A combined cooling air supply duct system

Abstract

The present invention discloses a combined cooling air supply duct system, which relates to the field of air conditioning, including a bellows and a docking duct, and also includes: a three-way bin, one of whose openings is connected to the bellows outlet, and the other two openings are respectively connected to an air supply duct and a return air duct, and the air supply duct is connected or disconnected with the docking duct through a lifting component; the return air duct outlets air at the end and is arranged outside the bellows air inlet; a flow guide component is arranged in the three-way bin. The present invention connects the air supply duct with the docking duct, and the flow guide component controls the bellows to be connected only with the air supply duct, thereby supplying cold air to the docking duct; when not needed, the air supply duct is disconnected from the docking duct, and the flow guide component controls the bellows to be connected only with the return air duct, thereby reducing the negative pressure effect of the production equipment on the one hand, and on the other hand, the return air duct guides the cold air back to the bellows air inlet, realizing the self-circulation of the bellows, preventing the bellows from repeated start and stop, and reducing energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning devices, and in particular to a combined cooling air supply duct system. Background Art

[0002] The use of injection molding machines is usually equipped with a cooling air supply duct system, which is mainly used to control the temperature of the mold, prevent the product from deforming or fading due to high temperature in the mold, and ensure the surface finish and dimensional accuracy of the product. The cooling system can accelerate the shaping of the product and facilitate demoulding, thereby improving the production efficiency of the injection molding machine. In addition, the oil and hydraulic oil in the injection molding machine will overheat after long-term use. The cooling system can cool these oils to prevent the equipment from malfunctioning due to overheating. The existing cooling air supply system can basically meet the daily use needs, but there are still some shortcomings that need to be improved.

[0003] Patent document CN118980140A, published on November 19, 2024, discloses a purification air supply unit for workshops, which belongs to the technical field of air purification devices, including an air intake mechanism, a purification mechanism, a cleaning mechanism, a pressure relief mechanism and a collection bin, wherein the air intake mechanism is installed indoors in the workshop, and the other end of the air supply mechanism is connected to the outdoors, a purification mechanism is provided on one side of the air supply mechanism, and the purification mechanism is connected to the inside of the air supply mechanism through a connecting pipe, and a collection bin is provided at the bottom of the purification mechanism. Beneficial effects of this application: Excess indoor gas is effectively transported to the interior of the heat exchange bin through the exhaust fan and the first pipeline, and the indoor cold air contacts and cools the conical cavity after entering the heat exchange bin, and the external hot air exchanges heat with the cooled conical cavity, and the system not only reduces the temperature fluctuation of the indoor airflow, but also improves the comfort of the air supply unit during use, providing a more stable and comfortable air flow for the indoor environment.

[0004] In actual use, the cooling air supply system operates on demand. When the production equipment needs air supply, the production equipment is supplied with air normally. When the production equipment does not need air supply, the air supply system needs to suspend air supply. With the existing air duct setting, if the air supply is suspended, the continuous operation of the production equipment will cause negative pressure in the sealed air duct, resulting in increased energy consumption of the production equipment or other adverse effects. In addition, if the air supply system is suspended in a shutdown manner, frequent start and stop will also increase the operating energy consumption of the air supply system. Therefore, a combined cooling air supply duct system is urgently needed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a combined cooling air supply duct system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A combined cooling air supply duct system includes a bellows and a docking duct, and also includes: a three-way bin, one opening of which is connected to the bellows outlet, and the other two openings of which are respectively connected to the supply air duct and the return air duct, and the supply air duct is connected or disconnected with the docking duct by a lifting component; the return air duct outlets air at the end and is arranged on the outside of the bellows inlet; a guide component, which is arranged in the three-way bin, and when the supply air duct is connected to the docking duct, guides the three-way bin to connect the bellows only to the supply air duct, and when the supply air duct is disconnected from the docking duct, guides the three-way bin to connect the bellows only to the return air duct.

