JPH10193953A - Viscous heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate circulation of a viscous fluid to the front and rear of a rotor in a heating chamber so as to delay degradation of the viscous fluid. SOLUTION: A rotor 15 has forward inclined communicating holes 16 piercing longitudinally in an axial direction and extended in a non-radial direction (rotating tangential direction) of the rotor and also extended inclining onto the front end face 15a side in relation to the rotating direction P of the rotor 15. Each forward inclined communicating hole 16 is so formed that its end part on the rotating direction P side of the rotor 15 is opened to the front end face 15a of the rotor 15 and that its end part on the reverse side to the rotating direction P of the rotor 15 is opened to the rear end face of the rotor 15. When the rotor 15 is rotated, a viscous fluid on the front side of the rotor 15 is taken into the rotor rotating direction side opening end part of the forward inclined communicating hole 16 and discharged to the rear side of the rotor 15 from the rotor rotating direction reverse side opening end part of the forward inclined communicating hole 16. Circulation of the viscous fluid in a heating chamber is improved by the generation of forced flow of the viscous fluid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viscous heater in which a viscous fluid generates heat by shearing and exchanges heat with a circulating fluid circulating in a radiating chamber for use as a heating heat source.

[0002]

2. Description of the Related Art Hitherto, Japanese Patent Application Laid-Open No. 2-246823 discloses a viscous heater used for a vehicle heating device. In this viscous heater, the front and rear housings are fastened by through bolts in a state of being opposed to each other, and a heat generating chamber is formed inside and a water jacket is formed outside the heat generating chamber. In the water jacket, circulating water is taken in from an inlet port and circulated from an outlet port to be sent to an external heating circuit. A drive shaft is rotatably supported on the front housing via a bearing device, and a rotor that is rotatable in the heating chamber is fixed to the drive shaft. Labyrinth grooves which are close to each other are formed in the front and rear end surfaces of the peripheral portion of the rotor and the wall surface of the heat generating chamber, respectively, and both labyrinth grooves are engaged while maintaining a small gap (liquid-tight gap). A viscous fluid such as encapsulated silicone oil is interposed in the liquid-tight gap.

In this viscous heater incorporated in a vehicle heating device, if a drive shaft is driven by an engine,
Since the rotor rotates in the heating chamber, the viscous fluid sealed in the heating chamber and interposed in the liquid-tight gap generates heat by shearing. This heat is exchanged with the circulating water in the water jacket, and the heated circulating water is supplied to the heating of the vehicle in the heating circuit.

[0004]

However, in the above-described conventional viscous heater, the liquid-tight gap between the front end surface of the rotor and the rear wall surface of the heat generating chamber and the liquid-tight gap between the rear end surface of the rotor and the front wall surface of the heat generating chamber. The target gap is communicated only through a slight gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber,
The viscous fluid is difficult to circulate around the rotor in the heating chamber. For this reason, only a specific viscous fluid is easily sheared at all times, and the viscous fluid is liable to be deteriorated. Deterioration of the viscous fluid reduces the heat generation efficiency of the viscous heater after long-term use.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to solve the above problem by facilitating circulation of a viscous fluid around a rotor in a heating chamber to delay the deterioration of the viscous fluid. It is.

[0006]

[Means for Solving the Problems]

(1) The viscous heater according to the first aspect of the present invention has a housing in which a heat generating chamber and a heat radiating chamber adjacent to the heat generating chamber for circulating a circulating fluid are formed, and the housing is rotatably supported via a bearing device. A drive shaft, a rotor rotatably provided in the heat generating chamber by the drive shaft, and forming a liquid-tight gap between the wall of the heat generating chamber, and a rotor sealed in the heat generating chamber. A viscous heater having a viscous fluid generated by the rotation of the rotor through the gap,
A front inclined communication hole which is formed so as to penetrate the rotor in the front-rear direction and extend in a non-radial direction of the rotor and to incline toward a front end face side of the rotor with respect to a rotation direction of the rotor; It is characterized by having.

Here, the term "non-radial direction of the rotor" means all directions other than the radial direction of the rotor. From the viewpoint of improving the flowability of the viscous fluid before and after the rotor accompanying the rotation of the rotor, it is preferable to use the non-radial direction. It is preferable that the direction be close to the rotational tangent direction of the rotor or the circumferential direction of the rotor (the same applies to claims 5, 9 and 15). The front inclined communication hole, which extends obliquely to the front end face side of the rotor with respect to the rotation direction of the rotor, has an end on the rotation direction side of the rotor opened at the front end face of the rotor, and the rotation direction of the rotor. Is open at the rear end face of the rotor. Therefore, in this viscous heater, when the rotor is rotated, the viscous fluid on the front side of the rotor is taken into the opening end of the front inclined communication hole on the rotation direction side of the rotor, and the rotor of the front inclined communication hole is rotated. It is discharged to the rear side of the rotor from the opening end opposite to the rotation direction.
The viscous fluid discharged from the front inclined communication hole to the rear side of the rotor is sent out to the front side of the rotor via a gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber. Due to the forced flow of the viscous fluid due to the presence of the front inclined communication hole, the circulation of the viscous fluid in the heat generating chamber is improved. Therefore, the viscous fluid present in the heat generating chamber is uniformly sheared, so that the deterioration of the viscous fluid can be delayed.

Further, since the viscous fluid flows before and after the rotor through the front inclined communication hole, the pressure distribution of the viscous fluid on both the front and rear sides of the rotor is made uniform. For this reason, when the rotor is spline-fitted to the drive shaft so as to be relatively non-rotatable and axially displaceable, the rotor can be held at the neutral position in the axial direction in the heating chamber, and the rotor can be moved in the axial direction. It is possible to effectively avoid interference with the wall surface of the heat generating chamber due to the uneven distribution, and reduction in the amount of generated heat due to uneven distribution of the viscous fluid.

(2) The viscous heater according to claim 2 is
2. The viscous heater according to claim 1, wherein the front inclined communication hole extends in parallel with a rotation tangent direction of the rotor. In this viscous heater, the front inclined communication hole extends in parallel to the rotation tangent direction of the rotor, so that viscous fluid on the front side of the rotor is taken into the opening end of the front inclined communication hole on the rotor rotation direction side. And the front inclined communication hole is easily ejected to the rear side of the rotor from the opening end opposite to the rotating direction of the rotor, and as a result, from the front side to the rear side of the rotor through the front inclined communication hole. Of the viscous fluid is improved. Therefore, the circulation of the viscous fluid in the heat generating chamber is further improved.

(3) The viscous heater according to claim 3 is
3. The viscous heater according to claim 1, wherein a plurality of front inclined communication holes are provided, and the front inclined communication holes are arranged at equal intervals in a circumferential direction of the rotor. In this viscous heater, the flowability of the viscous fluid from the front side to the rear side of the rotor can be more effectively improved through the plurality of front inclined communication holes arranged at equal intervals in the circumferential direction of the rotor. .

(4) The viscous heater according to claim 4 is
The viscous heater according to claim 1, 2 or 3, wherein
The inclined communication hole is formed in the inner peripheral area of the rotor.
Features. Note that the above-mentioned inner peripheral area is defined as the radius of the rotor being r.
₀And r from the center of the rotor ₀Within the range of / 2
(Claims 8, 12, and 18 also refer to
Similar).

In this viscous heater, on the front side of the rotor, the viscous fluid collected in the inner peripheral area of the heat generating chamber by the Weissenberg effect and the movement of gas flows through the front inclined communication hole formed in the inner peripheral area of the rotor. At the rear side of the rotor, the viscous fluid is sent from the inner peripheral area to the outer peripheral area of the heat generating chamber at the rear side of the rotor, and the rotor is inserted through the gap between the outer peripheral side face of the rotor and the inner peripheral wall face of the heat generating chamber. The viscous fluid can be sent from the rear side to the front side. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral region to the outer peripheral region of the heat generating chamber, and it is possible to more effectively delay the deterioration of the viscous fluid.

