Heat exchange necklace

Abstract

The utility model discloses a heat exchange necklace which comprises a phase change energy storage inner core and an encapsulation layer, and the phase change energy storage inner core is encapsulated by the encapsulation layer to form the heat exchange necklace. The phase change energy storage inner core comprises a phase change energy storage material; the encapsulation layer comprises an outer encapsulation layer and an inner encapsulation layer; the heat exchange necklace comprises a heat exchange area and a non-heat-exchange area. In the heat exchange area, the phase change energy storage inner core exchanges heat outwards through the packaging outer layer and / or the packaging inner layer. In the non-heat-exchange area, at least one heat insulation layer is arranged between the packaging outer layer and the packaging inner layer to form an interlayer structure, and external heat exchange of the phase change energy storage inner core is reduced or prevented. According to the heat exchange necklace, the heat exchange area is arranged to make contact with the human body, efficient heat exchange can be achieved in the area making contact with the human body, lasting comfort is provided, and the heat exchange necklace has the long-time heat exchange maintaining capacity due to the fact that the heat insulation layer is arranged in the non-heat-exchange area.

Description

Technical Field

[0001] The utility model relates to the technical field of functional collars, in particular to a heat exchange collar. Background Art

[0002] Workers who work continuously under high temperatures often have to overcome various discomforts caused by high temperatures in order to continue working for a period of time. When wearing ordinary clothes to work under high temperature conditions, sweat and other water can migrate to the surface of the clothes through diffusion, transmission and other pathways, and evaporate outward to keep the inner layer of the clothes relatively dry and achieve the purpose of heat dissipation. However, the heat dissipation effect provided by sweat evaporation is limited, and the heat dissipation efficiency is limited. Especially when working continuously under high temperatures, ordinary clothes cannot effectively cool down within a certain period of time. In addition, the physiological functions of the human body will be abnormal in high temperature environments, such as body temperature regulation, water and salt metabolism, and blood circulation. Long-term high-temperature work will cause a large amount of sweat to be discharged from the body, and excessive loss will disrupt the body's fluid balance. In mild cases, it will affect attention and reduce production efficiency; in severe cases, it will cause heat stroke, and in more severe cases, it will cause sudden death, endangering the personal safety of workers and causing unnecessary economic losses.

[0003] Utility model CN201624862U discloses a utility model technology of a collar with heatstroke prevention and cooling effect. The utility model is mainly composed of a belt bag body 1, a filler 2, a connecting device 3, etc. The belt bag body 1 is made of cloth into a slender bag, and the bag contains a filler 2. The filler 2 is a highly absorbent material that absorbs water quickly and is non-toxic, odorless and colorless. Connecting devices 3, such as buckles or adhesive tapes, are provided at both ends of the belt bag body 1. When in use, the collar is placed in clean water, and the absorbent material in the belt bag body 1 quickly absorbs water, the collar will expand accordingly, and then the collar is worn around the neck. The collar takes away the heat from the human body surface by evaporation of water, but when the ambient temperature is high, the cooling effect of the collar is poor and the cooling duration is short, and it is impossible to replenish water with a lower temperature at any time.

[0004] Therefore, how to provide a heat exchange collar that can achieve efficient heat exchange in the area in contact with the human body, provide lasting comfort and have the ability to maintain heat exchange for a long time is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] In view of the defects existing in the above-mentioned prior art, the utility model provides a heat exchange collar which can achieve efficient heat exchange in the area in contact with the human body. The collar can not only provide lasting comfort, but also has the ability to maintain heat exchange efficiency for a long time.

