JP2643032B2 - Food cold storage equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature storage device for food, and more particularly to a low-temperature storage device capable of storing food for a long period of time by utilizing the low temperature in winter in a cold region and moving the storage room in a low temperature state. .

[0002]

2. Description of the Related Art As one type of low-temperature storage of food, the use of low temperature in winter in a cold region has been used for a long time, and as a simple storage device, a space for storing food in the ground is provided. Food is stored at low temperature for a long time by the latent heat and sensible heat of the frozen soil formed on the outer periphery of this space.

Meanwhile, in this type of storage device, a device using a heat pipe has been proposed as a means for forming a frozen soil layer on the outer periphery of a food storage space at an early stage. One example is disclosed. The low-temperature storage device disclosed in this publication includes a water-impermeable heat-insulating layer provided in the ground, a food storage room provided inside the heat-insulating layer, and And a heat pipe whose lower part penetrates into the ground. However, this kind of low-temperature storage device has the following technical problems.

[0004]

That is, in the low-temperature storage device disclosed in the above-mentioned publication, food is stored in a storage room provided in the ground, so that the low-temperature storage food is shipped in winter. If it does, it must be taken out of the storage room and transferred to a low-temperature truck for transportation, etc.
Such an operation was very troublesome. The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a food which can be transported as it is in a stored state and which can be kept at a low temperature for several days during the transportation period. It is to provide a low-temperature storage device.

[0005]

In order to achieve the above object, the present invention provides a low-temperature storage device having an ice room and a food storage room surrounded by a heat insulating material. A detachable heat exchanger is provided between them. A first heat exchange pipe arranged from a lower side of the ice chamber to an upper side of the food storage chamber;
It can be constituted by two systems: a second heat exchange pipe arranged from an upper side of the ice compartment to a lower side of the food storage compartment. The first heat exchange pipe and the second heat exchange pipe have a pair of branch paths provided in the middle of the path,
A direction switching unit and an air moving unit may be provided in each of these branch paths.

[0006]

According to the low-temperature food storage device having the above-described structure, the heat exchanger provided between the ice compartment and the food storage room is detachable, so if the heat exchanger is removed, the food can be stored. This can be mounted on a transport vehicle while being stored in the storage room.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 8 show one embodiment of a low-temperature food storage device according to the present invention. The low-temperature storage device shown in FIG. 1 includes an ice compartment 10 and a food storage compartment 12 whose outer periphery is surrounded by a heat insulating material. The ice compartment 10 and the food storage compartment 12 are connected by a detachable heat exchanger 14 provided between them.

As shown in FIG. 3, trays 10a stacked in a step shape are installed in the ice chamber 10, and each tray 10a contains, for example, water in which a predetermined amount of salt is dissolved. This water turns into ice 10b when the outside temperature becomes low. In the food storage room 12, the food can be shipped, for example, the food 12a stored in a cardboard box,
For example, many potatoes are stored.

In this embodiment, the heat exchanger 14 comprises a first heat exchange pipe 14a disposed from the lower side of the ice compartment 10 to the upper side of the food storage compartment 12, and the ice compartment 10
And a second heat exchange pipe 14b arranged from the upper side to the lower side of the food storage room 12. Each of the heat exchange pipes 14a and 14b is made of vinyl chloride, and has a large number of through-holes in the ice compartment 10 and the food storage compartment 12, respectively, and is a perforated pipe. The sum of the areas of the holes of the perforated tube is substantially equal to the cross-sectional area of the pipe.

The first and second heat exchange pipes 14
At the intermediate position between a and b, branch paths 14c and 14d are provided which branch into a forked shape and merge again. As shown in FIG. 5 and FIG. 6, electromagnetic shutters D1 to D4 and fans F1 to F4 are installed in the branch paths 14c and 14d, respectively. These electromagnetic shutters D1 to D4 and fans F1 to F4 are connected in series and controlled by temperature switches TH1 to TH4 installed in the upper and lower portions of the food storage room 12, as shown in FIG. Is performed.

The structure in which the heat exchanger 14 is detachable is, for example, a branch path 14c of the heat exchange pipes 14a and 14b.
A connection portion of a bolt and a nut is provided between the storage room 12 and the food storage room 12 so that a part of the pipes 14a and b remains in the storage room 12 or the pipes 14a and b are connected to the storage room 12 side. May be configured so as to extract the entirety from the object.

