Personal cooling garment and cooling apparatus

Abstract

A personal cooling packaging material comprising: a garment body; the air cooling system is arranged on the outer surface of the garment body, and the air cooling system further comprises a containing part and a cooling agent contained in the containing part; the air circulation system is arranged on the inner surface of the clothes body and used for extracting original air from the inner space in the clothes body for cooling. The air circulation system is separated from the air cooling system to avoid direct contact of the raw air with a coolant of the air cooling system. The air cooling system is in thermal communication with the air circulation system.

Description

Technical Field

[0001] The present disclosure relates generally to personal cooling garments and cooling devices. In particular, the present disclosure relates to a personal cooling garment for lowering the body temperature of a wearer and reducing the risk of heat stroke during outdoor activities while overcoming the discomfort associated with the feeling of wetness. Background Art

[0002] Workers in occupations that involve high-intensity physical activity are exposed to heat stress, especially in hot environments. Direct exposure to sunlight during outdoor activities in the summer is particularly detrimental to outdoor workers. When the body's ability to dissipate heat is not able to balance the heat generated during work, heat builds up, increasing the incidence of heat exhaustion. Heat dissipation can be enhanced by evaporation, conduction, convection, and radiation.

[0003] Various cooling strategies have been introduced to alleviate heat stress and ensure optimal work performance, including pre-cooling (cooling before activity), cooling during activity, and post-cooling (cooling after activity). Industrial fans driven by heavy motors have been used as cooling measures to circulate air around the body to promote convective and evaporative heat transfer. However, limited workspace and lack of electricity may make such cooling measures difficult to implement. Researchers have demonstrated that immersion in cold water at a temperature of 10°C to 20°C can reduce core temperature. However, the delivery and storage of cold water may not be feasible. Some studies have utilized cold water beverages (14°C to 16°C), but with limited effectiveness in alleviating heat fatigue.

[0004] Personal cooling garments (PCGs) have been shown to be effective in reducing the risk of heat-related illness and injury. Various studies have been conducted on different PCGs (such as air cooling garments, phase change cooling garments, liquid cooling garments, and evaporative cooling garments). It has been suggested that PCGs, as portable devices, can provide better cooling than industrial fans and cold water. Conventional air cooling garments blow ambient air into the microclimate of clothing, and cannot provide effective cooling because the cooling is limited by the air temperature. Evaporative cooling garments, phase change cooling garments, and liquid cooling garments have been suggested as effective ways to provide cooling, but they are all heavy and cause discomfort due to the wet feeling on the skin. Hybrid cooling systems (such as a combination of air cooling and phase change cooling, or a combination of liquid cooling and phase change cooling) have been proposed to improve cooling performance, but they still have some limitations in terms of weight and wet feeling on the skin.

[0005] Previous surveys have shown that commercial cooling vests used by outdoor workers are not well adopted by them due to insufficient cooling capacity, short cooling duration, and poor ergonomic design.

[0006] There is a need in the art for a personal cooling system for outdoor workers that can overcome the discomfort associated with a feeling of dampness, enhance cooling performance, and improve the overall comfort of outdoor workers. Additionally, other desired features and characteristics will become apparent from the following detailed description and the appended claims, in conjunction with the accompanying drawings and the background of the present disclosure. Summary of the Invention

[0007] Provided herein is a personal cooling garment, comprising: a garment body; an air cooling system disposed on an outer surface of the garment body, wherein the air cooling system further comprises a receptacle and a coolant received in the receptacle; and an air circulation system disposed on an inner surface of the garment body for extracting raw air from an internal space within the garment body for cooling. The air circulation system is separated from the air cooling system to prevent direct contact between the raw air and the coolant of the air cooling system. The air cooling system is in thermal communication with the air circulation system.

[0008] Further provided is a cooling device for an internal space enclosed by a housing, comprising: an air cooling system disposed on an outer surface of the housing, wherein the air cooling system further comprises a receptacle and a coolant received in the receptacle; and an air circulation system disposed on an inner surface of the housing for extracting raw air from the internal space for cooling. The air circulation system is separated from the air cooling system to prevent direct contact between the raw air and the coolant of the air cooling system. The air cooling system is in thermal communication with the air circulation system. Brief Description of the Drawings

[0009] The drawings include figures that further illustrate and clarify the above and other aspects, advantages, and features of the present disclosure. It should be understood that these drawings only depict certain embodiments of the present disclosure and are not intended to limit its scope. It should also be understood that these drawings are illustrated for simplicity and clarity and are not necessarily drawn to scale. The present disclosure will now be described and explained with additional features and details by using the drawings:

[0010] Figure 1A and Figure 1B shows a personal cooling garment according to certain embodiments of the present disclosure.

