KR19980042817A - Viscose heater - Google Patents

Abstract

Most of the viscous fluid in the heat generating chamber avoids the shearing action between the gap between the rotor and the wall surface of the heat generating chamber to prolong the life of the viscous fluid.

The heat generating chamber 7 is formed between the front housing 1 and the rear housing 2. The support shaft 11 is eccentrically protruded and installed in the large diameter part 8a of the drive shaft 8 supported by the front housing 1, and the cylindrical rotor 12 is supported by the support shaft 11 at the center thereof. It is fixed so that relative rotation is impossible in the state which coincides with the center of the shaft 11. The rotor 12 is such that the distance between its first end face 12a and the front end face of the rear housing 2 is of a predetermined size that can efficiently give shear action to the viscous fluid present in the gap δ. It is fixed to the support shaft 11. The storage chamber 13 and the annular water jacket 14 are partitioned between the rear surface of the rear housing 2 and the front end surface of the rear plate 3 so as to correspond to the heat generating chamber 7.

Description

Viscose heater

The present invention relates to a viscose heater that heats heat generated by partitioning a heat generating chamber and a heat radiating chamber in a housing and shearing the viscous fluid contained in the heat generating chamber with a rotor.

A viscose heater using the driving force of the engine of a vehicle is drawing attention as a heat source for vehicle mounting. For example, Japanese Patent Laid-Open No. 2-246823 discloses a viscose heater embedded in a vehicle heating device.

In this viscose heater, the front and rear housings are connected to each other in a state where they face each other, and a heat jacket and a water jacket (heat dissipation chamber) are formed inside the heat generating chamber. The housing is supported so that the drive shaft can rotate through a bearing device, and a rotor is fixed to one end of the drive shaft so as to be integrally rotated in the heat generating chamber. The front and rear outer walls of the rotor and the inner wall of the heating chamber facing them constitute labyrinth grooves which are close to each other, and a viscous fluid (for example, silicone oil) is interposed between the wall of the heating chamber and the rotor wall surface. .

Thus, when the driving force of the engine is transmitted to the drive shaft, the rotor rotates together with the drive shaft in the heat generating chamber, and a viscous fluid interposed between the heat generating chamber inner wall portion and the rotor outer wall portion is sheared by the rotor to generate heat based on fluid friction. Heat generated in the heat generating chamber is heat-exchanged with the circulating water flowing in the water jacket and its heating circulating water is supplied to an external heating circuit to provide heating of the vehicle.

In the conventional viscose heater, most of the viscous fluid contained in the heat generating chamber exists in a slight gap between the rotor and the wall surface of the heat generating chamber. Therefore, the rotation of the engine is transmitted to the drive shaft of the viscose heater, and the rotational speed of the rotor is directly affected by the engine speed. Therefore, in the conventional viscose heater, the viscous fluid existing in the heat generating chamber during the high speed rotation of the engine is hardly rested and is in a state of being continuously sheared at a high temperature. As a result, deterioration of the viscous fluid is promoted. When the viscous fluid deteriorates, its viscosity decreases, resulting in a decrease in the amount of heat generated per revolution of the rotor and incapable of securing the required amount of heat, resulting in a decrease in performance.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems, and an object thereof is to avoid the fact that most of the viscous fluid contained in the heat generating chamber is continuously sheared in the gap between the rotor and the wall surface of the heat generating chamber, thereby extending the life of the viscous fluid. To provide a viscose heater that can be.

In order to achieve the above object, in the invention of claim 1, in the viscose heater, the heat generated by partitioning the heat generating chamber and the heat dissipating chamber in the housing and shearing the viscous fluid stored in the heat generating chamber with the rotor is provided. The rotor is supported by a drive shaft and an eccentric support shaft which transmits the rotational force of an external drive source to the rotor, so that it can pivot in the heating chamber as the drive shaft rotates, and the rotor is at least viscous between its first end face and the wall surface of the heating chamber. The fluid was installed to generate fluid friction.

In this viscose heater, the support shaft revolves around the axis of the drive shaft as the drive shaft rotates. The rotor pivots inside the heat generating chamber together with the support shaft. The rotor generates fluid friction with the viscous fluid between at least the first end face and the wall surface of the heat generating chamber with the turning to generate the viscous fluid. The heat generated is thus exchanged with the circulating fluid in the heat dissipation chamber. Since the rotor pivots in the heating chamber, there is a space in the heating chamber to allow the rotor to turn, and some of the viscous fluid contained in the heating chamber exists in its space. Therefore, with the turning of the rotor, the viscous fluid subjected to the shearing action is sequentially replaced between the rotor and the wall surface of the heating chamber, and the specific viscous fluid is continuously subjected to the shearing action for a long time. As a result, premature deterioration of the viscous fluid is prevented.

