JPH0692295A - Cooling costume - Google Patents

Abstract

PURPOSE:To provide a cooling costume enabling comfortable cooling. CONSTITUTION:A cooling costume is provided with a pump 26 for delivering an operating fluid, held up in the condensing part 24 of a loop type heat pipe 20 filled with the operating fluid, in the direction of an evaporting part 23; a liquid tube part 21 the inside of which the liquid-phase operating fluid delivered from the pump 26 flows through; plural evaporating tubes 23a branching off from plural places of the liquid tube part 21 so as to be woven in or sewed on a clothes part 1; and an evaporating tube part 22 to which the respective terminal parts of plural evaporating tubes 23a are connected in the communicated state and also the inside of which vapor flows through toward the condensing part 24.

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, a pilot of an aircraft is extremely nervous during a flight in a narrow cockpit, which causes a rise in body temperature and perspiration, which causes discomfort during the flight and causes the patient to feel unwell after landing. was there. For this reason,
For such pilots, various cooling suits have been developed for adjusting body temperature.

Further, as a typical one of the cooling clothes,
There are ventilation type cooling clothes and cooling clothes 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 suit which has an excellent cooling effect and which can be comfortably worn.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention encloses a working fluid that transfers heat as latent heat in a cooling garment having a cooling function of removing heat from a wearer and radiating the heat to the outside. A pump that sends out the working fluid condensed in the condensing part of the loop type heat pipe toward the evaporating part,
A liquid pipe portion through which a liquid-phase working fluid delivered from this pump flows, a plurality of evaporation pipes branched from this liquid pipe portion and woven or attached to a clothes portion, and ends of these evaporation pipes. The parts are connected to each other and have a steam pipe part through which steam flows toward the condensing part.

Further, the condensing part of the loop heat pipe may be detachably attached to a cooling means of a system different from the loop heat pipe.

[0009]

The liquid-phase working fluid condensed in the condensing portion of the forced circulation loop heat pipe is sent to the liquid pipe portion by the pump and flows into the evaporation pipes branched from the liquid pipe portion. Since the plurality of evaporation pipes are woven or attached to the clothing portion of the cooling clothes, the working fluid flowing into each of the evaporation pipes is heated by the body temperature of the wearer to evaporate and become the working fluid vapor. After moving to the steam pipes and merging, they are deprived of heat in the condenser and returned to the liquid-phase working fluid.

Further, if the condensing part is attached to the cooling means of another system so as to transfer heat and is detachable, the condensing part of the loop heat pipe is effectively cooled and the cooling capacity of the cooling suit is improved. Further, by making it detachable, the cooling means can be fixed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of a cooling system for a cooling garment used as underwear for an aircraft pilot. The cooling garment includes a garment section 1 made of, for example, polyester cloth, and heat around the garment section 1. The cooling mechanism 2 absorbs and discharges it to the outside. The back side of the garment part 1 is shown in FIG. 1, and the front side is shown in FIG.

The garment portion 1 of this embodiment is of a vest type and has a body portion 10, a shoulder portion 11, a sleeve portion 12 for passing arms and shoulders, and a neckline portion 13 for passing a head and a neck. The body 10 is composed of a front body 10a and a back body 10b, which is divided into two parts at the center of the front body 10a, and a zipper 14 is provided in the vertical direction so that it can be opened and closed for easy attachment and detachment.

The cooling mechanism 2 comprises a loop heat pipe 20 and a refrigerator 30 as a fixed cooling means for cooling the condensation part of the loop heat pipe 20. This loop type heat pipe 20 has a liquid pipe portion 2
1, a steam pipe portion 22, an evaporation portion 23, a condenser portion 24, and a pump unit 25 provided in the liquid pipe portion 21, which is a forced circulation type loop heat pipe. In addition, the condensing section 24 of the loop heat pipe 20
The refrigerator 30 for cooling the compressor includes a compressor 31 and a condenser 3
2, an expansion valve 33, an evaporator 34 and a connecting pipe 35.