(5) The viscous heater according to claim 5 is
A housing that forms a heat generating chamber and a heat radiating chamber that circulates a circulating fluid adjacent to the heat generating chamber, a drive shaft rotatably supported by the housing via a bearing device, and the drive in the heat generating chamber. A rotor rotatably provided by a shaft and forming a liquid-tight gap between the wall and the wall of the heat generating chamber;
A viscous fluid sealed in the heating chamber and having a viscous fluid that is generated by rotation of the rotor through the liquid-tight gap, wherein the rotor is penetrated in the front-rear direction in the axial direction; And a rear inclined communication hole formed so as to extend to the rear end face side of the rotor with respect to the rotation direction of the rotor.

The rear inclined communication hole, which is inclined toward the rear end face of the rotor with respect to the rotation direction of the rotor, has an end on the rotation direction side of the rotor opened at the rear end face of the rotor. The end on the opposite side of the rotation direction opens to the front end face of the rotor.
For this reason, in this viscous heater, when the rotor is rotated, the viscous fluid on the rear side of the rotor is taken into the opening end of the rear inclined communication hole on the rotation direction side of the rotor, and the rotor of the rear inclined communication hole is rotated. Is discharged to the front side of the rotor from the opening end opposite to the rotation direction. The viscous fluid discharged from the rear inclined communication hole to the front side of the rotor is sent out to the rear side of the rotor via a gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber. Due to the forced flow of the viscous fluid due to the presence of the rear inclined communication hole, the circulation of the viscous fluid in the heat generating chamber is improved. Therefore, the viscous fluid present in the heat generating chamber is uniformly sheared, so that the deterioration of the viscous fluid can be delayed.

Further, since the viscous fluid flows through the rear inclined communication hole before and after the rotor, the pressure distribution of the viscous fluid on both the front and rear sides of the rotor is made uniform. For this reason, when the rotor is spline-fitted to the drive shaft so as to be relatively non-rotatable and axially displaceable, the rotor can be held at the neutral position in the axial direction in the heating chamber, and the rotor can be moved in the axial direction. It is possible to effectively avoid interference with the wall surface of the heat generating chamber due to the uneven distribution, and reduction in the amount of generated heat due to uneven distribution of the viscous fluid.

(6) The viscous heater according to claim 6 is
In the viscous heater according to the fifth aspect, the rear inclined communication hole extends in parallel with a rotation tangent direction of the rotor. In this viscous heater, the rear inclined communication hole extends in parallel to the rotation tangent direction of the rotor, so that the viscous fluid on the rear side of the rotor flows into the opening end of the rear inclined communication hole on the rotor rotation direction side. In addition to being easily taken in, the rear inclined communication hole is easily discharged to the front side of the rotor from the opening end opposite to the rotating direction of the rotor, and as a result, from the rear side of the rotor through the rear inclined communication hole to the front side. Of the viscous fluid is improved. Therefore, the circulation of the viscous fluid in the heat generating chamber is further improved.

(7) The viscous heater according to claim 7 is:
The viscous heater according to claim 5, wherein a plurality of rear inclined communication holes are provided, and each of the rear inclined communication holes is arranged at equal intervals in a circumferential direction of the rotor. In this viscous heater, the flowability of the viscous fluid from the rear side to the front side of the rotor can be more effectively improved through the plurality of rear inclined communication holes arranged at equal intervals in the circumferential direction of the rotor. .

(8) The viscous heater according to claim 8,
8. The viscous heater according to claim 5, wherein the rear inclined communication hole is formed in an inner peripheral area of the rotor. In this viscous heater, on the rear side of the rotor, the viscous fluid collected in the inner peripheral area of the heat generating chamber by the Weissenberg effect and the movement of gas is passed through the rear inclined communication hole formed in the inner peripheral area of the rotor, and the rotor is rotated. From the rear side to the front side, and at the front side of the rotor, while sending viscous fluid from the inner peripheral area of the heat generating chamber to the outer peripheral area, from the front side of the rotor through the gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber Viscous fluid can be sent to the rear side. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral region to the outer peripheral region of the heat generating chamber, and it is possible to more effectively delay the deterioration of the viscous fluid.

(9) The viscous heater according to the ninth aspect,
A housing that forms a heat generating chamber and a heat radiating chamber that circulates a circulating fluid adjacent to the heat generating chamber, a drive shaft rotatably supported by the housing via a bearing device, and the drive in the heat generating chamber. A rotor rotatably provided by a shaft and forming a liquid-tight gap between the wall and the wall of the heat generating chamber;
A viscous heater sealed in the heat generating chamber and having a viscous fluid interposed in the liquid-tight gap and heated by the rotation of the rotor, wherein the rotor is penetrated in the front-rear direction in the axial direction; A liquid-tight gap has a through-hole formed so as to be enlarged and changeable, and at least one of the front and rear end faces of the rotor is at least one of a rotation direction side and a reverse side of the rotor of the through-hole. By having a front inclined surface formed by beveling the edge, the extending surface extends in a non-radial direction of the rotor and is inclined toward the front end surface side of the rotor with respect to the rotation direction of the rotor. A viscous heater.

Here, the liquid-tight gap means a space for applying a shearing force to a viscous fluid capable of securing sufficient heat generation by rotation of the rotor. The front inclined surface may be formed on at least one of the front and rear end surfaces of the rotor.From the viewpoint of improving the flowability of the viscous fluid from the front side to the rear side of the rotor with the rotation of the rotor, Is preferably formed on both front and rear end surfaces. When the front inclined surface is formed on the front end surface of the rotor, the front inclined surface can be formed by chamfering the edge of the through hole on the rotating direction side of the rotor, while the front inclined surface is formed on the rear end surface of the rotor. When it is formed, it can be formed by chamfering the edge of the through hole on the side opposite to the rotating direction of the rotor.

In the case where the front inclined surface is formed on the front end surface of the rotor, the viscous fluid on the front side of the rotor is easily guided by the front inclined surface and taken into the through hole as the rotor rotates. The viscous fluid flows from the front side to the rear side of the rotor via the front inclined surface and the through hole. On the other hand, when the front inclined surface is formed on the rear end surface of the rotor, the viscous fluid present in the through hole is guided by the front inclined surface and flows out to the rear side of the rotor with the rotation of the rotor. Therefore, a viscous fluid flows from the front side to the rear side of the rotor via the front inclined surface and the through hole. When the front inclined surface is formed on both the front and rear end surfaces of the rotor, the effect of the front inclined surface on both the front end surface side and the rear end surface side allows the front inclined surface and the front side of the rotor to pass through the through hole. The flow of the viscous fluid to the rear side is significantly generated. The viscous fluid flowing from the through hole to the rear side of the rotor is sent to the front side of the rotor via a gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber. Due to the forced flow of the viscous fluid due to the presence of the through hole and the front inclined surface, the circulation of the viscous fluid in the heat generating chamber is improved. Therefore, the viscous fluid present in the heating chamber is sheared evenly,
It is possible to delay the deterioration of the viscous fluid.

In this viscous heater, the liquid-tight gap between the outer surface of the rotor and the wall surface of the heat generating chamber greatly changes due to the rotation of the rotor due to the presence of the through hole. The restraining action is promoted. By this operation, the driven rotation of the viscous fluid accompanying the rotation of the rotor is regulated, and the shear force of the viscous fluid is improved.

Further, since gas (or air bubbles) mixed in the viscous fluid is collected in the through hole, a liquid-tight gap between the outer surface of the rotor and the wall surface of the housing (other than the through hole and the above-mentioned inclined surface). Liquid-tight gap), that is, almost no gas is present in the heat generation effective area. For this reason, it becomes possible to more efficiently apply a shear force to the viscous fluid.

