Ceiling unit

Abstract

The present invention provides a ceiling-mounted air conditioner, comprising a main body frame; an air outlet assembly, which is disposed on the main body frame in a liftable manner, and the air outlet assembly has a working position where it descends to a set height and forms an air outlet with the main body frame. The ceiling-mounted air conditioner provided by the present invention defines the relationship between the height of the air outlet and the target air outlet volume, gives the design standard of the ceiling-mounted air conditioner, to balance the air supply distance of the ceiling-mounted air conditioner and the attenuation of the air outlet volume, and ensure the air outlet effect of the manufactured ceiling-mounted air conditioner. Also, since the relationship between the height of the air outlet and the target air outlet speed is defined, the selection standard of the fan for the ceiling-mounted air conditioner is given, thereby reducing the design difficulty, and at the same time avoiding waste of air volume caused by selecting an oversized fan, and effectively reducing the energy consumption of the ceiling-mounted air conditioner.

Description

Technical Field

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

[0002] Currently, the air outlet assembly of the ceiling machine in the prior art is a liftable structure, and the main body frame is fixedly arranged on the circumferential outer side of the air outlet assembly. When the ceiling machine is working, the air outlet assembly descends a certain height and forms a height difference with the main body frame. The air outlet assembly and the main body frame arranged outside the air outlet assembly form an air outlet, and the fan blows air from the inside of the ceiling machine 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 machine in the prior art is only designed based on the experience of designers, and the design is unreasonable, resulting in a poor air outlet effect of the ceiling machine. Summary of the Invention

[0003] In order to solve the technical problem of poor air outlet effect of the ceiling machine in the prior art, a ceiling machine is provided that defines the relationship between the size of the air outlet of the ceiling machine and the air volume of the air outlet of the ceiling machine to ensure the air outlet effect.

[0004] To this end, the present application provides a ceiling machine, including: a main body frame; an air outlet assembly, the air outlet assembly is liftably arranged on the main body frame, and the air outlet assembly has a working position where it descends to a set height and forms an air outlet with the main body frame; the height h1 of the air outlet ranges from 20 mm ≤ h1 ≤ 36 mm.

[0005] When the height h1 of the air outlet ranges from 20 mm ≤ h1 ≤ 36 mm, the air volume of the air outlet of the ceiling machine is greater than or equal to 75% of the rated air volume of the ceiling machine.

[0006] The air outlet assembly includes a rotatable air deflector, and the air deflector and the main body frame form the air outlet.

[0007] When the ceiling machine is in the cooling mode, the angle range of the angle a between the plane where the air deflector is located and the horizontal plane is -10° ≤ a ≤ 10°, and when a = 0°, the plane where the air deflector is located is parallel to the horizontal plane.

[0008] The ceiling machine 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.

[0009] 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.

[0010] The rotating mechanism further includes a driving member, which is disposed on the air outlet assembly, and the driving member is drivingly connected to the rotating arm.

[0011] The air outlet assembly includes an air outlet frame, the air deflector is rotatably disposed on the air outlet frame, and a stepped sealing structure is provided between the edge of the air deflector and the air outlet frame.

[0012] A first stepped structure is provided on the edge of the air deflector, and a second stepped structure is provided on the air outlet frame. The first stepped structure and the second stepped structure cooperate to form the stepped sealing structure.

[0013] A sealing member is provided between the first stepped structure and the second stepped structure.

[0014] 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 can be lifted and lowered independently.

[0015] 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. The air outlet frame is connected to the return air panel and they are lifted and lowered together.

[0016] The ceiling machine provided by the present invention defines the relationship between the height of the air outlet and the target air outlet volume, gives the design standard of the ceiling machine, to balance the air supply distance of the ceiling machine and the attenuation of the air outlet volume, ensure the air outlet effect of the manufactured ceiling machine. Also, since the relationship between the height of the air outlet and the target air outlet speed is defined, the selection standard of the fan for the ceiling machine is given, thereby reducing the design difficulty, and at the same time avoiding waste of air volume caused by selecting an oversized fan, effectively reducing the energy consumption of the ceiling machine. The air deflector can adjust the height of the air outlet, and the rotation angle of the air deflector is limited by defining the relationship between the angle a and the height of the air outlet, and finally ensure that the air outlet effect of the produced ceiling machine reaches the preset level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the ceiling machine provided by the embodiment of the present invention;

[0018] In the figure:

[0019] 1, main body frame; 3, air outlet assembly; 10, air outlet; 4, air deflector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, 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.

[0021] For the ceiling unit in the prior art, there is the following relationship between the air supply distance and the air volume of the outlet air: when the air supply distance is relatively far, the attenuation of the outlet air volume is relatively large, and when the air supply distance is relatively close, the attenuation of the outlet air volume is relatively small. In view of the problem that the attenuation of the outlet air volume is relatively large when the ceiling unit requires a relatively far air supply distance, in the prior art, generally, the relevant parameters of the fan (the diameter and rotation speed of the fan) are simply increased to ensure the outlet air volume, resulting in an increase in the overall size or cost of the ceiling unit. However, after the applicant studied the outlet air flow of the ceiling unit and analyzed the simulation experimental data, it was 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 target outlet air volume, which has been ignored and neglected in this field, is actually an improvement point that can effectively improve the matching degree between the air supply distance and the outlet air volume of the ceiling unit.

