JP3217759U - Low temperature and high humidity storage case for groceries - Google Patents

Abstract

[PROBLEMS] To provide a storage device for fresh food, in particular, a device installed at a counter of a restaurant or sushi restaurant and used as a so-called refrigerated material case, and capable of storing fresh food at low temperature and high humidity. provide.
A case main body having a case main body 1 composed of a front wall 2, a rear wall 3, left and right side walls 4, 5 and a bottom wall 6 and an upper lid 7 which is openable and closable on an upper portion of the case main body. A grid frame 8 that divides the interior of the housing into a storage unit that stores foodstuffs and a cooling unit that is filled with a coolant is erected at a position spaced from the rear wall. The inside of the case body can be maintained at a low temperature and high humidity by laying the coolant flat on the upper surface of the bottom wall of the storage unit and filling the coolant up to a position above the lattice frame of the cooling unit.
[Selection] Figure 1

Description

  The present invention relates to a storage case that can store fresh foods such as seafood and fruits that require freshness at a low temperature and high humidity, and is installed at a counter such as a Japanese restaurant or a sushi restaurant, as a so-called refrigerated material case. Regarding what is used.

  Traditionally, cases where fresh foods are stored while being refrigerated at counters in sushi restaurants, cooking restaurants, etc. are called refrigerated material cases, and the food items such as fish (sushi material) displayed in the cases are on the front. At least the front surface or the upper surface of the refrigerator compartment extending from side to side so as to be visible to the customer is made of a transparent plate. In this refrigerated material case, in order to preserve the material in the case in a fresh state, the refrigerated room is cooled as follows.

  For example, in FIG. 7A which is a sectional front view of a low temperature showcase 100 which is one of the conventional examples and FIG. 7B which is a longitudinal sectional side surface, a curved glass 114 as a transparent plate and a transparent plate are transparent on the front and upper surfaces. Inside the heat insulating wall 106 including the plate 121, a storage chamber 123 for storing food is provided. Of the side walls 104 and 105 constituting the heat insulating wall 106, a machine room 108 having a compressor 109 is provided on the side wall 104 side. Similarly, coolers 129 and 131 constituting a so-called refrigeration cycle are arranged in the bottom wall 102 and the rear wall 103 constituting the heat insulating wall 106. When the food is cooled and stored, by operating the compressor 109, the refrigerant is supplied to the coolers 129 and 131 to cool the interior of the storage chamber 123 by the heat exchange action of the refrigeration cycle ( Patent Document 1).

  Moreover, in the fresh foodstuff storage apparatus U which is another conventional example shown in FIG. 8, the foodstuff storage chamber 50 which has the opening part 200 in the upper surface, and the coolant E which has the opening part 42 in the upper surface and consists of crushed ice, And a cooling chamber 40 that can be supplied from the coolant supply port 70 via the coolant supply path 60 and accommodated therein. The opening 200 of the food storage chamber 50 has a transparent door body 201 that can be freely opened and closed, and the cooling chamber 40 is positioned below the food storage chamber 50, and a vent plate member 43 is provided in the opening 42. The food storage chamber 50 is cooled from below by the coolant E. That is, as a result of the cold air from the coolant E passing through the ventilation plate member 43 in the upward direction and entering the food product storage chamber 50, the food product F stored in the food product storage chamber 50 is cooled without being dried. This is a fresh food product storage device that can maintain the temperature (see Patent Document 2).

JP-A-6-117745 Utility Model Registration No. 3164310

  However, in an apparatus for refrigerated storage of fresh food using a refrigeration cycle cooler using a compressor, a condenser, or the like shown in FIG. Since the machine is used, there is a problem that the appetite is inevitably reduced by giving the customer an unpleasant feeling due to the mechanical sound that drives the compressor and the like. In addition, a cooler using a compressor is disadvantageous in that the storage device becomes large because a refrigeration machine is required separately from the food storage chamber, and the production cost and operation maintenance cost must be increased. Had. Also, in the refrigeration system using a cooler, the air in the food storage room is condensed by the cooler, and the inside of the storage case dries as the cooling operation proceeds, which is preferable for maintaining the freshness of fresh foods, especially seafood. It was not.

