CN214710062U - Thawing device - Google Patents

Abstract

The utility model provides a thawing apparatus, include: the device comprises a shell, a first sealing ring, a second sealing ring and a sealing ring, wherein a cavity is formed in the shell and provided with a first wall surface and a second wall surface which are opposite; the phase-change medium is arranged in the cavity, and can be contacted with the first wall surface to be vaporized and contacted with the second wall surface to be liquefied when the unfreezing device is in a working state; wherein at least a part of the first wall surface is configured as a concavo-convex structure. The utility model provides a thawing apparatus passes through concave-convex structure's setting, can promote the heating area of liquid phase transition medium at first wall, and great acceleration phase transition medium vapour-liquid conversion in the cavity to realize the effect of unfreezing fast. And the whole thawing process is safe and pollution-free, the cyclic utilization of the phase change medium is realized, and the production cost of the thawing device is reduced.

Description

Thawing device

Technical Field

The utility model relates to a technical field that unfreezes particularly, relates to a thawing apparatus.

Background

Thawing apparatus with function of unfreezing fast is very common article in the life, and the thawing apparatus that common on the market has two main categories: one is that the heat exchange efficiency of the frozen object and the unfreezing device is improved by utilizing a metal plate with high heat conductivity and adding a slot and the like; the other type is that the cold energy on the heat conducting plate is taken away by heat exchange media such as water and the like in a flowing mode, so that the quick thawing is realized. The first thawing device can easily reach cold and hot balance in the using process, so that the thawing efficiency is influenced; the second thawing device needs an external water source or controls cold and hot reflux, and has a complex structure and inconvenient operation.

In addition, among the correlation technique, heat transfer medium's such as water heated area is less, and this directly leads to thawing apparatus's heat exchange efficiency low, and then influences the thawing performance who knows the device that freezes.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a thawing apparatus.

The utility model provides a thawing apparatus, include: the device comprises a shell, a first sealing ring, a second sealing ring and a sealing ring, wherein a cavity is formed in the shell and provided with a first wall surface and a second wall surface which are opposite; the phase-change medium is arranged in the cavity, and can be contacted with the first wall surface to be vaporized and contacted with the second wall surface to be liquefied when the unfreezing device is in a working state; wherein at least a part of the first wall surface is configured as a concavo-convex structure.

The utility model provides a thawing apparatus includes casing and phase change medium. The shell is internally provided with a chamber, and the chamber comprises a first wall surface and a second wall surface which are oppositely arranged; when the device is in a working state, the second wall surface is positioned above the first wall surface. The phase change medium is arranged in the cavity; when the unfreezing device works, the vapor phase change medium continuously releases heat to the second wall surface to be liquefied, and the partial heat can be used for unfreezing the object to be unfrozen; meanwhile, the liquid phase-change medium generated by liquefaction sinks in the chamber, absorbs heat from the first wall surface to be vaporized and changed into the vapor phase-change medium, and the vapor phase-change medium continuously rises in the chamber and is liquefied on the second wall surface to supply heat to the object to be thawed. The liquefaction and vaporization are circulated in a reciprocating manner, so that the heat of the first wall surface is continuously transferred to the second wall surface, the whole thawing device absorbs the cold of the object to be thawed, and the thawing effect is achieved.

In particular, at least part of the first wall surface is configured as a relief structure. When the liquid phase-change medium drips on the first wall surface, the liquid phase-change medium drips on the concave-convex structure, the contact area of the liquid phase-change medium and the first wall surface is greatly improved due to the design of the concave-convex structure, and the heating area of the liquid phase-change medium on the first wall surface is further improved, so that the heat absorbed by the liquid phase-change medium in unit time is improved, the vapor-liquid conversion of the phase-change medium in the cavity is greatly accelerated, and the effect of quick thawing is realized.

And, because the phase change medium takes place liquefaction and vaporization respectively at second wall and first wall, can be fast and the high-efficient heat exchange process of accomplishing the thing of waiting to unfreeze to guarantee that whole process heat transfer is even and high-efficient on the one hand, on the other hand heat transfer mode is safe pollution-free, effectual unfreezing efficiency and the quality that improves.

In addition, the phase change medium forms liquid phase change medium and vapour phase change medium in the cavity, and along with the emergence of liquefaction and vaporization, liquid phase change medium sinks to first wall from the second wall and regenerates vapour phase change medium and continues to rise, whole process is dynamic and reciprocating cycle process, the characteristic of the phase change medium of abundant utilization, and whole process need not to mend new phase change medium, the inside phase change medium of cavity can cyclic utilization, furthest has guaranteed thawing apparatus's environmental protection performance and economic performance.

