KR100309897B1 - Thermo Actuator and Children Speed Controller Using It - Google Patents

Abstract

It is a temperature-sensitive actuator that operates without installing a temperature sensing element separately. Specifically, a yoke is formed by a stator made of a magnetic material, and an opening is provided in the interior surrounded by the stator, and the rotor is installed so as to rotate freely. In addition, magnetic poles, such as magnetic permeability, saturation magnetic flux density, or residual magnetic flux density, change depending on a part of the magnetic path, while a magnetic force source is provided at each of the magnetic paths. A thermal magnetic material was installed.

Description

Thermostat Actuator and Idle Speed Controller Using It

1 is a characteristic diagram of a rotary actuator for valve body control of an ISC (Idle Speed Controller).

2 is a configuration diagram of the first embodiment of the thermostat actuator according to the present invention.

3 is a characteristic diagram showing the relationship between the temperature and magnetic permeability of the thermosensitive magnetic material.

4 is a configuration diagram of another embodiment of the thermostat actuator according to the present invention.

5 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

6 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

7 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

FIG. 8 is a diagram of a variation of FIG.

9 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

10 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

11 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

12 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

13 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

14 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

FIG. 15 is an example of an embodiment of use.

FIG. 16 is a configuration diagram of the first embodiment in which the thermostat actuator of the present invention is applied to an idle speed controller of an automobile.

17 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

18 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

19 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

20 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

21 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

22 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

23 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

24 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

25 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

Fig. 26 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

27 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

28 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

29 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

30 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

31 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

32 is an analytical model drawing by the finite element method.

33 is a diagram showing the rotational force state based on the analysis result.

34 is a figure which shows the stable state (stop) by the analysis result.

35 is a block diagram of another embodiment according to the present invention.

36 is a diagram for explaining reaction force in the operation of FIG.

37 is a diagram for explaining the stable state in the operation of FIG.

* Explanation of symbols for main parts of the drawings

10: yoke 11-1, 11-2, 11-3, 11-4: magnetic pole piece

12 shaft 13 rotor

14: thermal magnetic material

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermosensitive actuator that generates a driving force by sensing a temperature change of an environment or a specific device, and an idle spin controller (hereinafter referred to as ISC) using the same.

Depending on the control target, there are cases where it is desired to change its response condition in response to changes in the environment or the temperature of the equipment. For example, there is an ISC mounted on an automobile. In this case, in the idling state of the automobile, the intake air amount thereof is affected by the engine temperature.

Therefore, the temperature sensing element is attached at the required position, and the detection signal from each temperature sensing element is collected to obtain the control condition. In particular, many types of each type, such as those using wax or bimetal, have already been proposed. In addition, it demonstrates in the idling state of a motor vehicle as a specific example which changes the response condition of an apparatus according to temperature change. First, in the case of an internal combustion engine of a car, it is necessary to reduce the bypass air volume when the engine temperature is high, and increase the bypass air volume when the engine temperature is low. In the heater and the like, it is necessary to open a large number of fuel valves to increase the amount of heat generated at low temperatures. In short, it can be seen from the above that the valve body for ISC is required to have a large stroke at low temperature and to move only a small stroke near the valve closing position at high temperature to prevent runaway. . FIG. 1 shows the required characteristics of the rotary actuator for controlling the valve body of the ISC, showing the temperature T [° C.] on the horizontal axis and the stroke [deg] on the vertical axis.

Therefore, this type of control requires a plurality of temperature sensing elements or temperature sensing operating elements, and it is necessary to construct a control circuit with temperature conditions, which not only complicates the structure but also lowers reliability. The cost also rises.

As a control condition, there is a need to close (close) the valve to be driven regardless of the temperature when the device is not energized. For example, it is a fuel valve such as a heater, and in this case, the fuel valve must be completely closed to prevent the outflow of fuel when it is inactive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a thermosensitive actuator that eliminates the need for a separate member, that is, a thermosensitive sensing element as a separate body, by providing a thermosensitive magnetic material whose magnetic properties change with temperature at a portion of the furnace.

Another object of the present invention is to enable taking out of the operating force according to temperature change by considering the arrangement of the thermosensitive magnetic material installed in the furnace.

Another object of the present invention is to improve the ISC which can use an actuator using a thermosensitive magnetic material as a driving source and can control the amount of air in the bypass passage.

Another object of the present invention is to provide a thermosensitive actuator in consideration of which magnetic pole material is to be installed at a position of the magnetic pole piece.

Another object of the present invention is to provide a temperature-sensitive actuator in consideration of where the air gap is installed and where the thermal magnetic material is installed.

It is another object of the present invention to provide a thermosensitive actuator in which the valve is normally closed regardless of temperature (normally closed).

Hereinafter, embodiments will be described with reference to the drawings.

2 is a configuration diagram of a first embodiment of the thermostat actuator according to the present invention. In Fig. 2, reference numeral 1 denotes a main body of the thermostat actuator, and a stator (yoke) 10 made of magnetic material and magnetic pole pieces 11-1, 11-2, 11-3, 11-4 connected to the stator. ) And the rotor 13 fixed to the shaft 12. In the present embodiment, the rotor 13 is a permanent magnet composed of N and S poles. In addition, the magnetic pole pieces 11-1 and 11-4 are thermosensitive magnetic materials (shown as belly-shaped portions) 14, for example, those having negative characteristics such as thermo ferrite. have.

3 shows the characteristic diagram of the thermally sensitive magnetic material, and shows the magnetic permeability (μ) on the vertical axis and the temperature (T) on the horizontal axis. As shown in the figure, the magnetic permeability increases with increasing temperature (static characteristic), as opposed to the magnetic permeability decreases with increasing temperature (negative characteristic).

Next, the operation of FIG. 2 will be described.

In the present embodiment, since thermoferrite is used as the thermosensitive magnetic material, the magnetic force lines A from the permanent magnet N pole forming the rotor 13 are normally magnetic pole pieces 11-1 and 11 as indicated by solid lines. -2) flows out to the yoke 10 and loops return to the S pole via the correspondingly installed magnetic pole pieces 11-3 and 11-4 evenly. The rotor 13 thus maintains the (neutral) position as shown.

