JPH1044752A - Auxiliary heat source device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shearing pyrogen unit which does not need the new mounting space, which is free from the cost-up caused by the increase of the number of parts, and which improves the performance by minimizing the radiation from a surface of a housing of a viscos heater, and improves the reliability as the auxiliary heat source for a heat apparatus. SOLUTION: A viscos heater 9 is mounted on a position at a rear side of a fan tunnel 17 which covers an outer periphery of a cooling fan 16 which sends the cooling air to a radiator 15 installed on the place which easily receives the travelling wind of the car, that is, on the place which is comparatively free from the cooling air blown from the fan tunnel 17 to an engine 2 side, by intercepted by the existent fan tunnel 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary heat source device for a vehicle in which a heating capacity of a vehicle interior is improved by using a shear heat generator for raising the temperature of cooling water for cooling an engine as an auxiliary heat source for heating. is there.

[0002]

2. Description of the Related Art Conventionally, as a heating device for a vehicle, cooling water obtained by cooling a water-cooled engine is supplied to a heater core in a duct, and the air heated by passing through the heater core is sent into a vehicle interior. In general, a hot water heating device for a vehicle that heats a vehicle interior is generally used.

In recent years, there is a strong demand for an engine mounted on a vehicle to improve the engine efficiency. However, when the engine efficiency is improved, the heat loss is reduced, so that the cooling water for cooling the engine cannot be sufficiently heated. Also, in the case of a diesel engine vehicle or a lean burn engine vehicle, the amount of heat generated by the engine is small and the cooling water for cooling the engine cannot be sufficiently heated. In the case of a vehicle having a small amount of heat generated by the engine as described above, the temperature of the cooling water supplied to the heater core cannot be maintained at a predetermined cooling water temperature (for example, 80 ° C.), and thus the heating capacity in the vehicle compartment is insufficient. There was a problem.

For the purpose of solving the above-mentioned problems, Japanese Patent Application Laid-Open No. 2-246823 discloses a method in which a shear heating device for heating cooling water supplied from an engine to a heater core is provided in a cooling water circuit. Vehicle heating devices have been proposed. Here, the shear heating device transmits the rotational power of the engine to the shaft via a belt transmission mechanism and an electromagnetic clutch, and a heating chamber is provided in the housing.
A cooling water passage is formed on the outer periphery of the heat generating chamber, and a rotor that rotates integrally with the shaft is arranged in the heat generating chamber.
A device that generates heat by applying a shearing force to a viscous fluid, such as high-viscosity silicon oil, enclosed in its heat-generating chamber by the rotation of a rotor, and the generated heat heats the cooling water flowing back through the cooling water channel. It is.

[0005]

However, the shear heat generator is mounted near the engine because it is drivingly connected to the output shaft of the engine via a belt transmission mechanism and an electromagnetic clutch. In a vehicle, a radiator is arranged in a place where the vehicle easily receives wind from the vehicle, and a cooling fan for sending cooling air to the radiator is attached to an output shaft of the engine.

Accordingly, if the shear heat generator is mounted so as to be located in an air passage formed by a fan shroud that forms a duct between the radiator and the cooling fan, the cooling air passing through the radiator is subjected to the shear heat generator. Hit the housing. For this reason, the heating performance (heating ability) of the cooling water by the shear heat generator is reduced due to the heat radiation from the surface of the housing, and the reliability as the auxiliary heat source for heating is reduced.

In order to prevent heat radiation from the surface of the housing as described above, a heat insulating material is wound around the housing, or a heat shield plate is provided between a ventilation passage through which cooling air passes and a mounting position of the shear heat generator. It is conceivable that the shear heat generator is separated from the air passage by interposing the heat exchanger. However, there is a problem that the cost increases due to an increase in the number of parts. In addition, when a heat insulating material is wrapped around the housing of the shear heat generator, the size (size) of the shear heat generator increases. Further, a mounting space for providing a heat insulating material and a heat shield plate is required in an engine room, which is very limited, and a problem such as interference with other engine accessories occurs.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the performance by minimizing the heat radiation from the surface of the shear heat generator by optimizing the mounting position of the shear heat generator, and to improve the reliability as an auxiliary heat source for heating. It is an object of the present invention to provide a vehicle auxiliary heat source device capable of improving the performance. Another object of the present invention is to provide an auxiliary heat source device for a vehicle that can prevent an increase in cost due to an increase in the number of parts and does not require a new mounting space.

