JP2004076991A - Cold reserving facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cold reserving facility capable of preventing the operability and the efficiency of cold reserving from being decreased by the lowering of an operator's feeling temperature, while also preventing the freshness and quality of foods from being degraded by direct blowing of cold air, and keeping the foods nearly free of bacteria. <P>SOLUTION: In the cold reserving facility, foods 3 placed on the floor face 11 of a room 1 are kept cold and nearly free of bacteria. A duct 2 made of a cylindrical filter capable of discharging sterilized air is disposed on the surface of a sidewall 12 of the room 1 and in the lower part of the room 1. Cold air is fed into the duct 2. The cold air sterilized is discharged as breeze from the duct 2 to create a low-temperature cold reserving area 4 from the floor face 11 to the height of the upper end of the foods 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a refrigerator for keeping food placed on a floor of a room in a substantially aseptic state.
[0002]
[Prior art]
BACKGROUND ART Conventionally, foods that need to be frozen or stored at a low temperature may be placed in a room that can be kept cool. For example, when extorting foods that need to be frozen or refrigerated such as fresh fish and fresh vegetables at the wholesale market, arrange the plurality of ingredients side by side in the room of the wholesale market, and the middleman will carry it out as a jig. Things. Hereinafter, the case where the ingredients are tuna will be described.
[0003]
Tuna to be auctioned is transported to a wholesale market in the form of ice-stuffed raw tuna or frozen tuna. Since auctions are usually held around 4 am to 5 am, the tuna brought in is arranged in the room where the auction of the wholesale market takes place each time it arrives around 00:00 am. The room in which the auction is performed is a closed room having not only a floor surface but also a ceiling and surrounding side walls, but it is not particularly required to be sealed as such.
The tuna is placed on the floor of this room via a pallet and placed side by side. The tuna is placed in the room where the auction of the wholesale market is held for 4 to 5 hours, so that this room is provided with a cooling facility.
[0004]
As shown in FIG. 6, the cold insulation equipment is configured such that an air conditioner and a duct 2 ′ are mounted on the ceiling 13 or the upper end of the side wall 12 of the room 1 or suspended from the ceiling 13. Then, cool air is discharged from the duct to cool the room and keep it cool.
[0005]
However, in such a cold storage facility, the duct for discharging the cool air is arranged at a position higher than the human body of the worker, and the cool air is blown out from above the worker's head, so the perceived temperature of the worker is low. The work efficiency is poor, and the whole room is cooled by discharging cold air from a duct located at a high position to keep the food placed on the floor cool, so that the cooling efficiency is poor ( That is, power consumption increases).
[0006]
Therefore, it is conceivable to arrange the duct at a lower position, but in this case, the discharged cool air will be sprayed on the food, and if the food is raw tuna, the surface layer of the tuna is dried, and if the frozen tuna is The surface layer of the tuna was thawed and the freshness and quality of the foodstuffs were reduced. Furthermore, it is preferable to keep the foodstuffs clean and to maintain a substantially aseptic condition. In particular, when the duct is arranged at a low position, it is necessary to remove the cool 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 an object of the present invention is to prevent deterioration in workability due to a decrease in the perceived temperature of an operator, to improve the cooling efficiency, and to blow cold air onto foodstuffs. It is an object of the present invention to prevent the deterioration of freshness and quality due to the above, and to provide a cooling device capable of keeping food materials in a substantially sterile state.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a cold insulation facility according to the present invention is a cold insulation facility for keeping foodstuffs 3 placed on a floor 11 of a room 1 in a substantially aseptic state, and a tube is provided on a side wall 12 of the room 1. A duct 2 made of a filter in the form of a filter and capable of discharging sterilized air is arranged at the lower part of the room 1, and cool air is blown into the duct 2 to discharge the sterilized cool air from the duct 2 in a breeze state to produce a floor surface. It is characterized in that a low-temperature cold storage region 4 is formed from 11 to the height of the upper end of the food material 3. With such a configuration, it is possible to prevent the freshness and quality of the foodstuffs 3 from being deteriorated due to the blowing of cold air to the foodstuffs 3 arranged in the cold storage area 4 and to entrain the air above the cold storage area 4. Thus, the cool air can be efficiently blown into the cool insulation region 4 to keep the cool insulation region 4 at a low temperature, and the cool air can be easily discharged in a weak wind state as compared with the cool air discharged from the nozzle. In addition, it is possible to prevent the cold air from being blown from above the worker and the worker's perceived temperature to be lowered and the workability to be deteriorated, and it is not necessary to cool the entire room 1 and the cooling efficiency is good. Things.
