JP2014088824A - Vehicular heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular heating system capable of rapidly removing snow or ice from a vehicular component even if snow or ice is kept to be adhered to a vehicular component.SOLUTION: This vehicular heating system includes a closed reaction segment comprising exothermic material 12 composed of alkaline earth oxide that can be repeatedly used, a reaction container 13 filled with the exothermic material 12, a water supplying and recovering part 14 for supplying water to perform hydration reaction with the exothermic material 12 and recovering water generated by regenerating the exothermic material 12 after hydration reaction and a water supplying amount control valve 15, and a reaction container 13 of the closed reaction segment are removably arranged around a waste gas passage 16 of an engine, the exothermic material 12 after hydration reaction is regenerated by the heat of the waste gas, a thermal medium storing part 17 for storing the thermal medium circulated through a washer liquid storing tank for a head lamp is externally contacted with the outer peripheral surface of the reaction container 13 and the thermal medium in the thermal medium storing part 17 is heated by heat generated through the hydration reaction of the exothermic material 12.

Description

  The present invention relates to a heating system for vehicles such as automobiles, buses, and trucks. More particularly, the present invention relates to a vehicle heating system that can quickly remove snow and ice from vehicle parts such as headlamps and fender liners in cold regions below -10 ° C.

  Conventionally, for example, when driving on a winter road in a cold region below -10 ° C., snow (ice) freezes on the inner surface of the tire house, and if left as it is, the snow accumulated in the tire house A block of (ice) may come into contact with the tire and lock, and the handle may not be cut.

  For this reason, it is usually necessary to stop the car every two to three hours and drop a block of snow (ice) in the tire house. Depending on the weather conditions, the snow (ice) lump in the tire house may grow to a size that adversely affects the steering operation in about an hour. The removal of snow (ice) lump on the road in bad weather Not only was it hard work, but it was also accompanied by great danger.

  In addition, a lump of snow (ice) generated in the tire house may fall out backward due to vibration during traveling, causing an accident. In particular, in the case of large vehicles such as trucks, the lump of snow (ice) generated in the tire house also becomes large, so it is very dangerous to drop it backward.

  On the other hand, when snow (ice) accumulates on the grill and bumper openings of the vehicle and accumulates, sufficient wind does not enter the engine room, causing overheating.

  Under such circumstances, an apparatus that can effectively prevent snow (ice) from adhering to a vehicle has been proposed (see, for example, Patent Document 1). This apparatus is provided with a heating means for heating a fender disposed so as to face the wheel house, and the heating means uses cooling water of the engine sent out from the engine. is there.

  However, this device is parked in the parking lot day and night, and when the cold engine is started, the cooling water itself is cold, and the snow (ice) adhering to the parts of the vehicle cannot be quickly removed.

  A first object of the present invention is to provide a vehicle heating system that can quickly remove snow and ice from vehicle parts such as headlights and fender liners, even if snow or ice adheres thereto.

  Magnesium oxide, calcium oxide, and other heating systems that can be used to instantly heat the exhaust gas catalyst system and engine cooling water even when the engine of a vehicle that has been parked all day and night in the winter is started. It has been proposed to use an alkaline earth metal oxide as a heat generating material, to bring the heat generating material into hydration by bringing water into contact with the heat generating material, to generate heat, and to regenerate by heating. (For example, refer to Patent Document 2).

  However, in the case of this heating system, the hydroxide after the hydration reaction reacts with carbon dioxide in the air to regenerate the carbonate that is difficult to regenerate, so the amount of alkaline earth metal oxide decreases with time, There was a technical problem that the system could not be used for a long time.

  A second object of the present invention is to provide a vehicle heating system that can be used over a long period of time.

JP 2005-297882 A JP-A-7-180539

  That is, the present invention provides a vehicle heating system that can quickly remove snow or ice from vehicle parts such as headlights and fender liners, and can be used over a long period of time. It is an object of the present invention to provide a vehicle heating system that can perform the above.

