Clean air exhaust channel of building heating, ventilation and air conditioning system

Abstract

The utility model discloses a building heating ventilation air conditioning system clean wind exhaust passage, including filter device, connecting mechanism, filter box, fan I, fan II, connecting mechanism one end connects the air port of building, and the other end is fixedly connected with filter device and filter box respectively, and one side of fan I is fixedly connected with filter device through the pipeline, and one side of fan II is fixedly connected with filter box through the pipeline, and the other side of fan I, fan II is connected with gas processing device through the pipeline respectively, and the fan I of opening and filter device connection, the gas in building enters filter device and carries out the filtration through connecting mechanism, and subsequently gas is sent into gas processing device and carries out the subsequent purification treatment. The utility model discloses can realize the convenient disassembly maintenance of equipment while guaranteeing that the equipment carries out normal exhaust work continuously.

Description

Technical Field

[0001] This utility model belongs to the technical field of air handling equipment, and specifically relates to a clean air exhaust duct for a building heating, ventilation and air conditioning system. Background Technology

[0002] In cleanrooms or places with high air quality requirements, it is usually necessary to exhaust contaminated or no longer meeting cleanliness requirements through a duct system. However, during use, a large amount of pollutants will accumulate inside the system, which will not only increase system resistance, reduce air volume, and increase energy consumption, but may also become a continuous source of pollution. Furthermore, when the system pressure fluctuates or maintenance is performed, these pollutants may be blown out in the opposite direction, causing serious secondary pollution and safety accidents.

[0003] A search revealed an exhaust system for a lithium battery cleanroom, with prior art publication number CN223271391U. This system uses a fan to control gas exhaust from the main duct. An annular baffle covers a porous structure. When the upper and lower airflow sensors detect normal readings, the controller energizes a de-energized electromagnet, attracting a magnetic metal block, maintaining this state. When exhaust is abnormal, the airflow sensor detects an excessive flow rate difference. The controller then de-energizes the de-energized electromagnet, causing the magnetic metal block to slide down a connecting rope under gravity, pulling the annular baffle upwards and fully exposing the porous structure. At this point, most of the airflow escapes through the porous structure, maintaining basic exhaust ventilation for the cleanroom.

[0004] A search revealed a lithium battery production waste gas filtration device with existing technology announcement number CN222658181U. This device controls the exhaust gas from the workshop to be purified and discharged after passing through an inclined filter controlled by an external exhaust fan. Simultaneously, the electromagnets are de-energized, attracting and fixing with the filter's magnetic blocks. The de-energized electromagnets on both sides generate magnetic force to attract the silicone pad with metal plates, achieving a complete seal. When replacement is needed, the de-energized electromagnets on both sides are first energized to demagnetize them, releasing the side seals. Then, the bottom electromagnet is energized, generating a magnetic force that repels the magnetic blocks, causing the entire filter to pop out from the top mounting port for replacement.

[0005] However, both of these devices require the control equipment to be stopped before maintenance can be carried out, and the devices contain complex circuit systems that require more professional maintenance personnel to perform maintenance.

[0006] Therefore, a clean air exhaust duct for building HVAC systems is needed, which can facilitate the disassembly and maintenance of the equipment while ensuring that the equipment can continuously perform normal exhaust operations. Summary of the Invention

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a clean air exhaust channel for a building HVAC system. This utility model, through the connection mechanism and the filter box, ensures that the device can operate normally during the maintenance of the filter device by the staff. At the same time, the filter device can achieve self-cleaning, ensuring the continuous and stable operation of the system.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A clean air exhaust duct for a building HVAC system includes a filter device, a connecting mechanism, a filter box, a fan I, and a fan II. One end of the connecting mechanism is connected to the building's air vent, and the other end is fixedly connected to the filter device and the filter box, respectively. One side of the fan I is fixedly connected to the filter device via a pipe, and one side of the fan II is fixedly connected to the filter box via a pipe. The other sides of the fans I and II are respectively connected to a gas treatment device via pipes. The filter box is equipped with a honeycomb activated carbon adsorption plate.

