JP2020128603A - Human body cooling device and human body cooling device refrigeration system - Google Patents

Abstract

To provide a human body cooling device for work under a high temperature environment, which uses a cold insulator capable of improving an environment in a work uniform with cold heat and managing a temperature for a long time while the device is small and light, and to provide a portable human body cooling device refrigeration system with excellent energy efficiency for refrigerating the human body cooling device.SOLUTION: In a human body cooling device incorporating a plurality of cold insulators for cooling a body of a wearer, the cold insulator is enclosed between two resin sheets having flexibility in a tabular shape, and the cold insulator is arranged via a heat insulating material between an outer cloth and an inner cloth of the human body cooling device. The cold insulators are formed as a cooling belt where the plurality of cold insulators are connected by the resin sheets, and the cooling belt is detachably incorporated in the human body cooling device.SELECTED DRAWING: Figure 3

Description

The present invention relates to a human body cooling device and a human body cooling device refrigeration system for cooling the environment inside work clothes for working in a high temperature environment.

Various types of work clothes have been developed in order to suppress an abnormal rise in body temperature when working in a high temperature environment such as in the summer. As such a work clothes, for example, in Patent Document 1, it is an air-conditioning clothes provided with a fan that takes in outside air, and the air-conditioning clothes have an outer material and a lining. An air conditioning garment is disclosed that forces an air flow in the space between.

Further, in Patent Document 2, a blower case having an air intake port and an air discharge port, a blower fan provided in the blower case, a motor for driving the blower fan, and a control unit connected to the motor, An operating switch connected to this control unit, and a portable power source connected to the control unit and a motor are provided, and to the control unit, a sensor for detecting at least one of temperature and humidity is connected, and this sensor is Disclosed is a blower for cooling clothes, which is arranged in a part of an air passage from an air suction port to an air discharge port of the blower case.

However, in these work clothes, since the environment air is blown by a small blower fan, the body temperature of the wearer rises and the sweat that perspires is evaporated by the flow of the environment air, and the cooling effect is limited. Target. Further, these air-cooled work clothes have problems that they are bulky and difficult to move, and that they require a battery to be carried at all times.

In order to solve these problems, a garment body and a pocket portion provided inside the garment body for accommodating the animal cooling material are provided, and the fiber material constituting the cooling garment is made of a flame-retardant fiber. A characteristic cooling suit for working in a hot place is disclosed (see, for example, Patent Document 3). According to the cooling suit for heat station work of Patent Document 3, the human body is given a sufficient cooling sensation, the animal cooling material is easily loaded, the workability of the worker is good, and the flame retardance standard is satisfied. Produce an effect.

JP, 2008-168485, A JP, 2019-007103, A JP, 2018-53387, A

However, in the cooling clothing for hot-place work described in Patent Document 3, since the cooling capacity significantly decreases as the animal cooling material radiates heat, it is frequently necessary to replenish or replace the animal cooling material in the cooling clothing. It had a problem that it would end up.

INDUSTRIAL APPLICABILITY The present invention is a human body cooling device for working in a high-temperature environment, which uses a cold insulating material that can improve the environment inside work clothes by cold heat while being small and light, and that can perform temperature control for a long time. Another object of the present invention is to provide a portable human body cooling device refrigeration system with high energy efficiency for refrigerating the human body cooling device.

The human body cooling device of the present invention is
A human body cooling device having a plurality of cold insulators for cooling the wearer's body,
The cold insulator is formed by enclosing a cold insulator in a flat plate shape between two flexible resin sheets, and is placed between an outer cloth and an inner cloth of the human body cooling device via a heat insulating material. To be done.

The cold insulating material is formed as a cooling belt in which a plurality of the cold insulating materials are connected by the resin sheet, and the cooling belt is detachably incorporated from the human body cooling device.

The cold-retaining agent is brine in which salt is dissolved in water or brine containing an antifreeze solution.

In the human body cooling device, a plurality of types of cold insulating agents having different freezing points are dispersed and arranged in the cold insulating material.

The cold insulator is arranged in a region facing a heart and/or an intestine of a wearer of the human body cooling device.

The human body cooling device refrigeration system of the present invention,
An ice slurry raw material production section that produces flake ice from a part of the supplied brine and cools the remaining part of the supplied brine.
A flake ice storage tank for storing the ice slurry in which the flake ice generated by the ice slurry raw material manufacturing unit and the cooled brine are supplied, and the flake ice and the cooled brine are mixed,
There is a space inside which a human body cooling device containing a plurality of cold insulation materials containing a cooling agent and/or a cooling belt for connecting a plurality of cold insulation materials containing a cooling agent can be housed inside the human body cooling device. A human body cooling device that stores the ice slurry supplied from the flake ice storage tank in the space, circulates the stored ice slurry in the space, and freezes the human body cooling device and/or the cooling belt A tank,
Equipped with
The freezing point of the brine is lower than the freezing point of the cold insulating agent.

