JPH0512699Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention relates to constant temperature storage, and more specifically, it is used to preserve fresh foods such as vegetables and fresh fish within a certain narrow optimum storage temperature range. This relates to the improvement of constant temperature storage such as ice storage, refrigerators, and freezers for the purpose of.

[Prior Art] This type of general storage is equipped with a cooler connected to a refrigerator, control equipment for temperature and humidity control, etc. There is a known method in which the cooler is controlled and the cooler is divided into parts to sequentially defrost the air.

[Problems that the invention aims to solve] However, in conventional storage, it is necessary to control the refrigerator to maintain a constant temperature inside the warehouse, so it is necessary to use special refrigerators and control equipment. . Further, since the control is complicated and highly accurate technology is required, it is not practical as a widespread type, and furthermore, there is a problem that the entire device becomes large. Therefore, there is currently a demand for the development of a compact storage container with easy temperature and temperature control. One possible solution to this problem is to install a circulation fan in the communication area between the supply air duct and the exhaust duct in the storage room to force the cooling air to flow diagonally into the storage room using wind pressure. However, depending on the storage location of the items to be cooled, the wind speed and volume may vary, resulting in uneven cooling. In addition, in order to improve cooling efficiency, it is possible to configure a part of the intake duct with a cold storage wall filled with a cold storage agent to keep the cooling air within a predetermined temperature range, but in this case, the circulation fan motor and There is a problem in that storage temperature increases due to heat generation from the bearing.

[Means for solving the problem] This invention was created in view of the above circumstances, and in order to solve the above technical problem, it is possible to control the ON/OFF operation of the refrigerator without using complicated control means. The purpose of the present invention is to provide a low-temperature storage chamber which is characterized by being able to maintain the temperature within a predetermined range and preventing the storage temperature from rising due to heat generation from a circulation fan that supplies cold air into the storage chamber. be.

That is, this invention forms the cold air outlet and air suction port of the refrigerator on the ceiling or side wall of the storage main body which is insulated, and also supplies the storage space in the storage main body with the cold air blowout port and the air suction port. In a low-temperature storage warehouse that is connected by an air duct and an exhaust duct, a part of the air supply duct in which the circulation fan is installed is arranged parallel to the ceiling or side wall of the storage main body, and at least two surfaces of the air supply duct are in contact with the cold air. Consisting of a pair of plate-shaped cool storage bodies, a detour is formed on the end side of the plate-shaped cool storage body away from the cold air outlet, and the plate-shaped cool storage body and the exhaust duct side face each other with respect to the storage space. The object of the present invention is to provide a low-temperature storage facility characterized in that perforated plates are arranged in parallel at appropriate intervals on at least the storage space side of the plate-shaped cool storage body.

In this invention, the perforated plate need only be provided at least on the side of the cold air outlet, and can be provided, for example, on the side wall or ceiling of the storage body. Further, in addition to the perforated plate on the side of the cold air outlet, it is preferable that a second perforated plate facing this perforated plate is provided and that the second perforated plate constitutes the exhaust duct. Further, the perforated plate may be of any type as long as it has a plurality of holes for supplying the cooling air supplied from the air supply duct into the storage space, but it is preferably located away from the detour. It is preferable to form a hole whose diameter gradually increases in accordance with the direction. Further, the second perforated plate may be of any type as long as it exhausts the air in the storage space to the exhaust duct side, but preferably the hole diameter becomes gradually larger toward the air suction port side. It is better to have a hole formed by drilling the hole. In addition,
The above-mentioned plate-shaped cold storage body comes into contact with the cold air from the refrigerator and absorbs the rise and fall in temperature associated with the ON/OFF operation of the refrigerator.
As long as it is controlled, it may be one set or multiple sets, but preferably, a plurality of rectangular hollow members with a cold storage agent sealed in the hollow part and a plurality of cooling fins protruding from the outer surface are made of a flat shape. It is better if the structure is connected in a shape.

[Effect] The above technical means works as follows.

