CN1228536C

CN1228536C - Temp controlled permanent-magnet delivery equipment

Info

Publication number: CN1228536C
Application number: CN 01102791
Authority: CN
Inventors: 韩春雷; 齐志学
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-19
Filing date: 2001-01-29
Publication date: 2005-11-23
Anticipated expiration: 2021-01-29
Also published as: CN1330216A

Abstract

The present invention discloses a fan temperature controlled torque transmission device of an automobile engine, which is composed of an active part and a passive part, wherein the active part comprises a drive shaft, a slide disc and a temperature sense casing, and the passive part comprises a passive disc, a bearing and a fan. The present invention realizes the torque transmission by using the magnetic transmission principle and uses the temperature characteristics of soft-magnetic temperature sensitive alloy material to operate a switching magnetic path to change working gas gap. Thereby, the variable multiple of the magnetic field intensity of the working gas gap is increased, the engagement and the disengagement of the active components and the passive components are realized to complete the automatic temperature control torque transmission.

Description

Temp controlled permanent-magnet delivery equipment

Technical field: the present invention relates to a kind of motor car engine fan temp controlled delivery device.

Background technique: during motor car engine work, too high or too low for temperature very big to its performance impact, for guarantee that motor turns round under the optimum working temperature state, require cooling fan of engine to change rotating speed with variation of temperature, improve or reduce cooling capacity, thereby the control motor is worked in the optimum working temperature scope.The temp controlled permanent-magnet delivery device is exactly the defeated device of turning round of temperature control that guarantees that motor is worked under optimum working temperature.

Existing automobile fan temp controlled delivery device mainly contains two kinds of silicon oil clutch and magnetic clutchs.Because magnetic clutch work needs outer gas-distributing motor, it is big to take up space, complex structure, and the cost height, price is expensive, generally is used on the limousine.What use on the homemade liberation CA141 automobile is silicon oil clutch, this clutch is made up of oil storage chamber and active chamber, separate with dividing plate between the oil pocket, oilhole is arranged on the dividing plate, the oilhole quilt is blocked with the elastic pressuring plate that helical bimetallic strip one end connects firmly, the helical bimetallic strip is installed in the front end of fan clutch, and as the temperature transducer of clutch, the hot air flow effect of engine radiator back is on it.When motor is being lower than when working under the optimum working temperature state, gas flow temperature is lower, elastic pressuring plate is blocked oilhole, do not have silicone oil in the active chamber, frictional force is short and small between the passive utmost point of the master of clutch, and the rotation slippage at the two poles of the earth is big, be in disengaged condition, cause to be installed in the passive fan of extremely going up and to slowly run, the cooling capacity of fan descends, and motor rises to optimum working temperature rapidly; When engine operating temperature is higher than optimum working temperature, bimetallic strip produces rotational deformation, drives elastic pressuring plate and rotates, and opens oilhole, make oil storage chamber silicone oil flow into active chamber, friction torque increases between main, the passive utmost point, and the two poles of the earth are rotated slippage and reduced, and are in engagement, the fan high speed rotating, cooling capacity increases, and makes engine temperature quickly fall to optimum working temperature, thereby realizes the automatic control purpose of engine operating temperature.Silicon oil clutch is simple in structure, and price is low, and shortcoming is the bimetallic strip malfunction rate height of temperature sensing part, causes clutch work unreliable, and because the sealing difficulty, silicone oil leaks more, greatly reduces the working life of clutch.

