A supermarket HVAC structure

Abstract

This application relates to the technical field of heating and ventilation (HVAC), disclosing a supermarket HVAC structure comprising an air supply duct and a filter. The air supply duct includes a connecting pipe and a reversing pipe. The reversing pipes are provided with two reversing pipes, both of which are connected to the connecting pipe. A reversing seat is provided at the connecting point of the two reversing pipes within the air supply duct, and is used to block the communication path between one of the reversing pipes and the connecting pipe. The filter is detachably connected to the reversing pipe. This application can improve the customer experience in supermarkets.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC, and in particular to a HVAC structure for a supermarket. Background Art

[0002] At present, HVAC structures are installed in supermarkets. The HVAC structures include HVAC and air ducts. The air ducts send air from the outside into the HVAC, convert it, and then send it indoors to achieve heating, ventilation and air conditioning.

[0003] Filters are typically installed at the inlet and outlet of air ducts to filter the airflow. These filters need to be replaced periodically to ensure effective filtering. When replacing the filters, the HVAC system must be shut down to prevent dust from entering the ducts due to the airflow. However, supermarkets operate for extended periods, and some even operate 24 hours a day. Shutting down the HVAC system can cause fluctuations in airflow and temperature within the supermarket, potentially affecting customers' comfort. Summary of the Invention

[0004] In order to improve the customer experience in the supermarket, the present application provides a supermarket HVAC structure.

[0005] This application provides a supermarket HVAC structure, which adopts the following technical solutions:

[0006] A supermarket HVAC structure includes an air supply duct and a filter. The air supply duct includes a connecting pipe and a reversing pipe. There are two reversing pipes, both of which are connected to the connecting pipe. The air supply duct has a reversing seat at the connection point between the two reversing pipes. The reversing seat is located in the air supply duct and is used to cut off the communication path between one of the reversing pipes and the connecting pipe; the filter is detachably connected to the reversing pipe.

[0007] By adopting the above technical solution, the reversing seat is moved to block one of the reversing tubes, so that the filter in the reversing tube at the blocked position can be replaced, and at the same time, the air flow flows between the unblocked reversing tube and the connecting tube, that is, the filter is not easily affected by the air flow when replacing the filter, so there is no need to shut down the HVAC when replacing the filter, thereby improving the customer experience in the supermarket.

[0008] Optionally, a connecting portion is provided between the sides of the two reversing tubes that are close to each other, so that a movable space is formed between the sides of the two reversing tubes that are close to each other, and a travel seat is provided on the connecting portion that moves along its length direction, and the travel seat has a portion that penetrates the connecting portion and enters the air supply pipe;

[0009] The reversing seat is provided with a travel groove inclined relative to the moving direction of the travel seat. When the travel seats are respectively moved to abut against the two ends of the travel groove away from each other, the reversing seat respectively blocks the two reversing tubes.

[0010] By adopting the above technical solution, the travel seat is moved in the activity space, and the reversing seat in the air supply pipe is driven to move through the cooperation between the travel seat and the travel groove.

[0011] Optionally, a mounting seat is further included, which corresponds one-to-one to the reversing tube, is detachably connected to the filter, and is slidably connected to the reversing tube along the extension direction of the reversing tube so as to be able to bring the filter out of the reversing tube.

[0012] By adopting the above technical solution, the mounting seat moves to bring the filter out of the reversing tube, so that the filter can be replaced outside the reversing tube, thereby improving the convenience of replacing the filter.

[0013] Optionally, it further includes a base, the base corresponding to the reversing tube one-to-one, the base connected to the mounting seat, and the base is located on the side of the filter away from the connecting tube, the base includes,

[0014] A bottom frame encloses and forms a communication cavity connecting the reversing tube and the external environment;

[0015] There are multiple blades connected to the bottom frame and located in the communication cavity, with gaps between adjacent blades.

[0016] By adopting the above technical solution, the filtering gaps formed between the blades can disperse and filter the airflow.

[0017] Optionally, the blades are rotatably connected to the base frame, and a plurality of the blades are distributed along a straight line; a synchronization member is provided between the base frame and the blades, and the synchronization member is used to drive the blades of the same base frame to rotate synchronously;

[0018] A linkage mechanism is provided between the bottom frame and the connected mounting seat, and the linkage mechanism cooperates with the synchronizer so that when the reversing seat cuts off the communication path between the reversing tube and the connecting tube, the reversing seat drives the linkage mechanism to move, and the linkage mechanism drives the synchronizer to move, so that the blades on the corresponding base rotate until they abut against each other in sequence, so as to close the communicating cavity.