Therefore, the utility model provides a thawing apparatus passes through concave-convex structure's setting, can promote the heated area of liquid phase transition medium at first wall, and great acceleration phase transition medium vapour-liquid conversion in the cavity to realize the effect of unfreezing fast. And the whole thawing process is safe and pollution-free, the cyclic utilization of the phase change medium is realized, and the production cost of the thawing device is reduced.

According to the utility model discloses above-mentioned technical scheme's thawing apparatus can also have following additional technical feature:

in the above technical solution, the liquid phase change medium covers at least a part of the concave-convex structure, and can be filled in the concave region of the concave-convex structure.

In the technical scheme, the phase change medium exists in the cavity in a vapor-liquid mixed state in a standing state. The liquid phase-change medium covers at least part of the concave-convex structure and can be filled in the concave area of the concave-convex structure so as to ensure the contact area of the liquid phase-change medium and the first wall surface.

In any of the above technical solutions, a height difference between the concave area and the convex area in the concave-convex structure is greater than 0mm and less than or equal to 10 mm.

In the technical scheme, the first wall surface is of a planar structure under the macroscopic view and is in a relatively flat state as a whole; and the first wall surface has the above-described concavo-convex structure in a microscopic view. By the design, on one hand, the contact area between the liquid phase change medium and the first wall surface can be improved, and on the other hand, the liquid phase change medium on the first wall surface is prevented from being always reserved in the concave area of the concave-convex structure. Specifically, the concave-convex structure at the microscopic level can be ensured by designing the height difference between the concave area and the convex area in the concave-convex structure to be greater than 0mm and less than or equal to 10 mm.

In any of the above technical solutions, the first wall surface is provided with a protrusion to form a concave-convex structure; or the first wall surface is provided with a concave part to form a concave-convex structure; or the first wall surface is provided with alternately distributed convex parts and concave parts to form a concave-convex structure.

In this embodiment, the concave-convex structure may be formed in any of the following manners: the concave-convex structure may be formed by providing the first wall surface with a projection, the concave-convex structure may be formed by providing the first wall surface with a recess, and the concave-convex structure may be formed by providing the first wall surface with both a projection and a recess.

In any of the above technical solutions, the first wall surface is covered with the concave-convex structure.

In this technical scheme, concave-convex structure spreads all over first wall. Therefore, no matter which position of the first wall surface the liquid phase-change medium is located, the heating area of the liquid phase-change medium and the heating area of the first wall surface can be guaranteed by the concave-convex structure, so that the contact area of the liquid phase-change medium and the first wall surface is increased, the heating area of the liquid phase-change medium on the first wall surface is increased, the vapor-liquid conversion of the phase-change medium in the cavity is accelerated, and the effect of quick defrosting is achieved.

In any one of the above technical schemes, the phase change medium is a vapor-liquid phase change medium, and when the thawing device is in a non-working state, the vapor-liquid phase change medium exists in the cavity in a vapor-liquid mixed state; wherein, the phase-change medium of vapor phase contacts with the second wall, and the phase-change medium of liquid phase contacts with the first wall.

In the technical scheme, the phase change medium is a vapor-liquid phase change medium, and when the thawing device is in a non-working state, the phase change medium exists in the cavity in a vapor-liquid mixed state; and the density of the liquid phase-change medium is greater than that of the vapor phase-change medium. Therefore, the liquid phase-change medium is positioned below the shell and is in contact with the first wall surface, and the liquid phase-change medium is continuously vaporized to absorb heat from the first wall surface; the vapor phase-change medium is positioned above the shell and is in contact with the second wall surface, and is continuously liquefied to release heat to the second wall surface; the phase change medium is continuously vaporized and liquefied inside the shell to continuously transfer heat from the bottom of the shell to the top of the shell to thaw the matter to be thawed.

In any of the above technical solutions, the phase transition temperature of the phase change medium is greater than or equal to 5 ℃ and less than or equal to 25 ℃.

In the technical scheme, the temperature range of the object to be unfrozen is between-5 ℃ and-15 ℃, the phase change temperature of the selected phase change medium is greater than or equal to 5 ℃ and less than or equal to 25 ℃, so that the temperature of the object to be unfrozen is between 5 ℃ and 25 ℃. Wherein, the phase transition temperature of the phase transition medium can be selected to be 5 ℃, 10 ℃, 15 ℃, 20 ℃ and 25 ℃, and when the temperature is lower than 5 ℃, the temperature of the unfrozen object can not be guaranteed to be within a controllable temperature after the unfreezing.

