CN110763054A - Heat transfer device capable of quickly changing food temperature and manufacturing method thereof - Google Patents

Abstract

The invention provides a heat transfer device for rapidly changing the temperature of food, comprising a first plate, a second plate, a cavity and an energy storage medium. The first plate is a high thermal conductivity device, which is placed on the upper layer of the heat transfer device; the lower end of the first plate, the cavity, the energy storage medium and the second plate constitute a high energy storage device and are placed on the lower layer of the heat transfer device. The high thermal conductivity device and the high energy storage device are embedded in each other, which can quickly absorb the heat in the food or release the heat in the heat transfer device, and spread the heat evenly, so that the food can quickly reach the target temperature. The present invention also provides a method for manufacturing the heat transfer device, the first plate and the second plate can be sealed and connected only by hot pressing, welding or bonding; or, the first plate and the second plate are integrally formed, and the The main body of the heat transfer device is formed by extrusion, and the end cover can form a closed structure with the main body of the device by bonding, welding or screwing.

Description

A heat transfer device for rapidly changing food temperature and its manufacturing method

technical field

The invention belongs to the technical field of heat transfer, and in particular relates to a heat transfer device for rapidly changing the temperature of food and a manufacturing method thereof.

Background technique

For bacteriostatic needs, frozen foods are usually stored at -18°C. For such food, it needs to be thawed before cooking. Common thawing methods have their own advantages and disadvantages, such as: (1) thawing frozen food in the natural environment saves energy, but it takes a long time and is easy to breed bacteria; (2) thawing frozen food in a microwave oven is quick and convenient, but the thawing is uneven , high energy consumption; (3) soaking and freezing, fast, but the food is easily contaminated.

On the other hand, the temperature of freshly cooked food is usually around 100°C, and usually, the best eating temperature of food is between 50°C-80°C. There is also a need for food to be cooled to an edible temperature as quickly as possible.

SUMMARY OF THE INVENTION

In view of the above shortcomings, the present invention proposes a heat transfer device for rapidly changing food temperature and a manufacturing method thereof. The solution embeds a high thermal conductivity device and a high energy storage device into each other, which can improve the efficiency of changing food temperature.

A heat transfer device for rapidly changing the temperature of food, the heat transfer device comprising:

The first plate is located on the upper layer of the heat transfer device;

The second plate is located at the lower layer of the heat transfer device, the middle of the second plate is arranged in a concave shape, and is sealed with the first plate;

a cavity, the first plate is connected with the second plate to form a cavity;

The energy storage medium is filled in the cavity and is in contact with the lower end of the first plate.

Preferably, the appearance of the heat transfer device is plate-shaped or butterfly-shaped.

Preferably, the first plate has a channel, and the channel is filled with a heat transfer medium.

Preferably, the lower end of the first plate has a convex structure toward the direction of the second plate.

Preferably, the upper surface of the first plate is coated with a high thermal conductivity material.

Preferably, the first plate material is metal, ceramic or polymer material.

Preferably, the energy storage medium is an inorganic hydrated salt, paraffin or an organic energy storage material.

Preferably, both ends of the cavity are provided with end caps, and the end caps are connected with the first sheet material and the second sheet material by bonding, welding or screwing.

A manufacturing method of a heat transfer device for rapidly changing the temperature of food, characterized in that the first plate is sealed and filled with a heat transfer medium, the recess of the second plate is filled with an energy storage medium, and the first plate and the second plate are filled with a heat transfer medium. The edges are sealed and connected by hot pressing, welding or bonding to form a closed heat transfer device;

Alternatively, a layer of high thermal conductivity material is attached to the upper surface of the first plate by means of spraying, coating, bonding or vapor deposition, the recesses of the second plate are filled with energy storage medium, and the first plate and the second plate are The edges are sealed and connected by hot pressing, welding or bonding to form a closed heat transfer device.

A manufacturing method of a heat transfer device for rapidly changing food temperature, characterized in that the first plate and the second plate are integrally formed into a heat transfer device body by extrusion molding, the upper layer is filled with a heat transfer medium and the lower layer is filled with a storage medium. After the working medium is activated, the end cover is connected to the main body of the device by bonding, welding, or screwing to form a closed heat transfer device.

