Warming jacket

Abstract: A catalytic combustion heating device 3 for generating heat by oxidation reaction of fuel gas stored in a fuel tank 24 and air in a combustion unit 29 is installed in a mount 4 provided in a jacket 1, the mount 4 is fastened to the waist of the body wearing the jacket 1 by a holding band 9, and the load applied on the shoulders through the jacket is lessened and the comfort of wearing is improved, thereby realizing a warming jacket capable of warming the body comfortably.

Description: The present invention relates to a warming jacket for warming the body by providing a jacket worn by a person with a catalytic combustion heating device. Hitherto, as a warming device for warming part of the body, a body warmer for heating the body by using the heat obtained from chemical reaction of iron oxide powder is common, and it is designed to be adhered easily to any position by using an adhesive, and it is easy and inexpensive, and is hence widely used. As disclosed in JP Laid-open Utility Model No. 49-108290, a warming cloth incorporating an electric heater inside is worn at an arbitrary position of the body, and it is heated by a battery or other power source, and the power source is not limited to battery, but a commercial power source may be used. As an example of warming part of the body by using the heat obtained by catalytic combustion of liquefied petroleum gas, an application in a foot warmer as disclosed in JP Laid-open Utility Model No. 50-8039 is known. The clothing described in EP-A-0 803 206 comprises a fuel gas container supplying fuel gas to a heat generating element The heat generating element is fixed to a heat sheet to be mounted into the clothing by releasable connectors. A temperature sensor detects the temperature of a catalytic combuster. The described clothing structure further comprises a protection case in order to prevent a direct contact between the heat generating element and the person. A vest designed for carrying a load is described in US-A-4 669 127. On its back side, the vest is equipped with a large compartment. On the front side, the vest comprises a number of pockets. In order to constrain the weight close to the body, the vest is provided with a waist belt. FR-A-2 601 860 relates to a bag which may be fixed on the back of a sports jacket. The bag is fixed to a body by means of vertical and horizontal holding bands. As the bag is worn over the sports jacket, the sports jacket is provided with horizontal and vertical openings for passing the individual holding bands therethrough and to allow the holding bands to be directly fixed to the body. A backpack with an integral jacket wherein the jacket/backpack assembly may also include a waist belt is described in US-A-5 699 560. Moreover, EP-A-0803206 discloses means of warming the body by attaching a catalytic combustion heating device making use of liquefied petroleum gas to the clothes. In such conventional warming devices, in the case of making use of chemical reaction, since there is no temperature control means, it is hard to warm the body comfortably at an arbitrary temperature corresponding to the ambient temperature, and the temperature declines in a short time, so that it must be designed to be disposable. On the other hand, in the case of heating an electric heater by battery or other power source, when used in a cold district where the ambient temperature is low, it is hard to warm the body to a comfortable temperature, and the power source must be extremely large in size for obtaining a necessary and sufficient heat quantity, and it is heavy and not easy to use, and it is far from practical to be worn on the body. Or, in the case of using commercial power source as the power source for heating the electric heater, a power cord must be provided and connected to a commercial power outlet, and it cannot be used outdoors or others where power source is not available. To solve so many practical problems, it has been proposed to warm the body by furnishing a jacket with a catalytic combustion heating device. According to this method, heating for a long time is possible only by refilling fuel gas, and a sufficient heat quantity is obtained if used in a cold district where power source is not available, so that the body can be warmed to a comfortable temperature. However, such catalytic combustion heating device is complicated in structure and heavy in weight, and when the jacket is worn, its weight is applied on shoulders through the jacket, and it is poor in the feeling of wear, and when worn for a long time or when moving the arms, loading is heavy and it is easy to fatigue. This problem becomes more obvious when the jacket is modified from the heavy winter clothes to a light and thin jacket. It is a merit of the catalytic combustion heating device that the temperature can be adjusted and kept constant by