Skylight machine with air supply duct

Abstract

The present invention provides a ceiling machine with an air supply duct, comprising a main frame, an air outlet duct formed in the main frame, and an air outlet assembly, wherein the air outlet assembly can be raised and lowered on the main frame. The ceiling machine with an air supply duct provided by the present invention uses the air outlet assembly descending and the gap formed between the main frame as the air supply duct, and forms a first air outlet that can discharge air horizontally or even tilt upward, thereby effectively overcoming the problem of poor use effect caused by only being able to generate downward airflow in the prior art, and further realizing horizontal air outlet and "waterfall-style" cooling. At the same time, in order to ensure the air outlet effect, a second air outlet for downward air outlet is also provided, so that the ceiling machine can simultaneously meet the downward air outlet requirements in the prior art. By opening and closing the first air outlet and the second air outlet, the air outlet mode of the ceiling machine is increased, and the air outlet effect of the ceiling machine is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of air treatment equipment, in particular to a ceiling machine with an air supply duct. Background Art

[0002] A ceiling air conditioner is a type of air conditioner that is embedded in the ceiling to minimize space. Air is discharged through vents on the ceiling for heat exchange. However, due to the location of the vents, it can only blow air in a set direction and cannot blow horizontally for cooling. Particularly in industrial and commercial settings, downdraft airflow poses the problem of cold air blowing on people, causing discomfort. Long-term exposure to cold air can also lead to colds and other illnesses. Summary of the Invention

[0003] In order to solve the technical problem in the prior art that downward-blowing airflow in a roof jack makes people uncomfortable, a roof jack with an air supply duct is provided, in which an air outlet component can be raised and lowered to form an air supply duct.

[0004] To this end, the present invention provides a ceiling machine with an air supply duct, comprising:

[0005] a main frame, wherein an air outlet duct is formed in the main frame;

[0006] An air outlet assembly is movably mounted on the main frame, and the air outlet assembly is lowered to form a first air outlet between the main frame and the air outlet assembly;

[0007] The air outlet component is provided with at least one second air outlet, and the second air outlet is communicated with the air outlet duct.

[0008] When the air outlet component descends to form the first air outlet between the main frame, a distance is formed between the air outlet component and the main frame, and the distance forms an air supply duct. One end of the air supply duct is connected to the air outlet duct, and the other end of the air supply duct forms the first air outlet.

[0009] On the installation plane of the main frame, the projection of the air outlet assembly at least partially overlaps with the projection of the main frame.

[0010] 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.

[0011] The air guide plate is provided with a plurality of partition plates, all of which are arranged in parallel along the length direction of the air guide plate, and a flow channel is formed between two adjacent partition plates.

[0012] A step sealing structure is provided between the edge of the air guide plate and the edge of the second air outlet.

[0013] A first step structure is provided on the edge of the air guide plate, and a second step structure is provided on the edge of the second air outlet. The first step structure and the second step structure cooperate to form the step sealing structure.

[0014] The first step structure includes an elastic sealing material; and / or the second step structure includes an elastic sealing material.

[0015] The skylight machine further includes at least two partition plates, all of which are arranged in the air outlet duct, and a flow passage is formed between two adjacent partition plates.

[0016] 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.

[0017] The lifting mechanism is connected to a side of the air outlet assembly facing away from the return air outlet of the skylight unit.

[0018] The lifting mechanism is connected to the corner of the air outlet component.

[0019] The lifting mechanism comprises:

[0020] Drive device;

[0021] A transmission mechanism is connected to the air outlet assembly, the transmission mechanism is drivingly connected to a driving device, and the driving device drives the air outlet assembly to move up and down through the transmission mechanism;

[0022] The transmission mechanism has a guide portion;

[0023] The guide mechanism and the guide portion can move relatively in the lifting direction of the air outlet assembly. At the same time, the guide mechanism and the guide portion cooperate in the upper limit position in the horizontal direction.

[0024] The guide mechanism comprises a guide unit having two guide members arranged opposite to each other, a guide channel being formed between the two guide members, and the guide portion being located in the guide channel.

[0025] There are a plurality of guide units, and the plurality of guide units are arranged at intervals along the lifting direction of the air outlet assembly.

[0026] The transmission mechanism comprises:

[0027] a gear mounted on the output shaft of the driving device;

[0028] A rack is fixedly connected to the air outlet assembly, the rack is engaged with the gear, and the driving device drives the air outlet assembly to rise and fall through the cooperation of the gear and the rack; the guide part is located on the rack.

[0029] The guide portion is a guide post on the rack, and two opposite guide members are provided with guide grooves matching the guide posts, and the guide posts are clamped between the two guide members through the guide grooves.

[0030] The rack is provided with meshing teeth on a first side and the guide portion on a second side, and the rack has a mounting groove, wherein the mounting groove is located between the meshing teeth and the guide portion;

[0031] The two guide members of the guide unit are respectively located on both sides of the guide portion, and one of the guide members of the guide unit is located in the installation groove.

[0032] The extension direction of the mounting groove is the lifting direction of the air outlet assembly. The mounting groove has a first end wall located above and a second end wall located below along the lifting direction of the air outlet assembly. The maximum distance between the first end wall and the guide unit is equal to the maximum descending height of the air outlet assembly.

[0033] The guide member includes a slider that is in sliding cooperation with the guide portion and / or a roller that is in rolling cooperation with the guide portion.

[0034] The lifting mechanism further comprises an installation box, which is arranged on the main frame, and the transmission mechanism and the guide mechanism are installed in the installation box.

[0035] The driving device is arranged outside the installation box, and the output shaft of the driving device passes through the interior of the installation box.

[0036] The air outlet assembly is provided with a first wind shield, and the main frame is provided with a second wind shield. The first wind shield cooperates with the second wind shield to separate the return air port and the air outlet duct, and the first wind shield can move relative to the second wind shield.

[0037] A sealing member is provided between contact surfaces of the first wind shielding portion and the second wind shielding portion.

[0038] The angle β between the air outlet direction of the first air outlet and the horizontal plane is in the range of -20°≤β≤45°, and when β=0°, the air outlet direction of the first air outlet is parallel to the horizontal direction, and when β>0°, the air outlet direction of the first air outlet is inclined upward relative to the horizontal plane.

[0039] The angle β between the air outlet direction of the first air outlet and the horizontal plane is in the range of 0°≤β≤30°, and when β>0°, the air outlet direction of the first air outlet is inclined upward relative to the horizontal plane.

[0040] The air outlet assembly has a first descending height L1, and the numerical range of the preset height L1 is 15 mm ≤ L1 ≤ 60 mm.

[0041] The air outlet assembly has a first descending height L1, and the numerical range of the preset height L1 is 20 mm ≤ L1 ≤ 50 mm.

