Patio machine with heating mode

Abstract

The present invention provides a ceiling machine with a heating mode, comprising a main frame, an air outlet duct provided in the main frame, the air outlet duct having a first end and a second end along the airflow direction; and an air outlet assembly, the air outlet assembly being liftably provided in the main frame. The ceiling machine with a heating mode provided by the present invention balances the air supply distance and the attenuation of the air outlet volume of the ceiling machine in the heating mode by limiting the ratio of the height of the air outlet in the heating mode to the width of the first end of the air outlet duct, that is, providing the design standard of the ceiling machine, thereby ensuring the air outlet effect of the manufactured ceiling machine in the heating mode. Furthermore, since the air guide plate can adjust the height of the air outlet, the size and rotation angle of the air guide plate are limited by limiting the ratio range of the minimum value of the air outlet to the width of the first end of the air outlet duct, thereby ultimately ensuring that the air outlet effect of the produced ceiling machine reaches a preset level.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment equipment, in particular to a skylight unit with a heating mode. Background Art

[0002] A ceiling unit is a type of air conditioner that is embedded in the ceiling to reduce the space it occupies, and uses the air outlets on the surface of the ceiling unit for air discharge and heat exchange. Due to the limitation of the position of the air outlet, it can only discharge air in the set direction and cannot discharge air downward when heating.

[0003] To enable downward airflow in heating mode for rapid heating, existing technologies employ a technique whereby the outlet assembly is designed to be liftable, with a main frame fixedly positioned circumferentially outside the outlet assembly. When the air conditioner is operating, the outlet assembly descends to a certain height, creating a height difference with the main frame. The outlet assembly and the main frame, positioned outside the outlet assembly, form an outlet, and the fan blows air from within the air conditioner through the outlet. When the air conditioner is in heating mode, the air must be directed toward the ground as much as possible to increase heating efficiency, thereby achieving rapid heating and enhancing user comfort.

[0004] However, the lowering height of the air outlet frame of the ceiling unit in the prior art is only designed based on the experience of the designers, and the coordination relationship with the internal structure of the ceiling unit is not taken into consideration. Moreover, when the size of the air outlet formed between the air outlet frame and the main frame is too small, in the heating mode, although the air supply distance is large, the air volume is severely attenuated, resulting in the problem of poor air outlet effect of the ceiling unit. Summary of the Invention

[0005] In order to solve the technical problem of poor air outlet effect of the ceiling fan in the prior art, a ceiling fan with a heating mode is provided, which limits the relationship between the lowering height of the air outlet frame and the air outlet duct in the heating mode to improve the air outlet effect.

[0006] A skylight unit with a heating mode, comprising:

[0007] A main frame, wherein an air outlet duct is provided in the main frame, and the air outlet duct has a first end and a second end along the airflow direction;

[0008] an air outlet assembly, the air outlet assembly being arranged on the main frame, and when the skylight unit is in heating mode, the air outlet assembly and the main frame have a height difference, and an air outlet is formed between the air outlet assembly and the main frame, and the air outlet is communicated with the second end of the air outlet duct;

[0009] The ratio of the height h1 of the air outlet to the width h2 of the first end of the air outlet duct is in the range of 2 / 3≤h1 / h2≤4 / 5.

[0010] The air outlet assembly can be raised and lowered on the main frame, and the air outlet assembly has a working position that is lowered to a set height to form the height difference. When the air outlet assembly is in the working position, the ratio of the height h1 of the air outlet to the width h2 of the first end of the air outlet duct is in the range of 2 / 3≤h1 / h2≤4 / 5.

[0011] The air outlet assembly includes an air guide plate and an air outlet frame. The air outlet frame is arranged on the main frame. The air guide plate is rotatably arranged on the air outlet frame. When the air outlet assembly is in the working position, the air guide plate can adjust the height of the air outlet.

[0012] The air guide plate has a first position where the height h1 of the air outlet reaches a minimum value, and a ratio of the minimum height h1 of the air outlet to the width of the first end of the air outlet duct is in the range of 2 / 3≤h1 / h2≤4 / 5.