[0019] By adopting the above technical solution, through the cooperation of the linkage mechanism and the synchronizer, when the reversing seat blocks the reversing tube, the blades corresponding to the reversing tube rotate at the same time to block the communicating cavity, thereby making it more convenient to clean the blades. After the filter is replaced, it is enclosed between the reversing seat and the base, so that external dust is not easy to enter the reversing tube while the new filter is waiting to be used, thereby increasing the service life of the filter.

[0020] Optionally, the blade is connected to a rotating shaft extending into the bottom frame to rotate the blade, and the synchronizer includes a gear and a rack, the gear is connected to the rotating shaft, the rack slides in the bottom frame, and the rack simultaneously engages with all the gears in the same bottom frame.

[0021] By adopting the above technical solution, the rack is moved to drive the gear meshing with the rack to rotate, thereby driving the blades in the same bottom frame to rotate synchronously.

[0022] Optionally, the linkage mechanism includes:

[0023] A plug-in socket, arranged on the side of the reversing seat facing the mounting seat;

[0024] A first linkage seat moves in the mounting seat along the moving direction of the reversing seat;

[0025] A first restoring member is provided in the mounting seat and is used to give the first linkage seat a tendency to move toward the direction of the reversing seat;

[0026] The second linkage seat is located between the first linkage seat and the rack, moves in the mounting seat along a direction perpendicular to the movement direction of the reversing seat, and has a first guide inclined surface facing the first linkage seat and a second guide inclined surface facing the rack;

[0027] A second restoring member is provided in the mounting seat and is used to allow the second linkage seat to move toward the first linkage seat;

[0028] a third restoring member, disposed in the bottom frame, for imparting a tendency for the rack to move toward the second linkage seat;

[0029] Wherein, the mounting seat is provided with a through slot for the plug-in seat to enter the mounting seat, the through slot is opposite to the first linkage seat and extends along the extending direction of the reversing tube.

[0030] By adopting the above technical solution, when the plug-in seat enters the mounting seat from the through slot, the blocking seat closes the reversing tube, driving the first linkage seat to move. The first linkage seat drives the second linkage seat to move via the first guide bevel, and the second linkage seat drives the rack to move via the second guide bevel, thereby driving the blades to rotate until the connecting cavity is closed. When the blocking seat drives the plug-in seat to separate from the mounting seat, the first linkage seat is reset via the first reset member, the second linkage seat is reset via the second reset member, and the rack is reset via the third reset member, driving the blades to rotate until a gap is formed.

[0031] Optionally, the air supply pipe is rotatably connected to a screw in the movable space, the travel seat is threadedly connected to the outer wall of the screw, and the travel seat is respectively against the outer walls of the two reversing pipes on opposite sides in the movable space.

[0032] By adopting the above technical solution, the rotation of the screw drives the travel seat and the screw axis to move, thereby driving the travel seat to move.

[0033] Optionally, a stopper portion is provided on the mounting seat, and a stopper groove for the stopper portion to slide is provided on the inner wall of the reversing tube, and the stopper groove extends along the extension direction of the reversing tube.

[0034] By adopting the above technical solution, the cooperation between the anti-slip portion and the anti-slip groove can limit and guide the moving stroke of the reversing tube.

[0035] Optionally, the bottom frame has an abutment seat on a side facing away from the connecting tube, and a locking piece is provided between the abutment seat and the reversing tube, and the locking piece is used to abut and position the abutment seat on the reversing tube.

[0036] By adopting the above technical solution, the abutment seat limits the position of the bottom frame, and the locking member locks the bottom frame and the reversing tube.

