CN1071844C - Positive-displacement rotary tilted plate type compressor with improved rotary tilted plate supporting device - Google Patents
Positive-displacement rotary tilted plate type compressor with improved rotary tilted plate supporting device Download PDFInfo
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- CN1071844C CN1071844C CN97190322A CN97190322A CN1071844C CN 1071844 C CN1071844 C CN 1071844C CN 97190322 A CN97190322 A CN 97190322A CN 97190322 A CN97190322 A CN 97190322A CN 1071844 C CN1071844 C CN 1071844C
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- swash plate
- rotation swash
- hole
- live axle
- rotation
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Abstract
The present invention relates to a rotary slant-board type compressor capable of forming the capacity, in which a sleeve-barrel component (18) which can move along an axial direction on a driving shaft (6) and can change following the inclination change of a rotary slant board (11) is arranged between a through hole (20) of the rotary slant board (11) and the driving shaft (6). The through hole (20) is provided with an axis clamping the driving shaft (6) on the inner peripheral part, and a support part (20a) which is at the opposite side of a hinged mechanism (K) and is partially connected with the sleeve barrel, and the inclination change of the rotary slant board (11) in the whole control range is permitted by being supported by the support part (20a); thereby, the corresponding slide range is reduced between the support part (20a) formed on the inner peripheral part of the through hole (20) of the rotary slant board (11) and the sleeve barrel so that the wear between the two parts can be restrained. Furthermore, the action of the flexible inclination change of the rotary slant board (11) can be ensured. In addition, the through hole (20) of the rotary slant board (11) is provided with the inner diameter surface (20b) which is connected with the peripheral surface of the sleeve barrel (18) and is provided with the minimum inclination of the rotary slant board (11).
Description
Technical field
The present invention relates to be used for the capacity variable type rotary slope plate type compressor of Vehicular air-conditioning apparatus, be particularly related to a kind of improvement structure that can realize rotating swash plate displacement action with simple rotation swash plate bearing device neatly, this rotation swash plate displacement action comprises with respect to the inclination angle perpendicular to the variable rotation swash plate in the angle of inclination on the axis plane of compressor rotating driveshaft and changes and the shift in position of axial direction.
Prior art
In prior art, by the inclination angle displacement of rotating swash plate (bonded block that comprises rotation swash plate and non-rotating wobble plate) piston stroke is changed, the compressor of controlling the discharge capacity thus changeably has a lot.For example, Japanese patent gazette spy drives the capacity variable type rotation swash plate compressor that discloses for clear 62-87678 number, be to be purpose to simplify rotation swash plate bearing device, as shown in figure 11, it is characterized in that in crank chamber 42, make live axle 43 connect the protuberance 52 of rotation swash plate 45, on this protuberance 52, form through hole 55.The part of this through hole 55 contacts with live axle 43, limit its radial position, and allow the angle change of rotation swash plate, the slide block and the pivot pin that use have before been saved always, lower side curved surface 55b in the through hole 55 of rotation swash plate 45 contacts by the part with live axle 43 and is guided, thereby keeps certain displacement track.
But, in this existing compressor, because the effect of compression counter-force, act on the moment of the true dip direction of rotation swash plate 45, though the support mechanism of involved long shape hole 53 and pin 53a and side, the below 55b that contacts with live axle 43 bear, but when the displacement of the inclination angle of rotation swash plate 45,, this curved surface 55b slides contiguously in the prespecified range interior lines of live axle 43 while bearing load.In addition, owing to rotation swash plate 45 constructional reasons, on the direction vertical with above-mentioned true dip direction, also acting on moment based on the compression counter-force, though this moment is partly supported by the minor axis of the slotted hole that forms through hole 55, but the front and back minor axis portion ora terminalis that is present in diagonal positions when the inclination angle displacement of rotation swash plate 45, and still similarly produces the slip that line contacts between the live axle 43.
And, from above-mentioned existing compressor as seen, the bearing device of rotation swash plate 45 is present in the crank chamber 42 individually, compare with the structure of equipping the compound support mechanism of pairing left and right in the both sides that clip live axle (for example seeing that the Japanese patent gazette spy opens flat 6-288347 number), the ability to bear of moment extremely a little less than, must rise with pressure on the face of the sliding contact of live axle 43.
Therefore, slide when carrying out repeatedly with long sliding distance when live axle 43 contacts with the line of through hole 55, make both sides produce local wearing and tearing, these wearing and tearing are correctly and the neatly reasons of inclination angle displacement that impair rotation swash plate 5.
On the other hand, the minimum angle-of-incidence that keeps the rotation swash plate of capacity variable type rotation swash plate compressor accurately is very difficult (this point is opened among the clear 62-87678 above-mentioned spy and described in detail), if minimum angle-of-incidence is too small, then cause from refrigerating circuit badly, reduce the reliability of refrigeration system to the oil return of compressor.If minimum angle-of-incidence is excessive, then the minimum capacity of compressor increases, and the cold air of refrigerated area excessively produces, and the problems such as evaporimeter frosting in the refrigerating circuit perhaps occur.