The flake ice storage tank replenishes the human body cooling device freezer with the ice slurry according to the total amount of cold heat of the human body cooling device and/or the cooling belt housed in the human body cooling device freezer.

The human body cooling device freezer includes a rack that houses the human body cooling device and/or the cooling belt therein.

According to the present invention, a human body for working in a high-temperature environment, which uses a cold insulating material that can improve the environment inside work clothes by cold heat while being small and lightly worn, and that can perform temperature control for a long time It is possible to provide a cooling device and an energy-efficient portable human body cooling device refrigeration system for freezing the human body cooling device.

It is a conceptual diagram which shows the human body cooling device used for the human body cooling device refrigeration system of this invention. It is sectional drawing which shows the cold insulator periphery of the human body cooling device used for the human body cooling device refrigeration system of this invention. It is a conceptual diagram which shows one Embodiment of the human body cooling device refrigeration system of this invention. It is a conceptual diagram which shows embodiment of the flake ice manufacturing system in the human body cooling device refrigeration system of this invention. It is a conceptual diagram which shows other embodiment of the human body cooling device refrigeration system of this invention.

Hereinafter, a human body cooling device and a human body cooling device refrigeration system according to embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.

<Definition>
The terms used in the human body cooling device and the human body cooling device refrigeration system of the present invention are defined here for clarifying the invention.

The brine is an aqueous solution of salt or the like or an antifreeze solution having a freezing point of 0° C. or lower. The brine can be used as a cooling agent that is installed within the body cooling device to cool the wearer's body. Further, the brine can be used as an ice slurry described below in a refrigeration system for freezing the ice pack. The freezing point varies depending on the type and concentration of the solute, but the brine of the refrigeration system for freezing the ice pack is selected so that it has a lower freezing point than that of the ice pack.

For example, when the cold-retaining agent is saturated saline (freezing point is -21°C), the brine is a calcium chloride aqueous solution (30% aqueous solution) having a freezing point of -55°C. When the cold-retaining agent is, for example, a magnesium chloride aqueous solution (saturated state, the freezing point is −26.27° C.), the brine has a lower freezing point than the freezing point of the cold-retaining agent (the temperature difference is preferably 20° C. or more) calcium chloride ( An aqueous solution of 30% with a freezing point of -55°C, an aqueous solution of ethylene glycol (70% aqueous solution with a freezing point of -60°C), and the like may be used. As described above, it is preferable to provide a temperature difference of at least 10° C. or more between the freezing point of the cold insulating agent and the freezing point of the brine (ice slurry described below) for freezing the cold insulating agent in order to ensure the freezing efficiency.

Hybrid ice is ice obtained by solidifying an aqueous solution (brine) containing a solute so that the concentration of the solute becomes substantially uniform. Hybrid ice has at least (a) a temperature at the time of completion of melting below 0° C., and (b) a change rate of the solute concentration of an aqueous solution (brine) in which the ice is melted in the melting process (hereinafter, “change rate of solute concentration”). May be abbreviated as “)”, and has a characteristic that the product to be frozen can be frozen efficiently.

Ice slurry is a sherbet-like mixture in which flake ice (solid) obtained by processing hybrid ice into flakes (flakes) is mixed with an aqueous solution (brine) containing a solute at a predetermined ratio, and has a fluidity. Have As a result, the flake ice (solid) can be evenly contacted with the cold insulating material, and the cold insulating material can be rapidly frozen. Further, by adding flake ice to the ice slurry, the composition ratio of flake ice and brine contained in the ice slurry can be easily adjusted.

<Human body cooling device>
The human body cooling device of the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram of a human body cooling device of the present invention, and FIG. 2 is a cross-sectional view of a human body cooling device and its surroundings. Note that, in FIG. 1, (a) shows a configuration in which a heat insulating material is placed over the entire human body cooling device, and (b) shows that the heat insulating material is placed only in an area facing the heart and intestines of the person wearing the human body cooling device. It has a different structure.

The human body cooling device of the present invention is used in the cooling clothes refrigeration system of the present invention described later by freezing the built-in cold insulating agent with ice slurry and properly controlling the body temperature of the wearer in a high temperature environment. It is for. As shown in FIGS. 1(a) and 1(b), it has a structure in which a plurality of plate-shaped cold insulation materials 11 for cooling the wearer's body are incorporated, and the upper half of the wearer's body It may be arranged.

In the present invention, as shown in FIG. 1( a ), the human body cooling device 10 a may have a structure in which the cold insulator 11 is arranged over the entire body, and as shown in FIG. 1( b ). In addition, the human body cooling device 10b in which the cooling material 11 is arranged so as to limit the region to be cooled may be used. In order to efficiently control the body temperature when the body temperature rises, it is effective to cool the heart (the vena cava) and the intestines (veins) in which blood vessels are concentrated, and cool the blood flowing there. Therefore, in the human body cooling device 10b of the present invention, as shown in FIG. 1(b), the cold insulator 11 is concentrated in the region facing the heart (caval vein) and intestine (vein) of the human body cooling device wearer. It is preferable that they are arranged in a uniform manner.