[0011] Figure 2A and Figure 2B shows the structure of a container according to certain embodiments of the present disclosure.

[0012] Figure 3A and Figure 3B shows an outer compartment of a container comprising an air cooling system according to certain embodiments of the present disclosure.

[0013] Figure 4A and Figure 4BShows an internal compartment of a container according to certain embodiments of the present disclosure.

[0014] Figure 5 Shows an air circulation system according to certain embodiments of the present disclosure.

[0015] Figure 6A and Figure 6B Shows an air chamber of an air circulation system according to certain embodiments of the present disclosure.

[0016] Figure 7 Shows an air circulation system according to certain embodiments of the present disclosure.

[0017] Figure 8A 、 Figure 8B and Figure 8C Shows a lid of an air chamber and an air dispersion system according to certain embodiments of the present disclosure.

[0018] Figure 9 Shows an air flow path within a personal cooling garment according to certain embodiments of the present disclosure.

[0019] Figure 10 Shows the air temperature drop at the outlet at different air flow rates under environmental conditions of 30 °C and 40% relative humidity (RH). Detailed Description

[0020] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0021] Benefits, advantages, solutions to problems, and any elements that may cause any benefit, advantage, or solution to occur or become more pronounced should not be construed as critical, essential, or necessary features or elements of any or all of the claims. The invention is defined only by the appended claims, including any modifications made during the pendency of this application and all equivalents of those claims as issued.

[0022] In the following claims and in the foregoing description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations thereof (such as "comprises" or "comprising") is used in an inclusive sense, i.e., specifying the presence of the stated feature but not excluding the presence or addition of further features in various embodiments of the invention.

[0023] Unless otherwise specified herein, the values stated herein are exemplary and are not intended to limit the invention to a particular configuration or set of values, but merely to indicate a set of possible values.

[0024] Figure 1A FIG. 1 shows a personal cooling garment 100 according to certain embodiments of the present disclosure. The personal cooling garment 100 includes a garment body 102, an air cooling system 140 (as shown in Figure 3A and Figure 3B FIG. 2) and an air circulation system 160 (as shown in Figure 5 FIG. 3). The air cooling system 140 is disposed on an outer surface of the garment body 102. The air circulation system 160 is disposed on an inner surface of the garment body 102 for extracting raw air from an interior space within the garment body 102 for cooling. The personal cooling garment body 100 is configured to reduce the body temperature of a wearer and reduce the risk of heat stroke during outdoor activities, while overcoming discomfort associated with a feeling of dampness.

[0025] In certain embodiments, the present disclosure may also be implemented as a cooling device for an interior space enclosed by a housing, a film, or other barrier material. The cooling device includes an air cooling system 140 and an air circulation system 160. The air cooling system 140 is disposed on an outer surface of the housing. The air circulation system 160 is disposed on an inner surface of the housing for extracting raw air from the interior space for cooling.

[0026] The garment body 102 may be any type of clothing made of any material suitable for a wearer to wear, particularly for outdoor activities. Figure 1A The garment body 102 is illustrated as a vest with a front zipper. It will be apparent that, without departing from the scope and spirit of the present disclosure, the garment body 102 may also be other clothing, such as, for example, a vest, a jacket, a coat, a top, a construction worker's uniform, a firefighter's uniform, work clothes, pants, trousers, shorts, etc. Figure 1B FIG. 4 shows a personal cooling garment 100 having another type of garment body 102 according to certain embodiments of the present disclosure. As shown in Figure 1B FIG. 5, the garment body 102 includes a waist belt 132, a back pad 134, and two shoulder straps 136 that are connected to the back pad 134. The waist belt 132 is worn around the user's waist, and the back pad 134 is worn at the user's back. When in use, the back pad 134 is connected to the waist belt 132 via one or more buckles 137, and the two shoulder straps 136 span the user's shoulders and are connected to the waist belt 132 via one or more buckles 138.

