Walk-in fume hood

Abstract

The utility model discloses a step -in type ventilation cabinet, including house main part, the inner chamber of house main part is provided with ventilation cabinet body, the surface of house main part is provided with power module, controller, room controller, monitoring panel, air quality sensor and reset switch, the upper end of one side of house main part is provided with exhaust duct, one side of exhaust duct is provided with centrifugal fan, one side of house main part is provided with air supply duct. The utility model discloses a centrifugal fan through exhaust duct exports the foul air in house main part, and the fresh air is sent to the room through air supply duct by the air supply machine, realizes the efficient ventilation of ventilation cabinet room, can effectively reduce indoor harmful gas concentration, guarantees indoor air quality. Flow sensor can real -time monitoring the air volume in exhaust duct, and variable air volume valve quick actuator adjusts variable air volume valve according to the information feedback of flow sensor, to accurate control exhaust capacity.

Description

Technical Field

[0001] This utility model relates to the field of fume hood technology, specifically to walk-in fume hoods. Background Technology

[0002] Cabinet-type exhaust hoods, commonly known as fume hoods, are similar to enclosed hoods. Small parts spray painting cabinets and chemical laboratory fume hoods are typical examples of cabinet-type exhaust hood structures. Large chamber-type fume hoods have one side completely open, allowing operators to work inside; they are mainly used for painting large parts and bagging powder materials. The working opening of the fume hood significantly affects the airflow distribution inside, which in turn directly impacts the effectiveness of the cabinet-type exhaust hood.

[0003] However, existing fume hoods lack automatic adjustment functions during actual use, which prevents them from adjusting the air or wind speed in a timely and effective manner, thus reducing their efficiency. Therefore, we propose the walk-in fume hood. Utility Model Content

[0004] The purpose of this invention is to provide a walk-in fume hood to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a walk-in fume hood, comprising a main body, with the fume hood body disposed within the inner cavity of the main body, and a power module, controller, room controller, monitoring panel, air quality sensor, and reset switch disposed on the surface of the main body, an exhaust duct disposed at the upper end of one side of the main body, a centrifugal fan disposed on one side of the exhaust duct, an air supply duct disposed on one side of the main body, a flow detector and a variable air volume valve disposed on the right side of the air supply duct, a makeup air fan disposed on the left side of the air supply duct, a flow sensor disposed on one side of the exhaust duct, and a quick actuator for the variable air volume valve disposed on the surface of the flow sensor.

[0006] Preferably, a display panel is provided on the front of the fume hood body, and a display screen is provided on the surface of the display panel.

[0007] Preferably, an exhaust hood is provided at the middle of the top of the fume hood body, and an exhaust pipe is provided at the top of the exhaust hood.

[0008] Preferably, the bottom of the fume hood body is provided with support legs, and the bottom of the support legs is provided with casters. The top of the back of the fume hood body is fixedly installed with a motor by bolts. The output end of the motor is driven by a synchronous belt. The inner side of the synchronous belt is fixedly connected to a connecting block by teeth. The inner side of the connecting block is fixedly connected to a connecting rod. The inner side of the connecting rod is fixedly connected to a lifting door.

[0009] Preferably, a sliding groove is provided on the back of the fume hood body, and a slider is slidably connected to the inner cavity of the sliding groove, and the inner side of the lifting door is fixedly connected to the sliding surface.

[0010] Preferably, both ends of the upper back of the fume hood body are fixedly connected to a transmission rod via bearings, and the outer surface of the transmission rod is connected to the inner surface of the synchronous belt.

[0011] Preferably, a power cord is provided on the back of the power module, and one end of the power cord is unidirectionally electrically connected to an external power source.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model utilizes a centrifugal fan to exhaust stale air from the main building through an exhaust duct, while a makeup air fan supplies fresh air into the room through a supply duct. This achieves efficient ventilation in the room where the fume hood is located, effectively reducing the concentration of harmful gases and ensuring indoor air quality. A flow sensor monitors the airflow in the exhaust duct in real time, and a variable air volume (VAV) valve actuator adjusts the VAV valve based on feedback from the flow sensor, thus precisely controlling the exhaust volume. A flow detector and the VAV valve monitor and adjust the supply air volume in the supply duct, ensuring a balance between supply and exhaust air volumes and maintaining stable indoor airflow.

[0014] 2. This utility model uses an air quality sensor to monitor the air quality in a room in real time and transmits the data to the controller and room controller. When the air quality is substandard, the controller can automatically adjust the operating parameters of the centrifugal fan and make-up air fan, as well as the opening of the variable air volume valve, to achieve intelligent ventilation control. The monitoring panel allows staff to view the operating status of the fume hood and room, air quality, and other information in real time, facilitating remote monitoring and management. The reset switch can quickly restore the system to its initial state in case of equipment abnormality or malfunction, ensuring the normal operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the centrifugal fan structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the air supply duct structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the synchronous belt structure of this utility model.