[0037] In summary, this application has the following beneficial effects:

[0038] By moving the reversing seat, the reversing tube that needs to replace the filter is blocked, and the reversing tube that does not need to replace the filter is connected to the connecting pipe for normal airflow transmission. Therefore, there is no need to shut down the HVAC space when replacing the filter, which can improve the customer experience in the supermarket. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of a usage state structure of an embodiment of the present application;

[0040] Figure 2 This is another schematic diagram of the structure in use state of an embodiment of the present application;

[0041] Figure 3 is a cross-sectional view of the reversing tube according to an embodiment of the present application;

[0042] Figure 4 This is a schematic structural diagram of the travel seat according to an embodiment of the present application;

[0043] Figure 5 This is a schematic structural diagram of the mounting base according to an embodiment of the present application;

[0044] Figure 6 is a cross-sectional view of the mounting seat and base according to an embodiment of the present application;

[0045] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at A in the middle;

[0046] Figure 8 yes Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0047] Explanation of reference numerals: 1. air supply pipe; 101. connecting pipe; 102. reversing pipe; 2. filter; 3. reversing seat; 4. connecting portion; 5. movable space; 6. travel seat; 61. moving block; 62. boss; 7. travel groove; 8. mounting seat; 81. first seat; 82. second seat; 9. base; 91. bottom frame; 92. blade; 10. connecting cavity; 11. spacing gap; 12. synchronizer; 121. gear; 122. rack; 13. rotating shaft; 14. plug 1. First linkage seat; 15. First reset member; 161. First spring; 17. Second linkage seat; 18. First guide slope; 19. Second guide slope; 20. Second reset member; 201. Second spring; 202. Connecting block; 21. Third reset member; 211. Third spring; 212. Mounting block; 22. Through slot; 23. Screw; 24. Anti-slip portion; 25. Abutting seat; 26. Locking member; 27. Moving slot; 28. First slide slot; 29. ​​Second slide slot. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1-8 This application is described in further detail.

[0049] The embodiment of the present application discloses a supermarket HVAC structure. Figure 1 The supermarket HVAC structure includes an air supply pipe 1, a filter 2 and an HVAC (not shown in the figure). Each HVAC corresponds to two air supply pipes 1. One air supply pipe 1 connects the external environment with the air inlet of the HVAC, and the filter 2 is connected to the end of the air supply pipe 1 close to the external environment; the other air supply pipe 1 connects the air outlet of the HVAC with the interior of the supermarket, and the filter 2 is connected to the end of the air supply pipe 1 close to the interior of the supermarket.

[0050] In the embodiment of the present application, the filter 2 is an existing high-efficiency filter, which is in the shape of a square frame and has a square outer frame. In other embodiments, the filter 2 can also be a device with a dust filtering function, such as a filter net.

[0051] Reference Figure 1 and Figure 2 Taking the air supply duct 1 between the HVAC unit and the supermarket as an example, it consists of a connecting pipe 101 and a reversing pipe 102. The reversing pipes 102 are two in a square configuration, with filters 2 corresponding one to each reversing pipe 102 and removably connected to the corresponding reversing pipe 102. The connecting pipe 101 is connected to and communicates with both reversing pipes 102. The reversing pipe 102 is located at the end of the connecting pipe 101 away from the HVAC unit, while the end of the connecting pipe 101 closer to the reversing pipe 102 gradually expands in size toward the reversing pipe 102.

[0052] The two reversing tubes 102 are parallel to each other, and the extension length of the two reversing tubes 102 on the side away from each other is greater than the extension length of the two reversing tubes 102 on the side close to each other. A connecting portion 4 is integrally formed between the two reversing tubes 102 on the sides close to each other. The connecting portion 4 is in the shape of a square bar and is connected to the ends of the two reversing tubes 102 close to the connecting tube 101, so that the two reversing tubes 102 are connected at the connecting portion 4. The air supply duct 1 is installed to the ceiling via a hanger. The air supply duct 1 is installed inside the ceiling via the hanger, and the end surface of the air supply duct 1 away from the connecting tube 101 is flush with the side of the ceiling close to the supermarket.

[0053] Reference Figure 2 and Figure 3 A reversing seat 3 is provided in the air supply pipe 1 along the distribution direction of the two reversing pipes 102. The reversing seat 3 is a square plate-shaped structure. The reversing seat 3 is located at the connecting point of the two reversing pipes 102. The side of the reversing seat 3 facing away from the connecting pipe 101 is against the inner wall of the connecting part 4, and the filter 2 is located between the end of the reversing pipe 102 away from the connecting pipe 101 and the reversing seat 3.

