JPH04187971A - Cold accumulating thermal insulator - Google Patents

Abstract

PURPOSE:To obtain a thermal insulator having high economy and wide usage by providing a heat insulating member in which a vacuum heat insulator is arranged and a cold accumulator arranged in a cold accumulating room. CONSTITUTION:In a cold accumulating heat insulator, a cooler 18 cools a cold accumulator, and when a prescribed temperature is realized, a cold accumulator temperature detector 21 operates to control a freezing temperature to be within a prescribed temperature range. By this, inside of a cold accumulating room 17 is kept at a lower temperature than inside of a thermal insulating room 5, but heat exchange between the cold accumulating room 17 and the thermal insulating room 5 is limited to be low because of thermal insulation by a cabinet 2. On the other hand, when charge of a battery and thermal insulation of the thermal insulating room 5 are started at the same time of cold accumulating operation of the cold accumulator 20, a thermal insulating room temperature detector 11 is operated to drive a thermal insulating fan 10 so that cooled air is introduced into the cold accumulating room 17. This introduction of the air inside the thermal insulating room 5 into the cold accumulating room 17 is continued until the thermal insulating room 5 has a set temperature. As a result of this, even during a cold accumulating operation, both refrigerating thermal insulation and freezing thermal insulation can be obtained by controlling cooled air volume supplied to the thermal insulating room. Thus, a cold accumulating thermal insulator having wide usage and high ecomony can be obtained.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention performs a cold storage operation in a cold storage box in parallel with the cold storage operation of a cold storage agent, and is useful for storing products such as fresh foods and medicines that require refrigeration or freezing. The present invention relates to a cold storage type cold storage HK that can be used for transportation and also as a refrigerated refrigerator at bases.

BACKGROUND OF THE INVENTION In recent years, in addition to conventional refrigerator-freezers, small cold-storage refrigerators using cold storage agents have been used in the distribution of fresh foods.

The conventional cold storage type refrigerator mentioned above is, for example,
There is a cooling container as known from Japanese Patent No. 142664 and the like. The structure includes a storage box that stores a cold storage member, a box that defines a storage space for objects to be cooled and that houses the storage box, and first and second openings provided in the storage box. , a tamper part that opens and closes at least one of the first and second openings, and a control part that controls opening and closing of the tamper part, and the first opening covers the second opening. The parts and υ are also placed in high positions. Cooling of the storage space is performed by exchanging air between the cooled cold storage member and the storage space, and the amount of heat exchange with the cold storage member is controlled by opening and closing the tamper section. When the tamper is opened, air cooled by the cold storage material enters the storage chamber, and warm air in the storage space enters the storage box through the first opening. Due to natural convection, air circulates within the box and is stored. It cools the space.

Problems to be Solved by the Invention However, in the above conventional configuration, the partition member between the inside of the storage box and the inside of the box is not provided with a heat insulating material.
In the process of cooling and freezing the cold storage member, the inside of the box is simultaneously cooled via the partition member. There is no temperature control function inside the box, so the temperature inside the cooler can drop below 0°C. Since the goods to be transported cannot be stored in the box while the cold storage member is being cooled, the time when the cold storage H is used is limited to times other than when the cold storage member is being cooled, resulting in a short usage time and poor economic efficiency.

In addition, the storage box and cooling unit are functional parts, and repair in the event of a failure is difficult because it must be done inside the refrigerator.

Furthermore, since the storage box and the cooling unit occupy a large volume, there is a problem in that the amount stored in the cold storage box is reduced.

The present invention solves the above problems and is highly economical.
It is possible to provide a cold storage type refrigerator that can be used in a wide range of applications.