[0042] The skylight machine has a first air outlet mode, a second air outlet mode and a third air outlet mode;

[0043] When the skylight unit is in the first air outlet mode, the first air outlet is opened and the second air outlet is closed;

[0044] When the skylight unit is in the second air outlet mode, the first air outlet is opened and some or all of the second air outlets are opened;

[0045] When the skylight unit is in the third air outlet mode, the first air outlet is closed and some or all of the second air outlets are opened.

[0046] When the overhead unit is in cooling mode, the overhead unit is in the first air outlet mode or the second air outlet mode;

[0047] When the skylight unit is in the heating mode, the skylight unit is in the third air outlet mode or the second air outlet mode.

[0048] The main frame includes a frame. When the air outlet assembly is lowered to form the first air outlet between the main frame and the air outlet assembly, the air supply duct is formed between the air outlet assembly and the frame. The portion of the frame forming the air supply duct is tilted relative to the horizontal plane. Alternatively, the portion of the air outlet assembly forming the air supply duct is tilted relative to the horizontal plane.

[0049] The angle range of the inclination angle a formed between the part of the frame used to form the air supply duct and the horizontal plane is -20°≤a≤45°, and when a=0°, the part of the frame used to form the air supply duct is parallel to the horizontal direction, and when a>0°, the part of the frame used to form the air supply duct is inclined upward relative to the horizontal plane; and / or, the angle range of the inclination angle b formed between the part of the air outlet component used to form the air supply duct and the horizontal plane is -20°≤b≤45°, and when b=0°, the part of the air outlet component used to form the air supply duct is parallel to the horizontal direction, and when b>0°, the part of the air outlet component used to form the air supply duct is inclined upward relative to the horizontal plane.

[0050] The air outlet duct has a first end and a second end along the airflow direction, the first air outlet and the second air outlet are both connected to the second end, and the ratio of the width D1 of the first end to the width D2 of the second air outlet is in the range of 0.75≤D2 / D1≤0.85.

[0051] The air outlet assembly includes an air outlet frame, and the air outlet frame is lifted and lowered independently.

[0052] The air outlet assembly includes an air outlet frame and an air return panel. The air return panel is provided with an air return port. The air outlet frame is connected to the air return panel and rises and falls together.

[0053] The ceiling machine with an air supply duct provided by the present invention forms a first air outlet between the air outlet component and the main frame, so that the ceiling machine can discharge air to a distance, thereby effectively overcoming the problem in the prior art that only downward airflow can be generated and people are blown. The first air outlet can discharge air horizontally or even obliquely upward by tilting the air outlet component, tilting the frame and / or the projection of the air outlet component at least partially overlapping with the frame, thereby realizing "waterfall-style" cooling. At the same time, in order to ensure the air outlet effect, a second air outlet for downward air outlet is also provided, so that the ceiling machine can simultaneously meet the downward air outlet requirements in the prior art. By opening and closing the first air outlet and the second air outlet, the air outlet modes of the ceiling machine are increased, and the air outlet effect of the ceiling machine is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the structure of a roof hoist provided by an embodiment of the present invention;

[0055] Figure 2 A schematic diagram of the structure of a rooftop machine with the second air outlet opened according to an embodiment of the present invention;

[0056] Figure 3 A schematic structural diagram of a rooftop crane provided by an embodiment of the present invention with the first air outlet opened;

[0057] Figure 4 A schematic diagram of the structure of a rooftop machine provided by an embodiment of the present invention in which the first air outlet and the second air outlet are both open;

[0058] Figure 5 A schematic structural diagram of an air outlet assembly and an air guide plate provided in an embodiment of the present invention;

[0059] Figure 6 A schematic structural diagram of a lifting mechanism provided in an embodiment of the present invention;

[0060] Figure 7 A schematic diagram of the structure of the lifting mechanism after lowering provided by an embodiment of the present invention;

[0061] Figure 8 A cross-sectional view of an open second air outlet provided by an embodiment of the present invention;

[0062] Figure 9 A cross-sectional view of an open first air outlet provided by an embodiment of the present invention;

[0063] Figure 10 Another cross-sectional view of the first air outlet provided by an embodiment of the present invention being opened;

[0064] Figure 11 A cross-sectional view of an embodiment of the present invention with the first air outlet and the second air outlet both opened;

[0065] Figure 12 Another structural schematic diagram of a roof crane provided by an embodiment of the present invention;

[0066] In the picture:

[0067] 10. Main frame; 11. Air outlet duct; 20. Air outlet assembly; 12. First air outlet; 13. Second air outlet; 14. Air supply duct; 4. Wind guide plate; 5. Rotating arm; 6. Partition plate; 8. First wind shield; 9. Second wind shield; 81. First contact member; 92. Second contact member; 93. Third contact member; 30. Driving device; 40. Gear; 50. Rack; 51. Meshing teeth; 52. Guide portion; 53. First end wall; 54. Second end wall; 55. Mounting groove; 60. Guide mechanism; 61. Guide unit; 611. Guide member; 70. Mounting box; 71. Box body; 15. Frame; 111. First end; 112. Second end; 22. Guide plate. DETAILED DESCRIPTION

[0068] 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.

[0069] Existing ceiling fans have a panel facing the ground, and a return air vent and an air outlet surrounding the return air vent are set on the panel. That is, the air outlet direction of the ceiling fan is generally downward or even vertically downward. However, when cooling, the air outlet is cold air, which will blow directly on the human body and cause a decrease in comfort.

[0070] To this end, this application provides a Figures 1 to 12The illustrated overhead hood with an air supply duct includes: a main frame 10, within which is formed an air outlet duct 11; an air outlet assembly 20, which is arbitrarily mounted on the main frame 10 and forms a first air outlet 12 between the main frame 10 and the air outlet assembly 20; and at least one second air outlet 13 formed on the air outlet assembly 20, which communicates with the air outlet duct 11. The first air outlet 12 allows the overhead hood to discharge air remotely, even horizontally or obliquely upward, thereby overcoming the problem of cold air blowing downward and directly onto the human body in the prior art. The second air outlet 13 also enables the overhead hood to meet the requirements of oblique downward or even vertical downward air outlet. Furthermore, the coordination of the first and second air outlets 12, 13 increases the number of air outlet options available to the overhead hood, thereby improving the air outlet efficiency, temperature regulation accuracy, and speed.

[0071] It should be noted that the main frame 10 is the main load-bearing structure of the ceiling unit. When the ceiling unit is installed, the main frame 10 is used to be installed on the ceiling. Other structures can be directly or indirectly installed on the main frame 10 and fixed to the ceiling through the main frame 10. The ceiling unit has an internal unit portion installed in the ceiling. The main frame 10 is connected to the internal unit. The air outlet assembly 20 is connected to the main frame 10. The internal unit has an internal unit exhaust port. The first end of the air outlet duct 11 of the main frame 10 is connected to the internal unit exhaust port. The air flow path is: return air port - evaporator - internal unit exhaust port - first end of the air outlet duct 11 - second end of the air outlet duct - air outlet (first air outlet 12 and / or second air outlet 13) is blown out.