[0022] Therefore, in order to ensure that the air supply distance and the outlet air volume of the ceiling unit reach the optimal level as much as possible, the present application provides a ceiling unit as shown in Figure 1 which includes: a main body frame 1; an air outlet assembly 3, which is arranged on the main body frame 1 in a liftable manner, and the air outlet assembly 3 has a working position where it descends to a set height and forms an air outlet 10 with the main body frame 1; the height h1 of the air outlet 10 ranges from 20 mm ≤ h1 ≤ 36 mm.

[0023] It should be noted that the main body frame 1 is the main load-bearing structure of the ceiling unit. When the ceiling unit is installed, the main body frame 1 is used to be installed on the ceiling, and other structures can be directly or indirectly installed on the main body frame 1 and fixed on the ceiling through the main body frame 1. The height h1 of the air outlet 10 refers to the height between the edge of the lowest point of the air outlet duct formed by the main body 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 for forming the air outlet 10 with the main body frame 1 is a horizontal structure, the height h1 of the air outlet 10 can also be expressed as the height of the descent of the air outlet assembly 3. The rated outlet air volume of the ceiling unit refers to the air volume of the highest wind speed gear in the air supply mode under set conditions (such as set environment of dry bulb temperature, wet bulb temperature, etc.) of the ceiling unit. The ceiling unit has an indoor unit part installed in the ceiling. The main body frame 1 is connected to the indoor unit, the air outlet assembly 3 is connected to the main body frame 1, the indoor unit has an indoor unit air outlet, the first end of the air outlet duct of the main body frame 1 is communicated with the indoor unit air outlet, and the air flow path is: return air inlet - evaporator - indoor unit air outlet - the first end of the air outlet duct - the second end of the air outlet duct - blown out from the air outlet.

[0024] When the height h1 of the air outlet 10 ranges from 20 mm ≤ h1 ≤ 36 mm, the outlet air volume of the ceiling unit is greater than or equal to 75% of the rated outlet air volume of the ceiling unit.

[0025] Taking the experimental data of a 3-horsepower unit as an example, the value of h1 was adjusted for simulation. The simulation results are as follows:

[0026] h1 <![CDATA[Air volume (m 3 / h)]]> Air supply distance 15 667 3.3m 20 834 3.5m 28 1005 3.5m 36 1112 2m 45 1112 1.2m

[0027] It can be seen from the simulation results that when h1 is 28 mm, although the air volume does not reach the maximum value, the air supply distance reaches the maximum value. When h1 increases to 36 mm, the air volume increases to the maximum value, but its air supply distance begins to decrease. When h1 continues to increase to 45 mm, the air volume remains at the maximum value, but the air supply distance is significantly shortened. When h1 decreases to 20 mm, the air supply distance remains at the maximum value, but the air volume begins to decrease. When h1 continues to decrease to 15 mm, the air volume continues to decrease, and at the same time the air supply distance also begins to decrease. That is, when h1 is too large, although the air volume can be maintained, the air supply distance will be severely reduced, resulting in a poor air outlet effect of the ceiling unit. When h1 is too small, the air outlet at this time cannot meet the air volume requirement of the ceiling unit. When h1 is in the range of 20 mm to 36 mm, the ceiling unit reasonably matches the air volume and the air supply distance, and finally ensures the air outlet effect of the ceiling unit. When designing the ceiling unit, set the target air volume of the ceiling unit, and then design the height of the air outlet 10 according to the target air volume, so as to select the optimal height of the air outlet 10, and then the descending stroke of the air outlet assembly 3 and the driving mechanism for driving the lifting of the air outlet assembly 3 can be set, effectively improving the design efficiency and solving the design and manufacturing costs.

[0028] Taking the experimental data of a 3-horsepower unit as an example, the value of h1 was adjusted for simulation. The simulation results are as follows:

[0029]

[0030]

[0031] It can be seen from the simulation results that when h1 is 28 mm, the wind speed reaches the comfortable value of 8.6 m / s. When h1 increases to 36 mm, the wind speed begins to decrease, which will cause the indoor heat exchange effect to decline. When h1 continues to increase to 45 mm, the wind speed continues to decrease, making the wind speed at the air outlet not reach the preset requirement. When h1 decreases to 20 mm, the wind speed begins to increase, which may cause an uncomfortable feeling of the air blowing on people at the air outlet. When h1 continues to decrease to 15 mm, the wind speed continues to increase, exceeding the maximum limit, resulting in the problem of direct blowing. That is, when h1 is too large, the wind speed cannot effectively blow the air flow into the room. When h1 is too small, the wind speed is too large and there is a problem of blowing on people. Only when h1 is in the range of 20 mm to 36 mm, the ceiling unit reasonably matches the wind speed and the air supply distance, and finally ensures the air outlet effect of the ceiling unit.