[0009]
Further, it is preferable to discharge the cool air from the entire peripheral surface of the duct 2. With such a configuration, it is easy to discharge cold air in a breeze state.
[0010]
Further, it is preferable to discharge the cool air from the duct 2 at a speed of 0.05 to 0.1 m / sec. With such a configuration, it is possible to reliably prevent the freshness and quality of the foodstuff 3 from being reduced due to the blowing of cold air to the foodstuff 3.
[0011]
In addition, it is preferable that the duct 2 is disposed in the vicinity of the height of the upper end portion of the cool insulation area 4. With such a configuration, it is possible to send cool air only to the cool-keeping area 4 and the cooling efficiency is further improved.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described based on an embodiment shown in the accompanying drawings. In the present embodiment, the cold storage facility of the present invention is described as being provided in the room 1 of the wholesale market, but is not particularly limited to this. Furthermore, in the present embodiment, the room 1 forms a substantially closed space inside by the floor surface 11, the ceiling 13, and the side walls 12, but is closed without the ceiling 13 and some side walls 12. The room 1 may not be. Hereinafter, a case will be described where the foodstuffs 3 are tuna 3a (frozen tuna and raw tuna), and the tuna 3a is arranged in the room 1 of a fish wholesale market and kept cool.
[0013]
The room 1 is provided in a wholesale market in order to perform auction in the present embodiment, and is roughly formed to have a width of 16 m, a depth of 19 m, and a height of 4.5 m. As shown in FIG. 3, the room 1 has four rooms arranged side by side. The front side is a stocking side where middlemen enter and leave, and the back side is a loading side where foodstuffs 3 (ie, tuna 3a) are carried in and out. It becomes.
[0014]
A plurality of doors (approximately 3 m or 5 m wide and 3 m high) and a plurality of shutters 14 which can be opened and closed are provided on the side wall 12a on the wholesale side of each room 1 for the wholesalers to enter and exit. On the side wall 12b on the carry-in side of each room 1, a carry-in entrance (approximate size is 7 m in width and 4 m in height) and a shutter 15 which can be opened and closed are provided one by one. Further, the side wall 12c in the depth direction of each room 1 may be provided with a passage (not shown) through which the room 1 adjacent to the room 1 can enter and exit.
[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 viewed from obliquely above, and FIG. 4 shows a perspective view of the inside of the room 1.
[0016]
As shown in FIG. 4, the tuna 3a is placed on the floor surface 11 through a scallops 5, but the tuna 3a is about 50 cm in height when laid horizontally, and the scallops 5 are about 10 cm 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 the present embodiment, a space from the floor surface 11 to a height of approximately 60 cm is defined as a cold insulation region 4 to be described later, and cool air is discharged to the cold insulation region 4 by the cool insulation equipment.
[0017]
Next, the cooling equipment will be described. In the room 1 described above, a duct 2 is provided as a cooling device, in the lower part of the room 1, particularly near a cooling region 4, and an air conditioner to which the duct 2 is connected is provided.
[0018]
The air conditioner is disposed outside or inside the room 1 to allow cool air to flow through the duct 2, and is mainly composed of a cooling unit such as a heat pump and a heat discharging unit, and a control unit. In the present embodiment, the air conditioner is of a water-cooled type in which a heat exchanging part performs heat exchange with cooling water. 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 to penetrate the side wall 12.
