JPS63137013A - Heating device for vehicle - Google Patents

Abstract

PURPOSE:To realize a safe and efficient heating, by blowing off the warm air of a combustion-type heating unit from blowoff holes with shutters provided at the side wall, and taking in the room air from the front side of the car room, in a heating device of a vehicle laden with an internal combustion engine. CONSTITUTION:The air in a car room 4 is delivered to a heat exchanger 2 through an air collecting hole 5 and an air circulating passage 17. Since the burnt gas of a combustor 1 is invited to the heat exchanger 2, the taken-in room air is heated there. The heated warm air is delivered to an air flow passage 8, and blown off through warm air blowoff holes 12 to the car room 4. In this case, sutters 20 are controlled as required to control the warm air can be blown off to the selected portions, and the warming of the car room and the cargo room can be carried out efficiently.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a combustor, a blower, and a heat exchanger for warming or heating the interior of a vehicle, trailer, railway, or other vehicle equipped with an internal combustion engine, etc. The present invention relates to a vehicle heat retention device equipped with a heating unit consisting of the following.

[Conventional technology]

Conventionally, for vehicle interior heating, cooling water from the internal combustion engine is taken out through hot water piping, guided to a heater device, where heat is exchanged indirectly and warm air is sent into the interior to heat the interior. There is. In addition, a burner, that is, a combustor and a heat exchanger are installed in the intake passage of the engine, and the combustor is ignited immediately after the engine starts, and the heat is used to warm the air in the heat exchanger.
A device that introduces warm air into the vehicle interior, or in other words, a vehicle heating device that heats the interior of the vehicle using the amount of heat generated by burning paddy in a combustor regardless of the internal combustion engine (e.g. , JP-A-60-252018) is disclosed. Furthermore, an engine warm-up device (for example, an engine warm-up device designed to supply combustion gas from the combustor to the intake port of the engine via a heat exchanger and to guide air heated by the heat exchanger to the passenger compartment) 61-79864) is disclosed.

In addition, for example, a vehicle heat retention device to which a vehicle heating heat exchanger as disclosed in JP-A-61-188216 is applied, for example, as disclosed in JP-A-61-211118. There is a combustion device for a thermal storage for vehicles. This will be outlined with reference to FIGS. 3 and 4.

In FIG. 3, the combustion device 60 of the vehicle thermal storage is connected to the intake manifold of the internal combustion engine 61 and the air cleaner 63.
are connected by an intake pipe 62. A bypass pipe 64 is provided in the middle of the intake pipe 62, a burner 65 is connected to the bypass pipe 64, and a heat exchanger 66 is arranged downstream of the burner 65.

The warm air heated by the heat exchanger 66 is blown out into the heat-retaining warehouse 67 from the hot air outlet through the conduit 69.

In FIG. 4, a combustion device 60 for a vehicle heat storage is schematically shown. The heat exchanger 66 introduces air outside the vehicle from the air intake into the heat exchanger 66 from the air intake lower 9 via the air cleaner 63 and the blower 77, and
After exchanging heat with the combustion gas from the air, the heated air is sent out from the air outlet 80 to the conduit 69. A vaporizing plug 75 and an ignition plug 76 connected to a fuel supply device 74 are installed in the burner 65 . The control device 70 controls the burner 65 in response to a temperature signal from a room temperature sensor 78 provided in the heat insulation warehouse 67. In the figure, 71 indicates the control device 70.
72 is a battery, and 73 is a fuel tank.

[Problem that the invention seeks to solve]

However, for indoor heating using the cooling water of the internal combustion engine, the temperature of the cooling water rises slowly, so it takes a long time for the heater body to send out hot air, and during that time the heater There is almost no heating function. That is, at present, it takes about 10 minutes or more for a gasoline engine and about 20 minutes or more for a diesel engine until the warm-up of the engine is completed. During this time,
Particularly in cold regions or in winter, the inside of a vehicle is cold, and the defroster that removes frost, ice, etc. from the windows of the vehicle cannot function satisfactorily. In addition, for automotive heating systems or engine warm-up systems that use a combustor independent of the internal combustion engine, combustion cycles, exhaust gas processing, etc. require time and effort, and complex mechanisms and control devices are required. There are problems such as:

In addition, the combustion device for the vehicle thermal storage shown in Fig. 3 quickly burns liquid fuel using a quick ignition system and a quick vaporization system, and efficiently and quickly generates heating air from this combustion heat. , it is possible to send clean heated air that is not mixed with exhaust gas into the car, but
There are problems that need to be improved in terms of effectively and powerfully supplying hot air into the heat-insulating warehouse, increasing the amount of circulating air, and making the temperature distribution in the room uniform.