When the temperature rises here, the magnetic permeability of the magnetic pole pieces 11-1 and 11-4 decreases because the magnetic material is a negative characteristic. Therefore, the magnetic force lines passing through the magnetic pole pieces 11-1 and 11-4 become weaker and become stronger toward the other magnetic pole pieces 11-2 and 11-3 as indicated by the dotted lines. Therefore, the permanent magnet 13 is rotated counterclockwise about the shaft (12). Therefore, in this case, if the valve body determines the rotational direction of the shaft 12 in the closing direction, the valve body can be closed in accordance with the rise in temperature.

In the above embodiment, the whole magnetic pole pieces 11-1 and 11-4 (parts in the shape of a belly) are made of a thermosensitive magnetic material such as thermoferrite of negative characteristics, but not limited thereto. The same effect can be obtained also by providing a material. Part of this case means that the part is provided partially (parts to the left and right of the magnetic pole piece) in the direction of the magnetic force line. According to the above embodiment, the temperature sensing operation element as a separate body is unnecessary, and the structure is simple, so that the cost can be reduced.

4 is a configuration diagram of another embodiment.

In Fig. 4, reference numeral 15 denotes a coil as a magnetic source, and the rotor (permanent magnet) 13 attached to the shaft 12 is in the opening 16 provided in a part of the yoke, and the rotation is performed. It is possible to install. In addition, the periphery of the permanent magnet 13 has wide openings (grooves widened in one side) 16-1 on both sides (left and right), and the gap between the upper and lower portions is narrow.

The installation of the sub-sensitive thermally sensitive magnetic material 14 at a diagonal position with the opening 16 interposed therebetween is the same as the above embodiment (figure 2), but in this embodiment, it is positive (+) It was set as the structure which installs the thermosensitive magnetic material 17 of () characteristic. Therefore, with the temperature rise, the portion of the thermally sensitive magnetic material 14 decreases the magnetic permeability, and conversely, the portion of the thermally sensitive magnetic material 17 increases the permeability. Their action increases each other's field distortion. That is, the difference of permeability with temperature rise becomes remarkable, and makes operation more reliable.

5 is a configuration diagram of another embodiment.

In FIG. 5, the same code | symbol is attached | subjected about the same part as FIG. 4, and description is abbreviate | omitted. In this embodiment, the thermosensitive magnetic material (negative characteristic) 14 is provided only on one side (in this case, oblique right upper side) of the magnetic path in which the permanent magnet 13 is inserted. In the present embodiment, the magnetic permeability of the dotted magnetic portion increases as a result because the magnetic permeability of the thermally sensitive magnetic material 14 decreases with the increase in temperature. Therefore, the difference of permeability becomes remarkable and the operation | movement further becomes certain.

That is, the magnetic flux of the solid line portion is reduced and the magnetic flux of the dotted line portion is increased, so that the rotor 13 rotates counterclockwise with temperature rise and promotes the valve closing action as described above.

6 is a configuration diagram of another embodiment, and the same parts as in FIG. 2 in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the thermally sensitive magnetic material 18 is provided only in one part of the left and right in the longitudinal direction of the magnetic pole pieces which are replaced and installed. When the thermomagnetic magnetic material 18 is, for example, a subspecialty, the magnetic flux on the magnetic pole pieces 11-1 and 11-4 decreases as the temperature rises, and the magnetic pole pieces 11 on the other side by that portion. -2, 11-3) side is increased. Therefore, the rotation angle of the rotor 13 can be changed.

7 is a configuration diagram of another embodiment, and the same parts as in FIG. 6 in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, two permanent magnets 19-1 and 19-2, which are magnetic force sources, are installed in the stator 10, and the rotor 13 is not formed of permanent magnets. The rest of the configuration is the same as that in FIG. Also in this embodiment, in addition to obtaining the same effects as in the case of FIG. 6, the size of the magnetomotive force can be changed relatively simply (by changing the strength of the permanent magnet), and the degree of freedom in application can be increased.

FIG. 8 is a modification of FIG. 7, in which one permanent magnet 19, which is a magnetic force source, is installed in the stator 10, and the other side of the stator is opened to limit the passage of the magnetic flux. The other structure is the same as that of FIG. 7, and it is clear that the same effect as above is obtained.

9 is a block diagram of another embodiment. In this embodiment, the thermosensitive magnetic materials 20 and 21 are adhered to the convex portions of the rotor 13 made of permanent magnets, and no treatment is performed on the magnetic pole pieces 11-1, 11-2, 11-3, 11-4. Not to. In the figure, for example, the pear-shell portion 20 is a sub-characteristic, and the oblique portion 21 is a static-characteristic.

According to the present embodiment, the magnetic permeability of the thermally sensitive magnetic materials 20 and 21 changes as the temperature rises, respectively, and the same function as described above, as well as to concentrate a specific function on one rotor (the thermal magnetic material is a rotor Only the end of (13)) Only this part is manufactured by a specialized manufacturer, which is convenient for parts management.

10 is a block diagram of another embodiment. In this embodiment, the magnetic pole pieces 11-1, 11-2, 11-3, and 11-4 are magnets as the thermosensitive magnetic material, and the rotor 13 is not magnets. In the drawing, the magnetic pole pieces 11-1 and 11-4 are, for example, ferrite magnets in which the magnetic force decreases with increasing temperature, and the corresponding magnetic pole pieces 11-2 and 11-3 are referred to. A case of using a samarium cobalt magnet which is stable (with weak negative characteristics) is shown. In this case, the magnetic flux follows a solid line in normal operation, but the magnetic force of the ferrite magnet decreases with temperature rise, and the rotor is rotated counterclockwise. This embodiment also obtains the same effects as the above embodiments.

11 is a block diagram of another embodiment. In this embodiment, the rotor 13 is constituted by combining a permanent magnet as a thermosensitive magnetic material having negative or static characteristics with a permanently stable permanent magnet. In other words, each permanent magnet composed of a pear shell portion 22 and an oblique portion 23 is combined. The operation is as described above. Also in this embodiment, it is clear that the same effects as those in the above embodiments can be obtained.

12 is a block diagram of another embodiment. In the present embodiment, two permanent magnets 24-1 and 24-2 are installed as stator 10 as a magnetic force source. And the rotor 13 is comprised by combining the thermosensitive magnetic material which has a negative characteristic or a static characteristic. Also in this embodiment, the same effects as in the above embodiment can be obtained.