As mentioned above, a part of the air supply duct in which the circulation fan is installed is constructed of a plate-shaped cool storage body that is arranged parallel to the ceiling or side wall of the storage body and has both sides in contact with cold air, and A detour is formed on the end side of the cold storage body that is remote from the cold air outlet side, and an appropriate interval is formed at least on the storage space side of the plate-shaped cold storage body among the plate-shaped cold storage body and the exhaust duct side that face each other with respect to the storage space. By arranging perforated plates in parallel, the cold air flowing through the air supply duct from the outlet of the refrigerator is kept cool by contacting the plate-shaped cold storage body by the circulation fan, and then enters the storage space through the perforated plates. The air that is supplied and used to keep the stored items cold in the storage space is drawn into the intake port of the refrigerator through the exhaust duct, and then cooled again and sent from the outlet of the refrigerator into the air supply duct. It is supplied and used to keep stored items cold.

[Example] An example of this invention will be described below based on the drawings.

◎ First Embodiment Figure 1 is a sectional view showing the first embodiment of the low temperature storage of this invention, and Figure 2 is a plan view showing a part of it in cross section. Main body 10 and ceiling part 12 of this storage main body 10
A refrigerator unit 20 consisting of an evaporator 14, a compressor 16, and a condenser 18 installed in
(hereinafter referred to as a refrigerator), a cold air outlet 24 and an air suction port 26 defined by a guide plate 22 on the inside of the refrigerator 20, and a storage main body 1
Air supply ducts 3 each communicate with a storage space 28 that accommodates stored items (not shown) formed in the interior of the storage space 28.
0 and an exhaust duct 32. In this case, a part of the air supply duct 30 and an exhaust duct 32 are formed by the ceiling part 12 and a heat insulating board 13 arranged parallel to the ceiling part 12, and a part of the air supply duct 30 is formed by the storage area. It is composed of a plate-shaped cool storage body 40 arranged in parallel with one side wall 15 of the main body 10 at an appropriate interval, and the end side (lower end side) of the plate-shaped cool storage body 40 remote from the cold air outlet 24 side. Detour section 34
is formed. Further, perforated plates 36 (hereinafter referred to as first perforated plates) are arranged in parallel at appropriate intervals on the storage space 28 side of the plate-shaped cool storage body 40. On the other hand, on the side facing the first perforated plate 36, a second perforated plate 38 is arranged in parallel with the other side wall 17 of the storage main body 10 at an appropriate interval.
constitutes part of.

A circulation fan 50 formed of a cross-flow type fan such as a Sirotskov fan is installed in a part of the interior of the air supply duct 30 formed as described above (corner part of the storage main body 10), and is used to cool the air. The cold air from the machine 20 is transferred to the storage space 28 via the air supply duct 30.
It is designed so that it can be forcibly pumped inside.

In addition, as shown in FIG. 3, the first perforated plate 36 includes a large number of holes 37 whose hole diameters gradually increase in the upward direction from the detour portion 34 on the lower end side.
37... is drilled. The second perforated plate 3
8 also corresponds to the first perforated plate 36, and has a large number of hole portions 39, 3 whose hole diameter gradually increases from the bottom to the top.
9... is drilled (see Figure 3).

On the other hand, as shown in FIG. 4, the plate-shaped cool storage body 40 has cooling fins 4 arranged at appropriate intervals on both sides of a rectangular hollow part 44 that encloses a cool storage agent 42.
6, 46... are provided protrudingly, and the rectangular hollow part 4
Cooling and connecting fins 48 protruding from both ends of 4,
A plurality of single cool storage bodies 41, 41 having 48 . . . are connected to each other in a plane by fixing means such as rivets (not shown). In this case, although the case where there is one set of plate-shaped cool storage bodies 40 has been described, it does not necessarily have to be one set, and there are multiple sets of plate-shaped cool storage bodies 40.
may be arranged in parallel.

