JPH11263117A - Auxiliary heater device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow easily mounting an aux. heater device for a vehicle around a drive source even if it is surrounded by many auxiliary units, etc., by using a viscous fluid provided in an existing auxiliary unit equipped with a fluid coupling as an aux. heat source. SOLUTION: A drive plate 13 is installed on a drive shaft 11 to be driven by an engine, while a driven plate 14 having a sliding surface 27 opposing to the sliding surface 26 of the drive plate 13 is installed on a drive shaft 12 to drive the blades 25 of a cooling fan 9 equipped with a fluid coupling, and fluid coupling 39 of such a structure that the gap between the two sliding surfaces 26 and 27 is filled with silicone oil 15 is installed in the housing 29 of a cooling water pump 8. When the temp. of the cooling water is low, an electromagnet 36 of an electromagnetic brake 17 is turned on to fasten the drive shaft 12 rotating in a single piece with the fan 9 and the driven plate 14 so that a slip is generated between the two sliding surfaces 26 and 27, and thereby the silicone oil 15 in the fluid coupling 39 is allowed to emit heat, which is used as an aux. heat source. Thereby the temp. of the cooling water is raised so as to complement the heating capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary heating device for a vehicle for assisting a heating capacity, and more particularly to a vehicle assisting device optimal for assisting a heating ability of a vehicle traveling in a cold region where the heating capacity is insufficient. Related to heating system.

[0002]

2. Description of the Related Art In recent years, the amount of exhaust heat of an engine mounted on a vehicle has been reduced due to an increase in the efficiency of the engine. On the other hand, a combustion type heater that improves the heating capacity of the interior of the vehicle by burning the fuel and heating the cooling water or the air by the heat of combustion or the heat of the exhaust gas may be used. There is a problem that becomes. Therefore, Japanese Patent Application Laid-Open No. 2-246823
Japanese Patent Laid-Open Publication No. 3-57877 and Japanese Patent Application Laid-Open No. 3-57877 propose an auxiliary heating device for a vehicle including an auxiliary heater driven by an engine mounted on the vehicle.

The auxiliary heater includes a liquid filling portion for filling a viscous fluid such as silicon oil between a rotating plate driven by the engine and a fixed plate facing the rotating plate, and a shearing force applied to the liquid by rotating the rotating plate. And a heat exchanger for exchanging the heat generated in the liquid by the shearing force with the cooling water of the engine to improve the heating capacity of the vehicle interior of the vehicle. And the structure is simple,
An excellent auxiliary heater at low cost can be realized.

[0004]

However, in the current vehicle, many engine accessories such as a compressor of a refrigeration cycle, an alternator as a vehicle charging device, and a power steering pump are mounted around the engine. For this reason, it is difficult to newly install the auxiliary heater around the engine, and there is a problem that the mountability around the engine is difficult.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and uses a viscous fluid as an auxiliary heating heat source by fixing a second rotating member that rotates integrally with an auxiliary device with a fluid coupling of a driving source. Accordingly, an object of the present invention is to provide a vehicle auxiliary heating device that is excellent in mountability on a vehicle. It is another object of the present invention to provide an auxiliary heating device for a vehicle that can be downsized.

[0006]

According to the first aspect of the present invention, when the second rotating member is fixed to the predetermined fixing member by the release fixing means, the first rotating member driven by the driving source. As the blade rotates, a shear force acts on the viscous fluid filled between the two first and second sliding surfaces, so that the viscous fluid generates heat. The heat generated by the viscous fluid exchanges heat with the main heating heat source in the heat exchanger, thereby improving the heating capacity of the main heating heat source. Here, by using the viscous fluid in the existing auxiliary device with a fluid coupling as an auxiliary heating heat source, even if many auxiliary devices are mounted around the drive source, the auxiliary heating device for the vehicle can be provided around the drive source. It can be easily mounted.

According to the second aspect of the present invention, when the rotational force of the first rotating member is transmitted to the second rotating member via the viscous fluid, the time when the second rotating member is fixed to the predetermined fixed member is determined. By filling the viscous fluid between the two first and second sliding surfaces so that the calorific value of the viscous fluid becomes smaller,
Heat generation of a viscous fluid when the vehicle auxiliary heating device is used as an ordinary auxiliary device with a fluid coupling can be suppressed. According to the third aspect of the present invention, the two first and second
By providing the sliding surface in the housing of the existing cooling water pump, the mountability of the vehicle auxiliary heating device can be further improved.

According to the fourth aspect of the invention, by providing the two first and second sliding surfaces on the surfaces of the two first and second rotating members, the radial direction of the vehicle auxiliary heating device is provided. The dimensions can be reduced. According to the invention described in claim 5, the fluid having a lower viscosity than the viscous fluid is supplied to the first sliding plate fixed to the first rotating member driven by the drive source and the one-side heat exchange section. By filling the space between the second sliding plate fixed to the second rotating member for driving the auxiliary machine and the other side heat exchanging section, the first and second sliding plates are kept low even when rotated. The viscous fluid does not generate heat, and the low-viscosity fluid can efficiently transmit the heat generated by the viscous fluid to the main heating heat source.