[0054] The reversing seat 3 can be moved to be opposite to the communication path of any reversing tube 102 to cut off the communication path between the reversing tube 102 and the connecting tube, so that the airflow sent out by the connecting tube 101 moves to the other unblocked reversing tube 102 and is sent into the supermarket through the filter 2, so that the filter 2 in the reversing tube 102 opposite to the reversing seat 3 can be replaced without being easily affected by the airflow, and the HVAC can continue to operate when the filter 2 is replaced, thereby improving the customer experience in the supermarket.

[0055] A movable space 5 is formed between the two reversing tubes 102 on one side thereof, and the movable space 5 is opposite to the connecting portion 4. In order to move the reversing seat 3, the connecting portion 4 moves the travel seat 6 along its own length direction, that is, perpendicular to the distribution direction of the two reversing tubes 102.

[0056] Reference Figure 3 and Figure 4 The travel seat 6 includes a moving block 61 and a boss 62. The moving block 61 is square. The top of the moving block 61 abuts against the outer wall of the connecting portion 4 away from the connecting tube 101. The opposite sides of the moving block 61 abut against the outer walls of the two reversing tubes 102 that are close to each other.

[0057] The boss 62 is fixed to the top of the movable block 61 and extends through the connecting portion 4 away from the movable block 61 and into the air supply duct 1. The connecting portion 4 has a long hole along its length for the boss 62 to pass through and slide. The reversing seat 3 has a travel groove 7 on the side facing the connecting portion 4 for the boss 62 to enter. The travel groove 7 extends diagonally along the reversing seat 3 and intersects the direction of the long hole.

[0058] When the boss 62 is located at one end of the travel groove 7, the reversing seat 3 blocks one of the reversing tubes 102. When the boss 62 is located at the other end of the travel groove 7, the reversing seat 3 blocks the other reversing tube 102.

[0059] In order to drive the moving block 61 to move in the activity space 5, two rotating seats are fixed on the outer wall of the air supply pipe 1 in the activity space 5, and a screw 23 is rotatably connected between the two rotating seats. The axial direction of the screw 23 is parallel to the extension direction of the connecting part 4. The moving block 61 is rotatably connected to the outer wall of the screw 23. Rotating the screw 23 can drive the travel seat 6 to move along the axial direction of the screw 23.

[0060] In this embodiment, a motor connected to the screw 23 is installed on one of the rotating seats to drive the screw 23 to rotate. In other embodiments, one end of the screw 23 can be passed through the rotating seat and a handle can be provided, and the screw 23 can be rotated by manually turning the handle.

[0061] Reference Figure 2 and Figure 5To facilitate assembly and disassembly of the filter 2, in one embodiment, the reversing tube 102 optionally includes a mounting seat 8 corresponding to the reversing tube 102. The mounting seat 8 includes a first seat 81 and a second seat 82. The first seat 81 is square and abuts against the inner wall of the reversing tube 102 on the side away from the connecting portion 4. The two ends of the first seat 81, which are away from each other, also abut against the inner walls of the reversing tube 102 on opposite sides. The second seat 82 is square and abuts against the inner wall of the reversing tube 102 on the side close to the connecting portion 4. The filter 2 is detachably connected between the first seat 81 and the second seat 82.

[0062] When the filter 2 is connected to the mounting seat 8, the side of the first seat 81 away from the connecting pipe 101 is flush with the side of the second seat 82 away from the connecting pipe 101, the side of the second seat 82 close to the connecting pipe 101 protrudes from the filter 2 and is lower than the first seat 81, and the common cross-section of the filter 2, the first seat 81 and the second seat 82 is adapted to the size of the pipe mouth of the reversing tube 102.

[0063] A stopper 24 is fixed to the side of the first seat 81 facing away from the connection portion 4. A stopper groove for the stopper 24 to slide is provided on the inner wall of the reversing tube 102 away from the connection portion 4. The stopper groove extends along the extension direction of the reversing tube 102 and does not pass through the end of the reversing tube 102. The stopper 24 is dovetail-shaped to prevent the stopper 24 from separating from the reversing tube 102. The sliding movement of the stopper 24 in the stopper groove drives the mounting seat 8 and the filter 2 to move along the extension direction of the reversing tube 102.