13 is a block diagram of another embodiment. In this embodiment, the air gap 1 between one pole piece 11-1, 11-4 and the rotor 13 and the other pole piece 11-2, 11-3 It is unbalanced with it (not shown) with the rotor 13. That is, in the figure, the side of the air gap 1 is larger than that of the other side. Furthermore, the stator 10 is provided with the thermosensitive magnetic material 25-1 and 25-2 of the negative characteristic between each pole piece.

Therefore, at all times (low temperature), the magnetic flux follows the path of the solid line, but when the temperature rises, the portion of the thermally sensitive magnetic materials 25-1 and 25-2 is turned off due to a decrease in permeability, and is indicated by a dotted line. To form a path.

As a result, the rotor 13 is rotated clockwise. Also in this embodiment, the same effects as in the above embodiment can be obtained.

14 is a block diagram of another embodiment.

In the present embodiment, the electromagnetic coil 26 is wound around the upper portion of the core as the thermally sensitive magnetic material 27 based on FIG.

In the present embodiment, when current flows through the electromagnetic coil 26 using the principle already described, the magnetic flux generated at high temperature is reduced by the thermally sensitive magnetic material provided under the electromagnetic coil. It is used as a 'fail safe'. Since the principle of operation has already been described, it is omitted here.

15 (a) and 15 (b) are usage diagrams, and in this case, they are used as a driving source of the choke valve. In Fig. 15 (a), which is a side view, 28 is a choke valve, and the rack 30 is driven by a thermostat actuator 29, so that the pinion 31 is shown as shown in Fig. 15 (b). The choke valve 28 is rotated through this method. The deceleration actuator is a valve-driven torque due to the eccentricity of the valve. By rotating to the balance position, the pinion and valve can be connected directly. In addition, when the temperature actuator is a type capable of electronic driving, it is possible to actively control the air-fuel ratio.

16 (a), (b) and (c) are examples where the above-described thermostat actuator is applied to an idle speed controller (ISC) of an automobile. The thermostat actuator body used in this embodiment winds the coil 15 as a magnetic force source on the yoke 10 to install a rotor 13 (made of permanent magnets) 13 in the opening 16, with the opening therebetween. The thermally sensitive magnetic material 14 is installed at an inclined position and has already been sufficiently explained.

16 (a) is a front view, and a schematic cross-sectional view seen from a double core (a dashed-dotted line) is a 16th (b) diagram, and the control is fixed to the shaft with the shaft 12 attached to the bearing 32 as a point. The valve 33 has a configuration in which the valve rotates simultaneously with the shaft. FIG. 16 (c) shows the outline of the inside of the main body 34 in cross section, and the blown air flows to the bypass passage side different from the main air passage. In this case, the control valve 33 controls the air amount. However, since the structure itself is well-known, description is abbreviate | omitted.

According to this embodiment, the control valve is rotated by using a thermostat actuator in which a thermosensitive magnetic material is inserted into a part of the furnace, and the idle speed control is possible according to the temperature without installing the thermosensitive sensor separately.

17 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In this embodiment, the thermosensitive magnetic material 35 of negative characteristics is provided on a part of the cross sections of one of the corresponding magnetic pole pieces 11-1 and 11-4. In addition, a negative magnetic material is used for the thermally sensitive magnetic material.

Next, the operation will be described.

In this embodiment, since the negative magnetic material is used for the thermally sensitive magnetic material, the permeability is large at low temperatures. Therefore, each of the magnetic pole pieces 11-1, 11-4 and 11-2, 11-3 passes through the same magnetic flux. Thus, the magnetic flux coming out of the permanent magnet of the rotor 13 is stator at the pole piece 11-2, return loop through the pole piece 11-4 and stator pole piece 11-3 from the pole piece 11-1. The return loop through) becomes symmetrical, so that the rotor 13 is centered.

Moreover, since the magnetic permeability of the thermosensitive magnetic material decreases at high temperatures, the magnetic flux through the magnetic pole pieces 11-1 and 11-4 decreases, and the magnetic flux through the magnetic pole pieces 11-2 and 11-3 increases. Therefore, the permanent magnet 13 of the rotor is docked in the direction to be attracted to the magnetic pole pieces (11-2, 11-3) so that the permanent magnet 13 of the rotor rotates in the direction of the solid arrow. In addition, when the temperature reaches the Curie temperature of the thermally sensitive magnetic material, it turns into a box stone, and thus, even if the temperature is increased above, it does not rotate. The amount of rotation at this time can be easily set since the area of occupancy in the magnetic pole pieces of the thermally sensitive magnetic material is determined.

18 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention.

In FIG. 18, the same code | symbol is attached | subjected to FIG. 17 and the same couple, and description is abbreviate | omitted. In this embodiment, the stator 10 is cut off between the magnetic pole pieces 11-4 and 11-3 to form a gap (air gap) 36, and a stator source 37 is provided in the stator. The rest of the configuration is the same as that in FIG.

Next, the operation will be described.

In this case, the magnetic flux generated by the coil of the magnetomotive force source 37 is basically a loop (the rotor acts in the off-valve direction) and the magnetic pole from the magnetic pole piece 11-2 to the magnetic pole piece 11-3. A loop (the rotor acts in the open valve direction) is generated from the piece 11-1 through the magnetic pole piece 11-4.

Therefore, when the saturation magnetic flux density of the thermally sensitive magnetic material decreases at high temperature, the magnetic flux from the magnetic pole piece 11-1 to the magnetic pole piece 11-4 is reduced, so that the action of the open valve direction by the coil is reduced, thereby reducing the Satisfy the requirements. In addition, since the rotation amount of the rotor corresponding to the temperature change can be determined by converting the adhesion area (occupation area) of the thermosensitive magnetic material, the design is easy to obtain the required characteristics.

19 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

In FIG. 19, the same code | symbol is attached | subjected about FIG. 17, FIG. 18, and an equivalent part, and description is abbreviate | omitted. In this embodiment, a thermosensitive magnetic material 38 is provided between the stator 10a and 10b, and an air gap 39 is provided between the stator 10b and 10c. In this case, the relationship between the temperature sensing magnetic material width ₍₁₁₎ and the air gap ₍₁₂₎ 1 _1> 1 ₂ a characteristic change caused by a.

Next, the operation will be described.

