Air heating device for a laminar flow clean bench

Abstract

The application discloses an air heating device for a laminar flow clean cabinet, relates to the field of gas heating, and comprises an FFU fan, a high-efficiency filter, an electric heating mechanism and a static pressure buffer tank which are arranged at the left side of the bottom of the cabinet body, the high-efficiency filter is located at the air outlet side of the FFU fan, the electric heating mechanism comprises an electric heating element and a mounting assembly, the electric heating element is an electric heating pipe, the electric heating pipe is arranged at the bottom of the cabinet body, and the electric heating pipe is located at the right side of the high-efficiency filter. The application absorbs external gas through the FFU fan, the external gas enters through the air inlet, the external gas is filtered through the high-efficiency filter at this time, and the particle impurities are removed, the gas is heated through the electric heating pipe, the temperature and humidity of the gas are ensured, then the static pressure buffer tank is used to realize the stable air flow pressure, eliminate the pressure fluctuation, and the efficiency of the overall heating can be improved, and the static pressure buffer tank can further improve the sufficient and uniform heating of the gas and improve the heating efficiency.

Description

Technical Field

[0001] This application relates to the field of gas heating, and more particularly to an air heating device for laminar flow cleanrooms. Background Technology

[0002] Laminar flow cleanrooms (such as biosafety cabinets) primarily utilize high-efficiency filtration and airflow control technology to provide a sterile and clean environment for laboratory or medical procedures. They are mainly used in fields such as microbiological processing, drug development, and clinical testing. Their core principle is to use high-efficiency filters to create a uniform unidirectional airflow (vertical or horizontal), using a "piston flow" effect to directionally remove contaminants, thereby maintaining the cleanliness of the work area. To reduce the risk of bacterial growth, maintain the operating room temperature and humidity within a suitable range, and ensure the stability and safety of medical operations, existing laminar flow clean cabinets require internal air heating. However, current methods typically use electric heating elements. Due to the poor sealing between the existing cabinet and the electric heating elements, an air heating device for laminar flow clean cabinets is needed. Utility Model Content

[0003] To improve overall heating efficiency, this application provides an air heating device for laminar flow cleanrooms.

[0004] The air heating device for a laminar flow clean cabinet provided in this application adopts the following technical solution: An air heating device for a laminar flow clean cabinet includes an FFU fan, a high-efficiency filter, an electric heating mechanism, and a static pressure buffer box, which are arranged on the left side of the bottom of the cabinet. The high-efficiency filter is located on the air outlet side of the FFU fan, and the electric heating mechanism includes an electric heating element and an installation assembly. The electric heating element is an electric heating tube, which is located at the bottom of the cabinet and to the right of the high-efficiency filter. The FFU fan, high-efficiency filter, electric heating tube, and static pressure buffer box are arranged in sequence from left to right.

[0005] By adopting the above technical solution, external gas is absorbed by the FFU fan and enters through the air inlet. The external gas is then filtered by a high-efficiency filter to remove particulate impurities. The gas is then heated by an electric heating element to ensure the temperature and humidity of the gas. The static pressure buffer box then stabilizes the airflow pressure and eliminates pressure fluctuations, thereby improving the overall heating efficiency. The rear static pressure buffer box further improves the full and uniform heating of the gas, increasing the heating efficiency. The gas then moves upward and passes through multiple laminar flow plates before finally being discharged through the exhaust port.

[0006] Preferably, the electric heating element is vertically arranged.

[0007] By adopting the above technical solution, the electric heating element is installed vertically, which facilitates installation and use.

[0008] Preferably, the static pressure buffer box is located on one side of the exhaust port of the electric heating tube and is installed through the cabinet.

[0009] By adopting the above technical solution, the static pressure buffer box is located on one side of the exhaust port of the electric heating tube and is installed through the cabinet, thus enabling connection and use.

