CN113841735A - Normal-pressure air water mist plasma sterilization device and method for cheese sterilization - Google Patents
Normal-pressure air water mist plasma sterilization device and method for cheese sterilization Download PDFInfo
- Publication number
- CN113841735A CN113841735A CN202111076306.1A CN202111076306A CN113841735A CN 113841735 A CN113841735 A CN 113841735A CN 202111076306 A CN202111076306 A CN 202111076306A CN 113841735 A CN113841735 A CN 113841735A
- Authority
- CN
- China
- Prior art keywords
- cheese
- mist
- reactor
- cavity
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C7/00—Other dairy technology
- A23C7/04—Removing unwanted substances other than lactose or milk proteins from milk
Abstract
The invention provides a normal-pressure air water mist plasma sterilization device and method for cheese sterilization, wherein the device comprises a shell and an atomizer, wherein a cheese cavity arranged in the shell is used for accommodating and installing a reactor, a fan and a cheese processing part; the atomizer is used for generating mist and introducing the mist into the cheese cavity to form air water mist; the reactor is a modular reactor with high-voltage electrodes and ground electrodes arranged in an intercrossed array; the fans are provided with a plurality of fans to form circulating wind power, so that air water mist in the cheese cavity is circulated and is discharged through the reactor for multiple times to generate plasma, the generated plasma is fully filled in the whole cheese cavity through free diffusion and the circulating wind power formed by the fans, and the sterilization without dead angles in the cheese cavity is realized. According to the invention, air water mist discharge is used, so that the phenomenon that the traditional atomizer causes outside air to enter the cheese cavity to replace the air in the cheese cavity is reduced, the residence time of mist in the cheese cavity is prolonged, the discharge efficiency of mist is improved, and the overall sterilization efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of plasma sterilization, in particular to a normal-pressure air water mist plasma sterilization device and method for cheese sterilization.
Background
With the continuous innovation of the society development and the continuous emergence of various discharge modes, the plasma technology is applied to various industries. The plasma technology is applied in the field of food sterilization, the traditional sterilization methods have the defects, the residual food after sterilization or the unclean cleaning is easy to cause related diseases, and the living needs of people cannot be met, so that the plasma technology enters the visual field of researchers, and the advantages of the plasma sterilization technology are as follows: low temperature, high efficiency, green, safe and no residue. The cheese sterilization belongs to food grade sterilization, and the safety of the food grade sterilization is a public safety concern, so that the development of an efficient, safe and residue-free sterilization method is very important, and the purpose of safety and residue-free can be realized by sterilizing the cheese cavity by using plasma generated by air water mist discharge, so that the cheese sterilization method has very important use value.
Disclosure of Invention
According to the traditional sterilization method, related diseases are easily caused due to residues or incomplete cleaning after food sterilization, and the technical problem that the current living needs of people cannot be met is solved, so that the normal-pressure air water mist plasma sterilization device and method for cheese sterilization are provided. The method mainly utilizes the air water mist discharge to generate plasma to sterilize the cheese cavity, the sterilization capability can meet the requirement of food grade, the method can realize quick sterilization without dead angles in the cheese cavity, the effect is obvious, and the cost is reduced to the lowest by utilizing the air water mist discharge.
The technical means adopted by the invention are as follows:
an atmospheric air water mist plasma sterilization device for cheese sterilization, comprising: the cheese processing device comprises a shell and an atomizer positioned outside the shell, wherein a cheese cavity is formed in the shell and used for accommodating and installing a reactor, a fan and a cheese processing component; the atomizer is used for generating mist and introducing the mist into the cheese cavity to form air water mist; the cheese processing component is used for producing cheese; the reactor is a modular reactor with a high-voltage electrode and a ground electrode which are arranged in an intercrossed array, and the introduced air water mist generates plasma through the interval between the high-voltage electrode and the ground electrode; the plurality of fans are arranged to form circulating wind power, so that air water mist in the cheese cavity is circulated and discharged through the reactor for multiple times to generate plasma, the generated plasma is fully filled in the whole cheese cavity through free diffusion and the circulating wind power formed by the plurality of fans, and dead-angle-free sterilization in the cheese cavity after cheese production is realized.
Furthermore, two reactors are arranged and are fixed on two sides of a reactor fixing frame at intervals through tetrafluoro screws, the reactor fixing frame is fixed in the cheese cavity, and tetrafluoro materials are arranged above the reactor fixing frame and are insulated from the reactors; the reactor fixing frame is made of stainless steel.
Further, the two reactors are horizontally arranged and are fixed 200mm above the cheese processing component in the cheese cavity; the distance between the leftmost end of the left side reactor and the inner wall of the left side of the cheese cavity is 100 mm; the rightmost end of the right side reactor is 100mm away from the inner wall of the right side of the cheese cavity.
