Single-air-duct variable-air-volume terminal device

Abstract

The utility model relates to the technical field of configuration or installation of control or safety devices, and discloses a single-air-duct variable air volume terminal device which comprises a shell, an installation opening is formed in the front side of the shell and extends into the shell, an installation frame is arranged in the shell, the front side of the installation frame is fixedly connected with a first motor assembly, and the front side of the first motor assembly is fixedly connected with a second motor assembly. The output end of the first motor assembly is fixedly connected with a first transmission shaft, the rear end of the first transmission shaft rotationally extends into the mounting frame, the rear end of the first transmission shaft is fixedly connected with a first threaded rod, the rear end of the first threaded rod penetrates through the sliding baffle in a threaded mode, and the rear end of the first threaded rod is rotationally connected with the rear wall of the mounting frame. And a cleaning mechanism is arranged in the mounting frame, in this way, dust and other particulate matter attached to the wind shield can be automatically cleaned according to needs, then the wind shield does not need to be detached from the interior of the device during cleaning, and the cleaning efficiency of the wind shield is improved.

Description

Technical Field

[0001] This utility model relates to the field of configuration or installation technology of control or safety devices, specifically a single-duct variable air volume terminal device. Background Technology

[0002] Variable air volume (VAV) terminal units are one of the key components of VAV air conditioning systems. Air conditioning systems use terminal units to adjust the primary air supply volume, track load changes, and maintain room temperature. The single-duct VAV terminal unit is the most basic type, adjusting the supply air volume by changing the airflow cross-sectional area; it is a throttling type of VAV terminal unit.

[0003] During use, to facilitate precise control of the air intake, a baffle is usually installed inside the device. The air intake is controlled by adjusting the baffle. However, during use, the air entering the device contains dust and other particulate matter. Over time, these particles gradually adhere to the baffle, and the accumulated dust and other particles gradually breed various bacteria. As a result, the air passing through the baffle carries bacteria, which can irritate the respiratory tract and cause symptoms such as chest tightness, dizziness, and gastrointestinal discomfort, affecting people's health. Therefore, the baffle inside the device needs to be cleaned regularly. However, since the baffle is located inside the device, and most variable air volume (VAV) terminal units are installed on the ceiling, disassembling and installing the baffle is quite troublesome, resulting in low cleaning efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a single-duct variable air volume terminal device that can automatically clean dust and other particulate matter attached to the baffle plate as needed, thereby eliminating the need to remove the baffle plate from the device during cleaning and improving the cleaning efficiency of the baffle plate.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a single-duct variable air volume terminal device, comprising a housing, an air intake fan fixedly connected inside the housing, and an installation port on the front side of the housing extending into the interior of the housing;

[0008] The mounting frame is located inside the housing, and the front side of the mounting frame extends out of the housing through the mounting port. The mounting frame is located on the left side of the air intake fan. The mounting frame is equipped with a cleaning mechanism, which can clean and collect dust and other particulate matter.

[0009] The cleaning mechanism includes a meshing groove, a second motor assembly, a worm gear, a rotating rod, a worm wheel, a second threaded rod, a cleaning block, two limiting grooves, two limiting blocks, a connecting port, a fixing port, a collection box, two connecting blocks, several sliding grooves, and several feed ports.

[0010] Preferably, a handle is fixedly connected to the front side of the mounting frame, and several fixed baffles are fixedly connected inside the mounting frame, with the several fixed baffles arranged at intervals.

[0011] The internal sliding connection of the mounting frame has several sliding baffles. The sliding baffles are located on the right side of the fixed baffles and are in contact with the fixed baffles. The sliding baffles and the fixed baffles are arranged alternately.

[0012] A first motor assembly is fixedly connected to the front side of the mounting frame, and a first drive shaft is fixedly connected to the output end of the first motor assembly. The rear end of the first drive shaft extends rotatably into the interior of the mounting frame.

[0013] The rear end of the first drive shaft is fixedly connected to a first threaded rod, the rear end of the first threaded rod is threaded through the sliding baffle, and the rear end of the first threaded rod is rotatably connected to the rear wall of the mounting frame.

[0014] Preferably, the engagement groove is formed inside the mounting frame, the engagement groove is located on the upper side of the top wall of the mounting frame, and the second motor assembly is fixedly connected to the front side of the mounting frame;

[0015] The output end of the second motor assembly is fixedly connected to the second drive shaft, the rear end of the second drive shaft extends rotatably into the interior of the meshing groove, and the worm is fixedly connected to the rear end of the second drive shaft.