In order to achieve the above object, the present invention provides a heating system for a vehicle using a heat generating material made of an alkaline earth metal oxide that can be used repeatedly, and the heat generating material can be regenerated using waste heat from the vehicle as a heat source. In
A reaction vessel filled with the exothermic material;
A water supply / recovery unit for supplying water for hydrating the exothermic material to a reaction vessel and recovering water generated by regenerating the exothermic material after the hydration reaction;
A control valve for controlling the amount of water supplied;
A closed reaction part consisting of
The outer peripheral surface of the reaction vessel of the closed reaction portion is circumscribed by a heat medium storage portion for storing a heat medium that circulates through vehicle parts that require heating, and heat generated by the hydration reaction of the heat generating material. Thus, the gist of the vehicle heating system is characterized in that the heat medium in the heat medium storage section is heated.

  The invention according to claim 2 is the gist of the vehicle heating system according to claim 1, wherein the reaction vessel of the closed reaction part is detachably disposed around the engine or the waste gas path. did.

  The gist of the invention according to claim 3 is that the heating system for a vehicle according to claim 1 or 2 is filled with an inert gas or nitrogen gas in the reaction vessel of the closed reaction part. .

  According to a fourth aspect of the present invention, a thermocouple is disposed in the reaction vessel, and a control valve opens and closes according to the temperature measured by the thermocouple to adjust the amount of water supplied to the reaction vessel. The gist of the vehicle heating system according to any one of claims 1 to 3, characterized in that it is configured as described above.

  The invention according to claim 5 is the vehicle according to any one of claims 1 to 4, wherein the heat medium is a heat medium gas selected from a rare gas, ammonia, chlorofluorocarbon, and nitrogen gas. The heating system was the gist.

  In the invention according to claim 6, the vehicle parts are a headlamp, a backlight, a direction indicator, a headlight, a fender liner, a tire house, a grill, a bumper, a bonnet, a door, a steering, a shift lever, a dashboard, and a seat. 6. The vehicle heating system according to claim 1, wherein the vehicle heating system is any one or more selected from the group consisting of a headrest, a door trim, a catalyst device, and an engine coolant. It was.

  The vehicle heating system according to the present invention includes a vehicle in which a heat medium in a heat medium storage unit heated by heat generated by a hydration reaction of an exothermic material made of an alkaline earth metal oxide requires heating. Because it is designed to circulate, even when it is parked in the parking lot all day and night in the winter and the engine of a cold vehicle is started, snow and ice adhering to vehicle parts such as headlights and fender liners are promptly removed. This can be removed, and the exhaust gas catalyst system, engine cooling water, air supplied to the engine, and the like can be instantaneously heated.

  The vehicle heating system according to the present invention supplies a reaction vessel filled with a heat generating material, water for hydration reaction of the heat generating material to the reaction vessel, and recovers water generated by regenerating the heat generating material after the hydration reaction. The reaction part consisting of the water supply and recovery part and the control valve for controlling the water supply amount is a closed system, so that the alkaline earth metal hydroxide constituting the heat generating material after the hydration reaction in the reaction vessel and Contact with carbon dioxide or carbon dioxide in the air is suppressed, and hydroxide carbonation can be reduced.

  The vehicle heating system of the present invention can also take a form in which a reaction vessel is filled with an inert gas or nitrogen gas. In this case, the alkaline earth metal hydroxide and carbon dioxide constituting the heat generating material are used. And contact with carbon dioxide gas can be more effectively suppressed, and the carbonation of the hydroxide can be further reduced.

  Furthermore, the vehicle heating system of the present invention can take a form in which the reaction vessel is detachably disposed around the engine or the waste gas path. In this case, the alkaline earth metal hydroxide constituting the heat generating material can be regenerated by the waste heat from the engine or the waste gas path, and the waste heat of the vehicle can be effectively used.