In invention of Claim 2, in the invention of Claim 1, the heat dissipation chamber is provided in the outer position of the heat generating chamber facing at least the 1st end surface.

In the present invention, heat generated in the heat generating chamber is efficiently heat exchanged with the circulating fluid in the heat dissipating chamber.

In the invention according to claim 3, in the invention according to claim 1 or 2, the rotor is provided with a viscous fluid provided on the first end surface so as to change the gap between the end face and the wall surface of the heating chamber in the rotational direction of the rotor. It is equipped with a means of improving shear force.

In the present invention, the gap between the first end surface of the rotor and the wall surface of the heating chamber is changed in the direction of rotation of the rotor, so that the viscous fluid is restricted in the viscous fluid when the viscous fluid moves in the gap due to the size of the gap. do. As a result, the shear force acting on the viscous fluid at the time of turning of the rotor is improved, and the amount of heat generated by the viscose heater is improved.

In the invention according to claim 4, in the invention according to any one of claims 1 to 3, the rotor has a circular cross section orthogonal to the support shaft, and the heat generating chamber has a distance between its inner circumferential surface and the outer circumferential surface of the rotor. The support shaft is always in a constant relationship at the time of turning, and at the time of turning the rotor, a part of its outer circumferential surface is such that the shear fluid contributing to the heat generation can be provided to the viscous fluid interposed between the inner circumferential surface of the heating chamber and the support shaft. Is supported.

In the present invention, not only the viscous fluid existing between its cross section and the wall surface of the heat generating chamber when the rotor is turned, but also the viscous fluid existing at a position where the distance between the outer circumferential surface of the rotor and the inner circumferential surface of the heating chamber is small. Therefore, the amount of heat generated per rotation of the drive shaft increases.

In the invention according to claim 5, in the invention according to any one of claims 1 to 4, the rotor is fixed to the support shaft so that relative rotation is impossible.

In the present invention, since the rotors are fixed to the support shaft in such a way that they cannot be rotated with each other, even when the rotor is rotated around the driving shaft with the reaction force in the direction of rotation and the reverse direction in the viscous fluid with respect to the end surface or the peripheral surface of the rotor Does not rotate around the support shaft. Therefore, the force acting on the rotor by the rotation of the drive shaft is efficiently converted into the fluid friction of the viscous fluid.

1 is a cross-sectional view showing a viscose heater of a first embodiment.

2 is a cross-sectional view taken along the line II-II of FIG. 1.

3 is a cross-sectional view taken along the line III-III of FIG. 1.

4 is a schematic diagram showing the movement of the rotor.

5 is a partial cross-sectional view showing a viscose heater of a second embodiment.

6A is a partial cross-sectional view showing a viscose heater of a third embodiment.

6B is a partially enlarged cross-sectional view.

7 is a partial sectional view showing a water jacket of a modification.

8 is a partial cross-sectional view showing a water jacket of another modification.

9A to 9E are front views showing the rotor of the modification.

* Explanation of symbols for main parts of the drawings

1: Front housing constituting the housing

2: rear housing constituting the housing

3: rear plate constituting the housing 7: heat generating chamber

8 drive shaft 11 support shaft

12, 24: rotor 12a, 24b: first end face

14, 26: water jacket as heat sink

28: Blood as a means of improving shear force

29: groove as a means for improving shear force

30: Slit as a shearing force improvement means

F: silicone oil as viscous fluid

(1st embodiment)

Next, 1st Embodiment which actualized this invention to the viscose heater built in the heating apparatus of a vehicle is demonstrated according to FIGS.

As shown in FIG. 1, the front housing 1, the rear housing 2, and the rear plate 3 pass through the rear plate 3 and the rear housing 2 and are screwed to the front housing 1. It is fastened by the bolt 4 (three in this embodiment). An O-ring 5 as a seal member is fitted between the front housing 1 and the rear housing 2, and a gasket 6 as a seal member is fitted between the rear housing 2 and the rear plate 3. The rear housing 2 is formed of a material having excellent thermal conductivity (for example, aluminum or an aluminum alloy), and the rear plate 3 is formed of a material having poor thermal conductivity (for example, stainless).