[0064] When the retaining portion 24 abuts against the end of the retaining groove away from the connecting pipe 101, the mounting seat 8 drives the filter 2 to move out of the end of the reversing pipe 102 away from the connecting pipe 101, so that the filter 2 can be replaced outside the reversing pipe 102. When the retaining portion 24 abuts against the end of the retaining groove close to the connecting pipe 101, the first seat 81, the second seat 82 and the filter 2 are completely received in the reversing pipe 102, and the second seat 82 is located between the end of the reversing pipe 102 and the reversing seat 3 without interfering with the reversing seat 3. When the reversing seat 3 blocks the reversing pipe 102, the reversing seat 3 abuts against the side of the first seat 81 close to the connecting portion 4.

[0065] Among them, the first seat 81 and the second seat 82 have through holes for bolts to pass through, and the outer wall of the frame of the filter 2 has threaded holes for bolts to be threadedly connected. By placing the filter 2 between the first seat 81 and the second seat 82, the bolts are passed through the mounting seat 8 and threadedly connected to the filter 2 to install the filter 2.

[0066] Reference Figure 2Furthermore, a base 9 is fixedly connected between the first seat 81 and the second seat 82 in the same reversing tube 102. The cross-sectional size of the base 9 is consistent with that of the filter 2, and the base 9 is located on the side of the filter 2 away from the connecting tube 101. There is a gap between the base 9 and the filter 2.

[0067] Reference Figure 2 and Figure 5 The base 9 includes a bottom frame 91 and blades 92. The bottom frame 91 is square in shape, with opposite sides of the bottom frame 91 fixed to the first seat 81 and the second seat 82, respectively. A communication cavity 10 is formed in the center of the bottom frame 91, connecting the reversing tube 102 with the external environment. There are multiple blades 92, which are evenly spaced and arranged in the communication cavity 10 of the bottom frame 91 along the distribution direction of the two reversing tubes 102. Gaps 11 are provided between adjacent blades 92 and between the blades 92 at the edges and the inner wall of the bottom frame 91. This allows the blades 92 to disperse the airflow blown out from the reversing tube 102, thereby improving the customer's comfort level with the airflow.

[0068] Furthermore, the length extension direction of the blade 92 is perpendicular to the distribution direction of the two reversing tubes 102, the cross-section of the blade 92 along the length direction is elliptical, and a rotating shaft 13 is coaxially fixed in the middle of the blade 92, and the two ends of the rotating shaft 13 are rotatably connected to the opposite sides of the bottom frame 91 respectively.

[0069] Reference Figure 6 The bottom frame 91 has a synchronous member 12 that drives all the rotating shafts 13 on the bottom frame 91 to rotate synchronously, so as to drive all the blades 92 on the same bottom frame 91 to rotate synchronously. A linkage mechanism is provided between the bottom frame 91, the first seat 81 and the reversing seat 3.

[0070] Reference Figure 2 and Figure 6 When the reversing seat 3 is separated from the first seat 81, the minor axis of the blade 92 is parallel to the distribution direction of the two reversing tubes 102, and a gap 11 is formed. When the reversing seat 3 abuts against the first seat 81 to block the reversing tubes 102, the linkage mechanism cooperates with the synchronizer 12, which drives the blade 92 to rotate until the major axis of the blade 92 is parallel to the distribution direction of the two reversing tubes 102. At this time, adjacent blades 92 abut against each other, and the blades 92 at the edges abut against the corresponding inner walls of the bottom frame 91, so that the gap 11 disappears. The blades 92 block the communication cavity 10 of the bottom frame 91, thereby blocking dust from the filter 2 when the filter 2 is stored in the reversing tube 102 and not in use.

[0071] Reference Figure 7 Specifically, the synchronizer 12 includes a gear 121 and a rack 122. The gear 121 corresponds to the rotating shaft 13 one by one, and the gear 121 is coaxially fixed to the outer wall of the corresponding rotating shaft 13, and the gears 121 in the same base 9 are all located on one side of the bottom frame 91.