The human body cooling device 10 (hereinafter, referred to as 10 when including both 10a and 10b) of the present invention has a configuration in which a cold insulator 11 is arranged in a region facing a cooling target, for example, a heart (caval vein) and an intestine (vein). It is not particularly limited as long as it is, but it is preferable that the wearer wears the human body cooling device 10 in the best style in order to easily move the human body cooling device 10 and to easily attach and detach the human body cooling device 10.

Further, the human body cooling device 10b of the present invention has a configuration in which the cold insulating material 11 is intensively arranged in a region facing the wearer's heart (caval vein) and intestine (vein), but one of the shaded areas is shown. A tank top style in which the shoulder portion is removed and only one shoulder portion (only the left side) may be used. According to such an aspect, the wearer is more likely to move and whisper.

To summarize the above, the human body cooling device 10 of the present invention does not have a portion facing the wearer's neck but has at least one shoulder rest region, and at least in a region facing the heart (caval vein) and the intestine (vein). It suffices to have a structure in which the cold insulating material 11 is arranged.

Further, in the human body cooling device 10 of the present invention, it is preferable that the cold insulator 11 is kept close to the object to be cooled even when the wearer moves the body. For example, it is preferable that the region of the human body cooling device 10 of the present invention facing the object to be cooled is made of a material having elasticity. According to such an aspect, even if the wearer moves the body, the cold insulating material 11 can always be brought close to the cooling target to continue cooling the cooling target.

As shown in FIG. 2, the cold insulating material 11 incorporated in the human body cooling device of the present invention encloses the cold insulating agent 22 in a sealed state between the two resin sheets 21 having flexibility even during freezing. From the viewpoints of handleability and wearability, it is preferable that they are It is preferable that the cold-retaining agent is a salt brine having a predetermined solute concentration. As shown in FIG. 2, the cold insulating material 11 is used in a state where it is arranged between the outer cloth 24 and the inner cloth 25 of the human body cooling device via the heat insulating materials 23 on both sides.

The cold insulating material 11 in which the cold insulating agent 22 is hermetically sealed between the resin sheets 21 may be configured to be integrally attached to the inside of the human body cooling device, and the human body cooling device 10 may be frozen as it is. In this case, the human body cooling device 10 is composed of an outer cloth 24 in contact with the outside air, a heat insulating material 23, a cold insulating material 11, a heat insulating material 23, and an inner cloth 25 in contact with the wearer's clothes. Here, since the human body cooling device 10 freezes in a human body cooling device freezing tank described later, it is preferable that the human body cooling device 10 is a waterproof type in which brine does not enter from the outer cloth 24, the inner cloth 25, the seams, and the like.

Further, the cold insulating material 11 forms a cooling belt (cooling material structure) 12 in which a plurality of cold insulating materials 11 are connected by a resin sheet 21, and a plurality of such cooling belts 12 are combined as an inner part of a human body cooling device. The human body cooling device main body may be detachably incorporated. That is, the cold insulating material 11 is fitted with the cooling belt 12 in the gap between the outer cloth 24, the heat insulating material 23, the heat insulating material 23, and the heat insulating material 23 having the structure of the inner cloth 25 provided on the human body cooling device 10 and is hooked. Alternatively, a fastener may be used. With such a structure in which the cold insulating material is detachable, only the cooling belt can be frozen in the human body cooling device freezing tank described later, which is preferable from the viewpoint of handleability and space saving. In addition, since the flat plate-shaped cold insulating material 11 is arranged via the heat insulating material 23 inside the outer cloth 24 and the inner cloth 25 of the human body cooling device, while preventing overcooling of the wearer's skin, It is possible to sufficiently secure the time until the cold insulating material is melted. The heat insulating material 23 can appropriately set the thermal conductivity, the thickness, and the like of the material thereof according to the wearer's clothes and the like. In some cases, the heat insulating material 23 can be omitted.

The resin sheet 21 applicable to the present invention is preferably made of a material having flexibility even at a low temperature below the freezing point of the cold insulating agent. Examples of the material of the resin sheet 21 include vinyl chloride and the like. With such a configuration, handling becomes easy even in a frozen state.

Further, the cold insulating agent 22 used in the human body cooling device 10 of the present invention is preferably brine in which salt is dissolved in pure water. Pure water has a specific heat of 4.218 J/(g·K) and a freezing point latent heat of 333.6 kJ/kg, and both the specific heat and the freezing point latent heat are larger than those of other substances, so the brine in which salt is dissolved is frozen. By doing so, a large amount of cold heat can be stored per unit capacity. The freezing point of these cooling agents can be appropriately selected by adjusting the concentration of solute, but is preferably -2°C to -21°C. With such a cooling agent, since the cooling agent is kept near the freezing point for a long time, the temperature inside the human body cooling device can be kept at a comfortable temperature for a long time.