Brief summary of the invention
Therefore, the objective of the invention is to eliminate all shortcomings in the existing capacity variable type rotary slope plate type compressor.
Another object of the present invention provides a kind of capacity variable type rotary slope plate type compressor that has rotation swash plate bearing device, this rotation swash plate bearing device guarantees to rotate the flexible displacement action of swash plate because of in-built improvement, and the life-span of rotation swash plate and live axle is increased.
Another purpose of the present invention provides a kind of capacity variable type rotary slope plate type compressor that has rotation swash plate bearing device, this rotation swash plate bearing device is in the assembling process of compressor, do not influence the rotation swash plate and introduce the assembling operation of inside, crank chamber, and can improve the minimum angle-of-incidence setting accuracy of the rotation swash plate that is assembled in the crank chamber.
A further object of the present invention provides a kind of capacity variable type rotary slope plate type compressor that has the rotation swash plate bearing device of manufacture cost minimum.
Capacity variable type rotary slope plate type compressor of the present invention, it has cylinder block, front case, live axle, rear case, rotor, rotation swash plate, piston;
Cylinder block has several cylinder-bore that are arranged side by side, to constitute the external frame of compressor;
The inside of front case forms the front end of crank chamber and closed cylinder body;
Live axle is by the supporting of cylinder block and front case, and has axis and can be around this axis rotation;
Rear case has suction chamber and discharges the rear end of chamber and closed cylinder body;
Rotor is fixed on the live axle in the crank chamber;
The rotation swash plate be installed in live axle around, supporting to variable pitch, and be connected with rotor by linkage; Piston with the rotation swash plate be connected, and in cylinder-bore straight line motion;
It is characterized in that,
The rotation swash plate has a through hole;
Folder is being established housing part between through hole and live axle, and the inclination angle that this housing part is accompanyed or follow the rotation swash plate changes, and can move along axial direction on live axle;
The rotation swash plate has support, this support clips the axis of the live axle in the inner peripheral surface part of limited hole, engage partly with housing part at the linkage opposite side, the rotation swash plate of by this support part supports is allowed at The whole control scope leaning angle to change.
The through hole of rotation swash plate preferably has 2 bore portions that are interconnected of being determined by two different inner diameters faces, these 2 bore portions allow the rotation swash plate with respect to support in the inclination angle of axle direction both sides transition activities.
Above-mentioned rotation swash plate has and is formed on the end-to-end joint part of the flange engages on the housing part at the end near through hole, this end-to-end joint part be designed to rotate the swash plate inclination angle change have nothing to do and support between the constant substantially shape of axial distance.
Determine one side aperture surface and socket joint in 2 different inner diameters faces of two bore portions of above-mentioned through hole, set the minimum angle-of-incidence of rotation swash plate with this.
The simple declaration of accompanying drawing
With reference to following accompanying drawing above-mentioned and other purposes of the present invention, characteristics and advantage will become more obvious in the description by preferred embodiment, wherein:
Fig. 1 is the whole profile diagram according to the volume-variable rotary slope plate type compressor of one embodiment of the invention;
Fig. 2 is the major component sectional view of the rotation swash plate bearing device in the expression compressor shown in Figure 1, and wherein expression rotation swash plate is in an inclination maximum state;
Fig. 3 is the major component sectional view of the rotation swash plate bearing device in the expression compressor shown in Figure 1, and wherein expression rotation swash plate is in a minimum angle-of-incidence state;
Fig. 4 is the important in-built amplification profile diagram of presentation graphs 2, rotation swash plate shown in Figure 3;
Fig. 5 is the whole profile diagram of expression according to the capacity variable type rotary slope plate type compressor of another embodiment of the present invention;
Fig. 6 is the major component sectional view of the rotation swash plate bearing device in the expression compressor shown in Figure 5, and it is the same view of Fig. 2 that is in an inclination maximum state with expression rotation swash plate;
Fig. 7 is the major component sectional view of the rotation swash plate bearing device in the expression compressor shown in Figure 5, and it is the same view of Fig. 3 that is in a minimum angle-of-incidence state with expression rotation swash plate;
Fig. 8 is the important in-built amplification profile diagram of presentation graphs 6, rotation swash plate shown in Figure 7;
Fig. 9 is the major component sectional view of a linkage assembling process in the rotation swash plate bearing device of explanation compressor shown in Figure 5;
Figure 10 is the schematic representation that being formed on support and the relative displacement of sleeve rotation swash plate on of expression in the compressor shown in Figure 5; With
Figure 11 is the sectional view of a rotation swash plate bearing device of expression capacity variable type rotary slope plate type compressor of the prior art.
