Cold insulation device

Abstract

The present invention provides a cold insulation device comprising: an inner box for storing contents; the outer box body and the inner box body form a double-layer structure, and an interlayer space is formed between the inner box body and the outer box body; the at least one tubular component is arranged in the inner box body and is used for storing a cold insulation agent; and the constant pressure valve is arranged in the outer box body and is used for adjusting the pressure in the interlayer space. According to the cold insulation device provided by the invention, a continuous low-temperature, uniform and dry cold insulation environment is provided, so that the fibrosis degree of the transported powder material is reduced, and the caking risk is reduced.

Description

Technical Field

[0001] The invention relates to a cold-keeping device. Background Art

[0002] In the past, PTFE ultrafine powder with ultra-small particle size would become fibrous and easily agglomerated during storage and transportation due to increased ambient temperature, uneven temperature distribution, or vibration, resulting in reduced product performance and affecting the uniform dispersion of the powder during use.

[0003] In the cold preservation device of Patent Document 1, a propeller stirring method is used to keep the powder flowing, and a drying mechanism is set in the box to reduce the moisture content to prevent the powder from agglomerating during transportation. However, the use of a drying machine will cause the temperature inside the box to rise, increase the risk of PTFE ultrafine powder fibrillation, and cause serious agglomeration. On the other hand, PTFE ultrafine powder is fibrillated in large quantities under the external force of the propeller, resulting in serious agglomeration problems.

[0004] In the cold preservation device of Patent Document 2, a storage box containing dry ice as a cold preservation agent is placed in a box to reduce the temperature inside the box. However, since the dry ice is concentrated in the storage box, the temperature around the storage box is lower than the temperature of the rest of the box. Therefore, there is a problem that the PTFE ultrafine powder far from the storage box will cause agglomeration due to uneven temperature distribution. On the other hand, since there is air in the box, as the temperature inside the box decreases, the water vapor in the box condenses, resulting in the problem that the PTFE ultrafine powder contacts the water vapor and agglomerates.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Chinese Utility Model CN215923245U

[0008] Patent Document 2: Chinese Utility Model CN217496994U Summary of the invention

[0009] Technical problem to be solved by the invention

[0010] The present invention is completed based on the above problems. The present invention provides a cold preservation device, which aims to provide a continuous low-temperature, uniform and dry cold preservation environment, thereby reducing the fiberization degree of the transported powder material and reducing the risk of agglomeration.

[0011] Technical means for solving technical problems

[0012] The cold-keeping device of the present invention comprises: an inner box body for storing contents; an outer box body, which together with the inner box body forms a double-layer structure, and an interlayer space is formed between the inner box body and the outer box body; at least one tubular member, which is arranged in the inner box body and is used to store a cold-keeping agent; and a constant pressure valve, which is arranged in the outer box body and is used to adjust the pressure in the interlayer space.

[0013] In the cold-keeping device according to the present invention, the cold-keeping device is provided with a double-layer structure, and a tubular member for storing a cold-keeping agent is provided in the inner box, so that the contents can be kept cold. Therefore, the cold-keeping device can provide a continuous low-temperature and uniform cold-keeping environment, thereby reducing the degree of fiberization of the contents being transported and reducing the risk of agglomeration.

[0014] In addition, in the cold preservation device of the present invention, optionally, one end of the tubular member is open and the other end is closed, and the cold preservation agent is released into the interlayer space via the one end. Thus, the cold preservation agent is released into the interlayer space, thereby forming a heat exchange mitigation layer, and the air in the interlayer space is squeezed out to further form a dry environment. Therefore, the cold preservation device of the present invention can provide a continuous low-temperature, uniform and dry cold preservation environment, thereby further reducing the degree of fiberization of the transported powder material and reducing the risk of agglomeration.

[0015] In addition, in the cold-keeping device of the present invention, the inner box optionally includes an inner cover, an opening is formed in the inner cover at a position corresponding to the one end of the tubular member, and the other end of the tubular member is fixed to the inner wall of the inner box. Thus, the tubular member is easily fixed in the inner box.

