JP3653259B2 - Cooling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cold insulation facility that keeps foods placed on the floor of a room in a substantially aseptic state.
[0002]
[Prior art]
Conventionally, foods that need to be frozen or stored at a cold temperature are sometimes placed in a room where the food can be kept cold. For example, when putting foods that require freezing or refrigeration, such as fresh fish or fresh vegetables, on the wholesale market, arrange the foods side by side in the wholesale market room, and drop them off and carry them out. Is. Below, the case where a foodstuff is a tuna is demonstrated.
[0003]
The tuna to be put on the sardine is brought to the wholesale market in the state of raw tuna filled with ice or frozen tuna. Since the sashimi is usually performed from 4 am to 5 pm, the tuna that is brought in is arranged in a room where the wholesale market is performed from around midnight. The room in which the screen is carried out is a sealed room having a ceiling and surrounding side walls as well as a floor surface . Then, tuna is placed on the floor of this room through a pallet and arranged. The tuna is placed in a room where a wholesale market is held for 4 to 5 hours, and this room is provided with a cold insulation facility.
[0004]
As shown in FIG. 6, the cold insulation equipment is configured such that the air conditioner and the duct 2 ′ are attached to the ceiling 13 of the room 1 or the upper end of the side wall 12 and are suspended from the ceiling 13. Then, the cool air is discharged from the duct to cool the room and keep it cool.
[0005]
However, in such a cold insulation facility, the duct for discharging the cold air is arranged at a position higher than the operator's human body, and the cold air is ejected from above the operator's head, so that the temperature of the operator's sense of temperature is low. The work efficiency is poor, and the whole room is cooled by discharging cool air from a duct located at a high position to keep the food placed on the floor cold, so the cooling efficiency is poor ( That is, power consumption increases.
[0006]
Therefore, it is conceivable to arrange the duct at a low position, but in this case, the discharged cold air will be blown to the food, and if the food is raw tuna, the surface layer part of the tuna will dry, and in the case of a frozen tuna The surface layer of the tuna was thawed and the freshness and quality of the food were reduced. Furthermore, it is preferable that the food is clean and kept in a substantially aseptic state. In particular, when the duct is disposed at a low position, it is necessary to sterilize the cold air discharged from the duct.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and the object of the present invention is to prevent deterioration of workability due to a decrease in the sensible temperature of the worker and improve the cold insulation efficiency, and cool air is blown to the food. It is an object of the present invention to provide a cold insulation facility capable of preventing deterioration of freshness and quality due to the above and capable of keeping foodstuffs in a substantially sterile state.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the cold insulation equipment according to the present invention is a cold insulation equipment that keeps the food 3 placed on the floor 11 of the sealed room 1 in a substantially aseptic condition, and includes a side wall 12 of the room 1. along the surface and arranged capable of ejecting duct 2 air sterilized consists cylindrical filter in its lower, discharge the cool air sterilization from the duct 2 in light winds by blowing cold air into the duct 2 The low temperature cold insulation region 4 is formed from the floor surface 11 to the height of the upper end of the food 3. By adopting such a configuration, it is possible to prevent the freshness and quality of the food 3 from being deteriorated by blowing cold air to the food 3 arranged in the cold insulation region 4 and to entrain air above the cold insulation region 4. It is possible to efficiently cool the cold insulation region 4 at a low temperature by blowing cool air to the cold insulation region 4 while suppressing the cooling, and it becomes easier to discharge the cold air in a light wind state than that in which the cold air is discharged from the nozzle. Further, it is possible to prevent cold air from being blown from above the operator's head and lowering the sensible temperature of the operator and deteriorating workability, and it is not necessary to cool the entire room 1 and cooling efficiency is good. Is.
[0009]
Further, it is preferable to discharge cool air from the entire circumferential surface of the duct 2. With such a configuration, it becomes easy to discharge cool air in a light wind state.
