Ceiling unit with air outlet

Abstract

The present invention provides a ceiling unit with an air outlet, which includes a main body frame, and an air outlet duct is arranged inside the main body frame; an air outlet assembly, which is arranged on the main body frame in a liftable manner, and the air outlet assembly has a working position where an air outlet is formed with the main body frame, and the air outlet is communicated with the air outlet duct; the ratio range of the flow area S1 of the air outlet to the minimum flow area S2 of the air outlet duct is 0.7 ≤ S1 / S2 ≤ 1.27. The ceiling unit provided by the present invention defines the relationship between the height of the air outlet and the minimum flow area of the air outlet duct, and gives the design standard of the ceiling unit to balance the air supply distance of the ceiling unit and the attenuation of the air outlet volume, ensure the air outlet effect of the manufactured ceiling unit, and thus reduce the design difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of air handling equipment, and particularly to a ceiling unit with an air outlet. Background Art

[0002] Currently, the air outlet assembly of the ceiling unit in the prior art is a liftable structure, and the main frame is fixedly arranged on the circumferential outer side of the air outlet assembly. When the ceiling unit is working, the air outlet assembly descends a certain height and forms a height difference with the main frame. The air outlet assembly and the main frame arranged outside the air outlet assembly form an air outlet, and the fan blows air from the inside of the ceiling unit and exits through the air outlet. When the air conditioner is in the cooling mode, it is necessary to make the air outlet as parallel to the horizontal plane as possible to increase the air supply distance, so as to achieve the purpose of waterfall cooling and improve the comfort of users. However, the size of the air outlet of the ceiling unit in the prior art is only designed by the experience of designers, and the design is unreasonable, resulting in a poor air outlet effect of the ceiling unit. Summary of the Invention

[0003] In order to solve the technical problem of poor air outlet effect of the ceiling unit in the prior art, a ceiling unit with an air outlet is provided, which limits the size of the air outlet of the ceiling unit to ensure the air outlet effect.

[0004] To this end, the present application provides a ceiling unit, including:

[0005] A main frame, in which an air outlet duct is arranged, and the air outlet duct has a first end and a second end;

[0006] An air outlet assembly, which is liftably arranged on the main frame, and the air outlet assembly forms an air outlet with the main frame by descending, and the air outlet is communicated with the second end of the air outlet duct;

[0007] The ratio range of the flow area S1 of the air outlet 10 to the minimum flow area S2 of the air outlet duct 2 is 0.7 ≤ S1 / S2 ≤ 1.27.

[0008] The air outlet duct has a second end communicated with the air outlet and a first end far from the air outlet, and the air outlet duct forms the minimum flow area of the air outlet duct at the first end.

[0009] The air outlet assembly includes a rotatable air deflector, and the air deflector and the main frame form the air outlet.

[0010] The ceiling unit further includes a rotating mechanism, the rotating mechanism is arranged on the air outlet assembly, and the air deflector is arranged on the rotating mechanism.

[0011] The rotating mechanism includes a rotating arm, one end of the rotating arm is hinged to the air outlet assembly, and the other end of the rotating arm is arranged on the air deflector.

[0012] The rotating mechanism further includes a driving member, the driving member is arranged on the air outlet assembly, and the driving member is drivingly connected to the rotating arm.

[0013] The air outlet assembly has a closed position for cooperating with the main body frame to close the air outlet. The air deflector has a first edge and a second edge. When the air outlet assembly is in the closed position, the first edge is hermetically arranged at the corresponding position of the main body frame, and the second edge is hermetically arranged at the corresponding edge of the air outlet assembly.

[0014] A sealing structure is arranged between the second edge and the air outlet assembly.

[0015] The ceiling unit further includes a lifting mechanism, the lifting mechanism is arranged on the main body frame, and the air outlet assembly is arranged on the lifting mechanism.

[0016] The air outlet assembly includes an air outlet frame, an air outlet is formed between the air outlet frame and the main body frame, and the air outlet frame is lifted independently.

[0017] The air outlet assembly includes an air outlet frame and a return air panel, an air outlet is formed between the air outlet frame and the main body frame, the return air panel is provided with a return air opening, and the air outlet frame is connected to the return air panel and lifted together.