The liquid pipe portion 21 of the heat pipe 20 is, for example, a copper pipe or an aluminum pipe having high thermal conductivity and flexibility, and the thickness thereof is preferably 6 mm in outer diameter and 5 mm in inner diameter. Similarly, for the steam pipe portion 22, for example, a copper pipe or an aluminum pipe having an outer diameter of 9 mm and an inner diameter of 8 mm is suitable. Then, the liquid pipe portion 21 and the steam pipe portion 22 are vertically arranged at the center of the rear body (back surface) 10b of the body portion 10 in the vertical direction.
They are arranged side by side and sewn with threads or the like.

The evaporating portion 23 that connects the liquid pipe portion 21 and the vapor pipe portion 22 is composed of a plurality of thin evaporating pipes 23a made of an aluminum pipe having an outer diameter of 3 mm and an inner diameter of about 2.7 mm. , Each evaporation pipe 23a is sewn with a thread 29 or the like as shown in FIG. 3 so as to branch from the liquid pipe portion 21 at a predetermined pitch (for example, at an interval of 5 mm) and pass through each portion of the clothing portion 1. , Or is woven directly into the cloth and is provided so as to come into direct or near-contact with the skin H of the wearer.

Half of these evaporation tubes 24a are formed in a zigzag shape at a predetermined pitch from the bottom half of the back body 10b to the left half of the front body 10a divided by the zipper 14. After reciprocating several times, it is connected to the steam pipe portion 22 of the rear body 10b. Similarly,
The remaining half of the evaporation tubes 23a are reciprocated in a zigzag form at a predetermined pitch from bottom to top in the range from the right half of the back body 10b to the right half of the front body 10a divided by the zipper 14. , Is connected in communication with the steam pipe portion 22 of the rear body 10b. In this way, the evaporation tube 23a is arranged on almost the entire vest type clothing portion 1.

The other ends of the liquid pipe portion 21 and the steam pipe portion 22 of the heat pipe 20 extending from the body side of the garment portion 1 are flexible pipes and extend for a predetermined length. It is connected to the condenser 24. Also, the condensing section 2
4, the inner pipe 24a and the outer pipe 24a are covered by covering a plurality of inner pipes 24a, 24a ... whose upper and lower ends are open with outer pipes 24b, 24b. While forming a cooling gap 24c between 24b,
At the lower part of the outer pipe 24b, the cooling gap 24 of each outer pipe 24b is formed.
There is a gap communication portion 24d that communicates with c, and a similar inner pipe communication portion 24e is provided below the inner pipe 24a. The condensing part 24 has a steam pipe part 22 in the inner pipe communicating part 24e.
And the liquid pipe portion 21 is connected to the gap communication portion 24d, and the entire upper side thereof is mounted in the evaporator 34 of the refrigerator 30 in a heat exchangeable and easily removable state.

Therefore, from the steam pipe portion 22 to the condenser portion 24
The working fluid vapor that has entered the inner pipe communicating portion 24e of the refrigerator rises in the plurality of inner pipes 24a, 24a ... And then descends through the cooling gap portions 24c.
Is cooled by the evaporator 34 and contacts the inner surface of the outer tube 24c to condense, returns to the liquid phase and flows down, and the clearance communicating portion 24d
It is supposed to accumulate in.

The pump unit 25 includes a circulation pump 26 for the working fluid of the heat pipe 20, a check valve 27,
The liquid flow control valve 28 and the liquid flow control valve 28 are attached to the liquid pipe section 21 near the clothes section 1. The pump unit 25 and the refrigerator 3 are provided on one side of the pump unit 25.
A control unit 40 for controlling 0 is attached.

The refrigerator 30 uses a vapor refrigerant as a compressor 31.
Adiabatic compression by the condenser 32, heat by the condenser 32 to the outside to condense and liquefy the high-pressure vapor-like refrigerant, the expansion valve 33 for adiabatic expansion of the liquid refrigerant, and the evaporator 34 from the outside. Of the refrigeration cycle including the process of absorbing the heat of the air and evaporating the refrigerant, and all of its components are attached to the lower part of the cockpit 41 in the cockpit of the aircraft as shown in FIG. . In FIG. 1, reference numeral 32a is a cooling fan of the condenser 32, and in FIG. 3, reference numeral W is a flight suit worn on the clothing portion 1 of the cooling suit.

