DE102011077669A1 - Valve, in particular digital valve, and pump, in particular water pump - Google Patents

Abstract

The invention relates to a valve (1), in particular a digital valve (1), for influencing a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, with an actuator mounted in a valve body (20) so as to be translationally movable (10) for opening / closing a fluid passage (22) through the valve (1), wherein the valve (1) has a transmission device (40) which a translatory opening / closing movement of the actuator (10) a rotary component for opening / Closing the fluid passage (22) impresses. The invention also relates to a digital valve (1) for switching a fluid volume flow on / off in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, with an actuator (10) mounted in a valve body (20) such that it can rotate Opening / closing of a fluid passage (22) through the valve (1), the valve (1) having a fluid channel (12) such that the actuator (10), upon continued rotations in one direction of rotation or in opposite directions of rotation, the fluid passage (22 ) alternately opens and closes or closes and opens. The invention also relates to a pump, in particular a water pump, the pump or the water pump having a valve (1) according to the invention, in particular a digital valve (1) according to the invention.

Description

The invention relates to a valve, in particular a digital valve, for influencing a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle. Furthermore, the invention relates to a digital valve for switching on / off a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle. Furthermore, the invention relates to a pump, in particular a water pump.

State of the art

In a cooling circuit with a liquid cooling medium, for. As a water-glycol mixture with a variable mixing ratio for motor vehicles, various valves or actuators for controlling, regulating and interconnecting the individual circuits of the cooling circuit are used. Both digital valves that are to be controlled or regulated and proportional valves that are to be continuously controlled or regulated are used, with passive and active actuators or thermostats or electrically excitable and mechanically actuable actuators of such valves being distinguished. In general, reversible for the widely used digital valves, d. H. used reciprocating actuators such. B. Solenoid valves with conical seat geometry. Such actuators are electrically, electromotively, hydraulically or mechanically driven.

task

It is an object of the invention to provide an improved valve, in particular an improved digital valve, for influencing or for switching on / off a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle. Here, the valve according to the invention disadvantages of digital switching solenoid valves - such. As pressure surges or pressure pulsations, especially during a closing operation of the valve, a load-free positioning of an actuator of the valve, a lack of control characteristics, etc. - avoid. In this case, it should be possible in particular to give a digital control valve a certain control or regulating characteristic. Furthermore, the valve according to the invention should be simple and small and inexpensive to manufacture.

Disclosure of the invention

The object of the invention is by means of a valve, in particular a digital valve, for influencing a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, according to claim 1; by means of a digital valve for switching on / off a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, according to claim 2; and a pump, in particular a water pump, with a valve according to the invention, in particular a digital valve according to the invention, according to claim 10. Advantageous developments, additional features and / or advantages of the invention will become apparent from the dependent claims and the description below.

The present invention discloses, in contrast to the prior art, a continuously switching and preferably unidirectional alternative working concept for a valve, in particular a digital valve, which combines advantages of a solenoid valve with the advantages of a preferably controlled rotary cylinder valve and thus both in economic than also offers a technically advantageous solution approach. The invention is particularly applicable to digital and electrically excited actuators or digital and electrically excited valves.

In a first variant of the invention, the valve or digital valve has an actuator which can be moved translationally in a valve body for opening / closing a fluid passage through the valve. Furthermore, the valve or digital valve comprises a translation device which imparts a rotary component for opening / closing the fluid passage to a translatory opening / closing movement of the actuator. In a second variant, the valve or digital valve according to the invention has an actuator movably mounted rotatably in a valve body for opening / closing a fluid passage through the valve. Furthermore, this valve or digital valve comprises a fluid channel in such a way that the actuator alternately opens and closes the fluid passage in continuous rotation in one direction of rotation or opposite directions of rotation and vice versa. Here, the respective actuator of the valve or digital valve is at least partially rotationally symmetrical. This relates in particular to at least one sealing region of the actuator, which is preferably cylindrical.

Such an inventive rotary cylinder lift valve (essentially the first variant of the invention) or rotary cylinder valve (essentially second variant of the invention) offers a possibility of realizing digital controls in a compact installation space for a large number of applications in cooling circuits or coolant circuits. It is of course possible to transfer the invention to other fluid applications. By a inventive combination of positive characteristics of a preferred digital solenoid valve technology on the one hand with a rotary cylinder valve technology on the other hand, creates a cost-effective, space-optimized and compared to the prior art superior technical solution for valves. In particular, the invention is applicable to all valves in temperature controlled circuits with liquid media and a digital control strategy.

Here are disadvantages of known solenoid valves - such. B. generation of pressure surges or pressure pulsations, especially during a closing operation of the valve or digital valve, a load-free positioning of the actuator of the valve or digital valve, a lack of control characteristics, etc. - avoided by a rotary cylinder valve principle and according to the invention with the advantages connected to the "simple" solenoid valve technology. In addition, a variable and independent control characteristic for the opening and closing of the valve or digital valve can be realized via a slide track (see below). Furthermore, a power consumption of the valve or digital valve according to the invention with comparable valves from the prior art, such. As a digital solenoid valve, low, since the valve must be energized only in switching or actuating case, in the time-long phases in between the valve of the invention must not be energized.

In preferred embodiments of the invention, the translation device of the valve or of the digital valve has complementary translation devices which, in particular due to their geometry, the translational or rotational opening / closing movement of the actuator imprints or impresses the rotary or a translatory component. Furthermore, in preferred embodiments of the invention, the valve or the digital valve has a coil device with at least two mutually complementary coils and the actuator instead of a solenoid, a rotary magnet. In this case, the coil device can be energized electrically in such a way that the actuator can be moved to continued rotation in one direction of rotation or in opposite directions of rotation due to its rotary magnet.

The complementary and inventive translation devices of the translation device may for example be a slide track and a crank pin or sliding block, and / or they may be mutually complementary mold sections on the actuator and the valve body or other device of the valve. Furthermore, the translation device may be a guide arrangement, which guides the actuator in the valve body in rotational and / or translational movement direction. Here, the valve or the digital valve may be formed such that the actuator has the slide pin or sliding block, and the valve body has the corresponding guide track. Of course, this is also reversible, in which case the valve body has the slide pin or sliding block, and the actuator has the corresponding slide track.

In embodiments of the invention, the slide track may have a plurality, in particular two, two times two or four substantially identical sections, which are preferably arranged regularly on the circumference in question in the valve body or on the outside of the actuator. Here, a portion of the slide track, which causes an opening of the actuator, have a different configuration, as a portion of the slide track, which causes a closing of the actuator.

Brief description of the figures

The invention is explained in more detail below with reference to embodiments with reference to the accompanying drawings. In the schematic figures of the drawing show:

1 a two-dimensional, central sectional view of a first variant of a valve or digital valve according to the invention in a closed position, wherein reference numerals for a second variant according to the invention are shown in parentheses;

2 one to 1 however, analogous representation of the valve or digital valve in its open position, again the reference numerals for the second variant of the invention are shown in parentheses;

3 a first embodiment according to the invention shown in a plane unwound slide track of the first variant of the valve or digital valve; and

4 a second embodiment according to the invention shown in a plane unwound slide track of the first variant of the valve or digital valve.

Embodiments of the invention

In the following, two variants and a plurality of embodiments of the invention, in particular for a cooling water circuit of a motor vehicle with a combustion and / or electric motor are explained in more detail. However, the invention should not be limited to such an application, but should apply to all controls, Controls, interconnections, etc. of fluid flows to be applicable. Thus, the invention z. B. particularly applicable to fluid flows in a heating, cooling and / or refrigerant circuit with any refrigerant or refrigerant. Furthermore, it is possible according to the invention to combine the two variants, embodiments of the two variants and embodiments of the invention. Preferably, the invention is applicable to digitally operating valves for switching on / off a fluid volume flow, but can also be applied to other valves, such. B. proportional valves. The following statements relate initially to both variants of the invention.

The valve according to the invention 1 (please refer 1 and 2 ), which also works as a digital valve 1 or binary valve 1 may be referred to, comprises a valve body 20 with a passing fluid passage 22 and one in the valve body 20 rotatably mounted actuator 10 that has a passing fluid channel 12 having. Here is the fluid passage 22 of the valve body 20 and / or the fluid channel 12 of the actuator 10 preferably as a through-hole 12 . 22 educated. The valve body 20 is for example as a valve housing 20 and the actuator 12 also as a valve member 10 designatable. For opening / closing the fluid passage 22 becomes the actuator 10 rotated about its longitudinal axis L (see below), so that according to the invention by a rotary cylinder lifting valve 1 (Essentially the first variant of the invention) or rotary cylinder valve 1 (Essentially the second variant of the invention) can be spoken.

The actuator 10 is about the longitudinal axis L, which is preferably substantially perpendicular to a flow direction of a fluid through the valve 1 through, in particular both possible directions of rotation preferably rotatable by more than 360 ° in the valve body 20 stored so that upon complete rotation of the actuator 10 in the valve body 20 , the actuator 10 the fluid passage 22 of the valve body 20 blocked twice and released twice. According to the invention, it is preferred that the valve 1 or its actuator 10 is switched in 90 ° turns. This is under a rotation, a rotary motion, with a subsequent stop of the actuator 10 be understood, with a complete turning around the actuator 10 about its longitudinal axis L, the actuator 10 preferably four times while stopping the valve 1 opens twice and closes twice. Of course it is also possible to use the actuator 10 not always turn in one direction, but possibly alternately in both directions.

The fluid channel 12 of the actuator 10 can also have a plurality of inlet openings and / or outlet openings and / or fluid channels 12 own (not shown in the drawing). This can also affect the valve body 20 hold true. Furthermore, the actuator 10 at least partially rotationally symmetrical, wherein at least one sealing region of the actuator 10 is preferably cylindrical. Works the valve 1 as a digital valve 1 , then opens or closes the actuator 10 the fluid passage 22 after a rotation, so preferably a 90 ° rotation, of the actuator 10 essentially complete.

Preferably, the actuator 10 at least one centering, in particular in addition to a centering over a sealing surface of the actuator 10 , by means of centering devices 44 . 45 , in particular by means of a centering pin 44 and a centering recess 45 on which the actuator 10 on at least one, preferably both end faces of the actuator 10 centered. For this purpose, the valve body 20 at least one centering recess 45 and the actuator 10 at least one complementary centering pin 44 , and / or vice versa. In this case, such a centering a translation device 40 for the actuator 10 form, wherein at least one centering pin 44 and at least one centering recess 45 translation devices 44 . 45 the translation device 40 training (see below).

In the first variant of the invention, the actuator 10 preferably away from its fluid channel 12 , a lifting magnet 14 on, the case of electrical energization of a coil 30 So a valve drive 30 of the valve 1 the actuator 10 moves in translation, ie lifts. It is preferred that the valve 1 is constructed such that the coil 30 the solenoid 14 of the actuator 10 in all positions of the actuator 10 surrounds in the circumferential direction, wherein the actuator 10 contrary to its stroke direction, in particular by means of a spring 50 or a compression spring 50 , is mechanically biased. Furthermore, the valve has 1 opposite to a longitudinal end of the actuator 10 which is inside the coil 30 located, a mechanical damping 60 , The valve drive 30 and the actual actuator 10 are preferably fluid-mechanically separated from one another by means of a separating membrane.

In the second variant of the invention, the actuator 10 preferably away from its fluid channel 12 , a rotation magnet 16 on, the electrical energization of a coil device 30 (Valve drive 30 ) of the valve 1 the actuator 10 rotatory moves, that rotates about its longitudinal axis L. It is also preferred that the valve 1 is constructed such that the coil device 30 the rotary magnet 16 of the actuator 10 in all positions of the actuator 10 surrounds in the circumferential direction, wherein the actuator 10 preferably is not mechanically biased. The coil device 30 has at least two coils 32 . 33 on, which are preferably offset by 90 ° to each other, so that depending on an electrical current supply to a coil 32 . 33 , the rotary magnet 16 magnetically attracted and continues to turn 90 °.

Preferably takes place when moving the actuator 10 the first variant of the invention, a combined translational-rotational or axial-rotational movement of the actuator 10 instead, which is preferred by a translation device 40 of the valve 1 is realized. The translation device 40 gives the initial translational movement of the actuator 10 a rotatory component. This can also be used in the second embodiment of the invention, in which case from the rotational movement of the actuator 10 a translational movement results.

For this purpose, the translation device 40 prefers translation devices 44 . 45 on, on the actuator 10 and on the valve body 20 are provided complementary to each other. As a translation device 40 may be a link arrangement or a guide arrangement between the actuator 10 and the valve body 20 be provided or trained. Further, for the translation facility 40 z. B. complementary mold sections on the actuator 10 and on the valve body 20 or other device of the valve 1 applicable. In a preferred embodiment of the invention, a gate arrangement is used, wherein preferably the actuator 10 and preferably the valve body 20 mutually corresponding link mechanisms 42 . 43 , preferably a link pin 42 or Kulissenstein 42 or guide pin 42 and a slide track 43 or guide frame 43 exhibit.

Preferably located inside / on the valve body 20 the preferably completely circumferential slide track 43 , See the developments of such slide tracks in the 3 and 4 , Outside on the actuator 10 is the preferred radial wegstehende scenery pin 42 , However, this can also be formed vice versa. The 1 and 2 suggestively show the scenery pin 42 on the outer circumference of the actuator 10 ie that the sectional image of the 1 and 2 in this area a plan view of the scenery pin 42 shows and no sectional view. It is preferred that the slide pin 42 laterally apart from an opening cross-section of the fluid channel 12 of the actuator 10 is provided.

According to the invention, the mutually complementary translation devices 42 . 43 , in particular the slotted devices 42 . 43 , away from an opening cross-section of the actuator 10 and the valve body 20 intended. It is preferred that the slide track 43 or the scenery cone 42 integral with the respective part, that is, materially integral, is formed. As already mentioned above, these are preferably the actuator 10 or the valve body 20 , Furthermore, the slide track 43 or the scenery cone 42 as an insertion part of the valve body 20 or the actuator 10 be educated. It is preferred that the valve body 20 with the integral slide track 43 injection molded, or the slide track 43 is an insert for the valve body 20 ,

In the valve 1 is according to the invention, the sliding pins 42 in the slide track 43 preferably forcibly guided over an entire inner or outer circumference, whereby the actuator 10 opposite the valve body 10 performs a certain translational-rotational movement, at the latest, depending on the design of the slide track 43 , after a 360 ° rotation of the actuator 10 repeated. Preferably, the slide track 43 however, configured such that such movement occurs after rotation of the actuator 10 of 90 °, 180 ° or 270 °. That's how the slide track can do 43 a plurality, e.g. For example, two, three, two times two (see 4 ) or four (see 3 ) have substantially identical sections, which are preferably arranged regularly on the respective circumference, wherein sections for closing the valve 1 Other configurations may have, as sections for opening the valve 1 ,

The slide track 43 is in particular designed such that these and / or a first and / or a second mathematical derivative of a function of the preferably idealized slide track 43 , Preferably apart from rest positions of the actuator 10 in the valve 1 , is free from discontinuities. A curvature of the slide track 43 changes in transition areas between straight and arcuate areas in particular continuously, preferably linear. The slide track 43 is preferably formed in sections of straight sections and / or arc, in particular clothoids, cubic parabolas and / or sinusoids. Furthermore, at a beginning and / or ending opening / closing of the valve 1 the slide track 43 have a comparatively low slope, the slope of the slide track 43 directly before the beginning of opening and / or directly after the valve closes 1 can be essentially zero. Furthermore, the slope of the slide track 43 at the end and / or during the opening / closing of the valve 1 be comparatively high or maximum. - Below, four exemplary embodiments of the invention are briefly reproduced. The features explained here are in turn applicable to the other embodiments of the invention.

The first embodiment (see also the 1 and 2 ) teaches a rotary cylinder solenoid valve 1 with an actuator having a rotationally symmetrical cylinder 10 with a through hole 12 and a backdrop 42 , Furthermore, the valve has 1 a valve housing 20 with a four times 90 ° on the circumference arranged slide track 43 on, with the slide track 43 for opening / closing the valve 1 Serves, ie twice opening / closing per complete revolution of the actuator 10 with respect to the longitudinal axis L. The cylinder of the actuator 10 is directly with the solenoid 14 connected, wherein the actuator 10 frontally via centering pins 44 is guided. The adjustment of the actuator 10 necessary coil 30 encloses the solenoid 14 and is statically decoupled from a medium or fluid. During activation of the coil 30 becomes the lifting magnet 14 and thus the (rotary) cylinder (actuator 10 ) through the backdrop 42 and the slide track 43 adjusted in a combined translatory-rotary movement. After a deactivation of the coil 30 and until a next control command remains the valve 1 electrically energized open or closed.

The second embodiment (not shown in the drawing) teaches a double rotary cylinder solenoid valve 1 according to the first embodiment, wherein the valve 1 has two inputs and one output or one and two outputs for the medium or fluid. About a geometric design of the lifting cylinder of the actuator 10 and the slide track 43 the two channels are rigidly interconnected. It is also possible, the rotary cylinder solenoid valve 1 form as a double valve (also not shown in the drawing), wherein two superimposed valve body 20 are interconnected rigidly. It is possible that both valve body 20 open or close substantially simultaneously, ie, mainly parallel fluid passages 22 have. It is also possible the fluid passages 22 provided at an angle to each other, so that when switching the valve 1 for example, a fluid passage 22 opened and the other fluid passage 22 is closed.

The third embodiment (see also reference numerals in parentheses of 1 and 2 ) teaches a rotary cylinder (lift) valve 1 according to the first embodiment, wherein a rotational movement of the actuator 10 preferably purely rotational takes place and a shift gate arrangement in the valve 1 can be omitted. The rotary cylinder 10 (Actuator 10 ) has a magnetized "head", which has two offset by 90 ° coils 32 . 33 is adjustable. By an alternating actuation of the two coils 32 . 33 becomes the rotary cylinder 10 each in a defined and a coil 32 . 33 assigned position moves; z. B. first coil 32 electrically energized and second coil 33 not energized.

The fourth embodiment (not shown in the drawing) of the invention teaches a combination of a valve according to the invention 1 or a rotary cylinder solenoid valve according to the invention 1 or a rotary cylinder (lift) valve 1 with a pump, in particular a water pump as a complete control or regulating system for a variety of cooling or refrigerant cycle applications in the automotive and non-automotive sector, eg. B. the heating technology.

Claims (10)

Valve ( 1 ), in particular digital valve ( 1 ), for influencing a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, with a in a valve body ( 20 ) translationally movably mounted actuator ( 10 ) for opening / closing a fluid passage ( 22 ) through the valve ( 1 ), characterized in that the valve ( 1 ) a translation facility ( 40 ), which a translational opening / closing movement of the actuator ( 10 ) a rotary component for opening / closing the fluid passage ( 22 ) imprints. Digital valve ( 1 ) for switching on / off a fluid volume flow in a heating, cooling and / or refrigerant circuit, preferably a cooling water circuit of a motor vehicle, with a in a valve body ( 20 ) rotatably movably mounted actuator ( 10 ) for opening / closing a fluid passage ( 22 ) through the valve ( 1 ), characterized in that the valve ( 1 ) a fluid channel ( 12 ) such that the actuator ( 10 ) with continued rotations in one direction of rotation or opposite directions of rotation the fluid passage ( 22 ) alternately opens and closes or closes and opens. Valve ( 1 ) according to one of the preceding claims, characterized in that the translation device ( 40 ) of the valve ( 1 ) complementary translation devices ( 42 . 43 ; 44 . 45 ), which, in particular due to their geometry, the translational or the rotational opening / closing movement of the actuator ( 10 ) imprint the rotational or a translational component. Valve ( 1 ) according to one of the preceding claims, characterized in that the valve ( 1 ) a coil device ( 30 ) with at least two mutually complementary coils ( 32 . 33 ) and the actuator ( 10 ) a rotary magnet ( 16 ), wherein the coil device ( 30 ) so electrically can be energized, that the actuator ( 10 ) due to its rotary magnet ( 16 ) is movable to continued rotations in one or opposite directions of rotation. Valve ( 1 ) according to one of the preceding claims, characterized in that the mutually complementary translation devices ( 42 . 43 ; 44 . 45 ) of the translation facility ( 40 ): • a slide track ( 43 ) and a backdrop ( 42 ) or Kulissenstein ( 42 ), • mutually complementary mold sections on the actuator ( 10 ) and on the valve body ( 20 ) or another device of the valve ( 1 ), and / or • is a guide arrangement, which the actuator ( 10 ) in the valve body ( 20 ) leads in a rotational and / or translational direction of movement. Valve ( 1 ) according to one of the preceding claims, characterized in that the actuator ( 10 ) the scenery ( 42 ) or Kulissenstein ( 42 ) and the valve body ( 20 ) the corresponding slide track ( 43 ), or the valve body ( 20 ) the scenery ( 42 ) or Kulissenstein ( 42 ) and the actuator ( 10 ) the corresponding slide track ( 43 ) having. Valve ( 1 ) according to one of the preceding claims, characterized in that the slide track ( 43 ) such that: • these and / or a first and / or a second mathematical derivative of a function of the slide track ( 43 ), except for a fully open / closed position of the actuator ( 10 ) in the valve ( 1 ), free of points of discontinuity, • whose curvature changes, preferably in transition areas between straight and arcuate areas, linearly, • these sections of straight sections and / or arc, in particular clothoids, cubic parabolas and / or sinusoids, is formed, • these at a beginning and / or ending opening / closing of the valve ( 1 ) has a comparatively small slope, • the slope of this directly before the beginning or immediately after the opening / closing of the valve ( 1 ) is substantially zero, and / or • the slope of this at the end and / or during the opening / closing of the valve ( 1 ) is comparatively high or substantially maximum. Valve ( 1 ) according to one of the preceding claims, characterized in that the slide track ( 43 ) has a plurality, in particular two, two times two or four substantially identical sections, which are preferably arranged regularly on the respective circumference, wherein a portion of the slide track ( 43 ), which is an opening of the actuator ( 10 ), preferably has a different configuration than a section of the slide track ( 43 ), which is a closing of the actuator ( 10 ). Valve ( 1 ) according to one of the preceding claims, characterized in that the valve ( 1 ) is designed such that: • the actuator ( 10 ) is at least partially rotationally symmetrical, at least one sealing region of the actuator ( 10 ) is cylindrical, • the actuator ( 10 ) a lifting magnet ( 14 ), which in electrical energization of a coil ( 30 ) of the valve ( 1 ) the actuator ( 10 ) translationally moved, • the coil ( 30 ) the lifting magnet ( 14 ) of the actuator ( 10 ) in all positions of the actuator ( 10 ), • the actuator ( 10 ) is mechanically biased against its stroke direction, in particular by means of a spiral spring, the actuator ( 10 ) the fluid passage ( 22 ) only substantially completely opens / closes, • the actuator ( 10 ) centering by means of a centering pin ( 44 ), which the actuator ( 10 ) are centered on at least one, preferably both front sides, • two mutually complementary coils ( 32 . 33 ) of the coil device ( 30 ) are arranged offset by 90 ° to each other, • the fluid channel ( 12 ) of the actuator ( 10 ) has a plurality of inlet openings and / or a plurality of outlet openings, the actuator ( 10 ) a plurality of fluid channels ( 12 ), • the slide track ( 43 ) or the scenery ( 42 ) of the valve body ( 20 ) is formed integrally therewith, in particular by an injection molding process, 43 ) or the scenery ( 42 ) as an insert part of the valve body ( 20 ), and / or • the mutually complementary translation devices ( 42 . 43 ; 44 . 45 ) away from an opening cross-section of the actuator ( 10 ) and the valve body ( 20 ) are provided. Pump, in particular water pump, characterized in that the pump or the water pump is a valve ( 1 ), in particular a digital valve ( 1 ), which is designed according to one of the preceding claims.

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