Therefore, the amount of heat generated by the viscous fluid can be effectively improved by improving the shear force of the viscous fluid. In addition, since the viscous fluid flows before and after the rotor through the through hole, the pressure distribution of the viscous fluid on both the front and rear sides of the rotor is uniform. For this reason, when the rotor is spline-fitted to the drive shaft so as to be relatively non-rotatable and axially displaceable, the rotor can be held at the neutral position in the axial direction in the heating chamber, and the rotor can be moved in the axial direction. It is possible to effectively avoid interference with the wall surface of the heat generating chamber due to the uneven distribution, and reduction in the amount of generated heat due to uneven distribution of the viscous fluid.

(10) The viscous heater according to the tenth aspect is characterized in that, in the viscous heater according to the ninth aspect, the front inclined surface extends in parallel to the direction of the rotational tangent of the rotor. In this viscous heater, the front inclined surface extends in parallel to the rotation tangent direction of the rotor. Therefore, when the front inclined surface is formed on the front end surface of the rotor, the front inclined surface of the rotor is rotated with the rotation of the rotor. The viscous fluid is easily taken into the front inclined surface, and when the front inclined surface is formed on the rear end surface of the rotor, the viscous fluid in the through hole easily flows out to the rear side of the rotor with the rotation of the rotor. . Therefore, the flowability of the viscous fluid from the front side to the rear side of the rotor through the through hole and the front inclined surface is improved, and the circulation of the viscous fluid in the heat generating chamber is further improved.

(11) The viscous heater according to claim 11 is the viscous heater according to claim 9 or 10,
A plurality of through holes and front inclined surfaces are provided, and each through hole and each front inclined surface are arranged at equal intervals in the circumferential direction of the rotor. In this viscous heater, the flowability of the viscous fluid from the front side to the rear side of the rotor is more effectively improved through the plurality of through holes and the front inclined surface arranged at equal intervals in the circumferential direction of the rotor. Can be.

(12) The viscous heater according to the twelfth aspect is characterized in that, in the viscous heater according to the ninth, tenth or eleventh aspect, the through hole and the front inclined surface are formed in the inner peripheral area of the rotor. I do. In this viscous heater,
On the front side of the rotor, the viscous fluid collected in the inner peripheral area of the heat generating chamber by the Weissenberg effect and the movement of gas is passed from the front side to the rear side of the rotor through a through hole and a front inclined surface formed in the inner peripheral area of the rotor. And the viscous fluid from the inner peripheral region of the heat generating chamber to the outer peripheral region at the rear side of the rotor, and from the rear side of the rotor to the front side through the gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber. Viscous fluid can be delivered. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral region to the outer peripheral region of the heat generating chamber, and it is possible to more effectively delay the deterioration of the viscous fluid.

(13) The viscous heater according to claim 13,
Is a viscous heater according to claim 9, 10 or 11.
The through hole and the front inclined surface are formed in the outer peripheral area of the rotor.
It is characterized by having been done. In addition, the above-mentioned outer peripheral area is
The radius of the data₀And r from the center of the rotor ₀/
It means a range separated by 2 or more.
Mr).

When the outer peripheral region and the inner peripheral region of the rotor are compared, the outer peripheral region has a larger orbiting speed because the distance from the axis is larger. For this reason, the outer peripheral region contributes more to the generation of friction torque due to the shearing of the viscous fluid than the inner peripheral region of the rotor. Therefore, by providing the through-holes in the outer peripheral region of the rotor, the friction torque generated by the shearing of the viscous fluid, and hence the calorific value of the viscous fluid, can be more effectively increased.

Further, gas is inevitably left in the heating chamber. For this reason, if the viscous heater is left in a stopped state, the viscous fluid stays in the lower part of the heat generating chamber due to its own weight, and gas exists in the upper part of the heat generating chamber. In particular, in a viscous heater of a type having a storage chamber or a control chamber that communicates with the heat generation chamber, the amount of the viscous fluid in the heat generation chamber is smaller than the total volume of the viscous fluid in the storage chamber or the control chamber. Since the viscous fluid is contained in these chambers, more gas is present in the upper part of the heat generation chamber in the stopped state. When the viscous heater is started while the viscous fluid stays in the lower part of the heat generating chamber, the viscous fluid is heated only by utilizing the frictional resistance with the front and rear end surfaces of the rotor accompanying the rotation of the rotor. It takes time to spread the entire effective area (the entire circumference of the rotor), and there is a problem that the rise of the viscous heater is delayed.

In this respect, in this viscous heater, since the through-hole is provided in the outer peripheral region of the rotor, the through-hole can have an oil scavenging effect seen in a gear pump or the like. That is, when the viscous heater is stopped and left, a part of the through hole provided in the outer peripheral area of the rotor is immersed in the viscous fluid that is retained in the lower part of the heat generating chamber, and the rotor rotates after the viscous heater is driven. Accordingly, the viscous fluid can be held in the through hole immersed in the viscous fluid and lifted to the upper part of the heat generating chamber. For this reason, after the viscous heater is started, it becomes possible to quickly spread the viscous fluid remaining in the lower part of the heat generation chamber to the entire heat generation effective area. In particular, since the through holes are provided in the outer peripheral region of the rotor, the viscous fluid can be quickly spread over the entire outer peripheral region of the rotor, which greatly contributes to the generation of friction torque due to the shearing of the viscous fluid.
Therefore, it contributes to the improvement of the rising property of the viscous heater.

(14) The viscous heater according to claim 14 is characterized in that, in the viscous heater according to claim 9, 10, 11, 12, or 13, the through hole has an angular convex corner portion. I do. In the viscous heater, the sharp convex corners effectively promote the restraining action of the molecules of the viscous fluid, and can more effectively apply the shearing force to the viscous fluid. In addition, since the gas once collected in the through hole becomes difficult to escape to the outside, the gas storage capacity of the through hole can be increased.

(15) The viscous heater according to the fifteenth aspect has a housing in which a heat generating chamber and a heat radiation chamber adjacent to the heat generating chamber for circulating a circulating fluid are formed, and the housing is rotated via a bearing device. A drive shaft supported as possible, a rotor rotatably provided by the drive shaft in the heating chamber and forming a liquid-tight gap between the wall of the heating chamber, and a rotor sealed in the heating chamber; In a viscous heater having a viscous fluid that is generated by the rotation of the rotor and interposed in the liquid-tight gap, the rotor is penetrated in the front and rear directions in the axial direction, and the liquid-tight gap is enlarged and changed by the rotation of the rotor. In addition to having a through-hole formed so as to be able to be formed, at least one of the front and rear end faces of the rotor has a chamfered edge of at least one of the rotation direction side and the opposite side of the through-hole. Yo Having a rear inclined surface formed so as to extend in a non-radial direction of the rotor and to incline toward a rear end surface side of the rotor with respect to a rotation direction of the rotor. heater.

The rear inclined surface may be formed on at least one of the front and rear end surfaces of the rotor. From the viewpoint of improving the flowability of the viscous fluid from the rear side to the front side of the rotor accompanying the rotation of the rotor, It is preferable to form it on both the front and rear end surfaces of the rotor. When the rear inclined surface is formed on the rear end surface of the rotor, the rear inclined surface can be formed by chamfering the edge of the through hole on the rotation direction side of the rotor, while the rear inclined surface is formed on the front end surface of the rotor. When it is formed, it can be formed by chamfering the edge of the through hole on the side opposite to the rotating direction of the rotor.

