Food Refrigeration Equipment

Abstract

To provide a food freezing device capable of suppressing unevenness in freezing of food.SOLUTION: A food freezing device comprises: a food storage that stores food; a cooler that cools the inside of the food storage; a temperature detection unit that detects a temperature of air in the food storage or a temperature of the food; and a control unit that controls the cooler. The control unit switching from a standby mode of controlling the cooler so that the detected temperature is maintained after the detected temperature of the temperature detection unit reaches a set temperature higher than a freezing point of the food, to a rapid freezing mode of controlling the cooler so that the cooling capacity is higher than in the standby mode.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a food freezer. [Background technology]

[0002] 2. Description of the Related Art As described in Patent Document 1, a food cooling chamber used for freezing food and the like is known.

[0003] The food cooling cabinet described in Patent Document 1 is a blast chiller, and includes a cooler connected to a cooling unit, a cooler fan for circulating the cold air that has been heat exchanged in the cooler inside the cabinet, an interior sensor for detecting the interior temperature, and a core temperature sensor for detecting the core temperature of food. In this cooling cabinet, the rotation frequency of the cooler fan is controlled based on the temperature detected by the core temperature sensor. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-249444 A Summary of the Invention [Problem to be solved by the invention]

[0005] The air blast method of Patent Document 1 can rapidly lower the temperature of food by blowing cold air onto the food with great force. However, the cold air hits the food unevenly, which causes unevenness in the speed at which the food freezes. Therefore, conventional food freezers have the problem of making it difficult to prevent uneven freezing of food.

[0006] The present invention has been made in consideration of the above problems, and has an object to provide a food freezing device that is capable of suppressing uneven freezing of food. [Means for solving the problem]

[0007] A food freezing device according to one aspect of the present invention includes a food storage unit that stores food, a cooler for cooling the inside of the food storage unit, and a temperature detection unit that detects the temperature of the air in the food storage unit or the temperature of the food, An interior fan for forming a circulating air flow in the food storage, and a food cooling fan for blowing air toward the food; The cooler , the interior fan and the food cooling fan The control unit switches from a standby mode in which the cooler is controlled so that the detected temperature by the temperature detection unit reaches a set temperature and then the detected temperature is maintained at the set temperature, to a quick freezing mode in which the cooler is controlled so that the cooling capacity is higher than that of the standby mode. In the standby mode, the control unit drives the interior fan while stopping the food cooling fan, and in the quick-freezing mode, drives the food cooling fan.

[0008] According to this food freezing device, in standby mode, the air temperature in the food storehouse reaches a set temperature and then while maintaining the set temperature, the food temperature approaches the set temperature, or in standby mode, the food temperature reaches a set temperature and then is maintained at the set temperature, thereby reducing unevenness in food temperature. Therefore, since the standby mode can be switched to the quick freezing mode when unevenness in food temperature has been reduced, uneven freezing of food can be suppressed. In addition, by using both the internal fan and the food cooling fan, it is possible to efficiently cool food. In addition, by driving the food cooling fan in the quick-freeze mode, it is possible to increase the cooling speed of food in the quick-freeze mode. In the quick freezing mode, the control unit may drive the internal fan at a rotation frequency higher than that in the standby mode. The food storage space is divided into an air-conditioned space and a food storage space by a partition, the interior fan is provided in the air-conditioned space so as to blow air from the air-conditioned space into the food storage space, and multiple food cooling fans may be provided in the food storage space.

[0009] In the food freezing apparatus, the set temperature may be set in a refrigeration temperature zone.

[0010] With this configuration, when switching from standby mode to quick-freeze mode to freeze food, the time it takes for the food temperature to reach the freezing point from the set temperature can be shortened, thereby preventing the temperature unevenness of the food from increasing until the food temperature reaches the freezing point.

[0011] The food freezing apparatus may further include a food plate made of metal on which the food is placed.

[0012] According to this configuration, by using not only the cold air circulating inside the food storage but also the metal plate, food can be cooled more efficiently and the freezing speed can be increased.

[0013] In the above food freezing apparatus, the food plate may include a plate body having a placement surface on which the food is placed, and fins provided on a surface of the plate body opposite the placement surface.

[0014] With this configuration, the fins can increase the heat transfer area of ​​the food plate, allowing food to be cooled more efficiently.

