JP5801593B2 - Thermal storage heating system for vehicles - Google Patents

Description

  The present invention relates to a regenerative heating apparatus for a vehicle that makes it possible to promote warm-up of equipment mounted on the vehicle at the time of cold start and temperature rise of fluids using exhaust heat of the vehicle equipment. It is.

  In an automobile (also simply referred to as a vehicle), at the time of cold start, fluids such as cooling water and lubricating oil, which are indispensable for the operation of each device, are in a low temperature state together with each device such as an engine. When these devices and fluids are at a low temperature, there are problems that the device does not operate properly and that causes large friction when the device operates. Therefore, it is desired to be able to quickly warm up the devices and heat up the fluids. In particular, energy efficiency is good if the exhaust heat of the devices installed in the vehicle is used to promote the warm-up of each device and the temperature rise of the fluids.

  As such a technique, for example, Patent Document 1 discloses a cooling device for an engine for the purpose of more quickly warming up the engine. The apparatus includes a heat storage tank configured to store the cooling medium while keeping the temperature, and the warm cooling medium stored in the heat storage tank is introduced into the cylinder block when the engine is started. Since the warm cooling medium introduced in this way warms the engine, the cylinder block is warmed up when the engine is started (preheat).

Furthermore, after that, before the warm-up operation ends, the cooling medium is discharged from the cylinder block to the heat storage tank. Thereby, there is no escape of heat from the cylinder block to the cooling medium, and the warm-up operation is performed quickly.
The warm cooling medium stored in the heat storage tank is discharged from the cylinder block to the heat storage tank after a while has passed since the previous engine stop.

  Further, although it is not related to automobiles and not related to warm-up of equipment, Patent Document 2 discloses that electric power is generated by driving a generator and high-temperature hot water is generated using heat generated in an engine. In relation to a diesel engine for cogeneration that is stored in a heat storage tank and supplies hot water or steam to the outside, a technique for maintaining the temperature of the hot water stored in the heat storage tank at a high temperature using the heat of EGR gas is disclosed. .

  In this technology, in order to generate externally supplied hot water or steam, cold water from the outside is introduced into an EGR gas heat exchanger (EGR cooler) provided in the EGR pipe to cool and introduce the EGR gas. Warm the cold water, introduce this slightly warm water into the engine cooling water heat exchanger to cool the engine cooling water, further warm the slightly warm water introduced, and heat the warm water to introduce the engine exhaust It is further heated in a vessel, heated to a high temperature, stored in a heat storage tank, and supplied from the heat storage tank as hot water or steam.

  In the situation where the output power is small but the amount of hot water used is large, the hot water temperature of the heat storage tank decreases, but in this case, if the EGR valve is opened and the EGR gas flow rate to the EGR gas heat exchanger is increased, A decrease in hot water temperature can be suppressed.

JP 2008-128037 A No. 7-29240

However, in the technique described in Patent Document 1, the warm cooling medium stored in the heat storage tank is discharged from the cylinder block of the engine, and the cooling water cannot be heated sufficiently. In this regard, if the technique described in Patent Document 2 that maintains the temperature of hot water using the heat of EGR gas is applied, the cooling water can be sufficiently heated.
However, in the technique of Patent Document 2, the water used for the hot water heated by the EGR cooler or the like and stored in the heat storage tank is different from the engine cooling water, and the distribution system different from the cooling water is unidirectional. And is supplied to the outside from the heat storage tank. In order to warm up the equipment of the vehicle and to raise the temperature of the fluids, since the refrigerant fluid (heat medium fluid) such as cooling water is used in a closed circuit, the technique of Patent Document 2 cannot be applied as it is.

  The present invention was devised in view of such a problem, and has a simple configuration and can efficiently promote the warming of each device and the temperature rise of fluids using the exhaust heat of the devices mounted on the vehicle. An object of the present invention is to provide a vehicle heat storage type heating device.

