CN105167110A - Sterile purifying fresh-keeping device, sterilization method and refrigerator - Google Patents

Abstract

The invention provides an aseptic purification and preservation device, a sterilization method and a refrigerator. The aseptic purification and fresh-keeping device includes: an anti-oxidation sealed box, which has an access opening and a cover for sealing the access opening. The anti-oxidation sealing box also has an air inlet and an air outlet, wherein the air inlet is configured to The air outside the airtight box is introduced into the anti-oxidation airtight box, and the air outlet is configured to discharge the air in the anti-oxidation airtight box to the outside of the anti-oxidation airtight box; the ozone generator is configured to supply ozone to the anti-oxidation airtight box to seal the anti-oxidation The items in the box are sterilized; the sterilizing filter is arranged at the air inlet for sterilizing the air flowing through it; and the deozone filter is arranged at the air outlet for removing ozone in the air flowing through it . In the present invention, after using ozone to sterilize articles, the ozone can be quickly and effectively removed by using an ozone-removing filter in a wind circulation manner, so that articles can be sterilized with a higher ozone concentration.

Description

Aseptic purification and preservation device, sterilization method and refrigerator

technical field

The invention relates to the technical field of sterilization, in particular to an aseptic purification and preservation device, a sterilization method and a refrigerator.

Background technique

The function of the refrigerator is to provide a low temperature environment to prolong the storage time of items. The food stored in the storage room of the refrigerator, especially the food stored in the cold room, will still spoil after a long time. Food spoilage is mainly caused by bacteria and molds. In order to kill bacteria and molds, people initially installed adsorption devices in refrigerator storage compartments to absorb odors. Bacteria and molds do not play any role. It only absorbs the odor produced by microorganisms and has no effect on food preservation.

In order to thoroughly sterilize the storage compartment of the refrigerator, it has been disclosed in the prior art to use ultraviolet rays and ozone to kill bacteria in the refrigerator. In the prior art of using ultraviolet rays to sterilize, the ultraviolet lamp is usually set in the storage compartment, but the ultraviolet radiation on the inner container of the refrigerator is easy to make the inner container material aging, and the user is also vulnerable to ultraviolet radiation when opening the door during the sterilization process, which is not safe. sex. Ozone is a high-efficiency sterilizing substance, which can effectively kill bacteria on food in the storage room. But ozone is harmful to human body, and its smell is heavier, and the ozone degerming technology that is used on refrigerator all adopts the ozone with lower concentration at present, and sterilizing effect is not remarkable enough.

Contents of the invention

An object of the first aspect of the present invention is to overcome at least one defect in the prior art, and provide an aseptic purification and preservation device, which can remove ozone after sterilizing items with ozone, so as to avoid harm to users.

A further object of the first aspect of the present invention is to use high-concentration ozone to sterilize the articles in the aseptic purification and preservation device, so as to achieve comprehensive sterilization and purification.

Another further object of the first aspect of the present invention is to keep the articles in the aseptic purification fresh-keeping device in a sterile environment.

An object of the second aspect of the present invention is to provide a sterilization method to effectively sterilize the articles in the aseptic purification and fresh-keeping device.

A further object of the second aspect of the present invention is to remove the ozone in the anti-oxidation sealed box after sterilization, and at the same time ensure the aseptic environment in the aseptic purification and preservation device.

An object of the third aspect of the present invention is to provide a refrigerator.

According to a first aspect of the present invention, a kind of aseptic purification fresh-keeping device is provided, comprising:

The anti-oxidation sealed box has an access port for accessing items and a cover for sealing the access port. The anti-oxidation sealed box also has independent air inlets and air outlets, wherein the inlet The tuyere is configured to introduce air outside the anti-oxidation sealed box into the anti-oxidation sealed box, and the air outlet is configured to discharge the air in the anti-oxidation sealed box to the outside of the anti-oxidation sealed box;

an ozone generator configured to supply ozone into the anti-oxidation sealed box to sterilize the items in the anti-oxidation sealed box;

a sterilizing filter, arranged at the air inlet, for sterilizing the air passing through it; and

The deozone filter is arranged at the air outlet and is used for removing ozone in the air flowing through it.

Optionally, the sterilizing filter is a filter screen filled with silver-loaded cordierite;

The deozone filter is a filter screen filled with a molecular sieve ozone catalyst.