Further, the reactor is a dielectric barrier discharge device, the high-voltage electrodes and the ground electrodes which are alternately arranged are copper rods, the outside of the reactor is wrapped by a dielectric tube, the dielectric tube is a quartz tube, one end of the whole reactor is uniformly connected with the high-voltage electrodes, the other end of the whole reactor is uniformly connected with the ground electrodes to form array discharge, the two ends of the high-voltage electrodes and the two ends of the ground electrodes are made of tetrafluoro materials at intervals and serve as insulating layers, and epoxy plates are connected to the tetrafluoro materials and serve as fixing pieces to be connected with a reactor fixing frame.
Furthermore, four fans are arranged, the power setting is the same, the four fans are oxidation-resistant fans, and the four fans are fixed at four corners of the cheese cavity through fan fixing frames at special angles; the two fans on the left side are respectively arranged at the vertically central positions of the left reactor, and the two fans on the right side are respectively arranged at the vertically central positions of the right reactor; the wind power of the two fans on the left side is upward in the same direction, the wind power of the two fans on the right side is downward in the same direction, the air water mist in the cheese cavity forms clockwise circulation through the wind power of the four fans, and the air water mist circulates through the two reactors every time when circulating clockwise.
Furthermore, the two fans at the upper part are fixed at the position 200mm above the reactor, and the two fans at the lower part are fixed at the position 200mm away from the bottom of the cavity;
the left upper fan and the right upper fan are inclined by 5-15 degrees through the fan fixing frame; the left lower fan and the right lower fan are inclined by 30-60 degrees through the fan fixing frame;
the upper left fan needs to form an inclination with the left side higher than the right side by 10 degrees through the fan fixing frame, and the upper right fan needs to form an inclination with the right side higher than the left side by 10 degrees through the fan fixing frame;
the left side fan below needs to form an inclination with the left side 45 degrees higher than the right side through a fan fixing frame; the right side fan below needs to form an inclination that the right side is 45 degrees higher than the left side through the fan fixing frame.
Furthermore, two mist through holes are formed in the rear wall of the cheese cavity at intervals, and the two mist through holes are connected with a mist through pipeline of the atomizer through a flange; the two mist through holes are respectively positioned at the position 150mm above the center of the left upper fan and at the position 150mm above the center of the right upper fan.
Furthermore, the atomizer generates mist under the windless condition and leads the mist into the cheese cavity through the mist hole by means of self gravity, the mist entering the cheese cavity needs to be consistent with the wind direction of the fan fixed in a special mode, circulation is formed in the cavity, and the mist is discharged for many times through the reactor; the atomizer is positioned above the fog through hole, and the fog yield of the atomizer is continuously adjustable;
the atomizer is integrally made of white steel, an atomization plate is arranged in the atomizer in a hollow mode, mist is generated on one side, a mist through opening is formed in the other side of the atomizer, the mist through opening and the atomization plate are separated through a partition plate, water drops are prevented from being dripped on the module through the mist through opening to damage the module, one end of a mist through pipeline is connected with the mist through opening of the atomizer, and the other end of the mist through pipeline is connected with a mist through hole in the rear wall of the cheese cavity; the water level in the atomizer is 20-30mm higher than the atomizing plate, the length of the mist passing pipeline is not more than 500mm and is not bent, and the liquid level in the atomizer is 20mm lower than the mist passing opening.
The invention also provides a method for sterilizing the cheese cavity by using the normal-pressure air water mist plasma sterilization device for cheese sterilization, which comprises the following steps:
during the experiment, the atomizer is firstly opened to enable the generated pure mist to enter the cheese cavity through the two mist through holes, the two reactors and the four fans are simultaneously opened after the mist inlet amount is even, the mist and the air in the cheese cavity form circulation together and generate plasma through the reactors for multiple times, the generated plasma is full of the whole cheese cavity through free diffusion and the wind power formed by the four fans, and the dead-angle-free sterilization can be realized in the cavity after a period of time.
Compared with the prior art, the invention has the following advantages:
1. the normal-pressure air water mist plasma sterilization device and method for cheese sterilization provided by the invention utilize an array type dielectric barrier discharge mode to generate plasma, the air water mist discharge effect is more obvious than that of the conventional air discharge method, and compared with a single gas or a plurality of mixed gases, the normal-pressure air water mist plasma sterilization device and method for cheese sterilization have the advantages of more obvious bacterium killing effect, low price and simplicity and convenience in operation.
2. According to the normal-pressure air water mist plasma sterilization device and method for cheese sterilization, air mist is used for discharging to enable some products to be dissolved in mist and then to continue chemical reaction, short-life species participate in reaction to generate products which can continue to act, and meanwhile, the mist is used for accelerating the overall heat dissipation of the reactor.
3. According to the normal-pressure air water mist plasma sterilization device and method for cheese sterilization, provided by the invention, the air water mist is circulated by utilizing the special arrangement position of the fan, the air in the cavity is enabled to flow integrally, the discharge frequency of the air water mist is increased, and therefore, the generated plasma can fill all positions of the cavity, and the discharge efficiency and the sterilization efficiency are greatly improved.