  In order to achieve the above object, a heat storage type heating apparatus for a vehicle according to the present invention includes a heat medium circuit that is provided in a vehicle and in which a heat medium circulates, and that dissipates heat from the heat medium that is interposed in the heat medium circuit. Means, heat exchange means interposed in the heat medium circuit for exchanging heat between the exhaust of the vehicle engine and the heat medium, and the heat medium circuit interposed in the heat medium circuit. A first heat medium driving means that circulates within the first heat medium driving means, and a first heat medium driving means that is connected to bypass a circuit portion between the downstream portion of the heat exchange means and the upstream portion of the heat dissipation means of the heat medium circuit. A bypass heat medium circuit, a variable capacity heat storage tank that is interposed in the first bypass heat medium circuit and stores the heat medium heated by the heat exchange means, and a capacity for temporarily storing the radiated heat medium Variable storage tank and upstream end A second bypass heat medium circuit having a downstream end connected to the temporary storage tank and a second bypass heat medium circuit connected to the temporary storage tank, and the vehicle equipment or fluid by the heat medium interposed and circulated in the second bypass heat medium circuit. Heating means for heating, and supplying the heat medium in the heat storage tank to the heating means and sending the heat medium remaining in the heating means into the temporary storage tank. Second heat medium driving means for circulatingly driving the heat medium in two bypass heat medium circuits, and a first flow path for opening a flow path for supplying the heat medium heated by the heat exchange means to the heat storage tank It is characterized by comprising switching means and second flow path switching means for opening a flow path for returning the heat medium temporarily stored in the temporary storage tank to the heat medium circuit.

It is preferable that the heat storage tank and the temporary storage tank are integrated tanks in which one container is partitioned by a movable partition wall.
The heat medium is cooling water for the engine, and the heat dissipating means is a radiator that radiates the cooling water, and the radiator is connected to a cooling water circulation circuit that cools the engine with the cooling water, It is preferable that the heat medium circuit is connected so as to branch from the middle of the cooling water circulation circuit toward the heat exchanging means and further return to the radiator.

Preferably, the heat exchange means is an EGR cooler that is interposed in an EGR flow path equipped in the engine and cools EGR gas.
It is preferable that the heat exchanging means is provided in an exhaust pipe through which exhausted exhaust from the engine flows.
The vehicle equipment or fluid heated by the heating means includes engine oil of the engine, transmission oil of a transmission connected to the engine, and a differential that distributes rotational force from the transmission to drive wheels. Preferably, the oil is at least one of a differential oil and an air conditioning heater for the vehicle.

  The second heat medium driving means is an electric pump provided near an inlet / outlet of the heat storage tank, and the first and second flow path switching means are both electromagnetic valves, and the heat medium A first temperature detecting means for detecting the temperature of the heat medium in the circuit; a second temperature detecting means for detecting the temperature of the heat medium in the heat storage tank; and the first and second temperature detecting means. Control means for controlling the second heat medium driving means and the first and second flow path switching means based on the detection information from the control means, the control means determines a cold start of the engine, At the time of the cold start, the first flow path switching means is shut off and the second flow path switching means is opened, and the second bypass heat medium circuit causes the heat medium to be circulated and driven. Controlling the heat medium drive means of the heat storage It is determined that the temperature of the heat medium in the tank is a low temperature state lower than the temperature of the heat medium in the heat medium circuit, and in the low temperature state, the first flow path switching means is opened and the The second heat medium is configured to block the second flow path switching unit and permit the supply of the heat medium heated by the heat exchange unit to the heat storage tank or to energize the supply to the heat storage tank. It is preferable to control the driving means.