Further, in the human body cooling device of the present invention, a plurality of types of cold insulating agents each having a different freezing point may be combined and dispersed in the human body cooling device 10. According to such an aspect, the temperature inside the human body cooling device can be maintained in stages. For example, when the freezing agents having a freezing point of -21°C, -10°C, and -5°C are used as the cooling agents in the human body cooling device, the wearer feels cool at the first -21°C, and then the cooling capacity is taken into consideration. Then, the temperature can be sequentially shifted to -10°C and -5°C. The cold heat capacity that can be retained increases as the brine concentration of the cold insulating agent decreases. For example, the retained cold heat (latent heat content) in saturated NaCl brine having a brine concentration of 23% as a cold insulator is reduced to 77% (100%-23%) of pure water, whereas NaCl having a brine concentration of 10% is used. The retained cold heat (latent heat content) in the brine is 90% (100%-10%) of pure water.

<Human body cooling device freezer>
Next, the human body cooling device freezing tank in the human body cooling device refrigeration system of the present invention will be described with reference to FIG. FIG. 3 shows an outline of a human body cooling device refrigeration system for cooling a human body cooling device and/or a cooling belt (hereinafter referred to as an object to be frozen) containing a cold insulator, and (a) of the human body cooling device refrigeration system. It is an image figure containing a top view, and (b) is an image figure containing the front view of a human body cooling device refrigeration system. The human body cooling device refrigeration system 30 includes a human body cooling device freezing tank 31, an ice slurry supply unit 32, an ice slurry circulation unit 33, a brine extraction unit 34, and an ice slurry production system 35.

The human body cooling device freezing tank 31 accommodates an object to be frozen (human body cooling device and/or cooling belt) 36 therein, and brings the object to be frozen 36 and the ice slurry S into contact with each other at a predetermined relative speed. Thus, the frozen object 36 is frozen. Specifically, the human body cooling device freezing tank 31 is covered by bringing the frozen object 36 stored in the rack 37 into contact with the ice slurry S flowing inside the human body cooling device freezing tank 31 at a predetermined relative speed. The frozen product 36 is rapidly frozen.

A plurality of, for example, 20 items 36 to be frozen can be stored in the rack 37, and the rack 37 is inserted into the human body cooling device freezing tank 31 with the items 36 to be frozen stored. The rack 37 has a structure for accommodating a plurality of objects to be frozen 36, but this structure may be a structure for accommodating a plurality of objects to be frozen 36 from above, and a plurality of objects to be frozen 36 are laterally arranged. It may be a structure for storing, or may be a structure for stacking a plurality of units storing a plurality of objects to be frozen 36 to form an integrated rack 37.

The ice slurry supply unit 32 supplies the human body cooling device freezer tank 31 with the ice slurry S, and also appropriately replenishes the ice slurry S in accordance with the amount of cold heat of the frozen object 36. Specifically, the ice slurry supply unit 32 supplies the ice slurry S produced by the ice slurry production system 35 described below to the human body cooling device freezer tank 31 via the ice slurry circulation unit 33 described below. If the amount of cold heat of the frozen object 36 with respect to the ice slurry S is large, the additional ice slurry S is additionally replenished.

As described above, the freezing point of the ice slurry S is preferably at least 10° C. or more lower than the freezing point of the frozen object 36, and more preferably 20° C. or more.

When supplying the ice slurry S, the ice slurry supply unit 32 measures the amount of the ice slurry by an ice slurry surface position sensor (not shown) provided in the human body cooling device freezing tank 31, and measures the inside of the human body cooling device freezing tank 31. The amount of the flowing ice slurry S (liquid level height) is adjusted to an appropriate amount. As a result, in the human body cooling device freezing tank 31, the ice slurry S overflows from the human body cooling device freezing tank 31 due to excessive supply of the ice slurry S, and in the human body cooling device freezing tank 31 due to insufficient supply of the ice slurry S. It is possible to prevent a portion where the ice slurry S does not come into contact with the frozen object 36.

The ice slurry circulation unit 33 circulates the ice slurry S in the human body cooling device freezer tank 31. Specifically, the ice slurry circulating unit 33 rotates the screw conveyor 38 to circulate the ice slurry S supplied from the ice slurry supplying unit 32 in the human body cooling device freezing tank 31.

The ice slurry S sent to the human body cooling device freezing tank 31 comes into contact with the frozen object 36 in the human body cooling device freezing tank 31, and then is discharged from the human body cooling device freezing tank 31. Next, the ice slurry circulation unit 33 rotates the screw conveyor 38 to circulate the ice slurry S discharged from the human body cooling device freezing tank 31 into the human body cooling device freezing tank 31 again.