  Even if the reaction part is closed or the reaction vessel is filled with inert gas or nitrogen gas, the carbonation of the alkaline earth metal hydroxide that constitutes the heat generating material cannot be completely suppressed. The carbonation of the heat generating material in the reaction vessel proceeds with time, and a sufficient calorific value cannot be secured. However, when the reaction vessel is detachably arranged around the engine or the waste gas path, each reaction vessel filled with a heat generating material can be replaced with a reaction vessel filled with a new heat generating material. Sufficient calorific value can be obtained.

It is a perspective view which shows the state which has arrange | positioned the reaction container of the heating system of this invention removably around an engine or a waste gas path | route. It is a principal part expanded sectional view of the heating system shown in FIG. It is a schematic diagram which shows the example which applied the heating system of this invention to the heating of the headlamp. It is a schematic diagram which shows the example which applied the heating system of this invention to the heating of the fender liner. It is a schematic diagram which shows the example which applied the heating system of this invention to the heating of steering.

  Hereinafter, the heating system of the present invention will be described in more detail. The heating system of the present invention includes, for example, a vehicle headlamp, a backlight, a direction indicator, a headlight, a fender, a tire house, a grill, a bumper, a bonnet, a door, a steering, a shift lever, a dashboard, a seat, a headrest, and a door trim. It can be applied to the heating of the catalyst device and the engine coolant.

  The heating system of the present invention uses a heat generating material made of alkaline earth metal oxide that can be used repeatedly, and the heat generating material can be regenerated using the waste heat of the vehicle as a heat source. Examples of the alkaline earth metal oxide include CaO, SrO, and BaO. These oxides react with water to form hydroxides, respectively, and generate large thermal energy. For example, when CaO reacts with water, it generates a heat of hydration reaction of 63.6 kJ / mol. When SrO reacts with water, it generates a heat of hydration reaction of 81.2 kJ / mol, and BaO reacts with water. When this is done, it reacts violently by releasing heat of hydration reaction of 105.4 kJ / mol (the amount of heat of 1 kJ can melt 3 g of ice at 0 ° C.).

  On the other hand, the decomposition temperature of the hydroxide after the hydration reaction of these alkaline earth metal oxides is, for example, 480 ° C. for Ca (OH) 2, 580 ° C. for Sr (OH) 2 and 730 for Ba (OH) 2. It can be regenerated to the original oxide by heating, and can be used as a heat generating material that can be used repeatedly. The heating system of the present invention uses these reusable alkaline earth metal oxides as a heat generating material, and uses the waste heat of the vehicle as a heat source for the regeneration.

  Examples of the waste heat of the vehicle include an engine and waste gas from the engine. Therefore, by disposing the reaction system of this system, specifically, a reaction vessel filled with a heat generating material, which will be described later, around the engine and around the path of the waste gas from the engine, the heat of the waste gas from the engine and the engine is cooled. It can be used as a heat source for regenerating the exothermic material composed of hydroxide after the sum reaction.

  In addition, as the alkaline earth metal oxide used as the heat generating material, in addition to the alkaline earth metal oxide powder, a molded body obtained by press molding the oxide powder into a granular shape or a plate shape can be used. In addition, it is desirable that the molded body used as the heat generating material has a porous structure in order to increase the contact area with water and increase the reaction efficiency.

  As shown in FIGS. 1 and 2, the heating system of the present invention supplies the reaction vessel 13 filled with the above-described exothermic material 12 and water for hydrating the exothermic material 12 to the reaction vessel 13 for hydration. It has the reaction part 11 which consists of the water supply collection | recovery part 14 which collect | recovers the water produced by reproducing | regenerating the heat-generating material 12 after reaction, and the control valve 15 which controls the supply amount of the said water. In order to suppress contact between the heat generating material 12 in the reaction vessel 13 and air, the reaction unit 11 closes the path of the water supply and recovery unit 14 and the control valve 15 connected to the reaction vessel 13 of the reaction unit 11, and air cannot enter and exit. It is like that. The reason why the reaction unit 11 is a closed system is that the hydroxide after the hydration reaction of the alkaline earth metal oxide reacts with carbon dioxide or carbon dioxide in the air and is carbonated. For example, in the case of Ca (OH) 2, carbonated calcium carbonate has a heat of decomposition of 837 ° C. and cannot be decomposed by the waste heat of the vehicle. If the alkaline earth metal hydroxide carbonation progresses, the amount of heat-generating material that can be used in the heating system will be reduced by that amount, and eventually the necessary amount of heat will not be secured and the system will not function as a heating system. Because it becomes.