  According to the vehicle heat storage type heating device of the present invention, heat is exchanged between the exhaust of the engine and the heat medium by the heat exchange means, thereby cooling the exhaust and heating the heat medium. The heat medium is supplied to and stored in a variable capacity heat storage tank in the first bypass heat medium circuit. The heated heat medium stored in the heat storage tank is supplied to the heating means interposed in the second bypass heat medium circuit by the second heat medium driving means at the time of cold start, for example, By sending the heat medium remaining in the heating means into the temporary storage tank, the vehicle equipment or fluid is heated by the heat medium. Therefore, it is possible to efficiently heat the equipment or fluid of the vehicle using the heat of the exhaust. In addition, since the heat storage tank and the temporary storage tank are variable in capacity, the heat storage tank and the temporary storage tank can be configured to prevent the ingress of air into each tank, and the heat retention efficiency is good.

If the heat storage tank and the temporary storage tank are integrated into one container, the volume of the heat storage tank and the temporary storage tank can be changed efficiently through the movable partition wall. Since it can be configured, it is easy to mount.
If engine cooling water is used as the heat medium, the cooling of the engine, the exhaust, and the heating of vehicle equipment or fluids can be performed using only the cooling water, making the device simple and efficient. Can be configured well.

If an EGR cooler is applied as a heat exchange means, heating of the heat medium can be promoted by using high-temperature exhaust gas (EGR gas), and the vehicle equipment or fluids can be reliably heated. it can.
Of course, even if the heat exchanging means is installed in the exhaust pipe through which the treated exhaust flows, the vehicle equipment or fluid can be heated and the temperature of the exhaust exhausted to the atmosphere can be lowered. Therefore, it is possible to prevent deterioration of the temperature environment around the traveling road.

If the engine oil, transmission oil, or differential differential oil is warmed by the warming means during cold start, friction during operation of the device can be suppressed, which contributes to improved fuel consumption. Moreover, if it applies to the heater for a vehicle air conditioning, heating can be started rapidly.
Further, if the flow of the heat medium is controlled by the control means based on the temperature of the heat medium in the heat medium circuit and the temperature of the heat medium in the heat storage tank, supply of the heated heat medium to the heat storage tank, Vehicle equipment or fluids can be automatically heated by the heated heat medium stored in the heat storage tank.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the thermal storage type heating apparatus for vehicles concerning 1st Embodiment of this invention, (a) shows the time of engine warming-up operation (at the time of the warming of apparatus or fluid), (b) Indicates the normal operation of the engine (when supplying the heat medium to the heat storage tank). BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a vehicle schematically showing an arrangement state of each component of a vehicle heat storage type heating device according to a first embodiment of the present invention on the vehicle. It is a mimetic diagram showing the EGR cooler with which the component of the regenerative heating device for vehicles concerning a 1st embodiment of the present invention is equipped. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an upper part of an integrated tank (heat storage tank, temporary storage tank) according to a vehicle heat storage type heating apparatus according to a first embodiment of the present invention. It is a block diagram which shows the thermal storage type heating apparatus for vehicles concerning 2nd Embodiment relevant to this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In these embodiments, a large vehicle represented by a truck will be described as an example of the vehicle. However, the target vehicle of the present invention is not limited to this.
<First Embodiment>
First, the thermal storage type heating device for vehicles concerning 1st Embodiment is demonstrated with reference to FIGS.

In the present embodiment, the present invention is applied to an engine cooling water circulation system.
As shown in FIG. 1, an engine (internal combustion engine) 10 mounted on an automobile (vehicle) is provided with a cooling water circuit 22 interposed with a radiator (heat dissipating means) 20, and is radiated to the radiator 20. The cooled cooling water is driven by the pump 23 and introduced into the cylinder block 11 of the engine 10 from the inflow passage 22a, and circulates through the water jacket 11a in the cylinder block 11 to cool the cylinder block 11 and While being heated, it rises to the upper cylinder head 12 and flows out from the flow path 12a to the radiator 20 through the outflow path 22b. The outflow path 22b is provided with a thermostat valve 24 that is closed when the engine 10 is cold, and the cooling water is not circulated (circulated) in the cylinder block 11 when the engine 10 is cold, so that the engine 10 can be warmed up quickly. Has come to promote. The cooling water stored in the reservoir tank 21 is appropriately supplied.