The purpose of this invention is to solve the above problems, and includes a combustor that uses liquid fuel such as light oil or kerosene, and uses a quick ignition system and a quick vaporization system to quickly convert the liquid fuel into vaporized fuel and burn it. It efficiently and quickly generates heating air from this combustion heat and sends clean heating air that is not mixed with exhaust gas into the interior of a vehicle, etc., and especially heats the interior of a vehicle such as a loading platform. In other words, it can be configured to maintain heat, effectively blow out an optimal amount of hot air into the room, and control the temperature distribution in the room to be uniform. It is an object of the present invention to provide a heat retaining device for a vehicle that can heat a room, that is, keep it warm, by forming a temperature region and arranging the combustor, the heat exchanger, etc. in an extremely favorable condition from the viewpoint of safety.

[Means for solving problems]

In order to solve the above problems and achieve the above objects, the present invention is configured as follows.

That is, the present invention mounts a heating unit including a combustor, a blower, a heat exchanger, etc. on a vehicle, provides a large number of hot air outlets for blowing out hot air in a side wall of the vehicle, and provides at least one of the Regarding the vehicle heat retention device characterized in that a shutter is installed at the wind outlet and an air collection port for indoor air intake is further provided, in more detail, at least the combustor and the heat exchanger are connected to the vehicle heat retaining device. disposed outdoors, the shutter is disposed at the hot air outlet located on the front side of the vehicle, and the shutter is operated to slide open and close;
Moreover, the opening/closing operation of the shutter is controlled in response to a signal from a temperature sensor installed in the room, and the heating unit is arranged at the rear side of the vehicle, and each heating unit is connected to a front wheel of the vehicle. The heating unit is disposed on the side between the rear wheels, or the heating unit is disposed on the upper part of the vehicle between the cargo compartment and the cab of the vehicle, and the side wall of the vehicle is formed into a double wall. An air circulation passage is formed in a space between a cab and a cargo storage area of the vehicle to form a hot air passage and collect the indoor air from the air collection port to the heat exchanger, and further, the combustor is equipped with a glow plug. A blower for supplying combustion air to the combustor can be used in combination with the blower for circulating warm air, or can be provided independently, and the heating unit The power source to operate is AC power or DC1! The present invention relates to a heat retention device for a vehicle, characterized in that it can be switched to a power source.

(Function) The vehicle heat retaining device according to the present invention is configured as described above and functions as follows.That is, this vehicle heat retaining device functions as a heating unit consisting of a combustor, a blower, a heat exchanger, etc. is mounted on a vehicle, a large number of hot air outlets for blowing out hot air are provided in a side wall of the vehicle, a shutter is installed on at least one of the hot air outlets, and an air collection port for sucking indoor air is further provided. Therefore, an optimal amount of warm air is blown into the chamber, making the temperature distribution in the chamber uniform, and in some cases, forming different temperature regions in the chamber, thereby improving the combustion efficiency. It is possible to heat the room, that is, keep it warm, by arranging the heat exchanger, the heat exchanger, etc. in an extremely favorable condition from the viewpoint of safety.Furthermore, due to the arrangement of the blower, the heat exchanger, the combustor, etc., the flow of circulating air is limited. This allows for low resistance and extremely smooth flow of hot air.

Furthermore, if both side walls of the vehicle are configured as double walls to form a hot air passage for the Wi ring, the function of heat insulation, that is, heat retention in the interior of the vehicle is achieved. When at least a plurality of the hot air outlets are arranged in the height direction close to the opening/closing door of the vehicle, a type of warm air air curtain can be formed near the entrance even when the loading shed is opened/closed. Furthermore, since the combustor uses a glow plug to quickly vaporize liquid fuel into vaporized fuel and combust it, it is possible to quickly convert liquid fuel into vaporized fuel and burn it using a rapid ignition system and a rapid vaporization system. I can do it.

〔Example〕

Embodiments of the vehicle heat retention device according to the present invention will be described in detail below with reference to the drawings.