  Further, in the fresh food product storage device of another conventional example shown in FIG. 8, cold air can go in and out in the direction of the upper surface where there is a food product storage chamber having an opening for allowing fresh food products to enter and exit from the upper surface. A cooling chamber capable of accommodating a coolant (breaking ice) having an opening is separately provided. However, as a food storage chamber constituting a storage device placed on a limited-sized counter, the food storage volume (accommodable ratio) is reduced, and the cooling and humidification action in the food storage chamber is Since it is carried out only by natural convection from the lower cooling chamber where the air is opened, the heavy and moist cooling air from the crushed ice is difficult to move upward, and the cooling and humidification effect is sufficiently given to the upper food compartment. There were technical and structural issues such as inability to do so.

  Therefore, the object of the present invention is to solve the above-mentioned conventional problems, and it has a simple structure without providing a mechanically driven refrigeration device such as a compressor, and sushi. The object is to provide a low-temperature and high-humidity storage case for groceries that can maintain a quiet in-store environment even when installed at a counter in a store or the like. In addition, the food storage room for storing food can be quickly cooled using natural convection of air, and the storage room can be kept at high humidity to prevent fresh food from drying out. To provide a case.

  In order to achieve the above object, a low-temperature and high-humidity storage case for food items according to claim 1 of the present invention comprises a case body composed of a front wall, a rear wall, left and right side walls, and a bottom wall, In a low-temperature, high-humidity storage case with a top lid that can be opened and closed at the top, the lattice frame that divides the interior of the case body into a food storage part and a cooling part filled with a coolant is separated from the rear wall. Standing on the bottom wall with the side edges reaching the left and right side walls, laying the coolant flat on the upper surface of the bottom wall of the storage unit, and filling the coolant to the upper position of the lattice frame, The interior can be maintained at low temperature and high humidity.

  Moreover, the low temperature and high humidity storage case of the foodstuff of Claim 2 uses the vacuum pair glass which is transparent and has a high heat insulation effect on the front wall.

  The low temperature and high humidity storage case for foodstuff according to claim 3 uses a transparent glass or synthetic resin as an upper lid, and the upper lid is horizontally mounted and fixed on the upper front side of the case main body. After being fixed horizontally on the inner wall above the wall, it is placed on the frame so that it can be opened and closed, and a handle is provided on the upper surface of the upper lid.

  Further, in the low temperature and high humidity storage case for food items according to claim 4, the lattice frame is detachably erected inside the case body, and the upper end of the case reaches the vicinity of the upper lid when attached to the case body. It is a thing.

  The low-temperature and high-humidity storage case for food items according to claim 5 is provided with a drain pipe that communicates with the upper surface of the bottom wall penetrating the lower part of the rear wall or side wall.

  According to the low-temperature and high-humidity storage case for food items according to claim 1 of the present invention, the rear frame is provided with a lattice frame that divides the inside of the case main body into a storage portion for storing food items and a cooling portion for charging a coolant Therefore, the coolant can be introduced and stored up to the upper position of the lattice frame at the upper surface of the bottom wall of the storage unit and the cooling unit. As a result, the foodstuff in the storage unit can be maintained at a low temperature and high humidity by supplying cold air wetted from the gaps in the lattice frame uniformly and efficiently from the upward and lateral directions by natural convection. Also, by not using a refrigerator, there is an effect that it is quiet and maintenance costs are low.

  Moreover, according to the low temperature and high humidity storage case of the foodstuff according to claim 2, the front wall is made of a vacuum pair glass that is transparent and has a high heat insulating effect, so that the food can be seen well from the customer and the heat insulating effect is further improved. There is an effect that can be increased.

  According to the low-temperature and high-humidity storage case for food items according to claim 3, the front lid and the rear wall are made of transparent glass or synthetic resin, and are horizontally mounted and fixed on the upper front side of the case body. After being fixed horizontally on the inner wall of the upper part of the case, it is placed on the frame so that it can be opened and closed, and by providing a handle on the upper surface of the upper lid, the food can be seen from the upper surface of the case body, and by opening the upper lid, Coolant can be easily put in and out. In addition, since only the upper part of the storage case is opened, there is an effect that heavy and humid cold air can be closed without escaping from the lower part or the lateral direction to the outside.

  According to the low temperature and high humidity storage case for foodstuffs according to claim 4, the lattice frame is detachably provided inside the case body, and the upper end of the lattice frame is close to the upper lid when the lattice frame is attached to the case body. By reaching, the lattice frame can be removed and washed, and a clean state can be maintained. In addition, by increasing the height of the lattice frame, natural convection is likely to occur, and the efficiency of cooling and humidification can be increased.