  Further, as shown in FIGS. 1, 2, and 3, the engine 10 includes an EGR passage 15 provided from the exhaust passage 14 to the intake passage 17, and an EGR valve 16a interposed in the EGR passage 15. An EGR device including the EGR cooler 16 is provided. The EGR cooler 16 cools the exhaust gas (EGR gas) by exchanging heat between the circulating exhaust gas (EGR gas) and the circulating refrigerant (heat medium). Therefore, the refrigerant flowing through the EGR cooler 16 is heated by heat exchange.

In the present embodiment, the coolant for the engine 10 is applied to the refrigerant used in the EGR cooler 16.
That is, a refrigerant circuit (heat) comprising a cooling water flow path 30a branched from the inflow path 22a of the cooling water circuit 22 toward the EGR cooler 16, and cooling water flow paths 30b and 30c returning from the EGR cooler 16 to the radiator 20. Medium circuit) 30 is provided.

The pump 23 of the cooling water circuit 22 also circulates and drives the cooling water, which is the refrigerant in the refrigerant circuit 30, and corresponds to the first heat medium driving means of the present invention.
Then, one end of a bypass flow path (first bypass heat medium circuit) 31 is connected to the flow path 30b immediately downstream of the EGR cooler 16 of the refrigerant circuit 30 so that the other end of the bypass flow path 31 is branched. Are connected so as to join a flow path 30 c further downstream of the EGR cooler 16 (flow path immediately upstream of the radiator 20) 30 c. The bypass flow path 31 includes an electromagnetic first flow path switching valve 32, an electric pump (second heat medium driving means) 33, a heat medium storage tank 40, and an electromagnetic second flow path switching valve. 35 is interposed.

  In other words, the bypass flow path 31 includes flow path portions of flow paths 31a, 31b, 31c, and 31d from one end thereof, and the flow path switching valve 32 is connected to the flow path 31a close to the flow path 30b immediately downstream of the EGR cooler 16. And the pump 33 is interposed in the subsequent flow path 31b, and the heat medium storage tank 40 is interposed between the flow path 31b and the flow path 31c joining the flow path 30c further downstream of the EGR cooler 16. The second flow path switching valve 35 is interposed in the flow path 31c.

  As shown in FIG. 4, the heat medium storage tank 40 includes a tank main body (tank case) 41 having a fan-shaped cross section, and a movable vane (movable partition wall) 42 that revolves around a fan-shaped key point. A capacity-variable heat storage tank (heat-retaining tank) 43 that is partitioned liquid-tight and stores high-temperature cooling water as a heat medium, and a variable-capacity temporary that temporarily stores a heat medium (low-temperature cooling water) after heat dissipation The storage tank 44 is an integrated tank that is divided into two tanks.

Here, the movable vane 42 turns following the pressure difference between the heat storage tank 43 and the temporary storage tank 44.
Further, the tank body 41 and the movable vane 42 are configured to have a highly heat-insulating material and structure in order to ensure the heat retention of the heat storage tank 43.
Furthermore, the heat storage tank 43 and the temporary storage tank 44 are respectively provided with openings 45 and 46 through which cooling water enters and exits, and the respective ends of the flow paths 30b and 30c are connected thereto.

Further, another bypass channel (bypass heat medium circuit) 34 is provided so as to further branch into the bypass channel 31.
The bypass channel 34 has an upstream end connected to a heat storage tank 43 and a downstream end connected to a temporary storage tank 44, respectively, and an intermediate portion is heated to heat equipment and fluids installed in the vehicle. Devices (heating means) 51, 52, 53, 54 are interposed. The upstream part of the bypass channel 34 is introduced into the channel switching valve 32, and the downstream part of the bypass channel 34 is introduced into the channel switching valve 35.