The front housing 1 is open to the rear and is formed with a cylindrical recess 1a, and the front of the rear housing 2 is provided with a recess 2a facing the recess 1a and both recesses ( The heat generating chamber 7 is formed by 1a and 2a. In the front housing 1, the shaft support 1b is formed so that the center is located coaxially with the center of the heat generating chamber 7 and the drive shaft 8 is rotatable to the shaft support 1b via the bearing 9. Supported. An angular bearing with a lip seal is used for the bearing 9. That is, the viscous fluid contained in the heat generating chamber 7 is prevented from leaking outside between the outer ring and the inner ring of the bearing 9. The bearing 9 is fixed at a predetermined position with one end abutting the front housing 1 and the other end abutting the snap ring 10. The drive shaft 8 is formed with a large diameter portion 8a at its rear end and supported by a bearing 9 at the large diameter portion 8a.

The support shaft 11 is fixed to the large diameter portion 8a of the drive shaft 8 so as to project toward the heat generating chamber 7 at a position eccentric with the drive shaft 8. The support shaft 11 is fixed to the support shaft 11 so that relative rotation is impossible with respect to the support shaft 11 in the state whose center coincides with the center of the support shaft 11.

The rotor 12 is a viscous fluid whose first end face 12a, in this embodiment, is spaced between the end face facing the rear housing 2 and the front end face of the rear housing 2, in its gap δ. It is fixed to the support shaft 11 so that it may become a predetermined size (for example, 0.1-0.5 mm) which can give a shear action | efficiency efficiently. The heat generating chamber 7 is formed such that its inner circumferential surface has a constant radius from the central axis of the drive shaft 8. The rotor 12 is connected to a viscous fluid whose distance between its outer circumferential surface and the inner circumferential surface of the heat generating chamber 7 is interposed between a portion of its outer circumferential surface and the inner circumferential surface of the heat generating chamber 7 at the time of turning of the rotor 12. It is formed to a size that can effectively impart a shearing action.

Between the rear surface of the rear housing 2 and the front end surface of the rear plate 3, the circumferential storage chamber 13 and the annular water jacket 14 are partitioned so as to correspond to the heat generating chamber 7. The water jacket 14 constitutes a heat dissipation chamber adjacent to the heat generating chamber 7. The heat generating chamber 7 and the storage chamber 13 communicate with each other via the holes 2b and 2c formed in the rear housing 2. The heat generating chamber 7 and the storage chamber 13 are filled with silicone oil F as a viscous fluid as required amount. The hole 2b communicates with the lower portion of the storage chamber 13 and the heat generating chamber 7, and the hole 2c communicates with the upper portion of the storage chamber 13 and the heat generating chamber 7, and the silicone oil has a top surface thereof. It is accommodated in the storage chamber 13 so that it may become below the position corresponding to the hole 2c.

The rear housing 2 has a partition 2d (shown in FIG. 3 only) formed to partition and extend the water jacket 14 in a radial direction, and a circular arc extending in the circumferential direction along the outside of the reservoir in the water jacket 14. Two rows of pins 2e having a shape protrude. The tip of the partition 2d is in contact with the gasket 6 and the tip of the pin 2e is formed in a state away from the gasket 6.

As shown in FIG. 3, the outer periphery of the rear housing 2 includes an inlet port 15 that draws circulating water to the water jacket 14 in a heating circuit (not shown) installed in the vehicle, and the water jacket 14. The water discharge port 16 which discharges circulating water for a heating circuit is formed. The water inlet port 15 and the water outlet port 16 are formed in the position which pinched the partition 2d. Therefore, the circulating water as the circulating fluid introduced into the water jacket 14 at the inlet port 15 is guided to the fin 2e, and after the inside of the water jacket 14 in the clockwise direction of FIG. 16 is sent out.