It is also possible to arrange a heater (not shown) near the suction port side of the refrigerator 20 of the exhaust duct 32, and this heater is used to raise the return cold air when the temperature outside the refrigerator is low in winter. Warming refrigerator 2
0 ON/OFF operation can be effectively used. In addition, since it is necessary to prevent outside air from entering the entrance portion 10a provided on the side wall 19 of the storage main body 10 when the door body 10b is opened, an air curtain using cold air from the refrigerator 20 or It is desirable to provide a curtain-shaped outside air shield (not shown) or the like at the inlet portion 10a.

In the low-temperature storage of this invention configured as described above, the cold air supplied from the outlet 24 of the refrigerator 20 is forcibly sent into the air supply duct 30 by the circulation fan 50, and then The detour section 3 is kept cool while in contact with the cool storage body 40.
4 and the holes 37, 37 of the first perforated plate 36...
The liquid is almost uniformly supplied into the storage space 28 through the storage space 28. Therefore, the stored items (not shown) placed in the storage space 28 are kept cool by being exposed to cold air on average.
The cold air that has kept the stored items cold is discharged into the exhaust duct 32 through the holes 39, 39, .
The air is supplied to the air supply duct 30 in a cooled state again, and is kept cold.

◎ Second Embodiment FIG. 5 is a sectional view showing a second embodiment of this invention, in which the refrigerator is installed on the side wall of the storage body. That is, the refrigerator 20 is installed on one side wall 15 of the storage main body 10 which cooperates with the plate-shaped cool storage body 40 to constitute the air supply duct 30, and the refrigerator 20 is installed on one side wall 15 of the storage main body 10, which cooperates with the plate-shaped cool storage body 40 and constitutes the air supply duct 30. air duct 3
This is a case in which a circulation fan 50 is disposed inside 0. The other parts are the same as those in the first embodiment, so the same parts are given the same reference numerals and the explanation thereof will be omitted.

◎ Third Embodiment Figure 6 is a cross-sectional view showing the third embodiment of this invention, in which a refrigerator is installed on the wall of the main body of the storage room, and a plate-shaped cold storage body is arranged on the ceiling side to collect cold air. This is a case where the supply and exhaust of air is performed from the ceiling toward the floor. That is, the refrigerator 20 is installed on one side wall 15 of the storage main body 10, which cooperates with the heat insulating board 13 to constitute a part of the air supply duct 30 and the exhaust duct 32, and the refrigerator 20 is installed on the lower surface side of the ceiling part 12 at appropriate intervals. The plate-shaped cool storage bodies 40 are arranged in parallel at intervals, and the first perforated plates 36 are arranged in parallel at appropriate intervals on the lower surface of the plate-shaped cool storage bodies 40.
This is a case where a second perforated plate 38 facing the perforated plate 36 is arranged in parallel with the floor 11 at an appropriate interval by interposing a spacer (not shown) between the second perforated plate 38 and the floor part 11.

By arranging the plate-shaped cold storage bodies 40 in parallel on the ceiling part 12 side as described above, and arranging the first perforated plate 36 and the second perforated plate 38 on the ceiling part 12 and floor part 11 sides, Cold air can be supplied more efficiently than in the first and second embodiments in which cold air is transferred horizontally.

Note that the other parts of the third embodiment are the same as those of the first and second embodiments, so
Identical parts are given the same reference numerals and their explanations will be omitted.

◎ Fourth Embodiment FIG. 7 is a sectional view showing a fourth embodiment of this invention, in which the perforated plate is disposed only on the cold air outlet side. That is, the refrigerator 20 is installed on the ceiling part 12 of the storage main body 10, the plate-shaped cool storage body 40 is arranged on the side wall 15 side, and the detour-shaped air supply duct 30 is installed on the storage space 28 side of this plate-shaped cool storage body. A heat insulating board 13a with an open upper end is provided to form a heat insulating board 13a, and a side wall 17 is provided on the side wall 16 facing the heat insulating board 13a.
A heat insulating board 13b with an open bottom end is provided to form the exhaust duct 32 in cooperation with the heat insulating board 13b, and an appropriate interval is provided on the storage space side of the plate-shaped cool storage body 40 on the lower surface side of the heat insulating board 13 on the ceiling side. This is a case where the first perforated plate 36 is provided.

