JPH03267675A - Cold storage type thermal insulation warehouse - Google Patents

Abstract

PURPOSE:To prevent freezing of an article to be thermally insulated by forcibly introducing chilled gas to a thermal insulation chamber by using a thermal insulation fan to maintain the quality of the article such as fruity in thy chamber and heat insulating in the chamber by a heater even in such season or district where the atmospheric temperature drops below zero degree. CONSTITUTION:If the atmospheric temperature is higher than a set temperature of an atmospheric temperature sensor 19, a cooling mode is set, while it is lower than the set temperature, a heating mode is set. A cold storage agent 6 is completely cooled and solidified in the cold storage operation of the agent 6 of the cooling mode. If it becomes a predetermined temperature lower than a freezing temperature, a cold storage agent temperature sensor 17 is operated to stop the operations of a refrigerator unit 20 and a fan 9. If the atmospheric temperature is lower than the set temperature of the sensor 19, the unit 20 is not operated, a heater 7 is energized to generate hot gas. Thereafter, a heater 8, the fan 9 are controlled by a thermal insulation chamber temperature sensor 18 to maintain a thermal insulation chamber 16 at a constant temperature.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is useful for storing products that require refrigeration or freezing, such as perishable foods and pharmaceuticals, by performing a cold storage operation in a refrigerator in parallel with the freezing operation of a cold storage agent. It can be transported without restrictions on region or season, and can be used for cold storage at bases, etc.

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

As a conventional cold storage type cold storage box, for example,
There is one shown in Japanese Patent No. 2664.

An example of the conventional cold storage type cold storage cabinet mentioned above will be described below. Its structure includes a storage box that stores the cold storage member,
A box body that defines a storage space for objects to be cooled and accommodates the storage box, first and second openings provided in the storage box, and at least one of the first and second openings. The device includes a damper portion that can be opened and closed, and a control portion that controls opening and closing of the damper portion, and the first opening portion is located at a higher position than the second opening portion.

The storage space is cooled by heat exchange between the cooled cold storage member and the air in the storage space, and the amount of heat exchanged with the cold storage member is controlled by opening and closing the damper section. When the damper is opened, air cooled by the cold storage member enters the storage space, and warm air in the storage space enters the storage box through the first opening. Due to natural convection, the air circulates inside the box and cools the storage space. It is for cooling.

iI that invention tries to solve! However, in the conventional configuration described above, the circulation of cold air in the cold storage chamber is by natural convection method, so compared to the forced soaking method, the cooling speed is inevitably slower and the temperature unevenness is large. The problem is that the quality deteriorates during the winter season or in areas where the outside temperature is negative, such as in cold regions such as Hokkaido, because there is no means of heating the inside of the cold storage room. The fundamental drawback was that refrigerated products would freeze, significantly reducing the value of the product, and limiting the area and period in which it could be used.

The present invention solves this problem by forcibly introducing cold air into the cold storage room using a cooling fan, and by quickly reaching the specified temperature, the quality of the frozen products such as fruits and vegetables in the cold storage room is maintained. In addition, we also offer cold storage type refrigerators that can prevent cold items from freezing by keeping the inside of the cold storage room warm with an appropriate heating heater even in seasons and regions where the outside temperature drops below zero. .

Means for Solving the Problems In order to solve the above-mentioned problems, the cold storage type cold storage box of the present invention comprises a cold storage box main body, a cold storage chamber configured in the cold storage box main body for keeping transport items such as food cool, and the cold storage chamber. a cold storage chamber provided in the cold storage main body in the upper part of the cold storage chamber, a heat insulating partition wall that partitions the cold storage chamber and the cold storage chamber, a blower fan provided in the cold storage chamber, a cooler, a heater, and a cold storage chamber. The students will learn about the following: a damper that controls the air path of the blower fan, a refrigerator unit installed outside the refrigerator body, and a battery.

Function: With the above-described configuration, the present invention can maintain the desired temperature in the cold storage room and ensure quality regardless of the season, such as winter or summer, or the region. In addition, it can be used not only as a simple dry container, but also as a refrigerator when installed at a transportation base, etc., so it can be used regardless of the season, region, or location. can be operated efficiently.