Means for Solving the Problems In order to solve the above problems, the cold storage type cold storage box of the present invention includes a cold storage box main body, a cold storage chamber and a cold air introduction chamber configured in the cold storage box main body, a cold storage fan, and the cold storage box main body. a machine room that is disposed and supported at the bottom of the refrigerator main body and is removable; a refrigerator unit and a cold storage room that are built into the machine room and separated by a heat insulating wall;
Said machine room.

and a condenser closely fixed to the inner wall of the cold storage chamber-side exterior, and a cooler tightly fixed to the inner wall of the cold storage chamber-side interior;
The heat insulating member includes an X-nitrogen heat insulating material that presses and brings the condenser and the cooler into close contact with the inner walls of each, and a cool storage agent is placed inside the cool storage chamber.

Function: With the above-described configuration, the present invention is capable of maintaining the set temperature within the cold storage chamber at the same time as the cold storage agent is being frozen even when the cold storage chamber is in cold storage operation. This eliminates the need to purchase and maintain refrigerated storage, makes effective use of the installation storage space within the base, reduces the amount of work required to transport goods in and out of the transport base (cold storage area), and As a result, quality can be ensured by maintaining the temperature of the transported goods.

In addition, by using vacuum insulation material, the condenser and cooler are closely attached to the inner wall to ensure heat transfer performance, and by achieving high insulation between them, the wall thickness can be minimized and the volume of the machine room can be reduced. The storage capacity of the main body is increased, and the cold storage main body and machine room can be separated, making it easy to repair or replace the cold storage main body or machine room due to damage.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes a cold storage box body, which is composed of a cabinet 2 containing a heat insulating material, a door 3, and a cabinet cold room 6. There is an air inlet 6 at the bottom of the cooler body 1.
and an outflow lower are provided. Further, above the inlet 6, a cold air introduction chamber 9 is formed by the inner wall of the cold storage box main body 1 and the duct 8, and a cooling fan 1Q is arranged at the top of the cold storage chamber 5 at the end of the cold air introduction chamber 9. . Reference numeral 11 denotes a cold storage room temperature detector that is attached to the top of the cold storage room 5 to detect the cold storage temperature inside the cold storage room 5 and to control the operation of the cold storage fan 10.

Reference numeral 12 denotes a removable cabinet which is provided in the lower part of the cold storage main body 1 in a machine room and holds the cold storage main body 1. 13 is a heat insulating member such as polyurethane foam provided in the machine room 12. 14 is a refrigerator unit installed inside the machine room 12. Reference numeral 15 denotes a compressor, and 16 a condenser, which stores 1.0 ml of air.A refrigerator unit 14 is constituted by a capillary cheep (not shown) on the inner wall of the exterior of the cold room side.

Reference numeral 17 denotes a cold storage chamber installed inside the machine rooms 1 and 2, and is separated from the refrigerator unit 14 by a heat insulating wall. 1
Reference numeral 8 denotes a cooler, which is a vacuum insulation material having a heat contact effect with the refrigerator unit 14, and connects the condenser 16 in the insulation member 13 and the cooler 1.
8 and each inner wall to make close contact. 2o is a cold storage agent which is frozen by the cooler 18. A cold storage agent temperature detector 21 detects freezing of the cold storage agent 20 and controls the freezing temperature. 22 is the power cord, 23 is the battery and the cooling fan 1
0 driving source.

As shown in the electrical wiring diagrams in FIGS. 2 and 3, the cold storage fan 10 and the cold storage room temperature sensor 1-51 are connected in series and connected to the battery 23. Further, the compressor 16 is connected to a commercial power source via a cool storage agent temperature detector 21.

The operation of the cold storage type refrigerator constructed as described above will be described below with reference to the drawings.