[0006] In a first aspect, the utility model provides a heat exchange collar, comprising a phase change energy storage inner core and an encapsulation layer, wherein the encapsulation layer encapsulates the phase change energy storage inner core to form a heat exchange collar;

[0007] The phase change energy storage core includes a phase change energy storage material;

[0008] The encapsulation layer comprises an encapsulation outer layer and an encapsulation inner layer;

[0009] The heat exchange collar includes heat exchange area and non-heat exchange area:

[0010] In the heat exchange area, the phase change energy storage core exchanges heat with the outside through the encapsulated outer layer and / or the encapsulated inner layer;

[0011] In the non-heat exchange area, at least one heat insulation layer is provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0012] Furthermore, the heat exchange collar is an annular or U-shaped strip, and the outer diameter of the strip is 15-40 mm, preferably 28-40 mm.

[0013] Further, the heat exchange area extends along the inner arc line of the annular or U-shaped strip.

[0014] Furthermore, the width of the heat exchange area in a direction perpendicular to the inner arc line is preferably 5-20 mm.

[0015] The size of the heat exchange area of ​​the heat exchange collar is controlled by adjusting the width in the direction of the inner arc. The phase change energy storage material inside the collar directly contacts the human skin through the heat exchange area for heat exchange to meet the needs of different users.

[0016] Furthermore, the thickness of the outer encapsulation layer and the inner encapsulation layer are 0.05-1 mm respectively, including a single-layer film or a multi-layer composite film.

[0017] The material of the encapsulating layer is selected from at least one of TPU, PU, ​​PVC, PET, PP, PE and nylon, preferably TPU.

[0018] The TPU material itself has physical properties such as high strength, wear resistance and good pressure bearing capacity, which enables the heat exchange collar to withstand more physical friction and pressure during daily use, thereby improving the durability and service life of the product; the elasticity and comfortable touch of TPU can increase the wearing comfort and adapt to the neck circumference of different users, while maintaining sufficient tightness to ensure heat exchange effects such as cooling and warmth retention.

[0019] Furthermore, the thickness of the thermal insulation layer is 0.5-5 mm, and includes one or more of pearl cotton, EVA thermal insulation layer, polypropylene foam thermal insulation layer, aerogel thermal insulation layer, and glass fiber thermal insulation layer, and is preferably made of pearl cotton.

[0020] Pearl cotton itself has excellent thermal insulation properties. When it is set in a non-heat exchange area, it can delay the heat exchange between the phase change energy storage material and the outside air, greatly extending the use time of the collar. Secondly, pearl cotton has the advantage of low density. As an insulation layer, it will not significantly increase the total weight of the collar, thus maintaining the portability and wearing comfort of the collar.

[0021] The aerogel type thermal insulation layer includes a single component aerogel thermal insulation layer and an aerogel composite material thermal insulation layer.

[0022] Furthermore, the sandwich structure also includes at least one aluminum film reflective layer.

[0023] The present invention adopts aluminum film as a reflective layer. The aluminum film can effectively reflect thermal radiation and reduce the external heat transferred to the phase change energy storage material inside the collar by radiation. When used in conjunction with the thermal insulation layer, the reflective performance of the aluminum film is combined with the thermal insulation performance of the thermal insulation layer, which can significantly improve the overall thermal insulation effect and more effectively slow down the heat exchange. Secondly, the aluminum film itself is very light and thin. When added to the collar as a thermal insulation layer, it hardly increases the weight and volume of the collar, thereby maintaining the portability and wearing comfort of the collar.

[0024] Furthermore, the aluminum film reflective layer is located on the inner surface and / or outer surface of the heat insulation layer.

[0025] Furthermore, the sandwich structure includes a plurality of heat insulation layers and a plurality of aluminum film reflective layers that are alternately arranged.

[0026] Further, the phase change temperature of the phase change energy storage material is 0-100°C, and includes one or more of alkanes, fatty acids, esters, fatty alcohols, and water;

[0027] Preferably, the phase change energy storage material contains silicon dioxide aerogel in a proportion of 0-5wt%.