[0016] In addition, in the cold-keeping device of the present invention, optionally, the outer box body includes an outer cover, and the outer cover seals the interlayer space, thereby further isolating the contents from contact with the external environment and being able to keep the contents cold.

[0017] In addition, the cold-keeping device of the present invention can be configured such that the tubular member is spirally or serpentinely configured. Thus, by configuring the tubular member storing the cold-keeping agent to be spirally or serpentinely configured, the contact area with the contents can be increased, thereby extending the cold-keeping time.

[0018] In addition, in the cold preservation device of the present invention, the constant pressure valve is optionally disposed at a position of the outer box body that is higher than the upper surface of the inner box body. Thus, by disposing the constant pressure valve at a position higher than the upper surface of the inner box body, it is easier to discharge the air in the interlayer space, so that the cold preservation agent better surrounds the inner box body, thereby making more efficient use of the cold preservation agent.

[0019] In addition, the cold preservation device of the present invention may optionally further include: a support member supported between the inner box and the outer box to allow gas to flow in the interlayer space, thereby fixing the inner box and the outer box and not hindering the released cold preservation agent from flowing in the interlayer space.

[0020] In addition, in the cold-keeping device of the present invention, the content may be a powder material having a particle size of 10 μm or less.

[0021] In addition, in the cold-keeping device of the present invention, the powder material is optionally PTFE ultrafine powder. Therefore, since the PTFE ultrafine powder with a smaller particle size is easily fibrosed by the increase of temperature, humidity and external force, the cold-keeping device of this embodiment is used to store or transport the PTFE ultrafine powder, which can provide a continuous low-temperature, uniform and dry cold-keeping environment, thereby reducing the degree of fibrosis of the transported powder material and reducing the risk of agglomeration.

[0022] In addition, in the cold preservation device of the present invention, the cold preservation agent is optionally dry ice, which is released into the interlayer space after sublimation. Therefore, since dry ice has the characteristics of low temperature and high volatility, it is easy to form a low temperature environment in the cold preservation device. And since the dry ice is released into the interlayer space after sublimation and squeezes out the air, a low temperature heat exchange mitigation layer and a dry environment are formed in the interlayer space.

[0023] Effects of the Invention

[0024] The cold preservation device according to the present invention can provide a continuous low-temperature, uniform and dry cold preservation environment, thereby reducing the fiberization degree of the transported powder material and reducing the risk of agglomeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become readily understood through the following detailed description in conjunction with the accompanying drawings, in which:

[0026] Figure 1 It is a perspective view schematically showing the cold-keeping device of the present invention.

[0027] Figure 2 It is a perspective view schematically showing the cold-keeping device of the present invention, with the inner cover and the outer cover omitted.

[0028] Figure 3 This is a perspective view schematically showing a cold-keeping device according to another embodiment of the present invention, with an inner cover and an outer cover omitted.

[0029] Figure 4 It is an explanatory diagram schematically showing the cold-keeping principle of the cold-keeping device of the present invention.

[0030] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present a slightly simplified representation of various features illustrating the basic principles of the invention. The specific design features of the present invention contained herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the specific designed application and use environment.

[0031] In the drawings, reference numbers refer to the same or equivalent parts throughout the several figures of the drawing.

[0032] Reference numerals

[0033] 1...Cold preservation device

[0034] 10...Inner box

[0035] 20...Outer box

[0036] 30...Interlayer space

[0037] 40...Support

[0038] 50... Constant pressure valve

[0039] 100... Tubular components

[0040] S...Contents

[0041] C……Coolant

[0042] 11...Inner cover

[0043] 21... Outer cover

[0044] 11h, 21h...handle

[0045] 10a, 20a...top surface

[0046] 10b, 20b... bottom

[0047] 10c, 20c... wall

[0048] 100a...top

[0049] 100b…Bottom

[0050] 110a...Opening

[0051] 110b……Position marker DETAILED DESCRIPTION

[0052] The present invention is described in more detail below with reference to the accompanying drawings and embodiments. First, the structure of the cold-keeping device 1 of the present invention is described. In the accompanying drawings, the diameter direction of the cold-keeping device extends along the XY plane, and the height direction of the cold-keeping device is the Z direction.

