A plasma sterilization chamber for a cheese filling process
By designing a plasma sterilization chamber for the cheese filling process, the problem of plasma generator discharge debris falling off was solved, achieving uniform and stable plasma spraying and improving the sterilization effect, thus ensuring the sterilization quality of the cheese.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN SAINA TECH CO LTD
- Filing Date
- 2023-01-31
- Publication Date
- 2026-05-12
AI Technical Summary
During the cheese filling process, debris generated during the discharge of the plasma generator can easily fall into the cheese, causing surface contamination and affecting the sterilization effect.
A plasma sterilization chamber for cheese filling process was designed, including a sterilization chamber body, a plasma generator and a cheese filling production line. The plasma generator is located inside the sterilization chamber and generates plasma by dielectric barrier discharge. Debris is collected by a plasma guide plate and a collection chamber with a specific structural design to ensure uniform and stable plasma spray and prevent debris from falling off.
It achieves uniformity and stability of plasma jetting and improves sterilization effect, reduces debris contamination, and improves sterilization efficiency and effect.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of low-temperature plasma and mainly relates to a plasma sterilization chamber for cheese filling process. Background Technology
[0002] Atmospheric pressure low-temperature plasma surface treatment technology for biomaterials does not require complex vacuum equipment and features low cost, low energy consumption, and high efficiency. The gas temperature during discharge is low (40-80 degrees Celsius), and the treatment process does not damage the surface of the biomaterials. It has important applications in medical device sterilization and food safety. Using atmospheric pressure low-temperature plasma technology for sterilization has significant application value. This sterilization method is low-cost, uses simple equipment, has high sterilization efficiency, and does not produce secondary pollution after treatment. With the development of plasma technology, the structures of plasma generating devices are becoming increasingly diverse. The dielectric material used to generate plasma using dielectric barrier discharge is usually quartz. However, with long-term use of the device, quartz fragments inevitably fall off, causing contamination to the material surface. Summary of the Invention
[0003] The purpose of this invention is to provide a plasma sterilization chamber for cheese filling process. The structural design of this plasma sterilization chamber can effectively solve the problem of debris falling into the cheese during the discharge process of the plasma generator, while improving the sterilization effect within the plasma sterilization chamber.
[0004] The specific technical solution of the present invention is as follows:
[0005] A plasma sterilization chamber for cheese filling process includes a sterilization chamber body, a plasma generator, and a cheese filling production line. The plasma generator is located inside the sterilization chamber body, the cheese filling production line passes through the sterilization chamber body, and the plasma generator is located above the cheese filling production line.
[0006] Preferably, the sterilization chamber body includes a left cavity, a middle cavity, and a right cavity that are interconnected.
[0007] Preferably, a left partition with an elongated hole is provided between the left cavity and the middle cavity, and a right partition with an elongated hole is provided between the middle cavity and the right cavity. The left cavity, the middle cavity, and the right cavity are interconnected through the left partition, the right partition, and the elongated hole on the lower partition of the cavity.
[0008] Preferably, the plasma generator mainly includes a plasma generator protective cover, a discharge module, a discharge module support, an insulating component, a fan, a plasma guide plate, a baffle plate, and a collection chamber. The plasma generator protective cover has an air inlet and an air outlet. The air inlet is located at the top of the plasma generator protective cover (upper surface of the plasma generator protective cover), and the air outlet is located at the bottom of the plasma generator protective cover (lower surface of the plasma generator protective cover). The discharge module, discharge module support, fan, plasma guide plate, baffle plate, and collection chamber are located inside the plasma generator protective cover. The discharge module is located between the fan and the plasma guide plate. The fan is close to the air inlet, and the airflow direction is from the outside to the inside. A discharge module support is located below the discharge module, and a baffle plate is located below the plasma guide plate. Collection chambers are located on both sides of the air outlet. The insulating component is located at the high-voltage line inlet on the front of the plasma generator protective cover. The high-voltage line enters the plasma generator through the insulating component and connects to the discharge module. The other end of the high-voltage line is connected to the power supply.