According to the present invention, when the movable member is displaced to a position where a minute gap is formed between the two first and second sliding surfaces, the two first and second sliding members are moved. Since the viscous fluid is filled in the minute gap formed between the moving surfaces, the power of the driving source is transmitted from the first rotating member to the second rotating member via the viscous fluid, and further supplemented from the second rotating member. Transmitted to the machine. When the movable member is displaced to a position where a minute gap is formed between the two first and second facing surfaces, the viscous fluid is filled in the minute gap formed between the two first and second facing surfaces. Since the filling is performed, a shearing force acts on the viscous fluid as the movable member is driven by the driving source, so that the liquid generates heat. Thereby, the same effect as the first aspect of the invention can be achieved.

According to the present invention, a viscous fluid filled in an existing engine accessory such as a cooling fan with a fluid coupling, an alternator with a fluid coupling, or a hydraulic pump with a fluid coupling mounted around the engine. Can be used as an auxiliary heating heat source. Further, according to the invention described in claim 8, by providing the existing cooling water pump impeller on the first rotating member driven by the driving source, the power for transmitting the power from the driving source to the first sliding plate is provided. The configuration of the transmission means can be shared with the existing cooling water pump. This allows
Further, the mountability on a vehicle can be improved.

According to the ninth aspect of the present invention, by controlling the release fixing means by the auxiliary heating control means, it is possible to control the operation and stoppage of the vehicle auxiliary heating apparatus. Thereby, the same effect as the first aspect of the invention can be achieved. According to the tenth aspect, when the temperature of the main heating heat source is a low temperature equal to or lower than a predetermined temperature, the release fixing means is controlled so as to fix the second rotating member to the predetermined fixing member. Thus, the auxiliary heating device for a vehicle can be operated by causing the viscous fluid to generate heat by applying a shear force to the viscous fluid. Further, when the temperature of the main heating heat source is higher than a predetermined temperature, by controlling the release fixing means so as to release the second rotating member from the predetermined fixing member, the rotational force of the first rotating member becomes viscous fluid. Is transmitted to the second rotating member via Thereby, the shearing force does not act on the viscous fluid and the heat generation of the viscous fluid is suppressed, whereby the operation of the vehicle auxiliary heating device can be stopped.

According to the eleventh aspect of the present invention, the activation and deactivation of the vehicle auxiliary heating device is controlled by the release fixing means. And, for example, in a type in which the operation and stop of the vehicle auxiliary heating device are controlled by an electromagnetic clutch,
A large-diameter clutch is required to transmit the torque for driving the auxiliary heating device, and this clutch is generally provided in a pulley driven by a drive source in a belt, and the outer diameter of the pulley is increased. In addition, the radial dimension of the vehicle auxiliary heating device can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Configuration of First Embodiment] FIGS. 1 to 3 show a first embodiment of the present invention, and FIG. 1 is a diagram showing a hot water heating device for a vehicle. Here, FIG.
Solid line indicates the flow of the cooling water when the cooling water temperature is low.

The hot water heating apparatus for a vehicle according to the present embodiment includes an engine 1 corresponding to a driving source according to the present invention, and a heater core provided in an air conditioning duct (not shown) disposed on the front side of the vehicle cabin of the vehicle. 2, an auxiliary heating device for a vehicle 3 for improving the heating capacity, and an air conditioning control device (hereinafter, referred to as an air conditioner ECU) 10 for electronically controlling each air conditioning device.
The cooling water circuit of the present embodiment returns the cooling water flowing out of the outlet of the water jacket 4 of the engine 1 to the engine 1 from the inlet of the water jacket 4 through the heater core 2 and the vehicle auxiliary heating device 3. It has a cooling water circulation circuit.

Further, a second cooling water circulation circuit for returning the cooling water flowing out from the outlet of the water jacket 4 to the engine 1 through the thermostat 5, the radiator 6, and the auxiliary heating device 3 for the vehicle and from the inlet of the water jacket 4;
It has a third cooling water circulation circuit for returning the cooling water flowing out of the outlet of the water jacket 4 to the engine 1 from the inlet of the water jacket 4 through the thermostat 5, the bypass passage 7, and the auxiliary heating device 3 for the vehicle. .

Here, the heater core 2 is a heating heat exchanger in which cooling water for cooling the engine 1 flows, and the cooling water is used as a main heating heat source to heat air flowing in the air conditioning duct. Further, the thermostat 5 closes the valve when the cooling water temperature is low, and circulates the cooling water to the bypass flow path 7 without passing through the radiator 6, and opens the valve when the cooling water temperature becomes high, so that the cooling water is Circulate to the radiator 6. The radiator 6 is a cooling heat exchanger that absorbs exhaust heat while passing through the water jacket 4 and cools cooling water whose temperature has increased.

