JPH0613253B2 - Vehicle heat insulation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a combustor, a blower and a heat exchanger for heating or heating the interior of a vehicle such as a vehicle equipped with an internal combustion engine, a trailer, a railway, etc. The present invention relates to a vehicle heat insulation device equipped with a heating unit including the above.

[Conventional technology]

BACKGROUND ART Conventionally, as for indoor heating of a vehicle, there is one in which cooling water of an internal combustion engine is taken out by a hot water pipe, which is introduced to a heater device and indirectly performs heat exchange to send hot air into the room for indoor heating. .

In addition, a burner, that is, a combustor and a heat exchanger are provided in the intake passage of the engine, the combustor is ignited immediately after the engine is started, and the heat is used to warm the air by the heat exchanger to generate warm air, that is, warm air. A device introduced into a vehicle interior, in other words, a vehicle heating device that heats the interior of a vehicle by the amount of heat generated by burning fuel by a combustor irrespective of the internal combustion engine (see, for example, JP-A-60-252018). It is disclosed.

Further, the combustion gas of the combustor is supplied to the intake port of the engine via the heat exchanger, and the air heated by the heat exchanger is introduced into the passenger compartment of the engine (for example, Japanese Patent Laid-Open Publication No. No. 61-79864) is disclosed.

Further, for example, a vehicle heat retention device to which a heat exchanger for heating a vehicle disclosed in JP-A-61-188216 is applied, and combustion of a vehicle heat-reservoir disclosed in JP-A-61-211118. There is a device. These will be outlined with reference to FIGS. 3 and 4.

Referring to FIG. 3, in a combustion device 60 for a vehicle warming box, an intake manifold of an internal combustion engine 61 and an 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 warmed by the heat exchanger 66 passes through the conduction path 6
The hot air is blown out from the warm air outlet 68 into the heat insulation box 67 through 9.

In FIG. 4, the outline of the combustion device 60 of the vehicle heat storage is shown. The heat exchanger 66 introduces the air outside the vehicle from the air intake port into the inside of the heat exchanger 66 from the air intake port 79 via the air cleaner 63 and the blower 77, and the burner 65.
The air that has become warm air by exchanging heat with the combustion gas from is discharged from the air outlet 80 to the conduit 69. Burner 65
A vaporization plug 75 and an ignition plug 76 that are connected to the fuel supply device 74 are installed therein. The control device 70 receives the temperature signal from the room temperature sensor 78 provided in the heat insulation box 67 and controls the burner 65. In the figure, 71 is a control device 7.
The operation switch of 0, 72 is a battery, and 73 is a fuel tank.

[Problems to be solved by the invention]

However, in the case of performing indoor heating by using the cooling water of the internal combustion engine, it takes a long time for the heater body to send out warm air because the temperature rising speed of the cooling water is slow, and the heater is in the meantime. It has almost no heating function. That is, in the present situation, it takes about 10 minutes or more for a gasoline engine and about 20 minutes or more for a diesel engine until the engine warm-up is completed. During this time,
Especially in cold regions, winter, etc., the inside of the vehicle is cold, and the defroster for removing frost, ice, etc. from the windows of the vehicle cannot fully function.

Further, regarding an automobile heating system or an engine warming system that uses a combustor regardless of the internal combustion engine, it takes time and labor for the combustion cycle, exhaust gas treatment, etc., and a complicated mechanism and control device are required. There are problems such as

Further, in the combustion device for the vehicle heat storage shown in FIG. 3, the rapid ignition system and the rapid vaporization system are used to promptly burn the liquid fuel into vaporized fuel for combustion, and the combustion heat is used for efficient and rapid heating. Clean air that generates air and does not contain exhaust gas can be sent into the vehicle, but warm air is effectively supplied into the heat-retaining cabinet and the resistance to circulating air is low. Therefore, there is a problem that needs to be improved.

Therefore, an object of the present invention is to solve the above problems, to provide a combustor that uses a liquid fuel such as light oil and kerosene, and to quickly turn the liquid fuel into a vaporized fuel by a rapid ignition system and a rapid vaporization system. The heating air is efficiently and quickly generated from this combustion heat to send clean heating air that does not contain exhaust gas to the interior of a vehicle or the like. The inside of the room is heated, that is, kept warm, the resistance of the circulating air is low, the inside of the room is maintained in a good temperature distribution, and the combustor, the heat exchanger, etc. are arranged in an extremely preferable arrangement for safety. However, it is another object of the present invention to provide a heat insulation device for a vehicle, which can maintain heat of a load or the like.