4. According to the normal-pressure air water mist plasma sterilization device and method for cheese sterilization, the sterilization of the cheese cavity belongs to food grade, the sterilization requirement is high, almost no method can meet the high sterilization requirement at present, the method is safe and efficient, the residual quantity is almost zero, and the killing efficiency of escherichia coli in 5min is as high as 99.99%.
In conclusion, the technical scheme of the invention can solve the problems that the traditional sterilization method has residues or is not clean after food sterilization, is easy to cause related diseases and can not meet the living needs of people at present.
Based on the reasons, the invention can be widely popularized in the fields of cheese sterilization and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of an atmospheric air atomization plasma sterilization mode for cheese sterilization according to the present invention.
Fig. 2 is an external view of fig. 1.
FIG. 3 is an external view of the reactor of FIG. 1.
Fig. 4 is a left side view of fig. 3.
FIG. 5 is a graph of the sterilization results of FIG. 1 with varying reactor discharge times.
In the figure: 1. a reactor I; 2. a fan I; 3. a fog hole I; 4. a reactor fixing frame; 5. a cheese cavity; 6. a fog hole II; 7. a fan II; 8. a fan fixing frame; 9. a reactor II; 10. a fan III; 11. a cheese processing component; 12. a fan IV; 13. a high voltage electrode; 14. and a ground electrode.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in the figure, the invention provides a normal-pressure air water mist plasma sterilization device for cheese sterilization, which comprises: the cheese processing device comprises a shell and an atomizer positioned outside the shell, wherein a cheese cavity 5 is formed in the shell and used for accommodating and installing a reactor, a fan and a cheese processing component 11; the atomizer is used for generating mist and introducing the mist into the cheese cavity 5 to form air water mist; the cheese processing component 11 is used for producing cheese; the reactor is a modular reactor with a high-voltage electrode 13 and a ground electrode 14 which are arranged in an intercrossed array, and the introduced air water mist generates plasma through the interval between the high-voltage electrode 13 and the ground electrode 14; the plurality of fans are arranged to form circulating wind power, so that air water mist in the cheese cavity 5 is circulated and discharged through the reactor for multiple times to generate plasma, the generated plasma is fully filled in the whole cheese cavity 5 through free diffusion and the circulating wind power formed by the plurality of fans, and the non-dead-angle sterilization in the cheese cavity 5 after cheese production is realized.
As a preferred embodiment, two reactors are arranged, and are fixed on two sides of a reactor fixing frame 4 at intervals through tetrafluoro screws, the reactor fixing frame 4 is fixed inside a cheese cavity 5, and tetrafluoro material is arranged above the reactor fixing frame 4 and is insulated from the reactors; the reactor fixing frame 4 is made of stainless steel.
In a preferred embodiment, the two reactors are horizontally placed and fixed 200mm above the cheese processing component 11 in the cheese cavity 5; the distance between the leftmost end of the left side reactor and the inner wall of the left side of the cheese cavity 5 is 100 mm; the rightmost end of the right side reactor is 100mm away from the inner wall of the right side of the cheese cavity 5.
As a preferred embodiment, the reactor is a dielectric barrier discharge device, the high-voltage electrodes 13 and the ground electrodes 14 which are alternately arranged are copper rods, the outside of the reactor is wrapped by a dielectric tube, the dielectric tube is a quartz tube, one end of the whole reactor is uniformly connected with the high-voltage electrodes 13, the other end of the whole reactor is uniformly connected with the ground electrodes 14, array discharge is formed, two ends of the high-voltage electrodes 13 and the ground electrodes 14 are made of tetrafluoro materials at intervals and serve as insulating layers, and epoxy plates are connected to the tetrafluoro materials and serve as fixing pieces to be connected with the reactor fixing frame 4.
As a preferred embodiment, four fans are provided, the power setting is the same, all the fans are oxidation-resistant fans, and the four fans are fixed at four corners of the cheese cavity 5 by arranging special angles through fan fixing frames 8; the two fans on the left side are respectively arranged at the vertically central positions of the left reactor, and the two fans on the right side are respectively arranged at the vertically central positions of the right reactor; the wind power of the two fans on the left side is upward in the same direction, the wind power of the two fans on the right side is downward in the same direction, the air water mist in the cheese cavity 5 forms clockwise circulation through the wind power of the four fans, and the air water mist circulates through the two reactors every time when circulating clockwise.
As a preferred embodiment, the upper two fans are fixed at a position 200mm above the reactor, and the lower two fans are fixed at a position 200mm away from the bottom of the cavity;
the left upper fan and the right upper fan are inclined by 5-15 degrees through the fan fixing frame 8; the left lower fan and the right lower fan are inclined by 30-60 degrees through the fan fixing frame 8;
the upper left fan needs to form an inclination with the left side higher than the right side by 10 degrees through the fan fixing frame 8, and the upper right fan needs to form an inclination with the right side higher than the left side by 10 degrees through the fan fixing frame 8;
the left side fan below needs to form an inclination that the left side is 45 degrees higher than the right side through the fan fixing frame 8; the lower right fan needs to form an inclination that the right side is 45 degrees higher than the left side through the fan fixing frame 8.