In FIG. 1, one embodiment of a vehicle warming device according to the present invention is indicated generally by the numeral 10. FIG. 1 shows a side view of a vehicle comprising a cab 16 and a cargo shed 13 on which this vehicle heat insulation device 10 is mounted. Regarding this vehicle heat retention device 10, for example, air is taken in through an air cleaner of a diesel engine or a gasoline engine, a separate air cleaner, etc., or air is taken in directly from outside or indoors using an air intake pipe (not shown) using a blower (not shown). Combustion gas, that is, hot air, generated in the combustor 1 is introduced into the combustor 1 from the combustor 1 (not shown), and is sent to the heat exchanger 2 installed downstream of the combustor 1, where it exchanges heat with air. Warm air is sent into the room 4 containing the cargo $13 etc. from a plurality of hot air outlets 12 through the air blower 8 to keep the room 4 warm, that is, to heat it. For example, with regard to this vehicle heat retention device, cargo items such as foodstuffs such as bread and fresh foods such as vegetables are loaded into the loading shed 13, and the cargo items are maintained at a predetermined temperature for transportation, storage, etc. or
Alternatively, it can be used to heat the room 4. Between the front wheels 15 and the rear wheels 14 of the vehicle, there is a heating system including a combustor 1, a blower (not shown) that supplies combustion air to the combustor 1, a heat exchanger 2, a blower 7 for circulating heating air, and the like. units are located. Further, downstream of the heat exchanger 2,
A blower section 8 is provided which communicates with the warm air outlet 12 to blow hot air into the cargo warehouse 13. The ventilation section 8 is the loading shed 1
It is located at the bottom of 3. The air blowing section 8 communicates with a hot air outlet 12 on the side wall of the thermal warehouse, that is, a cargo warehouse 13, and a hot air outlet 12 on the rear side wall. A plurality of warm air outlets 12 on the side wall are provided in the lower part of the cargo shed 13 in the longitudinal direction.
Further, a plurality of warm air outlets 12 on the rear side wall are provided in the height direction close to the opening/closing door 3 of the cargo shed 13.

Therefore, the hot air outlet 12 on the rear side wall allows the loading room 1
An air curtain can be constructed at the entrance and exit of No. 3. Further, at least one hot air outlet 12 is provided with a shutter 20 that can close the hot air outlet 12 . In the figure, the shutters 20 are installed at two hot air outlets 12 formed in the front side wall of the room 4. By providing this shutter 20, different temperature regions, such as an A region, a B region, and a C region, can be formed in the room 4. Temperature sensors can be installed at appropriate locations in these areas, and the opening/closing operation of the shutter 20 is controlled in response to signals from these temperature sensors. In addition, loading shed 13
Both sides of the wall are formed into a double wall consisting of two walls (not shown), and there is a 1JiIil path (not shown) in the double wall.
is formed. Furthermore, an air collection port 5 for sucking air from the room 4 is formed at the front end and upper part of the cargo storage 13. It goes without saying that a filter or the like may be installed at the air collection port 5, and the air in the room 4 may be purified and circulated using the filter.

An air circulation passage 17 is formed between the vehicle cab 16 and the cargo storage 13. The air circulation passage 17 is provided with a recovery pipe 2I on one side of the vehicle in order to recover the air in the room 4 from the air collecting section 5 to the heat exchanger 2.

On the other side of the vehicle, a hot air passage is formed using the double-walled side wall of the loading shed 13, and this hot air passage is connected to a collection pipe (
(not shown), or form a blowing section for blowing out hot air, form a hot air outlet in the same manner as above, and connect the heat exchanger 2 to the blowing section via a distribution pipe. It may be configured so that it communicates with the

The blower 7 in the heating unit sends air to the heat exchanger 2 through an air intake pipe (not shown), and then passes through the air blowing part 8 of the heat exchanger 2 to the hot air outlet 12 to the cargo warehouse 1.
It functions to send warm air into the room 4 of 3 and circulate the air. A blower (not shown) is provided to supply combustion air to the combustor 1, and the exhaust gas, ie, combustion gas, generated in the combustor 1 is configured to be exhausted to the engine or the atmosphere. Of course, the blower for the combustor 1 can be configured to also serve as the blower 7 for circulating hot air. A heating unit used in this vehicle heat retention device 10, that is, a combustor 1, a heat exchanger 2, a blower 7, etc.
As for the power source that operates the control devices, etc. that control these, not only the DC power source such as the battery, generator, electric motor, etc. installed in the vehicle, but also the AC power source for home use, commercial use, etc. For general use, the combustor 1, the heat exchanger 2, the blower 7, etc., and the control device for controlling these, etc. can be configured so that the power sources can be switched.