In the accompanying drawing, same label is represented same parts or same parts.
Implement optimum scheme of the present invention
Among Fig. 1, the capacity variable type rotary slope plate type compressor according to one embodiment of the invention is shown, wherein, be bonded on to front case 2 sealings the forward end of cylinder block 1, and rear case 3 is bonded on the rear end side of this cylinder block by valve plate 4 with sealing.Holding the live axle 6 with longitudinal axis in the crank chamber 5 that is formed by cylinder block 1 and front case 2, live axle 6 is being supported and can rotated around axis by bearing 7a, 7b.In cylinder block 1, around live axle 6, several cylinder-bore 8 are set at certain intervals each other, each cylinder-bore 8 in, distinguish slidably setting-in and piston 9.
In crank chamber 5, rotor 10 is contained on the live axle 6 regularly, is supporting by suitable bearing 19 between it and the front case 2; And rotation swash plate 11 by through hole 20 setting-ins in the part of the live axle 6 at rotor 10 rears, between this through hole 20 and live axle 6, clamp sleeve 18 is being set, to constitute the rotation swash plate bearing device that rotates swash plate 11 with linkage common actions described later and supporting.
The through hole 20 of rotation swash plate 11 forms tortuous long hole shape, clip the axis of live axle 6, pivot Y is set in the rotation swash plate zone with the outside of the above-mentioned sleeve 18 of aftermentioned linkage K opposite side, allows that rotation swash plate 11 is the center with this pivot Y and with respect to the plane perpendicular to the axis of live axle 6 the inclination angle displacement takes place in the The whole control scope.As shown in Figure 4, through hole 20 forms local the contact with the outer circumferential face of sleeve 18, with the radial shift of restriction rotation swash plate 11.In more detail, in the plane of the axis that comprises live axle 6 and the upper dead center position of rotation swash plate 11, the support 20a that limits the radial position of this rotation swash plate is that the center forms roundlet arcuation part with pivot Y, the aperture surface 20b of the minimum angle-of-incidence side of tortuous through hole 20 goes up and forms 10 °～15 ° inclination angle [theta] more than needed 1, and on the aperture surface 20c of inclination maximum side, forming 1 °～2 ° inclination angle [theta] more than needed 2, rotation swash plate 11 can be done the inclination angle displacement towards minimum, inclination maximum position effectively.In addition, two sides at the through hole 20 that rotates swash plate 11 along with the cutting of tortuous slotted hole, form smooth internal face 20d, can limit the displacement action of undesirable rotation swash plate 11.
As shown in Figure 1, peripheral part butt at rotation swash plate 11 guide plate 14,14, this guide plate 14,14 has the hemisphere portion as bindiny mechanism, the hemispherical portion of these guide plates 14,14 does not engage with the spherical bearing face that forms on piston 9, like this, but with several pistons 9 to-and-fro motion that engage of rotation swash plate 11 be contained in each cylinder-bore 8.
Be equipped with the carriage 15 of a side component that constitutes linkage K in the front face side of rotation swash plate 11, the cardinal extremity of guide finger 16 is fixed on this carriage 15, and its front end forms bulb 16a.
At the top of rotor 10 rear side,, relatively be equipped with the supporting arm 17 of the opposite side parts that constitute linkage with guide finger 16 along the axial direction of live axle 6.At the front end of supporting arm 17, connect ground and form pilot hole 17a, pilot hole 17a is parallel to the face by the upper dead center decision of the axis of live axle 6 and rotation swash plate 11, and gets over tilted rearward the closer to axis.The center line of the pilot hole 17a of this inclination is set like this: during the inclination angle of rotation swash plate 11 that promptly is fitted into the bulb 16a constraint of this pilot hole 17a changed, the upper dead center position of each piston 9 changed hardly.
Space in the rear case 3 is divided into suction chamber 30 and discharges chamber 31 with state of isolation, be formed with suction port 32 and the exhaust port 33 corresponding on the valve plate 4 with cylinder-bore 8, each pressing chamber that between valve plate 4 and each piston 9, surrounds respectively by corresponding suction port 32 and exhaust port 33 with suction chamber 30 and discharge chamber 31 and be connected.Be provided with the suction valve (not shown) that opens and closes suction port 32 along with the reciprocating action of piston 9 at each suction port 32, be provided with the expulsion valve (not shown) of known configuration at exhaust port 33, on one side this expulsion valve along with the reciprocating action of each piston 9 on one side the amount of starting of defining baffle 34 open and close exhaust port 33.In rear case 3, be equipped with the unshowned control valve of regulating crank chamber 5 pressure.