As a preferred embodiment, two mist through holes are arranged on the rear wall of the cheese cavity 5 at intervals and are connected with a mist through pipeline of an atomizer through a flange; the two mist through holes are respectively positioned at the position 150mm above the center of the left upper fan and at the position 150mm above the center of the right upper fan.
In a preferred embodiment, the atomizer generates mist under the windless condition, the mist is introduced into the cheese cavity 5 through the mist hole by means of the self gravity, the mist entering the cheese cavity 5 needs to be consistent with the wind direction of a fan fixed in a special mode, circulation is formed inside the cavity, and the mist is discharged for multiple times through the reactor; the atomizer is positioned above the fog through hole, and the fog yield of the atomizer is continuously adjustable;
the atomizer is integrally made of white steel, an atomization plate is arranged in the atomizer in a hollow mode, mist is generated on one side, a mist through port is formed in the other side of the atomizer, the mist through port and the atomization plate are separated through a partition plate, water drops are prevented from being dripped on the module through the mist through port to damage the module, one end of a mist through pipeline is connected with the mist through port of the atomizer, and the other end of the mist through pipeline is connected with a mist through hole in the rear wall of the cheese cavity 5; the water level in the atomizer is 20-30mm higher than the atomizing plate, the length of the mist passing pipeline is not more than 500mm and is not bent, and the liquid level in the atomizer is 20mm lower than the mist passing opening.
The invention also provides a method for sterilizing the cheese cavity by using the normal-pressure air water mist plasma sterilization device for cheese sterilization, which comprises the following steps:
during the experiment, the atomizer is firstly opened to enable the generated pure mist to enter the cheese cavity 5 through the two mist through holes, the two reactors and the four fans are simultaneously opened after the mist inlet amount is uniform, the mist and the air in the cheese cavity 5 form circulation together and generate plasma through the reactors for multiple times, the generated plasma is full of the whole cheese cavity 5 through free diffusion and wind power formed by the four fans, and the dead-angle-free sterilization can be realized in the cavity after a period of time.
Example 1
As shown in fig. 1-4, a normal pressure air water mist plasma sterilization device for cheese sterilization utilizes air water mist to discharge to generate plasma to sterilize a cheese cavity under normal pressure, and comprises an integral shell, a cheese cavity 5, an atomizer, two reactors, a reactor fixing frame 4, two mist through holes, four fans, a fan fixing frame 8 and a cheese processing part 11, wherein the two reactors are a reactor i 1 and a reactor ii 9 respectively, the four fans are a fan i 2, a fan ii 7, a fan iii 10 and a fan iv 12 respectively, and the two mist through holes are a mist through hole i 3 and a mist through hole ii 6 respectively. The cheese cavity 5 is a simulated object cavity, and the reactor, the fan, the mist through hole and the line position are integrated and fixed in the cavity. The cheese cavity comprises a whole space structure and a component (cheese processing component 11) used for producing cheese inside, and the rear wall is provided with two mist through holes.
The shell comprises a cheese cavity 5 and a cheese processing part 11 located in the cheese cavity 5, a reactor I1 is fixed at a position 200mm above the cheese processing part 11 and 100mm away from the left side wall of the cheese cavity 5, a reactor II 9 is fixed at a position 200mm above the cheese processing part 11 and 100mm away from the right side wall of the cheese cavity 5, two fans above the reactor I1 are fixed at a position 200mm above the reactor through a fan fixing frame 3, the reactor I1, the reactor II 9 and the reactor fixing frame 4 are isolated by an insulating layer, a fan IV 12 is fixed at a position 50mm away from the left wall of the cheese cavity 5 and 150mm at the bottom by a tripod, the fan III 10 and the fan IV 12 are symmetrically placed, and a fog through hole I3, a fog through hole II 6 needs to be located at a position 150mm above the fan I2 and the fan II 7. During the experiment, the atomizer is firstly opened to enable the generated pure mist to enter the cheese cavity 5 through the mist through hole I3 and the mist through hole II 6, after the mist entering amount is uniform, the reactor I1, the reactor II 9, the fan I2, the fan II 7, the fan III 10 and the fan IV 12 are simultaneously opened to enable the mist and the air in the cheese cavity to form circulation and generate plasma through the reactor for multiple times, the generated plasma is fully filled in the whole cheese cavity through free diffusion and wind power formed by the fan I2, the fan II 7, the fan III 10 and the fan IV 12, and the inside of the cavity can be sterilized without dead angles after a period of time.
