JPH06127488A - Cooling clothes - Google Patents

Abstract

PURPOSE:To provide cooling clothes to provide sufficient cooling capacity and regulate a cooling amount. CONSTITUTION:The tubular vaporizer 4a of a freezer 4 is attached along the clothes surface of cooling clothes 1. The vaporizing parts 5b of heat pipes 5 each having a condensing part 5a thermally transferably mounted on the tubular vaporizer 4a are extended along or sewn in the cloth of the clothes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling garment used by aircraft pilots, workers in high temperature environments and the like.

[0002]

2. Description of the Related Art For example, an airplane pilot is extremely nervous while operating an airplane in a narrow cockpit, and therefore, his body temperature rises to cause sweating, which makes him uncomfortable during operation. There was a problem that it would end up. Therefore, various cooling suits have been developed for such pilots in order to adjust the body temperature.

For example, as a representative of this cooling garment, there are a ventilation type garment and a cooling garment equipped with a water cooling mechanism.
The ventilation type cooling clothes ventilate the clothes by cooling air and cool the clothes by evaporating the cooling air and sweat. Further, a cooling garment provided with a water cooling mechanism is one in which a thin water cooling pipe is attached to clothes and cooling water is passed through the water cooling pipe for cooling.

[0004]

However, in the ventilation type cooling clothes, sweating is required to cool the clothes, so that there is an inconvenience that a sweater feels fatigue due to sweating. In addition, a cooling garment equipped with a water cooling mechanism needs to be provided with a thin and long water cooling pipe, which causes the weight of the cooling garment to be increased and it is necessary to circulate the cooling water in the water cooling pipe, so that the pressure loss of the cooling water is lost. However, there is a problem in that the pump for cooling water is increased in size. Furthermore, in cooling clothes equipped with a water cooling mechanism,
Since the temperature of the cooling water changes along the longitudinal direction of the water cooling pipe, uniform cooling cannot be performed, and especially the temperature of the cooling water at the inlet side becomes too low and the outlet side becomes insufficiently cooled. There was an inconvenience of giving discomfort.

The cooling garment for persons working in a high temperature environment has the same disadvantages as the pilot cooling garment described above.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cooling garment which is excellent in cooling capacity and is capable of comfortable cooling, and is thin and lightweight. To do.

[0007]

In order to achieve the above-mentioned object, the present invention provides a cooling garment having a cooling function of removing heat from a wearer and radiating the heat to the outside, in which a compressor, a condenser and an expansion valve are provided. A refrigerator having a tubular evaporator, the tubular evaporator being attached along a cloth surface of a clothing part to perform a refrigeration cycle, and heat transfer of each condensing part to the evaporator of the refrigerator. It is characterized in that it has a plurality of heat pipes which are attached and each evaporation part extends from the evaporator to each part of the clothes part.

[0008]

In the cooling garment constructed as described above, the evaporating portions on the tip side of the plurality of heat pipes attached to the tubular evaporator of the refrigerator so as to be capable of transferring heat extend to the respective portions of the clothing portion and the cloth surface. Installed on. Therefore, by heating the tip end side of each heat pipe at body temperature, the working fluid in each heat pipe evaporates, and when this vapor moves to the base end side that becomes the condensation part, heat is transferred in the latent heat state. The heat is transferred to the tubular evaporator to which the base end side is attached, the working fluid in the heat pipe is deprived of heat and condensed, and returns to the liquid phase to be refluxed to the evaporator. Therefore, each heat pipe transfers a large amount of heat in a latent heat state and radiates heat to the outside through the refrigerator, thereby efficiently cooling the body of the wearer.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

1 and 2 show a first embodiment of a cooling garment according to the present invention. A vest type cooling garment 1 is used as underwear for pilots of an aircraft, and is made of ordinary cloth. Front body 2 and back body 3 that are composed
The surface of the tube has a tubular evaporator 4a, a compressor 4b, and a condenser 4
c and the expansion valve 4d are connected by a pipe line to form a closed loop, and the tubular evaporator 4a portion of the refrigerator 4 in which, for example, a chlorofluorocarbon refrigerant is sealed is disposed inside.