The drive force rotation that the capacity variable type rotary slope plate type compressor of above-mentioned structure, live axle 6 are introduced from the outside, the starting refrigeration agent carries out compression.At this moment, when rotation swash plate 11 rotates by rotor 10 with live axle 6, by guide plate 14,14 each piston 9 to-and-fro motion in corresponding cylinder hole 8, like this, refrigerant gas is inhaled into compression chamber from suction chamber 30, is discharged to after refrigerant gas is compressed to discharge chamber 31.Be discharged to the discharge capacity of the refrigerant gas of discharging chamber 31, the pressure in the crank chamber 5 at that time regulated control by control valve.
That is, at state shown in Figure 2, rise if the pressure in crank chamber 5 is regulated because of the pressure of control valve, the back-pressure that then acts on piston 9 rises, and the inclination angle of rotation swash plate 11 diminishes.Promptly, the bulb 16a that constitutes the guide finger 16 of linkage K counterclockwise rotates in pilot hole 17a, and along pilot hole 17a from outer direction towards sliding near the axis side direction of live axle 6, simultaneously, the 20a of arc supporting portion of rotation swash plate 11 is the center with pivot Y, rotate while keeping engaging, and move to the compressor rear end side along the axis of live axle 6 with sleeve 18 as rotation swash plate bearing device.Like this, the inclination angle of rotation swash plate 11 reduces and becomes state shown in Figure 3, with the stroke of piston 9 correspondingly discharge capacity reduce.
Otherwise, at state shown in Figure 3,, reduces the pressure in crank chamber 5 if regulating because of the pressure of control valve, and the back-pressure that then acts on piston 9 descends, and the inclination angle of rotation swash plate 11 increases.Promptly, the bulb 16a clockwise direction in pilot hole 17a that constitutes the guide finger 16 of linkage K rotates, and slide towards axis side direction away from live axle 6 along pilot hole 17a from interior direction, simultaneously, the 20a of arc supporting portion of rotation swash plate 11 rotates with engaging of sleeve 18 while keeping, and moves along the axial direction of live axle 6.Like this, the inclination angle of rotation swash plate 11 increases and becomes state shown in Figure 2, with the correspondingly discharge capacity increase of stroke increase of piston 9.
Like this, the inclination angle of rotation swash plate 11 is by detecting the action control by control valve of heat load in the refrigerating circuit, when the inclination angle of this rotation swash plate 11 changes, as mentioned above, support 20a in the through hole 20 is while keeping mobile on axial direction with sleeve 18 butts, the sleeve 18 that is subjected to the elastic force effect of helical spring 12 frequently and engages with rotation swash plate 11 is followed the form of rotating swash plate 11, similarly moves in live axle 6 upper edge same axis directions.Its result, the actual sliding distance of support 20a only be the sleeve 18 that engages of abutting part 11a with support 20a between the minimum relative displacement that produces.That is, the difference (D-d) of the axial distance of end-to-end joint part 11a when Fig. 2, minimum and maximum inclination angle shown in Figure 3 and support 20a reduces.Its result, mutually the skimming wear of the two of butt owing to be transformed to keeps the sliding action that contact with sleeve section, so, preventing the wearing and tearing of live axle effectively, swash plate inclination angle transition activities is flexibly rotated in assurance effectively.
In the rotation swash plate bearing device of present embodiment, as shown in Figure 3, the spot-facing face 11b that is formed on through hole 20 rear portions of rotation swash plate 11 forms the structure of restriction minimum angle-of-incidence when being bonded on snap ring 13 (see figure 1) butts on the live axle 6.
Bottom at rotation swash plate 11 is formed with front-end face 11c, and this front-end face 11c is with respect to front and back weeks face tilt of rotation swash plate, and the ear end face 10a of this front-end face 11c and rotor 10 is during with the surface contact state butt, and as shown in Figure 2, the inclination maximum of swash plate 11 is rotated in restriction.
When the inclination angle that rotates swash plate 11 during this time changes, rotation swash plate 11 is with respect to the total angle variable quantity of sleeve 18, as mentioned above, the surplus capacity that θ 1, θ 2 are arranged respectively when minimum angle-of-incidence, inclination maximum, especially the inclination angle [theta] more than needed 1 (10 °-15 °) that is provided with in minimum angle-of-incidence, in the process of rotation swash plate 11 assembling in the crank chamber 5, make the insertion of the past pilot hole 17a of bulb 16a easy, can make the assembling operation simplification.
Minimum angle-of-incidence state at rotation swash plate 11 shown in Figure 3, the end-to-end joint part 11a of the rotation swash plate 11 that often docks with the flange 18a of sleeve 18 and the axial distance that is provided between the support 20a of rotation swash plate inside are D, at inclination maximum state shown in Figure 2, this same distance is d, when the shape of design end-to-end joint part 11a, consider to make above-mentioned D approximate d, for example, if when design, calculate, select the inclination angle of this end-to-end joint part 11a in advance with respect to rotation swash plate outer circumferential face, make (D-d) approximate zero, then can ignore the slip between support 20a and the sleeve 18.
