Differential pressure ventilation adjusting device for laboratory
By using a differential pressure sensor and a controller in the laboratory pressure differential ventilation adjustment device, the problem of inconvenience and poor accuracy of manual pressure differential adjustment in the prior art is solved, and the effect of automatic adjustment and energy consumption reduction is achieved.
Patent Information
- Application Number
- CN202421692166.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing laboratory pressure differential ventilation adjustment device requires manual adjustment of the pressure difference between the clean laboratory and the outside world. It is inconvenient to operate and poor accuracy, resulting in high energy consumption of the air purification system and waste of electricity.
A laboratory pressure differential ventilation adjustment device is designed, using a differential pressure sensor and controller to automatically adjust the working power of the pressure regulating fan, monitor and adjust the pressure difference in the laboratory in real time, and reduce power consumption.
It realizes automatic adjustment of laboratory pressure difference, improves operational convenience and accuracy, reduces the energy consumption of the air purification system, and avoids waste of electricity.
Smart Images
Figure CN222881312U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laboratory ventilation equipment, in particular to a laboratory pressure difference ventilation regulating device. Background Art
[0002] The laboratory pressure difference control device is an important part of the clean laboratory air purification system. Only by controlling the pressure difference in the clean laboratory and ensuring the reasonable airflow direction can the requirements of air purification in the laboratory be met. The clean laboratory must maintain a certain positive pressure so that the unpurified air from the outside will not enter the clean laboratory to ensure the cleanliness of the clean laboratory.
[0003] At present, the existing laboratory pressure differential ventilation adjustment device needs to be manually adjusted when adjusting the pressure difference between the clean laboratory and the outside world. This operation is inconvenient, and the accuracy of manual pressure adjustment is poor, and it will lead to high energy consumption of the air purification system and waste of electricity. Therefore, we propose a laboratory pressure differential ventilation adjustment device. Utility Model Content
[0004] The utility model aims to provide a laboratory pressure difference ventilation regulating device, which has the advantages of automatically adjusting the pressure difference and low energy consumption, and solves the problem that the existing laboratory pressure difference ventilation regulating device needs to be manually adjusted when adjusting the pressure difference between the clean laboratory and the outside world, which is inconvenient to operate, and the accuracy of manual pressure difference adjustment is poor, and it will lead to high energy consumption of the air purification system and waste of electricity.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a laboratory pressure difference ventilation adjustment device, comprising:
[0006] A regulating box, wherein an air inlet pipe is arranged at the middle end of the right side of the regulating box, a dust filter screen is fixedly connected to the right end of the inner cavity of the air inlet pipe, a first activated carbon filter screen, an electric heating screen and a second activated carbon filter screen are fixedly installed in the inner cavity of the regulating box from right to left in sequence, a plurality of equally spaced ultraviolet sterilization lamps are fixedly installed on the top of the inner cavity of the regulating box, a first temperature sensor is fixedly installed on the upper end of the left side of the inner cavity of the regulating box, a pressure-regulating fan is fixedly installed on the middle end of the left side of the regulating box, an air inlet end of the pressure-regulating fan is connected to the left side of the regulating box through a pipeline, an air outlet end of the pressure-regulating fan is connected to an air guide pipe, and a plurality of equally spaced air supply pipes are arranged at the bottom of the air guide pipe;
[0007] A controller, wherein the output end of the controller is electrically connected to a pressure difference sensor and a second temperature sensor through wires, and the input ends of the pressure regulating fan, the ultraviolet sterilization lamp and the first temperature sensor are electrically connected to the output end of the controller through wires.
[0008] Preferably, the controller is fixedly mounted on the upper end of the left side of the regulating box, and a microprocessor module is arranged inside the controller.
[0009] Preferably, the air supply duct is arranged on the top of the laboratory.
[0010] Preferably, the differential pressure sensor and the second temperature sensor are both arranged on the wall of the laboratory.
[0011] Preferably, an adjustment seat is provided at the rear of the adjustment box, a driving motor is fixedly installed on the top of the adjustment seat, an output end of the driving motor is fixedly connected to a lifting threaded rod, and the lower end of the lifting threaded rod is movably connected to the bottom of the inner cavity of the adjustment seat through a bearing, a moving block is threadedly connected to the outer surface of the lifting threaded rod, and the front side of the moving block is fixedly connected to the rear side of the adjustment box.
[0012] Preferably, mounting plates are fixedly connected to left and right sides of upper and lower ends of the adjustment seat, and a mounting hole is formed at one end of the mounting plate away from the adjustment seat.
[0013] Preferably, the front side of the regulating box is movably connected with a maintenance sealing door via a hinge, and a lock body is fixedly installed at one end of the maintenance sealing door.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0015] 1. The utility model is provided with a pressure differential sensor. When the device is working, the pressure differential sensor can transmit the pressure differential change in the laboratory to the controller in real time. After the controller completes the processing, the controller can automatically adjust the working power of the pressure regulating fan according to the feedback data. When the working power of the pressure regulating fan changes, the pressure regulating fan can automatically adjust the gas rate at the left end of the inner cavity of the regulating box. Then, the pressure regulating fan sends the sucked gas into the air duct, and the gas is discharged into the laboratory through the air supply duct, thereby achieving the purpose of automatically adjusting the pressure differential.