[0072] The rack 122 slides in the bottom frame 91 along the distribution direction of the blades 92. A movable groove 27 for the rack 122 to slide is provided in the bottom frame 91. The movable groove 27 passes through one end of the bottom frame 91 close to the first seat 81, so that the rack 122 can slide into the first seat 81. The rack 122 is engaged with all the gears 121 in the bottom frame 91 at the same time. When the rack 122 moves, it drives all the gears 121 to rotate, thereby driving all the blades 92 to rotate synchronously. And for the convenience of assembly, the bottom frame 91 is made of spliced

[0073] Reference Figure 8 The linkage mechanism includes a socket 14, a first linkage socket 15, a first reset member 16, a second linkage socket 17, a second reset member 20, and a third reset member 21. The socket 14 is block-shaped and corresponds one-to-one with the reversing tube 102. The socket 14 is fixed to the side of the reversing seat 3 and is located on the side of the reversing seat 3 facing the first seat 81.

[0074] The first linkage seat 15 is elongated and located within the first seat 81. It extends in the direction of the reversing tube 102. A first chute 28 is defined on the first seat 81, allowing the first linkage seat 15 to slide along the distribution direction of the two reversing tubes 102. A through slot 22, communicating with the first chute 28, is defined on the surface of the first seat 81 facing the reversing seat 3. The through slot 22 extends in the direction of the reversing tube 102 and is configured to receive the connector 14. Furthermore, a guide block (not shown) is fixed to the outer wall of the first linkage seat 15. A guide groove is defined on the inner wall of the first seat 81, allowing the guide block to slide along the direction of movement of the first linkage seat 15, thereby controlling the movement of the first linkage seat 15.

[0075] The first return member 16 includes a first spring 161, one end of the first spring 161 is connected to the side of the first linkage seat 15 away from the reversing seat 3, and the other end of the first spring 161 is connected to the inner wall of the first seat 81 away from the reversing seat 3, giving the first linkage seat 15 a tendency to move toward the reversing seat 3.

[0076] The second linkage seat 17 is long and is located inside the first seat 81. The length extension direction of the second linkage seat 17 is parallel to the length extension direction of the first linkage seat 15, and the second linkage seat 17 is located between the first linkage seat 15 and the rack 122. The first seat 81 is provided with a second slide groove 29 for the second linkage seat 17 to slide along its own length direction. The second slide groove 29 is connected to the first slide groove 28 and the movable groove 27 at the same time.

[0077] The second return member 20 includes a second spring 201 and a connecting block 202. The connecting block 202 is fixed to the outer wall of the second linkage seat 17. The first seat 81 is provided with a first guide groove that cooperates with the connecting block 202 on the inner wall of the second slide groove 29, so that the connecting block 202 can slide in the first guide groove along the extension direction of the reversing tube 102. The second spring 201 is located in the first guide groove, and the two ends of the second spring 201 that are far away from each other are respectively connected to the inner wall of the first guide groove and the connecting block 202. The second spring 201 gives the connecting block 202 and the second linkage seat 17 a tendency to move toward the direction close to the first linkage seat 15.

[0078] Reference Figure 7 and Figure 8 The third return member 21 includes a third spring 211 and a mounting block 212. The mounting block 212 is fixed to the outer wall of the rack 122. The bottom frame 91 defines a second guide groove on the inner wall of the movable groove 27 for the mounting block 212 to slide. The second guide groove extends along the length of the rack 122. The third spring 211 is located within the second guide groove. The two ends of the third spring 211, which are separated from each other, are respectively connected to the mounting block 212 and the inner wall of the second guide groove. The elastic force of the third spring 211 imparts a tendency for the mounting block 212 and the rack 122 to move toward the second linkage seat 17.

[0079] Reference Figure 8 The second linkage seat 17 has a first guide bevel 18 at one end close to the first linkage seat 15, and the first guide bevel 18 is inclined toward the reversing seat 3 along the direction close to the rack 122. The second linkage seat 17 has a second guide bevel 19 at one end close to the rack 122, and the second guide bevel 19 is inclined toward the direction close to the rack 122 away from the reversing seat 3.

[0080] Reference Figure 7 and Figure 8 When the reversing seat 3 does not abut the first seat 81, the elastic force of the first spring 161 drives the first linkage seat 15 to abut against the inner wall of the first slide groove 28 close to the reversing seat 3, and the elastic force of the second spring 201 drives the connecting block 202 to abut against the top wall of the first guide groove, so that the second linkage seat 17 extends into the first slide groove 28, the first guide inclined surface 18 is opposite to the end of the second linkage seat 17, and the elastic force of the third spring 211 drives the mounting block 212 to abut against the inner wall of one end of the second guide groove close to the second linkage seat 17, and the end of the rack 122 close to the second linkage seat 17 extends into the second slide groove 29. At this time, there is a gap 11 between the blades 92.