controlling the feed rate of fuel gas. At this time, by feeding the fuel gas while the catalyst is within the catalytic combustion temperature, catalytic combustion can be continued. In other words, it is hard to control the temperature below the catalytic combustion temperature, and it is hard to warm the body at a comfortable temperature by controlling the catalytic combustion heating device at a low temperature depending on the ambient temperature. It is the object of the present invention to provide a warming jacket having an improved wearing effect. This is achieved by the teaching of claim 1. To achieve this object, the invention provides a catalytic combustion heating device for generating heat by oxidation reaction of fuel gas stored in a fuel tank and air in a catalytic combustion heating unit, and this catalytic combustion heating device is attached to a mount provided in a jacket, and this mount is fastened to the body wearing the jacket by means of a holding band. As a result, the load of the catalytic combustion heating device applied on the shoulders through the jacket when the jacket is worn is dispersed and lessened by the holding band, and the comfort of wearing is improved, and the burden and fatigue can be alleviated. The invention also provides a catalytic combustion heating device for generating heat by oxidation reaction of fuel gas stored in a fuel tank and air in a catalytic combustion heating unit, and a moving passage of warm air heated by the catalytic combustion heating device is composed between a coat worn over the jacket and the jacket. As a result, the jacket for wearing the catalytic combustion heating device can be simplified as an inner shirt worn under the coat, and by wearing a desired coat thereover, the body can be warmed comfortably, and it is not necessary to detach and attach the catalytic combustion heating device when exchanging a variety of coats. Fig. 1 is a front view of a warming jacket in a first embodiment of the invention. Fig. 2 is a development opening the front part of the warming jacket. Fig. 3 is an internal structure of the back part of the warming jacket. Fig. 4 is a side sectional view of the warming jacket. Fig. 5 is an essential sectional view of a catalytic combustion heating device of the warming jacket. Fig. 6 is a block diagram of essential parts of the catalytic combustion heating device of the warming jacket. Fig. 7 is an operation timing chart of the catalytic combustion heating device of the warming jacket. Fig. 8 is a perspective view of a warming jacket in a second embodiment. Fig. 9 is an essential sectional view of a warming jacket in a third embodiment of the invention. Fig. 10 is an essential sectional view showing the state of use of the warming jacket. Referring now to the drawings, embodiments of the invention are described below. (Embodiment 1) As shown in Fig. 1 to Fig. 4, a jacket 1 is manufactured in a simple form such as a vest, and is designed to be worn on the upper half of the body, and a mount 4 for mounting a catalytic combustion heating device 3 is provided in the lower part of a back part 2. A linking string 7 is stretched between a pair of right and left shoulder belts 5 provided in the upper part of the back part 2 and a front part 6, and its length can be adjusted by an adjuster 8. Reference numeral 9 denotes a holding band for fastening the mount 4 to the body, and it can be detachably linked by means of a buckle 10, and provided inside of an opening side 12 formed of a fastener 11 or the like for coupling the front part 6 of the jacket 1, so that the mount 4 can be fastened to the waist of the body wearing the jacket 1 in an opened state of the front part 6 by the opening side 12. The holding band 9 is designed to be adjustable in length when fastened by means of an adjuster 13. The front part 6 of the jacket 1 is composed of mesh or other air permeable fibers, and this front part 6 and the back part 2 are stretchably linked by way of an elastic part 14. The back part 2 of the jacket 1 is composed of a surface cloth 15 provided at outside and a lining 16 provided at inside, and the mount 4 is free to open or close the opening 17 provided in the lining 16 by means of a fastener or the like, so that the catalytic combustion heating device 3 can be put in and out of the mount 4 by way of this opening 17. The catalytic combustion heating device 3 is fixed so as not to move in the state installed in the mount 4, and the mount 4 is formed by providing a gusset 18 larger than the thickness of the catalytic combustion heating device 3. Above the mount 4 there is a moving passage 19 of warm air heated by a catalytic combustion heating unit 20 of the catalytic combustion heating device 3, and communicating with the mount 4, the warm air is diffused to the back part 2, and warm air is released to the body side from the back part 