Drainage device and drainage method for building heating ventilation air conditioning system

Abstract

The invention discloses a drainage device and drainage method for a building heating ventilation air conditioning system, and belongs to the technical field of building heating ventilation engineering.The drainage device comprises a storage box, a water storage chamber assembly is installed at the top of the storage box, a support pipeline assembly is installed below the water storage chamber assembly, and a plurality of liquid storage bottles are arranged below the support pipeline assembly; a base assembly is installed on the inner side of the storage box and located on the outer sides of the multiple liquid storage bottles, a connecting pipe is installed above the water storage chamber assembly, and a drainage disc body is arranged above the connecting pipe; by arranging the position adjusting and filtering device, a worker can adjust the position of the drainage disc body to a certain degree through cooperation of a lead screw, an L-shaped plate and other structures when needed, and the worker can filter air conditioner water to a certain degree through cooperation of the lead screw, a filter screen plate and other structures when needed; and therefore, the working requirements under different conditions can be better met, and the working capability of the device is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building HVAC engineering, and in particular relates to a drainage device and a drainage method for a building HVAC system. Background Art

[0002] Building HVAC engineering is an important part of construction, and is mainly responsible for the construction and installation of heating, ventilation, air-conditioning and other systems inside the building.

[0003] Chinese patent application No. 202320656253.9 discloses an air-conditioning drainage device, including a drainage pan body, a water storage assembly is arranged below the drainage pan body, the water storage assembly includes a storage box, a water storage chamber is arranged at the top of the storage box, a liquid level sensor is arranged on the other side of the water storage chamber, a bracket pipe is arranged at the bottom of the water storage chamber, a plurality of branch pipes are arranged at the bottom of the bracket pipe, and an electromagnetic control valve is arranged on the branch pipe. A base is arranged at the top of the storage box, a plurality of placement chambers are opened in the base, and a liquid storage bottle is arranged below the branch pipe. Through the design of the water storage assembly, air-conditioning water is introduced into the storage box, flows into the liquid storage bottle through the water storage chamber, and is controlled by the electromagnetic control valve on the branch pipe at the bottom of the bracket pipe. When a single liquid storage bottle is full, the electromagnetic control valve on its branch pipe controls the air-conditioning water to be cut off, and then flows to other liquid storage bottles.

[0004] 1. The above-mentioned disclosed patent has the problem that it is inconvenient to adjust the position of the drain pan body and cannot filter the air-conditioning water when needed, which makes it difficult to meet the working needs in different situations, thereby reducing the working capacity of the device; 2. The above-mentioned disclosed patent has the problem that the air-conditioning water in the storage box is easy to freeze in cold weather and it is inconvenient to provide auxiliary lighting in a dark environment, which makes it difficult to meet the working needs in different environments, thereby reducing the applicability of the device; 3. The above-mentioned disclosed patent has the problem that it is inconvenient to adjust the height of the storage box and other structures, thereby reducing the practicality of the device. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a drainage device and drainage method for a building HVAC system, which has the characteristics of high working capacity, good applicability and strong practicality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drainage device for a building HVAC system, comprising a storage box, a water storage chamber assembly is installed on the top of the storage box, a bracket pipe assembly is installed below the water storage chamber assembly, a plurality of liquid storage bottles are arranged below the bracket pipe assembly, a base assembly is installed on the inner side of the storage box and at a position outside the plurality of liquid storage bottles, a connecting pipe is installed above the water storage chamber assembly, a drainage pan body is arranged above the connecting pipe, a bottom plate is arranged below the storage box, the connecting pipe and the drainage pan body are connected by a position adjustment filter device, antifreeze lighting devices are installed on the inner side of the storage box and at positions on both sides of the water storage chamber assembly, and the storage box and the bottom plate are connected by a height adjustment device.

[0007] Furthermore, the positioning filter device includes a connecting box, a filter assembly, an L-shaped plate, a water pipe, a screw and a threaded block. The connecting box is installed on the side of the connecting pipe close to the drain pan body, and the screw is installed on one side of the connecting box through a bearing. The water pipe is installed below the drain pan body and at a position inside the connecting box, and the L-shaped plate is installed on the outside of the water pipe and at a position outside the screw. A threaded block is installed at the bottom of the connecting box and at a position on one side of the connecting pipe through threads, and the filter assembly is installed on the edge of the side of the connecting box away from the screw.