[0028] Silica aerogel has good thermal insulation properties. By adding a small amount of silica aerogel, the melting rate of the phase change material can be slowed down and the effective action time can be extended. Secondly, the high specific surface area and porous structure of silica aerogel enable it to form a more stable composite structure with the phase change energy storage material on a microscopic scale, reducing the material flow and leakage caused by volume change during the phase change process, especially for liquid-solid phase change energy storage materials, which helps to improve the mechanical strength and stability of the phase change energy storage material.

[0029] The present invention can flexibly select the composition of the phase change energy storage material to control its phase change temperature according to the need of heat preservation or cooling.

[0030] The heat exchange collar provided by the utility model has at least the following beneficial effects:

[0031] (1) The utility model provides a heat exchange area and a non-heat exchange area in the heat exchange collar. The heat exchange area is in direct contact with human skin. The heat exchange area is a single-layer or double-layer flexible membrane material, which ensures the comfort and heat exchange efficiency of the heat exchange area.

[0032] (2) The present invention provides a heat insulating layer and an optional aluminum film reflective layer in the sandwich structure of the non-heat exchange zone, thereby greatly extending the use time of the collar by delaying the heat exchange between the phase change energy storage material in the non-heat exchange zone and the outside air. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a heat exchange collar provided by the utility model;

[0034] Figure 2 A schematic cross-sectional view of the structure of Embodiment 1 provided by the utility model;

[0035] Figure 3 The utility model provides Figure 2 A schematic diagram of the structure enlargement of the A region in the middle;

[0036] Figure 4 A schematic cross-sectional view of the structure of Embodiment 2 provided by the utility model;

[0037] Figure 5 The utility model provides Figure 4 A schematic diagram of the structure of the middle B region;

[0038] Figure 6 The heat preservation time test data diagram of Example 1, Example 2, and Comparative Example 1 and Comparative Example 2;

[0039] Figure 7 This is a test data chart of the heat preservation time of Example 3, Example 4, Example 5 and Comparative Example 2.

[0040] Explanation of the reference numerals: 11 - encapsulating outer layer, 12 - encapsulating inner layer, 2 - heat insulation layer, 3 - aluminum film reflective layer, 4 - phase change energy storage core, S1 - heat exchange area, S2 - non-heat exchange area. DETAILED DESCRIPTION

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0043] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0044] A heat exchange collar, such as Figure 1 As shown, including:

[0045] (1) Phase change energy storage core 4: The phase change energy storage core 4 includes a phase change energy storage material, the phase change temperature of the phase change energy storage material is 0-100°C, and the phase change energy storage material includes one or more of alkanes, fatty acids, esters, fatty alcohols, and water; optionally, the phase change energy storage material contains silica aerogel in a proportion of 0-5%.

[0046] (2) Encapsulation layer: including an encapsulation inner layer 12, an encapsulation outer layer 11, a heat insulation layer 2 and an optional aluminum film reflective layer 3, wherein:

[0047] The thickness of the inner encapsulation layer 12 and the outer encapsulation layer 11 are 0.05-1 mm respectively, and include a single-layer film or a multi-layer composite film, and the material is selected from at least one of TPU, PU, ​​PVC, PET, PP, PE, and nylon;

[0048] The thickness of the heat insulation layer 2 is 0.5-5 mm, and includes one or more of pearl cotton, EVA heat insulation layer, polypropylene foam heat insulation layer, aerogel heat insulation layer, and glass fiber heat insulation layer;

[0049] The aluminum film reflective layer 3 is located on the inner surface and / or outer surface of the heat insulation layer 2 .