[0019]
The duct 2 is formed of 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 peripheral surface.
[0020]
In the present embodiment, the cylindrical filter is formed of a nonwoven fabric (a so-called “electrolytic nonwoven fabric”) formed by charging each polypropylene fiber having a diameter of about 2 μm into an “electric stone” shape by charging each fiber. Is done. This filter not only removes dust or the like by filtering with a fiber, but also removes fine dust that cannot be filtered with a fiber by adsorbing with a dendritic fiber. Further, since the filter is formed without using an adhesive, it has high chemical resistance (acid and alkali resistance), high water repellency, high water resistance, and flame retardancy.
[0021]
Since the duct 2 is formed by such a tubular filter, the air (cool air) discharged from the duct 2 can be almost aseptic with little dust.
[0022]
The duct 2 composed of such a cylindrical filter is disposed near the upper end of the above-described cold insulation area 4 of the room 1. In this embodiment, it is mounted at a position 70 cm above the floor 11 on the side wall 12 of the room 1. The duct 2 is connected to an air conditioner disposed inside the room 1, and cool air from the air conditioner is ventilated inside, and cool air is discharged from the entire peripheral surface. The cool air is discharged from the duct 2 in a breeze state (0.05 m to 0.1 m per second).
[0023]
In the room 1 provided with such cold insulation equipment, the tuna 3a is abutted. The tuna 3a is carried into the room 1 in a state of a raw tuna 3a packed with ice and in a chilled state or a frozen tuna 3a. The loading entrance formed in the side wall 12b on the loading side of the room 1 is opened, a truck is laid, and the raw tuna 3a and the frozen tuna 3a are lowered by the slide. Then, the tuna 3a is placed on the floor 11 of the room 1 and the tuna 3a is placed on the floor 5 and arranged.
[0024]
The tuna 3a is disposed in the above-described cold insulation region 4, that is, in a space approximately 60 cm from the floor 11 of the room 1, and the cool air from the duct 2 enters the cool insulation region 4 without so much entrainment of the air above the cold insulation region 4. The cold region 4 is kept at a low temperature.
In addition, an operator who brings the tuna 3a into the room 1 and places it on the floor 11 can perform work with good operability without lowering the perceived temperature because cold air is not blown from above.
[0025]
FIG. 5 shows an example of the room temperature distribution. FIG. 5A shows a temperature distribution in a cross section of the room indicated by an arrow A in FIG. 2, and FIG. 5B shows a temperature distribution in a cross section of the room indicated by an arrow B in FIG. The temperature at the time of measurement was about 25 ° C. on the floor, the cold air discharged from the duct 2 was 10 ° C., and the food 3a was a frozen tuna. It can be seen from FIGS. 5A and 5B that the cool region 4 is kept cool at a low temperature.
[0026]
According to the above configuration, 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 3a arranged in the cool keeping area 4. This prevents the surface layer of the raw tuna 3a from drying and prevents the surface layer of the frozen tuna 3a from being thawed by blowing cold air onto the frozen tuna 3a, and entrains the air above the cold insulation area 4. The cool air is blown to the cool insulation area 4 while suppressing the temperature, and the cool insulation area 4 can be efficiently kept at a low temperature. Further, since the cool air is discharged from the entire peripheral surface of the duct 2, the nozzle is partially out of the entire circumference. It becomes easier to discharge in a breeze state than that provided.
[0027]
In addition, the duct 2 is disposed in the lower part of the room 1, particularly in the vicinity of the cold insulation area 4 from the floor 11 to the height of the upper end of the food 3 placed on the floor 11 (60 cm in the present embodiment). Therefore, compared to the case where the duct 2 is disposed near the ceiling 13, it is possible to prevent the cool air from being blown from above the worker and lower the perceived temperature of the worker, thereby reducing the 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 suppressed low.