Optionally, the air inlet and the air outlet are respectively provided with an air inlet door and an air outlet door, and the air inlet door and the air outlet door are configured as follows:

When the ozone generator is opened to supply ozone to the anti-oxidation sealed box, close the air inlet and the air outlet;

Open the air inlet and the air outlet when the ozone generator is shut down.

Optionally, the aseptic purification and preservation device also includes:

The blower is configured to be turned on when the ozone generator is shut down, so that the ozone-containing gas in the anti-oxidation sealed box flows out of the anti-oxidation sealed box after the ozone is removed by the deozone filter, and the The air outside the anti-oxidation sealed box flows into the anti-oxidation sealed box after being sterilized by the sterilization filter.

Optionally, the ozone generator is further configured to supply ozone into the anti-oxidation sealed box so that the ozone concentration in the anti-oxidation sealed box remains above a first set threshold within a preset time.

Optionally, the preset time is 5-15min;

The first set threshold is 40ppm.

Optionally, the aseptic purification and preservation device also includes:

An ozone concentration sensor for detecting the ozone concentration in the anti-oxidation sealed box;

The fan is further configured to shut down when the ozone concentration in the anti-oxidation sealed box drops below a second set threshold after the ozone generator is shut down, wherein the second set threshold is less than the first a set threshold; and

The air inlet door and the air outlet door are configured to close the air inlet and the air outlet when the fan is shut down.

Optionally, the second set threshold is 0.05ppm.

Optionally, the anti-oxidation sealed box is made of stainless steel.

According to the second aspect of the present invention, there is provided a sterilization method for sterilizing the items in any of the aforementioned aseptic purification and preservation devices, the sterilization method comprising:

Close the air inlet and the air outlet of the anti-oxidation sealed box;

Turn on the ozone generator, supply ozone into the anti-oxidation sealed box so that the ozone concentration in the anti-oxidation sealed box remains above the first set threshold, thereby performing an anti-oxidation treatment on the articles in the anti-oxidation sealed box sterilization;

When the ozone generator is turned on for a set time, it is turned off.

Optionally, the sterilizing method also includes after shutting down the ozone generator:

Turn on the fan of the aseptic purification and preservation device, and open the air outlet and the air inlet;

Detect the ozone concentration in the anti-oxidation sealed box;

When the ozone concentration in the anti-oxidation airtight box drops below the second set threshold, shut down the fan and close the air inlet and the air outlet.

Optionally, the first set threshold is 40ppm;

The second set threshold is 0.05ppm;

The setting time is 5-15min.

According to a third aspect of the present invention, a refrigerator is provided, comprising:

storage compartments; and

The aseptic purification and fresh-keeping device described in any one of the foregoing is arranged in the storage compartment.

Optionally, the refrigerator also includes:

an evaporator, which cools the air passing through it;

an air supply duct for delivering the air cooled by the evaporator to the storage compartment; and

a return air duct, used to deliver the air flowing out of the storage compartment to the evaporator for cooling;

The aseptic purification and preservation device also includes:

an air inlet pipe, one end of which communicates with the air inlet, and the other end is arranged in the air supply duct, so as to introduce the air in the air supply duct into the anti-oxidation sealed box; and

One end of the air outlet pipe communicates with the air outlet, and the other end is arranged in the return air duct, so as to introduce the air flowing out through the air outlet into the return air duct.

The invention utilizes an ozone generator to provide ozone in the anti-oxidation sealed box, thereby sterilizing the articles in the anti-oxidized sealed box; and, the anti-oxidized sealed box also has independent air inlets and air outlets; The ozone filter decomposes the ozone flowing through it, so that the air flowing out through the air outlet hardly contains ozone, so as to avoid pollution to the environment outside the anti-oxidation sealed box. At the same time, by setting a sterilizing filter at the air inlet to sterilize the ozone flowing through it, the air entering the anti-oxidation sealed box through the air inlet is basically sterile, thereby preventing the air entering the anti-oxidation sealed box from carrying germs and causing Anti-oxidation sealed box items secondary pollution.

