JP3655950B2 - refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a refrigerator technology capable of completely sterilizing a wall surface in a warehouse, circulating air, and the surface of food, and storing food hygienically and freshly.
[0002]
[Prior art]
In recent years, as a means for keeping the inside of a refrigerator hygienic, as disclosed in JP-A-6-73196, means for containing an inorganic antibacterial agent by silver or a silver compound in a plastic molded body of a food container Has been proposed.
[0003]
The conventional refrigerator will be described below.
FIG. 10 is a cross-sectional view of a conventional refrigerator-freezer, which includes a freezer compartment 2, a refrigerator compartment 3, an ice temperature chilled compartment 4, a refrigerated chilled compartment 5, and a vegetable compartment 6 inside the main body 1 of the refrigerator-freezer. The ice temperature chilled chamber 4 has an ice temperature chilled case 7 for storing food, and the refrigerated chilled chamber 5 similarly has a refrigerated chilled case 8.
[0004]
Further, a cooler 9 and a fan 10 for circulating cold air are provided on the back side of the freezer compartment 2. Reference numeral 11 is a temperature adjusting damper for distributing cold air, 12 is a ventilation path provided on the back of the refrigerator, and 13 is an inner box.
[0005]
In addition, 0.5 to 5% of an inorganic antibacterial agent made of silver or a silver compound was contained in plastic molded bodies such as the ice temperature chilled case 7, the refrigerated chilled case 8, and the inner box 13.
[0006]
Therefore, mold and bacteria microorganisms brought into the food can be cleaned with the antibacterial and antibacterial action of the inorganic antibacterial agent using silver or silver compounds, and the effect of keeping the freshness of stored food can be enhanced. It was a thing.
[0007]
[Problems to be solved by the invention]
However, in the above-described configuration, the surface of the container must be molded unless the inorganic antibacterial agent such as silver or a silver compound oozes out on the surface of the plastic molded body such as the ice temperature chilled case 7, the refrigerated chilled case 8, and the inner box 13. Antibacterial action is not obtained. In addition, since the antibacterial agent is a hard inorganic substance even though it is a fine particle, there is a risk of damaging the injection mold of a plastic molded body if the filling amount is large. Since the strength of the molded product such as impact strength tends to be lowered or discolored, the filling amount cannot be increased too much. As is generally known, an inorganic antibacterial agent made of silver or a silver compound can hardly be expected to have an antifungal action even though it has an antibacterial action. Furthermore, even bacteria floating in the cabinet cannot be sterilized actively. Conventionally proposed refrigerators have the above problems.
[0008]
Therefore, the above-described refrigerators described above have problems such as the fact that the antifungal action is small even if the antibacterial action on the surface of the container is present, and the air sterilization inside the refrigerator cannot be performed.
[0009]
In view of the above problems, the present invention provides not only a bactericidal effect on the surface of a food storage container or inner box but also an antifungal effect, enabling sterilization of air in the storage and surface sterilization of food such as stored vegetables, An object of the present invention is to provide a refrigerator that improves the freshness retention effect of stored foods.
[0010]
[Means for Solving the Problems]
In order to solve this problem, the refrigerator of the invention according to claim 1 is: A container in which a sublimable or volatile antibacterial / antifungal agent is sealed is provided, and all or a part of the surface of the container is formed of a gas permeable film, and the antibacterial / antifungal agent is released through the gas permeable film. The gas permeable membrane is a shape memory resin film, and the container is mounted in a warehouse. Is.
[0011]
In the invention according to claim 2, the antibacterial and antifungal agent is an isothiocyanate.
[0012]
In the invention according to claim 3, the antibacterial and antifungal agent is a hinokitiol salt such as hinokitiol or a sodium salt thereof or a cyclodextrin clathrate of hinokitiol.
[0013]
According to a fourth aspect of the present invention, the gas permeable membrane is formed by laminating a polyurethane-based shape memory resin film on at least one surface of a polyester or nylon fiber woven or non-woven fabric.
[0014]
The invention according to claim 5 is: A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed at an inlet of a ventilation path through which return air from the refrigerator compartment to the cooler passes. Is.
[0015]
The invention according to claim 6 is: A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of the defrosting heater. Is.