[0010] Preferably, the installation assembly includes a positioning seat fixedly installed at the bottom of the cabinet. A partition plate is fixedly installed on the side of the positioning seat near the high-efficiency filter. A through hole is opened on one side of the partition plate for the high-efficiency filter and the gas delivery pipe of the electric heating tube to pass through. A positioning groove is opened on the positioning seat. A positioning block is slidably installed in the positioning groove. The positioning block is fixedly installed to the bottom of the electric heating tube. Two connecting rods are symmetrically fixedly installed on one side of the positioning block. The same sealing plate is fixedly installed on one side of the two connecting rods.

[0011] By adopting the above technical solution, a partition plate is set on one side of the electric heating tube and sealed to the cabinet, which can prevent the leakage of heated gas. This improves heating efficiency, and the through holes on the partition plate facilitate the connection and installation of the high-efficiency filter with the air inlet and outlet of the electric heating tube.

[0012] By adopting the above technical solution, the airflow pressure is stabilized through the static pressure buffer box, eliminating pressure fluctuations, thereby improving the overall heating efficiency. The rear static pressure buffer box can further improve the full and uniform heating of the gas, thus improving the heating efficiency.

[0013] Preferably, an opening is provided on one side of the cabinet, and the sealing plate is located inside the opening. The size of the sealing plate and the opening are matched, and the width and length of the opening are both greater than the width and length of the electric heating tube.

[0014] By adopting the above technical solution and setting openings, an auxiliary installation function can be achieved.

[0015] Preferably, a groove is provided on one side of the cabinet, and a sealing gasket is provided in the groove, which is fixedly sleeved on the sealing plate.

[0016] By adopting the above technical solution, a groove can be set so that the sealing gasket can be installed inside, thereby achieving a sealing effect.

[0017] Preferably, a housing is fixedly installed on one side of the cabinet, a screw is rotatably installed inside the housing, a sliding plate is screwed onto the screw, a synchronization frame is fixedly installed on one side of the sliding plate, and a clamping plate is fixedly installed on the synchronization frame.

[0018] By adopting the above technical solution, pulling the external handle moves the sealing plate, connecting rod and positioning block, and moves the electric heating tube to the outside through the positioning block, which facilitates the maintenance or replacement of its internal components. Therefore, it can further improve the convenience and flexibility of use.

[0019] Preferably, the clamping plate and the electric heating tube are clamped together, the side of the housing near the sliding plate is open, and the sliding plate is located inside.

[0020] By adopting the above technical solution, the clamping plate can play an auxiliary role in clamping and limiting.

[0021] Preferably, a servo motor is fixedly installed on one side of the outer wall of the cabinet, and the output end of the servo motor passes through one side of the cabinet and the shell and is fixedly installed with one end of the screw.

[0022] By adopting the above technical solution, the servo motor is started and controlled. The output of the servo motor drives the screw to rotate. The rotation of the screw drives the sliding plate to move. The movement of the sliding plate drives the synchronous frame and the clamping plate to move to one side and releases the contact positioning with the electric heating tube.

[0023] Preferably, the air inlet and exhaust outlet of the electric heating tube are arranged symmetrically at the top and bottom.

[0024] By adopting the above technical solution, the air inlet and exhaust outlet of the electric heating tube are symmetrically arranged vertically, which facilitates connection, installation and use.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application employs a partition plate and other components to absorb external gas through an FFU fan. The external gas enters through the air inlet and is filtered by a high-efficiency filter to remove particulate impurities. The gas is then heated by an electric heating element to ensure the temperature and humidity of the gas. Furthermore, a static pressure buffer box is used to stabilize the airflow pressure and eliminate pressure fluctuations, thereby improving the overall heating efficiency. The rear static pressure buffer box further enhances the full and uniform heating of the gas, thus improving the heating efficiency.