An electromagnetic clutch 17 is provided near the outer end of the drive shaft 8 and the support cylinder portion 1c protruding from the front housing 1. The electromagnetic clutch 17 slides on the pulley 19 rotatably supported on the support cylinder 1c via the angular bearing 18 and on the support ring 20 fixed to the outer end of the drive shaft 8. The provided disk-shaped clutch plate 21 is provided. The leaf spring 22 is provided in the back side of the clutch plate 21. The leaf spring 22 is fixed to the support ring 20 at its nearly center portion, and its outer end (both upper and lower ends in Fig. 1 are connected to the outer circumference of the clutch plate 21 by rivets, etc.). The front face of the plate 21 faces the end face 19a of the pulley 19, and the end face 19a of the pulley 19 serves as another clutch plate. And an annular solenoid coil 23 is supported by the front housing 1. The solenoid coil 23 passes through the end face 19a of the pulley 19. An electromagnetic force (suction force) is exerted on the clutch plate 21.

Next, the operation of the viscose heater constructed as described above will be described. When the engine is driven while the viscose heater is connected to the external heating circuit, the rotational force of the engine is transmitted to the pulley 19 via the belt. In this state, when the solenoid coil 23 of the electromagnetic clutch 21 is excited, the clutch plate 21 is suction-bonded to the end face 19a of the pulley 19 against the spring force of the leaf spring 22 by its electromagnetic force. do. The rotation of the pulley 19 is transmitted to the drive shaft 8 via the clutch plate 21 and the support ring 20 by the coupling between the clutch plate 21 and the pulley 19. The rotational speed of the drive shaft 8 is increased or decreased corresponding to the rotational speed of the external drive source (engine).

As the drive shaft 8 rotates, the support shaft 11 revolves around the axis of the drive shaft 8, and as shown in FIG. 4, the rotor 12 moves together with the support shaft 11 in the heat generating chamber 7. Turn to A → B → C → D. As the rotor 12 rotates, shear force acts on the silicone oil between the first end surface 12a and the rear wall surface of the heat generating chamber 7 to generate fluid friction, thereby generating the silicone oil. In addition, since the distance between the outer circumferential surface of the rotor 12 and the inner circumferential surface of the heat generating chamber 7 changes during one revolution of the rotor 12 when the rotor 12 is rotated, heat is generated by fluid friction such as journal bearing. . The generated heat is heat-exchanged with the circulating water in the water jacket 14 and the heated circulating water is provided to the heating in the vehicle interior via a heating circuit (not shown).

Since the rotor 12 pivots in the heat generating chamber 7, there is a space in the heat generating chamber 7 to allow the rotor 12 to rotate, and a part of the viscous fluid contained in the heat generating chamber 7 is its space. Exists in As a result of the turning of the rotor 12, the silicone oil subjected to the shearing action is sequentially replaced between the rotor 12 and the rear wall surface of the heat generating chamber 7, and the specific silicone oil undergoes the continuous shearing action for a long time. Avoided. As a result, even when the engine is rotating at high speed, the silicone oil is not subjected to shearing action continuously at a high temperature for a long time, and premature degradation of the silicone oil is prevented.

The viscose heater of this embodiment has the following effects.

(A) Since the rotor 12 pivots in the heat generating chamber 7 to impart a shearing action to the silicone oil, the silicone oil present in the space allowing the rotor 12 in the heat generating chamber 7 to swing is sheared. In addition, the silicone oil which is subjected to shearing action in turn is substituted. Therefore, the specific silicone oil is avoided from being continuously sheared for a long time, and premature degradation of the silicone oil is prevented.

(B) In addition to the silicone oil existing between its end face 12a and the rear wall surface of the heat generating chamber 7 at the time of turning the rotor 12, a part of the outer circumferential surface of the rotor 12 and the inner circumferential surface of the heat generating chamber 7 are provided. Shear always imparts shear action to the silicone oil. Therefore, the amount of heat generated per rotation of the drive shaft 8 is increased as compared with the configuration in which the shearing action is applied to the silicon oil by only the first end surface 12a, and the heat generation efficiency is improved.

(C) When the rotor 12 pivots inside the heat generating chamber 7 around the driving shaft 8 because the rotor 12 is fixed to the support shaft 11 so as not to rotate with each other. The rotor 12 does not rotate about the support shaft 11 even when the reaction force in the reverse direction and the reverse direction in the silicone oil with respect to the end surface or the peripheral surface of the. Therefore, the force acting on the rotor 12 by the rotation of the drive shaft 8 is efficiently converted to the fluid friction of the silicone oil.

(D) Since the water jacket 14 is provided at an outer position of the heat generating chamber 7 facing the first end surface 12a close to the heat generating source, the heat generated in the heat generating chamber 7 is efficiently transferred to the water jacket 14. ), The heat exchange efficiency of the circulating water is improved.