The technical scheme of the present invention provides a heat transfer device for rapidly changing the temperature of food, comprising a first plate, a second plate, a cavity formed between the first plate and the second plate, and an energy storage medium filled in the cavity. The first plate is a high thermal conductivity device, which has the characteristics of fast heat transfer rate and good temperature uniformity; the lower end of the first plate, the cavity, the energy storage medium and the second plate form a high energy storage device. The heat conduction device and the high energy storage device are embedded in each other, which can quickly absorb the heat in the food or release the heat in the heat transfer device, and spread the heat evenly, so that the food can quickly reach the target temperature. The invention also provides a manufacturing method of the heat transfer device, which is simple and practical, and has remarkable effects.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

FIG. 1 is a working principle diagram of a heat transfer device for rapidly changing the temperature of food according to the present invention.

2 is a schematic cross-sectional structural diagram of an embodiment of a heat transfer device for rapidly changing the temperature of food according to the present invention.

3A to 3D are schematic views of the structure of the channel in the first plate in FIG. 2 .

4 is a schematic cross-sectional structural diagram of another embodiment of a heat transfer device for rapidly changing the temperature of food according to the present invention.

5A to 5C are schematic diagrams of the protrusion structure in FIG. 4 .

6 is a schematic cross-sectional structure diagram and an exploded view of another embodiment of a heat transfer device for rapidly changing the temperature of food according to the present invention.

Description of reference numerals: 1-heat transfer device, 01-food, 10-first plate, 11-upper surface of first plate, 111-upper plate, 112-lower plate, 113-channel, 114-heat transfer medium , 12-protruding structure, 13-high thermal conductivity device, 20-second plate, 21-high energy storage device, 22-end cover, 30-cavity, 40-energy storage medium, 50-high thermal conductivity material.

The implementation, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be an intervening component at the same time. When a component is considered to be "set on" another component, it may be directly on the other component or there may be a co-located component. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

It should be further noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for the purpose of description, and should not be construed as instructions Either imply their relative importance or imply the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

An embodiment of the present invention provides a heat transfer device for changing the temperature of food. Please refer to FIG. 1 . The heat transfer device 1 includes a first plate 10 , a second plate 20 , and a space between the first plate 10 and the second plate 20 . The formed cavity 30 and the energy storage medium 40 are formed.

The first plate 10 is arranged on the upper layer of the heat transfer device, and the upper surface 11 of the first plate 10 is in sufficient contact with the food 01 to exchange heat with the food 01; the lower end of the first plate has a protruding structure 12, which increases the energy storage capacity. The contact area of the material 40 is convenient for the heat to be quickly conducted between the energy storage medium 40 , the first plate 10 and the food 01 .

The middle of the second plate 20 is provided in a concave shape, and the edge of the second plate 20 is connected to the edge of the first plate 10 correspondingly.

The cavity 30 is formed by the sealing connection of the first plate 10 and the second plate 20 .

The energy storage medium 40 is sealed and filled in the cavity 30 and is in contact with the protruding structure 12 at the lower end of the first plate 10 .

It can be understood that, when the food 01 is in contact with the upper surface 11 of the first plate 10, due to the temperature difference between the two, heat exchange will be performed after the two are in contact. At the same time, the first plate 10 can quickly transfer the exchanged energy to the places far away from the food 01 on the first plate 10 by utilizing the characteristics of high thermal conductivity and low thermal resistance, forming a large area on the first plate 10. The formation of these low temperature gradient regions, even the uniform temperature regions, improves the heat exchange capacity between the first plate 10 and the surrounding environment, for example, the upper surface 11 of the first plate 10 is in contact with the air, Convective heat exchange and radiation heat exchange, thereby accelerating the temperature change of the food, the first plate 10 can dissipate the energy exchanged from the food 01 to the surrounding environment. That is, the first plate 10 utilizes its strong thermal conductivity (eg, high thermal conductivity) to increase the heat exchange capability between the food 01 and the surrounding environment, thereby achieving the effect of rapidly changing the temperature of the food. On the other hand, the protruding structure 12 at the lower end of the first plate 10 is also in contact with the energy storage medium 40 , and heat exchange can be performed between the two, so that the energy obtained from the food 01 can be stored in the energy storage medium 40 .

Further, the high thermal conductivity device 13 can form a wide range of low temperature gradient regions on the heat transfer device 1 by virtue of its characteristics of high thermal conductivity and low thermal resistance, and even a uniform temperature region, which increases the size of the high thermal conductivity device 13 . The heat exchange capacity between the high energy storage device 21 and the high thermal conductivity device 13 and the high energy storage device 21 can be provided with some wavy, sawtooth, and striped structures to increase the thermal conductivity between the two devices. contact area, thereby enhancing the heat exchange capacity between the two. The high energy storage device 21 contains an energy storage working medium 40 with a high specific heat capacity. After absorbing heat, the temperature change is smaller than that of a substance with a low specific heat capacity, which can continuously absorb heat and store it in the device itself. Inside. That is, the high thermal conductivity device 13 conducts the energy exchanged from the food to the energy storage device 21 for storage, thereby realizing the effect of rapidly changing the temperature of the food.

