JP2015010744A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of maintaining freshness of foods over a long period.SOLUTION: A refrigerator 1 includes: a cooling room S2 which cools and stores foods; a cooling part 3 which cools air in the cooling room S2; multiple fans 4 which send the cooling air cooled by the cooling part 3 to the cooling room S2; multiple temperature sensors 5 installed at different locations in the cooling room S2; and a temperature control part 7 which controls driving of the multiple fans 4 on the basis of detection results of the multiple temperature sensors 5.

Description

  The present invention relates to a refrigerator.

  Foods such as seafood, fruits and vegetables (vegetables / fruits), and meat tend to lose their freshness, but it is necessary to maintain freshness for a relatively long period of time, from collection to distribution, store display, and the like. In addition, such foods are favored by customers as having higher freshness. Therefore, it is necessary to display the foods in the store while keeping the freshness.

  Conventionally, attempts have been made to maintain the freshness of food by freezing or refrigeration of the food using a freezer or the like (see, for example, Patent Document 1). However, when the food is frozen, there is a problem that the cell membrane of the food is not destroyed and the taste of the food is lowered. In addition, because temperature control is performed by turning on / off the compressor power supply and controlling the inverter for freezers, refrigerators, etc., there is a large temperature error range and temperature difference in each part of the refrigerator, making it impossible to perform precise temperature adjustment. was there. For this reason, when adjusting to the temperature which does not freeze, temperature may become comparatively high and it was difficult to maintain sufficient freshness. Also, depending on where and how the food is installed, there will be a lot of uneven temperature in each part of the refrigerator, so there is a problem that places that are much higher or lower than the set temperature can be created. .

  In particular, when transporting food while cooling in a refrigerator installed on a truck bed, or when transporting food while cooling in a container with a cooling system loaded on a ship, the arrangement of food in the warehouse, etc. Depending on the case, there is a problem that the cold air is not uniformly transmitted to the inside of the cabinet, and the inside of the cabinet is unevenly cooled. Especially in summer, places where cold air does not reach may reach 20 ° C. or higher, causing food damage.

JP 2010-43763 A

  An object of the present invention is to provide a refrigerator capable of maintaining the freshness of food over a long period of time.

Such an object is achieved by the present invention described below.
(1) a cooling chamber for storing food in cold storage;
A cooling unit for cooling air in the cooling chamber;
A plurality of air blowing sections for sending cooling air cooled by the cooling section to the cooling chamber;
A plurality of temperature detectors installed at different locations in the cooling chamber;
And a control unit that controls driving of the plurality of air blowing units based on detection results of the plurality of temperature detection units.

  (2) The refrigerator according to (1), wherein the control unit controls driving of the plurality of air blowing units so that a difference in temperature detected by the plurality of temperature detection units is within 2.0 ° C. .

(3) When T is the freezing temperature of the food,
The said control part is a refrigerator as described in said (1) or (2) which controls the drive of these several ventilation parts so that the temperature of the said cooling chamber may be T-1.0 degreeC-T + 2.0 degreeC. .

(4) The food is fruit and vegetables,
When the freezing temperature of the food is T,
The said control part is a refrigerator as described in said (1) or (2) which controls the drive of these several ventilation parts so that the temperature of the said cooling chamber may be T-2.0 degreeC-T + 15.0 degreeC. .

  (5) Any of the above (1) to (4), wherein the control unit controls driving of the plurality of air blowing units such that the temperature of the cooling chamber is −6.0 ° C. to 2.0 ° C. The refrigerator according to item 1.

  (6) The cooling unit according to any one of (1) to (5), wherein the air blowing unit is disposed on a ceiling side of the cooling chamber and sends out the cooling air toward a floor surface.

  (7) The cooling according to any one of (1) to (6), wherein the plurality of air blowing units include at least a first air blowing unit and a second air blowing unit having different directivities of the cooling air to be sent out. Warehouse.