[0016]
The invention according to claim 7 is A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of a condensation prevention pipe on the front surface of the partition wall of the freezer compartment and the refrigerator compartment. Is.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In the invention according to claim 1, the sublimation property enclosed in a container in a temperature range lower than the glass transition temperature Tg of the shape memory resin film constituting the gas permeable membrane, for example, a temperature range of 5 ° C. to 10 ° C. or less where bacteria are difficult to propagate. Alternatively, in the temperature range where the generation of volatile antibacterial and antifungal agents is low and the temperature is higher than the glass transition temperature Tg, for example, relatively high in temperature, such as 10 ° C. or higher, bacteria are easily sublimated or volatile. Since the generation amount of the antibacterial and fungicidal agent is increased, it is possible to perform a reasonable sterilization, and it is possible to suppress the excessive generation of the antibacterial and antifungal agent and maintain the bactericidal power for a long period of time.
[0018]
Further, in the invention according to claim 2, since the antibacterial and antifungal agent is an isothiocyanate ester, the antibacterial and antifungal properties are superior to conventional inorganic antibacterial agents.
[0019]
In the invention according to claim 3, the antibacterial and antifungal agent is a hinokitiol salt such as hinokitiol or its sodium salt or a cyclodextrin clathrate of hinokitiol. In addition to excellent fungicidal activity, it can suppress respiration of fruits and vegetables and ethylene production.
[0020]
In the invention according to claim 4, since the gas permeable membrane is formed by laminating a polyurethane shape memory resin film on at least one surface of a polyester or nylon fiber woven fabric or nonwoven fabric, the shape memory resin film The strength of is increased.
[0021]
In the invention according to claim 5, in particular, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed at an inlet of a ventilation path through which return air from the refrigerator compartment to the cooler passes. Since it is a thing, while being able to sterilize the air which circulates in the store | warehouse | chamber efficiently, replacement becomes easy.
[0022]
In the invention according to claim 6, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of the defrosting heater. Therefore, it is possible to detect the temperature rise during defrosting operation sensitively and to generate antibacterial and antifungal agents at every defrosting operation. The amount of fungicides generated per unit time is automatically increased, and the amount of fungicides and fungicides generated per unit time can be automatically reduced in winter when the defrosting operation cycle is long. It is possible to control the generation of a fungicidal and fungicidal agent without using a device.
[0023]
In the invention according to claim 7, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of a condensation prevention pipe on the front surface of the partition wall of the freezer compartment and the refrigerator compartment. Therefore, the amount of fungicides and fungicides generated per unit time is automatically increased during the summer when the cooling cycle operation time of the refrigerator is longer, and the fungicides and fungicides are increased during the winter when the cooling cycle operation time is shorter. Since the amount generated per unit time can be automatically reduced, a reasonable antibacterial and fungicidal agent can be generated according to the season, resulting in a long service life and low cost without using a special generation control device. Can be suppressed.
[0024]
Since the present invention exhibits the above-described action, the refrigerator that exhibits the action can be implemented in various forms. The following specific example will be described.
[0025]
【Example】
(Example 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.
[0026]
FIG. 1 shows a cross-sectional view of an essential part of the refrigerator of the present invention.
Reference numeral 14 denotes the refrigerator according to the first embodiment of the present invention, reference numerals 15 and 16 denote freezer compartments and refrigerator compartments formed therein, and reference numerals 17 and 18 denote doors. The cooler chamber 19 behind the freezer chamber 15 has a cooler 20. A fan 21 is provided above the cooler 20, and a glass tube type defrost heater 22 is provided below the cooler 20. A water droplet prevention member 23 is disposed immediately above the defrost heater 22.
[0027]
In addition, on the heat insulating partition wall 24 that partitions the freezer compartment 15 and the refrigerator compartment 16, the return duct 25 from which the air from the refrigerator compartment 15 returns to the cooler compartment 19 and the air from the refrigerator compartment 16 to the cooler compartment 19. A return return duct 26 is provided.
[0028]
The back wall 27 of the freezer compartment 15 is provided with a supply port 28 through which a part of the air cooled by the cooler 20 is supplied to the freezer compartment 15, and cool air is supplied to the refrigerator compartment 16 behind the cooler 20. A supply duct 29 is provided. A sterilizer 30 is attached to the back wall of the refrigerator compartment 16.
[0029]
As shown in FIG. 2, the sterilizer 30 is a container 32 in which a sublimable or volatile antibacterial and antifungal agent 31 is sealed, and a part of the surface of the container 32 is made of a polyurethane-based shape memory resin film. The gas permeable membrane 33 is provided.