When the rear inclined surface is formed on the rear end surface of the rotor, the viscous fluid on the rear side of the rotor is easily guided by the rear inclined surface and taken into the through hole as the rotor rotates. Therefore, a viscous fluid flows from the rear side to the front side of the rotor via the rear inclined surface and the through hole. On the other hand, when the rear inclined surface is formed on the front end surface of the rotor, the viscous fluid present in the through hole is guided by the rear inclined surface and easily flows out to the front side of the rotor with the rotation of the rotor. Therefore, a viscous fluid flows from the rear side to the front side of the rotor via the rear inclined surface and the through hole. When the rear inclined surface is formed on both the front and rear end surfaces of the rotor, the effect of the rear inclined surfaces on both the front end surface side and the rear end surface side causes the rear inclined surface and the rear side of the rotor through the through hole. The flow of the viscous fluid from the front to the front side remarkably occurs. The viscous fluid flowing out of the through hole to the front side of the rotor is sent out to the rear side of the rotor via a gap between the outer peripheral side surface of the rotor and the inner peripheral wall surface of the heat generating chamber. Due to the forced flow of the viscous fluid due to the presence of the through hole and the rear inclined surface, the circulation of the viscous fluid in the heat generating chamber is improved. Therefore, the viscous fluid present in the heating chamber is sheared evenly,
It is possible to delay the deterioration of the viscous fluid.

Further, in this viscous heater, the presence of the through hole allows the viscous heater,
It has the effect of improving the shearing force and increasing the calorific value due to gas storage. (16) The viscous heater according to the sixteenth aspect is the first aspect.
5. The viscous heater according to 5, wherein the rear inclined surface extends in parallel to a rotational tangent direction of the rotor.

In this viscous heater, the rear inclined surface extends parallel to the tangential direction of the rotation of the rotor. Therefore, when the rear inclined surface is formed on the rear end surface of the rotor, the rotor is rotated with the rotation of the rotor. Viscous fluid on the rear side becomes easier to be taken into the rear inclined surface, and when the rear inclined surface is formed on the front end surface of the rotor, the viscous fluid in the through-hole flows out to the front side of the rotor as the rotor rotates. Easier to do. Therefore, the flowability of the viscous fluid from the rear side to the front side of the rotor through the through hole and the rear inclined surface is improved, and the circulation of the viscous fluid in the heat generating chamber is further improved.

(17) In the viscous heater according to the seventeenth aspect, in the viscous heater according to the fifteenth or sixteenth aspect, a plurality of through holes and rear inclined surfaces are provided, and each through hole and each rear inclined surface are formed in a circumferential direction of the rotor. Are arranged at equal intervals. In this viscous heater, the flowability of the viscous fluid from the rear side to the front side of the rotor is more effectively improved through the plurality of through holes and the rear inclined surface arranged at equal intervals in the circumferential direction of the rotor. Can be.

(18) The viscous heater according to the eighteenth aspect is characterized in that, in the viscous heater according to the fifteenth, sixteenth or seventeenth aspect, the through hole and the rear inclined surface are formed in an inner peripheral area of the rotor. I do. In this viscous heater, on the rear side of the rotor, the viscous fluid collected in the inner peripheral area of the heat generating chamber by the Weissenberg effect and the movement of gas passes through a through-hole formed in the inner peripheral area of the rotor and a rear inclined surface. At the front side of the rotor, the viscous fluid is sent from the inner peripheral area to the outer peripheral area of the heat generating chamber, and the rotor is fed through the gap between the outer peripheral side face of the rotor and the inner peripheral wall face of the heat generating chamber. Viscous fluid can be sent from the front side to the rear side. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral region to the outer peripheral region of the heat generating chamber, and it is possible to more effectively delay the deterioration of the viscous fluid.

(19) The viscous heater according to the nineteenth aspect is characterized in that, in the viscous heater according to the fifteenth, sixteenth, or seventeenth aspect, the through hole and the rear inclined surface are formed in an outer peripheral region of the rotor. . This viscous heater is
Since the through hole and the rear inclined surface are formed in the outer peripheral region of the rotor, similar to the viscous heater according to claim 13,
It has the effect of increasing the calorific value by improving the shearing force, and improving the rising property by the oil frying effect.

(20) The viscous heater according to the twentieth aspect is characterized in that, in the viscous heater according to the fifteenth, fifteenth, sixteenth, eighteenth, or nineteenth aspect, the through hole has a sharp convex corner. I do. In this viscous heater, due to the sharp convex corners, the effect of improving the shearing force of the viscous fluid and improving the gas storage capacity can be obtained as in the viscous heater according to the fourteenth aspect.

(21) The viscous heater according to the twenty-first aspect provides the viscous heater according to the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and ninth aspects.
0, 11, 12, 13, 14, 15, 16, 17, 1
In the viscous heater described in 8, 19, or 20, the housing is provided with a storage chamber that is in communication with the heat generation chamber by the recovery passage and the supply passage and that can store a viscous fluid that exceeds the storage volume of the viscous fluid in the heat generation chamber. It is characterized by having.

In this viscous heater, since the storage chamber can store a viscous fluid exceeding the storage volume of the viscous fluid in the heat generating chamber, it is not necessary to strictly control the storage amount of the viscous fluid. When the recovery passage is communicated with the central area of the heat generating chamber, the viscous fluid collected in the central area of the heat generating chamber by the Weissenberg effect and the movement of gas flows from the heat generating chamber to the storage chamber through the recovery path. In addition to being able to be quickly recovered, the viscous fluid can be supplied from the storage chamber to the heating chamber by the supply passage. Thus, in this viscous heater, the viscous fluid is exchanged between the heating chamber and the storage chamber, and the viscous fluid circulates between the heating chamber and the storage chamber to delay the deterioration of the viscous fluid and exhibit a sufficient heat generation amount. Therefore, it is possible to secure the necessary amount of the viscous fluid to be stored, and to prevent the shaft sealing ability of the shaft sealing device from being reduced due to an increase in the internal pressure due to an increase in the viscous fluid storage ratio.

Further, in this viscous heater, since the viscous fluid exceeding the storage volume of the viscous fluid in the heat generating chamber can be stored in the storage chamber, the amount of the viscous fluid to be sheared has a margin, and only the specific viscous fluid is allowed to flow. Is not always sheared, and this also makes it possible to delay the deterioration of the viscous fluid. Further, in this viscous heater, a front or rear inclined communication hole, or a through hole and a front or rear inclined surface are provided in the rotor, so that the flowability of the viscous fluid before and after the rotor is improved, and the viscous fluid in the heating chamber is improved. The circulation is improving. For this reason, the circulation of the viscous fluid in the entire heat generating chamber and the storage chamber is also improved, and the delay in the deterioration of the viscous fluid can be extremely effectively achieved.

Further, when a rear inclined surface is formed on the rear end surface of the rotor, the cross-sectional area between the rear wall surface of the heat generating chamber and the rear inclined surface changes smoothly due to the existence of the rear inclined surface. The smooth change of the cross-sectional area of the flow path of the viscous fluid facilitates the flow of the viscous fluid from the storage chamber to the heat generation chamber via the supply passage. For this reason, the circulation property of the viscous fluid between the storage chamber and the heat generating chamber can be improved, and the delay in the deterioration of the viscous fluid can be more effectively achieved.

Further, in this viscous heater, since a large amount of gas is present in the upper part of the heat generating chamber in the stopped state, the oil scooping effect by the through holes provided in the outer peripheral regions of the front and rear end surfaces of the rotor is provided. Is more involved. In this viscous heater, since a large amount of gas is present in the upper part of the heat generating chamber when the heater is stopped, the viscous heater is provided not only in the through-holes provided in the outer peripheral areas of the front and rear end faces of the rotor but also in the inner peripheral area. The through hole can also exert an oil frying effect.