  Moreover, the inside of the reaction vessel 13 of the reaction unit 11 may be filled with an inert gas or nitrogen gas. In this case, the contact between the alkaline earth metal hydroxide constituting the heat generating material and carbon dioxide or carbon dioxide can be more effectively suppressed, and the carbonation of the hydroxide can be further reduced. .

  The size, shape, and material of the reaction vessel 13 are not particularly limited, and the required amount of heat, that is, the amount of heat generating material, the engine as a heat source for regenerating the heat generating material, and the space around the path of waste gas from the engine. What is necessary is just to determine suitably according to a magnitude | size, a shape, the shape of the components which fix this reaction container 12, etc. In the case of the reaction vessel 13 shown in FIG. 1 and FIG. 2, a cylindrical vessel is used so that it can be removably fitted to the outer periphery of the exhaust gas path 16 from the engine, that is, the pipe near the outer shell to which the front pipe is connected. Further, as the material of the container, a metal that does not break or deteriorate even when exposed to a high temperature due to an exothermic Han reaction of the exothermic material, austenitic stainless steel, or the like can be used. In the case of EV cars, the waste heat from the vehicle is waste heat from the motor or battery, but the waste heat alone is not sufficient as a heat source for regeneration. A heater can be used in combination.

  The reaction vessel 13 is supplied with water for hydrating the exothermic material 12 filled in the reaction vessel 13 and recovers water generated by regenerating the exothermic material 12 after the hydration reaction. 14 (water tank) is connected through a circulation pipe 14a. In the case of the illustrated example, the outer periphery of the water supply / recovery unit 14 (water tank) and the circulation pipe 14a connected from the water supply / recovery unit 14 (water tank) to the reaction vessel 13 is covered with a planar heating element (not shown). The water is not frozen by the cold air in winter.

  In addition, a control valve 15 is disposed in a circulation pipe 14 a connected from the water supply / recovery unit 14 (water tank) to the reaction vessel 13, and the amount of water supplied to the reaction vessel 13 is controlled. A thermocouple (not shown) is disposed in the reaction vessel 13. The control valve 15 opens and closes according to the temperature measured by the thermocouple (not shown), and the amount of water supplied to the reaction vessel 13 is reduced. It has come to be adjusted.

  Further, a heat medium storage portion 17 for storing the heat medium M is circumscribed on the outer peripheral surface of the reaction vessel 13 in the closed reaction portion. Then, the heat generating material 12 filled in the reaction vessel 13 is heated by the hydration reaction caused by the contact with the water supplied from the water supply / recovery unit 14 (water tank). Is to be heated. The heated heat medium M circulates through vehicle parts that require heating. In the illustrated example, the compressor 18 is disposed in the circulation system of the heat medium M, and the heat medium M is forcibly circulated.

  As the heat medium M, a liquid heat medium liquid such as water, alcohol, ethylene glycol, or propylene glycol, a heat medium gas selected from rare gas, ammonia, chlorofluorocarbon, and nitrogen gas can be used. As the vehicle heat medium M, a heat medium gas such as nitrogen gas is preferable because it is light, can be heated to a temperature exceeding 100 ° C., and is easily circulated. The circulation pipe 19 that circulates the heat medium M is desirably one that can be bent and that does not easily deteriorate even when exposed to high temperatures. Specific examples include a metal pipe and a heat-resistant PVC pipe. Further, it is desirable that the circulation pipe has a heat insulating effect enhanced by covering the periphery of the pipe with a heat insulating material.

