Cooling equipment

Abstract

To provide a cooling device capable of preventing the human body from being cooled too much and improving usability during cooling. [Solution] The cooling device 10 comprises an outer bag 100, a PCM pack 300, an antifreeze gel 200, and an insulating sheet 400. The outer bag has an upper surface 110, a lower surface 120, and an opening. The PCM pack is a member that encapsulates a PCM (phase change material) with a phase transition temperature of 16°C to 28°C. The antifreeze gel is encapsulated inside the upper surface. The insulating sheet is configured inside the lower surface. The outer bag is configured so that the PCM pack can be inserted and removed between the antifreeze gel and the insulating sheet through the opening.

Description

[Technical field]

[0001] This specification discloses a technique relating to a cooling device. [Background technology]

[0002] In the cooling tool of Patent Document 1, a frozen layer that freezes at -15°C to 9°C is arranged to be sandwiched between an antifreeze layer that does not freeze at -20°C and a heat insulating layer. This cooling tool needs to be cooled in its entirety in a freezer before use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-97491 A Summary of the Invention [Problem to be solved by the invention]

[0004] The antifreeze layer in the cooling tool of Patent Document 1 has a certain specific heat that does not change phase in the environment in which the cooling tool is used, so there is a problem that the temperature of the cooling tool becomes too cold for the human body for most of the time the cooling tool is used. Also, the cooling tool of Patent Document 1 has a problem that the entire cooling tool occupies space in the freezer when cooling. [Means for solving the problem]

[0005] A cooling tool in one embodiment disclosed in the present specification includes an outer bag having an upper surface, a lower surface, and an opening; an antifreeze gel enclosed inside the upper surface; a PCM pack encapsulating a PCM (phase change material) having a phase transition temperature of 16°C to 28°C; and a heat insulating sheet arranged inside the lower surface. The outer bag is configured so that the PCM pack can be inserted and removed between the antifreeze gel and the heat insulating sheet through the opening. According to this embodiment of the cooling tool, by cooling only the PCM pack encapsulating a PCM having a phase transition temperature of 16°C to 28°C and using the cooling tool, a temperature comfortable for the human body of about 16°C to 28°C can be maintained for most of the time the cooling tool is used. As a result, a comfortable cooling sensation for the human body can be continuously provided and the human body can be prevented from being overcooled. In addition, according to this embodiment of the cooling tool, since the PCM pack can be removed from the outer bag and only the PCM pack can be cooled, the space in the freezer required for freezing can be reduced compared to when the entire cooling tool is cooled. Furthermore, with this type of cooling device, the PCM pack can be frozen in an environment below the phase transition temperature of the PCM pack, so the PCM pack can be cooled without using a freezer. As a result, the ease of use when cooling the cooling device can be improved. This type of cooling device can be realized in specific forms such as a pillow, a cushion, and a rug. [Brief description of the drawings]

[0006] [Figure 1] FIG. 2 is an explanatory diagram showing the cooling device as viewed from above. [Diagram 2] FIG. 4 is an explanatory diagram showing the cooling device as viewed from the bottom side. [Diagram 3] FIG. 2 is an explanatory diagram showing a partial cross section of the cooling device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Fig. 1 is an explanatory diagram showing the cooling tool 10 as viewed from the upper surface 110 side. Fig. 2 is an explanatory diagram showing the cooling tool 10 as viewed from the lower surface 120 side. Fig. 3 is an explanatory diagram showing a partial cross section of the cooling tool 10.

[0008] The cooling device 10 is a pillow on which a human head is placed. The cooling device 10 includes an outer bag 100, an antifreeze gel 200, a PCM pack 300, and a heat insulating sheet 400.

[0009] The outer bag 100 of the cooling device 10 has an upper surface 110, a lower surface 120, and an opening 130. The upper surface 110 of the outer bag 100 is the surface that faces upward (toward a person's head) when the cooling device 10 is used as a pillow. The lower surface 120 of the outer bag 100 is the surface that faces downward (toward the floor) when the cooling device 10 is used as a pillow.

[0010] The opening 130 of the outer bag 100 is an open area allowing the PCM pack 300 to be inserted and removed from the inside of the outer bag 100. The outer bag 100 is configured so that a user can insert and remove the PCM pack 300 between the antifreeze gel 200 and the heat insulating sheet 400 through the opening 130. The opening 130 is provided on the lower surface 120. The opening 130 may be provided on the upper surface 110. The opening 130 may be provided at the boundary between the upper surface 110 and the lower surface 120. The opening 130 is configured to be openable and closable by a line fastener 135. The opening 130 may be configured to be openable and closable by a fastener such as a hook and loop fastener, a button, or a hook. The opening 130 may have a structure that is not closed by a fastener.