The warming device 51 is an air conditioning heater that heats the passenger compartment, the warming device 52 is an engine oil heater that warms engine oil in the oil pan 13, and the warming device 53 warms transmission oil. It is a transmission oil heater, and the heating device 54 is a differential oil heater that heats differential oil (diff oil) of the drive wheels.
The flow path switching valve 32 opens and closes the flow path 31 a from the EGR cooler 16 toward the heat storage tank 43 of the heat medium storage tank 40, and bypass flow from the heat storage tank 43 toward each heating device 51, 52, 53, 54. Open and close the path 34. In particular, when each of the heating devices 51, 52, 53, 54 has a heating request, the bypass flow path 34 is opened and the flow path 31a is closed at the same time, and when there is no heating request, the flow path 31a is opened. At the same time, the bypass channel 34 is closed. As long as such an interlocking opening / closing operation can be achieved, the opening / closing of the flow path 31a and the opening / closing of the bypass flow path 34 may be performed by separate valves.

  The flow path switching valve 35 establishes a communication state between the flow path 31 c communicating with the temporary storage tank 44 and the downstream end of the bypass flow path 34, and a flow path downstream of the flow path 31 c and the EGR cooler 16 (of the radiator 20). (The channel immediately upstream) 30c and the channel 31c communicating with the temporary storage tank 44 and the downstream end of the bypass channel 34 are blocked, and the channel 31c and the EGR cooler. The mode is switched to the communication state between the 16 further downstream flow paths (flow paths immediately upstream of the radiator 20) 30c. As long as such an interlocking opening / closing operation can be achieved, the opening / closing of the flow path 31c and the bypass flow path 34 and the opening / closing of the flow paths 31c and 30c may be performed by separate valves.

  When the heating is requested, the pump 33 directs the heated cooling water (heat medium) stored in the heat storage tank 43 from the heat storage tank 43 to the respective heating devices 51, 52, 53, 54 via the bypass channel 34. To drive. At this time, the cooled cooling water (heat medium) remaining in each of the heating devices 51, 52, 53, 54 is sent to the temporary storage tank 44 via the bypass channel 34. Further, the pump 33 stops when there is no heating request, and permits the flow of cooling water from the EGR cooler 16 toward the heat storage tank 43 of the heat medium storage tank 40, or stores the heat medium from the EGR cooler 16. It operates so as to energize the flow of the cooling water toward the heat storage tank 43 of the tank 40.

The operations of the flow path switching valves 32 and 35 and the pump 33 are controlled by the controller 61. The controller 61 operates the flow path switching valves 32 and 35 and the pump 33 based on the temperature of the cooling water (heat medium) in the heat medium circuit 30 and the temperature of the cooling water (heat medium) in the heat storage tank 43. To control.
The temperature of the cooling water (heat medium) in the heat medium circuit 30 is obtained from the detection information (cooling water temperature information) of a cooling water temperature sensor (first temperature detection means) (not shown) attached to the engine from the engine ECU 60. The temperature of the cooling water (heat medium) in the heat storage tank 43 is transmitted and acquired, and the detection information (heat retention tank temperature information) of the temperature sensor (second temperature detection means) 62 attached to the heat storage tank 43 is transmitted. To have been.

  The controller 61 determines whether or not the engine 10 is cold-started by comparing the coolant temperature Tc with a preset threshold value Tc0 when the engine is started. If the cooling water temperature Tc is less than the threshold value Tc0, it is determined that the engine is cold-started. At the time of this cold-start, it is assumed that there is a warming request. Is closed, and the flow path switching valve 35 is in a communication state between the flow path 31c and the downstream end of the bypass flow path 34 and in a closed state between the flow path 31c and the flow path 30c. Then, the pump 33 is driven so that the heated cooling water (heat medium) stored in the heat storage tank 43 is directed from the heat storage tank 43 to the respective heating devices 51, 52, 53, 54 through the bypass passage 34. .