At low temperature, since the thermally sensitive magnetic material 38 passes through the magnetic flux equivalent to that of the stator 10, the magnetic flux from the permanent magnet 13 constituting the rotor is the stator 10a and the thermally demagnetized magnetic pole piece 11-1. The return loop through the material 38, the stator 10b, and the pole piece 11-4 is strong, and the magnetic flux from the pole piece 11-2 to the pole piece 11-3 passes through the air cam 39. Because it is weak. As a result, the rotor 13 rotates from the center line (the line between the magnetic pole piece 11-1 and the magnetic pole piece 11-2) to the open valve side.

At high temperature, when the saturation magnetic flux density of the thermosensitive magnetic material decreases and the temperature reaches the Curie temperature of the thermosensitive magnetic material, it becomes paramagnetic, and the thermosensitive magnetic material portion is as if air is present.

In this case, when it is set to 1 ₁ > 1 ₂ , the magnetoresistance of the air gap 39 is smaller than that of the thermosensitive magnetic material. Therefore, the magnetic flux through the magnetic pole pieces 11-1 and 11-4 decreases, and the magnetic flux through the magnetic pole pieces 11-2 and 11-3 increases. As a result, the rotor 13 generates torque in the pulling direction toward the pole pieces 11-2 and 11-3, and the rotor 13 rotates in the off valve direction from the center line.

20h is a block diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 20, the same code | symbol is attached | subjected about 19, and the same code | symbol is abbreviate | omitted, and description is abbreviate | omitted. In this embodiment, the magnetic force source 37 is provided, and the rest of the configuration is the same as that in FIG.

First, the magnetic flux generated by the coil of the magnetomotive force source 37 acts on the magnetic pole piece 11-2 through the magnetic pole piece 11-3 in a loop (rotor 13) in the off valve direction) and the magnetic pole piece 11. -1) creates a loop (rotor; 13 acting in the direction of the open valve) through the pole piece 11-4. When the saturation magnetic flux density of the thermally sensitive magnetic material decreases at high temperatures, the magnetic flux passing through the magnetic pole pieces 11-4 from the magnetic pole pieces 11-1 decreases. In this case, the action of the coil in the direction of the open valve is reduced, which satisfies the requirements of the ISC.

21 is a configuration diagram of another embodiment of the thermostat actuator according to the present invention.

In FIG. 21, the same code | symbol is attached | subjected to FIG. 19, and an equivalent part, and description is abbreviate | omitted. The difference between this embodiment and FIG. 19 is that the installation position of the thermosensitive magnetic material 38 is set between the magnetic pole pieces 11-4 and 11-3 (in this connection, the thermosensitive magnetic material is installed in FIG. 19). The position is between the pole piece 11-1 and (11-3).

Referring to the operation, since the thermosensitive magnetic material 38 passes the magnetic flux in the same manner as the stator 10 at low temperature, the magnetic flux from the rotor 13 is transferred from the magnetic pole pieces 11-1 to the stator 10a, The loop which returns through the thermosensitive magnetic material 38, the stator 10b, and the pole piece 11-4 is strong. This is because the loop from the magnetic pole piece 11-2 toward the stator 10c passes through the air gap 39. As a result, the rotor 13 rotates from the center line to the open valve side.

On the other hand, since the saturation magnetic flux density of the thermosensitive magnetic material 38 decreases at high temperatures, the thermosensitive magnetic material changes to paramagnetic when the temperature reaches the Curie temperature of the thermosensitive magnetic material. That is, the thermosensitive magnetic material portion becomes the same as that in which air exists, and this portion becomes a large magnetoresistance. In this case, between the width of the air gap (39) ₍₁₂₎ to the width of the temperature sensing magnetic material (38, ₁₁₎ has a relationship of _{11> 12.} Therefore, the magnetic flux loops through the magnetic pole pieces 11-1 and 11-4 are stronger than the magnetic flux loops through the magnetic pole pieces 11-2 and 11-3, and do not move from the center line to the off valve side.

22 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 22, the same code | symbol is attached | subjected to FIG. 21, and an equivalent part, and description is abbreviate | omitted. In this embodiment, the magnetic force source 37 is provided, and the rest of the configuration is the same as in FIG.

First, the magnetic flux generated by the coils of the magnetomotive force source 37 is generated in the loop through the magnetic pole piece 11-2 through 11-3 (the rotor 13 acts in the off-valve direction) and the magnetic pole piece 11-1. Create a loop through 11-4 (acting the rotor 13 magnet in the direction of the open valve). When the saturation magnetic flux density of the thermally sensitive magnetic material 38 decreases at a high temperature, the magnetic flux generated by the coil decreases. Therefore, the stroke of the rotor 13 due to the coil on / off is reduced to satisfy the required characteristics of the ISC.

23 is a block diagram of still another embodiment of the thermostat actuator according to the present invention.

In FIG. 23, the thermosensitive actuator main body 1 is a type in which the thermosensitive magnetic material 38 is fitted, and the stator 10a and the stator 10b are integrally formed so that the portion of the thermosensitive magnetic material becomes a magnetic path. It penetrates the space 40 which has a shape.

Also, (11-10) and (11-40) are paired with a wider pole face, and in the same way, (11-20) and (11-30) are paired with a narrower pole face. have. 13 forms a circle with a rotor and rotates the shaft 12 to a point. As can be seen from the figure, the position of the rotor 13 is opposite to the rotor 13 of the magnetic pole pieces 11-10 and 11-40 and the magnetic pole pieces 11-20 and 11-30. It is determined by the ratio of.

In FIG. 23, the solid line is a low temperature gyro and the dotted line is a high temperature gyro. Next, the operation will be described. However, at low temperature, the thermally sensitive magnetic material 38 passes through the magnetic flux at the same time as the stator 10. Therefore, the magnetic flux from the rotor 13 is reduced from the magnetic pole pieces 11-10 to the rotor 10a, The loop returning through the thermosensitive magnetic material 38, the stator 10b, and the pole piece 11-40 is strong so that the center of the rotor 13 is the center line d between the pole pieces 11-10 and 11-40. Balance at the position of).

Next, at high temperatures, the saturation magnetic flux density of the thermosensitive magnetic material decreases. And when the temperature reaches the Curie temperature of the thermal magnetic material, the thermal magnetic material becomes paramagnetic and this part becomes as if air exists, making the magnetic flux difficult. In this case, the magnetic flux through the magnetic pole pieces 11-10 and 11-30 and the magnetic flux through the magnetic pole pieces 11-20 and 11-40 form a symmetrical loop and are balanced (dashed line in FIG. 23). Therefore, the center line of the rotor 13 is in the position of c (slightly rotates left).