[0030]
Moreover, it has the cap 34 in the enclosure port which replaces the antimicrobial agent 31. The antibacterial and antifungal agent 31 is an isothiocyanate extracted from mustard. The antibacterial and antifungal agent 31 may be hinokitiol extracted from Aomori hiba instead of isothiocyanate, hinokitiol salts such as hinokitiol sodium salt, or cyclodextrin clathrate of hinokitiol.
[0031]
About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.
When the refrigerator 14 is cooled, air in the cabinet is circulated through the cooler chamber 19, the freezer chamber 15, and the return duct 25 by the air blowing action of the fan 21, and the cooler chamber 19, the supply duct 29, and the refrigerator. It is circulated through the chamber 16 and the return duct 26.
[0032]
At this time, the circulated air becomes cold air containing the antibacterial and antifungal agent 31 that is slightly volatilized or sublimated through the gas permeable membrane 33 provided in the sterilization apparatus 30, and circulates in the entire chamber. Will be.
[0033]
Next, when the defrosting operation is started, the operation of the cooler 20 and the fan 21 is stopped while the defrosting heater 22 is energized to generate heat. During this time, the temperature in the cabinet rises. Immediately after the defrosting operation for several tens of minutes is completed and the cooling operation is resumed, high-temperature air is circulated through the entire chamber by the fan 21.
[0034]
At this time, the temperature of the sterilizer 30 also rises, so that the amount of the antibacterial / antifungal agent 31 to be vaporized increases, and air having a higher concentration of the antibacterial / antifungal agent 31 is circulated than when stable. Become.
[0035]
Further, the same operation as described above is performed when the door is frequently opened and closed in summer or when the temperature inside the container immediately after storing food with a high product temperature rises.
[0036]
Here, the relationship between the generation amount of the antibacterial / antifungal agent 31 and the temperature of the sterilizer 30 of the present invention will be described with reference to FIG.
[0037]
A curve A in FIG. 3 shows the relationship between the generation amount and temperature when a polyurethane-based shape memory resin film is used as the gas permeable membrane 33, and a curve B is generated when a general resin film such as polyethylene is used. It shows the relationship between quantity and temperature.
[0038]
When the gas permeable membrane 33 is a general resin film, the generation amount of the antibacterial / antifungal agent 31 gradually increases as the temperature rises. On the other hand, when a shape memory resin film is used for the gas permeable membrane 33, there is a temperature region in which the size of the intermolecular void changes rapidly with the glass transition. Point T ₁ And the second bending point T ₂ Appears.
[0039]
That is, compared with a general film, a predetermined temperature T ₁ Thus, the generation amount of the antibacterial and antifungal agent 31 can be rapidly increased. This temperature T ₁ Can be designed to a target temperature by arbitrarily changing the glass transition temperature Tg of the polyurethane-based shape memory resin film.
[0040]
FIG. 4 shows the effect of temperature on the division time of psychrophilic and mesophilic bacteria. The division time of a thermophilic bacterium such as Shademonas which is a causative bacterium such as fish meat is as shown by a curve A in FIG. On the other hand, the division time of mesophilic bacteria such as Escherichia coli is as shown by curve B in FIG. 4 (note that these are described in the Science Forum “Latest Food Microbial Control System Data Collection” published in 1983, etc.) ing).
[0041]
That is, the growth speed of psychrophilic bacteria is faster at 0 ° C. or higher, especially the growth speed is faster from 10 ° C. to 30 ° C., and the growth speed of mesophilic bacteria is higher at 10 ° C. or higher, especially from 20 ° C. to 45 ° C. Growth speed is fast.
[0042]
Furthermore, it is known that molds such as Penicillium genus and Mucor genus can be proliferated sufficiently even at a low temperature of 5 ° C. or lower.
[0043]
Therefore, there are bacteria and molds that are resistant to low temperatures in the refrigerator. Especially when the doors are frequently opened and closed during the defrosting operation of the refrigerator or in the summer, the temperature inside the refrigerator immediately after storing food with high product temperature etc. It rises and promotes the growth of thermophilic bacteria.
[0044]
As described above, according to the present embodiment, the container 32 partially configured with the gas permeable film 33 made of a shape memory resin film as the sterilizer 30 is used as a volatile or sublimable isothiocyanate ester or hinokitiol or its Since the antibacterial and antifungal agent 31 of a hinokitiol salt such as a sodium salt or a cyclodextrin clathrate of hinokitiol is enclosed and this container is mounted on the back wall of the refrigerator compartment 16, When the door is opened and closed frequently in the summer, etc., the temperature inside the freezer compartment 15, refrigerator 16 and vegetable compartment (not shown) below the refrigerator compartment 16 rises immediately after storing food with a high product temperature. When the growth of psychrotrophic bacteria is promoted, when the amount of antibacterial / antifungal agent vapor generated from the antibacterial / antifungal agent 31 is large and the temperature is stable at other low temperatures To reduce the generation amount of Bokinbo mold agents vapor from Bokinbo mold material 31 can be prevented from releasing unnecessarily by.