[0009] Preferably, the plasma guide plate is fixedly connected to the wind deflector.
[0010] Preferably, the discharge module support is installed on the left and right sides inside the plasma generator protective cover.
[0011] Preferably, the structure of the discharge module is based on existing technology in the field and is used to generate plasma. The dielectric material used to generate plasma using dielectric barrier discharge is typically quartz. However, with prolonged use of the device, quartz fragments inevitably fall off, causing contamination of the material surface. For example, the discharge module can be an atmospheric pressure-adjustable discharge area plasma discharge device as described in application number 2022201280334.
[0012] Preferably, the fan is installed inside the protective cover of the plasma generator, close to the air inlet on the upper surface.
[0013] Preferably, the plasma guide plate is symmetrically installed on both sides of the axis above the air outlet on the lower surface; the lower edge of the plasma guide plate is higher than the lower surface of the plasma generator protective cover, and the edge of the plasma guide plate extends beyond the edge of the collection chamber; a baffle plate with an obtuse angle is provided below the plasma guide plate.
[0014] Preferably, the two wings of the plasma guide plate are tilted downwards, and the included angle between the two wings of the plasma guide plate is 0-180 degrees, which is adjustable. The cross-sectional area of the lower surface of the plasma guide plate and the upper edge of the lower collection cavity in the vertical direction is not less than the area of the air inlet on the upper surface of the device.
[0015] More preferably, the included angle between the two wings of the plasma guide plate is 120-180 degrees.
[0016] Preferably, the collection chambers on both sides are symmetrical along the axis.
[0017] Preferably, the collection chamber is provided with a sliding groove, which is slidably connected to the collection chamber. The length of the two collection chambers can be adjusted by the sliding groove structure. The area of the air outlet on the lower surface of the device is not less than the area of the air inlet, that is, the sum of the cross-sectional areas generated between the two collection chambers and the plasma guide plate is greater than or equal to the sum of the cross-sectional areas of the air inlet.
[0018] Preferably, all components in the plasma generator are fixedly connected except for the sliding connection between the slide and the collection chamber.
[0019] Preferably, the plasma generator is installed in the left and right cavities. The air outlets of the plasma generators in the left and right cavities are connected to the elongated holes on the partition, and the airflow flows into the middle cavity from the air outlets. A circulating fan is provided in the left cavity to make the air circulation direction in the left cavity clockwise. A circulating fan is provided in the right cavity to make the air circulation direction in the right cavity counterclockwise.
[0020] Preferably, the plasma generators located in the left cavity are left cavity plasma generator I and left cavity plasma generator II, and the plasma generators located in the right cavity 1 are right cavity plasma generator I and right cavity plasma generator II. Left cavity plasma generator I in the left cavity is located on the left side of the left cavity, with its air inlet facing downwards and its air outlet facing upwards; left cavity plasma generator II is located on the right side of the left cavity, with its air inlet facing left and its air outlet facing right. Right cavity plasma generator I in the right cavity is located on the left side of the right cavity, with its air inlet facing right and its air outlet facing left; right cavity plasma generator II is located on the right side of the right cavity, with its air inlet facing downwards and its air outlet facing upwards. The air outlet of left cavity plasma generator II in the right cavity is connected to an elongated hole on the left partition, and the air outlet of right cavity plasma generator I in the right cavity is connected to an elongated hole on the right partition. The airflow direction is from the air outlet into the middle cavity.
[0021] Preferably, the components of the device, excluding the insulating parts, are made of metals with good corrosion resistance, such as 304 stainless steel or 316 stainless steel.
[0022] Preferably, the insulating element is made of polytetrafluoroethylene.