[0010]
Further, it is preferable to discharge cool air from the duct 2 at a speed of 0.05 to 0.1 m / s. By setting it as such a structure, it can prevent reliably that cold air is sprayed on the foodstuff 3 and the freshness and quality of the foodstuff 3 fall.
[0011]
Moreover, it is preferable to arrange the duct 2 in the vicinity of the height of the upper end portion of the cold insulation region 4. By setting it as such a structure, cold air can be sent only to the cold insulation area | region 4, and cooling efficiency becomes still better.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described based on embodiments shown in the accompanying drawings. In the present embodiment, the cold insulation equipment of the present invention will be described as being provided in the wholesale market room 1, but is not particularly limited thereto. Furthermore, in the present embodiment, the room 1 is formed with a substantially sealed space inside by the floor surface 11, the ceiling 13 and the side wall 12 . Hereinafter, the case where the foodstuff 3 is the tuna 3a (frozen tuna and raw tuna), and this tuna 3a is arranged in the room 1 of the fish wholesale market and is kept cold.
[0013]
In the present embodiment, the room 1 is provided in the wholesale market for carrying out a slide, and approximate dimensions are formed such that the width is 16 m, the depth is 19 m, and the height is 4.5 m. As shown in FIG. 3, this room 1 has four rooms arranged side by side. The front side is the side where the wholesaler goes in and out, and the back side is the carry-in side where the food 3 (that is, the tuna 3a) is carried in and out. It becomes.
[0014]
The side wall 12a on the wholesale side of each room 1 is provided with a plurality of entrances and exits (approximately approximate dimensions are 3m or 5m in width and 3m in height) and a shutter 14 that can be opened and closed. The side wall 12b on the carry-in side of each room 1 is provided with a carry-in port (approximate dimensions are a width of 7 m and a height of 4 m) and a shutter 15 that can be opened and closed. In addition, the side wall 12c in the depth direction of each room 1 may be provided with a service port (not shown) that can enter and exit the adjacent room 1.
[0015]
1 and 2 show a side view and a perspective view of the room 1 in which the tuna 3a is placed on the floor 11 as seen obliquely from above, and FIG. 4 shows a perspective view of the interior of the room 1.
[0016]
As shown in FIG. 4, the tuna 3a is placed on the floor 11 via the slat 5, but the tuna 3a is about 50cm in height when laid down sideways, and the slat 5 is about 10cm in height at most. Therefore, the height from the floor surface 11 to the upper end of the tuna 3a is at most about 60 cm. Therefore, in this embodiment, a space from the floor surface 11 to a height of about 60 cm is set as a cold insulation region 4 described later, and cold air is discharged into the cold insulation region 4 by a cold insulation facility.
[0017]
Next, the cold insulation equipment will be described. In the room 1 described above, as a cold insulation facility, a duct 2 is disposed in the lower part of the room 1, particularly in the vicinity of the cold insulation region 4, and an air conditioner to which the duct 2 is connected is disposed.
[0018]
The air conditioner is disposed outside or inside the room 1 and ventilates the cool air through the duct 2, and a main part is configured by a cooling unit such as a heat pump, a heat exhaust unit, and a control unit. In the present embodiment, the air conditioner is a water-cooled type in which the heat is exchanged by the cooling water in the exhaust heat unit. The duct 2 is connected to such an air conditioner. When the air conditioner is disposed outside the room 1, the duct 2 is disposed through the side wall 12.
[0019]
The duct 2 is configured by a cylindrical filter having a substantially circular cross section in which the filter itself is formed in a cylindrical shape so that air can be discharged from the entire circumferential surface.
[0020]
In this embodiment, the cylindrical filter is formed of a non-woven fabric (so-called “denishi non-woven fabric”) formed from the above-mentioned dendritic fibers by charging polypropylene fibers each having a diameter of about 2 μm to form a “denite” shape. Is done. This filter not only filters and removes dust and the like with fibers, but also adsorbs and removes fine dust that cannot be filtered with fibers with dendritic fibers. Further, since the filter is formed without using an adhesive, it has high chemical resistance (acid resistance and alkali resistance), high water repellency, high water resistance, and flame resistance.