FIG. 2 shows an example of the shank 20 applied to the hot air outlet 12 in the vehicle heat retention device according to the present invention. Regarding this shutter 2o, a guide 11 is attached to the blowing section 8, in which a through hole 24 corresponding to the hot air outlet 12 formed in the blowing section 8 is formed. A through hole closing member 9 is slidably fitted into the guide 11 so as to be guided through a roller 18. One end of a wire 25 is connected to one end of the hole closing member 9, and the other end of the wire 25 is wound around a pulley 23 driven by a stamping moke 22.

Further, a return spring 19 is provided between the guide 11 and the through hole closing member 9. Further, the stamping motor 22 is driven in response to signals from temperature sensors installed in each temperature region of the room 4. With such a configuration, when the stamping motor 22 is driven, the through hole closing member 9 slides on the guide 11 and closes the through hole 24.
is in an open state, and therefore the hot air outlet 12 is in an open state.

Next, although details of the combustor 1 and the heat exchanger 2 are not shown, it is preferable to use one having the following configuration, for example.

First, an example of the heat exchanger 1 will be explained.

A blower 7 is installed upstream of the heat exchanger 2 through an air intake pipe, etc.
is installed. A collecting pipe in the air circulation passage may be attached to the suction port of the blower 7. The heat exchanger 2 has a structure in which a heat absorption passage cylinder is arranged around the outer periphery of a heat flow passage cylinder, which is a double cylinder. The heat flow passage cylinder includes a heat flow outward passage cylinder and a heat flow return passage cylinder disposed around the outer circumference thereof. A combustor 1 is attached to one end of the heat flow outgoing cylinder. Therefore, the heat exchanger 2 has a heat flow path in the center through which the combustion gas from the combustor 1 passes, a heat transfer path in the middle to transfer the combustion heat of the combustion gas to the outer circumferential side, and a heat transfer path to radiate the combustion heat to the outside. It consists of heat absorption passages that turn cold air into hot air.

Moreover, the heat flow passage, the heat transfer passage, and the heat absorption passage are arranged coaxially with each other. The heat absorption passage cylinder constitutes an outer case of the heat exchanger 2, and is covered with a heat insulating material or the like. At both ends of the outer case, an air intake pipe is formed at one end and an air delivery pipe, that is, a blowing section is formed at the other end. A cup-shaped lid with fins is fixed to the end of the heat flow return path cylinder.

With this structure, the flow path for combustion gas, ie, the heat flow path and the heat transfer path, and the flow path for heated air for heating, ie, the heat absorption path, are completely cut off.

Further, the other end of the heat flow outward passage cylinder and one end of the heat flow return passage cylinder are in communication with each other, and a combustion gas exhaust port is formed at the other end of the heat flow return passage cylinder. This combustion gas may be configured to be sent to the intake system of the engine, and in that case, the configuration can be configured so that it can be switched to either an exhaust pipe that exhausts it directly to the outside or a feed pipe that sends it to the engine. You may. Further, heat receiving fins are arranged on the heat flow return path cylinder. Further, the heat receiving fins are formed inside the heat flow return path cylinder, and the heat radiation fins are formed outside the heat flow return path cylinder.

Next, an example of the combustor 1 will be explained. Combustor I! ? The combustion tube is divided into a vaporization chamber and a combustion chamber by a partition plate having a communication hole, and a vaporization device with a built-in glow plug for vaporization is arranged to penetrate the combustion chamber, and the vaporization device A jet port for spouting vaporized fuel is opened in the vaporization chamber, and an ignition glow plug is installed in the vaporization chamber. The vaporizing glow plug vaporizes the liquid fuel into vaporized fuel, and
Combustion air is taken in to generate vaporized fuel and a mixture, and the slight amount of oil droplets or mixture is ignited by the ignition glow plug, ml IC! The mixture is combusted in the combustion chamber. By using such a combustor 1, liquid fuel is rapidly vaporized into vaporized fuel, and the vaporized fuel is quickly ignited, thereby allowing rapid combustion. As a result, the combustor 1 can immediately send combustion gas to the heat exchanger 2, so that the function of the heat exchanger 2 can be quickly performed, and the interior of the vehicle can be rapidly heated.