[0045]
Therefore, unlike the case of using a conventional silver antibacterial agent, it has excellent antifungal properties, and can actively sterilize not only the inner wall surface but also bacteria floating on the surface and food surface adhering bacteria. The action of the gas permeable membrane 33 made of a shape memory resin film is to release the antibacterial and antifungal agent 31 reasonably according to the temperature change in the cabinet, so that the antibacterial and antifungal power can be maintained for a long time. Can be granted.
[0046]
Furthermore, especially when using a salt such as hinokitiol or its sodium salt or a cyclodextrin clathrate of hinokitiol as the antibacterial and antifungal agent 31, the ethylene production of fruits and vegetables such as apples stored in the cabinet is suppressed, It becomes possible to suppress yellowing such as broccoli sensitive to ethylene.
[0047]
Further, the container for encapsulating the antibacterial and antifungal agent 31 may be a gas permeable membrane bag 35 made of a shape memory resin film as shown in FIG. 5, and an inexpensive container can be provided.
[0048]
Further, as shown in the cross-sectional view of FIG. 6, the gas permeable membrane 33 and the gas permeable membrane bag 35 made of the shape memory resin film are woven or coated with an adhesive 37 formed by dot processing on the surface of the shape memory resin film 36. The durability of the shape memory resin film 36 can be improved by laminating fibers 38 such as nonwoven fabric.
[0049]
The gas permeable membrane 33 and the gas permeable membrane bag 35 may be a gas permeable film such as general polyethylene instead of a shape memory resin film. However, it is more reasonable to use a shape memory resin film because the release amount of the antibacterial and antifungal agent 31 can be controlled sensitively to temperature changes.
[0050]
The glass transition temperature Tg of the shape memory resin film is the temperature T shown in FIG. ₁ However, it is designed so that the release amount of the antifungal and antifungal agent vapor from the antifungal and antifungal agent 31 rapidly increases at about 5 to 7 ° C. or higher where the activity of the low temperature bacteria becomes relatively active.
[0051]
(Example 2)
Next, Example 2 will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0052]
The difference from the first embodiment is only the position where the sterilizer is mounted, and the other structures are the same. Therefore, detailed description of the structure is omitted, and the position where the sterilizer is mounted will be described.
[0053]
FIG. 7 shows a cross section of the main part of the refrigerator 39 in the second embodiment. The sterilizer 40 having the same configuration as that described in the first embodiment is attached to the inlet 26 a of the return duct where the air in the refrigerator compartment 16 returns to the cooler chamber 19.
[0054]
The return duct inlet 26a is located near the door 18 above the refrigerating chamber 16, is a position through which relatively high-temperature cold air passes, and is susceptible to the temperature rise due to the opening and closing of the door 18 of the refrigerating chamber 16. .
[0055]
As described above, according to the present embodiment, the sterilizer 40 is attached to the inlet 26a of the return duct where the air in the refrigerator compartment 16 returns to the cooler chamber 19, so that the temperature rise due to opening and closing of the door 18 is more sensitive. The amount of release of the antibacterial and antifungal agent 40a can be controlled.
[0056]
(Example 3)
Next, Example 3 will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. FIG. 8 shows a cross section of the main part of the refrigerator 41 in the third embodiment.
[0057]
A sterilizer 42 is disposed near the defrost heater 22 below the back wall 27 of the freezer compartment 15. Reference numeral 43 denotes a cover provided at a place where the sterilizer 42 is accommodated so that the sterilizer 42 can be easily replaced.
[0058]
As described above, according to the present embodiment, the sterilizer 42 is disposed in the vicinity of the defrost heater 22 below the back wall 27 of the freezer compartment 15, and therefore, the rise in the internal temperature particularly during the defrost operation is used. It is possible to control the release of the antibacterial and antifungal agent 42a. On the other hand, the cycle of the defrosting operation of the refrigerator is generally short in summer and long in winter.