[0010] The filtration device includes a mounting box, a filter plate, guide rods, a cleaning mechanism, a recovery mechanism, a lifting mechanism, a sealing gasket, and a pressure plate. The filter plate has two ends located in slots on both sides of the mounting box, with its top and bottom slidably connected to slots I and II fixedly connected to the top and bottom of the mounting box, respectively. A limiting groove is located outside the slot and fixedly connected to the mounting box. Several guide rods are provided, each located on one side of the filter plate and fixedly connected to both sides of the mounting box. Two sets of lifting mechanisms are provided, each located on one side of the filter plate and fixedly connected to a pair of connecting slots at the bottom of the mounting box. The cleaning mechanism is located on one side of the filter plate and connected to a through hole at the top of the mounting box and one set of lifting mechanisms. The recovery mechanism is located on the other side of the filter plate and connected to connecting holes on both sides of the mounting box and another set of lifting mechanisms. Two sets of pressure plates are provided, fixedly connected to the mounting box via bolts inside the limiting groove, and a sealing gasket is provided between the mounting box and the pressure plate.

[0011] The cleaning mechanism includes a shielding groove, a sliding groove I, a connecting block I, a spray pipe, and a water inlet hose; one side of the shielding groove is attached to one side of the filter plate, and the other side is slidably connected to a pair of guide rods through two sets of connecting blocks I, and one side of the sliding groove I is fixedly connected to the two sets of connecting blocks I; the nozzle on the spray pipe is located inside the shielding groove, and one side of the spray pipe is connected to the water source through the water inlet hose passing through the through hole at the top of the mounting box.

[0012] The recycling mechanism is equipped with a receiving trough, a sliding chute II, a connecting block II, and a discharge hose. One side of the receiving trough is attached to the other side of the filter plate, and the other side is slidably connected to another pair of guide rods through two sets of connecting blocks II. One side of the sliding chute II is fixedly connected to the two sets of connecting blocks II. There is a pair of discharge hoses, and one end of the pair of discharge hoses is fixedly connected to the discharge ports at both ends of the receiving trough, and the other end passes through the connecting holes on both sides of the mounting box and is connected to the sewage pump.

[0013] The lifting mechanism includes a connecting box, sliding blocks, connecting rod I, connecting rod II, and electric push cylinders. The connecting box is fixedly connected to the connecting groove, and the cylinder bodies of a pair of electric push cylinders are symmetrically fixedly connected inside the connecting box. A pair of sliding blocks are provided, which are slidably connected to both ends of the connecting box, and the extended ends of the pair of electric push cylinders are fixedly connected to the pair of sliding blocks respectively. Connecting rod I and connecting rod II are rotatably connected together, and one end of connecting rod I and connecting rod II is rotatably connected to a pair of sliding blocks, while the other end is slidably connected to sliding groove I or sliding groove II.

[0014] The connecting mechanism includes an air inlet pipe, sealing plate I, a spare pipe, sealing plate II, an air inlet, a baffle, and a motor housing. One end of the air inlet pipe is fixedly connected to a connection port in the building, and the other end is fixedly connected to a connection port on one side of the mounting box. Sealing plate I is fixedly connected inside the air inlet pipe. The top of the spare pipe is fixedly connected to the bottom of the air inlet pipe, and the bottom is fixedly connected to the filter box. Sealing plate II is fixedly connected inside the spare pipe. The bottom of the baffle is rotatably connected to the air inlet pipe via a connecting shaft. The motor in the motor housing is fixedly connected to the connecting shaft on the baffle via an output shaft passing through a through hole in the air inlet pipe. The motor housing is fixedly connected to the outside of the air inlet pipe.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1) The cleaning mechanism, recycling mechanism and lifting mechanism in the filtration device work together to realize online water rinsing and automatic lifting cleaning of the filter plate, which significantly improves the cleaning efficiency;

[0017] 2) By using the slots on the mounting box in conjunction with the sealing gaskets and pressure plates, the new filter plates are inserted into the mounting box while the old filter plates are pushed out of the mounting box. This allows for the rapid replacement of the filter plates without shutting down the system, ensuring continuous and stable operation of the system.