[0016] The rear end of the worm is rotatably connected to the rear wall of the meshing groove, and the rotating rod is rotatably connected to the top wall of the meshing groove. The rotating rod is located on the right side of the worm.

[0017] Preferably, the lower end of the rotating rod extends rotatably into the interior of the mounting frame, the worm gear is fixedly sleeved on the outer surface of the rotating rod, the worm gear is disposed inside the meshing groove, and the worm gear is meshed with the worm.

[0018] The second threaded rod is fixedly connected to the lower end of the rotating rod, and a fixing ring is fixedly connected to the lower end of the second threaded rod. The cleaning block is slidably connected inside the mounting frame. The cleaning block is set on the left side of the fixed baffle, and the second threaded rod passes through the cleaning block.

[0019] The right side of the cleaning block has bristles that contact both the fixed baffle and the sliding baffle. Two limiting grooves are respectively located on the opposite side of the cleaning block.

[0020] Two limiting blocks are fixedly connected to the front and rear walls of the mounting frame, respectively, and the two limiting blocks are adapted to the two limiting grooves.

[0021] Preferably, the connection port is located on the bottom wall of the housing and extends into the interior of the housing, while the fixing port is located on the bottom wall of the mounting frame and extends into the interior of the mounting frame.

[0022] The collection box is located inside the fixed opening, and two connecting blocks are fixedly connected to the front and rear sides of the collection box respectively. Bolts are provided on the lower side of both connecting blocks.

[0023] Preferably, the two connecting blocks are fixedly connected to the mounting frame by bolts, and a plurality of sliding grooves are formed on the bottom wall of the mounting frame;

[0024] Several sliding grooves are respectively set at the intervals between several fixed baffles, and several feed inlets are opened on the right side of the collection box, with the feed inlets matching the sliding grooves.

[0025] (III) Beneficial Effects

[0026] Compared with the prior art, the present invention provides a single-duct variable air volume terminal device, which has the following beneficial effects:

[0027] (1) The single-duct variable air volume terminal device starts the first motor assembly, which makes the air outlet completely blocked by the fixed baffle and the sliding baffle. Then the second motor assembly is started. After transmission, the cleaning block will move up and down. Then the bristles on the back of the cleaning block will brush the dust on the fixed baffle and the sliding baffle, and the dust and other particles will be cleaned off. The dust on the left side of the fixed baffle will fall directly into the inside of the collection box, and the dust on the left side of the sliding baffle will fall onto the sliding groove. Then the inclined sliding groove at the bottom wall will allow the dust to enter the inside of the collection box through the feed port. After a period of time, the staff can remove the bolts on the two connecting blocks and then remove the collection box to clean the dust collected inside. Then the installation is completed. In this way, the dust and other particles attached to the baffle can be automatically cleaned as needed, so that the baffle does not need to be removed from the inside of the device during cleaning, thus improving the cleaning efficiency of the baffle.

[0028] (2) In this single-duct variable air volume terminal device, the collection box after installation will be located inside the connection port and the fixing port. As a result, the collection box and the two connecting blocks will be limited inside the connection port, so that the mounting frame cannot move inside the shell, ensuring the stability of the mounting frame after installation. When the mounting frame needs to be disassembled for major cleaning, only the collection box needs to be disassembled, and the limiting state between the mounting frame and the shell will be released. Then, pull the handle forward, and the handle will move the mounting frame synchronously. The mounting frame can then be taken out from inside the shell through the installation port, which improves the convenience of disassembling and installing the mounting frame. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a single-duct variable air volume terminal device according to the present invention;

[0030] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the outer shell of this utility model;

[0031] Figure 3 This is a schematic diagram of the transmission route connection structure of the second motor assembly of this utility model;

[0032] Figure 4 for Figure 3 Enlarged view of point A;

[0033] Figure 5 This is a schematic diagram of the transmission route connection structure of the first motor assembly of this utility model.

