Micro-Porous Laminated High-Speed Evaporative Cooling Garment

Abstract

Provided is a microporous laminated high-speed evaporative cooling garment with a significantly enhanced cooling effect. 【Solution means】The microporous laminated high-speed evaporative cooling garment includes an inner layer 10, a water absorption layer 20, a high-speed evaporation moisture-permeable layer 30, and welding layers 41 and 42 provided in sequence from the inside to the outside. The welding layers are provided on the outer edge and the inner partial region of the high-speed evaporation moisture-permeable layer. By welding the welding layers to the inner layer, an accommodation space is formed between the inner layer and the high-speed evaporation moisture-permeable layer. The water absorption layer is provided within the accommodation space. The high-speed evaporation moisture-permeable layer is further provided with a water injection port communicating with the accommodation space. The material of the high-speed evaporation moisture-permeable layer is a coating fabric or an adhesive-impregnated fabric having a microporous structure. The high-speed evaporation moisture-permeable layer employs a breathable moisture-impermeable fabric with micropores. The cooling effect of this cooling garment is 3 to 5 times better than that of the traditional structure, significantly enhancing the cooling effect.

Description

[Technical field]

[0001] The present invention relates to a refrigeration suit, and more particularly to a microporous laminated rapid evaporation refrigeration suit. [Background technology]

[0002] With the significant rise in global temperatures, the summer temperature has also become hotter, bringing inconvenience to people's work and life, especially for construction workers, cleaning workers, traffic police and other outdoor workers. Without good heat protection measures, it is easy to affect employees' health and work efficiency. In order to solve the above problems, cooling clothes with various structures have appeared on the market at present. Water evaporation is a natural phenomenon. In the process of water evaporating into steam, heat is absorbed and the temperature is reduced, and the evaporation of water can be used to reduce the temperature and create wearable products to cool the human body. It was first proposed by a British patent, and there are many domestic patents for making clothes that reduce the temperature by evaporating water. For example, Chinese patent CN204232340 includes an outer layer, a middle water-absorbing layer and an inner waterproof layer, and the moisture in the middle water-absorbing layer evaporates slowly under high temperatures to absorb heat and cool the human body, which is a temperature-reducing clothing with good heat dissipation effect and good comfort. This kind of outer layer is moisture permeable, so the use experience is poor. Therefore, at present, some cooling clothes adopt a breathable and water-impermeable polymer film for the outer layer. Furthermore, the inner layer and the moisture-impermeable outer layer are welded together, and the temperature is lowered by allowing the moisture to permeate through the outer film.

[0003] However, this kind of outer layer film is usually cooled by the principle of hydrophilic moisture absorption using hydrophilic groups, where water vapor is transferred from the higher concentration or pressure to the other, and then evaporated and dried. The prerequisite is a concentration difference or pressure difference. Since the film itself has no holes, moisture permeability is mainly achieved by its water properties, and the moisture permeability function is achieved by transferring steam from the high pressure place to the low pressure place due to the difference in vapor pressure inside and outside the clothing, but in actual use, the effect of lowering the temperature is not good. According to the test standard ASTME96-BW, the moisture permeability of plastic is 4000g / m 2It does not exceed / 24h. According to research, under one standard atmosphere, the environmental temperature in summer is 30°C, the evaporation rate of water is 4000g / square meter / 24 hours, and the latent heat of vaporization of water is about 2428kJ / kg at 30°C. When converting the evaporation rate of 4000g / square meter / 24 hours to the mass flow rate per second, E = 4kg / m 2 / day÷24×3600s / day ≈ 0.0000463kg / m 2 / s, the evaporation heat release power: Qevap = L×E = 2428000J / kg×0.0000463kg / m 2 / s ≈ 112.4W / m 2 , assuming the convective heat transfer coefficient: h = 25W / (m^2·°C), the heat balance equation: Qevap = h×(Ta - Ts)Qevap = h×(Ta - Ts), solving the equation to lower the temperature: Ta - Ts = Qevap / h = 112.4÷25 ≈ 4.5°C. Theoretically, the temperature can only be lowered by 4.5°C, but actually, the temperature can only be lowered by 2 to 3°C, and the actual effect of lowering the temperature cannot be obtained.

Summary of the Invention

[0004] Therefore, the purpose of the present invention is to provide a microporous laminated high-speed evaporation refrigeration clothing to solve the problems in the background technology.