[0023] The operation of this invention is roughly as follows: A discharge module is placed on a support component inside a plasma generator. A high-voltage line passes through an insulator and is connected to a power source. The ground electrode of the discharge module is connected to a stud inside the plasma generator via a ground wire. The outer shell of the plasma generator is connected to the ground electrode of the power source. Air is drawn in through the air inlet by a fan. The air passes through the plasma generated by the discharge module, sequentially through a plasma guide plate, a collection chamber, and a baffle plate, and is then discharged from the air outlet on the lower surface to kill bacterial samples placed below the plasma generator.
[0024] Compared with the prior art, the present invention has the following advantages:
[0025] (1) The structure between the plasma generator guide plate and the lower surface air outlet is compact. The plasma ejected from the lower surface air outlet is uniform and stable, and the plasma ejection distance is longer and the ejection is more concentrated, with the direction being vertically downward.
[0026] (2) Under the same conditions, using a plasma generator has a better sterilization effect than using a single discharge module.
[0027] (3) An adjustable-angle plasma guide plate is used, which can adjust the speed and maximum distance of plasma jet to a certain extent.
[0028] (4) Collection chambers are provided on both sides, and the debris generated by the discharge module can be collected in the collection chambers.
[0029] (5) The two sides are equipped with collection chambers whose length can be adjusted by the sliding groove structure, which can adjust the relative position of the air outlet and the size of the air outlet. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of the plasma sterilization chamber provided by the present invention;
[0031] Figure 2 A schematic diagram of the plasma generator provided by the present invention;
[0032] Figure 3 A three-dimensional structural schematic diagram of the plasma sterilization chamber provided by the present invention;
[0033] Figure 4 This invention demonstrates the sterilization effect of the plasma generator.
[0034] In the diagram: 11. Left cavity plasma generator I, 12. Left cavity, 13. Left cavity plasma generator II, 14. Left partition, 15. Middle cavity, 16. Right partition, 17. Right cavity plasma generator I, 18. Right cavity, 19. Right cavity plasma generator II, 20. Cheese filling line, 21. Air inlet, 22. Fan, 23. Discharge module, 24. Plasma guide plate, 25. Left collection cavity, 26. Slide, 27. Air outlet, 28. High voltage electrode, 29. Insulating component, 30. Discharge module support component, 41. Left cavity circulating fan I, 42. Left cavity circulating fan II, 43. Right cavity circulating fan I, 44. Right cavity circulating fan II, 45. Lower long strip hole of left cavity, 46. Lower long strip hole of middle cavity, 47. Lower long strip hole of right cavity. Detailed Implementation
[0035] The invention will now be described in detail with reference to the accompanying drawings.
[0036] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0037] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0038] Example 1
[0039] like Figure 1 , 2As shown in Figure 3, a plasma sterilization chamber for cheese filling includes a sterilization chamber body, a plasma generator, and a cheese filling production line 20. The plasma generator is located inside the sterilization chamber body, and the cheese filling production line passes through the sterilization chamber body. The plasma generator is located above the cheese filling production line 20. The sterilization chamber body includes a left cavity 12, a middle cavity 15, and a right cavity 18 that are interconnected. A left partition 14 with an elongated hole is provided between the left cavity 12 and the middle cavity 15. A right partition 16 with an elongated hole is provided between the middle cavity 15 and the right cavity 18. The lower parts of the left cavity 12, the middle cavity 15, and the right cavity 18 are all provided with partitions with elongated holes. The left cavity 12, the middle cavity 15, and the right cavity 18 are interconnected through the elongated holes on the left partition 14 and the right partition 16, as well as the elongated holes 45 on the lower part of the left cavity, 46 on the lower part of the middle cavity, and 47 on the lower part of the cavity partition.