[0008] Furthermore, the height of the inner top surface of the L-shaped plate is equal to the height of the outer top surface of the connection box.

[0009] Furthermore, the filter assembly includes a filter plate and a screw, the screw is threadedly installed on one side of the connection box away from the screw rod and close to the edge, and the filter plate is installed on one side of the screw rod and at a position inside the connection box.

[0010] Furthermore, the height of the inner bottom surface of the filter plate is equal to the height of the outer bottom surface of the connection box.

[0011] Furthermore, the antifreeze lighting device includes a mesh box, an electric heating rod and a stirring assembly. The mesh box is installed on the inner side of the storage box and on both sides of the water storage chamber assembly, the electric heating rod is installed on the inner side of the mesh box, and the stirring assembly is installed on the inner side of the mesh box and on one side of the electric heating rod.

[0012] Furthermore, the antifreeze lighting device also includes a lighting lamp, and a plurality of lighting lamps are installed below the mesh box.

[0013] Furthermore, the stirring assembly includes a motor and fan blades. The motor is installed on the inner side of the mesh box and on one side of the electric heating rod, and the fan blades are installed on the outer side of the motor output end.

[0014] Furthermore, the height adjustment device includes a connecting plate, screws, threaded holes, and a support frame. Connecting plates are installed on both sides of the storage box, and a support frame is installed above the bottom plate and outside the storage box and the two connecting plates. Two screws are installed on the top of the support frame through threads, and threaded holes are opened on both sides of the two connecting plates away from each other.

[0015] Furthermore, the drainage method of the drainage device of the building HVAC system comprises the following steps:

[0016] 1. The staff rotates the screw in the filter device, which is threadedly connected to the L-shaped plate, and the inner top surface of the L-shaped plate fits with the outer top surface of the connection box, so the screw drives the L-shaped plate to move, thereby adjusting the position of the water pipe and the drain pan body. The length of the L-shaped plate is greater than the length of the connection box, so the L-shaped plate can ensure the closure of the connection box during the movement. Then the staff can rotate the screw in the filter assembly, which is threadedly connected to the connection box, and the screw is connected to the filter plate by a bearing, and the inner bottom surface of the filter plate fits with the outer bottom surface of the connection box, so the screw drives the filter plate to move above the connection pipe;

[0017] Second, in cold weather, the staff can start the electric heating rods in the mesh boxes of the two antifreeze lighting devices to heat the inside of the storage box, start the motors in the two stirring components, and drive the fan blades thereon to stir the air in the storage box, making the heating work more uniform, thereby preventing the air-conditioning water in the storage box from freezing. In a dark environment, the staff can start each lighting lamp for auxiliary lighting;

[0018] 3. The staff can screw the two screws on the support frame in the height adjustment device to disengage them from the threaded holes on the two connecting plates, and then pull the storage box to move it and the two connecting plates and other structures to the required height, and then rotate the two screws in the opposite direction to connect them with the corresponding threaded holes, thereby adjusting the height of the storage box and other structures;

[0019] 4. When the building HVAC system is draining, the discharged air-conditioning water falls into the drain pan body, and then passes through the water pipe into the connection box. After that, the air-conditioning water is filtered by the filter screen and passes through the connection pipe, water storage chamber assembly and bracket pipe assembly into each liquid storage bottle for storage, thereby draining the water. When necessary, the staff can unscrew the threaded block to clean the inside of the connection box.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention provides a position adjustment filter device, so that the staff can adjust the position of the drain pan body to a certain extent through the cooperation of structures such as a screw rod and an L-shaped plate when necessary, and the staff can filter the air-conditioning water to a certain extent through the cooperation of structures such as a screw rod and a filter plate when necessary, so as to better meet the work needs in different situations, thereby improving the working capacity of the device.

[0022] 2. The present invention provides an antifreeze lighting device so that the staff can heat the inside of the storage box when necessary through the cooperation of structures such as electric heating rods, thereby reducing the possibility of freezing of air-conditioned water in the storage box in cold weather. In addition, the staff can use auxiliary lighting in dark environments to better meet the work needs in different environments, thereby improving the applicability of the device.

