WO2012128208A1

WO2012128208A1 - Refrigeration storage unit

Info

Publication number: WO2012128208A1
Application number: PCT/JP2012/056863
Authority: WO
Inventors: 佐藤　元彦
Original assignee: 株式会社ＭＡＲＳＣｏｍｐａｎｙ
Priority date: 2011-03-18
Filing date: 2012-03-16
Publication date: 2012-09-27
Also published as: KR101489489B1; KR20130120510A; JP5716211B2; JP2012197965A; CN103403479A; CN103403479B

Abstract

A refrigeration storage unit (1) has: an outer casing (2); an inner casing (3) that is provided on the inside of the outer casing (2), and houses containers (B) filled with a liquid beverage (L); a flow path (4) formed between the outer casing (2) and the inner casing (3); a refrigeration means (5) that refrigerates the chilled air in the flow path (4); an outlet (6) that is formed at the bottom of the inner casing (3), and through which the chilled air in the flow path (4) that has been refrigerated by the refrigeration means (5) is blown into the inner casing (3); a suction port (7) that is formed at the top of the inner casing (3), and through which the chilled air in the inner casing (3) is drawn toward the interior of the flow path (4); and a circulation means (8) that circulates the chilled air in the flow path (4) and the inner casing (3).

Description

Refrigerator

The present invention relates to a refrigerator for supercooling liquid beverages such as beverages containing alcohol, teas, and coffees.

As a refrigerator that can store a container in which a liquid beverage is placed at a temperature below the freezing point of the liquid and in a supercooled state in which the liquid beverage is kept unfrozen, for example, a cooling device described in Patent Document 1 is provided. Are known.

The cooling device of Patent Document 1 has a cooler for storing a container and a control means for controlling the temperature in the cooler. And such a cooling device cools a container with the cold air in a refrigerator by controlling the temperature in a refrigerator with a control means in the state where the container was stored in a refrigerator, and the liquid drink in a container is made. Make it supercooled.

However, Patent Document 1 does not disclose the configuration of the refrigerator that houses the container. In order to bring a liquid beverage into a supercooled state, temperature control (temperature management) of the liquid beverage (container) is very important. Specifically, it is necessary to cool the liquid beverage (container) at a substantially uniform temperature from the entire circumference so that a large temperature difference does not occur in the liquid.

Therefore, in the cooling device of Patent Document 1 in which the configuration of the refrigerator is unknown, it is difficult to make the liquid beverage in a supercooled state.

If a commonly known refrigerator such as a refrigerator or freezer is used, the flow of cold air may be uneven, or a relatively large temperature may occur near the inner wall of the refrigerator and near the center. Therefore, the temperature in the refrigerator becomes non-uniform. Therefore, depending on the installation position of the container and the shape of the container, it becomes difficult to cool the container uniformly throughout, and the liquid beverage in the container cannot be brought into a supercooled state.

JP-A-10-9739

An object of the present invention is to provide a refrigerator capable of bringing a liquid contained in a container into a supercooled state with a simple configuration.

To achieve the above object, the present invention comprises an outer casing,
An inner casing that is provided inside the outer casing and houses a container containing a liquid;
A flow path formed between the outer casing and the inner casing;
Cooling means for cooling the cool air in the flow path;
A first through hole formed at the bottom of the inner casing and communicating the flow path and the inside of the inner casing;
A second through-hole formed in a portion facing the bottom of the upper part of the inner casing and communicating the flow path and the inner side of the inner casing;
The cold air in the flow path cooled by the cooling means is blown into the inner casing from one of the first through hole and the second through hole, and from the other, the cold air in the inner casing is blown into the flow path. Circulation means for circulating the cold air in the flow path and the inner casing so as to be sucked in,
The cold air cooled by the cooling means is circulated by the circulation means in a state where the container is accommodated in the inner casing, so that the container is at a temperature below the freezing point of the liquid and the liquid is not frozen. It is the refrigerator characterized by storing in the supercooled state which maintains.

In the refrigerator of the present invention, the first through hole is a blow-out port from which the cold air blows into the inner casing,
The second through hole is preferably a suction port for sucking the cold air in the inner casing into the flow path.

In the refrigerator of the present invention, it is preferable that the area of the suction port is larger than the area of the outlet.

In the refrigerator of the present invention, the air outlet is formed over the entire bottom portion,
The suction port is preferably formed over the entire upper portion.