The vehicle heat retention device according to the present invention is constructed as described above, and operates as follows.

In order to make the operation easier to understand, a case will be described in which the combustor 1 and the heat exchanger 2 are the same as those described above.

If the engine in the vehicle is running, use a DC power source or power source from the battery, generator, or electric motor installed in the vehicle, or if the engine in the vehicle is not running, i.e. when the vehicle is parked, etc. When the engine is not running, use the battery installed in the vehicle or the AC power source for home use (100V power supply), commercial use (200V power supply, etc.) to power up the blower 7 and combustor 1. The blower, the fuel supply device, the ignition glow plug, the vaporization glow plug, the control device 70 that controls them, etc. are operated. By operating these, liquid fuel is supplied to the combustor l, which is vaporized into vaporized fuel by the vaporizing glow plug, ignited by the ignition glow plug, and the vaporized fuel is mixed with combustion air from the blower. It is generated and becomes combustible. Combustion gas generated by the combustor 1 is blown into a heat flow path within the heat flow outgoing cylinder. The combustion gas blown into the heat flow passage is guided by the lid from the heat flow passage in the heat flow outward cylinder, makes a U-turn, and flows through the heat transfer passage in the heat flow return cylinder. Since a large number of heat receiving fins are installed in the heat transfer passage in the radial direction, combustion heat is removed from the combustion gas by the heat receiving fins, and finally the combustion gas is discharged into the engine or the atmosphere from a combustion gas exhaust port (not shown). on the other hand,
The air to be warmed is sucked in from the air circulation passage 17 by the blower 7, and blown from the blower 7 into the heat absorption passage cylindrical body of the heat exchanger 2 through an air intake pipe or the like. The sent air flows between heat radiation fins installed in the heat absorption passage. In the heat absorption passage, a large number of radial radiating fins are fixedly arranged on the outer periphery of the heat flow return cylinder, and the air passes between the radiating fins and is warmed by absorbing combustion heat from the radiating fins. . The warmed air turns into hot air, and then passes through a large number of radiating fins provided in the radial direction around the outer periphery of the lid body to be further warmed and flows. Next, the warmed air is sent to the blower section 8. The hot air sent to the air blowing unit 8 is supplied to a hot air outlet 12 formed on the inner side wall of the cargo shed 13 and a heated air outlet 12 provided in the height direction near the opening/closing door 3 and formed on the inner side wall. The air is blown out from the air outlet 12 into the interior 4 of the cargo warehouse 13. By the way, a shutter 2o is installed in the hot air outlet 12 formed in the side wall of the room 4, and a temperature sensor (not shown) is installed in each temperature region.
is installed, so in order to obtain the desired temperature range,
In response to signals from each temperature sensor, the stepping motor 22 can be operated to open and close the shack 20. Therefore, it is possible not only to make the room 4 into a uniform temperature range, but also to have different temperatures w.
It can also be controlled in the I region. The warm air keeps the room 4 warm, that is, heats it, and then passes through the filter of the air collection port 5 formed in the upper part of the cargo shed 13 and is sucked into the air circulation passage I7 by the action of the blower 7. Regarding one of the side walls, the air is sucked from the air circulation 1ffi path 17 through the recovery vibe 21 into the heat exchanger 2 of the heating unit.

The sucked air is sent from the scroll outlet of the blower 7 to the heat exchanger 2 through the air intake pipe again.

The air is heat-exchanged again by the heat exchanger 2 and is transferred from the hot air outlet 12 into the cargo storage 13 at mW. The above operations are repeated, and the inside of the cargo shed 13 is heated, that is, kept warm, to a predetermined temperature.