Embodiment Below, an embodiment of the present invention will be explained with reference to the drawings. In the figure, 1 is the main body of the cold storage cabinet, a cabinet 2 with a built-in heat insulating material, a door 3, and a gasket for sealing the door 3 and the cabinet 2. 4. 5
is a cold storage chamber, which includes a latent heat type cold storage agent 6 having a freezing point approximately 15° C. lower than the set internal temperature of the cold storage, a cooler 8 with a built-in heating heater 7, a blower fan 9, and the blower fan. It is composed of a damper 10, 11 that can be moved vertically to change the air path of the refrigerator 9, and a partition wall 12, and is attached to the ceiling of the cold storage main body 28. 13 is a heat insulating compartment wall having heat insulating properties; 14 is a heat insulating compartment wall 13
A cold air intake port 15 is provided at one end of the cold air intake port 14, and a cold air discharge port 15 is provided at the opposite end of the cold air intake port 14. 1
Reference numeral 6 denotes a cold storage room, which is formed in the lower part of the cold storage main body 1 partitioned by the heat insulating partition wall 13. 17 is a cool storage agent temperature detector that detects the temperature of the cool storage agent; 18 is a cold storage room temperature detector that detects the temperature inside the cold storage room; and 19 is an outside air temperature detector. 20 is a refrigerator unit, and 21 is a battery that serves as a power source for the heating heater 7 and the blower fan 9, which are attached to the lower part of the refrigerator main body 1. 22 is a power cord.

Further, the refrigerator unit 20 is connected in series with the cooler 8 to form a refrigeration cycle.

The operation of the cold storage type refrigerator configured as described above will be explained below using the drawings.

There are two modes of operation of this cold storage type refrigerator: a cooling mode and a heating mode. When the outside air temperature is higher than the set temperature of the outside air temperature detector 19, the cooling mode is activated, and when it is lower (such as during the winter period in a cold region such as Hokkaido), the heating mode is activated.

First, a cooling mode when the outside air temperature is higher than the set temperature of the outside air temperature detector 19 (the set temperature inside the cold storage chamber) will be described. First, for cold storage operation of the cold storage agent 6, the power cord 22 is plugged into the power source, the refrigerator unit 20 is operated, and the cold air generated in the cooler 8 is sent to the cold storage agent 6 by the ventilation fan 9, and the cold storage agent 6 is completely cooled. When it solidifies and reaches a predetermined temperature lower than the freezing temperature, the cold storage agent temperature sensor 17
is activated, and the operation of the refrigerator unit 20 and the blower fan 9 is stopped. Thereafter, the refrigerator unit 20 and the blower fan 9 are repeatedly stopped and operated to control the temperature of the cold storage agent 6 within a certain range so as not to rise or fall. At this time, the damper 10 is at the center (solid line in the figure) and the damper 11 is at the top (thick solid line in the figure). The cold storage agent 6 is efficiently circulated within a narrow area insulated by the heat-insulating partition wall 18 such that the cold air passes through the ventilation duct 23 between the wall 12 and the cabinet 2 and is returned to the blower fan 9. Cool and solidify.

In addition, if you want to cool the inside of the cold storage chamber 16 while performing cold storage operation, the damper 11 will move from the top (thick solid line in the figure) to the bottom (dashed line in the figure), and the cold air generated by the cooler 8f will pass through the discharge port 15. The air in the cold storage chamber 16 passes through the suction port 14 and is returned to the cold storage chamber 5. That is, cool air is forcibly circulated by the blower fan 9, and cooling from normal temperature to the set temperature is quickly and efficiently performed. When the temperature inside the cold storage room 16 reaches the set temperature of the cold storage room temperature detector 18, the damper 11 goes up again (thick mark 1IJiI in the figure), and the cold air generated in the cooler 8 is used only for cooling the cold storage agent 6. . Thereafter, the damper 11 is moved up and down by the cool room temperature detector 18 to maintain the inside of the cool room 16 at the set temperature. Therefore, even during the cold storage operation of the cold storage agent 6, the transported goods can be placed in the cold storage chamber 16 and kept cold.
At the same time as the above operations are performed, the battery 21 that serves as the power source for the heating heater 7 and the blower fan 9 is charged at the same time.