[0050] The above-mentioned encapsulation layer encapsulates the phase change energy storage core 4 to form a heat exchange collar, which is a ring or U-shaped strip, and the outer diameter of the strip is recorded as D. Figure 4 The D shown is 15-40mm, preferably 28-40mm, and the heat exchange collar is divided into:

[0051] (1) Heat exchange area S1:

[0052] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 5-20 mm;

[0053] (2) Non-heat exchange area S2:

[0054] In the non-heat exchange area, at least one heat insulation layer 2 is provided between the outer envelope layer 11 and the inner envelope layer 12 to form a sandwich structure, thereby reducing or preventing the phase change energy storage core 4 from exchanging heat with the outside;

[0055] The heat exchange collar of the utility model can be prepared by the following method, taking the heat exchange collar in a U-shaped strip as an example:

[0056] S1, stacking the outer layer, the U-shaped strip-shaped heat insulation layer, and the inner layer in sequence, and hot pressing them to obtain a semi-outer layer;

[0057] S2, repeat the above steps to obtain a half inner layer;

[0058] S3, stacking the half outer layer and the half inner layer, and hot pressing along the outer arc and the inner arc of the heat exchange collar, wherein the outer arc of the heat exchange collar overlaps with the outer edge of the heat insulation layer, and the inner arc of the heat exchange collar is preferably 2.5-10 mm away from the inner edge of the heat insulation layer, thereby providing a U-shaped strip-shaped heat exchange collar semi-finished product having a non-heat exchange area S2 with a width of 5-20 mm, and leaving an opening in the middle of the outer edge;

[0059] S4. Inject phase-change energy storage material from the opening and seal the opening to obtain a heat exchange collar, wherein the outer diameter D of the heat exchange collar is 15-40 mm, preferably 28-40 mm.

[0060] In the above method, the semi-outer layer and the semi-inner layer formed by steps S1 and S2 actually constitute the non-heat exchange area S1 together, and the insulation effect is provided by the insulation layer and other structures to reduce or prevent the phase change energy storage core from exchanging heat with the outside; and step S3 mainly forms the non-heat exchange area S2 by hot pressing.

[0061] Example 1

[0062] See also Figure 2 and Figure 3 The heat exchange collar of this embodiment includes:

[0063] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0064] (2) Encapsulation layer: including an inner encapsulation layer, an outer encapsulation layer and a heat insulation layer, wherein:

[0065] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0066] The thickness of the thermal insulation layer is 3mm, and pearl cotton is used;

[0067] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0068] (1) Heat exchange area:

[0069] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 10 mm;

[0070] (2) Non-heat exchange area:

[0071] In the non-heat exchange area, an insulating layer is provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0072] Example 2

[0073] See also Figure 4 and Figure 5 The heat exchange collar of this embodiment includes:

[0074] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0075] (2) Encapsulation layer: including an encapsulation inner layer, an encapsulation outer layer, a heat insulation layer and an aluminum film reflective layer, wherein:

[0076] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0077] The thickness of the thermal insulation layer is 3mm, and pearl cotton is used;

[0078] Aluminum film reflective layer, thickness 8μm;

[0079] The aluminum film reflective layer is located on the inner surface of the heat insulation layer, that is, between the heat insulation layer and the encapsulating inner layer;

[0080] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0081] (1) Heat exchange area:

[0082] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 10 mm;

[0083] (2) Non-heat exchange area:

[0084] In the non-heat exchange area, a heat insulating layer and a reflective layer are provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0085] Comparative Example 1

[0086] The heat exchange collar of this comparative example comprises:

[0087] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0088] (2) Encapsulation layer: including an inner encapsulation layer and an outer encapsulation layer, wherein:

[0089] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0090] The encapsulation layer encapsulates the phase-change energy storage core to form a heat exchange collar, which is a ring-shaped or U-shaped strip with an outer diameter of 30 mm.