[0040] The plasma generator mainly includes a plasma generator protective cover, a discharge module 23, a discharge module support 30, an insulating component 29, a fan 22, a plasma guide plate 24, a baffle plate 31, and a collection chamber. The discharge module 23, discharge module support 30, fan 22, plasma guide plate 24, baffle plate 31, and collection chamber are located inside the plasma generator protective cover. The discharge module is an atmospheric pressure-adjustable discharge area plasma discharge device as described in application number 2022201280334. The discharge module 23 is located between the fan and the plasma guide plate 24, and is placed on the discharge module support 30 inside the plasma generator protective cover. The insulating component 29 is located at the high-voltage line inlet on the front of the plasma generator protective cover. The high-voltage line passes through the insulating component 29 and is connected to the power supply. The ground electrode of the discharge module is connected to the plasma generator housing via a ground wire, and the plasma generator housing is connected to the power supply ground electrode. The air inlet 21 is located on the upper surface of the plasma generator protective cover, and the air outlet 27 is located on the lower surface of the plasma generator protective cover. The internal plasma guide plate 24 is symmetrical about the left and right sides of the axis, and the plasma guide plate 24 is higher than the lower surface air outlet 27. The two wings of the plasma guide plate 24 are inclined downward at a 150-degree angle. A baffle plate 31 is provided below the plasma guide plate 24. The plasma guide plate 24 and the baffle plate 31 are fixedly connected so that the airflow on both sides hits the baffle plate 31 and flows outward perpendicularly to the air outlet. There are collection chambers on both sides of the air outlet 27 on the lower surface of the plasma generator protective cover. The collection chamber on the left side of the air outlet is called the left collection chamber 25, and the collection chamber on the right side of the air outlet is called the right collection chamber 26. The discharge module support 30 is installed on the left and right sides of the plasma generator protective cover. The fan 22 is installed inside the plasma generator protective cover and is close to the upper surface air inlet. The airflow direction is from the outside to the inside. The collecting chamber is equipped with a sliding groove 26, which is slidably connected to the collecting chamber. The length of the collecting chamber can be adjusted by the structure of the sliding groove 26. The area of the air outlet 27 on the lower surface of the plasma generator is not less than the area of the air inlet 21, that is, the sum of the cross-sectional areas generated between the collecting chamber and the plasma guide plate 24 is greater than or equal to the sum of the cross-sectional areas of the air inlet 21. Air is injected into the air outlet 21 by the fan 22. The air passes through the plasma generated by the discharge module 23 and passes through the plasma guide plate 24, the collecting chamber, and the baffle plate 31 in sequence before being discharged from the air outlet 27 on the lower surface.
[0041] The plasma generators are installed in the left cavity 12 and the right cavity 18. Two plasma generators are installed in the left cavity 12: Left Cavity Plasma Generator I1 and Left Cavity Plasma Generator II3. Two plasma generators are installed in the right cavity 18: Right Cavity Plasma Generator I17 and Right Cavity Plasma Generator II19. In the left cavity, Left Cavity Plasma Generator I1 is located to the left of the left cavity 12, with its air inlet 21 facing downwards and its air outlet 27 facing upwards. Left Cavity Plasma Generator II3 is located to the right of the left cavity 12, with its air inlet 21 facing left and its air outlet 27 facing right. In the right cavity 18, Right Cavity Plasma Generator I17 is located to the left of the right cavity 18, with its air inlet 21 facing right and its air outlet 27 facing left. Right Cavity Plasma Generator II3 is located to the right of the right cavity 18, with its air inlet 21 facing downwards and its air outlet 27 facing upwards. The air outlet 27 of the plasma generator II3 in the left cavity of the right cavity 12 is connected to the elongated hole on the left partition 14, and the air outlet of the plasma generator I17 in the right cavity 18 is connected to the elongated hole on the right partition 16. The airflow direction is from the air outlet 27 into the middle cavity 15. The left cavity 12 is equipped with two circulating fans, namely the left cavity plasma generator I 41 and the left cavity circulating fan II 42. The left cavity circulating fan I 41 is located above the left cavity plasma generator I 11, and the left cavity circulating fan II 42 is located below the left cavity plasma generator II 13, so that the air circulation direction in the left cavity 12 is clockwise. The right cavity 18 is equipped with two circulating fans, namely the right cavity plasma generator I 43 and the right cavity circulating fan II 44. The right cavity circulating fan I 43 is located above the right cavity plasma generator I 17, and the right cavity circulating fan II 44 is located below the right cavity plasma generator II 19, so that the air circulation direction in the right cavity 18 is counterclockwise. The plasma generator inside the left cavity is positioned so that the sterilizing gas flows clockwise; the plasma generator inside the right cavity is positioned so that the sterilizing gas flows counterclockwise; no plasma generator is placed inside the middle cavity. The sterilizing gas in the left and right cavities flows into the middle cavity 15 through the elongated holes between the left and right cavities and the middle cavity 15, and then circulates back to the left and right cavities from the lower connecting area after passing through the middle cavity 15, so as to achieve uniform and efficient sterilization of the production line in the three cavities.