[Means for solving problems]

The present invention is configured as follows to achieve the above object. That is, according to the present invention, a heating unit including a combustor, a blower, and a heat exchanger is mounted on the rear part of a vehicle, and a large number of warm air outlets for blowing warm air are provided only on the rising part of the rear part of the room. An air collecting port for suction is provided in the front part of the room, and air from the air collecting port is mounted on the rear part of the vehicle through a warm air passage for heating the room formed on both side wall parts of the vehicle. Further, the present invention relates to a heat insulation device for a vehicle, which is sent to the heat exchanger.

Further, in this vehicle heat retention device, at least the combustor and the heat exchanger are arranged outside the room.

Further, in this vehicle heat retention device, the side wall portion is formed as a double wall, and the warm air passage is formed in the double wall.

In this vehicle heat retention device, the warm air outlet is formed on the rear side wall of one rear wheel.

Further, in this vehicle heat retention device, at least a plurality of the hot air outlets are formed in the height direction close to the opening / closing door of the cargo hold of the vehicle.

In this vehicle heat retention device, the power supply for operating the heating unit can be switched to an AC power supply or a DC power supply.

[Action]

The vehicle heat retention device according to the present invention is configured as described above and operates as follows. That is, this vehicle heat retention device is equipped with a heating unit such as a combustor, a blower, and a heat exchanger in a vehicle, and a large number of hot air outlets for blowing hot air are provided in the rear portion of the vehicle to suck in indoor air. The air collecting port is provided in the front part of the room, and the air from the air collecting port is circulated to the heat exchanger through both side wall parts of the vehicle, so that the temperature of the room is most likely to drop. The hot air outlet is located at, and the temperature in the vicinity of the hot air outlet can be maintained as high as possible. Moreover, hot air can be blown out into the room vigorously, and the blower,
Due to the arrangement of the heat exchanger, the combustor, etc., the flow of circulating air can be made low in resistance, and the flow of warm air can be made extremely smooth. In addition, since the warm air passage for recovery is formed in the double wall of the side wall portion, the function of heat insulation, that is, heat retention in the room is fulfilled. Since at least a plurality of the hot air outlets are formed in the height direction close to the opening / closing door of the vehicle, a kind of hot air curtain is formed near the entrance / exit even when the cargo storage is opened / closed. Further, since the combustor uses a glow plug to rapidly vaporize and burn liquid fuel into vaporized fuel, the rapid ignition system and the rapid vaporization system can promptly combust the liquid fuel as vaporized fuel. You can

〔Example〕

An embodiment of a vehicle heat insulation device according to the present invention will be described below in detail with reference to the drawings.

In FIG. 1, a vehicle heat retention apparatus according to the present invention is generally indicated by reference numeral 10. In this vehicle heat insulation device 10, for example, air taken in through an air cleaner of a diesel engine or a gasoline engine, a single air cleaner, or the like, or air taken in directly from the outside or a room is blown (not shown) by an air intake pipe (not shown). Incorporation into the combustor 1 from (not shown),
Combustion gas generated in the combustor 1 is sent to a heat exchanger 2 installed downstream of the combustor 1, and heat is exchanged with air by the heat exchanger 2, and a warm air blowout port 12 through a blower unit 8 to a cargo storage space or the like. The warm air is blown into the room 4 to keep the room 4 warm.

Regarding this vehicle heat retention device, for example, food items such as bread and fresh food items such as vegetables are loaded into the cargo storage 13, and the cargo items are transported and stored while being maintained at a predetermined temperature. Etc., or can be used to heat the room 4.

This vehicle heat retention device 10 is shown to be applied to a vehicle in which a cargo storage 13 covered with a heat insulating wall is mounted on a cargo bed of the vehicle. A heating unit having a combustor 1, a blower (not shown) for supplying combustion air to the combustor 1, a blower 7, and a heat exchanger 2 is mounted on the rear side of the rear wheel 14 of the vehicle.

An air blower 8 is provided downstream of the heat exchanger 2 for communicating the warm air to the warm air outlet 12 in order to blow the warm air into the cargo storage 13. The blower unit 8 is arranged below the cargo storage 13, that is, at the bottom. The blower unit 8 communicates with the warm air outlet 12, which is located on the rear side wall of the heat storage box or the cargo storage box 13. As shown in FIG. 2, both side walls of the cargo storage 13 are formed into a double wall composed of two side walls 18 and 19, and the warm air passage 6 is formed in the double wall.
Are formed directly or indirectly via a pipe or the like. At least a plurality of hot air outlets 12 are formed in the height direction close to the open / close door 3 of the cargo storage 13.