[0023] 3. The present invention provides a height adjustment device so that the staff can adjust the height of the storage box and other structures by cooperating with the screws and threaded holes when necessary, thereby better meeting the work needs in different situations and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is a three-dimensional cutaway view of the present invention;

[0026] Figure 3 It is a three-dimensional cutaway view of the position adjustment filter device of the present invention;

[0027] Figure 4 is a three-dimensional cutaway view of the antifreeze lighting device of the present invention;

[0028] Figure 5 It is a three-dimensional cutaway view of the height adjustment device of the present invention.

[0029] In the figure: 1. storage box; 2. adjustment filter device; 21. connection box; 22. filter assembly; 221. filter plate; 222. screw; 23. L-shaped plate; 24. water pipe; 25. screw; 26. threaded block; 3. drain pan body; 4. connection pipe; 5. antifreeze lighting device; 51. mesh box; 52. electric heating rod; 53. stirring assembly; 531. motor; 532. fan blade; 54. lighting lamp; 6. height adjustment device; 61. connection plate; 62. screw; 63. threaded hole; 64. support frame; 7. liquid storage bottle; 8. bracket pipe assembly; 9. water storage chamber assembly; 10. base assembly; 11. bottom plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-5 The present invention provides the following technical solutions: a drainage device for a building HVAC system, comprising a storage box 1, a water storage chamber assembly 9 is installed on the top of the storage box 1, a bracket pipe assembly 8 is installed below the water storage chamber assembly 9, a plurality of liquid storage bottles 7 are arranged below the bracket pipe assembly 8, a base assembly 10 is installed on the inner side of the storage box 1 and at a position outside the plurality of liquid storage bottles 7, a connecting pipe 4 is installed above the water storage chamber assembly 9, a drainage pan body 3 is arranged above the connecting pipe 4, a bottom plate 11 is arranged below the storage box 1, the connecting pipe 4 and the drainage pan body 3 are connected by a position adjustment filter device 2, antifreeze lighting devices 5 are installed on the inner side of the storage box 1 and at positions on both sides of the water storage chamber assembly 9, and the storage box 1 and the bottom plate 11 are connected by a height adjustment device 6.

[0033] Further in the present invention, the positioning filter device 2 includes a connecting box 21, a filter assembly 22, an L-shaped plate 23, a water pipe 24, a screw 25 and a threaded block 26. The connecting box 21 is installed on the side of the connecting pipe 4 close to the drain pan body 3, and the screw 25 is installed on one side of the connecting box 21 through a bearing. The water pipe 24 is installed below the drain pan body 3 and at a position located on the inner side of the connecting box 21, and the L-shaped plate 23 is installed on the outside of the water pipe 24 and at a position located on the outside of the screw 25. The threaded block 26 is installed through threads at the bottom of the connecting box 21 and at a position located on one side of the connecting pipe 4, and the filter assembly 22 is installed on the edge of the side of the connecting box 21 away from the screw 25.

[0034] By adopting the above technical solution, the staff can adjust the position of the drain pan body 3 by means of the cooperation of the screw rod 25 and the L-shaped plate 23 when necessary, thereby better meeting the working needs in different situations.

[0035] Furthermore, in the present invention, the height of the inner top surface of the L-shaped plate 23 is equal to the height of the outer top surface of the connection box 21 .

[0036] By adopting the above technical solution, the device can ensure that the inner top surface of the L-shaped plate 23 and the outer top surface of the connection box 21 fit each other, thereby preventing the L-shaped plate 23 from rotating and deviating during movement, and preventing a gap from appearing between the inner top surface of the L-shaped plate 23 and the outer top surface of the connection box 21.

[0037] Further in the present invention, the filter assembly 22 includes a filter plate 221 and a screw 222. The screw 222 is threadedly installed on the edge of the connecting box 21 away from the screw rod 25, and the filter plate 221 is installed on one side of the screw 222 and at a position located on the inner side of the connecting box 21.

[0038] By adopting the above technical solution, the staff can filter the air-conditioning water to a certain extent through the cooperation of the screw 222 and the filter plate 221 and other structures when necessary, so as to better meet the work needs in different situations.

[0039] Furthermore, in the present invention, the height of the inner bottom surface of the filter plate 221 is equal to the height of the outer bottom surface of the connection box 21 .

[0040] By adopting the above technical solution, the device can ensure that the inner bottom surface of the filter plate 221 and the outer bottom surface of the connection box 21 fit each other, thereby preventing the filter plate 221 from rotating and deviating during movement, ensuring normal operation.