Next, the operation of this embodiment configured as described above will be described. The aircraft pilot wears the clothing part 1 of the cooling suit so as to directly touch the skin, and wears a predetermined flight suit W having cold and water resistance on it. In this case, the liquid pipe portion 2 extending from the clothes portion 1 of the heat pipe 20.
The pump unit 25 and the control unit 40 are positioned in the vicinity of the lumbar region while the 1 and the steam pipe 22 are exposed outward from the vicinity of the lumbar region of the pilot. Next, the pilot, after entering the cockpit of the aircraft and arriving at the cockpit 41, attaches the condenser 24 of the heat pipe 20 to the evaporator 34 of the refrigerator 30 provided on the seat side and attaches the control unit 40. By operating, the circulation pump 26 of the heat pipe 20, the compressor 31 of the refrigerator 30, and the cooling fan 32a of the condenser 32 are operated. When the condenser 24 of the heat pipe 20 is attached to the evaporator 34, the drive power source of the circulation pump 26 and the control power source of the control unit 40 are connected to a connector (not shown) at the same time, and power is supplied from the cockpit side. It

When the refrigerator 30 is driven, the internal refrigerant is compressed by the compressor 31, then cooled by the condenser 32 and liquefied, and then adiabatically expanded by the expansion valve 33 to lower the temperature, The evaporator 34 absorbs heat from the condenser 24 of the heat pipe 20. And the heat pipe 20
The working fluid inside is cooled and condensed by the refrigerator 30 in the condensing unit 24, returns to the liquid phase, and collects in the gap communication unit 24 d below the condensing unit 24, and again by the circulation pump 26 the liquid pipe unit 21.
Through the plurality of evaporation pipes 23a, 23a of the evaporation unit 23 ...
Sent to.

Therefore, when the pilot is extremely tense, for example, while the aircraft is traveling overland and the body temperature rises, a plurality of evaporation pipes 23a constituting the evaporation part 23 of the heat pipe 20 attached to each part of the clothing part 1 are formed. However, the working fluid is vaporized by being heated by the body temperature emitted from the body of the pilot, and the vapor is vaporized in the vapor pipe section 2a in the vaporization pipe 23a.
Move in two directions. Then, the steam merged from each evaporation pipe 23a to the steam pipe section 22 moves to the condensation section 24 and exchanges heat with the evaporation section 34 of the refrigerator 30 to release the heat that the steam has transported as latent heat. The working fluid that has condensed and returned to the liquid phase is collected and stays in the gap communication portion 24d.

As a result, by cutting this cooling suit,
When the pilot's body temperature rises, the pilot can release excess body temperature to the outside before sweating, so that the pilot can comfortably fly the aircraft. The amount of cooling by the heat pipe 20 is adjusted by adjusting the opening of the flow rate control valve 28, and this adjustment is made by operating the control unit 40.

Further, since the heat pipe 20 carries out heat transfer by utilizing latent heat, it is possible to carry out a large amount of heat transfer at a time, and it is possible to reduce the diameter of the closed pipe. Therefore, by using the heat pipe 20 in the heat exhausting section 2, it is possible to reduce the size and weight of the cooling suit. Further, since the heat pipe 20 transports heat so that the heat distribution becomes uniform, there is no difference in temperature, and the clothes are not made uncomfortable due to the temperature. Further, since the condensing part 24 of the heat pipe 20 is easily attached to and detached from the evaporator 34 of the refrigerator 30, the pilot wears the clothes part 1 of this cooling suit outside the cockpit of the aircraft and is relatively free. You can board the cockpit in this state.

As shown in FIG. 5, a gap 43 for blowing air is provided between the clothes 1 of the cooling suit and the flight suit W, and a blower fan is provided on one side of the pump unit 25, for example. By sending the ventilation air from the blower fan to the gap 43 through the duct, the cooling effect of the cooling clothing is further improved.

Further, as shown in FIG. 4, the evaporation part 23 of the heat pipe 20 is attached to the pilot's helmet 44 through the liquid pipe part 21 and the steam pipe part 22, and the liquid pipe part 21 and the steam pipe part 22 are attached. It is also possible to cool the pilot's head in the same manner by attaching a condensing part which is attached to and detached from the evaporator of the refrigerator to the other end side of.