[0018] 3) A spare filter box is set up and the air duct is switched by a baffle, so that the main filter device can be repaired without affecting the overall operation of the system, which greatly improves the reliability and maintenance convenience of the system. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of a clean air exhaust duct structure for a building HVAC system according to this utility model;

[0020] Appendix Figure 2 It is attached Figure 1 A schematic diagram of the intermediate connecting mechanism;

[0021] Appendix Figure 3 It is attached Figure 1 A schematic diagram of the structure of the intermediate filtration device;

[0022] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the installation box in the middle;

[0023] Appendix Figure 5 It is attached Figure 1 Schematic diagram of the connection structure between the cleaning mechanism and the lifting mechanism;

[0024] Appendix Figure 6 It is attached Figure 1 Schematic diagram of the connection structure between the recovery mechanism and the lifting mechanism;

[0025] Appendix Figure 7 It is attached Figure 1 A schematic diagram of the recycling mechanism;

[0026] Appendix Figure 8 It is attached Figure 1 A schematic diagram of the cleaning mechanism;

[0027] In the diagram: 1. Filter device; 101. Mounting box; 1011. Slot I; 1012. Slot II; 1013. Slot; 1014. Connecting hole; 1015. Connecting groove; 1016. Limiting groove; 102. Filter plate; 103. Guide rod; 104. Cleaning mechanism; 1041. Shielding groove; 1042. Slide I; 1043. Connecting block I; 1044. Spray pipe; 1045. Water inlet hose; 105. Recycling mechanism; 1051. Receiving trough; 1052. Slide II; 105 3. Connecting block II; 1054. Discharge hose; 106. Lifting mechanism; 1061. Connecting box; 1062. Sliding block; 1063. Connecting rod I; 1064. Connecting rod II; 1065. Electric push cylinder; 107. Sealing gasket; 108. Pressure plate; 2. Connecting mechanism; 201. Air inlet pipe; 2011. Sealing plate I; 202. Spare pipe; 2021. Sealing plate II; 203. Air inlet; 204. Baffle; 2041. Motor box; 3. Filter box; 4. Fan I; 5. Fan II. Detailed Implementation

[0028] To facilitate understanding by those skilled in the art, the following is in conjunction with the appendix. Figure 1-8 The technical solution of this utility model will be further described in detail below.

[0029] A clean air exhaust duct for a building HVAC system includes a filter device 1, a connecting mechanism 2, a filter box 3, a fan I 4, and a fan II 5. One end of the connecting mechanism 2 is connected to the building's air vent, and the other end is fixedly connected to the filter device 1 and the filter box 3, respectively. One side of the fan I 4 is fixedly connected to the filter device 1 via a pipe, and one side of the fan II 5 is fixedly connected to the filter box 3 via a pipe. The other sides of the fans I 4 and II 5 are respectively connected to a gas treatment device via pipes. The filter box 3 is equipped with a honeycomb activated carbon adsorption plate inside.

