A ventilation device for a one hundred thousand level purification workshop

Abstract

The utility model discloses a kind of 100,000-level purification workshop ventilation device, it is related to purification workshop ventilation technical field.The utility model includes air supply component, return air component, filter assembly and control assembly, air supply component air inlet is communicated with external air, air outlet is connected with the input end of filter assembly by air pipe;Filter assembly includes the primary filter, medium filter and high efficiency filter that are sequentially connected;Return air component includes multiple return air units, each return air unit is evenly arranged on the lower part wall of the other side of purification workshop relative air supply component;Control assembly is set in the control box of the inside one side wall of purification workshop, and control assembly is electrically connected with air supply component by connecting cable.The utility model is set to the tertiary series filter mechanism of primary filter, medium filter and high efficiency filter, can intercept particle of different particle size gradually, ensure that the air reaching purification standard that enters the inside of purification workshop.

Description

Technical Field

[0001] This utility model belongs to the field of cleanroom ventilation technology, and in particular relates to a 100,000-class cleanroom ventilation device. Background Technology

[0002] In modern industrial production, biomedicine, electronics manufacturing, food processing and other fields, the requirements for air cleanliness are increasing. As an important facility to ensure product quality and production safety, the performance of the air purification and ventilation system of the cleanroom directly affects the air quality inside the workshop.

[0003] Early purification systems often only had pre- or medium-efficiency filters, lacking efficient end-point filtration methods, making it difficult to meet the air purification requirements of Class 100,000 or even higher standards. Furthermore, while some systems were equipped with high-efficiency filters (such as HEPA filters), they did not form a complete multi-stage series filtration system, resulting in unstable filtration efficiency and easy particle penetration, affecting the control of workshop cleanliness. Traditional ventilation systems commonly suffer from unreasonable layouts of air supply and return vents. For example, air supply vents are often located in the center of the top, while return vents are concentrated on the same side, easily causing airflow short-circuiting or local eddies, creating dead zones in airflow, thus reducing purification efficiency and affecting the uniformity of temperature and humidity distribution. Moreover, many existing ventilation devices still use manual adjustment methods, lacking intelligent feedback adjustment functions for key parameters such as fan speed, air volume, temperature, and humidity, failing to achieve dynamic balance control, resulting in unstable system operation, high energy consumption, complex operation, and high maintenance costs.

[0004] To address these issues, we provide a Class 100,000 cleanroom ventilation system. Utility Model Content

[0005] The purpose of this invention is to provide a ventilation device for a 100,000-class cleanroom. By improving the filtration structure and ventilation system layout, it solves the problems of poor filtration effect and poor gas flow in existing cleanroom ventilation systems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a ventilation device for a Class 100,000 cleanroom, comprising an air supply component, a return air component, a filter component, and a control component. The air supply component is installed on one side of the top wall of the cleanroom, with its air inlet communicating with the outside air and its air outlet connected to the input end of the filter component via a duct. The filter component is located near the top of the cleanroom and includes a pre-filter, a medium-efficiency filter, and a high-efficiency filter arranged in series. The return air component includes multiple return air units, which are evenly distributed on the lower wall of the cleanroom opposite the air supply component. The control component is located in a control box on one side of the cleanroom interior and is electrically connected to the air supply component via connecting cables.

[0008] The present invention is further configured such that the air supply assembly includes a fan, an air supply box, and a guide plate disposed inside the air supply box, wherein the fan is fixedly installed at the inlet end of the air supply box, and the guide plate is located at the outlet end of the air supply box.

[0009] The present invention is further configured such that the return air unit includes a return air grille and a return air duct, the return air grille is embedded in the lower part of the cleanroom wall, one end of the return air duct is connected to the return air grille, and the other end extends to the outside of the cleanroom wall.