In the refrigerator of the present invention, it is preferable that the cooling means has a refrigerant pipe embedded in the outer casing.

In the refrigerator of the present invention, it is preferable that the refrigerant pipe is in contact with the inner wall of the outer casing.

In the refrigerator of the present invention, it is preferable that the inner wall of the outer casing is made of a metal material.

In the refrigerator according to the present invention, the cooler includes a support member that is provided between the outer casing and the inner casing and supports the inner casing with respect to the outer casing, and the support member is generated in the outer casing. It is preferably made of a vibration isolating material that absorbs vibration.

In the refrigerator of the present invention, it is preferable that the circulating means has a fan provided in the flow path.

In the refrigerator of the present invention, when the temperature of the highest temperature part of the liquid is Tmax and the temperature of the lowest temperature part is Tmin, the liquid is below the freezing point of the liquid, The liquid is preferably cooled so that Tmax−Tmin satisfies 0.1 ° C. or less.

FIG. 1 is a schematic overall view showing a preferred embodiment of the refrigerator of the present invention. FIG. 2 is a schematic cross-sectional view of the refrigerator shown in FIG. FIG. 3 is a front view of the refrigerator shown in FIG.

Hereinafter, preferred embodiments of the refrigerator of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic overall view showing a preferred embodiment of the refrigerator of the present invention, FIG. 2 is a schematic sectional view of the refrigerator shown in FIG. 1, and FIG. 3 is a front view of the refrigerator shown in FIG. It is. In the following description, the upper side in FIGS. 1 to 3 is referred to as “upper” and the lower side is referred to as “lower”.

As shown in each figure, the refrigerator 1 includes an outer casing 2, an inner casing 3 that is provided inside the outer casing 2, and stores a container B containing a liquid beverage (liquid) L; The flow path 4 formed between the inner casing 3, the cooling means 5 for cooling the gas in the flow path 4, and the gas in the flow path 4 formed in the inner casing 3 and cooled by the cooling means 5 ( Cold air) is blown out into the inner casing 3, formed in the inner casing 3, and the suction port 7 for sucking the gas in the inner casing 3 into the flow path 4 and the cold air are circulated in the flow path 4 and the inner casing 3. Circulating means 8 for supporting the inner casing 3 with respect to the outer casing 2 is provided.

Such a refrigerator 1 circulates the gas cooled by the cooling means 5 with the circulation means 8 in a state where the container B is accommodated in the inner casing 3, so that the temperature of the container B is not higher than the freezing point of the liquid beverage L. And it is a refrigerator which can be preserve | saved in the supercooled state in which the liquid drink L maintains unfrozen.

The supercooled liquid beverage L that remains unfrozen below the freezing point is instantly frozen into a sherbet when taken out of the refrigerator 1 and subjected to vibrations or poured into a cup or the like.

The liquid beverage L is not particularly limited. For example, soft drinks such as teas (oolong tea, green tea, barley tea, etc.), coffees, mineral water, sports drinks, lactic acid beverages (milk, etc.), sparkling wine, beer, Examples include alcoholic beverages such as wine, sake and shochu. The freezing point of the soft drink as described above is about −9 to −4 ° C., and the freezing point of the alcoholic beverage is about −15 to −12 ° C.

The capacity of the container B is not particularly limited, but is preferably 80 to 1000 ml, and more preferably 100 to 600 ml. By setting it as such a capacity | capacitance, since the temperature difference in the liquid beverage L which generate | occur | produces at the time of cooling can be made small, the liquid beverage L can be made into a supercooled state more reliably.

In the refrigerator 1, Tmax−Tmin satisfies 0 to 0.1 ° C. or less, where Tmax is the temperature of the highest temperature portion of the liquid beverage L in the container B and Tmin is the temperature of the lowest temperature portion. Thus, it is preferable to cool the container B, and it is more preferable to cool the container P so that Tmax−Tmin satisfies 0 to 0.05 ° C. or less. Thereby, the liquid drink L can be made into a supercooled state more reliably.

Note that when the temperature of the liquid beverage L is equal to or lower than the freezing point of the liquid beverage L, the container B may be cooled so that the temperature difference in the liquid beverage L hardly occurs. When the freezing point is higher, a relatively large temperature difference (for example, about 1 to 2 ° C.) may occur in the liquid beverage L.