[0030] The filter device 1 includes a mounting box 101, a filter plate 102, guide rods 103, a cleaning mechanism 104, a recycling mechanism 105, a lifting mechanism 106, a sealing gasket 107, and a pressure plate 108. The filter plate 102 has its two ends located in slots 1013 on both sides of the mounting box 101. Its top and bottom are slidably connected to slots I 1011 and II 1012, which are fixedly connected to the top and bottom of the mounting box 101, respectively. A limiting groove 1016 is located outside the slots 1013 and fixedly connected to the mounting box 101. Several guide rods 103 are provided, and these guide rods 103 are located on both sides of the filter plate 102 and connected to the mounting box 101. The filter plate 102 is fixedly connected to the side; the lifting mechanism 106 is provided in two sets, which are respectively located on both sides of the filter plate 102 and fixedly connected to a pair of connecting grooves 1015 at the bottom of the mounting box 101; the cleaning mechanism 104 is located on one side of the filter plate 102 and connected to the through hole at the top of the mounting box 101 and a set of lifting mechanisms 106; the recycling mechanism 105 is located on the other side of the filter plate 102 and connected to the connecting holes 1014 on both sides of the mounting box 101 and another set of lifting mechanisms 106; the pressure plate 108 is provided in two sets, which are fixedly connected to the mounting box 101 by bolts on the inside of the limiting groove 1016, and a sealing gasket 107 is provided between the mounting box 101 and the pressure plate 108.

[0031] The cleaning mechanism 104 is provided with a shielding groove 1041, a sliding groove I 1042, a connecting block I 1043, a spray pipe 1044, and a water inlet hose 1045. One side of the shielding groove 1041 is attached to one side of the filter plate 102, and the other side is slidably connected to a pair of guide rods 103 through two sets of connecting blocks I 1043. One side of the sliding groove I 1042 is fixedly connected to two sets of connecting blocks I 1043. The nozzle on the spray pipe 1044 is located inside the shielding groove 1041, and one side of the spray pipe 1044 is connected to the water source through the through hole at the top of the mounting box 101 via the water inlet hose 1045.

[0032] The recycling mechanism 105 is provided with a receiving trough 1051, a sliding chute II 1052, a connecting block II 1053, and a discharge hose 1054. One side of the receiving trough 1051 is attached to the other side of the filter plate 102, and the other side is slidably connected to another pair of guide rods 103 through two sets of connecting blocks II 1053. One side of the sliding chute II 1052 is fixedly connected to the two sets of connecting blocks II 1053. A pair of discharge hoses 1054 are provided, and one end of the pair of discharge hoses 1054 is fixedly connected to the discharge ports at both ends of the receiving trough 1051, and the other end passes through the connecting holes 1014 on both sides of the mounting box 101 and is connected to the sewage pump.

[0033] The lifting mechanism 106 includes a connecting box 1061, a sliding block 1062, a connecting rod I 1063, a connecting rod II 1064, and an electric push cylinder 1065. The connecting box 1061 is fixedly connected to the connecting groove 1015, and the cylinder bodies of a pair of electric push cylinders 1065 are symmetrically fixedly connected inside the connecting box 1061. A pair of sliding blocks 1062 are provided, which are slidably connected to both ends of the connecting box 1061, and the extended ends of the pair of electric push cylinders 1065 are fixedly connected to the pair of sliding blocks 1062. The connecting rods I 1063 and II 1064 are rotatably connected together, and one end of the connecting rods I 1063 and II 1064 is rotatably connected to the pair of sliding blocks 1062, and the other end is slidably connected to the sliding groove I 1042 or the sliding groove II 1052.

[0034] The connecting mechanism 2 includes an air inlet pipe 201, a sealing plate I 2011, a spare pipe 202, a sealing plate II 2021, an air inlet 203, a baffle 204, and a motor housing 2041. One end of the air inlet pipe 201, the air inlet 203, is fixedly connected to a connection port in the building, and the other end is fixedly connected to a connection port on one side of the mounting box 101. A sealing plate I 2011 is fixedly connected inside the air inlet pipe 201. The top of the spare pipe 202 is fixedly connected to the bottom of the air inlet pipe 201, and the bottom is fixedly connected to the filter box 3. A sealing plate II 2021 is fixedly connected inside the spare pipe 202. The bottom of the baffle 204 is rotatably connected to the air inlet pipe 201 via a connecting shaft. The motor in the motor housing 2041 is fixedly connected to the connecting shaft on the baffle 204 via an output shaft passing through a through hole in the air inlet pipe 201. The motor housing 2041 is fixedly connected to the outside of the air inlet pipe 201.