The technical scheme of the present invention provides a heat transfer device for rapidly changing the temperature of food, comprising a first plate, a second plate, a cavity formed between the first plate and the second plate, and an energy storage medium filled in the cavity. The heat transfer device is a layered structure up and down, and is embedded in each other to form an integral device. The upper layer of this device is a high thermal conductivity layer, which is used to contact food; the lower layer is a high energy storage layer, which is used to store heat. When the heat transfer device is used, it is usually placed horizontally. Because the air in contact with the upper layer has better fluidity, the upper layer can be used as a high thermal conductivity layer, so that the high thermal conductivity layer can conduct sufficient heat exchange with the air. Affected by the placement of the table top, the air around it has poor fluidity, that is, the convective heat transfer effect is poor. Therefore, the high energy storage layer is placed in the lower layer, and the conduction heat exchange between the high thermal conductivity layer and the high energy storage layer is used to enhance the whole. The heat transfer capacity of the heat transfer device.

In an embodiment of the present invention, please refer to FIG. 2 , in this embodiment, the first board 10 is a double-layer composite board, and of course, it can be a single-layer or multi-layer board structure in other embodiments. The first plate 10 can be made of a metal material or a polymer material, and an aluminum material with better thermal conductivity is preferably used here. The upper surface of the first plate 10 is flat and used for contacting food. A closed channel 113 with a specific structure is formed between the upper plate 111 and the lower plate 112 of the first plate 10 , and the channel 113 is correspondingly convex at the lower end of the first plate 10 . Structure 12. The edges of the upper sheet 111 , the lower sheet 112 and the second sheet 20 are connected together by hot pressing, welding or bonding. A manufacturing method of a high heat transfer device is disclosed in the application number 201721039920.X. According to this method, the heat transfer medium 114 is added into the channel 113, and the heat transfer medium 114 is sealed in the channel 113, so that the upper layer plate 111, the lower layer plate 112, the channel 113, and the heat transfer medium 114 are formed. High thermal conductivity device 13 . Due to the effect of the heat transfer medium 114 , when the first plate 10 is locally heated or cooled, the first plate 10 can quickly transfer energy to other areas on the first plate 10 , thereby forming a uniform pattern on the first plate 10 . heat and dissipate energy into the air through convection and radiation heat exchange. A closed cavity 30 is formed between the lower plate 112 and the second plate 20, and an energy storage medium 40 is added into the cavity 30. The energy storage medium 40 here is preferably an inorganic hydrated salt, such as nitrate, carbonate, phosphate Or acetate, these materials are easy to obtain, the cost is moderate, paraffin, etc., or organic energy storage materials can also be used. The lower layer plate 112 , the second plate 20 , the cavity 30 and the energy storage liquid 40 constitute the high energy storage device 21 . The energy storage medium 40 is in contact with the protruding structures 12 on the lower plate 112 , and the energy obtained by the first plate 10 can be transferred to the energy storage medium 40 .

3A to 3D are schematic diagrams of the channel structure in the first plate in FIG. 2 , the channel 113 formed between the upper plate 111 and the lower plate 112 can be a hexagonal network structure (Fig. 3A), well Font-shaped network structure (Fig. 3B), serpentine structure (Fig. 3C), ring network structure (Fig. 3D) or other geometric figures connected to each other constitute a network structure. A hexagonal network structure is preferred here.

4 is a schematic cross-sectional structural diagram of another embodiment of a heat transfer device for rapidly changing the temperature of food according to the present invention. The upper surface of the first plate 10 has a layer of high thermal conductivity material 50, such as nano-carbon coating or graphene, and the high thermal conductivity material 50 can be attached to the first plate 10 by spraying, coating, bonding or vapor deposition, etc. On the upper surface 11 of the first plate 10, the material of the first plate 10 can be metal, ceramic, or polymer material, and the metal material aluminum or aluminum alloy is preferred here. The lower end of the first plate 10 is provided with protruding structures 12, and these structures can be formed by casting and forging. The first plate 10 is connected with the second plate 20 to form a sealed cavity, and an energy storage medium 40 is arranged in the cavity. The energy storage medium 40 here is preferably an inorganic hydrated salt, paraffin, etc. energy material. The protruding structure 12 is in contact with the energy storage medium 40 . When the food is placed on the upper surface of the heat-conducting device 1, the high heat-conducting material 50 quickly transfers the energy to other areas on the first plate 10, and dissipates the energy into the air through convection heat exchange and radiation heat exchange. The energy is transferred to the first plate 10 , and the protruding structures 12 on the first plate 10 are in contact with the energy storage medium 40 to transfer the energy to the energy storage medium 40 .