[0009]

According to the first aspect of the present invention, the cooling fan is located on the back side of the fan shroud that covers the outer periphery of the cooling fan that sends the cooling air to the air-cooled heat exchanger. By mounting a shear heat generator so that it is not located in the air flow path formed by a fan shroud that ducts between the air-cooled heat exchanger and the cooling fan, cooling air is blocked even a little, so shear heat is generated. The amount of heat radiation from the surface of the vessel can be suppressed. As a result, it is possible to suppress a decrease in the performance of the shear heat generator, and to suppress a decrease in the reliability as the auxiliary heat source for heating.
Further, the amount of heat radiated from the surface of the shear heat generator can be suppressed without increasing the number of parts, so that an increase in cost can be suppressed and a large mounting space is not required.

According to the second aspect of the present invention, the side surface of the engine is provided by the heat generator mounting means so as to be located on the back side of the fan shroud which covers the outer periphery of the cooling fan for sending the cooling air to the air-cooled heat exchanger. Since the cooling air is blocked even by a small amount by attaching the shear heat generator to the, the amount of heat radiation from the surface of the shear heat generator can be suppressed. Thereby, the same effect as the first aspect is obtained. According to the third aspect of the present invention, the number of components can be reduced by rotating the rotor of the shear heat generator and the cooling fan by the output shaft of the internal combustion engine, so that the cost can be reduced.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

[Configuration of First Embodiment] FIGS. 1 to 6 show a first embodiment of the present invention.
FIG. 1 and FIG. 2 are views showing a mounted state of a viscous heater, and FIG. 3 is a view showing an engine and a belt transmission mechanism.

The vehicle air conditioner 1 includes a water-cooled diesel engine (hereinafter abbreviated as engine) 2, a cooling water circuit 3 of an engine cooling device for cooling the engine 2, and a shear for heating cooling water for cooling the engine 2. The heating device 4 includes a heating device mounting device 10 for mounting the shear heating device 9 of the shear heating device 4 to the side wall surface of the body of the engine 2.

The engine 2 is an internal combustion engine installed in an engine room of the vehicle, and also serves as a drive source for driving the shear heating device 4 to rotate. A crank pulley 12 connected to a V belt 6 described later is attached to a crankshaft (output shaft) 11 of the engine 2. The engine 2 has a water jacket 13 provided around the cylinder block and the cylinder head. The water jacket 13 is provided in a cooling water circuit 3 for circulating cooling water for cooling the engine 2.

The cooling water circuit 3 includes a water pump 14 for forcibly circulating the cooling water, a radiator 15 for exchanging heat between the cooling water and the air to cool the cooling water, a thermostat 18 as an automatic regulating valve for the cooling water temperature, and a cooling device. A heater core 20 for exchanging heat between water and air to heat the air, a water valve 21 for supplying and shutting off cooling water to the heater core 20 and the like are attached. Water pump 14
Is installed upstream of the water jacket 13 of the engine 2 and is driven to rotate by the crankshaft 11 of the engine 2.

The radiator 15 is an air-cooled heat exchanger according to the present invention, and is installed in a place in the engine room of the vehicle where the traveling wind is easily received. The cooling water is cooled by exchanging heat between the air passing through the cooling water and the cooling water flowing in the tube. The radiator 15 is connected to a plurality of rows of tubes and fins (both not shown), an upper tank 15a connected to the inlet-side ends of these tubes, and the outlet-side ends of the plurality of tubes. Lower tank 1
5b and the like.