[0042] Figure 4 This demonstrates the sterilization effect of the plasma generator. The sterilization experiment was conducted by taking 10 microliters of plasma with a concentration of 5*10... 7 CFU / ml of Escherichia coli (8099) bacterial suspension was evenly spread on an area of 1 cm². 2The mycelium was placed on a circular steel sheet and incubated at 37°C for 10 minutes until dried to form mycelium tablets. These tablets were then placed on a cheese filling line and treated for 3 minutes. The results showed that, under the same conditions, using a plasma generator resulted in better sterilization than using a discharge module alone.
[0043] Example 2
[0044] like Figure 1 , 2 As shown in Figure 3, a plasma sterilization chamber for cheese filling includes a sterilization chamber body, a plasma generator, and a cheese filling production line 20. The plasma generator is located inside the sterilization chamber body, and the cheese filling production line 20 passes through the sterilization chamber body. The plasma generator is located above the cheese filling production line 20. The sterilization chamber body includes a left cavity 12, a middle cavity 15, and a right cavity 18 that are interconnected. A left partition 14 with an elongated hole is provided between the left cavity 12 and the middle cavity 15. A right partition 16 with an elongated hole is provided between the middle cavity 15 and the right cavity 18. The lower parts of the left cavity 12, the middle cavity 15, and the right cavity 18 are all provided with partitions with elongated holes. The left cavity 12, the middle cavity 15, and the right cavity 18 are interconnected through the elongated holes on the left partition 14 and the right partition 16, as well as the elongated holes 45 on the lower part of the left cavity, 46 on the lower part of the middle cavity, and 47 on the lower part of the cavity partition.
[0045] The plasma generator mainly includes a plasma generator protective cover, a discharge module 23, a discharge module support 30, an insulating component 29, a fan 22, a plasma guide plate 24, a baffle plate 31, and a collection chamber. The discharge module 23, discharge module support 30, fan 22, plasma guide plate 24, baffle plate 31, and collection chamber are located inside the plasma generator protective cover. The discharge module is an atmospheric pressure-adjustable discharge area plasma discharge device as described in application number 2022201280334. The discharge module 23 is located between the fan and the plasma guide plate 24, and is placed on the discharge module support 30 inside the plasma generator protective cover. The insulating component 29 is located at the high-voltage line inlet on the front of the plasma generator protective cover. The high-voltage line passes through the insulating component 29 and is connected to the power supply. The ground electrode of the discharge module is connected to the plasma generator housing via a ground wire, and the plasma generator housing is connected to the power supply ground electrode. The air inlet 21 is located on the upper surface of the plasma generator protective cover, and the air outlet 27 is located on the lower surface of the plasma generator protective cover. The internal plasma guide plate 24 is symmetrical about the left and right sides of the axis, and the plasma guide plate 24 is higher than the lower surface air outlet 27. The two wings of the plasma guide plate 24 are inclined downward at a 120-degree angle. A baffle plate 31 is provided below the plasma guide plate 24. The plasma guide plate 24 and the baffle plate 31 are fixedly connected so that the airflow on both sides hits the baffle plate 31 and flows outward perpendicularly to the air outlet. There are collection chambers on both sides of the air outlet 27 on the lower surface of the plasma generator protective cover. The collection chamber on the left side of the air outlet is called the left collection chamber 25, and the collection chamber on the right side of the