[0010] The present invention is further configured such that the filter media of the pre-filter is a metal mesh or porous fiber material, the medium-efficiency filter adopts a bag or plate structure, the high-efficiency filter is made of HEPA filter paper, and the pre-filter, medium-efficiency filter and high-efficiency filter are all sealed to the inner wall of the housing of the filter assembly.

[0011] The present invention is further configured such that the control component includes a PLC controller, a pressure sensor, a temperature and humidity sensor, and a human-machine interface, wherein the PLC controller is signal-connected to the pressure sensor and the temperature and humidity sensor, and the pressure sensor and the temperature and humidity sensor are embedded in the air outlet of the filter component.

[0012] The present invention is further configured such that the human-machine interface is located on the front panel of the control box, and the human-machine interface is equipped with control buttons.

[0013] The present invention is further configured such that the air supply component, the return air component, and the filter component constitute a filtration and ventilation system for a Class 100,000 cleanroom.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model, through the setting of a three-stage series filtration mechanism consisting of a pre-filter, a medium-efficiency filter and a high-efficiency filter, can intercept particles of different sizes at each stage, ensuring that the air entering the cleanroom meets the purification standards. This not only improves the cleanliness of the air, but also extends the service life of each filter and reduces maintenance costs.

[0016] 2. The air supply component of this utility model is located on one side of the top of the cleanroom, while the return air component is located on the opposite lower side. This layout ensures that the airflow in the cleanroom is more uniform, reduces dead zones or eddies, and effectively improves the overall air quality and circulation efficiency in the cleanroom. Furthermore, the control component integrates a PLC controller, pressure sensor, temperature and humidity sensor, and human-machine interface, enabling real-time monitoring and automatic adjustment of key parameters such as air supply volume, temperature, and humidity. This intelligent management method not only improves the system's response speed and control accuracy but also simplifies the operation process, making the entire cleanroom system easier to manage and maintain.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram showing the location of the return air component in a Class 100,000 cleanroom ventilation system.

[0020] Figure 2 This is a schematic diagram showing the location of the air supply components in a Class 100,000 cleanroom ventilation system.

[0021] Figure 3 This is a schematic diagram of the air supply component structure of a ventilation device for a Class 100,000 cleanroom.

[0022] Figure 4 This is a schematic diagram of the internal structure of the air supply box of a 100,000-class cleanroom ventilation device.

[0023] Figure 5 This is a schematic diagram showing the installation location of the fan in a ventilation system for a Class 100,000 cleanroom.

[0024] Figure 6 This is a schematic cross-sectional view of the filter component structure of a ventilation device for a Class 100,000 cleanroom.

[0025] Figure 7 This is a block diagram illustrating the control components of a ventilation system for a Class 100,000 cleanroom.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Air supply assembly, 11-Air duct, 12-Fan, 13-Air supply housing, 14-Baffle plate, 2-Return air assembly, 21-Return air unit, 211-Return air grille, 212-Return air duct, 3-Filter assembly, 31-Housing, 32-Primary filter, 33-Medium efficiency filter, 34-High efficiency filter, 4-Control assembly, 41-PLC controller, 42-Pressure sensor, 43-Temperature and humidity sensor, 44-Human machine interface, 45-Control buttons, 5-Cleanroom. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example

[0030] Please see Figure 1-7 This utility model relates to a ventilation device for a Class 100,000 cleanroom, comprising an air supply assembly 1, a return air assembly 2, a filter assembly 3, and a control assembly 4. The air supply assembly 1 is installed on the top wall of the cleanroom 5, with its air inlet communicating with the outside air and its air outlet connected to the input end of the filter assembly 3 via a duct 11. The filter assembly 3 is located near the top of the cleanroom 5 and includes a pre-filter 32, a medium-efficiency filter 33, and a high-efficiency filter 34 arranged in series. The return air assembly 2 includes multiple return air units 21, which are evenly distributed throughout the cleanroom. The control component 4 is located on the lower side of the wall opposite to the air supply component 1 in the cleanroom 5. The control component 4 is located in the control box on one side wall inside the cleanroom 5 and is electrically connected to the air supply component 1 via a connecting cable. The fan 12 is used to draw in outside air. The air supply box 13 serves as the main body of the air supply channel. The airflow direction is guided by the guide plate 14. The guide plate 14 is used to adjust the airflow distribution, avoid the formation of eddies or dead corners, and improve the air supply efficiency. The air delivered is purified by the three-stage series filtration mechanism of the filter component 3 before entering the cleanroom 5 and is discharged through multiple return air units 21 in the return air component 2.