[0047]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the invention described in each claim will be described below with reference to the drawings. (Embodiment 1) In this viscous heater, as shown in FIG.
The front plate 2, the rear plate 3, and the rear housing body 4 are laminated via gaskets 5, 6 between the front housing body 1 and the front plate 2 and between the rear plate 3 and the rear housing body 4, respectively. In this state, it is fastened by a plurality of through bolts 7. Here, the front housing body 1 and the front plate 2 constitute a front housing, and the rear plate 3 and the rear housing body 4 constitute a rear housing. The recess 2a having a flat bottom at the rear end face of the front plate 2 forms a heat generating chamber 8 having a circular cross section held in a closed state together with the flat front end face 3a of the rear plate 3. .

The inner surface of the front housing body 1 and the front end surface of the front plate 2 form a front water jacket FW as a front heat radiating chamber adjacent to the front of the heat generating chamber 8.
The rear end face of the rear plate 3 and the inner surface of the rear housing body 4 form a rear water jacket RW as a rear heat radiating chamber adjacent to the rear of the heat generating chamber 8. A water inlet port 9 and a water outlet port (not shown) are formed adjacent to an outer region of the rear surface of the rear housing body 4, and the water inlet port 9 and the water outlet port communicate with the rear water jacket RW. In the rear plate 3 and the front plate 2, water passages 10 as a plurality of fluid passages are provided at equal intervals between the through bolts 7, and the front water jacket FW and the rear water jacket RW are connected by the water passage 10. ing.

A shaft sealing device 12 is provided in the boss 2b of the front plate 2 adjacent to the heat generating chamber 8, and a bearing device 13 is provided in the boss 1a of the front housing body 1. A drive shaft 14 is rotatably supported via the shaft sealing device 12 and the bearing device 13, and a rear end of the drive shaft 14 is disposed at a rear end of the drive shaft 14 from an axial center of the drive shaft 14 by an axial length as shown in FIG. 2. Flat disk-shaped rotor 15 having front and rear end faces with a long radius
Are fitted by press fitting, and the rotor 15 is rotatable in the heat generating chamber 8. The heating chamber 8 is filled with silicone oil as a viscous fluid, and the silicone oil is interposed in the liquid-tight gap. A pulley (not shown) or an electromagnetic clutch (not shown) is provided at the tip of the drive shaft 14, and is rotated by a belt by an engine of the vehicle. Note that the outer diameter of the rotor 15 is slightly smaller than the inner diameter of the heat generating chamber 8. The clearance CL of the liquid-tight gap between the front and rear end surfaces 15a and 15b of the rotor 15 and the front and rear wall surfaces of the heat generating chamber 8 is 0.1.
003 × r ₀ . Here, r ₀ is the rotor 15
Is the radius of

In this viscous heater, as shown in FIGS. 2 and 3, four front inclined communication holes 16 are provided in the inner peripheral region of the rotor 15 at equal intervals in the circumferential direction and from the center of the rotor 15. It is formed at a position spaced apart by an equal distance in the radial direction. Each front inclined communication hole 16 has a radius of the rotor r _0.
In this case, it is disposed at a position 0.33 × r ₀ away from the center. Each front inclined communication hole 16 is penetrated in the axial direction of the rotor 15, extends linearly in the tangential direction of rotation of the rotor 15, and rotates in the direction of rotation of the rotor 15 (in the direction of the arrow P shown in FIGS. 2 and 3). ) With respect to the front end face 15 of the rotor 15.
It is formed so as to extend obliquely to the a side.

In the inner peripheral region of the rotor 15 where the front inclined communication hole 16 is formed, the front end face 1 of the rotor 15
A large gap exists between 5a and the shaft sealing device 12, and this gap is not included in the liquid-tight gap. In this viscous heater, a storage chamber SR is formed in the center area of the rear housing body 4. The rear plate 3 has a collection hole 3j as a collection passage at a position above the central area.
Is pierced. A supply hole 3k is provided in the rear plate 3 at a position below the central area.
Supply groove 3m extending from the lower end of the heating chamber 8 to the lower outside area of the heating chamber 8
Is provided. A supply passage is formed by the supply hole 3k and the supply groove 3m. The supply passage has a flow path cross-sectional area larger than that of the recovery hole 3j so that silicone oil as a viscous fluid can be easily supplied to the heat generating chamber 8. I have. Further, the supply groove 3m is preferably formed to be longer than a position corresponding to the rotor 15.

In this viscous heater incorporated in the heating device of the vehicle, when the drive shaft 14 is driven by an engine via a pulley or the like, the rotor 15 rotates in the heat generating chamber 8, so that silicone oil is generated in the heat generating chamber. 8 wall and rotor 1
5 generates heat by shearing in a liquid-tight gap with the outer surface. This heat is exchanged with the circulating water in the rear water jacket RW, and the heated circulating water is used for heating the vehicle in the heating circuit.

In this viscous heater, the front inclined communication hole 16 formed in the inner peripheral area of the rotor 15 has an end on the rotation direction side of the rotor 15 opened at the front end face 15a of the rotor 15, and The end opposite to the rotating direction of the rotor 1
5 is open to the rear end face 15b. For this reason, in the viscous heater, when the rotor 15 is rotated, the viscous fluid on the front side of the rotor 15 is turned by the viscous fluid on the front inclined communication hole 16 as shown by the arrow Q in FIG. It is taken into the opening end on the moving direction side, and is discharged to the rear side of the rotor 15 from the opening end of the front inclined communication hole 16 on the side opposite to the rotating direction of the rotor 15. Then, the rotor 1 is inserted through the front inclined communication hole 16.
The viscous fluid discharged to the rear side of the rotor 5 is sent to the front side of the rotor 15 through a gap between the outer peripheral side surface of the rotor 15 and the inner peripheral wall surface of the heat generating chamber 8. Such a front inclined communication hole 1
Due to the forced flow of viscous fluid due to the presence of 6,
The circulation of the viscous fluid in the heat generating chamber 8 is improved. In particular, in this viscous heater, since the front inclined communication hole 16 extends in parallel to the rotation tangential direction of the rotor 15, the viscous fluid on the front side of the rotor 15 moves in the rotation direction of the rotor 15 of the front inclined communication hole 16. Of the front inclined communication hole 16 and the rear end of the rotor 15 from the opening end of the front inclined communication hole 16 on the side opposite to the rotation direction of the rotor 15, so that the front inclined communication hole 16 16 are provided, and the front inclined communication holes 16 are arranged at equal intervals in the circumferential direction of the rotor, so that the flowability of the viscous fluid from the front side to the rear side of the rotor 15 is more effectively improved. be able to.

Further, in this viscous heater, the front inclined communication hole 16 is formed in the inner peripheral area of the rotor 15, so that the Weissenberg effect and the movement of gas cause the inner peripheral area of the heat generating chamber 8 to be located in front of the rotor 15. The viscous fluid collected at the rotor 15 is sent from the front side to the rear side of the rotor 15 through the front inclined communication hole 16 formed in the inner peripheral area of the rotor 15, and at the rear side of the rotor 15, Viscous fluid from the region to the outer peripheral region, and the rotor 15 through the gap between the outer peripheral side surface of the rotor 15 and the inner peripheral wall surface of the heat generating chamber.
The viscous fluid can be sent from the rear side to the front side. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral area to the outer peripheral area of the heat generating chamber 8.

Therefore, in this viscous heater, the circulation of the viscous fluid in the heat generating chamber 8 is extremely effectively improved, so that the viscous fluid existing in the heat generating chamber can be evenly sheared, and Deterioration delay can be achieved. Further, in this viscous heater, the central area of the heat generating chamber 8 and the storage chamber SR are communicated with each other through the recovery hole 3j on the rear side of the rotor 15, so that the central area of the heat generating chamber is caused by the Weissenberg effect and the movement of gas. The viscous fluid collected in the storage chamber SR can be quickly recovered from the heating chamber 8 into the storage chamber SR through the recovery hole 3j, and the viscous fluid can be supplied from the storage chamber SR to the heating chamber 8 through the supply hole 3k. is there. In this way, in this viscous heater, the viscous fluid is exchanged between the heat generating chamber 8 and the storage chamber SR to sufficiently delay the deterioration of the viscous fluid due to the circulation of the viscous fluid between the heat generating chamber 8 and the storage chamber SR. It is possible to secure the amount of viscous fluid that is necessary to exhibit the amount, and to prevent the shaft sealing ability of the shaft sealing device 12 from being reduced due to an increase in the internal pressure due to an increase in the viscous fluid storage ratio.