[0072] When the air outlet assembly 20 descends to form the first air outlet 12 between the air outlet assembly 20 and the main frame 10, a gap is formed between the air outlet assembly 20 and the main frame 10, forming an air supply duct 14. One end of the air supply duct 14 is connected to the air outlet duct 11, and the other end of the air supply duct 14 forms the first air outlet 12. The airflow in the air outlet duct 11 is guided by the air supply duct 14 and then blown out of the first air outlet 12. The air supply duct 14 is used to guide the vertical downward airflow in the air outlet duct 11 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.

[0073] In the prior art, all ceiling machines use air outlets opened on the surface facing the ground for air outlet. In order to change the direction of air outlet, an air guide plate is set at the air outlet for air diversion. 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, resulting in poor airflow guidance effect of the air guide plate, which ultimately reduces the air supply distance of the ceiling machine. For this reason, the main frame 10 of the present application also includes a frame 15. When the air outlet component 20 is lowered to form the first air outlet 12 between the main frame 10, the air supply duct 14 is formed between the air outlet component 20 and the frame 15. On the installation plane of the main frame 10 (such as the ceiling), the projection of the air outlet component 20 at least partially overlaps with the projection of the frame 15. When the projection of the air outlet assembly 20 partially coincides with the projection of the frame 15, the air outlet assembly 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 first air outlet 12, the air outlet assembly 20 gradually moves away from the main frame 10 to form the air supply duct 14. At this time, the corresponding part of the air outlet assembly 20 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.

[0074] As another embodiment, the projection of the air outlet assembly 20 completely overlaps with the projection of the frame 15. In this case, compared to the case where the projection of the air outlet assembly 20 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 20 is attached to the main frame 10, and the corresponding part of the air outlet assembly 20 is attached to the frame 15. When a person observes the overhead crane from the ground, he can only see the air outlet assembly 20 and cannot see the main frame 10, which effectively improves the aesthetics of the overhead crane.

[0075] As another embodiment, the projection of the air outlet component 20 exceeds the projection of the frame 15. In this case, compared with the case where the projection of the air outlet component 20 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.

[0076] Preferably, the projection of the air outlet assembly 20 exceeds the projection of the main frame 10, so that the air outlet assembly 20 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.

[0077] The air outlet assembly 20 is also provided with a guide plate 22, and the guide plate 22 can form part of the air outlet duct 11 to make the inner surface of the air outlet duct 11 smoother, or the guide plate 22 is located at the corner of the air outlet duct 11 and the air supply duct 14 so as to better guide the airflow in the air outlet duct 11 to the air supply duct 14.

[0078] 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 the second air outlet 13 needs to be opened, the air guide plate 4 gradually rotates to connect the second air outlet 13 with the air outlet duct 11, so that the air flow in the air outlet duct 11 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 the second air outlet 13 needs to be closed, the air guide plate 4 is reset to a state of sealing cooperation with the air outlet assembly 20, thereby closing the second air outlet 13. At this time, the air flow in the air outlet duct 11 can only be blown out from the first air outlet 12 under the joint guidance of the air outlet assembly 20 and the air guide plate 4.

[0079] The skylight machine further includes a rotating mechanism, which is disposed on the air outlet assembly 20 . The air guide plate 4 is disposed on the rotating mechanism, and the rotating mechanism can drive the air guide plate 4 to rotate.

[0080] The rotating mechanism includes a rotating arm 5 , one end of the rotating arm 5 is hinged to the air outlet assembly 20 , and the air guide plate 4 is provided on the other end of the rotating arm 5 .

[0081] The shape of the rotating arm 5 is U-shaped, and the U-shape is used to avoid structural interference between the rotating arm 5 and the air outlet assembly 20 during the rotation process, thereby ensuring the reliability of the rotation of the air guide plate 4.

[0082] The rotating mechanism further includes a power source, which is provided on the air outlet assembly 20, and the end of the rotating arm 5 is provided on the power source. Preferably, the power source is a motor, and the output shaft of the motor drives one end of the rotating arm 5 to rotate, thereby realizing the rotation of the air guide plate 4.

[0083] The air guide plate 4 is provided with a plurality of partition plates 6, all arranged in parallel along the length of the air guide plate 4, with flow channels formed between adjacent partition plates 6. The partition plates 6 divide the airflow passing through the air guide plate 4 into multiple streams, each of which is guided through a corresponding portion of the air guide plate 4, thereby enhancing the airflow guidance function of the air guide plate 4. Furthermore, the partition plates 6 are installed along the width of the air guide plate 4, effectively increasing the rigidity of the air guide plate 4 and ensuring the structural reliability of the air guide plate 4.

[0084] As another embodiment, the overhead crane further includes at least two partition plates 6, all of which are disposed within the air outlet duct 11, with an overflow channel formed between two adjacent partition plates 6. The partition plates 6 divide the airflow within the air outlet duct 11 into multiple streams, thereby preventing excessive turbulence in the air outlet duct 11 from affecting the air outlet effect of the first air outlet 12 and the second air outlet 13.

[0085] A step sealing structure is provided between the edge of the air guide plate 4 and the edge of the second air outlet 13. The sealing structure is used to ensure that when the second air outlet 13 is closed, the air flow will not flow out through the gap between the air guide plate 4 and the second air outlet 13 (in order to prevent the problem of jamming caused by manufacturing tolerances, it is necessary to design an avoidance gap between the air guide plate 4 and the second air outlet 13) and reduce the air outlet effect. Wherein, the air guide plate 4 has a plurality of edges connected in sequence, and the edge of the second air outlet 13 is an annular edge that matches the air guide plate 4. A step sealing structure is provided between each edge of the air guide plate 4 and the corresponding annular edge portion to ensure the sealing effect of the air guide plate 4 on the second air outlet 13. Preferably, along the airflow direction, the air guide plate 4 has a first edge and a second edge, and the second air outlet 13 has a third edge and a fourth edge. When the air guide plate 4 closes the second air outlet 13, the first edge and the third edge are sealed together, and the second edge and the fourth edge are sealed together.

[0086] The edge of the air deflector 4 is provided with a first step structure, and the edge of the second air outlet 13 is provided with a second step structure. The first and second step structures cooperate to form the step sealing structure. The provision of the first and second step structures forms a zigzag gap between the edge of the air deflector 4 and the edge of the second air outlet 13, thereby further enhancing the sealing effect.