  Examples of vehicle parts that rapidly heat by circulating the heat medium M include vehicle headlamps, backlights, turn indicators, headlights, fender liners, tire houses, grills, bumpers, bonnets, doors, steering, and shifts. Examples include levers, dashboards, seats, headrests, door trims, catalyst devices, and engine coolants. Hereinafter, a vehicle headlamp (FIG. 3), a fender liner (FIG. 4), and a steering (FIG. 5) to which the heating system of the present invention is applied will be described.

  In the example shown in FIG. 3, the circulation pipe 19 (not covered with the heat insulating material) from the reaction unit 11 is wound around the outer periphery of the washer liquid storage tank 22 of the headlamp 21, and the heat medium is circulated in the circulation pipe 19. The washer liquid in the tank 22 is heated by the heat of M. The heated washer liquid rapidly heats the washer liquid ejection nozzle 23, the wiper 24, and the lens portion 25 of the headlamp 21 to quickly remove snow and ice adhering to the lens section 25 of the headlamp 21. Be able to.

  In the example shown in FIG. 4, the circulation pipe 19 (not covered with the heat insulating material) from the reaction unit 11 is disposed so as to be folded back in a thin synthesizer 32 made of a nonwoven fabric bonded to the inner peripheral surface of the fender liner 31. The heat sink M is heated by the heat of the heat medium M circulating in the circulation pipe 19. Then, the fender liner 31 is rapidly heated by the heated thinsulate 32 so that snow and ice adhering to the fender liner 31 can be quickly removed.

  In the example shown in FIG. 5, a circulation pipe 19 (not covered with a heat insulating material) from the reaction unit 11 is arranged in the steering 41, and is cooled by the heat of the heat medium M circulating in the circulation pipe 19. The steering 41 is heated rapidly.

  In addition, this invention can be freely changed and implemented in the range described in “Claims”.

  The present invention includes, for example, a vehicle headlamp, a backlight, a direction indicator, a headlight, a fender, a tire house, a grill, a bumper, a door, a steering, a shift lever, a dashboard, a seat, a headrest, a door trim, and a catalyst device. And can be used industrially as a rapid heating means such as engine coolant.

Heat-generating material ... 12
Reaction vessel ... 13
Water supply / recovery unit ・ ・ ・ 14
Control valve 15
Waste gas route ・ ・ ・ 16
Heat medium storage part ・ ・ ・ 17
Water ... W
Heat medium ・ ・ ・ M

Claims (6)

In a vehicle heating system that uses a heat-generating material composed of an alkaline earth metal oxide that can be used repeatedly, and that can regenerate the heat-generating material using waste heat from the vehicle as a heat source,
A reaction vessel filled with the exothermic material;
A water supply / recovery unit for supplying water for hydrating the exothermic material to a reaction vessel and recovering water generated by regenerating the exothermic material after the hydration reaction;
A control valve for controlling the amount of water supplied;
A closed reaction part consisting of
The outer peripheral surface of the reaction vessel of the closed reaction portion is circumscribed by a heat medium storage portion for storing a heat medium that circulates through vehicle parts that require heating, and heat generated by the hydration reaction of the heat generating material. The vehicle heating system is characterized in that the heat medium in the heat medium storage section is heated.   The vehicle heating system according to claim 1, wherein the reaction vessel of the closed reaction unit is detachably disposed around the engine or the waste gas path.   The vehicle heating system according to claim 1 or 2, wherein a reaction container of the closed reaction part is filled with an inert gas or a nitrogen gas.   A thermocouple is disposed in the reaction vessel, and a control valve opens and closes according to the temperature measured by the thermocouple to adjust the amount of water supplied to the reaction vessel. Item 4. The vehicle heating system according to any one of Items 1 to 3.   The vehicle heating system according to any one of claims 1 to 4, wherein the heat medium is a heat medium gas selected from rare gas, ammonia, Freon, and nitrogen gas.   Vehicle parts include headlamps, backlights, turn indicators, headlights, fender liners, tire houses, grills, bumpers, bonnets, doors, steering, shift levers, dashboards, seats, headrests, door trims, catalytic devices and engines. The vehicle heating system according to any one of claims 1 to 5, wherein the vehicle heating system is one or more selected from among coolants.

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