JPH01131873A - Cold accumulation type cold-insulating warehouse with refrigerator - Google Patents

Abstract

PURPOSE: To reduce a cooling load on a cold storage operation and accurately control the temperature in an insulating container that is being subjected to cold insulation by dividing the inside of the body of the insulating container into a cooling room and a cold storage room, allowing a compartment wall to be a heat-insulating compartment wall with a cold air discharge port and a cold air suction port, and providing a charged fan motor at either the cold air discharge port or the cold air suction port for operation. CONSTITUTION: An insulating container is provided with an insulating container body 17 consisting of a cooling room 28 and a cold storage room 29 that decorate a cold storage agent 23 and a cooler 21, a heat-insulating compartment wall 25 with a cold air discharge port 26a and a cold air suction port 26b for subdividing the cooling room 28 and the cold storage room 29, and a refrigerator unit 32 with a rechargable fan motor 27 that operates only on cold storage transportation being provided at the part of the cold air discharge port 26a and a capacitor 31 being incorporated into the heat-insulating wall outer wall surface of the insulating container body 17. The insulating container stops the rechargeable fan motor 27 during cold storage operation and cools and freezes the cold storage agent 23 in the cooling room 28 with a small capacity being subdivided by the heat-insulating compartment wall 25. Also, the inside of the cold storage room 29 is controlled to be cooled by operating and stopping the rechargable fan motor 27 during cold storage operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cold storage refrigerator with a refrigerator that keeps the inside of the refrigerator cold by using a cold storage agent.

BACKGROUND OF THE INVENTION In recent years, small-sized cool storage refrigerators equipped with refrigerators have been used for delivery by trucks and the like in the distribution of fresh foods.

An example of the above-mentioned conventional cold storage refrigerator with refrigerator will be described with reference to the drawings.

FIG. 3 is a longitudinal sectional view showing the structure of a conventional cold storage refrigerator with refrigerator. In FIG. 3, 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 gasket 4 that seals the door 3 and the cabinet 2 together. Reference numeral 5 denotes a cooler, which includes a sealed case 6 and a latent heat type cold storage agent 7 having a freezing point lower than the set internal temperature of the refrigerator.
and a cooling pipe 8 for cooling and solidifying the cold storage agent 7. 9 is the main body of the refrigerator unit, and the compressor 10. Capacitor 11. A capillary tube (not shown) is built in and connected to the cooling pipe 8 to form a refrigeration cycle. 12 is a cooling fan for the condenser 11;
Reference numeral 3 denotes a temperature sensor body for detecting cold storage and controlling the freezing temperature of the cold storage agent 7, and a temperature sensing portion 14 is attached to the bottom surface of the cooler 6. 15 is a power cord.

Regarding the cold storage type refrigerator with refrigerator configured as above,
I will explain the operation of Nyoshitaten. First, power cord 16
Plug into the power supply and operate the compressor 1° to perform cold storage operation. Then, the cold storage agent 7 is cooled by the cooled cooling pipe 8, and when the cold storage agent 7 is completely cooled and solidified and the temperature of the temperature detection part 14 reaches a predetermined temperature lower than the freezing temperature, the temperature detector 13 is activated. Then, the operation of the compressor 1o is stopped.

Thereafter, the compressor 1o is repeatedly operated and stopped, and the freezing temperature of the cool storage agent 7 is controlled within a certain temperature range so that the temperature of the cool storage agent 7 does not drop too much.

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

First, after putting the cooled transportation goods 16 such as fresh food brought from the production area into the refrigerator main body 1, the power cord 1
Unplug 6 from the power source. Then, it is loaded onto a transport truck or the like and transported to the destination. At this time, the inside of the cold storage main body 1 is cooled by the cooler 6 which is cooled by the latent heat of fusion of the cold storage agent 7, thereby preventing the temperature of the transported goods 16 from rising.

Problems to be Solved by the Invention However, with the above configuration, during cold storage operation, the cooling load of the compressor 1o becomes large because it not only cools the cold storage agent 7 but also cools the inside of the cold storage box body 1. In addition, it is necessary to increase the size of the condenser 11, which results in a decrease in the internal volume of the cold storage chamber and an increase in power consumption due to the increase in the size of the refrigerator unit 9.

Furthermore, when the outside temperature is low, such as in winter, the temperature inside the refrigerator main body 1 drops too much, causing the problem that the transported goods freeze.

In view of the above problems, the present invention reduces the cooling load during cold storage operation, downsizes the refrigerator unit and reduces power consumption, and also maintains the internal temperature during cold storage regardless of changes in outside air temperature. The purpose of the present invention is to provide a highly economical cold storage refrigerator with a refrigerator that can accurately control the internal temperature to a predetermined temperature.