[0008] Preferably, it also includes a bracket, the lifting assembly includes a docking plate that is lifted and lowered on the bracket, the air supply duct is connected to the docking plate at one end away from the bellows, a threaded sleeve is rotatably arranged on the bracket, a screw rod is penetrated and connected to the threaded sleeve through the inner thread, the lower end of the screw rod is connected to the docking plate, and a first driving assembly for controlling the rotation of the threaded sleeve is arranged on the bracket.

[0009] Preferably, the first driving assembly comprises a driven wheel fixedly sleeved on the outside of the threaded sleeve, and a driving wheel connected to the driven wheel via a belt is rotatably provided on the bracket.

[0010] Preferably, an insertion tube is axially movably provided in the docking disk, a rotary sleeve is threadedly connected to the outer side of the insertion tube, the outer wall of the rotary sleeve is rotatably connected to the docking disk through a coil spring, a connecting seat rotatably connected to the screw rod is fixedly provided at the upper end of the docking disk, a first bevel gear is coaxially connected to the lower end of the screw rod, and a bevel gear ring meshing with the first bevel gear is provided on the outer wall of the rotary sleeve.

[0011] Preferably, the docking pipe inlet is provided with an abutment ring matching the insertion pipe, and a sealing ring is provided on the outer side of the abutment ring facing the docking pipe inlet.

[0012] Preferably, the guide assembly includes a swivel column rotatably arranged in the three-way bin, a guide plate is fixedly arranged on the swivel column, and a second driving assembly for driving the swivel column to rotate is arranged on the outside of the three-way bin. When the second driving assembly drives the swivel column to rotate, the guide plate has a first position for blocking the three-way bin from connecting to the return air duct opening and a second position for blocking the three-way bin from connecting to the supply air duct opening.

[0013] Preferably, the second drive assembly includes a telescopic drive unit arranged on the outer wall of the three-way warehouse, the rotating shaft of the rotary column rotates through the three-way warehouse and is connected to a rocker arm, a sliding pin is movably arranged on the rocker arm, and the output end of the telescopic drive unit is fixedly connected to the sliding pin.

[0014] Preferably, a flap is rotatably provided on the guide plate, and the flap is linked with the sliding pin through a linkage assembly. When the guide plate is fixed in the first position or the second position, the flap is coplanar with the guide plate. During the switching process of the guide plate between the two positions, the flap rotates to allow the guide plate to ventilate.

[0015] Preferably, the linkage assembly includes a linkage shaft rotatably arranged in a rotating column, the linkage shaft is connected to the rotating shaft of the flap through a bevel gear transmission, a sleeve fixedly connected to a sliding pin is movably arranged in the rocker arm, a linkage column is spirally connected in the sleeve, and the linkage column is connected to one end of the linkage shaft through a bevel gear transmission.

[0016] Preferably, a sliding protrusion is provided on the linkage column, and a sliding groove matching the sliding protrusion is provided in the sleeve. A portion of the sliding groove close to the linkage shaft is spirally arranged around the axial direction of the sleeve, while the other portion is arranged parallel to the axial direction of the sleeve.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The combined cooling air supply duct system controls the connection or disconnection of the air supply duct and the docking duct by setting a lifting component. When the production equipment needs it, the air supply duct and the docking duct are connected, and the guide component controls the bellows to be connected only to the air supply duct, thereby supplying cold air to the docking duct; when not needed, the air supply duct and the docking duct are disconnected, and the guide component controls the bellows to be connected only to the return air duct, thereby reducing the negative pressure effect of the production equipment on the one hand, and guiding the return air duct to guide the cold air back to the air inlet of the bellows on the other hand, realizing the self-circulation of the bellows, preventing the bellows from repeated start and stop, and reducing energy consumption.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0023] Figure 2A schematic diagram of the bellows structure provided by an embodiment of the present invention;

[0024] Figure 3 An overall schematic diagram of the docking structure of the bellows and the docking pipe provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a bracket provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a front cross-sectional structure provided by an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 7 The embodiment of the present invention provides Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 8 A schematic diagram of the structure of an insertion tube provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of a flow guide assembly provided in an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of a cross-sectional structure of a rotating column provided in an embodiment of the present invention;