[0005] To achieve the above object, the present invention mainly adopts the following technical solutions.

[0006] The microporous laminated high-speed evaporation refrigeration clothing includes an inner layer, a water absorption layer, a high-speed evaporation and moisture-permeable layer, and a welding layer provided in order from the inside to the outside. The welding layer is provided on the outer edge and the inner partial area of the high-speed evaporation and moisture-permeable layer. By welding the welding layer to the inner layer, a storage space is formed between the inner layer and the high-speed evaporation and moisture-permeable layer. The water absorption layer is provided in the storage space. The high-speed evaporation and moisture-permeable layer is further provided with a water injection port communicating with the storage space. The material of the high-speed evaporation and moisture-permeable layer is a coating fabric or an adhesive-impregnated fabric having a microporous structure.

[0007] Furthermore, at the positions of the welding layer corresponding to the outer edge and the inside of the high-velocity evaporation and moisture-permeable layer, a set of via holes is provided, and the bottom surface of the welding layer passes through the set of via holes and is welded to the inner layer.

[0008] Furthermore, two or more rows of the set of via holes are provided, and the via holes in the inner and outer rows are provided with a displacement.

[0009] Furthermore, the welding layer includes a first welding layer and a second welding layer. The second welding layer is provided at the outer edge of the high-velocity evaporation and moisture-permeable layer, and the first welding layer is provided in the inner partial area of the high-velocity evaporation and moisture-permeable layer.

[0010] Furthermore, the water absorption layer is provided with through holes. At the positions of the through holes corresponding to the high-velocity evaporation and moisture-permeable layer, a set of via holes is provided. The bottom surface of the first welding layer passes through the set of via holes and the through holes and is connected to the corresponding inner layer.

[0011] Furthermore, a plurality of embossing holes penetrating from the inside to the outside are further provided, and the embossing holes are provided in the first welding layer.

[0012] Furthermore, the coating material on the high-velocity evaporation and moisture-permeable layer is PTFE or TPU.

[0013] Furthermore, the welding layer is provided with a welding area and a non-welding area. A process line is provided between the welding area and the non-welding area, and the welding area is provided to correspond to the set of via holes.

[0014] Furthermore, the process line consists of a plurality of spaced through holes, and the non-welding area is torn along the process line.

[0015] Furthermore, a sealing fastener is provided at the water injection port.

[0016] From the above, the present invention installs an ice silk inner layer with good heat conduction effect, a middle water absorption layer with good water absorption, and an evaporation high-speed moisture-permeable layer with good air permeability. The evaporation high-speed moisture-permeable layer adopts a coated fabric or an adhesive-impregnated fabric with a microporous structure, so that while the fabric retains waterproofness, it can achieve high-speed moisture permeability and directly discharge water vapor to the outside through the micropores of the film. By welding the small-area welding layer and the inner layer, the evaporation high-speed moisture-permeable layer is directly exposed to the air. At the same time that the moisture in the water absorption layer evaporates rapidly as water vapor from the evaporation high-speed moisture-permeable layer, it absorbs a large amount of heat, thereby reducing the temperature to the greatest extent, and conducting the cold source to the skin through the ice silk of the inner layer to achieve a good cooling effect on the human body. The present invention has strong practicality and strong popularization significance.

Brief Description of the Drawings

[0017]

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Embodiments for Carrying Out the Invention

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in more detail below with reference to the drawings and embodiments.

[0019] As shown in FIGS. 1 to 6, it is a microporous laminated high-speed evaporation refrigeration clothing provided by the present invention. In this embodiment, the microporous laminated high-speed evaporation refrigeration clothing is of the vest type. As shown in FIGS. 8 and 9, it may also be of the short-sleeved type, long-sleeved type, or other wearing types, and the specific style is not limited here.

[0020] The microporous laminated high-speed evaporation refrigeration clothing includes a back region and two front regions. In this embodiment, the two front regions and the back region are connected by a cloth layer 80. Refrigeration regions are provided in both the front region and the back region. The refrigeration region includes an inner layer 10, a water absorption layer 20, a high-speed evaporation moisture-permeable layer 30, and a welding layer 40 provided in order from the inside to the outside. The water absorption layer 20 is provided between the inner layer 10 and the high-speed evaporation moisture-permeable layer 30. The welding layer 40 is provided outside the high-speed evaporation moisture-permeable layer 30, and the welding layer 40 and the inner layer 10 are welded to form a sealed accommodation space between the inner layer 10 and the high-speed evaporation moisture-permeable layer 30. Further, a plurality of transparent holes 60 penetrating from the inside to the outside are further provided in the refrigeration region, and the edges of the transparent holes 60 are welded to the inner layer 10 and the welding layer 40 for sealing. With this design of the transparent holes 60, the inside and outside of the clothing can be permeated.