Further, in this viscous heater, since the viscous fluid exceeding the storage volume in the heat generating chamber 8 can be stored in the storage chamber SR, the amount of the viscous fluid to be sheared has a margin, and a specific viscous fluid is generated. Since only the shearing of the viscous fluid is not always performed, it is possible to delay the deterioration of the viscous fluid. Further, since the viscous fluid flows through the front inclined communication hole 16 before and after the rotor 15, the pressure distribution of the viscous fluid on both the front and rear sides of the rotor 15 is made uniform. For this reason, when the rotor 15 is spline-fitted to the drive shaft 14 so as to be relatively non-rotatable and axially displaceable, the rotor 15 can be held at the neutral position in the axial direction in the heat generating chamber 8. In addition, it is possible to effectively avoid interference of the rotor 15 with the wall surface of the heat generating chamber 8 when the rotor 15 is biased in the axial direction, and reduction in the amount of generated heat due to uneven distribution of the viscous fluid.

(Embodiment 2) The viscous heater of this embodiment is the same as Embodiment 1 except that the front inclined communication hole 16 is changed to the rear inclined communication hole 17 as shown in FIGS. It is. That is, after this, the inclined communication hole 17 is
It penetrates back and forth in the axial direction of the rotor 15, extends linearly in the tangential direction of rotation of the rotor 15, and moves the rotor 15 in the direction of rotation of the rotor 15 (the direction of the arrow P shown in FIGS. It is formed so as to extend obliquely to the rear end face 15b side.

In this viscous heater, the rear inclined communication hole 17 formed in the inner peripheral area of the rotor 15 has an end on the rotation direction side of the rotor 15 opened at the rear end face 15 b of the rotor 15.
An end of the rotor 15 on the opposite side in the rotation direction is open to the front end face 15 a of the rotor 15. Therefore, in this viscous heater, when the rotor 15 is rotated, the viscous fluid on the rear side of the rotor 15 flows through the rear inclined communication hole 17 as shown by the arrow Q in FIG. It is taken into the opening end on the rotation direction side and is discharged to the front side of the rotor 15 from the opening end of the rear inclined communication hole 17 on the side opposite to the rotation direction of the rotor 15. The viscous fluid discharged from the rear inclined communication hole 17 to the front side of the rotor 15 is sent out to the front side of the rotor 15 via a gap between the outer peripheral side surface of the rotor 15 and the inner peripheral wall surface of the heat generating chamber 8. Due to the occurrence of the forced flow of the viscous fluid due to the existence of the rear inclined communication hole 17, the circulation of the viscous fluid in the heat generating chamber 8 is improved.

Further, in this viscous heater, the rear inclined communication hole 17 is formed in the inner peripheral area of the rotor 15, so that the inner periphery of the heat generating chamber 8 is formed on the rear side of the rotor 15 by the Weissenberg effect and the movement of gas. The viscous fluid collected in the region is sent out from the rear side of the rotor 15 to the front side through the rear inclined communication hole 17 formed in the inner peripheral region of the rotor 15, and at the front side of the rotor 15, Viscous fluid from the region to the outer peripheral region, and the rotor 15 through the gap between the outer peripheral side surface of the rotor 15 and the inner peripheral wall surface of the heat generating chamber.
Viscous fluid can be sent from the front side to the rear side. For this reason, it is possible to circulate the viscous fluid entirely from the inner peripheral area to the outer peripheral area of the heat generating chamber 8.

Therefore, in this viscous heater, the circulation of the viscous fluid in the heat generating chamber 8 is extremely effectively improved, so that the viscous fluid existing in the heat generating chamber can be uniformly sheared, and Deterioration delay can be achieved. The other operation and effect are the same as those of the first embodiment. (Embodiment 3) The viscous heater of this embodiment is the same as that of the above embodiment except that both the front inclined communication hole 16 and the rear inclined communication hole 17 are provided in the inner peripheral area of the rotor 15 as shown in FIG. Same as 1. That is, in the rotor 15, two of the four communication holes that are continuous in the circumferential direction are the front inclined communication holes 16, and the other two of the two communication holes that are continuous in the circumferential direction.
The communication holes are rear inclined communication holes 17.

In this viscous heater, the viscous fluid flows from the front side to the rear side of the rotor 15 through the front inclined communication hole 16 in the inner peripheral area of the rotor 15, and the rear side of the rotor 15 passes through the rear inclined communication hole 17. Since the viscous fluid flows from the front to the front side, the circulation of the viscous fluid before and after the rotor 15 is improved. (Embodiment 4) As shown in FIGS. 7 to 10, the viscous heater of this embodiment has a through hole and an inclined surface formed in the rotor instead of the inclined communication hole. Same as 1.

That is, in this viscous heater, four outer peripheral circular holes (through holes) 19 are provided in the outer peripheral region of the rotor 15 at equal intervals in the circumferential direction and at equal distances from the center of the rotor 15 in the radial direction. In addition, four inner circumferential holes (through holes) 20 are also formed in the inner circumferential area of the rotor 15 at equal intervals in the circumferential direction. The outer peripheral circular hole 19 and the inner peripheral circular hole 20 penetrate in the axial direction of the rotor 15, and constitute a through hole that enlarges and changes the liquid-tight gap by the rotation of the rotor 15.

The outer peripheral circular hole 19 defines the radius of the rotor 15 as r.
_{When set to 0} , the center is 0.86 × from the center of the rotor 15.
It is located at a distance of r ₀ and has a radius of 0.09 × r ₀ .
On the other hand, the inner peripheral circular hole 20 has a radius
_{When 0} is set, the center is 0.33 × from the center of the rotor 15.
It is located at a distance of r ₀ and has a radius of 0.06 × r ₀ . Further, the outer circular hole 19 and the inner circular hole 20 are not chamfered at both corners, and are convex corners 19a and 20a.
a.

As shown in FIGS. 7 and 9, the front end face 15a of the rotor 15 is
By chamfering the edge in the rotation direction of the rotor 5 (in the direction of the arrow P in FIGS. 7 and 9), it extends in the circumferential direction of the rotor 15 and the front end face of the rotor 15 with respect to the rotation direction of the rotor 15. It has a front inclined surface 21a formed so as to extend obliquely to the 15a side. On the other hand, the rear end face 1 of the rotor 15
5b extends in the circumferential direction of the rotor 15 by chamfering the edge of each outer circular hole 19 on the side opposite to the rotation direction of the rotor 15, and the front end face of the rotor 15 with respect to the rotation direction of the rotor 15. It has a front inclined surface 21b formed so as to extend obliquely to the 15a side.

As shown in FIGS. 7 and 10, the front end face 15a of the rotor 15 is
By chamfering the edge opposite to the rotation direction of the rotor 5 (the direction indicated by the arrow P in FIGS. 7 and 10), the rotor 15 extends in the circumferential direction of the rotor 15 and is rotated with respect to the rotation direction of the rotor 15.
The rear inclined surface 22a is formed so as to extend to the rear end surface 15b side. On the other hand, the rear end face 15b of the rotor 15 extends in the circumferential direction of the rotor 15 by chamfering the edge of each inner circumferential circular hole 20 on the rotating direction side of the rotor 15, and extends in the rotating direction of the rotor 15. On the other hand, the rotor 15 has a rear inclined surface 22b formed so as to extend to the rear end surface 15b side of the rotor 15.