  Thus, the air conditioning heater 51 for heating the vehicle interior, the engine oil heater for heating the engine oil, the transmission oil heater 53 for heating the transmission oil in the transmission 4, and the differential oil (diff oil) of the drive wheels are heated. Each of the differential oil heaters 54 is heated or warmed up by heating with high-temperature cooling water from the heat storage tank 43.

  Further, the controller 61 compares the heat retaining tank temperature Tw with the cooling water temperature Tc after the warming-up of the engine or the like is completed, and when the heat retaining tank temperature Tw is in a low temperature state lower than the cooling water temperature Tc, the flow path switching valve 32 is in a state in which the flow path 31a is opened and the bypass flow path 34 is closed at the same time, and the flow path switching valve 35 is closed between the flow path 31c and the downstream end of the bypass flow path 34. A communication state is established between the road 30c. Further, the pump 33 allows the flow of the cooling water from the EGR cooler 16 toward the heat storage tank 43 of the heat medium storage tank 40 or the cooling water from the EGR cooler 16 toward the heat storage tank 43 of the heat medium storage tank 40. Actuate to boost flow.

As a result, high-temperature cooling water (heat medium) is introduced into the heat storage tank 43, and at the same time, the cold cooling water (heat medium) in the temporary storage tank 44 is converted into the refrigerant circuit (heat medium circuit) 30 and the cooling water circuit. 22 to be used for cooling each part.
Since the vehicle heat storage type heating device according to the first embodiment of the present invention is configured as described above, heat exchange is performed between the exhaust of the engine 10 and the cooling water (heat medium) by the EGR cooler 16. As a result, the exhaust gas is cooled to heat the cooling water, and the heated cooling water is supplied to and stored in the capacity-variable heat storage tank 43. The heated cooling water stored in the heat storage tank 43 includes an air conditioning heater 51 that heats the vehicle interior, an engine oil heater that heats engine oil, and a transmission oil heater that heats transmission oil during cold start. 53, since it is sent to each of the differential oil heaters 54 for heating the differential oil (diff oil) of the drive wheels and is exchanged with the cold cooling water of each of the heating devices 51 to 54, these devices and fluids are hot. Warm up quickly with cooling water.

As a result, it is possible to suppress friction when the equipment is warmed up early and the equipment is operated, which contributes to an improvement in fuel consumption. Further, in the air conditioning heater 51 of the vehicle, heating can be started promptly.
Since the heat storage tank 43 and the temporary storage tank 44 are of variable capacity, the heat storage tank 43 and the temporary storage tank 44 can be configured to prevent the ingress of air into the tanks 43 and 44, and the heat retention efficiency is good.

In addition, since the heat storage tank 43 and the temporary storage tank 44 are an integrated tank 40 that is partitioned by a movable vane 42 in one container, the volumes of the heat storage tank 43 and the temporary storage tank 44 are efficiently transferred through the movable vane 42. It can be changed and can be compactly configured, so that it can be mounted on a vehicle.
Since the cooling water of the engine 10 is applied as the heat medium, the cooling of the engine 10, the cooling of the exhaust (EGR gas), and the heating of the vehicle equipment or fluid are performed using only the cooling water. Therefore, the apparatus can be configured simply and efficiently.

  Since the EGR cooler 16 is applied as a heat exchanging means, heating of the heat medium can be promoted by using high-temperature exhaust (EGR gas), and heating of the vehicle equipment or fluids is ensured. Can be done. In addition, since the EGR cooler 16 is located in the immediate vicinity of the engine 10, the differential oil heater 54 has a differential 6 between the propeller shaft 5 and the rear wheel 7 that is a driving wheel, but is slightly separated from the lower part of the cargo compartment 3, but the vehicle body 1 Since many flow pipes around the heat exchanging means can be arranged under the passenger compartment 2, the pipes can be made short and simple (see FIG. 2).