[0021] In this embodiment, the inner layer 10 is a composite cloth including an inner cloth layer 11 and an outer moisture-impermeable film 12, and the moisture-impermeable film 12 is laminated to the cloth layer 11. More specifically, the cloth layer 11 is ice silk cloth, and the moisture-impermeable film 12 is a TPU waterproof film. Among them, the ice silk cloth has good thermal conductivity and can rapidly adsorb the heat of the body. However, the TPU waterproof film blocks moisture from contacting the skin, fuses with the welding layer 40, and can seal moisture in a certain area. It should be noted that the cloth layer 11 and the moisture-impermeable film 12 are not limited to the above-mentioned ice silk cloth and TPU waterproof film, and other materials with the same effect may also be used.

[0022] The material of the water-absorbing layer 20 is a water-absorbing material. In this embodiment, the water-absorbing layer 20 is SAF super absorbent cotton or PVA water-absorbing cloth, which can absorb dozens of times its own weight of moisture, confine the moisture by the supporting force after the fusion of the welding layer 40 and the inner layer 10, and evenly distribute the moisture to each part of the clothing. In other embodiments, it can be understood that the water-absorbing layer 20 is not limited to the examples of this embodiment and may be other water-absorbing materials. In this embodiment, the water-absorbing layer 20 is provided with a through hole 21 at a position corresponding to the watermark hole 60.

[0023] The evaporation high moisture permeability layer 30 is a fabric that allows water vapor to pass through while blocking liquid water. This is a coated fabric or an adhesive-impregnated fabric having a microporous structure. While maintaining the waterproofness of the fabric, it can have high moisture permeability and directly discharge water vapor to the outside through the thin film micropores. The coated fabric is a polyester fabric, a nylon fabric, or other fabrics, and the coating is PTFE or TPU with a thickness of 0.005 mm to 0.03 mm.

[0024] In this embodiment, the pore diameter of the micropores of the coated fabric used can reach between 100 and 500 nanometers under the control of the draw ratio, and a porosity of 85% or more can be achieved. The diameter of water vapor molecules is 0.0004 micrometers, but the diameter of light mist with a small diameter in rainwater is 20 micrometers, and the diameter of drizzle has already reached 400 micrometers. The size of the micropores is only 1 / 10,000 of the smallest water droplet, but it is about 700 times larger than the volume of a single water molecule. Therefore, the microporous membrane can discharge water vapor directly to the outside through the thin film micropores while being waterproof. Also, in this embodiment, a coated fabric or an adhesive-impregnated fabric having a microporous structure is used to maximize the moisture permeability performance of the fabric. The theoretical moisture permeability rate of the microporous structure coated fabric is 12000 g / m 2It can reach within 24 hours. The theoretical calculation is as follows. Under one standard atmospheric pressure, the environmental temperature in summer is set at 30 °C, the evaporation rate of water is 12000 g / square meter / 24 hours, and the latent heat of vaporization of water is about 2428 kJ / kg at 30 °C. Converting the evaporation rate of 12000 g / square meter / 24 hours to the mass flow rate per second, E = 12 kg / m 2 / day÷24×3600 s / day ≈ 0.0001389 kg / m 2 / s, the evaporation heat release power: Qevap = L×E = 2428000 J / kg×0.0001389 kg / m 2 / s ≈ 337.2 W / m 2 , assuming the convective heat transfer coefficient: h = 25 W / (m^2·°C), the heat balance equation: Qevap = h×(Ta - Ts), solving the equation to lower the temperature: Ta - Ts = Qevap / h = 337.2 / 25 ≈ 13.5 °C. From this, theoretically, it can lower the temperature by 13.5 °C, and the measured temperature drop is also more than 8 °C, indicating that it is far superior to the temperature-lowering effect of traditional cooling clothes.

[0025] The evaporation high-speed moisture-permeable layer 30 is provided with a set of through-holes 32 including a plurality of through-holes at positions corresponding to the through-holes 21 of the water-absorbing layer 20. In this embodiment, two or more sets of through-hole groups are provided, and the inner and outer through-holes 32 are provided with a displacement. Also, along the edge of the evaporation high-speed moisture-permeable layer 30, a set of through-hole groups distributed along the edge is provided. In this embodiment, they are arranged in two or more rows inside and outside the through-hole group, and the inner and outer through-holes 32 are installed with a displacement.

