JPS59114106A - Regenerator of space heating apparatus for vehicle - Google Patents

Abstract

PURPOSE:To enable space heating even after stop of an engine by an apparatus wherein regenerating materials are filled in a regenerator and a heater is connected to permit heating, in the titled space heating apparatus in which engine cooling water is circulated to an engine exhaust pipe through the regenerator. CONSTITUTION:During driving of an automobile, a bypass valve 31 is changed over to introduce engine exhaust gas to a regenerator 30 through a bypass pipe 33 and then discharge the gas into an exhaust pipe 2. During this time, heat is stored in the regenerator 30 and engine cooling water is circulated to be heated in the regenerator 30 even after stop of the engine, so that heated water is supplied to a heating apparatus 4. After stop of the vehicle or before start of the engine, fuel is supplied to a heater 36 housed in the regenerator 30 and then ignited to heat the regenerating materials. This supplies the engine cooling water to the heating apparatus 4 after being warmed. With such arrangement, it becomes possible to make heating even during stop of the engine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat storage device for a vehicle heating system, and particularly to a heat storage device that can continue to store heat even after the engine is stopped. ``Conventional heat storage devices of this type include those shown in FIGS. 1 and 2, for example. This heat storage device 3 is connected to the engine 1
The exhaust pipe 2 is partially bypassed at the pulp 12 attachment part,
A water conduit pipe 1 is connected to the bypass portion, and a water conduit pipe 8 is connected from the heat storage device 3 to a water conduit pipe 8 for engine cooling water circulation that connects the radiator 1 and the heater core 6 of the heating device 4.
1 is extended. A switching valve 9 is installed at the connection between the water pipe 8 and the water pipe 11. By operating this switching valve 9, hot water can be circulated between the engine 1 and the heater core 6 at certain times. At other times, the heat storage device 3 and heater core 6
Hot water is circulated between the In the heating device 4, air is sent by a proar disposed upstream of the heater core 6, and warm air is blown out from the outlet. Such a heat storage device 3 has seven flange-shaped connecting portions 15a and 15b.
It consists of a capsule 15 which has a heat storage material 16 and is filled with a heat storage material 16, and an outer casing 1T that encloses the capsule 15 from the outside. The capsule 15 consists of an inner cylinder 18 and an outer cylinder 19. A heat storage material 16 is sealed in the inner cylinder 18, and an exhaust passage 21 extending in the axial direction is formed in the center of the capsule.
1 communicates with the exhaust pipe 2 via connecting portions 15a and 15b. A water conduit 11 extends from the outer cylinder of the capsule 15, and a water jacket 20 communicating with the water conduit 11 is formed between the inner cylinder 18 and the outer cylinder 19. Therefore, in the heat storage device 3, the engine exhaust gas is connected to the connecting portion 15a.
The heat storage material 16 is heated while the heat storage material 16 is passed through the exhaust passage 21 and flows out through the connection part 15b, and engine cooling water is passed through the water jacket 20 and heat is transferred to the water in the water jacket 20 through the inner cylinder 18. The hot water is transferred to the heater core 6 through the water pipe 1'1. Note that in the drawing, reference numeral 10 indicates a pump that circulates hot water between the heat storage device 3 and the heater core 6, and reference number 22 indicates a heat insulating material that prevents heat leakage to the outside of the heat storage device 3.

By the way, the heat storage device 3 of such a conventional vehicle heating system
In this case, the heat storage material 16 is simply heated by the engine exhaust gas. However, the heat storage device 3 itself is designed and manufactured so that it can be mounted on a vehicle, so it is relatively small. .

Therefore, with such a volume of the heat storage device 3, the amount of heat stored is small, and once the heat is stored, if the vehicle is stopped for a long time, it will be consumed by self-heat radiation, and it can no longer be used for heating. There was a problem.

The present invention has been made by focusing on such conventional problems, and its purpose is to enable the heat storage device to not only store heat from the engine exhaust, but also to enable the heat storage device itself to store heat as necessary. By doing so, the above-mentioned conventional problems are solved.