[0032] The ceiling unit further includes a blower, and the relationship between the rotational speed of the blower and the height h1 of the air outlet 10. That is, at this time, the blower is a variable-frequency blower, and the rotational speed of the blower can be adjusted as needed. In order to ensure that the ceiling unit reaches the target air supply volume, the height h1 of the air outlet 10 and the rotational speed of the blower can be coordinated to effectively reduce the energy consumption and structural complexity of the ceiling unit.

[0033] 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 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.

[0034] When the ceiling unit is in the cooling mode, the angle range of the angle a between the plane of the air deflector 4 and the horizontal plane is -10° ≤ a ≤ 10°, and when a = 0°, the plane of the air deflector 4 is parallel to the horizontal plane.

[0035] Taking the experimental data of a 3-horsepower unit as an example, the value of a is changed for simulation. Taking the plane of the air deflector 4 tilting upward relative to the installation plane of the main body frame 1 (the air deflector tilts upward) as a negative angle and the plane of the air deflector 4 tilting downward relative to the installation plane of the main body frame 1 (the air deflector swings downward) as a positive angle, the simulation results are as follows:

[0036]

[0037]

[0038] It can be seen from the simulation results that when a is 0°, although the air volume does not reach the maximum value, the air supply distance basically reaches the maximum. When a increases to 10°, the air volume reaches the maximum value, but the air supply distance begins to decrease. When h1 continues to increase to 45 mm, the air volume remains at the maximum value without change, but the air supply distance significantly decreases, and it is no longer possible to meet the effect of horizontal air supply for waterfall cooling; when h1 decreases to 20, although the air supply distance does not change, the air volume begins to decrease. When h1 continues to decrease to 15 mm, the air volume continues to decrease, and at the same time, the air supply distance also begins to decrease. That is, when h1 is between 20 mm and 36 mm, the air supply distance and air volume of the ceiling unit can be reliably balanced. When h1 is too large, the air volume will not increase, but the air supply distance will be severely attenuated, affecting the air outlet effect of the ceiling unit. When h1 is too small, the air outlet 10 will cause a certain degree of blockage to the air outlet of the ceiling unit, and at the same time, the air supply distance will also decrease relatively.

[0039] The ceiling unit further includes a rotating mechanism disposed on the air outlet assembly 3, and the air deflector 4 is disposed on the rotating mechanism.

[0040] 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 disposed on the air deflector 4. Preferably, a rotating arm is provided at each of the two ends in the length direction of the air deflector 4, so as to ensure the synchronism of the overall movement of the air deflector 44.

[0041] The rotating mechanism further includes a driving member disposed on the air outlet assembly 3, and the driving member is drivingly connected to the rotating arm. One end of the rotating arm is disposed on the driving member, and the air deflector 4 is disposed on the other end of the rotating arm. When the rotating arm rotates with the end disposed on the driving member, the air deflector 4 can move together with the end of the rotating arm, thereby realizing the rotation of the air deflector 4. The driving member can be a stepper motor.

[0042] The ceiling unit further includes a lifting mechanism disposed on the main body frame 1, and the air outlet assembly 3 is disposed on the lifting mechanism. The air outlet assembly 3 can be extended or retracted into the main body frame 1 through the lifting mechanism, so that the air outlet assembly 3 can move freely between the working position and the closed position.

[0043] 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, and the return air panel is provided with a return air port. The air outlet frame is connected to the return air panel and they are lifted together.

[0044] 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 modifications 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-mounted air conditioner, characterized in that: Comprising: Main body frame (1); 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) has a working position where it descends to a set height and forms an air outlet (10) with the main body frame (1); The height h1 of the air outlet (10) ranges from 20 mm ≤ h1 ≤ 36 mm; When the height h1 of the air outlet (10) ranges from 20 mm ≤ h1 ≤ 36 mm, the air outlet air volume of the ceiling unit is greater than or equal to 75% of the rated air outlet air volume of the ceiling unit.

2. The ceiling unit according to claim 1, wherein: 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: When the ceiling unit is in the cooling mode, the angle a between the plane where the air deflector (4) is located and the horizontal plane ranges from -10° ≤ a ≤ 10°, and when a = 0°, the plane where the air deflector (4) is located is parallel to the horizontal plane.

4. The ceiling unit according to claim 2, wherein: 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.

5. The ceiling unit according to claim 4, 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).

6. The ceiling unit according to claim 5, wherein: 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.

7. The ceiling unit according to claim 2, wherein: The air outlet assembly (3) includes an air outlet frame, the air deflector is rotatably arranged on the air outlet frame, and a stepped sealing structure is arranged between the edge of the air deflector (4) and the air outlet frame.

8. The ceiling unit according to claim 7, characterized in that: A first stepped structure is arranged on the edge of the air deflector (4), a second stepped structure is arranged on the air outlet frame, and the first stepped structure and the second stepped structure cooperate to form the stepped sealing structure.

9. The ceiling unit according to claim 8, characterized in that: A sealing member is arranged between the first stepped structure and the second stepped structure.

10. 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 and lowered independently.

11. 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 opening, and the air outlet frame is connected to the return air panel and lifted and lowered together.

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