Next, the vehicle auxiliary heating device 3 will be described with reference to FIGS. Here, FIG. 2 is a diagram showing the auxiliary heating device 3 for a vehicle. The vehicle auxiliary heating device 3 includes:
The cooling water pump 8 is integrated with the cooling fan 9 with a fluid coupling, and is fixed to a drive shaft 11 of the cooling water pump 8, a driving shaft 12 of the cooling fan 9 with a fluid coupling, and an end of the driving shaft 11. Drive plate 13, a driven plate 14 fixed to the outer periphery of the drive shaft 12, and a drive plate 1.
3, a silicone oil 15 filled between the driven plate 14 and the driven plate 14, a heat exchanger 16 for exchanging heat generated by the silicone oil 15 with cooling water, and an electromagnetic brake 17 for releasing and fixing the drive shaft 12. And

The cooling water pump 8 is one of engine accessories mounted around the engine 1. The drive shaft 11 corresponds to the first rotating member of the present invention, and has a cylindrical shape, and bearings 18 and 19 are provided on the outer periphery of the drive shaft 12 penetrating therethrough.
It is rotatably supported via. The drive shaft 11
Is an input shaft (rotating shaft) for the fluid coupling. A pulley 21, which is drivingly connected to a crank pulley (not shown) of the engine 1 via a belt 20, is fixed to an outer periphery of a distal end portion of the drive shaft 11. A plurality of impellers 22 for generating a circulating flow of the cooling water in the cooling water circuit are provided on the outer periphery of a substantially central portion of the drive shaft 11.
These impellers 22 are opposed to projections 23 formed on the inner periphery of the housing that constitutes the heat exchanger 16.

The cooling fan 9 with a fluid coupling is one of engine accessories mounted around the engine 1. The drive shaft 12 corresponds to the second rotating member of the present invention, is formed in a round bar shape, and serves as an output shaft (rotating shaft) for the fluid coupling. And, at the tip of the drive shaft 12,
The boss portion 24 is fixed, and a plurality of cooling blades 25 for generating cooling air sent to the radiator 6 are provided on the outer periphery of the boss portion 24.

The drive plate 13 includes an annular plate-shaped portion extending in the radial direction from the other end of the drive shaft 11 and a cylindrical portion extended in the axial direction from the outer peripheral portion of the annular plate-shaped portion. This is a first sliding plate. A sliding surface 26 (corresponding to a first sliding surface of the present invention) that forms a minute gap with the driven plate 13 is provided on the inner side surface of the annular plate-shaped portion.

The driven plate 14 is formed in an annular plate shape so as to extend radially from the outer periphery of the drive shaft 12. The driven plate 14 is a drive plate 1
Sliding surface 27 forming a minute gap between the sliding surface 26 and the sliding surface 26
It is a second sliding plate having (corresponding to a second sliding surface of the present invention). A seal member 28 for preventing leakage of the silicone oil 15 is provided between the outer periphery of the driven plate 14 and the cylindrical portion of the drive plate 13.

The silicon oil 15 corresponds to the viscous fluid of the present invention. The driven plate 14 rotates with the drive plate 13 when the rotation speed of the engine 1 is low. Slip occurs between the plate 13 and the driven plate 14,
It is a high-viscosity liquid that enables a rotational speed difference to occur between the two. In addition, the silicon oil 15 generates heat when a shearing force acts on the rotation of the drive plate 13. Here, the silicon oil portion composed of the drive plate 13, the driven plate 14, and the silicon oil 15 is a fluid coupling (fluid coupling) 3.
9

The heat exchanger 16 heats the cooling water of the engine 1 by the heat generated by the silicone oil 15.
The housing 29 includes a housing 29 also serving as a cover for the cooling water pump 8, the drive plate 13 provided in the housing 29, and a cooling water passage 30 formed between the housing 29 and the drive plate 13. The housing 29 is connected with an inlet pipe 31 for flowing the cooling water into the cooling water passage 30 and an outlet pipe 32 for flowing the cooling water out of the cooling water passage 30. Also,
The housing 29 is mounted on the outer wall surface of the engine block 33. The drive shaft 11 is rotatably supported on the inner peripheral portion on the distal end side of the housing 29 via a bearing 34.

The electromagnetic brake 17 corresponds to the release fixing means of the present invention, and includes an annular plate-shaped base plate (corresponding to a fixing member of the present invention) 35 fixed to the engine block 33 and this base plate. Air conditioner E attached to 35
An electromagnet 36 controlled to supply current to the CU 10;
And a disc-shaped plate 37 which is disposed to face with a predetermined gap therebetween. Here, the plate 37 is fixed to the other end surface of the drive shaft 12 of the cooling fan 9 with a fluid coupling, and is attracted to the base plate 35 when the electromagnet 36 is energized.

The air conditioner ECU 10 receives a switch signal from each switch (for example, a temperature setting switch 40) on an air conditioner operation panel (not shown) provided on the front of the vehicle compartment. In addition, C
A well-known microcomputer including a PU, a ROM, a RAM, and the like is provided, and each sensor signal from each sensor is A / D converted by an input circuit (not shown), and then input to the microcomputer.

The air conditioner ECU 10 supplies DC power from an on-board battery (not shown) mounted on the vehicle when an ignition switch for starting and stopping the engine 1 of the vehicle is turned on (IG ON). Then, the control process is started. Here, in the present embodiment, the air conditioner ECU 10 includes an inside air temperature sensor (inside air temperature detection unit) 41 for detecting the inside air temperature, an outside air temperature sensor (outside air temperature detection unit) 42 for detecting the outside air temperature,
Further, a cooling water temperature sensor (cooling water temperature detecting means) 43 for detecting a cooling water temperature is connected.