The cooling fan 16 is a push-type axial flow type blower that blows the cooling air sucked from the front grill 22 of the vehicle through the radiator 15 and then sends the cooling air to the engine 2. The crankshaft 1
1 is driven to rotate. The cooling air flowing out of the radiator 15 is supplied to the engine 2 around the cooling fan 16.
Is provided.

The fan shroud 17 includes a radiator 15
The cooling fan 16 is a part that assists the performance of the cooling fan 16 and increases the amount of air blown by the cooling fan 16 by forming a duct between the cooling fan 16 and the cooling fan 16. A cylindrical shroud portion 17a that covers the outer periphery of the fan 16, and a substantially flat surface extending from the radiator-side end (front end of the vehicle) of the shroud portion 17a in the surface direction of the core of the radiator 15. The portion 17b and the like are integrally formed of resin (for example, polypropylene resin). In some cases, it may be made of metal.

When the temperature of the cooling water is lower than a predetermined cooling water temperature (for example, 82 ° C.), the thermostat 18 functions to quickly bring the engine 2 close to an appropriate temperature through a bypass flow path 19 for fully closing the cooling water from the radiator 15. do. Further, the thermostat 18 starts to open the flow path on the radiator 15 side when the cooling water temperature rises to a predetermined cooling water temperature (for example, 82 ° C.) or more, and when the cooling water temperature rises to a predetermined cooling water temperature (for example, 95 ° C.) or more. The flow path is fully opened.

The heater core 20 is mounted in a duct provided on the front side in the vehicle interior, and is connected to the cooling water circuit 3 downstream of the shear heating device 4 in the flow direction of the cooling water. An air mix damper (not shown) is rotatably mounted on the windward side of the heater core 20. The water valve 21 is a hot water valve that adjusts an opening degree (opening degree) of a cooling water pipe (cooling water passage) that supplies cooling water to the heater core 20.

Next, the shear heating device 4 will be briefly described with reference to FIGS. Here, FIG. 4 and FIG. 5 are views showing the shear heating device 4.

The shear heating device 4 is an auxiliary heat source device for a vehicle according to the present invention, and includes a belt transmission mechanism 5 drivingly connected to a crankshaft 11 of the engine 2, and rotation of the engine 2 via the belt transmission mechanism 5. A shear heat generator (hereinafter referred to as a viscous heater) 9 having a shaft 8 to be powered
Consists of

As shown in FIGS. 1 to 3, the belt transmission mechanism 5 includes a multi-stage V-belt 6 wrapped around a crank pulley 12 attached to a crankshaft 11 of the engine 2, and the V-belt 6. Through the crankshaft 11
This is a power transmission mechanism having an electromagnetic clutch (hereinafter referred to as a viscous clutch) 7 drivingly connected to the (crank pulley 12).

The V-belt 6 transfers the rotational power (driving force) of the engine 2 to a viscous heater 9 via a viscous clutch 7.
Belt transmission means for transmitting the shaft 8 to the shaft 8. Also, V
A V-pulley 24 of an auxiliary device of the engine 2 (for example, a hydraulic pump for pumping lubricating oil of the engine 2) 23 is hung on the belt 6. The pulley of the water pump 14 may be hung on the V-belt 6.

The viscous clutch 7 is a clutch means for interrupting transmission of rotational power from the crankshaft 11 of the engine 2 to the shaft 8 of the viscous heater 9. Then, as shown in FIG. 4, the viscous clutch 7 attracts the rotor 42 by the magnetomotive force of the electromagnetic coil 41 that generates a magnetomotive force when energized, the rotor 42 that is rotationally driven by the engine 2, and the electromagnetic coil 41. The armature 43 includes an inner hub 45 connected to the armature 43 via a leaf spring 44 and applying rotational power to the shaft 8 of the viscous heater 9.

The electromagnetic coil 41 is formed by winding a conductive wire provided with an insulating film, is housed in a stator 46 made of a magnetic material such as iron, and is molded and fixed in the stator 46 with an epoxy resin. I have. Note that the stator 4
6 is fixed to the front surface of the housing 49 of the viscous heater 9.