[0021]
Since the duct 2 is formed by such a cylindrical filter, the air (cold air) discharged from the duct 2 has almost no dust and can achieve a substantially aseptic state.
[0022]
The duct 2 formed of such a cylindrical filter is disposed in the vicinity of the upper end portion of the above-described cold insulation region 4 in the room 1. In this embodiment, it is attached at a position 70 cm high from the floor surface 11 of the side wall 12 of the room 1. And this duct 2 is connected to the air conditioner arrange | positioned inside the room 1, the cool air from an air conditioner is ventilated inside, and cool air is discharged from the perimeter surface. The cool air is discharged from the duct 2 in a light wind state (0.05 m to 0.1 m per second).
[0023]
The tuna 3a is placed in the room 1 provided with such cold insulation equipment. The tuna 3a is carried into the room 1 in the state of a raw tuna 3a that has been packed in ice and is in a chilled state or a frozen tuna 3a. The carry-in entrance formed in the side wall 12b on the carry-in side of the room 1 is opened, the truck is placed, and the raw tuna 3a and the frozen tuna 3a are lowered by a slide. Then, the tuna 3 a is placed on the floor 11 of the room 1, and the tuna 3 a is placed and arranged on the saw 5.
[0024]
The tuna 3a is disposed in the cold insulation region 4 described above, that is, in a space approximately 60 cm from the floor surface 11 of the room 1, and the cold air from the duct 2 enters the cold insulation region 4 without entraining the air above the cold insulation region 4 so much. The cold insulation region 4 is kept at a low temperature. Further, an operator who carries the tuna 3a into the room 1 and places it on the floor surface 11 can perform work with good workability without lowering the sensible temperature because the cool air is not blown from the overhead.
[0025]
An example of the temperature distribution in the room is shown in FIG. 5A shows the temperature distribution in the cross section indicated by the arrow A in FIG. 2 of the room, and FIG. 5B shows the temperature distribution in the cross section indicated by the arrow B in FIG. In addition, the temperature at the time of a measurement is about 25 degreeC on a floor surface, the cold air discharged from the duct 2 is 10 degreeC, and the foodstuff 3a is a frozen tuna. It can be seen from FIGS. 5A and 5B that the cold insulation region 4 is kept cold at a low temperature.
[0026]
According to the configuration as described above, since the cool air is discharged from the duct 2 in a breeze state, the cool air is not blown to the food material 3 and the cool air is blown to the raw tuna 3 a arranged in the cold insulation region 4. As a result, the surface layer portion of the raw tuna 3a is dried and the surface layer portion of the frozen tuna 3a is prevented from being thawed by blowing cold air on the frozen tuna 3a, and the air above the cold insulation region 4 is entrained. Since the cool air can be efficiently kept at a low temperature by blowing cool air to the cold insulation region 4 while suppressing cold air, and the cold air is discharged from the entire circumferential surface of the duct 2, the nozzle is partially It becomes easy to discharge in a light wind state compared with what is provided.
[0027]
Further, the duct 2 is disposed in the lower part of the room 1, particularly in the vicinity of the cold insulation region 4 from the floor surface 11 to the height of the upper end portion of the food 3 placed on the floor surface 11 (60 cm in this embodiment). Therefore, compared with the case where the duct 2 is disposed near the ceiling 13, it is possible to prevent cold air from being blown from above the operator's head and lowering the operator's perceived temperature to deteriorate workability. Moreover, it is not necessary to cool the entire room 1 and the cooling efficiency is good, that is, the power consumption can be kept low.
[0028]
In the present embodiment, the duct 2 is disposed at a height of about 70 cm from the floor surface 11, but if there is a possibility that the operator may contact the duct 2 and damage the duct 2, this is the case. What is necessary is just to arrange | position the duct 2 upwards . For example, by disposing the duct 2 at a height of about 2 m50 cm from the floor surface 11, it is possible to eliminate the possibility that an operator will be in contact with the duct 2 and damage it, and improve the cooling efficiency without cooling the entire room 1. In addition, cold air is blown from the overhead and the temperature of the operator's sensation does not decrease.