24 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention. In Fig. 24, reference numeral 37 denotes a magnetic force source, and a thermosensitive magnetic material is provided between the stator 10a and the stator 10b. 40 is a space, and the rotor 13 attached to the shaft 12 is rotatable in the opening 16 installed there, which has a structure connected to the connecting members 41 and 42 below. Is installed.

In addition, the periphery of the rotor 13 has wide openings 16 and 16-1 on both inclined side surfaces (left and right), and narrow gaps 36 are provided on the inclined both sides corresponding thereto. Therefore, the parts 11-11 and 11-41 corresponding to the narrow gap 36 are wide magnetic pole pieces, and (11-21 and 11-31) are narrow magnetic pole pieces.

Therefore, the magnetic flux generated by the coils is looped through the magnetic pole pieces 11-21 through 11-31 (the rotor 13 acts in the off-valve direction) and the magnetic pole pieces 11-11 through 11-31. Create a loop through 41 (acting the rotor 13 in the direction of the open valve). When the saturation magnetic flux density of the thermally sensitive magnetic material 38 decreases at high temperatures, the loops passing through the magnetic pole pieces 11-21 to (11-31) and the magnetic flux passing through the magnetic pole pieces 11-11 through (11-41) The magnetic flux on both sides of the loop is reduced, so that the stroke of the rotor at the time of pre-coiling of the coil is reduced, thereby satisfying the requirements of the ISC. The members 41 and 42 connecting the stators 10a and 10b need to be processed and assembled. In addition, the magnetic circuit has no influence because the cross-sectional area is set to be small.

25 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention.

In FIG. 25, the same code | symbol is attached | subjected to FIG. 17, and an equivalent part, and description is abbreviate | omitted. The characteristic of FIG. 25 is that the thermosensitive magnetic material 35 is combined as different from the Curie temperature, that is, in this embodiment as 35a, 35b, 35c and 35d, 35e, 35f from the low Curie temperature. will be. In addition, the thermal magnetic material is installed on a part of the pole piece.

Therefore, as a function, first, at low temperature, the thermally sensitive magnetic materials 35a, 35b, 35c, 35d, 35e, and 35f pass through the magnetic flux in the same way as the magnetic pole pieces 11-2 and 11-3. The magnetic flux consists of a symmetrical return loop through the stator and the magnetic pole piece 11-3 from the magnetic pole piece 11-2 and a return loop through the stator and the magnetic pole piece 11-4 from the magnetic pole piece 11-1. The rotor 13 is located centrally. When the temperature sensitive magnetic material rises in temperature, the saturation magnetic flux density decreases, and when it reaches the Curie temperature of the temperature sensitive magnetic material, it becomes paramagnetic and enters a state of passing through magnetic flux at the same level as air.

Therefore, by combining different temperature-sensitive magnetic materials 35a, 35b, 35c, 35d, 35e, and 35f at Curie temperature, the characteristics of deceleration of the magnetic flux through the magnetic pole pieces 11-1 and 11-4 in response to the temperature increase are arbitrarily set. There is a number. Due to the reduction of the magnetic flux through the magnetic pole pieces 11-1 and 11-4, the rotor 13 generates a torque in the direction in which the magnetic pole pieces 11-2 and 11-3 are attracted, so that the rotor 13 Rotate This rotation characteristic can be set precisely.

Fig. 26 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 26, the same code | symbol is attached | subjected about FIG. 23, and an equivalent part, and description is abbreviate | omitted. In this embodiment, the thermosensitive magnetic material 38a is disposed between the stators 10a and 10c, and the thermosensitive magnetic material 38b is disposed between the stators 10b and 10c.

The position of the rotor is determined by the ratio of the magnetic pole pieces 11-10, 11-40 and the opposing surfaces of the rotors 11-20, 11-30 to the rotor 13. Therefore, at low temperature, the thermally sensitive magnetic material passes through the magnetic flux at the same time as the stator 10, and the magnetic flux coming out of the rotor 13 is the stator 10a and the thermally sensitive magnetic material 38a at the magnetic pole pieces 11-10. 10c), the return loop through the thermosensitive magnetic material 38b, the stator 10b, and the pole piece 11-40 is strong, and the center line of the rotor 13 is the pole piece 11-10 or (11-40). Balance at the position of the centerline d between.

When the temperature rises, the saturation magnetic flux density of the thermosensitive magnetic material decreases. Here, when the temperature reaches the Curie temperature of the thermally sensitive magnetic material, the thermally sensitive magnetic material changes paramagnetism, and the thermally sensitive magnetic material becomes as if air exists, making it difficult to pass through the magnetic flux. Thus, the magnetic flux through the magnetic pole pieces 11-10 and 11-30 and the magnetic flux through the magnetic pole pieces 11-20 and 11-40 are balanced to form a loop. Therefore, the center line of the rotor 13 becomes the position of the center line c. At this time, if the Curie point temperature, thickness, and cross-sectional area of each thermally sensitive magnetic material are selected, the rotation characteristics of the rotor can be precisely obtained. The magnetic force source 37 can control the rotor.

27 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 27, the stator 10a has a pair of magnetic pole pieces 11-1 and 11-4, and the clearance 36a and 36b is provided in the center position. The other pair of magnetic pole pieces 11-2 and 11-3 is provided in the stator 10b, 10c provided separately. That is, the stator is divided into three parts like (10a, 10b, 10c).

And the thermal magnetic material 38a is integrated with the stator in a form fitted with stators 10a and 10b. Similarly, the thermal magnetic material 38b is integral with the stator with a type fitted with stators 10a and 10c. It becomes. Numeral 37 is a magnetomotive power source and is connected to a gyro installed upward through the space 40. In the thermal actuator according to the above embodiment, the thermal magnetic material has a high permeability at low temperature, and thus easily penetrates the magnetic flux. Therefore, the magnetic flux through the magnetic pole pieces 11-1 and 11-3 and the magnetic flux through the magnetic pole pieces 11-2 and 11-4 are the same. However, at high temperatures, the magnetic permeability of the thermally sensitive magnetic materials 38a and 38b decreases, so that the rotor rotates right and moves in the off valve direction. In addition, since a magnetoelectric power source is added, the operation becomes more reliable.