[Control Method of First Embodiment] Next, the operation of the air conditioner ECU 10 of the present embodiment will be briefly described with reference to FIGS. Here, FIG.
5 is a flowchart showing the operation of the first embodiment.

When the ignition switch is turned on (IG / O
N), when DC power is supplied to the air conditioner ECU 10, the routine of FIG. 3 is started. First, read each switch signal from each switch on the air conditioner operation panel,
Each sensor signal is read from each sensor (cooling water temperature detecting means: step S1). Specifically, the outside air temperature sensor 42
The outside air temperature (TAM) detected by and the cooling water temperature (W) detected by the cooling water temperature sensor 43 are read.

Next, the outside air temperature (TAM) detected by the outside air temperature sensor 42 is changed to a predetermined outside air temperature (for example, -10 ° C.).
It is determined whether the temperature is lower than TAMa) (step S2). If the determination result is NO, the energization of the electromagnet 36 of the electromagnetic brake 17 is stopped (OFF). That is, the cooling fan with fluid coupling 9 is operated (ON) (step S3). Thereafter, the process exits the routine of FIG.

If the determination result of step S2 is YES, the cooling water temperature (TW) detected by the cooling water temperature sensor 43 is lower than a predetermined cooling water temperature (for example, a temperature lower than the opening temperature of the valve of the thermostat 5: for example, It is determined whether the temperature is lower than 60 ° C .: TWa) (step S4). If the determination result is NO, that is, if the cooling water temperature (TW) is higher than or equal to the predetermined cooling water temperature (TWa), the control process of step S3 is performed.

When the result of the determination in step S4 is YES, that is, when the cooling water temperature (W) is equal to the predetermined cooling water temperature (Wa).
If the temperature is lower than that, the electromagnet 36 of the electromagnetic brake 17 is energized (ON). That is, the operation of the cooling fan with fluid coupling 9 is stopped (OFF) (step S5).
Thereafter, the process exits the routine of FIG. Note that FIG.
Is a predetermined control standby time (for example, 0.5 seconds to
(5 seconds).

[Operation of the First Embodiment] Next, the operation of the hot water heating apparatus for a vehicle according to the present embodiment will be briefly described with reference to FIGS.

When the outside air temperature or the cooling water temperature is high, the valve of the thermostat 5 is opened and the cooling water circulates through the radiator 6, so that the cooling water of the engine 1 needs to be cooled.
That is, it is necessary to operate the cooling blades 25 of the cooling fan 9 with a fluid coupling, and the silicon oil 15 does not need to generate heat. Therefore, the electromagnet 36 of the electromagnetic brake 17 is turned off.
By doing so, the drive plate 13 and the driven plate 14 are both rotatable.

Therefore, the power of the engine 1 is
When it is transmitted to the pulley via 0, the drive shaft 11 rotates.
When the drive shaft 11 rotates, the impeller 22 of the cooling water pump 8 rotates, and a circulating flow of the cooling water is generated in the cooling water circuit. Accordingly, the cooling water circuit has a first circulation circuit in which the cooling water flowing out of the outlet of the water jacket 4 of the engine 1 passes through the heater core 2 and the vehicle auxiliary heating device 3 and returns to the engine 1 from the inlet of the water jacket 4. A second circulation circuit is formed in which cooling water returns to the engine 1 from the inlet of the water jacket 4 through the thermostat 5, the radiator 6, and the vehicle auxiliary heating device 3.

On the other hand, the rotation of the drive shaft 11 rotates the drive plate 13, and the presence of the silicone oil 15 causes the drive plate 13 to rotate.
The driven plate 14 follows the drive plate 13. Then, since the drive shaft 12 is rotated by the rotation of the driven plate 14, the cooling blades 25 of the cooling fan with fluid coupling 9 rotate, and cooling air is sent to the radiator 6. Thereby, the cooling water having a high cooling water temperature flowing into the radiator 6 is cooled, so that the cooling water temperature in the cooling water circuit is maintained at a predetermined cooling water temperature (for example, 80 ° C.).

When the rotational speed of the engine 1 increases, the rotational speeds of the drive shaft 11 and the drive plate 13 also increase. When the rotation speed of the drive plate 13 increases, slippage occurs between the drive plate 13 and the driven plate 14, that is, at the fluid coupling (silicon oil portion) 39, and the drive plate 13 and the driven plate 1
4, the rotation speed of the cooling blade 25 of the cooling fan 9 with fluid coupling is suppressed to a predetermined value or less.

When traveling in a cold region where the heating capacity is insufficient,
Alternatively, when the outside air temperature and the cooling water temperature are low (specifically, when the cooling water temperature is lower than a predetermined cooling water temperature required for heating), such as immediately after the start of the engine 1 in extremely cold weather, the cooling water for the engine 1 is supplied. No cooling is required. That is, there is no need to drive the cooling blades 25 of the cooling fan 9 with a fluid coupling, and it is necessary to cause the silicone oil 15 to generate heat. For this reason,
When the electromagnet 36 of the electromagnetic brake 17 is turned on, the plate 37 is attracted to the base plate 35 and the plate 37 is fixed, so that the drive shaft 12 and the driven plate 14 are also fixed.