[0091] Comparative Example 2

[0092] The heat exchange collar of this comparative example comprises:

[0093] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0094] (2) Encapsulation layer: including an encapsulation inner layer, an encapsulation outer layer, and an aluminum film reflective layer, wherein:

[0095] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0096] Aluminum film reflective layer, thickness 8μm;

[0097] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0098] (1) Heat exchange area:

[0099] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 10 mm;

[0100] (2) Non-heat exchange area:

[0101] In the non-heat exchange area, an aluminum film reflective layer is provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0102] Example 3

[0103] The heat exchange collar of this embodiment is different from that of embodiment 2 mainly in the thickness of the heat insulation layer, which specifically includes:

[0104] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0105] (2) Encapsulation layer: including an encapsulation inner layer, an encapsulation outer layer, a heat insulation layer and an aluminum film reflective layer, wherein:

[0106] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0107] The thickness of the thermal insulation layer is 1mm, and pearl cotton is used;

[0108] Aluminum film reflective layer, thickness 8μm;

[0109] The aluminum film reflective layer is located on the inner surface of the thermal insulation layer;

[0110] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0111] (1) Heat exchange area:

[0112] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 10 mm;

[0113] (2) Non-heat exchange area:

[0114] In the non-heat exchange area, a heat insulating layer and a reflective layer are provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0115] Example 4

[0116] The heat exchange collar of this embodiment is different from that of embodiment 2 mainly in the thickness of the heat insulation layer, which specifically includes:

[0117] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0118] (2) Encapsulation layer: including an encapsulation inner layer, an encapsulation outer layer, a heat insulation layer and an aluminum film reflective layer, wherein:

[0119] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0120] The thickness of the thermal insulation layer is 1.5mm, and pearl cotton is used;

[0121] Aluminum film reflective layer, thickness 8μm;

[0122] The aluminum film reflective layer is located on the inner surface of the thermal insulation layer;

[0123] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0124] (1) Heat exchange area:

[0125] The heat exchange area extends along the inner arc line of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc line is 10 mm;

[0126] (2) Non-heat exchange area:

[0127] In the non-heat exchange area, a heat insulating layer and a reflective layer are provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0128] Example 5

[0129] The heat exchange collar of this embodiment is different from that of embodiment 2 mainly in the thickness of the heat insulation layer, which specifically includes:

[0130] (1) Phase change energy storage core: The phase change energy storage core includes a phase change energy storage material. The phase change temperature of the phase change energy storage material is 28°C, and n-octadecane is selected. The phase change energy storage material contains silica aerogel, which accounts for 0.5%.

[0131] (2) Encapsulation layer: including an encapsulation inner layer, an encapsulation outer layer, a heat insulation layer and an aluminum film reflective layer, wherein:

[0132] The thickness of the inner and outer layers of the package is 0.3mm, which is a single-layer film, and the material is TPU;

[0133] The thickness of the thermal insulation layer is 2mm, and pearl cotton is used;

[0134] Aluminum film reflective layer, thickness 8μm;

[0135] The aluminum film reflective layer is located on the inner surface of the thermal insulation layer;

[0136] The above-mentioned encapsulation layer encapsulates the phase change energy storage core to form a heat exchange collar. The heat exchange collar is a ring or U-shaped strip with an outer diameter of 30 mm. The heat exchange collar is divided into:

[0137] (1) Heat exchange area:

[0138] The heat exchange area extends along the inner arc of the annular or U-shaped strip, and the width of the heat exchange area in the direction perpendicular to the inner arc is 10 mm;

[0139] (2) Non-heat exchange area:

[0140] In the non-heat exchange area, a heat insulating layer and a reflective layer are provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

[0141] The structures and compositions of Examples 1-5 and Comparative Examples 1-2 are shown in Table 1:

[0142] Table 1

[0143]

[0144] Test Method

[0145] First, the temperature probes were inserted into different parts of the collar, and then Examples 1-5 and Comparative Examples 1-2 with the temperature probes inserted were simultaneously placed in an oven at a constant temperature of 40° C., and the temperature changes of the collars were recorded using a multi-channel temperature recorder.