When the opening / closing door 3 of the cargo storage 13 is opened, an air curtain can be formed at the entrance and exit of the cargo storage 13 by these hot air outlets 12. Further, an air collecting port 5 for collecting the air in the room 4 is formed at the front end portion and the upper portion of the cargo storage 13. It goes without saying that a filter or the like may be installed in the air collecting port 5 to clean the air in the room 4 and circulate it. Vehicle cab 16
An air circulation passage 17 is provided between the cargo storage 13 and the cargo storage 13. The air circulation passage 17 communicates with the warm air passages 6 on both side walls of the vehicle in order to recover the air in the room 4 from the air collecting port 5 to the heat exchanger 2.

The end portion of the warm air passage 6 on one side wall is connected to the suction port of the blower 7 for circulating warm air. The end portion of the warm air passage 6 on the other side wall is communicated with the recovery pipe 11 that communicates with the suction port of the blower 7 for circulating warm air. This blower 7 sends air to the heat exchanger 2 through an air intake pipe 20, and then passes through a blower section 8 of the heat exchanger 2 to blow out the hot air outlet 1
The hot air is sent from 2 to the room 4 of the cargo storage 13 to circulate the air.

A blower that supplies combustion air to the combustor 1 is provided, and the exhaust gas generated in the combustor 1, that is, the combustion gas, is exhausted to the engine or the atmosphere.

The heating unit used for the vehicle heat retention device 10, that is, the power source for operating the combustor 1, the heat exchanger 2, the blower 7, and the like, and the control device for controlling these, includes a battery installed in the vehicle, a power generator, and the like. Of the combustor 1, the heat exchanger 2, the blower 7 and the like, and a control device for controlling them so that they can be applied not only to the DC power source of the electric machine, electric motor, etc. but also to the AC power source for home use, commercial use, etc. Can be configured to switch power supplies. In the figure, 15 indicates a front wheel.

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

First, an example of the heat exchanger 2 will be described.

A blower 7 is installed upstream of the heat exchanger 2 through an air intake pipe 20. A collecting pipe (detailed structure is not shown) in the circulating air intake passage is attached to the suction port of the blower 7. The circulation air intake passage may be configured so as to become gradually narrower toward the downstream side, or may be a simple circulation pipe. The heat exchanger 2 has a structure in which a heat absorption passage cylinder is arranged on the outer circumference of a heat passage cylinder that is a double cylinder. The heat flow passage tubular body,
It is composed of a heat flow outward tube and a heat flow inward tube arranged around the outer periphery thereof. The combustor 1 is attached to one end of the heat flow outward passage tube body. Therefore, the heat exchanger 2 radiates the heat flow passage through which the combustion gas from the combustor 1 passes in the central portion, the heat transfer passage through which the combustion heat of the combustion gas is transmitted to the outer peripheral side in the middle portion, and the combustion heat to the outer portion. It is composed of an endothermic passage that turns cold air into warm 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 tubular body constitutes an outer case of the heat exchanger 2,
It is covered with heat insulating material. Both ends of the outer case are
An air intake pipe 20 is formed at one end and an air delivery pipe, that is, an air blower 8 is formed at the other end. A cup-shaped lid with fins is fixed to the end of the heat flow return tube. Therefore, the flow passage of the combustion gas, that is, the heat flow passage and the heat transfer passage, and the flow passage of the air to be heated for heating are completely cut off.

Further, the other end of the heat-flow-outgoing-passage tubular body communicates with one end of the heat-flow-backward-passing tubular body, and a combustion gas discharge port is formed at the other end of the heat-flow-backward traveling tubular body. The combustion gas may be sent to the intake system of the engine, in which case it may be switched between an exhaust pipe for direct exhaust to the outside and a send pipe for sending to the engine. Good.
Further, heat receiving fins are arranged in the heat flow return tube body. Further, a radiation fin is arranged in the heat absorption passage tubular body. From the viewpoint of heat conduction, it is preferable that the heat receiving fins and the heat radiating fins are integrally provided in the heat flow return tube body. In other words, the heat receiving fins are formed inside the heat flow return path tubular body, and the heat radiation fins are formed outside the heat flow return path tubular body.

