CN209744539U - 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 top of the shell is used for being fixed on a roof, the bottom of the shell is provided with an air inlet, and the side part of the shell is provided with at least one air supply outlet; the heat exchanger is arranged in the shell; the main fan is arranged in the shell and used for promoting indoor air to enter the shell from the air inlet, exchange heat with the heat exchanger and then flow to the air supply outlet; and the booster fan is arranged at the air inlet and used for promoting indoor air to flow to the air inlet so as to improve the air inlet amount of the air inlet. The utility model discloses a machine in suspension type air conditioning is sufficient many angles, all-round air supply, and complete machine efficiency is higher.

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

Conventional household air conditioners are typically cabinet or on-hook. Indoor units of cabinet air conditioners and on-hook units typically have a supply air outlet to supply air to the room. In addition, the cabinet machine and the hanging machine are limited by the structure, the air can be supplied in only one direction, and the air supply direction is single.

in addition, although the air guide plate and the swinging blade are used for guiding air, the air supply range is still not large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machine in air conditioning that can all-round, multi-angle air supply.

The utility model discloses a another aim promotes the intake of machine air intake in suspension type air conditioning to promote the operating efficiency of main fan.

the utility model discloses a still another aim is to make the noise of machine in suspension type air conditioning littleer, the amount of wind is higher.

particularly, the utility model provides a machine in suspension type air conditioning, include:

The top of the shell is used for being fixed on a roof, the bottom of the shell is provided with an air inlet, and the side of the shell is provided with at least one air supply outlet;

The heat exchanger is arranged in the shell;

The main fan is arranged in the shell and used for promoting indoor air to enter the shell from the air inlet, exchange heat with the heat exchanger and then flow to the air supply outlet; and

and the booster fan is arranged at the air inlet and used for promoting indoor air to flow to the air inlet so as to improve the air inlet amount of the air inlet.

optionally, the booster fan is a ducted fan with an axis extending in a vertical direction, and a duct of the ducted fan is hermetically attached to the edge of the air inlet.

alternatively, the booster fan is an axial fan having an axis extending in a vertical direction.

Optionally, the booster fan is disposed inside the housing with the air inlet below the booster fan.

Optionally, the number of the at least one air blowing opening is multiple, and the multiple air blowing openings are respectively used for blowing air towards different directions.

Optionally, an air deflector is disposed at each air supply opening, and the air deflector is rotatably mounted on the casing to open and close the air supply opening or rotatably adjust an air supply angle of the air supply opening.

optionally, the main fan is a laminar flow fan, comprising: the annular disks are arranged in parallel at intervals and fixedly connected with each other, and the axes of the annular disks extend along the vertical direction and are collinear; and the motor is used for driving the plurality of annular discs to rotate so that an air boundary layer close to the surfaces of the plurality of annular discs is driven by the plurality of annular discs to rotate from inside to outside due to the viscous effect to form laminar wind.

Optionally, for a plurality of annular disks, the distance between two adjacent annular disks gradually increases from bottom to top.

Optionally, the main fan is a centrifugal fan with an axis extending in a vertical direction.

Optionally, the heat exchanger is between the main fan and the supply air outlet and surrounds the main fan.

The utility model discloses an indoor set of air conditioner is indoor set of ceiling type air conditioner, and its hoist and mount are on the roof, and the air intake is located the bottom, and the supply-air outlet is located the lateral part. Therefore, the plurality of air supply openings can be arranged on the side part and face different directions, and all-around air outlet and circumferential 360-degree all-around air supply can be realized. And because the installation position of the ceiling type air conditioner indoor unit is higher, the air outlet coverage range is also extremely large.

