JPH0240472A - Cold heat accumulating type refrigerator - Google Patents

Abstract

PURPOSE:To make the purchase, maintenance and control of a refrigerating storage casing unnecessary and utilize a space effectively by a method wherein a refrigerating chamber is cooled and maintained at a set temperature by the opening and/or closing of the main body of storing and refrigerating temperature detector after cold heat accumulating operation. CONSTITUTION:A switch mechanism for selecting the case of cold heat accumulating and storing or refrigerating transportation is attached to a refrigerating chamber 23. When the refrigerating chamber is used for refrigerating and storing, cooling operation effected by an air blowing fan 30 is stopped by the detection of the finishment of freezing of cold heat accumulating agent of a cold heat accumulating temperature detecting unit 46 until the temperature of the chamber arrives at a set storing and refrigerating temperature and, thereafter, the opening and closing of the main body 34 of a storing and refrigerating temperature detecting unit 35 attached to the vicinity of a suction hole 33 arranged at one end of a heat insulating partitioning wall 32 is repeated to operate or stop the air sending fan 30 and refrigerate or store stored materials. According to this method, the purchase, maintenance and control of a refrigerating and storing chamber are unnecessitated and a space may be utilized effectively.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention stores cold with a cold storage agent and also keeps the inside of the refrigerator cold after the cold storage is completed, and is used for transporting products that require refrigeration or freezing such as fresh foods and medicines. The present invention relates to a cold storage type refrigerator that can be used for cold storage at bases, etc.

BACKGROUND OF THE INVENTION In recent years, small-sized cold storage 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 type cold storage box will be described below with reference to the drawings.

FIG. 4 is a longitudinal sectional view showing the structure of a conventional cold storage type cold storage. In Fig. 4, 1 is the main body of the cold storage cabinet, which includes a cabinet 2 with built-in heat insulating material, a door 3, and a gasket that seals the door 3 and the cabinet 2. -4.

Reference numeral 5 denotes a cold storage chamber, which is composed of a latent heat type cold storage agent 6 having a freezing point approximately 16° C. lower than the set internal temperature of the cold storage chamber, and a cooler 7 for cooling and solidifying the cold storage agent 6. It is formed at the top. 8 is a blower fan, and 9 is a defrosting heater built into the cooler 7. 1o is a heat insulating compartment wall having heat insulating properties, and 11 is the heat insulating compartment wall 1o.
12 is a ventilation fan installed in the heat insulating partition wall 1o near one of the ventilation holes 11. Reference numeral 13 denotes a cold storage room, which is partitioned by the heat insulating partition wall 10 and formed at the lower part of the cold storage main body 1. Reference numeral 14 denotes a cold storage temperature detector main body, and a cold storage temperature detection section 15 is attached to the inner wall surface of the cold storage chamber 13. Reference numeral 16 denotes a compressor, which is installed outside the new wall below the cold storage chamber 13. Reference numeral 17 denotes a capacitor, which is built in the outer peripheral surface of the heat insulating wall of the cold storage main body 1, excluding the cold storage chamber 13 of the cold storage main body 1. compressor 16
A condenser 17 and a gear pillar tube (not shown) are connected in series to form a refrigerator unit 18, which cools the cold storage chamber 5. +R7 is connected to form a refrigeration cycle.

Reference numeral 19 denotes a cold storage temperature detector body that detects cold storage and controls the freezing temperature of the cold storage agent 6, and has a temperature detection section 20 attached to the upper surface of the heat insulating partition wall 1o. 21 is a power cord.

The operation of the cold storage type refrigerator constructed as described above will be explained below with reference to FIG. 4.

First, the cold storage operation is performed by plugging the power cord 21 into the power source and operating the compressor 16. Then, the cold storage agent 6 is cooled by the cooled cooler 7, and when the cold storage agent 6 is completely cooled and solidified and the temperature of the cold storage temperature detection part 2o reaches a predetermined temperature lower than the freezing temperature, the cold storage temperature detector 19 is activated. Then, the operation of the compressor 1e is stopped. Thereafter, the compressor 16 is repeatedly operated and stopped, and the freezing temperature of the cool storage agent 6 is controlled within a certain temperature range so that the temperature of the cool storage agent 6 does not drop too much.

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

First, the ventilation fan 7 is operated. Then, the cold air cooled by the cold storage agent 6 flows from the ventilation hole 11 to the cold storage chamber 13 side.
The cold storage chamber 13 is cooled. After the cooled transport goods 22, such as fresh food brought from the production area, are placed in the cold storage chamber 13, the power cord 21 is disconnected from the power supply, and the operation of the compressor 16 is stopped. 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 chamber 1 is cooled by the latent heat of fusion of the cold storage agent 6.
9 to prevent the temperature of the transported goods 22 from rising. At this time, the compressor 16 is stopped and high-temperature refrigerant is not flowing into the condenser 17, so the cold storage main body 1
There is no heat effect on the inside, and the load heat amount does not increase.