[0059]
Therefore, in summer, when foods are prone to spoilage, the number of times the internal temperature rises due to the defrosting operation is increased, the number of releases of the antibacterial / antifungal agent 42a is automatically increased, and the food has a relatively long shelf life and floats In winter when there are few bacteria, since the frequency | count of a raise of the internal temperature by a defrost operation decreases, the frequency | count of discharge | release of the antifungal / antifungal agent 42a can be decreased automatically.
[0060]
As a result, rational release control can be performed, and the antibacterial and fungicidal agent 42a can be used for a long time without wasteful release of the antibacterial and fungicidal agent 42a.
[0061]
(Example 4)
Next, Example 4 will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. FIG. 9 shows a cross-section of the main part of the refrigerator 44 in the fourth embodiment.
[0062]
The sterilizer 45 is disposed in the vicinity of a condensation prevention pipe 48 provided on the door-side front panel 47 of the partition wall 46 between the freezer compartment 15 and the refrigerator compartment 16. The partition wall 46 is provided with an introduction path 49 for introducing steam generated by the antibacterial and antifungal agent 45a into the return duct 26.
[0063]
The dew condensation prevention pipe 48 is used to prevent dew condensation from occurring around the main body door due to the flow of hot refrigerant gas when the refrigerator 44 is in cooling operation, and the cooling operation time is long. In the summer season, the hot gas flows through the condensation prevention pipe 48 for a long time, and in the winter season when the cooling operation time is shortened, the hot gas flows through the condensation prevention pipe 48 in a short time.
[0064]
As described above, according to the present embodiment, the sterilizer 45 is disposed in the vicinity of the condensation prevention pipe 48 provided on the door-side front panel 47 of the partition wall 46 of the freezer compartment 15 and the refrigerator compartment 16. It is possible to control the release of the antibacterial and antifungal agent 45a using the fact that the hot gas flows through the condensation prevention pipe 48 depending on the season.
[0065]
That is, the time for the vapor of the antibacterial and antifungal agent 45a to circulate throughout the interior of the cabinet through the return duct 26 becomes longer in the summer, and the time becomes shorter in the winter without using a special control device. Naturally rational release control of the antibacterial and antifungal agent 45a can be achieved.
[0066]
Therefore, it is possible to provide an inexpensive steam generation type refrigerator with a sterilization control device that is superior in antibacterial and antifungal properties than the conventional example.
[0067]
【The invention's effect】
As described above, in the refrigerator of the present invention, A container in which a sublimable or volatile antibacterial / antifungal agent is sealed is provided, and all or a part of the surface of the container is formed of a gas permeable film, and the antibacterial / antifungal agent is released through the gas permeable film. The gas permeable membrane is a shape memory resin film, and the container is mounted in a warehouse. Therefore, in a temperature range lower than the glass transition temperature Tg of the shape memory resin film constituting the gas permeable membrane, for example, 5 ° C. to 10 ° C. In a temperature range higher than the glass transition temperature Tg, for example, 10 ° C. or more, where bacteria are relatively easy to grow, sublimation or volatile antibacterial and antibacterial properties enclosed in a container are suppressed. Since the generation amount of the fungicide increases, it is possible to perform a reasonable sterilization, and it is possible to maintain the bactericidal power for a long period of time by suppressing unnecessary excessive generation of the antibacterial and antifungal agent.
[0068]
Further, in the refrigerator according to claim 2, since the antibacterial and antifungal agent is an isothiocyanate, the antibacterial and antifungal power is superior to conventional inorganic antibacterial agents, and the refrigerator is kept hygienic. It is possible to prevent the unpleasant odor in the warehouse due to the propagation of various bacteria, and to improve the hygiene and freshness preservation of the food stored in the warehouse.
[0069]
Further, in the refrigerator according to claim 3, since the antibacterial and antifungal agent is a hinokitiol salt such as hinokitiol or a sodium salt thereof or a cyclodextrin clathrate of hinokitiol, the antibacterial agent compared with the conventional inorganic antibacterial agent The anti-fungal power is excellent, so that the hygiene in the cabinet is improved, and the respiration of fruits and vegetables and the production of ethylene can be suppressed.
[0070]
In the refrigerator according to claim 4, since the gas permeable membrane is a laminate of a polyurethane-based shape memory resin film on at least one surface of a woven or nonwoven fabric of polyester or nylon fibers, Strength increases.
[0071]
In the refrigerator according to claim 5, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed at an inlet of a ventilation path through which return air from the refrigerator compartment to the cooler passes. Since it is a thing, while being able to sterilize the air which circulates in the store | warehouse | chamber efficiently, replacement becomes easy.