[0034] In the diagram: 1. Outer casing; 2. Intake fan; 3. Mounting port; 4. Mounting frame; 5. Handle; 6. Fixed baffle; 7. Sliding baffle; 8. First motor assembly; 9. First drive shaft; 10. First threaded rod; 11. Engaging groove; 12. Second motor assembly; 13. Second drive shaft; 14. Worm gear; 15. Rotating rod; 16. Worm wheel; 17. Second threaded rod; 18. Cleaning block; 19. Limiting groove; 20. Limiting block; 21. Connection port; 22. Fixing port; 23. Collection box; 24. Connecting block; 25. Sliding groove; 26. Feed inlet. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1 to 5This utility model provides a new technical solution: a single-duct variable air volume terminal device, including a housing 1, an intake fan 2 fixedly connected inside the housing 1, an installation port 3 extending into the housing 1 from the front side, a mounting frame 4 disposed inside the housing 1, the front side of the mounting frame 4 extending out of the housing 1 through the installation port 3, the mounting frame 4 being disposed to the left of the intake fan 2, a handle 5 fixedly connected to the front side of the mounting frame 4, a plurality of fixed baffles 6 fixedly connected inside the mounting frame 4, the plurality of fixed baffles 6 being arranged at intervals, a plurality of sliding baffles 7 slidably connected inside the mounting frame 4, the sliding baffles 7 being disposed to the right of the fixed baffles 6, the sliding baffles 7 contacting the fixed baffles 6, the plurality of sliding baffles 7 and the plurality of fixed baffles 6 being arranged alternately, the front side of the mounting frame 4 being fixed A first motor assembly 8 is connected, and the output end of the first motor assembly 8 is fixedly connected to a first drive shaft 9. The rear end of the first drive shaft 9 extends rotatably into the interior of the mounting frame 4. The rear end of the first drive shaft 9 is fixedly connected to a first threaded rod 10. The rear end of the first threaded rod 10 passes through the sliding baffle 7. The rear end of the first threaded rod 10 is rotatably connected to the rear wall of the mounting frame 4. A cleaning mechanism is provided inside the mounting frame 4. The cleaning mechanism can clean and collect dust and other particulate matter. The cleaning mechanism includes a meshing groove 11, a second motor assembly 12, a worm gear 14, a rotating rod 15, a worm wheel 16, a second threaded rod 17, a cleaning block 18, two limiting grooves 19, two limiting blocks 20, a connecting port 21, a fixing port 22, a collection box 23, two connecting blocks 24, several sliding grooves 25, and several feed ports 26.

[0037] Furthermore, the meshing groove 11 is formed inside the mounting frame 4 and is located on the upper side of the top wall of the mounting frame 4. The second motor assembly 12 is fixedly connected to the front side of the mounting frame 4, and the output end of the second motor assembly 12 is fixedly connected to the second drive shaft 13. The rear end of the second drive shaft 13 rotatably extends into the interior of the meshing groove 11. The worm gear 14 is fixedly connected to the rear end of the second drive shaft 13, and the rear end of the worm gear 14 is rotatably connected to the rear wall of the meshing groove 11. The rotating rod 15 is rotatably connected to the top wall of the meshing groove 11 and is located on the right side of the worm gear 14. The lower end of the rotating rod 15 rotatably extends into the interior of the mounting frame 4, and the worm wheel 16 is fixedly sleeved on the outer surface of the rotating rod 15. The worm gear 16 is located inside the meshing groove 11 and meshes with the worm 14. The second threaded rod 17 is fixedly connected to the lower end of the rotating rod 15. A fixing ring is fixedly connected to the lower end of the second threaded rod 17. The cleaning block 18 is slidably connected inside the mounting frame 4. The cleaning block 18 is located on the left side of the fixed baffle 6. The second threaded rod 17 passes through the cleaning block 18. The right side of the cleaning block 18 is bristles, which contact both the fixed baffle 6 and the sliding baffle 7. Two limiting grooves 19 are respectively opened on the opposite sides of the cleaning block 18. Two limiting blocks 20 are respectively fixedly connected to the front and rear walls of the mounting frame 4. The two limiting blocks 20 are respectively adapted to the two limiting grooves 19.

[0038] Furthermore, the connection port 21 is opened on the bottom wall of the outer shell 1 and extends into the interior of the outer shell 1. The fixing port 22 is opened on the bottom wall of the mounting frame 4 and extends into the interior of the mounting frame 4. The collection box 23 is set inside the fixing port 22. Two connecting blocks 24 are fixedly connected to the front and rear sides of the collection box 23 respectively. Bolts are provided on the lower side of the two connecting blocks 24. The two connecting blocks 24 are fixedly connected to the mounting frame 4 by bolts. Several sliding grooves 25 are opened on the bottom wall of the mounting frame 4. Several sliding grooves 25 are respectively set at the intervals between the front and rear of several fixed baffles 6. Several feed ports 26 are opened on the right side of the collection box 23. The feed ports 26 are adapted to the sliding grooves 25.