[0013] When the ceiling unit is in heating mode, the angle a between the plane where the air guide plate is located and the horizontal plane ranges from 45° to 75°.

[0014] The air outlet assembly has a closed position that cooperates with the main frame to close the air outlet, and the air guide plate has a first edge and a second edge. When the air outlet assembly is in the closed position, the first edge is sealed with the corresponding position of the main frame, and the second edge is sealed with the corresponding edge of the air outlet frame.

[0015] When the air outlet assembly is in the closed position, the air outlet frame and the air guide plate cooperate with the main frame to seal.

[0016] A first step structure is provided on the second edge, and a second step structure matching the first step structure is provided on the air outlet frame. When the air outlet assembly is in the closed position, the first step structure and the second step structure are sealed and matched.

[0017] A sealing member is provided on the first step structure, and when the air outlet assembly is in a closed position, the sealing member is provided between the first step structure and the second step structure.

[0018] The skylight machine further includes a lifting mechanism, which is arranged on the main frame, and the air outlet assembly is arranged on the lifting mechanism.

[0019] The air outlet assembly includes an air outlet frame, an air outlet is formed between the air outlet frame and the main frame, and the air outlet frame is lifted and lowered independently.

[0020] The air outlet assembly includes an air outlet frame and an air return panel. An air outlet is formed between the air outlet frame and the main frame. The air return panel is provided with an air return port. The air outlet frame and the air return panel are connected and rise and fall together.

[0021] At least one second air outlet is provided on the air outlet component, and the second air outlet is communicated with the second end of the air outlet duct.

[0022] The skylight machine further includes an air guide plate, which is rotatably disposed at the second air outlet and can close or open the second air outlet.

[0023] The ceiling machine with a heating mode provided by the present invention provides a design standard for the ceiling machine by limiting the ratio of the height of the air outlet in the heating mode to the width of the first end of the air outlet duct, so as to ensure the air outlet effect of the manufactured ceiling machine in the heating mode, thereby ensuring the heat exchange efficiency of the ceiling machine in the heating mode. Since the air guide plate can adjust the height of the air outlet, the size and rotation angle of the air guide plate are limited by limiting the ratio range of the minimum value of the air outlet to the width of the first end of the air outlet duct, thereby finally ensuring that the air outlet effect of the produced ceiling machine reaches a preset level. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a roof hoist according to an embodiment of the present invention;

[0025] Figure 2 Another structural schematic diagram of a skylight machine according to an embodiment of the present invention;

[0026] Figure 3 A wind field simulation diagram of a roof crane when h1 / h2 is about 0.75 according to an embodiment of the present invention;

[0027] Figure 4 A wind field simulation diagram of a roof crane when h1 / h2 is about 0.8 according to an embodiment of the present invention;

[0028] Figure 5 A wind field simulation diagram of a roof crane when h1 / h2 is about 0.9 according to an embodiment of the present invention;

[0029] Figure 6 A wind field simulation diagram of a roof crane when h1 / h2 is about 0.67 according to an embodiment of the present invention;

[0030] Figure 7 A wind field simulation diagram of a roof crane when h1 / h2 is about 0.6 according to an embodiment of the present invention;

[0031] Figure 8A wind field simulation diagram of a skylight crane with a wind deflector and h1 / h2 of about 0.75 according to an embodiment of the present invention;

[0032] Figure 9 This is a wind field simulation diagram of a skylight crane with a wind deflector and h1 / h2 of about 0.8 according to an embodiment of the present invention;

[0033] Figure 10 This is a wind field simulation diagram of a skylight crane with a wind deflector and h1 / h2 of about 0.9 according to an embodiment of the present invention;

[0034] Figure 11 This is a wind field simulation diagram of a skylight crane with a wind deflector and h1 / h2 of about 0.67 according to an embodiment of the present invention;

[0035] Figure 12 A wind field simulation diagram of a skylight crane with a wind deflector and h1 / h2 of about 0.6 according to an embodiment of the present invention;

[0036] Figure 13 Another structural schematic diagram of a roof crane provided by an embodiment of the present invention;

[0037] Figure 14 A cross-sectional view of a lift machine provided in accordance with an embodiment of the present invention;

[0038] In the picture:

[0039] 1. Main frame; 2. Air outlet duct; 21. First end; 22. Second end; 3. Air outlet assembly; 10. Air outlet; 4. Air guide plate; 41. First edge; 42. Second edge; 5. Rotating arm; 13. Second air outlet; 14. Air supply duct; 15. Frame. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 intended to limit the present invention.