As shown in FIG. 1, the outer casing 2 is open at the front. Specifically, the outer casing 2 includes a main body 21 having an opening on the front surface, and a door 22 that is provided so as to be rotatable with respect to the main body 21 and that can open and close the opening.

As shown in FIG. 2, the main body 21 has an outer wall 211 and an inner wall 212, and has a structure in which a heat insulating material 213 is filled therebetween. In addition, a refrigerant pipe 51 included in the cooling means 5 is embedded in the main body 21. Further, the main body 21 is provided with a machine room 214, and various machines necessary for driving the refrigerator 1 are accommodated in the machine room 214. Examples of such machinery include a power source, an evaporator 53, a compressor 54, and a condenser 55 included in the cooling unit 5.

The outer wall 211 can be made of various plastics, for example. Examples of the plastic include polyolefin such as polyethylene, polypropylene, and ethylene-propylene copolymer, polyvinyl chloride, polystyrene, polyamide, polyimide, polycarbonate, poly- (4-methylpentene-1), ionomer, acrylic resin, Polyesters such as polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyethylene terephthalate (PET), polybutylene terephthalate (PBT) , Polyether, polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, policer Phon, polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride, other fluororesins, epoxy resins, phenol resins, urea resins, melamine resins, silicone resins, Examples thereof include polyurethane and the like, and copolymers, blends, polymer alloys and the like mainly containing these, and one or more of them can be used in combination.

The inner wall 212 is preferably made of a material having high thermal conductivity. Thereby, as will be described later, the cool air (air) in the flow path 4 can be efficiently and uniformly cooled. Examples of such materials include nickel, cobalt, gold, platinum, silver, copper, manganese, aluminum, magnesium, zinc, lead, tin, titanium, tungsten, and other metals, stainless steel (for example, SUS303, SUS304, SUS316, SUS316L, SUS316J1, SUS316J1L, SUS318, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F, SUS302, etc.).

The heat insulating material 213 is not particularly limited, and examples thereof include porous materials such as foams and various ceramics.

The inner casing 3 is installed in the outer casing 2 having such a configuration, and the container B is stored in the inner casing 3. The front side of the inner casing 3 is open, and the container B can be easily stored in the inner casing 3 when the door 22 of the outer casing 2 is opened.

The size of the internal space of the inner casing 3 is not particularly limited, but for example, the length × width × depth may be about 30 to 50 cm × 30 to 50 cm × 30 to 50 cm. By setting it as such a size, the inner space of the inner casing 3 can be made an appropriate size, the temperature variation in each part in the inner casing 3 is reduced, and the liquid beverage L is cooled in a more stable state. can do. Thereby, the liquid drink L can be made into a supercooled state more reliably.

Here, as described above, in order to bring the liquid beverage L into a supercooled state, the container B is cooled at a substantially uniform temperature from the entire circumference so that a large temperature difference does not occur in the liquid beverage L. Is important. Therefore, the liquid beverage L can be more reliably brought into a supercooled state by reducing the temperature variation at each part in the inner casing 3. The temperature difference between the highest temperature part and the lowest temperature part in the inner casing 3 is preferably about 1 ° C. or less. If it falls within such a temperature difference, the liquid beverage L can be more reliably brought into a supercooled state.

The inner casing 3 is provided in a non-contact manner with respect to the outer casing 2. In the present embodiment, the inner casing 3 is fixed to the outer casing 2 via a plurality of support members 9. The number and installation positions of the support members 9 are not particularly limited as long as the inner casing 3 can be supported with respect to the outer casing 2.

Each support member 9 is made of a vibration isolating material that absorbs vibration. By adopting such a configuration, vibrations generated in the outer casing 2 (for example, vibrations generated by opening and closing the door 22 and vibrations generated by driving various machines housed in the machine room 214) are generated. It becomes difficult to be transmitted to. The supercooled state of the liquid beverage L is easily broken by vibration or the like, and the liquid beverage L is thereby frozen. Therefore, the supercooled state of the liquid beverage L can be more reliably maintained by adopting a structure in which vibration is not easily transmitted to the inner casing 3 as in the present embodiment.

The structure of the support member 9 is not particularly limited as long as the function can be exhibited. For example, as shown in FIG. 3, a metal plate 93 is interposed between a pair of

rubber members

91 and 92. be able to. With this configuration, the support member 9 can more effectively absorb the vibration generated in the outer casing 2. Further, as the support member 9, a known vibration absorbing gel or the like may be used.