Further, the present invention closes the air inlet and the air outlet when the ozone generator is turned on to supply ozone to the anti-oxidation sealed box, thereby facilitating the stabilization of the ozone concentration during the sterilization process using ozone; and, by When the rear ozone generator is shut down, the air inlet and outlet are opened, and the ozone concentration in the anti-oxidation sealed box can be quickly reduced through wind circulation, so as to achieve harmless purification and avoid the residual ozone after sterilization from causing harm to users; During the circulation process, the articles in the aseptic purification and fresh-keeping device are kept in a sterile environment by using the sterilizing filter at the air inlet.

After the present invention uses ozone to sterilize the articles, the ozone can be quickly and effectively removed by means of air circulation through the deozone filter, so that the present invention can use a higher ozone concentration to sterilize the articles in the aseptic purification and fresh-keeping device, Furthermore, it has better sterilization effect and realizes comprehensive sterilization and purification.

Furthermore, the aseptic purification and preservation device of the present invention can meet the purification requirements of specific groups of people, can solve the sterilization and purification of the surface of objects, and meet the requirements of medical use. The aseptic purification and preservation device of the present invention can realize a sealed aseptic space, and is suitable for selection by special groups of people with specific needs.

The refrigerator of the present invention selects an ozone generator capable of generating high-concentration ozone for the first time, and the use of high-concentration ozone can completely kill various germs and bacteria without dead ends, degrade stubborn pesticide residues, and remove odorous gases and the like. It is especially suitable for specific refrigerators such as medical refrigerators, treasure refrigerators, and mother and baby refrigerators.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural diagram of an aseptic purification and preservation device according to an embodiment of the present invention;

Fig. 2 is a schematic exploded view of the aseptic purification and preservation device shown in Fig. 1;

Fig. 3 is a schematic cross-sectional view of an aseptic purification and preservation device according to an embodiment of the present invention;

Fig. 4 is a schematic flow chart of a sterilization method according to an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention.

Detailed ways

Fig. 1 is a schematic structural diagram of an aseptic purification and preservation device 20 according to an embodiment of the present invention; Fig. 2 is a schematic exploded view of the aseptic purification and preservation device 20 shown in Fig. 1 . As shown in FIGS. 1 and 2 , the aseptic purification and preservation device 20 may generally include an anti-oxidation sealed box 22 and an ozone generator 26 . The anti-oxidation sealed box 22 has an opening for accessing articles and a cover body 21 for sealing the opening. The ozone generator 26 is configured to supply ozone into the anti-oxidation sealed box 22 to sterilize the articles in the anti-oxidation sealed box 22 .

In particular, the anti-oxidation sealed box 22 also has an air inlet 222 and an air outlet 221 that are independent of each other. The air inlet 222 is configured to introduce the air outside the anti-oxidation sealing box 22 into the anti-oxidation sealing box 22 , and the air outlet 221 is configured to discharge the air in the anti-oxidation sealing box 22 to the outside of the anti-oxidation sealing box 22 . A sterilizing filter 25 is provided at the air inlet 222 for sterilizing the air flowing through it; a deozone filter 24 is provided at the air outlet 221 for removing ozone in the air flowing through it.

In some embodiments, the germicidal filter 25 may be a filter mesh filled with silver-loaded cordierite. The cordierite can be immersed in a solution containing silver ions to form silver-loaded cordierite, and then the silver-loaded cordierite can be filled on a filter net to form a sterilizing filter 25 . The deozone filter 24 can be a filter screen filled with a molecular sieve ozone catalyst. The existing ozone catalyst can be carried on the molecular sieve to form a molecular sieve ozone catalyst, and then the molecular sieve ozone catalyst can be filled on the filter net to form a deozone filter net. The sterilizing filter 25 and the deozone filter 24 can be arranged inside the air inlet 222 and the air outlet 221 respectively.

In other embodiments, the sterilization filter 25 can be a honeycomb porous ventilation structure filled with silver-loaded cordierite; the deozone filter 24 can be a honeycomb porous ventilation structure filled with a molecular sieve ozone catalyst.

In some embodiments, the anti-oxidation sealed box 22 may include a box with an upper opening formed by a bottom wall, a front wall combined with the bottom wall at respective bottom ends, a rear wall, and two opposite side walls. The opening is the aforementioned pick-and-place opening for accessing items. A rib 211 matching the shape of the access opening extends downward from the lower surface of the cover body 21 , so as to close the access opening by inserting the rib 211 into the access opening. In order to ensure the sealing effect, a flange 229 surrounding the access opening can be provided on the front wall, rear wall, and two opposite side walls of the box close to the access opening, and a ring of sealing can be arranged on the flange 229 Strip 23, when the rib 211 of the cover 21 is inserted into the opening, the lower surface of the cover 21 outside the rib 211 is in contact with the sealing strip 23, or the sealing strip 23 is sandwiched between the cover 21 and the flange 229 between.