[0035] A clean air exhaust duct for a building HVAC system, the working process of which is as follows:

[0036] Turn on the fan I4 connected to the filter device 1. The gas in the building passes through the air inlet pipe 201 in the connecting mechanism 2 and enters the installation box 101 in the filter device 1. After being filtered by the filter plate 102, it enters the gas treatment device for subsequent purification treatment.

[0037] After prolonged use, a large amount of solid waste will accumulate on the filter plate 102. At this time, the water source is turned on, and the spray pipe 1044 in the cleaning mechanism 104 sprays water to rinse the filter plate 102. Then, the water flow carries the washed-off solid waste into the receiving trough 1051 in the recycling mechanism 105. Under the action of the sewage pump, the water and solid waste are extracted through the discharge hose 1054. At the same time, the electric push cylinders 1065 in the two sets of lifting mechanisms 106 operate synchronously, controlling the sliding block 1062 to slide along the connecting box 1061, thereby controlling the connecting rod I 1063 and connecting rod II 1064 to drive the shielding groove 1041 and the receiving trough 1051 to rise and fall synchronously, thus completing the cleaning of the filter plate 102.

[0038] When filter plate 102 is damaged and needs to be replaced, remove pressure plate 108 and sealing gasket 107, align the new filter plate 102 with the old filter plate 102, and then push the new filter plate 102 into the mounting box 101 from the slot 1013 on one side of the mounting box 101. At the same time, the old filter plate 102 is pushed out from the slot 1013 on the other side of the mounting box 101 by the new filter plate 102. After the two ends of the new filter plate 102 are aligned with the slots 1013 on both sides of the mounting box 101, reinstall pressure plate 108 and sealing gasket 107 back onto the mounting box 101. The replacement of filter plate 102 can be completed while ensuring the normal operation of the device.

[0039] When the filter device 1 needs maintenance, the baffle 204 is rotated by the motor control in the motor box 2041 until the baffle 204 is in contact with the sealing sheet I 2011. Then, the fan I 4 is turned off and the fan II 5 is turned on so that the gas in the building passes through the filter box 3 and enters the gas treatment device. After the maintenance of the filter device 1 is completed, the baffle 204 is reset by the motor control in the motor box 2041, and the fan II 5 is turned off and the fan I 4 is turned on so that the route of the fan I 4 and the filter device 1 to filter the gas is restored to normal use.

[0040] In the description of this invention, the connection methods are divided into fixed connection and movable connection. Fixed connection methods include, but are not limited to, welding and bolting; movable connection methods include, but are not limited to, sliding connection, rotating connection and threaded connection. The connection method to achieve the desired effect should be selected according to the application of the solution.

[0041] In summary, the power systems, including but not limited to motors, electric cylinders, and their respective transmission systems, are equipped with protective covers according to their actual installation locations to prevent external environmental factors from causing wear or damage to the power and transmission systems, thereby ensuring their normal operation.

[0042] In summary, the components, including but not limited to motors, electronic or electrical components, are existing components that are custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art, and the power for each component is provided by an external power source. Therefore, they are not within the scope of protection of this utility model.