[0027] Although the garment body 102 can be made of any material, it is desirable to minimize the escape of air from inside the garment. Thus, a fabric with low breathability but still breathable is preferred. Additionally, considering the outdoor environmental conditions, it is important to protect the skin from excessive ultraviolet (UV) radiation. Nylon that can effectively absorb UV radiation in the wavelength range of 280 nm to 400 nm can be selected as the outer shell material of the garment body 102.

[0028] In some embodiments, the garment body 102 is provided with a container 122 for holding the air cooling system 140 and the air circulation system 160. In Figure 1A and Figure 1B In the illustrated embodiment, the container 122 is located on the lower back of the garment body 102. It will be apparent to those skilled in the art that, without departing from the scope and spirit of the present disclosure, the container 122 can be located at other suitable positions of the garment body 102, such as the upper front (chest), lower front (abdomen), or lower side (waist).

[0029] Figure 2A and Figure 2B show the structure of the container 122 according to certain embodiments of the present disclosure. The container 122 includes an outer compartment 124 and an inner compartment 134, the positions of which are as indicated in Figure 2B The outer compartment 124 is a compartment attached to the garment body 102 and accessible from the outside. Preferably, the outer compartment 124 is provided on the lower back of the garment body 102. The inner compartment 134 is a separate compartment placed inside the garment body 102 facing the wearer and not accessible from the outside.

[0030] Figure 3A and Figure 3B show the outer compartment 124 of the container 122 for accommodating the air cooling system 140 according to certain embodiments of the present disclosure. The outer compartment 124 can have a pocket design, which includes a pocket 126 attached to the garment body 102 from the outside, and preferably includes a covering 128 for closing the pocket 126. The covering 128 and the pocket 126 can be sewn to the garment body 102, or attached or fixed to the garment body 102 in any other suitable manner (such as by adhesion or Velcro tape), or integrated into the garment body 102. As shown in Figure 3A As shown, the covering 128 can be attached to the pocket 126 by a Velcro tape or other hook-and-loop interface, where the Velcro tape includes a loop surface and a hook surface respectively provided on the upper part of the pocket 126 or the lower side of the covering. As shown in Figure 3BAs shown, the buckle strap is used to fix the cover 128 to the pocket 126 to close the pocket 126. The outer compartment 124 is used to accommodate the air cooling system 140.

[0031] In addition, a heat insulation layer (not shown) can be provided outside the outer compartment 124 to reduce heat loss to the environment. In some embodiments, the heat insulation layer is formed on or attached to the pocket 126 and includes a material having a low thermal conductivity value.

[0032] Figure 4A and Figure 4B The inner compartment 134 of the container 122 according to some embodiments of the present disclosure is shown. As shown in the figure, the inner compartment 134 includes a buckle strap and a cover 136. The cover 136 has a rectangular shape with two short edges and two long edges, and one of the long edges is attached or fixed to the inner surface of the garment body 102. The buckle strap includes two base members 138 on the garment body 102 and two hook-and-loop fasteners 137 provided on the two short edges of the cover 136. Specifically, the base members 138 are attached to the inner surface of the garment body 102 and are provided with hook / loop surfaces such that the two hook-and-loop fasteners 137 of the cover 136 can cooperate with the hook / loop surfaces of the base members 138 to form an inner pocket for at least partially holding the air circulation system 160.

[0033] It is obvious that, according to some embodiments, the inner compartment 134 can also be provided as a pocket attached to the inner surface of the garment body 102, similar to Figure 3A and Figure 3B the pocket 126 shown in. Similarly, the outer compartment 124 can also be made of a buckle strap.

[0034] As Figure 3A shown, the air cooling system 140 is provided on the outer surface of the garment body 102, specifically, in the outer compartment 124 of the container 122. The air cooling system 140 is used to cool the air taken from inside the garment body 102. In some embodiments, the air cooling system 140 includes a containing member 148 and a coolant included in the containing member 148. The coolant can be ice, cold water or any other suitable coolant (such as dry ice). The containing member 148 can be any containing member, such as a plastic bag, a foil bag, etc. The coolant can be added to the containing member 148, sealed and placed in the pocket 126 of the outer compartment 124.