28 is a configuration diagram of an embodiment of the thermostat actuator according to the present invention. In FIG. 28, the same code | symbol is attached | subjected to FIG. 27 and an equivalent part, and description is abbreviate | omitted.

In this embodiment, the rotor 13 is always positioned at the center. That is, since the magnetic resistance exists in the junction part due to the junction gap which arises in the junction between a thermosensitive magnetic material and a stator, the rotor 13 may be in the state which rotated a little from the center to the open side at low temperature.

As a means for correcting the rotation of the open side, a magnetoresistive portion (referred to as a compensation portion) 42 corresponding to the magnetoresistance of the junction gap is provided.

In the present embodiment, a round hole is drilled in the furnace to obtain a desired compensation amount by the magnitude of the diameter.

29 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In Fig. 29, the same reference numerals are given to the same and corresponding parts in Fig. 28, and description thereof is omitted. In this embodiment, the air gap 39 is provided in the path as a compensator. In this embodiment, the desired compensation amount is obtained by adjusting the cap length.

30 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 30, the same code | symbol is attached | subjected to FIG. 29 and an equivalent part, and description is abbreviate | omitted.

Since the junction gap is minute, the air gap 39 for compensating for this must also be made small.

And such a process is difficult and a deviation arises. Therefore, by providing predetermined gaps 43-1 and 43-2 between the thermally sensitive magnetic materials 38a and 38b and the corresponding stators 10a-1 and 10c, the gap for compensation facilitates processing. In other words, the effect of the junction gap is reduced.

31 is a configuration diagram of yet another embodiment of the thermostat actuator according to the present invention. In Fig. 31, reference numeral 1 denotes a thermostat actuator body, which includes a magnetic path 10 for connecting, magnetic pole pieces 44-1 and 44-2, magnetic pole pieces 44-1 and 44-2, and It consists of thermosensitive magnetic materials 45-1 and 45-2 interposed between the gyro 10, respectively. Moreover, between each pole piece 44-1, 44-2, there is a main air gap 5, between which the rotor 13 (magnetic force source) which becomes a permanent magnet is arrange | positioned, and the shaft 12 Has a rotating configuration. 36a and 36b are provided as the sub air gaps on both sides of the main air gap 5. 46 is an electromagnetic coil (magnetic force source).

In addition, the thermal magnetic materials 45-1 and 45-2 vary in permeability according to temperature, and in this case, they are easily passed through magnetic flux at low temperature, and become thermomagnetic or sperm material which becomes paramagnetic when the temperature rises to the Curie temperature. magnetic shunt material). In this embodiment, two thermosensitive magnetic materials are provided, but one may be used.

The operation is described next.

First, if the electromagnetic coil 36 is not energized, the rotor 13 stops at the position shown. The reason is that the magnetic flux at the N pole of the rotor 13 is returned to the S pole via the main air gap 5 and the pole pieces 44-1, 44-2, and in this case, The magnetic flux of the sub air gaps 36a and 36b does not exist. This is because this state is most stable magnetically.

Next, when the electromagnetic coil 46 is energized, the magnetic flux from the magnetomotive force source is the magnetic path 10 for connection, the thermal magnetic material 45-1, the magnetic pole piece 44-1, the sub-air gap 36a or the like. 36b, the magnetic pole piece 44-2, the thermal magnetic material 45-2, and the path of the magnetic path 10. Therefore, the rotor rotates in the direction of canceling the magnetic energy of the sub air gaps 36a and 36b so that the magnetic energy of the sub air gaps 36a and 36b is zero, that is, the magnetic flux through (36a, 36b) is zero. Stop at the desired position.

Therefore, when the actuator is placed in the engine room of the automobile, the temperature rises according to the short-term state of the engine, and the thermosensitive magnetic members 45-1 and 45-2 become difficult to pass through the magnetism. In the heater, the magnetoresistance changes depending on the environmental temperature. This means that the influence of the electromagnetism generated from the electromagnetic coil 46 on the permanent magnet of the rotor 13 is reduced.

Therefore, even if the current value flowing through the electromagnetic coil 46 is the same, the rotor moves in the position direction at the time of non-energization at the same time as the temperature rises. The amount of movement at this time is determined by the thickness t, the cross-sectional area 1, and the like of the thermosensitive magnetic members 45-1 and 45-2.

According to this embodiment, in the non-energization of the electromagnetic coil 46, despite the temperature, the rotor is in the most stable position, i.e., as shown in FIG. On the other hand, even when temperature rises, it stops in the said stable position by the action of the thermosensitive magnetic materials 45-1 and 45-2. This fact means that it is in a normally closed state.

As can be seen from the above, the stable state of the rotor 13 is a state in which there is no magnetic flow in the sub air gaps 36a and 36b. In general, in the design of magnetic circuits of l type, the magnetic flow is calculated by a finite element analysis program performed on a computer. Furthermore, the torque generated in the rotor is calculated, and the torque is zeroed. It is trying to understand the characteristics.

However, when the torque is to be calculated, a high performance computer is required, but according to the above embodiment, the characteristics of the actuator can be grasped only by the calculation result of the magnetic flow in the case of the stable position of the rotor. In this case, in the computation of the magnetic flow, even a small computer obtains a relatively good result. As a result, development time can be shortened and design quality can be improved.

32 shows a model form for magnetic field analysis of a motor by the finite element method. In addition, the analytical model is in the shape of FIG. 32 for input in the polar coordinate system, and the same reference numerals are given to the parts corresponding to the components in FIG.

33 shows an analysis result using the model of FIG. 32, and the electromagnetic coil is in an energized state. As shown in FIG. 33, the flow of magnetic flux from the magnetic pole pieces 44-2 to the 44-1 with respect to the sub air gaps 36a and 36b is observed, so that the rotor 13 moves in the direction of the arrow. It can be seen that the rotation torque is generated.

34 is a view showing a state where the rotor 13 is stopped at the most stable position. When the rotor 13 is rotated in the state of FIG. 33, the magnetic flux in the sub air gaps 36a and 36b becomes zero at any position.

At this time, the torque generated in the rotor 13 is zero, and the advantage is a position at which the rotor is stopped.

This state is verified in Fig. 34. Therefore, it is understood that the stop position of the rotor can be obtained only by observing the magnetic flux in the sub-air gap without calculating the torque of the rotor. 33 and 34 show the relationship between the rotational state and the stable state (still state) of the rotor and the flow of magnetic flux at that time.