[0019] In the food freezing apparatus, the control unit may switch from the quick freezing mode to a rewarming mode based on a signal input. In the rewarming mode, the control unit may control the cooler so that the temperature of the air in the food storage room is raised to the set temperature.

[0020] According to this configuration, the inside of the food storage can be easily and quickly reheated in preparation for the next food freezing process. Effect of the Invention

[0021] As is clear from the above description, according to the present invention, a food freezing device capable of suppressing uneven freezing of food can be provided. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a food freezing device according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram showing a schematic configuration of a food plate in accordance with a first embodiment of the present invention. [Diagram 3] 5 is a graph illustrating a standby mode and a quick-freezing mode executed by the food freezing apparatus according to the first embodiment of the present invention. [Figure 4]5 is a flowchart for explaining a standby mode and a quick-freezing mode executed by the food freezing apparatus according to the first embodiment of the present invention. [Diagram 5] 10 is a flowchart for explaining an internal temperature control in a food freezing apparatus according to a second embodiment of the present invention. [Figure 6] 11 is a flowchart for explaining an internal temperature control in a food freezing apparatus according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0024] (Embodiment 1) First, the configuration of a food freezing apparatus 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 and 2. The food freezing apparatus 1 according to this embodiment is an apparatus for quickly freezing food F1. The type of food F1 is not particularly limited, but it may be, for example, hot food immediately after cooking, such as curry or stew. As shown in Fig. 1, the food freezing apparatus 1 mainly includes a food storeroom 10, a food storage rack 20, a cooler 30, a heater 31, a humidifier 32, an internal fan 40, a plurality of food cooling fans 41, an internal temperature detector T1, a food temperature detector T2, and a controller 50.

[0025] Food storehouse 10 stores food F1 and includes a storehouse body 11 and a door 12. As shown in Figure 1, the space inside storehouse body 11 is divided into food storage space 11A and air-conditioned space 11B by a vertically extending partition plate 13. The opening of food storage space 11A can be opened and closed by door 12.

[0026] Food storage rack 20 is disposed in food storage space 11A. Food storage rack 20 includes a plurality of shelves 21 arranged vertically at intervals. Food F1 is placed on shelf 21.

[0027] Cooler 30 is for cooling the inside of food storehouse 10. Specifically, cooler 30 is an evaporator in a refrigerator including a vapor compression refrigeration cycle, and is disposed in air-conditioned space 11B. Cooler 30 cools the air circulating inside food storehouse 10 through heat exchange with a refrigerant.

[0028] Heater 31 is a heater for heating the air circulating inside food storehouse 10. In this embodiment, as shown in Fig. 1, heater 31 is disposed downstream of cooler 30 in air-conditioned space 11B. Note that in this specification, upstream and downstream are based on the direction in which air circulates inside food storehouse 10.

[0029] Humidifier 32 is for humidifying the air circulating within food storehouse 10, and is disposed upstream of cooler 30 in air-conditioned space 11B (on the bottom surface of storehouse body 11). Humidifier 32 in this embodiment is of a bread dish type, and includes an evaporation dish in which humidification water is stored, and a humidification heater (not shown) disposed within the evaporation dish. Providing humidifier 32 makes it possible to prevent food F1 from drying out during freezing processing. However, humidifier 32 is not an essential component of the food freezing device of the present invention, and may be omitted.

[0030] The interior fan 40 is for forming a circulating air flow in the food storehouse 10, and is driven by a motor 40A. By driving the interior fan 40, a circulating air flow is formed in the food storehouse 10, which flows downward through the food storage space 11A and upward through the air-conditioned space 11B. As shown in FIG. 1, an intake port is formed between the bottom surface of the storehouse body 11 and the lower end of the partition plate 13 to draw air from the food storage space 11A to the air-conditioned space 11B. An air outlet is formed between the upper surface of the storehouse body 11 and the upper end of the partition plate 13 to blow air from the air-conditioned space 11B to the food storage space 11A. The interior fan 40 is disposed in a position facing the air outlet.

[0031] The food cooling fan 41 is for blowing air towards the food F1. As shown in Fig. 1, one food cooling fan 41 is provided on each of the multiple shelf boards 21. The food cooling fan 41 is provided on the rear end side of the shelf board 21 (the end opposite the door 12) and blows air towards the inner surface of the door 12.