[0035] Figure 5FIG. 160 shows an air circulation system 160 according to certain embodiments of the present disclosure. The air circulation system 160 is disposed on the inner surface of the garment body 102. Specifically, the air circulation system 160 is positioned within the inner compartment 134 of the container 122. The air drawn into the air circulation system from the internal space is referred to as raw air. The air circulation system 160 includes an air chamber 162 leading to the internal space within the garment body 102, one or more blowers 164, and a battery pack 166. The one or more blowers 164 are in fluid communication with the air chamber 162 to facilitate drawing in raw air from the internal space within the garment body 102 and delivering the raw air to the air chamber 162 for cooling. The battery pack 166 may include one or more battery cells and is electrically connected to the one or more blowers 164 to power them. The one or more battery cells may be rechargeable battery cells such as lithium-ion batteries, lithium polymer batteries, nickel-metal hydride batteries, etc. The battery pack 166 may be placed in a front pocket or any other location.

[0036] Advantageously, the air circulation system 160 is separated from the air cooling system 140 to avoid direct contact between the raw air and the coolant of the air cooling system 140. Thus, the raw air will not be delivered to the air cooling system to contact the coolant in the air cooling system, thereby avoiding adding moisture, which may cause discomfort associated with a moist feeling. The air cooling system 140 is in thermal communication with the air circulation system 160 for heat exchange.

[0037] Figure 6A and Figure 6B FIG. 162 shows an air chamber 162 according to certain embodiments of the present disclosure. The air chamber 162 includes a chamber body 170 having an opening 172 and one or more air inlets 178. As Figure 5 shown, the one or more air inlets 178 are tubes that are respectively connected to the outlets of the one or more blowers 164.

[0038] The chamber body 170 may be a hollow box having a lower base surface 194 and side surfaces 196 that project from the lower base surface 194 and are substantially perpendicular to the lower base surface 194. The lower base surface 194 and the side surfaces 196 may be manufactured separately and fixed or assembled together. They may also be formed integrally.

[0039] In some embodiments, the chamber body 170 may optionally have an upper base surface 192. In some embodiments, the upper base surface 192 and the lower base surface 194 are the same and arranged in parallel. Preferably, the upper base surface 192 is provided with the opening 172, and the side surface 196 is provided with one or more air inlets 178. In some embodiments, one or more air inlets 178 are tubes that are tangentially aligned with the periphery of the chamber body 170 along the side surface 196. The upper base surface and the lower base surface may have a circular shape (as shown in Figure 6A and Figure 6B ), a square shape, or any other suitable shape.

[0040] As shown in Figure 6A and Figure 6B , the chamber body 170 may further include a plurality of fins 179, which are arranged in a certain pattern to guide the circulation of the raw air in the air chamber 162 and improve the heat exchange between the raw air and the coolant in the air cooling system 140. In some embodiments, the plurality of fins 179 are arranged in the space within the chamber body 170. Each of the plurality of fins 179 projects from the lower base surface of the chamber body 170. Preferably, the plurality of fins 179 are evenly arranged in rows and columns, or arranged in concentric circles. When in use, the air chamber 162 is placed in such a way that the lower base surface 194 of the air chamber body 170 faces the garment body 102 and the upper base surface 179 faces the wearer's body.

[0041] In some embodiments, the air chamber 162 may optionally have a cover 174. Figure 8A , Figure 8B and Figure 8C show some embodiments of the cover 174, which Figure 8A , Figure 8B and Figure 8C also show the air distribution system that will be described later. The cover 174 may be made of plastic and has an outlet 176. Preferably, the outlet 176 is substantially located at the center of the cover 174. The chamber body 170 may be made of aluminum alloy, which can be manufactured by selective laser melting (SLM) 3D printing or any suitable metalworking technique, followed by heat treatment at 300 °C to improve corrosion resistance. The cover 174 may be manufactured by stereolithography (SLA) 3D printing using a super tough resin (UTR) (such as UTR 9000E). One or more blowers 164 may be any commercially available blower with a suitable weight, air flow rate, size, and cooling effect. (i.e., the degree of its matching with the garment body 102).

[0042] The outlet of one or more blowers 164 is connected to the air inlet 178 of the chamber body 170 of the air chamber 162, such that raw air can be circulated from one or more blowers 164 into the chamber body 170.

[0043] One or more blowers 164 are configured to facilitate the inhalation of raw air from the interior space within the garment body 102 and deliver the raw air to the air chamber 162 for cooling. When the air cooling system 140 is in thermal communication with the air circulation system 160, the raw air is circulated within the air chamber 162 and undergoes heat exchange with the coolant within the air cooling system 140. The cold air is then discharged back into the interior space within the garment body 102 for reducing the body temperature of the wearer. In one embodiment, the cold air is discharged through the opening 172 of the chamber body 170. In an alternative embodiment, the cold air is discharged back into the interior space within the garment body 102 through the outlet 176 of the cover 174.