[0041] When the present embodiment is used, when the building HVAC system needs to use the device, the staff rotates the screw rod 25 in the filter device 2, and the screw rod 25 is threadedly connected to the L-shaped plate 23, and the inner top surface of the L-shaped plate 23 and the outer top surface of the connection box 21 fit each other, so the screw rod 25 drives the L-shaped plate 23 to move, and then adjusts the position of the water pipe 24 and the drain pan body 3. The length of the L-shaped plate 23 is greater than the length of the connection box 21, so the L-shaped plate 23 can ensure the closure of the connection box 21 during the movement, and then the staff can rotate the screw rod 222 in the filter assembly 22, and the screw rod 222 is threadedly connected to the connection box 21, and the screw rod 222 is connected to the filter plate 2 21 are connected by bearings, and the inner bottom surface of the filter plate 221 fits with the outer bottom surface of the connecting box 21, so the screw 222 drives the filter plate 221 to move above the connecting pipe 4. When the building HVAC system is drained, the discharged air-conditioned water falls into the drain pan body 3, and then passes through the water pipe 24 to enter the connecting box 21. Then, the air-conditioned water passes through the connecting pipe 4, the water storage chamber assembly 9 and the bracket pipe assembly 8 after being filtered by the filter plate 221 and enters the various liquid storage bottles 7 on the base assembly 10 for storage, thereby performing drainage work. The staff can unscrew the threaded block 26 to clean the inside of the connecting box 21 when necessary, and the bottom plate 11 plays a supporting role.

[0042] Example 2

[0043] The difference between this embodiment and embodiment 1 is that the antifreeze lighting device 5 includes a mesh box 51, an electric heating rod 52 and a stirring assembly 53, the mesh box 51 is installed on the inner side of the storage box 1 and on both sides of the water storage chamber assembly 9, the electric heating rod 52 is installed on the inner side of the mesh box 51, and the stirring assembly 53 is installed on the inner side of the mesh box 51 and on one side of the electric heating rod 52.

[0044] By adopting the above technical solution, the staff can heat the inside of the storage box 1 through the cooperation of the electric heating rod 52 and other structures when necessary, thereby reducing the possibility of freezing of the air-conditioned water in the storage box 1 in cold weather.

[0045] Furthermore, in the present invention, the antifreeze lighting device 5 also includes a lighting lamp 54 , and a plurality of lighting lamps 54 are installed below the mesh box 51 .

[0046] By adopting the above technical solution, the staff can use the lighting lamp 54 for certain auxiliary lighting in a dark environment, thereby better meeting the work needs in different environments and ensuring the normal progress of the work.

[0047] Further in the present invention, the stirring assembly 53 includes a motor 531 and a fan blade 532 . The motor 531 is installed on the inner side of the mesh box 51 and on one side of the electric heating rod 52 , and the fan blade 532 is installed on the outer side of the output end of the motor 531 .

[0048] By adopting the above technical solution, the staff can stir the air in the storage box 1 through the cooperation of the motor 531 and the fan blades 532 when needed, so that the heating work is more uniform and better meets the work needs.

[0049] When this embodiment is used, in cold weather, the staff can start the electric heating rod 52 in the mesh box 51 of the two antifreeze lighting devices 5 to heat the inner side of the storage box 1, and start the motor 531 in the two stirring assemblies 53, thereby driving the fan blades 532 thereon to stir the air in the storage box 1, making the heating work more uniform, thereby preventing the air-conditioned water in the storage box 1 from freezing. In a dark environment, the staff can start each lighting lamp 54 for auxiliary lighting.

[0050] Example 3

[0051] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that: the height adjustment device 6 includes a connecting plate 61, a screw 62, a threaded hole 63, and a support frame 64. The connecting plates 61 are installed on both sides of the storage box 1, and the support frame 64 is installed above the bottom plate 11 and at a position outside the storage box 1 and the two connecting plates 61. Two screws 62 are installed on the top of the support frame 64 through threads, and threaded holes 63 are opened on both sides of the two connecting plates 61 away from each other.

[0052] By adopting the above technical solution, the staff can adjust the height of the storage box 1 and other structures by cooperating with the screws 62 and the threaded holes 63 when necessary, thereby better meeting the work needs in different situations.