Next, an example of the combustor 1 will be described. The combustor 1 is composed of a combustion cylinder, and the combustion cylinder is divided into a vaporization chamber and a combustion chamber by a partition plate having a communication hole, and a vaporization device having a glow plug for vaporization is disposed so as to penetrate the combustion chamber. An ejection port for ejecting vaporized fuel vaporized by the vaporizer is opened in the vaporization chamber, and an ignition glow plug is installed in the vaporization chamber. The vaporization glow plug vaporizes the liquid fuel into vaporized fuel, and the combustion air is taken in to produce vaporized fuel and a mixture, which is ignited by the ignition glow plug to slightly existing oil droplets or mixture. , Burning the air-fuel mixture in the combustion chamber.

By using such a combustor 1, the liquid fuel is rapidly vaporized to vaporized fuel, and the vaporized fuel is rapidly ignited, that is, ignited, thereby enabling rapid combustion. As a result, the combustor 1 can immediately send the combustion gas to the heat exchanger 2, can quickly perform the function of the heat exchanger 2, and can be used for rapid heating of the interior of a vehicle or the like.

The vehicle heat retention device 10 is configured as described above and operates as follows. In order to make it easier to understand the description of the operation, the case where the combustor 1 and the heat exchanger 2 described above are used will be described.

When the engine in the vehicle is operating, use the DC power supply or power source from the battery, generator or motor installed in the vehicle, or when the engine in the vehicle is not operating, that is, when the vehicle is parked, etc. When the engine is not operating, the heating unit, that is, the blower 7, the combustion is performed by using the battery mounted on the vehicle or the AC power source for household (100V power source), commercial use (200V etc. power source). The blower, the fuel supply device, the ignition glow plug, the vaporization glow plug, and the control device for controlling them are operated. By these operations, the liquid fuel is supplied to the combustor 1, the liquid fuel is vaporized into the vaporized fuel by the vaporization plug, and is ignited or ignited by the ignition glow plug, and the vaporized fuel is converted into the combustion air from the blower. The air-fuel mixture is generated and becomes a combustion state.

The combustion gas generated by the combustor 1 is blown into the heat flow passage in the heat flow outward cylinder. The combustion gas blown into the heat flow passage makes a U-turn while being guided by the lid from the heat flow passage of the heat flow forward passage tube, and flows through the heat transfer passage in the heat flow return passage cylinder.
Since a large number of heat receiving fins are installed in the heat transfer passage in the radial direction, the combustion gas is deprived of combustion heat by the heat receiving fins and finally discharged from the combustion gas exhaust port (not shown) into the engine or the atmosphere. On the other hand, the warmed air is sucked from the air circulation passage 17 by the blower 7, and blown from the blower 7 through the air intake pipe 20 into the heat absorbing passage cylinder of the heat exchanger 2. The sent-in air flows through between the radiation fins installed in the heat absorption passage. A large number of radial heat radiating fins are fixedly arranged on the outer periphery of the heat flow return cylinder in the heat absorbing passage, and the air passes between the heat radiating fins to absorb the combustion heat from the heat radiating fins, that is, it is taken away and warmed. . The warmed air becomes warm air, and then is further warmed and flows through a plurality of heat radiation fins radially provided on the outer periphery of the lid body.

Next, the warmed hot air is blown into the blower unit 8. The warm air blown into the blower unit 8 is blown into the room 4 of the cargo storage 13 from a warm air outlet 12 provided in the height direction near the opening / closing door 3 on the side wall 19 of the cargo storage 13. The warm air keeps the room 4 warm, that is, heats it, and then passes through the filter of the air collecting port 5 formed in the upper part of the cargo storage 13 and the air circulation passage 1
7 is sucked into the fan 7 by the action of the blower 7. The sucked air is again fed from the scroll outlet of the blower 7 to the air intake pipe 2
It is sent to the heat exchanger 2 through 0. The heat of the air is again exchanged by the heat exchanger 2, and the cargo storage 1
It is blown into 3 and circulated. By repeating the above operation, the inside of the cargo storage 13 is kept at a predetermined temperature.

Although the embodiment of the vehicle heat retention device has been described above in detail, the invention is not necessarily limited to these details. For example, in the drawing, the air circulation passage is formed between the cab of the vehicle and the cargo storage. However, it goes without saying that it may be formed on the side wall of the vehicle, for example. The hot air passage is formed in the double wall of the side wall, but this hot air passage is configured directly in the double wall or indirectly through a hot air pipe or the like fixed in the double wall. Of course, the side wall of the cargo hold may be a single wall.

Further, the position, size, shape, etc. of the hot air outlet and the air collecting port can be changed to an optimum state depending on the type, size, etc. of the cargo in the cargo storage, or, for example, shelves formed in the cargo storage. Of course.