[0039] When starting work, to clean dust and other particles adhering to the fixed baffle 6 and sliding baffle 7, the operator starts the first motor assembly 8. The first motor assembly 8 drives the first transmission shaft 9 to rotate, which in turn drives the first threaded rod 10 to rotate synchronously. The first threaded rod 10 then drives several sliding baffles 7 to rotate synchronously, moving the sliding baffles 7 to the intervals between the fixed baffles 6 and stopping them. Thus, the air vent is completely blocked by the fixed baffles 6 and sliding baffles 7. Then, the second motor assembly 12 is started. The second motor assembly 12 transmits power from the output end, driving the second transmission shaft 13 to rotate. The second transmission shaft 13 drives the worm gear 14 to rotate synchronously, which in turn drives the meshing worm wheel 16 to rotate. The worm wheel 16 drives the rotating rod 15 to rotate synchronously, which in turn drives the second threaded rod 17 to rotate synchronously. The second threaded rod 17 drives the threaded cleaning block 18 to move up and down, so that the bristles on the back of the cleaning block 18 brush the dust on the fixed baffle 6 and sliding baffle 7, thus cleaning off the dust and other particles.

[0040] During cleaning, dust on the left side of the fixed baffle 6 falls directly into the collection box 23, while dust on the left side of the sliding baffle 7 falls onto the sliding groove 25. The inclined sliding groove 25 then allows the dust to enter the collection box 23 through the feed inlet 26. After a period of time, the workers remove the bolts on the two connecting blocks 24, allowing the collection box 23 to be removed and the collected dust cleaned. After reinstallation, the collection box 23 is positioned inside the connecting port 21 and the fixed port 22, thus confining the collection box 23 and the two connecting blocks 24 within the connecting port 21. This prevents the mounting frame 4 from moving inside the outer casing 1, ensuring its stability after installation. When the mounting frame 4 needs to be removed for thorough cleaning, simply remove the collection box 23. This releases the limiting state between the mounting frame 4 and the outer casing 1. Then, pull the handle 5 forward. The handle 5 moves the mounting frame 4 synchronously, allowing it to be removed from inside the outer casing 1 through the mounting port 3. In this way, dust and other particles attached to the wind deflector can be automatically cleaned as needed, eliminating the need to remove the wind deflector from the device during cleaning and improving its cleaning efficiency.

[0041] Working principle: When starting work, to clean dust and other particles adhering to the fixed baffle 6 and sliding baffle 7, the operator starts the first motor assembly 8. The first motor assembly 8 drives the first transmission shaft 9 to rotate, which in turn drives the first threaded rod 10 to rotate synchronously. The first threaded rod 10 then drives several sliding baffles 7 to rotate synchronously, moving the sliding baffles 7 to the interval between the fixed baffles 6 and stopping them. Thus, the air vent is completely blocked by the fixed baffles 6 and sliding baffles 7. Then, the second motor assembly 12 is started. The second motor assembly 12 transmits power from the output end, driving the second transmission shaft 13 to rotate. The second transmission shaft 13 drives the worm gear 14 to rotate synchronously, which in turn drives the meshing worm wheel 16 to rotate. The worm wheel 16 drives the rotating rod 15 to rotate synchronously, which in turn drives the second threaded rod 17 to rotate synchronously. The second threaded rod 17 drives the threaded cleaning block 18 to move up and down, so that the bristles on the back of the cleaning block 18 brush the dust on the fixed baffle 6 and sliding baffle 7, thus cleaning off the dust and other particles.

[0042] During cleaning, dust on the left side of the fixed baffle 6 falls directly into the collection box 23, and dust on the left side of the sliding baffle 7 falls onto the sliding groove 25. The inclined sliding groove 25 then allows the dust to enter the collection box 23 through the feed inlet 26. After a period of time, the workers remove the bolts on the two connecting blocks 24, allowing the collection box 23 to be removed and the collected dust inside to be cleaned. After reinstallation, the installed collection box 23 is located inside the connecting port 21 and the fixed port 22. The collection box 23 and the two connecting blocks 24 are then confined inside the connecting port 21, preventing the mounting frame 4 from moving inside the outer shell 1 and ensuring the stability of the mounting frame 4 after installation. When the mounting frame 4 needs to be disassembled for thorough cleaning, simply remove the collection box 23, releasing the confinement between the mounting frame 4 and the outer shell 1. Then, pull the handle 5 forward, causing the mounting frame 4 to move synchronously, allowing the mounting frame 4 to be removed from inside the outer shell 1 through the mounting port 3.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-duct variable air volume terminal device, comprising a housing (1), an air intake fan (2) fixedly connected inside the housing (1), and an installation port (3) opened on the front side of the housing (1), the installation port (3) extending into the interior of the housing (1); The mounting frame (4) is located inside the outer casing (1), and the front side of the mounting frame (4) extends out of the outer casing (1) through the mounting port (3). The mounting frame (4) is located on the left side of the air intake fan (2). Its characteristic is that: The mounting frame (4) is equipped with a cleaning mechanism inside, which can clean and collect dust and other particulate matter. The cleaning mechanism includes a meshing groove (11), a second motor assembly (12), a worm (14), a rotating rod (15), a worm wheel (16), a second threaded rod (17), a cleaning block (18), two limiting grooves (19), two limiting blocks (20), a connecting port (21), a fixing port (22), a collection box (23), two connecting blocks (24), several sliding grooves (25), and several feed inlets (26).