FIG. 8 shows an example of the control. In the example shown in the figure, the temperature switches TH1 and TH2 on the upper side of the food storage room 12 are turned on at 4 ° C., turned off at 2 ° C., and the temperature switches TH3 and 4 on the lower side are turned off at 2 ° C.
It is set to be FF and to be ON at 0 ° C.
Also, the ON / OFF of the upper temperature switches TH1 and TH2.
In this state, the electromagnetic shutters D1, 4 and the fans F1, 4 are stopped from driving, and the lower temperature switch TH
The drive of the electromagnetic shutters D2, 3 and the fans F2, 3 is stopped in the ON and OFF states of the switches 3, 4.

If the temperature on the upper side of the food storage room 12 is higher than 4 ° C., the electromagnetic shutters D 1 and 4 and the fans F 1 and 4 are driven, and the first heat exchange pipe 14 a
Is in a state of taking in cool air from the lower side of the ice compartment 10 and supplying it to the upper side of the food storage chamber 12, and the path of the second heat exchange pipe 14b is
2 serves as a path for taking in the air inside from the lower side and discharging it to the upper side of the ice compartment 10.

On the other hand, when the temperature on the lower side in the food storage room 12 is lower than 0 ° C., the electromagnetic shutters D2, 3 and the fans F2, 3 are driven, and the first heat exchange pipe 14a
Is a path for taking in air inside the food storage room 12 from the upper side thereof and discharging the air to the lower side of the ice room 10,
The path of the second heat exchange pipe 14b enters a state where relatively high-temperature cold air is taken in from the upper side of the ice compartment 10 and supplied to the lower side of the food storage room 12.

FIG. 8 shows a combined state of the electromagnetic shutters D1 to D4 and the fans F1 to F4 which are stopped in accordance with the state of the temperature switches TH1 to TH4. By controlling as shown in FIG. The temperature in the food storage room 12 is 0
~ 4 ° C.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a low-temperature storage device according to the present invention.

FIG. 2 is a cross-sectional view of the storage device.

FIG. 3 is an explanatory diagram of an ice compartment of the storage device.

FIG. 4 is an explanatory diagram of a food storage room of the storage device.

FIG. 5 is an explanatory view of a main part of a first heat exchange pipe of the storage device.

FIG. 6 is an explanatory view of a main part of a second heat exchange pipe of the storage device.

FIG. 7 is an explanatory diagram of a layout of a temperature switch in a food storage room of the storage device.

FIG. 8 is an explanatory diagram of a state in which the electromagnetic shutter and the fan are stopped when the temperature of the food storage room of the storage device is controlled.

[Explanation of symbols]

 10 ice room 12 food storage room 14 heat exchanger 14a first heat exchange pipe 14b second heat exchange pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (73) Patentee 000140982 Magumi Co., Ltd. 2-58-8 Kitaaoyama, Minato-ku, Tokyo (72) Inventor Kazuyuki Ouchi 2-1-1 Toranomon, Minato-ku, Tokyo Mitsui OSK Lines Within the Ship Co., Ltd. (72) Inventor Hiroshi Hachinohe 3-3-7 Kita 1 Jo Nishi, Chuo-ku, Sapporo, Hokkaido Inside Obayashi Gumi Sapporo Branch (72) Inventor Shoichi Yokochi 1-chome, Minami 2-Jo Higashi, Chuo-ku, Sapporo, Hokkaido Kanefuchi Chemical Industry Co., Ltd. Hokkaido Sales Office (72) Inventor Masatoshi Sasaki 1-2-17 Irnai, Otaru, Hokkaido Ohira Industry Co., Ltd. (72) Inventor Akihide Imamura 2-5-8 Kitaaoyama, Minato-ku, Tokyo (56) References JP-A-63-135764 (JP, A) JP-A-61-27470 (JP, A) JP-A-63-116871 (JP, U)

Claims (3)

(57) [Claims] 1. A low-temperature storage device comprising an ice room and a food storage room surrounded by heat insulating material, wherein a detachable heat exchanger is provided between the ice room and the food storage room. Food cold storage. 2. The heat exchanger includes a first heat exchange pipe arranged from a lower side of the ice compartment to an upper side of the food storage room, and a first heat exchange pipe arranged from an upper side of the ice compartment to a lower side of the food storage room. The cold food storage device according to claim 1, further comprising a second heat exchange pipe disposed. 3. The first heat exchange pipe and the second heat exchange pipe have a pair of branch paths provided in the middle of the path, and a direction switching means and air are provided in each of the branch paths. 3. The low-temperature food storage device according to claim 2, wherein a moving means is provided.