  Further, according to the low temperature and high humidity storage case for food items according to claim 5, the drain pipe communicating with the upper surface of the bottom wall is provided through the lower part of the rear wall or side wall so that the melted ice or food There is an effect that the residue of the product can be taken out appropriately.

1 is an overall perspective view showing an embodiment of the present invention. It is the vertical side view of embodiment of this invention, and the detail drawing of the B section and the C section. It is the sectional view on the AA line of FIG. An experimental apparatus for measuring temperature and humidity is shown, in which (a) is a storage case in which ice is spread over the entire bottom wall, and (b) is a storage case in which a cooling unit according to an embodiment of the present invention is also filled with ice. It is a temperature change figure of the storage case (storage part) which shows an experimental result. It is a humidity change figure of a storage case (storage part) showing an experimental result. The low-temperature showcase which concerns on a prior art example is shown, (a) is a vertical front view, (b) is a vertical side view. It is a vertical side view which shows another prior art example.

  According to the food storage case according to the present invention, the lattice frame 8 that divides the inside of the case main body 1 into the storage unit 20 for the food F and the cooling unit 21 that can store and fill the coolant E is separated from the rear wall 3. The cooling unit 21 (space formed by the lattice frame 8, the rear wall 3 and the side walls 4, 5) is filled with a coolant E (eg, crushed ice) from the bottom upward to make the storage unit 20 efficient. The storage case K can be cooled and humidified well.

Hereinafter, an embodiment of a low temperature and high humidity storage case for food according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an overall perspective view of a storage case K implemented as a “sushi material case” used in a sushi restaurant or the like as an embodiment of a low-temperature and high-humidity storage case of the present invention. FIG. These are the sectional view on the AA line of FIG. 2, and a partial detail drawing.

The storage case of the present invention is installed at a sushi restaurant counter or the like. The case main body 1 of the storage case K includes a main housing portion composed of a rear wall 3, left and right side walls 4, 5 and a bottom wall 6 made of wooden planks or laminated wood such as firewood and tochigi. The storage case K is provided with a front wall 2 and an upper lid 7 made of a transparent material, for example, transparent glass, on the front surface and the upper surface visible from the customer side. In particular, by forming the front wall 2 with transparent vacuum pair glass, the case K is less likely to cause condensation on the glass surface due to the temperature difference between the inside and outside, and the food product F in the case K is clearly visible from the customer side. There is a favorable effect such as arousing.
The front wall 2 has the left and right side end portions of the front wall 2 from above in the gap between the rails of the parallel rails 10 and 10 fixed to the inner walls of the left and right side walls 4 and 5 while tilting from the upper side to the front side. Insert and combine with case body 1. The lower end portion of the inserted front wall 2 abuts with the front bottom wall 6 a continuous with the bottom wall 6, and the front surface of the case body 1 is sealed through the packing P. The upper end position of the front wall 2 inserted and fixed is in contact with the front frame 11 which is passed between the left and right side walls 4 and 5 and fixed horizontally in a suspended state. When the front wall 2 is installed by being inserted into the gap between the parallel rails 10, 10, the lower surface of the upper end of the front wall 2 comes into contact with the front frame 11 via the packing P.

The lower surface on the front side of the upper lid 7 abuts in a state of being fitted into a recessed portion 12 formed on the upper surface of the front frame 11, and the recessed portion is interposed through a packing P fitted around the end portion of the upper lid 7. 12 is placed. On the other hand, the lower surface of the rear side of the upper lid 7 is placed in a sealed state on the rear frame 13 similarly through the packing P, fixed horizontally between the left and right side walls 4, 5 on the inner wall above the rear wall 3. The A handle 9 is fixed to the upper surface of the upper lid 7 so that it can be easily handled when the upper lid 7 is opened and closed.
In a state where the upper lid 7 is closed, the storage case K is hermetically sealed by the abutment of the packing P fitted to the front and rear end portions of the upper lid 7, the upper surfaces of the front frame 11 and the rear frame 13. Can be blocked. Holding the handle 9 and lifting the upper lid 7 upward with the corner of the recess 12 as a fulcrum of swing, the upper part of the storage case K is opened, and the food product F or ice as the coolant E is introduced. Can do. Then, the upper lid 7 is pivoted downward to close the inside of the storage case K, thereby closing the storage case K in a state filled with cold air and moisture. Since the specific gravity of the cold air is heavy, by making the upper part of the storage case K freely openable and closable, the cool air and moisture in the storage case K are difficult to escape from above and can be efficiently cooled and moisturized.
Note that the lower surface on the front side of the upper lid 7 and the upper surface of the front frame 11 may be attached so as to be swingable with a hinge or the like.