  (8) The above-described plurality of temperature detection units include at least a first temperature detection unit disposed on a ceiling side of the cooling chamber and a second temperature detection unit disposed on a floor side of the cooling chamber. The refrigerator according to any one of 1) to (7).

  (9) The refrigerator according to any one of (1) to (8), further including an electric field generation unit that generates an electric field in the cooling chamber.

  According to the present invention, temperature unevenness in the cooling chamber is reduced (preferably eliminated), and the cooling chamber can be maintained at a substantially uniform temperature. Therefore, all the foodstuffs arrange | positioned at the cooling chamber can be preserve | saved at the same temperature. In addition, since the temperature unevenness can be suppressed to a low level, the temperature of the cooling chamber can be set to a lower temperature while preventing the food from freezing (the destruction of the cell walls of the food due to freezing). Therefore, the freshness of the food can be maintained for a long time. Furthermore, the electric field has the effect of lowering the freezing point of the food, and the freshness of the food can be maintained over a long period of time.

It is sectional drawing which shows suitable embodiment of the refrigerator of this invention. It is a figure which shows an example of the cooling part which the refrigerator shown in FIG. 1 has. It is a figure explaining arrangement | positioning and the temperature sensor of the fan which the refrigerator shown in FIG. 1 has. It is a figure explaining the structure of the fan which the refrigerator shown in FIG. 1 has. It is a block diagram explaining the temperature control part which the refrigerator shown in FIG. 1 has. It is a figure which shows an example of the preservation | save method of the foodstuff in 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 cross-sectional view showing a preferred embodiment of the refrigerator of the present invention, FIG. 2 is a diagram showing an example of a cooling unit included in the refrigerator shown in FIG. 1, and FIG. 3 is a diagram showing the refrigerator shown in FIG. FIG. 4 is a diagram for explaining the arrangement of the fans and the temperature sensor, FIG. 4 is a diagram for explaining the configuration of the fans included in the refrigerator shown in FIG. 1, and FIG. FIG. 6 is a block diagram showing an example of a method for storing food in the refrigerator shown in FIG. In the following description, the upper side in FIG. 1 is also referred to as “upper” and the lower side is also referred to as “lower”.

  The refrigerator of the present invention can be used as, for example, a fixed refrigerator installed indoors such as a food processing factory or storage, or a mobile type loaded on a moving body such as a ship, an airplane, a train, or an automobile. Although it can be used as a refrigerator, the refrigerator of the present invention is particularly suitable as the latter moving side refrigerator. Since the cooling function of the mobile refrigerator is greatly affected by the external environment (temperature, weather, shade / sunshine), etc., for example, in the summer when the temperature is high, the interior of the refrigerator is sufficiently and uniform. It was very difficult to cool down. On the other hand, according to the refrigerator of the present invention, the inside of the refrigerator can be sufficiently and uniformly cooled without being affected by the external environment, and in this respect, it is particularly suitable for a mobile refrigerator. I can say that.

The size of the refrigerator of the present invention (cooling chamber S2, which will be described later) is not particularly limited, for ^example, a relatively large capacity of about 150 meters 3 to 1000 m ³ are suitable.

  In addition, the food stored in the refrigerator of the present invention is not particularly limited, for example, fish, shrimp, squid, octopus, sea cucumber, shellfish and other seafood and processed foods such as these fillets, strawberries, apples, Fruits such as mandarin oranges, pears, vegetables such as cabbage, lettuce, cucumber, tomatoes, fresh foods such as meat such as beef, pork, chicken and horse meat, and noodles made from cereal flour such as wheat flour, rice flour and oat flour And so on. In the following, fruits and vegetables are also referred to as fruits and vegetables.