Further, the utility model discloses an among the suspension type air conditioning indoor set, air intake department is provided with the booster fan, can realize the pressure boost that admits air of air intake, makes the air current overcome the resistance of heat exchanger more easily to make the air input increase, thereby increased the amount of wind of indoor set, promoted refrigerating output/heating capacity, finally promoted complete machine efficiency.

further, the utility model discloses an among the suspension type air conditioning indoor set, make booster fan be the duct fan, the wind-guiding directionality of duct fan is better, does benefit to inside the more direct vertical entering casing smoothly of room air to the operating efficiency of main fan has been promoted.

further, the utility model discloses a machine adopts laminar flow fan in suspension type air conditioning, and makes the interval between two adjacent ring plate pieces by supreme crescent down, can effectively promote laminar flow fan's the amount of wind for laminar flow fan's air-out satisfies user's user demand. In addition, laminar flow fan realizes the laminar flow air supply through the viscidity effect, reduces traditional main fan and can satisfy the requirement of the amount of wind even can not increase the blade to the use of blade, and air supply process small in noise, amount of wind are high, effectively promote user's use and experience.

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 side view of a ceiling type air conditioner indoor unit according to an embodiment of the present invention;

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

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a schematic side view of the ducted fan of FIG. 3;

FIG. 5 is a schematic bottom view of the ducted fan shown in FIG. 4;

Fig. 6 is a schematic view of the overall structure of a laminar flow fan according to an embodiment of the present invention;

FIG. 7 is a schematic view of the laminar flow fan of FIG. 6 from another perspective;

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

Fig. 9 is a schematic diagram of an air supply principle of a laminar flow fan according to an embodiment of the present invention;

Fig. 10 is a velocity profile and force profile of a laminar flow fan according to an embodiment of the present invention;

Fig. 11 is a schematic air circulation diagram of a laminar flow fan according to an embodiment of the present invention;

Fig. 12 is a schematic diagram illustrating a relationship between gradual pitch change of a plurality of annular disks and air volume and air pressure of a laminar flow fan according to an embodiment of the present invention;

Fig. 13 is a schematic diagram illustrating a relationship between a motor rotation speed and an air volume and an air pressure of a laminar flow fan according to an embodiment of the present invention.

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 13. Where the orientations or positional relationships indicated by the terms "front", "back", "upper", "lower", "top", "bottom", "inner", "outer", "lateral", etc., are based on the orientations or positional relationships shown in the drawings, they are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

The indoor unit of ceiling type air conditioner of the embodiment 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.

Fig. 1 is a schematic side view of a ceiling type air conditioner indoor unit according to an embodiment of the present invention; fig. 2 is a schematic bottom view of the ceiling type air conditioner indoor unit shown in fig. 1; fig. 3 is a sectional view a-a of fig. 1.

as shown in fig. 1 to 3, a ceiling type air conditioner indoor unit according to an embodiment of the present invention may generally include a casing 100, a heat exchanger 400, a main fan 300, and a booster fan 200.

The ceiling type indoor unit of the air conditioner is integrally installed under the roof of an indoor room, the top of the casing 100 is fixed to the roof, and the rest of the indoor unit of the air conditioner is exposed under the roof. The roof is illustrated with dashed lines with reference to fig. 1. The housing 100 has an air inlet 110 at the bottom and at least one air blowing opening 120 at the side. The number of the blowing ports 120 may be one or more. For example, if the air conditioning indoor unit is installed on a roof near a side wall, only one air supply opening may be provided. If the installation position of this air conditioning indoor set is far away from the side wall, if set up in roof central authorities, can set up a plurality of air supply outlets towards the diverse such as 3, 4 to realize multi-angle air supply, as shown in fig. 2, casing 100 is square structure, arranges four air supply outlets 120 along casing 100 circumference, in order to realize the air supply of four directions. Of course, more air supply ports 120 may be arranged along the circumferential direction of the casing 100 to supply air in more directions. Even, the casing can be circular, and the air supply outlets are formed in the circumferential full angle of the casing for air outlet, so that 360-degree all-directional air supply is realized. In addition, because of the higher mounted position of the indoor unit of the ceiling type air conditioner, the air-out coverage range is also very large, the refrigerating/heating speed is favorably improved, and the user feels more comfortable.