[0041] The ceiling unit is an air handling device installed on the ceiling for indoor heat exchange. During the heat exchange process, it gives priority to exchanging heat with the upper part of the room. During cooling, since cold air is heavier, it can flow from the upper part of the room to the ground of the room to achieve rapid cooling in the room. However, during heating, hot air is lighter and it will float in the upper part of the room and only improve the temperature in the upper part of the room, causing the ceiling unit to mistakenly believe that the temperature in the room has reached the set temperature, thereby affecting the overall heating effect in the room. In the existing technology, it is generally simple to increase the relevant parameters of the fan (fan diameter, speed) to ensure the air volume, and use a larger air volume or a larger air speed to blow the hot air to the ground of the room as much as possible. This solution will cause the overall size of the ceiling unit to increase or the cost to increase. However, after the applicant studied the air flow of the ceiling machine 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. The parameters of the air outlet size and the air duct size inside the ceiling machine, which have been neglected and ignored in this field, are actually the improvement points that can effectively improve the heating efficiency of the ceiling machine.

[0042] Therefore, in order to achieve better heating comfort, the hot air should be blown to the nearby ground first, and then diffused outward along the ground to ensure the heat exchange efficiency of the skylight unit in the heating mode. Figure 1 and Figure 2 The skylight unit with a heating mode shown includes a main frame 1, an air outlet duct 2 is arranged in the main frame 1, and the air outlet duct 2 has a first end 21 and a second end 22 along the air flow direction; an air outlet component 3, the air outlet component 3 is arranged in the main frame 1 in a liftable manner, and the air outlet component 3 has a working position in which it is lowered to a predetermined height and forms an air outlet 10 with the main frame 1, and the air outlet 10 is connected to the second end 22 of the air outlet duct 2; the skylight unit has a heating mode, and when the skylight unit is in the heating mode and when the air outlet component 3 is in the working position, the ratio of the height h1 of the air outlet 10 to the width h2 of the first end 21 of the air outlet duct 2 is in the range of 2 / 3≤h1 / h2≤4 / 5.

[0043] It should be noted that the main frame 1 is the main load-bearing structure of the ceiling machine. When the ceiling machine is installed, the main frame 1 is used to be installed on the ceiling. Other structures can be directly or indirectly installed on the main frame 1 and fixed to the ceiling through the main frame 1. The height h1 of the air outlet 10 refers to the height between the edge of the main frame forming the lowest point of the air outlet duct and the outermost edge of the air outlet assembly in the direction of the height difference between the air outlet assembly and the main frame. The ceiling machine has an internal unit part installed in the ceiling, the main frame 1 is connected to the internal unit, the air outlet assembly 3 is connected to the main frame 1, the internal unit has an internal unit exhaust port, and the first end 21 of the air outlet duct 2 of the main frame 1 is connected to the internal unit exhaust port. The air flow path is: return air port-evaporator-internal unit exhaust port-first end 21 of the air outlet duct 2-second end 22 of the air outlet duct 2-air outlet blown out.

[0044] When the overhead crane is working, the gas flows from the first end 21 of the air outlet duct to the second end 22, and is finally discharged from the overhead crane through the air outlet 10. When designing the overhead crane, in order to ensure the balance between the air supply distance and the air outlet volume of the overhead crane, the designer can determine the specific parameters of the overhead crane based on the ratio range of the height h1 of the air outlet and the width of the first end 21 of the air outlet duct 2, so as to ensure that the air outlet effect of the produced overhead crane meets the preset requirements.