[0043] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A clean air exhaust duct for a building heating, ventilation and air conditioning system, comprising a filter device, a connecting mechanism, a filter box, a fan I, and a fan II; one end of the connecting mechanism is connected to the building's air outlet, and the other end is fixedly connected to the filter device and the filter box respectively; one side of the fan I is fixedly connected to the filter device via a pipe, one side of the fan II is fixedly connected to the filter box via a pipe, and the other sides of the fan I and fan II are respectively connected to a gas treatment device via pipes; Its features The filtration device includes a mounting box, a filter plate, guide rods, a cleaning mechanism, a recovery mechanism, a lifting mechanism, a sealing gasket, and a pressure plate. The filter plate has two ends located in slots on both sides of the mounting box, with its top and bottom slidably connected to slots I and II fixedly connected to the top and bottom of the mounting box, respectively. A limiting groove is located outside the slot and fixedly connected to the mounting box. Several guide rods are provided, each located on one side of the filter plate and fixedly connected to both sides of the mounting box. Two sets of lifting mechanisms are provided, each located on one side of the filter plate and fixedly connected to a pair of connecting slots at the bottom of the mounting box. The cleaning mechanism is located on one side of the filter plate and connected to a through hole at the top of the mounting box and one set of lifting mechanisms. The recovery mechanism is located on the other side of the filter plate and connected to connecting holes on both sides of the mounting box and another set of lifting mechanisms. Two sets of pressure plates are provided, fixedly connected to the mounting box via bolts inside the limiting groove, and a sealing gasket is provided between the mounting box and the pressure plate.

2. The clean air exhaust duct of a building HVAC system according to claim 1, characterized in that... The cleaning mechanism includes a shielding groove, a sliding groove I, a connecting block I, a spray pipe, and a water inlet hose; one side of the shielding groove is attached to one side of the filter plate, and the other side is slidably connected to a pair of guide rods through two sets of connecting blocks I, and one side of the sliding groove I is fixedly connected to the two sets of connecting blocks I; the nozzle on the spray pipe is located inside the shielding groove, and one side of the spray pipe is connected to the water source through the water inlet hose passing through the through hole at the top of the mounting box.

3. A clean air exhaust duct for a building HVAC system according to claim 1, characterized in that... The recycling mechanism is equipped with a receiving trough, a sliding chute II, a connecting block II, and a discharge hose. One side of the receiving trough is attached to the other side of the filter plate, and the other side is slidably connected to another pair of guide rods through two sets of connecting blocks II. One side of the sliding chute II is fixedly connected to the two sets of connecting blocks II. There is a pair of discharge hoses, and one end of the pair of discharge hoses is fixedly connected to the discharge ports at both ends of the receiving trough, and the other end passes through the connecting holes on both sides of the mounting box and is connected to the sewage pump.

4. A clean air exhaust duct for a building HVAC system according to claim 1, characterized in that... The lifting mechanism includes a connecting box, sliding blocks, connecting rod I, connecting rod II, and electric push cylinders. The connecting box is fixedly connected to the connecting groove, and the cylinder bodies of a pair of electric push cylinders are symmetrically fixedly connected inside the connecting box. A pair of sliding blocks are provided, which are slidably connected to both ends of the connecting box, and the extended ends of the pair of electric push cylinders are fixedly connected to the pair of sliding blocks respectively. Connecting rod I and connecting rod II are rotatably connected together, and one end of connecting rod I and connecting rod II is rotatably connected to a pair of sliding blocks, while the other end is slidably connected to sliding groove I or sliding groove II.

5. A clean air exhaust duct for a building HVAC system according to claim 1, characterized in that... The connecting mechanism includes an air inlet pipe, sealing plate I, a spare pipe, sealing plate II, an air inlet, a baffle, and a motor housing. One end of the air inlet pipe is fixedly connected to a connection port in the building, and the other end is fixedly connected to a connection port on one side of the mounting box. Sealing plate I is fixedly connected inside the air inlet pipe. The top of the spare pipe is fixedly connected to the bottom of the air inlet pipe, and the bottom is fixedly connected to the filter box. Sealing plate II is fixedly connected inside the spare pipe. The bottom of the baffle is rotatably connected to the air inlet pipe via a connecting shaft. The motor in the motor housing is fixedly connected to the connecting shaft on the baffle via an output shaft passing through a through hole in the air inlet pipe. The motor housing is fixedly connected to the outside of the air inlet pipe.

6. A clean air exhaust duct for a building HVAC system according to claim 1, characterized in that... The filter box is equipped with a honeycomb activated carbon adsorption plate.

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