[0053] like Figure 1As shown, the cold preservation device 1 includes an inner box 10 and an outer box 20. In the inner box 10, a content S is stored. The content S is a powder material with a particle size of less than 10 μm, such as PTFE ultrafine powder. The inner box 10 includes an inner cover 11 for sealing the inner box 10. On the inner cover 11, a handle 11h for easy handholding can be provided. The outer box 20 includes an outer cover 21 for sealing the outer box 20. On the outer cover 21, a handle 21h for easy handholding can be provided. The inner box 10 and the outer box 20 together form a double-layer structure.

[0054] For the sake of convenience, the following uses Figure 2 ,by Figure 1 The cold-keeping device 1 of the present invention will be described using a perspective view of the cold-keeping device 1 in which the inner cover 11 and the outer cover 21 are omitted.

[0055] like Figure 2 As shown, the inner box body 10 and the outer box body 20 are double-layer cylindrical structures with different diameters. The inner box body 10 has a top surface 10a, a bottom surface 10b, and a wall surface 10c. The top surface 10a and the bottom surface 10b are opposite to each other in the Z direction and extend along the XY plane. The top surface 10a and the bottom surface 10b are, for example, circular shapes with equal diameters. The wall surface 10c connects the top surface 10a and the bottom surface 10b in the Z direction. In addition, since the inner box body 10 includes an inner cover 11, the top surface 10a of the inner box body 10 is equivalent to the top surface 10a of the inner cover 11.

[0056] The outer box body 20 has a top surface 20a, a bottom surface 20b, and a wall surface 20c. The top surface 20a and the bottom surface 20b are opposite to each other in the Z direction and extend along the XY plane. The top surface 20a and the bottom surface 20b are, for example, circular shapes with equal diameters. The wall surface 20c connects the top surface 20a and the bottom surface 20b in the Z direction. In addition, since the outer box body 20 includes the outer cover 21, the top surface 20a of the outer box body 20 is equivalent to the top surface 20a of the outer cover 21.

[0057] The diameter of the inner box 10 is smaller than the diameter of the outer box 20, that is, the diameters of the top surface 10a and the bottom surface 10b are smaller than the diameters of the top surface 20a and the bottom surface 20b. In the present invention, the inner box 10 and the outer box 20 are listed as double-layer cylindrical structures with different diameters, but are not limited thereto, and may also be double-layer elliptical cylindrical structures, double-layer rectangular parallelepiped structures, etc.

[0058] An interlayer space 30 is formed between the inner box 10 and the outer box 20. A support 40 is formed in the interlayer space 30. The support 40 is supported between the inner box 10 and the outer box 20, allowing gas to circulate in the interlayer space 30, and acts as a connecting bridge for fixing. The support 40 is at least supported between the wall 10c of the inner box 10 and the wall 20c of the outer box 20, or between the bottom 10b of the inner box 10 and the bottom 20b of the outer box 20, preferably supported on both at the same time. The shape of the support 40 can be zigzag, perforated sheet, corrugated paper, etc., as long as the gas is allowed to circulate in the interlayer space 30, it can be any shape. The support 40 can be composed of polymer materials, metal materials, etc., and is preferably composed of polymer materials from the aspects of cost and transportation efficiency.

[0059] In the inner box 10, a tubular member 100 is provided. One end of the tubular member close to the top surface 10a of the inner box 10, i.e., the top end 100a, is open, and the other end of the tubular member close to the bottom surface 10b of the inner box 10, i.e., the bottom end 100b, is closed. In the tubular member 100, a refrigerant C is stored. The refrigerant C is, for example, dry ice. When dry ice is used as the refrigerant C, since dry ice is volatile, the refrigerant C is released into the interlayer space 30 through the top end 100a after sublimation.