Specifically, the matter to be defrosted, such as frozen steak, is placed on the defreezing plate (the temperature of frozen meat is about-5 deg.C to-15 deg.C), and the vapor phase-change medium contacts the second wall surface to be condensed into liquid state, and then the sinking process is carried out; the temperature of the lower part is higher, the phase change medium is vaporized by heat, the phase change medium which is changed into a vapor state again floats upwards, fills the cavity, is contacted with the second wall surface and is liquefied again, the circulation is repeated, and finally the temperature of the unfrozen frozen steak is controlled to be 5-25 ℃.

In any of the above solutions, the ratio of the volume of the liquid phase change medium to the volume of the chamber is less than or equal to 3/5.

In this embodiment, the phase change medium is liquefied and vaporized in the chamber, and the liquid phase change medium sinks and the vapor phase change medium rises, so that the fluidity of the entire process is high. Therefore, the phase change medium in liquid state may not fill the whole chamber, but it is ensured that the ratio of the volume of the phase change medium in liquid state to the volume of the chamber is less than or equal to 3/5, to ensure maximum falling and floating of the phase change medium, and to ensure that sufficient space is provided for vaporization.

Above-mentioned technical scheme is particularly, as the volumetric ratio of phase change medium volume and cavity, when being greater than 3/5, accomplish the droppings that the vapour phase change medium of liquefaction becomes a thigh in a large number, cause inside heat transfer rate's decline, and the first wall of cavity lower floor interval can't provide sufficient heat in order to guarantee its smooth vaporization for a large amount of liquid phase change medium, not only cause phase change medium's wasting of resources, and caused heat exchange efficiency's reduction, consequently, guarantee that the volumetric ratio of liquid phase change medium's volume and cavity is less than or equal to 3/5, can effectual improvement heat exchange efficiency, and the waste of phase change medium has been avoided.

In any of the above technical solutions, the housing further includes: the heat absorption end is arranged on one side of the chamber, and the first wall surface is formed at the heat absorption end; the heat release end is arranged at the other side of the cavity, and the second wall surface is formed at the heat release end; the working surface is arranged at the heat release end.

In this solution, the housing further comprises a heat absorbing end and a heat releasing end. The heat absorption end is in a room temperature or normal temperature state, when the liquid phase change medium in the cavity sinks to the first wall surface, namely the heat absorption end, the temperature of the liquid phase change medium is lower than that of the heat absorption end, so that heat from the heat absorption end can be absorbed, vaporization is ensured, and the subsequent process of converting the liquid phase change medium into the vapor phase change medium is completed; the heat releasing end is contacted with the object to be thawed, so that the temperature of the heat releasing end is reduced, the vapor phase change medium is ensured to be liquefied when being contacted with the heat releasing end, and the process of converting the vapor phase change medium into the liquid phase change medium is completed.

The process specifically includes that the sunken liquid phase-change medium is in contact with the heat absorption end and absorbs heat to complete vaporization, the ascending vapor phase-change medium is in contact with the heat release end and releases heat to complete liquefaction, and the partially released heat is used for the unfreezing process of the object to be unfrozen, so that the heat exchange process can be carried out efficiently.

In addition, the shell also comprises a working surface which is arranged on one side of the heat release end and can be used for placing the object to be thawed.

In any of the above technical solutions, the casing is a heat conducting plate, and the cavity is an interlayer in the heat conducting plate; and/or the phase change medium comprises an organic phase change material and/or an inorganic phase change material.

In this technical scheme, the casing divide into upper and lower both sides structure, and wherein the outer terminal surface of the superstructure of casing forms the working face for place and wait to unfreeze the thing, and the casing adopts high heat conduction metal substrate, including but not limited to high aluminium, stainless steel material of leading, because the process that the heat transfer was carried out to liquid phase change medium and vaporous phase change medium needs, consequently high heat conduction metal substrate is because the high heat conduction characteristic of self, can be with the transmission of a large amount of heats that the liquefaction produced for waiting to unfreeze the thing.

In addition, phase change media include organic phase change media and/or inorganic phase change media, including but not limited to: fluorotrichloromethane, water and ethanol.