[0026] The evaporation high-speed moisture-permeable layer 30 is further provided with a water injection port 33 provided with a sealable sealing strip or fastener, etc. In this embodiment, three water injection ports 33 are provided, which are located in the back region and two front body regions respectively.

[0027] The welding layer 40 is a thermoplastic material having good weldability and weldable with the inner layer 10. In this embodiment, the material of the welding layer 40 is a TPU film or a TPU composite fabric, and it can be understood that the welding layer 40 may also be other film materials with the same effect. The welding layer 40 includes a first welding layer 41 and a second welding layer 42. In this embodiment, the first welding layer 41 is provided in a circular shape, the second welding layer 42 is provided in a rib shape, the first welding layer 41 is provided at the corresponding position of the watermark hole 60, and the second welding layer 42 is provided at the outer edge position. Also, in other embodiments, when it is not necessary to open the watermark hole 60, the first welding layer 41 is a circular or other non-circular structure for welding with the inner layer to avoid displacement of the water absorption layer 20 and position the water absorption layer 20.

[0028] The inner layer 10, the water absorption layer 20, the evaporation high-speed moisture-permeable layer 30, and the welding layer 40 are laminated in order from bottom to top and accurately positioned. The bottom surface of the first welding layer 41 is welded and fused with the inner layer 10 through the via 32 of the evaporation high-speed moisture-permeable layer 30, the bottom surface of the second welding layer 42 is welded and fused with the inner layer 10 through the via 32 on the side of the evaporation high-speed moisture-permeable layer 30, and the second welding layer 42 is welded and fused with the inner layer 10 extending outside the evaporation high-speed moisture-permeable layer 30 to form a closed region. The second welding layer outside the closed region can be connected to other cloth layers. In this embodiment, the welding layer 40 is provided only at the connection location with the inner layer 10 so that the evaporation high-speed moisture-permeable layer 30 is exposed to the air and high-speed water evaporation is maximized, thereby obtaining an optimal cooling effect.

[0029] As shown in Fig. 7, the sides of the back region and the front body region can also be snap - connected by a connecting buckle 70, which is a conventional adjustable snap tape. This connecting buckle 70 includes a mouth end and an insertion end, with the insertion ends provided on the sides of the back region and the front body region respectively being fitted into the mouth end. The user can connect the back and the front through the connecting buckle, adjust the looseness, and it has a wide application range. In addition, in the micro - pore laminated high - speed evaporation refrigeration clothing, a corresponding fan (not shown) is provided between the skin and the inner layer 10 to blow away the sweat on the skin. Further, this fan is provided on the back of the refrigeration clothing, and more preferably, two fans are respectively provided in the lower - side regions on both sides of the back.

[0030] The manufacturing method of the micro - pore laminated high - speed evaporation refrigeration clothing of the present invention specifically includes the following steps.

[0031] Step 1 Cutting: Cut the inner layer 10, the water - absorbing layer 20, the high - speed evaporation moisture - permeable layer 30, and the full - sheet welding layer 40a. Make through - holes 21 in the water - absorbing layer 20, make pore groups 32 in the high - speed evaporation moisture - permeable layer 30, provide a welding region 41a and a non - welding region 42a in the welding layer 40a, and separate the space between the welding region 41a and the non - welding region 42a by a process line 43a. Here, the welding region 41a is installed corresponding to the pore groups 32 and has a slightly larger width dimension than the region of the pore groups 32. In this embodiment, the process line forms a line that is easy to tear from a plurality of spaced holes, and after welding is completed, the extra welding layer can be easily removed by this process line.

[0032] Step 2 Laminating: Laminate the inner layer 10, the water - absorbing layer 20, the high - speed evaporation moisture - permeable layer 30, and the welding layer 40 in order from bottom to top and accurately position them on the mold.

[0033] Step 3 Welding: Weld the laminated cloth layers using welding equipment, and fuse - connect the welding layer 40a to the inner layer 10 through the pore groups 32. In this embodiment, the welding device may be a high - frequency welder. It is understood that in other embodiments, conventional devices such as ultrasonic welders and hot - press welders may also be used.