In an alternative embodiment, the pick-and-place opening can also be arranged on the front side of the anti-oxidation sealing box 22 , or directly opened on any wall of the anti-oxidation sealing box 22 . In order to prevent the anti-oxidation sealing box 22 from being oxidized by ozone, the anti-oxidation sealing box 22 can be made of stainless steel. The anti-oxidation sealed box 22 made of stainless steel will give people a feeling of high-end atmosphere. In an alternative embodiment, it may also be made of polybutylene terephthalate (polybutyleneterephthalate, PBT for short).

In some embodiments, both the air inlet 222 and the air outlet 221 are formed on the front wall. The middle part of the sterilizing filter 25 extends forward with a hollow limiting claw 251 , so as to fix the sterilizing filter 25 inside the air inlet 222 by extending the limiting claw 251 into the air inlet 222 . The middle part of the deozone filter 24 extends forward from the hollow limit claw 241 , so as to fix the deozone filter 24 inside the air outlet 221 by extending the limit claw 241 into the air outlet 221 .

Also offer ozone generator 26 installation holes 223 on the front wall of anti-oxidation sealing box 22, this installation hole 223 can be opened between air inlet 222 and air outlet 221, and the ozone gas outlet of ozone generator 26 is clipped in installation hole 223 on. In other embodiments, the ozone generated by the ozone generator 26 can also be sent into the anti-oxidation sealed box 22 through a pipeline.

Fig. 3 is a schematic cross-sectional view of an aseptic purification and fresh-keeping device 20 according to an embodiment of the present invention, and the arrows in the figure indicate the flow direction of the airflow. In a further embodiment, an air inlet door 292 and an air outlet door 291 are respectively provided at the air inlet 222 and the air outlet 221 for closing or opening the air inlet 222 and the air outlet 221 . The air inlet damper 292 and the air outlet damper 291 can be electrically controlled dampers. The air inlet damper 292 and the air outlet damper 291 are configured to close the air inlet 222 and the air outlet 221 when the ozone generator 26 is opened to supply ozone to the anti-oxidation sealed box 22 to sterilize the articles therein; Open air inlet 222 and air outlet 221 when stopping. That is to say, when the ozone generator 26 is turned on until the process before it is shut down, the air inlet 222 and the air outlet 221 are kept closed, so that the anti-oxidation sealing box 22 is sealed to prevent ozone from passing through the air inlet 222 and the air outlet 221. Diffusion. When the ozone generator 26 shuts down to end or complete the sterilization of the articles in the anti-oxidation sealed box 22, open the air inlet 222 and the air outlet 221, so that the air in the anti-oxidation sealed box 22 flows out through the air outlet 221 , and the air in the external environment flows into the anti-oxidation sealed box 22 through the air inlet 222 (that is, the wind circulation process). The ozone in the air is decomposed; when the air outside the anti-oxidation sealed box 22 flows through the sterilizing filter 25, the bacteria in the air are killed. When the air in the anti-oxidation sealed box 22 flows out through the air outlet 221, the ozone contained in the air is decomposed and removed by the deozone filter 24, so that the air flowing out through the air outlet 221 hardly contains ozone, so as not to resist Oxidation of the environment outside the sealed box 22 causes contamination. Simultaneously, when the air outside the anti-oxidation sealing box 22 enters the anti-oxidation sealing box 22 through the air inlet 222, it will not carry germs because it is sterilized by the sterilizing filter 25, preventing bacteria or viruses in the external air from entering the anti-oxidation sealing box 22, leading to secondary pollution of the items in the anti-oxidation sealed box 22.

Those skilled in the art can appreciate that the ozone generator 26 in the prior art can generate ozone continuously or intermittently, which means that the ozone generator 26 can continuously or intermittently supply ozone to the anti-oxidation sealed box 22 . For the ozone generator 26 that produces ozone intermittently, in the process (in this process, the ozone generator 26 may intermittently supply ozone to the anti-oxidation sealed box 22) after the ozone generator 26 is opened until shutting down, Keep the air inlet 222 and the air outlet 221 closed.