[0045] Taking the experimental data of a 3-HP machine as an example, in this solution, h2 is set to 60mm, and the value of h1 is adjusted for simulation. The simulation results are as follows:

[0046]

[0047]

[0048] From the results, it can be seen that when h1 / h2 is about 0.8, the air volume and hot air landing are both optimal, which is the most ideal ( Figure 3 ); When h1 / h2 continues to increase to more than 0.9, the airflow can only flow downward and cannot diffuse outward, and the effect is not good ( Figure 5 ); When h1 / h2 decreases by 0.75, the air volume does not change, but as can be seen from the figure, the hot air begins to float upward and cannot land well ( Figure 4 ); When h1 / h2 decreases to 0.67, the air volume begins to decrease. Although the air supply distance increases, the hot air cannot reach the ground, and the heating effect begins to deteriorate ( Figure 6 ); When h1 / h2 is less than 0.6, the hot air can be sent far away but cannot be blown near the ground, and the heating effect is poor ( Figure 7 ).

[0049] The air outlet assembly 3 is liftably mounted on the main frame 1 and has an operating position in which it is lowered to a set height to form the height difference. When the air outlet assembly 3 is in the operating position, the ratio of the height h1 of the air outlet 10 to the width h2 of the first end 21 of the air outlet duct 2 is in the range of 2 / 3 ≤ h1 / h2 ≤ 4 / 5. In this case, the height h1 of the air outlet 10 is the height between the edge of the main frame forming the lowest point of the air outlet duct and the outermost edge of the air outlet assembly in the direction of the air outlet assembly 3 being raised or lowered.

[0050] The air outlet assembly 3 includes an air guide plate 4 and an air outlet frame. The air outlet frame is mounted on the main frame 1. The air guide plate 4 is rotatably mounted on the air outlet frame. When the air outlet assembly 3 is in the working position, the air guide plate 4 can adjust the height of the air outlet 10. The height of the air outlet is the height between the edge of the main frame forming the lowest point of the air outlet duct and the outermost edge of the air guide plate in the direction of the air outlet assembly.

[0051] The air guide plate 4 has a first position that makes the height h1 of the air outlet 10 reach the minimum value, and the ratio range of the minimum value of the height h1 of the air outlet 10 to the width of the first end 21 of the air outlet duct 2 is 2 / 3≤h1 / h2≤4 / 5. This ratio range is used to determine the size and rotation range of the air guide plate to ensure the air outlet effect of the ceiling machine.

[0052] Taking the experimental data of a 3-HP engine as an example, in this solution, h2 is a fixed value of 60. In the presence of the air guide plate 4, the air outlet assembly does not need to be lowered, but the value of h1 can be adjusted directly by the opening angle of the air guide plate. A simulation was conducted, and the simulation results are as follows:

[0053]

[0054]

[0055] According to the experimental results, when h1 / h2 is around 0.8, the air volume and air supply distance are both optimal and ideal ( Figure 8 ); When h1 / h2 continues to increase beyond 0.9, the airflow can only flow downward and cannot diffuse outward, and the effect is not good ( Figure 10 ); When h1 / h2 is reduced to 0.75, the air supply distance increases, but the hot air begins to float upward and cannot land well ( Figure 9 ); When h1 / h2 decreases to 0.67, the air volume decreases further. Although the air supply distance increases, the hot air cannot reach the ground, and the heating effect becomes worse ( Figure 11 ); When h1 / h2 is less than 0.6, the hot air can be sent far away but cannot be blown near the ground, and the heating effect is poor ( Figure 12 ).

[0056] When there is no air guide plate 4 and heating is performed only by lowering the air outlet component 3 to form an air outlet, the airflow direction of the ceiling machine cannot be adjusted. In order to ensure that the heat seal can reach the ground smoothly, the air outlet component 3 needs to be lowered by much more than 54mm to enable the ceiling machine to discharge air. In effect, the air outlet needs to be lowered more, resulting in an increase in the size of the lifting mechanism, which far exceeds the acceptable lowering size of the air outlet component. Therefore, only the structure with the air guide plate 4 is simulated.