[0026] 2. This application employs a sealing plate and other components. By controlling the start of a servo motor, the output of the servo motor drives the screw to rotate. The rotation of the screw drives the sliding plate to move. The movement of the sliding plate drives the synchronous frame and clamping plate to move to one side, releasing their contact with the electric heating tube. At this time, the external handle can be pulled. The movement of the handle drives the sealing plate, connecting rod, and positioning block to move as well. The positioning block moves the electric heating tube to the outside, facilitating the maintenance or replacement of its internal components. Therefore, it can further improve the convenience and flexibility of use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an air heating device for a laminar flow clean cabinet according to an embodiment of this application; Figure 2 This is a schematic diagram illustrating the main side structure of the cabinet in the embodiments of this application; Figure 3 This is a partial unfolded schematic diagram illustrating the internal structure of the cabinet, which is the main feature of this application embodiment. Figure 4 This is a schematic diagram illustrating the heating structure, which is a key feature of the embodiments of this application. Figure 5 This is a schematic diagram illustrating the internal structure of the cabinet, representing a key embodiment of this application. Reference numerals: 1. Cabinet; 8. Opening; 9. Sealing plate; 11. Groove; 12. Sealing gasket; 13. Partition plate; 14. Through hole; 15. Electric heating element; 16. FFU fan; 17. High-efficiency filter; 18. Static pressure buffer box; 19. Shell; 20. Sliding plate; 21. Servo motor; 22. Positioning seat; 23. Positioning groove; 24. Positioning block; 25. Clamping plate; 26. Synchronizing frame; 27. Connecting rod; 28. Screw. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0029] This application discloses an air heating device for laminar flow cleanrooms.

[0030] Reference Figure 1-3 An air heating device for a laminar flow clean cabinet includes an FFU fan 16, a high-efficiency filter 17, an electric heating mechanism, and a static pressure buffer box 18, which are disposed on the bottom left side of the cabinet body 1. The high-efficiency filter 17 is located on the air outlet side of the FFU fan 16, and the electric heating mechanism includes an electric heating element and an installation assembly. The electric heating element is an electric heating tube 15, which is located at the bottom of the cabinet 1. The electric heating tube 15 is located to the right of the high-efficiency filter 17. The FFU fan 16, high-efficiency filter 17, electric heating tube 15 and static pressure buffer box 18 are arranged from left to right. The electric heating tube 15 is vertically installed. The static pressure buffer box 18 is located on one side of the exhaust port of the electric heating tube 15 and is installed through the cabinet 1.

[0031] The laminar flow clean cabinet used in this application and its internal structure installation method are both based on conventional technical methods, so they are not described in detail. The installation components include a positioning seat 22 fixedly installed at the bottom of the cabinet 1. A partition plate 13 is fixedly installed on the side of the positioning seat 22 near the high-efficiency filter 17. A through hole 14 is opened on one side of the partition plate 13 for the gas delivery pipe of the high-efficiency filter 17 and the electric heating tube 15 to pass through. A positioning groove 23 is opened on the positioning seat 22. A positioning block 24 is slidably installed in the positioning groove 23. The positioning block 24 is fixedly installed at the bottom of the electric heating tube 15. Two connecting rods 27 are symmetrically fixedly installed on one side of the positioning block 24. The same sealing plate 9 is fixedly installed on one side of the two connecting rods 27.

[0032] In use, external gas is absorbed by the FFU fan 16 and enters through the air inlet. The external gas is then filtered by the high-efficiency filter 17 to remove particulate impurities. The gas is then heated by the electric heating tube 15 to ensure the temperature and humidity of the gas. The static pressure buffer box 18 then stabilizes the airflow pressure and eliminates pressure fluctuations, thereby improving the overall heating efficiency. The rear static pressure buffer box 18 further improves the full and uniform heating of the gas and increases the heating efficiency. The gas then moves upward and passes through multiple laminar flow plates 7 before finally being discharged through the exhaust port. The partition plate 13 is set on one side of the electric heating tube 15 and is sealed to the cabinet 1 to prevent the leakage of heated gas. This improves heating efficiency. The through hole 14 on the partition plate 13 facilitates the connection and installation of the high-efficiency filter 17 with the air inlet and outlet of the electric heating tube 15. The groove 11 and the sealing gasket 12 facilitate easy movement and disassembly while also providing a seal, thus reducing heat loss.