[0053] When the present embodiment is used, when it is necessary to adjust the height of the storage box 1 or other structures, the staff can screw the two screws 62 on the support frame 64 in the height adjustment device 6 to disengage the two screws 62 from the threaded holes 63 on the two connecting plates 61, and then pull the storage box 1 to move it and the two connecting plates 61 or other structures to the required height, and then reversely rotate the two screws 62 to connect them with the corresponding threaded holes 63, thereby adjusting the height of the storage box 1 or other structures to better meet the work needs in different situations.

[0054] Further in the present invention, the drainage method of the drainage device of the building HVAC system comprises the following steps:

[0055] 1. The staff rotates the screw rod 25 in the filter device 2. The screw rod 25 is threadedly connected to the L-shaped plate 23, and the inner top surface of the L-shaped plate 23 fits with the outer top surface of the connection box 21. Therefore, the screw rod 25 drives the L-shaped plate 23 to move, thereby adjusting the position of the water pipe 24 and the drain pan body 3. The length of the L-shaped plate 23 is greater than the length of the connection box 21. Therefore, the L-shaped plate 23 can ensure the closure of the connection box 21 during the movement. Then the staff can rotate the screw rod 222 in the filter assembly 22. The screw rod 222 is threadedly connected to the connection box 21. The screw rod 222 is bearing-connected to the filter plate 221. The inner bottom surface of the filter plate 221 fits with the outer bottom surface of the connection box 21. Therefore, the screw rod 222 drives the filter plate 221 to move to the top of the connection pipe 4;

[0056] Second, in cold weather, the staff can start the electric heating rods 52 in the mesh boxes 51 of the two antifreeze lighting devices 5 to heat the inside of the storage box 1, start the motors 531 in the two stirring components 53, thereby driving the fan blades 532 thereon to stir the air in the storage box 1, making the heating work more uniform, thereby preventing the air-conditioned water in the storage box 1 from freezing. In a dark environment, the staff can start the various lighting lamps 54 for auxiliary lighting;

[0057] 3. The staff can screw the two screws 62 on the support frame 64 in the height adjustment device 6 to disengage the threaded holes 63 on the two connecting plates 61, and then pull the storage box 1 to move it and the two connecting plates 61 and other structures to the required height, and then reversely rotate the two screws 62 to connect them with the corresponding threaded holes 63, thereby adjusting the height of the storage box 1 and other structures;

[0058] 4. When the building HVAC system is drained, the discharged air-conditioning water falls into the drain pan body 3, and then passes through the water pipe 24 into the connection box 21. Then, after being filtered by the filter screen 221, the air-conditioning water passes through the connection pipe 4, the water storage chamber assembly 9 and the bracket pipe assembly 8 into each liquid storage bottle 7 for storage, thereby draining the water. The staff can unscrew the threaded block 26 to clean the inside of the connection box 21 when necessary.

[0059] The structure and principle of the storage box 1 and its upper structure, the drain pan body 3, the connecting pipe 4, the liquid storage bottle 7, the bracket pipe assembly 8 composed of a bracket pipe, a branch pipe and an electromagnetic control valve, the water storage chamber assembly 9 composed of a water storage chamber and a liquid level sensor, and the base assembly 10 composed of a base, a placement chamber and a clamping and fixing assembly in the present invention have been disclosed in an air conditioning drainage device disclosed in Chinese patent application No. 202320656253.9. Its working principle is that when in use, the air conditioning water is introduced into the storage box through the drain pan, and then flows into the liquid storage bottle through the water storage chamber. It is controlled by the electromagnetic control valve on the branch pipe at the bottom of the bracket pipe, so that after a single liquid storage bottle is filled, the liquid level sensor on its branch pipe is drained. The electromagnetic control valve controls the cutoff of the air-conditioning water, and then it flows to other liquid storage bottles. The full liquid storage bottle is taken out by opening the cabinet door, and the air-conditioning water inside is recycled and can be used for floor cleaning or other purposes, thereby achieving energy conservation and environmental protection and avoiding waste of water resources. The clamping and fixing components include a clamping chamber, and springs are arranged in the clamping chambers on both sides. The other end of the spring is connected to a clamping plate. When the liquid storage bottle is placed in, the liquid storage bottle is clamped and fixed by the clamping plates on both sides under the action of the springs to prevent the liquid storage bottle from tipping over and causing leakage of the air-conditioning water. The whole operation is simple and convenient. Compared with an existing air-conditioning drainage device, the overall protection, functionality and practicality of an air-conditioning drainage device can be improved through design.