air outlet is called the right collection chamber 26. The discharge module support 30 is installed on the left and right sides of the plasma generator protective cover. The fan 22 is installed inside the plasma generator protective cover and is close to the upper surface air inlet. The airflow direction is from the outside to the inside. The collecting chamber is equipped with a sliding groove 26, which is slidably connected to the collecting chamber. The length of the collecting chamber can be adjusted by the structure of the sliding groove 26. The area of the air outlet 27 on the lower surface of the plasma generator is not less than the area of the air inlet 21, that is, the sum of the cross-sectional areas generated between the collecting chamber and the plasma guide plate 24 is greater than or equal to the sum of the cross-sectional areas of the air inlet 21. Air is injected into the air outlet 21 by the fan 22. The air passes through the plasma generated by the discharge module 23 and passes through the plasma guide plate 24, the collecting chamber, and the baffle plate 31 in sequence before being discharged from the air outlet 27 on the lower surface.
[0046] The plasma generators are installed in the left cavity 12 and the right cavity 18. Two plasma generators are installed in the left cavity 12: Left Cavity Plasma Generator I1 and Left Cavity Plasma Generator II3. Two plasma generators are installed in the right cavity 18: Right Cavity Plasma Generator I17 and Right Cavity Plasma Generator II19. In the left cavity, Left Cavity Plasma Generator I1 is located to the left of the left cavity 12, with its air inlet 21 facing downwards and its air outlet 27 facing upwards. Left Cavity Plasma Generator II3 is located to the right of the left cavity 12, with its air inlet 21 facing left and its air outlet 27 facing right. In the right cavity 18, Right Cavity Plasma Generator I17 is located to the left of the right cavity 18, with its air inlet 21 facing right and its air outlet 27 facing left. Right Cavity Plasma Generator II3 is located to the right of the right cavity 18, with its air inlet 21 facing downwards and its air outlet 27 facing upwards. The air outlet 27 of the plasma generator II3 in the left cavity of the right cavity 12 is connected to the elongated hole on the left partition 14, and the air outlet of the plasma generator I17 in the right cavity 18 is connected to the elongated hole on the right partition 16. The airflow direction is from the air outlet 27 into the middle cavity 15. The left cavity 12 is equipped with two circulating fans, namely the left cavity plasma generator I 41 and the left cavity circulating fan II 42. The left cavity circulating fan I 41 is located above the left cavity plasma generator I 11, and the left cavity circulating fan II 42 is located below the left cavity plasma generator II 13, so that the air circulation direction in the left cavity 12 is clockwise. The right cavity 18 is equipped with two circulating fans, namely the right cavity plasma generator I 43 and the right cavity circulating fan II 44. The right cavity circulating fan I 43 is located above the right cavity plasma generator I 17, and the right cavity circulating fan II 44 is located below the right cavity plasma generator II 19, so that the air circulation direction in the right cavity 18 is counterclockwise. The plasma generator inside the left cavity is positioned so that the sterilizing gas flows clockwise; the plasma generator inside the right cavity is positioned so that the sterilizing gas flows counterclockwise; no plasma generator is placed inside the middle cavity. The sterilizing gas in the left and right cavities flows into the middle cavity 15 through the elongated holes between the left and right cavities and the middle cavity 15, and then circulates back to the left and right cavities from the lower connecting area after passing through the middle cavity 15, so as to achieve uniform and efficient sterilization of the production line in the three cavities.