As shown in fig. 1 to 3, a wind deflector 121 may be disposed at each of the blowing ports 120, and the wind deflector 121 may be rotatably installed to the casing 100 with a rotation axis extending in a horizontal direction so as to rotatably open and close the blowing ports 120. The air deflector 121 can also be rotated to different positions to adjust the air supply angle of the air supply outlet 120, so as to further expand the air supply range.

Disposed within the housing 100 is a heat exchanger 400, which may be an evaporator of a vapor compression refrigeration cycle. When the air conditioner is turned on, indoor air enters the casing 100 from the air inlet 110, flows through the heat exchanger 400, exchanges heat with the heat exchanger 400 to become heat-exchange air (the heat-exchange air is cold air during cooling, and the heat-exchange air is hot air during heating), and the heat-exchange air is blown back to the indoor space from the air supply outlet 120 to realize indoor cooling/heating.

A main fan 300 is disposed in the housing 100 for providing power to the above-described air flow process. The main fan 300 may be a laminar flow fan having an axis extending in a vertical direction (i.e., up and down direction) so as to supply air from below and discharge air laterally. The structure of the laminar flow fan will be described in detail later.

in addition, the main fan may be a centrifugal fan, and specifically, may be a backward centrifugal fan.

The heat exchanger 400 is disposed between the main fan 300 and the supply outlet 120, and surrounds the main fan 300, so that the airflow passes through the surface of the heat exchanger 400 more, and the heat exchange efficiency is improved.

The booster fan 200 is disposed at the air inlet 110, and is configured to promote indoor air to flow to the air inlet 110, so as to increase an air volume of the air conditioner indoor unit, increase an operation efficiency of the main fan 300, increase a cooling capacity/a heating capacity, and finally increase a whole efficiency of the air conditioner. The booster fan 200 may be disposed inside the casing 100, such that the air inlet 110 is located below the booster fan 200, thereby preventing the air conditioner indoor unit from being affected by the air inlet, and the air conditioner indoor unit is closer to the main fan 300, thereby improving the boosting effect.

In some embodiments, booster fan 200 may be a ducted fan with an axis extending in a vertical direction.

FIG. 4 is a schematic side view of the ducted fan of FIG. 3; fig. 5 is a schematic bottom view of the ducted fan shown in fig. 4. As shown in fig. 3 to 5, the ducted fan includes one duct 210. When the ducted fan is operated, its fan blades 220 rotate, while the ducted fan 210 does not rotate. The ducted fan has a better wind guiding directivity, and is advantageous in that indoor air more directly and smoothly vertically enters the inside of the casing 100, thereby more facilitating the improvement of the operation efficiency of the main fan 300.

As shown in fig. 3, the duct 210 of the ducted fan can be sealed and attached to the edge of the air inlet 110, so as to achieve sealing, so that wind can only enter the housing 100 from the inside of the ducted fan, and influence on the efficiency of the ducted fan due to wind entering from other parts is avoided. In addition, the bottom appearance of the indoor unit of the air conditioner is more regular due to the arrangement.

Of course, in some alternative embodiments, the booster fan is also an axial fan whose axis extends in the vertical direction, and the specific installation manner is not described in detail.

As mentioned above, the main fan may be a centrifugal fan or a laminar flow fan. However, the centrifugal fan generally requires several tens of large-sized blades to increase wind pressure and wind volume, and the blades rotate to rub or impact air when the centrifugal fan is operated. The centrifugal fan has wide blades and a large thickness, and thus generates very large noise when the motor is operated at high speed.

Therefore, the main fan 300 is preferably a laminar flow fan, so that the use of the traditional main fan on the blades is reduced, even the requirement of the air volume can be met without increasing the blades, the noise in the air supply process is low, the air volume is high, and the use experience of a user is effectively improved.