[0032] Fig.11 The embodiment of the present invention provides Fig.10 Schematic diagram of the enlarged structure at C in the middle;

[0033] Fig.12 A schematic diagram of the structure of a linkage column provided in an embodiment of the present invention;

[0034] Fig.13 A schematic top view of the cross-sectional structure of a swirl column and a guide plate provided in an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Bellows; 2. Docking duct; 3. Three-way bin; 4. Air supply duct; 5. Return air duct; 6. Bracket; 7. Docking plate; 8. Threaded sleeve; 9. Screw; 10. Driven wheel; 11. Belt; 12. Driving wheel; 13. Insert tube; 14. Rotary sleeve; 15. Coil spring; 16. Connecting seat; 17. First bevel gear; 18. Bevel gear ring; 19. Abutment ring; 20. Sealing ring; 21. Rotary column; 22. Guide plate; 23. Telescopic drive unit; 24. Rocker; 25. Sliding pin; 26. Flap; 27. Linkage shaft; 28. Sleeve; 29. ​​Linkage column; 30. Sliding cam; 31. Sliding groove; 32. Second bevel gear; 33. Third bevel gear; 34. Fourth bevel gear; 35. Fifth bevel gear. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] See also Figure 1-13 A combined cooling air supply duct system provided by an embodiment of the present invention includes a bellows 1 and a docking duct 2, and also includes: a three-way bin 3, one of whose openings is connected to the air outlet of the bellows 1, and the other two openings are respectively connected to an air supply duct 4 and a return air duct 5, the air supply duct 4 is connected or disconnected with the docking duct 2 by a lifting component; the return air duct 5 has an air outlet at the end and is arranged outside the air inlet of the bellows 1; a guide component, which is arranged in the three-way bin 3, when the air supply duct 4 is connected to the docking duct 2, the three-way bin 3 guides the bellows 1 to only connect with the air supply duct 4, and when the air supply duct 4 is disconnected from the docking duct 2, the three-way bin 3 guides the bellows 1 to only connect with the return air duct 5.

[0039] Specifically, the bellows 1 is provided with an air inlet and an air outlet. The bellows 1 is used to inhale external air through the air inlet, and send the air to the air outlet after being cooled to a specified temperature internally; the docking duct 2 is used to connect the thermal management air duct system of the production equipment; the use of the docking duct 2 follows the mold in the injection molding machine production equipment it matches. During the opening and closing process of the mold, the docking duct 2 will be driven to rise and fall, so the connection between the air supply duct 4 and the docking duct 2 is disconnected. It is more appropriate to adopt a lifting method. If a valve and a tee structure is adopted, the tee is a fixed position structure, which will interfere with the docking duct 2 that has a lifting movement in actual production; three ports are provided on the tee bin 3, one of which is docked with the air outlet of the bellows 1, and the tee bin 3 is fixed on the bellows 1; The air duct 4 is a non-rigid tube, preferably a corrugated tube, a rubber tube, etc., with a margin for bending and expansion and contraction deformation; the return air duct 5 is overlapped and arranged on the bellows 1, and the end away from the connection to the three-way bin 3 is the extended end, and the end of the return air duct 5 is correspondingly arranged on the outside of the air inlet of the bellows 1, and an opening is arranged on the side of this end close to the bellows 1 for air outlet, so that the air outlet of the return air duct 5 remains connected to the air inlet of the bellows 1; the lifting component controls the lifting of the end of the supply air duct 4 away from the three-way bin 3 to switch it to the docking pipe 2 for connection or misalignment for disconnection; the guide component switches and blocks the opening of the three-way bin 3 connecting the supply air duct 4 or the opening of the return air duct 5 in the three-way bin 3 to achieve that the bellows 1 is only connected to the return air duct 5 or the bellows 1 is only connected to the supply air duct 4. In actual use of the present technical solution, when the production equipment needs it, the lifting component controls the air supply duct 4 to be connected with the docking duct 2, and the flow guide component controls the bellows 1 to be connected only with the air supply duct 4, thereby supplying cold air to the docking duct 2; and when it is not needed, the lifting component controls the air supply duct 4 to be disconnected from the docking duct 2, and the flow guide component controls the bellows 1 to be connected only with the return air duct 5, thereby, on the one hand, reducing the negative pressure effect of the production equipment, and on the other hand, the return air duct 5 guides the cold air back to the air inlet of the bellows 1, thereby realizing the self-circulation of the bellows 1, preventing the bellows 1 from repeated start and stop, and reducing energy consumption.