  As shown in FIG. 1, the refrigerator 1 has a main body 2 having an outer wall 21 and an inner wall 22 made of, for example, aluminum or stainless steel, and a heat insulating material 23 filled between the outer wall 21 and the inner wall 22. doing. The main body 2 is provided with a door (not shown). By opening and closing the door, the food can be stored in the main body 2 and the food in the main body 2 can be taken out. In addition, it does not specifically limit as an installation place of a door, For example, it may be provided in the side wall of the main body 2, may be provided in the ceiling, and may be provided in the floor. Moreover, as a structure of a door, if food can be taken in and out, it will not specifically limit, For example, a hinge door may be sufficient, a slide door may be sufficient, and a shutter door may be sufficient.

  A top plate 26 is disposed near the ceiling in the main body 2, and the inside of the main body 2 is partitioned into a space above the top plate 26 and a space below the top plate 26. The partitioned upper space functions as a guide path S1 for guiding cool air (cooling air), and the lower space functions as a cooling chamber S2 for storing food. In the refrigerator 1, the guide path S <b> 1 and the cooling chamber S <b> 2 do not have to be completely separated and may be partially connected.

  A cooling unit 3 for cooling the air in the cooling chamber S2 is provided near the ceiling in the main body 2. The cooling unit 3 is not particularly limited as long as air can be cooled. For example, a cooling unit such as a refrigerator, a freezer, an air conditioner, or the like that is generally used can be used. An example of the cooling unit 3 will be briefly described. As shown in FIG. 2, the cooling unit 3 includes a refrigerant pipe 31 filled with a refrigerant, a cooler (evaporator) 33 connected by the refrigerant pipe 31, and a compressor. (Compressor) 34 and condenser (condenser) 35, cooler 33 is installed near the ceiling in main body 2, and compressor 34 and condenser 35 are arranged in machine room R arranged outside main body 2. Has been. Then, the refrigerant takes heat in the cooling chamber S2 in the cooler 33, is compressed in the compressor 34, and repeats a refrigeration cycle in which heat is discharged to the outside air in the condenser 35, thereby cooling the air in the cooling chamber S2. be able to. Further, the main body 2 has an intake port 28 for taking in the air in the cooling chamber S2 toward the cooler 33, and a blowout port 29 for blowing the air cooled by the cooler 33 into the induction path S1, As described later, the circulation of cold air can be performed more smoothly.

Further, the top plate 26 is provided with a plurality of fans (air blowing units) 4. Each fan 4 has a function in which the cooling unit 3 sends out the cool air in the guide path S1 to the cooling chamber S2. Thereby, as shown by the arrow in FIG. 1, the cool air in the main body 2 can be circulated in the order of the cooling chamber S2, the cooling unit 3, and the guide path S1. Therefore, it is possible to cool the cooling housing S2 efficiently, (temperature difference between the lowest temperature T _min and the highest temperature T _max in the cooling chamber S2) temperature unevenness in the cooling housing S2 suppressing ΔT Can do. Moreover, each fan 4 is arrange | positioned so that cold air may be sent out toward the floor surface of cooling chamber S2, ie, a vertical direction lower side. Thereby, the above effect becomes more remarkable. Note that a plurality of ducts that connect the outlets 29 of the cooling unit 3 and the respective fans 4 may be arranged in the guide path S <b> 1 so that the cool air blown out by the cooling unit 3 is evenly guided to the respective fans 4. .

  As shown in FIG. 3, the plurality of fans 4 include a first fan (first air blowing unit) 41 and a second fan (second air blowing unit) 42. In FIG. 3, for convenience of explanation, the first fan 41 is shown in a circle and the second fan 42 is shown in a square, but this represents the outer shape of the first and second fans 41, 42. is not.

  Further, as shown in FIG. 4, the first fan 41 and the second fan 42 have different directivities (radiation angles) of the cool air sent out, and the first fan 41 is more directional than the second fan 42. High (radiation angle θ is narrow). As described above, by mixing fans having different directivities, temperature unevenness (ΔT) in the cooling chamber S2 can be more effectively suppressed.