[0060] The working principle and use process of the present invention are as follows: when the building HVAC system needs to use the device, the staff rotates the screw rod 25 in the filter device 2, the screw rod 25 is threadedly connected to the L-shaped plate 23, and the inner top surface of the L-shaped plate 23 and the outer top surface of the connection box 21 fit each other, so the screw rod 25 drives the L-shaped plate 23 to move, and then adjusts the position of the water pipe 24 and the drain pan body 3. The length of the L-shaped plate 23 is greater than the length of the connection box 21, so the L-shaped plate 23 can ensure the closure of the connection box 21 during the movement, and then the staff can rotate the filter. The screw 222 in the assembly 22 is threadedly connected to the connection box 21, and the screw 222 is bearing-connected to the filter plate 221, and the inner bottom surface of the filter plate 221 and the outer bottom surface of the connection box 21 fit each other, so the screw 222 drives the filter plate 221 to move to the top of the connection pipe 4. When the building HVAC system is drained, the discharged air-conditioning water falls into the drain pan body 3, and then passes through the water pipe 24 into the connection box 21, and then the air-conditioning water passes through the connection pipe 4, the water storage chamber assembly 9 and the bracket pipe assembly 8 after being filtered by the filter plate 221. The liquid is stored in each liquid storage bottle 7 on the base assembly 10, so as to drain the liquid. The staff can unscrew the threaded block 26 to clean the inside of the connection box 21 when necessary, and the bottom plate 11 plays a supporting role. In cold weather, the staff can start the electric heating rod 52 in the mesh box 51 of the two antifreeze lighting devices 5 to heat the inside of the storage box 1, and start the motor 531 in the two stirring assemblies 53, thereby driving the fan blades 532 thereon to stir the air in the storage box 1, so that the heating work is more uniform, thereby preventing the air conditioner in the storage box 1 from freezing. Water freezes, and in a dark environment, the staff can start each lighting lamp 54 for auxiliary lighting; when it is necessary to adjust the height of the storage box 1 and other structures, the staff can screw the two screws 62 on the support frame 64 in the height adjustment device 6 to disengage the threaded holes 63 on the two connecting plates 61, and then pull the storage box 1 to move it and the two connecting plates 61 and other structures to the required height, and then reversely rotate the two screws 62 to connect them with the corresponding threaded holes 63, thereby adjusting the height of the storage box 1 and other structures to better meet the work needs in different situations.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage device for a building HVAC system, comprising a storage box (1), a water storage chamber assembly (9) being installed on the top of the storage box (1), a support pipe assembly (8) being installed below the water storage chamber assembly (9), a plurality of liquid storage bottles (7) being arranged below the support pipe assembly (8), a base assembly (10) being installed inside the storage box (1) and at a position outside the plurality of liquid storage bottles (7), a connecting pipe (4) being installed above the water storage chamber assembly (9), a drainage pan body (3) being arranged above the connecting pipe (4), and a bottom plate (11) being arranged below the storage box (1), characterized in that: The connection pipe (4) is connected to the drain pan body (3) via a position adjustment filter device (2); antifreeze lighting devices (5) are installed inside the storage box (1) and at positions on both sides of the water storage chamber assembly (9); and the storage box (1) is connected to the bottom plate (11) via a height adjustment device (6).

2. A drainage device for a building HVAC system according to claim 1, characterized in that: The position adjustment filter device (2) comprises a connection box (21), a filter assembly (22), an L-shaped plate (23), a water pipe (24), a screw rod (25) and a threaded block (26); the connection box (21) is installed on a side of the connection pipe (4) close to the drain pan body (3); the screw rod (25) is installed on one side of the connection box (21) via a bearing; the water pipe (24) is installed below the drain pan body (3) and at a position inside the connection box (21); the L-shaped plate (23) is installed on the outside of the water pipe (24) and at a position outside the screw rod (25); the threaded block (26) is installed at the bottom of the connection box (21) and at a position on one side of the connection pipe (4) via a thread; and the filter assembly (22) is installed at a position close to the edge of a side of the connection box (21) away from the screw rod (25).

3. A drainage device for a building HVAC system according to claim 2, characterized in that: The height of the inner top surface of the L-shaped plate (23) is equal to the height of the outer top surface of the connection box (21).