[0031] Specifically, the air supply assembly 1 includes a fan 12, an air supply box 13, and a guide plate 14 disposed within the air supply box 13. The fan 12 is fixedly installed at the inlet end of the air supply box 13, and the guide plate 14 is located at the outlet end of the air supply box 13. The return air unit 21 includes a return air grille 211 and a return air duct 212. The return air grille 211 is embedded in the lower part of the wall of the cleanroom 5. One end of the return air duct 212 is connected to the return air grille 211, and the other end extends to the outside of the wall of the cleanroom 5. The air supply assembly 1 is used to exhaust used air from the cleanroom. It is evenly distributed at multiple points to ensure that there are no dead corners in the air flow and improve the air circulation quality in the cleanroom.

[0032] The primary filter 32 is made of metal mesh or porous fiber material, the secondary filter 33 is a bag or plate structure, and the high-efficiency filter 34 is made of HEPA filter paper. The primary filter 32, secondary filter 33 and high-efficiency filter 34 are all sealed to the inner wall of the housing 31 of the filter assembly 3, using a three-stage series filtration mechanism to intercept particles of different sizes step by step.

[0033] Furthermore, the control component 4 includes a PLC controller 41, a pressure sensor 42, a temperature and humidity sensor 43, and a human-machine interface 44. The PLC controller 41 is signal-connected to the pressure sensor 42 and the temperature and humidity sensor 43, which are embedded in the air outlet of the filter component 3. The human-machine interface 44 is located on the front panel of the control box and is equipped with control buttons 45. Environmental data is collected through the pressure sensor 42 and the temperature and humidity sensor 43. The pressure sensor 42 detects the air outlet pressure, and the temperature and humidity sensor 43 monitors the air temperature and humidity. The PLC controller 41 compares the set value with the actual value and adjusts the fan speed 12 or other actuators to achieve closed-loop control, automatically adjusting key parameters such as air volume, temperature, and humidity. The operation panel composed of the human-machine interface 44 and the control buttons 45 is used for parameter setting and monitoring.

[0034] The operation process of this embodiment is as follows: The air supply component 1, the return air component 2, and the filter component 3 constitute the filtration and ventilation system of the Class 100,000 cleanroom. In specific use, the Class 100,000 cleanroom ventilation device first sets the required operating parameters through the human-machine interface 44 of the control component 4, including the air supply volume, temperature and humidity range, and the operating frequency of the fan 12. The PLC controller 41 will automatically control according to these set values. Then, the air supply component 1 is started, and the fan 12 starts to run, drawing in air from the outside and sending it into the air supply box 13. Inside the air supply box 13, the guide plate 14 effectively guides the airflow direction to avoid the generation of eddies or dead air supply angles, thereby improving the air supply efficiency. The air after preliminary rectification is delivered to the filter component 3 through the air duct 11.

[0035] After entering the filter assembly 3, the air passes through a three-stage filtration mechanism consisting of a pre-filter 32, a medium-efficiency filter 33, and a high-efficiency filter 34. The pre-filter 32 uses a metal mesh or porous fiber material to intercept larger particles; the medium-efficiency filter 33 further filters medium-sized particles, and its bag or plate structure improves filtration capacity and efficiency; finally, the high-efficiency filter 34 uses HEPA filter paper, which can effectively intercept fine particles and ensure that the air meets the 100,000-level purification standard. The clean air after three-stage filtration is sent into the cleanroom 5 to maintain the air quality in the cleanroom.

