KR102497350B1 - Temperature maintaining pack - Google Patents

Abstract

The present invention is a temperature maintenance pack for maintaining the temperature of a product by heat transfer by convection, and includes a cooling unit 21 containing a refrigerant and a plurality of transfer units 22 mounted on the cooling part. ) is divided into small units and formed by compression, and air and water are injected into the delivery part 22, and air is injected so that it is always tight.

Description

Temperature maintenance pack for maintaining product temperature by heat transfer by convection {TEMPERATURE MAINTAINING PACK}

The present invention relates to a temperature maintaining pack for maintaining the temperature of a product by heat transfer by convection.

The present invention relates to a cooling pack, and more particularly, to a freezer pack/refrigerating pack used when delivering food materials. Conventionally, when food materials are delivered using services such as parcel/registration/courier, a temperature maintenance pack (hereinafter referred to as a temperature maintenance pack inclusive of 'frozen packs and refrigerated packs') is placed on the bottom or lid of the product packaging box. Attached to keep the freshness of the product. However, in this case, cooling is not done by heat conduction, but by convection. There is a lot of space between the temperature holding pack and the product, and the product is wrapped with something like vinyl to protect it from impact. It is inefficient to use it to maintain temperature.

For this reason, in shipping, a method of cooling using conduction rather than convection has been widely used. Since conduction is a form in which heat is transferred by contacting objects, it is used for things that can be put in hard containers or things that have a certain degree of hardness. has been

However, in the case of meat or vegetables, if the temperature maintaining pack is in direct contact with it, it may fall off, so even if it is not usable and the efficiency is low, the temperature is maintained by using convection after wrapping it in something like vinyl.

In this regard, Korean Utility Model Registration No. 200440614 'Container Refrigeration Pack' or Korean Utility Model Registration No. 20-035923 'Small Refrigerant Pack' were developed to solve these problems, but especially for maintaining low temperatures. It was not very helpful for me to store products in plastic containers.

The present invention has been made to solve the above problems, and even when packing vegetables or meat, a cooling mat that can maintain freshness by cooling by convection without wrapping with a freezer pack after wrapping in plastic aims to provide

In order to achieve the above object, a temperature maintenance pack for maintaining the temperature of the product by heat transfer by convection is provided, which includes a cooling unit 21 containing a refrigerant and a plurality of transfer units 22 mounted on the cooling unit. Including, the delivery part 22 is divided into small units and formed by compression, and the inside of the delivery part 22 is injected with air and water so as to always inject air so that it is tight.

There is an effect of enabling delivery and storage of vegetables, Chinese cabbage, and meat in an undamaged state by the temperature maintaining pack as described above.

1 is a diagram showing one embodiment according to the present invention;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a diagram showing one embodiment according to the present invention. In FIG. 1, the cooling unit 21 containing a refrigerant made of a polymer material is located at the lowermost end, and a plurality of transmission units 22 are formed above it. The delivery unit 22 is filled with air and water on the inside, and the delivery unit 22 and the delivery unit 22 are press-fitted so that they are completely isolated from the adjacent delivery unit 22.

The delivery unit 22 is placed on top of the cooling unit 21, and the product comes up to the top of the delivery unit 22, and the delivery unit 22 is also placed above the product, and another cooling unit ( 21) is placed.

The delivery unit 22 is filled with air and water, and the ratio of air and water is about 4:6 to 6:4, and preferably about 5:5.

The cold air of the cooling unit 21 is transmitted to the delivery unit 22 placed directly above it. In a stable state, water descends downward due to gravity inside the delivery unit 22, and an air layer is formed on the top of the cooling unit ( The cold air transmitted from 21) is transmitted by conduction to the part where there is water, but it is transmitted by convection in the part where there is an air layer. does not occur

In addition, even when transported after packaging, the water continues to fluctuate due to shaking during transport, but the water only hits the ceiling at the top of the delivery unit 22 and does not continuously directly touch the product, so if the product becomes soft won't happen

In addition, the delivery unit 22 is manufactured to allow air and water to enter, and is always kept taut so that water flows from the inside.

The delivery part 22 is also placed on the top of the product, but at the top, the product and the delivery part 22 do not come into close contact and can form a certain gap, and since the upper part where the product is packed is often empty, the water Even if it is located at the bottom of (22), heat transfer by convection occurs rather than heat transfer by conduction even at the top.

For fermented products such as kimchi, which are sensitive to temperature, it is difficult to control the temperature using ice packs in the conventional way. Possible amounts of kimchi are being sold out due to discounts. However, when contacting the kimchi packaging using a cooling pack to slow down fermentation, the cabbage in the contact area is often damaged, so the conventional cooling pack cannot be used in many cases.

However, in the present invention, cooling is possible without damaging the cabbage because the transfer unit 22 makes the transfer by convection while creating a gap with the kimchi. That is, the part that the product comes into contact with is not a part with a refrigerant, but a part with a gas, and heat transfer by the refrigerant is performed by convection, not conduction. In other words, because the refrigerant does not come into direct contact, it is possible to store products such as cabbage, vegetables, and meat that are easily damaged in the past.

The air layer can be kept in an expanded state by making it higher than the atmospheric pressure, so that it does not come into direct contact with the refrigerant even if it is pressed by the product.

The air layer may have a separate diaphragm so that the air layer and the refrigerant do not mix at all, but in many cases it is not necessary to separate the diaphragm because the refrigerant goes downward due to gravity.

21: cooling unit 22: delivery unit
23: compression part

Claims (1)

As a temperature maintenance pack for maintaining the temperature of the product by heat transfer by convection,
A cooling unit 21 containing a refrigerant and
It includes a plurality of transmission parts 22 mounted on the cooling part 21.
The delivery unit 22 is formed by being divided into small units and compressed, completely isolated from neighboring delivery units.
The delivery part 22 is injected with air and water, and injects air so that it is always tight. A temperature holding pack for maintaining the temperature of the product by heat transfer by convection, which allows the air layer to be formed and the product to be placed above the area where the air layer is formed.

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