4. A drainage device for a building HVAC system according to claim 2, characterized in that: The filter assembly (22) comprises a filter plate (221) and a screw rod (222); the screw rod (222) is installed via a thread at an edge position on a side of the connection box (21) away from the screw rod (25); and the filter plate (221) is installed at a position on one side of the screw rod (222) and located inside the connection box (21).

5. A drainage device for a building HVAC system according to claim 4, characterized in that: The height of the inner bottom surface of the filter plate (221) is equal to the height of the outer bottom surface of the connection box (21).

6. A drainage device for a building HVAC system according to claim 1, characterized in that: The antifreeze lighting device (5) comprises a mesh box (51), an electric heating rod (52) and a stirring assembly (53); the mesh box (51) is installed on the inner side of the storage box (1) and at positions on both sides of the water storage chamber assembly (9); the electric heating rod (52) is installed on the inner side of the mesh box (51); and the stirring assembly (53) is installed on the inner side of the mesh box (51) and at a position on one side of the electric heating rod (52).

7. A drainage device for a building HVAC system according to claim 6, characterized in that: The antifreeze lighting device (5) further comprises lighting lamps (54), and a plurality of lighting lamps (54) are installed below the mesh box (51).

8. A drainage device for a building HVAC system according to claim 6, characterized in that: The stirring assembly (53) comprises a motor (531) and a fan blade (532); the motor (531) is installed on the inner side of the mesh box (51) and at a position on one side of the electric heating rod (52); and the fan blade (532) is installed on the outer side of the output end of the motor (531).

9. A drainage device and drainage method for a building HVAC system according to claim 1, characterized in that: The height adjustment device (6) comprises a connecting plate (61), a screw (62), a threaded hole (63), and a support frame (64); the connecting plates (61) are installed on both sides of the storage box (1); the support frame (64) is installed above the bottom plate (11) and at a position outside the storage box (1) and the two connecting plates (61); two screws (62) are installed on the top of the support frame (64) through threads; and threaded holes (63) are provided on both sides of the two connecting plates (61) that are away from each other.

10. A drainage device for a building HVAC system according to any one of claims 1 to 9, characterized in that: The drainage method of the drainage device of the building HVAC system comprises the following steps: First, the staff rotates the screw rod (25) in the filter device (2) to adjust the position. The screw rod (25) is threadedly connected to the L-shaped plate (23), and the inner top surface of the L-shaped plate (23) and the outer top surface of the connection box (21) are in contact with each other. Therefore, the screw rod (25) drives the L-shaped plate (23) to move, thereby adjusting the position of the water pipe (24) and the drain pan body (3). The length of the L-shaped plate (23) is greater than the length of the connection box (21). Therefore, during the movement, the L-shaped plate (23) is moved. The plate (23) can ensure the closure of the connection box (21), and then the staff can rotate the screw (222) in the filter assembly (22), the screw (222) and the connection box (21) are threadedly connected, the screw (222) and the filter plate (221) are bearing-connected, and the inner bottom surface of the filter plate (221) and the outer bottom surface of the connection box (21) are mutually fitted, so the screw (222) drives the filter plate (221) to move to the top of the connection pipe (4); Second, in cold weather, the staff can start the electric heating rods (52) in the mesh boxes (51) of the two antifreeze lighting devices (5) to heat the inside of the storage box (1), start the motors (531) in the two stirring components (53), thereby driving the fan blades (532) thereon to stir the air in the storage box (1), making the heating work more uniform, thereby preventing the air-conditioning water in the storage box (1) from freezing. In a dark environment, the staff can start the various lighting lamps (54) for auxiliary lighting; Third, the staff can turn the two screws (62) on the support frame (64) in the height adjustment device (6) to disengage the two screws (62) from the threaded holes (63) on the two connecting plates (61), and then pull the storage box (1) to move the storage box and the two connecting plates (61) and other structures to a desired height, and then reversely rotate the two screws (62) to connect them with the corresponding threaded holes (63), thereby adjusting the height of the storage box (1) and other structures; 4. When the building HVAC system is drained, the discharged air-conditioning water falls into the drain pan body (3), and then passes through the water delivery pipe (24) into the connection box (21). Then, after being filtered by the filter screen (221), the air-conditioning water passes through the connection pipe (4), the water storage chamber assembly (9) and the support pipe assembly (8) into each liquid storage bottle (7) for storage, thereby performing the drainage work. When necessary, the staff can unscrew the threaded block 26 to clean the inside of the connection box (21).

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