[0033] Reference Figure 3-5 The cabinet 1 includes an opening 8 on one side, a sealing plate 9 inside the opening 8, and the sealing plate 9 and the opening 8 are matched in size. The width and length of the opening 8 are both greater than the width and length of the electric heating tube 15. A groove 11 is provided on one side of the cabinet 1, and a sealing gasket 12 is provided in the groove 11. The sealing gasket 12 is fixedly fitted on the sealing plate 9. The cabinet 1 has a housing 19 fixedly installed on one side. A screw 28 is rotatably installed inside the housing 19. A sliding plate 20 is screwed onto the screw 28. A synchronization frame 26 is fixedly installed on one side of the sliding plate 20. A clamping plate 25 is fixedly installed on the synchronization frame 26. The clamping plate 25 and the electric heating tube 15 are clamped together. The side of the housing 19 near the sliding plate 20 is open. The sliding plate 20 is located inside. A servo motor 21 is fixedly installed on the outer wall of one side of the cabinet 1. The output end of the servo motor 21 passes through one side of the cabinet 1 and the housing 19 and is fixedly installed with one end of the screw 28. The air inlet and exhaust port of the electric heating tube 15 are arranged symmetrically from top to bottom.

[0034] In use, by controlling the start of the servo motor 21, the output of the servo motor 21 will drive the screw 28 to rotate. The rotation of the screw 28 will drive the sliding plate 20 to move. The movement of the sliding plate 20 will drive the synchronous frame 26 and the clamping plate 25 to move to one side and release the contact positioning with the electric heating tube 15. At this time, the external handle can be pulled. The movement of the handle will also drive the sealing plate 9, the connecting rod 27 and the positioning block 24 to move. The electric heating tube 15 will be moved to the outside through the positioning block 24, which will facilitate the maintenance or replacement of its internal components. Therefore, the convenience and flexibility of use can be further improved.

[0035] The electric heating element 15, FFU fan 16, high-efficiency filter 17 and servo motor 21 described in this application are all existing products in the art. Therefore, the specific models and power cord installation and usage process are not described in detail. Furthermore, this application does not limit the specific models of the above-mentioned equipment. The electric heating element 15 is a vertical model, and it can be selected and used according to the specific needs of use. In this application, the servo motor 21 is used for electric drive. Furthermore, this application can also be used for manual drive, and this application does not limit the drive method.

[0036] The implementation principle of an air heating device for a laminar flow clean cabinet according to an embodiment of this application is as follows: During use, external gas is absorbed by the FFU fan 16 and enters through the air inlet. At this time, the external gas is filtered by the high-efficiency filter 17 to remove particulate impurities. Then, the gas is heated by the electric heating tube 15 to ensure the temperature and humidity of the gas. Then, the airflow pressure is stabilized by the static pressure buffer box 18 to eliminate pressure fluctuations, thereby improving the overall heating efficiency. The rear static pressure buffer box 18 can further improve the full and uniform heating of the gas and improve the heating efficiency. At this time, the gas moves upward and passes through multiple laminar flow plates 7, and finally is discharged through the exhaust port. The partition plate 13 is set on one side of the electric heating tube 15 and is sealed to the cabinet 1 to prevent the leakage of heated gas. This improves heating efficiency. The through hole 14 on the partition plate 13 facilitates the connection and installation of the high-efficiency filter 17 with the air inlet and outlet of the electric heating tube 15. The groove 11 and the sealing gasket 12 facilitate easy movement and disassembly while also providing a seal, thus reducing heat loss. When the electric heating element 15 needs to be disassembled and maintained, the servo motor 21 is started by controlling it. The output of the servo motor 21 will drive the screw 28 to rotate. The rotation of the screw 28 will drive the sliding plate 20 to move. The movement of the sliding plate 20 will drive the synchronous frame 26 and the clamping plate 25 to move to one side and release their contact with the electric heating element 15. At this time, the external handle can be pulled. The movement of the handle will also drive the sealing plate 9, the connecting rod 27 and the positioning block 24 to move. The electric heating element 15 will be moved to the outside through the positioning block 24, which will facilitate the maintenance or replacement of its internal components. Therefore, the convenience and flexibility of use can be further improved.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An air heating device for a laminar flow cleanroom, characterized in that: It includes an FFU fan (16), a high-efficiency filter (17), an electric heating mechanism and a static pressure buffer box (18) located on the left side of the bottom of the cabinet (1). The high-efficiency filter (17) is located on the side of the air outlet of the FFU fan (16). The electric heating mechanism includes an electric heating element and an installation assembly. The electric heating element is an electric heating tube (15), which is located at the bottom of the cabinet (1). The electric heating tube (15) is located to the right of the high-efficiency filter (17). The FFU fan (16), high-efficiency filter (17), electric heating tube (15) and static pressure buffer box (18) are arranged in order from left to right.