Second Embodiment
Next, a vehicle heat storage type heating apparatus according to a second embodiment related to the present invention will be described with reference to FIG.
In FIG. 5, members and parts similar to those in the first embodiment (FIGS. 1 to 4) are assigned the same reference numerals and description thereof is omitted.
In the present embodiment, a heat exchanger (heat exchanging means) 116 for exchanging heat between the exhaust and the heat medium is installed in the muffler part 19 of the exhaust pipe through which the processed exhaust downstream of the exhaust processing part 18 flows. ing. The heat medium and its circuits 130 (130a to 130d), 131b, 131c, 134 are configured in a separate system from the cooling water, the condenser 25 is applied as the heat dissipating means, and the compressor 26 is used as the first heat medium driving means. Has been applied. As the heat medium, an appropriate one such as water, ethanol, CO 2 or the like is used.

  Furthermore, if the expander 70 is connected to the muffler unit 19 and the exhaust gas flowing through the muffler unit 19 is at a high temperature, the expander 70 drives the power element 71 mounted on the vehicle using the high-temperature exhaust gas as a propellant. Is configured to do. The most versatile power element 71 is a generator, which can generate high-temperature exhaust energy and store it as electric energy in a battery. Moreover, as the power element 71, any vehicle-mounted power device may be applied.

The vehicle heat storage type heating apparatus according to the second embodiment related to the present invention is configured as described above. Therefore, when the heat energy of the exhaust is small, the heat exchanger 116 converts the heat energy of the exhaust with the heat exchanger 116. If mainly used and supplied to the heat storage tank 43 to increase the heat energy of the exhaust, the heat energy of the exhaust can be used by the expander 70 and the heat exchanger 116 to efficiently recover the exhaust energy.

<Others>
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and can be appropriately modified or combined.

For example, in the above embodiment, the heat medium storage tank 40 of the integrated tank in which the inside of the tank body 41 is partitioned by the movable vane 42 and includes the heat storage tank 43 and the temporary storage tank 44 is applied. The temporary storage tank 44 may be constituted by individual variable capacity tanks.
Further, the heat medium storage tank 40 of an integrated tank is not limited to one having a sectoral cross section.

Further, in the first embodiment, the EGR cooler is applied to the heat exchanger. However, the heat exchanger is not limited to this as long as the exhaust heat can be used, and the heat exchanger (heat exchange) is connected to the muffler portion 19 as in the second embodiment. (Means) 116 may be provided.
Furthermore, as vehicle equipment or fluids to be heated (heating target), an air conditioning heater 51 for heating the vehicle interior, an engine oil heater for heating engine oil, a transmission oil heater 53 for heating transmission oil, Although the differential oil heater 54 that heats the differential oil (diff oil) of the drive wheels is exemplified, the present invention is not limited thereto.

  In addition, the heating conditions are not limited to cold start, and it is effective to apply if the temperature of equipment or fluids is low even in cold districts or cold seasons even after startup. is there.

DESCRIPTION OF SYMBOLS 10 Engine 11 Cylinder block 12 Cylinder head 13 Oil pan 14 Exhaust passage 15 EGR flow path 16 EGR cooler 16a EGR valve 17 Intake passage 18 Exhaust treatment part 19 Exhaust pipe muffler part 20 Radiator (heat dissipation means)
21 Reservoir tank 22 Cooling water circuit 23 Pump (first heat medium driving means)
30 Refrigerant circuit (heat medium circuit)
31 Bypass flow path (first bypass heat medium circuit)
32 First flow path switching valve 33 Electric pump (second heat medium driving means)
34 Bypass flow path (second bypass heat medium circuit)
35 Second flow path switching valve 40 Heat medium storage tank 41 Tank body (tank case)
42 Movable vane (movable partition wall)
43 Variable capacity heat storage tank (heat insulation tank)
44 Temporary storage tank with variable capacity 51, 52, 53, 54 Heating device (heating means)
60 Engine ECU (second temperature detection means)
61 controller 62 temperature sensor (second temperature detection means)
70 Expander 71 Power element