[0032] The internal temperature detector T1 is a sensor that detects the temperature of the air inside the food storehouse 10. In this embodiment, as shown in FIG. 1, the internal temperature detector T1 is disposed near the air outlet in the food storage space 11A. A detection signal from the internal temperature detector T1 is sent to the control unit 50. The location of the internal temperature detector T1 is not limited thereto, and it may be disposed near the air inlet in the food storage space 11A, or may be disposed near both the air outlet and the air inlet. Although not shown, a humidity detector is also disposed inside the food storehouse 10.

[0033] Food temperature detection unit T2 is a sensor that directly detects the temperature of food F1. A detection signal from food temperature detection unit T2 is transmitted to control unit 50. Although only one food temperature detection unit T2 is shown in FIG. 1, multiple food temperature detection units T2 may be provided. In this case, the multiple food temperature detection units T2 detect the temperatures of multiple parts of food F1 or multiple foods F1, respectively, and the temperature uniformity of the entire food F1 or multiple foods F1 can be confirmed based on the temperature difference between them.

[0034] Food freezing apparatus 1 further includes food plate 60 (FIG. 2). Food plate 60, on which food F1 is placed, is made of a metal such as aluminum or stainless steel. Food plate 60 is placed on shelf 21 (FIG. 1) when in use, and shelf 21 is provided with a support portion (not shown) for supporting food plate 60.

[0035] As shown in FIG. 2, the food plate 60 includes a plate body 61 and a plurality of heat exchange fins 62. The plate body 61 is, for example, a rectangular plate in plan view, and has an upper surface 61A (mounting surface) on which the food F1 is placed, and a lower surface 61B facing the opposite side to the upper surface 61A. The heat exchange fin 62 is a rectangular plate in plan view having a width (length in the vertical direction of the paper in FIG. 2) smaller than the width of the plate body 61 (length in the horizontal direction of the paper in FIG. 2), and is provided on the lower surface 61B of the plate body 61. More specifically, as shown in FIG. 2, the heat exchange fin 62 is attached perpendicularly to the plate body 61, and the longitudinal direction of the heat exchange fin 62 is parallel to the longitudinal direction of the plate body 61. The plurality of heat exchange fins 62 are arranged at intervals from each other in the short-side direction of the plate body 61, and are parallel to each other. The heat exchange fins are not limited to parallel fins, and may be, for example, pin-type fins or offset-type fins.

[0036] Food plate 60 is placed on shelf 21 so that the longitudinal direction of plate body 61 and heat exchange fins 62 coincides with the direction of air blown by food cooling fan 41 (FIG. 1). Therefore, air blown out from food cooling fan 41 flows through gaps between adjacent heat exchange fins 62 (FIG. 2) along the longitudinal direction of the heat exchange fins 62.

[0037] Control unit 50 is a computer that controls various operations of food freezing apparatus 1, and is composed of a control panel located outside food storehouse 10. Specifically, control unit 50 controls the cooling capacity of cooler 30, the heating capacity of heater 31, the amount of humidification by humidifier 32, and the drive (on / off and rotation frequency) of internal fan 40 and food cooling fan 41.

[0038] The control unit 50 switches from a standby mode in which the cooler 30 is controlled so that the temperature detected by the inside temperature detection unit T1 reaches a first set temperature (set temperature) higher than the freezing point of the food F1 and then the detected temperature is maintained at the first set temperature, to a quick freezing mode in which the cooler 30 is controlled so that the cooling capacity is higher than in the standby mode. This control will be explained below with reference to Figures 3 and 4. Figure 3 is a graph showing the time change in the air temperature (solid line) and the time change in the food temperature (dashed line) inside the food storehouse 10, with the horizontal axis indicating time and the vertical axis indicating temperature. Figure 4 is a flowchart showing the contents of the above control.

[0039] Before the freezing process begins, the inside of food storehouse 10 is at room temperature, and in this state food F1 is placed inside food storehouse 10 (step S10 in FIG. 4). Specifically, door 12 is opened, food plate 60 (FIG. 2) with food F1 placed on it is placed in a predetermined position on shelf 21 (FIG. 1), and then door 12 is closed. This causes food F1 to be stored in food storage space 11A.

