CN212754114U

CN212754114U - Device for prolonging food preservation effect

Info

Publication number: CN212754114U
Application number: CN202021585036.8U
Authority: CN
Inventors: 哈楠
Original assignee: Shenzhen Novelty Technology Co ltd
Current assignee: Shenzhen Novelty Technology Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-03-23
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to the field of food industry, in particular to a device for prolonging the food preservation effect, which comprises a storage container and an upper cover covering the storage container, wherein the lower end surface of the upper cover is provided with a flow guide wind surface from the edge to the middle, food is placed in the storage container, and an oil film covering the upper end surface of the food is poured into the storage container; the special design of the upper cover is utilized to accelerate the flow of cold air, improve the air heat transfer efficiency and accelerate the temperature reduction of food, thereby reducing the water loss and the speed.

Description

Device for prolonging food preservation effect

Technical Field

The utility model relates to a food industry field especially relates to a device of fresh-keeping effect of extension food.

Background

Food preservation techniques are generally divided into three types, freezing, refrigerating and high-temperature sterilization. At present, the domestic food freezing technology generally adopts two quick freezing modes of liquid nitrogen quick cooling and air cooling.

In the air-cooling quick-freezing technology, food is blown by low-temperature air with constant temperature in a refrigeration house or a quick-cooling tunnel to be directly cooled and quickly frozen. In the process of temperature reduction and quick freezing, because the temperature difference between the surface of the food and cold air is large, the process of water vaporization and evaporation in the food can occur, so that the food gradually loses water. After the quick-freezing process is finished, the original water content of the food is reduced, and the taste of the food is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device for prolonging the food preservation effect in order to solve the defects existing in the background technology.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a device for prolonging the food preservation effect comprises a storage container and an upper cover covering the storage container, wherein a flow guide air surface is arranged on the lower end surface of the upper cover from the edge to the middle, food is placed in the storage container, and an oil film covering the upper end surface of the food is poured into the storage container.

Preferably, the guide wind surface comprises a first slope, a first plane, a second slope and a second plane which are sequentially connected from top to bottom.

Preferably, the inclination of the first slope is the same as that of the second slope, and an inclination angle formed between the first slope and a horizontal plane is forty-five degrees.

Preferably, a projection right below the second plane falls inside the storage container, and a projection right below the first slope exceeds outside the storage container.

Preferably, the two sides of the space formed between the upper cover and the storage container are respectively an air inlet end and an air outlet end.

Preferably, the number of the food is set to be a plurality, the food is uniformly distributed on the inner side of the storage container, the oil film covers the upper end face of the food, and the edge of the oil film is attached to the inner wall of the storage container.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. reducing the amount of food surface area in contact with air: by adopting the water-in-oil technical principle, before the food enters the quick-freezing equipment, special oil sealing treatment is carried out. Sealing oil on the surface of the food which is in large contact with air, standing until the oil film is stable, and then entering quick-freezing equipment for air-cooling quick-freezing. The process utilizes the characteristic of good water resistance of the oil, ensures that food is not in direct contact with air, blocks water vapor evaporation to a greater extent, and utilizes the characteristic of good heat conductivity of the oil to cool the surface of the food more quickly.

2. Lowering the temperature of the cold air with which the food is exposed: on the assumption that the power of the refrigerating equipment is unchanged, the principle that the higher the air flow rate is, the higher the heat transfer coefficient is utilized, and the cold air temperature contacted with the surface of the food is reduced in a cold storage by adopting a mode of accelerating the cold air circulation speed. The smaller the air circulation sectional area is, the faster the air flow rate is, the higher the cover is improved, the speed of cold air flowing through the surface of food is accelerated, so that the food cooling is realized more quickly, and the water loss amount and speed of the food are reduced.

Drawings

Fig. 1 is a schematic structural diagram of the device for prolonging the food preservation effect of the present invention.