Here, the portion surrounded by the broken line in FIG. 3A shows the inside of the ice slurry circulating unit 33. The part surrounded by the broken line is only a part of the ice slurry circulating unit 33 in FIG. 3A, but the other parts of the ice slurry circulating unit 33 are similar to the part surrounded by the broken line. The screw conveyor 38 may be arranged inside.

The ice slurry circulation unit 33 is provided with a concentration measurement unit (not shown) that measures the concentration (IPF: Ice Packing Factor) of the flake ice in the ice slurry S. The concentration IPF of flake ice is calculated by “IPF=(mass of flake ice)/(mass of flake ice+mass of brine)”.

The flake ice concentration of the ice slurry S is preferably 10% or more and 60% or less. The flake ice production system 35 can maintain the flake ice concentration at a predetermined value (target) by controlling the amount of flake ice produced by a flake ice production device 40 described later. The target of the flake ice concentration may be appropriately selected depending on the type of the frozen object to be frozen. As for the temperature of the ice slurry S, even if flake ice is added (whether cold heat is applied to the ice slurry S) or conversely, the frozen object is frozen (even if the cold heat is removed from the ice slurry S), the ice slurry S Is maintained at the freezing point of the brine that produces the ice slurry, and the concentration of flake ice in the ice slurry S changes due to heat exchange with the ice slurry S. Therefore, by controlling the concentration of the flake ice of the ice slurry S, it is possible to control the transfer cold heat amount of the ice slurry S (that is, the total cold heat amount necessary for freezing the human body cooling device and/or the cooling belt). it can.

Although not shown, the concentration measuring unit is provided with a heater and a thermometer in a substantial bypass pipe having an inlet and an outlet. The concentration measuring unit closes the inlet and the outlet at the time of measurement and collects a sample of the ice slurry S to be measured between the inlet and the outlet. The concentration measuring unit may measure a temperature change of the sample by applying a predetermined amount of heat to the sample with a heater.

That is, since the sample of the ice slurry S maintains the freezing point temperature while the flake ice remains in the sample, the temperature rising timing from the freezing point temperature is related to the flake ice concentration (the amount of heat applied is constant. In this case, the higher the flake ice concentration, the later the temperature rise timing), and the concentration of the ice slurry S can be specified from the temperature change of the sample of the ice slurry S.

The brine extraction unit 34 extracts the brine contained in the ice slurry S discharged from the human body cooling device freezer tank 31 by the ice slurry circulation unit 33, and provides this brine to the ice slurry production system 35.

FIG. 4 is a schematic diagram showing an outline of the flake ice manufacturing system 35. The flake ice manufacturing system 35 includes a brine storage tank 51, a pump 52, a brine pipe 53, a brine tank 54, a flake ice storage tank 55, a refrigerant pipe 48, a freezing point adjusting unit 56, and a flake ice manufacturing device. And 40.

The brine storage tank 51 stores brine, which is a raw material for hybrid ice. The brine stored in the brine storage tank 51 is supplied to the injection unit 43 via the brine pipe 53 by operating the pump 52. The brine supplied to the injection unit 43 serves as a raw material for producing hybrid ice.

The brine tank 54 supplies the brine to the brine storage tank 51 when the amount of brine stored in the brine storage tank 51 becomes low. The brine that has flowed down without freezing on the inner peripheral surface of the inner cylinder is stored in the brine storage tank 51, and is supplied to the injection unit 43 via the brine pipe 53 again by operating the pump 52.

The flake ice storage tank 55 is arranged immediately below the flake ice manufacturing apparatus 40, and stores the flake ice dropped from the flake ice discharge port of the flake ice manufacturing apparatus 40.

The concentration of flake ice in the ice slurry S in the flake ice storage tank 55 is similarly measured by a concentration measuring unit (not shown) provided in the flake ice storage tank 55, and is fed back to the operation of the flake ice manufacturing apparatus 40. As a result, the concentration is controlled to a predetermined concentration IPF.

The freezing point adjusting unit 56 adjusts the freezing point of the brine supplied from the brine tank 54 to the brine storage tank 51. For example, brine varies depending on the density. Therefore, the freezing point adjustment unit 56 adjusts the concentration of the brine stored in the brine storage tank 51.

Next, the operation of the flake ice making system 35 including the flake ice making device 40 having the above configuration will be described.

First, the refrigerant supply unit 47 supplies the refrigerant to the refrigerant clearance 45 and sets the temperature of the inner peripheral surface of the inner cylinder to be about -10°C lower than the freezing point of the brine injected by the injection unit. Thereby, the brine attached to the inner peripheral surface of the inner cylinder can be frozen.