First, at a base, pace, etc., power is plugged into the power cord 22 and the compressor 15 is operated to perform cold storage operation of the cold storage agent 20. The cold storage agent 20 is cooled by the cooled cooler 18, and the cold storage agent 20 is completely cooled and solidified.
When the temperature reaches a predetermined temperature (for example, about -30°C) lower than the freezing temperature of the compressor 1, the refrigerant temperature sensor 21 is activated and the compressor 1
Stop the operation of 6. Thereafter, the compressor 15 is repeatedly stopped and operated, and the freezing temperature of the cool storage agent 20 is controlled within a certain temperature range (for example, about -30° C.) so that the temperature of the cool storage agent 2Q does not rise or fall. , the cold storage chamber 1 is
The inside of the cold storage room 7 is kept at a lower temperature (for example, -40°C) than the inside of the cold storage room 6, but since it is insulated from the cabinet 2 at the bottom of the cold storage room body 1, the heat between the cold storage room 17 and the cold storage room 5 is kept. Exchange is slightly restricted. Further, since the inlet 6 and the outlet lower, which are the openings of the cold storage chamber body 1, are provided at the lower part, the cooled air in the cold storage chamber 17 does not flow into the cold storage chamber 6 by natural convection.

On the other hand, at the same time as the cold storage operation of the cold storage agent 2o is started, the charging of the battery 23 and the cold storage of the cold storage chamber 6 are also started. In addition, the cold storage operation in the cold storage chamber 6 is also performed.

First, the cold storage room temperature detector 11 attached to the bottom part of the cold storage room 6 is activated, and the cold storage fan 10 is operated.

Next, the cooled air in the cold storage chamber 17 is guided into the cold storage chamber 6 through the inlet 6, and the air in the cold storage chamber 5 is introduced into the cold storage chamber 17 through the outflow lower. The above operations are performed until the cool room 5 reaches the set temperature (for example, 5°C), and when the set temperature is reached, the cool room temperature detector 11 controls the cold fan 10 to reduce the amount of cold air into the cool room 5. The temperature inside the cold storage room 5 can be adjusted? The transport items 24 are kept cool.

Next, the case where it is used for refrigerated transportation will be explained.

After cold storage in the cold storage agent 20 and charging of the battery 23 are completed, disconnect the power cord 22 from the power source and connect the compressor 1.
Stop operation of step 5. It is then loaded onto a transport truck, ship, or aircraft and transported to its destination. At this time, the cold storage inside the cold storage chamber 5 is performed as follows. First, when the temperature inside the cold storage room 5 rises, the cold storage room temperature detector 11 installed at the top of the cold storage room 5 operates to operate the cold storage fan 1o, and the latent heat of fusion of the cold storage agent 2o is activated. The cold air obtained by
The air inside is introduced into the cool storage chamber 17 from the outflow lower and is cooled. By controlling the cold storage fan 10 by the cold storage room temperature detector 11 as described above, the temperature inside the cold storage room 5 is maintained and the transported goods 24 are kept cold.

In addition, the machine room 12 is equipped with a vacuum insulation material 19 and a capacitor 16.
The cooler 18 is closely attached to each inner wall to improve heat transfer performance, and to achieve high insulation between the two, and to minimize the wall thickness and reduce the volume of the refrigerator body.

By increasing the storage capacity of the container, a large number of the items 24 to be transported can be transported in a refrigerated state.

As described above, according to this embodiment, the cold storage fan 1 is controlled by the cold storage room temperature sensor 11 even during transportation and during the cold storage operation of the cold storage agent 20 at the base or base.
The transported goods 24
If you keep it cold, it will form a tortoise. That is, while the cold storage agent 20 is storing cold, the inside of the cold storage chamber 17 is kept at a lower temperature (for example, about -40°C) than the inside of the cold storage chamber 5, but it is insulated by the cabinet 2 located at the bottom of the cold storage main body 1. Therefore, heat exchange between the cold storage chamber 17 and the cold storage chamber 6 is slightly limited.
Since the inlet 6 and the drifting soil lower, which are the openings of the cold storage chamber main body 1, are provided at the bottom, the cooled air in the cold storage chamber 17 does not flow into the cold storage chamber 5 by natural convection. Therefore, the temperature inside the cold storage room 5 is maintained at the set temperature, and the refrigerated and cold storage items do not freeze, making it possible to keep the cold during the cold storage operation.As described above, even during the cold storage operation, the cold storage can be used as a cold storage Since it can be used, there is no need to have a separate cold storage, and the purchase and maintenance of a cold storage is no longer necessary, and the amount of accumulated Svene installed on the base and in the Beine can be significantly reduced, making effective use of the Nepeine.Also. , it is possible to reduce the work of the dispatcher of the transported goods 24 from transportation to the base (cold storage), and to maintain quality by maintaining the product temperature accordingly.