In the figure: 1. an upper cover; 2. a first slope; 3. a first plane; 4. a second slope; 5. a second plane; 6. a storage container; 7. a food product; 8. an oil film; 9. an air inlet end; 10. an air outlet end.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The device for prolonging the food preservation effect as shown in fig. 1 comprises a storage container 6 and an upper cover 1 covering the storage container, wherein the lower end surface of the upper cover 1 is provided with a diversion wind surface from the edge to the middle, food 7 is placed in the storage container 6, and an oil film 8 covering the upper end surface of the food 7 is poured in the storage container 6.

The water conservancy diversion wind face includes from last first slope 2, first plane 3, second slope 4 and the second plane 5 that links gradually down, plays the effect that increases the wind speed, and the gradient of first slope 2 is the same with the gradient of second slope 4, and the inclination that forms between first slope 2 and the horizontal plane is forty-five degrees, can not excessively hinder the effect of air inlet, has effectively increased the velocity of flow of wind simultaneously.

The projection under the second plane 5 falls into the inner side of the storage container 6, so that the position with high wind speed can pass through an oil film 8 on the surface of food 7, and the projection under the first slope 2 exceeds the outer side of the storage container 6, thereby effectively increasing the size of the air inlet position and facilitating the introduction of a large amount of wind.

The two sides of the space formed between the upper cover 1 and the storage container 6 are respectively provided with an air inlet end 9 and an air outlet end 10, and cold air is introduced from the air inlet end 9 and then discharged from the air outlet end 10.

The quantity of food 7 sets up to a plurality of, and the even distribution of food 7 is in the inboard of depositing container 6, effectively utilizes the parking space of depositing in the container 6, and oil film 8 covers the inner wall of depositing container 6 at the upper end of food 7 and border department's attached, and it is even to cover, effectively reduces the loss of 7 moisture in food.

In operation, before the food 7 enters the quick-freezing equipment, special oil sealing treatment is carried out. And (3) sealing oil on the surface of the food 7 which is in large contact with the air, standing until the oil film 8 is stable, and then entering quick-freezing equipment for air-cooling quick freezing. The process utilizes the characteristic of good water resistance of the oil, ensures that food is not in direct contact with air, blocks water vapor evaporation to a greater extent, and utilizes the characteristic of good heat conductivity of the oil to cool the surface of the food more quickly. When the air passes through the flow guide inclined plane, the space is gradually reduced, the air flow rate is higher, the upper cover 1 is improved, the speed of cold air flowing through the surface of the food 7 is increased, the food 7 is cooled more quickly, and the water loss amount and speed of the food 7 are reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A device for extending the freshness protection effect of food, comprising a storage container (6) and an upper cover (1) covering the storage container, characterized in that: the lower end face of the upper cover (1) is provided with a flow guide air surface from the edge to the middle, food (7) is placed in the inner side of the storage container (6), and an oil film (8) covering the upper end face of the food (7) is poured into the inner side of the storage container (6).

2. The apparatus for extending the freshness of food products of claim 1, wherein: the diversion wind surface comprises a first slope (2), a first plane (3), a second slope (4) and a second plane (5) which are sequentially connected from top to bottom.

3. The apparatus for extending the freshness of food according to claim 2, wherein: the inclination of the first slope (2) is the same as that of the second slope (4), and the inclination angle formed between the first slope (2) and the horizontal plane is forty-five degrees.

4. The apparatus for extending the freshness of food according to claim 2, wherein: the projection right below the second plane (5) falls into the inner side of the storage container (6), and the projection right below the first slope (2) exceeds the outer side of the storage container (6).

5. The apparatus for extending the freshness of food products of claim 1, wherein: the two sides of a space formed between the upper cover (1) and the storage container (6) are respectively provided with an air inlet end (9) and an air outlet end (10).

6. The apparatus for extending the freshness of food products of claim 1, wherein: the food storage container is characterized in that the number of the food (7) is set to be a plurality of, the food (7) is uniformly distributed on the inner side of the storage container (6), and the oil film (8) covers the upper end face and the edge of the food (7) and is attached to the inner wall of the storage container (6).