[0060] An opening 110a is formed in the inner cover 11 of the inner box body 10 at a position corresponding to the top end 100a of the tubular member. The top end 100a of the tubular member can be connected to the opening 110a by a fixing member. In this case, the top end 100a of the tubular member is formed at a position substantially the same as the top surface 10a of the inner cover 11. Alternatively, the diameter of the opening 110a is formed to be slightly larger than the top end 100a of the tubular member, and the top end 100a of the tubular member slightly exceeds the top surface 10a of the inner cover 11, and is fixed to the inner cover 11 in a manner of passing through the opening 110a. The refrigerant C is released from the top end 100a of the tubular member through the opening 110a to the interlayer space 30.

[0061] On the bottom surface 10b of the inner box 10, a position mark 110b is formed at a position corresponding to the bottom end 100b of the tubular member. When the tubular member 100 is placed in the inner box 10, the position mark 110b plays the role of positioning the tubular member. The bottom end 100b of the tubular member 100 can be connected to the position mark 110b by a fixing member. In this case, the bottom end 100b of the tubular member 100 abuts against the bottom surface 10b of the inner box 10. Alternatively, the position mark 110b can also be formed into a slightly concave shape, and the bottom end 100b of the tubular member 100 is fixed in a manner that is engaged with the position mark 110b. It should be understood that the position mark 110b is only used to indicate the fixed position of the closed end of the tubular member 100, and the position mark may not be set. In addition, the closed end of the tubular member 100 may also not be fixed to the inner box 10, but may be suspended in the internal space of the inner box 10.

[0062] For industrial convenience, the position mark 110b and the opening 110a may be arranged to correspond to each other in the Z direction, so as to appropriately fix the tubular member 100 in the inner box. Figure 3 As shown, the position mark 110b may be formed on the wall surface 10c of the inner box body 10 instead of the bottom surface 10b of the inner box body 10. In other words, the bottom end 100b of the tubular member may be fixed to the wall surface 10c of the inner box body 10 instead of the bottom surface 10b of the inner box body 10. That is, the bottom end 100b of the tubular member only needs to be fixed to the inner wall of the inner box body 10. In this case, the positions of the position mark 110b and the opening 110a do not necessarily correspond to each other in the Z direction.

[0063] The shape of the tubular member 100 can be spiral, winding, or coiled, etc., and is preferably spiral from the viewpoint of increasing the contact area with the contents S in the inner box 10. The tubular member 100 can be one or more, and is preferably multiple from the viewpoint of maintaining a continuous low temperature and uniform cold-keeping environment. The number of openings 110a and position marks 110b corresponds to the number of tubular members 100. The distribution position of the tubular member 100 in the inner box 10 is preferably uniformly distributed from the viewpoint of maintaining a low temperature and uniform cold-keeping environment. The number of tubular members 100 can be appropriately set according to conditions such as the desired cold-keeping time, the volume proportion of the contents S in the inner box 10, etc. For example, when multiple spiral tubular members 100 are uniformly arranged in the inner box 10, the cold-keeping device 1 can provide a continuous low temperature and uniform cold-keeping environment, thereby reducing the degree of fibrosis of the contents S being transported and reducing the risk of agglomeration.

[0064] The dry ice as the cooling agent C is released into the interlayer space 30 after sublimation. Since the outer cover 21 included in the outer box 20 seals the interlayer space 30, the pressure in the interlayer space 30 increases when the cooling agent C is released. Therefore, it is necessary to provide a constant pressure valve 50 for adjusting the pressure in the interlayer space 30 on the wall surface 20c of the outer box 20. Since the density of dry ice is greater than that of air, the dry ice released after sublimation is more likely to be deposited at the bottom of the interlayer space 30 than air, and then the air originally in the interlayer space 30 is squeezed upward from the bottom of the interlayer space 30 and discharged to the outside of the cold-keeping device 1 through the constant pressure valve 50. Therefore, from the viewpoint of more efficient use of the cooling agent C, the constant pressure valve 50 is provided at a position of the outer box 20 above the upper surface of the top surface 10a of the inner box 10. As a result, it is easier to discharge the air in the interlayer space 30, so that the cooling agent C better surrounds the inner box 10. In addition, the constant pressure valve 50 may also be provided on the top surface 20 a of the outer cover 21 .