2 of the jacket 1 through air vents 21 provided in the lining 16. In the moving passage 19, multiple hemispherical spacers 22 made of elastic and repulsive material such as sponge are projecting. The spacers 22 may be provided on either surface cloth 15 or lining 16, or on both. The catalytic combustion heating device 3 is described below. As shown in Fig. 5 and Fig. 6, a fuel tank unit 23 includes a fuel tank 24 for storing fuel gas such as liquefied petroleum gas, and the fuel is butane, propane or their mixture, and a cartridge filled with fuel is detachably provided in the fuel tank unit 23. The fuel gas in the fuel tank 24 is vaporized in a vaporization device 25, and is supplied into the catalytic combustion heating unit 20 coupled with a flexible fuel passage 27 through a fuel regulator 26 composed of solenoid valve. The catalytic combustion heating unit 20 linked to the fuel tank unit 23 through a flexible communicating tube 28 generates heat by catalytic combustion by oxidation reaction of fuel gas and air by a catalyst (not shown) provided in a combustion unit 29. The fuel tank unit 23 has a controller 31 for controlling so that the catalytic combustion heating unit 20 may be heated to a preset temperature by detecting the temperature of the combustion unit 29 by a temperature sensor 30 such as thermistor, and by turning on or off the fuel regulator 26, supply of fuel gas into the catalytic combustion heating unit 20 is controlled. The controller 31 is composed of control circuits made of multiple electronic components disposed on a printed circuit board. An operation unit 32 connected to the controller 31 is drawn out of the fuel tank unit 23 by a specified length, and is responsible for temperature setting for heating the catalytic combustion heating unit 20 to a specified temperature, and on/off setting for ignition of fuel gas and stopping of combustion relating to this temperature setting. A power source unit 33 comprises a battery or the like, and supplies power to the controller 31, ignition unit 34, fuel regulator 26, temperature sensor 30, and temperature setting unit 35 to operate them. The catalytic combustion heating unit 20 comprises a nozzle 36 for injecting fuel gas to the combustion unit 29, an intake 37 for taking in air for mixing with the fuel gas, the ignition unit 34 for striking a spark by high voltage discharge to ignite the mixed gas of fuel gas and air, and an exhaust unit 38 for discharging the exhaust gas fired by the combustion unit 29. A heating sheet 39 is composed of a textile material formed by knitting highly heat conductive metallic fibers, and is attached to the catalytic combustion heating unit 20, so as to be held in the mount 4 of the jacket 1. The catalytic combustion heating device 3 is composed of the fuel tank unit 23 and catalytic combustion heating unit 20. Mounting of the catalytic combustion heating device 3 on the jacket 1 is described below. The opening 17 of the lining 16 provided in the back part 2 of the jacket 1 is opened from inside, the catalytic combustion heating device 3 is put into the mount 4, and fixed at specified position, and the heating sheet 39 is also held in the mount 4, and the opening 17 is closed. The operation unit 32 drawn out from the fuel tank unit 23 is designed to be held within a pocket 40 provided in the front part 6 of the jacket 1. An air pipe 41 connected to the intake 37 of the catalytic combustion heating unit 20 is extended to the front part 6 of the jacket 1 remote from the mount 4, and fresh air is taken in from an air inlet 42 provided at its leading end, and supplied into the catalytic combustion heating unit 20. When dismounting the catalytic combustion heating device 3 from the jacket 1, it can be taken out by opening the opening 17 of the lining 16 from the inside. Wearing of the jacket 1 on the body is described below. First, a pair of right and left shoulder belts 5 are applied on both shoulders, and the length of the linking string 7 is adjusted to a proper length by the adjuster 8. One end is coupled with the detachable buckle 10 provided at other side of the holding band 9 fitted near the mount 4, and the length is adjusted and fixed so that the mount 4 may coincide with the waist of the body. The holding band 9 is provided inside of the front part 6 of the jacket 1, and the mount 4 is fastened to the body in an open state of the opening side 12 composed of fastener 11 or the like for coupling the front part 6, and the opening side 12 provided in the front part 6 is closed. At this time, since the elastic part 14 is provided, the elastic part 14 expands or contracts depending on the physique of the body, so that the jacket 1 is worn on the body without allowing gap between them regardless of the physique. The operation of the catalytic combustion heating device 3 is described below. First, when warming