[0019] In the diagram: 1. Main building structure; 2. Display panel; 3. Fume hood body; 4. Air quality sensor; 5. Exhaust hood; 6. Variable air volume valve quick actuator; 7. Power module; 8. Controller; 9. Flow sensor; 10. Exhaust duct; 11. Room controller; 12. Centrifugal fan; 13. Make-up air fan; 14. Flow detector; 15. Variable air volume valve; 16. Monitoring panel; 17. Reset switch; 18. Supply air duct; 19. Drive rod; 20. Connecting block; 21. Synchronous belt; 22. Connecting rod; 23. Lifting door; 24. Motor; 25. Slide rail. Detailed Implementation

[0020] 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.

[0021] This application includes the following components: 1. Main building structure; 2. Display panel; 3. Fume hood body; 4. Air quality sensor; 5. Exhaust hood; 6. Variable air volume valve quick actuator; 7. Power module; 8. Controller; 9. Flow sensor; 10. Exhaust duct; 11. Room controller; 12. Centrifugal fan; 13. Make-up air fan; 14. Flow detector; 15. Variable air volume valve; 16. Monitoring panel; 17. Reset switch; 18. Supply air duct; 19. Drive rod; 20. Connecting block; 21. Synchronous belt; 22. Connecting rod; 23. Lifting door; 24. Motor; 25. Slide rail. All components are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals or conventional experimental methods.

[0022] Example 1:

[0023] Please see Figures 1-4 The following technical solution is provided, specifically disclosed: a walk-in fume hood, including a main body 1, a fume hood body 3 is provided in the inner cavity of the main body 1, a power module 7, a controller 8, a room controller 11, a monitoring panel 16, an air quality sensor 4 and a reset switch 17 are provided on the surface of the main body 1, an exhaust duct 10 is provided at the upper end of one side of the main body 1, a centrifugal fan 12 is provided on one side of the exhaust duct 10, an air supply duct 18 is provided on one side of the main body 1, a flow detector 14 and a variable air volume valve 15 are provided on the right side of the air supply duct 18, a makeup air fan 13 is provided on the left side of the air supply duct 18, a flow sensor 9 is provided on one side of the exhaust duct 10, and a variable air volume valve quick actuator 6 is provided on the surface of the flow sensor 9;

[0024] In actual use, the centrifugal fan 12 exhausts stale air from the main building 1 through the exhaust duct 10, while the make-up air fan 13 supplies fresh air into the room through the supply duct 18, achieving efficient ventilation in the room where the fume hood is located. This effectively reduces the concentration of harmful gases indoors and ensures indoor air quality. The flow sensor 9 monitors the air volume in the exhaust duct 10 in real time, and the variable air volume valve quick actuator 6 adjusts the variable air volume valve based on the information fed back by the flow sensor 9, thereby precisely controlling the exhaust volume. The flow detector 14 and the variable air volume valve 15 monitor and adjust the supply air volume in the supply duct 18 to ensure the balance of supply and exhaust air volumes and maintain stable indoor air flow.

[0025] Example 2:

[0026] Please see Figure 1 and Figure 2 The following technical solution is provided, specifically: a display panel 2 is provided on the front of the fume hood body 3, and a display screen is provided on the surface of the display panel 2; an exhaust hood 5 is provided at the middle of the top of the fume hood body 3, and an exhaust pipe is provided on the top of the exhaust hood 5; a support leg is provided at the bottom of the fume hood body 3, and a caster wheel is provided at the bottom of the support leg; a motor 24 is fixedly installed on the top of the back of the fume hood body 3 by bolts; a synchronous belt 21 is driven and connected to the output end of the motor 24; and a connecting block 2 is fixedly connected to the inner side of the synchronous belt 21 by teeth. 0. A connecting rod 22 is fixedly connected to the inner side of the connecting block 20. A lifting door 23 is fixedly connected to the inner side of the connecting rod 22. A slide groove 25 is opened on the back of the fume hood body 3. A slider is slidably connected to the inner cavity of the slide groove 25. The inner side of the lifting door 23 is fixedly connected to the sliding surface. Both ends of the upper back of the fume hood body 3 are fixedly connected to the transmission rod 19 through bearings. The outer surface of the transmission rod 19 is connected to the inner surface of the synchronous belt 21. A power cord is provided on the back of the power module 7, and one end of the power cord is unidirectionally electrically connected to an external power source.

[0027] In practical use, the air quality sensor 4 monitors the room's air quality in real time and transmits the data to the controller 8 and room controller 11. When the air quality is substandard, the controller automatically adjusts the operating parameters of the centrifugal fan 12 and the make-up air fan 13, as well as the opening of the variable air volume valve, to achieve intelligent ventilation control. The monitoring panel 16 allows staff to view the operating status of the fume hood and room, air quality, and other information in real time, facilitating remote monitoring and management. The reset switch 17 can quickly restore the system to its initial state in case of equipment abnormality or malfunction, ensuring the normal operation of the equipment.