[0044] The air circulation system 160 can be activated by a manual knob (not shown) located, for example, in the battery pack 166.

[0045] The personal cooling garment 100 can further include an adjustment knob or dial (not shown) disposed within the air chamber 162 to control and adjust the temperature of the cold air.

[0046] Figure 7 An air circulation system 260 is shown in accordance with certain embodiments of the present disclosure. As Figure 7 shown, the air circulation system 260 is similar to Figure 5 , Figure 6A and Figure 6B the air circulation system 160 shown, except that the chamber body is integrated with one or more blowers.

[0047] As Figure 7 shown, the air circulation system 260 includes an air chamber 262 leading to the interior space within the garment body 102, one or more blowers 264, and a battery pack (not shown). The air chamber 262 includes a chamber body 270 and one or more air inlets 278. The chamber body 270 has a lower base surface 294, side surfaces 296, and an upper base surface 298 optionally having an opening 272. The lower base surface 294, side surfaces 296, and upper base surface 298 are manufactured separately and fixed or assembled together to form the chamber body 270. A plurality of fins 279 project from the lower base surface 294.

[0048] As Figure 7As shown, the side surface 296 of the chamber body 270 has an outer surface 297 and an inner surface. One or more hollow cylinders 256 are disposed on the outer surface 297 of the side surface 296 to respectively accommodate one or more blowers 264. One or more air inlets 278 are respectively disposed between the one or more hollow cylinders 256 and the side surface 296 to fluidly connect the one or more blowers 264 respectively accommodated in the one or more hollow cylinders 256 and the chamber body 270. Optionally, a lower frame 254 may be provided to hold the one or more blowers 264 respectively accommodated in the one or more hollow cylinders 256. As Figure 7 shown, the lower frame 254 may be a plate having a cross-section consistent with that of the one or more hollow cylinders 256 and the chamber body 270. The plate has an opening 255 at the center for accommodating the lower base surface 294 of the chamber body 270, and one or more recesses 257 for accommodating the one or more blowers 264. Optionally, one or more hollow cylinders 258 may also be provided on the upper base surface 298 to respectively accommodate the one or more blowers 264. The one or more blowers 264 may be fixed to the one or more hollow cylinders 256 or held in place by the one or more recesses 257 of the lower frame 254. Optionally, an adjustment turntable 295 may be provided on the upper base surface 298 for controlling and adjusting the one or more blowers 264.

[0049] In addition, the personal cooling garment 100 may further include an air distribution system for distributing the cold air from the air circulation systems 160, 260. As Figure 8A , Figure 8B and Figure 8C shown, an air distribution system 180 may be provided to distribute the cold air from the opening 172 of the chamber body 170 of the air chamber 162. In certain embodiments as Figure 8A shown, the air distribution system 180 includes a flat triangular prism member that is fluidly connected to the air chamber 162 and one of whose side surfaces 180a is open. In Figure 8A , the flat triangular prism member is fluidly connected to the air chamber 162 by connecting the corner 180b opposite the open side surface 180a to the air outlet 176 of the cover 174 via a tube. It is obvious that the flat triangular prism member can be fluidly connected to the air chamber 162 by any other suitable means. In certain embodiments, as Figure 5 and Figure 8C shown, the flat triangular prism member may be extended into a flat box whose cross-section is a combination of a semi-circle and a rectangle, and the flat box covers the entire cover 174 such that the air chamber 162 and its cover 174 are not visible from above. In as Figure 8BIn certain embodiments shown, the air distribution system 180 includes one or more flexible tubes for distributing cold air to different locations within the internal space of the garment body 102. Preferably, the one or more flexible tubes are arranged to be directly connected to the air outlet 176 of the opening 172 or the cover 174 and redirect the cold air to different locations within the internal space of the garment body 102. Thus, the cold air can be evenly distributed to reduce the body temperature of the wearer. In Figure 8B FIG. Figure 8B , the one or more flexible tubes are illustrated as one flexible tube connected to the air outlet 176 of the cover 174. It will be apparent that they can be two or more flexible tubes directly connected to the air outlet 176 of the opening 172 or the cover 174. The above embodiments illustrate the air distribution system 180 with reference to the air circulation system 160. It will be apparent to those skilled in the art that the above air distribution system 180 can also be applied to Figure 7 the air circulation system 260 or any other embodiment of the air circulation system shown in FIG. Figure 7 .