Specifically, the object to be thawed is placed on the working surface of the upper structure of the casing, wherein the working surface is located in the cavity, and the second wall surface is opposite to the working surface, and through the high temperature conduction characteristic of the casing, on one hand, the low temperature of the object to be thawed is transferred to the second wall surface, and on the other hand, a large amount of heat generated by liquefaction of the vaporized phase change medium is transferred to the object to be thawed, so that the heat exchange process is completed. Therefore, through the selection of the materials, the thawing device has excellent temperature conducting performance and low cost performance, the thawing process is further accelerated, and the cost is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a thawing apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the thawing apparatus shown in FIG. 1;

fig. 3 is a partially enlarged view of the thawing apparatus of the embodiment shown in fig. 2 at a.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

102, 104 chambers, 106 first walls, 108 second walls, 110 phase change media, 112 relief structures, 114 heat sink ends, 116 heat sink ends, 118 working surfaces.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Thawing apparatuses provided according to some embodiments of the present invention are described below with reference to fig. 1 to 3.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a thawing apparatus, including: a housing 102 and a phase change medium 110.

As shown in fig. 2, the housing 102 has a chamber 104 therein, and the chamber 104 includes a first wall 106 and a second wall 108 disposed opposite to each other; the second wall 108 is above the first wall 106 when the defrosting device is in operation. A phase change medium 110 is disposed within the chamber 104; when the thawing device works, the phase change medium 110 in the vapor state continuously releases heat to the second wall surface 108 to liquefy, and the part of heat can be used for thawing the object to be thawed; at the same time, the liquid phase change medium 110 generated by liquefaction sinks in the chamber 104, the liquid phase change medium 110 absorbs heat from the first wall 106 to be vaporized into the vapor phase change medium 110, and the vapor phase change medium 110 continuously rises in the chamber 104 and is liquefied at the second wall 108 to supply heat to the object to be thawed. The above-mentioned liquefaction and vaporization cycle of reciprocating, constantly transmit the heat of first wall 106 to second wall 108 for whole thawing apparatus absorbs the cold volume of the thing of waiting to thaw, reaches the effect of thawing.

In particular, as shown in fig. 2 and 3, at least part of the first wall surface 106 is configured as a relief structure 112. When the liquid phase-change medium 110 drops on the first wall surface 106, the liquid phase-change medium 110 drops on the concave-convex structure 112, and the design of the concave-convex structure 112 greatly improves the contact area between the liquid phase-change medium 110 and the first wall surface 106, so as to improve the heated area of the liquid phase-change medium 110 on the first wall surface 106, thereby improving the heat absorbed by the liquid phase-change medium 110 in unit time, which greatly accelerates the vapor-liquid conversion of the phase-change medium 110 in the chamber 104, and thus realizes the effect of rapid thawing.

Moreover, as the phase change medium 110 is liquefied and vaporized on the second wall surface 108 and the first wall surface 106 respectively, the heat exchange process of the object to be thawed can be completed quickly and efficiently, so that uniform and efficient heat exchange in the whole process is ensured, the heat exchange mode is safe and pollution-free, and the thawing efficiency and quality are effectively improved.

In addition, the phase change medium 110 forms the liquid phase change medium 110 and the vapor phase change medium 110 in the chamber 104, and along with the occurrence of liquefaction and vaporization, the liquid phase change medium 110 sinks from the second wall surface 108 to the first wall surface 106 and the vapor phase change medium 110 is regenerated to continuously rise, the whole process is a dynamic and reciprocating cyclic process, the characteristics of the phase change medium 110 are fully utilized, the whole process does not need to be supplemented with new phase change medium 110, the phase change medium 110 in the chamber 104 can be recycled, and the environmental protection performance and the economic performance of the thawing device are ensured to the greatest extent.

Therefore, the utility model provides a thawing apparatus passes through concave-convex structure 112's setting, can promote the heating area of liquid phase change medium 110 at first wall 106, and great acceleration phase change medium 110 vapour-liquid conversion in cavity 104 to realize the effect of unfreezing fast. And the whole unfreezing process is safe and pollution-free, the cyclic utilization of the phase change medium 110 is realized, and the production cost of the unfreezing device is reduced.

In addition, a head adjustment device may be disposed on the housing 102, the adjustment device being in communication with the chamber 104 and being capable of changing the pressure inside the chamber 104, thereby adjusting the boiling point of the phase change medium 110. In this way, before the thawing apparatus is used, whether the pressure inside the chamber 104 is changed by using the adjusting device can be determined according to the actual temperature of the object to be thawed and the current boiling point of the phase change medium 110, so as to ensure that when the object to be thawed is placed on the thawing apparatus for thawing, the phase change medium 110 can be in a boiling state and continuously vaporized and liquefied in the chamber 104, and further release heat to the object to be thawed to realize the thawing effect.

As shown in fig. 1 and 2, a second embodiment of the present invention provides a thawing apparatus, including: a housing 102 and a phase change medium 110.