Further, in the above embodiment, the heat pipe 20
Although the sealed tube such as the evaporation part 23 is made of an aluminum tube, if it is made of a light and flexible rubber tube or plastic tube having a metal coating layer of aluminum or the like on its inner surface, the cooling clothes can be further improved. The weight can be reduced. Further, if these heat pipes are woven into the cloth surface of the clothes part 1, the evaporation part 23 can be brought into close contact with the skin of the pilot who is the clothes, and the cooling effect of the cooling clothes can be further improved. . Here, the reason why the metal coating layer of aluminum, copper or the like is formed on the inner surface of the rubber tube or the like is to prevent gas leakage and generation of non-condensable gas.

If the refrigerator 30 is operated in a reverse cycle and the evaporation section 23 of the heat pipe 20 serves as a condensation section and the condensation section 24 serves as an evaporation section, this cooling clothing can be used as warm clothing. it can.

In the above embodiments, the vest for aircraft pilots has been described as the cooling suit, but it is needless to say that it is not limited to the vest and may be jackets, pants, or the like, and its application is also limited to pilot use. For those who work in a high temperature environment such as workers in blast furnaces, casting workers, coal miners and firefighters, or for a long time such as a racer on a motorcycle or a doctor during surgery. Of course, it may be used for those who maintain the condition, and for those who cut off contact with the outside world, such as pesticide sprayers, divers (in this case, as thermal suits), and astronauts. . If a person wearing a cooling suit is required to take some free action, such as a worker in a high temperature environment or a pesticide sprayer,
For example, the liquid pipe portion 21 and the steam pipe portion 22 of the heat pipe 20 may be configured by long flexible pipes.

[0031]

As described above, the cooling garment of the present invention includes a pump for delivering the working fluid condensed in the condensing portion of the loop type heat pipe enclosing the working fluid for heat transfer as latent heat toward the evaporation portion. A liquid pipe part through which the liquid-phase working fluid delivered from this pump flows, a plurality of evaporation pipes branched from a plurality of positions of the liquid pipe part and woven or attached to the clothes part, and a plurality of these pipes. Since each end portion of the evaporation pipe is connected and communicated with each other, and has a steam pipe portion through which the steam flows through toward the condensation portion, uniform cooling is possible due to the heat pipe characteristics, and it can be comfortably mounted. At the same time, since the flow of the working fluid forcibly circulated can be a single-phase flow, there is no scattering limit, heat transfer efficiency is improved, and an excellent cooling effect is obtained. Further, if the condenser of the loop type heat pipe is attached to the cooling means of a system different from the loop type heat pipe in a heat transferable and detachable manner, the cooling action is ensured while the degree of freedom of movement of the clothing person is secured. Can be improved.

[Brief description of drawings]

FIG. 1 is a system diagram of a cooling system for cooling clothes.

FIG. 2 is a diagram showing a front surface side of a clothing part or the like.

FIG. 3 is a view showing a state in which an evaporation tube is attached to a clothing part.

FIG. 4 is a diagram showing a state in which a pilot wears a cooling suit and is in the cockpit.

FIG. 5 is a diagram showing a state in which a gap for blowing air is provided between a clothing part of the cooling suit and the flight suit.

[Explanation of Codes] 1 clothing part 2 cooling mechanism 20 heat pipe 21 liquid pipe part 22 steam pipe part 23 evaporation part 23a evaporation pipe 24 condensation part 30 refrigerator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuuji Saito 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd. (72) Fumiaki Aoyama 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Inventor Tadao Yamada 1007 Izumisawa, Chitose, Hokkaido 151 151 Fujikura, Hokkaido

Claims (2)

[Claims] 1. In a cooling garment having a cooling function of removing heat from a wearer and radiating the heat to the outside, the working fluid condensed in the condensing portion of the loop type heat pipe enclosing the working fluid that transfers heat as latent heat is directed toward the evaporating portion. A pump for delivering to the pump, a liquid pipe portion through which the working fluid in the liquid phase delivered from the pump flows, and a plurality of evaporation pipes branched from the liquid pipe portion and woven or attached to the clothes portion, A cooling garment characterized in that each of the plurality of evaporation pipes is connected to each other at their respective end portions and has a steam pipe portion through which steam flows toward the condensation portion. 2. The condensing part of the loop heat pipe,
The cooling garment according to claim 1, wherein the cooling means is detachably attached to a cooling means of a different system from the loop type heat pipe.