On the other hand, since the drive shaft 11 is driven with the rotation of the engine 1, the drive plate 13 fixed to the drive shaft 11 rotates together with the impeller 22 of the cooling water pump 8. The driven plate 14 is fixed by turning on the electromagnetic brake 17. Thereby, the pulley 21
Slip occurs between the drive plate 13 and the fixed driven plate 14 that rotate integrally with the drive plate 13 and a minute gap (0.3 mm to 0.3 mm) formed between the two sliding surfaces 26 and 27.
Since the shearing force acts on the silicone oil 15 filled in the silicon oil 15 (about 0.5 mm), the silicone oil 15 generates heat.

The heat generated by the silicone oil 15 is
The cooling water is transmitted to the cooling water flowing back through the cooling water passage 30 formed between the housing 29 and the drive plate 13 constituting the heat exchanger 16. That is, the cooling water flowing around the fluid coupling (silicon oil portion) 39 is added to the silicone oil 15.
Is transmitted, the temperature of the cooling water in the cooling water circuit rises, so that the heating capacity in the vehicle compartment of the vehicle can be supplemented.

[Effects of the First Embodiment] As described above, the auxiliary heating device 3 for a vehicle according to the present embodiment provides a cooling system with a fluid coupling for the radiator 6 when the outside air temperature and the cooling water temperature are low and the heating capacity is insufficient. Focusing on the fact that the rotation of the cooling blades 25 of the fan 9 can be stopped, the driven plate 14 that rotates integrally with the cooling blades 25 of the existing cooling fan 9 with a fluid coupling is fixed when the heating capacity is insufficient. (Lock)
By forming a minute gap between the two sliding surfaces 26 and 27 and using the silicon oil 15 in the existing fluid coupling 39 as an auxiliary heating heat source, many engine accessories are mounted around the engine 1. However, the heating capacity in the cabin of the vehicle can be supplemented without adding a new viscous heater. Therefore, it is possible to improve the mountability of the vehicle auxiliary heating device 3 on the vehicle, especially the mountability of the auxiliary heating device 3 around the engine 1.

Here, as a conventional auxiliary heating device for a vehicle, there is an auxiliary heater (a viscous heater) driven by a belt with an engine. The operation and the stop of the operation of the viscous heater are performed by an electromagnetic clutch having a relatively large radial dimension. It is done by. In many cases, the rotor of the electromagnetic clutch is integrally provided with a pulley for driving and coupling with the engine via a belt. Therefore, in the vehicle auxiliary heating device 3 of the present embodiment, by using the pulley 21 of the cooling water pump 8 as the input pulley, the pulley 21 of the pulley 21 is compared with the above-described electromagnetic clutch pulley of the conventional viscous heater. Since the diameter of the pulley can be reduced, the radial dimension of the vehicle auxiliary heating device 3 can be reduced.

[Second Embodiment] FIG. 4 shows a second embodiment of the present invention and is a view showing an auxiliary heating device for a vehicle.

In the present embodiment, the drive shaft 11 driven by the engine 1 has a round bar shape, and the drive shaft 12 for driving the cooling fan 9 with a fluid coupling has a cylindrical shape. The drive shaft 11 is provided so as to be rotatable around the inner periphery of the drive shaft 12, and a pulley 21 is fixed to a distal end portion,
The drive plate 13 is fixed substantially at the center, and the impeller 22 of the cooling water pump 8 is fixed at the rear end. The drive shaft 12 has a cooling blade 25 fixed to a front end portion via a boss portion 24 and a driven plate 14 fixed to a rear end portion. The space between the two sliding surfaces 26 and 27 is filled with the silicone oil 15.

The electromagnetic brake 17 of this embodiment is
An annular base plate (corresponding to a fixing member of the present invention) 4 fixed to a housing 29 constituting the heat exchanger 16.
5, an electromagnet 46 mounted on the base plate 45, and a disk-shaped plate 47 facing the base plate 45 with a predetermined gap therebetween. Here, the plate 47 is fixed to the outer periphery of the drive shaft 12 of the cooling fan 9 with a fluid coupling, and is attracted to the base plate 45 when the electromagnet 46 is turned on when the cooling water temperature is low. Thereby, the driven plate 14 is fixed, and
A minute gap is formed between the two sliding surfaces 26 and 27, and a shearing force acts on the silicone oil 15 with the rotation of the drive plate 13, so that the silicone oil 15 generates heat.

[Third Embodiment] FIG. 5 shows a third embodiment of the present invention and is a view showing an auxiliary heating device for a vehicle.

In this embodiment, the inner peripheral surface of the drive shaft 11 functions as the sliding surface 26 and the outer peripheral surface of the drive shaft 12 is formed in order to make the radial dimension of the fluid coupling 39 smaller than in the first embodiment. Acting as a sliding surface 27, the two sliding surfaces 26, 2
The fluid coupling (silicon oil portion) 39 is constituted by the silicone oil 15 filled between the portions 7. An oil seal 4 is provided between the inner peripheral surface of the drive shaft 11 and the outer peripheral surface of the drive shaft 12 to prevent the silicone oil 15 from flowing out.
8, 49 are attached.