[0040] Compared with the prior art, a combined cooling air supply duct system proposed in an embodiment of the present invention controls the connection or disconnection of the air supply duct 4 and the docking duct 2 by setting a lifting component. When the production equipment needs it, the air supply duct 4 is connected to the docking duct 2, and the guide component controls the bellows 1 to be connected only to the air supply duct 4, thereby supplying cold air to the docking duct 2; when not needed, the air supply duct 4 is disconnected from the docking duct 2, and the guide component controls the bellows 1 to be connected only to the return air duct 5, thereby, on the one hand, reducing the negative pressure effect generated by the production equipment, and on the other hand, the return air duct 5 guides the cold air back to the air inlet of the bellows 1, thereby realizing the self-circulation of the bellows 1, preventing the bellows 1 from repeated start and stop, and reducing energy consumption.

[0041] As a preferred technical solution of this embodiment, it also includes a bracket 6, a lifting component includes a docking plate 7 lifted and lowered on the bracket 6, the air supply duct 4 is connected to the docking plate 7 at one end away from the bellows 1, a threaded sleeve 8 is rotatably provided on the bracket 6, a screw 9 is penetrated and connected with the inner thread of the threaded sleeve 8, and the lower end of the screw 9 is connected to the docking plate 7, and a first driving component for controlling the rotation of the threaded sleeve 8 is provided on the bracket 6. Specifically, the bellows 1 is fixedly arranged at a position adjacent to the production equipment. Preferably, the bracket 6 can be fixed on the production equipment; the bracket 6 is frame-shaped, and the docking plate 7 is arranged inside the bracket 6 On the side, the docking plate 7 includes a tubular portion and a convex edge portion connected to one end of the tubular portion, the tubular portion is docked with one end of the air supply duct 4 away from the three-way chamber 3, a sliding seat is arranged on the convex edge portion, and the vertical portion of the bracket 6 is provided with a slide rail slidably connected to the slide seat, thereby enabling the docking plate 7 to be lifted and lowered smoothly; the upper horizontal portion of the bracket 6 is rotatably connected to the threaded sleeve 8, and the screw 9 is connected to the docking plate 7 to limit the rotation, and then when the first driving component controls the threaded sleeve 8 to rotate, the screw 9 and the threaded sleeve 8 have a threaded feeding effect, so that the screw 9 moves axially, that is, the screw 9 drives the docking plate 7 to rise and fall. Preferably, the interface of the docking duct 2 corresponds to the highest position of the lifting stroke of the docking plate 7.

[0042] As the preferred technical solution of this embodiment, the first driving component includes a driven wheel 10 fixedly sleeved on the outside of the threaded sleeve 8, and a driving wheel 12 connected to the driven wheel 10 through a belt 11 is rotatably provided on the bracket 6. Specifically, the driving wheel 12 can be manually operated or automatically operated. When the driving wheel 12 is manually operated, the driving wheel 12 is coaxially connected to the crank, and the crank is manually operated to drive the driving wheel 12. The driving wheel 12 then drives the driven wheel 10 through the belt 11, and the driven wheel 10 drives the threaded sleeve 8 to rotate to realize the threaded transmission between the threaded sleeve 8 and the screw 9, so that the screw 9 drives the docking plate 7 to rise and fall; when the driving wheel 12 is automatically operated, a servo motor is installed on the bracket 6, and the output end of the servo motor is coaxially connected to the driving wheel 12, and then the servo motor can be started and stopped to control the rise and fall of the docking plate 7 in the same way as the above-mentioned transmission process.