The inner casing 3 is preferably made of a material having a high thermal conductivity (for example, a material having a thermal conductivity of 50 W / (m · k) or more). Thereby, the variation of the temperature in each site | part in the inner side casing 3 can be made smaller. The material having high thermal conductivity described above is not particularly limited, and examples thereof include the same material as the constituent material of the inner wall 212 described above.

Further, a blower outlet 6 is formed on the bottom surface (bottom) of the inner casing 3, and cold air is blown out from the blower outlet 6 into the inner casing 3. A suction port 7 is formed on the upper surface (upper part) of the inner casing 3, and cool air in the inner casing 3 is sucked from the suction port 7.

The air outlet 6 and the air inlet 7 are formed so as to face each other up and down via the internal space of the inner casing 3, whereby cold air can flow from the lower side to the upper side in the inner casing 3. Therefore, for example, it is prevented that cold air flows and stays downward due to natural convection, and variations in temperature at each part in the inner casing 3 can be further reduced.

In the present embodiment, the air outlet 6 includes a plurality of through holes (first through holes) 61 that communicate the inside of the inner casing 3 and the flow path 4. Further, the plurality of through holes 61 are uniformly formed over almost the entire bottom surface of the inner casing 3. The plurality of through holes 61 have a relatively small opening area and are formed at a narrow pitch. Thereby, cold air can be uniformly fed into the whole area in the inner casing 3 through the air outlet 6. Therefore, the temperature variation in each part in the inner casing 3 can be further reduced.

The opening area (cross-sectional area) of the through hole 61 is not particularly limited, but is preferably about 1 to 10 mm ² . Further, the pitch of the through holes 61 (the distance between adjacent through holes 61) is preferably about 1 to 5 mm. Thereby, the above effect becomes more remarkable.

Further, the suction port 7 is composed of a plurality of through holes (second through holes) 71 that communicate the inside of the inner casing 3 and the flow path 4. The plurality of through holes 71 are formed uniformly over substantially the entire upper surface of the inner casing 3. The plurality of through holes 71 have a relatively small opening area and are formed at a narrow pitch. The opening area and pitch of the through holes 71 are the same as those of the through holes 61 described above. By setting it as such a structure, the cold air in the inner side casing 3 can be uniformly sucked in via the inlet port 7. Therefore, for example, there is no cool air remaining in the inner casing 3 for a long time, and the temperature variation at each part in the inner casing 3 can be further reduced.

Moreover, it is preferable that the area where the suction port 7 is formed is wider than the area where the air outlet 6 is formed. Thereby, in the inner casing 3, the flow of cold air from the lower side to the upper side can be generated more smoothly. Therefore, for example, there is no cool air remaining in the inner casing 3 for a long time, and the temperature variation at each part in the inner casing 3 can be further reduced.

As shown in FIG. 2, a placement shelf 31 on which the container B is placed is provided in the inner casing 3. The mounting shelf 31 is designed so as not to obstruct the flow of cool air in the inner casing 3 as much as possible.

In the present embodiment, a plurality of mounting shelves 31 are provided in which a plurality of (two) members 311 having a substantially “Y” shape when viewed from the front surface of the inner casing 3 are arranged in the depth direction of the inner casing 3. Yes. In such a mounting shelf 31, the container B can be stably stored in the inner casing 3 by placing the container B on the top thereof.

As described above, since the container B is laid and stored, the cold air positively contacts the side surface of the container B, so that the contact area of the container B with the cold air can be further increased. Therefore, the container B can be cooled uniformly from the surroundings, and the liquid beverage L can be more easily brought into a supercooled state.

Moreover, according to the mounting shelf 31 of this embodiment, since the fixed number of containers B are accommodated in the fixed place in the inner casing 3, for example, setting of cooling conditions (cold air temperature, flow velocity, etc.) Can be done easily. Therefore, the liquid beverage L can be brought into a supercooled state more reliably.

Further, the mounting shelf 31 is designed such that the container B is separated from the air outlet 6 to some extent. In the immediate vicinity of the air outlet 6, there are a portion where the cool air is blown and a portion where the cold air is not directly blown, and a portion where the cold air is not blown directly. Since such a region is a region in which temperature unevenness is relatively likely to occur, the liquid beverage L can be more reliably brought into a supercooled state by storing the container B while avoiding such a region.