[0018] At least one second air outlet is formed on the air outlet assembly, and the second air outlet is communicated with the second end of the air outlet duct.

[0019] The ceiling unit further includes an air deflector, the air deflector is rotatably arranged at the second air outlet, and the air deflector can close or open the second air outlet.

[0020] The ceiling unit with an air outlet provided by the present invention defines the relationship between the height of the air outlet and the minimum flow area of the air outlet duct, gives the design standard of the ceiling unit, balances the air supply distance of the ceiling unit and the attenuation of the air outlet air volume, ensures the air outlet effect of the manufactured ceiling unit, and thus reduces the design difficulty. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the ceiling unit provided by the embodiment of the present invention;

[0022] Figure 2 It is another schematic structural diagram of the ceiling unit provided by the embodiment of the present invention;

[0023] Figure 3A cross-sectional view of the ceiling unit provided by an embodiment of the present invention;

[0024] In the figure:

[0025] 1. Main body frame; 2. Air outlet duct; 3. Air outlet assembly; 4. Air deflector; 21. First end; 22. Second end; 13. Second air outlet; 14. Air supply duct; 15. Frame. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] For the ceiling unit in the prior art, there is the following relationship between the air supply distance and the air outlet volume: when the air supply distance is far, the attenuation of the air outlet volume is large, and when the air supply distance is near, the attenuation of the air outlet volume is small. Regarding the problem of large attenuation of the air outlet volume when the ceiling unit requires a long air supply distance, in the prior art, generally, the relevant parameters of the fan (the diameter and speed of the fan) are simply increased to ensure the air outlet volume, resulting in an increase in the overall size or cost of the ceiling unit. However, after the applicant's research on the air outlet airflow of the ceiling unit and analysis of the simulation experimental data, it is found that the technical solution of increasing the relevant parameters of the fan actually has more disadvantages than advantages and is not conducive to the further development of the industry. Instead, the relationship between the height of the air outlet and the minimum flow area of the air outlet duct, which has been ignored and overlooked in the art, is actually an improvement point that can effectively improve the matching degree of the air supply distance and the air outlet volume of the ceiling unit.

[0028] Therefore, in order to ensure that the air supply distance and the air outlet volume of the ceiling unit reach the optimal level as much as possible, the present application provides a ceiling unit with an air outlet as shown in Figure 1 Figure 19, including: a main body frame 1, an air outlet duct 2 is arranged in the main body frame 1, and the air outlet duct 2 has a first end 21 and a second end 22; an air outlet assembly 3, the air outlet assembly 3 is arranged on the main body frame 1 in a liftable manner, and the air outlet assembly 3 forms an air outlet 10 with the main body frame 1 through descending, and the air outlet 10 is communicated with the air outlet duct 2; the ratio range of the flow area S1 of the air outlet 10 to the flow area S2 of the first end 21 is 0.7 ≤ S1 / S2 ≤ 1.27.

[0029] It should be noted that the main frame 1 is the main load-bearing structure of the ceiling-mounted air conditioner. When installing the ceiling-mounted air conditioner, the main frame 1 is used to be installed on the ceiling, and other structures can be directly or indirectly installed on the main frame 1 and fixed on the ceiling through the main frame 1. The ceiling-mounted air conditioner has an indoor unit part installed inside the ceiling. The main frame 1 is connected to the indoor unit, and the air outlet assembly 3 is connected to the main frame 1. The indoor unit has an indoor unit air outlet. The first end 21 of the air outlet duct 2 of the main frame 1 is communicated with the indoor unit air outlet. The air flow path is: return air inlet - evaporator - indoor unit air outlet - the first end 21 of the air outlet duct 2 - the second end 22 of the air outlet duct 2 - blown out from the air outlet.