[0057] The air guide plate 4 can guide the air flowing out of the air outlet 10. When the ceiling fan is in heating mode, the angle a between the air guide plate 4 and the horizontal plane ranges from 45° to 75° to achieve rapid heating. In this case, the air flowing out of the air outlet 10 can be blown out in a vertical direction under the guidance of the air guide plate 4, achieving a rapid heating effect.

[0058] The air outlet assembly has a closed position that cooperates with the main frame 1 to close the air outlet 10. The air guide plate 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 sealed against the corresponding position of the main frame 1, and the second edge 42 is sealed against the corresponding edge of the air outlet frame. The corresponding sealing between the first edge 41 and the main frame 1 and the corresponding sealing between the second edge 42 and the air outlet assembly ensures that when the air outlet assembly is in the closed position, the air guide plate 4 can seal the corresponding position of the air outlet 10, thereby preventing dust and other impurities from entering the interior of the overhead crane through the air outlet 10 and affecting the performance of the overhead crane.

[0059] When the air outlet assembly 3 is in the closed position, the air outlet frame and the air guide plate 4 cooperate to seal with the main frame 1. At this time, the air outlet assembly 3 is in close contact with the main frame 1, and the opening on the main frame 1 is completely covered by the air outlet assembly 3, thereby giving the skylight a good appearance.

[0060] A first step structure is provided on the second edge 42, and a second step structure is provided on the air outlet frame to cooperate with the first step structure. When the air outlet assembly 3 is in the closed position, the first step structure and the second step structure cooperate in a sealing manner. The first and second step structures not only ensure a reliable seal between the air guide plate 4 and the air outlet frame, but also ensure that during the rotation of the air guide plate 4, there is no structural interference with the air outlet assembly 3, which would affect the structural reliability of the air outlet assembly 3.

[0061] A seal is provided on the first step structure, and when the air outlet assembly 3 is in the closed position, the seal is disposed between the first step structure and the second step structure. In other words, the seal moves along with the air guide plate. When the air guide plate and the air outlet frame are relatively sealed, the seal can close the gap between the air guide plate and the air outlet frame, thereby enhancing the sealing effect between the air guide plate and the air outlet frame.

[0062] The skylight machine further includes a rotating mechanism, which is arranged on the air outlet assembly 3, and the air guide plate 4 is arranged on the rotating mechanism.

[0063] The rotating mechanism includes a rotating arm 5, one end of which is hinged to the air outlet assembly 3, and the other end of which is provided on the air guide plate 4. Preferably, a rotating arm 5 is provided at both ends of the air guide plate 4 in the longitudinal direction to ensure the synchronization of the overall movement of the air guide plate 4.

[0064] The rotation mechanism also includes a driver, which is mounted on the air outlet assembly 3 and directly or indirectly drives the rotating arm 5 to rotate. One end of the rotating arm 5 is mounted on the driver, while the air deflector 4 is mounted on the other end of the rotating arm 5. When the rotating arm 5 rotates with the end mounted on the driver, the air deflector 4 moves along with the end of the rotating arm 5, thereby achieving rotation of the air deflector 4. The driver can be a stepping motor.

[0065] The skylight crane further includes a lifting mechanism, which is disposed on the main frame 1 and on which the air outlet assembly 3 is disposed. The lifting mechanism enables the air outlet assembly 3 to extend or retract into the main frame 1, thereby enabling the air outlet assembly 3 to move freely between an operating position and a closed position.

[0066] The air outlet assembly 3 includes an air outlet frame, an air outlet is formed between the air outlet frame and the main frame, and the air outlet frame is raised and lowered independently. In other embodiments not shown, 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 frame, and the return air panel is provided with a return air outlet. The air outlet frame and the return air panel are connected and raised and lowered together.

[0067] like Figure 13 and Figure 14 The figure shows another embodiment of a ceiling fan. The air outlet assembly 3 is provided with at least one second air outlet 13, which communicates with the second end 22 of the air outlet duct. The provision of the second air outlet 13 enables the ceiling fan to meet the requirements of diagonally downward airflow, or even vertically downward airflow. Furthermore, the combination of the air outlet 10 and the second air outlet 13 increases the number of air outlet options for the ceiling fan, thereby improving the fan's airflow efficiency, temperature regulation accuracy, and speed.