The separation distance between the air outlet 6 and the container B (the container B closest to the air outlet 6) is about 5 to 10 cm, although it varies depending on the configuration of the air outlet 6 and the amount and speed of the cool air to be blown out. Is preferred. If the numerical values are separated from each other, the plurality of cold air flows blown out from the respective through holes 61 are merged into one large cold air flow, so that the liquid beverage L can be uniformly cooled, and more A supercooled state can be ensured.

As shown in FIG. 2, a cold air flow path 4 is formed between the inner casing 3 and the outer casing 2 (main body 21) having the above-described configuration. The flow path 4 guides the cold air sucked from the suction port 7 to the blowout port 6. The thickness of the flow path (the separation distance between the inner casing 3 and the outer casing 2) T is not particularly limited, but is preferably 10 cm or less, and more preferably 5 cm or less. Thereby, the cool air can be cooled by the cooling means 5 without unevenness.

Further, in the middle of the flow path 4, there is a circulation means 8 for circulating cold air in the flow path 4 and the inner casing 3. The circulation means 8 has

fans

81 and 82 provided in the flow path 4, and these

fans

81 and 82 cause the air outlet 6 -inside the casing 3 -the suction port 7 -the flow path 4 -the air outlet 6. Cool air is circulated in the order. As a result, a flow of cold air is generated in which cold air is blown out from the outlet 6 and the blown out cold air is sucked in from the suction port 7.

The speed (flow velocity) of the flow of cool air generated by the

fans

81 and 82 is not particularly limited, but is preferably about 0.01 to 2.0 m / second in the vicinity of the air outlet 6, It is more preferably about 0.5 m / sec. By setting the flow rate of the cold air in such a range, it is possible to sufficiently shorten the time during which the cold air blown from the outlet 6 is located in the inner casing 3 and to make the flow of the cold air gentle. . As a result, the temperature variation in each part in the inner casing 3 can be more reliably reduced.

The cool air sucked into the flow path 4 from the suction port 7 by the

fans

81 and 82 is cooled by the cooling means 5 and then blown out into the inner casing 3 from the blowout port 6.

As shown in FIG. 2, the cooling means 5 includes a refrigerant pipe 51 embedded in the main body 21 of the outer casing 2, an evaporator 53, a compressor 54, and a condenser 55 housed in the machine room 214. . The evaporator 53 and the compressor 54, and the compressor 54 and the condenser 55 are respectively connected by a refrigerant pipe 51, and the refrigerant pipe 51 is filled with a refrigerant.

Such a cooling means 5 is configured to cool the cold air in the flow path 4 by exchanging heat between the inside and the outside of the flow path 4. That is, the cooling means 5 is configured such that the refrigerant filled in the refrigerant pipe 51 takes heat in the flow path 4 in the evaporator 53, is compressed in the compressor 54, and is discharged to the outside air in the condenser 55. The cool air in the flow path 4 is configured to be cooled.

Thus, by cooling the cool air in the flow path 4 by the cooling means 5 and cooling the inside casing 3 using the cooled cool air, each part in the inner casing 3 is cooled uniformly. It is possible to reduce the variation in temperature at each part in the inner casing 3.

Here, the refrigerant pipe 51 is preferably in contact with the inner wall 212 of the outer casing 2. Thereby, heat exchange can be efficiently performed between the refrigerant flowing in the refrigerant pipe 51 via the inner wall 212 and the cold air flowing in the flow path 4. As described above, since the inner wall 212 is made of a material having high thermal conductivity (for example, aluminum), the heat exchange as described above can be performed efficiently. Moreover, since the whole area of the inner wall 212 is cooled evenly by the refrigerant, heat exchange can be performed evenly for the cold air flowing through the flow path 4. That is, it is possible to generate cool air with no unevenness in temperature and to blow the generated cool air into the inner casing 3 from the outlet 6. Therefore, the temperature variation in each part of the inner casing 3 is reduced, and the liquid beverage L can be cooled in a more stable state. Thereby, the liquid drink L can be made into a supercooled state more reliably.

Particularly in this embodiment, since the refrigerant pipe 51 is disposed on the upper surface portion 21a, the back surface portion 21b, and the bottom surface portion 21c of the main body 21, the cold air can be cooled in almost the entire area of the flow path 4. Therefore, it is possible to generate cool air with no temperature unevenness. In addition, as arrangement | positioning of the refrigerant | coolant piping 51, if the cool air in the flow path 4 can be cooled, it will not specifically limit, For example, you may arrange | position only to the back part 21b. Moreover, it is not necessary to embed in the main body 21, and it may be exposed in the flow path 4.