Although the embodiments of the vehicle heat retention device according to the present invention have been described in detail above, the details are not necessarily limited to these details. Although it is formed between the cab and the cargo storage of the vehicle, it is of course possible to form it on the side wall of the vehicle, for example. The air blower is formed within the double wall of the side wall, and this air blower is constructed either directly within the double wall or indirectly through a hot air pipe etc. fixed within the double wall. Of course, this is a good thing. Also,
Although the hot air outlet is formed at the bottom of the cargo shed, it may be formed at the middle or upper part, and is not limited to the lower part, but considering that the hot air rises, it is preferable to form it at the lower part. preferable. Furthermore, although the figure only shows a state in which the hot air outlet is formed on one side wall, it is not limited to one side wall. For example, a distribution pipe may be provided in the hot air outlet of the heat exchanger, Of course, hot air outlets can also be provided on the other side walls. In addition, the position, size, shape, etc. of the hot air outlet and air intake can be changed to the optimum state depending on the type and size of the cargo in the cargo shed, or the type of cargo formed in the cargo shed. Of course. In addition, a blower,
The arrangement of the heating unit consisting of a heat exchanger, combustor, etc. is not necessarily limited to this arrangement; for example, it can be installed at the rear side of the rear wheels of the vehicle, and it is suitable for large vehicles, flat-row vehicles, etc. The heating unit can be placed on the roof of the vehicle, and the heating unit 7) can be placed on the roof between the cab and the cargo shed in a large vehicle consisting of a cab and a cargo shed.

Further, although the vehicle heat insulation 'tiW according to the present invention is applied to a vehicle consisting of a cab and a cargo shed, it is of course also applicable to one-box cars, railway vehicles, trailers, etc. Furthermore, in some cases, the air circulation passage may be simply a circulation pipe having the same area. Furthermore, regarding humidity, depending on the items being loaded in the cargo hold, such as fresh foods and vegetables,
Of course, it is also possible to incorporate a humidifier such as an ultrasonic one and use a humidity sensor or the like to correlate humidity with temperature. Furthermore, if it is necessary to stir the air in the room, it goes without saying that an air stirring fan can be installed in the upper part of the room.

In the embodiment, the shutters are installed at two hot air outlets formed on the front side wall of the room, but the shutters can be installed at any hot air outlet as desired.
It goes without saying that a plurality of them can also be installed at separate locations.

〔Effect of the invention〕

The vehicle heat retention device according to the present invention is configured as described above, and has the following effects. That is, this vehicle heat retention device includes a heating unit including a combustor, a blower, a heat exchanger, etc. mounted on the vehicle, a large number of warm air outlets for blowing out hot air, and at least one
Shutters are installed at each of the warm air outlets, and an air collection port for indoor air intake is installed, so that the hot air can be effectively blown into the room in an optimum amount, and the temperature distribution in the room can be controlled. In addition to making the temperature uniform, depending on the case, different temperature regions can be formed in the room, and the combustor, the heat exchanger, etc. can be arranged in an extremely favorable condition from the viewpoint of safety, so that the room can be heated, that is, kept warm. By installing the combustor and the heat exchanger outdoors, it is possible to configure the structure to be extremely safe in terms of fire and exhaust gas.

Further, due to the arrangement of the blower, the heat exchanger, the combustor, etc., the flow resistance of the vIi ring air can be made low, and the flow of the warm air can be made extremely smooth. Furthermore, if both side walls of the vehicle are configured as double walls and a hot air passage for circulation is formed, the interior of the vehicle can be insulated, that is, kept warm. If at least a plurality of the warm air outlets are arranged in the height direction close to the opening/closing door of the vehicle, a kind of warm air air curtain is formed near the entrance/exit even when the loading shed is opened/closed, and the interior of the vehicle is The indoor temperature can be maintained at a predetermined temperature without escaping the temperature outside. Furthermore, since the combustor uses a glow plug to quickly vaporize liquid fuel into vaporized fuel and combust it, it is possible to quickly convert liquid fuel into vaporized fuel and burn it using a rapid ignition system and a rapid vaporization system. I can do it. Further, in some cases, the heating unit is arranged on the rear side wall of the vehicle, and the hot air outlet is located in a part where the indoor temperature is most likely to drop, and the temperature in the vicinity of the hot air outlet is kept as low as possible. The temperature can be high, and the heat exchanger and the hot air outlet can be located as close as possible to blow hot air into the room, quickly heating the room. In addition, the flow of circulating air has low resistance, the pressure loss of hot air can be greatly reduced, and the flow of heated air can flow extremely smoothly, thus being introduced with combustion gas. It is possible to efficiently exchange heat with the air, and without weakening the air inflow vector, it is possible to smoothly and efficiently exchange heat with the air. Further, when the air collection port is provided at an upper part of the chamber, and an air circulation passage for recovering the air in the room from the air collection port to the heat exchanger is formed between a cab of the vehicle and the chamber. The air can be circulated extremely efficiently, and the space can be used effectively as the air circulation passage. Further, the blower that supplies combustion air to the combustor and the blower that circulates the warm air can be used together or provided independently, and are selected depending on the purpose of use, the size of the heating capacity, the size of the room, etc. It is possible to greatly expand the scope of application.