[0030] Preferably, the flow area S2 of the first end 21 of the air outlet duct 2 is a fixed value, and the perimeter of the air outlet assembly 3 is also a fixed value. As the descending height of the air outlet assembly 3 changes, the height h1 of the air outlet 10 also gradually changes. At this time, the flow area S1 of the air outlet 10 is the product of the height h1 of the air outlet 10 and the perimeter of the part of the air outlet assembly 3 used to form the air outlet 10. That is, as the height h1 of the air outlet 10 changes, the flow area S1 of the air outlet also changes synchronously. The height h1 of the air outlet 10 refers to the height between the edge of the lowest point of the air outlet duct 2 formed by the main frame 1 and the outermost edge of the air outlet assembly 3 in the lifting direction of the air outlet assembly 3. When the structure of the air outlet assembly 3 used to form the air outlet 10 with the main frame 1 is a horizontal structure, the height h1 of the air outlet 10 can also be expressed as the descending height of the air outlet assembly 3.

[0031] Taking the experimental data of a 3-horsepower unit as an example, adjust the value of S1 / S2 for simulation. The simulation results are as follows:

[0032] S1 / S2 <![CDATA[Air volume (m 3 / h)]]> Air supply distance 0.53 667 3.3m 0.7 834 3.5m 0.98 1112 3.5m 1.27 1112 2m 1.58 1112 1.2m

[0033] It can be known from the simulation results that when S1 / S2 is 0.98, the air volume reaches the maximum value, and the air supply distance also reaches the maximum value; when S1 / S2 increases to 1.27, although the air volume remains at the maximum value, the air supply distance begins to decrease; when S1 / S2 continues to increase to 1.58, the air volume still remains at the maximum value, but the air supply distance seriously decays; when S1 / S2 decreases to 0.7, although the air supply distance remains at the maximum value, the air volume begins to decrease; when S1 / S2 continues to decrease to 0.53, the air volume further decreases, and the air supply distance also begins to decrease. That is, only when S1 / S2 is within the range of 0.7 to 1.27, both the air volume and the air supply distance can be guaranteed. When S1 / S2 is too large, the air supply distance is too small. When S1 / S2 is too small, the air volume is too small.

[0034] The air outlet assembly 3 includes a rotatable air deflector 4, and the air deflector 4 and the main body frame 1 form the air outlet 10. During the rotation of the air deflector 4, the height h1 of the air outlet 10 can be adjusted. At this time, the height h1 of the air outlet 10 refers to the height between the edge of the lowest point of the air outlet duct 2 formed by the main body frame 1 and the outermost edge of the air deflector 4 in the lifting direction of the air outlet assembly 3.

[0035] The ceiling machine further includes a rotating mechanism, the rotating mechanism is arranged on the air outlet assembly 3, and the air deflector 4 is arranged on the rotating mechanism.

[0036] The rotating mechanism includes a rotating arm, one end of the rotating arm is hinged to the air outlet assembly 33, and the other end of the rotating arm is arranged on the air deflector 4. Preferably, a rotating arm is arranged at both ends in the length direction of the air deflector 4 to ensure the synchronism of the overall movement of the air deflector 44.

[0037] The rotating mechanism further includes a driving member, the driving member is arranged on the air outlet assembly 3, and the driving member is drivingly connected to the rotating arm. One end of the rotating arm is arranged on the driving member, and the air deflector 4 is arranged on the other end of the rotating arm. When the rotating arm rotates with the end arranged on the driving member, the air deflector 4 can move together with the end of the rotating arm, so as to realize the rotation of the air deflector 4. The driving member can be a stepper motor.

[0038] The air outlet assembly 3 has a closed position for cooperating with the main body frame 1 to close the air outlet 10. The air deflector 4 has a first edge 41 and a second edge 42. When the air outlet assembly 3 is in the closed position, the first edge 41 is hermetically arranged at the corresponding position of the main body frame 1, and the second edge 42 is hermetically arranged at the corresponding edge of the air outlet assembly 3.

[0039] A sealing structure is arranged between the second edge 42 and the air outlet assembly 3.

[0040] The ceiling machine further includes a lifting mechanism, the lifting mechanism is arranged on the main body frame 1, and the air outlet assembly 3 is arranged on the lifting mechanism. Through the lifting mechanism, the air outlet assembly 3 can extend out of or retract into the main body frame 1, so that the air outlet assembly 3 can move freely between the working position and the closed position.