(E) Since the circulating water is guided in the water jacket 14 to the fins 2e and circulated in a predetermined path, the water jacket 14 does not cause shortage or retention of the circulating water flow path. For this reason, heat exchange with the circulation water of the water jacket 14 in the heat generating chamber 7 can be performed efficiently.

(F) Since the fins 2e are formed to protrude into the water jacket 14 from the heat generating chamber 7, the contact area between the circulating water in the water jacket 14 and the wall surface around the heat generating chamber 7 increases. , Heat exchange efficiency is improved. In addition, since the tip of the pin 2d is not in contact with the surface (rear plate 3) facing each other, heat is transmitted to the rear plate 3 via the pin 2e to prevent heat from radiating to the outside. Heat exchange efficiency is improved.

(G) As the storage chamber 13 is installed, the silicone oil in the heat generating chamber 7 returns to the storage chamber 13 from the hole 2c with the rotation of the rotor 12, and is stored in the hole 2b. Silicone oil in the chamber 13 is supplied into the heat generating chamber 7. Therefore, the same silicone oil is not stored in a high temperature state in the heat generating chamber 7 for a long time, and the life of the silicone oil becomes longer.

(H) Since the rear housing 2 is made of a material having good thermal conductivity, heat generated in the heat generating chamber 7 is efficiently transferred to the circulating water of the water jacket 14. In addition, since the rear plate 3 is formed of a material having poor thermal conductivity, heat in the water jacket 14 is prevented from dissipating heat through the rear plate 3.

(2nd embodiment)

Next, a second embodiment will be described with reference to FIG. 5. This embodiment differs from the embodiment in that the shearing action is imparted to the silicone oil as the viscous fluid in the heat generating chamber 7 also at the second end face opposite to the first end face of the rotor. Specifically, the shapes of the rotor and the heat generating chamber 7 are different from those in the embodiment, and the other configurations are the same as in the above-described embodiment.

The rotor 24 has a large diameter portion 24a formed toward the rear housing 2, and the rear end of the large diameter portion 24a constitutes the first end surface 24b and the front end of the large diameter portion is the second. The end surface 24c is comprised. The heat generating chamber 7 also has a large diameter portion 7a formed toward the rear housing 2 corresponding to the shape of the rotor 24. The diameter of the small diameter portion 7b of the heat generating chamber 7 is set to allow the rotor 24 to rotate and to increase the area of the wall surface 7c facing the second end surface 24c as large as possible. The size of the gap δ between the second end surface 24c and the wall surface 7c is set to the same size as the gap δ between the first end surface 24b and the front surface of the rear housing 2.

Also in this embodiment, the rotor 24 rotates inside the heat generating chamber 7 with the rotation of the drive shaft 8 as in the above embodiment. And by turning of the rotor 24, between the 1st end surface 24b and the front surface of the rear housing 2, between the 2nd end surface 24c and the wall surface 7c which the heat generating chamber 7 opposes. Shear action is given to the silicone oil in between, and the silicone oil generates heat. In addition, the silicone oil is sheared and generates heat between a part of the peripheral surface of the rotor 24 and the inner peripheral surface of the heat generating chamber 7. The heat generated in the heat generating chamber 7 is heat-exchanged with the circulating water in the water jacket 14.

In this embodiment, in addition to exerting the effects (a) to (a) of the above embodiment, heat is generated by shearing of the silicone oil even between the second end face 24c and the wall surface 7c facing the heat generating chamber 7. This causes the heat generation efficiency per rotation of the drive shaft 8 to be improved. In addition, the rotor weight is reduced and the power consumption is reduced because the rotor is responded to by increasing the area contributing to the heat generation without increasing the rotor volume.

(Third embodiment)

Next, a third embodiment will be described with reference to Figs. 6A and 6B. In this embodiment, the thickness of the rotor 12 is made thin, and the heat generating chamber 7 is made small in correspondence with this, and the valve 25 which can open and close the hole 2b in the storage chamber 13 is provided. The point of installation differs, and the other structure is the same as that of 1st Embodiment. The valve 25 has a function of closing the hole 2b when the temperature of the heat generating chamber 7 is above a predetermined temperature, and opening the hole 2b below the temperature thereof. For example, the valve 25 may be formed of bimetal or shape memory alloy. Formed. The predetermined temperature means a temperature at which the temperature in the heat generating chamber 7 causes the deterioration of the silicone oil. The deformation temperature of the valve 25 is not the same as this predetermined temperature, but a value in consideration of the temperature difference between the heat generating chamber 7 and the set position of the valve 25, that is, a temperature lower than the predetermined temperature is preferable.