The atomizer generates mist under the windless condition, the mist entering the cheese cavity 5 through the mist hole is consistent with the wind direction of a fan fixed in a special mode, and forms circulation inside the cheese cavity and discharges for many times through the reactor. The two reactors are fixed above a part (cheese processing part 11) in the cavity at intervals, are modular reactors with a high-voltage electrode 13 and a ground electrode 14 which are arranged in an intercrossing array mode, are fixed inside the cheese cavity 5 through a reactor fixing frame, and can achieve the optimal effect through position fixing and matching. The atomizer generates fog under the windless condition and is introduced into the cheese cavity by the gravity of the atomizer, the atomizer needs to be positioned above the fog through hole, and the fog through hole needs to be positioned above the fan. The four fans are oxidation-resistant fans, and are fixed at four corners of the cheese cavity by the fan fixing frame at special angles, so that the water mist in the cheese cavity forms circulation and discharges through the module for many times. The atomizer is integrally made of white steel, the atomizing plate is arranged in the hollow part, mist is generated on one side, the other side is provided with a mist passing hole, the mist passing hole and the atomizing plate are separated by a partition plate, water drops are prevented from being dropped on the module through the mist passing hole to damage the module, one end of the mist passing pipeline is connected with the mist passing hole of the atomizer, the other end of the mist passing pipeline is connected with the mist passing hole of the rear wall of the cheese cavity, and the water level in the atomizer is higher than the atomizing plate by 20-30 mm.
Two reactors placed inside the cheese cavity are all horizontally placed through a reactor fixing frame, the two reactors are placed on two sides of the reactor fixing frame and fixed through tetrafluoro screws, and the reactor fixing frame is made of stainless steel. The reactors on the two sides are horizontally placed, the distance from the reactor I1 on the left side to the inner wall on the left side of the cheese cavity is 100mm, and the distance from the reactor II 9 on the right side to the inner wall on the right side is 100 mm.
The reactor comprises a tetrafluoro material, a quartz tube and a copper rod, wherein the high-voltage electrode and the ground electrode are both copper rods, the quartz tube is wrapped on the outer side of the copper rod and is alternately arranged, one end of the quartz tube is uniformly connected with the high-voltage electrode, the other end of the quartz tube is uniformly connected with the ground electrode to form array discharge, both ends of the high-voltage electrode and the ground electrode are tetrafluoro material intervals serving as insulating layers, and epoxy plates are connected on the tetrafluoro material to serve as fixing pieces to be connected with a reactor fixing frame. Specifically, the reactor is a dielectric barrier discharge device, a high-voltage electrode 13 and a ground electrode 14 are correctly connected, an insulating layer is applied among a reactor I1, a reactor II 9 and a reactor fixing frame 4, the high-voltage electrode and the ground electrode are both composed of copper columns with the diameter of 1mm, a dielectric tube is arranged outside the copper columns, the high-voltage electrode and the ground electrode are alternately arranged at the interval of 1mm and are divided into two layers, both ends of the high-voltage electrode and the ground electrode are fixed by a tetrafluoro member, and plasma is generated in the introduced air mist through the interval between the high-voltage electrode and the ground electrode.
The two reactors need to be horizontally arranged, a reactor fixing frame 8 needs to be fixed 200mm above the internal part (cheese processing part 11) of the cheese cavity, the reactor fixing frame 8 needs to be fixedly connected with the inside of the cheese cavity 5, and the upper part of the reactor fixing frame 8 is made of a tetrafluoro material as insulation. The leftmost end of the left side reactor I1 in the horizontally placed reactor is 100mm away from the left side wall of the cheese cavity, and the rightmost end of the right side reactor II 9 in the horizontally placed reactor is 100mm away from the right wall of the cheese cavity.
Of the four fans, the two fans on the left side are vertically centered above and below the reactor I1 on the left side, and the two fans on the right side are vertically centered above and below the reactor II 9 on the right side. The left upper fan and the right upper fan need to be tilted by 5-15 degrees by the fan fixing frame, and the left lower fan and the right lower fan need to be tilted by 30-60 degrees by the fan fixing frame. The upper two fans need to be fixed at the position 200mm above the reactor; the left side fan above needs to form a 10-degree inclination with the left side higher than the right side through the fixing frame; the right side fan above the fan needs to form an inclination that the right side is 10 degrees higher than the left side through the fixing frame; the two fans below need to be fixed at a position 200mm away from the bottom of the cavity; the left fan below needs to form an inclination with the left side 45 degrees higher than the right side through a fixing frame; the right side fan below needs to form an inclination that the right side is 45 degrees higher than the left side through the fixing frame. All fans need to be in uniform horizontal or vertical positions; the fan power settings are the same. The wind power syntropy of two fans on the left side is upwards, and the wind power syntropy of two fans on the right side is downwards, and air water smoke forms clockwise circulation through four fan wind-force, and air water smoke circulates each time and all need pass through the reactor when clockwise circulation.
The two mist through holes are respectively positioned on the center of the fan I2 above the left side and the center of the fan II 7 above the right side, the rear wall of the cheese cavity enables the mist through pipeline of the atomizer to be connected with the two mist through holes through the flange, and the two mist through holes are respectively required to be positioned 150mm above the special placing positions of the two fans above. The length of a mist passing pipeline of the atomizer is not more than 500mm and is not bent, the atomizer is arranged at a position 300mm right above a mist passing hole in the rear wall of the cheese cavity, the mist production of the atomizer is continuously adjustable, and the liquid level in the atomizer is about 20mm lower than the mist passing hole.