When the inner peripheral surface of the inner cylinder is cooled, the pump 52 supplies brine from the brine storage tank 51 to the injection unit 43 via the brine pipe 53. When the brine is supplied to the injection unit 43, the injection unit 43 injects the brine toward the inner peripheral surface of the inner cylinder. When the brine sprayed from the spraying unit 43 comes into contact with the inner peripheral surface of the inner cylinder, the brine is instantly frozen and becomes hybrid ice immediately before it is allowed to separate into salt which is a solute and water which is a solvent. In this way, hybrid ice is produced.

Since hybrid ice is ice obtained by freezing brine, it has a feature that the elution rate of solute during the melting process is small. Specifically, the rate of change in the solute concentration of the aqueous solution in which the hybrid ice has melted during the process of melting the hybrid ice is 30%. Here, the "rate of change in the solute concentration of the aqueous solution in which the hybrid ice is melted during the melting process" means the ratio of the concentration of the aqueous solution at the completion of melting to the solute concentration in the aqueous solution melted at any timing during the melting process. .. The “solute concentration” means the mass ratio of the solute dissolved in the aqueous solution.

The hybrid ice generated on the inner peripheral surface of the inner cylinder is peeled off by a peeling unit (scraper) rotating inside the inner cylinder. The hybrid ice stripped off by the stripping unit falls as flake ice from the flake ice discharge port. The flake ice dropped from the flake ice discharge port is stored in the flake ice storage tank 55 arranged immediately below the flake ice manufacturing apparatus 40.

Further, as described above, the brine that has flowed down the inner peripheral surface of the inner cylinder without being frozen and becoming hybrid ice is stored in the brine storage tank 51, and by operating the pump 52, the brine is injected through the brine pipe 53. It is supplied again to 43. When the amount of brine in the brine storage tank 51 is reduced, the brine is supplied from the brine tank 54 to the brine storage tank 51.

The ice slurry is produced by a flake ice making system including a flake ice making device 40. That is, the flake ice dropped from the flake ice discharge port of the flake ice manufacturing apparatus 40 is stored in the flake ice storage tank 55, and brine is mixed in the flake ice storage tank 55 to produce an ice slurry. ..

<System>
A method of using the human body cooling device refrigeration system of the present invention will be described. FIG. 5 is a conceptual diagram showing another embodiment of the human body cooling device refrigeration system of the present invention, and an image diagram showing an appearance of the human body cooling device refrigeration system. As shown in FIG. 5, the human body cooling device refrigeration system 30 of the present invention stores a rack 37, to which a plurality of human body cooling devices 10 or refrigeration belts (not shown) are fixed, in a human body cooling device freezing tank 31 to form an ice slurry. This is a configuration in which the ice slurry supplied from the manufacturing system 35 is circulated in the human body cooling device freezing tank 31 via the ice slurry circulating unit 33. The human body cooling device freezer tank 31 is provided with a lid (not shown), and by closing the human body cooling device 10 when freezing it, cold heat can be prevented from escaping. The human body cooling device freezing tank 31 in the human body cooling device freezing system 30 can be made small (refrigerator size) with a capacity of about 150 to 300 L. With such a configuration, it is possible to cool 40 to 100 pieces of the cooling work clothes or the cooling belt at a time, while having a small size of about 150 to 300 L.

In addition, in order to operate the human body cooling device cooling system of the present invention, the human body cooling device 10 and/or the human body cooling device 10 containing a cooling material are included every time the human body cooling device holds the cooling capacity (for example, 45 minutes). The cooling belt (cooling material structure) in the cooling device is replaced. That is, since it is necessary to freeze the replacement human body cooling device 10 or the cooling belt of the human body cooling device 10 while using the human body cooling device 10, the human body cooling device 10 or the cooling belt of at least twice the number of users is required. You have to have it ready. Therefore, the human body cooling device refrigeration system of the present invention prepares the human body cooling device 10 or the cooling belt for at least 40 to 100 times the number of human body cooling devices 10 in order to cool the environment inside the work clothes for 20 to 50 people, for example. It is necessary.

The number of human body cooling devices 10 or cooling belts should be prepared with sufficient margin because the time during which the human body cooling devices 10 or cooling belts retain their cooling capacity varies depending on the environmental temperature and work load. Is. Further, the human body cooling device 10 or the cooling belt used in the human body cooling device refrigeration system of the present invention may be provided with a timer for notifying the replacement time, a sensor for indicating a melting state, or the like.

Further, in the human body cooling device refrigeration system of the present invention, not all of them are replaced at the same time, but the human body cooling device 10 or the cooling belt is efficiently replaced by shifting the replacement time as, for example, several team formations. be able to.

Each human body cooling device may be provided with a sensor for collecting vital signs (body temperature, blood pressure, heart rate, respiratory rate, etc.) of the wearer. These pieces of information are transmitted to a management server (not shown) on site, and the management server analyzes the vital information of each wearer and instructs the wearer to replace the human body cooling device, interrupt work, etc. Can be sent. By using a vital sensor, it is possible to manage each wearer. The management server may be integrated with the human body cooling device refrigeration system.