the body, a start switch 43 provided in the fuel tank unit 23 is turned on to open the fuel regulator 26, and the fuel gas is supplied into the combustion unit 29 through the fuel passage 27. The fuel gas supplied in the combustion unit 29 is gas, and fuel gas injected from the nozzle 36 sucks in air from the intake 37 through the air pipe 41 to be a mixed gas. When the start switch 43 is turned on, the power source unit 33 is started, and the ignition unit 34 functions to strike a spark. When the mixed gas in the combustion unit 29 is ignited to fire a flame, the operation of the ignition unit 34 is not necessary. The generated flame heats the catalyst supporting the platinum, and when reaching the temperature for oxidation reaction by catalyst, the operation is transferred to catalytic combustion. The transfer temperature to general catalytic combustion is about 200°C. When transferred to catalytic combustion, the gas flowing into the ignition unit 34 is exhaust gas, and the flame is extinguished. Herein, by selecting an arbitrary temperature by the operation unit 32, when setting the preset temperature, the temperature of the combustion unit 29 is detected by the temperature sensor 30, and the catalytic combustion heating unit 20 is controlled to the preset temperature. The controller 31 is designed to turn on the fuel regulator 26 and also turn on the ignition unit 34 for a specific time if the temperature of the combustion unit 29 is lower than the temperature preset by the temperature setting unit 35. The operation of the catalytic combustion heating device 3 is further described while referring to Fig. 7. In the case of control of temperature of the combustion unit 29 at T1, when the power source is turned on at time t1, the fuel regulator 26 composed of solenoid valve and others is turned on, and the fuel gas is supplied into the combustion unit 29. The controller 31 turns on the fuel regulator 26, and after passing time t2, the ignition unit 34 is turned on, and spark discharge is generated to ignite the fuel gas. The operation of the ignition unit 34 continues for a specific time t3, and stops after ignition on the fuel gas is assured. When a flame is generated by ignition on the fuel gas, the generated flame heats the catalyst and combustion unit 29, and when elevating to a specified temperature, the operation is transferred to catalytic combustion. When the catalytic combustion starts, exhaust gas is supplied into the flame area, and the flame extinguishes spontaneously. When the temperature of the combustion unit 29 by catalytic combustion reaches the preset temperature T1, the controller 31 turns off the fuel regulator 26 at preset temperature T1 reaching time t4, and supply of fuel gas into the combustion unit 29 stops. The temperature of the combustion unit 29 once rises slightly due to overshoot when the fuel regulator 26 is turned off, and then begins to decline. When the temperature of the combustion unit 29 descends to the preset temperature T1, at time t5, the controller 31 turns on the fuel regulator 26 again, and in time t2 after turning on the fuel regulator 26, the ignition unit 34 is turned on, and this operation of the ignition unit 34 continues for specific time t3, and the ignition operation is repeated. At this time, the set temperature T1 of the combustion unit 29 is high, the temperature is ready for catalytic combustion, and when the temperature of the combustion unit 29 crosses the set temperatureT1, the fuel regulator 26 is turned on to supply fuel gas into the combustion unit 29, and the combustion continues and operation of the ignition unit 34 is not necessary, but the invention is designed to operate the ignition unit 34 even at this time. Therefore, of the catalytic combustion ready temperature of the combustion unit 29 fluctuates, secure operation is guaranteed by a simple constitution. Further, by setting the temperature T1 lower, if lower than the catalytic combustion ready temperature, the temperature is elevated by igniting again, and this operation is repeated to keep constant the temperature of the combustion unit 29. In the invention, as a preferred set temperature for warming the body at a comfortable temperature, it is designed to set the temperature in three stages in a range of about 80 to 130°C. Besides, it is designed to turn on the ignition unit 34 in specific time t2 after the fuel regulator 26 is turned on, and spark discharge is generated after the fuel gas is supplied into the ignition unit 34 so as to ignite securely. Thus, the warm air heated by the catalytic combustion heating unit 20 gets into the moving passage 19 from the mount 4 to diffuse in the back part 2, and the warm air diffused into the moving passage 19 is released to the body side to warm from the air vents 21 provided in the lining 16, and moreover since the mount 4 mounting the catalytic