[0050] As described above, the air taken from the internal space within the garment body 102 is referred to as raw air. Figure 9 FIG. Figure 9 shows the air flow path within a personal cooling garment according to certain embodiments of the present disclosure. As Figure 9 illustrated in FIG. Figure 9 , for the personal cooling garment 100, the raw air from the internal space within the garment body 102 is drawn into the air chamber 162 by the blower 164 and passes through a plurality of fins 179 in the air chamber 162, where the raw air exchanges heat with the coolant in the air cooling system 140 ( Figure 9 not shown in FIG. Figure 9 ) and is thereby cooled. The cold air is then discharged back into the internal space within the garment body 102 to reduce the body temperature of the wearer.

[0051] In one embodiment, the cold air is discharged through the opening 172 of the chamber body 170 of the air chamber 162. In an alternative embodiment, the cold air is discharged through the outlet 176 of the cover 174. If there is an air distribution system 180, the cold air is discharged into the air distribution system 180 for uniform distribution to different locations within the internal space of the garment body 102. The coolant in the air cooling system 140 is in thermal communication with the air entering the air chamber 162 and passing through the plurality of fins 179 to continuously exchange heat with the raw air, which can carry away the excess heat on the body surface.

[0052] As can be seen from the above, the original air inhaled by the blower 164 into the air chamber 162 and passing through the plurality of fins 179 in the air chamber 162 exchanges heat with the coolant contained in the housing 148 of the air cooling system 140 outside the clothing body 102. Thus, the air chamber 162 avoids direct contact between the original air and the coolant of the air cooling system 140. The cool and dry original air (or "cold air") is used to cool the body of the wearer. Therefore, this process can separate the coolant from the original air, which can effectively cool the original air and avoid adding moisture to the original air. The cooling efficiency can also be enhanced.

[0053] Figure 10 The air temperature drop at the outlet under different air flow rates is shown under the environmental conditions of 30 °C and 40% RH (relative humidity). As Figure 10 shown, under the environmental conditions of 30 °C and 40% RH, a thermal manikin (constant mean skin temperature: 35 °C) was used to study the cooling efficiency of the newly designed personal cooling clothing. When the cooling function of the cooling system was turned on (the adjustment knob was turned on and the coolant was filled), the air temperature was measured at the outlet, and this air temperature can be considered as the microclimate temperature inside the cooling clothing. When it started to cool, the total power input was 5 W, and we tested the air temperature drop at the outlet with blowers at different flow rates (20 L / min, 30 L / min, 40 L / min, and 60 L / min). The experimental results show that the cooling power increases when the ice starts to melt and gradually decreases after all the ice has melted. When the flow rate is 20 L / min, the best cooling effect can provide a temperature drop of about 16 °C for the microclimate of the clothing. The ice inserted into the pocket weighs about 0.3 kg and can last for more than 200 minutes at different air flow rates.

[0054] This figure illustrates a cooling device and a personal cooling clothing according to the present disclosure. It should be apparent that the above-described variations and other features and functions or their alternatives can be integrated into other devices. Therefore, this embodiment is considered illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the appended claims rather than the foregoing description, and thus, all changes within the meaning and scope of the equivalents of the claims are intended to be included therein.

Claims

1. A personal cooling garment, comprising: A garment body; An air cooling system disposed on an outer surface of the garment body, wherein the air cooling system further comprises a housing and a coolant accommodated in the housing; And An air circulation system disposed on an inner surface of the garment body for extracting raw air from an internal space within the garment body for cooling, Wherein: The air circulation system is separated from the air cooling system to prevent direct contact between the raw air and the coolant of the air cooling system; and The air cooling system is in thermal communication with the air circulation system.

2. The personal cooling garment according to claim 1, wherein the air circulation system further comprises: An air chamber leading to the internal space within the garment body; One or more blowers fluidly connected to the air chamber for inhaling the raw air from the internal space within the garment body and delivering the raw air to the air chamber; And A battery pack electrically connected to the one or more blowers for powering the one or more blowers.