The invention uses air water mist to discharge, reduces the phenomenon that the traditional atomizer causes the outside air to enter the cheese cavity to cause the air in the cavity to be replaced, increases the residence time of the mist in the cavity, improves the discharging efficiency of the mist and further improves the whole sterilization efficiency.
Example 2
In this embodiment, the cheese cavity is 2100mm × 500mm × 1300mm in size, and 9 positions are uniformly selected in the space and respectively placed at a concentration of 105The cfu/ml dried escherichia coli bacterial piece is used for verifying the uniformity of space density, as shown in fig. 5, the power of fans of an experimental group is 22W, the mist production amount of an atomizer is changed, and the discharging time of a reactor is changed to be 3min, 5min, 6min and 7min, so that the maximum sterilization efficiency of the interior of a cheese cavity in the shortest time is achieved, and each group of experiments begin with the dried bacterial piece put into the cheese cavity.
When each group of experiments is carried out, the atomizer is firstly opened to enable the generated pure mist to enter the cheese cavity 5 through the two mist through holes, the two reactors and the four fans are simultaneously opened after the mist inlet amount is uniform, the mist and the air in the cheese cavity 5 form circulation together and generate plasma through the reactors for multiple times, the generated plasma is fully filled in the whole cheese cavity 5 through free diffusion and wind power formed by the four fans, and dead-angle-free sterilization can be realized in the cavity after a period of time.
After the experiment is finished, placing the bacterial sheet in a 10ml test tube added with 2ml of sterile water for ultrasonic treatment, taking 300 mul of liquid after ultrasonic treatment to perform plate coating culture in a solid culture medium, placing the coated solid culture medium in a constant temperature incubator at 37 ℃ for culturing for 24 hours, comparing the culture medium with the original culture medium, and observing the sterilization efficiency, wherein the result shows that the sterilization efficiency of the invention on escherichia coli can reach 99.99% within 5 min.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A normal pressure air water mist plasma sterilization device for cheese sterilization is characterized by comprising: a housing and an atomiser located outside the housing, the housing having a cheese cavity (5) therein for housing a reactor, fan and cheese processing components (11); the atomizer is used for generating mist and introducing the mist into the cheese cavity (5) to form air water mist; the cheese processing component (11) is used for producing cheese; the reactor is a modular reactor with a high-voltage electrode (13) and a ground electrode (14) which are arranged in an intercrossed array, and the introduced air water mist generates plasma through the interval between the high-voltage electrode (13) and the ground electrode (14); the plurality of fans are arranged to form circulating wind power, so that air water mist in the cheese cavity (5) is circulated and discharged through the reactor for multiple times to generate plasma, the generated plasma is fully filled in the whole cheese cavity (5) through free diffusion and the circulating wind power formed by the plurality of fans, and the non-dead-angle sterilization in the cheese cavity (5) after cheese production is realized.
2. An atmospheric air water mist plasma sterilization device for cheese sterilization according to claim 1, wherein two reactors are provided, and are fixed at two sides of a reactor fixing frame (4) at intervals through tetrafluoro screws, the reactor fixing frame (4) is fixed inside the cheese cavity (5), and tetrafluoro material is arranged above the reactor fixing frame (4) and is insulated from the reactors; the reactor fixing frame (4) is made of stainless steel.
3. An atmospheric air water mist plasma sterilization apparatus for cheese sterilization according to claim 2, wherein both said reactors are horizontally placed, both fixed 200mm above the cheese processing section (11) inside the cheese chamber (5); the leftmost end of the left side reactor is 100mm away from the inner wall of the left side of the cheese cavity (5); the rightmost end of the right side reactor is 100mm away from the inner wall of the right side of the cheese cavity (5).
4. The atmospheric air water mist plasma sterilization device for cheese sterilization according to claim 1, 2 or 3, wherein the reactor is a dielectric barrier discharge device, the high voltage electrodes (13) and the ground electrodes (14) which are alternately arranged are copper rods, the outside of the reactor is wrapped by a dielectric tube, the dielectric tube is a quartz tube, one end of the whole reactor is uniformly connected with the high voltage electrodes (13), the other end of the whole reactor is uniformly connected with the ground electrodes (14) to form array discharge, both ends of the high voltage electrodes (13) and the ground electrodes (14) are made of tetrafluoro materials at intervals as insulating layers, and epoxy plates are connected to the tetrafluoro materials as fixing members to be connected with the reactor fixing frame (4).
5. An atmospheric air water mist plasma sterilization device for cheese sterilization according to claim 2 or 3, wherein four fans are provided, the power setting is the same, the four fans are oxidation-resistant fans, and the four fans are fixed at four corners of the cheese cavity (5) at special angles through fan fixing frames (8); the two fans on the left side are respectively arranged at the vertically central positions of the left reactor, and the two fans on the right side are respectively arranged at the vertically central positions of the right reactor; the wind power of the two fans on the left side is upward in the same direction, the wind power of the two fans on the right side is downward in the same direction, the air water mist in the cheese cavity (5) forms clockwise circulation through the wind power of the four fans, and the air water mist circulates through the two reactors every time when circulating clockwise.
