually changed, so that the influence on the air volume is large, and the influence on the air pressure is small. When the variation of the distance between two adjacent annular disks 10 along the axial air inlet direction is a positive number, the distance is gradually increased; when the variation of the distance between two adjacent annular disks 10 along the axial air inlet direction is negative, the distance is gradually reduced. The variation of the interval between the adjacent two annular disks 10 can be made the same. As can be seen from fig. 13, 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.

Considering the air volume and the air pressure of the laminar flow fan together, it is preferable that the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 is set to be gradually increased along the axial air intake direction. 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 to be sequentially set along the axial air inlet direction: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75 mm.

A ceiling type air conditioning indoor unit according to a second embodiment of the present invention will be described with reference to fig. 13 to 18, in which an air inlet/outlet manner is adopted in which air is supplied to a lower portion of a side surface of a casing and is discharged to an upper portion of the side surface.

Only the differences of the second embodiment from the first embodiment will be described in detail below. The main points are that the positions of the air inlet, the air outlet, the partition board and the mounting plate are different, and the placing postures of the laminar flow fan and the fixing frame are opposite.

Fig. 13 is a schematic structural view of a ceiling type air conditioner indoor unit according to a second embodiment of the present invention; fig. 14 is a sectional view taken along a vertical plane of the ceiling type air conditioning indoor unit of fig. 13; fig. 15 is a schematic exploded view of the ceiling type air conditioning indoor unit shown in fig. 13.

In the second embodiment of the present invention, as shown in fig. 13 to 15, at least one air inlet 110 is formed at the lower side portion of the housing 100, and at least one air outlet 120 is formed at the upper side portion.

As shown in fig. 14 and 15, the partition 800 is located at the inner bottom side of the case 100. The intake vent 110 is located at a lower side of the partition 800, and the exhaust vent 120, the laminar flow fan 300, and the heat exchanger 400 are located at an upper side of the partition 800. The center of the partition 800 is provided with a vent 801, the vent 801 is opposite to the bottom of the laminar flow fan 800, and the intake air flow is sucked into the laminar flow fan 300 after passing through the vent 801, and does not directly flow to the heat exchanger 400 without the effect of the laminar flow fan to affect the heat exchange efficiency.

The partition 800 is provided with two rings of upwardly extending limiting ribs, namely an inner ring limiting rib 810 and an outer ring limiting rib 820. The heat exchanger 400 is placed on the partition 800 to be supported thereby, and the bottom end of the heat exchanger 400 is sandwiched between two rings of the stopper ribs so that its position is restricted.

Referring to fig. 14 and 15, the circular disk 30 is located above the laminar flow fan 300, and is spaced apart from and indirectly fixedly connected to the uppermost annular disk 10. The center of the circular disk 30 is depressed downward to form a receiving chamber 31 for receiving the motor 20.

Fig. 16 is a schematic enlarged view of the fixing frame in fig. 15. As shown in fig. 14 to 16, the mounting plate 105 is located at the inner upper side of the housing 100, and the connecting arm 52 of the fixing frame 50 extends upward from the edge of the fixing ring 51 to connect the mounting plate 105. The motor 20 is located on the fixed ring 51. The fixed ring 51 bears the weight of the motor 20.

Fig. 17 is a schematic view of air circulation of the laminar flow fan of the embodiment shown in fig. 13.

The embodiment can also make the inner circle diameters of the annular disks of the laminar flow fan 300 different. For example, the inner circle diameters of the plurality of annular disks 10 are sequentially made smaller in the axial air intake direction of the laminar flow fan 300 (from the bottom to the top in the embodiment shown in fig. 13 to 18).

FIG. 18 is a schematic view of the air circulation of a laminar flow fan with annular disks of unequal spacing.

The embodiment can also make the distance between each adjacent annular disk of the laminar flow fan 300 different. As shown in fig. 18, the distance between each two adjacent annular disks 10 may be gradually increased along the axial air intake direction of the laminar flow fan 300 (from bottom to top in the embodiment shown in fig. 13 to 18). Or, the distance between each two adjacent annular disks is gradually increased along the direction of the air flow flowing in the air inlet channel 11. The utility model discloses the people is through experimental discovery many times, sets up the amount of wind that can effectively promote laminar flow fan like this.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present 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 side surface of the shell is provided with at least one air inlet and at least one air outlet, and the at least one air outlet is positioned above or below the at least one air inlet;

the laminar flow fan is arranged in the shell in a way that a rotating axis extends vertically, the lateral peripheral surface of the laminar flow fan is opposite to the air outlet, and when the laminar flow fan operates, air is sucked from one axial end of the laminar flow fan, and laminar flow wind is generated by utilizing the viscous effect of the air and is blown out outwards along the radial direction of the laminar flow fan; and

a heat exchanger surrounding the laminar flow fan radially outside thereof;

when the laminar flow fan operates, indoor air is promoted to enter the shell from the air inlet, then the indoor air is sucked, blown to the heat exchanger for heat exchange, and finally blown back to the indoor through the air outlet.

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

a partition installed in the housing to partition an inner space of the housing from above and below;

the at least one air inlet is positioned on one side of the partition plate, and the at least one air outlet, the laminar flow fan and the heat exchanger are positioned on the other side of the partition plate; and is

The edge of the partition board is connected with the inner wall of the shell, and a ventilation opening is formed in the center of the partition board so as to allow the air inlet flow on one side of the partition board to flow to the laminar flow fan on the other side of the partition board.

3. 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; and

and the motor is directly or indirectly fixed on the shell and used for driving the plurality of annular discs to rotate, so that an air boundary layer on the surfaces of the plurality of annular discs is driven by the plurality of annular discs to rotate and move from inside to outside in a radial direction due to a viscous effect to form laminar wind.

4. The indoor unit of a ceiling type air conditioner as set forth in claim 3, wherein the laminar flow fan further comprises:

the circular disk is positioned at the non-air inlet axial end of the laminar flow fan, arranged in parallel with the annular disk at the end at intervals and indirectly fixedly connected with the annular disk, and the center of the circular disk is inwards sunken to form an accommodating cavity; and is

The motor extends into the containing cavity, and the rotating shaft of the motor is connected with the circular disk so as to drive the circular disk to rotate, thereby driving the plurality of annular disks to rotate.

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 horizontally arranged fixing ring and a plurality of connecting arms vertically extending out of the edge of the fixing ring, and the connecting arms are detachably connected to the mounting plate; and is

The motor is pressed on the mounting plate by the fixed ring, and the rotating shaft of the motor extends out of the center of the fixed ring.

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

and along the axial air inlet direction of the laminar flow fan, the diameters of the inner circles of the annular discs are sequentially reduced.

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

the whole heat exchanger is in a non-closed ring plate shape, the axis of the non-closed ring plate shape extends vertically, and the periphery of the non-closed ring plate shape is provided with a notch.

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 heat exchanger, and is used for guiding the air flow which exchanges heat with the heat exchanger 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; and is

In four sides of the shell, each side is provided with one air inlet and one air outlet.