In this embodiment, when the electromagnet 36 of the electromagnetic brake 17 is turned off (normal time), the drive shaft 12
Are not fixed, and the drive shafts 11 and 12 and the silicone oil 15 function as a fluid coupling 39, so that the cooling water pump 8
The rotation of the pulley 21 is transmitted to the cooling blade 25 of the cooling fan 9 with a fluid coupling. Other operations are the same as in the first embodiment.

The cooling water temperature is lower than a predetermined cooling water temperature required for heating, and the electromagnet 36 of the electromagnetic brake 17 is turned on.
When the operation is performed (at a low temperature), the drive shaft 12 is fixed (locked), and the silicon oil 15 filled between the two sliding surfaces 26 and 27 is subjected to a shearing force to generate heat. By transmitting the heat generated by the silicone oil 15 to the cooling water flowing around the fluid coupling 39, the silicone oil 15 is used as an auxiliary heating heat source.

[Fourth Embodiment] FIG. 6 shows a fourth embodiment of the present invention and is a view showing an auxiliary heating device for a vehicle.

In this embodiment, the housing 29 constituting the heat exchanger 16 is mounted on the front of the engine block 33. Further, a drive plate 13 is fixed to a front end portion of the drive shaft 11, a pulley 21 is fixed to an outer periphery of a substantially central portion, and an impeller 22 is fixed to a rear end portion. Further, a cooling blade 25 is fixed to the tip of the drive shaft 12 via a boss 24,
A driven plate 14 is fixed to the rear end.

Further, between the two sliding surfaces 26 and 27,
Silicon oil 15 is filled, and the space between the drive plate 13 and the housing 29 and between the driven plate 14 and the housing 29 are filled with the silicon oil 1.
The fluid 50 having a viscosity lower than 5 is filled. Further, a cooling water passage (corresponding to the other heat exchange portion of the present invention) 30a is formed at the front end side of the fluid coupling 39, and a cooling water passage (corresponding to the one heat exchange portion of the present invention) is also provided at the rear end side. 30b are formed. In the present embodiment, the electromagnetic brake 17 is constituted by a plate 51 provided integrally on the rear end face of the boss 24 of the cooling fan 9 with a fluid coupling and an electromagnet 52 mounted on the front surface of the housing 29. I have.

In this embodiment, when the electromagnet 52 of the electromagnetic brake 17 is turned off (normal time), the cooling blade 2
5, the drive shaft 12 and the driven plate 14 are not fixed, the pulley 21 of the cooling water pump 8 is driven by the engine 1, and the drive shaft 11 and the drive plate 13 are rotated accordingly. The drive plate 13, the driven plate 14, and the silicone oil 15 function as the fluid coupling 39, so that the drive plate 13 rotates through the silicone oil 15.
And the cooling blades 25 of the cooling fan with fluid coupling 9 rotate.

At this time, the low-viscosity fluid 50 filled between the drive plate 13 and the housing 29 and between the driven plate 14 and the housing 29 does not generate heat because of its low viscosity. When the rotation speed of the engine 1 is increased, it is the same as in the first embodiment.

The cooling water temperature is lower than a predetermined cooling water temperature required for heating, and the electromagnet 52 of the electromagnetic brake 17 is turned on.
When the operation is performed (at a low temperature), the drive shaft 12 is fixed (locked), and a minute gap is formed between the two sliding surfaces 26 and 27. As a result, a slip occurs between the drive plate 13 that rotates integrally with the pulley 21 and the fixed driven plate 14, and the silicon filled in the minute gap formed between the two sliding surfaces 26 and 27. The shearing force acts on the oil 15 and the silicon oil 15 generates heat. By transmitting the heat generated by the silicone oil 15 to the cooling water flowing around the fluid coupling 39, the silicone oil 15 is used as an auxiliary heating heat source.

[Fifth Embodiment] FIG. 7 shows a fifth embodiment of the present invention and is a view showing an auxiliary heating device for a vehicle.

In the present embodiment, a sliding surface 26 facing the sliding surface 27 of the driven plate 14 is provided on the distal end surface of a drive plate (corresponding to the movable member of the present invention) 13 in the shape of an annular plate. A housing 29 surrounding a cooling water passage 30 constituting the heat exchanger 16 is provided on the other end surface of the plate 13.
An opposing surface (corresponding to the first opposing surface of the present invention) 55 opposing an opposing surface (corresponding to the second opposing surface of the present invention) 54 of the inner wall 53 is provided. And drive plate 1
Numeral 3 is configured to be slidable on the drive shaft 11 in the axial direction via a key 56. However, the drive plate 13
Due to the presence of the key 56, it rotates integrally with the drive shaft 11.