Claims
1. A plasma sterilization chamber for cheese filling process, characterized in that, It includes a sterilization chamber body, a plasma generator, and a cheese filling production line. The plasma generator is located inside the sterilization chamber body, the cheese filling production line passes through the sterilization chamber body, and the plasma generator is located above the cheese filling production line. The plasma generator includes a plasma generator protective cover, a discharge module, a discharge module support, an insulating component, a fan, a plasma guide plate, a baffle plate, and a collection chamber. The plasma generator protective cover has an air inlet and an air outlet. The air inlet is located at the top of the plasma generator protective cover, and the air outlet is located at the bottom of the plasma generator protective cover. The discharge module, discharge module support, fan, plasma guide plate, baffle plate, and collection chamber are located inside the plasma generator protective cover. The discharge module is located between the fan and the plasma guide plate. The fan is close to the air inlet, and the airflow direction is from the outside to the inside. A discharge module support is located below the discharge module, and a baffle plate is located below the plasma guide plate. Collection chambers are located on both sides of the air outlet. The insulating component is located at the high-voltage line inlet on the front of the plasma generator protective cover. The plasma guide plate is symmetrical along both sides of the axis, with the lower edge of the plasma guide plate higher than the lower surface of the plasma generator protective cover, and the edge of the plasma guide plate extending beyond the edge of the collection chamber; a wind baffle plate with an obtuse angle is provided below the plasma guide plate. The plasma guide plate has two wings that are tilted downwards.
2. The plasma sterilization chamber according to claim 1, characterized in that, The sterilization chamber body includes a left cavity, a middle cavity, and a right cavity that are interconnected.
3. The plasma sterilization chamber according to claim 2, characterized in that, A left partition with an elongated hole is provided between the left cavity and the middle cavity, and a right partition with an elongated hole is provided between the middle cavity and the right cavity. The left cavity, the middle cavity, and the right cavity are interconnected through the left partition, the right partition, and the elongated hole on the lower partition of the cavity.
4. The plasma sterilization chamber according to claim 1, characterized in that, The discharge module support is installed on the left and right sides inside the plasma generator protective cover.
5. The plasma sterilization chamber according to claim 2, characterized in that, The plasma generator is installed in the left and right cavities. The air outlets of the plasma generators in the left and right cavities are connected to the elongated holes on the partition, and the airflow flows from the air outlets into the middle cavity. A circulating fan is installed in the left cavity and a circulating fan is installed in the right cavity.
6. The plasma sterilization chamber according to claim 5, characterized in that, The plasma generators located in the left cavity are Left Cavity Plasma Generator I and Left Cavity Plasma Generator II, and the plasma generators located in the right cavity 1 are Right Cavity Plasma Generator I and Right Cavity Plasma Generator II. Left Cavity Plasma Generator I in the left cavity is located on the left side of the left cavity, with its air inlet facing downwards and its air outlet facing upwards. Left Cavity Plasma Generator II in the right cavity is located on the right side of the left cavity, with its air inlet facing left and its air outlet facing right. Right Cavity Plasma Generator I in the right cavity is located on the left side of the right cavity, with its air inlet facing right and its air outlet facing left. Right Cavity Plasma Generator II in the right cavity is located on the right side of the right cavity, with its air inlet facing downwards and its air outlet facing upwards. The air outlet of Left Cavity Plasma Generator II in the right cavity is connected to the elongated hole on the left partition, and the air outlet of Right Cavity Plasma Generator I in the right cavity is connected to the elongated hole on the right partition. The airflow direction is from the air outlet into the middle cavity.
7. The plasma sterilization chamber according to claim 1, characterized in that, The collection chambers on both sides are symmetrical along the axis.
8. The plasma sterilization chamber according to claim 1, characterized in that, The sum of the cross-sectional areas generated between the two collection chambers and the plasma guide plate is greater than or equal to the sum of the cross-sectional areas of the air inlet.
9. The plasma sterilization chamber according to claim 1, characterized in that, The collection chamber is provided with a sliding groove, which is slidably connected to the collection chamber.