In order to achieve the above object, the present invention provides a porous body in which a heating element is embedded under a heat storage material loaded in a heat storage device, a device for supplying fuel to the porous body, and a device for supplying fuel to the porous body, and a device for supplying fuel to the porous body. A catalyst for catalytic combustion of fuel and an exhaust passage for the combustion gas to pass through are installed, and the fuel is slowly combusted in a heat storage device to generate heat. This heat can be stored in a heat storage material and used as a heat source for a heating device. The summary is what we did.

It is convenient to use a heating wire such as a nichrome wire connected to a power source as the heating element, and to use a liquid fuel such as petroleum.

In this way, by heating the heating element, the fuel evaporates and comes into contact with the catalyst, where it is combusted. The heat generated by this combustion is stored in the heat storage material, while the combustion gas is discharged to the outside of the heat storage device through the exhaust passage. For this reason, the heat storage device can store heat without relying on engine exhaust, so even if the engine has stopped for a long time or on winter mornings, the heat storage device can be kept working to quickly heat the vehicle interior. be able to.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 and FIG. 4 are diagrams showing an embodiment of the present invention. In FIG. 3, a bypass pipe 33 is branched and connected to the exhaust pipe 2 of the engine 1 via a bypass pulp 31, and a heat storage device 30 is connected to the bypass pipe 33. As shown in Figure tB4, this heat storage device 30 includes a heat storage capsule 35 disposed inside the heat storage capsule 34, and a heat storage capsule 35 disposed inside the heat storage capsule 35 within the housing 34. It consists of a heat generating device 36. The heat storage capsule 35 is made up of a cylindrical body that is connected to an exhaust gas introduction part 3T to which the bypass pipe 33 is connected, and an exhaust gas discharge part 38.
A heat storage material 16 is loaded in the center thereof.

At the outer periphery of the heat storage material 16, there is an exhaust passage 39 that communicates with the exhaust gas introduction part 31 and the exhaust gas discharge part 38, and through which the engine exhaust gas circulates.
is the formation U. Cooling water passages 40 are formed inside the heat storage material 16 at predetermined intervals, and a cooling water pipe 41 and a cooling water outlet pipe for introducing and drawing out engine cooling water are formed in the cooling water passage 40. 42 is connected to the heat storage capsule 35. On the other hand, the housing 34 suspends and supports the heat storage capsule 35 in a hollow space, and forms a hot air passage 43 between the heat storage capsule 35 and the exhaust passage 4 above the housing 34 .
Connected to 4.

The heat generating device 36 includes a combustion table 45 made of porous or fibrous material, and a fuel pipe 46 that supplies fuel to the combustion table 45.
and the fuel outlet part of the combustion table 45 (the attached catalyst 41
It consists of An electromagnetic pulp 48 that regulates the flow of fuel is connected to the fuel pipe 46, and a float chamber 49 is connected to the fuel pipe 46. A float 56 is arranged in this float chamber 49 to adjust the amount of fuel supplied. It is supposed to be done. Further, a gap 52 is formed below the combustion table 45 through which fresh air is supplied from outside the housing 34 through an air filter 51, and between the upper part of the combustion table 45 and the exhaust passage 39, fuel is A combustion chamber 53 is formed in contact with the catalyst. Furthermore, a heating element 54 made of nichrome wire or the like and a temperature sensor 55 are buried in the combustion table 45, and
The heating element 54 and the temperature sensor 55 are electrically connected.

In the heat storage device 3u having such a configuration, in order to perform a heat storage action while driving the vehicle, the bypass pulp 31 is switched to guide the engine exhaust gas to the bypass pipe 33, and this exhaust gas flows from the exhaust introduction part 37 to the exhaust passage 39. The air flows into the air, circulates through the air, and stores heat in the heat storage material, while flowing out from the exhaust outlet portion 38 and returning to the exhaust pipe 2. Therefore, a sufficient amount of heat is stored in the heat storage device 30 due to the heat storage effect, and even after the vehicle has stopped, the engine cooling water is circulated through the cooling water passage 40 and supplied to the heating device 4 to heat the vehicle interior. It is possible to make the heat storage device 30 perform its original function of continuous operation.