[0087] The first step structure includes an elastic sealing material, wherein the first step structure can be made of the elastic sealing material to improve the sealing effect of the step sealing structure, or an elastic sealing material, such as a sponge or other sealing member, can be provided on the first step structure.

[0088] The second step structure includes an elastic sealing material, wherein the second step structure can be made of the elastic sealing material to improve the sealing effect of the step sealing structure, or an elastic sealing material, such as a sponge or other sealing member, can be provided on the second step structure.

[0089] In order to prevent condensation at the second air outlet 13 when air is discharged from the first air outlet 12, the air guide plate 4 is made of thermal insulation material, or is composed of high-strength material and thermal insulation material. The air guide plate 4 can be made of high-strength material as the main body and thermal insulation material is arranged at the edge of the high-strength material, or the material for making the air guide plate 4 can meet both strength requirements and thermal insulation requirements.

[0090] The skylight crane further includes a lifting mechanism, which is disposed on the main frame 10 and on which the air outlet assembly 20 is disposed. The lifting mechanism can drive the air outlet assembly 20 to rise or fall.

[0091] Because the projection of the air outlet assembly 20 at least partially overlaps with the frame 15, the air outlet assembly 20 needs to extend to the bottom of the frame 15 compared to the prior art, which increases the width of the air outlet assembly 20 and makes it more prone to deformation. It is also prone to shaking during the lifting process, which affects the degree of fit between the air outlet assembly 20 and the main frame 10. Therefore, in order to ensure the reliability of the lifting of the air outlet assembly 20, the lifting mechanism is connected to the side of the air outlet assembly 20 that is away from the return air outlet of the overhead crane. The return air outlet of the overhead crane is located in the middle of the overhead crane, and the air outlet assembly 20 is arranged around the return air outlet of the overhead crane.

[0092] The cross-section of the air outlet component 20 is square or polygonal. On the side of the rectangle or polygon, a first air outlet can be formed between the main frame 10 and the air outlet component 20. In order to avoid the lifting mechanism from affecting the first air outlet 12 and / or the second air outlet 13, the lifting mechanism is connected to the corner of the air outlet component 20. In other words, the lifting mechanism is located between two adjacent first air outlets 12.

[0093] The lifting mechanism includes a driving device 30, a transmission mechanism and a guide mechanism 60. The transmission mechanism is connected to the air outlet assembly 20, and the transmission mechanism is driven and connected to the driving device 30. The driving device 30 drives the air outlet assembly 20 to rise and fall through the transmission mechanism; the transmission mechanism has a guide part 52; the guide mechanism 60 and the guide part 52 can move relative to each other in the lifting direction of the air outlet assembly 20. At the same time, the guide mechanism 60 and the guide part 52 cooperate in the upper limit position in the horizontal direction.

[0094] The skylight machine of the present invention is provided with a guide part 52 on the transmission mechanism, so that the transmission mechanism cooperates with the guide mechanism 60 through the guide part 52. The guide mechanism 60 can limit the moving direction of the transmission mechanism, so that the transmission mechanism can move in the lifting direction of the air outlet component 20 without shaking in the horizontal direction, thereby making the transmission mechanism and the driving mechanism cooperate more closely and stably, avoiding shaking of the transmission mechanism during the driving process and reducing the generation of noise.

[0095] The guide mechanism 60 includes a guide unit 61 having two opposing guide members 611. A guide channel is formed between the two guide members 611, and the guide portion 52 is located within the guide channel. The two opposing guide members 611 form a guide channel between them. The guide channel constrains the movement direction of the guide portion 52, forcing it to move only along the guide channel. This, in turn, constrains the movement direction of the transmission mechanism, thereby preventing vibration during movement and reducing noise.

[0096] Preferably, there are multiple guide units 61, and the multiple guide units 61 are spaced apart along the lifting direction of the air outlet assembly 20. By providing multiple guide units 61, multiple guide channels can be formed in the lifting direction of the air outlet assembly 20. The multiple guide channels and the guide portion 52 form a plurality of positional limit fits in the lifting direction of the air outlet assembly 20, thereby further ensuring the stability of the transmission mechanism during movement.

[0097] The transmission mechanism includes a gear 40 and a rack 50. The gear 40 is mounted on the output shaft of the drive device 30. The rack 50 is fixedly connected to the air outlet assembly 20 and meshes with the gear 40. The drive device 30 drives the air outlet assembly 20 up and down through the cooperation of the gear 40 and the rack 50. A guide portion 52 is located on the rack 50. During the lifting process, the output shaft of the drive device 30 drives the gear 40 to rotate. The rotating gear 40 drives the rack 50 to rise or fall, and the rack 50 then drives the air outlet assembly 20 up or down. During the movement, the guide portion 52 cooperates with the guide member 611 and moves within the guide channel. Under the guidance of the guide channel, the rack 50 can only move up or down, thus preventing horizontal vibration.

[0098] Furthermore, the guide portion 52 is a guide post on the rack 50, and two opposing guide members 611 are provided with guide grooves matching the guide posts. The guide grooves clamp the guide posts between the two guide members 611. Due to the clearance between the gear 40 and the rack 50, the rack 50 may still vibrate vertically during the ascent and descent process. By providing the guide post on the rack 50 and the guide groove on the guide member 611, the guide member 611 clamps the guide post through the guide groove, allowing the guide post to descend slowly, thereby avoiding vertical vibration and ensuring a smooth ascent or descent of the entire air outlet assembly 20.

[0099] The rack 50 is provided with meshing teeth 51 on its first side and a guide portion 52 on its second side. The rack 50 has a mounting slot 55 located between the meshing teeth 51 and the guide portion 52. The two guide members 611 of the guide unit 61 are located on either side of the guide portion 52, with one of the guide members 611 located within the mounting slot 55. By providing the guide portion 52 on the rack 50, the rack 50 not only performs a transmission function but also has a more compact structure. Providing the mounting slot 55 on the rack 50 not only reduces the weight of the rack 50 and saves material, but also allows a portion of the guide member 611 to be positioned within the mounting slot 55, significantly saving assembly space. Furthermore, the mounting slot 55 itself can limit the position of the guide member 611, thus achieving multiple uses for a single item.

[0100] Specifically, the mounting slot 55 extends in the direction of the air outlet assembly 20's ascent and descent. The mounting slot 55 has a first end wall 53 located above and a second end wall 54 located below, along the ascent and descent direction of the air outlet assembly 20. The maximum distance between the first end wall 53 and the guide unit 61 is equal to the maximum descent height of the air outlet assembly 20. During descent, the first end wall 53 of the mounting slot 55 moves toward the guide unit 61. When the first end wall 53 reaches the position of the guide unit 61, a positional engagement is formed, thereby preventing the rack 50 from disengaging from the gear 40.