The rotor 42 has a V-pulley 47 around which a V-belt 6 (see FIG. 3) is wound around which is joined by joining means such as welding, and is constantly driven by the rotational power of the engine 2 transmitted through the V-belt 6. It is a rotating body (the input part of the viscous clutch 7). The rotor 42 is a first friction member formed of a magnetic material such as iron into a U-shaped cross section, and rotates around the outer periphery of the housing 10 of the viscous heater 9 via a bearing 48 provided on the inner periphery side. It is freely supported.

The armature 43 has an axial air gap (for example, 0.5 mm) on the annular disc-shaped friction surface of the rotor 42.
With a ring-shaped friction surface facing each other with a gap
This is a second friction member formed of a magnetic material such as iron into an annular plate shape. When the armature 43 is attracted (engaged) to the friction surface of the rotor 42 by the magnetomotive force of the electromagnetic coil 41, the rotational power of the engine 2 is transmitted from the rotor 42.

The leaf spring 44 is fixed to the armature 43 on the outer peripheral side by fixing means such as rivets, and the inner peripheral side is fixed to the inner hub 45 by fixing means such as rivets. This leaf spring 44 separates (releases) the armature 43 from the friction surface of the rotor 42 when the energization of the electromagnetic coil 41 is stopped.
This is an elastic member that is displaced in the direction in which it is moved (leftward in the figure) and returns to the initial position. The inner hub 45 is an output portion of the viscous clutch 7 whose input side is drivingly connected to the armature 43 via the leaf spring 44 and whose output side is drivingly connected to the shaft 8 of the viscous heater 9 by spline fitting.

The viscous heater 9 constitutes a heating auxiliary heat source for the engine 2 which is a heating heat source.
The engine 2 via the belt 6 and the viscous clutch 7
Shaft 8 to which rotational power is applied, a housing 49 that rotatably supports the shaft 8, and a housing 4
9 is composed of a separator 52 that divides the internal space into a heat generating chamber 50 and a cooling water channel 51, a rotor 53 rotatably arranged in a housing 49, and the like.

The viscous heater 9 of the present embodiment
1 is attached to the body side wall surface of the engine 2 so as to be located on the back side of the fan shroud 17 of the cooling fan 16 as shown in FIGS. That is,
The viscous heater 9 is a truncated cone-shaped extension line (cooling air air) that extends the leeward end (engine-side end) of the shroud portion 17 a of the fan shroud 17 in the substantially axial direction of the crankshaft 11 of the cooling fan 16. The cooling air generated by the rotation of the cooling fan 16 and the traveling wind of the vehicle are hardly hit. Incidentally, the viscous heater 9 may be provided integrally with the body side wall of the engine 2.

The shaft 8 is an input shaft which is fastened and fixed to the inner hub 45 of the viscous clutch 7 by a fastening member 54 such as a bolt, and rotates integrally with the armature 43. The shaft 8 is rotatably supported on the inner periphery of the housing 49 via a bearing 55 and a seal member 56. Note that an oil seal that prevents leakage of viscous fluid is used as the seal member 56.

The housing 49 is made of a metal member such as an aluminum alloy, and has a ring-shaped cover 57 fastened and fixed to the rear end thereof by a fastening member 58 such as a bolt or a nut. The separator 52 and the sealing material 59 are mounted on the joint surface between the housing 49 and the cover 57. An O-ring that prevents leakage of cooling water is used as the seal material 59.

The separator 52 is made of a metal member having excellent thermal conductivity such as an aluminum alloy, and is a partition member whose outer peripheral portion is sandwiched between the cylindrical portion of the housing 49 and the cylindrical portion of the cover 57. Between the front end surface of the separator 52 and the rear end surface of the housing 49, there is formed a heat generating chamber 50 in which a viscous fluid (for example, silicon oil or the like) that generates heat when a shearing force is applied is sealed.

The rear end face of the separator 52 and the inside of the cover 57 are liquid-tightly partitioned from the outside, and
The cooling water channel 51 in which the cooling water for cooling the cooling water flows is formed. Further, on the rear end surface on the lower side of the separator 52,
A large number of substantially arc-shaped fin portions 52a for efficiently transmitting the heat of the viscous fluid to the cooling water are integrally formed.