As shown in fig. 2, the housing 102 has a cavity 104 therein, the cavity 104 includes a first wall 106 and a second wall 108 disposed opposite to each other, at least a portion of the first wall 106 is configured as a concave-convex structure 112; a phase change medium 110 is disposed within the chamber 104. When the thawing device works, the phase change medium 110 in the vapor state continuously releases heat to the second wall surface 108 to liquefy, and the part of heat can be used for thawing the object to be thawed; meanwhile, the liquid phase change medium 110 generated by liquefaction sinks in the chamber 104, the liquid phase change medium 110 drops on the first wall 106, the liquid phase change medium 110 absorbs heat from the first wall 106 to be vaporized into the vapor phase change medium 110, the vapor phase change medium 110 continuously rises in the chamber 104 and is liquefied again on the second wall 108, and the process is repeated to thaw the object to be thawed.

In this embodiment, further, the phase change medium 110 exists in a vapor-liquid mixed state inside the cavity in the stationary state. The liquid phase-change medium 110 covers at least a portion of the concave-convex structure 112, and may be filled in a concave region of the concave-convex structure 112 to ensure a contact area between the liquid phase-change medium 110 and the first wall 106.

In this embodiment, further, as shown in fig. 2 and 3, the first wall 106 is a planar structure under a macro scale, and is in a relatively flat state as a whole; and the first wall 106 has the above-mentioned rugged structure 112 at a microscopic level. This ensures that the contact area between the liquid phase-change medium 110 and the first wall 106 is increased, and prevents the liquid phase-change medium 110 from remaining in the concave region of the concave-convex structure 112.

Specifically, the concavo-convex structure 112 at the microscopic level can be secured by designing the height difference L between the depressed region and the raised region in the concavo-convex structure 112 to be greater than 0mm and less than or equal to 10 mm. Here, the height difference L between the concave region and the convex region in the concave-convex structure 112 may be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., as long as the first wall surface 106 is microscopically provided with the concave-convex structure 112.

In this embodiment, further, the concave-convex structure 112 is formed by the following methods, but not limited to: the concave-convex structure 112 may be formed by providing a protrusion on the first wall surface 106, the concave-convex structure 112 may be formed by providing a recess on the first wall surface 106, and the concave-convex structure 112 may be formed by providing both a protrusion and a recess on the first wall surface 106.

In this embodiment, further, as shown in fig. 2 and 3, the concave-convex structure 112 is distributed over the entire first wall surface 106. Therefore, no matter where the liquid phase-change medium 110 is located on the first wall surface 106, the heated area of the liquid phase-change medium 110 and the concave-convex structure 112 can be ensured, so as to increase the contact area between the liquid phase-change medium 110 and the first wall surface 106, further increase the heated area of the liquid phase-change medium 110 on the first wall surface 106, accelerate the vapor-liquid conversion of the phase-change medium 110 in the chamber 104, and achieve the effect of rapid thawing.

As shown in fig. 1 and 2, a third embodiment of the present invention provides a thawing apparatus, including: a housing 102 and a phase change medium 110.

As shown in fig. 2 and 3, the housing 102 has a chamber 104 therein, the chamber 104 includes a first wall 106 and a second wall 108 disposed opposite to each other, at least a portion of the first wall 106 is configured as a concave-convex structure 112; a phase change medium 110 is disposed within the chamber 104. When the thawing device works, the phase change medium 110 in the vapor state continuously releases heat to the second wall surface 108 to liquefy, and the part of heat can be used for thawing the object to be thawed; meanwhile, the liquid phase change medium 110 generated by liquefaction sinks in the chamber 104, the liquid phase change medium 110 drops on the first wall 106, the liquid phase change medium 110 absorbs heat from the first wall 106 to be vaporized into the vapor phase change medium 110, the vapor phase change medium 110 continuously rises in the chamber 104 and is liquefied again on the second wall 108, and the process is repeated to thaw the object to be thawed.

In this embodiment, further, the phase change medium 110 is a vapor-liquid phase change medium 110, and at normal temperature, the phase change medium 110 exists in a vapor-liquid mixed state within the chamber 104; and, the density of the phase change medium 110 in the liquid state is greater than that of the phase change medium 110 in the vapor state. Thus, the liquid phase change medium 110 is in contact with the first wall 106 below the housing 102, and evaporation takes place continuously to absorb heat from the first wall 106; the phase-change medium 110 in the vapor state is located above the shell 102 and contacts the second wall 108, and is continuously liquefied to release heat to the second wall 108; the phase change medium 110 is continuously vaporized and liquefied inside the housing 102 to continuously transfer heat from the bottom of the housing 102 to the top of the housing 102 to thaw the contents to be thawed.