[0011] The outer bag 100 comprises an upper sheet 112, an antifreeze gel enclosing sheet 212, a lower sheet 122, and perforations 180. The upper sheet 112 of the outer bag 100 is a sheet that constitutes the upper surface 110. The antifreeze gel enclosing sheet 212 of the outer bag 100 is a sheet that encloses the antifreeze gel 200 between the upper sheet 112 and the outer bag 100. In this embodiment, the antifreeze gel enclosing sheet 212 is an aluminum sheet. The lower sheet 122 of the outer bag 100 is a sheet that constitutes the lower surface 120. The perforations 180 of the outer bag 100 are seams formed when the outer bag 100 is sewn.

[0012] When making the outer bag 100, the manufacturer layers the bottom sheet 122 on top of the heat insulating sheet 400. Then, the manufacturer layers the top sheet 112 on top of the bottom sheet 122. Then, the manufacturer layers the antifreeze gel 200 on top of the top sheet 112. Then, the manufacturer layers the antifreeze gel sealing sheet 212 on top of the antifreeze gel 200. Then, the manufacturer sews each sheet in a portion along the outer periphery of the antifreeze gel 200. Then, the manufacturer turns the outer bag 100 inside out so that the perforations 180 are on the inside. This completes the outer bag 100.

[0013] The antifreeze gel 200 of the cooling device 10 is integrally enclosed inside the upper surface 110. The antifreeze gel 200 is a known gel of a nonfreeze type that does not freeze even at the freezing temperature (approximately −20° C.) of a general household freezer.

[0014] The PCM pack 300 of the cooling device 10 includes two encapsulation sheets 312, 314 and a PCM (phase change material) 350. The PCM 350 is encapsulated between the encapsulation sheets 312 and 314. The PCM 350 is a known phase change material with a phase transition temperature adjusted to 18°C. The PCM 350 may be any known phase change material with a phase transition temperature adjusted to a range of 16°C to 28°C.

[0015] The heat insulating sheet 400 of the cooling tool 10 is integrally formed on the inside of the lower surface 120. In this embodiment, the heat insulating sheet 400 is a heat insulating sheet in which the PCM pack 300 side is made of an aluminum sheet and the lower sheet 122 side is made of a foamed resin.

[0016] Prior to using the cooling device 10, the user removes the PCM pack 300 from the outer bag 100 through the opening 130 (see Figure 2). The user then cools the PCM pack 300. The environment in which the PCM pack 300 is cooled is not limited to a freezer, but may be any environment below the phase transition temperature of the PCM 350. After the PCM 350 has frozen, the user places the PCM pack 300 between the antifreeze gel 200 and the insulating sheet 400 inside the outer bag 100 through the opening 130. This enables the cooling device 10 to be used as a cooling pillow.

[0017] According to the cooling device 10 described above, by using the cooling device 10 by cooling only the PCM pack 300 that encloses the PCM 350 having a phase transition temperature of 18°C, a temperature comfortable for the human body of about 18°C ​​can be maintained for most of the time the cooling device 10 is used. As a result, a comfortable cool feeling for the human body can be continuously provided and the human body can be prevented from being overcooled. Furthermore, according to the cooling unit 10 of this form, the PCM pack 300 can be removed from the outer bag 100 and only the PCM pack 300 can be cooled, so the space in the freezer required for freezing can be reduced compared to when the entire cooling device is cooled. Furthermore, according to the cooling device of this form, the PCM pack 300 can be frozen in an environment below the phase transition temperature of the PCM pack 300, so the PCM pack 300 can be cooled without using a freezer. As a result, the usability of the cooling device 10 when cooling can be improved. The cooling device 10 of this form can be realized in the form of a pillow, a cushion, a rug, and the like.

[0018] The technology disclosed in this specification is not limited to the above-mentioned embodiment, example, and modification, and can be realized in various configurations without departing from the spirit thereof. For example, among the technical features in the above-mentioned embodiment, example, and modification, those corresponding to the technical features in each form described in the summary of the invention can be appropriately replaced and combined to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. In addition, technical features that are not described as essential in this specification can be appropriately deleted. [Explanation of symbols]

[0019] 10. Cooling equipment 100…Outer bag 110…Top surface 112…Top sheet 120…Bottom surface 122…Lower sheet 130…Opening 135…Line fastener 180…perforation 200…Antifreeze gel 212...Antifreeze gel sheet 300…PCM pack 350…PCM 312…Enclosed sheet 314…Enclosed sheet 400…Thermal insulation sheet

Claims

[Claim 1] A cooling device comprising: an outer bag having an upper surface, a lower surface and an opening; An antifreeze gel enclosed inside the upper surface; A PCM pack containing a PCM (phase change material) having a phase transition temperature of 16°C to 28°C; A heat insulating sheet formed on the inside of the lower surface; Equipped with A cooling device, wherein the outer bag is configured so that the PCM pack can be inserted and removed between the antifreeze gel and the insulating sheet through the opening.

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