[0068] When the air outlet assembly 3 descends to form the air outlet 10 between the air outlet assembly 3 and the main frame 1, a gap is formed between the air outlet assembly 3 and the main frame 1, and the gap forms an air supply duct 14. One end of the air supply duct 14 is connected to the air outlet duct 2, and the other end of the air supply duct 14 forms the air outlet 10. The airflow in the air outlet duct 2 is guided by the air supply duct 14 and then blown out of the air outlet 10. The air supply duct 14 is used to guide the vertical downward airflow in the air outlet duct 2 to be discharged in a generally horizontal direction away from the overhead crane, or even in a direction inclined upward relative to the horizontal plane, thereby achieving horizontal air discharge to the overhead crane.

[0069] In the prior art, all ceiling machines use air outlets opened on the surface facing the ground to discharge air. In order to change the direction of the air outlet, an air guide plate is set at the air outlet to guide the air flow. However, on the installation plane of the ceiling machine, the projection of the air guide plate does not overlap with the projection of the panel of the ceiling machine, so that the air guide plate has a poor guiding effect on the air flow, which ultimately reduces the air supply distance of the ceiling machine. For this reason, the main frame 1 of the present application also includes a frame 15. When the air outlet component 3 is lowered to form the air outlet 10 between the main frame 1, the air supply duct 14 is formed between the air outlet component 3 and the frame 15. On the installation plane of the main frame 1 (such as the ceiling), the projection of the air outlet component 3 and the projection of the frame 15 at least partially overlap. When the projection of the air outlet component 3 partially coincides with the projection of the frame 15, the air outlet component is substantially extended compared to the prior art, so that the horizontal blowing effect of the ceiling machine is good and the air supply distance is increased. When the ceiling machine opens the air outlet 10, the air outlet component 3 gradually moves away from the main frame 1 to form the air supply duct 14. At this time, the corresponding part of the air outlet component 3 forms the lower side of the air supply duct 14. When the air flow passes through the air supply duct 14, the air flow flows in a horizontal direction or even blows out in an upward inclined direction under the guidance of the lower side of the air supply duct, so that the air supply distance of the ceiling machine is increased, thereby achieving the effect of horizontal air outlet.

[0070] As another embodiment, the projection of the air outlet assembly 3 completely overlaps with the projection of the frame 15. In this case, compared to the case where the projection of the air outlet assembly 3 partially overlaps with the projection of the frame 15, the air outlet assembly can be further extended, thereby achieving a better flat blowing effect of the overhead crane and further increasing the air supply distance. At the same time, when the overhead crane is in the stopped state, the air outlet assembly 3 is attached to the main frame 1, and the corresponding part of the air outlet assembly 3 is attached to the frame 15. When a person observes the overhead crane from the ground, he can only see the air outlet assembly 3 and cannot see the main frame 1, which effectively increases the aesthetics of the overhead crane.

[0071] As another embodiment, the projection of the air outlet component 3 exceeds the projection of the frame 15. In this case, compared with the case where the projection of the air outlet component 3 completely coincides with the projection of the frame 15, the air outlet component can be further extended, thereby further increasing the flat blowing effect and air supply distance of the ceiling machine.

[0072] Preferably, the projection of the air outlet assembly 3 exceeds the projection of the main frame 1, so that the air outlet assembly 3 effectively increases the air guide size compared with the prior art, thereby achieving the purpose of increasing the air supply distance of the ceiling machine.

[0073] The ceiling machine also includes an air guide plate 4, which is rotatably arranged at the second air outlet 13, and the air guide plate 4 can close or open the second air outlet 13. When it is necessary to open the second air outlet 13, the air guide plate 4 gradually rotates to connect 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 air guide plate 4 can adjust its inclination angle according to actual needs to adjust the air outlet direction and / or air volume of the second air outlet 13; and when it is necessary to close the second air outlet 13, the air guide plate 4 is reset to a state of sealing cooperation with the air outlet component 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 joint guiding action of the air outlet component 3 and the air guide plate 4.