In this embodiment, further, the temperature of the object to be thawed is in the range of-5 ℃ to-15 ℃, and the phase transition temperature of the selected phase transition medium 110 is greater than or equal to 5 ℃ and less than or equal to 25 ℃, so as to ensure that the temperature of the object to be thawed after thawing is completed is in the range of 5 ℃ to 25 ℃. The phase transition temperature of the phase transition medium 110 can be selected from 5 ℃, 10 ℃, 15 ℃, 20 ℃ and 25 ℃, and when the temperature is lower than 5 ℃, the temperature of the unfrozen object can not be guaranteed to be within a controllable temperature after the unfreezing.

Specifically, the object to be thawed, such as a frozen steak, is placed on a thawing plate (the temperature of the frozen meat is about-5 ℃ to-15 ℃), the vapor phase-change medium 110 contacts the second wall surface 108, and is condensed into a liquid state to perform a sinking process; the temperature of the lower part is higher, the phase change medium 110 is vaporized by heat, the phase change medium 110 which is changed into the vapor state again floats upwards, fills the cavity 104, is contacted with the second wall surface 108 and is liquefied again, the circulation is repeated, and finally the temperature of the frozen steak after being unfrozen is controlled to be 5-25 ℃.

In this embodiment, further, since the phase change medium 110 is liquefied and vaporized in the chamber 104, the liquid phase change medium 110 sinks and the vapor phase change medium 110 rises, so that the whole process is more fluid. Thus, the phase change medium 110 in a liquid state may not fill the entire chamber 104, but rather, a ratio of the volume of the phase change medium 110 in a liquid state to the volume of the chamber 104 is ensured to be less than or equal to 3/5 to ensure maximum falling and rising of the phase change medium 110 and to ensure that sufficient space is provided for vaporization.

Specifically, in the above process, when the ratio of the volume of the phase change medium 110 to the volume of the chamber 104 is greater than 3/5, a large amount of liquefied vapor phase change medium 110 drops in a strand, which causes a decrease in the internal heat exchange rate, and the first wall 106 of the lower interval of the chamber 104 cannot provide sufficient heat for the large amount of liquid phase change medium 110 to ensure that the liquid phase change medium is smoothly vaporized, which not only causes resource waste of the phase change medium 110, but also causes a decrease in the heat exchange efficiency, thereby ensuring that the ratio of the volume of the liquid phase change medium 110 to the volume of the chamber 104 is less than or equal to 3/5, which can effectively improve the heat exchange efficiency, and avoid waste of the phase change medium 110.

As shown in fig. 1 and 2, a fourth embodiment of the present invention provides a thawing apparatus, including: a housing 102 and a phase change medium 110.

As shown in fig. 2 and 3, the housing 102 has a chamber 104 therein, the chamber 104 includes a first wall 106 and a second wall 108 disposed opposite to each other, at least a portion of the first wall 106 is configured as a concave-convex structure 112; a phase change medium 110 is disposed within the chamber 104. When the thawing device works, the phase change medium 110 in the vapor state continuously releases heat to the second wall surface 108 to liquefy, and the part of heat can be used for thawing the object to be thawed; meanwhile, the liquid phase change medium 110 generated by liquefaction sinks in the chamber 104, the liquid phase change medium 110 drops on the first wall 106, the liquid phase change medium 110 absorbs heat from the first wall 106 to be vaporized into the vapor phase change medium 110, the vapor phase change medium 110 continuously rises in the chamber 104 and is liquefied again on the second wall 108, and the process is repeated to thaw the object to be thawed.

In this embodiment, further, as shown in fig. 2, the housing 102 further includes a heat sink end 114 and a heat sink end 116. The heat absorption end 114 is at room temperature or normal temperature, when the liquid phase change medium 110 in the chamber 104 sinks to the first wall surface 106, i.e. the heat absorption end 114, the temperature of the liquid phase change medium 110 is lower than that of the heat absorption end 114, so that heat from the heat absorption end 114 is absorbed, thereby ensuring vaporization, and completing the subsequent process of converting the liquid phase change medium 110 into the vapor phase change medium 110; the heat releasing end 116 contacts with the object to be thawed, thereby reducing the temperature thereof, ensuring the vapor phase change medium 110 to be liquefied when contacting with the object, and completing the process of converting the vapor phase change medium 110 into the liquid phase change medium 110.