[0043] In another embodiment of the present invention, an insertion tube 13 is axially movably provided in the docking disk 7, and a rotary sleeve 14 is threadedly connected to the outer side of the insertion tube 13. The outer wall of the rotary sleeve 14 is rotatably connected to the docking disk 7 through a coil spring 15. A connecting seat 16 rotatably connected to the screw rod 9 is fixedly provided on the upper end of the docking disk 7, and a first bevel gear 17 is coaxially connected to the lower end of the screw rod 9. A bevel gear ring 18 meshing with the first bevel gear 17 is provided on the outer wall of the rotary sleeve 14. Specifically, a key block is provided on the inner wall of the docking disk 7, and a key groove matching the key block is provided on the outer wall of the insertion tube 13 along its axial direction. The setting of the key block and the key groove ensures that the insertion tube 13 moves axially along the docking disk 7, and then when the docking disk 7 corresponds to the docking pipe 2, the axial movement of the insertion tube 13 is The insertion tube 13 should be extended into or out of the docking pipe 2; the tubular part of the docking disk 7 is disconnected in the middle and connected with a rotating sleeve 14, the inner wall of the rotating sleeve 14 is provided with a thread, the outer wall of the insertion tube 13 is provided with a thread, and the threaded connection between the rotating sleeve 14 and the insertion tube 13 satisfies free sliding and is not affected by the self-locking of the thread; the setting of the coil spring 15 keeps hindering the rotation of the rotating sleeve 14 relative to the docking disk 7, thereby keeping the insertion tube 13 in a state of being retracted into the docking disk 7 under the threaded transmission action of the rotating sleeve 14 and the insertion tube 13; a gap is left between the connecting seat 16 and the outer side of the rotating sleeve 14, the lower end of the screw 9 rotates through the connecting seat 16 and extends into the above gap, and the first bevel gear 17 is limited in the above gap to keep meshing with the bevel gear ring 18. In actual use of the present technical solution, when the docking disc 7 needs to correspond to the docking pipe 2, the first driving assembly drives the threaded sleeve 8 to rotate. At this time, the rotating sleeve 14 is limited by the coil spring 15 and does not rotate, that is, the screw 9 is limited to rotate by the first bevel gear 17 and the bevel gear ring 18, and the screw 9 and the rotating threaded sleeve 8 have a thread feeding effect, so that the screw 9 drives the docking disc 7 to rise. When the docking disc 7 rises to the highest position, it can correspond to the docking pipe 2. The first driving assembly continues to drive the threaded sleeve 8 to rotate in the same direction. Since the screw 9 cannot continue to rise at this time, the screw 9 rotates with the threaded sleeve 8, and the screw 9 drives the first bevel gear 17 to rotate, and then drives the rotating sleeve 14 to rotate through the bevel gear ring 18. At this time, on the one hand, The coil spring 15 is deformed and stores elastic potential energy. On the other hand, the insertion tube 13 and the rotating rotary sleeve 14 are threadedly fed and transmitted to extend out of the docking plate 7, that is, the insertion tube 13 is inserted into the docking pipe 2 to achieve docking, thereby ensuring ventilation and sealing and saving energy. When the docking plate 7 needs to be separated from the docking pipe 2, the first drive assembly drives the threaded sleeve 8 to reverse, and the coil spring 15 first releases the elastic potential energy, causing the screw 9 to rotate for a period of time, and then transmits it to the insertion tube 13 to retract into the docking plate 7, that is, the insertion tube 13 leaves the docking pipe 2. After the coil spring 15 finishes releasing the potential energy, the screw 9 starts to be threadedly fed and transmitted with the threaded sleeve 8, that is, the screw 9 drives the docking plate 7 to descend to be dislocated and separated from the docking pipe 2.

[0044] As a preferred technical solution of this embodiment, an abutment ring 19 matching the insertion tube 13 is provided at the inlet of the docking pipe 2, and a sealing ring 20 is provided on the outer side of the abutment ring 19 toward the inlet of the docking pipe 2. Specifically, when the insertion tube 13 is fully extended into the docking pipe 2, the sealing ring 20 on the abutment ring 19 can be abutted, thereby further ensuring the docking sealing.