[0081] When the reversing seat 3 abuts against the first seat 81, the plug-in seat 14 enters the sliding groove through the through slot 22, and the plug-in seat 14 presses the first linkage seat 15 away from the reversing seat 3. The end of the first linkage seat 15 contacts the first guide bevel 18. Guided by the first guide bevel 18, the second linkage seat 17 moves away from the first linkage seat 15. Then, the second guide bevel 19 of the second linkage seat 17 contacts the end of the rack 122. Guided by the second guide bevel 19, the rack 122 moves away from the second linkage seat 17, causing the blade 92 to rotate until the connecting cavity 10 is closed. When the reversing seat 3 blocks the reversing tube 102, the blade 92 simultaneously blocks the base 9, so that the filter 2 is protected between the base 9 and the reversing seat 3.

[0082] Reference Figure 2 and Figure 8 In addition, when the first seat 81 slides in the reversing tube 102 while abutting against the reversing seat 3, the plug-in seat 14 slides in the through groove 22, and the plug-in seat 14 always squeezes the first linkage seat 15, so that when the mounting seat 8 drives the base 9 and the filter 2 to move out of the reversing tube 102, the blade 92 always closes the connecting cavity 10.

[0083] Reference Figure 2 In order to position the mounting seat 8 and the base 9 within the reversing tube 102, in one embodiment, an abutment seat 25 is optionally fixed to the side of the bottom frame 91 facing away from the connecting tube 101. When the mounting seat 8 and the base 9 are moved into the reversing tube 102, the abutment seat 25 abuts against the end surface of the reversing tube 102, and a locking member 26 is provided between the abutment seat 25 and the reversing tube 102 to position the abutment seat 25. Specifically, the locking member 26 includes a bolt that passes through the abutment seat 25 and is threadedly connected to the end wall of the reversing tube 102. By removing the bolt, the base 9 and the filter 2 can be pulled out.

[0084] The implementation principle of a supermarket HVAC structure in an embodiment of the present application is as follows: first, the motor is started to drive the screw 23 to rotate, so that the travel seat 6 moves from one end of the travel groove 7 to the other end, and drives the reversing seat 3 from blocking one reversing tube 102 to blocking the other reversing tube 102, so that the reversing tube 102 with the unused filter 2 is connected to the connecting tube 101, and through the action of the linkage mechanism and the synchronizer 12, the blade 92 opposite to the blocked connecting seat is driven to block the connecting cavity 10 of the bottom frame 91. Then, the lock between the base 9 and the reversing tube 102 at the blocked reversing tube 102 is released, and the base 9 is pulled downward to move the base 9 and the filter 2 out of the reversing tube 102, and then the filter 2 is replaced and the blade 92 is cleaned. After that, the base 9 is pushed back into the reversing tube 102, and the newly replaced filter 2 is protected between the base 9 and the reversing seat 3.

[0085] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A supermarket HVAC structure, characterized by: The invention comprises an air supply pipe (1) and a filter (2), wherein the air supply pipe (1) comprises a connecting pipe (101) and a reversing pipe (102), wherein the reversing pipe (102) has two reversing pipes (102), both of which are connected to the connecting pipe (101), and a reversing seat (3) is movably provided at the connection point between the air supply pipe (1) and the two reversing pipes (102), wherein the reversing seat (3) is located in the air supply pipe (1), and is used to cut off the communication path between one of the reversing pipes (102) and the connecting pipe (101); the filter (2) is detachably connected to the reversing pipe (102); A connecting portion (4) is provided between the sides of the two reversing tubes (102) that are close to each other, so that a movable space (5) is formed between the sides of the two reversing tubes (102) that are close to each other. A travel seat (6) is provided on the connecting portion (4) that moves along its own length direction. The travel seat (6) has a portion that penetrates the connecting portion (4) and enters the air supply pipe (1). The reversing seat (3) has a travel groove (7) that is inclined relative to the moving direction of the travel seat (6). When the travel seat (6) moves to abut against the travel groove (7) and are away from both ends, the reversing seat (3) blocks the two reversing tubes (102).