6. An atmospheric-pressure air water mist plasma sterilization device for cheese sterilization according to claim 5, wherein the two fans above are fixed 200mm above the reactor, and the two fans below are fixed 200mm from the bottom of the chamber;
the left upper fan and the right upper fan are inclined by 5-15 degrees through the fan fixing frame (8); the left lower fan and the right lower fan are inclined by 30-60 degrees through the fan fixing frame (8);
the upper left fan needs to form an inclination with the left side higher than the right side by 10 degrees through the fan fixing frame (8), and the upper right fan needs to form an inclination with the right side higher than the left side by 10 degrees through the fan fixing frame (8);
the left side fan below needs to form an inclination with the left side 45 degrees higher than the right side through a fan fixing frame (8); the right side fan below needs to form an inclination that the right side is 45 degrees higher than the left side through a fan fixing frame (8).
7. An atmospheric-pressure air water mist plasma sterilization device for cheese sterilization according to claim 5, characterized in that the back wall of the cheese cavity (5) is provided with two mist through holes at intervals, and the two mist through holes are connected with a mist through pipeline of an atomizer through a flange; the two mist through holes are respectively positioned at the position 150mm above the center of the left upper fan and at the position 150mm above the center of the right upper fan.
8. An atmospheric air water mist plasma sterilization device for cheese sterilization according to claim 1, wherein the atomizer is a device which generates mist under windless condition and leads the mist into the cheese cavity (5) through the mist hole by self gravity, the mist entering the cheese cavity (5) needs to be consistent with the wind direction of a fan fixed in a special way and forms circulation in the cavity and discharges for many times through the reactor; the atomizer is positioned above the fog through hole, and the fog yield of the atomizer is continuously adjustable;
the atomizer is integrally made of white steel, an atomization plate is arranged in the atomizer in a hollow mode, mist is generated on one side, a mist through port is formed in the other side of the atomizer, the mist through port and the atomization plate are separated through a partition plate, water drops are prevented from being dripped on the module through the mist through port to damage the module, one end of a mist through pipeline is connected with the mist through port of the atomizer, and the other end of the mist through pipeline is connected with a mist through hole in the rear wall of the cheese cavity (5); the water level in the atomizer is 20-30mm higher than the atomizing plate, the length of the mist passing pipeline is not more than 500mm and is not bent, and the liquid level in the atomizer is 20mm lower than the mist passing opening.
9. A method of sterilizing a cheese chamber using an atmospheric air water mist plasma sterilization apparatus for cheese sterilization as claimed in any of claims 1-8, comprising the steps of:
during the experiment, the atomizer is firstly opened to enable the generated pure mist to enter the cheese cavity (5) through the two mist through holes, the two reactors and the four fans are simultaneously opened after the mist inlet amount is even, the mist and the air in the cheese cavity (5) form circulation together and generate plasma through the reactors for many times, the generated plasma is full of the whole cheese cavity (5) through free diffusion and the wind power formed by the four fans, and the dead-angle-free sterilization can be realized in the cavity after a period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076306.1A CN113841735B (en) | 2021-09-14 | 2021-09-14 | Atmospheric air water mist plasma sterilization device and method for cheese sterilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076306.1A CN113841735B (en) | 2021-09-14 | 2021-09-14 | Atmospheric air water mist plasma sterilization device and method for cheese sterilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113841735A true CN113841735A (en) | 2021-12-28 |
| CN113841735B CN113841735B (en) | 2023-04-28 |
Family
ID=78974218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111076306.1A Active CN113841735B (en) | 2021-09-14 | 2021-09-14 | Atmospheric air water mist plasma sterilization device and method for cheese sterilization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113841735B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343106A (en) * | 2011-07-22 | 2012-02-08 | 大连民族学院 | Atmospheric-pressure low-temperature plasma sterilizing device and sterilizing method |
| CN104225638A (en) * | 2014-08-14 | 2014-12-24 | 西安交通大学 | Plasma atomized sterilization device with temperature of lower than 80 DEG C |
| CN204232170U (en) * | 2014-11-27 | 2015-04-01 | 浙江熊猫乳业集团股份有限公司 | The sterilization output device of cheese sterilization forming machine |