Instead of the fin portion 52a, the rear end surface of the separator 52 may be made uneven, or a heat transfer promoting member such as a corrugated fin or a fine pin fin may be provided on the outer wall surface of the cover 57. Further, a labyrinth seal may be formed between the separator 52 and the rotor 53, and the labyrinth seal may be used as the heating chamber 50.

From the rear end face of the separator 52, a partition wall 52b is formed so as to bulge so as to partition the cooling water channel 51 into an upstream water channel 51a and a downstream water channel 51b. An inlet-side cooling water pipe 5 through which cooling water flows into the cooling water passage 51 is provided on an outer wall portion near the partition wall 52b of the cover 57.
7a, and an outlet-side cooling water pipe 57b through which the cooling water flows out from the cooling water passage 51 is connected.

The rotor 53 is rotatably disposed in the heat generating chamber 50 and is fixed to the outer periphery of the rear end of the shaft 8.
A plurality of grooves (not shown) are formed on the outer peripheral surface or both side wall surfaces of the rotor 53, and protrusions are formed between adjacent grooves. When the rotational power of the engine 2 is applied to the shaft 8, the rotor 53 rotates integrally with the shaft 8 and applies a shearing force to the viscous fluid sealed in the heat generating chamber 50.

Next, the heater mounting device 10 will be briefly described with reference to FIGS. Here, FIG. 6 is a diagram showing the engine-side adjustment bar and the engine-side bracket.

The heater mounting device 10 is a heater mounting means of the present invention, and includes an engine-side adjust bar 61 supporting the upper side of the viscous heater 9, an engine-side bracket 62 supporting the lower side of the viscous heater 9, 63, an adjustment bar-side stay 71 and bracket-side stays 72, 73, etc., integrally formed with the viscous heater 9.

The engine-side adjustment bar 61 is a portion extending downward along the body side wall surface from a base portion 65 fastened and fixed to the body side wall surface of the engine 2 by a plurality of fasteners 64 such as bolts and nuts. , Is a first supporting means for supporting and fixing the viscous heater 9 on the body side wall surface of the engine 2. In order to adjust the tension (tension) of the V-belt 6 for transmitting the rotational power of the engine 2 to the viscous heater 9, a bracket-side bolt 66 is provided below the engine-side adjust bar 61. An arc-shaped long hole 61a that can be rotated to the center is formed. This long hole 61a
An adjustment bar-side bolt 67 as a fastener can be inserted.

The engine side bracket 62 is
Fasteners such as a plurality of bolts and nuts on the side wall surface of the body
A portion extending upwardly along the body side wall surface from the base portion 69 tightened and fixed by 8 serves as second support means for supporting and fixing the viscous heater 9 to the body side wall surface of the engine 2. And the engine side bracket 6
2, a circular insertion hole 62a through which the bracket-side bolt 66 is inserted is formed. In addition, the insertion hole 6
A cylindrical slide bush 70 for gap adjustment is fitted in 2a.

The engine-side bracket 63 extends upward along the body side wall surface from the base portion 69, and is a portion provided so as to face the engine-side bracket 62. The viscous heater 9 is attached to the body side wall surface of the engine 2. This is third supporting means for supporting and fixing. A circular fastening hole 63 a into which the bracket-side bolt 66 is screwed is formed above the engine-side bracket 63.

In the present embodiment, the engine-side adjust bar 61 and the engine-side brackets 62 and 63 are fastened and fixed to the body side wall surface of the engine 2 by fasteners 64 and 68 in this embodiment. They may be integrally formed or connected by joining by welding means such as brazing.

The adjust bar stay 71 is a portion extending upward from the outer peripheral surface on the upper end side of the housing 49, and is a first supported means that is fixed to a mounting surface of the engine adjust bar 61 by an adjust bar bolt 67. It is. A circular fastening hole 71a into which the adjustment bar-side bolt 67 is screwed is formed on the distal end side of the adjustment bar-side stay 71. In addition, reinforcing ribs 74 are provided on the adjustment bar side stays 71 to improve the strength.
Are formed.