[0146] The average temperature of the collar at a certain time point at 40°C is obtained by calculating the average temperature of different parts of the collar at the same time point. Figure 6 , Figure 7 ;

[0147] Figure 6 The test results of the embodiments and comparative examples with different film layers in the sandwich structure at 40°C are shown in the figure. It can be seen from the figure that at an ambient temperature of 40°C, the thermal insulation time of embodiment 2 with an aluminum film reflective layer and a heat insulation layer is the best, and embodiment 1 with only a heat insulation layer is second. The thermal insulation time of comparative example 2 of the heat exchange collar with only an aluminum film reflective layer is shorter than that of comparative example 1 without a heat insulation layer and a reflective layer, which is significantly different from embodiment 1 and embodiment 2. It is obvious that the thermal insulation effect and thermal insulation time of the heat exchange collar with a heat insulation layer, especially the combination structure of an aluminum film reflective layer and a heat insulation layer, are significantly improved compared with other groups.

[0148] Figure 7It is the comparative test result of the embodiments with different insulation layer thicknesses in the sandwich structure at 40°C. It can be seen from the figure that at an ambient temperature of 40°C, the insulation effect and insulation time of the heat exchange collar increase with the increase of the thickness of the insulation layer. In actual use, the size of the heat exchange collar, the capacity of the phase change energy storage material, and the thickness and quantity of the insulation layer and the aluminum film reflective layer can be designed according to the heat exchange requirements and the use environment.

[0149] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the present invention is intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention.

Claims

1. A heat exchange collar, characterized in that: It comprises a phase-change energy storage inner core and an encapsulation layer, wherein the encapsulation layer encapsulates the phase-change energy storage inner core to form a heat exchange collar; The phase change energy storage inner core (4) comprises a phase change energy storage material; The encapsulation layer comprises an encapsulation outer layer (11) and an encapsulation inner layer (12); The heat exchange collar includes the heat exchange area (S1) and the non-heat exchange area (S2): In the heat exchange area (S1), the phase change energy storage core exchanges heat with the outside through the encapsulated outer layer and / or the encapsulated inner layer; In the non-heat exchange region (S2), at least one heat insulation layer (2) is provided between the outer envelope layer and the inner envelope layer to form a sandwich structure, thereby reducing or preventing the phase change energy storage core from exchanging heat with the outside.

2. The heat exchange collar according to claim 1, characterized in that: The heat exchange collar is a ring-shaped or U-shaped strip, and the outer diameter of the strip is 15-40mm.

3. The heat exchange collar according to claim 2, characterized in that: The heat exchange area extends along the inner arc of the annular or U-shaped strip.

4. The heat exchange collar according to claim 3, characterized in that: The width of the heat exchange area (S1) in the direction perpendicular to the inner arc line is 5-20 mm.

5. The heat exchange collar according to any one of claims 1 to 4, characterized in that: The thickness of the outer encapsulation layer (11) and the inner encapsulation layer (12) are respectively 0.05-1 mm, and include a single-layer film or a multi-layer composite film.

6. The heat exchange collar according to any one of claims 1 to 4, characterized in that: The thickness of the thermal insulation layer (2) is 0.5-5 mm, and includes one or more of pearl cotton, EVA thermal insulation layer, polypropylene foam thermal insulation layer, aerogel thermal insulation layer, and glass fiber thermal insulation layer.

7. The heat exchange collar according to any one of claims 1 to 4, characterized in that: The sandwich structure also includes at least one aluminum film reflective layer (3).

8. The heat exchange collar according to claim 7, characterized in that: The aluminum film reflective layer (3) is located on the inner surface and / or outer surface of the heat insulation layer (2).

9. The heat exchange collar according to claim 7, characterized in that: The sandwich structure includes a plurality of heat insulation layers and a plurality of aluminum film reflective layers which are alternately arranged.

10. The heat exchange collar according to any one of claims 1 to 4, characterized in that: The phase change temperature of the phase change energy storage material is 0-100°C, and includes one or more of alkanes, fatty acids, esters, fatty alcohols, and water.

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