In the configuration of this embodiment, when the temperature in the heat generating chamber 7 is lower than the predetermined temperature, the valve 25 is maintained in the open position indicated by solid lines in FIGS. 6A and 6B and the silicone oil in the storage chamber 13 generates heat. Since it flows into the chamber 7, the silicone oil circulates in the heat generating chamber 7 and the storage chamber 13 as in the first embodiment. On the other hand, when the temperature of the heat generating chamber 7 is higher than the predetermined temperature, the valve 25 is deformed and placed in the closed position indicated by chain lines in FIG. 6 (b), and the silicone oil in the storage chamber 13 is heated in the heat generating chamber 7. Inflow into) becomes blocked. When the rotor 12 continues to rotate in this state, the silicon oil in the heat generating chamber 7 is returned to the storage chamber 13 via the hole 2c, and the amount of silicon oil in the heat generating chamber 7 is smaller than the amount necessary for heat generation. It is suppressed that silicone oil is excessively exothermic. Accordingly, the life of the silicone oil is extended as compared with the above embodiments.

In addition, it is not limited to each said embodiment, For example, it can also be specified as follows.

(1) The water jacket 14 is formed not only at the position facing the first end surfaces of the rotors 12, 24 but also at the outer circumference of the heat generating chamber 7. For example, as shown in FIG. 7, the water jacket 26 is formed by forming a substantially annular groove open toward the rear housing 2 in the front housing 1. The gasket 6 is fitted between the front housing 1 and the rear housing 2 to prevent leakage of the circulating water from the water jacket 26. The water jacket 26 is provided with an inlet port and an outlet port (both not shown) separately. In addition, the circulating water introduced into the viscose heater in the heating circuit (not shown) is introduced into both water jackets 14 and 26, and at the same time, the circulating water discharged from the water jackets 14 and 26 joins and is returned to the heating circuit.

In addition, as shown in FIG. 8, the rear housing 2 is formed in the shape surrounding the outer periphery of the heat generating chamber 7, and the groove 27 which extends substantially annularly along the outer periphery of the heat generating chamber 7 is a water jacket. You may form so that it may communicate with (14). In any case, heat exchange efficiency improves because the water jacket is provided only at the outer position of the heat generating chamber 7 facing the first end face 12a of the rotor 12.

(2) The shear force improvement means of a viscous fluid is formed in the 1st end surface 12a, 24b of the rotor 12, 24. The shearing force improving means should have an action of changing the gap between the first end face 12a and the wall surface facing the heat generating chamber 7 in the turning direction of the rotor 12, for example, as shown in FIG. 9A. Likewise, a plurality of circular bloods (concave portions) 28 that are biased around the outer circumference of the first end surface 12a are formed. In addition, as shown in FIG. 9B, a plurality of radially extending grooves 29 of the rotor 12 are formed, or instead of the grooves 29, the rotor 12 penetrates in the thickness direction as shown in FIG. 9C. The slit 30 is formed. The first end surface 12a of the blood 28, the groove 29, and the slit 30 is better not to be chamfered, but to have a sharp edge.

Thus, when the above-mentioned shear force improvement means is provided in the 1st end surface 12a, the area of the heat generating effective area | region of the 1st end surface 12a will reduce. However, the magnitude | size of the clearance gap between the 1st end surface 12a and the opposing wall surface of the heat generating chamber 7 changes in the rotation direction of the rotor 12. As shown in FIG. As a result, in the portion where the gap is increased in addition to the surface tension of the viscous fluid (parts corresponding to the blood 28 and the like), the effect of confining the molecules of the viscous fluid is encouraged, and the viscous fluid accompanying the rotation of the rotor 12 is enhanced. The shearing force is improved. As a result, the amount of heat generated by the viscose heater is increased. However, when the ratio of the total area of the shearing force improving means to the area of the first end face 12a increases, the area of the heat generating effective area becomes excessively small, thereby reducing the amount of heat generated by the viscose heater. Therefore, it is preferable that the total area of the shear force improving means is 20% or less in area of the first end face 12a.