[0045] In another embodiment of the present invention, the air guide assembly includes a swivel column 21 rotatably arranged in the three-way bin 3, a guide plate 22 is fixedly arranged on the swivel column 21, and a second driving assembly for driving the swivel column 21 to rotate is arranged on the outer side of the three-way bin 3. When the second driving assembly drives the swivel column 21 to rotate, the guide plate 22 has a first position for blocking the opening of the three-way bin 3 connecting to the return air duct 5 and a second position for blocking the opening of the three-way bin 3 connecting to the air supply duct 4. Specifically, the three-way bin 3 is preferably in a rectangular bin shape; the two openings of the three-way bin 3 connecting the wind box 1 and the air supply duct 4 are arranged opposite to each other, and the other opening for connecting the return air duct 5 is arranged at the top of the three-way bin 3. The swirl column 21 is arranged near the top of the three-way bin 3 and near one side of the air supply duct 4, and the swirl column 21 is axially horizontal and vertical to guide the ventilation of the bellows 1 to the air supply duct 4; the guide plate 22 is a rectangular plate, and the first position of the guide plate 22 is to rotate upward to block the end of the return air duct 5 connecting the three-way bin 3 near the horizontal position. At this time, the two openings of the three-way bin 3 connecting the bellows 1 and the air supply duct 4 are connected; the second position of the guide plate 22 is to rotate downward by no more than 90°, with the free end against the inner bottom surface of the three-way bin 3 to block the opening of the air supply duct 4 connecting the three-way bin 3. At this time, the two openings of the three-way bin 3 connecting the bellows 1 and the return air duct 5 are connected.

[0046] As a preferred technical solution of this embodiment, the second drive assembly includes a telescopic drive unit 23 arranged on the outer wall of the three-way warehouse 3, the rotating shaft of the swivel column 21 rotates through the three-way warehouse 3 and is connected to the rocker 24, and a sliding pin 25 is movably arranged on the rocker 24. The output end of the telescopic drive unit 23 is fixedly connected to the sliding pin 25. Specifically, the telescopic drive unit 23 can be preferably a cylinder or a hydraulic cylinder; the output end of the telescopic drive unit 23 performs telescopic movement, and the rotation of the swivel column 21 drives the rocker 24 to swing. The sliding pin 25 is arranged, so that the telescopic movement of the output end of the telescopic drive unit 23 can be driven by the sliding pin 25 and make The sliding pin 25 slides on the rocker arm 24 to drive the rocker arm 24 to rotate without interference, that is, to drive the swivel column 21 to rotate; the two ends of the rotation range of the swivel column 21 correspondingly drive the guide plate 22 to rotate in the first position and the second position; the output end of the telescopic drive unit 23 is telescopically set in a horizontal position, and when the guide plate 22 is between the first position and the second position, the corresponding rocker arm 24 swings down and is in a vertical position, thereby, when the guide plate 22 rotates to the first position and the second position, the angle change of the rocker arm 24 is consistent with the vertical position of the swing down, and accordingly, the relative sliding range of the sliding pin 25 on the rocker arm 24 is consistent.

[0047] When the guide plate 22 independently switches the guide, when it switches to the middle position and the air volume guided to the supply air duct 4 and the return air duct 5 is the same, the guide plate 22 is prone to vibrate and generate noise. In addition, the guide plate 22 has a large rotational resistance during the initial time of switching between the two positions.

[0048] As a preferred technical solution of this embodiment, a flap 26 is rotatably provided on the guide plate 22, and the flap 26 is linked with the sliding pin 25 through a linkage assembly. When the guide plate 22 is fixed in the first position or the second position, the flap 26 is coplanar with the guide plate 22. During the switching process of the guide plate 22 between the two positions, the flap 26 rotates to allow the guide plate 22 to ventilate. Specifically, the flap 26 is axially perpendicular to the axial direction of the rotary column 21; multiple flaps 26 can be provided, and the length range of the flap 26 can be limited to the caliber range of the return air duct 5 when the guide plate 22 is in the first position, thereby avoiding interference; the guide plate 22 is fixed in the second position When the guide plate 22 is in the first position or the second position, the flap 26 is coplanar with the guide plate 22, thereby ensuring that the overall blocking range of the guide plate 22 is effective, that is, the blocking of the opening of the three-way bin 3 connecting the supply air duct 4 or the return air duct 5 is effective; when the guide plate 22 is switching its position, the swivel column 21 rotates, the sliding pin 25 slides relative to the rocker rod 24, and then the flap 26 is rotated through the linkage assembly, thereby opening the guide plate 22, greatly reducing the rotational resistance of the guide plate 22 in the initial stage of position switching, and the force area of ​​the guide plate 22 is reduced, and the wind volume change is disturbed, so that vibration caused by the average transition of the wind volume will not occur.