The bracket-side stays 72 and 73 are portions extending below the outer peripheral surfaces at the lower ends of the housing 49 and the cover 57, and are fixed to the mounting surfaces of the engine-side brackets 62 and 63 by bracket-side bolts 66. 2. Third supported means. Note that the bracket-side bolts 66 are provided at the distal ends of the bracket-side stays 72 and 73.
Are formed with circular fastening holes 72a and 73a. Reinforcing ribs 75 are formed on the bracket-side stays 72 and 73 to improve the strength.

In this embodiment, the adjust bar-side stay 71 and the bracket-side stays 72 and 73 are formed integrally with the housing 49 and the cover 57. They may be connected by joining by welding means or the like.

[Operation of First Embodiment] Next, the operation of the vehicle air conditioner 1 of the present embodiment will be briefly described with reference to FIGS.

When the engine 2 starts, the crankshaft 11 and the water pump 14 rotate. And
The rotational power of the engine 2 is transmitted to the rotor 42 via the crank pulley 12, the V belt 6, and the V pulley 47. When the electromagnetic coil 41 of the viscous clutch 7 is turned on, the armature 43 is attracted to the friction surface of the rotor 42 by the magnetomotive force of the electromagnetic coil 41, and the rotational power of the engine 2 is transmitted to the inner hub 45 and the shaft 8. . As a result, the rotor 53 rotates integrally with the shaft 8, so that a shear force acts on the viscous fluid in the heat generating chamber 50, so that the viscous fluid generates heat.

Therefore, when the cooling water heated in the water jacket 13 of the engine 2 passes through the cooling water passage 51 of the viscous heater 9, the viscous fluid flows through a large number of fin portions 52 a integrally formed with the separator 52. Is heated by absorbing the generated heat. The cooling water heated by the viscous heater 9 is supplied to the heater core 20, so that the vehicle interior is heated with a large heating capacity.

At this time, the cooling fan 16 is also rotated by the rotation of the crankshaft 11, so that the cooling fan 16 flows from the front of the vehicle through the front grill 22 and the plurality of tubes of the radiator 15 into the surface direction portion 17b of the fan shroud 17. The cooling air flows out from the engine-side end of the shroud portion 17a of the fan shroud 17, hits the engine 2 and cools the engine 2.

The viscous heater 9 is mounted so as to be located on the back side of the fan shroud 17, that is, so as not to be located within an extension of a frustoconical shape in which the shroud portion 17a of the fan shroud 17 is extended substantially in the axial direction. Have been. Therefore, since the viscous heater 9 is mounted so as not to be located in the air flow path formed by the shroud portion 17a of the fan shroud 17, the cooling wind or the traveling wind of the vehicle that actively flows in the air flow path is hit. Therefore, the amount of heat radiation from the housing 49 and the cover 57 of the viscous heater 9 is reduced.

[Effects of the First Embodiment] As described above, in the present embodiment, even if the cooling air is blown to the engine 2 by the cooling fan 16, even a small amount of the cooling air is blocked by the fan shroud 17. By minimizing the amount of heat radiated from the housing 49 and the cover 57 of the viscous heater 9, it is possible to prevent the temperature of the cooling water flowing back through the cooling water passage 51 of the viscous heater 9 from lowering, so that cooling with a large heating capacity is achieved. Water will be supplied to the heater core 20.

As a result, the temperature of the cooling water flowing into the heater core 20 rises, so that the temperature of the cooling water in the cooling water circuit 3 can be maintained at a predetermined cooling water temperature (for example, about 80 ° C.). Therefore, when the heat radiation amount of the heater core 20 increases, the air that has been sufficiently heated is blown into the vehicle interior when passing through the heater core 20, so that a decrease in the heating capacity of the vehicle interior can be prevented.