2. A supermarket HVAC structure according to claim 1, characterized in that: It also includes a mounting seat (8), the mounting seat (8) corresponding to the reversing tube (102) one-to-one, the mounting seat (8) and the filter (2) being detachably connected, and the mounting seat (8) being slidably connected to the reversing tube (102) along the extension direction of the reversing tube (102) so as to be able to bring the filter (2) out of the reversing tube (102).

3. A supermarket HVAC structure according to claim 2, characterized in that: It also includes a base (9), the base (9) corresponds to the reversing tube (102) one-to-one, the base (9) is connected to the mounting seat (8), and the base (9) is located on the side of the filter (2) away from the connecting tube (101), and the base (9) includes: A bottom frame (91) encloses and forms a communication cavity (10) for connecting the reversing tube (102) with the external environment; There are multiple blades (92), which are connected to the bottom frame (91) and located in the connecting cavity (10), with a gap between two adjacent blades (92).

4. A supermarket HVAC structure according to claim 3, characterized in that: The blades (92) are rotatably connected to the bottom frame (91), and a plurality of the blades (92) are distributed along a straight line; a synchronous member (12) is provided between the bottom frame (91) and the blades (92), and the synchronous member (12) is used to drive the blades (92) of the same bottom frame (91) to rotate synchronously; A linkage mechanism is provided between the bottom frame (91) and the connected mounting seat (8), and the linkage mechanism cooperates with the synchronous member (12) so that when the reversing seat (3) cuts off the communication path between the reversing tube (102) and the connecting tube (101), the reversing seat (3) drives the linkage mechanism to move, and the linkage mechanism drives the synchronous member (12) to move, so that the blades (92) on the corresponding base (9) rotate until they abut against each other in sequence, so as to close the communicating cavity (10).

5. A supermarket HVAC structure according to claim 4, characterized in that: The blade (92) is connected to a rotating shaft (13) extending into the bottom frame (91) to rotate the blade (92), and the synchronizer (12) includes a gear (121) and a rack (122). The gear (121) is connected to the rotating shaft (13), and the rack (122) slides in the bottom frame (91), and the rack (122) is simultaneously engaged with all the gears (121) in the same bottom frame (91).

6. A supermarket HVAC structure according to claim 5, characterized in that: The linkage mechanism includes: A plug-in seat (14) is arranged on the side of the reversing seat (3) facing the mounting seat (8); A first linkage seat (15) moves within the mounting seat (8) along the moving direction of the reversing seat (3); A first resetting member (16) is disposed in the mounting seat (8) and is used to give the first linkage seat (15) a tendency to move toward the direction approaching the reversing seat (3); A second linkage seat (17) is located between the first linkage seat (15) and the rack (122), moves in the mounting seat (8) along a moving direction perpendicular to the reversing seat (3), and has a first guide bevel (18) facing the first linkage seat (15) and a second guide bevel (19) facing the rack (122); A second restoring member (20) is disposed in the mounting seat (8) and is used to allow the second linkage seat (17) to move toward the first linkage seat (15); A third reset member (21) is disposed in the bottom frame (91) and is used to give the rack (122) a tendency to move toward the second linkage seat (17); The mounting seat (8) has a through slot (22) for the plug-in seat (14) to enter the mounting seat (8), and the through slot (22) is opposite to the first linkage seat (15) and extends along the extension direction of the reversing tube (102).

7. The supermarket HVAC structure according to claim 1, characterized in that: The air supply pipe (1) is rotatably connected to a screw rod (23) in the movable space (5), the travel seat (6) is threadedly connected to the outer wall of the screw rod (23), and the travel seat (6) is respectively against the outer walls of the two reversing pipes (102) on opposite sides in the movable space (5).

8. The supermarket HVAC structure according to claim 2, characterized in that: A stopper portion (24) is provided on the mounting seat (8), and a stopper groove for the stopper portion (24) to slide is provided on the inner wall of the reversing tube (102), wherein the stopper groove extends along the extension direction of the reversing tube (102).

9. The supermarket HVAC structure according to claim 3, characterized in that: The bottom frame (91) has an abutment seat (25) on a side facing away from the connecting tube (101), and a locking member (26) is provided between the abutment seat (25) and the reversing tube (102). The locking member (26) is used to abut and position the abutment seat (25) on the reversing tube (102).

Images