The tubular evaporator 4a is arranged along the upper edge of the front body 2 of the cooling garment 1, continues to the rear body 3 via the lower part of the left sleeve, and is arranged along the upper edge of the rear body 3. It is installed, descends the right side from the upper part of the rear body 3 and is connected to the compressor 4b near the right hem, the condenser 4c is connected to the downstream side of the compressor 4b, and the expansion valve 4d is further downstream. And communicates with the tubular evaporator 4a.

Further, a large number of heat pipes 5 in which a condensable working fluid is enclosed are attached to the tubular evaporator 4a so that their cylindrical condensing portions 5a can be exchanged with each other. The evaporating portion 5b on the front end side of 5 extends from the tubular evaporator 4a to each portion along the surface of the fabric or so as to sew the fabric.

Reference numeral 6 in FIG. 1 denotes a fan of the condenser 5.

Next, the operation of this embodiment configured as described above will be described.

The pilot wears this vest type cooling suit 1 directly on the bare skin as underwear, and wears a predetermined flight suit having a heat insulating property. In this case, a section of the pipeline of the refrigerator 4 in which the compressor 4b, the condenser 4c, and the expansion valve 4d are provided, that is, a portion other than the tubular evaporator 4a is exposed outward from the vicinity of the waist of the pilot. And then
Further, it may be configured to be separable if necessary. Next, the pilot, after entering the cockpit of the aircraft and arriving at the cockpit, connects the refrigerator 4 to the power source, turns on the switch, and starts the refrigeration cycle.

On the other hand, the plurality of heat pipes 5 in which the condenser portion 5a is attached to the tubular evaporator 4a are closely arranged on the upper body such as the chest and the back of the pilot who is wearing them, so that the heat is good. The working fluid in the evaporation unit 5b is heated to the body temperature and boiled to become the vapor of the working fluid.
Move to a. At this time, the vapor of the working fluid transfers heat in a latent heat state, contacts the tubular evaporator 4a of the refrigerator 4 provided so as to penetrate through the center of the cylindrical condensing portion 5a, and is deprived of heat. The working fluid condensed and returned to the liquid phase is returned to the evaporation section 5b by the capillary action of the wick.

On the other hand, in the refrigerator 4 which carries out the refrigeration cycle, when the refrigerant whose temperature is lowered due to adiabatic expansion by the expansion valve 4d flows in the tubular evaporator 4a, it is attached to the outer periphery of the evaporator 4a. Each of the heat pipes 5 absorbs heat from the condensing part 5a and flows down while increasing the temperature. Then, after being compressed in the compressor 4b to rise in temperature and then radiating heat in the condenser 4c to lower the temperature, when passing through the expansion valve 4d, it is adiabatically expanded again to a low temperature, and this refrigeration cycle is repeated. To do.

Therefore, when the pilot is extremely nervous while taking off and the body temperature rises, the evaporation part 5b of the heat pipe 5 attached to each part of the cooling suit 1 absorbs the heat generated from the body of the pilot and the condensing part. Heat transfer to 5a,
In the condensing part 5a, heat is exchanged with the tubular evaporator 4a of the refrigerator 4 and the refrigerator 4c of the refrigerator 4 is used.
As it is carried to the outside and released to the outside, the pilot can comfortably operate the aircraft.

As described above, the cooling garment 1 employs the refrigerator 4 and a large number of heat pipes 5, so that a large amount of heat can be transported at a time as compared with the conventional cooling garment using water or cold air as a heat medium. In addition to being able to be performed, it is possible to reduce the diameter of the pipe material and to reduce the weight of the cooling garment 1. Further, the temperature difference does not occur due to the soaking effect of the heat pipe 5, and the clothes are not made uncomfortable due to the temperature difference.

The amount of cooling by the cooling suit 1 can be adjusted, for example, by controlling the rotation of the fan 6 of the condenser 4c of the refrigerator 4, but a variable conductance heat pipe is used as the heat pipe 5. For example, the amount of heat transport can be automatically adjusted according to changes in body temperature.