In the foregoing description, illustrated that sleeve 18 accompanys or follow the formation that the gamut that changes in rotation swash plate 11 inclination angles moves on live axle 6.But also can make following structure, promptly, for example make rotation swash plate 11 in the process that the small inclination direction changes, the boundary that the retinue along live axle 6 of sleeve 18 moves is installed in snap ring 13 restrictions on the live axle 6, the minimum angle-of-incidence position of rotation swash plate 11 itself, be folded in and cylinder block 1 between for example from the outstanding suitably support restrictions such as part of cylinder block 1.
In addition, give sleeve accompany or follow power that rotation swash plate 11 inclination angles change, by the pressure exerting arrangement that helical spring 12 constitutes, also can be configured in the front and back either side of sleeve 18.In addition, also can a pair of snap ring in front and back be installed, its front-back with rotation swash plate 11 is engaged, make sleeve 18 and change the structure that correspondingly on live axle 6, moves with the inclination angle that rotates swash plate 11 frequently at the peripheral part of sleeve 18.Like this, can dispense helical spring 12 as moving element.
From the foregoing description as can be known, in the rotation swash plate bearing device of Fig. 1 capacity variable type rotary slope plate type compressor extremely shown in Figure 4, make the moment of rotation swash plate inclination based on compression reaction force, though bear by the sleeve that engages with rotation swash plate support, but, moving of the support of rotation swash plate that changes along with the inclination angle of rotation swash plate own, also identical drive axis direction moves sleeve in the live axle upper edge, the actual sliding distance of above-mentioned support be reduced into sleeve between the minimum relative displacement that produces, so, the skimming wear of the two that engages, the wearing and tearing of moving the live axle that produces because of the face contact of sleeve are also effectively prevented, can realize rotating the transition activities of inclination angle flexibly of swash plate.
And, in the compressor that adopts single linkage, pivot Y reaches and the axial moment of live axle 6 axis normal directions becomes quite big although the inclination angle change of rotation swash plate acts on, but, because the rotation swash plate is little with the relative displacement between the sleeve, so, similarly can prevent to rotate the wearing and tearing that produce between the through hole lateral margin of swash plate and the sleeve.
Below, the capacity variable type rotary slope plate type compressor of another embodiment of the present invention is described with reference to Fig. 5 to Figure 10.Among the figure with Fig. 1 to Fig. 4 in identical label represent same or identical parts.
Among Fig. 5, the unitary construction of this compressor is except rotation swash plate bearing device, and all the other and compressor embodiment illustrated in fig. 1 are basic identical.Therefore, except the rotation swash plate bearing device of compressor, referring to preceding embodiment, its explanation is omitted about all the other internal structures.
In the rotation swash plate bearing device of the compressor of present embodiment, removed being used to the foregoing description from live axle 6 and limited snap ring 13 (see figure 1)s of rotating swash plate 11 minimum angle-of-incidences.In addition, the structure of the tortuous slotted hole of the through hole 20 of formation rotation swash plate 11 is also different.That is, one side aperture surface of through hole 20 by with the engaging of sleeve 16, the minimum angle-of-incidence of restriction rotation swash plate 11 accurately.And by extracting sleeve, the play of the expansion that produces between the aperture surface of through hole 20 and live axle is partly allowed linkage chimericly is connected required the reverse of rotation swash plate and fascinates, so rotation swash plate 11 can carry out smoothly toward the assemblings in the crank chambeies 5.
As shown in Figure 5 and Figure 8, the through hole 20 of rotation swash plate 11 forms tortuous long hole shape, and what this through hole 20 was allowed rotation swash plate 11 is that the inclination angle of center in the The whole control scope changes with pivot Y.Above-mentioned pivot Y be set in the axis that clips live axle 6, with the rotation swash plate inner region in sleeve 18 outsides of linkage K opposite side in.As shown in Figure 8, it is the slightly circular arc at center that support 20a forms with this pivot Y, this support 20a and sleeve 18 local engagement, the radial position of restriction rotation swash plate 11, specifically, restriction comprises the radial position in the plane of the axis of live axle 6 and rotation swash plate 11 upper dead center positions.One side aperture surface 20b of tortuous slotted hole by with the engaging of sleeve 18 outer circumferential faces, as the setting face of setting rotation swash plate 11 minimum angle-of-incidences.On the another side aperture surface 20c, the mating face 11c that is located at rotation swash plate 11 front end bottoms contacts with surface contact state with the ear end face 10a of rotor and the inclination maximum that rotates swash plate 11 when being set, and has the yielding angle θ that avoids with sleeve 18 interference.Two sides of through hole 20, with earlier figures 1 to Fig. 4 embodiment similarly, form smooth restriction face 20d.In the present embodiment, there is not the spot-facing 11b of rotation swash plate 11 rear end side in the previous embodiment.