Problems to be Solved by the Invention However, with the above configuration, during cold storage operation, not only the cold storage agent 6 is cooled, but also the inside of the cold storage box main body 1 is cooled, and there is no function to adjust the temperature of the cold storage chamber, so that the inside of the cold storage box becomes zero. ℃ or below, the refrigerated items to be transported may freeze, and the temperature inside the refrigerator may not be constant due to fluctuations in outside temperature, making it impossible to keep the items cold before and after transportation at bases, etc.

In view of the above-mentioned problems, the present invention has been developed to turn off chiller units at bases etc. by detecting the temperature of the cold storage room after cold storage operation.
To provide a highly economical cold storage type cold storage which can be used for both transportation equipment and storage, capable of storing refrigerated and frozen cold storage by maintaining the inside of the cold storage room at a set temperature through N-〇FF control.

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 storage cold storage temperature sensing section near the intake hole at one end of the insulation partition wall, and a storage cold storage temperature sensing section that detects the storage cold storage temperature sensing section. A storage cold storage temperature detector body is provided to control the refrigerator unit in an ON-FF manner, and after the cold storage operation is completed, the storage cold storage temperature detector body is turned on by detection by the storage cold storage temperature detection unit. , the refrigerator unit is operated with electricity to cool the cold storage chamber and maintain it at a set temperature, and the temperature of the cold storage chamber is maintained and controlled by the same operation when the cold storage is used during transportation after the completion of cold storage. It is something that

Function: With the above-described configuration, the present invention can maintain the temperature inside the cold storage room at the set temperature after the cold storage operation, so compared to the conventional method of having a separate cold storage at a base etc., the purchase and maintenance of a cold storage is easy. This eliminates the need for storage space within the base, significantly reducing the storage space inside the base, making effective use of space, reducing the work of transporting goods in and out at the transport base (cold storage), and improving quality by maintaining product temperature. can be achieved.

EXAMPLE Hereinafter, a cold storage type refrigerator according to an example of the present invention will be described with reference to FIGS. 1 to 3.

In the figure, 23 is the main body of the refrigerator, which includes a cabinet 24 with built-in heat insulating material, a door 25, and 25 and the cabinet 24.
and a gasket 26 for sealing. Reference numeral 27 denotes a cold storage chamber, which is composed of a latent heat type cold storage agent 28 having a freezing point that is about 5 degrees Celsius lower than the set internal temperature of the cold storage, and a cooler 29 that cools and solidifies the cold storage agent 28. It is formed at the top. 30 is an air supply fan, and 31 is a defrosting heater, which is built in the cooler 29. 32 is a heat insulating compartment wall having heat insulating properties; 33 is an intake hole provided at one end of the heat insulating compartment wall 32; 34 is a main body of the storage cold storage temperature sensor; A detection section 35 is attached. Reference numeral 36 indicates a ventilation hole disposed at the opposite end of the intake hole 33, and reference numeral 37 indicates a ventilation fan installed near the ventilation hole 36. 3
Reference numeral 8 denotes a main body of the transportation cold storage temperature sensor, and the ventilation fan 37 and the driving element (batch! J-) 40 are connected/disconnected by the transportation cold storage temperature detection section 39 attached to the lower wall surface of the heat insulating partition wall 32.

Reference numeral 41 denotes a cold storage room, which is partitioned by the new edition partition wall 32 and formed at the lower part of the cold storage main body 23. A compressor 42 is installed outside the lower insulation wall of the cold storage chamber 41. Reference numeral 43 denotes a capacitor, which is built in the outer peripheral surface of the heat insulating wall of the cold storage main body 23, excluding the cold storage chamber 41 of the cold storage main body 23. A compressor unit 44 is purchased by connecting a compressor 42, a condenser 43, and a capillary tube (not shown) in series,
It is connected to the cooler 29 of the cold storage chamber 27 to form a refrigeration cycle. Reference numeral 45 denotes a cold storage temperature detector body that detects cold storage and controls the freezing temperature of the cold storage agent 28, and a cold storage temperature detector 46 is attached to the upper surface of the heat insulating partition wall 32. 47 is a cold storage/storage/transport selection switch, and 48 is a power cord.

The operation of the cold storage type refrigerator constructed as described above will be explained below with reference to FIGS. 1, 2, and 3.

First, the cold storage operation is performed by plugging the power cord 48 into the power source and turning on the selection switch 4 to energize 47a to operate the compressor 42. Then, the cool storage agent 28 is cooled by the cooled cooler 29, and when the cold storage agent 38 is completely cooled and solidified and the temperature of the cold storage temperature detection part 46 reaches a predetermined temperature lower than the freezing temperature, the cold storage temperature detector 46 45 is activated and the operation of the compressor 42 is stopped. Compressor 42
The freezing temperature of the cold storage agent 28 is controlled within a certain temperature range so that the temperature of the cold storage agent 28 does not rise or fall too much.