Means for Solving the Problems In order to solve the above-mentioned problems, the cold storage type cold storage with refrigerator of the present invention has a cooling chamber in which a cooler and a cold storage agent are installed inside the cold storage box body, and a cold storage for storing transported goods. The chamber is divided by a partition wall, the partition wall is an insulating partition wall having a cold air outlet and a cold air intake, and either the cold air outlet or the cold air intake is provided with:
A rechargeable fan motor is provided, and is configured to stop the rechargeable fan motor during cold storage operation or when transporting goods that do not require cooling, and to operate the rechargeable fan motor only during cold storage transport. It is.

According to the present invention, with the above-described configuration, during cold storage operation, the cold storage agent is cooled and frozen in a small-volume cooling chamber partitioned by a heat-insulating partition wall, so the cooling efficiency is lower than that of a conventional cold storage that cools the entire cold storage. The load can be significantly reduced, and the refrigerator unit can be significantly downsized, reducing power consumption and increasing internal volume. In addition, by controlling the amount of cold air discharged into the cold storage compartment by starting and stopping the rechargeable fan motor during transportation, the temperature of the cold storage compartment can be precisely controlled to a constant temperature, so the cold storage compartment can be kept at a constant temperature during the winter. This can be prevented from decreasing.

Furthermore, by stopping the rechargeable fan motor during transportation, it can also be used to transport items that do not require cooling.

EXAMPLE Hereinafter, a cold storage type refrigerator with a refrigerator according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing the structure of a cold storage type refrigerator with a refrigerator according to an embodiment of the present invention. In Figure 1, 17
Cabinet 1B is the main body of the cooler and has a built-in insulation material,
Gasket 2 sealing door 19 and cabinet 18
o. Reference numeral 21 denotes a cooler, which is composed of a sealed case 22, a latent heat type cold storage agent 23 having a solidification temperature lower than the set internal temperature of the refrigerator, and a cooling pipe 24 for cooling and freezing the cold storage agent 23. The container 21 is attached to the top surface of the refrigerator main body 17. Reference numeral 26 denotes a heat insulating partition wall having heat insulating properties, which divides the inside of the cold storage main body 17 into two chambers, a cooling chamber 28 and a cold storage chamber 29.

The heat insulating partition wall 26 has a cold air discharge port 26a and a cold air intake port 26.
b, and a rechargeable fan motor 27 is installed at the cold air outlet 25a. Rechargeable fan motor 27
is composed of a storage battery section 27a that stores electricity and a motor section 27b. A compressor 30 is installed outside the lower insulation wall of the cold storage chamber 29. Reference numeral 31 denotes a condenser, which is built in the outer wall surface of the heat insulating wall of the cold storage main body 17, excluding the cooling chamber 28 of the cold storage main body 17. A compressor 3o, a condenser 31, and a capillary tube (not shown) are connected in series to constitute a refrigerator unit 32, and a cooling pipe 24 of a cooler 21 is connected in series.
is connected to form a refrigeration cycle. Reference numeral 33 denotes a temperature sensor body that detects cold storage and controls the freezing temperature of the cold storage agent 23, and a temperature sensing portion 34 is attached to the bottom surface of the cooler 21. Reference numeral 36 is a temperature controller that controls the temperature inside the cold storage chamber 29 to a desired temperature, and a detection unit 36 is provided near the cold air discharge port 26a, and the operation time of the rechargeable fan motor 27 is controlled. Control the internal temperature. 37 is a cold storage switch, and when the cold storage switch 37 is turned on, operation of the rechargeable fan motor 27 is started. 38
is the power cord.

The operation of the cold storage refrigerator with refrigerator constructed as described above will be explained below using the electrical wiring diagrams shown in FIGS. 2 and 3.

First, in the cold storage operation, the power cord 38 is plugged into a power source, an electric circuit shown in FIG. 2 is formed, the compressor 30 is operated to perform the cold storage operation, and the storage battery section 27a of the rechargeable fan motor 27 is charged.

At this time, the cold storage switch 37 is opened and the rechargeable motor 27 is stopped. When the cold storage agent 23 is cooled by the cooled cooling pipe 24, and the cold storage agent 23 is completely cooled and frozen, and the temperature of the temperature detection unit 34 reaches a predetermined temperature lower than the freezing temperature of the cold storage agent 23, the temperature is detected. The circuit 33 is opened,
Stop compressor 3° operation. After that, the temperature detector 33 repeatedly starts and stops the compressor 3o.
The freezing temperature of the cold storage agent 23 is controlled within a certain temperature range so that the temperature of the cold storage agent 23 does not drop too much. At this time, since it is only necessary to cool the cooling chamber 28 divided by the heat insulating partition wall 26, the cooling load can be significantly reduced compared to the case where the inside of the cold storage main body 17 is cooled, and the compressor 30 can also be downsized.

Next, the case where it is used for refrigerated transportation will be explained using FIG. 3. First, turn on the cold storage switch 37.