[0036] Meanwhile, multiple return air units 21 in the return air assembly 2 are evenly distributed at the lower part of the other side wall of the cleanroom 5 to exhaust the used air in the workshop. Each return air unit 21 consists of a return air grille 211 embedded in the wall and a return air duct 212 connected to the outside, ensuring that the air circulation is free of dead corners and improving the overall air circulation quality.

[0037] During system operation, control component 4 continuously monitors environmental parameters. Pressure sensor 42 and temperature and humidity sensor 43 collect air pressure and temperature and humidity data at the air outlet of filter component 3 in real time and feed this information back to PLC controller 41. PLC controller 41 automatically adjusts the speed of fan 12 or other actuators based on the difference between the actual detected value and the set value to achieve closed-loop control of key parameters such as air volume, temperature and humidity, ensuring that cleanroom 5 is always in a stable and efficient operating state. At the same time, users can use human-machine interface 44 in conjunction with control buttons 45 to perform parameter adjustment, status viewing and fault alarm operations, realizing convenient human-machine interaction and system management.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A ventilation device for a Class 100,000 cleanroom, comprising an air supply assembly (1), a return air assembly (2), a filter assembly (3), and a control assembly (4), characterized in that: The air supply assembly (1) is installed on the top wall of the cleanroom (5), with its air inlet connected to the outside air and its air outlet connected to the input end of the filter assembly (3) through the air duct (11). The filter assembly (3) is located near the top of the cleanroom (5) and includes a pre-filter (32), a medium-efficiency filter (33), and a high-efficiency filter (34) arranged in series. The return air assembly (2) includes multiple return air units (21), which are evenly arranged on the lower wall of the cleanroom (5) opposite to the air supply assembly (1). The control assembly (4) is located in a control box on one side wall inside the cleanroom (5) and is electrically connected to the air supply assembly (1) through a connecting cable.

2. The ventilation device for a Class 100,000 cleanroom according to claim 1, characterized in that, The air supply assembly (1) includes a fan (12), an air supply box (13), and a guide plate (14) disposed in the air supply box (13). The fan (12) is fixedly installed at the inlet end of the air supply box (13), and the guide plate (14) is located at the outlet end of the air supply box (13).

3. The ventilation device for a 100,000-class cleanroom according to claim 1, characterized in that, The return air unit (21) includes a return air grille (211) and a return air duct (212). The return air grille (211) is embedded in the lower part of the wall of the cleanroom (5). One end of the return air duct (212) is connected to the return air grille (211), and the other end extends to the outside of the wall of the cleanroom (5).

4. The ventilation device for a 100,000-class cleanroom according to claim 1, characterized in that, The primary filter (32) is made of metal mesh or porous fiber material, the secondary filter (33) is made of bag or plate structure, the high efficiency filter (34) is made of HEPA filter paper, and the primary filter (32), secondary filter (33) and high efficiency filter (34) are all sealed to the inner wall of the outer shell (31) of the filter assembly (3).

5. The ventilation device for a 100,000-class cleanroom according to claim 1, characterized in that, The control component (4) includes a PLC controller (41), a pressure sensor (42), a temperature and humidity sensor (43), and a human-machine interface (44). The PLC controller (41) is connected to the pressure sensor (42) and the temperature and humidity sensor (43) via signals. The pressure sensor (42) and the temperature and humidity sensor (43) are embedded in the air outlet of the filter component (3).

6. The ventilation device for a Class 100,000 cleanroom according to claim 5, characterized in that, The human-machine interface (44) is located on the front panel of the control box, and the human-machine interface (44) is equipped with control buttons (45).

7. The ventilation device for a Class 100,000 cleanroom according to claim 1, characterized in that, The air supply component (1), return air component (2), and filter component (3) constitute the filtration and ventilation system of a Class 100,000 cleanroom.

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