[0101] Preferably, in this embodiment, the guide member 611 includes a roller that is in rolling cooperation with the guide portion 52 . The roller and the guide portion 52 are in rolling cooperation with each other, so that the friction resistance can be reduced while clamping the guide portion 52 .

[0102] It should be noted that the guide member 611 may also adopt other structures. For example, the guide member 611 is a slider that slides with the guide portion 52, or the guide member 611 includes both a slider and a roller, and the two are used in combination.

[0103] During assembly, the spacing of the guide units 61 will affect the stability of the transmission mechanism when it is lowered. Figure 1In the illustrated embodiment, the guide mechanism 60 includes two guide units 61 spaced apart along the direction of elevation of the air outlet assembly 20. The guide units 61 slide in engagement with the guide portion 52 in the direction of elevation of the air outlet assembly 20. Simultaneously, the guide mechanism 60 and the guide portion 52 are engaged horizontally for upper limit. The maximum descent height B of the air outlet assembly 20 and the spacing C between the two guide units 61 are determined by a B / C ratio ranging from 2:1 to 4:1. When B / C is 2:1, the spacing between the guide units 61 is greater, resulting in the most stable descent of the transmission mechanism. When B / C is 4:1, the descent of the transmission mechanism is maximized, i.e., the maximum descent height of the air outlet assembly 20 is maximized. This allows for a smaller transmission mechanism, saving space. When B / C is 3:1, the spacing between the guide units 61 is moderate, and the maximum descent height of the air outlet assembly 20 meets design requirements without increasing the size of the transmission mechanism. Therefore, a B / C ratio of 3:1 ensures stability during the descent of the air outlet assembly 20 while also making the structure more compact and compact, saving cost and installation space.

[0104] In the above embodiment, the transmission mechanism includes a gear 40 and an output shaft installed on the driving device 30; it is fixedly connected to the air outlet assembly 20, and the rack 50 is engaged with the gear 40. The driving device 30 drives the air outlet assembly 20 to rise and fall through the cooperation of the gear 40 and the rack 50; the guide portion 52 is located on the rack 50; the length A of the rack 50 along the lifting direction of the air outlet assembly 20, and the ratio range of A / C is: 3:1 to 5:1.

[0105] It is understandable that the length A of the rack 50 is related to the maximum descent height of the air outlet assembly 20 and the spacing of the guide units 61. When the A / C is 3:1, the spacing of the guide units 61 is larger, and the descent process of the transmission mechanism is the most stable. When the A / C is 5:1, the spacing of the guide units 61 is smaller, and the corresponding descent of the transmission mechanism is the largest, that is, the maximum descent height of the air outlet assembly 20 is the largest, which can make the size of the transmission mechanism smaller and save space. When the A / C is 4:1, the spacing of the guide units 61 is moderate, and the maximum descent height of the air outlet assembly 20 can also meet the design requirements without expanding the size of the transmission mechanism. Therefore, when the A / C is 3:1, it can not only ensure the stability of the air outlet assembly 20 during the lifting process, but also make the structure more compact and small, saving cost and installation space.

[0106] The lifting mechanism further comprises a mounting box 70, which is arranged on the main frame 10, and the transmission mechanism and the guide mechanism 60 are installed in the mounting box 70. The driving device 30 is a motor, which is arranged outside the mounting box 70, and the output shaft of the motor is passed through the interior of the mounting box 70.

[0107] Furthermore, the installation box 70 includes a box body 71 and a box cover. The box body 71 is fixedly connected to the main frame 10 and is detachably mounted on the box body 71. This structure allows the entire lifting mechanism to be integrated, minimizing the installation space it occupies. In addition, the detachable installation box 70 facilitates installation and removal, reducing assembly and subsequent maintenance costs.

[0108] It should be noted that in the lifting mechanism, a transmission mechanism, a guide mechanism 60 and an installation box 70 form a lifting unit. There can be multiple lifting units. In this embodiment, there are four lifting units, which are respectively connected to the four corners of the air outlet assembly 20 to ensure uniform force.

[0109] It should also be noted that in this embodiment, a single motor is provided for each lifting unit, which is directly connected to the transmission mechanism through the motor. However, the motor and transmission mechanism can be coordinated in more ways than this. In another embodiment (not shown), the other structures are the same as this embodiment, but the difference is that one motor drives two lifting units, and the motors are simultaneously connected to different transmission mechanisms through belts or gears, thereby reducing the number of motors and lowering costs. Similarly, a single motor can also be used to drive four lifting units to move up and down simultaneously.

[0110] The air outlet assembly 20 is provided with a first air shield 8, and the air outlet duct 11 is provided with a second air shield 9. The first air shield 8 and the second air shield 9 cooperate to separate the return air port and the air outlet duct 11, and the first air shield 8 is movable relative to the second air shield 9. The cooperation between the first air shield 8 and the second air shield 9 ensures that when the air outlet assembly 20 is lowered to a preset height or raised to close the first air outlet 12 and only open the second air outlet 13, the airflow in the air outlet duct 11 will not flow back to the return air port and cause an airflow short circuit, thereby effectively ensuring the air outlet efficiency of the overhead crane.

[0111] A sealing member is provided between the contact surfaces of the first windshield portion 8 and the second windshield portion 9. The sealing member is used to further enhance the sealing effect between the first windshield portion 8 and the second windshield portion 9.

[0112] The first wind shield portion 8 has a first contact member 81, and the second wind shield portion 9 is provided with a second contact member 92 and a third contact member 93 with a height difference. The first contact member 81 is located between the second contact member 92 and the third contact member 93, and the first contact member 81 has a first position in which it is lowered to contact and seal with the third contact member 93 and a second position in which it is raised to contact and seal with the second contact member 92. When the air outlet assembly 20 is in the working position, the first contact member 81 is in the first position.

[0113] Specifically, the first windshield 8 is T-shaped, with the horizontal section of the T forming the first contact member 81. The second windshield 9 is C-shaped, with the upper horizontal section of the C forming the second contact member 92, and the lower horizontal section of the C forming the third contact member 93. The first contact member 81 extends between the second contact member 92 and the third contact member 93. During the raising and lowering of the air outlet assembly 20, the first contact member 81 moves between the second contact member 92 and the third contact member 93. At the two set positions of the air outlet assembly 20, the first contact member 81 respectively contacts and seals with the second contact member 92 and the third contact member 93.

[0114] In the first position, the upper surface of the first contact member 81 is in sealed contact with the lower surface of the second contact member 92 . In the second position, the lower surface of the first contact member 81 is in sealed contact with the upper surface of the third contact member 93 .