(Closing). Then, the voltage of the storage battery section 27a is applied to the motor section 27b of the rechargeable fan motor 27, the rechargeable fan motor 27 is operated, and the cold air in the cooling chamber 28 is discharged from the cold air discharge port 26a to cool the inside of the cold storage chamber 29. . Then, after putting the cooled transportation goods 16 such as fresh food brought from the production area into the cold storage room 29, the power cord 38
Disconnect from the power source and stop compressor 3o operation.

Then, it is loaded onto a transport truck or the like and transported to the destination.

At this time, the temperature controller 35 repeatedly operates and stops the rechargeable fan motor 27 inside the cold storage main body 17, and the cold storage agent 23
By controlling the flow of cold air heat-exchanged from the cooler 21, which is cooled by the latent heat of fusion, into the cold storage chamber 29, the temperature inside the cold storage chamber 29 is kept constant, and the temperature rise of the transported goods 16 is prevented. Therefore, the temperature of the transported item 16 can be maintained constant with high accuracy regardless of the outside temperature.

Next, we will discuss the case of transporting general goods that do not require cooling. First, the power cord 38 is disconnected from the power supply and the operation of the compressor is stopped.

Then turn off the cold switch (open circuit). Then, general transportation items are placed in the cold storage room 29 and transported to a destination on a truck or the like. At this time, the cooling chamber 28 and the cold storage chamber 29 are divided by a heat insulating partition wall 26, and a rechargeable fan motor 27
Since the cold storage compartment 29 is also stopped, the temperature of the general transported goods will not be lowered.

As described above, according to this embodiment, the cold storage agent 23 and the cooler 2
1, an insulated partition wall 26 having a cold air outlet 26a and a cold air intake port 26b that partition the cooling chamber 28 and the cold storage chamber 29, It is equipped with a rechargeable fan motor 27 installed in the discharge chamber 26a and operated only during cold storage transport, and a refrigerator unit 32 having a condenser 31 built into the outer wall of the heat insulating wall of the cold storage main body 17. motor 2
7 is stopped and the cold storage agent 23 is cooled and frozen in the small-volume cooling chamber 28 divided by the heat-insulating partition wall 26, so the cooling load can be significantly reduced compared to the conventional cooler that cools the entire cold storage. A wall self-containing type capacitor 31 with a small ineffective volume can be applied, and the internal volume can be increased, and the compressor 3o can be downsized, thereby reducing power consumption.

In addition, during cold storage operation, the inside of the cold storage compartment 29 is controlled by operating and stopping the rechargeable fan motor 27, so the temperature of the transported goods 16 can be kept constant with high accuracy regardless of the outside temperature. Transport items can be prevented from freezing. Furthermore, by stopping the rechargeable fan motor 27, cooling of the cold storage compartment 29 can be prevented, so that it can also be used for general transportation where cooling is not required.

Effects of the Invention As described above, the present invention provides a cold storage main body comprising a cooling chamber containing a cold storage agent and a cooler, and a cold storage chamber for keeping transport items such as food cold, and a cooling chamber and a cold storage chamber. A heat insulating compartment wall with a cold air outlet and a cold air intake that partitions the refrigerator, a rechargeable 7-arm motor installed at either the cold air outlet or the cold air intake that operates only during refrigerated transportation, and a By having an installed refrigerator unit, during cold storage operation, the cold storage agent is cooled and frozen in a small volume cooling chamber divided by an insulated partition wall, so the cooling load is reduced compared to a conventional refrigerator that cools the entire cold storage. It is possible to downsize the refrigerator unit and reduce power consumption.

Furthermore, during refrigerated transportation, the temperature inside the refrigerated storage chamber can be precisely controlled using a rechargeable fan motor, so that the temperature of the transported items can be kept constant regardless of the outside temperature.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing the structure of a cold storage type refrigerator with refrigerator according to an embodiment of the present invention, FIG. 2 is an electrical wiring diagram during freezing operation, and FIG. 3 is an electrical wiring diagram during cold storage operation.
FIG. 4 is a longitudinal sectional view showing the structure of a conventional cold storage refrigerator with refrigerator. 17...Cold box body, 21...Cooler, 23...Cold storage agent, 26...Insulated compartment wall, 27...Charging Type fan motor, 28...
...Cooling room, 29...Cold storage room, 32...
... Refrigerator unit. Name of agent: Patent attorney Toshio Nakao and 1 other person25
- # Obstruction wall 27 - ffi electric fan motor 2B -; 9 # Mouse meter - Cold storage room Japanese nb --- Motor Japanese Q- Compress 33 -- Warm counterfeit inspection product 5s-2

Claims (1)

[Claims] A cold storage body consisting of a cooling room containing a cold storage agent and a cooler, and a cold storage room for keeping transported items such as food cold;
an insulating partition wall having a cold air discharge port and a cold air intake port that partition the cooling room and the cold storage room; a rechargeable fan motor that is provided at either the cold air discharge port or the cold air intake port and operates only during cold transport; A cold storage type cold storage box with a refrigerator, characterized in that it is equipped with a refrigerator unit installed outside the main body of the cold storage box.