For example, when the liquid beverage L is an alcoholic beverage, the cooling means 5 cools the cold air so that the temperature in the inner casing 3 is about −15 to −12 ° C. When the liquid beverage L is a soft drink, the cool air is cooled so that the temperature in the inner casing 3 is about −9 to −4 ° C. Note that the cooling unit 5 includes, for example, a temperature detection unit that detects the temperature in the inner casing 3, and is configured to adjust the cooling degree of the cool air based on the detection result of the temperature detection unit. Good.

As mentioned above, although the refrigerator of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this. For example, in the refrigerator of the present invention, the configuration of each part can be replaced with any configuration that exhibits the same function, and any configuration can be added.

In the above-described embodiment, the structure in which the air outlet is formed on the bottom surface of the inner casing and the suction port is formed on the upper surface has been described. However, the present invention is not limited thereto, and the suction port is formed on the bottom surface of the inner casing. An air outlet may be formed.

Further, the configuration of the cooling means is not limited to the above-described embodiment, and for example, an air blast method may be adopted.

Further, the liquid contained in the container is not limited to soft drinks and alcoholic drinks, and may be liquids other than beverages such as soapy water, disinfecting liquid, liquid detergent, preservative liquid, and chemical liquid.

According to the present invention, it is possible to provide a refrigerator capable of bringing a liquid contained in a container into a supercooled state with a simple configuration. Specifically, since the flow of cold air can be generated from the air outlet located below to the air inlet located above, it is possible to prevent the precipitation of cold air due to natural convection, etc. Variations in temperature at each part can be reduced. In addition, instead of directly cooling the inside of the inner casing, by cooling the inside of the inner casing by blowing out the cool air cooled in the flow path from the outlet, the temperature of each part in the inner casing can be reduced. Variations can be reduced. Thereby, since a container can be cooled uniformly over the whole, the liquid put into the container can be reliably made into a supercooled state. Therefore, it has industrial applicability.

Claims

An outer casing;
An inner casing that is provided inside the outer casing and houses a container containing a liquid;
A flow path formed between the outer casing and the inner casing;
Cooling means for cooling the cool air in the flow path;
A first through hole formed at the bottom of the inner casing and communicating the flow path and the inside of the inner casing;
A second through-hole formed in a portion facing the bottom of the upper part of the inner casing and communicating the flow path and the inner side of the inner casing;
The cold air in the flow path cooled by the cooling means is blown into the inner casing from one of the first through hole and the second through hole, and from the other, the cold air in the inner casing is blown into the flow path. Circulation means for circulating the cold air in the flow path and the inner casing so as to be sucked in,
The cold air cooled by the cooling means is circulated by the circulation means in a state where the container is accommodated in the inner casing, so that the container is at a temperature below the freezing point of the liquid and the liquid is not frozen. The refrigerator is characterized by being stored in a supercooled state for maintaining the temperature.
The first through hole is a blowout port from which the cold air blows into the inner casing,
2. The refrigerator according to claim 1, wherein the second through hole is a suction port that sucks the cold air in the inner casing into the flow path.
3. The refrigerator according to claim 2, wherein an area of the suction port is larger than an area of the air outlet.
The outlet is formed over the entire bottom,
The refrigerator according to claim 2, wherein the suction port is formed over the entire upper portion.
The cooling device according to claim 1, wherein the cooling means has a refrigerant pipe embedded in the outer casing.
The refrigerator according to claim 5, wherein the refrigerant pipe is in contact with an inner wall of the outer casing.
The refrigerator according to claim 5, wherein the inner wall of the outer casing is made of a metal material.
A vibration isolating material provided between the outer casing and the inner casing and having a support member that supports the inner casing with respect to the outer casing, and the support member absorbs vibration generated in the outer casing. The refrigerator of Claim 1 comprised by these.
2. The refrigerator according to claim 1, wherein the circulating means has a fan provided in the flow path.
When the temperature of the highest temperature part of the liquid is Tmax and the temperature of the lowest temperature part is Tmin, Tmax−Tmin is 0.1 when the liquid is below the freezing point of the liquid. The refrigerator according to claim 1, wherein the liquid is cooled so as to satisfy a temperature equal to or lower than ° C.