FIG. 5 is a schematic structural diagram of the protruding structures 12 in FIG. 4 . The protruding structures 12 may be columnar arrays ( FIG. 5A ), concentric rectangular structures ( FIG. 5B ), grid-like structures ( FIG. 5C ), or other Line structure, preferably a columnar array structure here.

6 is a schematic cross-sectional structure diagram (top) and an exploded view (bottom) of another embodiment of a heat transfer device for rapidly changing the temperature of food according to the present invention. The first plate 10 and the second plate 20 of the heat transfer device 1 are of the same material and can be integrally formed. The upper layer of the heat transfer device 1 has a channel 113 , the channel 113 is equipped with a heat transfer medium 114 , and the cavity 30 is installed There is an energy storage medium 40 . The energy storage medium here is preferably an inorganic hydrated salt, paraffin wax, etc., or an organic energy storage material can also be used. The device body of this embodiment can be formed by extrusion process, and aluminum extrusion process is preferred here, and other metal or polymer material extrusion process can also be used for forming. The heat transfer device 1 is provided with end caps 22 at both ends. The end caps 22 seal the channel 113 and the cavity 30 respectively to form a closed cavity independent of each other. The sealing method can be bonding, welding, or screwing In a tightening manner, the end cap 22 is tightly connected with the device 1 . When the food 01 is placed on the upper surface of the heat transfer device 1, the heat transfer medium 114 is heated to start work, and the energy is quickly transferred to other areas on the device 1, and the energy is dissipated to the In the air, at the same time, the energy is transferred to the energy storage medium 40 through the protruding structure 12 .

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A heat transfer device for rapidly changing the temperature of food, comprising: a first plate, located on the upper layer of the heat transfer device; The second plate is located at the lower layer of the heat transfer device, the middle of the second plate is concave, and is sealed with the edge of the first plate; a cavity, the first plate and the second plate are connected to form a cavity; The energy storage medium is filled in the cavity and is in contact with the lower end of the first plate. 2 . The heat transfer device according to claim 1 , wherein the appearance of the heat transfer device is a plate shape or a butterfly shape. 3 . 3 . The heat transfer device according to claim 1 , wherein the first plate has a channel, and the channel is filled with a heat transfer medium. 4 . 4 . The heat transfer device according to claim 1 , wherein the lower end of the first plate has a convex structure toward the direction of the second plate. 5 . 5 . The heat transfer device of claim 1 , wherein the upper surface of the first plate is coated with a high thermal conductivity material. 6 . 6 . The heat transfer device according to claim 1 , wherein the material of the first plate is metal, ceramic or polymer material. 7 . 7 . The heat transfer device according to claim 1 , wherein the energy storage medium is an inorganic hydrated salt, paraffin or an organic energy storage material. 8 . 8 . The heat transfer device according to claim 1 , wherein end caps are provided at both ends of the cavity, and the end caps are formed by connecting the first plate and the second plate by bonding, welding or screwing. 9 . closed structure. 9. A method of manufacturing a heat transfer device for rapidly changing the temperature of food, wherein the first plate is sealed and filled with a heat transfer medium, the recess of the second plate is filled with an energy storage medium, and the first plate and the The edge of the second plate is sealed and connected by hot pressing, welding or bonding to form a closed heat transfer device; Alternatively, a layer of high thermal conductivity material is attached to the upper surface of the first plate by means of spraying, coating, bonding or vapor deposition, the recesses of the second plate are filled with energy storage medium, and the first plate and the second plate are The edges are sealed and connected by hot pressing, welding or bonding to form a closed heat transfer device. 10. A method for manufacturing a heat transfer device for rapidly changing the temperature of food, wherein the first plate and the second plate are integrally formed into a heat transfer device body by extrusion molding, and the upper layer is filled with a heat transfer medium and a lower layer. After the energy storage medium is filled, the end cover is connected to the main body of the device by bonding, welding, or screwing to form a closed heat transfer device.

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