In the human body cooling device refrigeration system of the present invention, as compared with the refrigeration technology using a low temperature air flow such as air blast, the thermal conductivity of the ice slurry is significantly higher than the thermal conductivity of air, and thus the human body cooling device or The freezing time of the cooling belt can be significantly reduced. That is, in the refrigeration technique using low temperature compressed air such as air blast, the refrigeration time is 10 to 30 hours, whereas the refrigeration system of the present invention requires a refrigeration time of about 30 minutes.

Further, the apparatus size of the human body cooling device refrigeration system of the present invention can be remarkably downsized as compared with the air blast type apparatus size for refrigerating the same object to be frozen. According to the human body cooling device refrigeration system of the present invention, for example, the human body cooling device 10 or the cooling belt (for 40 to 100 pieces) twice per person at the site of 20 to 50 persons can be provided in one refrigerator-sized system. You can freeze them all at once.

If it is assumed that the human body cooling device equivalent to the present invention is frozen by a refrigerating technique such as air blast in the field of 20 to 50 persons, 10 to 30 hours are required for refrigerating by a refrigerating technique such as air blast. It is necessary to prepare about 8 to 10 body cooling devices per person and freeze them beforehand. A refrigerating apparatus using a refrigerating technique such as air blast is significantly larger than the apparatus size of the human body cooling device of the present invention for refrigerating the same object to be frozen, and more human body cooling devices to be frozen per person are further added. Larger device size. Since it is impossible to place such a large apparatus at each site, if the human body cooling device of the present invention were actually operated, the human body cooling device would be collectively frozen in a freezing factory. Further, in this case, it is necessary to transport the human body cooling devices that have been frozen together in a freezing factory to each site, and also a cool box for freezing and storing the human body cooling devices at each site.

According to the human body cooling device refrigeration system of the present invention, as described above, for example, at the site of 20 to 50 persons, the human body cooling device 10 or the cooling belt of 2 persons (3 persons including the spare) per person is provided. It suffices to prepare them, and it is possible to put a system (apparatus) at each site and operate the completed human body cooling device at each site. As a result, the human body cooling device 10 or the cooling belt need not be transported to each site, and a cold storage for freezing storage is not required, so that the number of personnel and cost can be significantly reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the above-described embodiments at all, and other conceivable modifications are possible within the scope of the matters described in the claims. It also includes the embodiment and the modified examples. Further, various modifications and combinations of the above-described embodiments may be made without departing from the scope of the present invention.

In summary, the human body cooling device to which the present invention is applied is
A human body cooling device 10 having a plurality of cold insulators 11 for cooling the wearer's body,
The cold insulating material 11 is obtained by enclosing a cold insulating material 22 in a flat plate shape between two flexible resin sheets 21, and insulates between the outer cloth 24 and the inner cloth 25 of the human body cooling device. It is arranged via the material 23.

Since this human body cooling device has a cooling agent enclosed between flexible resin sheets, it is easy to handle even in a frozen state, and since the cooling agent is arranged through a heat insulating material, it is worn by the wearer. It is possible to prevent overcooling of the skin and to secure a sufficient cooling time.

In the human body cooling device to which the present invention is applied,
The cold insulating material 11 is formed as a cooling belt in which a plurality of the cold insulating materials 11 are connected by the resin sheet 21, and the cooling belt is detachably incorporated from the human body cooling device 10.

By using a detachable cooling belt, this human body cooling device can cool only the cooling belt without freezing the entire human body cooling device, and can effectively freeze the cold insulating material.

In the human body cooling device to which the present invention is applied,
The cold-retaining agent is brine in which salt is dissolved in water or brine containing an antifreeze solution.

This human body cooling device can exert a cooling effect efficiently and for a long time by using a brine in which salt is dissolved in water or a brine containing an antifreezing liquid as a cold insulating agent.

In the human body cooling device to which the present invention is applied,
The cold insulating material 11 has a plurality of types of cold insulating agents 22 each having a different freezing point dispersedly arranged in the human body cooling device 10.

This human body cooling device can hold the temperature inside the human body cooling device stepwise by using a plurality of types of cold insulating materials having different melting temperatures.

In the human body cooling device to which the present invention is applied,
The cold insulator 11 is arranged in a region facing the heart and/or intestine of the wearer of the human body cooling device 10.

This human body cooling device can improve the cooling efficiency by disposing a cold insulator near the wearer's heart or intestine.