[0028] During use: Check that the power module 7 is supplying power normally to ensure a stable power connection for the fume hood and related equipment. Check that the movable door of the fume hood body 3 is closed and that the casters are securely fixed. Turn on the controller 8, room controller 11, and monitoring panel 16 to perform system initialization settings. The air quality sensor 4 begins real-time monitoring of the room's air quality and transmits the data to the controller 8 and room controller 11. Based on the indoor air quality, the controller 8 or room controller 11 starts the centrifugal fan 12 and the make-up air fan 13. The centrifugal fan 12 exhausts stale air from the room through the exhaust duct 10, and the make-up air fan 13 supplies fresh air into the room through the supply duct 18. The flow sensor 9 monitors the air volume in the exhaust duct 10 in real time and transmits the data to the variable air volume valve quick actuator 6. The variable air volume valve quick actuator 6 adjusts the opening of the variable air volume valve according to the air volume data to precisely control the exhaust volume. Flow detector 14 monitors the air volume in the supply air duct 18 in real time. Room controller 11 adjusts the opening of variable air volume valve 15 based on the information fed back by flow detector 14 to ensure a balance between supply and exhaust air volumes. Operators can open the movable door of the fume hood body 3 by the handle to conduct experiments or retrieve items. Harmful gases generated inside the fume hood enter the exhaust duct 10 through the exhaust hood 5 and exhaust pipe and are discharged outdoors. Display panel 2 displays the operating parameters and internal environmental information of the fume hood in real time, allowing operators to understand the working status of the fume hood. When air quality sensor 4 detects that the indoor air quality is seriously substandard or the equipment malfunctions, controller 8 or room controller 11 issues an alarm signal. Operators can view the fault information through monitoring panel 16 and take appropriate action. To restore the system, press the reset switch 17. Simultaneously, adjust the position of the sliding door 23 according to actual usage needs. Start the motor 24, which drives the synchronous belt 21 to rotate. The synchronous belt 21 drives the connecting block 20, the connecting rod 22 inside the connecting block 20, and the sliding door 23 to move upwards or downwards, thereby adjusting the position of the sliding door 23. A transmission rod 19 is provided to ensure smooth movement of the sliding door 23 during adjustment. The cooperation between the slide groove 25 and the slider ensures synchronous sliding on both sides of the sliding door 23. After operation, the operator closes the movable door of the fume hood body 3. Turn off the power to the centrifugal fan 12, the make-up air fan 13, and related equipment to end the ventilation process.

[0029] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A walk-in fume hood, comprising a main body (1), characterized in that: The interior cavity of the main body (1) of the house is provided with a fume hood body (3). The surface of the main body (1) of the house is provided with a power module (7), a controller (8), a room controller (11), a monitoring panel (16), an air quality sensor (4) and a reset switch (17). An exhaust duct (10) is provided at the upper end of one side of the main body (1). A centrifugal fan (12) is provided on one side of the exhaust duct (10). An air supply duct (18) is provided on one side of the main body (1). A flow detector (14) and a variable air volume valve (15) are provided on the right side of the air supply duct (18). A makeup air fan (13) is provided on the left side of the air supply duct (18). A flow sensor (9) is provided on one side of the exhaust duct (10). A variable air volume valve quick actuator (6) is provided on the surface of the flow sensor (9).

2. The walk-in fume hood according to claim 1, characterized in that: The front of the fume hood body (3) is provided with a display panel (2), and the surface of the display panel (2) is provided with a display screen.

3. The walk-in fume hood according to claim 1, characterized in that: An exhaust hood (5) is provided at the middle of the top of the fume hood body (3), and an exhaust pipe is provided at the top of the exhaust hood (5).

4. The walk-in fume hood according to claim 1, characterized in that: The bottom of the fume hood body (3) is provided with support legs, and the bottom of the support legs is provided with casters.

5. The walk-in fume hood according to claim 1, characterized in that: A motor (24) is fixedly installed on the top of the back of the fume hood body (3) by bolts. The output end of the motor (24) is connected to a synchronous belt (21). A connecting block (20) is fixedly connected to the inner side of the synchronous belt (21) by teeth. A connecting rod (22) is fixedly connected to the inner side of the connecting block (20). A lifting door (23) is fixedly connected to the inner side of the connecting rod (22).

6. The walk-in fume hood according to claim 5, characterized in that: The back of the fume hood body (3) is provided with a sliding groove (25), and a slider is slidably connected to the inner cavity of the sliding groove (25). The inner side of the lifting door (23) is fixedly connected to the sliding surface.

7. The walk-in fume hood according to claim 5, characterized in that: Both ends of the upper back of the fume hood body (3) are fixedly connected to a transmission rod (19) by bearings, and the outer surface of the transmission rod (19) is connected to the inner surface of the synchronous belt (21) for transmission.

8. The walk-in fume hood according to claim 5, characterized in that: The power module (7) has a power cord on its back, and one end of the power cord is unidirectionally electrically connected to an external power source.

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