With this configuration, the cool air bypasses the air supply duct 30, flows vertically downward from the first perforated plate 36, and is exhausted as an oblique and/or horizontal flow near the floor surface. Further, in the fourth embodiment, since the number of perforated plates can be reduced to one, it is possible to improve workability. In addition, in the fourth embodiment, a first perforated plate 3 is provided on the ceiling of the storage main body 10.
Although a case has been described in which a perforated plate 6 is provided, this structure is not necessarily required, and the first perforated plate 36 may be provided on the side wall portion of the storage main body 10.

As explained above, according to the constant-temperature storage of this invention, a part of the air supply duct in which the circulation fan is installed is arranged in a plate shape parallel to the ceiling or side wall of the storage main body, and both sides of which are in contact with cold air. A detour is formed on the end side of the plate-shaped cool storage body remote from the cold air outlet, and at least the plate-shaped cool storage body and the exhaust duct side facing each other with respect to the storage space are configured with a cold storage body. Since perforated plates are arranged in parallel at appropriate intervals on the storage space side of the body, the following effects can be obtained.

1. The temperature rise and fall of the cooling air due to the ON/OFF operation of the refrigerator is reliably absorbed, and cooling air at a constant temperature can be supplied into the storage space.

2. The perforated plate allows the cooling air in the storage space to move horizontally or vertically with uniform wind speed and pressure, making uniform cooling possible.

3. Since the ceiling or side walls are made of thin perforated plates, the space in the storage space can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing a first embodiment of the low temperature storage of this invention, FIG. 2 is a plan view showing a part of FIG. 1 in cross section, and FIG. 3 is a cross-sectional perspective view of the first embodiment. FIG. 4 is a sectional view showing a plate-shaped cool storage body in this invention, FIG. 5 is a sectional view showing a second embodiment of this invention, FIG. 6 is a sectional view showing a third embodiment of this invention, and FIG. The figure is a sectional view showing a fourth embodiment of this invention. Description of symbols, 10...Storage body, 11...Floor, 12...Ceiling, 15, 17...Side wall, 20
... Refrigerator, 28 ... Storage space, 30 ... Air supply duct, 32 ... Exhaust duct, 34 ... Detour section, 3
6... First perforated plate, 37, 39... Hole, 38
...Second porous plate, 40...Plate-shaped cool storage body, 42...
... Cold storage agent, 44 ... Rectangular hollow part, 46 ... Cooling fin, 50 ... Circulation fan.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cold air outlet and an air inlet for a refrigerator are formed on the ceiling or side wall of an insulating storage body, and a storage space in the storage body, the cold air outlet and air In a constant temperature storage which is connected to the suction port by an air supply duct and an exhaust duct, a part of the air supply duct in which the circulation fan is installed is arranged parallel to the ceiling or side wall of the storage main body, and both sides are The plate-shaped cold storage body is composed of at least one set of plate-shaped cold storage bodies that are in contact with cold air, and a bypass portion is formed on the end side of the plate-shaped cold storage body that is remote from the cold air outlet, and the plate-shaped cold storage bodies face each other with respect to the storage space. 1. A constant-temperature storage, characterized in that perforated plates are arranged in parallel at appropriate intervals on at least the storage space side of the plate-shaped cool storage body among the body and exhaust duct sides. (2) The constant temperature storage according to claim 1, wherein a part of the exhaust duct is constituted by a second perforated plate facing the perforated plate. (3) The constant temperature storage according to claim 1, wherein the perforated plate has holes whose diameters gradually increase in the direction away from the detour. (4) A constant temperature storage according to claim 3 of the utility model registration claim, wherein the second perforated plate is formed with holes whose diameter gradually increases toward the air suction port side. . (5) The plate-shaped cold storage body is characterized by being formed by connecting a plurality of rectangular hollow members in a planar manner, each of which has a cold storage agent sealed in its hollow portion and has a plurality of cooling fins protruding from its outer surface. A constant temperature storage according to claim 1 of the utility model registration claim.