35 is a configuration diagram of still another embodiment of the thermostat actuator according to the present invention. In FIG. 35, the same code | symbol is attached | subjected about the same functional part as FIG.

In this embodiment, the overall configuration is a linear motion. Therefore, between the magnetic pole piece 10-1 and the magnetic pole piece 44-1 in which one sub-air gap 436 is provided between the magnetic pole pieces 44-1 and 44-2, and the electromagnetic coil 46 is provided. It interposed the thermally sensitive magnetic material 45 in between. 47 is a mover.

Next, the operation will be described.

First, when no current flows through the electromagnetic coil 46, a ruler is formed through the magnetic pole piece 44-1 from the N pole of the mover 47 to the S pole.

In this case, no magnetic flux flows through the sub-air gap 36 and is in a stable state as in the case of FIG. 31, and therefore the mover 47 is stopped at this position.

In order to move the mover 47 in the direction of the arrow, a current flows through the electromagnetic coil 46. In this case, FIG. 36 illustrates that the mover 47 stops at a predetermined position.

Here, the case where the mover 47 is moved to the illustrated position by the external force with the current of the electromagnetic coil 46 as 0 is considered.

In this state, the magnetic flux as shown through the sub air gap 36 and the thermosensitive magnetic material 45 flows through the magnetic pole piece 44-2. At this time, the energy stored in the sub air gap 36 acts as a direction for reducing this, that is, a reaction force for returning the mover 47 to the left.

When the electromagnetic coil current is set to a predetermined value, as shown in FIG. 37, all of the magnetic flux flowing through the sub air gap 36 flows to the thermosensitive magnetic material 45 side.

As a result, the magnetic energy in the sub-air gap 36 becomes zero and becomes stable.

Although the reaction force can be formed with reference to FIGS. 35, 36, and 37, the reaction force is set to zero by the coil energization, and thus the movement of the mover occurs. In any case, the mover 47 In order to move), it is natural that the electric coil 46 must be operated by applying a current to the last.

In addition, it has already been described that the thermally sensitive magnetic material is difficult to pass through the magnets due to the temperature rise. However, when the temperature reaches a predetermined Curie temperature, the influence of the electromagnetic coil is reduced, thereby reducing the amount of movement. In the non-energization state, the entire off position of the valve becomes stable.

As described above, according to the present embodiment, not only can the rotor position be in the off position in spite of the temperature when the coil is not energized, but also the characteristics of the actuator can be analyzed only by the flow of magnetism, and the development time can be shortened and the design is easy. Done.

Claims (31)