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

First, the power cord 22 is disconnected from the power source, and the operation of the refrigerator unit 20 is stopped. Then, it is loaded onto a transport truck and transported to the destination. At this time, the damper 11 is at the bottom (dashed line in the figure), and the damper 10 is at the center (solid line in the figure), and the inside of the cold storage chamber 16 is charged with cold air obtained by the latent heat of melting of the cold storage agent 6 during the cold storage operation. The air is sent by a blower fan 9 operated by a battery 21. By controlling the blower fan 9 with a cold storage room temperature detector 18, the temperature inside the cold storage room 16 is maintained within a certain temperature range.

Next, the heating mode will be explained. If the outside air temperature is lower than the set temperature of the outside air temperature detector 19 (the set temperature inside the cold storage chamber), heat will escape to the outside, so the cold storage chamber 1
There is no need to cool the inside of the container 6; on the contrary, in the case of refrigerated transportation, it is necessary to heat the container to prevent freezing. First, the power cord 22 is plugged into the power source, and if the outside air temperature is lower than the set temperature of the outside air temperature detector 19, the refrigerator unit 20 is not operated and the heating heater 7 is energized to generate hot air. At this time, the damper 11 is in the center (in the figure, 1g1), the damper 10 is in the bottom (indicated by the broken line in the figure), and when the blower fan 9t is operated, hot air flows from the ventilation duct 23 through the discharge port 15 into the cold storage chamber 16. be guided. Thereafter, the temperature inside the cold storage chamber 16 is maintained at a constant temperature by controlling the heating heater 8 and the blower fan 9 using the cold storage chamber temperature detector 18.

As in the above-mentioned cooling mode, even when transported on a truck or the like, the inside of the cold storage TL 16 can be maintained within a certain temperature range since it operates using the battery 21 as a power source.

As described above, according to this embodiment, the cold air generated by the latent heat of melting of the cold storage agent 6 is forcibly sent into the cold storage chamber 16 by the ventilation fan 9, so that cooling from room temperature to the refrigerating temperature is efficiently performed. It is possible to maintain the quality of refrigerated products such as fruits and vegetables in the cold storage chamber 16. In addition, when the outside air temperature becomes negative, freezing of the refrigerated items can be prevented by generating hot air with the heating heater 7 and forcibly guiding it into the cold storage chamber 16 with the blower fan 9. It is possible to maintain the quality of fruits and vegetables.

Effects of the Invention The present invention comprises a cold storage main body, a cold storage chamber configured in the cold storage main body for keeping transport items such as food cool, and a cold storage chamber provided in the cold storage main body above the cold storage chamber. , an insulating partition wall that partitions the cold storage room and the cold storage room, a blower fan provided in the cold storage room, a cooler, and a heater;
Since the structure consists of a cold storage agent, a damper that controls the air path of the blower fan, a refrigerator unit installed outside the refrigerator body, and a battery, the cold air generated by the cold storage agent is forced by the blower fan. It can be sent into a cold storage room and cooled down quickly. In addition, even when the outside air temperature is below zero, by operating the heater to warm the inside of the cold storage room, it can be used in cold regions where the outside air temperature is low.
With a configuration like 0 or above, which can maintain the quality of refrigerated products such as fruits and vegetables without freezing, even when the temperature is high, the cooling speed inside the cold storage chamber is fast, and the temperature inside the cold storage chamber is not affected by the outside temperature. This makes it possible to realize an excellent cold storage type refrigerator that can maintain constant cold without any heat loss.

[Brief explanation of drawings]

The figure is a longitudinal sectional view of a cold storage type refrigerator according to an embodiment of the present invention. 2...Cold box body, 5. Cold storage agent, 7. Heater 9...Blower fan, 10. 13...Insulating compartment wall, 1 Freezer unit, 21...

Claims (1)

[Claims] A cold storage main body, a cold storage chamber configured in the cold storage main body to keep transport items such as food cool, a cold storage chamber provided in the cold storage main body above the cold storage chamber, and the cold storage chamber and the cold storage. A heat insulating partition wall that partitions the room, a blower fan installed inside the cold storage chamber, a cooler, a heater, a cold storage agent, a damper for controlling the air path of the blower fan, and a blower fan installed outside the cold storage chamber. A cold storage type refrigerator characterized by being equipped with a refrigerator unit to be installed and a battery.