That is, each heat pipe 5 having a condenser 5a attached to a tubular evaporator 4a of a refrigerator 4 is of a variable conductance type in which a small amount of non-condensable gas is enclosed together with a condensable working fluid. Use a heat pipe. As a result, the non-condensable gas that collects on the side of the condensing unit 5a occupies a large volume without being compressed in the condensing unit because the vapor pressure of the working fluid is low when the body temperature of the pilot is low. As a result, the effective area of the condenser 5a where heat is exchanged with the refrigerator 4 is narrowed, the amount of condensation of the vapor-phase working fluid is reduced, and the amount of heat transport by the heat pipe 5 is suppressed.

Further, when the pilot's body temperature rises violently, the evaporation of the working fluid is activated and the vapor pressure in the heat pipe rises, so that the non-condensable gas is compressed and its volume is reduced. The effective area is increased, and the amount of condensation of the vapor-phase working fluid is increased. As a result, the amount of heat transported by the heat pipe 5 increases and the cooling capacity increases.
Therefore, in this heat pipe 5, the amount of cooling is automatically adjusted by transferring heat to the refrigerator 4 side in an amount commensurate with the increase in body temperature, and it is possible to prevent insufficient cooling or supercooling.

FIG. 3 shows a cooling garment 11 according to a second embodiment of the present invention, in which a loop type heat pipe 15 is used instead of each heat pipe 5 in the first embodiment. By using the loop heat pipe 15 as compared with the embodiment, the liquid return path 15a of the working fluid is obtained.
Since the steam flow path 15b is separated from the steam flow path 15b, the scattering limit is eliminated, and as a result, the amount of heat transport is significantly increased as compared with the case of a non-separable heat pipe.

In both of the above embodiments, as the cooling suit, the best type cooling suit 1, 11 for an aircraft pilot is used.
However, it is needless to say that not only the vest type cooling clothes but also jacket type, pants or the like may be used.
Also, its application is not limited to pilots, but also as heat-resistant clothes and fire-resistant clothes for workers who work in high temperature environments such as workers in blast furnaces, casting workers and fire pipes, or racing cars and Racing suits for racers such as motorcycles, work clothes for occupations such as doctors who do not want to sweat during surgery, protective clothing for pesticide sprayers, and outer world such as divers and astronauts. The present invention can also be suitably applied to equipment or the like for a person who breaks contact.

[0025]

As described above, the cooling garment of the present invention comprises the compressor, the condenser, the expansion valve, and the tubular evaporator.
A refrigerator in which the tubular evaporator is attached along a cloth surface of a clothing part to perform a refrigeration cycle, and a condenser is attached to the evaporator of the refrigerator in a heat transferable manner, and each evaporator is Since it has a plurality of heat pipes extending from the evaporator to each part of this clothing part, it can be cooled uniformly by the heat pipe characteristics, and sufficient cooling capacity for cooling the heat absorbed by the heat pipes by the refrigerator. It is possible to adjust the cooling amount arbitrarily.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cooling garment according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing a mounted state of the heat pipe in the first embodiment.

FIG. 3 is a perspective view showing a cooling garment according to a second embodiment of the present invention.

[Explanation of symbols]

1 ... Cooling clothes, 4 ... Refrigerator, 4a ... Tubular evaporator,
4b ... compressor, 4c ... condenser, 4d ... expansion valve, 5
... Heat pipe, 5a ... Condensing part, 5b ... Evaporating part,
15 ... Loop type heat pipe, 15a ... Liquid reflux path,
15b ... Steam flow path.

Front page continued (72) Inventor Koichi Masuko 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Masahiko Ito 1-1-5 Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Fumiaki Aoyama 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Stock Company

Claims (1)

[Claims] 1. A cooling garment having a cooling function of removing heat from a wearer and radiating the heat to the outside, comprising a compressor, a condenser, an expansion valve and a tubular evaporator, wherein the tubular evaporator is a clothing part. A refrigerator attached along the cloth surface to perform a refrigeration cycle, and each condenser section is attached to the evaporator of the refrigerator so that heat can be transferred, and each evaporator section is attached to each part of the clothes section from the evaporator. A cooling garment having a plurality of heat pipes extended.