[0028]
In the present embodiment, the duct 2 is disposed at a height of about 70 cm from the floor surface 11. However, if there is a fear that an It is sufficient to dispose the duct 2 above. 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 fear that an operator may come into contact with the duct 2 and be damaged. The cooling efficiency is improved without cooling the entire room 1 and the cooling air is not blown from the overhead and the perceived temperature of the worker is not lowered.
[0029]
It should be noted that the above-mentioned cold insulation equipment may be applied not only to the room 1 (including the warehouse and the like) of the wholesale market but also to other rooms 1 as described above. In addition to 3a, other foods that need to be frozen or refrigerated, such as other fresh fish and fresh vegetables, may be used.
[0030]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is a cooling device for keeping food placed on a floor of a room in a substantially aseptic state, and a tubular filter provided on a side wall surface of the room. A duct capable of discharging sanitized air is disposed at the bottom of the room, and cool air is blown into the duct to discharge the sterilized air from the duct in a breeze state, and the height of the upper end of the food from the floor surface is increased. Since the low-temperature cold storage area was formed before, cold air is discharged from the duct in a breeze state, so that cold air is not blown to the foodstuffs, and the cold air is blown to the raw tuna arranged in the cold storage area. The surface layer of the tuna dries and the cold air blows on the frozen tuna to prevent the surface layer of the frozen tuna from thawing, and at the same time keeps the air above the cold storage area from getting caught in the cold storage area. Blow cool air The cold region can be efficiently kept at a low temperature. In addition, since the duct is located at the bottom of the room, compared to the case where the duct is located near the ceiling, cool air is blown from above the worker's head, lowering the worker's perceived temperature and improving workability. Can be prevented from becoming worse, and it is not necessary to cool the whole room, so that the cooling efficiency is good, that is, the power consumption can be kept low, and further, a duct is formed by a cylindrical filter. As a result, almost no dust is emitted from the duct, and substantially sterile cold air is discharged from the duct.
[0031]
According to the second aspect of the invention, in addition to the effect of the first aspect of the present invention, since the cool air is discharged from the entire peripheral surface of the duct, it is easy to discharge the cool air in a breeze state.
[0032]
According to the third aspect of the present invention, in addition to the effect of the first or second aspect of the present invention, since the cool air is discharged from the duct at a speed of 0.05 to 0.1 m / s, the cool air is discharged to the raw tuna. Can be reliably prevented from drying the surface layer of the raw tuna and blowing the cold air on the frozen tuna and thawing the surface layer of the frozen tuna.
[0033]
Further, 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 arranged near the upper end portion height of the cool insulation area, so that only the cool insulation area is provided. The cold air can be sent to the chiller, and the cooling efficiency can be 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 above.
FIG. 3 is an overall perspective view of the same as above. FIG. 4 is a perspective view of the inside of a room of the same as above.
5A and 5B show the temperature distribution of the room in the above, wherein FIG. 5A is a temperature distribution in a section indicated by an arrow A in FIG. 2 and FIG. 5B is a temperature distribution in a section indicated by an arrow B in FIG. .
FIG. 6 is a perspective view of the inside of a conventional room.
[Explanation of symbols]
1 Room 11 Floor surface 12 Side wall 2 Duct 3 Foodstuff 4 Cold insulation area

Claims (4)

This is a cooling device that keeps food placed on the floor of the room in a substantially aseptic condition, and a duct is provided at the bottom of the room that consists of a cylindrical filter on the side wall of the room and that can discharge the sterilized air. A cold air blower that blows cold air into the duct and discharges the sterilized cold air from the duct in a breeze state to form a low-temperature cold storage area from the floor surface to the height of the upper end of the food material; . 2. The cold insulation facility according to claim 1, wherein cool air is discharged from the entire peripheral surface of the duct. 3. The cold insulation facility according to claim 1, wherein the cool air is discharged from the duct at a speed of 0.05 to 0.1 m / sec. The cold insulation facility according to any one of claims 1 to 3, wherein the duct is disposed near a height of an upper end portion of the cold insulation area.

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