Inside the case body 1, there is provided a lattice frame 8 for partitioning into a storage part 20 on the front side for storing the foodstuff F and a cooling part 21 on the rear wall 3 side for filling the coolant E in the vertical direction. Yes. The lattice frame 8 is inserted into the gap between the parallel rails 14 and 14 fixed in the vertical direction to the inner walls of the left and right side walls 4 and 5 from the upper side, and the lower end of the lattice frame 8 is the upper surface of the bottom wall 6. Abutting and colliding with.
The lattice frame 8 is erected at a predetermined distance from the rear wall 3 to form a cooling space as the cooling unit 21, and is stored in a rectangular outer frame made of wood, stainless steel, or the like. A large number of grids made of bamboo, wood, etc. are provided in parallel so that cold air can easily enter and exit between the cooling unit 21 and the cooling unit 21, and solid refrigerant E does not pass through, but cold air and moisture can easily enter and exit Structure.
Furthermore, the cooling part 21 between the rear wall 3 and the lattice frame 8 is filled with a coolant E such as crushed ice in the vertical direction from the upper surface of the bottom wall 6 to the upper position of the case body 2, so that cold air and moisture are latticed. Natural convection easily passes through the gap of the frame 8, and heavy cold air that is uniformly moistened from above and laterally can be supplied into the storage unit 20.

At an appropriate position of the rear wall 3 communicating with the upper surface of the bottom wall 6, drain water in which the crushed ice as the coolant E stored in the storage unit 20 and the cooling unit 21 has melted to become water, or dripped food A drain pipe 16 having a function of collecting the residue etc. of the product F and discharging it to the outside of the storage case K is provided through the rear wall 3. The drain pipe 16 is provided with a cap 17 that can open and close the inlet / outlet of the drain pipe 16, and the cap 17 can be opened as appropriate to drain drain water and the like.
In addition, you may provide the penetration position which installs the drain pipe 16 in the left-right side walls 4 and 5. FIG.

The operation of the storage case K of the present invention having the above configuration will be described below.
First, the upper lid 7 is opened by swinging upward with the hollow portion 12 as a fulcrum, or the entire upper lid 7 is lifted and opened, and the coolant E is spread horizontally at the bottom position of the storage portion 20, Next, the coolant E is filled up to a position above the lattice frame 8 in the cooling portion 21 of the space constituted by the rear wall 3 and the lattice frame 8.
Next, the foodstuff F placed on the tray D is placed on the coolant E in the storage unit 20 and displayed. Thereafter, the upper lid 7 is swung or placed downward, and the inside of the storage case K is sealed.
The fresh food F such as seafood is directly cooled by the cool air from the bottom of the storage unit 20 by the coolant E, and the cool air having a heavy specific gravity with moisture from the cooling unit 21 is above and below the lattice frame 8. Then, the food product F flows into the storage unit 20 of the food product F uniformly and efficiently by natural convection, and the food product F is quickly cooled and humidified.

  When the food product F is not stored, the front wall 2 and the lattice frame 8 can be easily removed from the parallel rails 10, 10, 14, and 14. Further, since the upper lid 7 is also placed above the storage case K, the inside and the upper part of the storage case K can be opened widely by easily removing the entire case from the storage case K or opening it. Is easy, and the inside of the storage case K can be kept clean.

FIG. 4 shows an experimental apparatus for simultaneously measuring changes in temperature and humidity in the storage case K when the cooling unit 21 is filled with crushed ice as the coolant E using the storage case K of the present invention. Yes.
The experimental apparatus for the storage case K shown in FIG. 4A shows an experimental apparatus in which the lattice frame 8 is not installed in the case body 1 and the coolant E is spread widely on the bottom of the bottom wall 6.
The experimental apparatus for the storage case K shown in FIG. 4B is formed between the lattice frame 8 and the rear wall 3 by inserting the lattice frame 8 into the parallel rails 14 and 14 in the storage case K and standing. An experimental apparatus carried out by filling the space of the cooling unit 21 with the coolant E is shown.
In the experiment, measurement of temperature and humidity was started at the same time after the ice was added, and the temperature and humidity in the storage unit 20 that changed during the 1 hour from the start were measured with a digital measuring instrument. The room temperature during the experiment was 25 ° C.