[0041] The air outlet assembly 3 includes an air outlet frame, an air outlet 10 is formed between the air outlet frame and the main body frame 1, and the air outlet frame is lifted independently. In other embodiments not shown, the air outlet assembly 3 includes an air outlet frame and a return air panel, an air outlet 10 is formed between the air outlet frame and the main body frame 1, the return air panel is provided with a return air opening, and the air outlet frame is connected to the return air panel and lifted together.

[0042] As Figure 2And Figure 3 Another embodiment of the ceiling unit is provided as shown. At least one second air outlet 13 is formed on the air outlet assembly 3, and the second air outlet 13 communicates with the second end 22 of the air outlet duct 2. The provision of the second air outlet 13 enables the ceiling unit to meet the requirements of downward inclined air outlet or even vertical downward air outlet. Moreover, through the cooperation of the air outlet 10 and the second air outlet 13, the air outlet modes of the ceiling unit can be increased, thereby enhancing the air outlet effect of the ceiling unit and the accuracy and rate of temperature adjustment.

[0043] When the air outlet assembly 3 forms the air outlet 10 with the main body frame 1 by descending, a spacing is formed between the air outlet assembly 3 and the main body frame 1. The spacing forms a air supply duct 14. One end of the air supply duct 14 communicates with the air outlet duct 2, and the other end of the air supply duct 14 forms the air outlet 10. The air flow in the air outlet duct 2 is blown out from the air outlet 10 after being guided by the air supply duct 14. The air supply duct 14 guides the vertically downward air flow in the air outlet duct 2 to blow out in a direction substantially away from the ceiling unit horizontally or even upwardly inclined relative to the horizontal plane, thereby realizing the horizontal air outlet of the ceiling unit.

[0044] In the prior art, the ceiling units all adopt the method of forming air outlets on the surface facing the ground. In order to change the air outlet direction, a wind deflector is provided at the air outlet for air guiding. However, on the installation plane of the ceiling unit, the projection of the wind deflector does not coincide with the projection of the panel of the ceiling unit, resulting in poor air guiding effect of the wind deflector and ultimately reducing the air supply distance of the ceiling unit. Therefore, the main body frame 1 of the present application further includes a frame 15. When the air outlet assembly 3 forms the air outlet 10 with the main body frame 1 by descending, the air supply duct 14 is formed between the air outlet assembly 3 and the frame 15. On the installation plane (such as the ceiling) of the main body frame 1, the projection of the air outlet assembly 3 and the projection of the frame 15 at least partially coincide. When the projection of the air outlet assembly 3 and the projection of the frame 15 partially coincide, compared with the prior art, the air outlet assembly is substantially extended, resulting in good flat blowing effect and increased air supply distance of the ceiling unit. When the air outlet 10 of the ceiling unit is opened, the air outlet assembly 3 gradually moves away from the main body frame 1 to form the air supply duct 14. At this time, the corresponding part of the air outlet assembly 3 forms the lower side surface of the air supply duct 14. When the air flow passes through the air supply duct 14, under the guiding action of the lower side surface of the air supply duct, the air flow flows horizontally or even blows out in an upwardly inclined direction, increasing the air supply distance of the ceiling unit and thus realizing the effect of horizontal air outlet.

[0045] As another implementation manner, the projection of the air outlet assembly 3 completely coincides with the projection of the frame 15. In this case, compared with the case where the projection of the air outlet assembly 3 partially coincides with the projection of the frame 15, the air outlet assembly can be further extended, so that the flat blowing effect of the ceiling unit is better and the air supply distance is further increased. At the same time, when the ceiling unit is in the shutdown state, the air outlet assembly 3 is attached to the main body frame 1, and the corresponding part of the air outlet assembly 3 is attached to the frame 15. When a person observes the ceiling unit from the ground, only the air outlet assembly 3 can be seen and the main body frame 1 cannot be seen, effectively increasing the aesthetics of the ceiling unit.

[0046] As another implementation manner, the projection of the air outlet assembly 3 extends beyond the projection of the frame 15. In this case, compared with the case where the projection of the air outlet assembly 3 completely coincides with the projection of the frame 15, the air outlet assembly can be further extended, thereby further increasing the flat blowing effect and the air supply distance of the ceiling unit.