[0115] The first contact member 81 is made of an elastic material; and / or the second contact member 92 is made of an elastic material; and / or the third contact member 93 is made of an elastic material. The use of elastic material can increase the sealing strength between the first contact member 81 and the second contact member 92 or the first contact member 81 and the third contact member 93, and can eliminate the problem of difficult surface-to-surface contact caused by manufacturing and assembly tolerances. Preferably, when the first contact member 81 contacts the second contact member 92, the first contact member 81 and the second contact member 92 are in a mutually compressed state; when the first contact member 81 contacts the second contact member 92, the first contact member 81 and the third contact member 93 are in a mutually compressed state.

[0116] The deflector 22 is disposed on the second wind shielding portion 9 .

[0117] In order to achieve the goal of not blowing the refrigeration airflow on people and blowing it away, taking into account the characteristics of the refrigeration airflow that has sedimentation and the general situation that the hoisting height of the unit is higher than the height of the human body, the angle β between the outlet direction of the first air outlet 12 and the horizontal plane is in the range of -20°≤β≤45°, and when β=0°, the outlet direction of the first air outlet 12 is parallel to the horizontal direction, and when β>0°, the outlet direction of the first air outlet 12 is inclined upward relative to the horizontal plane. Among them, the outlet direction of the first air outlet 12 refers to the main flow direction of the airflow when it flows out of the first air outlet. When the parts of the main frame 10 and / or the air outlet assembly 20 used to form the air supply duct 14 are all planes, the outlet direction of the first air outlet 12 is parallel to the plane. When the parts of the main frame 10 and / or the air outlet assembly 20 used to form the air supply duct 14 are curved surfaces, the outlet direction of the first air outlet 12 refers to the tangent direction of the position where the curved surface has the greatest impact on the airflow.

[0118] Taking the skylight machine of this application as an example, the value of β is adjusted for simulation, and the simulation results are as follows:

[0119]

[0120] From the simulation results, it can be seen that when β is 0°, the horizontal air supply distance reaches the maximum. At this time, there is no phenomenon of cold wind blowing people within the working range. When β increases to 30° (that is, the air outlet direction of the first air outlet 12 is tilted upward relative to the horizontal plane), the air supply distance begins to decrease, and there is no phenomenon of cold wind blowing people. When β continues to increase to 45°, the air supply distance further decreases. When β continues to increase to 46°, the air supply distance further decreases, which basically cannot meet the air supply distance requirements of the ceiling machine, especially for industrial and commercial buildings (such as shopping malls, etc.) that require large-area heat exchange. The air supply distance is too small to meet the needs of large-area heat exchange; when β decreases to -20° (at this time the air outlet direction of the first air outlet 12 is tilted downward relative to the horizontal plane), the air supply distance also begins to decrease, but because the air outlet direction is relatively Because the inclination angle to the horizontal plane is small, the horizontal component of the airflow is much greater than the vertical component during its flow. Ultimately, when the airflow reaches a delivery distance of 4.9m, there is still a certain distance from the ground (4.9m * tan20° = 1.78m. Taking a shop as an example, the shop is 3.9m high, 3.9m - 1.78m = 2.12m. In other words, when β is -20°, the airflow reaches the ground at a height of essentially 2.12m). This distance ensures that the airflow from the overhead hood does not cause a cold draft. When β decreases further to -21°, the delivery distance decreases further (4.8m * tan21° = 1.84m, while 3.9m - 1.84m = 2.06m). The distance between the airflow and the bottom surface also decreases, causing a cold draft. In other words, only when β is within the range of -20° to 45° can the airflow distance of the overhead hood be guaranteed and the cold draft not be caused.

[0121] More preferably, the angle β between the air outlet direction of the first air outlet 12 and the horizontal plane is in the range of 0°≤β≤30°, and when β>0°, the air outlet direction of the first air outlet 12 is inclined upward relative to the horizontal plane.

[0122] The air outlet assembly has a first descending height L1, and the numerical range of the preset height L1 is 15 mm ≤ L1 ≤ 60 mm.

[0123] Taking the overhead crane of the present application as an example, under the premise of ensuring that the air outlet direction of the first air outlet 12 remains unchanged, the value of L1 is adjusted for simulation. The simulation results are as follows:

[0124] L1(mm) <![CDATA[Air volume (m 3 / h)]]> Cooling capacity (kw) Air supply distance (m) 14 1175 11.2 6.5 15 1260 11.4 6.4 20 1416 11.8 6.1 30 1800 12.0 5.2 50 1921 12.2 4.3 60 1937 12.3 4.0 61 1938 12.3 3.9

[0125] From the simulation results, we can see that when L1 is 30mm, although the air volume has not reached the maximum value, the cooling capacity and air supply distance are at the optimal level; when L1 increases to 50mm, the air volume and cooling capacity begin to increase, but the air supply distance begins to decrease; when L1 continues to increase to 60mm, the air volume and cooling capacity continue to increase, and the air supply distance continues to decrease; when L1 continues to increase to 61mm, although the air volume increases, the increase rate begins to decrease, and the cooling capacity does not change compared to when L1 is 60mm, but the air supply distance continues to decrease. , the air supply distance is too small, the wind speed is below 3m / s, and it cannot meet the comfort requirements of the overhead unit; when L1 decreases to 20mm, the air volume and cooling capacity both begin to decrease, and the air supply distance begins to increase; when L1 continues to decrease to 15mm, the air volume and cooling capacity further decrease, and the air supply distance further increases; when L1 continues to decrease to 14mm, the air volume and cooling capacity still further decrease, and the air supply distance increases. At this time, the air volume attenuation is greater than 20%, and the cooling capacity cannot guarantee that the overhead unit can achieve the required heat exchange efficiency, which does not meet the energy-saving principle. In other words, only when L1 is within the range of 15mm to 60mm can the air volume, cooling capacity, and air supply distance of the overhead unit be matched to a reasonable state.

[0126] The air outlet assembly has a first descending height L1, and the numerical range of the preset height L1 is 20 mm ≤ L1 ≤ 50 mm.

[0127] The skylight machine has a first air outlet mode, a second air outlet mode and a third air outlet mode;

[0128] When the skylight unit is in the first air outlet mode, the first air outlet 12 is open and the second air outlet 13 is closed. At this time, the airflow in the air outlet duct 11 is all blown out through the first air outlet 12, that is, horizontal airflow or even oblique upward airflow is formed.

[0129] When the ceiling unit is in the second air outlet mode, the first air outlet 12 is open, and some or all of the second air outlets 13 are open. At this time, part of the airflow in the air outlet duct 11 is blown out through the first air outlet 12, and the remaining part is blown out through the second air outlet 13, thereby achieving surround air supply and improving the uniformity of room temperature. Among them, all the second air outlets 13 are selectively opened according to the required air outlet direction and air volume;

[0130] When the skylight machine is in the third air outlet mode, the first air outlet 12 is closed and part or all of the second air outlet 13 is opened. At this time, the air flow in the air outlet duct 11 is all blown out through the second air outlet 13, forming an oblique downward air outlet or even a vertical downward air outlet.