[0040] Next, cooling of the food storehouse 10 is started (step S20). In this step S20, the cooling capacity of the cooler 30 is controlled by the control unit 50 so that the air temperature in the food storehouse 10 (the temperature detected by the storehouse temperature detection unit T1) approaches the first set temperature from room temperature. Specifically, the freezer is feedback-controlled by the control unit 50 based on the difference between the temperature detected by the storehouse temperature detection unit T1 and the first set temperature. During this time, the surface temperature of the food F1 is also detected by the food temperature detection unit T2. In step S20, the storehouse fan 40 is driven by the control unit 50, while the food cooling fan 41 is stopped. Also, the humidifier 32 may be operated during step S20 to prevent the food F1 from drying out.

[0041] Here, the "first set temperature" is a temperature higher than the freezing point of the food F1, and is input to the control unit 50. The "freezing point" is the temperature at which the food F1 starts to freeze, and differs depending on the type of food F1. For example, the freezing point of seafood is -1.3°C, the freezing point of beef is -1.7°C, the freezing point of tomatoes is -1°C, the freezing point of apples is -2°C, and the freezing point of cherries is -4°C. In this embodiment, the first set temperature is set in the refrigeration temperature zone, and is set to 5°C or lower (for example, 3°C).

[0042] The shaded area in the graph of Figure 3 is called the "maximum ice crystallization temperature zone," which is the temperature zone where ice forms during the freezing process of food F1. The maximum ice crystallization temperature zone is, for example, in the range of -1°C to -5°C, and its upper limit value corresponds to the freezing point of food F1.

[0043] When the air temperature inside food storehouse 10 reaches the first set temperature (YES in step S30 in FIG. 4), control unit 50 controls cooler 30 so that the air temperature is maintained at the first set temperature (step S40). As shown in FIG. 3, at time t1 when the air temperature inside food storehouse 10 reaches the first set temperature, the food temperature has not yet reached the first set temperature, and at a later time t2, the food temperature reaches the first set temperature, lagging behind the storehouse temperature. The period from when cooling inside food storehouse 10 begins until the food temperature reaches the first set temperature corresponds to the standby mode (times t0 to t2 in FIG. 3).

[0044] When the food temperature reaches the first set temperature (YES in step S50 in FIG. 4), the control unit 50 switches the operation mode of the food freezing device 1 from the standby mode to the quick-freezing mode. In the quick-freezing mode, the freezer is feedback-controlled based on the difference between the second set temperature and the temperature detected by the internal temperature detection unit T1 (step S60), and the control unit 50 drives the food cooling fan 41 (step S70). The second set temperature is a temperature lower than the first set temperature and the lower limit temperature of the maximum ice crystallization temperature zone, and differs depending on the type of food F1. In this embodiment, the rotation frequency of the internal fan 40 in the quick-freezing mode is higher than the rotation frequency of the internal fan 40 in the standby mode.

[0045] In step S60, a lower set temperature is used compared to step S20 during standby mode, thereby increasing the cooling capacity of the cooler 30. As a result, as shown in Figure 3, both the air temperature and food temperature in the food storehouse 10 drop more steeply compared to standby mode.

[0046] This allows the cooling rate in the maximum ice crystal temperature zone to be increased. If the cooling rate in the maximum ice crystal temperature zone is slow, the ice crystals formed during the freezing process will become large, which may result in the cells of the food F1 being destroyed and impairing the taste when thawed. In contrast, by increasing the cooling rate in the maximum ice crystal temperature zone, the occurrence of the above-mentioned problems can be prevented. In step S60, the food F1 is cooled by the cold air circulating within the food storehouse 10 and the food plate 60 (FIG. 2), and the food F1 is flash-frozen.

[0047] When the air temperature inside food storehouse 10 reaches the second set temperature (YES in step S80 in FIG. 4), control unit 50 controls cooler 30 so that the air temperature is maintained at the second set temperature (step S90). After that, frozen food F1 is taken out of food storehouse 10 (step S100) and stored in a freezer or the like.

[0048] As described above, according to the food freezing device 1 of this embodiment, while the air temperature in the food storehouse 10 reaches the first set temperature in the standby mode and is maintained at the first set temperature, the food temperature is brought closer to the first set temperature, and temperature unevenness of the food F1 at temperatures near the freezing point can be reduced. Therefore, the standby mode can be switched to the quick freezing mode in a state where the temperature unevenness of the food F1 at temperatures near the freezing point has been reduced, and the food F1 can be quickly frozen while suppressing cooling unevenness in the maximum ice crystal temperature range, thereby suppressing freezing unevenness of the food F1. Note that "temperature unevenness of the food F1" includes temperature unevenness within the same food F1 (for example, temperature unevenness due to the difference between the surface temperature of the food F1 and the internal temperature of the food F1) and temperature unevenness between multiple foods F1.