In addition, if it is necessary to supply hot water to the heating device 4 for a long time after the vehicle has stopped, or before starting the engine, current can be conducted to the heating element 54 by operating a switch to stop the combustion stage. 45 is heated, and the electromagnetic valve 48 is turned on to supply fuel to the combustion table 45. For example, petroleum such as light oil or molten oil, or alcohol is used as the fuel, and the flow rate thereof is regulated by a float 50. Since the combustion table 45 is porous or fibrous, the fuel soaks into the combustion table 45, is heated, evaporates, and is heated by the catalyst 41.
It burns in contact with and generates combustion gas. This combustion gas rises through the hot air passage 43 and not only heats the heat storage capsule 35 from its surroundings, but also keeps the entire heat storage device 30 warm. As a result, the engine cooling water flowing through the cooling water passage 40 is warmed, so that by operating the pump 10, hot water can be sent to the heating device 4 to perform a heating operation. During such heat storage operation, electricity is supplied to the heating element 54 as follows.
The temperature sensor 55 measures the temperature inside the combustion table 45, and when this temperature becomes higher than the set temperature, the energization is automatically cut off, and when it becomes lower than the set temperature, the energization is turned on. . If it is necessary to perform rapid heating after the engine has been stopped for a long time, the switching valve 9 is operated to circulate engine cooling water between the heater core 6 and the heat storage device 30, and the pump 10 is used to cool the engine. It is sufficient to circulate the water and radiate heat through the heater core 6).

In addition, in the embodiment described above, a method was shown in which liquid fuel such as petroleum was used in the heat generating device, but gaseous fuel such as fuel gas or solid fuel may also be used for heating. .

As explained above, according to the present invention, a heat generating device is installed below the heat storage material filled in the heat storage device, and the heat storage material is heated not only by the engine exhaust but also by hot air from the heat generating device, and the heat storage material is heated. This allows the heat stored in the heat storage device to be retained for a long time, making it possible for the heating system to operate even after the engine has stopped.

Furthermore, in winter, by allowing the heat storage effect of the heat generating device to continue at night, a number of effects can be obtained, such as being able to rapidly heat the interior of the vehicle when starting the engine the next morning.

[Brief explanation of the drawing]

Fig. 1 is a piping diagram showing an example of a conventional heat storage device connected to a vehicle heating system, Fig. 2 is a sectional view showing an example of a conventional heat storage device, and Fig. 3 is a heat storage according to an embodiment of the present invention. FIG. 4 is a piping diagram showing a state in which the heat storage device is connected to a heating device for a vehicle, and FIG. 4 is a sectional view showing a depiction of the heat storage device according to the above embodiment. 1... Engine 2... Exhaust pipe 3.30...
・Heat storage device 4...Heating device 5...Proa
6...Heater core 8...Water pipe 1.
...Switching valve 16...Heat storage material 36...Heat generating device 31...Exhaust gas introduction section 38...Exhaust gas outlet section 39
...Exhaust passage 41...Cooling water introduction pipe 42...
・Cooling water outlet pipe 43...Hot air passage 45...Combustion stand 46...Fuel pipe 41...Catalyst
54...Heating element patent applicant: Nissan Motor Co., Ltd. Agent: Patent attorney, Hajime Dobashi 5. ,1

Claims (1)

[Claims] In a vehicle heating system in which a heat storage device is connected to the exhaust pipe of the engine and engine cooling water is circulated through the heat storage device and sent to the heater core, the heat storage device contains a heat storage material that is heated by the engine exhaust gas. is filled, and a heat generating device and a hot air passage through which hot air from the heat generating device circulates are provided at a position adjacent to the heat storage material, so that the heat storage material can also be heated by the heat generating device. Features: Heat storage device for vehicle heating system.