In the front face side of rotation swash plate 11, the prominent carriage 15 of establishing a side component that constitutes linkage K, the cardinal extremity of guide finger 16 is fixed on this carriage 15, and front end forms bulb 16a.
In the upper back side of rotor 10, along the axial direction of live axle 6, with the relatively prominent supporting arm 17 of establishing the opposite side parts that constitute linkage of guide finger 16.At the front end of this supporting arm 17, connect ground and form pilot hole 17a, this pilot hole 17a is parallel to the face by the upper dead center decision of the axis of live axle 6 and rotation swash plate 11, and gets over tilted rearward the closer to axis.The center line of the pilot hole 17a of this inclination is set like this: promptly, during the inclination angle of rotation swash plate 11 that is embedded into the bulb 16a constraint of this pilot hole 17a changed, the upper dead center position of each piston 9 changed hardly.
The drive force rotation that the capacity variable type rotary slope plate type compressor of above-mentioned structure, live axle 6 are introduced from the outside, the starting refrigeration agent carries out compression.At this moment, when rotation swash plate 11 rotates by rotor 10 with live axle 6, by guide plate 14,14 each piston 9 to-and-fro motion in corresponding cylinder hole 8, like this, refrigerant gas is inhaled in the pressing chamber from suction chamber 30, is discharged to after refrigerant gas is compressed to discharge chamber 31.Be discharged to the discharge capacity of the refrigerant gas of discharging chamber 31, the pressure in the current crank chamber 5 regulated control by control valve.
That is, at state shown in Figure 6, rise if the pressure in crank chamber 5 is regulated because of the pressure of control valve, the back-pressure that then acts on piston 9 rises, and the inclination angle of rotation swash plate 11 diminishes.Promptly, the bulb 16a that constitutes the guide finger 16 of linkage K counterclockwise rotates in pilot hole 17a, and slide near the axis side direction of live axle 6 along pilot hole 17a from outer direction, simultaneously, the 20a of arc supporting portion of rotation swash plate 11 is the center with pivot Y, rotate while keeping engaging with sleeve 18 as rotation swash plate bearing device, and rearward mobile along the axis of live axle 6.Like this, the inclination angle of rotation swash plate 11 reduces and becomes state shown in Figure 7, with the stroke of piston 9 correspondingly discharge capacity reduce.
Otherwise, at state shown in Figure 7,, reduces the pressure in crank chamber 5 if regulating because of the pressure of control valve, and the back-pressure that then acts on piston 9 descends, and the inclination angle of rotation swash plate 11 increases.Promptly, the bulb 16a of guide finger 16 clockwise direction in pilot hole 17a rotates, and slide away from the axis side direction of live axle 6 along pilot hole 17a from interior direction, simultaneously, the 20a of arc supporting portion of rotation swash plate 11 rotates with engaging of sleeve 18 while keeping, and moves on the axial direction of live axle 6.Like this, the inclination angle of rotation swash plate 11 increases and becomes state shown in Figure 6, with the correspondingly discharge capacity increase of stroke increase of piston 9.
Like this, the inclination angle of rotation swash plate 11 is controlled by the action of control valve by detected refrigerating circuit heat load, when the inclination angle of this rotation swash plate 11 changes, as mentioned above, support 20a in the through hole 20 moves while keeping engaging to axial direction with sleeve 18, usually be subjected to helical spring 12 elastic force, with the sleeve 18 that engages of rotation swash plate 11, follow the form of rotating swash plate 11, similarly move in live axle 6 upper edge same axis directions.The minimum relative displacement that produces between its result, the sleeve 18 that the actual sliding distance of support 20a is only engaged by end-to-end joint part 11a and support 20a.That is, with previous embodiment similarly, the difference (D-d) of end-to-end joint part 11a when Fig. 6, minimum and maximum inclination angle shown in Figure 7 and the axle direction distance of support 20a reduces.Its result, mutually the skimming wear of the two of butt owing to be transformed to keeps the sliding action that contact with sleeve section, so, preventing the wearing and tearing of live axle effectively, swash plate inclination angle transition activities is flexibly rotated in assurance effectively.
During the minimum angle-of-incidence state of rotation swash plate 11 shown in Figure 7, axial distance between end-to-end joint part 11a and the support 20a is D, when inclination maximum state shown in Figure 6, this same distance is d, when the shape of design end-to-end joint part 11a, if consider to make above-mentioned D approximate d, perhaps with shown in Figure 10 be that the arc length r θ at center is chosen as and equals above-mentioned sliding distance (D-d) with pivot Y, then can ignore the slip between support 20a and the sleeve 18 basically.