2. The single-duct variable air volume terminal device according to claim 1, characterized in that: A handle (5) is fixedly connected to the front side of the mounting frame (4), and several fixed baffles (6) are fixedly connected inside the mounting frame (4), with the several fixed baffles (6) arranged at intervals. The mounting frame (4) has several sliding baffles (7) inside. The sliding baffles (7) are located on the right side of the fixed baffle (6). The sliding baffles (7) are in contact with the fixed baffle (6). The several sliding baffles (7) and the several fixed baffles (6) are arranged alternately. The front side of the mounting frame (4) is fixedly connected to the first motor assembly (8), the output end of the first motor assembly (8) is fixedly connected to the first drive shaft (9), and the rear end of the first drive shaft (9) extends into the interior of the mounting frame (4). The rear end of the first drive shaft (9) is fixedly connected to a first threaded rod (10), the rear end of the first threaded rod (10) is threaded through the sliding baffle (7), and the rear end of the first threaded rod (10) is rotatably connected to the rear wall of the mounting frame (4).

3. The single-duct variable air volume terminal device according to claim 1, characterized in that: The engagement groove (11) is opened inside the mounting frame (4), and the engagement groove (11) is set on the upper side of the top wall of the mounting frame (4). The second motor assembly (12) is fixedly connected to the front side of the mounting frame (4). The output end of the second motor assembly (12) is fixedly connected to the second drive shaft (13), the rear end of the second drive shaft (13) extends into the interior of the meshing groove (11), and the worm (14) is fixedly connected to the rear end of the second drive shaft (13). The rear end of the worm (14) is rotatably connected to the rear wall of the meshing groove (11), and the rotating rod (15) is rotatably connected to the top wall of the meshing groove (11). The rotating rod (15) is located on the right side of the worm (14).

4. The single-duct variable air volume terminal device according to claim 3, characterized in that: The lower end of the rotating rod (15) extends into the interior of the mounting frame (4), and the worm wheel (16) is fixedly sleeved on the outer surface of the rotating rod (15). The worm wheel (16) is set inside the meshing groove (11) and meshes with the worm (14). The second threaded rod (17) is fixedly connected to the lower end of the rotating rod (15). The lower end of the second threaded rod (17) is fixedly connected to a fixing ring. The cleaning block (18) is slidably connected inside the mounting frame (4). The cleaning block (18) is set on the left side of the fixed baffle (6). The second threaded rod (17) thread passes through the cleaning block (18). The right side of the cleaning block (18) is a brush bristle, which simultaneously contacts the fixed baffle (6) and the sliding baffle (7). Two limiting grooves (19) are respectively opened on the side of the cleaning block (18) that are far apart from each other. Two limiting blocks (20) are fixedly connected to the front and rear walls of the mounting frame (4) respectively, and the two limiting blocks (20) are respectively adapted to the two limiting grooves (19).

5. The single-duct variable air volume terminal device according to claim 1, characterized in that: The connection port (21) is opened on the bottom wall of the outer shell (1) and extends into the interior of the outer shell (1). The fixing port (22) is opened on the bottom wall of the mounting frame (4) and extends into the interior of the mounting frame (4). The collection box (23) is set inside the fixing port (22), and two connecting blocks (24) are fixedly connected to the front and rear sides of the collection box (23) respectively. Bolts are provided on the lower side of the two connecting blocks (24).

6. A single-duct variable air volume terminal device according to claim 5, characterized in that: The two connecting blocks (24) are fixedly connected to the mounting frame (4) by bolts, and several sliding grooves (25) are all opened on the bottom wall of the mounting frame (4); Several sliding grooves (25) are respectively set at the interval between the front and back of several fixed baffles (6), and several feed inlets (26) are all opened on the right side of the collection box (23). The feed inlets (26) are adapted to the sliding grooves (25).

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