[0049] (Embodiment 2) Next, a food freezing device according to a second embodiment of the present invention will be described with reference to Fig. 5. The food freezing device according to the second embodiment basically has the same configuration and produces the same effects as the first embodiment, but differs in that it does not have a food temperature detection unit T2. Only the differences from the first embodiment will be described below.

[0050] Fig. 5 shows a control flow of a freezing process for food F1 in embodiment 2. The control flow in Fig. 5 differs from the control flow in Fig. 4 only in step S51. That is, steps S11 to S41 and S61 to S101 in Fig. 5 are the same as steps S10 to S40 and S60 to S100 in Fig. 4.

[0051] In the second embodiment, after the air temperature in food storehouse 10 reaches the first set temperature (YES in step S31 of FIG. 5), the air temperature is maintained at the first set temperature for a predetermined set time. This set time is a time confirmed in advance by a preliminary experiment or the like as the time from when the air temperature in food storehouse 10 reaches the first set temperature until when the food temperature reaches the first set temperature, and is input to control unit 50.

[0052] In step S51, a timer built into control unit 50 counts the time that has elapsed since the air temperature inside food storehouse 10 reached the first set temperature, and determines whether the elapsed time has reached the set time. After the set time has elapsed (YES in step S51), control unit 50 switches the operation mode of the food freezing apparatus from the standby mode to the quick-freeze mode, as in the first embodiment.

[0053] According to this embodiment, even in an apparatus configuration in which the food temperature detection unit T2 is omitted, it is possible to stabilize the temperature of the food F1 in the standby mode and then switch to the quick-freezing mode, which further simplifies the configuration of the food freezing apparatus.

[0054] (Embodiment 3) Next, a food freezing apparatus according to a third embodiment of the present invention will be described with reference to Fig. 6. The food freezing apparatus according to the third embodiment basically has the same configuration and produces the same effects as the first embodiment, but differs in that the control unit 50 further executes a rewarming mode. Only the differences from the first embodiment will be described below.

[0055] Fig. 6 shows a control flow of a freezing process for food F1 in embodiment 3. The control flow in Fig. 6 differs from the control flow in Fig. 4 in that it further includes steps S110 and S120. That is, steps S12 to S102 in Fig. 6 are the same as steps S10 to S100 in Fig. 4.

[0056] When a rewarming signal is input to control unit 50 after frozen food F1 is removed from food storehouse 10 in step S102 (YES in step S110), control unit 50 switches the operation mode of the food freezing apparatus from quick freezing mode to rewarming mode based on the signal input (step S120). For example, control unit 50 may receive the rewarming signal input to an input unit (not shown) such as a touch panel, or the rewarming signal may be input to control unit 50 by detecting that door 12 has been opened and then closed in step S102. In the rewarming mode, control unit 50 controls the cooling capacity of cooler 30 so that the temperature of the air in food storehouse 10 rises to a first set temperature. At this time, control unit 50 may operate heater 31.

[0057] After the inside of the food storehouse 10 has been reheated in this manner, the next food F1 is placed in the food storehouse 10 and the freezing process is carried out again. According to the food freezing device of this embodiment, the inside of the food storehouse 10 can be easily reheated when the freezing process of food F1 is carried out successively.

[0058] (Embodiment 4) Next, a food freezing device according to embodiment 4 of the present invention will be described. The food freezing device according to embodiment 4 is basically the same as embodiments 1 and 3, but differs in that a food temperature detection unit T2 is used instead of an internal temperature detection unit T1 in controlling the cooler 30.

[0059] In this embodiment, in the standby mode, the control unit 50 controls the cooler 30 so that the temperature detected by the food temperature detection unit T2 is maintained at the first set temperature after the temperature reaches the first set temperature. That is, instead of steps S30 to S50 in the control flow of FIG. 4, it determines whether the food temperature has reached the first set temperature, and then maintains the food temperature at the first set temperature for a predetermined time, and then switches to the quick freezing mode. In this case, the air temperature in the food storehouse 10 may become negative. Therefore, in the standby mode, the control unit 50 controls the cooler 30 based on the temperature detected by the food temperature detection unit T2, and controls the cooler 30 so that the air temperature in the food storehouse 10 is higher than the freezing point.