combustion heating device 3 is fastened to the waist of the body by the holding band 9, and the load applied on the shoulders of the body through the jacket 1 is dispersed to the waist and lessened, and the burden and fatigue applied on the shoulders are alleviated, and a comfortable wearing feel is obtained. Besides, the holding band 9 is provided inside of the front part 6 of the jacket 1, and the mount 4 can be fastened to the body while the opening side 12 is open, and therefore if the jacket 1 is worn loosely, the mount 4 can be attracted to the body to warm securely. The holding band 9 is not only adjustable in length when fastened by means of the adjuster 13, but is also free to expand or contract. In this case, since the holding band 9 expands or contracts depending on the motion of the body, the feel of oppression to the body is alleviated, and the freedom of motion is guaranteed. (Embodiment 2) As shown in Fig. 8 illustrating an embodiment helpful for the understanding of the present invention a holding band 45 is provided in a mount 44 mounting a catalytic combustion heating device 3, and it is held at the waist of the body by detachably coupling with a surface fastener 45a provided on an end portion, and a pair of shoulder straps 46 are provided in the mount 44, and the shoulder straps 46 are applied on the shoulders of the body so as to hold the mount 44 by the shoulders and the waist. The length of the shoulder straps 46 can be adjusted by an adjuster 47. The shoulder straps 46 may be detachably held in the mount 44. According to this constitution, the load of the mount 44 mounting the catalytic combustion heating device 3 is dispersed into the shoulders and the waist, and the burden and load applied on the shoulders are alleviated to obtain a comfortable wearing feel, and moreover by wearing a coat thereabove to cover the mount 44, the warm air is released from a releasing area 48 provided in the upper part of the mount 44 to fill up the inside of the coat, so that the upper half of the body can be warmed comfortably. Besides, in order to move the warm air smoothly by forming a gap between the body and the coat, same ones as the spacers 22 described in embodiment 1 may be also formed in the shoulder straps 46. (Embodiment 3) As shown in Fig. 9, a mount 51 is provided in a back part 50 of a jacket 49, and a catalytic combustion heating device 3 is detachably mounted, and there is an opening 52 for releasing warm air in the upper part of the mount 51. Air vents 53 are provided above the opening 52 of the back part 50, and multiple spacers 54 projecting to the outside of the back part 50 are provided. A moving passage 56 of warm air released from the opening 52 is formed between a coat 55 worn thereover and the jacket 49. According to this constitution, it is not necessary to form a moving passage of warm air in the jacket 49, and the constitution of the jacket 49 is simplified, and by wearing a desired coat thereover, the inside of the coat is filled with warm air and the body is warmed, so that a warming jacket may be realized at low cost. The warm air released from the air vents 53 of the back part 50 of the jacket 49 circulates, as shown by arrow in Fig. 10, between the jacket 49 and the body A to get into the front side within the jacket 49, and is diffused outside from a front part 57 composed of air permeable fibers or air permeable mesh. Therefore, when the coat 55 is worn over the jacket 49, the inside of the coat 55 is filled with warm air by circulation of warm air released from the back part 50 of the jacket 49, so that the upper half of the body A can be warmed comfortably. The back part 50 may be also composed of air permeable fibers or air permeable mesh. Thus, according to the invention, comprising a mount for mounting a catalytic combustion heating device including a catalytic combustion heating unit for generating heat by oxidation reaction of fuel gas and air, and a holding band for fastening the mount to the body wearing the jacket, the load applied to the shoulders through the jacket when the jacket is worn is dispersed into other parts fixing the mount and is lessened, so that the feeling of wear is improved. Moreover, by composing the moving passage of warm air heated by the catalytic combustion heating unit by a fuel tank for storing fuel, and a coat worn over the jacket and the jacket, by generating heat by oxidation reaction of the fuel gas and air, it is not necessary to form moving passage of warm air in the jacket, so that the constitution of the jacket may be simplified. Still more, if the temperature of the combustion unit is lower than the set temperature, the fuel regulator is opened, and the ignition unit is put in operation, so that the body can be warmed comfortably by controlling the combustion unit at lower temperature depending on the ambient temperature.