Further, although this vehicle heat retention device is applied to a cargo truck, it is needless to say that it can be applied to a one-box car, a railway vehicle, a trailer, and the like. Further, regarding the humidity in the cargo storage, items to be loaded in the cargo storage, for example, for those that need to ensure a predetermined humidity according to fresh food, vegetables, etc., combine a humidifier with ultrasonic waves, etc., Of course, the humidity can also be adjusted in relation to the temperature.

〔The invention's effect〕

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 is equipped with a heating unit having a combustor, an air blower, and a heat exchanger in a vehicle, and a large number of hot air outlets for blowing hot air are provided in the rear portion of the vehicle to suck in indoor air. An air collecting port is provided in the front part of the room, and air from the air collecting port is circulated to the heat exchanger through both side wall parts of the vehicle. The hot air outlet is located so that the temperature in the vicinity of the hot air outlet can be made as high as possible, and the heat exchanger and the hot air outlet can be located as close to each other as possible. While warm air can be blown into the room to quickly heat the room, the flow of circulating air has a low resistance, and the pressure loss of the warm air can be greatly reduced.
The warmed air can flow very smoothly.

Therefore, the combustion gas and the introduced air can be efficiently heat-exchanged, the air can be smoothly introduced between the heat radiation fins without weakening the inflow vector of the air, and the air can be efficiently introduced. Heat exchange can be performed.
Moreover, at least the combustor and the heat exchanger are arranged outside the vehicle and in the lower rear part of the rear wheel, which is extremely preferable in terms of safety against fire and exhaust gas.

Further, when the hot air passage is formed in the double wall of the wall portion, not only the warm air can be smoothly sent into the room, but also the function of heat insulation, that is, heat retention in the room can be achieved.

In particular, since 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 kind of warm air curtain is formed near the entrance / exit even when the cargo storage is opened / closed. The temperature change in the room can be reduced to keep the room at a substantially constant temperature.

Further, the air collecting port is provided in the upper part of the chamber, and an air circulation passage for collecting air in the chamber from the air collecting port to the heat exchanger is formed between the cab of the vehicle and the chamber. Therefore, the air can be circulated extremely efficiently, and the space can be effectively used as the air circulation passage.

Further, since the power source for operating the combustor and the blower can be configured to be switchable to an AC power source or a DC power source, for example, when the internal combustion engine is operating, a generator, an electric motor, a battery mounted on the vehicle. Etc. can be used to operate the combustor, the blower, and the like. On the other hand, when the internal combustion engine is not operating, the battery can be used, but it is for home use (100V power supply), business use (20
AC power source (0V power source) can be used and can be used very effectively

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a vehicle heat insulation apparatus according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view showing a conventional vehicle heat storage box, and FIG. FIG. 4 is a structural explanatory view showing a combustion device used in the vehicle heat storage shown in FIG. 3. 1 ... Combustor, 2 ... Heat exchanger, 3 ... Open / close door, 4 ...
Indoor: 5 ... Air collecting port, 6 ... Warm air passage, 7 ... Blower, 8 ... Blower, 10 ... Vehicle heat insulation device, 11 ...
Recovery pipe, 12 ... Warm air outlet, 13 ... Cargo store, 1
4 ... rear wheel, 16 ... cab, 17 ... air circulation passage,
18, 19 ... Side wall.

Claims (6)

[Claims] 1. A heating unit equipped with a combustor, an air blower and a heat exchanger is mounted on the rear part of a vehicle, and a large number of warm air outlets for blowing out warm air are provided only on the rising part of the rear part of the room to suck in indoor air. An air collecting port for the front of the room,
Insulation from the air collecting port is sent to the heat exchanger mounted in the rear part of the vehicle through a hot air passage for heating the room formed in both side wall parts of the vehicle to keep the vehicle warm. apparatus. 2. The vehicle heat retention device according to claim 1, wherein at least the combustor and the heat exchanger are arranged outside the room. 3. The vehicle heat retention device according to claim 1, wherein the side wall portion is formed as a double wall, and the warm air passage is formed in the double wall. . 4. The vehicle heat retention apparatus according to claim 1, wherein the warm air outlet is formed on a rear side wall of one rear wheel. 5. The vehicle heat insulation according to claim 1, wherein at least a plurality of the hot air outlets are formed in a height direction close to an opening / closing door of a cargo hold of the vehicle. apparatus. 6. The vehicle heat retention device according to claim 1, wherein the power source for operating the heating unit is configured to be switchable to an AC power source or a DC power source.