Next, we will explain the case where it is used for cold storage.In the cold storage room, when the cold storage temperature detection unit 46 detects the completion of freezing of the cold storage agent, the cold storage temperature detector body 45 switches to 4SB, and the air supply fan 30 is operated until the storage cold storage set temperature is reached. The cooling operation is stopped, and thereafter, the storage cold storage temperature detector body 34 is repeatedly opened and closed based on the cold storage temperature detection by the storage cold storage temperature detection unit 35, and the air supply fan 3° is operated and stopped to transfer the cold air in the cold storage chamber 27 to the cold storage chamber 27. 41 and controlled within the set cold storage temperature range as shown in FIG. 3B.
Store in a cool place.

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

Switch the selection switch 47 to the 47b side and connect the power cord 48.
When the compressor 42 is disconnected from the power source, the operation of the compressor 42 is stopped. Then, it is loaded onto a transport truck or the like and transported to the destination. At this time, inside the cold storage main body 23, the ventilation fan 37 is energized and cold air cooled by the latent heat of fusion of the cold storage agent 28 flows through the ventilation holes 36 to the cold storage chamber 41 side, cooling the cold storage chamber 41. Thereafter, the transportation cold storage temperature detector body 38 is repeatedly opened and closed according to the cold storage temperature detection unit 39, and the ventilation fan 37 is operated and stopped to keep the temperature within the set cold storage temperature range. be transported refrigerated.

As described above, according to this embodiment, the cold storage agent 28 and the cooler 29
A cold storage chamber 27 containing a cold storage chamber 27, a cold storage main body 23 consisting of a cold storage chamber 41, a heat insulation partition wall 32 that partitions the cold storage chamber 29 and the cold storage chamber 41, and an intake hole 33 provided at one end of the heat insulation partition wall 32. , a ventilation hole 36 disposed at the other end opposite to the intake hole 33, a ventilation fan installed near the ventilation hole 36, a main body of the storage cold storage temperature sensor through which the air supply fan is turned on/off, and a cold storage temperature sensor body. A condenser 43 is built into the outer circumferential surface of the heat insulating wall of the refrigerator body 23 except for the cold storage chamber 27, and after the cold storage operation, the cold storage chamber 41 can be maintained cooled within the installation temperature range by opening and closing the storage cold storage temperature detector body 34. Since the temperature inside the cold storage is below 0℃ and is not constant, compared to having a separate cold storage, this eliminates the need to purchase and maintain a cold storage, and significantly saves storage space within the base. By reducing the size, you can make effective use of space. In addition, it is possible to reduce the work of carrying in and out the transported goods 22 at the transport base (cold storage) and to ensure quality by maintaining the product temperature accordingly.

Effects of the Invention As described above, the present invention provides a cold storage system that includes a cold storage chamber containing a cooler containing a cold storage agent, a defrosting heater, and an air supply fan, and a cold storage chamber for keeping transported items such as food cold. A storage body, an insulating partition wall that divides the cooling room and the cold storage room, an intake hole provided at one end of the insulating partition wall, and a ventilation hole provided at the other end of the insulating partition wall opposite to the intake hole. , a ventilation fan installed near the ventilation hole, and a ventilation fan installed near the ventilation hole.
By equipping the main body of the storage cold storage temperature sensor that is subject to power outages and the refrigerator unit installed outside the cold storage room side of the main body of the cold storage, after cold storage operation, the main body of the storage cold storage temperature sensor can be opened and closed.
Since the cold storage room can be maintained cooled within the set temperature, compared to the conventional case where the temperature inside the cold storage room is below 0 degrees Celsius and is not constant, it is possible to maintain a separate cold storage room.
This eliminates the need for maintenance and management, significantly reduces installation space within the base, and allows for effective use of space.
It is possible to provide a highly economical cold storage type refrigerator that reduces the work of transporting goods 22 (in cold storage) and ensures quality by maintaining the temperature of the goods.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing the structure of a cold storage type refrigerator according to an embodiment of the present invention, Fig. 2 is an electric circuit diagram of the same, Fig. 3 is an illustration of a storage cold storage at a base, etc., and Fig. 4 is a conventional one. FIG. 23...Cold box main body, 27...Cold storage chamber, 28...Cold storage agent, 29...Cooler,
30... Air supply fan 31... Heater for unboxing, 32... Heat insulation compartment wall, 33...
Intake hole, 34... Storage cold storage temperature sensor body, 3
6... Ventilation hole, 37... Ventilation fan,
41... Cold storage room, 44... Freezer unit. Name of agent: Patent attorney Shigetaka Awano and 1 other person
--One stock'J+1 body 7a-

Claims (1)

[Claims] A cold storage main body consisting of a cold storage chamber containing a cooler containing a cold storage agent, a defrosting heater, and an air supply fan, and a cold storage chamber for keeping transported items such as food cool, and the cold storage chamber and the cold storage chamber are partitioned. A heat insulating partition wall, an air intake hole provided at one end of the heat insulation partition wall, a ventilation hole provided at the other end of the heat insulation partition wall opposite to the air intake hole, and a ventilation fan installed near the ventilation hole. A cold storage type cold storage, comprising: a storage cold storage temperature detector main body that allows the air supply fan to be turned on and off; and a refrigerator unit installed outside the cold storage room side of the cold storage main body.