Specifically, the sinking liquid phase-change medium 110 contacts with the heat absorption end 114 and absorbs heat to complete vaporization, the rising vapor phase-change medium 110 contacts with the heat release end 116 and releases heat to complete liquefaction, and the released heat is used for the thawing process of the object to be thawed, so that the heat exchange process can be carried out efficiently. In addition, the housing 102 includes a working surface 118, and the working surface 118 is disposed on one side of the heat emitting end 116 and can be used for placing the object to be thawed.

In this embodiment, further, as shown in fig. 2, the housing 102 is divided into an upper structure and a lower structure, wherein the outer end surface of the upper structure of the housing 102 forms a working surface 118 for placing the object to be thawed, and the housing 102 is made of a high thermal conductivity metal substrate, including but not limited to high thermal conductivity aluminum and stainless steel, since the liquid phase change medium 110 and the vapor phase change medium 110 need to perform a heat exchange and transfer process, the high thermal conductivity metal substrate can transfer a large amount of heat generated by liquefaction to the object to be thawed due to its own high thermal conductivity property. In addition, phase change media 110 includes organic phase change media and/or inorganic phase change media, including but not limited to: fluorotrichloromethane, water and ethanol.

In the above process, as shown in fig. 2, the object to be thawed is placed on the working surface 118 of the upper layer structure of the housing 102, wherein the second wall 108 is opposite to the working surface 118 located in the chamber 104, and the low temperature of the object to be thawed is transferred to the second wall 108 on the one hand and a large amount of heat generated by liquefaction of the vaporized phase change medium 110 is transferred to the object to be thawed through the high heat conduction property of the housing 102, so as to complete the heat exchange process, and the phase change medium 110 is one of trichlorofluoromethane, water and ethanol, and has excellent phase change property and low material cost, so as to control the production cost of the whole device. Therefore, through the selection of the materials, the thawing device has excellent temperature conducting performance and low cost performance, the thawing process is further accelerated, and the cost is reduced.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a thawing apparatus, including: a housing 102 and a phase change medium 110. Wherein, the housing 102 has a chamber 104 therein, the chamber 104 includes a first wall 106 and a second wall 108 which are oppositely arranged, at least part of the first wall 106 is configured as a concave-convex structure 112; a phase change medium 110 is disposed within the chamber 104. When the thawing device works, the phase change medium 110 in the vapor state continuously releases heat to the second wall surface 108 to liquefy, and the part of heat can be used for thawing the object to be thawed; meanwhile, the liquid phase change medium 110 generated by liquefaction sinks in the chamber 104, the liquid phase change medium 110 drops on the first wall 106, the liquid phase change medium 110 absorbs heat from the first wall 106 to be vaporized into the vapor phase change medium 110, the vapor phase change medium 110 continuously rises in the chamber 104 and is liquefied again on the second wall 108, and the process is repeated to thaw the object to be thawed.

In this embodiment, further, the phase-change medium 110 in the static state exists in a vapor-liquid mixed state inside the cavity, and the liquid phase-change medium 110 may fill the concave region of the concave-convex structure 112 to ensure a contact area between the liquid phase-change medium 110 and the first wall surface 106.

In this embodiment, as shown in fig. 2 and 3, the first wall surface 106 is macroscopically a plane structure and is entirely in a relatively flat state, and the first wall surface 106 microscopically has the above-described concavo-convex structure 112. Specifically, the concavo-convex structure 112 at the microscopic level can be secured by designing the height difference L between the depressed region and the raised region in the concavo-convex structure 112 to be greater than 0mm and less than or equal to 10 mm.

In this embodiment, further, the concave-convex structure 112 is formed by the following methods, but not limited to: the concave-convex structure 112 may be formed by providing a protrusion on the first wall surface 106, the concave-convex structure 112 may be formed by providing a recess on the first wall surface 106, and the concave-convex structure 112 may be formed by providing both a protrusion and a recess on the first wall surface 106. The uneven structure 112 is distributed over the entire first wall surface 106.

In this embodiment, further, the phase change temperature of the selected phase change medium 110 is greater than or equal to 5 ℃. The liquid phase change medium 110 may not fill the entire chamber 104, but rather, the ratio of the volume of the liquid phase change medium 110 to the volume of the chamber 104 is ensured to be less than or equal to 3/5.