Claims: A warming jacket comprising a fuel tank (24) storing fuel gas, a catalytic combustion heating device (3) having a catalytic combustion heating unit (20) for generating heat by oxidation reaction between said fuel gas and air, a jacket having a mount (4) for mounting said catalytic combustion heating device (3), characterized by a holding band (9) for fastening said mount to a body wearing said jacket, said holding band (9) being provided inside of a front part (6) of said jacket and being capable of fastening the mount to the waist of the body. A warming jacket of claim 1, wherein the holding band (9) is provided inside of an opening side for coupling the front part of the jacket when wearing. A warming jacket of any one of claims 1 to 2, wherein the holding band (9) is formed to be stretchable. A warming jacket of any one of claims 1 to 3, wherein the holding band (9) is designed to adjust freely the length when fastened. A warming jacket of any one of claims 1 to 4, wherein the catalytic combustion heating unit (20) is installed by providing the mount (4) in the back part (2) of the jacket, and a moving passage (19) of warm air heated by the catalytic combustion heating unit (20) is formed by disposing a spacer (22) between surface cloth (15) and lining (16) for forming the back part (2). A warming jacket of any one of claims 1 to 5, wherein the catalytic combustion heating unit (20) is installed by providing the mount (4) in the back part (2) of the jacket, an air pipe (41) is provided for feeding air to the catalytic combustion heating unit (20), and an air inlet (42) provided in said air pipe (41) is disposed in the front part (6) of the jacket, remote from the mount (4). A warming jacket of claim 1, wherein shoulder straps (46) are provided in the mount (44) for mounting the catalytic combustion heating unit (20), and said shoulder straps (46) are applied and held on the shoulders of the body. A warming jacket according to any of claims 1 to 7 further comprising a moving passage (56) of warm air heated by said catalytic combustion heating unit (20) is formed between a coat (55) worn over said jacket (49) and said jacket 49. A warming jacket according to claim 8, further comprising a spacer (54) projecting at the outside of the back part (50) of the jacket (49). A warming jacket of claim 8 or 9, wherein the catalytic combustion heating unit (20) is provided in the back part (50) of the jacket (49), so that the warm air heated by said catalytic combustion heating unit (20) is released into the moving passage (56) formed between the jacket (49) and a coat (55) worn over this jacket (49). A warming jacket of claim 9 or 10, wherein the front part or back part of the jacket (49) is composed of air permeable fibers. A warming jacket of claim 11, wherein the front part or back part of the jacket (49) is composed of air permeable mesh. A warming jacket according to any of claims 1 to 4,7 wherein said catalytic combustion heating unit (20) is provided in the back part (50) of said jacket (49), and the warm air heated by said catalytic combustion heating unit (20) is released into a moving passage (56).

Inventors: ANDO TADASHI, HANADA TORU, ITO SHINICHI, KITANO TOMOAKI, KUSAKA TAKAAKI, NAKAI KOJI, TOMITA KENJIRO, YABUUCHI HIDETAKA, YOSHIDA KIYONOBU, ANDO, TADASHI, HANADA, TORU, ITO, SHINICHI, KITANO, TOMOAKI, KUSAKA, TAKAAKI, NAKAI, KOJI, TOMITA, KENJIRO, YABUUCHI, HIDETAKA, YOSHIDA, KIYONOBU
Applicants: MATSUSHITA ELECTRIC IND CO LTD, MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Application year: 1999
Main classification: A41D13
IPC codes: A41D13