[0131] When the overhead unit is in cooling mode, the overhead unit is in the first air outlet mode or the second air outlet mode;

[0132] When the skylight unit is in the heating mode, the skylight unit is in the third air outlet mode or the second air outlet mode.

[0133] The main frame 10 includes a frame 15. When the air outlet component 20 is lowered to form the first air outlet 12 between the main frame 10, the air supply duct 14 is formed between the air outlet component 20 and the frame 15. The part of the frame 15 used to form the air supply duct 14 is inclined relative to the horizontal plane. The inclined frame 15 is used to guide the upper part of the airflow in the air supply duct 14, thereby ensuring the air outlet direction of the first air outlet 12.

[0134] The angle range of the inclination angle a formed between the portion of the frame 15 used to form the air supply duct 14 and the horizontal plane is -20°≤a≤45°, and when a=0°, the portion of the frame 15 used to form the air supply duct 14 is parallel to the horizontal direction, and when a>0°, the portion of the frame 15 used to form the air supply duct 14 is inclined upward relative to the horizontal plane. The inclination of the frame 15 is used to change the direction of the air flow in the air supply duct 14, and ultimately achieve the purpose of changing the direction of the air outlet of the first air outlet 12. When a≥0°, it can ensure that the air outlet of the ceiling machine flows in the horizontal direction as much as possible, and when a is between 0° and -20°, although the air flow flows obliquely downward, due to the small inclination angle of the air flow, it can still ensure that the ceiling machine will not blow people.

[0135] Preferably, the portion of the frame 15 forming the air supply duct is tilted upward relative to the horizontal plane, i.e., a > 0°. This causes the air outlet direction of the air supply duct 14 to tilt upward relative to the horizontal plane. The tilted frame 15 allows the air supply duct 14 to tilt upward relative to the horizontal plane, thereby directing the airflow within the air supply duct 14 toward the ceiling as much as possible, increasing the horizontal air outlet distance of the ceiling unit and effectively enhancing the waterfall cooling effect.

[0136] The portion of the air outlet assembly 20 used to form the air supply duct 14 is tilted relative to the horizontal plane. The tilted air outlet assembly 20 is used to guide the lower portion of the airflow in the air supply duct 14 , thereby ensuring the direction of the first air outlet 12 .

[0137] The angle b formed between the portion of the air outlet assembly 20 used to form the air supply duct 14 and the horizontal plane is in the range of -20°≤b≤45°. When b=0°, the portion of the air outlet assembly 20 used to form the air supply duct 14 is parallel to the horizontal direction. When b>0°, the portion of the air outlet assembly 20 used to form the air supply duct 14 is tilted upward relative to the horizontal plane. That is, along the airflow direction, the portion of the air outlet assembly 20 used to form the air supply duct 14 forms an inclined guide surface, thereby enabling the air outlet direction of the air supply duct 14 to tilt upward relative to the horizontal plane. When b≥0°, the air outlet assembly 20 can tilt the air outlet direction of the air supply duct 14 upward relative to the horizontal plane, ensuring that the air outlet of the overhead crane flows in the horizontal direction as much as possible. When b is between 0° and -20°, although the airflow flows obliquely downward, due to the smaller inclination angle of the airflow, it can still ensure that the overhead crane will not blow people.

[0138] Preferably, the portion of the frame 15 used to form the air supply duct and the portion of the air outlet assembly 20 used to form the air supply duct 14 are parallel to each other.

[0139] The air outlet duct 11 has a first end 111 and a second end 112 along the airflow direction. The first air outlet 12 and the second air outlet 13 are both connected to the second end 112. The ratio of the width D1 of the first end 111 to the width D2 of the second air outlet 13 is in the range of 0.75≤D2 / D1≤0.85.

[0140] When the ceiling unit is in heating mode, taking a 5-HP indoor unit as an example, the width D1 of the first end 111 is set to a fixed value of 60 mm, the opening angle of the air guide plate is set to a fixed value of 50°, and the width D2 of the second air outlet is adjusted for simulation.

[0141] D2 / D1 <![CDATA[Air volume (m 3 / h)]]> Air supply distance 0.7 1586 1.0m 0.75 1596 1.0m 0.8 1607 0.8m 0.85 1615 0.3m 0.9 1621 / (The air flow is sucked in by the return air vent and fails to fall)

[0142] According to the experimental results, when D2 / D1 is 0.8, the air volume attenuation is small and the air supply distance is long enough, which is the most ideal. When D2 / D1 increases to 0.85, the air volume begins to increase, but the air supply distance is significantly shortened. When D2 / D1 continues to increase to 0.9, the air supply distance is severely shortened, which is unacceptable. When D2 / D1 decreases to 0.75, the air volume begins to decrease, and the air supply distance reaches its maximum value. When D2 / D1 continues to decrease to 0.7, the air volume attenuation is severe and unacceptable. In other words, under the condition that other conditions remain unchanged, the larger the width D2 of the second air outlet 13, the lower the air speed, and the more susceptible it is to being sucked into the return air outlet of the ceiling fan. Conversely, the smaller the width D2 of the second air outlet 13, the faster the wind speed, the air flow is easy to fall to the ground, and the air supply distance has little effect, but the air volume is small, and the heating effect cannot be guaranteed.

[0143] The air outlet assembly 20 includes an air outlet frame, which is lifted and lowered separately. In other embodiments not shown, the air outlet assembly 20 includes an air outlet frame and a return air panel, the return air panel is provided with a return air outlet, and the air outlet frame is connected to the return air panel and lifts and lowers together.

[0144] 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 hoist with an air supply duct, characterized in that: include: A main frame (10), wherein an air outlet duct (11) is formed in the main frame (10); An air outlet assembly (20), the air outlet assembly (20) being movably mounted on the main frame (10), and the air outlet assembly (20) being lowered to form a first air outlet (12) between the main frame (10); The air outlet component (20) is provided with at least one second air outlet (13), and the second air outlet (13) is communicated with the air outlet duct (11); When the air outlet assembly is lowered to form the first air outlet (12) between the main frame (10), a distance is formed between the air outlet assembly (20) and the main frame (10), and the distance forms an air supply duct (14), one end of the air supply duct (14) is connected to the air outlet duct (11), and the other end of the air supply duct (14) forms the first air outlet (12); The main frame (10) further includes a frame (15); when the air outlet assembly (20) is lowered to form the first air outlet (12) between the main frame (10), the air supply duct (14) is formed between the air outlet assembly (20) and the frame (15); and on the installation plane of the main frame (10), the projection of the air outlet assembly (20) and the projection of the frame (15) at least partially overlap; The first air outlet (12) is capable of discharging air horizontally or obliquely upward by tilting the air outlet component (20), tilting the frame (15), and / or the projection of the air outlet component (20) at least partially overlapping with the frame; The angle β between the air outlet direction of the first air outlet (12) and the horizontal plane is in the range of -20°≤β≤45°, and when β=0°, the air outlet direction of the first air outlet (12) is parallel to the horizontal direction, and when β>0°, the air outlet direction of the first air outlet (12) is inclined upward relative to the horizontal plane.