In this viscous heater, in the outer peripheral region of the rotor 15, the outer peripheral circular hole 19 penetrates in the front and rear directions in the axial direction, and the front inclined surfaces 21 a and 21 b are formed in the front and rear end surfaces 15 a and 15 b of the rotor 15. Therefore, as shown by the arrow Q in FIG.
With the rotation of the viscous fluid, the viscous fluid on the front side of the rotor 15 is easily guided into the front inclined surface 21a and taken into the outer circular hole 19, and the viscous fluid present in the outer circular hole 19 is moved to the front inclined surface 21b. Since it is easily guided and flows out to the rear side of the rotor 15, viscous fluid flows from the front side to the rear side of the rotor 15 remarkably through the outer peripheral circular hole 19 and the front inclined surfaces 21a and 21b. On the other hand, in the inner peripheral region of the rotor 15,
The inner peripheral circular hole 20 is penetrated in the front and rear directions in the axial direction, and the rear inclined surfaces 22a and 22b are
15b, the viscous fluid flows along with the rotation of the rotor 15, as shown by the arrow Q in FIG.
The viscous fluid on the rear side of the rotor 15 is easily guided by the rear inclined surface 22b and taken into the inner peripheral circular hole 20, and the viscous fluid present in the inner peripheral circular hole 20 is guided by the rear inclined surface 22a. The viscous fluid flows from the rear side of the rotor 15 to the front side through the inner circular hole 20 and the rear inclined surfaces 22a and 22b, so that the viscous fluid easily flows out to the front side of the rotor 15.

Therefore, in this viscous heater, when the rotor 15 is rotated, the rear side of the rotor 15
The viscous fluid collected in the inner peripheral area of the heat generating chamber 8 by the Weissenberg effect and the movement of gas is supplied to the rotor 15 through the inner circular hole 20 formed in the inner peripheral area of the rotor 15 and the rear inclined surfaces 22a and 22b. The viscous fluid sent out from the rear side to the front side and sent out from the inner peripheral area to the outer peripheral area of the heat generating chamber 8 at the front side of the rotor 15 is supplied to the outer peripheral circular hole 19 and the front inclined surface 21 a formed in the outer peripheral area of the rotor 15. , 21b, the viscous fluid can be sent from the front side to the rear side of the rotor 15 through the gap between the outer peripheral side surface of the rotor 15 and the inner peripheral wall surface of the heat generating chamber. For this reason, it becomes possible to circulate the viscous fluid very effectively from the inner peripheral area to the outer peripheral area of the heat generating chamber 8 as a whole. Therefore, the viscous fluid existing in the heat generating chamber 8 can be uniformly sheared, and the delay of the degradation of the viscous fluid can be effectively achieved.

In this viscous heater, the rotor 1
The cross-sectional area between the rear end surface 15b and the rear wall surface of the heating chamber 8 changes smoothly due to the presence of the front inclined surface 21b and the rear inclined surface 22b. The smooth change of the cross-sectional area of the flow path of the viscous fluid facilitates the flow of the viscous fluid from the storage chamber SR to the heat generation chamber 8 via the supply passage. For this reason, the circulation property of the viscous fluid between the storage room SR and the heat generating chamber 8 can be improved, and the delay of the deterioration of the viscous fluid can be more effectively achieved.

Further, in this viscous heater, since the viscous fluid flows before and after the rotor 15 through the outer circular hole 19 and the inner circular hole 20, the pressure distribution of the viscous fluid on both the front and rear sides of the rotor 15 is made uniform. Is done. For this reason,
If the rotor 15 is spline-fitted to the drive shaft 14 so as to be relatively non-rotatable and axially displaceable, the rotor 15
Can be held at a neutral position in the axial direction in the heat generating chamber 8, and when the rotor 15 is biased in the axial direction,
It is possible to effectively avoid interference with the wall surface of the first embodiment and reduction in the amount of heat generated due to uneven distribution of the viscous fluid.

Furthermore, in this viscous heater, the liquid-tight space between the front and rear wall surfaces of the heat generating chamber 8 and the front and rear end surfaces 15a and 15b of the rotor 15 is increased by the presence of the outer circular hole 19 and the inner circular hole 20. , And the liquid-tight gap is greatly enlarged and changed by the rotation of the rotor 15, so that the change promotes the binding action of the molecules in the viscous fluid. By this action, the driven rotation of the viscous fluid accompanying the rotation of the rotor 15 is regulated, and the shear force of the viscous fluid is improved.

In particular, in this viscous heater, an outer peripheral circular hole 1 of a predetermined size is provided in a predetermined range of the outer peripheral region of the rotor 15.
Since the grooves 9 are formed, the shear force can be applied to the viscous fluid very effectively by the outer circumferential hole 19 in the outer circumferential area which greatly contributes to the generation of the friction torque. Further, in this viscous heater, the gas mixed in the viscous fluid is collected in the outer peripheral circular hole 19 and the inner peripheral circular hole 20, so that the outer surface of the rotor 15 which is a heat generation effective region and the front and rear wall surfaces of the heat generation chamber 8 are formed. Between the liquid-tight gaps (circular holes 19,
Most of the gas does not exist in the inner circumferential circle tendency 20 and the gap other than the inclined concave part 21). For this reason, it becomes possible to more efficiently apply a shear force to the viscous fluid.

Furthermore, since the outer peripheral circular hole 19 and the inner peripheral circular hole 20 have angular convex corners 19a and 20a, respectively, these corners are chamfered and rounded. Thus, it becomes possible to effectively promote the binding action of the molecules of the viscous fluid, and it is possible to more effectively apply a shear force to the viscous fluid. Further, since the gas collected in the outer peripheral circular hole 19 or the inner peripheral circular hole 20 is difficult to escape to the outside, the gas storage capacity of the gas is increased, and as described above, it can contribute to the improvement of the shearing force of the viscous fluid.

Although the effective heat generation area is reduced by the presence of the outer circular hole 19, the inner circular hole 20, and the inclined concave portion 21, the shear force is reduced by the above-mentioned restraining action of the viscous fluid molecules. Can be significantly improved, so that the amount of generated heat is efficiently improved. As described above, in the viscous heater, it is possible to further improve the heat generation amount without expanding the heat generation effective area.

Further, in this viscous heater, since the outer peripheral circular hole 19 is provided in the outer peripheral region of the rotor 15, the outer peripheral circular hole 19 can have an oil scooping effect. That is, when the viscous heater is stopped and left, a part of the outer peripheral circular hole 19 provided in the outer peripheral region of the rotor 15 is placed under the heat generating chamber 8 by its own weight due to the presence of gas unavoidably remaining in the heat generating chamber 8. The viscous fluid is immersed in the staying viscous fluid, and after the viscous heater is driven, the outer peripheral circular hole 19 immersed in the viscous fluid holds the viscous fluid in accordance with the rotation of the rotor 15 so that Can be lifted to the part. For this reason, after the viscous heater is started, the viscous fluid stagnating in the lower part of the heat generating chamber 8 can be quickly spread over the entire heat generation effective area, which contributes to the improvement of the startup property of the viscous heater.

In this viscous heater, the storage chamber S
Since a large amount of gas is present above the heat generating chamber 8 in the stopped state due to the provision of R, the effect of the oil pumping effect by the outer peripheral circular hole 19 provided in the outer peripheral region of the rotor 15 is obtained. Is more involved. Also,
In this viscous heater, since a lot of gas is present above the heat generating chamber 8 in the stopped state, not only the outer peripheral circular hole 19 but also the inner peripheral circular hole 20 of the rotor 15
It can exhibit oil frying effect.

In the first to fourth embodiments, the storage room S
The viscous heater in which R is provided in the housing has been described, but a variable capacity type viscous heater in which at least one of the supply passage and the recovery passage can be opened and closed,
Of course, the present invention can be applied to a viscous heater having no auxiliary oil chamber such as a storage chamber. In the first to fourth embodiments, the drive shaft 14 may be intermittently driven using an electromagnetic clutch instead of the pulley.