[0016] 2. The utility model uses the internal temperature conditions of the laboratory fed back by the second temperature sensor, combined with the data changes of the electric heating screen heating the purified gas fed back to the controller by the first temperature sensor, to facilitate the controller to automatically control the working power of the electric heating screen according to the temperature difference between inside and outside the laboratory, thereby reducing electricity consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;
[0018] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model from a third viewing angle;
[0020] Figure 4 This is a schematic diagram of the structure of the adjustment seat of the utility model.
[0021] In the figure: 1. adjustment box; 2. maintenance sealing door; 3. air inlet duct; 4. dust filter screen; 5. air supply duct; 6. air guide duct; 7. pressure difference sensor; 8. second temperature sensor; 9. pressure regulating fan; 10. controller; 11. adjustment seat; 12. drive motor; 13. first activated carbon filter; 14. electric heating screen; 15. ultraviolet sterilization lamp; 16. second activated carbon filter screen; 17. first temperature sensor; 18. mounting plate; 19. lifting threaded rod; 20. moving block. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] It should be noted that the regulating box 1, maintenance sealing door 2, air inlet duct 3, dust filter screen 4, air supply duct 5, air guide duct 6, pressure difference sensor 7, second temperature sensor 8, pressure regulating fan 9, controller 10, adjustment seat 11, drive motor 12, first activated carbon filter 13, electric heating screen 14, ultraviolet sterilization lamp 15, second activated carbon filter screen 16, first temperature sensor 17, mounting plate 18, lifting threaded rod 19 and moving block 20 components of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods, and are connected to the power supply circuit using the conventional connection method in the prior art, which will not be described in detail here.
[0026] Embodiment 1
[0027] See also Figure 1-Figure 3 As shown, the utility model provides a technical solution: a laboratory pressure difference ventilation adjustment device, comprising: a regulating box 1, a controller 10;
[0028] An air inlet pipe 3 is provided at the middle end of the right side of the regulating box 1, and a dust filter screen 4 is fixedly connected to the right end of the inner cavity of the air inlet pipe 3. The inner cavity of the regulating box 1 is fixedly installed with a first activated carbon filter screen 13, an electric heating screen 14 and a second activated carbon filter screen 16 from right to left in sequence. A plurality of equally spaced ultraviolet sterilization lamps 15 are fixedly installed on the top of the inner cavity of the regulating box 1, and a first temperature sensor 17 is fixedly installed on the upper end of the left side of the inner cavity of the regulating box 1. A pressure regulating fan 9 is fixedly installed at the middle end of the left side of the regulating box 1. The air inlet end of the pressure regulating fan 9 is connected to the left side of the regulating box 1 through a pipeline, and the air outlet of the pressure regulating fan 9 The end is connected to an air duct 6, and a plurality of equidistantly distributed air supply ducts 5 are arranged at the bottom of the air duct 6. The air supply ducts 5 are arranged on the top of the laboratory. The controller 10 is fixedly installed at the upper end of the left side of the regulating box 1, and a microprocessor module is arranged inside the controller 10. The output end of the controller 10 is electrically connected to a pressure difference sensor 7 and a second temperature sensor 8 through wires, respectively. The pressure difference sensor 7 and the second temperature sensor 8 are both arranged on the wall of the laboratory, and the input ends of the pressure regulating fan 9, the ultraviolet sterilization lamp 15 and the first temperature sensor 17 are electrically connected to the output end of the controller 10 through wires.
[0029] This technical solution: through the arrangement of the pressure difference sensor 7, the second temperature sensor 8 and the air supply pipe 5, they are arranged and installed on the wall and the top of the laboratory respectively. Then, when the device is working, the pressure difference sensor 7 and the second temperature sensor 8 can transmit the pressure difference and temperature change in the laboratory to the controller 10 in real time. After the controller 10 completes the processing, the controller 10 can automatically adjust the working power of the pressure regulating fan 9 according to the feedback data. When the working power of the pressure regulating fan 9 changes, the pressure regulating fan 9 can automatically adjust the gas rate of the left end of the inner cavity of the regulating box 1. Then, the pressure regulating fan 9 sends the sucked gas into the air duct 6, and the air supply pipe 5 discharges it into the laboratory. At this time, the interior of the regulating box 1 is in a negative pressure state, and the pressure regulating fan 9 is in a negative pressure state. The external air is forced to pass through the dust filter plate 4 through the air inlet pipe 3 to filter the dust and then enter the adjustment box 1. Then, the incoming gas passes through the first activated carbon filter 13, the electric heating screen 14 and the second activated carbon filter screen 16 in turn, which can achieve effective purification and heating of the gas. In conjunction with the use of multiple ultraviolet sterilization lamps 15, harmful bacteria in the gas can be effectively killed, thereby ensuring the purification effect of the gas. The internal temperature of the laboratory fed back by the second temperature sensor 8, combined with the data changes of the electric heating screen 14 heating the purified gas fed back to the controller 10 by the first temperature sensor 17, facilitates the controller 10 to automatically control the working power of the electric heating screen 14 according to the temperature difference inside and outside the laboratory, thereby reducing power consumption.