Continuing to refer to FIG. 3 , the aseptic purification and preservation device 20 of the embodiment of the present invention may also include a fan 220 configured to be turned on when the ozone generator 26 is shut down, so that the ozone-containing gas in the anti-oxidation sealed box 22 is filtered through deozone After the net removes the ozone, it flows out of the anti-oxidation sealed box 22, and the air outside the anti-oxidation sealed box 22 flows into the anti-oxidation sealed box 22 after being sterilized by the sterilizing filter. The fan 220 is preferably arranged outside the anti-oxidation sealed box 22 . In a preferred embodiment, the blower fan 220 can be arranged outside the air outlet 221 for sucking out the air in the anti-oxidation sealed box 22; In the anti-oxidation sealed box 22.

As can be seen from the foregoing description, after the present invention utilizes ozone to sterilize articles, it can utilize the deozone filter 24 to quickly and effectively remove ozone, thereby the present invention can adopt higher ozone concentration to carry out the articles in the aseptic purification fresh-keeping device 20 Sterilization to obtain better bactericidal effect.

The present invention preferably uses a high-concentration ozone generator 26 to supply high-concentration ozone to the anti-oxidation sealed box 22 . In a preferred embodiment of the present invention, the ozone generator 26 is further configured to supply ozone into the anti-oxidation sealed box 22 to keep the ozone concentration in the anti-oxidation sealed box 22 above the first set threshold within a preset time. The first set threshold can generally be set at a higher concentration to more effectively sterilize.

In a further preferred embodiment, the first set threshold is 40ppm. Ozone is sterilized at a concentration above 40ppm, which can kill all kinds of germs and bacteria without dead ends, degrade stubborn pesticide residues, and remove odorous gases. The aforementioned preset time can be 5-15 minutes, preferably 10 minutes, and bacteria can be completely eliminated in 10 minutes of ozone sterilization at a concentration of 40 ppm.

Those skilled in the art can understand that relevant settings can be made on the ozone generator 26 to maintain the ozone concentration in the anti-oxidation sealed box 22 above 40ppm, which is easily realized by those skilled in the art and will not be repeated here.

In particular, the aseptic purification and preservation device 20 of the embodiment of the present invention may further include an ozone concentration sensor 260 for detecting the ozone concentration in the anti-oxidation sealed box 22 . The fan 220 can be further configured to shut down when the ozone concentration in the anti-oxidation sealed box 22 drops below the second set threshold after the ozone generator 26 is shut down; wherein the second set threshold is less than the first set threshold; And the air inlet damper 292 and the air outlet damper 291 are configured to close the air inlet 222 and the air outlet 221 when the fan 220 is shut down.

The second set threshold can generally be set to a lower concentration, and the lower the concentration, the safer it is for the user. In some embodiments, the second set threshold is 0.05 ppm. That is, when the ozone concentration in the anti-oxidation sealing box 22 dropped below 0.05ppm, the blower fan 220 was turned off, the air inlet 222 and the air outlet 221 were closed, and the removal of the ozone in the anti-oxidation sealing box 22 was stopped, so that the user opened the access port will not be harmed by ozone.

The present invention also provides a sterilizing method for sterilizing items in the aseptic purification and preservation device 20 . Fig. 4 is a schematic flowchart of a sterilization method according to an embodiment of the present invention. As shown in Fig. 4, the sterilization method includes at least step S402, step S404 and step S406.

Step S402, closing the air inlet 222 and the air outlet 221 of the anti-oxidation sealing box 22, so that the anti-oxidation sealing box 22 is isolated from the external environment.

Step S404, turn on the ozone generator 26, and supply ozone to the anti-oxidation sealed box 22, so that the ozone concentration in the anti-oxidation sealed box 22 is maintained above the first set threshold, so as to sterilize the articles in the anti-oxidation sealed box 22 . Preferably, the first set threshold is 40ppm.

Step S406, when the ozone generator 26 is turned on for a set time and then turned off. Those skilled in the art can understand that during the set time when the ozone generator 26 is turned on, the ozone concentration in the anti-oxidation sealed box 22 should be kept above the first set threshold. Preferably, the setting time is 5-15 minutes, more preferably about 10 minutes.