Take up space greatly in order to overcome magnetic clutch, complex structure, high and the silicon oil clutch silicone oil leakage loss of price, malfunction rate height, it is unreliable to work, problems such as the life-span is short, people are at development temperature control engaging and disengaging gear, application number be 91232570.4 utility model patent to disclose a kind of " permanent magnetism temperature-controlled fan clutch " its structure be tubular magnetic drives structure, form by interior ring outer shroud, interior ring is the active utmost point, outer shroud is the passive utmost point, is equipped with the several piece permanent magnet on the interior ring outer peripheral surface, forms working gas gap by iron polar yoke and the outer shroud inner peripheral surface that press-fits on the permanent magnet, constitute severally to magnetic pole, each iron polar yoke forms magnetic circuit mutually by pressing soft magnetism heat sensitive material toroidal surface thereon.This structure in the reality is because the inner and outer rings working gas gap can not change, and the permeance of the temperature-sensitive that places one's entire reliance upon alloy, air-gap field can't reach and change the multiplying power requirement, and clutch will often be in half disengagement half hitch and close state, and can't realize effective transmission of moment of torsion.

Summary of the invention: the objective of the invention is to provide a kind of temp controlled permanent-magnet delivery equipment, it is to realize the moment of torsion transmission by magnetic force, utilize the temperature characteristic of temperature-sensitive soft magnetic material to handle output and the disconnection that magnetic circuit is realized moment of torsion, finish automatically control of temperature, utilize the variable-operation air gap to guarantee working gas gap change of magnetic field strength multiplying power, thereby it is unreliable fundamentally to solve existing silicon oil clutch work, and silicone oil leaks, the problem that the life-span is short.

The object of the present invention is achieved like this, and this device is by initiatively part and passive part two-part are formed.Initiatively partly comprise transmission shaft, slider disc, three critical pieces of temperature-sensitive cover, its temperature-sensitive cover is connected with transmission shaft by key respectively with slider disc, cooperating between slider disc and the transmission shaft for being slidingly matched, symmetry is inlaid with soft magnetism temperature-sensitive alloy block on the temperature-sensitive cover, the relative side position of the slider disc permanent magnets that is being connected accordingly with the temperature-sensitive cover, the opposite side of slider disc be connected in, in, outer three cirque body, interior ring and outer shroud are made of the iron polar yoke that is connected in the magnet ring piece on the slider disc and be connected on the magnet ring piece, and middle ring is a soft magnetism temperature-sensitive alloy cirque body; Passive part comprises driven disc, bearing and three critical pieces of fan, and driven disc is connected on the transmission shaft by bearing, and fan is attached on the driven disc; Initiatively have a variable-operation air gap clearance between part and the passive part, interstice coverage is 0-3mm.

In on the slider disc, in, the cylindrical ring body also can adopt other two kinds of embodiments, promptly cirque body can be made into several tile-shaped structures of uniform segmentation and make several along the circumferential direction uniform block structures.

The core idea of transmission principle is: realize the moment of torsion transmission with the magnetic drives principle, handle the switching magnetic circuit with the temperature characteristic of soft magnetism temperature-sensitive alloy material, change the working gas gap gap, thereby improve the multiple of working gas gap change of magnetic field strength, realize engagement and disengagement main, passive components, finish temperature and control defeated turning round automatically.

The present invention is owing to adopted above-mentioned structure to have the following advantages:

1, simple in structure, need not to change taking up room of original clutch.

2, switch magnetic circuit with soft magnetism temperature-sensitive alloy temperature characteristic, can not produce malfunction, make its stable performance.

3, working gas gap is variable, guarantees that the variation multiplying power of air-gap field intensity is enough, reliable operation.

4, use the magnetic drives moment of torsion, overcome silicon oil clutch silicone oil and reveal, the magnetic clutch fault, long service life is difficult for breaking down.

Description of drawings:

Fig. 1 is a temp controlled permanent-magnet delivery equipment overall structure schematic representation.

Fig. 2 cuts open schematic representation for temp controlled permanent-magnet delivery equipment temperature-sensitive cover structure A-A.

Fig. 3 is a temp controlled permanent-magnet delivery equipment slider disc structural representation.

Fig. 4 is that temp controlled permanent-magnet delivery equipment slider disc structure A is to perspective view.

Fig. 5 is that temp controlled permanent-magnet delivery equipment slider disc structure B is to perspective view.