[0072]
In the refrigerator according to claim 6, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of the defrosting heater. Therefore, it is possible to detect the temperature rise during defrosting operation sensitively and to generate antibacterial and antifungal agents at every defrosting operation. The amount of fungicides generated per unit time is automatically increased, and the amount of fungicides and fungicides generated per unit time can be automatically reduced in winter when the defrosting operation cycle is long. It is possible to control the generation of a fungicidal and fungicidal agent without using a device.
[0073]
In the refrigerator according to claim 7, A container sealed with a sublimable or volatile antibacterial and antifungal agent, wherein the container is entirely or partially composed of a gas permeable film and the antibacterial and antifungal agent is released through the gas permeable film; The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of a condensation prevention pipe on the front surface of the partition wall of the freezer compartment and the refrigerator compartment. Therefore, the amount of fungicides and fungicides generated per unit time is automatically increased during the summer when the cooling cycle operation time of the refrigerator is longer, and the fungicides and fungicides are increased during the winter when the cooling cycle operation time is shorter. Since the amount of generation per unit time can be automatically reduced, a reasonable antibacterial and fungicidal agent is generated according to the season, so it has a long life and does not require a special generation control device at low cost. Can control mold generation.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of a refrigerator in Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view of a sterilizer according to Embodiment 1 of the present invention.
FIG. 3 is an explanatory diagram showing the relationship between the generation amount of fungicides and fungicides and the temperature in Example 1 of the present invention.
FIG. 4 is an explanatory diagram showing the relationship between the bacterial growth rate and temperature in Example 1 of the present invention.
FIG. 5 is a cross-sectional view of another sterilization apparatus according to Embodiment 1 of the present invention.
FIG. 6 is a partially enlarged sectional view of a gas permeable membrane in Example 1 of the present invention.
FIG. 7 is a cross-sectional view of an essential part of a refrigerator in Embodiment 2 of the present invention.
FIG. 8 is a cross-sectional view of a main part of a refrigerator in Embodiment 3 of the present invention.
FIG. 9 is a cross-sectional view of main parts of a refrigerator in Embodiment 4 of the present invention.
FIG. 10 is a sectional view of a conventional refrigerator
[Explanation of symbols]
15 Freezer room
16 Cold room
20 Cooler
22 Defrost heater
26 Return duct
26a entrance
31 Antibacterial and antifungal agent
32 containers
33 Gas permeable membrane
35 Gas permeable membrane bag
36 Shape memory resin film
38 fibers
40, 42, 45 Sterilizer
40a, 42a, 45a Antibacterial and antifungal agent
46 partition wall
48 Condensation prevention pipe

Claims (7)

A container in which a sublimation or volatile antibacterial and fungicidal agent is sealed is provided, and all or a part of the surface of the container is made of a gas permeable film, and the antibacterial and antifungal agent is released through the gas permeable film. The gas permeable membrane is a shape memory resin film, and the container is mounted in a refrigerator.   The refrigerator according to claim 1, wherein the antibacterial and antifungal agent is an isothiocyanate.   The refrigerator according to claim 1, wherein the antibacterial and antifungal agent is a cyclodextrin inclusion body of hinokitiol, hinokitiol salts or hinokitiol.   The refrigerator according to claim 1, wherein the gas permeable membrane is obtained by laminating a polyurethane-based shape memory resin film on at least one surface of a woven or non-woven fabric of polyester or nylon fibers. A container sealed with a sublimable or volatile antibacterial and fungicidal agent, wherein the container is entirely or partially composed of a gas permeable membrane, and the antibacterial and antifungal agent is released through the gas permeable membrane. The refrigerator according to claim 1 , wherein the gas permeable membrane is a shape memory resin film, and the container is disposed at an inlet of a ventilation passage through which return air from the refrigerator compartment to the cooler passes. A container sealed with a sublimable or volatile antibacterial and fungicidal agent, wherein the container is entirely or partially composed of a gas permeable membrane, and the antibacterial and antifungal agent is released through the gas permeable membrane. A refrigerator in which the gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of a defrosting heater. A container sealed with a sublimable or volatile antibacterial and fungicidal agent, wherein the container is entirely or partially composed of a gas permeable membrane, and the antibacterial and antifungal agent is released through the gas permeable membrane. The gas permeable membrane is a shape memory resin film, and the container is disposed in the vicinity of a dew condensation preventing pipe on the front surface of the partition wall of the freezer compartment and the refrigerator compartment.

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