In a further embodiment, after step S406, the sterilization method according to the embodiment of the present invention may further include: step S408, step S410 and step S412.

Step S408, turn on the fan 220, open the air outlet 221 and the air inlet 222, so that the air in the anti-oxidation sealed box 22 flows out through the air outlet 221, and the air in the external environment flows into the anti-oxidation sealed box through the air inlet 222 22, to utilize the air circulation process to remove the ozone in the anti-oxidation sealing box 22, and prevent bacteria or viruses in the outside air from entering the anti-oxidation sealing box 22 in the wind circulation process, resulting in two items in the anti-oxidation sealing box 22 secondary pollution.

Step S410 , detecting the ozone concentration in the anti-oxidation sealed box 22 .

Step S412, when the ozone concentration in the anti-oxidation sealed box 22 drops below the second set threshold, shut down the fan 220 and close the air inlet 222 and the air outlet 221 . In this way, the user will not be harmed by ozone when opening the access port. The second set threshold is preferably 0.05 ppm.

The sterilizing method of the present invention can use a higher ozone concentration to sterilize the articles in the aseptic purification and preservation device 20, thereby having a better bactericidal effect. After the sterilization is completed, the ozone concentration in the anti-oxidation sealed box 22 can be quickly reduced through air circulation, so as to achieve harmless purification and prevent users from causing harm to users when accessing items; The sterilizing filter 25 at the place keeps the articles in the aseptic purification fresh-keeping device 20 in a sterile environment, preventing secondary pollution of the articles in the anti-oxidation sealed box 22.

Based on the aseptic purification and fresh-keeping device 20 of any one of the foregoing embodiments, the present invention can also provide a refrigerator. Fig. 5 is a schematic structural diagram of a refrigerator 100 according to an embodiment of the present invention. The refrigerator 100 includes a storage compartment and the aseptic purification and fresh-keeping device 20 in any of the foregoing embodiments, and the aseptic purification and fresh-keeping device 20 is arranged in the storage compartment. In some embodiments, the storage room where the aseptic purification and fresh-keeping device 20 is installed is the refrigerator room 10 or the temperature-changing room 30 .

As can be appreciated by those skilled in the art, the refrigerator 100 in the embodiment of the present invention, like the existing refrigerators, may also include an evaporator (not shown in the figure), a compressor (not shown in the figure), a condenser ( not shown in the figure), throttling element (expansion valve or capillary tube) (not shown in the figure), the evaporator is connected to the compressor, condenser, and throttling element through refrigerant piping to form a refrigeration cycle, and the compressor starts Cool down from time to time to provide cooling to the outside.

In some embodiments, the refrigerator 100 may be a direct cooling refrigerator.

In other embodiments of the present invention, the refrigerator 100 may be an air-cooled refrigerator, and the evaporator may be arranged in the air duct for cooling the air passing through it. The refrigerator 100 also includes an air supply duct (not shown in the figure) and a return air duct (not shown in the figure), and the air supply duct is used to transport the air cooled by the evaporator to the storage compartment; The air duct is used to convey the air flowing out of the storage compartment to the evaporator for cooling.

In such an embodiment, referring to FIG. 1 and FIG. 2 , the aseptic purification and preservation device 20 may further include an air inlet pipe 28 and an air outlet pipe 27 . The air inlet pipe 28 has an air outlet end and an air inlet end opposite to the air outlet end. The air outlet end of the air inlet pipe 28 communicates with the air inlet 222. The air in the air duct is introduced into the anti-oxidation sealed box 22 . The air outlet pipe 27 also has an air outlet end and an opposite air inlet end with the air outlet end, the air inlet end of the air outlet pipe 27 communicates with the air outlet 221, and its air outlet end is arranged in the return air duct, so as to pass through the air outlet The air flowing out of 221 is introduced into the return air duct. In such an embodiment, the aseptic purification and fresh-keeping device 20 may not have a separate fan 220 , but utilizes a fan (not shown in the figure) in the air duct of the refrigerator 100 to realize the air circulation in the anti-oxidation sealed box 22 .