Fig. 6 be on the temp controlled permanent-magnet delivery equipment slider disc in, in, the cylindrical ring body adopts a tile-shaped example structure schematic representation of segmentation.

Fig. 7 be on the temp controlled permanent-magnet delivery equipment slider disc in, in, the cylindrical ring body adopts a tile-shaped example structure C of segmentation to perspective view.

Fig. 8 on the temp controlled permanent-magnet delivery equipment slider disc, in, the cylindrical ring body adopts another example structure schematic representation of uniform bulk.

Fig. 9 on the temp controlled permanent-magnet delivery equipment slider disc, in, the cylindrical ring body adopts another example structure D of uniform bulk to perspective view.

Embodiment:

Shown in Figure 1: this device is by initiatively part and passive part two-part are formed.Initiatively partly comprise transmission shaft 1,

slider disc

2,3 three critical pieces of temperature-sensitive cover, temperature-sensitive cover 3 on it symmetry be inlaid with soft magnetism temperature-sensitive alloy block 4 (as shown in Figure 2), temperature-sensitive cover 3 is connected with transmission shaft 1 by key 5, slider disc 2 is connected with transmission shaft 1 by feather key 6, and for being slidingly matched, slider disc 2 and temperature-sensitive cover 3 relative side positions and alloy block 4 permanent magnets 7 that is being connected accordingly, in the side that slider disc 2 faces toward driven disc 8 is being connected, in, outer three cirque body 9,10,11, inner ring body 9 constitutes by being connected in magnet ring piece 12 on the slider disc 2 and the iron polar yoke 13 that is connected on the permanent-magnetic clamp piece 12, (as shown in Figure 3) outer ring body 11 constitutes (as shown in Figure 3) by being connected in magnet ring piece 14 on the slider disc 2 and the iron polar yoke 15 that is connected on the permanent-magnetic clamp piece 14, and middle ring body wall 10 is soft magnetism temperature-sensitive alloy cirque body.

In Fig. 6,7 and 8,9 has provided on the slider disc, in, other two kinds of embodiments of cylindrical ring body 9,10,11, be that cirque body is made into several tile-shaped structures of uniform segmentation (shown in Fig. 6,7) and makes several along the circumferential direction uniform bulks (shown in Fig. 8,9).

Passive part comprises driven disc 8, bearing 16 and 17 3 critical pieces of fan, and driven disc 8 is connected on the transmission shaft 1 by bearing 16, and fan 17 is connected on the driven disc 8.Structural feature is: can slide on transmission shaft 1 because of slider disc 2, so have a variable gap between slide member upper ring body end face and the driven disc 8, interstice coverage is 0-3mm, and we cry this gap is working gas gap 18.

Transmission principle: when transmission shaft 1 rotated, slider disc 2, temperature-sensitive cover 3 rotated with axle 1, and driven disc 8 drives driven discs 8 rotations by the magnetic force coupling of 8 of slider disc 2 and driven discs by slider disc 2.Its temperature control magnetic drives principle is, with the strong magnetic force transmitting torque of permanent magnet, with near soft magnetism heat sensitive material magnetic induction intensity Curie point characteristic jumpy takes place and switch magnetic circuit, guarantee the reliability of slider disc 2, driven disc 8 combinations and disengaging with the variation enhancing air-gap field Strength Changes multiplying power in working gas gap gap.