As mentioned above, the minimum angle-of-incidence position of the rotation swash plate 11 of the minimum discharge capacity of decision compressor, decided with engaging of sleeve 18 outer circumferential faces by the aperture surface 20b in the through hole 20 of tortuous long hole shape, this is very important for keeping minimum angle-of-incidence accurately.Promptly, the deciding factor relevant with the minimum angle-of-incidence precision has only two, one is the precision of the angle of the periphery planar section of the rotation swash plate 11 that efficiency flat is arranged, promptly engage with each piston 9 by guide plate 14,14 of rotation swash plate 11 and above-mentioned aperture surface 20b, and another is to be entrenched in this live axle outer circumferential face of the sleeve 18 on the live axle 6 and the size of the play amount between the sleeve inner peripheral surface.Not as existing compressor, the processing of a plurality of parts such as stopping wheel on rotor 10 and linkage K, the live axle 6, the assembling tolerance synthetically influential to the minimum angle-of-incidence precision.Processing, the assembling of compressor are oversimplified.
It should be noted that in the present embodiment, be clipped in sleeve 18 between through hole 20 and the live axle 6 of rotation swash plate 11, that prevent mutual abrasive action, combination can be brought into play important and effective function by the chimeric of the carriage 15 of the supporting arm 17 of the rotor 10 that forms linkage K, rotation swash plate 11, guide finger 16.
As shown in Figure 9, when the bulb 16a of guide finger 16 being embedded in the pilot hole 17a on the supporting arm 17 be formed on linkage K, make rotation swash plate 11 on live axle 6, cross zero degree, guide finger 16 is tilted near live axle 6 outer circumferential faces towards compressor front side and reverse on the contrary fascinating usually.Fig. 9 represents guide finger 16 is embedded pilot hole 17a state before, at this moment, sleeve 18 is extracted and is being kept towards rotor 10 directions from the through hole 20 of rotation swash plate 11, extract the suitable big play of volume that forms between through hole 20 behind the sleeve and the live axle 6 with sleeve 18, this big play, the particularly play of aperture surface 20b part, when the embedding of guide finger 16, allow above-mentioned reverse the fascinating of rotation swash plate 11, above-mentioned embedding is more prone to.
In the present embodiment, the embedding part of linkage K is made of the direct chimeric of bulb 16a of pilot hole 17a and guide finger 16.But also can adopt other structure, for example, can press from both sides the combined structure of establishing bearing shell parts or axle boots parts etc. by between.As long as can guide the guide finger sporter neatly with good accuracy all can.The inclination angle that the motion of this guide finger is based on the rotation swash plate 11 that the rotation swash plate bearing device that comprises sleeve 18 supporting changes.
In addition, in the present embodiment, the mating face 11c of rotation swash plate 11 contacts with face with the ear end face 10a of rotor 10 and engages, the inclination maximum of restriction rotation swash plate 11.But be not limited thereto, also can cancel the yielding angle θ of aperture surface 20c of the through hole 20 of rotation swash plate 11, with the setting of minimum angle-of-incidence similarly, this aperture surface 20c is engaged with sleeve 18, set the inclination maximum that rotates swash plate 11 with this.
From as can be known above-mentioned, the rotation swash plate bearing device of the capacity variable type rotary slope plate type compressor of present embodiment, with previous embodiment similarly, can guarantee to rotate the change action of inclination angle flexibly of swash plate, and, can effectively prevent to rotate the wearing and tearing of each parts such as swash plate, sleeve, live axle, also have following attendant advantages simultaneously.
Promptly, because the minimum angle-of-incidence of rotation swash plate is the restriction that engages by aperture surface with the sleeve of the tortuous slotted hole that constitutes through hole, so it is few to influence the minimum angle-of-incidence factors of accuracy, can guarantee the minimum angle-of-incidence set, thereby the minimum that can guarantee compressor is accurately discharged capacity.
In addition, by from the through hole of rotation swash plate, extracting sleeve, can guarantee between through hole and live axle, to produce big gap, at the rotation swash plate in the crank chamber in the assembling process, this gap allows that linkage reverses to fascinating in conjunction with required rotation swash plate, can realize by through hole set the minimum angle-of-incidence of rotation swash plate and in compressor assembling operation the reverse of desired rotation swash plate fascinate.Two embodiments of the present invention more than have been described, still, related domain professional workforce can do various changes in the scope of claim record.