As shown in FIG. 3, each of the first fan 41 and the second fan 42 is substantially the entire area of the cooling chamber S <b> 2 in a plan view (hereinafter simply referred to as “plan view”) viewed from the vertical direction. It is spread out almost uniformly. Thereby, cooling chamber S2 can be cooled more uniformly and the temperature nonuniformity ((DELTA) T) in cooling chamber S2 can be suppressed more effectively. The arrangement of the first fan 41 and the second fan 42 is not particularly limited. For example, as shown in FIG. 3, the first fans 41 are arranged in a matrix, and the second fans 42 are arranged in a matrix between them. You may arrange in. The arrangement density of the first fans 41 varies depending on the size and power of the first fans 41, but is preferably about 250 cm ^{2 to 1} m ² / piece in a plan view, for example. The arrangement density of the second fans 42 is the same as this.

  In addition, the 1st fan 41 does not need to be arrange | positioned uniformly over substantially the whole area of cooling chamber S2. For example, when there are a region that is easily cooled and a region that is difficult to cool in the cooling chamber S2, the first fan that is disposed immediately above the region that is difficult to cool so that a large amount of cool air is guided to the region that is difficult to cool than the region that is easily cooled. The arrangement density of 41 may be made higher than the arrangement density of the first fans 41 arranged immediately above the region that is easily cooled. The same applies to the second fan 42. Further, the existence ratio of the first and second fans 41 and 42 may be made different between the region that is difficult to cool and the region that is easily cooled. For example, the first fan 41 with high directivity is installed more directly than the second fan directly above the region where cooling is difficult, and conversely, the second fan 42 with low directivity is disposed directly above the region where cooling is easy. You may install more than the fan 41. FIG.

  Further, the flow rate of the cold air sent out by the first and second fans 41 and 42 is not particularly limited, but is 0.01 to 2.0 m / in the vicinity of (directly below) the first and second fans 41 and 42. It is preferably about 2 seconds, and more preferably about 0.1 to 0.5 m / second. By setting the flow rate to this level, the cooling chamber S2 can be sufficiently cooled and the flow of cold air can be made gentle. As a result, temperature unevenness in the cooling chamber S2 can be more effectively suppressed.

  As shown in FIG. 1, the cooling chamber S <b> 2 is provided with a plurality of temperature sensors (temperature detection units) 5. Each temperature sensor 5 has a function of detecting the temperature of the arrangement place. Thereby, since the temperature of several different places in cooling chamber S2 can be detected, temperature nonuniformity ((DELTA) T) can be detected accurately. Although it is preferable that the plurality of temperature sensors 5 are disposed almost uniformly over the entire cooling chamber S2, in the present embodiment, the temperature sensors 5 are separately arranged on the ceiling side and the floor side. Since the cooling air sinks downward in the vertical direction, temperature unevenness is likely to occur in the height direction of the cooling chamber S2. Therefore, by installing the temperature sensor 5 separately on the ceiling side and the floor side, it is possible to more accurately detect the temperature unevenness in the cooling chamber S2 while suppressing the number of the temperature sensors 5 provided. Hereinafter, the temperature sensor 5 disposed on the ceiling side is also referred to as a “first temperature sensor 51”, and the temperature sensor 5 disposed on the floor side is also referred to as a “second temperature sensor 52”.

As shown in FIG. 3, the first temperature sensor 51 is spread out almost uniformly throughout the cooling chamber S2 in a plan view. The same applies to the second temperature sensor 52. Thereby, since the temperature of each part can be detected over the whole area of cooling chamber S2, the temperature nonuniformity ((DELTA) T) of cooling chamber S2 can be detected more correctly. The arrangement density of the first and second temperature sensors 51 and 52 is not particularly limited, but is preferably about 250 cm ^{2 to 1} m ² / piece in a plan view, for example. Thereby, the above effect becomes more remarkable.