FIG. 5 and FIG. 6 are tables comparing the temperature change and humidity change of the above experimental apparatus.
As shown in FIG. 5, in the experimental apparatus (a) in which ice is spread all over the bottom wall 6, the temperature drops to 9.9 ° C. after 20 minutes from the introduction of ice, and after 60 minutes the food has passed. The temperature dropped to 8.1 ° C. at the position of the storage unit 20. However, in the experimental apparatus (b) which is an embodiment of the present invention, the temperature rapidly dropped to 4.7 ° C. after 20 minutes, and the temperature dropped to 3.3 ° C. after 60 minutes.
FIG. 6 is a chart comparing the simultaneously measured humidity changes. In the experimental apparatus (a) in which ice is laid on the entire bottom wall 6, 52.9% after 20 minutes from the initial humidity of 36.4%. It increased to 56.6% after 60 minutes. In the experimental apparatus (b) which is an embodiment of the present invention, the humidity increased to 68.2% after 20 minutes, and further increased to 73.3% after 60 minutes.
By providing the cooling unit 21 that can store the coolant E in the vertical direction in this way, natural convection of the air easily occurs in the storage case K, and the moist cooling air is efficiently uniform from the upper side and the horizontal direction. It was confirmed that both the effects of cooling and humidification were enhanced. That is, the temperature drop in the storage case K is remarkable, and this is referred to the “humid air diagram” (humid air hx diagram) for determining the state of the internal humid air. It can be confirmed that the synergistic effect of cooling and humidification is increased because the relative humidity in the housing case K is simultaneously increased by lowering the temperature.

According to the low-temperature and high-humidity storage case of the food product of the present invention configured as described above, the configuration is simple without providing a mechanical refrigeration device such as a compressor, and it can be installed at a counter such as a sushi restaurant. Can maintain a quiet environment. Further, the inside of the storage unit 20 for storing the food product F can be easily cooled by natural convection of cold air from above and from the side, and can be easily cooled, and can be maintained at high humidity so as not to dry the food product F. There is. Further, by removing the front wall 2, the upper lid 7, and the lattice frame 8, there is an effect that the inside of the storage case K can be easily cleaned and the inside of the case K can be kept clean.
In the present embodiment, the case portion (2-6) of the case body 1 is described as wooden, but it is also possible to cover a metal such as stainless steel or a resin or the like.

  Since the storage case of the present invention can efficiently cool the fresh food F in a state where the customer is seen and humidify it, the storage case using the food F has a beneficial effect.

F Foodstuff D Dish pan K Storage case E Coolant P Packing 1 Case body 2 Front wall 3 Rear wall 4,5 Left and right side walls 6 Bottom wall, 6a Front bottom wall 7 Top lid 8 Grid frame 9 Handle
DESCRIPTION OF SYMBOLS 10 Parallel rail 11 Front frame 12 Recessed part 13 Rear frame 14 Parallel rail 16 Drain pipe 17 Cap 20 Storage part 21 Cooling part

Claims (5)

In the case of a low temperature and high humidity storage case of a foodstuff provided with a case body composed of a front wall, a rear wall, left and right side walls and a bottom wall, and an upper lid that can be opened and closed above the case body
A lattice frame that partitions the interior of the case main body into a food storage portion and a cooling portion filled with a coolant stands up against the bottom wall with the side edges reaching the left and right side walls at positions spaced from the rear wall. The temperature of the food product can be maintained at low temperature and high humidity by laying the coolant flat on the upper surface of the bottom wall of the storage unit and filling the coolant up to a position above the lattice frame of the cooling unit. Humid storage case.   The low-temperature and high-humidity storage case for foodstuff according to claim 1, wherein a transparent vacuum pair glass is used for the front wall.   The upper lid is made of transparent glass or synthetic resin and can be freely opened and closed to a front frame horizontally mounted and fixed on the upper front side of the case body and a rear frame horizontally fixed to an inner wall above the rear wall. The low-temperature and high-humidity storage case for foodstuff according to claim 1 or 2, wherein the storage case is placed and a handle is provided on the upper surface of the upper lid.   The utility model registration claim characterized in that the lattice frame is detachably erected inside the case body, and the upper end of the lattice frame reaches the vicinity of the upper lid when the lattice frame is attached to the case body. 4. A low-temperature and high-humidity storage case for foodstuffs according to any one of items 1 to 3.   The food according to any one of claims 1 to 4, wherein a drain pipe communicating with the upper surface of the bottom wall is provided through the lower part of the rear wall or side wall. Low temperature and high humidity storage case.

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