Fig. 6 is a schematic view of the overall structure of a laminar flow fan according to an embodiment of the present invention; FIG. 7 is a schematic view of the laminar flow fan of FIG. 6 from another perspective; fig. 8 is a schematic view of the laminar flow fan shown in fig. 7 from another perspective.

as shown in fig. 6 to 8, the laminar flow fan of the present embodiment may generally include a plurality of annular disks 10 and a motor 20. Wherein, a plurality of annular disc 10 parallel interval sets up and mutual fixed connection, axis all extend and collineation along vertical direction. The motor 20 is used for driving the plurality of annular discs 10 to rotate, so that an air boundary layer close to 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. The air boundary layer 13 is a very thin layer of air adjacent to the surface of each disk. The air supply process of the laminar flow fan is low in noise and high in air quantity, and the use experience of a user is effectively improved.

Further, the distance between two adjacent annular disks 10 can be gradually increased from bottom to top. The inventor finds that the air volume of the laminar flow fan can be effectively improved as the distance between two adjacent annular disks 10 is gradually increased from bottom to top through a plurality of experiments. In some embodiments, the distance between two adjacent annular disks 10 varies by the same amount, that is, the distance between two adjacent annular disks 10 increases from bottom to top by the same value. For example, the distances between two adjacent annular disks 10 in the 8 annular disks 10 may be sequentially set from bottom to top as follows: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, and the distance between two adjacent annular disks 10 is increased by 1mm from bottom to top. It should be noted that the specific values of the variation of the spacing between two adjacent annular disks 10 are only examples, and are not limitations of the present invention.

Considering that the thickness of the laminar flow fan cannot be too large, the number of the annular disks 10, the distance between two adjacent annular disks 10, and the thickness of the annular disks 10 need to be correspondingly constrained. In addition, the volume occupied by the laminar flow fan cannot be too large, and the outer diameter of the annular disk 10 needs to be correspondingly restricted. It should be noted that the outer diameter of the annular disk 10 refers to the radius of the outer circumference of the annular disk 10, and the inner diameter of the annular disk 10 refers to the radius of the inner circumference of the annular disk 10.

The laminar flow fan may also include a single circular disk 30 and a connecting rod 40. The circular disks 30 may be disposed above the plurality of annular disks 10 in parallel at intervals, and the motor 20 is disposed below the circular disks 30 and fixed to the housing 100. Tie rods 40 may extend through circular disk 30 and plurality of annular disks 10 to connect plurality of annular disks 10 to circular disk 30. The motor 20 is also configured to directly drive the circular disk 30 to rotate, and thus the circular disk 30 rotates the plurality of annular disks 10. That is, the motor 20 configured to rotate the plurality of annular discs 10 is dependent on the motor 20 first rotating the circular discs 30 and then rotating the plurality of annular discs 10 by the circular discs 30. In a specific embodiment, the radius of the circular disk 30 is the same as the outer diameter of the plurality of annular disks 10, and may be set to be 170mm to 180mm, so as to restrict the occupied volume in the lateral direction of the laminar flow fan.

In some embodiments, the connecting rods 40 are multiple and are uniformly spaced throughout the edges of the circular disks 30 and the plurality of annular disks 10. The connecting rods 40 uniformly penetrate through the edges of the circular disk 30 and the annular disks 10 at intervals, so that the connection relationship between the circular disk 30 and the annular disks 10 is stable, and further, when the motor 20 drives the circular disk 30 to rotate, the circular disk 30 can stably drive the annular disks 10 to rotate, and the working reliability of the laminar flow fan is improved.

Fig. 9 is a schematic diagram of an air supply principle of a laminar flow fan according to an embodiment of the present invention; fig. 10 is a velocity profile and force profile of a laminar flow fan according to an embodiment of the present invention.

as shown in fig. 9 and 10, 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'. In the laminar flow fan of this embodiment, the motor 20 drives the circular disk 30, the circular disk drives the plurality of annular disks 10 to rotate at a high speed, and the air in the intervals of the annular disks contacts and moves with each other, so that the air boundary layer 13 near the surfaces of the annular disks is driven by the rotating annular disks to rotate from inside to outside under the action of the viscous shear force τ to form laminar flow wind.