[0049] As a preferred technical solution of this embodiment, the linkage assembly includes a linkage shaft 27 rotatably arranged in the rotary column 21, the linkage shaft 27 is connected to the rotating shaft of the flap 26 through a bevel gear transmission method, a sleeve 28 fixedly connected to the sliding pin 25 is movably arranged in the rocker 24, a linkage column 29 is spirally connected in the sleeve 28, and the linkage column 29 is connected to one end of the linkage shaft 27 through a bevel gear transmission method. Specifically, a second bevel gear 32 is coaxially connected to the linkage shaft 27, and the rotating shaft of the flap 26 rotates and extends into the rotary column 21 and is coaxially connected to a third bevel gear 33 meshing with the second bevel gear 32; the linkage column 29 is rotatably connected to the rocker 24, one end of the linkage shaft 27 rotates and extends into the rocker 24 and is coaxially connected to a fourth bevel gear 34, and the end of the linkage column 29 away from the sleeve 28 is coaxially connected to A fifth bevel gear 35 meshing with the fourth bevel gear 34; the axial direction of the sleeve 28 coincides with the axial direction of the linkage column 29 and intersects perpendicularly with the axial direction of the linkage shaft 27; a sliding protrusion 30 is provided on the linkage column 29, and a sliding groove 31 matching the sliding protrusion 30 is provided in the sleeve 28, a portion of the sliding groove 31 close to the linkage shaft 27 is spirally arranged around the axial direction of the sleeve 28, and the other portion is arranged parallel to the axial direction of the sleeve 28; within the movable range of the sliding pin 25, the sleeve 28 is driven to move axially, and then the linkage between the sleeve 28 and the linkage column 29 is triggered through the sliding protrusion 30 and the sliding groove 31, the transmission of the spiral part of the sliding protrusion 30 and the sliding groove 31 can be transmitted to the flap 26 to rotate 90°, and the transmission of the parallel part of the sliding protrusion 30 and the sliding groove 31 can keep the flap 26 in the position of rotating 90°. In the present technical solution, the telescopic drive unit 23 drives the rocker arm 24 to swing without interference through the sliding of the sliding pin 25, thereby driving the rotary column 21 and the guide plate 22 to rotate and switch positions; at the same time, the sliding of the sliding pin 25 can drive the sleeve 28 to move axially, and then through the linkage between the sliding protrusion 30 and the sliding groove 31, the linkage column 29 is triggered to rotate, thereby linking to the rotation of the flap 26, thereby reducing the pressure of the guide plate 22 switching position when the three-way warehouse 3 is in the ventilation state, and disrupting the ventilation flow, avoiding the problem of vibration generating noise.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A combined cooling air supply duct system, comprising a wind box (1) and a docking duct (2), characterized in that: Also includes: A three-way bin (3), one of whose openings is connected to the air outlet of the wind box (1), and whose other two openings are respectively connected to an air supply duct (4) and an air return duct (5); the air supply duct (4) is connected or disconnected with the docking duct (2) through the control of a lifting component; the return air duct (5) has an air outlet at the end and is arranged outside the air inlet of the wind box (1); A flow guide component is arranged in the three-way chamber (3), and when the air supply duct (4) is connected to the docking duct (2), the three-way chamber (3) is guided to connect the wind box (1) only to the air supply duct (4), and when the air supply duct (4) is disconnected from the docking duct (2), the three-way chamber (3) is guided to connect the wind box (1) only to the return air duct (5); It also comprises a bracket (6), the lifting assembly comprises a docking plate (7) which is lifted and lowered on the bracket (6), the end of the air supply duct (4) away from the bellows (1) is connected to the docking plate (7), a threaded sleeve (8) is rotatably arranged on the bracket (6), a screw rod (9) is connected to the threaded sleeve (8) through the internal thread, the lower end of the screw rod (9) is connected to the docking plate (7), and a first driving assembly for controlling the rotation of the threaded sleeve (8) is arranged on the bracket (6); An insertion tube (13) is axially movably arranged inside the docking disk (7), a rotary sleeve (14) is threadedly connected to the outer side of the insertion tube (13), the outer wall of the rotary sleeve (14) is rotatably connected to the docking disk (7) via a coil spring (15), a connecting seat (16) rotatably connected to the screw rod (9) is fixedly arranged at the upper end of the docking disk (7), a first bevel gear (17) is coaxially connected to the lower end of the screw rod (9), and a bevel gear ring (18) meshing with the first bevel gear (17) is arranged on the outer wall of the rotary sleeve (14).