2. The roof crane according to claim 1, 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).

3. The roof crane according to claim 1, characterized in that: The skylight machine further comprises at least two partition plates (6), all of the partition plates (6) are arranged in the air outlet duct (11), and a flow passage is formed between two adjacent partition plates (6).

4. The roof crane according to claim 1, characterized in that: The skylight machine further includes a lifting mechanism, the lifting mechanism being arranged on the main frame (10), and the air outlet assembly (20) being arranged on the lifting mechanism; The lifting mechanism comprises: A driving device (30); A transmission mechanism is connected to the air outlet assembly (20), the transmission mechanism is drivingly connected to a driving device (30), and the driving device (30) drives the air outlet assembly (20) to rise and fall through the transmission mechanism; The transmission mechanism has a guide portion (52); The guide mechanism (60) and the guide portion (52) are relatively movable in the lifting direction of the air outlet assembly (20). At the same time, the guide mechanism (60) and the guide portion (52) are matched with each other in a horizontal upper limit direction.

5. The overhead crane according to claim 4, characterized in that: The guide mechanism (60) comprises a guide unit (61), wherein the guide unit (61) has two guide members (611) arranged opposite to each other, a guide channel is formed between the two guide members (611), and the guide portion (52) is located in the guide channel.

6. The overhead crane according to claim 5, characterized in that: The transmission mechanism comprises: a gear (40) mounted on the output shaft of the driving device (30); The rack (50) is fixedly connected to the air outlet assembly (20), the rack (50) is meshed with the gear (40), and the driving device (30) drives the air outlet assembly (20) to rise and fall through the cooperation of the gear (40) and the rack (50); the guide portion (52) is located on the rack (50).

7. The overhead crane according to claim 6, characterized in that: The guide portion (52) is a guide column on the rack (50), and two opposite guide members (611) are provided with guide grooves matching the guide columns, and the guide columns are clamped between the two guide members (611) via the guide grooves.

8. The overhead crane according to claim 7, characterized in that: The first side of the rack (50) is provided with meshing teeth (51), and the second side has the guide portion (52); the rack (50) has a mounting groove (55), and the mounting groove (55) is located between the meshing teeth (51) and the guide portion (52); The two guide members (611) of the guide unit (61) are respectively located on both sides of the guide portion (52), and one of the guide members (611) of the guide unit (61) is located in the installation groove (55).

9. The overhead crane according to claim 8, characterized in that: The extension direction of the mounting groove (55) is the lifting direction of the air outlet assembly (20), and the mounting groove (55) has a first end wall (53) located above and a second end wall (54) located below along the lifting direction of the air outlet assembly (20), and the maximum distance between the first end wall (53) and the guide unit (61) is equal to the maximum descending height of the air outlet assembly (20).

10. The overhead crane according to claim 1, characterized in that: The angle β between the air outlet direction of the first air outlet (12) and the horizontal plane is in the range of 0°≤β≤30°, and when β>0°, the air outlet direction of the first air outlet (12) is inclined upward relative to the horizontal plane.

11. The overhead crane according to claim 1, characterized in that: The air outlet assembly (20) has a first descending height L1, and the numerical range of the first descending height L1 is 15 mm ≤ L1 ≤ 60 mm.

12. The overhead crane according to claim 11, characterized in that: The air outlet assembly (20) has a first descending height L1, and the numerical range of the first descending height L1 is 20 mm ≤ L1 ≤ 50 mm.

13. The overhead crane according to claim 1, characterized in that: The skylight machine has a first air outlet mode, a second air outlet mode and a third air outlet mode; When the skylight machine is in the first air outlet mode, the first air outlet (12) is opened and the second air outlet (13) is closed; When the skylight machine is in the second air outlet mode, the first air outlet (12) is opened, and part or all of the second air outlets (13) are opened; When the skylight machine is in the third air outlet mode, the first air outlet (12) is closed, and part or all of the second air outlet (13) is opened.

14. The overhead crane according to claim 13, characterized in that: When the overhead unit is in cooling mode, the overhead unit is in the first air outlet mode or the second air outlet mode; When the skylight unit is in the heating mode, the skylight unit is in the third air outlet mode or the second air outlet mode.

15. The overhead crane according to claim 1, characterized in that: The main frame (10) includes a frame (15); when the air outlet assembly is lowered to form the first air outlet (12) between the main frame (10), the air supply duct (14) is formed between the air outlet assembly (20) and the frame (15); the portion of the frame (15) used to form the air supply duct (14) is tilted relative to a horizontal plane; and / or the portion of the air outlet assembly (20) used to form the air supply duct (14) is tilted relative to a horizontal plane.

16. The overhead crane according to claim 15, characterized in that: The angle range of the inclination angle a formed between the portion of the frame (15) used to form the air supply duct (14) and the horizontal plane is -20°≤a≤45°, and when a=0°, the portion of the frame (15) used to form the air supply duct (14) is parallel to the horizontal direction, and when a>0°, the portion of the frame (15) used to form the air supply duct (14) is inclined upward relative to the horizontal plane; and / or, the angle range of the inclination angle b formed between the portion of the air outlet component (20) used to form the air supply duct (14) and the horizontal plane is -20°≤b≤45°, and when b=0°, the portion of the air outlet component (20) used to form the air supply duct (14) is parallel to the horizontal direction, and when b>0°, the portion of the air outlet component (20) used to form the air supply duct (14) is inclined upward relative to the horizontal plane.

17. The overhead crane according to claim 1, characterized in that: The air outlet duct (11) has a first end (111) and a second end (112) along the airflow direction, the first air outlet (12) and the second air outlet (13) are both connected to the second end (112), and the ratio of the width D1 of the first end (111) to the width D2 of the second air outlet (13) is in the range of 0.75≤D2 / D1≤0.

85.

18. The overhead crane according to claim 1, characterized in that: The air outlet assembly (20) comprises an air outlet frame, and the air outlet frame is independently raised and lowered.

19. The overhead crane according to claim 1, characterized in that: The air outlet assembly (20) comprises an air outlet frame and an air return panel, the air return panel is provided with an air return port, and the air outlet frame is connected to the air return panel and rises and falls together.

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