In the human body cooling device refrigeration system to which the present invention is applied,
An ice slurry raw material production section that produces flake ice from a part of the supplied brine and cools the remaining part of the supplied brine.
A flake ice storage tank for storing the ice slurry in which the flake ice generated by the ice slurry raw material manufacturing unit and the cooled brine are supplied, and the flake ice and the cooled brine are mixed,
There is a space inside which a human body cooling device containing a plurality of cold insulation materials containing a cooling agent and/or a cooling belt for connecting a plurality of cold insulation materials containing a cooling agent can be housed inside the human body cooling device. A human body cooling device that stores the ice slurry supplied from the flake ice storage tank in the space, circulates the stored ice slurry in the space, and freezes the human body cooling device and/or the cooling belt A tank,
Equipped with
The freezing point of the brine is lower than the freezing point of the cold insulating agent.

This human body cooling device refrigeration system, in the ice slurry raw material production section, flake ice is produced from a part of the brine, the rest of the brine is cooled, and the flake ice and the brine are stored in the water storage tank, In the human body cooling device freezer tank, which manufactures ice slurry and has a cooling belt for accommodating a plurality of human body cooling devices and/or a plurality of cold insulation materials connected to the human body cooling device, which is stored therein, By storing and circulating this ice slurry, a plurality of human body cooling devices and/or cooling belts can be frozen.

In the human body cooling device refrigeration system to which the present invention is applied,
The flake ice storage tank freezes the ice slurry according to a total amount of cold heat required to freeze the human body cooling device and/or the cooling belt stored in the human body cooling device freezing tank. Add to tank.

This human body cooling device refrigeration system can replenish the human body cooling device freezing tank with ice slurry from the flake ice storage tank according to the total amount of cold heat required to freeze the human body cooling device and/or the cooling belt.

In the human body cooling device refrigeration system to which the present invention is applied,
The human body cooling device freezer includes a rack that houses the human body cooling device and/or the cooling belt therein.

This human body cooling device refrigeration system can freeze a plurality of human body cooling devices and/or cooling belts at once by providing a rack in the human body cooling device freezing tank.

10, 10a, 10b... Human body cooling device, 11... Cooling material, 12... Cooling belt, 21... Resin sheet, 22... Cooling agent, 23... Insulating material, 24... Outer cloth, 25... Inner cloth, 30... Human body cooling device Refrigeration system, 31... Human body cooling device freezing tank, 32... Ice slurry supply section, 33... Ice slurry circulation section, 34... Brine extraction section, 35... Ice slurry production system, 36... Frozen object, 37... Rack, 38... Screw conveyor, 40... Flake ice manufacturing apparatus, 41... Drum, 42... Rotating shaft, 43... Injection section, 44... Rotary joint, 45... Refrigerant clearance, 46... Rotation control section, 47... Refrigerant supply section, 48... Refrigerant piping , 51... Brine storage tank, 52... Pump, 53... Brine piping, 54... Brine tank, 55... Flake ice storage tank, 56... Freezing point adjusting section.

Claims (8)

A human body cooling device having a plurality of cold insulators for cooling the wearer's body,
The cold insulating material is obtained by enclosing a cold insulating material in a flat plate shape between two flexible resin sheets, and is arranged between an outer cloth and an inner cloth of the human body cooling device via a heat insulating material. Will be
A human body cooling device characterized in that The cold insulating material is formed as a cooling belt in which a plurality of the cold insulating materials are connected by the resin sheet, and the cooling belt is detachably incorporated from the human body cooling device,
The human body cooling device according to claim 1, wherein: The ice pack is brine in which salt is dissolved in water or brine containing an antifreeze liquid,
The human body cooling device according to claim 1 or 2, characterized in that. The cold insulating material, a plurality of types of cold insulating agents each having a different freezing point are dispersed and arranged in the human body cooling device,
The human body cooling device according to any one of claims 1 to 3, wherein The cold insulator is arranged in a region facing the heart and/or intestine of the wearer of the human body cooling device,
The human body cooling device according to any one of claims 1 to 4, wherein: An ice slurry raw material production section that produces flake ice from a part of the supplied brine and cools the remaining part of the supplied brine.
A flake ice storage tank for storing the ice slurry in which the flake ice generated by the ice slurry raw material manufacturing unit and the cooled brine are supplied, and the flake ice and the cooled brine are mixed,
There is a space inside which a human body cooling device containing a plurality of cold insulation materials containing a cooling agent and/or a cooling belt for connecting a plurality of cold insulation materials containing a cooling agent can be housed inside the human body cooling device. A human body cooling device that stores the ice slurry supplied from the flake ice storage tank in the space, circulates the stored ice slurry in the space, and freezes the human body cooling device and/or the cooling belt A tank,
Equipped with
The freezing point of the brine is lower than the freezing point of the cold insulator,
A human body cooling device refrigeration system characterized by the above. The flake ice storage tank freezes the ice slurry according to a total amount of cold heat required to freeze the human body cooling device and/or the cooling belt stored in the human body cooling device freezing tank. Replenish the tank,
The human body cooling device refrigeration system according to claim 6, wherein. The human body cooling device freezer includes a rack that houses the human body cooling device and/or the cooling belt therein.
The human body cooling device refrigeration system according to claim 6 or 7, wherein.

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