In this embodiment, further, as shown in fig. 2, the housing 102 further includes a heat sink end 114 and a heat sink end 116. The phase change medium 110 in a liquid state can absorb heat from the heat absorption end 114, thereby ensuring that vaporization occurs; the phase change medium 110 in the vapor state is liquefied when it comes into contact therewith, so that the process of converting the phase change medium 110 in the vapor state into the phase change medium 110 in the liquid state is completed. In addition, the housing 102 includes a working surface 118, and the working surface 118 is disposed at the heat emitting end 116, and the working surface 118 and the second wall 108 are located on the same side of the chamber 104 and can be used for placing the object to be thawed.

As shown in fig. 1 and 2, the second embodiment of the present invention provides a thawing apparatus, which can rapidly and effectively control the temperature of the object to be thawed and the working surface 118, so as to reduce the time for waiting for thawing the object to be thawed, and the usage is more convenient. Specifically, the housing 102 of the defrosting apparatus includes an upper heat emitting end 116, a lower heat absorbing section, and an intermediate chamber 104; the chamber 104 is filled with a phase change medium 110 and is a vapor-liquid phase change medium 110.

When the thawing device is kept still at ordinary times, the phase change medium 110 is in a vapor-liquid mixed state. When the unfreezing device is unfrozen, the object to be unfrozen is placed on the working surface 118 of the shell 102, the temperature of the heat release end 116 is reduced, the vapor phase change medium 110 is condensed into liquid on the second wall surface 108, and a large amount of heat energy is released; during the sinking process of the liquid phase change medium 110, the liquid phase change medium 110 contacts the first wall 106 to absorb heat, and is vaporized again, the density is reduced, and the vapor phase change medium 110 rises to contact the second wall 108 again; the heat of the heat release end 116 on the upper layer and the heat absorption section on the lower layer are fully exchanged by the reciprocating circulation, so that the whole unfreezing device absorbs the cold source of the object to be unfrozen, and the unfreezing effect is achieved.

In particular, as shown in fig. 2 and fig. 3, the first wall surface 106 has a concave-convex structure 112 in a microscopic view, and when the liquid phase-change medium 110 drops on the first wall surface 106, the concave-convex structure 112 can effectively increase the heat transfer area of the liquid drop on the first wall surface 106, so as to increase the heat absorbed by the liquid drop in unit time, which will greatly accelerate the vapor-liquid conversion of the phase-change medium 110 in the chamber 104, thereby achieving the effect of quick thawing.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A thawing apparatus, characterized by comprising:

a housing having a chamber therein, the chamber having opposing first and second walls;

the phase-change medium is arranged in the cavity, and can be in contact with the first wall surface to be vaporized and in contact with the second wall surface to be liquefied when the unfreezing device is in a working state;

wherein at least a portion of the first wall surface is configured as a concavo-convex structure.

2. Thawing apparatus according to claim 1,

the liquid phase-change medium covers at least part of the concave-convex structure and can be filled in a concave area of the concave-convex structure.

3. Thawing apparatus according to claim 1,

the height difference between the concave area and the convex area in the concave-convex structure is larger than 0mm and smaller than or equal to 10 mm.

4. Thawing apparatus according to claim 1,

the first wall surface is provided with a convex part to form the concave-convex structure; or

A concave part is arranged on the first wall surface to form the concave-convex structure; or

The first wall surface is provided with alternately distributed convex parts and concave parts so as to form the concave-convex structure.

5. The thawing apparatus according to any one of claims 1 to 4,

the concave-convex structure is distributed on the first wall surface.

6. The thawing apparatus according to any one of claims 1 to 4,

the phase change medium is a vapor-liquid phase change medium, and when the thawing device is in a non-working state, the vapor-liquid phase change medium exists in the cavity in a vapor-liquid mixed state, the vapor phase change medium is in contact with the second wall surface, and the liquid phase change medium is in contact with the first wall surface.

7. The thawing apparatus according to any one of claims 1 to 4,

the phase change temperature of the phase change medium is greater than or equal to 5 ℃ and less than or equal to 25 ℃.

8. The thawing apparatus according to any one of claims 1 to 4,

the ratio of the volume of the phase change medium in the liquid state to the volume of the chamber is less than or equal to 3/5.

9. The thawing apparatus of any of claims 1 to 4, wherein the housing further comprises:

the heat absorption end is arranged on one side of the chamber, and the first wall surface is formed at the heat absorption end;

a heat release end disposed at the other side of the chamber, the second wall surface being formed at the heat release end;

and the working surface is arranged at the heat release end.

10. The thawing apparatus according to any one of claims 1 to 4,

the shell is a heat-conducting plate, and the cavity is an interlayer in the heat-conducting plate; and/or

The phase change medium includes an organic phase change material and/or an inorganic phase change material.

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