In this embodiment, instead of the electromagnetic brake 17 of the fourth embodiment, a slide mechanism for moving the drive plate 13 in the axial direction with respect to the drive shaft 11 (the movable member driving means of the present invention). (Equivalent) 57 is provided. The slide mechanism 57 normally moves the slide yoke 58 forward (to the left in the drawing) to move the drive plate 13 to a position where a small gap is formed between the two sliding surfaces 26 and 27. When the temperature is low, the slide yoke 58 is moved rearward (to the right in the drawing) to move the two opposing surfaces 5.
The drive plate 13 is moved to a position where a minute gap is formed between the drive plates 4 and 55.

In this embodiment, at normal times, the drive plate 13 is moved forward by the slide mechanism 57 via the slide yoke 58, and the two slide surfaces 26 and 27 are moved.
Are opposed by a minute gap, and the inside of the minute gap formed between the two sliding surfaces 26 and 27 is filled with the silicon oil 15. When the pulley 21 is driven by the engine 1, the drive shaft 11 and the drive plate 13 rotate, and the rotation is transmitted to the cooling blades 25 of the cooling fan 9 with a fluid coupling through the silicon oil 15 and the driven plate 14. At this time, since the rear side of the drive plate 13 has a sufficient space, the silicone oil 15 between the two opposed surfaces 54 and 55 does not generate heat. Other operations are the same as in the first embodiment.

When the cooling water temperature is low, the slide yoke 5
The drive plate 13 is moved rearward by the slide mechanism 57 through the gap 8, the two opposing surfaces 54 and 55 oppose each other with a minute gap, and the inside of the minute gap formed between the two opposing surfaces 54 and 55 is silicon. Filled with oil 15. Then, slippage occurs between the drive plate 13 that rotates integrally with the pulley 21 and the inner side wall 53 of the fixed housing 29, and the minute gap formed between the two opposed surfaces 54 and 55 is filled. A shear force acts on the silicon oil 15 to generate heat. The heat generated by the silicone oil 15 is transmitted to the cooling water flowing back in the cooling water passage 30, so that the silicone oil 15 is used as an auxiliary heating heat source.

[Other Embodiments] In this embodiment, the silicone oil 15 is used as the viscous fluid. However, the present invention is not limited to the silicone oil. Any liquid may be used as long as it is a viscous fluid such as a liquid or a highly viscous gas. In the present embodiment, two sliding surfaces 26 and 27 and two opposing surfaces 54,
Although the surface 55 is a flat surface, the surface is not limited to a flat surface, and a concave portion such as a groove may be provided as necessary.

In this embodiment, the engine 1 is used as a drive source.
Has been described, but an actuator such as an electric motor may be used as a drive source. In addition, although the cooling water of the engine 1 is used as the main heating heat source, cooling water of a heat-generating component such as an electric motor, lubricating oil of the engine 1, hydraulic oil of an automatic transmission, and fuel may be used.

In this embodiment, an example has been described in which the cooling fan 9 with a fluid coupling is used as an auxiliary device at the time of a fluid coupling. However, as an auxiliary device with a fluid coupling, an alternator with a fluid coupling, a compressor with a fluid coupling, a transmission with a fluid coupling. Alternatively, a hydraulic pump with a fluid coupling for power steering may be used. Further, it is not necessary to provide a rotating body (rotor) for an engine accessory on the drive shaft (second rotating member) 12.

In this embodiment, the drive shaft (first rotating member)
Although the impeller 22 of the cooling water pump 8 is integrally rotated at 11, the first rotating member is configured to integrally rotate engine accessories such as a cooling fan, an alternator, a compressor or a hydraulic pump for power steering. May be. In this embodiment, the pulley 21 is provided on the drive shaft (first rotary member) 11 and the drive shaft 11 is driven by the engine 1 by a belt. However, the first rotary member is directly connected to the output shaft of the drive source, A transmission may be interposed between the first rotating member and the transmission.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an overall configuration of a vehicle hot water heating device (first embodiment).

FIG. 2 is a sectional view showing an auxiliary heating device for a vehicle (first embodiment).

FIG. 3 is a flowchart showing an operation of the air conditioner ECU (first embodiment).

FIG. 4 is a sectional view showing a vehicle auxiliary heating device (second embodiment).

FIG. 5 is a sectional view showing an auxiliary heating device for a vehicle (third embodiment).

FIG. 6 is a sectional view showing an auxiliary heating device for a vehicle (fourth embodiment).

FIG. 7 is a sectional view showing an auxiliary heating device for a vehicle (fifth embodiment).

[Explanation of symbols]

Reference Signs List 1 engine (drive source) 2 heater core 3 vehicle auxiliary heating device 6 radiator 8 cooling water pump (engine auxiliary equipment) 9 cooling fan with fluid coupling (engine auxiliary equipment, auxiliary equipment with fluid coupling) 11 drive shaft (first rotating member) 12) Drive shaft (second rotating member) 13 Drive plate (first sliding plate, movable member) 14 Driven plate (second sliding plate) 15 Silicon oil (viscous fluid) 16 Heat exchanger 17 Electromagnetic brake (release fixed) Means) 21 pulley 22 impeller 25 cooling blade 26 sliding surface (first sliding surface) 27 sliding surface (second sliding surface) 29 housing 30a one-side heat exchange unit 30b other-side heat exchange unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hajime Ito 1-1-1, Showa-cho, Kariya-shi, Aichi, Japan