2. The combined cooling air supply duct system according to claim 1, characterized in that: The first driving assembly comprises a driven wheel (10) fixedly sleeved on the outside of a threaded sleeve (8), and a driving wheel (12) rotatably arranged on the bracket (6) and connected to the driven wheel (10) via a belt (11).

3. The combined cooling air supply duct system according to claim 1, characterized in that: The inlet of the docking pipe (2) is provided with an abutment ring (19) matching the insertion pipe (13), and the outer side of the abutment ring (19) facing the inlet of the docking pipe (2) is provided with a sealing ring (20).

4. The combined cooling air supply duct system according to claim 1, characterized in that: The flow guide assembly comprises a swivel column (21) rotatably arranged in the three-way bin (3), a flow guide plate (22) being fixedly arranged on the swivel column (21), and a second driving assembly for driving the swivel column (21) to rotate is arranged outside the three-way bin (3), and when the second driving assembly drives the swivel column (21) to rotate, the flow guide plate (22) has a first position for shielding the opening of the three-way bin (3) connecting to the return air duct (5) and a second position for shielding the opening of the three-way bin (3) connecting to the supply air duct (4).

5. The combined cooling air supply duct system according to claim 4, characterized in that: The second driving assembly comprises a telescopic driving unit (23) arranged on the outer wall of the three-way bin (3); the rotating shaft of the rotating column (21) rotates through the three-way bin (3) and is connected to a swing rod (24); a sliding pin (25) is movably arranged on the swing rod (24); and the output end of the telescopic driving unit (23) is fixedly connected to the sliding pin (25).

6. The combined cooling air supply duct system according to claim 5, characterized in that: A flap (26) is rotatably provided on the guide plate (22), and the flap (26) is linked to the sliding pin (25) through a linkage assembly. When the guide plate (22) is fixed at a first position or a second position, the flap (26) is coplanar with the guide plate (22). When the guide plate (22) is switched between the two positions, the flap (26) rotates to allow air to flow through the guide plate (22).

7. The combined cooling air supply duct system according to claim 6, characterized in that: The linkage assembly comprises a linkage shaft (27) rotatably arranged in a rotary column (21), the linkage shaft (27) being connected to a rotation shaft of a flap (26) by means of a bevel gear transmission, a sleeve (28) fixedly connected to a sliding pin (25) being movably arranged in the rocker arm (24), a linkage column (29) being spirally connected in the sleeve (28), and the linkage column (29) being connected to one end of the linkage shaft (27) by means of a bevel gear transmission.

8. The combined cooling air supply duct system according to claim 7, characterized in that: The linkage column (29) is provided with a sliding protrusion (30), and the sleeve (28) is provided with a sliding groove (31) matching the sliding protrusion (30). A portion of the sliding groove (31) close to the linkage shaft (27) is spirally arranged around the axial direction of the sleeve (28), while another portion is arranged parallel to the axial direction of the sleeve (28).

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