3. The personal cooling garment according to claim 2, wherein the air chamber comprises a chamber body having an opening and one or more air inlets; and wherein the one or more air inlets are respectively connected to the one or more blowers.

4. The personal cooling garment according to claim 3, wherein the chamber body is a hollow box having a lower base surface and side surfaces protruding from the lower base surface and substantially perpendicular to the lower base surface, and wherein the side surfaces are provided with the one or more air inlets.

5. The personal cooling garment according to claim 4, wherein the chamber body further comprises an upper base surface provided with the opening.

6. The personal cooling garment according to claim 4, wherein the chamber body and the one or more blowers are integrated, and one or more hollow cylinders are disposed on an outer surface of the side surface of the chamber body to respectively accommodate the one or more blowers, wherein the air inlets are respectively disposed between the one or more hollow cylinders and the side surface.

7. The personal cooling garment according to claim 4, wherein the one or more air inlets are tubes tangentially aligned with the periphery of the chamber body along the side surface.

8. The personal cooling garment according to claim 4, wherein the chamber body further comprises a plurality of fins disposed in a space within the chamber body.

9. The personal cooling garment according to claim 8, wherein each of the plurality of fins protrudes from the lower base surface of the chamber body, and wherein the plurality of fins are uniformly arranged in rows and columns, or arranged in concentric circles.

10. The personal cooling garment according to claim 2, wherein the air chamber further comprises a cover having an outlet, and wherein the raw air is cooled in the air chamber and discharged back into the internal space within the garment body through the outlet of the cover.

11. The personal cooling garment according to claim 2, further comprising an air distribution system for distributing cold air from the air chamber to different positions in the internal space within the garment body, wherein the air distribution system comprises a flat triangular prism member that is fluidly connected to the air chamber and has one side surface open, or the air distribution system comprises one or more flexible tubes that are fluidly connected to the air chamber, or the air distribution system comprises a flat box that is fluidly connected to the air chamber and has a cross-section that is a combination of a semi-circle and a rectangle.

12. The personal cooling garment according to claim 1, wherein the garment body comprises a container, and the container comprises an outer compartment for accommodating the air cooling system and an inner compartment for accommodating the air circulation system.

13. The personal cooling garment according to claim 12, wherein the inner compartment is placed within the garment body and comprises a buckle strap and a covering member, or a pocket attached to the inner surface of the garment body.

14. The personal cooling garment according to claim 12, wherein the outer compartment comprises a pocket attached to the garment body and a covering for closing the pocket.

15. The personal cooling garment according to claim 14, wherein a heat insulation layer is provided outside the outer compartment to reduce heat loss; and the heat insulation layer comprises a material having a low thermal conductivity value.

16. The personal cooling garment according to claim 1, wherein the coolant comprises ice, cold water or dry ice.

17. A cooling device for an internal space enclosed by a housing, the cooling device comprising: an air cooling system disposed on an outer surface of the housing, wherein the air cooling system further comprises a receptacle and a coolant received in the receptacle; and an air circulation system disposed on an inner surface of the housing for extracting raw air from the internal space for cooling, wherein: the air circulation system is separated from the air cooling system to prevent direct contact between the raw air and the coolant of the air cooling system; and the air cooling system is in thermal communication with the air circulation system.

18. The cooling device according to claim 17, wherein the air circulation system further comprises: an air chamber that leads to the internal space within the housing; one or more blowers that are fluidly connected to the air chamber for sucking the raw air from the internal space within the housing and delivering the raw air to the air chamber; and a battery pack that is electrically connected to the one or more blowers for powering the one or more blowers.

19. The cooling device according to claim 18, wherein the chamber body comprises a chamber body having an opening and one or more air inlets, and the one or more air inlets are respectively connected to outlets of the one or more blowers.

20. The cooling device according to claim 19, wherein the air chamber is a hollow box having a lower base surface and side surfaces protruding from the lower base surface and substantially perpendicular to the lower base surface, and wherein the one or more air inlets are provided on the side surfaces.

21. The cooling device according to claim 20, wherein the chamber body further comprises a plurality of fins arranged in a space within the chamber body; wherein each of the plurality of fins protrudes from the lower base surface of the chamber body; and wherein the plurality of fins are uniformly arranged in rows and columns or in concentric circles.

22. The cooling device according to claim 17, wherein the coolant comprises ice, cold water or dry ice.

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