[0065] Next, through Figure 4 , the cold preservation principle and effect of the cold preservation device 1 are explained.

[0066] First, by setting the cold preservation device 1 as a double-layer cylindrical structure, the content S is isolated from the external environment, and the content S can be kept cold. Secondly, by evenly arranging a plurality of spiral tubular members 100 storing the cold preservation agent C in the inner box 10, the cold preservation agent C is evenly dispersed among the content S, and a continuous low-temperature and uniform cold preservation environment can be provided, thereby reducing the degree of fibrosis of the content S being transported. In addition, as Figure 4 As shown by the arrow in , the refrigerant C released from the tubular member 100 fills the interlayer space 30, so that a heat exchange slowing layer (thermal conductivity: air 0.244w / mk; carbon dioxide 0.146w / mk) is formed between the inner box 10 and the outer box 20, thereby making the heat exchange slower, extending the cold preservation time of the cold preservation device 1, and further keeping the contents S cold. In addition, the released refrigerant C squeezes the air in the interlayer space 30 to the outside through the constant pressure valve 50, so that a dry environment is formed in the cold preservation device 1, avoiding the phenomenon of water vapor condensation caused by low temperature, and further reducing the risk of agglomeration of the contents S caused by water vapor condensation.

[0067] Through the above multiple structures and the synergistic effects between them, the cold preservation device 1 of the present invention can provide a continuous low-temperature, uniform and dry cold preservation environment, thereby reducing the fiberization degree of the transported powder material and reducing the risk of agglomeration.

[0068] Although the present invention is specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the present invention in any form. Those skilled in the art can deform and change the present invention as needed without departing from the essential spirit and scope of the present invention, and these deformations and changes all fall within the scope of the present invention.

Claims

1. A cold preservation device, characterized in that: Include: An inner box for storing contents; The outer box body forms a double-layer structure together with the inner box body, and an interlayer space is formed between the inner box body and the outer box body; at least one tubular member, disposed in the inner box, for storing a refrigerant; and A constant pressure valve is arranged in the outer box and is used to adjust the pressure in the interlayer space.

2. The cold preservation device according to claim 1, characterized in that: One end of the tubular member is open and the other end is closed. The cooling agent is released into the interlayer space through the one end.

3. The cold preservation device according to claim 2, characterized in that: The inner box body comprises an inner cover, An opening is formed at a position of the inner cover corresponding to the one end of the tubular member, The other end of the tubular member is fixed to the inner wall of the inner box.

4. The cold-keeping device according to any one of claims 1 to 3, characterized in that: The outer box body comprises an outer cover, The outer cover seals the interlayer space.

5. The cold-keeping device according to any one of claims 1 to 3, characterized in that: The tubular member is configured in a spiral or serpentine shape.

6. The cold-keeping device according to any one of claims 1 to 3, characterized in that: The constant pressure valve is provided at a position of the outer case above the upper surface of the inner case.

7. The cold-keeping device according to any one of claims 1 to 3, characterized in that: Also includes: The support member is supported between the inner box and the outer box, and allows gas to flow in the interlayer space.

8. The cold-keeping device according to any one of claims 1 to 3, characterized in that: The content is a powder material having a particle size of 10 μm or less.

9. The cold preservation device according to claim 8, characterized in that: The powder material is PTFE ultrafine powder.

10. The cold-keeping device according to any one of claims 1 to 3, characterized in that: The cooling agent is dry ice, which is released into the interlayer space after sublimation.

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