  Note that the first temperature sensor 51 does not have to be disposed substantially uniformly so as to extend over substantially the entire area on the ceiling side of the cooling chamber S2. For example, when there are a region where temperature unevenness is likely to occur in the cooling chamber S2 and a region where temperature unevenness is unlikely to occur, the density of the first temperature sensors 51 arranged in the region where temperature unevenness is likely to occur is the temperature unevenness. You may make it higher than the arrangement | positioning density of the 1st temperature sensor 51 arrange | positioned in the area | region which does not produce easily. The same applies to the second temperature sensor 52.

  Moreover, the electric field generator 6 is arrange | positioned in the cooling chamber S2, and the electric field formed by the electric field generator 6 can be made to act on the foodstuff accommodated in cooling chamber S2. Thereby, while being able to sterilize food, aging of food can be promoted. Therefore, the food can be stored for a longer period while maintaining the freshness, and the umami of the food can be amplified. Furthermore, the electric field has the effect of lowering the freezing point of the food, and the freshness of the food can be maintained over a long period of time. The electric field applied to the food is not particularly limited, but is preferably an electric field generated by an alternating current having a voltage higher than 100 V and a frequency of 5 Hz or more. Thereby, the above effect becomes more remarkable.

  The configuration of the electric field generator 6 is not particularly limited as long as the above function can be exhibited. The electric field generator 6 of this embodiment has the plate 61 arrange | positioned at the floor surface side of cooling chamber S2. Therefore, in the refrigerator 1, foodstuffs are stacked on the plate 61. The plate 61 is made of a conductive material such as aluminum or stainless steel, and is arranged and fixed on the floor surface of the cooling chamber S2 via a plurality of insulating members 62 having insulation properties. Is electrically insulated.

  In order to prevent unintentional contact (energization) between the plate 61 and the side wall of the main body 2, an insulating member may be disposed between them, or the entire inner wall of the cooling chamber S2 may be preliminarily made of an insulating sheet. It may be covered. When the refrigerator 1 is used as the above-described mobile refrigerator, an insulating member 62 provided with an impact absorbing mechanism (for example, a coil spring, a cylinder, a gel-like impact absorbing material, etc.) may be used. . This makes it difficult for the impact caused by the movement of the moving body to be transmitted to the food. Therefore, for example, damage to food can be suppressed, and the freshness of food can be more effectively maintained.

  In addition, the electric field generator 6 includes a voltage applying unit 63 that applies a voltage between the plate 61 and the main body 2. When a voltage is applied between the plate 61 and the main body 2 by the voltage application unit 63, an electric field as described above is formed, and this electric field acts on the food.

  Such an electric field generator 6 is preferably provided with a safety device for preventing a user's electric shock or fire. For example, the safety device is provided with a sensor that detects opening and closing of the door installed in the main body 2, and configured to stop voltage application from the voltage application unit 63 when the door is opened in conjunction with the sensor. May be. In addition, the safety device is provided with a human sensor for detecting the presence of a human in the cooling chamber S2, and in conjunction with this human sensor, when a human is detected in the cooling chamber S2, the voltage application unit 63 applies a voltage. It may be configured to stop. In particular, when the refrigerator 1 is loaded and installed on a loading platform such as a truck as a mobile refrigerator, the safety device is, for example, an automobile ECU (from an impact detection sensor such as an acceleration sensor provided in the automobile). ECU that determines whether or not to deploy the airbag based on the information), and is configured to stop the voltage application from the voltage application unit 63 when the airbag ECU determines to deploy the airbag. May be.