[0060] Furthermore, in this embodiment, control unit 50 may control cooler 30 in the quick freezing mode so that the temperature detected by food temperature detection unit T2 is maintained at the second set temperature. That is, in step S80 of the control flow in Figure 4, it may be determined whether the food temperature has reached the second set temperature, and in step S90, the food temperature may be maintained at the second set temperature.

[0061] (Other embodiments) Here, other embodiments of the present invention will be described.

[0062] The food cooling fan 41 may be omitted, in which case the risk of equipment failure can be reduced.

[0063] The heat exchange fins of food plate 60 may be columnar. Also, a heat pipe (not shown) may be provided inside food plate 60 to improve the cooling capacity of food F1. Also, food plate 60 may be omitted, and food F1 may be placed directly on shelf board 21.

[0064] Food temperature detection unit T2 may detect the surface temperature of food F1, or may detect the central temperature (core temperature) of food F1.

[0065] The food cooling fan 41 may be driven during the standby mode, or may be stopped during the quick-freezing mode.

[0066] When switching from the standby mode to the quick freezing mode, the rotation frequency of the internal fan 40 may be kept constant.

[0067] The quick freezing mode is not limited to being executed immediately after the food temperature reaches the first set temperature, and a waiting time may be provided after the food temperature reaches the first set temperature before the quick freezing mode is executed. In this case, the quick freezing mode can be executed after the overall temperature of the food F1 is further homogenized.

[0068] The food storehouse 10 is not limited to the rear-air outlet type shown in FIG. 1, but may be a ceiling-air outlet type.

[0069] The determination in step S51 (FIG. 5) in embodiment 2 may be applied to embodiment 1 or embodiment 3. In this case, food temperature detection unit T2 is not used for operational control, but is used to monitor the temperature of food F1.

[0070] The embodiments disclosed herein are illustrative in all respects and should not be construed as limiting. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the scope and meaning equivalent to the claims. [Explanation of symbols]

[0071] 1 Food freezing equipment 10 Food storage 30 Cooler 40 Interior fan 41 Food Cooling Fan 50 Control section 60 Food Plate 61 Plate body 61A Top surface (mounting surface) 62 Heat exchange fin (fin) F1 food T1 Internal temperature detector (temperature detector) T2 Food temperature detector (temperature detector)

Claims

1. a food storage facility for storing food; A cooler for cooling the inside of the food storage; A temperature detection unit that detects the temperature of the air in the food storage or the temperature of the food; An interior fan for forming a circulating air flow within the food storage; a food cooling fan for blowing air toward the food; A control unit that controls the cooler, the interior fan, and the food cooling fan, the control unit switches from a standby mode in which the cooler is controlled so that the detected temperature by the temperature detection unit reaches a set temperature and then the detected temperature is maintained at the set temperature to a quick freezing mode in which the cooler is controlled so that the cooling capacity is higher than that of the standby mode; The control unit drives the interior fan while stopping the food cooling fan in the standby mode, and drives the food cooling fan in the quick freezing mode.

2. The food freezing device as described in claim 1, wherein the control unit, in the quick freezing mode, drives the internal fan at a rotation frequency higher than that in the standby mode.

3. The food storage space is divided into an air-conditioned space and a food storage space by a partition plate, The interior fan is provided in the air-conditioning space so as to blow air in the air-conditioning space into the food storage space, 3. The food freezing apparatus according to claim 1, wherein a plurality of said food cooling fans are provided in said food accommodation space.

4. 4. The food freezing apparatus according to claim 1, wherein the set temperature is set in a refrigeration temperature range.

5. 5. The food freezing apparatus according to claim 1, further comprising a food plate made of metal on which the food is placed.

6. The food plate comprises: A plate body having a placement surface on which the food is placed; The food freezing apparatus according to claim 5 , further comprising: a fin provided on a surface of the plate body opposite to the placing surface.

7. The control unit switches from the quick freezing mode to a rewarming mode based on a signal input, The food freezing apparatus according to any one of claims 1 to 6, wherein in the reheating mode, the cooler is controlled by the control unit so that the temperature of the air in the food storage room is raised to the set temperature.

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