In addition, the setting tii of the cold storage room temperature detector 11 in the cold storage room 5
By changing i, one unit can handle not only refrigeration but also freezing temperature ranges, eliminating the need to own a dedicated cooler for each temperature range and reducing the cost of purchasing a cooler.

In addition, the heat transfer performance is improved due to the close contact between the condenser 16 and the cooler 18, and high insulation is achieved between them, and the machine room 12 is kept in a small volume, so the storage capacity of the refrigerator main body 1 is increased. It is possible to carry more than the goods to be transported.

Furthermore, in case of failure or damage, the cold storage main body 1 and the machine room 12 can be separated, and the cold storage main body 1 and the machine room 12 that are damaged can be easily repaired or replaced.

Effects of the Invention As is clear from the above-mentioned embodiments, the present invention comprises a cold storage box main body, a cold storage chamber and a cold air introduction chamber configured in the cold storage box main body, a cold storage fan, and a cooling box disposed at the lower part of the cold storage box main body. a removable machine room that is supported by the machine room; a refrigerator unit and a cold storage chamber that are built into the machine room and separated by a heat insulating wall; and a condenser that is closely fixed to the inner wall of the exterior of the machine room on the cold storage room side and the cold storage room side. A cooler tightly fixed to the inner wall of the interior, the aforementioned condenser, and the aforementioned cooler? The structure includes a heat insulating member with a vacuum insulation material that is pressed against each inner wall and a cold storage agent placed inside the cold storage chamber, so it can be used not only during transportation but also during cold storage operations at bases etc. Also, by controlling the amount of cold air flowing into the cold storage chamber, it is possible to perform refrigerated cold storage and frozen cold storage. Therefore, it can be used not only as a transportation device, but also as a cold storage for bases, etc., and can be used for a wide range of purposes, and the storage capacity of the cold storage can be reduced, making it possible to transport more goods.

Furthermore, in the event of failure or damage, the cold storage box main body and the machine room can be separated, providing a highly economical cold storage and cold storage box that can be easily repaired or replaced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a cold storage type refrigerator according to an embodiment of the present invention;
Fig. 2 is an electrical wiring diagram showing the same cold storage type refrigerator when using a battery, and Fig. 3 is an electrical wiring diagram of the same cold storage type cold storage when using a power source. 1...Cold box main body, 5...Cool compartment, 9...
・・Cold air introduction room, 1o ・・Cool fan, 12・・・・
・Machine room, 13 Pa・Insulation member, 14... Refrigerator unit, 16... Condenser, 17... Cool storage room, 18... Cooler, 19... Vacuum insulation material, 20, river, cold storage 4].

Claims (1)

[Claims] A cold storage main body, a cold storage chamber and a cold air introduction chamber configured in the cold storage main body, a cold storage fan and a removable machine room disposed and supported at the lower part of the cold storage main body, and a machine room built in the machine room. A refrigerator unit and a cold storage room separated by a heat insulating wall, a condenser tightly fixed to the inner wall of the exterior on the cool storage room side of the machine room, a cooler tightly fixed to the inner wall of the inner wall on the cool storage room side, the condenser and the cooling 1. A cold storage type cold storage box comprising: a heat insulating member having a vacuum heat insulating material therein for pressing the containers into close contact with each inner wall; and a cold storage agent disposed within the cold storage chamber.