The housing 49 of the viscous heater 9
The heat insulating material is not wound around the cover 57 and the viscous heater 9 is not isolated by interposing a heat shield between the ventilation passage through which the cooling air passes and the mounting position of the viscous heater 9. Housing 4 by fan shroud 17
Since the amount of heat radiation from the cover 9 and the cover 57 can be suppressed, an increase in cost due to an increase in the number of components can be prevented.
Furthermore, since the physique of the viscous heater 9 can be prevented from becoming larger than the current one, a large mounting space is not required in an extremely restricted engine room, and interference with other engine accessories can be prevented. .

[Other Embodiments] In the above-described embodiment, the belt transmission mechanism 5 and the viscous clutch 7 are drivingly connected to the crankshaft 11 of the engine 2 to drive the shaft 8 of the viscous heater 9. The shaft 8 of the viscous heater 9 may be driven by directly connecting the viscous clutch 7 to 11.

Further, between the crankshaft 11 of the engine 2 and the viscous clutch 7, or between the viscous clutch 7 and the shaft 8 of the viscous heater 9, one or more gear transmissions, V-belt type continuously variable transmissions, etc. A transmission mechanism (power transmission means) may be connected. In addition, as a clutch means,
Other clutch means such as a hydraulic multi-plate clutch may be used.

In the above embodiment, a water-cooled diesel engine is used as the engine, but another water-cooled engine (water-cooled engine) such as a gasoline engine may be used as the engine. Further, the rotor 53 of the viscous heater 9 may be rotationally driven by a water-cooled engine or an air-cooled engine that is not used as a heating heat source as an engine.

In the above embodiment, only the radiator 15 is provided as an air-cooled heat exchanger. However, the radiator 15 and a condenser (refrigerant condenser) of a refrigeration cycle may be provided as an air-cooled heat exchanger. Further, only the condenser of the refrigeration cycle may be provided as the air-cooled heat exchanger.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a mounted state of a viscous heater (first embodiment).

FIG. 2 is a schematic view showing a mounted state of a viscous heater (first embodiment).

FIG. 3 is a schematic diagram showing an engine and a belt transmission mechanism (first embodiment).

FIG. 4 is a sectional view showing a viscous clutch and a viscous heater (first embodiment).

FIG. 5 is a sectional view showing a viscous heater (first embodiment).

FIG. 6 is a side view showing an engine-side adjustment bar and an engine-side bracket (first embodiment).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Engine 3 Cooling water circuit 4 Shear heating device (Auxiliary heat source device) 5 Belt transmission mechanism (Power transmission means) 6 V belt (Belt transmission means) 7 Viscous clutch (Clutch means) 9 Viscous heater (Shear heating device) 10 Heating device mounting device (heating device mounting means) 11 Crankshaft (output shaft) 15 Radiator (air cooling type heat exchanger) 16 Cooling fan 17 Fan shroud 20 Heater core 50 Heating chamber 51 Cooling water channel 53 Rotor

Claims (3)

[Claims] (A) a rotor that rotates when rotational power of an engine is applied, a heat generating chamber containing a viscous fluid that generates heat by applying a shearing force when rotational power is applied to the rotor, and the engine A cooling water passage through which the cooling water that has cooled the cooling water flows back, and a shear heat generator that heats the cooling water that flows back through the cooling water passage by the generated heat of the viscous fluid in the heating chamber; and (b) rotating power of the engine. An auxiliary heat source device for a vehicle, comprising: a power transmission unit that transmits the heat to the rotor, wherein the shear heat generator is located on a back side of a fan shroud that covers an outer periphery of a cooling fan that sends air to an air-cooled heat exchanger. An auxiliary heat source device for a vehicle, wherein the auxiliary heat source device is mounted as described above. 2. An auxiliary heat source device for a vehicle according to claim 1, wherein said engine has a heater mounting means for mounting said shear heat generator on a side surface of said engine. 3. The vehicle auxiliary heat source device according to claim 1, wherein the shear heat generator is drivingly connected to an output shaft of the engine together with the cooling fan. Auxiliary heat source device.