[0034] Step 4: Remove the non-welded area 42a, remove the welding layer 40a of the non-welded area 42a along the process line 43a, and expose the evaporation high moisture permeability layer 30.

[0035] Step 5: Punch the watermark hole 60, and punch the watermark hole 60 at the position corresponding to the watermark hole 60 after welding. In this embodiment, in order to facilitate processing and reduce processing costs, the watermark hole 60 is processed after welding. It should be understood that in other embodiments, it is also possible to punch holes in all layers corresponding to the position of the watermark hole 60 and then perform alignment welding.

[0036] Step 6 Post-process: According to the design needs, hem the clothes or connect each part to form a complete piece of clothing.

[0037] From the above, the present invention provides an ice silk inner layer with good heat conduction effect, a middle water absorption layer with good water absorption, and an evaporation high moisture permeability layer 30 with good air permeability. The evaporation high moisture permeability layer 30 forms a storage space for the water absorption layer 20 between the evaporation high moisture permeability layer 30 and the inner layer 10 by welding the small area welding layer 40 and the inner layer 10. The moisture of the water absorption layer 20 changes from water to water vapor and evaporates rapidly through the evaporation high moisture permeability layer 30, while absorbing a large amount of heat, thereby reducing the temperature to the maximum extent, and conducting the cold source to the skin through the inner layer of ice silk, achieving a good cooling effect on the human body. The evaporation high moisture permeability layer 30 of the present invention adopts a breathable and moisture-impermeable fabric with micropores, and the cooling effect of this refrigerated clothing is 3 to 5 times better than that of the traditional structure, significantly enhancing the cooling effect. The present invention has strong practicality and strong popularization significance.

[0038] The above are only some preferred embodiments of the present invention, and there is no need to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A microporous laminated high-speed evaporative refrigeration suit, The insulating layer includes an inner layer, a water absorption layer, a high-speed evaporation moisture permeable layer, and a welding layer, which are provided in this order from the inside to the outside, The welding layer is provided on the outer edge and the inner partial region of the evaporation high-speed moisture permeable layer, The welded layer is welded to the inner layer to form a storage space between the inner layer and the evaporation high-speed moisture permeable layer; The water absorption layer is provided in the storage space, The evaporation high-speed moisture permeable layer is further provided with a water inlet communicating with the storage space, The material of the evaporation high-speed moisture permeable layer is a coated fabric or an adhesive-soaked fabric having a microporous structure.

2. The microporous laminated rapid evaporation refrigeration suit according to claim 1, characterized in that a through-hole set is provided at the position of the welding layer corresponding to the outer edge and the inside of the evaporation rapid moisture permeable layer, and the bottom surface of the welding layer is welded to the inner layer through the through-hole set.

3. 3. The micro-porous laminated rapid evaporative refrigeration garment according to claim 2, wherein the perforation groups are provided in two or more rows, and the perforations in the inner and outer rows are offset from each other.

4. 2. The microporous laminated rapid evaporation refrigeration suit according to claim 1, wherein the welding layer includes a first welding layer and a second welding layer, the second welding layer being provided on an outer edge of the evaporation rapid moisture permeable layer, and the first welding layer being provided on an inner partial region of the evaporation rapid moisture permeable layer.

5. The microporous laminated rapid evaporation refrigeration suit according to claim 4, characterized in that the water absorption layer is provided with a through hole, a through hole group is provided at the through hole position corresponding to the evaporation rapid moisture permeable layer, and the bottom surface of the first welding layer is connected to the corresponding inner layer through the through hole group and the through hole.

6. A plurality of perforations are further provided penetrating from the inside to the outside, The microporous laminated rapid evaporative refrigeration garment according to claim 5, wherein the perforations are provided in the first welding layer.

7. The microporous laminated rapid evaporation refrigeration suit according to claim 1, characterized in that the coating material on the evaporation rapid moisture permeable layer is PTFE or TPU.

8. The micro-porous laminated rapid evaporative refrigeration suit according to claim 1, wherein the welding layer has a welding area and a non-welding area, a process line is provided between the welding area and the non-welding area, and the welding area is provided to correspond to a through-hole group.

9. 8. The microporous laminated rapid evaporative refrigeration garment of claim 7, wherein the process lines are comprised of a plurality of spaced through holes, and the non-welded areas are torn along the process lines.

10. The microporous laminated rapid evaporation refrigeration suit according to claim 1, wherein the water inlet is provided with a sealing fastener.

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