| US20170182342A1 (en) * | 2015-12-24 | 2017-06-29 | Agency For Defense Development | Decontamination and sterilization device with flexible enclosing cover using plasma and reactive gas |
| WO2019135519A1 (en) * | 2018-01-03 | 2019-07-11 | 강경두 | Food sterilizing device using plasma |
| CN209134763U (en) * | 2018-10-31 | 2019-07-23 | 福建省农业机械化研究所(福建省机械科学研究院） | A kind of intelligence germinating cabinet |
| CN110394038A (en) * | 2019-08-08 | 2019-11-01 | 北京工商大学 | A kind of device and method using low-temperature plasma activation Water warfare air |
| CN111336617A (en) * | 2020-04-03 | 2020-06-26 | 清华大学盐城环境工程技术研发中心 | Plasma coupling atomizing air purification system |
| CN112294991A (en) * | 2019-07-31 | 2021-02-02 | 青岛海尔智能技术研发有限公司 | Plasma sterilization disinfection cabinet and disinfection method |
| CN212678252U (en) * | 2020-07-24 | 2021-03-12 | 中国科学院理化技术研究所 | Food sterilization device based on plasma technology |
| CN113101389A (en) * | 2021-04-26 | 2021-07-13 | 北京农学院 | Plasma sterilization device, preparation method of sterilization gas and sterilization method |
-
2021
- 2021-09-14 CN CN202111076306.1A patent/CN113841735B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343106A (en) * | 2011-07-22 | 2012-02-08 | 大连民族学院 | Atmospheric-pressure low-temperature plasma sterilizing device and sterilizing method |
| CN104225638A (en) * | 2014-08-14 | 2014-12-24 | 西安交通大学 | Plasma atomized sterilization device with temperature of lower than 80 DEG C |
| CN204232170U (en) * | 2014-11-27 | 2015-04-01 | 浙江熊猫乳业集团股份有限公司 | The sterilization output device of cheese sterilization forming machine |
| US20170182342A1 (en) * | 2015-12-24 | 2017-06-29 | Agency For Defense Development | Decontamination and sterilization device with flexible enclosing cover using plasma and reactive gas |
| WO2019135519A1 (en) * | 2018-01-03 | 2019-07-11 | 강경두 | Food sterilizing device using plasma |
| CN209134763U (en) * | 2018-10-31 | 2019-07-23 | 福建省农业机械化研究所(福建省机械科学研究院） | A kind of intelligence germinating cabinet |
| CN112294991A (en) * | 2019-07-31 | 2021-02-02 | 青岛海尔智能技术研发有限公司 | Plasma sterilization disinfection cabinet and disinfection method |
| CN110394038A (en) * | 2019-08-08 | 2019-11-01 | 北京工商大学 | A kind of device and method using low-temperature plasma activation Water warfare air |
| CN111336617A (en) * | 2020-04-03 | 2020-06-26 | 清华大学盐城环境工程技术研发中心 | Plasma coupling atomizing air purification system |
| CN212678252U (en) * | 2020-07-24 | 2021-03-12 | 中国科学院理化技术研究所 | Food sterilization device based on plasma technology |
| CN113101389A (en) * | 2021-04-26 | 2021-07-13 | 北京农学院 | Plasma sterilization device, preparation method of sterilization gas and sterilization method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113841735B (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6911225B2 (en) | Method and apparatus for non-thermal pasteurization of living-mammal-instillable liquids | |
| Machala et al. | DC discharges in atmospheric air for bio-decontamination–spectroscopic methods for mechanism identification | |
| EP0910544B1 (en) | Ozone applications for disinfection, purification and deodorization | |
| US7781745B2 (en) | Apparatus and method for sterilization of food products | |
| CN104013985B (en) | Portable micro-plasma sterilizer | |
| US20100219136A1 (en) | Fluid treatment using plasma technology | |
| JP2004522455A (en) | Method and apparatus for non-heat pasteurization | |
| JP2017176201A (en) | Sterilization method and device of liquid material | |
| CN106028616A (en) | Gliding arc discharge plasma jet generation device and method thereof | |
| CN113841735B (en) | Atmospheric air water mist plasma sterilization device and method for cheese sterilization | |
| CN111770623A (en) | Plasma air sterilization and disinfection equipment | |
| CN110946178A (en) | Atmospheric pressure low temperature plasma fruit fresh-keeping device | |
| EP1742671B1 (en) | Electric field fluid treatment chamber | |
| CN111248392A (en) | Falling film type low-temperature plasma-pulse intense light sterilization reactor for fruit and vegetable juice | |
| CN110831312B (en) | Efficient plasma gas-liquid discharge system | |
| CN110876222A (en) | Cold plasma generator for mutation breeding | |
| Azharonok et al. | Bactericidal action of the plasma of high-frequency capacitive and barrier discharges on microorganisms | |
| CN115428824A (en) | Marine product low temperature low plasma sterilization equipment that keeps fresh | |
| CN116395783A (en) | Device and method for preparing plasma activated water by atmospheric pressure plasma jet | |
| CN113491306A (en) | NFC fruit and vegetable juice low-temperature plasma-pulse intense light sterilization reactor | |
| CN207505195U (en) | A kind of plasma sterilization device and electric discharge part | |
| CN216022313U (en) | Plasma disinfection device for storage cabinet | |
| CN212204883U (en) | Microwave disinfection and sterilization device | |
| RU2195961C2 (en) | Method for making sterilization | |
| CN109937873B (en) | Plasma plant mutagenesis device and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |