• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention can be used in automobiles - refrigerators, in air conditioning installations of buses or cars, the compressor of which is driven by the internal combustion engine of the automobile. The purpose of the invention is to maintain the cooling capacity at a constant level with any fluctuations in the number of revolutions of the drive engine. The actuator is made in the form of a servo drive 9 connected via a hydraulic line 10 to an evaporator 2 and directly acting on the movement of the disks under the influence of the pressure of the refrigerant in proportion to the change in the latter. The V-belt drive 5 may contain two V-belts 11 and 12. One of the belts may be associated with a driving motor and a disk pair 6 with movable discs. A wedge-shaped chute for a second V-belt connected to the compressor by means of an additional conical disk pair can be made on one of the disks. Conical disc pairs can be connected in parallel. The servo drive may comprise a housing in contact with one of the conical disks and separated by a membrane rigidly connected to the other disk of the pair. The overmembrane cavity is connected to the hydroline linking the servo drive to the evaporator. 6 hp ff, 6 ill.
    公开号:SU1510724A3
    申请号:SU864027154
    申请日:1986-03-14
    公开日:1989-09-23
    发明作者:Ламм Гельмут；Гипфль Вольфганг；Пешль Гюнтер
    申请人:Сютрак Транспорткэльте Гмбх (Фирма)；
    IPC主号:
    专利说明:

    / V W r / yes / BQQrImin.
    a. /
     cm
     5 15
    ZfOOr / min
    3151
    The invention relates to refrigeration engineering, in particular, to devices for influencing the rotational speed of a compressor of a refrigeration unit, and can be used in refrigeration units that are used in automobiles, for example, refrigerated automobiles or in bus air conditioning installations. or passenger cars whose compressor is driven by a car's internal combustion engine.
    The aim of the invention is to maintain the cooling capacity at a constant level with any fluctuations in the number of revolutions of the drive engine.
    Figure 1 shows a diagram of a refrigeration unit with a control unit for rotating the compressor of a refrigeration unit to control its cooling capacity; in fig. 2 shows a tapered disk pair of one of the embodiments of a compressor speed control unit of a refrigeration unit with a slave servo drive for infinitely variable transmission ratio; on fig.Z - section aa in figure 2; in fig. 4 is an embodiment of the device, with: - a device for which a conical disk pair with a slave servo drive is located directly on the drive shaft of the compressor and is directly coupled to the V-belt pulley of the drive engine; Fig. 5 shows an embodiment of a double tapered disc pair; Fig. 6 is another variant of the disk pair and servo drive. A speed control device for rotating a compressor of a refrigeration unit for controlling its cooling capacity, including condenser 1, evaporator 2 and compresso 3, connected to drive engine 4 by means of V-belt transmission 5 with infinitely variable transmission ratio, contains one conical pair 6 with movable discs 7 and 8, which are installed with the possibility of changing the distance between them by means of an actuator, made in the form of a servo-drive 9, connected by means of hydraulics A fuzz line 10 with an evaporator 2. Klinoramennaya gear 5 has two clino1x belts 11 and 12, one of which 11 is connected to compressor 3 and disk 6,
    The conical disc pair 6 (FIG. 2 consists of two conical discs 7 and 8. The conical disc 7 is made outside due to the presence of a wedge-shaped groove 13 in the form of a belt pulley. The groove 13 includes a V-belt 12 through which the belt pulley 14 drives the conical disk 7 Between the conical discs 7 and 8 of the clamping V-belt 11, through which the belt pulley 15 of the compressor 3 is set in motion, the pulley 15 can be made as an additional conical disk pair,
    Both conical discs 7 and 8 (Figures 2 and 3) are placed on a common hollow shaft 16, respectively, with a tight fit. The hollow shaft 16 in its middle part, by means of the needle roller bearing 17, is rotatably disposed in the support hole; console 18, having the shape of a connecting rod. At the other end of the console 18 there is a hole 19 for accommodating the bolt that secures it to the engine 4. In the left (Fig. 2) end of post-shaft 16 there is a thrust ball bearing 20, the inner ring of which rests on the conical disk 8 and the outer ring of which rests on the stop ring 21, which is firmly connected to one of the ends of the pusher 22 passing through the hollow shaft 16. The outer diameter of the pusher 22 is smaller than the inner diameter of the hollow shaft 16. At the left end of the pusher there is a thread with which it is screwed In the corresponding threaded hole of the stop ring 21. In the intermediate space between the pusher 22 and the hollow shaft 16 is placed a screw spring 23 compression. With its right end, the pusher is firmly connected to the membrane plate 24. The screw compression spring 23 rests on its end on the downward facing flange 25 of the hollow shaft 16 and on the right end rests on the thrust needle roller bearing 26, which on the other hand rests on the membrane plate 24.
    The membrane plate 24 is clamped along the entire perimeter between the halves 27 and 28 of the housing 29 of the membrane box. Semi-body 27 has a hole 30 located at the center, through which the compression spring 23 and the pusher 31 pass, and around its perimeter the body 29 rests on the outer ring of the thrust ball bearing 32, the inner ring of which rests on the conical disk 7, Both semi-bodies 27 and 28 of the body 29 around the perimeter, 11 are tightly screwed to each other. Half of the internal space of the housing between the semi-hull 27 and the membrane plate 24 is connected through an opening 30 to the external environment.
    Dils would be in its middle position). Energy is transferred from the engine 4 through the V-belt 12 to the tapered disk 7 and through the V-belt 11 clamped between the conical disks 7 and 8 onto the belt pulley 15 of the compressor 3. The V-belt 11 presses outside on the conical disks 7 and 8 and thereby gives them both movement, and they are wedged on the hollow shaft 16 and give it movement. In this case, the hollow shaft 16 can rotate, since, on the one hand, it is attached
    thirty
    while the other half of the inner J5 goes to the thrust ball bearing 21, the housing space is tightly closed, but the pressure line 10 is connected to the inner space of the evaporator 2, so that the membrane plate 24 on this side is constantly loaded with pressure in the evaporator 2. By more or by lowering the pusher 22 into the threaded hole of the retaining ring 21, you can adjust the preload force of the screw 25 compression spring 23 and thereby the preload force of the membrane plate 24. The membrane plate can It can be made of spring sheet steel or of an elastic material resistant to the coolant. The sides of the conical disks 7 and 8 facing each other along the axis have conical side surfaces made in a mirror image with respect to each other, between which the V-belt 11 driving the compressor 3 moves.
    On the side of the conical disk 8 (Fig. 3), facing in the direction opposite to the conical disk 7, there are four radial needle-like ribs 33, between which in the recess there is a conical disk 8. The ribs 33 are of such a shape that they serve as air inlet - blades for the purpose of supplying air with which the conical disk 8 is cooled. The conical disk 7 is provided with corresponding ribs (not shown).
    The device works as follows.
    In the position (figure 2), in which
    V-belt 11 is in its upper position between conical disks 7 and 8, compressor 3 rotates at maximum speed (at its nominal speed of rotation j of 2400 o6 / niH, V-belt 11 is 35
    40
    45
    50
    on the other hand, via a compression spring 23, it is rotatably supported on the supporting carbon roller bearing 26 on the membrane plate 24. The diaphragm housing 29 has a fixed connection not shown to the engine 4, so that it cannot rotate. A directional (Fig. 2) right to the preload force of the compression spring coil 23 counteracts the effect on the other side of the membrane plate 24 pressure in the evaporator 2, so that the V-belt 11 at its nominal rotational speed of the compressor 3 retains its not shown middle position until , while the rotation speed of the engine 4 does not change, the pressure or temperature in the evaporator. If the rotation speed of the engine 4 increases, the rotational speed of the compressor 3 temporarily increases beyond the nominal, so that It extracts more refrigerant gas from the evaporator. As a consequence, the pressure in the evaporator decreases, so that the membrane plate 24 can move slightly to the right. As a result, the tapered discs 7 and 8 are shifted and the V-belt 11 describes a large circumference. Thus, the rotational speed of the compressor decreases, the pressure in the evaporator rises again, the membrane plate 24 (Fig. 2) is pressed back to the left, the conical disk 8 moves slightly away from the conical disk 7, and the wedge 11 again occupies its middle position.
    Accordingly, the rotational speed of the compressor increases or decreases if the pressure in the evaporator is changed. :
    is caused by a change in the speed of rotation of the drive motor or
    0
    5 gaet to thrust ball bearing 21, 0 5

    five
    0
    five
    0
    on the other hand, via a compression spring 23, it is rotatably supported on the supporting carbon roller bearing 26 on the membrane plate 24. The diaphragm housing 29 has a fixed connection not shown to the engine 4, so that it cannot rotate. A directional (Fig. 2) right to the preload force of the compression spring coil 23 counteracts the effect on the other side of the membrane plate 24 pressure in the evaporator 2, so that the V-belt 11 at its nominal rotational speed of the compressor 3 retains its not shown middle position until until the rotation speed of the engine 4, the pressure or the temperature in the evaporator changes. If the rotational speed of the engine 4 increases, the rotational speed of the compressor 3 is temporarily above the nominal, so that the latter takes more of the refrigerant gas out of the evaporator. As a consequence, the pressure in the evaporator decreases, so that the membrane plate 24 can move slightly to the right. As a result, the tapered discs 7 and 8 are shifted and the V-belt 11 describes a large circumference. Thus, the rotational speed of the compressor decreases, the pressure in the evaporator rises again, the membrane plate 24 (Fig. 2) is pressed back to the left, the conical disk 8 moves slightly away from the conical disk 7, and the wedge 11 again occupies its middle position.
    Accordingly, the rotational speed of the compressor increases or decreases if the pressure in the evaporator is changed. :.
    is caused by a change in the speed of rotation of the drive motor or
    ten
    15
    20
    temperature environment; it evaporated environment.
    The V-belt pulley 15 of the compressor 3 is made in the form of a conical disk pair, the conical disks of which, due to damming (not shown), are mutually clamped. If the V-belt 11, due to the re-soldering of the conical disks 7 and 8, moves along a greater circle, the springs of the conical disk pair 15 are weakened accordingly, so that the V-belt 11 moves along a slightly smaller circle. The preloading of the springs of the additional conical disk pair 15 and the preloading of the helical spring 23 of compression in the conical disk pair 6 is chosen so that when the servo drive 9 triggers, the required change in the rotation speed of the compressor 3 is always ensured.
    The V-belt pulley 15 of the compressor 10 in FIG. 4 is replaced by a conical disk pair 6 with a slave servo drive 9. In this embodiment, the servo drive 9 has another pressure line 34, with which it is connected to the condenser 1. The servo drive 9 (FIG. 4) has two cameras connected to lines 34 or 10.
    Figure 5 shows a configuration in which several conical disk pairs 35 and 36 are connected in parallel, and a common conical disk 39 is placed just outside the external conical disks 37 and 38. The use of several conical disk pairs 35 and 36, etc. It is preferred for the transmission of more significant torques.
    thirty
    35
    40
    In the exemplary embodiment shown in FIG. 5, another embodiment of the servo 9 is also shown, which serves not to control the speed of rotation of the compressor, but to stop the compressor. This applies to the case in which the rotational speed of the compressor is not regulated, and through a servo drive, the compressor is connected to a power circuit with a V-belt 12 or this drive connection is stopped by a servo drive 9, which has a silicone-filled chamber 40 in which a two-way coil 41 is located, which is axially externally rests on the corresponding membrane plate 24 plate 42, and axially
    0
    five
    0
    25
    thirty
    35
    40
    45
    55
    inside to a bell-shaped movable wall 43, which moves along
    relative to the plate 42 and the guide ring 44 rigidly connected to it. G of the other side of the wall 43 is adjacent to the thrust ball bearing 46, which (screw 47, the connecting rod neck 48 of the crankshaft of the compressor 3) has a fixed connection with a conical disk 38. Instead of a helical spring, 23 compression (Fig. 5) a series of compression coil springs 49 are provided, which are housed in the axial holes of the middle conical disk 39 and their ends rest on the inner surfaces of the conical disks 37 and 38. Between the conical disks 37 to 39 under both are not shown wedge belts are provided with ball bearing-mounted mounting thrust rings 50, which are blindly seated on the middle conical disk 39 and on the freely rotating outer rings of which V-belts can be supported if the conical disks 37 and 38 are in their outer conical disk 39 position. The function of the mounting thrust rings 50 (FIG. 2) is performed by the upper circumferential surface of the arm 18 (which is preferably polished).
    The coil 41 (figure 5) line 34 (figure 4) is connected to the capacitor 1 (or a source of compressed air} 7x). If the rotational speed of the compressor 3 does not need to be regulated, and therefore the servo drive form according to FIG. 5 is applied, the servo drive 9, based on the internal pressure in the coil 41, compresses the conical disks 35 and 36 despite the force of the coil springs 49. If the loading stops ( for example, due to a decrease in pressure in the condenser 1 or disconnection of a source of compressed air), then the springs 49 expand the conical disks 37 and 38, as a result of
    I
    which the compressor stops.
    The conical disks 37-39 (FIG. 5) are connected to their shafts in accordance with the geometrical closure of the polygonal or slit profile, namely the inner conical disk 39 is connected to its shaft in the form of flanges 35 and 36 of the outer conical disks 37, 38 and the last through these flanges is connected to the sleeve 51, which is connected in the present manner (taper fit and wedge connection) with the crank pin 48 of the crankshaft of the compressor 3.
    Figure 6 shows the modified form of the conical disk pair 6 compared to the image in Figure 2. In this form of execution, the console (figure 2) is replaced by two cantilevers 52 and 53, between which the conical disk 6 is rotatably mounted The double conical disk 54 corresponds to the conical disk shown in FIG. 2 by a wedge-shaped groove 13, Ball bearing 55, seated on the collar of the conical disk 56J performs the same function as the mounting thrust rings 50 (FIGS. 5). Instead of a force closure connection between a conical disk pair 6 and a core shaft 16 (FIG. 2), a geometry closure connection is provided with a spline profile on the outside of the core shaft 57 (FIG. 6). The compression spring screw 58 rests between the left console 52 and the base of the hole in the hollow shaft 57. The hollow shaft 57 is rigidly connected to the right conical disk 59. The hollow shaft 57 is miscible; axially in the left conical disk 56. The conical disk 56 is mounted on the arm 52 rotatably and cannot move in the axial direction.
    In Fig. 6, another embodiment of a servo-actuator 9 is shown on the right, in which, instead of the membrane box (Fig. 2), there is a membrane cylinder having a case 60 in which a roller membrane 61 is fixed, covering the piston 62, being moved in the case 60. At the left end piston 62 is reinforced with a conical disk 59 with the possibility of relative rotation. The conical disk 59 and the piston 62 are capable of non-relative movement in the axial direction, i.e. the conical disk 59 follows any movement of the piston 62 in the axial direction. The housing 60 is connected by a line 63, the corresponding line 10, with the evaporator 2 (figure 1).
    The piston 62 on the left side is loaded with pressure along another line 64 connected to housing 60. Line 64 leads to or to capacitor 1
    (respectively line 34 in figure 4), or to a source of compressed air. Both lines 64 and 63 can be connected between, an AND / OR logic valve, preferably an electromagnetic check valve 65. If the compressor needs to be turned off, the left side of the piston 62 through line 64 is pressurized.
    0 In this case, the ball is symbolically
    depicted in the solenoid check valve 65, is in its right position and blocks the connection to the line. 63. If the cold installation is started, first the compressor remains off due to line 64 pressure. Then the ball in the electromagnetic check valve 65 falls into the middle position. Since
    0, the active surface of the piston 62 on the right side (roller membrane 61) is larger, the piston moves to the left. V-belt drive is therefore included (conical discs
    5 56 and 59 converge) and the ball in the electromagnetic non-return valve 65 moves to the left towards the left hole. The further adjustment process proceeds in the same way as in the implementation form according to
    0 figure 2.
    权利要求:
    Claims (7)
    [1]
    1. Speed control device.
    5 of rotation of a compressor of a refrigeration unit for controlling its cooling capacity, having a condenser, an evaporator and a compressor associated with a drive motor, have a variable rotational speed by means of a V-belt transmission with infinitely variable transmission ratio, containing at least one conical pair with
    5 movable discs installed with the possibility of changing the distance between them using an actuator, while respecting the relationship between the refrigerant pressure on the side
    compressor suction with volumetric
    the coolant flow rate in the latter, characterized in that, in order to maintain the cooling capacity at a constant level with any fluctuations in the number of revolutions of the drive engine, the actuator is made in the form of a servo drive connected with a hydraulic line to the evaporator and directly acting on The transfer of disks under the effect of the refrigerant pressure is proportional to the change in the latter.
    [2]
    2. The device according to claim 1, about tl and the fact that the wedge belt for transmission contains two V-belts, one of which is associated with the drive motor and the disk pair with moving disks, on one of which disks a wedge-shaped groove is made another V-belt connected to the compressor via an additional conical disk pair.
    [3]
    3. Device POP.1, characterized by the fact that the conical disk pairs are connected in parallel, with a common conical disk located between the two disks of adjacent pairs
    with two conical surfaces.
    [4]
    4. The device according to claim 1, 1, which is made up of the fact that the servo drive is of membrane type and contains a housing in contact with one of the conical disks of the disk pair and separated by a membrane rigidly connected to another conical disk.
    and
    Z7
    20
    pairs of submembrane and supramembrane cavities, the last of which is connected to the hydraulic line connecting the servo drive to the evaporator
    [5]
    5. Pop 1 device, distinguished by the fact that the servo drive is piston type and contains a cylinder in contact with one of the conical disks of a disk pair and separated by a piston connected to move axially together with another disk of this pair, having relative to the last possibility of rotation, on a sub-piston
    and the piston cavities, the latter of which is connected to the hydraulic line connecting the servo drive to the evaporator.
    [6]
    6. POP.1 device, characterized in that the sub-cavity is connected by means of its hydraulic line to a condenser or an unauthorized pressure source.
    [7]
    7. Device POP.1, characterized in that both hydraulic lines are interconnected by an AND / OR valve.
    Aa
    33
    21
    13
    Fi.Z
    . 50 g I min
    33 JS
    J8
    50
    d
    five
    FI.6
    Editor G. Volkova
    Compiled by N. Alekseeva
    Tehred L. Oliynyk Proofreader N. Borisova
    Order 5832/58
    Circulation 462
    VNIIPI of the State Committee for Inventions and Discoveries at the State Research and Technology Center for the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab.
    Production and Publishing Combine Patent, Uzhgorod, Gagarin Street, 101
    Subscription
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19843426190|DE3426190A1|1984-07-16|1984-07-16|ARRANGEMENT FOR INFLUENCING THE SPEED OF A COMPRESSOR OF A REFRIGERATION SYSTEM|
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