6 driving shafts, 8 cylinder-bore, 9 pistons, 10 rotors, 11 swash plate 11a docking section 11b spot-facing face 11c front end faces, 12 helical springs, 13 snap rings, 14 guide plates, 15 carriages, 16 guide finger 16a bulbs, reference marker 1 cylinder block 2 procapsids 3 back casings 5 crank chambeies, 17 abutment wall 17a pilot holes, 18 sleeve 18a flanges, 20 through hole 20a support 20b aperture surface 20c aperture surfaces
Claims (10)
1. capacity variable type rotary slope plate type compressor, it has cylinder block, front case, live axle, rear case, rotor, rotation swash plate, piston;
Cylinder block has several cylinder-bore that are arranged side by side, to constitute the external frame of compressor;
The inside of front case forms the front end of crank chamber and closed cylinder body;
Live axle is by the supporting of cylinder block and front case, and has axis and can be around this axis rotation;
Rear case has suction chamber and discharges the rear end of chamber and closed cylinder body;
Rotor is fixed on the live axle in the crank chamber;
The rotation swash plate be installed in live axle around, supporting to variable pitch, and be connected with rotor by linkage; Piston is connected straight line motion in cylinder-bore with the rotation swash plate;
It is characterized in that,
The rotation swash plate has a through hole;
Folder is being established housing part between through hole and live axle, and the inclination angle that this housing part is accompanyed or follow the rotation swash plate changes, and can move along axial direction on live axle;
The rotation swash plate has support, this support clips the axis of the live axle in the inner peripheral surface part of determining through hole, engage partly with housing part at the linkage opposite side, the rotation swash plate of by this support part supports is allowed at The whole control scope leaning angle to change.
2. capacity variable type rotary slope plate type compressor as claimed in claim 1, it is characterized in that, the through hole of rotation swash plate has two bore portions that are interconnected of being determined by two different inner diameters faces, these two bore portions allow the rotation swash plate with respect to support in the inclination angle of axle direction both sides transition activities.
3. capacity variable type rotary slope plate type compressor as claimed in claim 2, it is characterized in that, the rotation swash plate has the spot-facing part, this spot-facing part is near a bore portion in above-mentioned two bore portions that form through hole, this spot-facing part engages with stop component on being installed in live axle, sets the minimum angle-of-incidence position that rotates swash plate.
4. capacity variable type rotary slope plate type compressor as claimed in claim 2 is characterized in that, the bore portion of two connections that through hole possessed of rotation swash plate is mutual complications.
5. capacity variable type rotary slope plate type compressor as claimed in claim 1 is characterized in that, above-mentioned housing part is accompanyed or follow the gamut that rotation swash plate inclination angle changes, and moves along axis on live axle.
6. as each described capacity variable type rotary slope plate type compressor in the claim 1 to 5, it is characterized in that housing part is engaged with the rotation swash plate by the pushing of the elastic force of spring.
7. as each described capacity variable type rotary slope plate type compressor in the claim 1 to 6, it is characterized in that, the rotation swash plate has and is formed on the end-to-end joint part of the flange engages on the housing part at the end near through hole, this end-to-end joint part be designed to rotate the swash plate inclination angle change have nothing to do and support between the constant substantially shape of axial distance.
8. capacity variable type rotary slope plate type compressor as claimed in claim 2 is characterized in that, aperture surface in two different inner diameters faces of two bore portions of above-mentioned through hole and socket joint are set the minimum angle-of-incidence of rotation swash plate.
9. capacity variable type rotary slope plate type compressor as claimed in claim 8, it is characterized in that, two different inner diameters faces of above-mentioned two bore portions of the through hole of rotation swash plate, by housing part is transferred to from through hole and live axle between form big play, allow with this to be located at rotor and the assembling of rotating the linkage between the swash plate.
10. capacity variable type rotary slope plate type compressor as claimed in claim 1 is characterized in that, housing part be installed in its with rotor between spring pushing and engage with the rotation swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97190322A CN1071844C (en) | 1997-01-24 | 1997-01-24 | Positive-displacement rotary tilted plate type compressor with improved rotary tilted plate supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97190322A CN1071844C (en) | 1997-01-24 | 1997-01-24 | Positive-displacement rotary tilted plate type compressor with improved rotary tilted plate supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1188527A CN1188527A (en) | 1998-07-22 |
| CN1071844C true CN1071844C (en) | 2001-09-26 |
Family
ID=5178682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97190322A Expired - Fee Related CN1071844C (en) | 1997-01-24 | 1997-01-24 | Positive-displacement rotary tilted plate type compressor with improved rotary tilted plate supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071844C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6127994B2 (en) * | 2014-01-30 | 2017-05-17 | 株式会社豊田自動織機 | Variable capacity swash plate compressor |
| CN107752715B (en) * | 2016-08-19 | 2020-09-18 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooking device |
| KR101880076B1 (en) * | 2017-12-08 | 2018-07-19 | 이래오토모티브시스템 주식회사 | Variable swash plate type compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312674B2 (en) * | 1986-07-08 | 1991-02-20 | Sanden Corp | |
| JPH08158026A (en) * | 1994-12-02 | 1996-06-18 | Daihatsu Motor Co Ltd | Production of cylinder head made of aluminum |
-
1997
- 1997-01-24 CN CN97190322A patent/CN1071844C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312674B2 (en) * | 1986-07-08 | 1991-02-20 | Sanden Corp | |
| JPH08158026A (en) * | 1994-12-02 | 1996-06-18 | Daihatsu Motor Co Ltd | Production of cylinder head made of aluminum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1188527A (en) | 1998-07-22 |
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