Claims (7)

A heat medium circuit installed in a vehicle and circulating a heat medium;
A heat dissipating means interposed in the heat medium circuit to dissipate the heat medium;
Heat exchanging means interposed in the heat medium circuit for exchanging heat between the exhaust of the engine of the vehicle and the heat medium;
First heat medium driving means interposed in the heat medium circuit and circulatingly driving the heat medium in the heat medium circuit;
A first bypass heat medium circuit connected to bypass a circuit portion between the downstream part of the heat exchange means and the upstream part of the heat dissipation means of the heat medium circuit;
A variable capacity heat storage tank that is interposed in the first bypass heat medium circuit and stores the heat medium heated by the heat exchange means;
A capacity-variable temporary storage tank that temporarily stores the heat medium that has dissipated heat;
A second bypass heat medium circuit having an upstream end connected to the heat storage tank and a downstream end connected to the temporary storage tank;
Heating means for heating equipment or fluids of the vehicle by the heat medium interposed and distributed in the second bypass heat medium circuit;
In the second bypass heat medium circuit, the heat medium in the heat storage tank is supplied to the heating means and the heat medium remaining in the heating means is sent into the temporary storage tank. Second heat medium driving means for circulatingly driving the heat medium;
First flow path switching means for opening a flow path for supplying the heat medium heated by the heat exchange means to the heat storage tank;
And a second flow path switching unit that opens a flow path for returning the heat medium temporarily stored in the temporary storage tank to the heat medium circuit. . The vehicle heat storage type heating apparatus according to claim 1, wherein the heat storage tank and the temporary storage tank are integrated tanks that are partitioned by a movable partition wall in one container. The heat medium is cooling water for the engine, and the heat radiating means is a radiator that radiates heat from the cooling water,
A cooling water circulation circuit for cooling the engine with the cooling water is connected to the radiator,
3. The vehicle heat storage type according to claim 1, wherein the heat medium circuit is connected so as to diverge from the middle of the cooling water circulation circuit toward the heat exchange means and further return to the radiator. 4. Heating device. 4. The vehicle-use vehicle according to claim 1, wherein the heat exchange means is an EGR cooler that is interposed in an EGR flow path equipped in the engine and cools EGR gas. 5. Thermal storage type heating device. The vehicle heat storage type heating apparatus according to any one of claims 1 to 3, wherein the heat exchange means is provided in an exhaust pipe through which exhausted exhaust from the engine flows. The vehicle equipment or fluid heated by the heating means includes engine oil of the engine, transmission oil of a transmission connected to the engine, and a differential that distributes rotational force from the transmission to drive wheels. The regenerative heating device for a vehicle according to any one of claims 1 to 5, which is at least one of differential oil and a heater for air conditioning of the vehicle. The second heat medium driving means is an electric pump provided in the vicinity of the inlet / outlet of the heat storage tank, and the first and second flow path switching means are both electromagnetic valves,
First temperature detecting means for detecting the temperature of the heat medium in the heat medium circuit;
Second temperature detecting means for detecting the temperature of the heat medium in the heat storage tank;
Control means for controlling the second heat medium driving means and the first and second flow path switching means based on detection information from the first and second temperature detection means,
The control means includes
The cold start of the engine is determined, and at the time of the cold start, the first flow path switching means is shut off and the second flow path switching means is opened, and the second bypass heat medium circuit Controlling the second heat medium driving means so as to circulate and drive,
It is determined that the temperature of the heat medium in the heat storage tank is a low temperature state lower than the temperature of the heat medium in the heat medium circuit, and when the temperature is low, the first flow path switching unit is opened. The second flow path switching means is shut off, and the second medium is allowed to allow supply of the heat medium heated by the heat exchange means to the heat storage tank or to energize supply to the heat storage tank. The heat storage warming device for a vehicle according to any one of claims 1 to 6, wherein the heat medium driving means is controlled .

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