[0074] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A ceiling fan with a heating mode, characterized by: include: A main frame (1), wherein an air outlet duct (2) is provided in the main frame (1), and the air outlet duct (2) has a first end (21) and a second end (22) along the air flow direction; An air outlet component (3), the air outlet component (3) being arranged on the main frame (1), and when the skylight unit is in a heating mode, the air outlet component (3) and the main frame (1) have a height difference, and an air outlet (10) is formed between the air outlet component (3) and the main frame (1), and the air outlet (10) is communicated with the second end (22) of the air outlet duct (2); The air outlet assembly (3) is movably mounted on the main frame (1), and the air outlet assembly (3) has a working position in which it is lowered to a set height to form the height difference. When the air outlet assembly (3) is in the working position, the ratio of the height h1 of the air outlet (10) to the width h2 of the first end (21) of the air outlet duct (2) is in the range of 2 / 3≤h1 / h2≤4 / 5. The height h1 of the air outlet (10) refers to the height between the edge of the main frame (1) forming the lowest point of the air outlet duct (2) and the outermost edge of the air outlet component (3) in the direction in which the height difference is formed between the air outlet component (3) and the main frame (1).

2. The roof crane according to claim 1, characterized in that: The air outlet assembly (3) comprises an air guide plate (4) and an air outlet frame, wherein the air outlet frame is arranged on the main frame (1), the air guide plate (4) is rotatably arranged on the air outlet frame, and when the air outlet assembly (3) is in the working position, the air guide plate (4) can adjust the height of the air outlet (10).

3. The roof crane according to claim 2, characterized in that: The air guide plate (4) has a first position that enables the height h1 of the air outlet (10) to reach a minimum value, and the ratio of the minimum value of the height h1 of the air outlet (10) to the width of the first end (21) of the air outlet duct (2) is in the range of 2 / 3≤h1 / h2≤4 / 5.

4. The overhead crane according to claim 2, characterized in that: When the ceiling unit is in heating mode, the angle a between the plane where the air guide plate (4) is located and the horizontal plane is in the range of 45° to 75°.

5. The overhead crane according to claim 2, characterized in that: The air outlet assembly (3) has a closed position for cooperating with the main frame (1) to close the air outlet (10); the air guide plate (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 sealed with a corresponding position of the main frame (1), and the second edge (42) is sealed with a corresponding edge of the air outlet frame.

6. The overhead crane according to claim 5, characterized in that: When the air outlet assembly (3) is in the closed position, the air outlet frame and the air guide plate (4) cooperate with the main frame (1) to form a seal.

7. The overhead crane according to claim 5, characterized in that: A first step structure is provided on the second edge (42), and a second step structure matching the first step structure is provided on the air outlet frame. When the air outlet assembly (3) is in a closed position, the first step structure and the second step structure are sealed and matched.

8. The overhead crane according to claim 7, characterized in that: A sealing member is provided on the first step structure, and when the air outlet assembly (3) is in a closed position, the sealing member is provided between the first step structure and the second step structure.

9. The overhead crane according to claim 1, characterized in that: The skylight machine further comprises a lifting mechanism, the lifting mechanism being arranged on the main frame (1), and the air outlet assembly (3) being arranged on the lifting mechanism.

10. The overhead crane according to claim 1, characterized in that: The air outlet assembly (3) comprises an air outlet frame, an air outlet is formed between the air outlet frame and the main frame, and the air outlet frame is independently raised and lowered.

11. The overhead crane according to claim 1, characterized in that: The air outlet assembly (3) comprises an air outlet frame and an air return panel, an air outlet is formed between the air outlet frame and the main frame, the air return panel is provided with an air return port, and the air outlet frame and the air return panel are connected and rise and fall together.

12. The overhead crane according to claim 1, characterized in that: At least one second air outlet (13) is provided on the air outlet component (3), and the second air outlet (13) is communicated with the second end (22) of the air outlet duct (2).

13. The overhead crane according to claim 12, characterized in that: The skylight machine further comprises an air guide plate (4), the air guide plate (4) being rotatably arranged at the second air outlet (13), and the air guide plate (4) being capable of closing or opening the second air outlet (13).

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