[0047] Preferably, the projection of the air outlet assembly 3 exceeds the projection of the main body frame 1, so that the air guiding size of the air outlet assembly 3 is effectively increased compared with the prior art, and the purpose of increasing the air supply distance of the ceiling unit is achieved.

[0048] The ceiling unit further includes a wind deflector 4. The wind deflector 4 is rotatably disposed at the second air outlet 13, and the wind deflector 4 can close or open the second air outlet 13. When it is necessary to open the second air outlet 13, the wind deflector 4 gradually rotates to communicate the second air outlet 13 with the air outlet duct 2, so that the air flow in the air outlet duct 2 can be blown out from the second air outlet 13, and the wind deflector 4 can adjust its tilt angle according to actual needs to adjust the air outlet direction and / or the air outlet volume of the second air outlet 13; when it is necessary to close the second air outlet 13, the wind deflector 4 is reset to a state of being hermetically engaged with the air outlet assembly 3, thereby closing the second air outlet 13. At this time, the air flow in the air outlet duct 2 can only be blown out from the air outlet 10 under the combined guiding action of the air outlet assembly 3 and the wind deflector 4.

[0049] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A ceiling unit with an air outlet, characterized in that: it includes: a main body frame (1), an air outlet duct (2) is arranged inside the main body frame (1), and the air outlet duct (2) has a first end (21) and a second end (22); an air outlet assembly (3), the air outlet assembly (3) is arranged on the main body frame (1) in a liftable manner, and the air outlet assembly (3) forms an air outlet (10) with the main body frame (1) by descending, and the air outlet (10) is communicated with the second end (22) of the air outlet duct (2); the ratio range of the flow area S1 of the air outlet (10) to the flow area S2 of the first end (21) is 0.7 ≤ S1 / S2 ≤ 1.

27.

2. The ceiling unit according to claim 1, characterized in that: the air outlet assembly (3) includes a rotatable air deflector (4), and the air deflector (4) and the main body frame (1) form the air outlet (10).

3. The ceiling unit according to claim 2, characterized in that: the ceiling unit further includes a rotating mechanism, the rotating mechanism is arranged on the air outlet assembly (3), and the air deflector (4) is arranged on the rotating mechanism.

4. The ceiling unit according to claim 3, characterized in that: the rotating mechanism includes a rotating arm, one end of the rotating arm is hinged to the air outlet assembly (3), and the other end of the rotating arm is arranged on the air deflector (4).

5. The ceiling unit according to claim 2, characterized in that: the air outlet assembly (3) has a closed position for cooperating with the main body frame (1) to close the air outlet (10), the air deflector (4) has a first edge (41) and a second edge (42), when the air outlet assembly (3) is in the closed position, the first edge (41) is hermetically arranged with the corresponding position of the main body frame (1), and the second edge (42) is hermetically arranged with the corresponding edge of the air outlet assembly (3).

6. The ceiling unit according to claim 5, characterized in that: a sealing structure is arranged between the second edge (42) and the air outlet assembly (3).

7. The ceiling unit according to claim 1, characterized in that: the ceiling unit further includes a lifting mechanism, the lifting mechanism is arranged on the main body frame (1), and the air outlet assembly (3) is arranged on the lifting mechanism.

8. The ceiling unit according to claim 1, characterized in that: the air outlet assembly (3) includes an air outlet frame, an air outlet is formed between the air outlet frame and the main body frame, and the air outlet frame is lifted independently.

9. The ceiling unit according to claim 1, characterized in that: the air outlet assembly (3) includes an air outlet frame and a return air panel, an air outlet is formed between the air outlet frame and the main body frame, the return air panel is provided with a return air port, and the air outlet frame is connected to the return air panel and lifted together.

10. The ceiling unit according to claim 1, characterized in that: at least one second air outlet (13) is formed on the air outlet assembly (3), and the second air outlet (13) is communicated with the second end (22) of the air outlet duct (2).

11. The ceiling unit according to claim 10, wherein: the ceiling unit further includes a wind deflector (4), the wind deflector (4) is rotatably arranged at the second air outlet (13), and the wind deflector (4) can close or open the second air outlet (13).

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