[0029]
In addition, as mentioned above, the cold storage facilities as described above may be applied not only to the wholesale market room 1 (including warehouses) but also to other rooms 1. In addition to 3a, other fresh fish, fresh vegetables and the like that require freezing or refrigeration may be used.
[0030]
【The invention's effect】
As described above, in the invention described in claim 1 of the present invention, it is a cold insulation facility that keeps food placed on the floor surface of a sealed room in a substantially aseptic condition, and is provided on the side wall surface of the room. along the air can be discharged duct that sterilization consists cylindrical filter is disposed in a lower portion thereof, food from the floor by discharging cool air sterilization from duct breeze state by blowing cold air into the duct Because the cold air is discharged from the duct in a breeze state, the cold air is no longer blown to the food, and the cold air is blown to the raw tuna placed in the cold region. This prevents the tuna surface layer from drying out and the frozen tuna from being blown with cold air to prevent the frozen tuna surface layer from thawing and prevents air from being trapped above the cold storage area. While keeping cold It is possible to maintain the cold region efficiently cold by blowing cold air. In addition, since the duct is arranged along the side wall surface of the room at the lower part thereof, compared to the duct arranged near the ceiling, cold air is blown from above the operator's head so that the temperature of the operator can be felt. It is possible to prevent the workability from being lowered and the workability is not deteriorated, and it is not necessary to cool the whole room, and the cooling efficiency is good, that is, the power consumption can be kept low. Since the duct is formed by the filter, there is almost no dust from the duct, and substantially aseptic cold air is discharged.
[0031]
In addition, in the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the cool air is discharged from the entire peripheral surface of the duct, it becomes easy to discharge the cool air in a breeze state.
[0032]
In the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the cool air is discharged from the duct at a speed of 0.05 to 0.1 m / s. It is possible to reliably prevent the surface layer portion of the raw tuna from being dried and the surface layer portion of the frozen tuna from being thawed by the cold air being blown to the frozen tuna.
[0033]
In the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the duct is disposed in the vicinity of the height of the upper end portion of the cold insulation region, so that only the cold insulation region is provided. Cooling air can be sent to the chiller, and the cooling efficiency is further improved.
[Brief description of the drawings]
FIG. 1 is a side view illustrating an embodiment of the present invention.
FIG. 2 is a perspective view of the same as above.
FIG. 3 is a perspective view of the whole of the above. FIG. 4 is a perspective view of the inside of the room.
5 shows the temperature distribution of the room in the same as above, (a) is the temperature distribution in the cross section indicated by the arrow A in FIG. 2, (b) is the temperature distribution in the cross section indicated by the arrow B in FIG. .
FIG. 6 is a perspective view of the interior of a conventional room.
[Explanation of symbols]
1 Room 11 Floor 12 Side Wall 2 Duct 3 Food 4 Cold Storage Area

Claims (4)

It is a cold insulation facility that keeps food placed on the floor surface of a sealed room in a substantially aseptic condition, and is capable of discharging sterilized air consisting of a cylindrical filter at the bottom along the side wall surface of the room the duct was arranged, characterized in that by forming a low-temperature cold region by blowing cold air into the duct from the floor by discharging cool air sterilization from duct light winds to the upper end portion of the selected foodstuff And cold insulation equipment.   The cold insulation equipment according to claim 1, wherein cold air is discharged from the entire circumferential surface of the duct.   The cold insulation equipment according to claim 1 or 2, wherein cold air is discharged from the duct at a speed of 0.05 to 0.1 m / s.   The cold insulation equipment according to any one of claims 1 to 3, wherein the duct is disposed in the vicinity of the height of the upper end portion of the cold insulation region.

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