In addition, gas mixed in the viscous fluid is collected in the blood 28, the groove 29, or the slit 30, so that the gas enters the gap between the first end surface 12a, which is an exothermic effective area, and the wall surface of the rear housing 2. Almost never exist. For this reason, it becomes possible to apply shear force efficiently with a viscous fluid.

In the case where the blood 28 is provided as the shear force improving means, the manufacturing becomes easier as compared with the case in which the groove 29 or the slit 30 is provided. The shape of the blood 28 is not limited to a circular shape, but may be a suitable shape such as a polygon or an ellipse such as a triangular or quadrilateral. Instead of the blood 28, it may be a through hole.

In the case where the groove 29 or the slit 30 is provided as a shearing force improving means, the number of the grooves 29 and the slit 30 is at least a gap between the first end surface 12a and the wall surface facing the heat generating chamber 7. The range which exhibits the effect | action which changes in the turning direction of the rotor 12 becomes wider. In addition, when the amount of gas collected in the groove 29 or the slit 30 increases, the gas escapes from the peripheral surface side of the rotor 12 into the heat generating chamber 7 and reenters between the wall surfaces facing the first end surface 12a. Degradation of the action can be avoided.

The blood 28, the groove 29 and the slit 30 may be formed in combination.

(3) In the case of the configuration in which the viscous fluid is sheared at both end faces of the rotor 24 as in the second embodiment, the first end face 24b and the second end face 24c are as described above. Blood 28, holes, grooves 29, and slits 30 may be provided. In the case of the hole and the slit 30, a common one can be used at both end faces. The same effect as described above is also obtained when the second end face is provided.

(4) Shear force improvement on the wall surface of the heating chamber 7 facing their end faces 12a, 24b, 24c without installing the shear force improving means on the first end faces 12a, 24b and the second end face 24c. Blood or a groove may be formed as a means. In this case, the same effect is achieved. In addition, shearing force improving means may be provided at both the rotors 12 and 24 and the heat generating chamber 7.

(5) Convex portions may be provided on the end surfaces of the rotors 12 and 24 or on the wall surface of the heat generating chamber 7 facing each other as the shearing force improving means. The convex portions have the same shape as the blood 28, the grooves 29, and the slits 30. Since the height of the convex portion (protrusion amount of the end face or the wall space) is smaller than the interval at which the shear action effectively acts on the viscous fluid between the faces facing the rotor when the convex portion is absent, processing precision is required. . However, the exothermic efficiency is improved than when the blood 28, the groove 29 or the slit 30 is provided.

(6) The shape of the rotors 12, 24 is not limited to a circular cross-sectional shape orthogonal to the support shaft 11, for example, oval or fan-shaped, triangular, 4, as shown in Figs. 9D and 9E. A polygon such as a square may be used. In the case of oval or fan shape, the proportion of the volume of the rotors 12 and 24 in the heat generating chamber 7 decreases, and the viscous fluid in the state in which the viscous fluid in the heat generating chamber 7 is subjected to shearing action is applied. The proportion of viscous fluids in the unsheared state is increased. As a result, the life of the viscous fluid is extended more.

(7) In the first and second embodiments, the shearing action that effectively contributes to the viscous fluid between the peripheral surfaces of the rotor and the shape of the heat generating chamber 7 and the rotors 12 and 24 cannot be imparted. The spacing, that is, the spacing between the inner peripheral surface of the heat generating chamber 7 and the peripheral surface of the rotor may be increased. In this case, the ratio of the volume of the rotor to the volume in the heat generating chamber 7 decreases, the amount of viscous fluid that can be accommodated in the heat generating chamber 7 increases, and the life of the viscous fluid is extended even without the storage chamber 13. do.

(8) In the first and second embodiments, the rotors 12 and 24 may be formed in such a thickness that their peripheral surfaces contribute little to heat generation. In this case the length of the housing in the axial direction can be shortened and the viscose heater becomes compact.

(9) In the first embodiment, as the rotor 12, a hollow rotor having a longer length in the axial direction than the length in the radial direction may be used.

(10) The storage chamber 13 may be omitted. Even if the storage chamber 13 is omitted, there is a space in the heat generating chamber 7 to allow the rotors 12 and 24 to rotate. And since a considerable amount of viscous fluid can be accommodated in its space, the life of the viscous fluid is extended in comparison with the conventional viscose heater even without the storage chamber. In addition, when the water jacket is formed to correspond to the entire rear end surface of the heat generating chamber 7 by using the space in which the storage chamber 13 exists, heat exchange to the circulation water of heat in the heat generating chamber 7 is performed more efficiently.