In the fourth embodiment, the outer circular hole 19 and the inner circular hole 20 are used as the through holes, but the shape of the through holes is not limited to a circle.

[Brief description of the drawings]

FIG. 1 is a sectional view of a viscous heater according to a first embodiment.

FIG. 2 is a plan view of a rotor according to the viscous heater of the first embodiment.

FIG. 3 is a partially enlarged cross-sectional view of a rotor according to the viscous heater of the first embodiment, and is a cross-sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a rotor relating to a viscous heater according to a second embodiment.

FIG. 5 is a partially enlarged cross-sectional view of a rotor according to the viscous heater of the second embodiment, and is a cross-sectional view taken along line BB of FIG.

FIG. 6 is a plan view of a rotor according to a viscous heater of a third embodiment.

FIG. 7 is a plan view of a rotor relating to a viscous heater of a fourth embodiment.

FIG. 8 is a sectional view of a rotor according to a viscous heater of a fourth embodiment.

9 is a partially enlarged cross-sectional view of a rotor related to the viscous heater of Embodiment 4, and is a cross-sectional view taken along line CC of FIG.

FIG. 10 is a partially enlarged cross-sectional view of a rotor relating to the viscous heater of Embodiment 4, and is a cross-sectional view taken along line DD in FIG.

[Explanation of symbols]

8: Heat generation chamber FW: Front heat radiation chamber (front water jacket) RW: Rear heat radiation chamber (rear water jacket) 1, 2, 3, 4 ... Housing (1: front housing body, 2: front plate, 3) ... rear plate, 4 ... rear housing body) 13 ... bearing device 14 ... drive shaft 15 ... rotor 7 ... through bolt 16 ... front inclined communication hole, 17 ... rear inclined communication hole 19 ... outer peripheral circular hole (through hole) 20 ... inside Circumferential holes (through holes) 21a, 21b: front inclined surface 22a, 22b: rear inclined surface 3j: recovery hole (recovery passage) 3k: supply hole (supply passage) SR: storage chamber

Claims (21)

[Claims] A housing for forming a heat-generating chamber and a heat-radiating chamber adjacent to the heat-generating chamber for circulating a circulating fluid; a drive shaft rotatably supported by the housing via a bearing device; A rotor rotatably provided by the drive shaft in the heating chamber and forming a liquid-tight gap with a wall surface of the heating chamber; and a rotor sealed in the heating chamber and interposed in the liquid-tight gap. A viscous heater having a viscous fluid that is heated by rotation of the rotor, wherein the rotor is penetrated in the axial direction, extends in a non-radial direction of the rotor, and has a front end face with respect to the rotation direction of the rotor. A viscous heater characterized by having a front inclined communication hole formed so as to be inclined to the side. 2. The viscous heater according to claim 1, wherein the front inclined communication hole extends in parallel with a tangential direction of rotation of the rotor. 3. The viscous heater according to claim 1, wherein a plurality of front inclined communication holes are provided, and each of the front inclined communication holes is arranged at equal intervals in a circumferential direction of the rotor. 4. The viscous heater according to claim 1, wherein the front inclined communication hole is formed in an inner peripheral area of the rotor. 5. A housing which forms a heat generating chamber and a heat radiating chamber which circulates a circulating fluid adjacent to the heat generating chamber, a drive shaft rotatably supported by the housing via a bearing device, and A rotor rotatably provided by the drive shaft in the heating chamber and forming a liquid-tight gap with a wall surface of the heating chamber; and a rotor sealed in the heating chamber and interposed in the liquid-tight gap. A viscous heater having a viscous fluid that generates heat by rotation of the rotor, wherein the rotor is penetrated in the axial direction, extends in a non-radial direction of the rotor, and has a rear end face with respect to the rotation direction of the rotor. A viscous heater characterized by having a rear inclined communication hole formed so as to extend to the side inclining. 6. The viscous heater according to claim 5, wherein the rear inclined communication hole extends in parallel with a tangential direction of rotation of the rotor. 7. A viscous heater according to claim 5, wherein a plurality of rear inclined communication holes are provided, and each of the rear inclined communication holes is arranged at equal intervals in a circumferential direction of the rotor. 8. The viscous heater according to claim 5, wherein the rear inclined communication hole is formed in an inner peripheral area of the rotor. 9. A housing which internally forms a heat generating chamber and a heat radiating chamber which circulates a circulating fluid adjacent to the heat generating chamber, a drive shaft rotatably supported by the housing via a bearing device, and A rotor rotatably provided by the drive shaft in the heating chamber and forming a liquid-tight gap with a wall surface of the heating chamber; and a rotor sealed in the heating chamber and interposed in the liquid-tight gap. A viscous heater having a viscous fluid that generates heat by rotation of the rotor, wherein the rotor has a through hole that is penetrated in the front-back direction in the axial direction and is formed so as to be able to expand and change a liquid-tight gap by rotation of the rotor. At least one of the front and rear end surfaces of the rotor extends in the non-radial direction of the rotor by chamfering at least one end of the through hole in the rotation direction side and the opposite side of the rotor. With Viscous heater, characterized in that an inclined surface before being formed to extend inclined in the front face side of the rotor relative to the rotating direction of the over data. 10. The viscous heater according to claim 9, wherein the front inclined surface extends in parallel with a tangential direction of rotation of the rotor. 11. The method according to claim 9, wherein a plurality of through holes and front inclined surfaces are provided, and each through hole and each front inclined surface are arranged at equal intervals in a circumferential direction of the rotor. Viscous heater. 12. The viscous heater according to claim 9, wherein the through hole and the front inclined surface are formed in an inner peripheral area of the rotor. 13. The viscous heater according to claim 9, wherein the through hole and the front inclined surface are formed in an outer peripheral region of the rotor. 14. A through-hole having a sharp convex corner portion.
The described viscous heater. 15. A housing defining therein a heat generating chamber and a heat radiating chamber adjacent to the heat generating chamber for circulating a circulating fluid, a drive shaft rotatably supported by the housing through a bearing device, and A rotor rotatably provided by the drive shaft in the heating chamber and forming a liquid-tight gap with a wall surface of the heating chamber; and a rotor sealed in the heating chamber and interposed in the liquid-tight gap. A viscous heater having a viscous fluid that generates heat by rotation of the rotor, wherein the rotor has a through hole that is penetrated in the front-back direction in the axial direction and is formed so as to be able to expand and change a liquid-tight gap by rotation of the rotor. At least one of the front and rear end faces of the rotor extends in the non-radial direction of the rotor by chamfering at least one end of the through hole in the rotation direction side and the opposite side of the rotor. With Viscous heater, characterized in that an inclined surface after being formed to extend inclined in the rear end face side of the rotor relative to the rotating direction of the rotor. 16. The viscous heater according to claim 15, wherein the rear inclined surface extends in parallel with a tangential direction of rotation of the rotor. 17. The method according to claim 15, wherein a plurality of through holes and rear inclined surfaces are provided, and each through hole and each rear inclined surface are arranged at equal intervals in a circumferential direction of the rotor. Viscous heater. 18. The viscous heater according to claim 15, wherein the through hole and the rear inclined surface are formed in an inner peripheral area of the rotor. 19. The viscous heater according to claim 15, wherein the through hole and the inclined surface are formed in an outer peripheral region of the rotor. 20. The through hole according to claim 15, wherein the through hole has a sharp convex corner.
9. The viscous heater according to 9. 21. The housing is provided with a storage chamber which is in communication with the heat generating chamber through the recovery passage and the supply passage and is capable of storing a viscous fluid exceeding the capacity of storing the viscous fluid in the heat generating chamber. Claims 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
The viscous heater according to 15, 16, 17, 18, 19 or 20.