Furthermore, the power source for operating the heating unit 7') can be configured to be switchable between an AC power source and a DC power source, so that, for example, when the internal combustion engine is operating, the generator, electric motor, battery, etc. installed in the vehicle can be switched. can be used to operate the combustor, the blower, etc. On the other hand, when the internal combustion engine is not operating, a buff battery can be used, but an AC power source for home use (100V rA) or commercial use (200V power supply) can be used, which can be used extremely effectively.

In addition, it has a very simple structure, is easy to handle, has few breakdowns, and is easy to maintain.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of a vehicle heat insulating device according to the present invention, Fig. 2 is a cross-sectional view showing the heat insulation device applied to Fig. 1, and Fig. 3 is a side view showing a conventional heat insulating storage for a vehicle. The side view shown and FIG. 4 are configuration explanatory views showing the combustion device used in the vehicle heat storage shown in FIG. 3. l-・-・Combustor, 2-・--m-Heat exchanger, i-1111・-Opening/closing door, 4-111 room, 5-・-Air collection port, 6・--1 ---Hot air passage, 7-----Blower,
8-----・Blower section, 9--・Through hole closing member, L
L--11--Vehicle heat insulation device, 11--Guide, 12--Warm air outlet, 13--Loading shed, 14--1--Rear wheel , 15-- Front wheel, 16
--- Cab, 17- ・Air circulation passage, 20 ---
・Shutter, 22・---1---Stepping motor,
24---.-Through hole. Patent applicant: Isuo Jidosha Co., Ltd. Agent Patent attorney: Onaka Naka $1 Figure 2

Claims (14)

[Claims] (1) A heating unit consisting of a combustor, a blower, a heat exchanger, etc. is mounted on a vehicle, and a large number of hot air outlets for blowing out hot air are provided in the side wall of the vehicle, and at least one of the hot air outlets A heat retention device for a vehicle, characterized by installing a shutter and further providing an air collection port for sucking indoor air. (2) The heat retention device for a vehicle according to claim 1, wherein at least the combustor and the heat exchanger are arranged outdoors. (3) The vehicle heat retention device according to claim 1, wherein the shutter is disposed at the hot air outlet located at the front side of the vehicle. (4) The vehicle heat retention device according to claim 1, wherein the shutter is slidably opened and closed. (5) The vehicle heat retaining device according to claim 1, wherein the shutter is opened and closed in response to a signal from a temperature sensor installed in the room. (6) The heating device for a vehicle according to claim 1, wherein the heating unit is disposed at a rear side of the vehicle. (7) Claim 1, characterized in that the heating unit is disposed on a side between front wheels and rear wheels of the vehicle.
The vehicle heat retention device described in section. (8) The heating device for a vehicle according to claim 1, wherein the heating unit is disposed between a cargo shed and a cab of the vehicle and at an upper part of the vehicle. (9) The heat retaining device for a vehicle according to claim 1, wherein the side wall portion of the vehicle is formed into a double wall, and a hot air passage is formed within the double wall. (10) An air circulation passage for recovering the indoor air from the air collection port to the heat exchanger is formed in a space between the cab and the cargo storage of the vehicle. The vehicle heat retention device according to item 1. (11) The vehicle heat retention device according to claim 1, wherein the combustor uses a glow plug to vaporize liquid fuel into vaporized fuel and combust it. (12) The vehicle heat retention device according to claim 1, wherein the blower for supplying combustion air to the combustor can also be used as the blower for circulating hot air. (13) The vehicle heat retention device according to claim 1, wherein the blower that supplies combustion air to the combustor and the blower that circulates warm air are independent. (14) The vehicle heat retention device according to claim 1, wherein the power source for operating the combustor, the blower, etc. can be switched to an AC power source or a DC power source.