FIG. 10 is a graph showing the distribution τ (y) of the viscous shear force and the distribution u (y) of the velocity to which the boundary layer 13 of air is subjected. The viscous shear forces experienced by the air boundary layer 13 are actually the drag forces that the individual disks create against the air boundary layer 13. The axis of abscissa in fig. 10 refers to the distance in the moving direction of the air boundary layer 13, and the axis of ordinate refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. ve is the airflow velocity at each point within air boundary layer 13, δ is the thickness of air boundary layer 13, and τ w is the viscous shear force at the surface of annular disk 10. The variable y in τ (y) and u (y) refers to the height of the cross-section of the boundary layer 13 in the direction perpendicular to the direction of movement, and L is the distance between a point on the inner circumference of the annular disk 10 and a point on the surface of the annular disk 10.τ (y) is the distribution of viscous shear forces experienced at this distance L at a cross-sectional height y of the boundary layer 13 of air; u (y) is the velocity profile at this distance L for a cross-section of the air boundary layer 13 having a height y.

Fig. 11 is an air circulation schematic diagram of a laminar flow fan according to an embodiment of the present invention.

As shown in fig. 6 to 8 and 11, an air inlet channel 11 is formed at the center of the plurality of annular disks 10 to allow air outside the laminar flow fan to enter. A plurality of air outlets 12 are formed in gaps between the plurality of annular disks 10 to allow laminar air to be blown out. 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 12 is higher than that of the laminar wind entering the air inlet channel 11. In the plurality of annular disks 10 of the present embodiment, the distance between every two adjacent annular disks 10 gradually increases from bottom to top, that is, the plurality of annular disks 10 are arranged in parallel at different intervals. The air outlets 12 formed by the gaps among the annular disks 10 can enable the laminar flow fan to uniformly supply air for 360 degrees, various uncomfortable symptoms caused by direct blowing of air supplied by an air conditioner are avoided for a user, and the use experience of the user is further improved. The distance between two adjacent annular disks 10 described above gradually increases from bottom to top, which means that the distance between two adjacent annular disks 10 gradually increases along the direction of the airflow flowing in the air inlet channel 11.

the plurality of annular disks 10 may each be planar disks and in a preferred embodiment, the lower surface of the circular disk 30 has an inverted conical protrusion 31 to direct the air flow entering the laminar flow fan and assist in forming laminar air flow. The upper surface of circular disk 30 may be a plane, and circular disk 30 mainly functions to fixedly receive motor 20 and is connected to a plurality of annular disks 10 through connecting rod 40, so as to drive a plurality of annular disks 10 to rotate when motor 20 drives circular disk 30 to rotate. The inverted cone-shaped protrusion 31 on the lower surface of the circular disk 30 can effectively guide the air entering the laminar flow fan through the air inlet channel to enter the gap between the annular disks, thereby improving the efficiency of forming laminar flow air.

Fig. 12 is a schematic diagram illustrating a relationship between a gradual change of a pitch of a plurality of annular disks 10 of an annular disk 10 of a laminar flow fan and an air volume and an air pressure according to an embodiment of the present invention. The abscissa axis shading 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 air outlet 12 of the laminar flow fan and the inlet of the air inlet channel 11. 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. As shown in fig. 12, when all the above mentioned parameters are kept unchanged, the distance between every two adjacent annular disks 10 in the plurality of 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 bottom to top, 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 bottom to top; when the variation of the spacing between two adjacent annular disks 10 along the direction from bottom to top, which is represented by the abscissa axis, is a negative number, it indicates that the spacing between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually decreases from bottom to top. 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 bottom to top. In an embodiment, the outer diameter of the ring disk 10 of the laminar flow fan 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 flow fan are considered comprehensively, and the distance between two adjacent ring disks 10 in the 8 ring disks 10 can be set sequentially from bottom to top: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, namely, the distance between two adjacent annular disks 10 increases by 1mm from bottom to top. It should be noted that, the distance between two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from bottom to top, which means that the distance between two adjacent annular disks 10 gradually increases along the direction of the airflow flowing in the air inlet channel 11.