Further, as shown in FIG. 5, the refrigerator 1 includes a temperature control unit (control unit) 7 that independently controls the driving of the plurality of fans 4 based on the detection results of the plurality of temperature sensors 5. Yes. The temperature control unit 7 is configured so that the cooling chamber S2 is within a predetermined temperature range and the temperature unevenness ΔT in the cooling chamber S2 is reduced (that is, the highest temperature among the temperatures detected by the plurality of temperature sensors 5). The driving of each fan 4 is controlled independently so that the difference ΔT ′ between T _max ′ and the lowest temperature T _min ′ becomes small. Thereby, the temperature unevenness in the cooling chamber S2 is reduced (preferably eliminated), the inside of the cooling chamber S2 can be maintained at a substantially uniform temperature, and all foods arranged in the cooling chamber S2 are stored at the same temperature. be able to. In addition, since the temperature unevenness ΔT can be kept small in the refrigerator 1, the temperature of the cooling chamber S <b> 2 can be set to a lower temperature while preventing freezing of the food (destruction of the cell wall of the food due to freezing). Thereby, the freshness of a foodstuff can be maintained over a long period of time. The temperature unevenness ΔT (ΔT ′) is preferably as small as possible. Specifically, it is preferably within 2.0 ° C., more preferably within 0.5 ° C., and further preferably 0 ° C. preferable. By setting it as such a numerical range, the said effect becomes more remarkable.

  Note that the temperature control unit 7 may control the driving (for example, ON / OFF) of the cooling unit 3 together with the control of the plurality of fans 4.

  Although it does not specifically limit as temperature of cooling chamber S2, When the freezing temperature of a foodstuff is set to T (degreeC), it is preferable to set it as T-2.0 degreeC-T + 2.0 degreeC, and T-T + 1.0 degreeC More preferably. However, when the food is fruits and vegetables, a low temperature failure may occur. Therefore, the temperature of the cooling chamber S2 is preferably T-2.0 ° C to T + 15.0 ° C. Here, since the water contained in the food is a solution in which some solute is dissolved, the freezing point is lowered. Therefore, the freezing temperature of a general food is about −5 ° C. to 0 ° C. Therefore, in the case of these foods, the temperature of the cooling chamber S2 may be about -6.0 ° C to 15.0 ° C, preferably about -3 ° C to 0 ° C. Thereby, while being able to prevent the deterioration of the taste of food more effectively, the freshness of food can be maintained over a long period of time.

  The refrigerator 1 has been described above. According to such a refrigerator 1, since the drive of the plurality of fans 4 is independently controlled based on the detection results of the plurality of temperature sensors 5, the entire region in the cooling chamber S2 can be uniformly cooled. . Moreover, since it is hard to be influenced by the arrangement | positioning of the foodstuff in cooling chamber S2, the whole region of cooling chamber S2 can be cooled uniformly no matter how foodstuff is arrange | positioned.

  In the cooling chamber S2 of the refrigerator 1, foods that are naked or simply packed (such as packed in a plastic bag or vacuum packed) can be stored as they are. Although it is good, as shown in FIG. 6, it is preferable to preserve | save the foodstuff accommodated with the ice 8 in the casing 9 excellent in heat insulation. Thereby, the temperature of the food can be kept more constant by the synergistic effect of the cooling chamber S2 and the ice 8, and a decrease in the freshness of the food can be more effectively prevented.

  The casing 9 is made of, for example, a foam heat insulating material such as foamed polystyrene or urethane foam, a fiber heat insulating material such as glass wool or rock wool, and the like. Moreover, you may acquire the heat insulation function by making the inside of the wall surface of a casing into a vacuum.

  The casing 9 is covered with ice 8 that is an aggregate of fine-particle ice, and at least a part (preferably the entire area) of the food 100 is covered with the ice 8. And inside the casing 9, the foodstuff 100 is hold | maintained at the temperature higher 0.0 to 1.5 degreeC than the freezing temperature of the said foodstuff.