Claims (11)

[Claims] 1. A first rotating member having a first sliding surface driven by a driving source, a second rotating member having a second sliding surface opposed to the first sliding surface, And a fluid filled with a viscous fluid filled between the two first and second sliding surfaces to transmit the rotational force of the first rotating member to the second rotating member and generate heat when a shearing force is applied. (B) a heat exchanger for heating the main heating heat source by exchanging heat generated in the viscous fluid with a main heating heat source; and (c) fixing the second rotating member in a predetermined manner. A vehicle auxiliary heating device comprising: release fixing means for switching whether or not to fix the member to a member. 2. The auxiliary heating device for a vehicle according to claim 1, wherein the viscous fluid is released when the torque of the first rotating member is transmitted to the second rotating member via the viscous fluid. The viscous fluid is filled between the first and second sliding surfaces so that the calorific value of the viscous fluid is smaller than when the second rotating member is fixed to a predetermined fixing member by fixing means. A vehicle auxiliary heating device characterized by the above-mentioned. 3. The auxiliary heating device for a vehicle according to claim 1, wherein the two first and second sliding surfaces are configured to forcibly circulate the cooling water in a cooling water circuit. A vehicle auxiliary heating device provided in a housing of a pump. 4. The auxiliary heating device for a vehicle according to claim 1, wherein the two first and second sliding surfaces are the two first and second sliding surfaces.
An auxiliary heating device for a vehicle, wherein the auxiliary heating device is provided on opposing surfaces of two first and second sliding plates fixed to the rotating member so as to oppose each other. 5. The auxiliary heating device for a vehicle according to claim 4, wherein the heat exchanger is provided on one side of the first sliding plate so as to face a first sliding surface and an opposite end surface. A heat exchange portion, and a second heat exchange portion provided so as to face an end surface of the second slide plate opposite to a second slide surface, wherein the first slide plate and the one heat exchange portion are provided. An auxiliary heating device for a vehicle, wherein a fluid having a lower viscosity than the viscous fluid is filled between the second sliding plate and the second heat exchange portion. 6. A movable member which rotates integrally with a first rotating member driven by a driving source and is reciprocally movable in the axial direction with respect to the first rotating member. ) A first sliding surface provided on one end of the movable member, (c) a first facing surface provided on the other end of the movable member, and (d) a second rotating member for driving an auxiliary machine. (E) provided on one end side of a heat exchanger for exchanging heat with a main heating heat source, wherein the second sliding surface is disposed opposite to the first sliding surface. (F) a movable member driving means for driving the movable member to reciprocate in the axial direction; and (g) the movable member comprises the first and second slides. When displaced to a position where a minute gap is formed between the surfaces, the minute gap formed between the two first and second sliding surfaces is filled. While being the first movable member of the two, when displaced to a position small gap between the second opposing face is formed, the two first,
And a viscous fluid filled in a minute gap formed between the second facing surfaces. 7. The auxiliary heating device for a vehicle according to claim 1, wherein the driving source is an engine mounted on the vehicle, and the auxiliary device with a fluid coupling transmits cooling air to be sent to a radiator. It is characterized by being an engine auxiliary machine such as a cooling fan with a fluid coupling to generate, an alternator with a fluid coupling to generate electricity and charge the on-vehicle battery, or a hydraulic pump with a fluid coupling to generate hydraulic pressure to be a power source of the on-vehicle device. Auxiliary heating system for vehicles. 8. The vehicle auxiliary heating device according to claim 1, wherein the first rotating member is provided with a cooling water pump impeller for forcibly circulating cooling water in a cooling water circuit. An auxiliary heating device for a vehicle, comprising: 9. A first rotating member having a first sliding surface driven by a driving source, and a second rotating member having a second sliding surface opposed to the first sliding surface. (C) filled between the two first and second sliding surfaces to transmit the rotational force of the first rotating member to the second rotating member, and generate heat when a shearing force is applied. (D) release fixing means for switching whether or not to fix the second rotating member to a predetermined fixing member; and (e) the second rotating member fixes the predetermined fixing by the release fixing means. A vehicle heat exchanger comprising: a heat exchanger for exchanging heat generated in the viscous fluid with a main heating heat source when fixed to a member; and (f) auxiliary heating control means for controlling the release fixing means. Heating system. 10. The vehicle auxiliary heating device according to claim 9, wherein the auxiliary heating control means has a heat source temperature detection means for detecting a temperature of the main heating heat source, and the heat source temperature detection means detects the temperature of the main heating heat source. When the temperature of the main heating heat source is a low temperature equal to or lower than a predetermined temperature, the release fixing unit is controlled so as to fix the second rotating member to the predetermined fixing member, and the detection is performed by the heat source temperature detecting unit. An auxiliary heating device for a vehicle, wherein the release fixing means is controlled to release the second rotating member from the predetermined fixing member when the temperature of the main heating heat source is higher than a predetermined temperature. 11. The vehicle auxiliary heating device according to claim 9, wherein the first rotating member is provided with a pulley driven by a belt by the driving source. For auxiliary heating equipment.