[0030] Embodiment 2
[0031] On the basis of embodiment 1, the utility model is as follows Figure 1 and Figure 2 as well as Figure 4 As shown, an adjustment seat 11 is provided at the rear of the adjustment box 1, a driving motor 12 is fixedly installed on the top of the adjustment seat 11, a lifting threaded rod 19 is fixedly connected to the output end of the driving motor 12, and the lower end of the lifting threaded rod 19 is movably connected to the bottom of the inner cavity of the adjustment seat 11 through a bearing, a moving block 20 is threadedly connected to the outer surface of the lifting threaded rod 19, and the front of the moving block 20 is fixedly connected to the rear side of the adjustment box 1, mounting plates 18 are fixedly connected to the left and right sides of the upper and lower ends of the adjustment seat 11, and a mounting hole is opened at one end of the mounting plate 18 away from the adjustment seat 11, and an inspection sealing door 2 is movably connected to the front of the adjustment box 1 through a hinge, and a lock body is fixedly installed at one end of the inspection sealing door 2.
[0032] The technical solution of the present invention is that by setting up the inspection sealing door 2, it is convenient to inspect the electrical equipment inside the regulating box 1, and it is convenient to replace the first activated carbon filter 13 and the second activated carbon filter plate 16, so as to ensure the purification effect of the regulating box 1 on the gas. After the adjusting seat 11 is installed through the mounting plate 18, the position installation of the regulating box 1 can be realized. When the driving motor 12 is turned on by the external remote control to drive the lifting threaded rod 19 to rotate, the moving block 20 can move up and down on the outer surface of the lifting threaded rod 19, and the moving block 20 can drive the regulating box 1 to move synchronously, so as to facilitate the staff to adjust the position height of the regulating box 1, and then it is convenient for the staff of different heights to perform maintenance work on the inside of the regulating box 1.
[0033] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values (e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.
[0034] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A laboratory pressure difference ventilation adjustment device, characterized in that: include: A regulating box (1), wherein an air inlet pipe (3) is arranged at the middle end of the right side of the regulating box (1), a dust filter screen (4) is fixedly connected to the right end of the inner cavity of the air inlet pipe (3), a first activated carbon filter screen (13), an electric heating screen (14) and a second activated carbon filter screen (16) are fixedly installed in the inner cavity of the regulating box (1) from right to left in sequence, a plurality of equally spaced ultraviolet sterilization lamps (15) are fixedly installed at the top of the inner cavity of the regulating box (1), a first temperature sensor (17) is fixedly installed at the upper end of the left side of the inner cavity of the regulating box (1), a pressure regulating fan (9) is fixedly installed at the middle end of the left side of the regulating box (1), an air inlet end of the pressure regulating fan (9) is connected to the left side of the regulating box (1) through a pipeline, an air outlet end of the pressure regulating fan (9) is connected to an air guide pipe (6), and a plurality of equally spaced air supply pipes (5) are arranged at the bottom of the air guide pipe (6); A controller (10), wherein the output end of the controller (10) is electrically connected to a pressure difference sensor (7) and a second temperature sensor (8) through wires, and the input ends of the pressure regulating fan (9), the ultraviolet sterilization lamp (15) and the first temperature sensor (17) are electrically connected to the output end of the controller (10) through wires.
2. A laboratory pressure difference ventilation adjustment device according to claim 1, characterized in that: The controller (10) is fixedly mounted on the upper end of the left side of the regulating box (1), and a microprocessor module is arranged inside the controller (10).
3. A laboratory pressure difference ventilation adjustment device according to claim 1, characterized in that: The air supply pipe (5) is arranged on the top of the laboratory.
4. A laboratory pressure difference ventilation adjustment device according to claim 1, characterized in that: The differential pressure sensor (7) and the second temperature sensor (8) are both arranged on the wall of the laboratory.
5. A laboratory pressure difference ventilation adjustment device according to claim 1, characterized in that: An adjustment seat (11) is arranged at the rear of the adjustment box (1), a driving motor (12) is fixedly mounted on the top of the adjustment seat (11), an output end of the driving motor (12) is fixedly connected to a lifting threaded rod (19), and the lower end of the lifting threaded rod (19) is movably connected to the bottom of the inner cavity of the adjustment seat (11) through a bearing, the outer surface of the lifting threaded rod (19) is threadedly connected to a moving block (20), and the front side of the moving block (20) is fixedly connected to the rear side of the adjustment box (1).
6. A laboratory pressure difference ventilation adjustment device according to claim 5, characterized in that: The left and right sides of the upper and lower ends of the adjustment seat (11) are fixedly connected with mounting plates (18), and a mounting hole is provided at one end of the mounting plate (18) away from the adjustment seat (11).
7. A laboratory pressure difference ventilation adjustment device according to claim 1, characterized in that: The front side of the regulating box (1) is movably connected to a maintenance sealing door (2) via a hinge, and a lock body is fixedly mounted on one end of the maintenance sealing door (2).