(11) The rotors 12 and 24 may be supported so that relative rotation is possible with respect to a support shaft.

(12) You may form so that the front-end | tip of the fin 2e protrudingly provided in the water jacket 14 may face the surface which faces, or the fin 2e may be abbreviate | omitted.

(13) By omitting the electromagnetic clutch 17, the pulley 19 is integrally supported on the drive shaft 8 so as to be rotatable, and the driving force of the engine is directly transmitted to the drive shaft 8 via the pulley 19. You may also

In addition, the term "viscosity fluid" as used herein means various media that generate heat based on fluid friction upon shearing of the rotor, and are not limited to high viscosity liquids or semi-fluids, and are not limited to silicone oils.

The inventions other than those described in the claims grasped in the above-described embodiments and modifications are described together with the effects below.

(1) The invention according to any one of claims 1 to 5, wherein the rotor generates heat to generate fluid friction with the viscous fluid between the wall surface of the heat generating chamber also at the end surface opposite to the first end surface. A thread is formed. In this case, the amount of heat generated per revolution of the drive shaft increases.

As described above, according to the invention of Claims 1 to 5, most of the viscous fluids contained in the heat generating chamber are avoided to be subjected to shearing action in the gap between the rotor and the wall surface of the heat generating chamber. It can extend the life.

According to the invention of claim 2, the heat generated in the heat generating chamber is efficiently heat-exchanged with the circulating fluid in the heat dissipating chamber.

In the invention according to claim 3, the shear force acting on the viscous fluid during the turning of the rotor is improved, and the amount of heat generated by the viscose heater is improved.

In the invention of claim 4, not only the viscous fluid existing between the end surface of the rotor and the wall surface of the heating chamber when the rotor is turned, but also the viscous fluid existing at a position where the distance between the outer peripheral surface of the rotor and the inner peripheral surface of the heating chamber is small. In response, the amount of heat generated per rotation of the drive shaft increases.

In the invention of claim 5, the rotor does not rotate about the support shaft when the rotor rotates around the heat generating chamber around the drive shaft, even if the rotor is subjected to reaction forces in the opposite direction of rotation in the viscous fluid with respect to the cross section or the peripheral surface of the rotor. By rotation, the force acting on the rotor is efficiently converted into the fluid friction of the viscous fluid.

Claims (5)

The heat generating chamber 7 and the heat dissipating chambers 14 and 26 are partitioned in the housings 1 to 3, and the heat generated by shearing the viscous fluid contained in the heat generating chamber 7 to the rotors 12 and 24 is described above. In the viscose heater, which heat exchanges with the circulating fluid in the heat dissipation chambers 14 and 26, The rotors 12 and 24 are supported by a drive shaft 8 and an eccentric support shaft for transmitting the rotational force of an external drive source to the rotor, and are pivotable in the heat generating chamber 7 in accordance with the rotation of the drive shaft 8. Viscose heater, characterized in that the rotor (12, 24) is installed to generate fluid friction with the viscous fluid between its first end faces (12a, 24a) and the wall surface of the heat generating chamber (7). The viscose heater according to claim 1, wherein the heat dissipation chamber (14) is provided at an outer position of the heat generating chamber facing the first end surfaces (12a, 24a) of the rotor (12). 3. The rotor (12) according to claim 1 or 2, wherein the rotor (12, 24) causes the first end surfaces (12a, 24a) to change the gap between the end surfaces and the wall surface of the heat generating chamber (7) in the rotational direction of the rotor. And a shear force improving means (28, 29, 30) of the viscous fluid. 3. The rotor (12) according to claim 1 or 2, wherein the rotor (12, 24) has a circular cross section perpendicular to the support shaft, and the heat generating chamber (7) has a distance between the inner circumferential surface and the outer circumferential surface of the rotor when the rotor is turned. Is always in a constant relation, and is supported so that a part of its outer circumferential surface at the time of turning the rotor becomes a distance capable of imparting shear action contributing to heat generation to the viscous fluid interposed between the inner circumferential surface of the heat generating chamber 7 Viscose heater, characterized in that supported on the shaft. The viscose heater according to claim 1 or 2, wherein the rotor (12, 24) is fixed relative to the support shaft (11) without rotation.