Have three magnetic circuit I, II, III in the structure shown in Figure 1 simultaneously, magnetic circuit I is at interior ring permanent magnet blocks 12, interior ring iron polar yoke 13, middle ring soft magnetism temperature-sensitive alloy cirque body 10, outer shroud iron polar yoke 15, outer shroud permanent magnet blocks 14, the slider disc 2 inner closed magnetic paths of forming; Magnetic circuit II is the closed magnetic path of forming between interior ring permanent magnet blocks 12, interior ring iron polar yoke 13, working gas gap 18, driven disc 8, outer shroud iron polar yoke 15, outer shroud permanent magnet blocks 14, slider disc 2; Magnetic circuit III is the closed magnetic path of forming between the soft magnetism temperature-sensitive alloy block 4 inlayed on the temperature-sensitive cover 3 and the corresponding with it permanent magnet blocks 7 that is connected on the slider disc 2.When temperature is lower than 60-65 ℃ of soft magnetism temperature-sensitive alloy material Curie point Tc temperature, alloy cirque body 10 has very high permeance, magnetic circuit I is strengthened, it is very weak that magnetic circuit II becomes, slider disc 2 is very weak with driven disc 8 working gas gaps 18 magnetic intensities, magnetic attraction descends, and slider disc 2 is in basic disengaged condition with driven disc 8.Meanwhile alloy block 4 also has very high permeance; magnetic circuit III is very strong; attraction force is very big between alloy block 4 and the permanent magnet blocks 7; pulling slider disc 2 is slided; strengthened the gap of working gas gap 18; air-gap field intensity is reduced significantly, guarantee that slider disc 2 and driven disc 8 throw off no moment of torsion fully and export.When temperature reaches 60-65 ℃ of soft magnetism temperature-sensitive alloy material Curie point Tc temperature; alloy block 4 magnetic conduction abilities are very low; it is very weak that magnetic circuit III becomes; attraction force disappears substantially between alloy block 4 and the permanent magnet blocks; alloy cirque body 10 has also lost high permeance at this moment; magnetic circuit I is very weak; magnetic circuit II is strengthened; working gas gap 18 magnetic intensities are very strong, and attraction force increases between the driven disc 8, and the pulling slider disc is slided; make working gas gap 18 gap smaller; magnetic intensity further strengthens, and guarantees slider disc 2 and driven disc 8 positive engagement, realizes defeated turning round.

Claims

1, a kind of temp controlled permanent-magnet delivery equipment, it is characterized in that: this device is by initiatively part and passive part two-part are formed, initiatively partly comprise transmission shaft (1), slider disc (2), (3) three parts of temperature-sensitive cover, its temperature-sensitive cover (3) is connected with transmission shaft (1) by key (5), (6) respectively with slider disc (2), cooperating for being slidingly matched between slider disc (2) and the transmission shaft (1); Passive part comprises driven disc (8), bearing (16) and (17) three critical pieces of fan, and driven disc (8) is connected on the transmission shaft (1) by bearing (16), and fan (17) is connected on the driven disc (8);

Be inlaid with soft magnetism temperature-sensitive alloy block (4) on the described temperature-sensitive cover (3), relative side position of slider disc (2) and alloy block (4) permanent magnets (7) that is being connected accordingly with temperature-sensitive cover (3), in the opposite side of slider disc (2) is being connected, in, outer three cirque body (9), (10), (11), inner ring body (9) and outer ring body (11) are made of the iron polar yoke (13), (15) that are connected in magnet ring piece (12), (14) on the slider disc (2) and be connected on the magnet ring piece, and middle ring body (10) is a soft magnetism temperature-sensitive alloy cirque body.

2, a kind of temp controlled permanent-magnet delivery equipment according to claim 1 is characterized in that: initiatively have a variable-operation air gap clearance (18) between part and the passive part, interstice coverage is 0-3mm.

3, a kind of temp controlled permanent-magnet delivery equipment according to claim 1 is characterized in that: in described, in, cylindrical ring body (9), (10), that (11) also can be made into segmentation is tile-shaped along the circumferential direction uniform.

4, a kind of temp controlled permanent-magnet delivery equipment according to claim 1 is characterized in that: in described, in, cylindrical ring body (9), (10), that (11) also can be made into bulk is along the circumferential direction uniform.

5, a kind of temp controlled permanent-magnet delivery equipment according to claim 1 is characterized in that: described soft magnetism temperature-sensitive alloy block (4) and soft magnetism temperature-sensitive alloy cirque body (10) Curie point temperature are lower than and equal 65 ℃.