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (14)

1. A sterile purification and preservation device, comprising: The anti-oxidation sealed box has an access port for accessing items and a cover for sealing the access port. The anti-oxidation sealed box also has independent air inlets and air outlets, wherein the inlet The tuyere is configured to introduce air outside the anti-oxidation sealed box into the anti-oxidation sealed box, and the air outlet is configured to discharge the air in the anti-oxidation sealed box to the outside of the anti-oxidation sealed box; an ozone generator configured to supply ozone into the anti-oxidation sealed box to sterilize the items in the anti-oxidation sealed box; a sterilizing filter, arranged at the air inlet, for sterilizing the air passing through it; and The deozone filter is arranged at the air outlet and is used for removing ozone in the air flowing through it. 2. The aseptic purification and preservation device according to claim 1, wherein The sterilizing filter is a filter screen filled with silver-loaded cordierite; The deozone filter is a filter screen filled with a molecular sieve ozone catalyst. 3. The aseptic purification and preservation device according to claim 1, wherein The air inlet and the air outlet are respectively provided with an air inlet door and an air outlet door, and the air inlet door and the air outlet door are configured as follows: When the ozone generator is opened to supply ozone to the anti-oxidation sealed box, close the air inlet and the air outlet; Open the air inlet and the air outlet when the ozone generator is shut down. 4. The aseptic purification and preservation device according to claim 3, further comprising: The blower is configured to be turned on when the ozone generator is shut down, so that the ozone-containing gas in the anti-oxidation sealed box flows out of the anti-oxidation sealed box after the ozone is removed by the deozone filter, and the The air outside the anti-oxidation sealed box flows into the anti-oxidation sealed box after being sterilized by the sterilization filter. 5. The aseptic purification and preservation device according to claim 4, wherein The ozone generator is further configured to supply ozone into the anti-oxidation sealed box to keep the ozone concentration in the anti-oxidation sealed box above a first set threshold within a preset time. 6. The aseptic purification and preservation device according to claim 5, wherein The preset time is 5-15min; The first set threshold is 40ppm. 7. The aseptic purification and preservation device according to claim 5, further comprising: An ozone concentration sensor for detecting the ozone concentration in the anti-oxidation sealed box; The fan is further configured to shut down when the ozone concentration in the anti-oxidation sealed box drops below a second set threshold after the ozone generator is shut down, wherein the second set threshold is less than the first a set threshold; and The air inlet door and the air outlet door are configured to close the air inlet and the air outlet when the fan is shut down. 8. The aseptic purification and preservation device according to claim 7, wherein The second set threshold is 0.05ppm. 9. The aseptic purification and preservation device according to claim 1, wherein The anti-oxidation sealed box is made of stainless steel. 10. A sterilizing method for sterilizing the articles in the aseptic purification and fresh-keeping device according to any one of claims 1-9, the sterilizing method comprising: Close the air inlet and the air outlet of the anti-oxidation sealed box; Turn on the ozone generator, supply ozone into the anti-oxidation sealed box so that the ozone concentration in the anti-oxidation sealed box remains above the first set threshold, so as to treat the articles in the anti-oxidation sealed box sterilization; When the ozone generator is turned on for a set time, it is turned off. 11. The sterilization method according to claim 10, after shutting down the ozone generator, also comprising: Turn on the fan of the aseptic purification and preservation device, and open the air outlet and the air inlet; Detect the ozone concentration in the anti-oxidation sealed box; When the ozone concentration in the anti-oxidation sealed box drops below the second set threshold, shut down the fan and close the air inlet and the air outlet. 12. The sterilization method according to claim 11, wherein The first set threshold is 40ppm; The second set threshold is 0.05ppm; The setting time is 5-15min. 13. A refrigerator comprising: storage compartments; and The aseptic purification and preservation device according to any one of claims 1-9, which is arranged in the storage compartment. 14. The refrigerator according to claim 13, further comprising: an evaporator, which cools the air passing through it; an air supply duct for delivering the air cooled by the evaporator to the storage compartment; and a return air duct, used to deliver the air flowing out of the storage compartment to the evaporator for cooling; The aseptic purification and preservation device also includes: An air inlet pipe, one end of which communicates with the air inlet, and the other end is arranged in the air supply duct, so as to introduce the air in the air supply duct into the anti-oxidation sealed box; and One end of the air outlet pipe communicates with the air outlet, and the other end is arranged in the return air duct, so as to introduce the air flowing out through the air outlet into the return air duct.