2. An air heating device for a laminar flow cleanroom according to claim 1, characterized in that: The electric heating element (15) is installed vertically.

3. An air heating device for a laminar flow cleanroom according to claim 1, characterized in that: The static pressure buffer box (18) is located on one side of the exhaust port of the electric heating tube (15) and is installed through the cabinet (1).

4. An air heating device for a laminar flow cleanroom according to claim 1, characterized in that: The installation assembly includes a positioning seat (22) fixedly installed at the bottom of the cabinet (1). A partition plate (13) is fixedly installed on the side of the positioning seat (22) near the high-efficiency filter (17). A through hole (14) is opened on one side of the partition plate (13) for the high-efficiency filter (17) and the gas delivery pipe of the electric heating tube (15) to pass through. A positioning groove (23) is opened on the positioning seat (22). A positioning block (24) is slidably installed in the positioning groove (23). The positioning block (24) is fixedly installed at the bottom of the electric heating tube (15). Two connecting rods (27) are symmetrically fixedly installed on one side of the positioning block (24). The same sealing plate (9) is fixedly installed on one side of the two connecting rods (27).

5. An air heating device for a laminar flow cleanroom according to claim 4, characterized in that: An opening (8) is provided on one side of the cabinet (1), and the sealing plate (9) is located inside the opening (8). The size of the sealing plate (9) and the opening (8) are matched. The width and length of the opening (8) are both greater than the width and length of the electric heating tube (15).

6. An air heating device for a laminar flow cleanroom according to claim 5, characterized in that: A groove (11) is provided on one side of the cabinet (1), and a sealing gasket (12) is provided in the groove (11). The sealing gasket (12) is fixedly sleeved on the sealing plate (9).

7. An air heating device for a laminar flow cleanroom according to claim 1, characterized in that: A housing (19) is fixedly installed on one side of the cabinet (1). A screw (28) is rotatably installed inside the housing (19). A sliding plate (20) is screwed onto the screw (28). A synchronous frame (26) is fixedly installed on one side of the sliding plate (20). A clamping plate (25) is fixedly installed on the synchronous frame (26).

8. An air heating device for a laminar flow cleanroom according to claim 7, characterized in that: The clamping plate (25) and the electric heating tube (15) are clamped together, and the side of the housing (19) near the sliding plate (20) is open, with the sliding plate (20) inside.

9. An air heating device for a laminar flow cleanroom according to claim 8, characterized in that: A servo motor (21) is fixedly installed on one side of the outer wall of the cabinet (1). The output end of the servo motor (21) passes through one side of the cabinet (1) and the shell (19) and is fixedly installed with one end of the screw (28).

10. An air heating device for a laminar flow cleanroom according to claim 1, characterized in that: The air inlet and exhaust outlet of the electric heating tube (15) are arranged symmetrically at the top and bottom.

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