Fig. 13 is a schematic diagram illustrating the relationship between the rotation speed of the motor 20 of the laminar flow fan and the air volume and the air pressure according to an embodiment of the present invention. Wherein the abscissa axis Speed of revolution refers to the rotational Speed of the motor 20, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 13 is a schematic diagram illustrating the relationship between the rotation speed of the motor 20 and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the distance, and the thickness of the ring-shaped disk 10 of the laminar flow fan are all kept constant. As shown in fig. 13, when the above-mentioned parameters are kept constant, the air volume increases substantially linearly with the increase of the rotation speed of the motor 20, but the increase rate tends to be slow, and the increase of the air pressure is substantially unchanged. That is, for the same laminar flow fan, the air volume increases approximately linearly as the rotation speed of the motor 20 increases. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan is 175mm, the inner diameter of the annular disk 10 is 115mm, the number of the annular disks 10 is 8, and the distance between two adjacent annular disks 10 is sequentially set from bottom to top: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75mm, when the thickness of the annular disc 10 is 2mm, the linear relation between the rotating speed of the motor 20 and the air volume of the laminar flow fan is more obvious.

Since the rotation speed of the motor 20 and the air volume of the laminar flow fan are approximately linear, in a preferred embodiment, the motor 20 may be further configured to: the rotating speed of the motor 20 is determined according to the acquired target air volume of the laminar flow fan. That is, the target air volume of the laminar flow fan may be first obtained, and then the rotation speed of the motor 20 may be determined according to a linear relationship between the target air volume and the rotation speed of the motor 20. The target air volume may be obtained by an input operation of the user.

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 top of the shell is used for being fixed on a roof, the bottom of the shell is provided with an air inlet, and the side of the shell is provided with at least one air supply outlet;

A heat exchanger disposed within the housing;

The main fan is arranged in the shell and used for promoting indoor air to enter the shell from the air inlet, exchange heat with the heat exchanger and then flow to the air supply outlet; and

and the booster fan is arranged at the air inlet and used for promoting indoor air to flow to the air inlet so as to improve the air inlet amount of the air inlet.

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

The supercharging fan is a ducted fan with an axis extending along the vertical direction, and a duct of the ducted fan is hermetically attached to the edge of the air inlet.

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

the booster fan is an axial flow fan with an axis extending in the vertical direction.

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

The booster fan is arranged on the inner side of the shell, and the air inlet is located below the booster fan.

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

the number of the at least one air supply opening is multiple, and the multiple air supply openings are used for supplying air towards different directions respectively.

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

And each air supply opening is provided with an air deflector which is rotatably arranged on the shell and used for opening and closing the air supply opening or rotatably adjusting the air supply angle of the air supply opening.

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

the main fan is a laminar flow fan, which includes:

the annular disks are arranged in parallel at intervals and fixedly connected with each other, and the axes of the annular disks extend along the vertical direction and are collinear; and

and the motor is used for driving the plurality of annular discs to rotate, so that an air boundary layer close to the surfaces of the plurality of annular discs is driven by the plurality of annular discs to rotate and move from inside to outside due to a viscous effect to form laminar wind.

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

For the plurality of annular disks, the distance between two adjacent annular disks is gradually increased from bottom to top.

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

The main fan is a centrifugal fan with an axis extending in the vertical direction.

10. the indoor unit of a ceiling type air conditioner as set forth in claim 8 or 9,

The heat exchanger is arranged between the main fan and the air supply outlet and surrounds the main fan.