A stator made of a magnetic material forming a yoke, a rotor in an opening formed in the stator, and a rotor installed so as to rotate freely, and a plurality of magnetic poles connected to the stator to magnetically connect the stator and the rotor. In the thermosensitive actuator having one or more magnetomotive force sources disposed in any one of the respective parts, a thermosensitive magnetic material whose magnetic properties change with temperature so as to obtain a rotational force of the rotor as the temperature is changed, the magnetomagnetic source A thermostat actuator, characterized in that it is provided in a part of the furnace through which the magnetic flux formed by the passage passes. The cylindrical magnet has a stator made of a magnetic material forming a yoke, an electromagnetic coil installed in the stator, and a rotor made of a cylindrical magnet installed in the stator to be freely rotated in an opening widened from side to side. A thermosensitive actuator that generates rotational force to a rotor from a magnetic flux generated from a rotor and an electromagnetic coil, wherein the magnetic flux paths interposed therebetween the conveniently provided openings have either a negative or static characteristic thermal magnetic material, respectively, diagonally. A thermosensitive actuator, wherein the thermosensitive actuator is disposed to face each other, or is disposed in an intersecting shape by opposing each of the thermosensitive magnetic materials having negative characteristics and static characteristics on a diagonal line. 3. The thermosensitive actuator according to claim 2, wherein the thermosensitive magnetic material is either of a negative characteristic or a static characteristic, and the thermosensitive magnetic material is provided only on one side of a magnetic flux path having the opening biased from left to right. . The thermosensitive actuator according to claim 1, wherein the thermosensitive magnetic material is provided only at a portion of a pair of opposing magnetic pole pieces. The thermosensitive actuator according to claim 1, wherein the thermosensitive magnetic material is provided only on a portion of a pair of opposing magnetic pole pieces, and a permanent magnet is installed in the stator as a source of magnetic force. The thermosensitive actuator according to claim 1, wherein the rotor is made a permanent magnet and at the end of each convex portion of the magnet, a thermosensitive magnetic material having a different temperature-sensitive characteristic is juxtaposed and bonded. . The thermosensitive actuator according to claim 1, wherein each of the magnetic pole pieces is made of a thermosensitive magnetic material having different negative or static characteristics for each pair of opposing magnetic pole pieces. The thermosensitive actuator according to claim 1, wherein the thermosensitive magnetic material is a research magnet having a large change in magnetic force due to temperature, and is configured in combination with a permanent magnet stable to temperature. 2. The rotor according to claim 1, wherein the rotor is composed of a normal magnetic material and a thermosensitive magnetic material having a negative characteristic, and a combination of a normal magnetic material and a thermosensitive magnetic material having a positive characteristic, and a thermosensitive magnetic material having a negative characteristic and a thermosensitive magnetic material having a static characteristic. The stator is a thermostat actuator, characterized in that a permanent magnet is installed as a source of magnetic force. 2. The rotor according to claim 1, wherein the rotor is a permanent magnet, and the air gap between the pair of opposing magnetic pole pieces and the rotor is formed so as to be unbalanced with the air gap between the pair of opposing magnetic pole pieces and the rotor. A thermosensitive actuator, characterized in that the thermosensitive magnetic material is inserted into a stator of the stator between the magnetic pole pieces. The thermosensitive actuator according to claim 1, wherein an electromagnetic coil is provided on the upper portion of the magnetic furnace of the thermosensitive magnetic material as a source of magnetic force. A main air passage having a throttle valve, a bypass rotatable in parallel to the main air passage, and a shaft which rotates integrally with the valve body provided for controlling the air flow to the bypass passage; It has a temperature-sensitive actuator including a cylindrical magnet as a rotor installed at the end of the rotor, generates a rotational force on the shaft through the rotor by the magnetic flux from the electromagnetic coil to operate the valve body and control the air flow to the bypass passage In an idle speed controller, an idle speed controller is provided with a thermosensitive magnetic material in a part of a magnetic path having an opening provided with the cylindrical magnet in a fraudulent temperature actuator. A stator made of a magnetic material forming a yoke, a rotor made of a permanent magnet in an opening in the stator and installed to rotate freely, and connected to the stator to magnetically connect the stator and the rotor. A thermosensitive actuator comprising a plurality of magnetic pole pieces, wherein a thermosensitive magnetic material is provided on a part of each rotor side facing surface of at least one pair of opposed magnetic pole pieces. The temperature-sensitive actuator according to claim 13, wherein a magnetic force source is provided in the magnetic path by disconnecting the stator's magnetic path and providing a gap. A stator (10a, 10b, 10c) made of a magnetic material forming a three-part yoke, a rotor made of a permanent magnet in an opening formed in the stator and freely rotatable, and the stator and the rotor magnetically It is composed of a plurality of magnetic pole pieces connected to the stator for connection, and installed a thermosensitive magnetic material between the stator (10a, 10b) and an air gap between the stator (10b, 10c) Temperature actuator. The thermostat actuator according to claim 15, wherein a magnetic force source is provided in the furnace. A stator (10a, 10b, 10c) made of a magnetic material forming a three-part yoke, a rotor made of a permanent magnet in an opening formed in the stator and freely rotatable, and the stator and the rotor magnetically It is made up of a plurality of magnetic pole pieces connected to the stator for connection, and provided with a thermosensitive magnetic material between the stator (10a, 10b) and the magnetic pole pieces (11-4, 11-3), An air temperature actuator, wherein an air gap is provided between 10b and 10c. The thermosensitive actuator according to claim 17, wherein a magnetic force source is provided in the magnetic path between the magnetic pole pieces (11-4, 11-3). A stator (10a, 10b) made of a magnetic material forming a two-part yoke, and a rotor made of a permanent magnet in an opening formed in the stator and installed to rotate freely, and magnetically connecting the stator and the rotor. It consists of a plurality of magnetic pole pieces connected to the stator for installation, the connection position of the stator (10a, 10b) forms a magnetic path around the space, while inserting a thermosensitive magnetic material into the magnetic path and the magnetic pole piece (11) -10, 11-40) and the temperature-sensitive actuator, characterized in that the opposing surfaces of the magnetic pole pieces 11-20, 11-30 have different areas. A stator made of a magnetic material forming a yoke and inserting a thermally sensitive magnetic material, an electronic coil installed in the stator, and a magnet installed in a widened opening conveniently inclined to the left and right in the stator to rotate freely. In a thermosensitive actuator having a rotor made of the rotor and generating a rotational force to the rotor from the magnetic flux generated from the rotor and the electromagnetic coil, the magnetic pole pieces 11-11 and 11-41 at positions positioned between the conveniently provided openings. ) And a thermosensitive actuator characterized by varying the area of the opposing surface with respect to the rotor of the pole pieces 11-21, 11-31. A stator made of a magnetic material forming a yoke, a rotor made of a permanent magnet in an opening formed in the stator and installed to rotate freely, and connected to the stator to magnetically connect the stator and the rotor. A thermostat actuator comprising a plurality of magnetic pole pieces, wherein a plurality of thermosensitive magnetic materials having different Curie temperatures are provided on a portion of the pair of magnetic pole pieces to be opposed to each other. A stator (10a, 10b) made of a magnetic material forming a two-part yoke, and a rotor made of a permanent magnet in an opening formed in the stator and installed to rotate freely, and magnetically connecting the stator and the rotor. It consists of a plurality of magnetic pole pieces connected to the stator for installation, the connection position of the stator (10a, 10b) is to form a magnetic path around the space at the same time to install a magnetic force source, the thermal magnetic material is inserted into the magnetic path And a thermosensitive actuator characterized in that the opposite surfaces of the magnetic pole pieces 11-10 and 11-40 and the magnetic pole pieces 11-20 and 11-30 have different areas. A stator (10a, 10b, 10c) made of a magnetic material forming a three-part yoke, a rotor made of a permanent magnet in an opening formed in the stator and freely rotatable, and the stator and the rotor magnetically A thermostat actuator (11-1, 11-2, 11-4, 11-3) having a plurality of magnetic pole pieces connected to and installed on the stator for connection, between the stators 10a and 10b and the stator 10b. , 10c) are each fitted with a thermally sensitive magnetic material, and the stator 10a is integrally connected to a pair of magnetic pole pieces 11-1 and 11-4, and the gaps 36a and 36b are provided at a central position. Thermostat actuator, characterized in that installed. 24. The thermostat actuator according to claim 23, wherein a magnetomotive force is provided in the magnetic path of the stator (10a). 24. The thermostat actuator according to claim 23, wherein a compensating portion for self-balancing is provided in the path of the stator (10a). 27. The temperature actuator of claim 25, wherein the compensator is an air gap. 28. The thermostat actuator according to claim 25 or 26, wherein a predetermined air gap is provided between the stator for holding the thermosensitive magnetic material and the thermosensitive magnetic material, respectively. Two opposing magnetic pole pieces 44-1, 44-2, magnetic paths 10 for magnetically connecting the two magnetic pole pieces through one or more sub-air gaps 36a, 36b, and One or more thermosensitive magnetic members 45-1 and 45-2 whose magnetic properties change with temperature, and a thermosensitive actuator having a magnetic force source 46, between the two magnetic pole pieces 44-1 and 44-2. A thermostat actuator, wherein a main air gap is formed in the main air gap, and a rotor made of a permanent magnet rotating integrally with the drive shaft is disposed in the main air gap. A thermosensitive actuator having two magnetic pole pieces 44-1 and 44-2 opposed to each other via one sub-air gap 36, and a thermal magnetic material 45 inserted into the other end of the magnetic pole piece. A rectangular curved furnace 10-1 is formed by a thermally sensitive magnetic material, and a mover 47 made of permanent magnets is disposed in a linear space surrounded by the curved furnace, and at least one magnetic force source ( 46) is installed in the temperature actuator. 29. The temperature actuator according to claim 28, wherein the source of magnetic force is an electromagnet. 30. The thermostat actuator according to claim 29, wherein the magnetomotive power source is an electromagnet.