  Here, the ice 8 is not particularly limited, but ice containing 0.5% by mass to 5.0% by mass of salt is preferably used, and ice containing 2.0% by mass to 4.0% by mass is used. More preferred. As a result, the food 100 can be kept at a temperature lower than 0 ° C. (a temperature closer to the freezing temperature) and at a constant temperature for a long time. As a result, it is possible to maintain the freshness of the food 100 over a long period of time. In addition, by using a particulate ice aggregate as the ice 8, it is possible to effectively prevent the food from being damaged when the ice 8 and the food 100 come into contact with each other.

  Note that the ice 8 and the food 100 may be in direct contact or may be non-contact. In the case of non-contact, for example, the aggregate may be put in a water-impermeable bag. In the case of direct contact and the food 100 is seafood, if it is cooled with normal ice, the effect of the water dissolved in the seafood due to the osmotic pressure relationship between the seafood and the water when the ice melts There is a problem that taste is lowered. However, by using ice 8 containing 0.5% by mass to 5.0% by mass of salt as in this embodiment, even if ice 8 is melted, the melted water has an appropriate salt concentration. Since it holds, the influence of the osmotic pressure on the inside of the seafood can be made small, and the deterioration of the taste can be effectively prevented.

  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, the configuration of each part can be replaced with any configuration that exhibits the same function, and any configuration can be added. Moreover, in the refrigerator of this invention, although the fan was used as a ventilation part, it may replace with this and may use an injection nozzle etc.

DESCRIPTION OF SYMBOLS 1 Cooling chamber 2 Main body 21 Outer wall 22 Inner wall 23 Heat insulating material 26 Top plate 28 Intake port 29 Outlet 3 Cooling part 31 Refrigerant pipe 33 Cooler 34 Compressor 35 Condenser 4 Fan 41 First fan 42 Second fan 5 Temperature sensor 51 1st temperature sensor 52 2nd temperature sensor 6 Electric field generator 61 Plate 62 Insulating member 63 Voltage application part 7 Temperature control part 8 Ice 9 Casing 100 Food R Machine room S1 Induction path S2 Cooling room (theta) Radiation angle

Claims (9)

A cooling chamber for refrigerated storage of food,
A cooling unit for cooling air in the cooling chamber;
A plurality of air blowing sections for sending cooling air cooled by the cooling section to the cooling chamber;
A plurality of temperature detectors installed at different locations in the cooling chamber;
And a control unit that controls driving of the plurality of air blowing units based on detection results of the plurality of temperature detection units.   The refrigerator according to claim 1, wherein the control unit controls driving of the plurality of air blowing units such that a difference in temperature detected by the plurality of temperature detection units is within 2.0 ° C. When the freezing temperature of the food is T,
The said control part is a refrigerator of Claim 1 or 2 which controls the drive of these several ventilation parts so that the temperature of the said cooling chamber may be T-2.0 degreeC-T + 2.0 degreeC. The food product is fruit and vegetables;
When the freezing temperature of the food is T,
The said control part is a refrigerator of Claim 1 or 2 which controls the drive of these several ventilation parts so that the temperature of the said cooling chamber may be set to T-2.0 degreeC-T + 15.0 degreeC.   The cooling according to any one of claims 1 to 4, wherein the control unit controls driving of the plurality of air blowing units such that a temperature of the cooling chamber is -6.0 ° C to 15.0 ° C. Warehouse.   The said ventilation part is a refrigerator of any one of Claim 1 thru | or 5 which is arrange | positioned at the ceiling side of the said cooling chamber, and sends out the said cooling air toward a floor surface.   The cooler according to any one of claims 1 to 6, wherein the plurality of air blowing units include at least a first air blowing unit and a second air blowing unit having different directivities of the cooling air to be sent out.   The plurality of temperature detection units include at least a first temperature detection unit disposed on a ceiling side of the cooling chamber and a second temperature detection unit disposed on a floor side of the cooling chamber. The refrigerator of any one of these.   The refrigerator of any one of Claims 1 thru | or 8 which has an electric field generation | occurrence | production part which generates an electric field in the said cooling chamber.

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